diff options
author | nobody <> | 2002-05-28 18:43:09 +0000 |
---|---|---|
committer | nobody <> | 2002-05-28 18:43:09 +0000 |
commit | 0d49dda2de4c1fd23c87348f08a022bfd3ee3334 (patch) | |
tree | 592db3a187b7a55a25aa6d5e4df1f3326d298165 /bfd/elflink.h | |
parent | 0540f4547886519cdcf972d171961c0b6a33e02e (diff) | |
download | gdb-0d49dda2de4c1fd23c87348f08a022bfd3ee3334.zip gdb-0d49dda2de4c1fd23c87348f08a022bfd3ee3334.tar.gz gdb-0d49dda2de4c1fd23c87348f08a022bfd3ee3334.tar.bz2 |
This commit was manufactured by cvs2svn to create branch
'kseitz_interps-20020528-branch'.
Sprout from cagney_regbuf-20020515-branch 2002-05-15 21:19:22 UTC nobody 'This commit was manufactured by cvs2svn to create branch'
Cherrypick from master 2002-05-28 18:43:08 UTC Jason Thorpe <thorpej@netbsd.org> '* ppcnbsd-nat.c: Rewrite.':
gdb/ChangeLog
gdb/Makefile.in
gdb/mi/mi-main.c
Delete:
.cvsignore
COPYING
COPYING.LIB
COPYING.NEWLIB
ChangeLog
MAINTAINERS
Makefile.in
README
README-maintainer-mode
bfd/COPYING
bfd/ChangeLog
bfd/ChangeLog-0001
bfd/ChangeLog-9193
bfd/ChangeLog-9495
bfd/ChangeLog-9697
bfd/ChangeLog-9899
bfd/MAINTAINERS
bfd/Makefile.am
bfd/Makefile.in
bfd/PORTING
bfd/README
bfd/TODO
bfd/acinclude.m4
bfd/aclocal.m4
bfd/aix386-core.c
bfd/aix5ppc-core.c
bfd/aout-adobe.c
bfd/aout-arm.c
bfd/aout-cris.c
bfd/aout-encap.c
bfd/aout-ns32k.c
bfd/aout-sparcle.c
bfd/aout-target.h
bfd/aout-tic30.c
bfd/aout0.c
bfd/aout32.c
bfd/aout64.c
bfd/aoutf1.h
bfd/aoutx.h
bfd/archive.c
bfd/archive64.c
bfd/archures.c
bfd/armnetbsd.c
bfd/bfd-in.h
bfd/bfd-in2.h
bfd/bfd.c
bfd/binary.c
bfd/bout.c
bfd/cache.c
bfd/cf-i386lynx.c
bfd/cf-m68klynx.c
bfd/cf-sparclynx.c
bfd/cisco-core.c
bfd/coff-a29k.c
bfd/coff-alpha.c
bfd/coff-apollo.c
bfd/coff-arm.c
bfd/coff-aux.c
bfd/coff-go32.c
bfd/coff-h8300.c
bfd/coff-h8500.c
bfd/coff-i386.c
bfd/coff-i860.c
bfd/coff-i960.c
bfd/coff-ia64.c
bfd/coff-m68k.c
bfd/coff-m88k.c
bfd/coff-mcore.c
bfd/coff-mips.c
bfd/coff-or32.c
bfd/coff-pmac.c
bfd/coff-ppc.c
bfd/coff-rs6000.c
bfd/coff-sh.c
bfd/coff-sparc.c
bfd/coff-stgo32.c
bfd/coff-svm68k.c
bfd/coff-tic30.c
bfd/coff-tic54x.c
bfd/coff-tic80.c
bfd/coff-u68k.c
bfd/coff-w65.c
bfd/coff-we32k.c
bfd/coff-z8k.c
bfd/coff64-rs6000.c
bfd/coffcode.h
bfd/coffgen.c
bfd/cofflink.c
bfd/coffswap.h
bfd/config.bfd
bfd/config.in
bfd/configure
bfd/configure.com
bfd/configure.host
bfd/configure.in
bfd/corefile.c
bfd/cpu-a29k.c
bfd/cpu-alpha.c
bfd/cpu-arc.c
bfd/cpu-arm.c
bfd/cpu-avr.c
bfd/cpu-cris.c
bfd/cpu-d10v.c
bfd/cpu-d30v.c
bfd/cpu-fr30.c
bfd/cpu-h8300.c
bfd/cpu-h8500.c
bfd/cpu-hppa.c
bfd/cpu-i370.c
bfd/cpu-i386.c
bfd/cpu-i860.c
bfd/cpu-i960.c
bfd/cpu-ia64-opc.c
bfd/cpu-ia64.c
bfd/cpu-m10200.c
bfd/cpu-m10300.c
bfd/cpu-m32r.c
bfd/cpu-m68hc11.c
bfd/cpu-m68hc12.c
bfd/cpu-m68k.c
bfd/cpu-m88k.c
bfd/cpu-mcore.c
bfd/cpu-mips.c
bfd/cpu-mmix.c
bfd/cpu-ns32k.c
bfd/cpu-openrisc.c
bfd/cpu-or32.c
bfd/cpu-pdp11.c
bfd/cpu-pj.c
bfd/cpu-powerpc.c
bfd/cpu-rs6000.c
bfd/cpu-s390.c
bfd/cpu-sh.c
bfd/cpu-sparc.c
bfd/cpu-tic30.c
bfd/cpu-tic54x.c
bfd/cpu-tic80.c
bfd/cpu-v850.c
bfd/cpu-vax.c
bfd/cpu-w65.c
bfd/cpu-we32k.c
bfd/cpu-xstormy16.c
bfd/cpu-z8k.c
bfd/demo64.c
bfd/dep-in.sed
bfd/doc/ChangeLog
bfd/doc/Makefile.am
bfd/doc/Makefile.in
bfd/doc/bfd.texinfo
bfd/doc/bfdint.texi
bfd/doc/bfdsumm.texi
bfd/doc/chew.c
bfd/doc/doc.str
bfd/doc/header.sed
bfd/doc/makefile.vms
bfd/doc/proto.str
bfd/dwarf1.c
bfd/dwarf2.c
bfd/ecoff.c
bfd/ecofflink.c
bfd/ecoffswap.h
bfd/efi-app-ia32.c
bfd/efi-app-ia64.c
bfd/elf-bfd.h
bfd/elf-eh-frame.c
bfd/elf-hppa.h
bfd/elf-m10200.c
bfd/elf-m10300.c
bfd/elf-strtab.c
bfd/elf.c
bfd/elf32-arc.c
bfd/elf32-arm.h
bfd/elf32-avr.c
bfd/elf32-cris.c
bfd/elf32-d10v.c
bfd/elf32-d30v.c
bfd/elf32-fr30.c
bfd/elf32-gen.c
bfd/elf32-h8300.c
bfd/elf32-hppa.c
bfd/elf32-hppa.h
bfd/elf32-i370.c
bfd/elf32-i386.c
bfd/elf32-i860.c
bfd/elf32-i960.c
bfd/elf32-m32r.c
bfd/elf32-m68hc11.c
bfd/elf32-m68hc12.c
bfd/elf32-m68k.c
bfd/elf32-m88k.c
bfd/elf32-mcore.c
bfd/elf32-mips.c
bfd/elf32-openrisc.c
bfd/elf32-or32.c
bfd/elf32-pj.c
bfd/elf32-ppc.c
bfd/elf32-s390.c
bfd/elf32-sh-lin.c
bfd/elf32-sh-nbsd.c
bfd/elf32-sh.c
bfd/elf32-sh64.c
bfd/elf32-sparc.c
bfd/elf32-v850.c
bfd/elf32-xstormy16.c
bfd/elf32.c
bfd/elf64-alpha.c
bfd/elf64-gen.c
bfd/elf64-hppa.c
bfd/elf64-hppa.h
bfd/elf64-mips.c
bfd/elf64-mmix.c
bfd/elf64-ppc.c
bfd/elf64-ppc.h
bfd/elf64-s390.c
bfd/elf64-sh64.c
bfd/elf64-sparc.c
bfd/elf64-x86-64.c
bfd/elf64.c
bfd/elfarm-nabi.c
bfd/elfarm-oabi.c
bfd/elfcode.h
bfd/elfcore.h
bfd/elflink.c
bfd/elflink.h
bfd/elfxx-ia64.c
bfd/elfxx-mips.c
bfd/elfxx-mips.h
bfd/elfxx-target.h
bfd/epoc-pe-arm.c
bfd/epoc-pei-arm.c
bfd/format.c
bfd/freebsd.h
bfd/gen-aout.c
bfd/genlink.h
bfd/go32stub.h
bfd/hash.c
bfd/host-aout.c
bfd/hosts/alphalinux.h
bfd/hosts/alphavms.h
bfd/hosts/decstation.h
bfd/hosts/delta68.h
bfd/hosts/dpx2.h
bfd/hosts/hp300bsd.h
bfd/hosts/i386bsd.h
bfd/hosts/i386linux.h
bfd/hosts/i386mach3.h
bfd/hosts/i386sco.h
bfd/hosts/i860mach3.h
bfd/hosts/m68kaux.h
bfd/hosts/m68klinux.h
bfd/hosts/m88kmach3.h
bfd/hosts/mipsbsd.h
bfd/hosts/mipsmach3.h
bfd/hosts/news-mips.h
bfd/hosts/news.h
bfd/hosts/pc532mach.h
bfd/hosts/riscos.h
bfd/hosts/symmetry.h
bfd/hosts/tahoe.h
bfd/hosts/vaxbsd.h
bfd/hosts/vaxult.h
bfd/hosts/vaxult2.h
bfd/hp300bsd.c
bfd/hp300hpux.c
bfd/hppabsd-core.c
bfd/hpux-core.c
bfd/i386aout.c
bfd/i386bsd.c
bfd/i386dynix.c
bfd/i386freebsd.c
bfd/i386linux.c
bfd/i386lynx.c
bfd/i386mach3.c
bfd/i386msdos.c
bfd/i386netbsd.c
bfd/i386os9k.c
bfd/ieee.c
bfd/ihex.c
bfd/init.c
bfd/irix-core.c
bfd/libaout.h
bfd/libbfd-in.h
bfd/libbfd.c
bfd/libbfd.h
bfd/libcoff-in.h
bfd/libcoff.h
bfd/libecoff.h
bfd/libhppa.h
bfd/libieee.h
bfd/libnlm.h
bfd/liboasys.h
bfd/libpei.h
bfd/libxcoff.h
bfd/linker.c
bfd/lynx-core.c
bfd/m68k4knetbsd.c
bfd/m68klinux.c
bfd/m68klynx.c
bfd/m68knetbsd.c
bfd/m88kmach3.c
bfd/makefile.vms
bfd/merge.c
bfd/mipsbsd.c
bfd/mmo.c
bfd/mpw-config.in
bfd/mpw-make.sed
bfd/netbsd-core.c
bfd/netbsd.h
bfd/newsos3.c
bfd/nlm-target.h
bfd/nlm.c
bfd/nlm32-alpha.c
bfd/nlm32-i386.c
bfd/nlm32-ppc.c
bfd/nlm32-sparc.c
bfd/nlm32.c
bfd/nlm64.c
bfd/nlmcode.h
bfd/nlmswap.h
bfd/ns32k.h
bfd/ns32knetbsd.c
bfd/oasys.c
bfd/opncls.c
bfd/osf-core.c
bfd/pc532-mach.c
bfd/pdp11.c
bfd/pe-arm.c
bfd/pe-i386.c
bfd/pe-mcore.c
bfd/pe-mips.c
bfd/pe-ppc.c
bfd/pe-sh.c
bfd/peXXigen.c
bfd/pei-arm.c
bfd/pei-i386.c
bfd/pei-mcore.c
bfd/pei-mips.c
bfd/pei-ppc.c
bfd/pei-sh.c
bfd/peicode.h
bfd/po/.cvsignore
bfd/po/BLD-POTFILES.in
bfd/po/Make-in
bfd/po/SRC-POTFILES.in
bfd/po/bfd.pot
bfd/po/es.po
bfd/po/fr.po
bfd/po/ja.po
bfd/po/sv.po
bfd/po/tr.po
bfd/ppcboot.c
bfd/ptrace-core.c
bfd/reloc.c
bfd/reloc16.c
bfd/riscix.c
bfd/rs6000-core.c
bfd/sco5-core.c
bfd/section.c
bfd/som.c
bfd/som.h
bfd/sparclinux.c
bfd/sparclynx.c
bfd/sparcnetbsd.c
bfd/srec.c
bfd/stab-syms.c
bfd/stabs.c
bfd/stamp-h.in
bfd/sunos.c
bfd/syms.c
bfd/sysdep.h
bfd/targets.c
bfd/targmatch.sed
bfd/tekhex.c
bfd/trad-core.c
bfd/vaxnetbsd.c
bfd/versados.c
bfd/version.h
bfd/vms-gsd.c
bfd/vms-hdr.c
bfd/vms-misc.c
bfd/vms-tir.c
bfd/vms.c
bfd/vms.h
bfd/xcoff-target.h
bfd/xcofflink.c
config-ml.in
config.guess
config.if
config.sub
config/ChangeLog
config/acinclude.m4
config/mh-a68bsd
config/mh-aix386
config/mh-apollo68
config/mh-armpic
config/mh-cxux
config/mh-cygwin
config/mh-decstation
config/mh-delta88
config/mh-dgux
config/mh-dgux386
config/mh-djgpp
config/mh-elfalphapic
config/mh-hp300
config/mh-hpux
config/mh-hpux8
config/mh-i370pic
config/mh-ia64pic
config/mh-interix
config/mh-irix5
config/mh-irix6
config/mh-lynxrs6k
config/mh-m68kpic
config/mh-mingw32
config/mh-ncr3000
config/mh-ncrsvr43
config/mh-necv4
config/mh-openedition
config/mh-papic
config/mh-ppcpic
config/mh-riscos
config/mh-s390pic
config/mh-sco
config/mh-solaris
config/mh-sparcpic
config/mh-sysv
config/mh-sysv4
config/mh-sysv5
config/mh-x86pic
config/mpw-mh-mpw
config/mpw/ChangeLog
config/mpw/MoveIfChange
config/mpw/README
config/mpw/forward-include
config/mpw/g-mpw-make.sed
config/mpw/mpw-touch
config/mpw/mpw-true
config/mpw/null-command
config/mpw/open-brace
config/mpw/tr-7to8-src
config/mpw/true
config/mt-aix43
config/mt-alphaieee
config/mt-d30v
config/mt-linux
config/mt-netware
config/mt-ospace
config/mt-v810
config/mt-wince
configure
configure.in
djunpack.bat
etc/ChangeLog
etc/Makefile.in
etc/add-log.el
etc/add-log.vi
etc/configbuild.ein
etc/configbuild.fig
etc/configbuild.jin
etc/configbuild.tin
etc/configdev.ein
etc/configdev.fig
etc/configdev.jin
etc/configdev.tin
etc/configure
etc/configure.in
etc/configure.texi
etc/fdl.texi
etc/make-stds.texi
etc/standards.texi
etc/texi2pod.pl
gdb/29k-share/README
gdb/29k-share/udi/udi2go32.c
gdb/29k-share/udi/udiids.h
gdb/29k-share/udi/udip2soc.c
gdb/29k-share/udi/udiphcfg.h
gdb/29k-share/udi/udiphunix.h
gdb/29k-share/udi/udiproc.h
gdb/29k-share/udi/udipt29k.h
gdb/29k-share/udi/udiptcfg.h
gdb/29k-share/udi/udisoc.h
gdb/29k-share/udi/udr.c
gdb/29k-share/udi_soc
gdb/CONTRIBUTE
gdb/COPYING
gdb/ChangeLog-1990
gdb/ChangeLog-1991
gdb/ChangeLog-1992
gdb/ChangeLog-1993
gdb/ChangeLog-1994
gdb/ChangeLog-1995
gdb/ChangeLog-1996
gdb/ChangeLog-1997
gdb/ChangeLog-1998
gdb/ChangeLog-1999
gdb/ChangeLog-2000
gdb/ChangeLog-2001
gdb/ChangeLog-3.x
gdb/MAINTAINERS
gdb/NEWS
gdb/PROBLEMS
gdb/README
gdb/TODO
gdb/a68v-nat.c
gdb/abug-rom.c
gdb/acconfig.h
gdb/acinclude.m4
gdb/aclocal.m4
gdb/alpha-linux-tdep.c
gdb/alpha-nat.c
gdb/alpha-osf1-tdep.c
gdb/alpha-tdep.c
gdb/alpha-tdep.h
gdb/alphabsd-nat.c
gdb/alphabsd-tdep.c
gdb/alphabsd-tdep.h
gdb/alphafbsd-tdep.c
gdb/alphanbsd-tdep.c
gdb/annotate.c
gdb/annotate.h
gdb/arc-tdep.c
gdb/arch-utils.c
gdb/arch-utils.h
gdb/arm-linux-nat.c
gdb/arm-linux-tdep.c
gdb/arm-tdep.c
gdb/arm-tdep.h
gdb/armnbsd-nat.c
gdb/armnbsd-tdep.c
gdb/avr-tdep.c
gdb/ax-gdb.c
gdb/ax-gdb.h
gdb/ax-general.c
gdb/ax.h
gdb/bcache.c
gdb/bcache.h
gdb/blockframe.c
gdb/breakpoint.c
gdb/breakpoint.h
gdb/buildsym.c
gdb/buildsym.h
gdb/builtin-regs.c
gdb/builtin-regs.h
gdb/c-exp.y
gdb/c-lang.c
gdb/c-lang.h
gdb/c-typeprint.c
gdb/c-valprint.c
gdb/call-cmds.h
gdb/ch-exp.c
gdb/ch-lang.c
gdb/ch-lang.h
gdb/ch-typeprint.c
gdb/ch-valprint.c
gdb/cli-out.c
gdb/cli-out.h
gdb/cli/cli-cmds.c
gdb/cli/cli-cmds.h
gdb/cli/cli-decode.c
gdb/cli/cli-decode.h
gdb/cli/cli-dump.c
gdb/cli/cli-dump.h
gdb/cli/cli-script.c
gdb/cli/cli-script.h
gdb/cli/cli-setshow.c
gdb/cli/cli-setshow.h
gdb/cli/cli-utils.c
gdb/cli/cli-utils.h
gdb/coff-solib.c
gdb/coff-solib.h
gdb/coffread.c
gdb/command.h
gdb/complaints.c
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gdb/completer.c
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gdb/config.in
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gdb/config/alpha/alpha-linux.mt
gdb/config/alpha/alpha-osf1.mh
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gdb/config/alpha/alpha-osf2.mh
gdb/config/alpha/alpha-osf3.mh
gdb/config/alpha/fbsd.mh
gdb/config/alpha/fbsd.mt
gdb/config/alpha/nbsd.mh
gdb/config/alpha/nbsd.mt
gdb/config/alpha/nm-fbsd.h
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gdb/config/alpha/nm-nbsd.h
gdb/config/alpha/nm-osf.h
gdb/config/alpha/nm-osf2.h
gdb/config/alpha/nm-osf3.h
gdb/config/alpha/tm-alpha.h
gdb/config/alpha/tm-alphalinux.h
gdb/config/alpha/tm-fbsd.h
gdb/config/alpha/tm-nbsd.h
gdb/config/alpha/xm-alphalinux.h
gdb/config/alpha/xm-alphaosf.h
gdb/config/arc/arc.mt
gdb/config/arc/tm-arc.h
gdb/config/arm/embed.mt
gdb/config/arm/linux.mh
gdb/config/arm/linux.mt
gdb/config/arm/nbsd.mh
gdb/config/arm/nbsd.mt
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gdb/config/arm/nm-nbsd.h
gdb/config/arm/tm-arm.h
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gdb/config/d10v/d10v.mt
gdb/config/d30v/d30v.mt
gdb/config/d30v/tm-d30v.h
gdb/config/djgpp/README
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gdb/config/djgpp/djcheck.sh
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gdb/config/djgpp/fnchange.lst
gdb/config/fr30/fr30.mt
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gdb/config/h8300/h8300.mt
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gdb/config/i386/cygwin.mh
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gdb/config/i386/fbsd.mt
gdb/config/i386/gdbserve.mt
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gdb/config/i386/i386aix.mh
gdb/config/i386/i386aix.mt
gdb/config/i386/i386aout.mt
gdb/config/i386/i386bsd.mh
gdb/config/i386/i386bsd.mt
gdb/config/i386/i386dgux.mh
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gdb/config/i386/i386os9k.mt
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gdb/config/i386/i386v.mh
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gdb/config/i386/i386v32.mh
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gdb/config/i386/i386v4.mt
gdb/config/i386/i386v42mp.mh
gdb/config/i386/i386v42mp.mt
gdb/config/i386/linux.mh
gdb/config/i386/linux.mt
gdb/config/i386/nbsd.mh
gdb/config/i386/nbsd.mt
gdb/config/i386/nbsdelf.mh
gdb/config/i386/nbsdelf.mt
gdb/config/i386/ncr3000.mh
gdb/config/i386/ncr3000.mt
gdb/config/i386/nm-cygwin.h
gdb/config/i386/nm-fbsd.h
gdb/config/i386/nm-gnu.h
gdb/config/i386/nm-go32.h
gdb/config/i386/nm-i386.h
gdb/config/i386/nm-i386aix.h
gdb/config/i386/nm-i386bsd.h
gdb/config/i386/nm-i386lynx.h
gdb/config/i386/nm-i386mach.h
gdb/config/i386/nm-i386sco.h
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gdb/config/i386/nm-i386sco5.h
gdb/config/i386/nm-i386sol2.h
gdb/config/i386/nm-i386v.h
gdb/config/i386/nm-i386v4.h
gdb/config/i386/nm-i386v42mp.h
gdb/config/i386/nm-linux.h
gdb/config/i386/nm-m3.h
gdb/config/i386/nm-nbsd.h
gdb/config/i386/nm-nbsdelf.h
gdb/config/i386/nm-obsd.h
gdb/config/i386/nm-ptx4.h
gdb/config/i386/nm-symmetry.h
gdb/config/i386/nm-x86-64.h
gdb/config/i386/obsd.mh
gdb/config/i386/obsd.mt
gdb/config/i386/ptx.mh
gdb/config/i386/ptx.mt
gdb/config/i386/ptx4.mh
gdb/config/i386/ptx4.mt
gdb/config/i386/symmetry.mh
gdb/config/i386/symmetry.mt
gdb/config/i386/tm-cygwin.h
gdb/config/i386/tm-fbsd.h
gdb/config/i386/tm-go32.h
gdb/config/i386/tm-i386.h
gdb/config/i386/tm-i386aix.h
gdb/config/i386/tm-i386bsd.h
gdb/config/i386/tm-i386gnu.h
gdb/config/i386/tm-i386lynx.h
gdb/config/i386/tm-i386m3.h
gdb/config/i386/tm-i386mk.h
gdb/config/i386/tm-i386nw.h
gdb/config/i386/tm-i386os9k.h
gdb/config/i386/tm-i386sco5.h
gdb/config/i386/tm-i386sol2.h
gdb/config/i386/tm-i386v.h
gdb/config/i386/tm-i386v4.h
gdb/config/i386/tm-i386v42mp.h
gdb/config/i386/tm-linux.h
gdb/config/i386/tm-nbsd.h
gdb/config/i386/tm-nbsdelf.h
gdb/config/i386/tm-obsd.h
gdb/config/i386/tm-ptx.h
gdb/config/i386/tm-ptx4.h
gdb/config/i386/tm-symmetry.h
gdb/config/i386/tm-vxworks.h
gdb/config/i386/vxworks.mt
gdb/config/i386/x86-64linux.mh
gdb/config/i386/x86-64linux.mt
gdb/config/i386/xm-cygwin.h
gdb/config/i386/xm-go32.h
gdb/config/i386/xm-i386.h
gdb/config/i386/xm-i386aix.h
gdb/config/i386/xm-i386bsd.h
gdb/config/i386/xm-i386gnu.h
gdb/config/i386/xm-i386m3.h
gdb/config/i386/xm-i386mach.h
gdb/config/i386/xm-i386mk.h
gdb/config/i386/xm-i386sco.h
gdb/config/i386/xm-i386v.h
gdb/config/i386/xm-i386v32.h
gdb/config/i386/xm-i386v4.h
gdb/config/i386/xm-nbsd.h
gdb/config/i386/xm-ptx.h
gdb/config/i386/xm-ptx4.h
gdb/config/i386/xm-symmetry.h
gdb/config/i960/mon960.mt
gdb/config/i960/nindy960.mt
gdb/config/i960/tm-i960.h
gdb/config/i960/tm-mon960.h
gdb/config/i960/tm-nindy960.h
gdb/config/i960/tm-vx960.h
gdb/config/i960/vxworks960.mt
gdb/config/ia64/aix.mh
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gdb/config/ia64/linux.mh
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gdb/config/ia64/tm-linux.h
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gdb/config/ia64/xm-linux.h
gdb/config/m32r/m32r.mt
gdb/config/m32r/tm-m32r.h
gdb/config/m68hc11/m68hc11.mt
gdb/config/m68k/3b1.mh
gdb/config/m68k/3b1.mt
gdb/config/m68k/apollo68b.mh
gdb/config/m68k/apollo68b.mt
gdb/config/m68k/apollo68v.mh
gdb/config/m68k/cisco.mt
gdb/config/m68k/delta68.mh
gdb/config/m68k/delta68.mt
gdb/config/m68k/dpx2.mh
gdb/config/m68k/dpx2.mt
gdb/config/m68k/es1800.mt
gdb/config/m68k/hp300bsd.mh
gdb/config/m68k/hp300bsd.mt
gdb/config/m68k/hp300hpux.mh
gdb/config/m68k/hp300hpux.mt
gdb/config/m68k/linux.mh
gdb/config/m68k/linux.mt
gdb/config/m68k/m68klynx.mh
gdb/config/m68k/m68klynx.mt
gdb/config/m68k/m68kv4.mh
gdb/config/m68k/m68kv4.mt
gdb/config/m68k/monitor.mt
gdb/config/m68k/nbsd.mh
gdb/config/m68k/nbsd.mt
gdb/config/m68k/nm-apollo68b.h
gdb/config/m68k/nm-apollo68v.h
gdb/config/m68k/nm-delta68.h
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gdb/config/m68k/nm-sysv4.h
gdb/config/m68k/os68k.mt
gdb/config/m68k/st2000.mt
gdb/config/m68k/sun2os3.mh
gdb/config/m68k/sun2os3.mt
gdb/config/m68k/sun2os4.mh
gdb/config/m68k/sun2os4.mt
gdb/config/m68k/sun3os3.mh
gdb/config/m68k/sun3os3.mt
gdb/config/m68k/sun3os4.mh
gdb/config/m68k/sun3os4.mt
gdb/config/m68k/tm-3b1.h
gdb/config/m68k/tm-apollo68b.h
gdb/config/m68k/tm-cisco.h
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gdb/config/m68k/tm-dpx2.h
gdb/config/m68k/tm-es1800.h
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gdb/config/m68k/tm-m68kv4.h
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gdb/config/m68k/tm-sun3.h
gdb/config/m68k/tm-sun3os4.h
gdb/config/m68k/tm-vx68.h
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gdb/config/m68k/xm-3b1.h
gdb/config/m68k/xm-apollo68b.h
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gdb/config/m68k/xm-sun3os4.h
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gdb/config/m88k/delta88v4.mh
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gdb/config/m88k/m88k.mh
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gdb/config/mips/bigmips.mt
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gdb/config/mips/embedl.mt
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gdb/config/mips/irix3.mh
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gdb/config/mips/irix4.mh
gdb/config/mips/irix5.mh
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gdb/config/mips/mipsm3.mh
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gdb/config/mips/tm-vr4100.h
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gdb/config/mips/vr5000.mt
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gdb/config/mips/vxmips.mt
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gdb/config/mn10200/mn10200.mt
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gdb/config/mn10300/mn10300.mt
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gdb/config/none/none.mh
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gdb/config/ns32k/nbsd.mh
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gdb/config/pa/hppa64.mt
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gdb/config/pa/hppaosf.mh
gdb/config/pa/hppaosf.mt
gdb/config/pa/hppapro.mt
gdb/config/pa/hpux1020.mh
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gdb/config/pa/hpux11.mh
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gdb/config/pa/hpux11w.mh
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gdb/config/pa/xm-hppab.h
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gdb/config/pa/xm-pa.h
gdb/config/powerpc/aix.mh
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gdb/config/romp/rtbsd.mh
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gdb/config/rs6000/aix4.mh
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gdb/config/rs6000/nm-rs6000ly.h
gdb/config/rs6000/rs6000.mh
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gdb/config/s390/nm-linux.h
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gdb/config/sh/embed.mt
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gdb/cpu32bug-rom.c
gdb/cris-tdep.c
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gdb/d10v-tdep.c
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gdb/dbxread.c
gdb/dcache.c
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gdb/delta68-nat.c
gdb/demangle.c
gdb/dink32-rom.c
gdb/doc/ChangeLog
gdb/doc/LRS
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gdb/doc/a4rc.sed
gdb/doc/agentexpr.texi
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gdb/doc/annotate.texi
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gdb/doc/gdb.texinfo
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gdb/dve3900-rom.c
gdb/dwarf2cfi.c
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gdb/exc_request.defs
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gdb/f-exp.y
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gdb/f-typeprint.c
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gdb/fbsd-proc.c
gdb/findvar.c
gdb/fork-child.c
gdb/fr30-tdep.c
gdb/frame.c
gdb/frame.h
gdb/gcore.c
gdb/gdb-events.c
gdb/gdb-events.h
gdb/gdb-events.sh
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gdb/gdb.1
gdb/gdb.gdb
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gdb/gdb_dirent.h
gdb/gdb_indent.sh
gdb/gdb_proc_service.h
gdb/gdb_regex.h
gdb/gdb_stat.h
gdb/gdb_string.h
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gdb/gdbarch.c
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gdb/gdbarch.sh
gdb/gdbcmd.h
gdb/gdbcore.h
gdb/gdbinit.in
gdb/gdbserver/Makefile.in
gdb/gdbserver/README
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sim/testsuite/sim/fr30/asr2.cgs
sim/testsuite/sim/fr30/bandh.cgs
sim/testsuite/sim/fr30/bandl.cgs
sim/testsuite/sim/fr30/bc.cgs
sim/testsuite/sim/fr30/beorh.cgs
sim/testsuite/sim/fr30/beorl.cgs
sim/testsuite/sim/fr30/beq.cgs
sim/testsuite/sim/fr30/bge.cgs
sim/testsuite/sim/fr30/bgt.cgs
sim/testsuite/sim/fr30/bhi.cgs
sim/testsuite/sim/fr30/ble.cgs
sim/testsuite/sim/fr30/bls.cgs
sim/testsuite/sim/fr30/blt.cgs
sim/testsuite/sim/fr30/bn.cgs
sim/testsuite/sim/fr30/bnc.cgs
sim/testsuite/sim/fr30/bne.cgs
sim/testsuite/sim/fr30/bno.cgs
sim/testsuite/sim/fr30/bnv.cgs
sim/testsuite/sim/fr30/borh.cgs
sim/testsuite/sim/fr30/borl.cgs
sim/testsuite/sim/fr30/bp.cgs
sim/testsuite/sim/fr30/bra.cgs
sim/testsuite/sim/fr30/btsth.cgs
sim/testsuite/sim/fr30/btstl.cgs
sim/testsuite/sim/fr30/bv.cgs
sim/testsuite/sim/fr30/call.cgs
sim/testsuite/sim/fr30/cmp.cgs
sim/testsuite/sim/fr30/cmp2.cgs
sim/testsuite/sim/fr30/copld.cgs
sim/testsuite/sim/fr30/copop.cgs
sim/testsuite/sim/fr30/copst.cgs
sim/testsuite/sim/fr30/copsv.cgs
sim/testsuite/sim/fr30/div.ms
sim/testsuite/sim/fr30/div0s.cgs
sim/testsuite/sim/fr30/div0u.cgs
sim/testsuite/sim/fr30/div1.cgs
sim/testsuite/sim/fr30/div2.cgs
sim/testsuite/sim/fr30/div3.cgs
sim/testsuite/sim/fr30/div4s.cgs
sim/testsuite/sim/fr30/dmov.cgs
sim/testsuite/sim/fr30/dmovb.cgs
sim/testsuite/sim/fr30/dmovh.cgs
sim/testsuite/sim/fr30/enter.cgs
sim/testsuite/sim/fr30/eor.cgs
sim/testsuite/sim/fr30/eorb.cgs
sim/testsuite/sim/fr30/eorh.cgs
sim/testsuite/sim/fr30/extsb.cgs
sim/testsuite/sim/fr30/extsh.cgs
sim/testsuite/sim/fr30/extub.cgs
sim/testsuite/sim/fr30/extuh.cgs
sim/testsuite/sim/fr30/hello.ms
sim/testsuite/sim/fr30/int.cgs
sim/testsuite/sim/fr30/inte.cgs
sim/testsuite/sim/fr30/jmp.cgs
sim/testsuite/sim/fr30/ld.cgs
sim/testsuite/sim/fr30/ldi20.cgs
sim/testsuite/sim/fr30/ldi32.cgs
sim/testsuite/sim/fr30/ldi8.cgs
sim/testsuite/sim/fr30/ldm0.cgs
sim/testsuite/sim/fr30/ldm1.cgs
sim/testsuite/sim/fr30/ldres.cgs
sim/testsuite/sim/fr30/ldub.cgs
sim/testsuite/sim/fr30/lduh.cgs
sim/testsuite/sim/fr30/leave.cgs
sim/testsuite/sim/fr30/lsl.cgs
sim/testsuite/sim/fr30/lsl2.cgs
sim/testsuite/sim/fr30/lsr.cgs
sim/testsuite/sim/fr30/lsr2.cgs
sim/testsuite/sim/fr30/misc.exp
sim/testsuite/sim/fr30/mov.cgs
sim/testsuite/sim/fr30/mul.cgs
sim/testsuite/sim/fr30/mulh.cgs
sim/testsuite/sim/fr30/mulu.cgs
sim/testsuite/sim/fr30/muluh.cgs
sim/testsuite/sim/fr30/nop.cgs
sim/testsuite/sim/fr30/or.cgs
sim/testsuite/sim/fr30/orb.cgs
sim/testsuite/sim/fr30/orccr.cgs
sim/testsuite/sim/fr30/orh.cgs
sim/testsuite/sim/fr30/ret.cgs
sim/testsuite/sim/fr30/reti.cgs
sim/testsuite/sim/fr30/st.cgs
sim/testsuite/sim/fr30/stb.cgs
sim/testsuite/sim/fr30/sth.cgs
sim/testsuite/sim/fr30/stilm.cgs
sim/testsuite/sim/fr30/stm0.cgs
sim/testsuite/sim/fr30/stm1.cgs
sim/testsuite/sim/fr30/stres.cgs
sim/testsuite/sim/fr30/sub.cgs
sim/testsuite/sim/fr30/subc.cgs
sim/testsuite/sim/fr30/subn.cgs
sim/testsuite/sim/fr30/testutils.inc
sim/testsuite/sim/fr30/xchb.cgs
sim/testsuite/sim/m32r/add.cgs
sim/testsuite/sim/m32r/add3.cgs
sim/testsuite/sim/m32r/addi.cgs
sim/testsuite/sim/m32r/addv.cgs
sim/testsuite/sim/m32r/addv3.cgs
sim/testsuite/sim/m32r/addx.cgs
sim/testsuite/sim/m32r/allinsn.exp
sim/testsuite/sim/m32r/and.cgs
sim/testsuite/sim/m32r/and3.cgs
sim/testsuite/sim/m32r/bc24.cgs
sim/testsuite/sim/m32r/bc8.cgs
sim/testsuite/sim/m32r/beq.cgs
sim/testsuite/sim/m32r/beqz.cgs
sim/testsuite/sim/m32r/bgez.cgs
sim/testsuite/sim/m32r/bgtz.cgs
sim/testsuite/sim/m32r/bl24.cgs
sim/testsuite/sim/m32r/bl8.cgs
sim/testsuite/sim/m32r/blez.cgs
sim/testsuite/sim/m32r/bltz.cgs
sim/testsuite/sim/m32r/bnc24.cgs
sim/testsuite/sim/m32r/bnc8.cgs
sim/testsuite/sim/m32r/bne.cgs
sim/testsuite/sim/m32r/bnez.cgs
sim/testsuite/sim/m32r/bra24.cgs
sim/testsuite/sim/m32r/bra8.cgs
sim/testsuite/sim/m32r/cmp.cgs
sim/testsuite/sim/m32r/cmpi.cgs
sim/testsuite/sim/m32r/cmpu.cgs
sim/testsuite/sim/m32r/cmpui.cgs
sim/testsuite/sim/m32r/div.cgs
sim/testsuite/sim/m32r/divu.cgs
sim/testsuite/sim/m32r/hello.ms
sim/testsuite/sim/m32r/hw-trap.ms
sim/testsuite/sim/m32r/jl.cgs
sim/testsuite/sim/m32r/jmp.cgs
sim/testsuite/sim/m32r/ld-d.cgs
sim/testsuite/sim/m32r/ld-plus.cgs
sim/testsuite/sim/m32r/ld.cgs
sim/testsuite/sim/m32r/ld24.cgs
sim/testsuite/sim/m32r/ldb-d.cgs
sim/testsuite/sim/m32r/ldb.cgs
sim/testsuite/sim/m32r/ldh-d.cgs
sim/testsuite/sim/m32r/ldh.cgs
sim/testsuite/sim/m32r/ldi16.cgs
sim/testsuite/sim/m32r/ldi8.cgs
sim/testsuite/sim/m32r/ldub-d.cgs
sim/testsuite/sim/m32r/ldub.cgs
sim/testsuite/sim/m32r/lduh-d.cgs
sim/testsuite/sim/m32r/lduh.cgs
sim/testsuite/sim/m32r/lock.cgs
sim/testsuite/sim/m32r/machi.cgs
sim/testsuite/sim/m32r/maclo.cgs
sim/testsuite/sim/m32r/macwhi.cgs
sim/testsuite/sim/m32r/macwlo.cgs
sim/testsuite/sim/m32r/misc.exp
sim/testsuite/sim/m32r/mul.cgs
sim/testsuite/sim/m32r/mulhi.cgs
sim/testsuite/sim/m32r/mullo.cgs
sim/testsuite/sim/m32r/mulwhi.cgs
sim/testsuite/sim/m32r/mulwlo.cgs
sim/testsuite/sim/m32r/mv.cgs
sim/testsuite/sim/m32r/mvfachi.cgs
sim/testsuite/sim/m32r/mvfaclo.cgs
sim/testsuite/sim/m32r/mvfacmi.cgs
sim/testsuite/sim/m32r/mvfc.cgs
sim/testsuite/sim/m32r/mvtachi.cgs
sim/testsuite/sim/m32r/mvtaclo.cgs
sim/testsuite/sim/m32r/mvtc.cgs
sim/testsuite/sim/m32r/neg.cgs
sim/testsuite/sim/m32r/nop.cgs
sim/testsuite/sim/m32r/not.cgs
sim/testsuite/sim/m32r/or.cgs
sim/testsuite/sim/m32r/or3.cgs
sim/testsuite/sim/m32r/rac.cgs
sim/testsuite/sim/m32r/rach.cgs
sim/testsuite/sim/m32r/rem.cgs
sim/testsuite/sim/m32r/remu.cgs
sim/testsuite/sim/m32r/rte.cgs
sim/testsuite/sim/m32r/seth.cgs
sim/testsuite/sim/m32r/sll.cgs
sim/testsuite/sim/m32r/sll3.cgs
sim/testsuite/sim/m32r/slli.cgs
sim/testsuite/sim/m32r/sra.cgs
sim/testsuite/sim/m32r/sra3.cgs
sim/testsuite/sim/m32r/srai.cgs
sim/testsuite/sim/m32r/srl.cgs
sim/testsuite/sim/m32r/srl3.cgs
sim/testsuite/sim/m32r/srli.cgs
sim/testsuite/sim/m32r/st-d.cgs
sim/testsuite/sim/m32r/st-minus.cgs
sim/testsuite/sim/m32r/st-plus.cgs
sim/testsuite/sim/m32r/st.cgs
sim/testsuite/sim/m32r/stb-d.cgs
sim/testsuite/sim/m32r/stb.cgs
sim/testsuite/sim/m32r/sth-d.cgs
sim/testsuite/sim/m32r/sth.cgs
sim/testsuite/sim/m32r/sub.cgs
sim/testsuite/sim/m32r/subv.cgs
sim/testsuite/sim/m32r/subx.cgs
sim/testsuite/sim/m32r/testutils.inc
sim/testsuite/sim/m32r/trap.cgs
sim/testsuite/sim/m32r/unlock.cgs
sim/testsuite/sim/m32r/uread16.ms
sim/testsuite/sim/m32r/uread32.ms
sim/testsuite/sim/m32r/uwrite16.ms
sim/testsuite/sim/m32r/uwrite32.ms
sim/testsuite/sim/m32r/xor.cgs
sim/testsuite/sim/m32r/xor3.cgs
sim/tic80/ChangeLog
sim/tic80/Makefile.in
sim/tic80/acconfig.h
sim/tic80/alu.h
sim/tic80/config.in
sim/tic80/configure
sim/tic80/configure.in
sim/tic80/cpu.h
sim/tic80/interp.c
sim/tic80/misc.c
sim/tic80/sim-calls.c
sim/tic80/sim-main.h
sim/tic80/tic80.dc
sim/tic80/tic80.ic
sim/tic80/tic80.igen
sim/v850/ChangeLog
sim/v850/Makefile.in
sim/v850/acconfig.h
sim/v850/config.in
sim/v850/configure
sim/v850/configure.in
sim/v850/interp.c
sim/v850/sim-main.h
sim/v850/simops.c
sim/v850/simops.h
sim/v850/v850-dc
sim/v850/v850.igen
sim/v850/v850_sim.h
sim/w65/ChangeLog
sim/w65/Makefile.in
sim/w65/acconfig.h
sim/w65/config.in
sim/w65/configure
sim/w65/configure.in
sim/w65/gencode.c
sim/w65/interp.c
sim/w65/interp.h
sim/w65/run.c
sim/z8k/ChangeLog
sim/z8k/Makefile.in
sim/z8k/acconfig.h
sim/z8k/comped1.c
sim/z8k/comped2.c
sim/z8k/comped3.c
sim/z8k/compedb3.c
sim/z8k/config.in
sim/z8k/configure
sim/z8k/configure.in
sim/z8k/iface.c
sim/z8k/inlines.h
sim/z8k/list.c
sim/z8k/mem.c
sim/z8k/mem.h
sim/z8k/quick.c
sim/z8k/sim.h
sim/z8k/support.c
sim/z8k/syscall.h
sim/z8k/tconfig.in
sim/z8k/tm.h
sim/z8k/writecode.c
symlink-tree
texinfo/texinfo.tex
ylwrap
Diffstat (limited to 'bfd/elflink.h')
-rw-r--r-- | bfd/elflink.h | 8419 |
1 files changed, 0 insertions, 8419 deletions
diff --git a/bfd/elflink.h b/bfd/elflink.h deleted file mode 100644 index bfe6374..0000000 --- a/bfd/elflink.h +++ /dev/null @@ -1,8419 +0,0 @@ -/* ELF linker support. - Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 - Free Software Foundation, Inc. - -This file is part of BFD, the Binary File Descriptor library. - -This program is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2 of the License, or -(at your option) any later version. - -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with this program; if not, write to the Free Software -Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -/* ELF linker code. */ - -/* This struct is used to pass information to routines called via - elf_link_hash_traverse which must return failure. */ - -struct elf_info_failed -{ - boolean failed; - struct bfd_link_info *info; - struct bfd_elf_version_tree *verdefs; -}; - -static boolean is_global_data_symbol_definition - PARAMS ((bfd *, Elf_Internal_Sym *)); -static boolean elf_link_is_defined_archive_symbol - PARAMS ((bfd *, carsym *)); -static boolean elf_link_add_object_symbols - PARAMS ((bfd *, struct bfd_link_info *)); -static boolean elf_link_add_archive_symbols - PARAMS ((bfd *, struct bfd_link_info *)); -static boolean elf_merge_symbol - PARAMS ((bfd *, struct bfd_link_info *, const char *, - Elf_Internal_Sym *, asection **, bfd_vma *, - struct elf_link_hash_entry **, boolean *, boolean *, - boolean *, boolean)); -static boolean elf_add_default_symbol - PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, - const char *, Elf_Internal_Sym *, asection **, bfd_vma *, - boolean *, boolean, boolean)); -static boolean elf_export_symbol - PARAMS ((struct elf_link_hash_entry *, PTR)); -static boolean elf_finalize_dynstr - PARAMS ((bfd *, struct bfd_link_info *)); -static boolean elf_fix_symbol_flags - PARAMS ((struct elf_link_hash_entry *, struct elf_info_failed *)); -static boolean elf_adjust_dynamic_symbol - PARAMS ((struct elf_link_hash_entry *, PTR)); -static boolean elf_link_find_version_dependencies - PARAMS ((struct elf_link_hash_entry *, PTR)); -static boolean elf_link_assign_sym_version - PARAMS ((struct elf_link_hash_entry *, PTR)); -static boolean elf_collect_hash_codes - PARAMS ((struct elf_link_hash_entry *, PTR)); -static boolean elf_link_read_relocs_from_section - PARAMS ((bfd *, Elf_Internal_Shdr *, PTR, Elf_Internal_Rela *)); -static size_t compute_bucket_count - PARAMS ((struct bfd_link_info *)); -static void elf_link_output_relocs - PARAMS ((bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *)); -static boolean elf_link_size_reloc_section - PARAMS ((bfd *, Elf_Internal_Shdr *, asection *)); -static void elf_link_adjust_relocs - PARAMS ((bfd *, Elf_Internal_Shdr *, unsigned int, - struct elf_link_hash_entry **)); -static int elf_link_sort_cmp1 - PARAMS ((const void *, const void *)); -static int elf_link_sort_cmp2 - PARAMS ((const void *, const void *)); -static size_t elf_link_sort_relocs - PARAMS ((bfd *, struct bfd_link_info *, asection **)); -static boolean elf_section_ignore_discarded_relocs - PARAMS ((asection *)); - -/* Given an ELF BFD, add symbols to the global hash table as - appropriate. */ - -boolean -elf_bfd_link_add_symbols (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - switch (bfd_get_format (abfd)) - { - case bfd_object: - return elf_link_add_object_symbols (abfd, info); - case bfd_archive: - return elf_link_add_archive_symbols (abfd, info); - default: - bfd_set_error (bfd_error_wrong_format); - return false; - } -} - -/* Return true iff this is a non-common, definition of a non-function symbol. */ -static boolean -is_global_data_symbol_definition (abfd, sym) - bfd * abfd ATTRIBUTE_UNUSED; - Elf_Internal_Sym * sym; -{ - /* Local symbols do not count, but target specific ones might. */ - if (ELF_ST_BIND (sym->st_info) != STB_GLOBAL - && ELF_ST_BIND (sym->st_info) < STB_LOOS) - return false; - - /* Function symbols do not count. */ - if (ELF_ST_TYPE (sym->st_info) == STT_FUNC) - return false; - - /* If the section is undefined, then so is the symbol. */ - if (sym->st_shndx == SHN_UNDEF) - return false; - - /* If the symbol is defined in the common section, then - it is a common definition and so does not count. */ - if (sym->st_shndx == SHN_COMMON) - return false; - - /* If the symbol is in a target specific section then we - must rely upon the backend to tell us what it is. */ - if (sym->st_shndx >= SHN_LORESERVE && sym->st_shndx < SHN_ABS) - /* FIXME - this function is not coded yet: - - return _bfd_is_global_symbol_definition (abfd, sym); - - Instead for now assume that the definition is not global, - Even if this is wrong, at least the linker will behave - in the same way that it used to do. */ - return false; - - return true; -} - -/* Search the symbol table of the archive element of the archive ABFD - whose archive map contains a mention of SYMDEF, and determine if - the symbol is defined in this element. */ -static boolean -elf_link_is_defined_archive_symbol (abfd, symdef) - bfd * abfd; - carsym * symdef; -{ - Elf_Internal_Shdr * hdr; - Elf_Internal_Shdr * shndx_hdr; - Elf_External_Sym * esym; - Elf_External_Sym * esymend; - Elf_External_Sym * buf = NULL; - Elf_External_Sym_Shndx * shndx_buf = NULL; - Elf_External_Sym_Shndx * shndx; - bfd_size_type symcount; - bfd_size_type extsymcount; - bfd_size_type extsymoff; - boolean result = false; - file_ptr pos; - bfd_size_type amt; - - abfd = _bfd_get_elt_at_filepos (abfd, symdef->file_offset); - if (abfd == (bfd *) NULL) - return false; - - if (! bfd_check_format (abfd, bfd_object)) - return false; - - /* If we have already included the element containing this symbol in the - link then we do not need to include it again. Just claim that any symbol - it contains is not a definition, so that our caller will not decide to - (re)include this element. */ - if (abfd->archive_pass) - return false; - - /* Select the appropriate symbol table. */ - if ((abfd->flags & DYNAMIC) == 0 || elf_dynsymtab (abfd) == 0) - { - hdr = &elf_tdata (abfd)->symtab_hdr; - shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; - } - else - { - hdr = &elf_tdata (abfd)->dynsymtab_hdr; - shndx_hdr = NULL; - } - - symcount = hdr->sh_size / sizeof (Elf_External_Sym); - - /* The sh_info field of the symtab header tells us where the - external symbols start. We don't care about the local symbols. */ - if (elf_bad_symtab (abfd)) - { - extsymcount = symcount; - extsymoff = 0; - } - else - { - extsymcount = symcount - hdr->sh_info; - extsymoff = hdr->sh_info; - } - - amt = extsymcount * sizeof (Elf_External_Sym); - buf = (Elf_External_Sym *) bfd_malloc (amt); - if (buf == NULL && extsymcount != 0) - return false; - - /* Read in the symbol table. - FIXME: This ought to be cached somewhere. */ - pos = hdr->sh_offset + extsymoff * sizeof (Elf_External_Sym); - if (bfd_seek (abfd, pos, SEEK_SET) != 0 - || bfd_bread ((PTR) buf, amt, abfd) != amt) - goto error_exit; - - if (shndx_hdr != NULL && shndx_hdr->sh_size != 0) - { - amt = extsymcount * sizeof (Elf_External_Sym_Shndx); - shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (amt); - if (shndx_buf == NULL && extsymcount != 0) - goto error_exit; - - pos = shndx_hdr->sh_offset + extsymoff * sizeof (Elf_External_Sym_Shndx); - if (bfd_seek (abfd, pos, SEEK_SET) != 0 - || bfd_bread ((PTR) shndx_buf, amt, abfd) != amt) - goto error_exit; - } - - /* Scan the symbol table looking for SYMDEF. */ - esymend = buf + extsymcount; - for (esym = buf, shndx = shndx_buf; - esym < esymend; - esym++, shndx = (shndx != NULL ? shndx + 1 : NULL)) - { - Elf_Internal_Sym sym; - const char * name; - - elf_swap_symbol_in (abfd, esym, shndx, &sym); - - name = bfd_elf_string_from_elf_section (abfd, hdr->sh_link, sym.st_name); - if (name == (const char *) NULL) - break; - - if (strcmp (name, symdef->name) == 0) - { - result = is_global_data_symbol_definition (abfd, & sym); - break; - } - } - - error_exit: - if (shndx_buf != NULL) - free (shndx_buf); - if (buf != NULL) - free (buf); - - return result; -} - -/* Add symbols from an ELF archive file to the linker hash table. We - don't use _bfd_generic_link_add_archive_symbols because of a - problem which arises on UnixWare. The UnixWare libc.so is an - archive which includes an entry libc.so.1 which defines a bunch of - symbols. The libc.so archive also includes a number of other - object files, which also define symbols, some of which are the same - as those defined in libc.so.1. Correct linking requires that we - consider each object file in turn, and include it if it defines any - symbols we need. _bfd_generic_link_add_archive_symbols does not do - this; it looks through the list of undefined symbols, and includes - any object file which defines them. When this algorithm is used on - UnixWare, it winds up pulling in libc.so.1 early and defining a - bunch of symbols. This means that some of the other objects in the - archive are not included in the link, which is incorrect since they - precede libc.so.1 in the archive. - - Fortunately, ELF archive handling is simpler than that done by - _bfd_generic_link_add_archive_symbols, which has to allow for a.out - oddities. In ELF, if we find a symbol in the archive map, and the - symbol is currently undefined, we know that we must pull in that - object file. - - Unfortunately, we do have to make multiple passes over the symbol - table until nothing further is resolved. */ - -static boolean -elf_link_add_archive_symbols (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - symindex c; - boolean *defined = NULL; - boolean *included = NULL; - carsym *symdefs; - boolean loop; - bfd_size_type amt; - - if (! bfd_has_map (abfd)) - { - /* An empty archive is a special case. */ - if (bfd_openr_next_archived_file (abfd, (bfd *) NULL) == NULL) - return true; - bfd_set_error (bfd_error_no_armap); - return false; - } - - /* Keep track of all symbols we know to be already defined, and all - files we know to be already included. This is to speed up the - second and subsequent passes. */ - c = bfd_ardata (abfd)->symdef_count; - if (c == 0) - return true; - amt = c; - amt *= sizeof (boolean); - defined = (boolean *) bfd_malloc (amt); - included = (boolean *) bfd_malloc (amt); - if (defined == (boolean *) NULL || included == (boolean *) NULL) - goto error_return; - memset (defined, 0, (size_t) amt); - memset (included, 0, (size_t) amt); - - symdefs = bfd_ardata (abfd)->symdefs; - - do - { - file_ptr last; - symindex i; - carsym *symdef; - carsym *symdefend; - - loop = false; - last = -1; - - symdef = symdefs; - symdefend = symdef + c; - for (i = 0; symdef < symdefend; symdef++, i++) - { - struct elf_link_hash_entry *h; - bfd *element; - struct bfd_link_hash_entry *undefs_tail; - symindex mark; - - if (defined[i] || included[i]) - continue; - if (symdef->file_offset == last) - { - included[i] = true; - continue; - } - - h = elf_link_hash_lookup (elf_hash_table (info), symdef->name, - false, false, false); - - if (h == NULL) - { - char *p, *copy; - - /* If this is a default version (the name contains @@), - look up the symbol again without the version. The - effect is that references to the symbol without the - version will be matched by the default symbol in the - archive. */ - - p = strchr (symdef->name, ELF_VER_CHR); - if (p == NULL || p[1] != ELF_VER_CHR) - continue; - - copy = bfd_alloc (abfd, (bfd_size_type) (p - symdef->name + 1)); - if (copy == NULL) - goto error_return; - memcpy (copy, symdef->name, (size_t) (p - symdef->name)); - copy[p - symdef->name] = '\0'; - - h = elf_link_hash_lookup (elf_hash_table (info), copy, - false, false, false); - - bfd_release (abfd, copy); - } - - if (h == NULL) - continue; - - if (h->root.type == bfd_link_hash_common) - { - /* We currently have a common symbol. The archive map contains - a reference to this symbol, so we may want to include it. We - only want to include it however, if this archive element - contains a definition of the symbol, not just another common - declaration of it. - - Unfortunately some archivers (including GNU ar) will put - declarations of common symbols into their archive maps, as - well as real definitions, so we cannot just go by the archive - map alone. Instead we must read in the element's symbol - table and check that to see what kind of symbol definition - this is. */ - if (! elf_link_is_defined_archive_symbol (abfd, symdef)) - continue; - } - else if (h->root.type != bfd_link_hash_undefined) - { - if (h->root.type != bfd_link_hash_undefweak) - defined[i] = true; - continue; - } - - /* We need to include this archive member. */ - element = _bfd_get_elt_at_filepos (abfd, symdef->file_offset); - if (element == (bfd *) NULL) - goto error_return; - - if (! bfd_check_format (element, bfd_object)) - goto error_return; - - /* Doublecheck that we have not included this object - already--it should be impossible, but there may be - something wrong with the archive. */ - if (element->archive_pass != 0) - { - bfd_set_error (bfd_error_bad_value); - goto error_return; - } - element->archive_pass = 1; - - undefs_tail = info->hash->undefs_tail; - - if (! (*info->callbacks->add_archive_element) (info, element, - symdef->name)) - goto error_return; - if (! elf_link_add_object_symbols (element, info)) - goto error_return; - - /* If there are any new undefined symbols, we need to make - another pass through the archive in order to see whether - they can be defined. FIXME: This isn't perfect, because - common symbols wind up on undefs_tail and because an - undefined symbol which is defined later on in this pass - does not require another pass. This isn't a bug, but it - does make the code less efficient than it could be. */ - if (undefs_tail != info->hash->undefs_tail) - loop = true; - - /* Look backward to mark all symbols from this object file - which we have already seen in this pass. */ - mark = i; - do - { - included[mark] = true; - if (mark == 0) - break; - --mark; - } - while (symdefs[mark].file_offset == symdef->file_offset); - - /* We mark subsequent symbols from this object file as we go - on through the loop. */ - last = symdef->file_offset; - } - } - while (loop); - - free (defined); - free (included); - - return true; - - error_return: - if (defined != (boolean *) NULL) - free (defined); - if (included != (boolean *) NULL) - free (included); - return false; -} - -/* This function is called when we want to define a new symbol. It - handles the various cases which arise when we find a definition in - a dynamic object, or when there is already a definition in a - dynamic object. The new symbol is described by NAME, SYM, PSEC, - and PVALUE. We set SYM_HASH to the hash table entry. We set - OVERRIDE if the old symbol is overriding a new definition. We set - TYPE_CHANGE_OK if it is OK for the type to change. We set - SIZE_CHANGE_OK if it is OK for the size to change. By OK to - change, we mean that we shouldn't warn if the type or size does - change. DT_NEEDED indicates if it comes from a DT_NEEDED entry of - a shared object. */ - -static boolean -elf_merge_symbol (abfd, info, name, sym, psec, pvalue, sym_hash, - override, type_change_ok, size_change_ok, dt_needed) - bfd *abfd; - struct bfd_link_info *info; - const char *name; - Elf_Internal_Sym *sym; - asection **psec; - bfd_vma *pvalue; - struct elf_link_hash_entry **sym_hash; - boolean *override; - boolean *type_change_ok; - boolean *size_change_ok; - boolean dt_needed; -{ - asection *sec; - struct elf_link_hash_entry *h; - int bind; - bfd *oldbfd; - boolean newdyn, olddyn, olddef, newdef, newdyncommon, olddyncommon; - - *override = false; - - sec = *psec; - bind = ELF_ST_BIND (sym->st_info); - - if (! bfd_is_und_section (sec)) - h = elf_link_hash_lookup (elf_hash_table (info), name, true, false, false); - else - h = ((struct elf_link_hash_entry *) - bfd_wrapped_link_hash_lookup (abfd, info, name, true, false, false)); - if (h == NULL) - return false; - *sym_hash = h; - - /* This code is for coping with dynamic objects, and is only useful - if we are doing an ELF link. */ - if (info->hash->creator != abfd->xvec) - return true; - - /* For merging, we only care about real symbols. */ - - while (h->root.type == bfd_link_hash_indirect - || h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - - /* If we just created the symbol, mark it as being an ELF symbol. - Other than that, there is nothing to do--there is no merge issue - with a newly defined symbol--so we just return. */ - - if (h->root.type == bfd_link_hash_new) - { - h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; - return true; - } - - /* OLDBFD is a BFD associated with the existing symbol. */ - - switch (h->root.type) - { - default: - oldbfd = NULL; - break; - - case bfd_link_hash_undefined: - case bfd_link_hash_undefweak: - oldbfd = h->root.u.undef.abfd; - break; - - case bfd_link_hash_defined: - case bfd_link_hash_defweak: - oldbfd = h->root.u.def.section->owner; - break; - - case bfd_link_hash_common: - oldbfd = h->root.u.c.p->section->owner; - break; - } - - /* In cases involving weak versioned symbols, we may wind up trying - to merge a symbol with itself. Catch that here, to avoid the - confusion that results if we try to override a symbol with - itself. The additional tests catch cases like - _GLOBAL_OFFSET_TABLE_, which are regular symbols defined in a - dynamic object, which we do want to handle here. */ - if (abfd == oldbfd - && ((abfd->flags & DYNAMIC) == 0 - || (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)) - return true; - - /* NEWDYN and OLDDYN indicate whether the new or old symbol, - respectively, is from a dynamic object. */ - - if ((abfd->flags & DYNAMIC) != 0) - newdyn = true; - else - newdyn = false; - - if (oldbfd != NULL) - olddyn = (oldbfd->flags & DYNAMIC) != 0; - else - { - asection *hsec; - - /* This code handles the special SHN_MIPS_{TEXT,DATA} section - indices used by MIPS ELF. */ - switch (h->root.type) - { - default: - hsec = NULL; - break; - - case bfd_link_hash_defined: - case bfd_link_hash_defweak: - hsec = h->root.u.def.section; - break; - - case bfd_link_hash_common: - hsec = h->root.u.c.p->section; - break; - } - - if (hsec == NULL) - olddyn = false; - else - olddyn = (hsec->symbol->flags & BSF_DYNAMIC) != 0; - } - - /* NEWDEF and OLDDEF indicate whether the new or old symbol, - respectively, appear to be a definition rather than reference. */ - - if (bfd_is_und_section (sec) || bfd_is_com_section (sec)) - newdef = false; - else - newdef = true; - - if (h->root.type == bfd_link_hash_undefined - || h->root.type == bfd_link_hash_undefweak - || h->root.type == bfd_link_hash_common) - olddef = false; - else - olddef = true; - - /* NEWDYNCOMMON and OLDDYNCOMMON indicate whether the new or old - symbol, respectively, appears to be a common symbol in a dynamic - object. If a symbol appears in an uninitialized section, and is - not weak, and is not a function, then it may be a common symbol - which was resolved when the dynamic object was created. We want - to treat such symbols specially, because they raise special - considerations when setting the symbol size: if the symbol - appears as a common symbol in a regular object, and the size in - the regular object is larger, we must make sure that we use the - larger size. This problematic case can always be avoided in C, - but it must be handled correctly when using Fortran shared - libraries. - - Note that if NEWDYNCOMMON is set, NEWDEF will be set, and - likewise for OLDDYNCOMMON and OLDDEF. - - Note that this test is just a heuristic, and that it is quite - possible to have an uninitialized symbol in a shared object which - is really a definition, rather than a common symbol. This could - lead to some minor confusion when the symbol really is a common - symbol in some regular object. However, I think it will be - harmless. */ - - if (newdyn - && newdef - && (sec->flags & SEC_ALLOC) != 0 - && (sec->flags & SEC_LOAD) == 0 - && sym->st_size > 0 - && bind != STB_WEAK - && ELF_ST_TYPE (sym->st_info) != STT_FUNC) - newdyncommon = true; - else - newdyncommon = false; - - if (olddyn - && olddef - && h->root.type == bfd_link_hash_defined - && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 - && (h->root.u.def.section->flags & SEC_ALLOC) != 0 - && (h->root.u.def.section->flags & SEC_LOAD) == 0 - && h->size > 0 - && h->type != STT_FUNC) - olddyncommon = true; - else - olddyncommon = false; - - /* It's OK to change the type if either the existing symbol or the - new symbol is weak unless it comes from a DT_NEEDED entry of - a shared object, in which case, the DT_NEEDED entry may not be - required at the run time. */ - - if ((! dt_needed && h->root.type == bfd_link_hash_defweak) - || h->root.type == bfd_link_hash_undefweak - || bind == STB_WEAK) - *type_change_ok = true; - - /* It's OK to change the size if either the existing symbol or the - new symbol is weak, or if the old symbol is undefined. */ - - if (*type_change_ok - || h->root.type == bfd_link_hash_undefined) - *size_change_ok = true; - - /* If both the old and the new symbols look like common symbols in a - dynamic object, set the size of the symbol to the larger of the - two. */ - - if (olddyncommon - && newdyncommon - && sym->st_size != h->size) - { - /* Since we think we have two common symbols, issue a multiple - common warning if desired. Note that we only warn if the - size is different. If the size is the same, we simply let - the old symbol override the new one as normally happens with - symbols defined in dynamic objects. */ - - if (! ((*info->callbacks->multiple_common) - (info, h->root.root.string, oldbfd, bfd_link_hash_common, - h->size, abfd, bfd_link_hash_common, sym->st_size))) - return false; - - if (sym->st_size > h->size) - h->size = sym->st_size; - - *size_change_ok = true; - } - - /* If we are looking at a dynamic object, and we have found a - definition, we need to see if the symbol was already defined by - some other object. If so, we want to use the existing - definition, and we do not want to report a multiple symbol - definition error; we do this by clobbering *PSEC to be - bfd_und_section_ptr. - - We treat a common symbol as a definition if the symbol in the - shared library is a function, since common symbols always - represent variables; this can cause confusion in principle, but - any such confusion would seem to indicate an erroneous program or - shared library. We also permit a common symbol in a regular - object to override a weak symbol in a shared object. - - We prefer a non-weak definition in a shared library to a weak - definition in the executable unless it comes from a DT_NEEDED - entry of a shared object, in which case, the DT_NEEDED entry - may not be required at the run time. */ - - if (newdyn - && newdef - && (olddef - || (h->root.type == bfd_link_hash_common - && (bind == STB_WEAK - || ELF_ST_TYPE (sym->st_info) == STT_FUNC))) - && (h->root.type != bfd_link_hash_defweak - || dt_needed - || bind == STB_WEAK)) - { - *override = true; - newdef = false; - newdyncommon = false; - - *psec = sec = bfd_und_section_ptr; - *size_change_ok = true; - - /* If we get here when the old symbol is a common symbol, then - we are explicitly letting it override a weak symbol or - function in a dynamic object, and we don't want to warn about - a type change. If the old symbol is a defined symbol, a type - change warning may still be appropriate. */ - - if (h->root.type == bfd_link_hash_common) - *type_change_ok = true; - } - - /* Handle the special case of an old common symbol merging with a - new symbol which looks like a common symbol in a shared object. - We change *PSEC and *PVALUE to make the new symbol look like a - common symbol, and let _bfd_generic_link_add_one_symbol will do - the right thing. */ - - if (newdyncommon - && h->root.type == bfd_link_hash_common) - { - *override = true; - newdef = false; - newdyncommon = false; - *pvalue = sym->st_size; - *psec = sec = bfd_com_section_ptr; - *size_change_ok = true; - } - - /* If the old symbol is from a dynamic object, and the new symbol is - a definition which is not from a dynamic object, then the new - symbol overrides the old symbol. Symbols from regular files - always take precedence over symbols from dynamic objects, even if - they are defined after the dynamic object in the link. - - As above, we again permit a common symbol in a regular object to - override a definition in a shared object if the shared object - symbol is a function or is weak. - - As above, we permit a non-weak definition in a shared object to - override a weak definition in a regular object. */ - - if (! newdyn - && (newdef - || (bfd_is_com_section (sec) - && (h->root.type == bfd_link_hash_defweak - || h->type == STT_FUNC))) - && olddyn - && olddef - && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 - && (bind != STB_WEAK - || h->root.type == bfd_link_hash_defweak)) - { - /* Change the hash table entry to undefined, and let - _bfd_generic_link_add_one_symbol do the right thing with the - new definition. */ - - h->root.type = bfd_link_hash_undefined; - h->root.u.undef.abfd = h->root.u.def.section->owner; - *size_change_ok = true; - - olddef = false; - olddyncommon = false; - - /* We again permit a type change when a common symbol may be - overriding a function. */ - - if (bfd_is_com_section (sec)) - *type_change_ok = true; - - /* This union may have been set to be non-NULL when this symbol - was seen in a dynamic object. We must force the union to be - NULL, so that it is correct for a regular symbol. */ - - h->verinfo.vertree = NULL; - - /* In this special case, if H is the target of an indirection, - we want the caller to frob with H rather than with the - indirect symbol. That will permit the caller to redefine the - target of the indirection, rather than the indirect symbol - itself. FIXME: This will break the -y option if we store a - symbol with a different name. */ - *sym_hash = h; - } - - /* Handle the special case of a new common symbol merging with an - old symbol that looks like it might be a common symbol defined in - a shared object. Note that we have already handled the case in - which a new common symbol should simply override the definition - in the shared library. */ - - if (! newdyn - && bfd_is_com_section (sec) - && olddyncommon) - { - /* It would be best if we could set the hash table entry to a - common symbol, but we don't know what to use for the section - or the alignment. */ - if (! ((*info->callbacks->multiple_common) - (info, h->root.root.string, oldbfd, bfd_link_hash_common, - h->size, abfd, bfd_link_hash_common, sym->st_size))) - return false; - - /* If the predumed common symbol in the dynamic object is - larger, pretend that the new symbol has its size. */ - - if (h->size > *pvalue) - *pvalue = h->size; - - /* FIXME: We no longer know the alignment required by the symbol - in the dynamic object, so we just wind up using the one from - the regular object. */ - - olddef = false; - olddyncommon = false; - - h->root.type = bfd_link_hash_undefined; - h->root.u.undef.abfd = h->root.u.def.section->owner; - - *size_change_ok = true; - *type_change_ok = true; - - h->verinfo.vertree = NULL; - } - - /* Handle the special case of a weak definition in a regular object - followed by a non-weak definition in a shared object. In this - case, we prefer the definition in the shared object unless it - comes from a DT_NEEDED entry of a shared object, in which case, - the DT_NEEDED entry may not be required at the run time. */ - if (olddef - && ! dt_needed - && h->root.type == bfd_link_hash_defweak - && newdef - && newdyn - && bind != STB_WEAK) - { - /* To make this work we have to frob the flags so that the rest - of the code does not think we are using the regular - definition. */ - if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0) - h->elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR; - else if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0) - h->elf_link_hash_flags |= ELF_LINK_HASH_REF_DYNAMIC; - h->elf_link_hash_flags &= ~ (ELF_LINK_HASH_DEF_REGULAR - | ELF_LINK_HASH_DEF_DYNAMIC); - - /* If H is the target of an indirection, we want the caller to - use H rather than the indirect symbol. Otherwise if we are - defining a new indirect symbol we will wind up attaching it - to the entry we are overriding. */ - *sym_hash = h; - } - - /* Handle the special case of a non-weak definition in a shared - object followed by a weak definition in a regular object. In - this case we prefer to definition in the shared object. To make - this work we have to tell the caller to not treat the new symbol - as a definition. */ - if (olddef - && olddyn - && h->root.type != bfd_link_hash_defweak - && newdef - && ! newdyn - && bind == STB_WEAK) - *override = true; - - return true; -} - -/* This function is called to create an indirect symbol from the - default for the symbol with the default version if needed. The - symbol is described by H, NAME, SYM, SEC, VALUE, and OVERRIDE. We - set DYNSYM if the new indirect symbol is dynamic. DT_NEEDED - indicates if it comes from a DT_NEEDED entry of a shared object. */ - -static boolean -elf_add_default_symbol (abfd, info, h, name, sym, sec, value, - dynsym, override, dt_needed) - bfd *abfd; - struct bfd_link_info *info; - struct elf_link_hash_entry *h; - const char *name; - Elf_Internal_Sym *sym; - asection **sec; - bfd_vma *value; - boolean *dynsym; - boolean override; - boolean dt_needed; -{ - boolean type_change_ok; - boolean size_change_ok; - char *shortname; - struct elf_link_hash_entry *hi; - struct elf_backend_data *bed; - boolean collect; - boolean dynamic; - char *p; - - /* If this symbol has a version, and it is the default version, we - create an indirect symbol from the default name to the fully - decorated name. This will cause external references which do not - specify a version to be bound to this version of the symbol. */ - p = strchr (name, ELF_VER_CHR); - if (p == NULL || p[1] != ELF_VER_CHR) - return true; - - if (override) - { - /* We are overridden by an old defition. We need to check if we - need to crreate the indirect symbol from the default name. */ - hi = elf_link_hash_lookup (elf_hash_table (info), name, true, - false, false); - BFD_ASSERT (hi != NULL); - if (hi == h) - return true; - while (hi->root.type == bfd_link_hash_indirect - || hi->root.type == bfd_link_hash_warning) - { - hi = (struct elf_link_hash_entry *) hi->root.u.i.link; - if (hi == h) - return true; - } - } - - bed = get_elf_backend_data (abfd); - collect = bed->collect; - dynamic = (abfd->flags & DYNAMIC) != 0; - - shortname = bfd_hash_allocate (&info->hash->table, - (size_t) (p - name + 1)); - if (shortname == NULL) - return false; - strncpy (shortname, name, (size_t) (p - name)); - shortname [p - name] = '\0'; - - /* We are going to create a new symbol. Merge it with any existing - symbol with this name. For the purposes of the merge, act as - though we were defining the symbol we just defined, although we - actually going to define an indirect symbol. */ - type_change_ok = false; - size_change_ok = false; - if (! elf_merge_symbol (abfd, info, shortname, sym, sec, value, - &hi, &override, &type_change_ok, - &size_change_ok, dt_needed)) - return false; - - if (! override) - { - if (! (_bfd_generic_link_add_one_symbol - (info, abfd, shortname, BSF_INDIRECT, bfd_ind_section_ptr, - (bfd_vma) 0, name, false, collect, - (struct bfd_link_hash_entry **) &hi))) - return false; - } - else - { - /* In this case the symbol named SHORTNAME is overriding the - indirect symbol we want to add. We were planning on making - SHORTNAME an indirect symbol referring to NAME. SHORTNAME - is the name without a version. NAME is the fully versioned - name, and it is the default version. - - Overriding means that we already saw a definition for the - symbol SHORTNAME in a regular object, and it is overriding - the symbol defined in the dynamic object. - - When this happens, we actually want to change NAME, the - symbol we just added, to refer to SHORTNAME. This will cause - references to NAME in the shared object to become references - to SHORTNAME in the regular object. This is what we expect - when we override a function in a shared object: that the - references in the shared object will be mapped to the - definition in the regular object. */ - - while (hi->root.type == bfd_link_hash_indirect - || hi->root.type == bfd_link_hash_warning) - hi = (struct elf_link_hash_entry *) hi->root.u.i.link; - - h->root.type = bfd_link_hash_indirect; - h->root.u.i.link = (struct bfd_link_hash_entry *) hi; - if (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) - { - h->elf_link_hash_flags &=~ ELF_LINK_HASH_DEF_DYNAMIC; - hi->elf_link_hash_flags |= ELF_LINK_HASH_REF_DYNAMIC; - if (hi->elf_link_hash_flags - & (ELF_LINK_HASH_REF_REGULAR - | ELF_LINK_HASH_DEF_REGULAR)) - { - if (! _bfd_elf_link_record_dynamic_symbol (info, hi)) - return false; - } - } - - /* Now set HI to H, so that the following code will set the - other fields correctly. */ - hi = h; - } - - /* If there is a duplicate definition somewhere, then HI may not - point to an indirect symbol. We will have reported an error to - the user in that case. */ - - if (hi->root.type == bfd_link_hash_indirect) - { - struct elf_link_hash_entry *ht; - - /* If the symbol became indirect, then we assume that we have - not seen a definition before. */ - BFD_ASSERT ((hi->elf_link_hash_flags - & (ELF_LINK_HASH_DEF_DYNAMIC - | ELF_LINK_HASH_DEF_REGULAR)) == 0); - - ht = (struct elf_link_hash_entry *) hi->root.u.i.link; - (*bed->elf_backend_copy_indirect_symbol) (ht, hi); - - /* See if the new flags lead us to realize that the symbol must - be dynamic. */ - if (! *dynsym) - { - if (! dynamic) - { - if (info->shared - || ((hi->elf_link_hash_flags - & ELF_LINK_HASH_REF_DYNAMIC) != 0)) - *dynsym = true; - } - else - { - if ((hi->elf_link_hash_flags - & ELF_LINK_HASH_REF_REGULAR) != 0) - *dynsym = true; - } - } - } - - /* We also need to define an indirection from the nondefault version - of the symbol. */ - - shortname = bfd_hash_allocate (&info->hash->table, strlen (name)); - if (shortname == NULL) - return false; - strncpy (shortname, name, (size_t) (p - name)); - strcpy (shortname + (p - name), p + 1); - - /* Once again, merge with any existing symbol. */ - type_change_ok = false; - size_change_ok = false; - if (! elf_merge_symbol (abfd, info, shortname, sym, sec, value, - &hi, &override, &type_change_ok, - &size_change_ok, dt_needed)) - return false; - - if (override) - { - /* Here SHORTNAME is a versioned name, so we don't expect to see - the type of override we do in the case above. */ - (*_bfd_error_handler) - (_("%s: warning: unexpected redefinition of `%s'"), - bfd_archive_filename (abfd), shortname); - } - else - { - if (! (_bfd_generic_link_add_one_symbol - (info, abfd, shortname, BSF_INDIRECT, - bfd_ind_section_ptr, (bfd_vma) 0, name, false, - collect, (struct bfd_link_hash_entry **) &hi))) - return false; - - /* If there is a duplicate definition somewhere, then HI may not - point to an indirect symbol. We will have reported an error - to the user in that case. */ - - if (hi->root.type == bfd_link_hash_indirect) - { - /* If the symbol became indirect, then we assume that we have - not seen a definition before. */ - BFD_ASSERT ((hi->elf_link_hash_flags - & (ELF_LINK_HASH_DEF_DYNAMIC - | ELF_LINK_HASH_DEF_REGULAR)) == 0); - - (*bed->elf_backend_copy_indirect_symbol) (h, hi); - - /* See if the new flags lead us to realize that the symbol - must be dynamic. */ - if (! *dynsym) - { - if (! dynamic) - { - if (info->shared - || ((hi->elf_link_hash_flags - & ELF_LINK_HASH_REF_DYNAMIC) != 0)) - *dynsym = true; - } - else - { - if ((hi->elf_link_hash_flags - & ELF_LINK_HASH_REF_REGULAR) != 0) - *dynsym = true; - } - } - } - } - - return true; -} - -/* Add symbols from an ELF object file to the linker hash table. */ - -static boolean -elf_link_add_object_symbols (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - boolean (*add_symbol_hook) PARAMS ((bfd *, struct bfd_link_info *, - const Elf_Internal_Sym *, - const char **, flagword *, - asection **, bfd_vma *)); - boolean (*check_relocs) PARAMS ((bfd *, struct bfd_link_info *, - asection *, const Elf_Internal_Rela *)); - boolean collect; - Elf_Internal_Shdr *hdr; - Elf_Internal_Shdr *shndx_hdr; - bfd_size_type symcount; - bfd_size_type extsymcount; - bfd_size_type extsymoff; - Elf_External_Sym *buf = NULL; - Elf_External_Sym_Shndx *shndx_buf = NULL; - Elf_External_Sym_Shndx *shndx; - struct elf_link_hash_entry **sym_hash; - boolean dynamic; - Elf_External_Versym *extversym = NULL; - Elf_External_Versym *ever; - Elf_External_Dyn *dynbuf = NULL; - struct elf_link_hash_entry *weaks; - Elf_External_Sym *esym; - Elf_External_Sym *esymend; - struct elf_backend_data *bed; - boolean dt_needed; - struct elf_link_hash_table * hash_table; - file_ptr pos; - bfd_size_type amt; - - hash_table = elf_hash_table (info); - - bed = get_elf_backend_data (abfd); - add_symbol_hook = bed->elf_add_symbol_hook; - collect = bed->collect; - - if ((abfd->flags & DYNAMIC) == 0) - dynamic = false; - else - { - dynamic = true; - - /* You can't use -r against a dynamic object. Also, there's no - hope of using a dynamic object which does not exactly match - the format of the output file. */ - if (info->relocateable || info->hash->creator != abfd->xvec) - { - bfd_set_error (bfd_error_invalid_operation); - goto error_return; - } - } - - /* As a GNU extension, any input sections which are named - .gnu.warning.SYMBOL are treated as warning symbols for the given - symbol. This differs from .gnu.warning sections, which generate - warnings when they are included in an output file. */ - if (! info->shared) - { - asection *s; - - for (s = abfd->sections; s != NULL; s = s->next) - { - const char *name; - - name = bfd_get_section_name (abfd, s); - if (strncmp (name, ".gnu.warning.", sizeof ".gnu.warning." - 1) == 0) - { - char *msg; - bfd_size_type sz; - - name += sizeof ".gnu.warning." - 1; - - /* If this is a shared object, then look up the symbol - in the hash table. If it is there, and it is already - been defined, then we will not be using the entry - from this shared object, so we don't need to warn. - FIXME: If we see the definition in a regular object - later on, we will warn, but we shouldn't. The only - fix is to keep track of what warnings we are supposed - to emit, and then handle them all at the end of the - link. */ - if (dynamic && abfd->xvec == info->hash->creator) - { - struct elf_link_hash_entry *h; - - h = elf_link_hash_lookup (hash_table, name, - false, false, true); - - /* FIXME: What about bfd_link_hash_common? */ - if (h != NULL - && (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak)) - { - /* We don't want to issue this warning. Clobber - the section size so that the warning does not - get copied into the output file. */ - s->_raw_size = 0; - continue; - } - } - - sz = bfd_section_size (abfd, s); - msg = (char *) bfd_alloc (abfd, sz + 1); - if (msg == NULL) - goto error_return; - - if (! bfd_get_section_contents (abfd, s, msg, (file_ptr) 0, sz)) - goto error_return; - - msg[sz] = '\0'; - - if (! (_bfd_generic_link_add_one_symbol - (info, abfd, name, BSF_WARNING, s, (bfd_vma) 0, msg, - false, collect, (struct bfd_link_hash_entry **) NULL))) - goto error_return; - - if (! info->relocateable) - { - /* Clobber the section size so that the warning does - not get copied into the output file. */ - s->_raw_size = 0; - } - } - } - } - - /* If this is a dynamic object, we always link against the .dynsym - symbol table, not the .symtab symbol table. The dynamic linker - will only see the .dynsym symbol table, so there is no reason to - look at .symtab for a dynamic object. */ - - if (! dynamic || elf_dynsymtab (abfd) == 0) - { - hdr = &elf_tdata (abfd)->symtab_hdr; - shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; - } - else - { - hdr = &elf_tdata (abfd)->dynsymtab_hdr; - shndx_hdr = NULL; - } - - if (dynamic) - { - /* Read in any version definitions. */ - - if (! _bfd_elf_slurp_version_tables (abfd)) - goto error_return; - - /* Read in the symbol versions, but don't bother to convert them - to internal format. */ - if (elf_dynversym (abfd) != 0) - { - Elf_Internal_Shdr *versymhdr; - - versymhdr = &elf_tdata (abfd)->dynversym_hdr; - extversym = (Elf_External_Versym *) bfd_malloc (versymhdr->sh_size); - if (extversym == NULL) - goto error_return; - amt = versymhdr->sh_size; - if (bfd_seek (abfd, versymhdr->sh_offset, SEEK_SET) != 0 - || bfd_bread ((PTR) extversym, amt, abfd) != amt) - goto error_return; - } - } - - symcount = hdr->sh_size / sizeof (Elf_External_Sym); - - /* The sh_info field of the symtab header tells us where the - external symbols start. We don't care about the local symbols at - this point. */ - if (elf_bad_symtab (abfd)) - { - extsymcount = symcount; - extsymoff = 0; - } - else - { - extsymcount = symcount - hdr->sh_info; - extsymoff = hdr->sh_info; - } - - amt = extsymcount * sizeof (Elf_External_Sym); - buf = (Elf_External_Sym *) bfd_malloc (amt); - if (buf == NULL && extsymcount != 0) - goto error_return; - - if (shndx_hdr != NULL && shndx_hdr->sh_size != 0) - { - amt = extsymcount * sizeof (Elf_External_Sym_Shndx); - shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (amt); - if (shndx_buf == NULL && extsymcount != 0) - goto error_return; - } - - /* We store a pointer to the hash table entry for each external - symbol. */ - amt = extsymcount * sizeof (struct elf_link_hash_entry *); - sym_hash = (struct elf_link_hash_entry **) bfd_alloc (abfd, amt); - if (sym_hash == NULL) - goto error_return; - elf_sym_hashes (abfd) = sym_hash; - - dt_needed = false; - - if (! dynamic) - { - /* If we are creating a shared library, create all the dynamic - sections immediately. We need to attach them to something, - so we attach them to this BFD, provided it is the right - format. FIXME: If there are no input BFD's of the same - format as the output, we can't make a shared library. */ - if (info->shared - && is_elf_hash_table (info) - && ! hash_table->dynamic_sections_created - && abfd->xvec == info->hash->creator) - { - if (! elf_link_create_dynamic_sections (abfd, info)) - goto error_return; - } - } - else if (! is_elf_hash_table (info)) - goto error_return; - else - { - asection *s; - boolean add_needed; - const char *name; - bfd_size_type oldsize; - bfd_size_type strindex; - - /* Find the name to use in a DT_NEEDED entry that refers to this - object. If the object has a DT_SONAME entry, we use it. - Otherwise, if the generic linker stuck something in - elf_dt_name, we use that. Otherwise, we just use the file - name. If the generic linker put a null string into - elf_dt_name, we don't make a DT_NEEDED entry at all, even if - there is a DT_SONAME entry. */ - add_needed = true; - name = bfd_get_filename (abfd); - if (elf_dt_name (abfd) != NULL) - { - name = elf_dt_name (abfd); - if (*name == '\0') - { - if (elf_dt_soname (abfd) != NULL) - dt_needed = true; - - add_needed = false; - } - } - s = bfd_get_section_by_name (abfd, ".dynamic"); - if (s != NULL) - { - Elf_External_Dyn *extdyn; - Elf_External_Dyn *extdynend; - int elfsec; - unsigned long shlink; - int rpath; - int runpath; - - dynbuf = (Elf_External_Dyn *) bfd_malloc (s->_raw_size); - if (dynbuf == NULL) - goto error_return; - - if (! bfd_get_section_contents (abfd, s, (PTR) dynbuf, - (file_ptr) 0, s->_raw_size)) - goto error_return; - - elfsec = _bfd_elf_section_from_bfd_section (abfd, s); - if (elfsec == -1) - goto error_return; - shlink = elf_elfsections (abfd)[elfsec]->sh_link; - - { - /* The shared libraries distributed with hpux11 have a bogus - sh_link field for the ".dynamic" section. This code detects - when SHLINK refers to a section that is not a string table - and tries to find the string table for the ".dynsym" section - instead. */ - Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[shlink]; - if (shdr->sh_type != SHT_STRTAB) - { - asection *ds = bfd_get_section_by_name (abfd, ".dynsym"); - int elfdsec = _bfd_elf_section_from_bfd_section (abfd, ds); - if (elfdsec == -1) - goto error_return; - shlink = elf_elfsections (abfd)[elfdsec]->sh_link; - } - } - - extdyn = dynbuf; - extdynend = extdyn + s->_raw_size / sizeof (Elf_External_Dyn); - rpath = 0; - runpath = 0; - for (; extdyn < extdynend; extdyn++) - { - Elf_Internal_Dyn dyn; - - elf_swap_dyn_in (abfd, extdyn, &dyn); - if (dyn.d_tag == DT_SONAME) - { - unsigned int tagv = dyn.d_un.d_val; - name = bfd_elf_string_from_elf_section (abfd, shlink, tagv); - if (name == NULL) - goto error_return; - } - if (dyn.d_tag == DT_NEEDED) - { - struct bfd_link_needed_list *n, **pn; - char *fnm, *anm; - unsigned int tagv = dyn.d_un.d_val; - - amt = sizeof (struct bfd_link_needed_list); - n = (struct bfd_link_needed_list *) bfd_alloc (abfd, amt); - fnm = bfd_elf_string_from_elf_section (abfd, shlink, tagv); - if (n == NULL || fnm == NULL) - goto error_return; - anm = bfd_alloc (abfd, (bfd_size_type) strlen (fnm) + 1); - if (anm == NULL) - goto error_return; - strcpy (anm, fnm); - n->name = anm; - n->by = abfd; - n->next = NULL; - for (pn = & hash_table->needed; - *pn != NULL; - pn = &(*pn)->next) - ; - *pn = n; - } - if (dyn.d_tag == DT_RUNPATH) - { - struct bfd_link_needed_list *n, **pn; - char *fnm, *anm; - unsigned int tagv = dyn.d_un.d_val; - - /* When we see DT_RPATH before DT_RUNPATH, we have - to clear runpath. Do _NOT_ bfd_release, as that - frees all more recently bfd_alloc'd blocks as - well. */ - if (rpath && hash_table->runpath) - hash_table->runpath = NULL; - - amt = sizeof (struct bfd_link_needed_list); - n = (struct bfd_link_needed_list *) bfd_alloc (abfd, amt); - fnm = bfd_elf_string_from_elf_section (abfd, shlink, tagv); - if (n == NULL || fnm == NULL) - goto error_return; - anm = bfd_alloc (abfd, (bfd_size_type) strlen (fnm) + 1); - if (anm == NULL) - goto error_return; - strcpy (anm, fnm); - n->name = anm; - n->by = abfd; - n->next = NULL; - for (pn = & hash_table->runpath; - *pn != NULL; - pn = &(*pn)->next) - ; - *pn = n; - runpath = 1; - rpath = 0; - } - /* Ignore DT_RPATH if we have seen DT_RUNPATH. */ - if (!runpath && dyn.d_tag == DT_RPATH) - { - struct bfd_link_needed_list *n, **pn; - char *fnm, *anm; - unsigned int tagv = dyn.d_un.d_val; - - amt = sizeof (struct bfd_link_needed_list); - n = (struct bfd_link_needed_list *) bfd_alloc (abfd, amt); - fnm = bfd_elf_string_from_elf_section (abfd, shlink, tagv); - if (n == NULL || fnm == NULL) - goto error_return; - anm = bfd_alloc (abfd, (bfd_size_type) strlen (fnm) + 1); - if (anm == NULL) - goto error_return; - strcpy (anm, fnm); - n->name = anm; - n->by = abfd; - n->next = NULL; - for (pn = & hash_table->runpath; - *pn != NULL; - pn = &(*pn)->next) - ; - *pn = n; - rpath = 1; - } - } - - free (dynbuf); - dynbuf = NULL; - } - - /* We do not want to include any of the sections in a dynamic - object in the output file. We hack by simply clobbering the - list of sections in the BFD. This could be handled more - cleanly by, say, a new section flag; the existing - SEC_NEVER_LOAD flag is not the one we want, because that one - still implies that the section takes up space in the output - file. */ - bfd_section_list_clear (abfd); - - /* If this is the first dynamic object found in the link, create - the special sections required for dynamic linking. */ - if (! hash_table->dynamic_sections_created) - if (! elf_link_create_dynamic_sections (abfd, info)) - goto error_return; - - if (add_needed) - { - /* Add a DT_NEEDED entry for this dynamic object. */ - oldsize = _bfd_elf_strtab_size (hash_table->dynstr); - strindex = _bfd_elf_strtab_add (hash_table->dynstr, name, false); - if (strindex == (bfd_size_type) -1) - goto error_return; - - if (oldsize == _bfd_elf_strtab_size (hash_table->dynstr)) - { - asection *sdyn; - Elf_External_Dyn *dyncon, *dynconend; - - /* The hash table size did not change, which means that - the dynamic object name was already entered. If we - have already included this dynamic object in the - link, just ignore it. There is no reason to include - a particular dynamic object more than once. */ - sdyn = bfd_get_section_by_name (hash_table->dynobj, ".dynamic"); - BFD_ASSERT (sdyn != NULL); - - dyncon = (Elf_External_Dyn *) sdyn->contents; - dynconend = (Elf_External_Dyn *) (sdyn->contents + - sdyn->_raw_size); - for (; dyncon < dynconend; dyncon++) - { - Elf_Internal_Dyn dyn; - - elf_swap_dyn_in (hash_table->dynobj, dyncon, & dyn); - if (dyn.d_tag == DT_NEEDED - && dyn.d_un.d_val == strindex) - { - if (buf != NULL) - free (buf); - if (extversym != NULL) - free (extversym); - _bfd_elf_strtab_delref (hash_table->dynstr, strindex); - return true; - } - } - } - - if (! elf_add_dynamic_entry (info, (bfd_vma) DT_NEEDED, strindex)) - goto error_return; - } - - /* Save the SONAME, if there is one, because sometimes the - linker emulation code will need to know it. */ - if (*name == '\0') - name = basename (bfd_get_filename (abfd)); - elf_dt_name (abfd) = name; - } - - pos = hdr->sh_offset + extsymoff * sizeof (Elf_External_Sym); - amt = extsymcount * sizeof (Elf_External_Sym); - if (bfd_seek (abfd, pos, SEEK_SET) != 0 - || bfd_bread ((PTR) buf, amt, abfd) != amt) - goto error_return; - - if (shndx_hdr != NULL && shndx_hdr->sh_size != 0) - { - amt = extsymcount * sizeof (Elf_External_Sym_Shndx); - pos = shndx_hdr->sh_offset + extsymoff * sizeof (Elf_External_Sym_Shndx); - if (bfd_seek (abfd, pos, SEEK_SET) != 0 - || bfd_bread ((PTR) shndx_buf, amt, abfd) != amt) - goto error_return; - } - - weaks = NULL; - - ever = extversym != NULL ? extversym + extsymoff : NULL; - esymend = buf + extsymcount; - for (esym = buf, shndx = shndx_buf; - esym < esymend; - esym++, sym_hash++, ever = (ever != NULL ? ever + 1 : NULL), - shndx = (shndx != NULL ? shndx + 1 : NULL)) - { - Elf_Internal_Sym sym; - int bind; - bfd_vma value; - asection *sec; - flagword flags; - const char *name; - struct elf_link_hash_entry *h; - boolean definition; - boolean size_change_ok, type_change_ok; - boolean new_weakdef; - unsigned int old_alignment; - boolean override; - - override = false; - - elf_swap_symbol_in (abfd, esym, shndx, &sym); - - flags = BSF_NO_FLAGS; - sec = NULL; - value = sym.st_value; - *sym_hash = NULL; - - bind = ELF_ST_BIND (sym.st_info); - if (bind == STB_LOCAL) - { - /* This should be impossible, since ELF requires that all - global symbols follow all local symbols, and that sh_info - point to the first global symbol. Unfortunatealy, Irix 5 - screws this up. */ - continue; - } - else if (bind == STB_GLOBAL) - { - if (sym.st_shndx != SHN_UNDEF - && sym.st_shndx != SHN_COMMON) - flags = BSF_GLOBAL; - } - else if (bind == STB_WEAK) - flags = BSF_WEAK; - else - { - /* Leave it up to the processor backend. */ - } - - if (sym.st_shndx == SHN_UNDEF) - sec = bfd_und_section_ptr; - else if (sym.st_shndx < SHN_LORESERVE || sym.st_shndx > SHN_HIRESERVE) - { - sec = section_from_elf_index (abfd, sym.st_shndx); - if (sec == NULL) - sec = bfd_abs_section_ptr; - else if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) - value -= sec->vma; - } - else if (sym.st_shndx == SHN_ABS) - sec = bfd_abs_section_ptr; - else if (sym.st_shndx == SHN_COMMON) - { - sec = bfd_com_section_ptr; - /* What ELF calls the size we call the value. What ELF - calls the value we call the alignment. */ - value = sym.st_size; - } - else - { - /* Leave it up to the processor backend. */ - } - - name = bfd_elf_string_from_elf_section (abfd, hdr->sh_link, sym.st_name); - if (name == (const char *) NULL) - goto error_return; - - if (add_symbol_hook) - { - if (! (*add_symbol_hook) (abfd, info, &sym, &name, &flags, &sec, - &value)) - goto error_return; - - /* The hook function sets the name to NULL if this symbol - should be skipped for some reason. */ - if (name == (const char *) NULL) - continue; - } - - /* Sanity check that all possibilities were handled. */ - if (sec == (asection *) NULL) - { - bfd_set_error (bfd_error_bad_value); - goto error_return; - } - - if (bfd_is_und_section (sec) - || bfd_is_com_section (sec)) - definition = false; - else - definition = true; - - size_change_ok = false; - type_change_ok = get_elf_backend_data (abfd)->type_change_ok; - old_alignment = 0; - if (info->hash->creator->flavour == bfd_target_elf_flavour) - { - Elf_Internal_Versym iver; - unsigned int vernum = 0; - - if (ever != NULL) - { - _bfd_elf_swap_versym_in (abfd, ever, &iver); - vernum = iver.vs_vers & VERSYM_VERSION; - - /* If this is a hidden symbol, or if it is not version - 1, we append the version name to the symbol name. - However, we do not modify a non-hidden absolute - symbol, because it might be the version symbol - itself. FIXME: What if it isn't? */ - if ((iver.vs_vers & VERSYM_HIDDEN) != 0 - || (vernum > 1 && ! bfd_is_abs_section (sec))) - { - const char *verstr; - unsigned int namelen; - bfd_size_type newlen; - char *newname, *p; - - if (sym.st_shndx != SHN_UNDEF) - { - if (vernum > elf_tdata (abfd)->dynverdef_hdr.sh_info) - { - (*_bfd_error_handler) - (_("%s: %s: invalid version %u (max %d)"), - bfd_archive_filename (abfd), name, vernum, - elf_tdata (abfd)->dynverdef_hdr.sh_info); - bfd_set_error (bfd_error_bad_value); - goto error_return; - } - else if (vernum > 1) - verstr = - elf_tdata (abfd)->verdef[vernum - 1].vd_nodename; - else - verstr = ""; - } - else - { - /* We cannot simply test for the number of - entries in the VERNEED section since the - numbers for the needed versions do not start - at 0. */ - Elf_Internal_Verneed *t; - - verstr = NULL; - for (t = elf_tdata (abfd)->verref; - t != NULL; - t = t->vn_nextref) - { - Elf_Internal_Vernaux *a; - - for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) - { - if (a->vna_other == vernum) - { - verstr = a->vna_nodename; - break; - } - } - if (a != NULL) - break; - } - if (verstr == NULL) - { - (*_bfd_error_handler) - (_("%s: %s: invalid needed version %d"), - bfd_archive_filename (abfd), name, vernum); - bfd_set_error (bfd_error_bad_value); - goto error_return; - } - } - - namelen = strlen (name); - newlen = namelen + strlen (verstr) + 2; - if ((iver.vs_vers & VERSYM_HIDDEN) == 0) - ++newlen; - - newname = (char *) bfd_alloc (abfd, newlen); - if (newname == NULL) - goto error_return; - strcpy (newname, name); - p = newname + namelen; - *p++ = ELF_VER_CHR; - /* If this is a defined non-hidden version symbol, - we add another @ to the name. This indicates the - default version of the symbol. */ - if ((iver.vs_vers & VERSYM_HIDDEN) == 0 - && sym.st_shndx != SHN_UNDEF) - *p++ = ELF_VER_CHR; - strcpy (p, verstr); - - name = newname; - } - } - - if (! elf_merge_symbol (abfd, info, name, &sym, &sec, &value, - sym_hash, &override, &type_change_ok, - &size_change_ok, dt_needed)) - goto error_return; - - if (override) - definition = false; - - h = *sym_hash; - while (h->root.type == bfd_link_hash_indirect - || h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - - /* Remember the old alignment if this is a common symbol, so - that we don't reduce the alignment later on. We can't - check later, because _bfd_generic_link_add_one_symbol - will set a default for the alignment which we want to - override. */ - if (h->root.type == bfd_link_hash_common) - old_alignment = h->root.u.c.p->alignment_power; - - if (elf_tdata (abfd)->verdef != NULL - && ! override - && vernum > 1 - && definition) - h->verinfo.verdef = &elf_tdata (abfd)->verdef[vernum - 1]; - } - - if (! (_bfd_generic_link_add_one_symbol - (info, abfd, name, flags, sec, value, (const char *) NULL, - false, collect, (struct bfd_link_hash_entry **) sym_hash))) - goto error_return; - - h = *sym_hash; - while (h->root.type == bfd_link_hash_indirect - || h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - *sym_hash = h; - - new_weakdef = false; - if (dynamic - && definition - && (flags & BSF_WEAK) != 0 - && ELF_ST_TYPE (sym.st_info) != STT_FUNC - && info->hash->creator->flavour == bfd_target_elf_flavour - && h->weakdef == NULL) - { - /* Keep a list of all weak defined non function symbols from - a dynamic object, using the weakdef field. Later in this - function we will set the weakdef field to the correct - value. We only put non-function symbols from dynamic - objects on this list, because that happens to be the only - time we need to know the normal symbol corresponding to a - weak symbol, and the information is time consuming to - figure out. If the weakdef field is not already NULL, - then this symbol was already defined by some previous - dynamic object, and we will be using that previous - definition anyhow. */ - - h->weakdef = weaks; - weaks = h; - new_weakdef = true; - } - - /* Set the alignment of a common symbol. */ - if (sym.st_shndx == SHN_COMMON - && h->root.type == bfd_link_hash_common) - { - unsigned int align; - - align = bfd_log2 (sym.st_value); - if (align > old_alignment - /* Permit an alignment power of zero if an alignment of one - is specified and no other alignments have been specified. */ - || (sym.st_value == 1 && old_alignment == 0)) - h->root.u.c.p->alignment_power = align; - } - - if (info->hash->creator->flavour == bfd_target_elf_flavour) - { - int old_flags; - boolean dynsym; - int new_flag; - - /* Remember the symbol size and type. */ - if (sym.st_size != 0 - && (definition || h->size == 0)) - { - if (h->size != 0 && h->size != sym.st_size && ! size_change_ok) - (*_bfd_error_handler) - (_("Warning: size of symbol `%s' changed from %lu to %lu in %s"), - name, (unsigned long) h->size, (unsigned long) sym.st_size, - bfd_archive_filename (abfd)); - - h->size = sym.st_size; - } - - /* If this is a common symbol, then we always want H->SIZE - to be the size of the common symbol. The code just above - won't fix the size if a common symbol becomes larger. We - don't warn about a size change here, because that is - covered by --warn-common. */ - if (h->root.type == bfd_link_hash_common) - h->size = h->root.u.c.size; - - if (ELF_ST_TYPE (sym.st_info) != STT_NOTYPE - && (definition || h->type == STT_NOTYPE)) - { - if (h->type != STT_NOTYPE - && h->type != ELF_ST_TYPE (sym.st_info) - && ! type_change_ok) - (*_bfd_error_handler) - (_("Warning: type of symbol `%s' changed from %d to %d in %s"), - name, h->type, ELF_ST_TYPE (sym.st_info), - bfd_archive_filename (abfd)); - - h->type = ELF_ST_TYPE (sym.st_info); - } - - /* If st_other has a processor-specific meaning, specific code - might be needed here. */ - if (sym.st_other != 0) - { - /* Combine visibilities, using the most constraining one. */ - unsigned char hvis = ELF_ST_VISIBILITY (h->other); - unsigned char symvis = ELF_ST_VISIBILITY (sym.st_other); - - if (symvis && (hvis > symvis || hvis == 0)) - h->other = sym.st_other; - - /* If neither has visibility, use the st_other of the - definition. This is an arbitrary choice, since the - other bits have no general meaning. */ - if (!symvis && !hvis - && (definition || h->other == 0)) - h->other = sym.st_other; - } - - /* Set a flag in the hash table entry indicating the type of - reference or definition we just found. Keep a count of - the number of dynamic symbols we find. A dynamic symbol - is one which is referenced or defined by both a regular - object and a shared object. */ - old_flags = h->elf_link_hash_flags; - dynsym = false; - if (! dynamic) - { - if (! definition) - { - new_flag = ELF_LINK_HASH_REF_REGULAR; - if (bind != STB_WEAK) - new_flag |= ELF_LINK_HASH_REF_REGULAR_NONWEAK; - } - else - new_flag = ELF_LINK_HASH_DEF_REGULAR; - if (info->shared - || (old_flags & (ELF_LINK_HASH_DEF_DYNAMIC - | ELF_LINK_HASH_REF_DYNAMIC)) != 0) - dynsym = true; - } - else - { - if (! definition) - new_flag = ELF_LINK_HASH_REF_DYNAMIC; - else - new_flag = ELF_LINK_HASH_DEF_DYNAMIC; - if ((old_flags & (ELF_LINK_HASH_DEF_REGULAR - | ELF_LINK_HASH_REF_REGULAR)) != 0 - || (h->weakdef != NULL - && ! new_weakdef - && h->weakdef->dynindx != -1)) - dynsym = true; - } - - h->elf_link_hash_flags |= new_flag; - - /* Check to see if we need to add an indirect symbol for - the default name. */ - if (definition || h->root.type == bfd_link_hash_common) - if (! elf_add_default_symbol (abfd, info, h, name, &sym, - &sec, &value, &dynsym, - override, dt_needed)) - goto error_return; - - if (dynsym && h->dynindx == -1) - { - if (! _bfd_elf_link_record_dynamic_symbol (info, h)) - goto error_return; - if (h->weakdef != NULL - && ! new_weakdef - && h->weakdef->dynindx == -1) - { - if (! _bfd_elf_link_record_dynamic_symbol (info, h->weakdef)) - goto error_return; - } - } - else if (dynsym && h->dynindx != -1) - /* If the symbol already has a dynamic index, but - visibility says it should not be visible, turn it into - a local symbol. */ - switch (ELF_ST_VISIBILITY (h->other)) - { - case STV_INTERNAL: - case STV_HIDDEN: - (*bed->elf_backend_hide_symbol) (info, h, true); - break; - } - - if (dt_needed && definition - && (h->elf_link_hash_flags - & ELF_LINK_HASH_REF_REGULAR) != 0) - { - bfd_size_type oldsize; - bfd_size_type strindex; - - if (! is_elf_hash_table (info)) - goto error_return; - - /* The symbol from a DT_NEEDED object is referenced from - the regular object to create a dynamic executable. We - have to make sure there is a DT_NEEDED entry for it. */ - - dt_needed = false; - oldsize = _bfd_elf_strtab_size (hash_table->dynstr); - strindex = _bfd_elf_strtab_add (hash_table->dynstr, - elf_dt_soname (abfd), false); - if (strindex == (bfd_size_type) -1) - goto error_return; - - if (oldsize == _bfd_elf_strtab_size (hash_table->dynstr)) - { - asection *sdyn; - Elf_External_Dyn *dyncon, *dynconend; - - sdyn = bfd_get_section_by_name (hash_table->dynobj, - ".dynamic"); - BFD_ASSERT (sdyn != NULL); - - dyncon = (Elf_External_Dyn *) sdyn->contents; - dynconend = (Elf_External_Dyn *) (sdyn->contents + - sdyn->_raw_size); - for (; dyncon < dynconend; dyncon++) - { - Elf_Internal_Dyn dyn; - - elf_swap_dyn_in (hash_table->dynobj, - dyncon, &dyn); - BFD_ASSERT (dyn.d_tag != DT_NEEDED || - dyn.d_un.d_val != strindex); - } - } - - if (! elf_add_dynamic_entry (info, (bfd_vma) DT_NEEDED, strindex)) - goto error_return; - } - } - } - - /* Now set the weakdefs field correctly for all the weak defined - symbols we found. The only way to do this is to search all the - symbols. Since we only need the information for non functions in - dynamic objects, that's the only time we actually put anything on - the list WEAKS. We need this information so that if a regular - object refers to a symbol defined weakly in a dynamic object, the - real symbol in the dynamic object is also put in the dynamic - symbols; we also must arrange for both symbols to point to the - same memory location. We could handle the general case of symbol - aliasing, but a general symbol alias can only be generated in - assembler code, handling it correctly would be very time - consuming, and other ELF linkers don't handle general aliasing - either. */ - while (weaks != NULL) - { - struct elf_link_hash_entry *hlook; - asection *slook; - bfd_vma vlook; - struct elf_link_hash_entry **hpp; - struct elf_link_hash_entry **hppend; - - hlook = weaks; - weaks = hlook->weakdef; - hlook->weakdef = NULL; - - BFD_ASSERT (hlook->root.type == bfd_link_hash_defined - || hlook->root.type == bfd_link_hash_defweak - || hlook->root.type == bfd_link_hash_common - || hlook->root.type == bfd_link_hash_indirect); - slook = hlook->root.u.def.section; - vlook = hlook->root.u.def.value; - - hpp = elf_sym_hashes (abfd); - hppend = hpp + extsymcount; - for (; hpp < hppend; hpp++) - { - struct elf_link_hash_entry *h; - - h = *hpp; - if (h != NULL && h != hlook - && h->root.type == bfd_link_hash_defined - && h->root.u.def.section == slook - && h->root.u.def.value == vlook) - { - hlook->weakdef = h; - - /* If the weak definition is in the list of dynamic - symbols, make sure the real definition is put there - as well. */ - if (hlook->dynindx != -1 - && h->dynindx == -1) - { - if (! _bfd_elf_link_record_dynamic_symbol (info, h)) - goto error_return; - } - - /* If the real definition is in the list of dynamic - symbols, make sure the weak definition is put there - as well. If we don't do this, then the dynamic - loader might not merge the entries for the real - definition and the weak definition. */ - if (h->dynindx != -1 - && hlook->dynindx == -1) - { - if (! _bfd_elf_link_record_dynamic_symbol (info, hlook)) - goto error_return; - } - - break; - } - } - } - - if (buf != NULL) - { - free (buf); - buf = NULL; - } - - if (extversym != NULL) - { - free (extversym); - extversym = NULL; - } - - /* If this object is the same format as the output object, and it is - not a shared library, then let the backend look through the - relocs. - - This is required to build global offset table entries and to - arrange for dynamic relocs. It is not required for the - particular common case of linking non PIC code, even when linking - against shared libraries, but unfortunately there is no way of - knowing whether an object file has been compiled PIC or not. - Looking through the relocs is not particularly time consuming. - The problem is that we must either (1) keep the relocs in memory, - which causes the linker to require additional runtime memory or - (2) read the relocs twice from the input file, which wastes time. - This would be a good case for using mmap. - - I have no idea how to handle linking PIC code into a file of a - different format. It probably can't be done. */ - check_relocs = get_elf_backend_data (abfd)->check_relocs; - if (! dynamic - && abfd->xvec == info->hash->creator - && check_relocs != NULL) - { - asection *o; - - for (o = abfd->sections; o != NULL; o = o->next) - { - Elf_Internal_Rela *internal_relocs; - boolean ok; - - if ((o->flags & SEC_RELOC) == 0 - || o->reloc_count == 0 - || ((info->strip == strip_all || info->strip == strip_debugger) - && (o->flags & SEC_DEBUGGING) != 0) - || bfd_is_abs_section (o->output_section)) - continue; - - internal_relocs = (NAME(_bfd_elf,link_read_relocs) - (abfd, o, (PTR) NULL, - (Elf_Internal_Rela *) NULL, - info->keep_memory)); - if (internal_relocs == NULL) - goto error_return; - - ok = (*check_relocs) (abfd, info, o, internal_relocs); - - if (! info->keep_memory) - free (internal_relocs); - - if (! ok) - goto error_return; - } - } - - /* If this is a non-traditional, non-relocateable link, try to - optimize the handling of the .stab/.stabstr sections. */ - if (! dynamic - && ! info->relocateable - && ! info->traditional_format - && info->hash->creator->flavour == bfd_target_elf_flavour - && is_elf_hash_table (info) - && (info->strip != strip_all && info->strip != strip_debugger)) - { - asection *stab, *stabstr; - - stab = bfd_get_section_by_name (abfd, ".stab"); - if (stab != NULL && !(stab->flags & SEC_MERGE)) - { - stabstr = bfd_get_section_by_name (abfd, ".stabstr"); - - if (stabstr != NULL) - { - struct bfd_elf_section_data *secdata; - - secdata = elf_section_data (stab); - if (! _bfd_link_section_stabs (abfd, - & hash_table->stab_info, - stab, stabstr, - &secdata->sec_info)) - goto error_return; - if (secdata->sec_info) - secdata->sec_info_type = ELF_INFO_TYPE_STABS; - } - } - } - - if (! info->relocateable && ! dynamic - && is_elf_hash_table (info)) - { - asection *s; - - for (s = abfd->sections; s != NULL; s = s->next) - if (s->flags & SEC_MERGE) - { - struct bfd_elf_section_data *secdata; - - secdata = elf_section_data (s); - if (! _bfd_merge_section (abfd, - & hash_table->merge_info, - s, &secdata->sec_info)) - goto error_return; - else if (secdata->sec_info) - secdata->sec_info_type = ELF_INFO_TYPE_MERGE; - } - } - - return true; - - error_return: - if (buf != NULL) - free (buf); - if (dynbuf != NULL) - free (dynbuf); - if (extversym != NULL) - free (extversym); - return false; -} - -/* Create some sections which will be filled in with dynamic linking - information. ABFD is an input file which requires dynamic sections - to be created. The dynamic sections take up virtual memory space - when the final executable is run, so we need to create them before - addresses are assigned to the output sections. We work out the - actual contents and size of these sections later. */ - -boolean -elf_link_create_dynamic_sections (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - flagword flags; - register asection *s; - struct elf_link_hash_entry *h; - struct elf_backend_data *bed; - - if (! is_elf_hash_table (info)) - return false; - - if (elf_hash_table (info)->dynamic_sections_created) - return true; - - /* Make sure that all dynamic sections use the same input BFD. */ - if (elf_hash_table (info)->dynobj == NULL) - elf_hash_table (info)->dynobj = abfd; - else - abfd = elf_hash_table (info)->dynobj; - - /* Note that we set the SEC_IN_MEMORY flag for all of these - sections. */ - flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS - | SEC_IN_MEMORY | SEC_LINKER_CREATED); - - /* A dynamically linked executable has a .interp section, but a - shared library does not. */ - if (! info->shared) - { - s = bfd_make_section (abfd, ".interp"); - if (s == NULL - || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)) - return false; - } - - if (! info->traditional_format - && info->hash->creator->flavour == bfd_target_elf_flavour) - { - s = bfd_make_section (abfd, ".eh_frame_hdr"); - if (s == NULL - || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) - || ! bfd_set_section_alignment (abfd, s, 2)) - return false; - } - - /* Create sections to hold version informations. These are removed - if they are not needed. */ - s = bfd_make_section (abfd, ".gnu.version_d"); - if (s == NULL - || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) - || ! bfd_set_section_alignment (abfd, s, LOG_FILE_ALIGN)) - return false; - - s = bfd_make_section (abfd, ".gnu.version"); - if (s == NULL - || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) - || ! bfd_set_section_alignment (abfd, s, 1)) - return false; - - s = bfd_make_section (abfd, ".gnu.version_r"); - if (s == NULL - || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) - || ! bfd_set_section_alignment (abfd, s, LOG_FILE_ALIGN)) - return false; - - s = bfd_make_section (abfd, ".dynsym"); - if (s == NULL - || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) - || ! bfd_set_section_alignment (abfd, s, LOG_FILE_ALIGN)) - return false; - - s = bfd_make_section (abfd, ".dynstr"); - if (s == NULL - || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)) - return false; - - /* Create a strtab to hold the dynamic symbol names. */ - if (elf_hash_table (info)->dynstr == NULL) - { - elf_hash_table (info)->dynstr = _bfd_elf_strtab_init (); - if (elf_hash_table (info)->dynstr == NULL) - return false; - } - - s = bfd_make_section (abfd, ".dynamic"); - if (s == NULL - || ! bfd_set_section_flags (abfd, s, flags) - || ! bfd_set_section_alignment (abfd, s, LOG_FILE_ALIGN)) - return false; - - /* The special symbol _DYNAMIC is always set to the start of the - .dynamic section. This call occurs before we have processed the - symbols for any dynamic object, so we don't have to worry about - overriding a dynamic definition. We could set _DYNAMIC in a - linker script, but we only want to define it if we are, in fact, - creating a .dynamic section. We don't want to define it if there - is no .dynamic section, since on some ELF platforms the start up - code examines it to decide how to initialize the process. */ - h = NULL; - if (! (_bfd_generic_link_add_one_symbol - (info, abfd, "_DYNAMIC", BSF_GLOBAL, s, (bfd_vma) 0, - (const char *) NULL, false, get_elf_backend_data (abfd)->collect, - (struct bfd_link_hash_entry **) &h))) - return false; - h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; - h->type = STT_OBJECT; - - if (info->shared - && ! _bfd_elf_link_record_dynamic_symbol (info, h)) - return false; - - bed = get_elf_backend_data (abfd); - - s = bfd_make_section (abfd, ".hash"); - if (s == NULL - || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) - || ! bfd_set_section_alignment (abfd, s, LOG_FILE_ALIGN)) - return false; - elf_section_data (s)->this_hdr.sh_entsize = bed->s->sizeof_hash_entry; - - /* Let the backend create the rest of the sections. This lets the - backend set the right flags. The backend will normally create - the .got and .plt sections. */ - if (! (*bed->elf_backend_create_dynamic_sections) (abfd, info)) - return false; - - elf_hash_table (info)->dynamic_sections_created = true; - - return true; -} - -/* Add an entry to the .dynamic table. */ - -boolean -elf_add_dynamic_entry (info, tag, val) - struct bfd_link_info *info; - bfd_vma tag; - bfd_vma val; -{ - Elf_Internal_Dyn dyn; - bfd *dynobj; - asection *s; - bfd_size_type newsize; - bfd_byte *newcontents; - - if (! is_elf_hash_table (info)) - return false; - - dynobj = elf_hash_table (info)->dynobj; - - s = bfd_get_section_by_name (dynobj, ".dynamic"); - BFD_ASSERT (s != NULL); - - newsize = s->_raw_size + sizeof (Elf_External_Dyn); - newcontents = (bfd_byte *) bfd_realloc (s->contents, newsize); - if (newcontents == NULL) - return false; - - dyn.d_tag = tag; - dyn.d_un.d_val = val; - elf_swap_dyn_out (dynobj, &dyn, - (Elf_External_Dyn *) (newcontents + s->_raw_size)); - - s->_raw_size = newsize; - s->contents = newcontents; - - return true; -} - -/* Record a new local dynamic symbol. */ - -boolean -elf_link_record_local_dynamic_symbol (info, input_bfd, input_indx) - struct bfd_link_info *info; - bfd *input_bfd; - long input_indx; -{ - struct elf_link_local_dynamic_entry *entry; - struct elf_link_hash_table *eht; - struct elf_strtab_hash *dynstr; - Elf_External_Sym esym; - Elf_External_Sym_Shndx eshndx; - Elf_External_Sym_Shndx *shndx; - unsigned long dynstr_index; - char *name; - file_ptr pos; - bfd_size_type amt; - - if (! is_elf_hash_table (info)) - return false; - - /* See if the entry exists already. */ - for (entry = elf_hash_table (info)->dynlocal; entry ; entry = entry->next) - if (entry->input_bfd == input_bfd && entry->input_indx == input_indx) - return true; - - entry = (struct elf_link_local_dynamic_entry *) - bfd_alloc (input_bfd, (bfd_size_type) sizeof (*entry)); - if (entry == NULL) - return false; - - /* Go find the symbol, so that we can find it's name. */ - amt = sizeof (Elf_External_Sym); - pos = elf_tdata (input_bfd)->symtab_hdr.sh_offset + input_indx * amt; - if (bfd_seek (input_bfd, pos, SEEK_SET) != 0 - || bfd_bread ((PTR) &esym, amt, input_bfd) != amt) - return false; - shndx = NULL; - if (elf_tdata (input_bfd)->symtab_shndx_hdr.sh_size != 0) - { - amt = sizeof (Elf_External_Sym_Shndx); - pos = elf_tdata (input_bfd)->symtab_shndx_hdr.sh_offset; - pos += input_indx * amt; - shndx = &eshndx; - if (bfd_seek (input_bfd, pos, SEEK_SET) != 0 - || bfd_bread ((PTR) shndx, amt, input_bfd) != amt) - return false; - } - elf_swap_symbol_in (input_bfd, &esym, shndx, &entry->isym); - - name = (bfd_elf_string_from_elf_section - (input_bfd, elf_tdata (input_bfd)->symtab_hdr.sh_link, - entry->isym.st_name)); - - dynstr = elf_hash_table (info)->dynstr; - if (dynstr == NULL) - { - /* Create a strtab to hold the dynamic symbol names. */ - elf_hash_table (info)->dynstr = dynstr = _bfd_elf_strtab_init (); - if (dynstr == NULL) - return false; - } - - dynstr_index = _bfd_elf_strtab_add (dynstr, name, false); - if (dynstr_index == (unsigned long) -1) - return false; - entry->isym.st_name = dynstr_index; - - eht = elf_hash_table (info); - - entry->next = eht->dynlocal; - eht->dynlocal = entry; - entry->input_bfd = input_bfd; - entry->input_indx = input_indx; - eht->dynsymcount++; - - /* Whatever binding the symbol had before, it's now local. */ - entry->isym.st_info - = ELF_ST_INFO (STB_LOCAL, ELF_ST_TYPE (entry->isym.st_info)); - - /* The dynindx will be set at the end of size_dynamic_sections. */ - - return true; -} - -/* Read and swap the relocs from the section indicated by SHDR. This - may be either a REL or a RELA section. The relocations are - translated into RELA relocations and stored in INTERNAL_RELOCS, - which should have already been allocated to contain enough space. - The EXTERNAL_RELOCS are a buffer where the external form of the - relocations should be stored. - - Returns false if something goes wrong. */ - -static boolean -elf_link_read_relocs_from_section (abfd, shdr, external_relocs, - internal_relocs) - bfd *abfd; - Elf_Internal_Shdr *shdr; - PTR external_relocs; - Elf_Internal_Rela *internal_relocs; -{ - struct elf_backend_data *bed; - bfd_size_type amt; - - /* If there aren't any relocations, that's OK. */ - if (!shdr) - return true; - - /* Position ourselves at the start of the section. */ - if (bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0) - return false; - - /* Read the relocations. */ - if (bfd_bread (external_relocs, shdr->sh_size, abfd) != shdr->sh_size) - return false; - - bed = get_elf_backend_data (abfd); - - /* Convert the external relocations to the internal format. */ - if (shdr->sh_entsize == sizeof (Elf_External_Rel)) - { - Elf_External_Rel *erel; - Elf_External_Rel *erelend; - Elf_Internal_Rela *irela; - Elf_Internal_Rel *irel; - - erel = (Elf_External_Rel *) external_relocs; - erelend = erel + NUM_SHDR_ENTRIES (shdr); - irela = internal_relocs; - amt = bed->s->int_rels_per_ext_rel * sizeof (Elf_Internal_Rel); - irel = bfd_alloc (abfd, amt); - for (; erel < erelend; erel++, irela += bed->s->int_rels_per_ext_rel) - { - unsigned int i; - - if (bed->s->swap_reloc_in) - (*bed->s->swap_reloc_in) (abfd, (bfd_byte *) erel, irel); - else - elf_swap_reloc_in (abfd, erel, irel); - - for (i = 0; i < bed->s->int_rels_per_ext_rel; ++i) - { - irela[i].r_offset = irel[i].r_offset; - irela[i].r_info = irel[i].r_info; - irela[i].r_addend = 0; - } - } - } - else - { - Elf_External_Rela *erela; - Elf_External_Rela *erelaend; - Elf_Internal_Rela *irela; - - BFD_ASSERT (shdr->sh_entsize == sizeof (Elf_External_Rela)); - - erela = (Elf_External_Rela *) external_relocs; - erelaend = erela + NUM_SHDR_ENTRIES (shdr); - irela = internal_relocs; - for (; erela < erelaend; erela++, irela += bed->s->int_rels_per_ext_rel) - { - if (bed->s->swap_reloca_in) - (*bed->s->swap_reloca_in) (abfd, (bfd_byte *) erela, irela); - else - elf_swap_reloca_in (abfd, erela, irela); - } - } - - return true; -} - -/* Read and swap the relocs for a section O. They may have been - cached. If the EXTERNAL_RELOCS and INTERNAL_RELOCS arguments are - not NULL, they are used as buffers to read into. They are known to - be large enough. If the INTERNAL_RELOCS relocs argument is NULL, - the return value is allocated using either malloc or bfd_alloc, - according to the KEEP_MEMORY argument. If O has two relocation - sections (both REL and RELA relocations), then the REL_HDR - relocations will appear first in INTERNAL_RELOCS, followed by the - REL_HDR2 relocations. */ - -Elf_Internal_Rela * -NAME(_bfd_elf,link_read_relocs) (abfd, o, external_relocs, internal_relocs, - keep_memory) - bfd *abfd; - asection *o; - PTR external_relocs; - Elf_Internal_Rela *internal_relocs; - boolean keep_memory; -{ - Elf_Internal_Shdr *rel_hdr; - PTR alloc1 = NULL; - Elf_Internal_Rela *alloc2 = NULL; - struct elf_backend_data *bed = get_elf_backend_data (abfd); - - if (elf_section_data (o)->relocs != NULL) - return elf_section_data (o)->relocs; - - if (o->reloc_count == 0) - return NULL; - - rel_hdr = &elf_section_data (o)->rel_hdr; - - if (internal_relocs == NULL) - { - bfd_size_type size; - - size = o->reloc_count; - size *= bed->s->int_rels_per_ext_rel * sizeof (Elf_Internal_Rela); - if (keep_memory) - internal_relocs = (Elf_Internal_Rela *) bfd_alloc (abfd, size); - else - internal_relocs = alloc2 = (Elf_Internal_Rela *) bfd_malloc (size); - if (internal_relocs == NULL) - goto error_return; - } - - if (external_relocs == NULL) - { - bfd_size_type size = rel_hdr->sh_size; - - if (elf_section_data (o)->rel_hdr2) - size += elf_section_data (o)->rel_hdr2->sh_size; - alloc1 = (PTR) bfd_malloc (size); - if (alloc1 == NULL) - goto error_return; - external_relocs = alloc1; - } - - if (!elf_link_read_relocs_from_section (abfd, rel_hdr, - external_relocs, - internal_relocs)) - goto error_return; - if (!elf_link_read_relocs_from_section - (abfd, - elf_section_data (o)->rel_hdr2, - ((bfd_byte *) external_relocs) + rel_hdr->sh_size, - internal_relocs + (NUM_SHDR_ENTRIES (rel_hdr) - * bed->s->int_rels_per_ext_rel))) - goto error_return; - - /* Cache the results for next time, if we can. */ - if (keep_memory) - elf_section_data (o)->relocs = internal_relocs; - - if (alloc1 != NULL) - free (alloc1); - - /* Don't free alloc2, since if it was allocated we are passing it - back (under the name of internal_relocs). */ - - return internal_relocs; - - error_return: - if (alloc1 != NULL) - free (alloc1); - if (alloc2 != NULL) - free (alloc2); - return NULL; -} - -/* Record an assignment to a symbol made by a linker script. We need - this in case some dynamic object refers to this symbol. */ - -boolean -NAME(bfd_elf,record_link_assignment) (output_bfd, info, name, provide) - bfd *output_bfd ATTRIBUTE_UNUSED; - struct bfd_link_info *info; - const char *name; - boolean provide; -{ - struct elf_link_hash_entry *h; - - if (info->hash->creator->flavour != bfd_target_elf_flavour) - return true; - - h = elf_link_hash_lookup (elf_hash_table (info), name, true, true, false); - if (h == NULL) - return false; - - if (h->root.type == bfd_link_hash_new) - h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF; - - /* If this symbol is being provided by the linker script, and it is - currently defined by a dynamic object, but not by a regular - object, then mark it as undefined so that the generic linker will - force the correct value. */ - if (provide - && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 - && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) - h->root.type = bfd_link_hash_undefined; - - /* If this symbol is not being provided by the linker script, and it is - currently defined by a dynamic object, but not by a regular object, - then clear out any version information because the symbol will not be - associated with the dynamic object any more. */ - if (!provide - && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 - && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) - h->verinfo.verdef = NULL; - - h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; - - if (((h->elf_link_hash_flags & (ELF_LINK_HASH_DEF_DYNAMIC - | ELF_LINK_HASH_REF_DYNAMIC)) != 0 - || info->shared) - && h->dynindx == -1) - { - if (! _bfd_elf_link_record_dynamic_symbol (info, h)) - return false; - - /* If this is a weak defined symbol, and we know a corresponding - real symbol from the same dynamic object, make sure the real - symbol is also made into a dynamic symbol. */ - if (h->weakdef != NULL - && h->weakdef->dynindx == -1) - { - if (! _bfd_elf_link_record_dynamic_symbol (info, h->weakdef)) - return false; - } - } - - return true; -} - -/* This structure is used to pass information to - elf_link_assign_sym_version. */ - -struct elf_assign_sym_version_info -{ - /* Output BFD. */ - bfd *output_bfd; - /* General link information. */ - struct bfd_link_info *info; - /* Version tree. */ - struct bfd_elf_version_tree *verdefs; - /* Whether we had a failure. */ - boolean failed; -}; - -/* This structure is used to pass information to - elf_link_find_version_dependencies. */ - -struct elf_find_verdep_info -{ - /* Output BFD. */ - bfd *output_bfd; - /* General link information. */ - struct bfd_link_info *info; - /* The number of dependencies. */ - unsigned int vers; - /* Whether we had a failure. */ - boolean failed; -}; - -/* Array used to determine the number of hash table buckets to use - based on the number of symbols there are. If there are fewer than - 3 symbols we use 1 bucket, fewer than 17 symbols we use 3 buckets, - fewer than 37 we use 17 buckets, and so forth. We never use more - than 32771 buckets. */ - -static const size_t elf_buckets[] = -{ - 1, 3, 17, 37, 67, 97, 131, 197, 263, 521, 1031, 2053, 4099, 8209, - 16411, 32771, 0 -}; - -/* Compute bucket count for hashing table. We do not use a static set - of possible tables sizes anymore. Instead we determine for all - possible reasonable sizes of the table the outcome (i.e., the - number of collisions etc) and choose the best solution. The - weighting functions are not too simple to allow the table to grow - without bounds. Instead one of the weighting factors is the size. - Therefore the result is always a good payoff between few collisions - (= short chain lengths) and table size. */ -static size_t -compute_bucket_count (info) - struct bfd_link_info *info; -{ - size_t dynsymcount = elf_hash_table (info)->dynsymcount; - size_t best_size = 0; - unsigned long int *hashcodes; - unsigned long int *hashcodesp; - unsigned long int i; - bfd_size_type amt; - - /* Compute the hash values for all exported symbols. At the same - time store the values in an array so that we could use them for - optimizations. */ - amt = dynsymcount; - amt *= sizeof (unsigned long int); - hashcodes = (unsigned long int *) bfd_malloc (amt); - if (hashcodes == NULL) - return 0; - hashcodesp = hashcodes; - - /* Put all hash values in HASHCODES. */ - elf_link_hash_traverse (elf_hash_table (info), - elf_collect_hash_codes, &hashcodesp); - -/* We have a problem here. The following code to optimize the table - size requires an integer type with more the 32 bits. If - BFD_HOST_U_64_BIT is set we know about such a type. */ -#ifdef BFD_HOST_U_64_BIT - if (info->optimize == true) - { - unsigned long int nsyms = hashcodesp - hashcodes; - size_t minsize; - size_t maxsize; - BFD_HOST_U_64_BIT best_chlen = ~((BFD_HOST_U_64_BIT) 0); - unsigned long int *counts ; - - /* Possible optimization parameters: if we have NSYMS symbols we say - that the hashing table must at least have NSYMS/4 and at most - 2*NSYMS buckets. */ - minsize = nsyms / 4; - if (minsize == 0) - minsize = 1; - best_size = maxsize = nsyms * 2; - - /* Create array where we count the collisions in. We must use bfd_malloc - since the size could be large. */ - amt = maxsize; - amt *= sizeof (unsigned long int); - counts = (unsigned long int *) bfd_malloc (amt); - if (counts == NULL) - { - free (hashcodes); - return 0; - } - - /* Compute the "optimal" size for the hash table. The criteria is a - minimal chain length. The minor criteria is (of course) the size - of the table. */ - for (i = minsize; i < maxsize; ++i) - { - /* Walk through the array of hashcodes and count the collisions. */ - BFD_HOST_U_64_BIT max; - unsigned long int j; - unsigned long int fact; - - memset (counts, '\0', i * sizeof (unsigned long int)); - - /* Determine how often each hash bucket is used. */ - for (j = 0; j < nsyms; ++j) - ++counts[hashcodes[j] % i]; - - /* For the weight function we need some information about the - pagesize on the target. This is information need not be 100% - accurate. Since this information is not available (so far) we - define it here to a reasonable default value. If it is crucial - to have a better value some day simply define this value. */ -# ifndef BFD_TARGET_PAGESIZE -# define BFD_TARGET_PAGESIZE (4096) -# endif - - /* We in any case need 2 + NSYMS entries for the size values and - the chains. */ - max = (2 + nsyms) * (ARCH_SIZE / 8); - -# if 1 - /* Variant 1: optimize for short chains. We add the squares - of all the chain lengths (which favous many small chain - over a few long chains). */ - for (j = 0; j < i; ++j) - max += counts[j] * counts[j]; - - /* This adds penalties for the overall size of the table. */ - fact = i / (BFD_TARGET_PAGESIZE / (ARCH_SIZE / 8)) + 1; - max *= fact * fact; -# else - /* Variant 2: Optimize a lot more for small table. Here we - also add squares of the size but we also add penalties for - empty slots (the +1 term). */ - for (j = 0; j < i; ++j) - max += (1 + counts[j]) * (1 + counts[j]); - - /* The overall size of the table is considered, but not as - strong as in variant 1, where it is squared. */ - fact = i / (BFD_TARGET_PAGESIZE / (ARCH_SIZE / 8)) + 1; - max *= fact; -# endif - - /* Compare with current best results. */ - if (max < best_chlen) - { - best_chlen = max; - best_size = i; - } - } - - free (counts); - } - else -#endif /* defined (BFD_HOST_U_64_BIT) */ - { - /* This is the fallback solution if no 64bit type is available or if we - are not supposed to spend much time on optimizations. We select the - bucket count using a fixed set of numbers. */ - for (i = 0; elf_buckets[i] != 0; i++) - { - best_size = elf_buckets[i]; - if (dynsymcount < elf_buckets[i + 1]) - break; - } - } - - /* Free the arrays we needed. */ - free (hashcodes); - - return best_size; -} - -/* Set up the sizes and contents of the ELF dynamic sections. This is - called by the ELF linker emulation before_allocation routine. We - must set the sizes of the sections before the linker sets the - addresses of the various sections. */ - -boolean -NAME(bfd_elf,size_dynamic_sections) (output_bfd, soname, rpath, - filter_shlib, - auxiliary_filters, info, sinterpptr, - verdefs) - bfd *output_bfd; - const char *soname; - const char *rpath; - const char *filter_shlib; - const char * const *auxiliary_filters; - struct bfd_link_info *info; - asection **sinterpptr; - struct bfd_elf_version_tree *verdefs; -{ - bfd_size_type soname_indx; - bfd *dynobj; - struct elf_backend_data *bed; - struct elf_assign_sym_version_info asvinfo; - - *sinterpptr = NULL; - - soname_indx = (bfd_size_type) -1; - - if (info->hash->creator->flavour != bfd_target_elf_flavour) - return true; - - if (! is_elf_hash_table (info)) - return false; - - /* Any syms created from now on start with -1 in - got.refcount/offset and plt.refcount/offset. */ - elf_hash_table (info)->init_refcount = -1; - - /* The backend may have to create some sections regardless of whether - we're dynamic or not. */ - bed = get_elf_backend_data (output_bfd); - if (bed->elf_backend_always_size_sections - && ! (*bed->elf_backend_always_size_sections) (output_bfd, info)) - return false; - - dynobj = elf_hash_table (info)->dynobj; - - /* If there were no dynamic objects in the link, there is nothing to - do here. */ - if (dynobj == NULL) - return true; - - if (! _bfd_elf_maybe_strip_eh_frame_hdr (info)) - return false; - - if (elf_hash_table (info)->dynamic_sections_created) - { - struct elf_info_failed eif; - struct elf_link_hash_entry *h; - asection *dynstr; - - *sinterpptr = bfd_get_section_by_name (dynobj, ".interp"); - BFD_ASSERT (*sinterpptr != NULL || info->shared); - - if (soname != NULL) - { - soname_indx = _bfd_elf_strtab_add (elf_hash_table (info)->dynstr, - soname, true); - if (soname_indx == (bfd_size_type) -1 - || ! elf_add_dynamic_entry (info, (bfd_vma) DT_SONAME, - soname_indx)) - return false; - } - - if (info->symbolic) - { - if (! elf_add_dynamic_entry (info, (bfd_vma) DT_SYMBOLIC, - (bfd_vma) 0)) - return false; - info->flags |= DF_SYMBOLIC; - } - - if (rpath != NULL) - { - bfd_size_type indx; - - indx = _bfd_elf_strtab_add (elf_hash_table (info)->dynstr, rpath, - true); - if (info->new_dtags) - _bfd_elf_strtab_addref (elf_hash_table (info)->dynstr, indx); - if (indx == (bfd_size_type) -1 - || ! elf_add_dynamic_entry (info, (bfd_vma) DT_RPATH, indx) - || (info->new_dtags - && ! elf_add_dynamic_entry (info, (bfd_vma) DT_RUNPATH, - indx))) - return false; - } - - if (filter_shlib != NULL) - { - bfd_size_type indx; - - indx = _bfd_elf_strtab_add (elf_hash_table (info)->dynstr, - filter_shlib, true); - if (indx == (bfd_size_type) -1 - || ! elf_add_dynamic_entry (info, (bfd_vma) DT_FILTER, indx)) - return false; - } - - if (auxiliary_filters != NULL) - { - const char * const *p; - - for (p = auxiliary_filters; *p != NULL; p++) - { - bfd_size_type indx; - - indx = _bfd_elf_strtab_add (elf_hash_table (info)->dynstr, - *p, true); - if (indx == (bfd_size_type) -1 - || ! elf_add_dynamic_entry (info, (bfd_vma) DT_AUXILIARY, - indx)) - return false; - } - } - - eif.info = info; - eif.verdefs = verdefs; - eif.failed = false; - - /* If we are supposed to export all symbols into the dynamic symbol - table (this is not the normal case), then do so. */ - if (info->export_dynamic) - { - elf_link_hash_traverse (elf_hash_table (info), elf_export_symbol, - (PTR) &eif); - if (eif.failed) - return false; - } - - /* Attach all the symbols to their version information. */ - asvinfo.output_bfd = output_bfd; - asvinfo.info = info; - asvinfo.verdefs = verdefs; - asvinfo.failed = false; - - elf_link_hash_traverse (elf_hash_table (info), - elf_link_assign_sym_version, - (PTR) &asvinfo); - if (asvinfo.failed) - return false; - - /* Find all symbols which were defined in a dynamic object and make - the backend pick a reasonable value for them. */ - elf_link_hash_traverse (elf_hash_table (info), - elf_adjust_dynamic_symbol, - (PTR) &eif); - if (eif.failed) - return false; - - /* Add some entries to the .dynamic section. We fill in some of the - values later, in elf_bfd_final_link, but we must add the entries - now so that we know the final size of the .dynamic section. */ - - /* If there are initialization and/or finalization functions to - call then add the corresponding DT_INIT/DT_FINI entries. */ - h = (info->init_function - ? elf_link_hash_lookup (elf_hash_table (info), - info->init_function, false, - false, false) - : NULL); - if (h != NULL - && (h->elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR - | ELF_LINK_HASH_DEF_REGULAR)) != 0) - { - if (! elf_add_dynamic_entry (info, (bfd_vma) DT_INIT, (bfd_vma) 0)) - return false; - } - h = (info->fini_function - ? elf_link_hash_lookup (elf_hash_table (info), - info->fini_function, false, - false, false) - : NULL); - if (h != NULL - && (h->elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR - | ELF_LINK_HASH_DEF_REGULAR)) != 0) - { - if (! elf_add_dynamic_entry (info, (bfd_vma) DT_FINI, (bfd_vma) 0)) - return false; - } - - if (bfd_get_section_by_name (output_bfd, ".preinit_array") != NULL) - { - /* DT_PREINIT_ARRAY is not allowed in shared library. */ - if (info->shared) - { - bfd *sub; - asection *o; - - for (sub = info->input_bfds; sub != NULL; - sub = sub->link_next) - for (o = sub->sections; o != NULL; o = o->next) - if (elf_section_data (o)->this_hdr.sh_type - == SHT_PREINIT_ARRAY) - { - (*_bfd_error_handler) - (_("%s: .preinit_array section is not allowed in DSO"), - bfd_archive_filename (sub)); - break; - } - - bfd_set_error (bfd_error_nonrepresentable_section); - return false; - } - - if (!elf_add_dynamic_entry (info, (bfd_vma) DT_PREINIT_ARRAY, - (bfd_vma) 0) - || !elf_add_dynamic_entry (info, (bfd_vma) DT_PREINIT_ARRAYSZ, - (bfd_vma) 0)) - return false; - } - if (bfd_get_section_by_name (output_bfd, ".init_array") != NULL) - { - if (!elf_add_dynamic_entry (info, (bfd_vma) DT_INIT_ARRAY, - (bfd_vma) 0) - || !elf_add_dynamic_entry (info, (bfd_vma) DT_INIT_ARRAYSZ, - (bfd_vma) 0)) - return false; - } - if (bfd_get_section_by_name (output_bfd, ".fini_array") != NULL) - { - if (!elf_add_dynamic_entry (info, (bfd_vma) DT_FINI_ARRAY, - (bfd_vma) 0) - || !elf_add_dynamic_entry (info, (bfd_vma) DT_FINI_ARRAYSZ, - (bfd_vma) 0)) - return false; - } - - dynstr = bfd_get_section_by_name (dynobj, ".dynstr"); - /* If .dynstr is excluded from the link, we don't want any of - these tags. Strictly, we should be checking each section - individually; This quick check covers for the case where - someone does a /DISCARD/ : { *(*) }. */ - if (dynstr != NULL && dynstr->output_section != bfd_abs_section_ptr) - { - bfd_size_type strsize; - - strsize = _bfd_elf_strtab_size (elf_hash_table (info)->dynstr); - if (! elf_add_dynamic_entry (info, (bfd_vma) DT_HASH, (bfd_vma) 0) - || ! elf_add_dynamic_entry (info, (bfd_vma) DT_STRTAB, (bfd_vma) 0) - || ! elf_add_dynamic_entry (info, (bfd_vma) DT_SYMTAB, (bfd_vma) 0) - || ! elf_add_dynamic_entry (info, (bfd_vma) DT_STRSZ, strsize) - || ! elf_add_dynamic_entry (info, (bfd_vma) DT_SYMENT, - (bfd_vma) sizeof (Elf_External_Sym))) - return false; - } - } - - /* The backend must work out the sizes of all the other dynamic - sections. */ - if (bed->elf_backend_size_dynamic_sections - && ! (*bed->elf_backend_size_dynamic_sections) (output_bfd, info)) - return false; - - if (elf_hash_table (info)->dynamic_sections_created) - { - bfd_size_type dynsymcount; - asection *s; - size_t bucketcount = 0; - size_t hash_entry_size; - unsigned int dtagcount; - - /* Set up the version definition section. */ - s = bfd_get_section_by_name (dynobj, ".gnu.version_d"); - BFD_ASSERT (s != NULL); - - /* We may have created additional version definitions if we are - just linking a regular application. */ - verdefs = asvinfo.verdefs; - - /* Skip anonymous version tag. */ - if (verdefs != NULL && verdefs->vernum == 0) - verdefs = verdefs->next; - - if (verdefs == NULL) - _bfd_strip_section_from_output (info, s); - else - { - unsigned int cdefs; - bfd_size_type size; - struct bfd_elf_version_tree *t; - bfd_byte *p; - Elf_Internal_Verdef def; - Elf_Internal_Verdaux defaux; - - cdefs = 0; - size = 0; - - /* Make space for the base version. */ - size += sizeof (Elf_External_Verdef); - size += sizeof (Elf_External_Verdaux); - ++cdefs; - - for (t = verdefs; t != NULL; t = t->next) - { - struct bfd_elf_version_deps *n; - - size += sizeof (Elf_External_Verdef); - size += sizeof (Elf_External_Verdaux); - ++cdefs; - - for (n = t->deps; n != NULL; n = n->next) - size += sizeof (Elf_External_Verdaux); - } - - s->_raw_size = size; - s->contents = (bfd_byte *) bfd_alloc (output_bfd, s->_raw_size); - if (s->contents == NULL && s->_raw_size != 0) - return false; - - /* Fill in the version definition section. */ - - p = s->contents; - - def.vd_version = VER_DEF_CURRENT; - def.vd_flags = VER_FLG_BASE; - def.vd_ndx = 1; - def.vd_cnt = 1; - def.vd_aux = sizeof (Elf_External_Verdef); - def.vd_next = (sizeof (Elf_External_Verdef) - + sizeof (Elf_External_Verdaux)); - - if (soname_indx != (bfd_size_type) -1) - { - _bfd_elf_strtab_addref (elf_hash_table (info)->dynstr, - soname_indx); - def.vd_hash = bfd_elf_hash (soname); - defaux.vda_name = soname_indx; - } - else - { - const char *name; - bfd_size_type indx; - - name = basename (output_bfd->filename); - def.vd_hash = bfd_elf_hash (name); - indx = _bfd_elf_strtab_add (elf_hash_table (info)->dynstr, - name, false); - if (indx == (bfd_size_type) -1) - return false; - defaux.vda_name = indx; - } - defaux.vda_next = 0; - - _bfd_elf_swap_verdef_out (output_bfd, &def, - (Elf_External_Verdef *) p); - p += sizeof (Elf_External_Verdef); - _bfd_elf_swap_verdaux_out (output_bfd, &defaux, - (Elf_External_Verdaux *) p); - p += sizeof (Elf_External_Verdaux); - - for (t = verdefs; t != NULL; t = t->next) - { - unsigned int cdeps; - struct bfd_elf_version_deps *n; - struct elf_link_hash_entry *h; - - cdeps = 0; - for (n = t->deps; n != NULL; n = n->next) - ++cdeps; - - /* Add a symbol representing this version. */ - h = NULL; - if (! (_bfd_generic_link_add_one_symbol - (info, dynobj, t->name, BSF_GLOBAL, bfd_abs_section_ptr, - (bfd_vma) 0, (const char *) NULL, false, - get_elf_backend_data (dynobj)->collect, - (struct bfd_link_hash_entry **) &h))) - return false; - h->elf_link_hash_flags &= ~ ELF_LINK_NON_ELF; - h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; - h->type = STT_OBJECT; - h->verinfo.vertree = t; - - if (! _bfd_elf_link_record_dynamic_symbol (info, h)) - return false; - - def.vd_version = VER_DEF_CURRENT; - def.vd_flags = 0; - if (t->globals == NULL && t->locals == NULL && ! t->used) - def.vd_flags |= VER_FLG_WEAK; - def.vd_ndx = t->vernum + 1; - def.vd_cnt = cdeps + 1; - def.vd_hash = bfd_elf_hash (t->name); - def.vd_aux = sizeof (Elf_External_Verdef); - if (t->next != NULL) - def.vd_next = (sizeof (Elf_External_Verdef) - + (cdeps + 1) * sizeof (Elf_External_Verdaux)); - else - def.vd_next = 0; - - _bfd_elf_swap_verdef_out (output_bfd, &def, - (Elf_External_Verdef *) p); - p += sizeof (Elf_External_Verdef); - - defaux.vda_name = h->dynstr_index; - _bfd_elf_strtab_addref (elf_hash_table (info)->dynstr, - h->dynstr_index); - if (t->deps == NULL) - defaux.vda_next = 0; - else - defaux.vda_next = sizeof (Elf_External_Verdaux); - t->name_indx = defaux.vda_name; - - _bfd_elf_swap_verdaux_out (output_bfd, &defaux, - (Elf_External_Verdaux *) p); - p += sizeof (Elf_External_Verdaux); - - for (n = t->deps; n != NULL; n = n->next) - { - if (n->version_needed == NULL) - { - /* This can happen if there was an error in the - version script. */ - defaux.vda_name = 0; - } - else - { - defaux.vda_name = n->version_needed->name_indx; - _bfd_elf_strtab_addref (elf_hash_table (info)->dynstr, - defaux.vda_name); - } - if (n->next == NULL) - defaux.vda_next = 0; - else - defaux.vda_next = sizeof (Elf_External_Verdaux); - - _bfd_elf_swap_verdaux_out (output_bfd, &defaux, - (Elf_External_Verdaux *) p); - p += sizeof (Elf_External_Verdaux); - } - } - - if (! elf_add_dynamic_entry (info, (bfd_vma) DT_VERDEF, (bfd_vma) 0) - || ! elf_add_dynamic_entry (info, (bfd_vma) DT_VERDEFNUM, - (bfd_vma) cdefs)) - return false; - - elf_tdata (output_bfd)->cverdefs = cdefs; - } - - if (info->new_dtags && info->flags) - { - if (! elf_add_dynamic_entry (info, (bfd_vma) DT_FLAGS, info->flags)) - return false; - } - - if (info->flags_1) - { - if (! info->shared) - info->flags_1 &= ~ (DF_1_INITFIRST - | DF_1_NODELETE - | DF_1_NOOPEN); - if (! elf_add_dynamic_entry (info, (bfd_vma) DT_FLAGS_1, - info->flags_1)) - return false; - } - - /* Work out the size of the version reference section. */ - - s = bfd_get_section_by_name (dynobj, ".gnu.version_r"); - BFD_ASSERT (s != NULL); - { - struct elf_find_verdep_info sinfo; - - sinfo.output_bfd = output_bfd; - sinfo.info = info; - sinfo.vers = elf_tdata (output_bfd)->cverdefs; - if (sinfo.vers == 0) - sinfo.vers = 1; - sinfo.failed = false; - - elf_link_hash_traverse (elf_hash_table (info), - elf_link_find_version_dependencies, - (PTR) &sinfo); - - if (elf_tdata (output_bfd)->verref == NULL) - _bfd_strip_section_from_output (info, s); - else - { - Elf_Internal_Verneed *t; - unsigned int size; - unsigned int crefs; - bfd_byte *p; - - /* Build the version definition section. */ - size = 0; - crefs = 0; - for (t = elf_tdata (output_bfd)->verref; - t != NULL; - t = t->vn_nextref) - { - Elf_Internal_Vernaux *a; - - size += sizeof (Elf_External_Verneed); - ++crefs; - for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) - size += sizeof (Elf_External_Vernaux); - } - - s->_raw_size = size; - s->contents = (bfd_byte *) bfd_alloc (output_bfd, s->_raw_size); - if (s->contents == NULL) - return false; - - p = s->contents; - for (t = elf_tdata (output_bfd)->verref; - t != NULL; - t = t->vn_nextref) - { - unsigned int caux; - Elf_Internal_Vernaux *a; - bfd_size_type indx; - - caux = 0; - for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) - ++caux; - - t->vn_version = VER_NEED_CURRENT; - t->vn_cnt = caux; - indx = _bfd_elf_strtab_add (elf_hash_table (info)->dynstr, - elf_dt_name (t->vn_bfd) != NULL - ? elf_dt_name (t->vn_bfd) - : basename (t->vn_bfd->filename), - false); - if (indx == (bfd_size_type) -1) - return false; - t->vn_file = indx; - t->vn_aux = sizeof (Elf_External_Verneed); - if (t->vn_nextref == NULL) - t->vn_next = 0; - else - t->vn_next = (sizeof (Elf_External_Verneed) - + caux * sizeof (Elf_External_Vernaux)); - - _bfd_elf_swap_verneed_out (output_bfd, t, - (Elf_External_Verneed *) p); - p += sizeof (Elf_External_Verneed); - - for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) - { - a->vna_hash = bfd_elf_hash (a->vna_nodename); - indx = _bfd_elf_strtab_add (elf_hash_table (info)->dynstr, - a->vna_nodename, false); - if (indx == (bfd_size_type) -1) - return false; - a->vna_name = indx; - if (a->vna_nextptr == NULL) - a->vna_next = 0; - else - a->vna_next = sizeof (Elf_External_Vernaux); - - _bfd_elf_swap_vernaux_out (output_bfd, a, - (Elf_External_Vernaux *) p); - p += sizeof (Elf_External_Vernaux); - } - } - - if (! elf_add_dynamic_entry (info, (bfd_vma) DT_VERNEED, - (bfd_vma) 0) - || ! elf_add_dynamic_entry (info, (bfd_vma) DT_VERNEEDNUM, - (bfd_vma) crefs)) - return false; - - elf_tdata (output_bfd)->cverrefs = crefs; - } - } - - /* Assign dynsym indicies. In a shared library we generate a - section symbol for each output section, which come first. - Next come all of the back-end allocated local dynamic syms, - followed by the rest of the global symbols. */ - - dynsymcount = _bfd_elf_link_renumber_dynsyms (output_bfd, info); - - /* Work out the size of the symbol version section. */ - s = bfd_get_section_by_name (dynobj, ".gnu.version"); - BFD_ASSERT (s != NULL); - if (dynsymcount == 0 - || (verdefs == NULL && elf_tdata (output_bfd)->verref == NULL)) - { - _bfd_strip_section_from_output (info, s); - /* The DYNSYMCOUNT might have changed if we were going to - output a dynamic symbol table entry for S. */ - dynsymcount = _bfd_elf_link_renumber_dynsyms (output_bfd, info); - } - else - { - s->_raw_size = dynsymcount * sizeof (Elf_External_Versym); - s->contents = (bfd_byte *) bfd_zalloc (output_bfd, s->_raw_size); - if (s->contents == NULL) - return false; - - if (! elf_add_dynamic_entry (info, (bfd_vma) DT_VERSYM, (bfd_vma) 0)) - return false; - } - - /* Set the size of the .dynsym and .hash sections. We counted - the number of dynamic symbols in elf_link_add_object_symbols. - We will build the contents of .dynsym and .hash when we build - the final symbol table, because until then we do not know the - correct value to give the symbols. We built the .dynstr - section as we went along in elf_link_add_object_symbols. */ - s = bfd_get_section_by_name (dynobj, ".dynsym"); - BFD_ASSERT (s != NULL); - s->_raw_size = dynsymcount * sizeof (Elf_External_Sym); - s->contents = (bfd_byte *) bfd_alloc (output_bfd, s->_raw_size); - if (s->contents == NULL && s->_raw_size != 0) - return false; - - if (dynsymcount != 0) - { - Elf_Internal_Sym isym; - - /* The first entry in .dynsym is a dummy symbol. */ - isym.st_value = 0; - isym.st_size = 0; - isym.st_name = 0; - isym.st_info = 0; - isym.st_other = 0; - isym.st_shndx = 0; - elf_swap_symbol_out (output_bfd, &isym, (PTR) s->contents, (PTR) 0); - } - - /* Compute the size of the hashing table. As a side effect this - computes the hash values for all the names we export. */ - bucketcount = compute_bucket_count (info); - - s = bfd_get_section_by_name (dynobj, ".hash"); - BFD_ASSERT (s != NULL); - hash_entry_size = elf_section_data (s)->this_hdr.sh_entsize; - s->_raw_size = ((2 + bucketcount + dynsymcount) * hash_entry_size); - s->contents = (bfd_byte *) bfd_alloc (output_bfd, s->_raw_size); - if (s->contents == NULL) - return false; - memset (s->contents, 0, (size_t) s->_raw_size); - - bfd_put (8 * hash_entry_size, output_bfd, (bfd_vma) bucketcount, - s->contents); - bfd_put (8 * hash_entry_size, output_bfd, (bfd_vma) dynsymcount, - s->contents + hash_entry_size); - - elf_hash_table (info)->bucketcount = bucketcount; - - s = bfd_get_section_by_name (dynobj, ".dynstr"); - BFD_ASSERT (s != NULL); - - elf_finalize_dynstr (output_bfd, info); - - s->_raw_size = _bfd_elf_strtab_size (elf_hash_table (info)->dynstr); - - for (dtagcount = 0; dtagcount <= info->spare_dynamic_tags; ++dtagcount) - if (! elf_add_dynamic_entry (info, (bfd_vma) DT_NULL, (bfd_vma) 0)) - return false; - } - - return true; -} - -/* This function is used to adjust offsets into .dynstr for - dynamic symbols. This is called via elf_link_hash_traverse. */ - -static boolean elf_adjust_dynstr_offsets -PARAMS ((struct elf_link_hash_entry *, PTR)); - -static boolean -elf_adjust_dynstr_offsets (h, data) - struct elf_link_hash_entry *h; - PTR data; -{ - struct elf_strtab_hash *dynstr = (struct elf_strtab_hash *) data; - - if (h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - - if (h->dynindx != -1) - h->dynstr_index = _bfd_elf_strtab_offset (dynstr, h->dynstr_index); - return true; -} - -/* Assign string offsets in .dynstr, update all structures referencing - them. */ - -static boolean -elf_finalize_dynstr (output_bfd, info) - bfd *output_bfd; - struct bfd_link_info *info; -{ - struct elf_link_local_dynamic_entry *entry; - struct elf_strtab_hash *dynstr = elf_hash_table (info)->dynstr; - bfd *dynobj = elf_hash_table (info)->dynobj; - asection *sdyn; - bfd_size_type size; - Elf_External_Dyn *dyncon, *dynconend; - - _bfd_elf_strtab_finalize (dynstr); - size = _bfd_elf_strtab_size (dynstr); - - /* Update all .dynamic entries referencing .dynstr strings. */ - sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); - BFD_ASSERT (sdyn != NULL); - - dyncon = (Elf_External_Dyn *) sdyn->contents; - dynconend = (Elf_External_Dyn *) (sdyn->contents + - sdyn->_raw_size); - for (; dyncon < dynconend; dyncon++) - { - Elf_Internal_Dyn dyn; - - elf_swap_dyn_in (dynobj, dyncon, & dyn); - switch (dyn.d_tag) - { - case DT_STRSZ: - dyn.d_un.d_val = size; - elf_swap_dyn_out (dynobj, & dyn, dyncon); - break; - case DT_NEEDED: - case DT_SONAME: - case DT_RPATH: - case DT_RUNPATH: - case DT_FILTER: - case DT_AUXILIARY: - dyn.d_un.d_val = _bfd_elf_strtab_offset (dynstr, dyn.d_un.d_val); - elf_swap_dyn_out (dynobj, & dyn, dyncon); - break; - default: - break; - } - } - - /* Now update local dynamic symbols. */ - for (entry = elf_hash_table (info)->dynlocal; entry ; entry = entry->next) - entry->isym.st_name = _bfd_elf_strtab_offset (dynstr, - entry->isym.st_name); - - /* And the rest of dynamic symbols. */ - elf_link_hash_traverse (elf_hash_table (info), - elf_adjust_dynstr_offsets, dynstr); - - /* Adjust version definitions. */ - if (elf_tdata (output_bfd)->cverdefs) - { - asection *s; - bfd_byte *p; - bfd_size_type i; - Elf_Internal_Verdef def; - Elf_Internal_Verdaux defaux; - - s = bfd_get_section_by_name (dynobj, ".gnu.version_d"); - p = (bfd_byte *) s->contents; - do - { - _bfd_elf_swap_verdef_in (output_bfd, (Elf_External_Verdef *) p, - &def); - p += sizeof (Elf_External_Verdef); - for (i = 0; i < def.vd_cnt; ++i) - { - _bfd_elf_swap_verdaux_in (output_bfd, - (Elf_External_Verdaux *) p, &defaux); - defaux.vda_name = _bfd_elf_strtab_offset (dynstr, - defaux.vda_name); - _bfd_elf_swap_verdaux_out (output_bfd, - &defaux, (Elf_External_Verdaux *) p); - p += sizeof (Elf_External_Verdaux); - } - } - while (def.vd_next); - } - - /* Adjust version references. */ - if (elf_tdata (output_bfd)->verref) - { - asection *s; - bfd_byte *p; - bfd_size_type i; - Elf_Internal_Verneed need; - Elf_Internal_Vernaux needaux; - - s = bfd_get_section_by_name (dynobj, ".gnu.version_r"); - p = (bfd_byte *) s->contents; - do - { - _bfd_elf_swap_verneed_in (output_bfd, (Elf_External_Verneed *) p, - &need); - need.vn_file = _bfd_elf_strtab_offset (dynstr, need.vn_file); - _bfd_elf_swap_verneed_out (output_bfd, &need, - (Elf_External_Verneed *) p); - p += sizeof (Elf_External_Verneed); - for (i = 0; i < need.vn_cnt; ++i) - { - _bfd_elf_swap_vernaux_in (output_bfd, - (Elf_External_Vernaux *) p, &needaux); - needaux.vna_name = _bfd_elf_strtab_offset (dynstr, - needaux.vna_name); - _bfd_elf_swap_vernaux_out (output_bfd, - &needaux, - (Elf_External_Vernaux *) p); - p += sizeof (Elf_External_Vernaux); - } - } - while (need.vn_next); - } - - return true; -} - -/* Fix up the flags for a symbol. This handles various cases which - can only be fixed after all the input files are seen. This is - currently called by both adjust_dynamic_symbol and - assign_sym_version, which is unnecessary but perhaps more robust in - the face of future changes. */ - -static boolean -elf_fix_symbol_flags (h, eif) - struct elf_link_hash_entry *h; - struct elf_info_failed *eif; -{ - /* If this symbol was mentioned in a non-ELF file, try to set - DEF_REGULAR and REF_REGULAR correctly. This is the only way to - permit a non-ELF file to correctly refer to a symbol defined in - an ELF dynamic object. */ - if ((h->elf_link_hash_flags & ELF_LINK_NON_ELF) != 0) - { - while (h->root.type == bfd_link_hash_indirect) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - - if (h->root.type != bfd_link_hash_defined - && h->root.type != bfd_link_hash_defweak) - h->elf_link_hash_flags |= (ELF_LINK_HASH_REF_REGULAR - | ELF_LINK_HASH_REF_REGULAR_NONWEAK); - else - { - if (h->root.u.def.section->owner != NULL - && (bfd_get_flavour (h->root.u.def.section->owner) - == bfd_target_elf_flavour)) - h->elf_link_hash_flags |= (ELF_LINK_HASH_REF_REGULAR - | ELF_LINK_HASH_REF_REGULAR_NONWEAK); - else - h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; - } - - if (h->dynindx == -1 - && ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 - || (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0)) - { - if (! _bfd_elf_link_record_dynamic_symbol (eif->info, h)) - { - eif->failed = true; - return false; - } - } - } - else - { - /* Unfortunately, ELF_LINK_NON_ELF is only correct if the symbol - was first seen in a non-ELF file. Fortunately, if the symbol - was first seen in an ELF file, we're probably OK unless the - symbol was defined in a non-ELF file. Catch that case here. - FIXME: We're still in trouble if the symbol was first seen in - a dynamic object, and then later in a non-ELF regular object. */ - if ((h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 - && (h->root.u.def.section->owner != NULL - ? (bfd_get_flavour (h->root.u.def.section->owner) - != bfd_target_elf_flavour) - : (bfd_is_abs_section (h->root.u.def.section) - && (h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_DYNAMIC) == 0))) - h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; - } - - /* If this is a final link, and the symbol was defined as a common - symbol in a regular object file, and there was no definition in - any dynamic object, then the linker will have allocated space for - the symbol in a common section but the ELF_LINK_HASH_DEF_REGULAR - flag will not have been set. */ - if (h->root.type == bfd_link_hash_defined - && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 - && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) != 0 - && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0 - && (h->root.u.def.section->owner->flags & DYNAMIC) == 0) - h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; - - /* If -Bsymbolic was used (which means to bind references to global - symbols to the definition within the shared object), and this - symbol was defined in a regular object, then it actually doesn't - need a PLT entry, and we can accomplish that by forcing it local. - Likewise, if the symbol has hidden or internal visibility. - FIXME: It might be that we also do not need a PLT for other - non-hidden visibilities, but we would have to tell that to the - backend specifically; we can't just clear PLT-related data here. */ - if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0 - && eif->info->shared - && is_elf_hash_table (eif->info) - && (eif->info->symbolic - || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL - || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN) - && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0) - { - struct elf_backend_data *bed; - boolean force_local; - - bed = get_elf_backend_data (elf_hash_table (eif->info)->dynobj); - - force_local = (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL - || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN); - (*bed->elf_backend_hide_symbol) (eif->info, h, force_local); - } - - /* If this is a weak defined symbol in a dynamic object, and we know - the real definition in the dynamic object, copy interesting flags - over to the real definition. */ - if (h->weakdef != NULL) - { - struct elf_link_hash_entry *weakdef; - - BFD_ASSERT (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak); - weakdef = h->weakdef; - BFD_ASSERT (weakdef->root.type == bfd_link_hash_defined - || weakdef->root.type == bfd_link_hash_defweak); - BFD_ASSERT (weakdef->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC); - - /* If the real definition is defined by a regular object file, - don't do anything special. See the longer description in - elf_adjust_dynamic_symbol, below. */ - if ((weakdef->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0) - h->weakdef = NULL; - else - { - struct elf_backend_data *bed; - - bed = get_elf_backend_data (elf_hash_table (eif->info)->dynobj); - (*bed->elf_backend_copy_indirect_symbol) (weakdef, h); - } - } - - return true; -} - -/* Make the backend pick a good value for a dynamic symbol. This is - called via elf_link_hash_traverse, and also calls itself - recursively. */ - -static boolean -elf_adjust_dynamic_symbol (h, data) - struct elf_link_hash_entry *h; - PTR data; -{ - struct elf_info_failed *eif = (struct elf_info_failed *) data; - bfd *dynobj; - struct elf_backend_data *bed; - - if (h->root.type == bfd_link_hash_warning) - { - h->plt.offset = (bfd_vma) -1; - h->got.offset = (bfd_vma) -1; - - /* When warning symbols are created, they **replace** the "real" - entry in the hash table, thus we never get to see the real - symbol in a hash traversal. So look at it now. */ - h = (struct elf_link_hash_entry *) h->root.u.i.link; - } - - /* Ignore indirect symbols. These are added by the versioning code. */ - if (h->root.type == bfd_link_hash_indirect) - return true; - - if (! is_elf_hash_table (eif->info)) - return false; - - /* Fix the symbol flags. */ - if (! elf_fix_symbol_flags (h, eif)) - return false; - - /* If this symbol does not require a PLT entry, and it is not - defined by a dynamic object, or is not referenced by a regular - object, ignore it. We do have to handle a weak defined symbol, - even if no regular object refers to it, if we decided to add it - to the dynamic symbol table. FIXME: Do we normally need to worry - about symbols which are defined by one dynamic object and - referenced by another one? */ - if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) == 0 - && ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 - || (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0 - || ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0 - && (h->weakdef == NULL || h->weakdef->dynindx == -1)))) - { - h->plt.offset = (bfd_vma) -1; - return true; - } - - /* If we've already adjusted this symbol, don't do it again. This - can happen via a recursive call. */ - if ((h->elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0) - return true; - - /* Don't look at this symbol again. Note that we must set this - after checking the above conditions, because we may look at a - symbol once, decide not to do anything, and then get called - recursively later after REF_REGULAR is set below. */ - h->elf_link_hash_flags |= ELF_LINK_HASH_DYNAMIC_ADJUSTED; - - /* If this is a weak definition, and we know a real definition, and - the real symbol is not itself defined by a regular object file, - then get a good value for the real definition. We handle the - real symbol first, for the convenience of the backend routine. - - Note that there is a confusing case here. If the real definition - is defined by a regular object file, we don't get the real symbol - from the dynamic object, but we do get the weak symbol. If the - processor backend uses a COPY reloc, then if some routine in the - dynamic object changes the real symbol, we will not see that - change in the corresponding weak symbol. This is the way other - ELF linkers work as well, and seems to be a result of the shared - library model. - - I will clarify this issue. Most SVR4 shared libraries define the - variable _timezone and define timezone as a weak synonym. The - tzset call changes _timezone. If you write - extern int timezone; - int _timezone = 5; - int main () { tzset (); printf ("%d %d\n", timezone, _timezone); } - you might expect that, since timezone is a synonym for _timezone, - the same number will print both times. However, if the processor - backend uses a COPY reloc, then actually timezone will be copied - into your process image, and, since you define _timezone - yourself, _timezone will not. Thus timezone and _timezone will - wind up at different memory locations. The tzset call will set - _timezone, leaving timezone unchanged. */ - - if (h->weakdef != NULL) - { - /* If we get to this point, we know there is an implicit - reference by a regular object file via the weak symbol H. - FIXME: Is this really true? What if the traversal finds - H->WEAKDEF before it finds H? */ - h->weakdef->elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR; - - if (! elf_adjust_dynamic_symbol (h->weakdef, (PTR) eif)) - return false; - } - - /* If a symbol has no type and no size and does not require a PLT - entry, then we are probably about to do the wrong thing here: we - are probably going to create a COPY reloc for an empty object. - This case can arise when a shared object is built with assembly - code, and the assembly code fails to set the symbol type. */ - if (h->size == 0 - && h->type == STT_NOTYPE - && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) == 0) - (*_bfd_error_handler) - (_("warning: type and size of dynamic symbol `%s' are not defined"), - h->root.root.string); - - dynobj = elf_hash_table (eif->info)->dynobj; - bed = get_elf_backend_data (dynobj); - if (! (*bed->elf_backend_adjust_dynamic_symbol) (eif->info, h)) - { - eif->failed = true; - return false; - } - - return true; -} - -/* This routine is used to export all defined symbols into the dynamic - symbol table. It is called via elf_link_hash_traverse. */ - -static boolean -elf_export_symbol (h, data) - struct elf_link_hash_entry *h; - PTR data; -{ - struct elf_info_failed *eif = (struct elf_info_failed *) data; - - /* Ignore indirect symbols. These are added by the versioning code. */ - if (h->root.type == bfd_link_hash_indirect) - return true; - - if (h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - - if (h->dynindx == -1 - && (h->elf_link_hash_flags - & (ELF_LINK_HASH_DEF_REGULAR | ELF_LINK_HASH_REF_REGULAR)) != 0) - { - struct bfd_elf_version_tree *t; - struct bfd_elf_version_expr *d; - - for (t = eif->verdefs; t != NULL; t = t->next) - { - if (t->globals != NULL) - { - for (d = t->globals; d != NULL; d = d->next) - { - if ((*d->match) (d, h->root.root.string)) - goto doit; - } - } - - if (t->locals != NULL) - { - for (d = t->locals ; d != NULL; d = d->next) - { - if ((*d->match) (d, h->root.root.string)) - return true; - } - } - } - - if (!eif->verdefs) - { -doit: - if (! _bfd_elf_link_record_dynamic_symbol (eif->info, h)) - { - eif->failed = true; - return false; - } - } - } - - return true; -} - -/* Look through the symbols which are defined in other shared - libraries and referenced here. Update the list of version - dependencies. This will be put into the .gnu.version_r section. - This function is called via elf_link_hash_traverse. */ - -static boolean -elf_link_find_version_dependencies (h, data) - struct elf_link_hash_entry *h; - PTR data; -{ - struct elf_find_verdep_info *rinfo = (struct elf_find_verdep_info *) data; - Elf_Internal_Verneed *t; - Elf_Internal_Vernaux *a; - bfd_size_type amt; - - if (h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - - /* We only care about symbols defined in shared objects with version - information. */ - if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0 - || (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 - || h->dynindx == -1 - || h->verinfo.verdef == NULL) - return true; - - /* See if we already know about this version. */ - for (t = elf_tdata (rinfo->output_bfd)->verref; t != NULL; t = t->vn_nextref) - { - if (t->vn_bfd != h->verinfo.verdef->vd_bfd) - continue; - - for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr) - if (a->vna_nodename == h->verinfo.verdef->vd_nodename) - return true; - - break; - } - - /* This is a new version. Add it to tree we are building. */ - - if (t == NULL) - { - amt = sizeof *t; - t = (Elf_Internal_Verneed *) bfd_zalloc (rinfo->output_bfd, amt); - if (t == NULL) - { - rinfo->failed = true; - return false; - } - - t->vn_bfd = h->verinfo.verdef->vd_bfd; - t->vn_nextref = elf_tdata (rinfo->output_bfd)->verref; - elf_tdata (rinfo->output_bfd)->verref = t; - } - - amt = sizeof *a; - a = (Elf_Internal_Vernaux *) bfd_zalloc (rinfo->output_bfd, amt); - - /* Note that we are copying a string pointer here, and testing it - above. If bfd_elf_string_from_elf_section is ever changed to - discard the string data when low in memory, this will have to be - fixed. */ - a->vna_nodename = h->verinfo.verdef->vd_nodename; - - a->vna_flags = h->verinfo.verdef->vd_flags; - a->vna_nextptr = t->vn_auxptr; - - h->verinfo.verdef->vd_exp_refno = rinfo->vers; - ++rinfo->vers; - - a->vna_other = h->verinfo.verdef->vd_exp_refno + 1; - - t->vn_auxptr = a; - - return true; -} - -/* Figure out appropriate versions for all the symbols. We may not - have the version number script until we have read all of the input - files, so until that point we don't know which symbols should be - local. This function is called via elf_link_hash_traverse. */ - -static boolean -elf_link_assign_sym_version (h, data) - struct elf_link_hash_entry *h; - PTR data; -{ - struct elf_assign_sym_version_info *sinfo; - struct bfd_link_info *info; - struct elf_backend_data *bed; - struct elf_info_failed eif; - char *p; - bfd_size_type amt; - - sinfo = (struct elf_assign_sym_version_info *) data; - info = sinfo->info; - - if (h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - - /* Fix the symbol flags. */ - eif.failed = false; - eif.info = info; - if (! elf_fix_symbol_flags (h, &eif)) - { - if (eif.failed) - sinfo->failed = true; - return false; - } - - /* We only need version numbers for symbols defined in regular - objects. */ - if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) - return true; - - bed = get_elf_backend_data (sinfo->output_bfd); - p = strchr (h->root.root.string, ELF_VER_CHR); - if (p != NULL && h->verinfo.vertree == NULL) - { - struct bfd_elf_version_tree *t; - boolean hidden; - - hidden = true; - - /* There are two consecutive ELF_VER_CHR characters if this is - not a hidden symbol. */ - ++p; - if (*p == ELF_VER_CHR) - { - hidden = false; - ++p; - } - - /* If there is no version string, we can just return out. */ - if (*p == '\0') - { - if (hidden) - h->elf_link_hash_flags |= ELF_LINK_HIDDEN; - return true; - } - - /* Look for the version. If we find it, it is no longer weak. */ - for (t = sinfo->verdefs; t != NULL; t = t->next) - { - if (strcmp (t->name, p) == 0) - { - size_t len; - char *alc; - struct bfd_elf_version_expr *d; - - len = p - h->root.root.string; - alc = bfd_malloc ((bfd_size_type) len); - if (alc == NULL) - return false; - strncpy (alc, h->root.root.string, len - 1); - alc[len - 1] = '\0'; - if (alc[len - 2] == ELF_VER_CHR) - alc[len - 2] = '\0'; - - h->verinfo.vertree = t; - t->used = true; - d = NULL; - - if (t->globals != NULL) - { - for (d = t->globals; d != NULL; d = d->next) - if ((*d->match) (d, alc)) - break; - } - - /* See if there is anything to force this symbol to - local scope. */ - if (d == NULL && t->locals != NULL) - { - for (d = t->locals; d != NULL; d = d->next) - { - if ((*d->match) (d, alc)) - { - if (h->dynindx != -1 - && info->shared - && ! info->export_dynamic) - { - (*bed->elf_backend_hide_symbol) (info, h, true); - } - - break; - } - } - } - - free (alc); - break; - } - } - - /* If we are building an application, we need to create a - version node for this version. */ - if (t == NULL && ! info->shared) - { - struct bfd_elf_version_tree **pp; - int version_index; - - /* If we aren't going to export this symbol, we don't need - to worry about it. */ - if (h->dynindx == -1) - return true; - - amt = sizeof *t; - t = ((struct bfd_elf_version_tree *) - bfd_alloc (sinfo->output_bfd, amt)); - if (t == NULL) - { - sinfo->failed = true; - return false; - } - - t->next = NULL; - t->name = p; - t->globals = NULL; - t->locals = NULL; - t->deps = NULL; - t->name_indx = (unsigned int) -1; - t->used = true; - - version_index = 1; - /* Don't count anonymous version tag. */ - if (sinfo->verdefs != NULL && sinfo->verdefs->vernum == 0) - version_index = 0; - for (pp = &sinfo->verdefs; *pp != NULL; pp = &(*pp)->next) - ++version_index; - t->vernum = version_index; - - *pp = t; - - h->verinfo.vertree = t; - } - else if (t == NULL) - { - /* We could not find the version for a symbol when - generating a shared archive. Return an error. */ - (*_bfd_error_handler) - (_("%s: undefined versioned symbol name %s"), - bfd_get_filename (sinfo->output_bfd), h->root.root.string); - bfd_set_error (bfd_error_bad_value); - sinfo->failed = true; - return false; - } - - if (hidden) - h->elf_link_hash_flags |= ELF_LINK_HIDDEN; - } - - /* If we don't have a version for this symbol, see if we can find - something. */ - if (h->verinfo.vertree == NULL && sinfo->verdefs != NULL) - { - struct bfd_elf_version_tree *t; - struct bfd_elf_version_tree *deflt; - struct bfd_elf_version_expr *d; - - /* See if can find what version this symbol is in. If the - symbol is supposed to be local, then don't actually register - it. */ - deflt = NULL; - for (t = sinfo->verdefs; t != NULL; t = t->next) - { - if (t->globals != NULL) - { - for (d = t->globals; d != NULL; d = d->next) - { - if ((*d->match) (d, h->root.root.string)) - { - h->verinfo.vertree = t; - break; - } - } - - if (d != NULL) - break; - } - - if (t->locals != NULL) - { - for (d = t->locals; d != NULL; d = d->next) - { - if (d->pattern[0] == '*' && d->pattern[1] == '\0') - deflt = t; - else if ((*d->match) (d, h->root.root.string)) - { - h->verinfo.vertree = t; - if (h->dynindx != -1 - && info->shared - && ! info->export_dynamic) - { - (*bed->elf_backend_hide_symbol) (info, h, true); - } - break; - } - } - - if (d != NULL) - break; - } - } - - if (deflt != NULL && h->verinfo.vertree == NULL) - { - h->verinfo.vertree = deflt; - if (h->dynindx != -1 - && info->shared - && ! info->export_dynamic) - { - (*bed->elf_backend_hide_symbol) (info, h, true); - } - } - } - - return true; -} - -/* Final phase of ELF linker. */ - -/* A structure we use to avoid passing large numbers of arguments. */ - -struct elf_final_link_info -{ - /* General link information. */ - struct bfd_link_info *info; - /* Output BFD. */ - bfd *output_bfd; - /* Symbol string table. */ - struct bfd_strtab_hash *symstrtab; - /* .dynsym section. */ - asection *dynsym_sec; - /* .hash section. */ - asection *hash_sec; - /* symbol version section (.gnu.version). */ - asection *symver_sec; - /* Buffer large enough to hold contents of any section. */ - bfd_byte *contents; - /* Buffer large enough to hold external relocs of any section. */ - PTR external_relocs; - /* Buffer large enough to hold internal relocs of any section. */ - Elf_Internal_Rela *internal_relocs; - /* Buffer large enough to hold external local symbols of any input - BFD. */ - Elf_External_Sym *external_syms; - /* And a buffer for symbol section indices. */ - Elf_External_Sym_Shndx *locsym_shndx; - /* Buffer large enough to hold internal local symbols of any input - BFD. */ - Elf_Internal_Sym *internal_syms; - /* Array large enough to hold a symbol index for each local symbol - of any input BFD. */ - long *indices; - /* Array large enough to hold a section pointer for each local - symbol of any input BFD. */ - asection **sections; - /* Buffer to hold swapped out symbols. */ - Elf_External_Sym *symbuf; - /* And one for symbol section indices. */ - Elf_External_Sym_Shndx *symshndxbuf; - /* Number of swapped out symbols in buffer. */ - size_t symbuf_count; - /* Number of symbols which fit in symbuf. */ - size_t symbuf_size; -}; - -static boolean elf_link_output_sym - PARAMS ((struct elf_final_link_info *, const char *, - Elf_Internal_Sym *, asection *)); -static boolean elf_link_flush_output_syms - PARAMS ((struct elf_final_link_info *)); -static boolean elf_link_output_extsym - PARAMS ((struct elf_link_hash_entry *, PTR)); -static boolean elf_link_sec_merge_syms - PARAMS ((struct elf_link_hash_entry *, PTR)); -static boolean elf_link_input_bfd - PARAMS ((struct elf_final_link_info *, bfd *)); -static boolean elf_reloc_link_order - PARAMS ((bfd *, struct bfd_link_info *, asection *, - struct bfd_link_order *)); - -/* This struct is used to pass information to elf_link_output_extsym. */ - -struct elf_outext_info -{ - boolean failed; - boolean localsyms; - struct elf_final_link_info *finfo; -}; - -/* Compute the size of, and allocate space for, REL_HDR which is the - section header for a section containing relocations for O. */ - -static boolean -elf_link_size_reloc_section (abfd, rel_hdr, o) - bfd *abfd; - Elf_Internal_Shdr *rel_hdr; - asection *o; -{ - bfd_size_type reloc_count; - bfd_size_type num_rel_hashes; - - /* Figure out how many relocations there will be. */ - if (rel_hdr == &elf_section_data (o)->rel_hdr) - reloc_count = elf_section_data (o)->rel_count; - else - reloc_count = elf_section_data (o)->rel_count2; - - num_rel_hashes = o->reloc_count; - if (num_rel_hashes < reloc_count) - num_rel_hashes = reloc_count; - - /* That allows us to calculate the size of the section. */ - rel_hdr->sh_size = rel_hdr->sh_entsize * reloc_count; - - /* The contents field must last into write_object_contents, so we - allocate it with bfd_alloc rather than malloc. Also since we - cannot be sure that the contents will actually be filled in, - we zero the allocated space. */ - rel_hdr->contents = (PTR) bfd_zalloc (abfd, rel_hdr->sh_size); - if (rel_hdr->contents == NULL && rel_hdr->sh_size != 0) - return false; - - /* We only allocate one set of hash entries, so we only do it the - first time we are called. */ - if (elf_section_data (o)->rel_hashes == NULL - && num_rel_hashes) - { - struct elf_link_hash_entry **p; - - p = ((struct elf_link_hash_entry **) - bfd_zmalloc (num_rel_hashes - * sizeof (struct elf_link_hash_entry *))); - if (p == NULL) - return false; - - elf_section_data (o)->rel_hashes = p; - } - - return true; -} - -/* When performing a relocateable link, the input relocations are - preserved. But, if they reference global symbols, the indices - referenced must be updated. Update all the relocations in - REL_HDR (there are COUNT of them), using the data in REL_HASH. */ - -static void -elf_link_adjust_relocs (abfd, rel_hdr, count, rel_hash) - bfd *abfd; - Elf_Internal_Shdr *rel_hdr; - unsigned int count; - struct elf_link_hash_entry **rel_hash; -{ - unsigned int i; - struct elf_backend_data *bed = get_elf_backend_data (abfd); - Elf_Internal_Rel *irel; - Elf_Internal_Rela *irela; - bfd_size_type amt = sizeof (Elf_Internal_Rel) * bed->s->int_rels_per_ext_rel; - - irel = (Elf_Internal_Rel *) bfd_zmalloc (amt); - if (irel == NULL) - { - (*_bfd_error_handler) (_("Error: out of memory")); - abort (); - } - - amt = sizeof (Elf_Internal_Rela) * bed->s->int_rels_per_ext_rel; - irela = (Elf_Internal_Rela *) bfd_zmalloc (amt); - if (irela == NULL) - { - (*_bfd_error_handler) (_("Error: out of memory")); - abort (); - } - - for (i = 0; i < count; i++, rel_hash++) - { - if (*rel_hash == NULL) - continue; - - BFD_ASSERT ((*rel_hash)->indx >= 0); - - if (rel_hdr->sh_entsize == sizeof (Elf_External_Rel)) - { - Elf_External_Rel *erel; - unsigned int j; - - erel = (Elf_External_Rel *) rel_hdr->contents + i; - if (bed->s->swap_reloc_in) - (*bed->s->swap_reloc_in) (abfd, (bfd_byte *) erel, irel); - else - elf_swap_reloc_in (abfd, erel, irel); - - for (j = 0; j < bed->s->int_rels_per_ext_rel; j++) - irel[j].r_info = ELF_R_INFO ((*rel_hash)->indx, - ELF_R_TYPE (irel[j].r_info)); - - if (bed->s->swap_reloc_out) - (*bed->s->swap_reloc_out) (abfd, irel, (bfd_byte *) erel); - else - elf_swap_reloc_out (abfd, irel, erel); - } - else - { - Elf_External_Rela *erela; - unsigned int j; - - BFD_ASSERT (rel_hdr->sh_entsize - == sizeof (Elf_External_Rela)); - - erela = (Elf_External_Rela *) rel_hdr->contents + i; - if (bed->s->swap_reloca_in) - (*bed->s->swap_reloca_in) (abfd, (bfd_byte *) erela, irela); - else - elf_swap_reloca_in (abfd, erela, irela); - - for (j = 0; j < bed->s->int_rels_per_ext_rel; j++) - irela[j].r_info = ELF_R_INFO ((*rel_hash)->indx, - ELF_R_TYPE (irela[j].r_info)); - - if (bed->s->swap_reloca_out) - (*bed->s->swap_reloca_out) (abfd, irela, (bfd_byte *) erela); - else - elf_swap_reloca_out (abfd, irela, erela); - } - } - - free (irel); - free (irela); -} - -struct elf_link_sort_rela { - bfd_vma offset; - enum elf_reloc_type_class type; - union { - Elf_Internal_Rel rel; - Elf_Internal_Rela rela; - } u; -}; - -static int -elf_link_sort_cmp1 (A, B) - const PTR A; - const PTR B; -{ - struct elf_link_sort_rela *a = (struct elf_link_sort_rela *) A; - struct elf_link_sort_rela *b = (struct elf_link_sort_rela *) B; - int relativea, relativeb; - - relativea = a->type == reloc_class_relative; - relativeb = b->type == reloc_class_relative; - - if (relativea < relativeb) - return 1; - if (relativea > relativeb) - return -1; - if (ELF_R_SYM (a->u.rel.r_info) < ELF_R_SYM (b->u.rel.r_info)) - return -1; - if (ELF_R_SYM (a->u.rel.r_info) > ELF_R_SYM (b->u.rel.r_info)) - return 1; - if (a->u.rel.r_offset < b->u.rel.r_offset) - return -1; - if (a->u.rel.r_offset > b->u.rel.r_offset) - return 1; - return 0; -} - -static int -elf_link_sort_cmp2 (A, B) - const PTR A; - const PTR B; -{ - struct elf_link_sort_rela *a = (struct elf_link_sort_rela *) A; - struct elf_link_sort_rela *b = (struct elf_link_sort_rela *) B; - int copya, copyb; - - if (a->offset < b->offset) - return -1; - if (a->offset > b->offset) - return 1; - copya = (a->type == reloc_class_copy) * 2 + (a->type == reloc_class_plt); - copyb = (b->type == reloc_class_copy) * 2 + (b->type == reloc_class_plt); - if (copya < copyb) - return -1; - if (copya > copyb) - return 1; - if (a->u.rel.r_offset < b->u.rel.r_offset) - return -1; - if (a->u.rel.r_offset > b->u.rel.r_offset) - return 1; - return 0; -} - -static size_t -elf_link_sort_relocs (abfd, info, psec) - bfd *abfd; - struct bfd_link_info *info; - asection **psec; -{ - bfd *dynobj = elf_hash_table (info)->dynobj; - asection *reldyn, *o; - boolean rel = false; - bfd_size_type count, size; - size_t i, j, ret; - struct elf_link_sort_rela *rela; - struct elf_backend_data *bed = get_elf_backend_data (abfd); - - reldyn = bfd_get_section_by_name (abfd, ".rela.dyn"); - if (reldyn == NULL || reldyn->_raw_size == 0) - { - reldyn = bfd_get_section_by_name (abfd, ".rel.dyn"); - if (reldyn == NULL || reldyn->_raw_size == 0) - return 0; - rel = true; - count = reldyn->_raw_size / sizeof (Elf_External_Rel); - } - else - count = reldyn->_raw_size / sizeof (Elf_External_Rela); - - size = 0; - for (o = dynobj->sections; o != NULL; o = o->next) - if ((o->flags & (SEC_HAS_CONTENTS|SEC_LINKER_CREATED)) - == (SEC_HAS_CONTENTS|SEC_LINKER_CREATED) - && o->output_section == reldyn) - size += o->_raw_size; - - if (size != reldyn->_raw_size) - return 0; - - rela = (struct elf_link_sort_rela *) bfd_zmalloc (sizeof (*rela) * count); - if (rela == NULL) - { - (*info->callbacks->warning) - (info, _("Not enough memory to sort relocations"), 0, abfd, 0, - (bfd_vma) 0); - return 0; - } - - for (o = dynobj->sections; o != NULL; o = o->next) - if ((o->flags & (SEC_HAS_CONTENTS|SEC_LINKER_CREATED)) - == (SEC_HAS_CONTENTS|SEC_LINKER_CREATED) - && o->output_section == reldyn) - { - if (rel) - { - Elf_External_Rel *erel, *erelend; - struct elf_link_sort_rela *s; - - erel = (Elf_External_Rel *) o->contents; - erelend = (Elf_External_Rel *) (o->contents + o->_raw_size); - s = rela + o->output_offset / sizeof (Elf_External_Rel); - for (; erel < erelend; erel++, s++) - { - if (bed->s->swap_reloc_in) - (*bed->s->swap_reloc_in) (abfd, (bfd_byte *) erel, &s->u.rel); - else - elf_swap_reloc_in (abfd, erel, &s->u.rel); - - s->type = (*bed->elf_backend_reloc_type_class) (&s->u.rela); - } - } - else - { - Elf_External_Rela *erela, *erelaend; - struct elf_link_sort_rela *s; - - erela = (Elf_External_Rela *) o->contents; - erelaend = (Elf_External_Rela *) (o->contents + o->_raw_size); - s = rela + o->output_offset / sizeof (Elf_External_Rela); - for (; erela < erelaend; erela++, s++) - { - if (bed->s->swap_reloca_in) - (*bed->s->swap_reloca_in) (dynobj, (bfd_byte *) erela, - &s->u.rela); - else - elf_swap_reloca_in (dynobj, erela, &s->u.rela); - - s->type = (*bed->elf_backend_reloc_type_class) (&s->u.rela); - } - } - } - - qsort (rela, (size_t) count, sizeof (*rela), elf_link_sort_cmp1); - for (ret = 0; ret < count && rela[ret].type == reloc_class_relative; ret++) - ; - for (i = ret, j = ret; i < count; i++) - { - if (ELF_R_SYM (rela[i].u.rel.r_info) != ELF_R_SYM (rela[j].u.rel.r_info)) - j = i; - rela[i].offset = rela[j].u.rel.r_offset; - } - qsort (rela + ret, (size_t) count - ret, sizeof (*rela), elf_link_sort_cmp2); - - for (o = dynobj->sections; o != NULL; o = o->next) - if ((o->flags & (SEC_HAS_CONTENTS|SEC_LINKER_CREATED)) - == (SEC_HAS_CONTENTS|SEC_LINKER_CREATED) - && o->output_section == reldyn) - { - if (rel) - { - Elf_External_Rel *erel, *erelend; - struct elf_link_sort_rela *s; - - erel = (Elf_External_Rel *) o->contents; - erelend = (Elf_External_Rel *) (o->contents + o->_raw_size); - s = rela + o->output_offset / sizeof (Elf_External_Rel); - for (; erel < erelend; erel++, s++) - { - if (bed->s->swap_reloc_out) - (*bed->s->swap_reloc_out) (abfd, &s->u.rel, - (bfd_byte *) erel); - else - elf_swap_reloc_out (abfd, &s->u.rel, erel); - } - } - else - { - Elf_External_Rela *erela, *erelaend; - struct elf_link_sort_rela *s; - - erela = (Elf_External_Rela *) o->contents; - erelaend = (Elf_External_Rela *) (o->contents + o->_raw_size); - s = rela + o->output_offset / sizeof (Elf_External_Rela); - for (; erela < erelaend; erela++, s++) - { - if (bed->s->swap_reloca_out) - (*bed->s->swap_reloca_out) (dynobj, &s->u.rela, - (bfd_byte *) erela); - else - elf_swap_reloca_out (dynobj, &s->u.rela, erela); - } - } - } - - free (rela); - *psec = reldyn; - return ret; -} - -/* Do the final step of an ELF link. */ - -boolean -elf_bfd_final_link (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - boolean dynamic; - boolean emit_relocs; - bfd *dynobj; - struct elf_final_link_info finfo; - register asection *o; - register struct bfd_link_order *p; - register bfd *sub; - bfd_size_type max_contents_size; - bfd_size_type max_external_reloc_size; - bfd_size_type max_internal_reloc_count; - bfd_size_type max_sym_count; - bfd_size_type max_sym_shndx_count; - file_ptr off; - Elf_Internal_Sym elfsym; - unsigned int i; - Elf_Internal_Shdr *symtab_hdr; - Elf_Internal_Shdr *symstrtab_hdr; - struct elf_backend_data *bed = get_elf_backend_data (abfd); - struct elf_outext_info eoinfo; - boolean merged; - size_t relativecount = 0; - asection *reldyn = 0; - bfd_size_type amt; - - if (! is_elf_hash_table (info)) - return false; - - if (info->shared) - abfd->flags |= DYNAMIC; - - dynamic = elf_hash_table (info)->dynamic_sections_created; - dynobj = elf_hash_table (info)->dynobj; - - emit_relocs = (info->relocateable - || info->emitrelocations - || bed->elf_backend_emit_relocs); - - finfo.info = info; - finfo.output_bfd = abfd; - finfo.symstrtab = elf_stringtab_init (); - if (finfo.symstrtab == NULL) - return false; - - if (! dynamic) - { - finfo.dynsym_sec = NULL; - finfo.hash_sec = NULL; - finfo.symver_sec = NULL; - } - else - { - finfo.dynsym_sec = bfd_get_section_by_name (dynobj, ".dynsym"); - finfo.hash_sec = bfd_get_section_by_name (dynobj, ".hash"); - BFD_ASSERT (finfo.dynsym_sec != NULL && finfo.hash_sec != NULL); - finfo.symver_sec = bfd_get_section_by_name (dynobj, ".gnu.version"); - /* Note that it is OK if symver_sec is NULL. */ - } - - finfo.contents = NULL; - finfo.external_relocs = NULL; - finfo.internal_relocs = NULL; - finfo.external_syms = NULL; - finfo.locsym_shndx = NULL; - finfo.internal_syms = NULL; - finfo.indices = NULL; - finfo.sections = NULL; - finfo.symbuf = NULL; - finfo.symshndxbuf = NULL; - finfo.symbuf_count = 0; - - /* Count up the number of relocations we will output for each output - section, so that we know the sizes of the reloc sections. We - also figure out some maximum sizes. */ - max_contents_size = 0; - max_external_reloc_size = 0; - max_internal_reloc_count = 0; - max_sym_count = 0; - max_sym_shndx_count = 0; - merged = false; - for (o = abfd->sections; o != (asection *) NULL; o = o->next) - { - o->reloc_count = 0; - - for (p = o->link_order_head; p != NULL; p = p->next) - { - if (p->type == bfd_section_reloc_link_order - || p->type == bfd_symbol_reloc_link_order) - ++o->reloc_count; - else if (p->type == bfd_indirect_link_order) - { - asection *sec; - - sec = p->u.indirect.section; - - /* Mark all sections which are to be included in the - link. This will normally be every section. We need - to do this so that we can identify any sections which - the linker has decided to not include. */ - sec->linker_mark = true; - - if (sec->flags & SEC_MERGE) - merged = true; - - if (info->relocateable || info->emitrelocations) - o->reloc_count += sec->reloc_count; - else if (bed->elf_backend_count_relocs) - { - Elf_Internal_Rela * relocs; - - relocs = (NAME(_bfd_elf,link_read_relocs) - (abfd, sec, (PTR) NULL, - (Elf_Internal_Rela *) NULL, info->keep_memory)); - - o->reloc_count - += (*bed->elf_backend_count_relocs) (sec, relocs); - - if (!info->keep_memory) - free (relocs); - } - - if (sec->_raw_size > max_contents_size) - max_contents_size = sec->_raw_size; - if (sec->_cooked_size > max_contents_size) - max_contents_size = sec->_cooked_size; - - /* We are interested in just local symbols, not all - symbols. */ - if (bfd_get_flavour (sec->owner) == bfd_target_elf_flavour - && (sec->owner->flags & DYNAMIC) == 0) - { - size_t sym_count; - - if (elf_bad_symtab (sec->owner)) - sym_count = (elf_tdata (sec->owner)->symtab_hdr.sh_size - / sizeof (Elf_External_Sym)); - else - sym_count = elf_tdata (sec->owner)->symtab_hdr.sh_info; - - if (sym_count > max_sym_count) - max_sym_count = sym_count; - - if (sym_count > max_sym_shndx_count - && elf_symtab_shndx (sec->owner) != 0) - max_sym_shndx_count = sym_count; - - if ((sec->flags & SEC_RELOC) != 0) - { - size_t ext_size; - - ext_size = elf_section_data (sec)->rel_hdr.sh_size; - if (ext_size > max_external_reloc_size) - max_external_reloc_size = ext_size; - if (sec->reloc_count > max_internal_reloc_count) - max_internal_reloc_count = sec->reloc_count; - } - } - } - } - - if (o->reloc_count > 0) - o->flags |= SEC_RELOC; - else - { - /* Explicitly clear the SEC_RELOC flag. The linker tends to - set it (this is probably a bug) and if it is set - assign_section_numbers will create a reloc section. */ - o->flags &=~ SEC_RELOC; - } - - /* If the SEC_ALLOC flag is not set, force the section VMA to - zero. This is done in elf_fake_sections as well, but forcing - the VMA to 0 here will ensure that relocs against these - sections are handled correctly. */ - if ((o->flags & SEC_ALLOC) == 0 - && ! o->user_set_vma) - o->vma = 0; - } - - if (! info->relocateable && merged) - elf_link_hash_traverse (elf_hash_table (info), - elf_link_sec_merge_syms, (PTR) abfd); - - /* Figure out the file positions for everything but the symbol table - and the relocs. We set symcount to force assign_section_numbers - to create a symbol table. */ - bfd_get_symcount (abfd) = info->strip == strip_all ? 0 : 1; - BFD_ASSERT (! abfd->output_has_begun); - if (! _bfd_elf_compute_section_file_positions (abfd, info)) - goto error_return; - - /* Figure out how many relocations we will have in each section. - Just using RELOC_COUNT isn't good enough since that doesn't - maintain a separate value for REL vs. RELA relocations. */ - if (emit_relocs) - for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) - for (o = sub->sections; o != NULL; o = o->next) - { - asection *output_section; - - if (! o->linker_mark) - { - /* This section was omitted from the link. */ - continue; - } - - output_section = o->output_section; - - if (output_section != NULL - && (o->flags & SEC_RELOC) != 0) - { - struct bfd_elf_section_data *esdi - = elf_section_data (o); - struct bfd_elf_section_data *esdo - = elf_section_data (output_section); - unsigned int *rel_count; - unsigned int *rel_count2; - bfd_size_type entsize; - bfd_size_type entsize2; - - /* We must be careful to add the relocations from the - input section to the right output count. */ - entsize = esdi->rel_hdr.sh_entsize; - entsize2 = esdi->rel_hdr2 ? esdi->rel_hdr2->sh_entsize : 0; - BFD_ASSERT ((entsize == sizeof (Elf_External_Rel) - || entsize == sizeof (Elf_External_Rela)) - && entsize2 != entsize - && (entsize2 == 0 - || entsize2 == sizeof (Elf_External_Rel) - || entsize2 == sizeof (Elf_External_Rela))); - if (entsize == esdo->rel_hdr.sh_entsize) - { - rel_count = &esdo->rel_count; - rel_count2 = &esdo->rel_count2; - } - else - { - rel_count = &esdo->rel_count2; - rel_count2 = &esdo->rel_count; - } - - *rel_count += NUM_SHDR_ENTRIES (& esdi->rel_hdr); - if (esdi->rel_hdr2) - *rel_count2 += NUM_SHDR_ENTRIES (esdi->rel_hdr2); - output_section->flags |= SEC_RELOC; - } - } - - /* That created the reloc sections. Set their sizes, and assign - them file positions, and allocate some buffers. */ - for (o = abfd->sections; o != NULL; o = o->next) - { - if ((o->flags & SEC_RELOC) != 0) - { - if (!elf_link_size_reloc_section (abfd, - &elf_section_data (o)->rel_hdr, - o)) - goto error_return; - - if (elf_section_data (o)->rel_hdr2 - && !elf_link_size_reloc_section (abfd, - elf_section_data (o)->rel_hdr2, - o)) - goto error_return; - } - - /* Now, reset REL_COUNT and REL_COUNT2 so that we can use them - to count upwards while actually outputting the relocations. */ - elf_section_data (o)->rel_count = 0; - elf_section_data (o)->rel_count2 = 0; - } - - _bfd_elf_assign_file_positions_for_relocs (abfd); - - /* We have now assigned file positions for all the sections except - .symtab and .strtab. We start the .symtab section at the current - file position, and write directly to it. We build the .strtab - section in memory. */ - bfd_get_symcount (abfd) = 0; - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - /* sh_name is set in prep_headers. */ - symtab_hdr->sh_type = SHT_SYMTAB; - symtab_hdr->sh_flags = 0; - symtab_hdr->sh_addr = 0; - symtab_hdr->sh_size = 0; - symtab_hdr->sh_entsize = sizeof (Elf_External_Sym); - /* sh_link is set in assign_section_numbers. */ - /* sh_info is set below. */ - /* sh_offset is set just below. */ - symtab_hdr->sh_addralign = bed->s->file_align; - - off = elf_tdata (abfd)->next_file_pos; - off = _bfd_elf_assign_file_position_for_section (symtab_hdr, off, true); - - /* Note that at this point elf_tdata (abfd)->next_file_pos is - incorrect. We do not yet know the size of the .symtab section. - We correct next_file_pos below, after we do know the size. */ - - /* Allocate a buffer to hold swapped out symbols. This is to avoid - continuously seeking to the right position in the file. */ - if (! info->keep_memory || max_sym_count < 20) - finfo.symbuf_size = 20; - else - finfo.symbuf_size = max_sym_count; - amt = finfo.symbuf_size; - amt *= sizeof (Elf_External_Sym); - finfo.symbuf = (Elf_External_Sym *) bfd_malloc (amt); - if (finfo.symbuf == NULL) - goto error_return; - if (elf_numsections (abfd) > SHN_LORESERVE) - { - amt = finfo.symbuf_size; - amt *= sizeof (Elf_External_Sym_Shndx); - finfo.symshndxbuf = (Elf_External_Sym_Shndx *) bfd_malloc (amt); - if (finfo.symshndxbuf == NULL) - goto error_return; - } - - /* Start writing out the symbol table. The first symbol is always a - dummy symbol. */ - if (info->strip != strip_all - || emit_relocs) - { - elfsym.st_value = 0; - elfsym.st_size = 0; - elfsym.st_info = 0; - elfsym.st_other = 0; - elfsym.st_shndx = SHN_UNDEF; - if (! elf_link_output_sym (&finfo, (const char *) NULL, - &elfsym, bfd_und_section_ptr)) - goto error_return; - } - -#if 0 - /* Some standard ELF linkers do this, but we don't because it causes - bootstrap comparison failures. */ - /* Output a file symbol for the output file as the second symbol. - We output this even if we are discarding local symbols, although - I'm not sure if this is correct. */ - elfsym.st_value = 0; - elfsym.st_size = 0; - elfsym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE); - elfsym.st_other = 0; - elfsym.st_shndx = SHN_ABS; - if (! elf_link_output_sym (&finfo, bfd_get_filename (abfd), - &elfsym, bfd_abs_section_ptr)) - goto error_return; -#endif - - /* Output a symbol for each section. We output these even if we are - discarding local symbols, since they are used for relocs. These - symbols have no names. We store the index of each one in the - index field of the section, so that we can find it again when - outputting relocs. */ - if (info->strip != strip_all - || emit_relocs) - { - elfsym.st_size = 0; - elfsym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); - elfsym.st_other = 0; - for (i = 1; i < elf_numsections (abfd); i++) - { - o = section_from_elf_index (abfd, i); - if (o != NULL) - o->target_index = bfd_get_symcount (abfd); - elfsym.st_shndx = i; - if (info->relocateable || o == NULL) - elfsym.st_value = 0; - else - elfsym.st_value = o->vma; - if (! elf_link_output_sym (&finfo, (const char *) NULL, - &elfsym, o)) - goto error_return; - if (i == SHN_LORESERVE) - i += SHN_HIRESERVE + 1 - SHN_LORESERVE; - } - } - - /* Allocate some memory to hold information read in from the input - files. */ - if (max_contents_size != 0) - { - finfo.contents = (bfd_byte *) bfd_malloc (max_contents_size); - if (finfo.contents == NULL) - goto error_return; - } - - if (max_external_reloc_size != 0) - { - finfo.external_relocs = (PTR) bfd_malloc (max_external_reloc_size); - if (finfo.external_relocs == NULL) - goto error_return; - } - - if (max_internal_reloc_count != 0) - { - amt = max_internal_reloc_count * bed->s->int_rels_per_ext_rel; - amt *= sizeof (Elf_Internal_Rela); - finfo.internal_relocs = (Elf_Internal_Rela *) bfd_malloc (amt); - if (finfo.internal_relocs == NULL) - goto error_return; - } - - if (max_sym_count != 0) - { - amt = max_sym_count * sizeof (Elf_External_Sym); - finfo.external_syms = (Elf_External_Sym *) bfd_malloc (amt); - if (finfo.external_syms == NULL) - goto error_return; - - amt = max_sym_count * sizeof (Elf_Internal_Sym); - finfo.internal_syms = (Elf_Internal_Sym *) bfd_malloc (amt); - if (finfo.internal_syms == NULL) - goto error_return; - - amt = max_sym_count * sizeof (long); - finfo.indices = (long *) bfd_malloc (amt); - if (finfo.indices == NULL) - goto error_return; - - amt = max_sym_count * sizeof (asection *); - finfo.sections = (asection **) bfd_malloc (amt); - if (finfo.sections == NULL) - goto error_return; - } - - if (max_sym_shndx_count != 0) - { - amt = max_sym_shndx_count * sizeof (Elf_External_Sym_Shndx); - finfo.locsym_shndx = (Elf_External_Sym_Shndx *) bfd_malloc (amt); - if (finfo.locsym_shndx == NULL) - goto error_return; - } - - /* Since ELF permits relocations to be against local symbols, we - must have the local symbols available when we do the relocations. - Since we would rather only read the local symbols once, and we - would rather not keep them in memory, we handle all the - relocations for a single input file at the same time. - - Unfortunately, there is no way to know the total number of local - symbols until we have seen all of them, and the local symbol - indices precede the global symbol indices. This means that when - we are generating relocateable output, and we see a reloc against - a global symbol, we can not know the symbol index until we have - finished examining all the local symbols to see which ones we are - going to output. To deal with this, we keep the relocations in - memory, and don't output them until the end of the link. This is - an unfortunate waste of memory, but I don't see a good way around - it. Fortunately, it only happens when performing a relocateable - link, which is not the common case. FIXME: If keep_memory is set - we could write the relocs out and then read them again; I don't - know how bad the memory loss will be. */ - - for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) - sub->output_has_begun = false; - for (o = abfd->sections; o != NULL; o = o->next) - { - for (p = o->link_order_head; p != NULL; p = p->next) - { - if (p->type == bfd_indirect_link_order - && (bfd_get_flavour ((sub = p->u.indirect.section->owner)) - == bfd_target_elf_flavour) - && elf_elfheader (sub)->e_ident[EI_CLASS] == bed->s->elfclass) - { - if (! sub->output_has_begun) - { - if (! elf_link_input_bfd (&finfo, sub)) - goto error_return; - sub->output_has_begun = true; - } - } - else if (p->type == bfd_section_reloc_link_order - || p->type == bfd_symbol_reloc_link_order) - { - if (! elf_reloc_link_order (abfd, info, o, p)) - goto error_return; - } - else - { - if (! _bfd_default_link_order (abfd, info, o, p)) - goto error_return; - } - } - } - - /* Output any global symbols that got converted to local in a - version script or due to symbol visibility. We do this in a - separate step since ELF requires all local symbols to appear - prior to any global symbols. FIXME: We should only do this if - some global symbols were, in fact, converted to become local. - FIXME: Will this work correctly with the Irix 5 linker? */ - eoinfo.failed = false; - eoinfo.finfo = &finfo; - eoinfo.localsyms = true; - elf_link_hash_traverse (elf_hash_table (info), elf_link_output_extsym, - (PTR) &eoinfo); - if (eoinfo.failed) - return false; - - /* That wrote out all the local symbols. Finish up the symbol table - with the global symbols. Even if we want to strip everything we - can, we still need to deal with those global symbols that got - converted to local in a version script. */ - - /* The sh_info field records the index of the first non local symbol. */ - symtab_hdr->sh_info = bfd_get_symcount (abfd); - - if (dynamic - && finfo.dynsym_sec->output_section != bfd_abs_section_ptr) - { - Elf_Internal_Sym sym; - Elf_External_Sym *dynsym = - (Elf_External_Sym *) finfo.dynsym_sec->contents; - long last_local = 0; - - /* Write out the section symbols for the output sections. */ - if (info->shared) - { - asection *s; - - sym.st_size = 0; - sym.st_name = 0; - sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); - sym.st_other = 0; - - for (s = abfd->sections; s != NULL; s = s->next) - { - int indx; - Elf_External_Sym *dest; - - indx = elf_section_data (s)->this_idx; - BFD_ASSERT (indx > 0); - sym.st_shndx = indx; - sym.st_value = s->vma; - dest = dynsym + elf_section_data (s)->dynindx; - elf_swap_symbol_out (abfd, &sym, (PTR) dest, (PTR) 0); - } - - last_local = bfd_count_sections (abfd); - } - - /* Write out the local dynsyms. */ - if (elf_hash_table (info)->dynlocal) - { - struct elf_link_local_dynamic_entry *e; - for (e = elf_hash_table (info)->dynlocal; e ; e = e->next) - { - asection *s; - Elf_External_Sym *dest; - - sym.st_size = e->isym.st_size; - sym.st_other = e->isym.st_other; - - /* Copy the internal symbol as is. - Note that we saved a word of storage and overwrote - the original st_name with the dynstr_index. */ - sym = e->isym; - - if (e->isym.st_shndx != SHN_UNDEF - && (e->isym.st_shndx < SHN_LORESERVE - || e->isym.st_shndx > SHN_HIRESERVE)) - { - s = bfd_section_from_elf_index (e->input_bfd, - e->isym.st_shndx); - - sym.st_shndx = - elf_section_data (s->output_section)->this_idx; - sym.st_value = (s->output_section->vma - + s->output_offset - + e->isym.st_value); - } - - if (last_local < e->dynindx) - last_local = e->dynindx; - - dest = dynsym + e->dynindx; - elf_swap_symbol_out (abfd, &sym, (PTR) dest, (PTR) 0); - } - } - - elf_section_data (finfo.dynsym_sec->output_section)->this_hdr.sh_info = - last_local + 1; - } - - /* We get the global symbols from the hash table. */ - eoinfo.failed = false; - eoinfo.localsyms = false; - eoinfo.finfo = &finfo; - elf_link_hash_traverse (elf_hash_table (info), elf_link_output_extsym, - (PTR) &eoinfo); - if (eoinfo.failed) - return false; - - /* If backend needs to output some symbols not present in the hash - table, do it now. */ - if (bed->elf_backend_output_arch_syms) - { - typedef boolean (*out_sym_func) PARAMS ((PTR, const char *, - Elf_Internal_Sym *, - asection *)); - - if (! ((*bed->elf_backend_output_arch_syms) - (abfd, info, (PTR) &finfo, (out_sym_func) elf_link_output_sym))) - return false; - } - - /* Flush all symbols to the file. */ - if (! elf_link_flush_output_syms (&finfo)) - return false; - - /* Now we know the size of the symtab section. */ - off += symtab_hdr->sh_size; - - /* Finish up and write out the symbol string table (.strtab) - section. */ - symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr; - /* sh_name was set in prep_headers. */ - symstrtab_hdr->sh_type = SHT_STRTAB; - symstrtab_hdr->sh_flags = 0; - symstrtab_hdr->sh_addr = 0; - symstrtab_hdr->sh_size = _bfd_stringtab_size (finfo.symstrtab); - symstrtab_hdr->sh_entsize = 0; - symstrtab_hdr->sh_link = 0; - symstrtab_hdr->sh_info = 0; - /* sh_offset is set just below. */ - symstrtab_hdr->sh_addralign = 1; - - off = _bfd_elf_assign_file_position_for_section (symstrtab_hdr, off, true); - elf_tdata (abfd)->next_file_pos = off; - - if (bfd_get_symcount (abfd) > 0) - { - if (bfd_seek (abfd, symstrtab_hdr->sh_offset, SEEK_SET) != 0 - || ! _bfd_stringtab_emit (abfd, finfo.symstrtab)) - return false; - } - - /* Adjust the relocs to have the correct symbol indices. */ - for (o = abfd->sections; o != NULL; o = o->next) - { - if ((o->flags & SEC_RELOC) == 0) - continue; - - elf_link_adjust_relocs (abfd, &elf_section_data (o)->rel_hdr, - elf_section_data (o)->rel_count, - elf_section_data (o)->rel_hashes); - if (elf_section_data (o)->rel_hdr2 != NULL) - elf_link_adjust_relocs (abfd, elf_section_data (o)->rel_hdr2, - elf_section_data (o)->rel_count2, - (elf_section_data (o)->rel_hashes - + elf_section_data (o)->rel_count)); - - /* Set the reloc_count field to 0 to prevent write_relocs from - trying to swap the relocs out itself. */ - o->reloc_count = 0; - } - - if (dynamic && info->combreloc && dynobj != NULL) - relativecount = elf_link_sort_relocs (abfd, info, &reldyn); - - /* If we are linking against a dynamic object, or generating a - shared library, finish up the dynamic linking information. */ - if (dynamic) - { - Elf_External_Dyn *dyncon, *dynconend; - - /* Fix up .dynamic entries. */ - o = bfd_get_section_by_name (dynobj, ".dynamic"); - BFD_ASSERT (o != NULL); - - dyncon = (Elf_External_Dyn *) o->contents; - dynconend = (Elf_External_Dyn *) (o->contents + o->_raw_size); - for (; dyncon < dynconend; dyncon++) - { - Elf_Internal_Dyn dyn; - const char *name; - unsigned int type; - - elf_swap_dyn_in (dynobj, dyncon, &dyn); - - switch (dyn.d_tag) - { - default: - break; - case DT_NULL: - if (relativecount > 0 && dyncon + 1 < dynconend) - { - switch (elf_section_data (reldyn)->this_hdr.sh_type) - { - case SHT_REL: dyn.d_tag = DT_RELCOUNT; break; - case SHT_RELA: dyn.d_tag = DT_RELACOUNT; break; - default: break; - } - if (dyn.d_tag != DT_NULL) - { - dyn.d_un.d_val = relativecount; - elf_swap_dyn_out (dynobj, &dyn, dyncon); - relativecount = 0; - } - } - break; - case DT_INIT: - name = info->init_function; - goto get_sym; - case DT_FINI: - name = info->fini_function; - get_sym: - { - struct elf_link_hash_entry *h; - - h = elf_link_hash_lookup (elf_hash_table (info), name, - false, false, true); - if (h != NULL - && (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak)) - { - dyn.d_un.d_val = h->root.u.def.value; - o = h->root.u.def.section; - if (o->output_section != NULL) - dyn.d_un.d_val += (o->output_section->vma - + o->output_offset); - else - { - /* The symbol is imported from another shared - library and does not apply to this one. */ - dyn.d_un.d_val = 0; - } - - elf_swap_dyn_out (dynobj, &dyn, dyncon); - } - } - break; - - case DT_PREINIT_ARRAYSZ: - name = ".preinit_array"; - goto get_size; - case DT_INIT_ARRAYSZ: - name = ".init_array"; - goto get_size; - case DT_FINI_ARRAYSZ: - name = ".fini_array"; - get_size: - o = bfd_get_section_by_name (abfd, name); - BFD_ASSERT (o != NULL); - if (o->_raw_size == 0) - (*_bfd_error_handler) - (_("warning: %s section has zero size"), name); - dyn.d_un.d_val = o->_raw_size; - elf_swap_dyn_out (dynobj, &dyn, dyncon); - break; - - case DT_PREINIT_ARRAY: - name = ".preinit_array"; - goto get_vma; - case DT_INIT_ARRAY: - name = ".init_array"; - goto get_vma; - case DT_FINI_ARRAY: - name = ".fini_array"; - goto get_vma; - - case DT_HASH: - name = ".hash"; - goto get_vma; - case DT_STRTAB: - name = ".dynstr"; - goto get_vma; - case DT_SYMTAB: - name = ".dynsym"; - goto get_vma; - case DT_VERDEF: - name = ".gnu.version_d"; - goto get_vma; - case DT_VERNEED: - name = ".gnu.version_r"; - goto get_vma; - case DT_VERSYM: - name = ".gnu.version"; - get_vma: - o = bfd_get_section_by_name (abfd, name); - BFD_ASSERT (o != NULL); - dyn.d_un.d_ptr = o->vma; - elf_swap_dyn_out (dynobj, &dyn, dyncon); - break; - - case DT_REL: - case DT_RELA: - case DT_RELSZ: - case DT_RELASZ: - if (dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ) - type = SHT_REL; - else - type = SHT_RELA; - dyn.d_un.d_val = 0; - for (i = 1; i < elf_numsections (abfd); i++) - { - Elf_Internal_Shdr *hdr; - - hdr = elf_elfsections (abfd)[i]; - if (hdr->sh_type == type - && (hdr->sh_flags & SHF_ALLOC) != 0) - { - if (dyn.d_tag == DT_RELSZ || dyn.d_tag == DT_RELASZ) - dyn.d_un.d_val += hdr->sh_size; - else - { - if (dyn.d_un.d_val == 0 - || hdr->sh_addr < dyn.d_un.d_val) - dyn.d_un.d_val = hdr->sh_addr; - } - } - } - elf_swap_dyn_out (dynobj, &dyn, dyncon); - break; - } - } - } - - /* If we have created any dynamic sections, then output them. */ - if (dynobj != NULL) - { - if (! (*bed->elf_backend_finish_dynamic_sections) (abfd, info)) - goto error_return; - - for (o = dynobj->sections; o != NULL; o = o->next) - { - if ((o->flags & SEC_HAS_CONTENTS) == 0 - || o->_raw_size == 0 - || o->output_section == bfd_abs_section_ptr) - continue; - if ((o->flags & SEC_LINKER_CREATED) == 0) - { - /* At this point, we are only interested in sections - created by elf_link_create_dynamic_sections. */ - continue; - } - if ((elf_section_data (o->output_section)->this_hdr.sh_type - != SHT_STRTAB) - || strcmp (bfd_get_section_name (abfd, o), ".dynstr") != 0) - { - if (! bfd_set_section_contents (abfd, o->output_section, - o->contents, - (file_ptr) o->output_offset, - o->_raw_size)) - goto error_return; - } - else - { - /* The contents of the .dynstr section are actually in a - stringtab. */ - off = elf_section_data (o->output_section)->this_hdr.sh_offset; - if (bfd_seek (abfd, off, SEEK_SET) != 0 - || ! _bfd_elf_strtab_emit (abfd, - elf_hash_table (info)->dynstr)) - goto error_return; - } - } - } - - /* If we have optimized stabs strings, output them. */ - if (elf_hash_table (info)->stab_info != NULL) - { - if (! _bfd_write_stab_strings (abfd, &elf_hash_table (info)->stab_info)) - goto error_return; - } - - if (info->eh_frame_hdr && elf_hash_table (info)->dynobj) - { - o = bfd_get_section_by_name (elf_hash_table (info)->dynobj, - ".eh_frame_hdr"); - if (o - && (elf_section_data (o)->sec_info_type - == ELF_INFO_TYPE_EH_FRAME_HDR)) - { - if (! _bfd_elf_write_section_eh_frame_hdr (abfd, o)) - goto error_return; - } - } - - if (finfo.symstrtab != NULL) - _bfd_stringtab_free (finfo.symstrtab); - if (finfo.contents != NULL) - free (finfo.contents); - if (finfo.external_relocs != NULL) - free (finfo.external_relocs); - if (finfo.internal_relocs != NULL) - free (finfo.internal_relocs); - if (finfo.external_syms != NULL) - free (finfo.external_syms); - if (finfo.locsym_shndx != NULL) - free (finfo.locsym_shndx); - if (finfo.internal_syms != NULL) - free (finfo.internal_syms); - if (finfo.indices != NULL) - free (finfo.indices); - if (finfo.sections != NULL) - free (finfo.sections); - if (finfo.symbuf != NULL) - free (finfo.symbuf); - if (finfo.symshndxbuf != NULL) - free (finfo.symbuf); - for (o = abfd->sections; o != NULL; o = o->next) - { - if ((o->flags & SEC_RELOC) != 0 - && elf_section_data (o)->rel_hashes != NULL) - free (elf_section_data (o)->rel_hashes); - } - - elf_tdata (abfd)->linker = true; - - return true; - - error_return: - if (finfo.symstrtab != NULL) - _bfd_stringtab_free (finfo.symstrtab); - if (finfo.contents != NULL) - free (finfo.contents); - if (finfo.external_relocs != NULL) - free (finfo.external_relocs); - if (finfo.internal_relocs != NULL) - free (finfo.internal_relocs); - if (finfo.external_syms != NULL) - free (finfo.external_syms); - if (finfo.locsym_shndx != NULL) - free (finfo.locsym_shndx); - if (finfo.internal_syms != NULL) - free (finfo.internal_syms); - if (finfo.indices != NULL) - free (finfo.indices); - if (finfo.sections != NULL) - free (finfo.sections); - if (finfo.symbuf != NULL) - free (finfo.symbuf); - if (finfo.symshndxbuf != NULL) - free (finfo.symbuf); - for (o = abfd->sections; o != NULL; o = o->next) - { - if ((o->flags & SEC_RELOC) != 0 - && elf_section_data (o)->rel_hashes != NULL) - free (elf_section_data (o)->rel_hashes); - } - - return false; -} - -/* Add a symbol to the output symbol table. */ - -static boolean -elf_link_output_sym (finfo, name, elfsym, input_sec) - struct elf_final_link_info *finfo; - const char *name; - Elf_Internal_Sym *elfsym; - asection *input_sec; -{ - Elf_External_Sym *dest; - Elf_External_Sym_Shndx *destshndx; - - boolean (*output_symbol_hook) PARAMS ((bfd *, - struct bfd_link_info *info, - const char *, - Elf_Internal_Sym *, - asection *)); - - output_symbol_hook = get_elf_backend_data (finfo->output_bfd)-> - elf_backend_link_output_symbol_hook; - if (output_symbol_hook != NULL) - { - if (! ((*output_symbol_hook) - (finfo->output_bfd, finfo->info, name, elfsym, input_sec))) - return false; - } - - if (name == (const char *) NULL || *name == '\0') - elfsym->st_name = 0; - else if (input_sec->flags & SEC_EXCLUDE) - elfsym->st_name = 0; - else - { - elfsym->st_name = (unsigned long) _bfd_stringtab_add (finfo->symstrtab, - name, true, false); - if (elfsym->st_name == (unsigned long) -1) - return false; - } - - if (finfo->symbuf_count >= finfo->symbuf_size) - { - if (! elf_link_flush_output_syms (finfo)) - return false; - } - - dest = finfo->symbuf + finfo->symbuf_count; - destshndx = finfo->symshndxbuf; - if (destshndx != NULL) - destshndx += finfo->symbuf_count; - elf_swap_symbol_out (finfo->output_bfd, elfsym, (PTR) dest, (PTR) destshndx); - ++finfo->symbuf_count; - - ++ bfd_get_symcount (finfo->output_bfd); - - return true; -} - -/* Flush the output symbols to the file. */ - -static boolean -elf_link_flush_output_syms (finfo) - struct elf_final_link_info *finfo; -{ - if (finfo->symbuf_count > 0) - { - Elf_Internal_Shdr *hdr; - file_ptr pos; - bfd_size_type amt; - - hdr = &elf_tdata (finfo->output_bfd)->symtab_hdr; - pos = hdr->sh_offset + hdr->sh_size; - amt = finfo->symbuf_count * sizeof (Elf_External_Sym); - if (bfd_seek (finfo->output_bfd, pos, SEEK_SET) != 0 - || bfd_bwrite ((PTR) finfo->symbuf, amt, finfo->output_bfd) != amt) - return false; - - hdr->sh_size += amt; - - if (finfo->symshndxbuf != NULL) - { - hdr = &elf_tdata (finfo->output_bfd)->symtab_shndx_hdr; - pos = hdr->sh_offset + hdr->sh_size; - amt = finfo->symbuf_count * sizeof (Elf_External_Sym_Shndx); - if (bfd_seek (finfo->output_bfd, pos, SEEK_SET) != 0 - || (bfd_bwrite ((PTR) finfo->symshndxbuf, amt, finfo->output_bfd) - != amt)) - return false; - - hdr->sh_size += amt; - } - - finfo->symbuf_count = 0; - } - - return true; -} - -/* Adjust all external symbols pointing into SEC_MERGE sections - to reflect the object merging within the sections. */ - -static boolean -elf_link_sec_merge_syms (h, data) - struct elf_link_hash_entry *h; - PTR data; -{ - asection *sec; - - if (h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - - if ((h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - && ((sec = h->root.u.def.section)->flags & SEC_MERGE) - && elf_section_data (sec)->sec_info_type == ELF_INFO_TYPE_MERGE) - { - bfd *output_bfd = (bfd *) data; - - h->root.u.def.value = - _bfd_merged_section_offset (output_bfd, - &h->root.u.def.section, - elf_section_data (sec)->sec_info, - h->root.u.def.value, (bfd_vma) 0); - } - - return true; -} - -/* Add an external symbol to the symbol table. This is called from - the hash table traversal routine. When generating a shared object, - we go through the symbol table twice. The first time we output - anything that might have been forced to local scope in a version - script. The second time we output the symbols that are still - global symbols. */ - -static boolean -elf_link_output_extsym (h, data) - struct elf_link_hash_entry *h; - PTR data; -{ - struct elf_outext_info *eoinfo = (struct elf_outext_info *) data; - struct elf_final_link_info *finfo = eoinfo->finfo; - boolean strip; - Elf_Internal_Sym sym; - asection *input_sec; - - if (h->root.type == bfd_link_hash_warning) - { - h = (struct elf_link_hash_entry *) h->root.u.i.link; - if (h->root.type == bfd_link_hash_new) - return true; - } - - /* Decide whether to output this symbol in this pass. */ - if (eoinfo->localsyms) - { - if ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) - return true; - } - else - { - if ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0) - return true; - } - - /* If we are not creating a shared library, and this symbol is - referenced by a shared library but is not defined anywhere, then - warn that it is undefined. If we do not do this, the runtime - linker will complain that the symbol is undefined when the - program is run. We don't have to worry about symbols that are - referenced by regular files, because we will already have issued - warnings for them. */ - if (! finfo->info->relocateable - && ! finfo->info->allow_shlib_undefined - && ! finfo->info->shared - && h->root.type == bfd_link_hash_undefined - && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0 - && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0) - { - if (! ((*finfo->info->callbacks->undefined_symbol) - (finfo->info, h->root.root.string, h->root.u.undef.abfd, - (asection *) NULL, (bfd_vma) 0, true))) - { - eoinfo->failed = true; - return false; - } - } - - /* We don't want to output symbols that have never been mentioned by - a regular file, or that we have been told to strip. However, if - h->indx is set to -2, the symbol is used by a reloc and we must - output it. */ - if (h->indx == -2) - strip = false; - else if (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 - || (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0) - && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 - && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0) - strip = true; - else if (finfo->info->strip == strip_all - || (finfo->info->strip == strip_some - && bfd_hash_lookup (finfo->info->keep_hash, - h->root.root.string, - false, false) == NULL)) - strip = true; - else - strip = false; - - /* If we're stripping it, and it's not a dynamic symbol, there's - nothing else to do unless it is a forced local symbol. */ - if (strip - && h->dynindx == -1 - && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) - return true; - - sym.st_value = 0; - sym.st_size = h->size; - sym.st_other = h->other; - if ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0) - sym.st_info = ELF_ST_INFO (STB_LOCAL, h->type); - else if (h->root.type == bfd_link_hash_undefweak - || h->root.type == bfd_link_hash_defweak) - sym.st_info = ELF_ST_INFO (STB_WEAK, h->type); - else - sym.st_info = ELF_ST_INFO (STB_GLOBAL, h->type); - - switch (h->root.type) - { - default: - case bfd_link_hash_new: - case bfd_link_hash_warning: - abort (); - return false; - - case bfd_link_hash_undefined: - case bfd_link_hash_undefweak: - input_sec = bfd_und_section_ptr; - sym.st_shndx = SHN_UNDEF; - break; - - case bfd_link_hash_defined: - case bfd_link_hash_defweak: - { - input_sec = h->root.u.def.section; - if (input_sec->output_section != NULL) - { - sym.st_shndx = - _bfd_elf_section_from_bfd_section (finfo->output_bfd, - input_sec->output_section); - if (sym.st_shndx == SHN_BAD) - { - (*_bfd_error_handler) - (_("%s: could not find output section %s for input section %s"), - bfd_get_filename (finfo->output_bfd), - input_sec->output_section->name, - input_sec->name); - eoinfo->failed = true; - return false; - } - - /* ELF symbols in relocateable files are section relative, - but in nonrelocateable files they are virtual - addresses. */ - sym.st_value = h->root.u.def.value + input_sec->output_offset; - if (! finfo->info->relocateable) - sym.st_value += input_sec->output_section->vma; - } - else - { - BFD_ASSERT (input_sec->owner == NULL - || (input_sec->owner->flags & DYNAMIC) != 0); - sym.st_shndx = SHN_UNDEF; - input_sec = bfd_und_section_ptr; - } - } - break; - - case bfd_link_hash_common: - input_sec = h->root.u.c.p->section; - sym.st_shndx = SHN_COMMON; - sym.st_value = 1 << h->root.u.c.p->alignment_power; - break; - - case bfd_link_hash_indirect: - /* These symbols are created by symbol versioning. They point - to the decorated version of the name. For example, if the - symbol foo@@GNU_1.2 is the default, which should be used when - foo is used with no version, then we add an indirect symbol - foo which points to foo@@GNU_1.2. We ignore these symbols, - since the indirected symbol is already in the hash table. */ - return true; - } - - /* Give the processor backend a chance to tweak the symbol value, - and also to finish up anything that needs to be done for this - symbol. FIXME: Not calling elf_backend_finish_dynamic_symbol for - forced local syms when non-shared is due to a historical quirk. */ - if ((h->dynindx != -1 - || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0) - && (finfo->info->shared - || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) - && elf_hash_table (finfo->info)->dynamic_sections_created) - { - struct elf_backend_data *bed; - - bed = get_elf_backend_data (finfo->output_bfd); - if (! ((*bed->elf_backend_finish_dynamic_symbol) - (finfo->output_bfd, finfo->info, h, &sym))) - { - eoinfo->failed = true; - return false; - } - } - - /* If we are marking the symbol as undefined, and there are no - non-weak references to this symbol from a regular object, then - mark the symbol as weak undefined; if there are non-weak - references, mark the symbol as strong. We can't do this earlier, - because it might not be marked as undefined until the - finish_dynamic_symbol routine gets through with it. */ - if (sym.st_shndx == SHN_UNDEF - && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) != 0 - && (ELF_ST_BIND (sym.st_info) == STB_GLOBAL - || ELF_ST_BIND (sym.st_info) == STB_WEAK)) - { - int bindtype; - - if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK) != 0) - bindtype = STB_GLOBAL; - else - bindtype = STB_WEAK; - sym.st_info = ELF_ST_INFO (bindtype, ELF_ST_TYPE (sym.st_info)); - } - - /* If a symbol is not defined locally, we clear the visibility - field. */ - if (! finfo->info->relocateable - && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) - sym.st_other ^= ELF_ST_VISIBILITY (sym.st_other); - - /* If this symbol should be put in the .dynsym section, then put it - there now. We have already know the symbol index. We also fill - in the entry in the .hash section. */ - if (h->dynindx != -1 - && elf_hash_table (finfo->info)->dynamic_sections_created) - { - size_t bucketcount; - size_t bucket; - size_t hash_entry_size; - bfd_byte *bucketpos; - bfd_vma chain; - Elf_External_Sym *esym; - - sym.st_name = h->dynstr_index; - esym = (Elf_External_Sym *) finfo->dynsym_sec->contents + h->dynindx; - elf_swap_symbol_out (finfo->output_bfd, &sym, (PTR) esym, (PTR) 0); - - bucketcount = elf_hash_table (finfo->info)->bucketcount; - bucket = h->elf_hash_value % bucketcount; - hash_entry_size - = elf_section_data (finfo->hash_sec)->this_hdr.sh_entsize; - bucketpos = ((bfd_byte *) finfo->hash_sec->contents - + (bucket + 2) * hash_entry_size); - chain = bfd_get (8 * hash_entry_size, finfo->output_bfd, bucketpos); - bfd_put (8 * hash_entry_size, finfo->output_bfd, (bfd_vma) h->dynindx, - bucketpos); - bfd_put (8 * hash_entry_size, finfo->output_bfd, chain, - ((bfd_byte *) finfo->hash_sec->contents - + (bucketcount + 2 + h->dynindx) * hash_entry_size)); - - if (finfo->symver_sec != NULL && finfo->symver_sec->contents != NULL) - { - Elf_Internal_Versym iversym; - Elf_External_Versym *eversym; - - if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) - { - if (h->verinfo.verdef == NULL) - iversym.vs_vers = 0; - else - iversym.vs_vers = h->verinfo.verdef->vd_exp_refno + 1; - } - else - { - if (h->verinfo.vertree == NULL) - iversym.vs_vers = 1; - else - iversym.vs_vers = h->verinfo.vertree->vernum + 1; - } - - if ((h->elf_link_hash_flags & ELF_LINK_HIDDEN) != 0) - iversym.vs_vers |= VERSYM_HIDDEN; - - eversym = (Elf_External_Versym *) finfo->symver_sec->contents; - eversym += h->dynindx; - _bfd_elf_swap_versym_out (finfo->output_bfd, &iversym, eversym); - } - } - - /* If we're stripping it, then it was just a dynamic symbol, and - there's nothing else to do. */ - if (strip) - return true; - - h->indx = bfd_get_symcount (finfo->output_bfd); - - if (! elf_link_output_sym (finfo, h->root.root.string, &sym, input_sec)) - { - eoinfo->failed = true; - return false; - } - - return true; -} - -/* Copy the relocations indicated by the INTERNAL_RELOCS (which - originated from the section given by INPUT_REL_HDR) to the - OUTPUT_BFD. */ - -static void -elf_link_output_relocs (output_bfd, input_section, input_rel_hdr, - internal_relocs) - bfd *output_bfd; - asection *input_section; - Elf_Internal_Shdr *input_rel_hdr; - Elf_Internal_Rela *internal_relocs; -{ - Elf_Internal_Rela *irela; - Elf_Internal_Rela *irelaend; - Elf_Internal_Shdr *output_rel_hdr; - asection *output_section; - unsigned int *rel_countp = NULL; - struct elf_backend_data *bed; - bfd_size_type amt; - - output_section = input_section->output_section; - output_rel_hdr = NULL; - - if (elf_section_data (output_section)->rel_hdr.sh_entsize - == input_rel_hdr->sh_entsize) - { - output_rel_hdr = &elf_section_data (output_section)->rel_hdr; - rel_countp = &elf_section_data (output_section)->rel_count; - } - else if (elf_section_data (output_section)->rel_hdr2 - && (elf_section_data (output_section)->rel_hdr2->sh_entsize - == input_rel_hdr->sh_entsize)) - { - output_rel_hdr = elf_section_data (output_section)->rel_hdr2; - rel_countp = &elf_section_data (output_section)->rel_count2; - } - - BFD_ASSERT (output_rel_hdr != NULL); - - bed = get_elf_backend_data (output_bfd); - irela = internal_relocs; - irelaend = irela + NUM_SHDR_ENTRIES (input_rel_hdr) - * bed->s->int_rels_per_ext_rel; - - if (input_rel_hdr->sh_entsize == sizeof (Elf_External_Rel)) - { - Elf_External_Rel *erel; - Elf_Internal_Rel *irel; - - amt = bed->s->int_rels_per_ext_rel * sizeof (Elf_Internal_Rel); - irel = (Elf_Internal_Rel *) bfd_zmalloc (amt); - if (irel == NULL) - { - (*_bfd_error_handler) (_("Error: out of memory")); - abort (); - } - - erel = ((Elf_External_Rel *) output_rel_hdr->contents + *rel_countp); - for (; irela < irelaend; irela += bed->s->int_rels_per_ext_rel, erel++) - { - unsigned int i; - - for (i = 0; i < bed->s->int_rels_per_ext_rel; i++) - { - irel[i].r_offset = irela[i].r_offset; - irel[i].r_info = irela[i].r_info; - BFD_ASSERT (irela[i].r_addend == 0); - } - - if (bed->s->swap_reloc_out) - (*bed->s->swap_reloc_out) (output_bfd, irel, (PTR) erel); - else - elf_swap_reloc_out (output_bfd, irel, erel); - } - - free (irel); - } - else - { - Elf_External_Rela *erela; - - BFD_ASSERT (input_rel_hdr->sh_entsize == sizeof (Elf_External_Rela)); - - erela = ((Elf_External_Rela *) output_rel_hdr->contents + *rel_countp); - for (; irela < irelaend; irela += bed->s->int_rels_per_ext_rel, erela++) - if (bed->s->swap_reloca_out) - (*bed->s->swap_reloca_out) (output_bfd, irela, (PTR) erela); - else - elf_swap_reloca_out (output_bfd, irela, erela); - } - - /* Bump the counter, so that we know where to add the next set of - relocations. */ - *rel_countp += NUM_SHDR_ENTRIES (input_rel_hdr); -} - -/* Link an input file into the linker output file. This function - handles all the sections and relocations of the input file at once. - This is so that we only have to read the local symbols once, and - don't have to keep them in memory. */ - -static boolean -elf_link_input_bfd (finfo, input_bfd) - struct elf_final_link_info *finfo; - bfd *input_bfd; -{ - boolean (*relocate_section) PARAMS ((bfd *, struct bfd_link_info *, - bfd *, asection *, bfd_byte *, - Elf_Internal_Rela *, - Elf_Internal_Sym *, asection **)); - bfd *output_bfd; - Elf_Internal_Shdr *symtab_hdr; - Elf_Internal_Shdr *shndx_hdr; - size_t locsymcount; - size_t extsymoff; - Elf_External_Sym *external_syms; - Elf_External_Sym *esym; - Elf_External_Sym *esymend; - Elf_External_Sym_Shndx *shndx_buf; - Elf_External_Sym_Shndx *shndx; - Elf_Internal_Sym *isym; - long *pindex; - asection **ppsection; - asection *o; - struct elf_backend_data *bed; - boolean emit_relocs; - struct elf_link_hash_entry **sym_hashes; - - output_bfd = finfo->output_bfd; - bed = get_elf_backend_data (output_bfd); - relocate_section = bed->elf_backend_relocate_section; - - /* If this is a dynamic object, we don't want to do anything here: - we don't want the local symbols, and we don't want the section - contents. */ - if ((input_bfd->flags & DYNAMIC) != 0) - return true; - - emit_relocs = (finfo->info->relocateable - || finfo->info->emitrelocations - || bed->elf_backend_emit_relocs); - - symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; - if (elf_bad_symtab (input_bfd)) - { - locsymcount = symtab_hdr->sh_size / sizeof (Elf_External_Sym); - extsymoff = 0; - } - else - { - locsymcount = symtab_hdr->sh_info; - extsymoff = symtab_hdr->sh_info; - } - - /* Read the local symbols. */ - if (symtab_hdr->contents != NULL) - external_syms = (Elf_External_Sym *) symtab_hdr->contents; - else if (locsymcount == 0) - external_syms = NULL; - else - { - bfd_size_type amt = locsymcount * sizeof (Elf_External_Sym); - external_syms = finfo->external_syms; - if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0 - || bfd_bread (external_syms, amt, input_bfd) != amt) - return false; - } - - shndx_hdr = &elf_tdata (input_bfd)->symtab_shndx_hdr; - shndx_buf = NULL; - if (shndx_hdr->sh_size != 0 && locsymcount != 0) - { - bfd_size_type amt = locsymcount * sizeof (Elf_External_Sym_Shndx); - shndx_buf = finfo->locsym_shndx; - if (bfd_seek (input_bfd, shndx_hdr->sh_offset, SEEK_SET) != 0 - || bfd_bread (shndx_buf, amt, input_bfd) != amt) - return false; - } - - /* Swap in the local symbols and write out the ones which we know - are going into the output file. */ - for (esym = external_syms, esymend = esym + locsymcount, - isym = finfo->internal_syms, pindex = finfo->indices, - ppsection = finfo->sections, shndx = shndx_buf; - esym < esymend; - esym++, isym++, pindex++, ppsection++, - shndx = (shndx != NULL ? shndx + 1 : NULL)) - { - asection *isec; - const char *name; - Elf_Internal_Sym osym; - - elf_swap_symbol_in (input_bfd, esym, shndx, isym); - *pindex = -1; - - if (elf_bad_symtab (input_bfd)) - { - if (ELF_ST_BIND (isym->st_info) != STB_LOCAL) - { - *ppsection = NULL; - continue; - } - } - - if (isym->st_shndx == SHN_UNDEF) - isec = bfd_und_section_ptr; - else if (isym->st_shndx < SHN_LORESERVE - || isym->st_shndx > SHN_HIRESERVE) - { - isec = section_from_elf_index (input_bfd, isym->st_shndx); - if (isec - && elf_section_data (isec)->sec_info_type == ELF_INFO_TYPE_MERGE - && ELF_ST_TYPE (isym->st_info) != STT_SECTION) - isym->st_value = - _bfd_merged_section_offset (output_bfd, &isec, - elf_section_data (isec)->sec_info, - isym->st_value, (bfd_vma) 0); - } - else if (isym->st_shndx == SHN_ABS) - isec = bfd_abs_section_ptr; - else if (isym->st_shndx == SHN_COMMON) - isec = bfd_com_section_ptr; - else - { - /* Who knows? */ - isec = NULL; - } - - *ppsection = isec; - - /* Don't output the first, undefined, symbol. */ - if (esym == external_syms) - continue; - - if (ELF_ST_TYPE (isym->st_info) == STT_SECTION) - { - /* We never output section symbols. Instead, we use the - section symbol of the corresponding section in the output - file. */ - continue; - } - - /* If we are stripping all symbols, we don't want to output this - one. */ - if (finfo->info->strip == strip_all) - continue; - - /* If we are discarding all local symbols, we don't want to - output this one. If we are generating a relocateable output - file, then some of the local symbols may be required by - relocs; we output them below as we discover that they are - needed. */ - if (finfo->info->discard == discard_all) - continue; - - /* If this symbol is defined in a section which we are - discarding, we don't need to keep it, but note that - linker_mark is only reliable for sections that have contents. - For the benefit of the MIPS ELF linker, we check SEC_EXCLUDE - as well as linker_mark. */ - if ((isym->st_shndx < SHN_LORESERVE || isym->st_shndx > SHN_HIRESERVE) - && isec != NULL - && ((! isec->linker_mark && (isec->flags & SEC_HAS_CONTENTS) != 0) - || (! finfo->info->relocateable - && (isec->flags & SEC_EXCLUDE) != 0))) - continue; - - /* Get the name of the symbol. */ - name = bfd_elf_string_from_elf_section (input_bfd, symtab_hdr->sh_link, - isym->st_name); - if (name == NULL) - return false; - - /* See if we are discarding symbols with this name. */ - if ((finfo->info->strip == strip_some - && (bfd_hash_lookup (finfo->info->keep_hash, name, false, false) - == NULL)) - || (((finfo->info->discard == discard_sec_merge - && (isec->flags & SEC_MERGE) && ! finfo->info->relocateable) - || finfo->info->discard == discard_l) - && bfd_is_local_label_name (input_bfd, name))) - continue; - - /* If we get here, we are going to output this symbol. */ - - osym = *isym; - - /* Adjust the section index for the output file. */ - osym.st_shndx = _bfd_elf_section_from_bfd_section (output_bfd, - isec->output_section); - if (osym.st_shndx == SHN_BAD) - return false; - - *pindex = bfd_get_symcount (output_bfd); - - /* ELF symbols in relocateable files are section relative, but - in executable files they are virtual addresses. Note that - this code assumes that all ELF sections have an associated - BFD section with a reasonable value for output_offset; below - we assume that they also have a reasonable value for - output_section. Any special sections must be set up to meet - these requirements. */ - osym.st_value += isec->output_offset; - if (! finfo->info->relocateable) - osym.st_value += isec->output_section->vma; - - if (! elf_link_output_sym (finfo, name, &osym, isec)) - return false; - } - - /* Relocate the contents of each section. */ - sym_hashes = elf_sym_hashes (input_bfd); - for (o = input_bfd->sections; o != NULL; o = o->next) - { - bfd_byte *contents; - - if (! o->linker_mark) - { - /* This section was omitted from the link. */ - continue; - } - - if ((o->flags & SEC_HAS_CONTENTS) == 0 - || (o->_raw_size == 0 && (o->flags & SEC_RELOC) == 0)) - continue; - - if ((o->flags & SEC_LINKER_CREATED) != 0) - { - /* Section was created by elf_link_create_dynamic_sections - or somesuch. */ - continue; - } - - /* Get the contents of the section. They have been cached by a - relaxation routine. Note that o is a section in an input - file, so the contents field will not have been set by any of - the routines which work on output files. */ - if (elf_section_data (o)->this_hdr.contents != NULL) - contents = elf_section_data (o)->this_hdr.contents; - else - { - contents = finfo->contents; - if (! bfd_get_section_contents (input_bfd, o, contents, - (file_ptr) 0, o->_raw_size)) - return false; - } - - if ((o->flags & SEC_RELOC) != 0) - { - Elf_Internal_Rela *internal_relocs; - - /* Get the swapped relocs. */ - internal_relocs = (NAME(_bfd_elf,link_read_relocs) - (input_bfd, o, finfo->external_relocs, - finfo->internal_relocs, false)); - if (internal_relocs == NULL - && o->reloc_count > 0) - return false; - - /* Run through the relocs looking for any against symbols - from discarded sections and section symbols from - removed link-once sections. Complain about relocs - against discarded sections. Zero relocs against removed - link-once sections. We should really complain if - anything in the final link tries to use it, but - DWARF-based exception handling might have an entry in - .eh_frame to describe a routine in the linkonce section, - and it turns out to be hard to remove the .eh_frame - entry too. FIXME. */ - if (!finfo->info->relocateable - && !elf_section_ignore_discarded_relocs (o)) - { - Elf_Internal_Rela *rel, *relend; - - rel = internal_relocs; - relend = rel + o->reloc_count * bed->s->int_rels_per_ext_rel; - for ( ; rel < relend; rel++) - { - unsigned long r_symndx = ELF_R_SYM (rel->r_info); - - if (r_symndx >= locsymcount - || (elf_bad_symtab (input_bfd) - && finfo->sections[r_symndx] == NULL)) - { - struct elf_link_hash_entry *h; - - h = sym_hashes[r_symndx - extsymoff]; - while (h->root.type == bfd_link_hash_indirect - || h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - - /* Complain if the definition comes from a - discarded section. */ - if ((h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - && elf_discarded_section (h->root.u.def.section)) - { -#if BFD_VERSION_DATE < 20031005 - if ((o->flags & SEC_DEBUGGING) != 0) - { -#if BFD_VERSION_DATE > 20021005 - (*finfo->info->callbacks->warning) - (finfo->info, - _("warning: relocation against removed section; zeroing"), - NULL, input_bfd, o, rel->r_offset); -#endif - BFD_ASSERT (r_symndx != 0); - memset (rel, 0, sizeof (*rel)); - } - else -#endif - { - if (! ((*finfo->info->callbacks->undefined_symbol) - (finfo->info, h->root.root.string, - input_bfd, o, rel->r_offset, - true))) - return false; - } - } - } - else - { - asection *sec = finfo->sections[r_symndx]; - - if (sec != NULL && elf_discarded_section (sec)) - { -#if BFD_VERSION_DATE < 20031005 - if ((o->flags & SEC_DEBUGGING) != 0 - || (sec->flags & SEC_LINK_ONCE) != 0) - { -#if BFD_VERSION_DATE > 20021005 - (*finfo->info->callbacks->warning) - (finfo->info, - _("warning: relocation against removed section"), - NULL, input_bfd, o, rel->r_offset); -#endif - BFD_ASSERT (r_symndx != 0); - rel->r_info - = ELF_R_INFO (0, ELF_R_TYPE (rel->r_info)); - rel->r_addend = 0; - } - else -#endif - { - boolean ok; - const char *msg - = _("local symbols in discarded section %s"); - bfd_size_type amt - = strlen (sec->name) + strlen (msg) - 1; - char *buf = (char *) bfd_malloc (amt); - - if (buf != NULL) - sprintf (buf, msg, sec->name); - else - buf = (char *) sec->name; - ok = (*finfo->info->callbacks - ->undefined_symbol) (finfo->info, buf, - input_bfd, o, - rel->r_offset, - true); - if (buf != sec->name) - free (buf); - if (!ok) - return false; - } - } - } - } - } - - /* Relocate the section by invoking a back end routine. - - The back end routine is responsible for adjusting the - section contents as necessary, and (if using Rela relocs - and generating a relocateable output file) adjusting the - reloc addend as necessary. - - The back end routine does not have to worry about setting - the reloc address or the reloc symbol index. - - The back end routine is given a pointer to the swapped in - internal symbols, and can access the hash table entries - for the external symbols via elf_sym_hashes (input_bfd). - - When generating relocateable output, the back end routine - must handle STB_LOCAL/STT_SECTION symbols specially. The - output symbol is going to be a section symbol - corresponding to the output section, which will require - the addend to be adjusted. */ - - if (! (*relocate_section) (output_bfd, finfo->info, - input_bfd, o, contents, - internal_relocs, - finfo->internal_syms, - finfo->sections)) - return false; - - if (emit_relocs) - { - Elf_Internal_Rela *irela; - Elf_Internal_Rela *irelaend; - struct elf_link_hash_entry **rel_hash; - Elf_Internal_Shdr *input_rel_hdr; - unsigned int next_erel; - void (*reloc_emitter) PARAMS ((bfd *, asection *, - Elf_Internal_Shdr *, - Elf_Internal_Rela *)); - boolean rela_normal; - - input_rel_hdr = &elf_section_data (o)->rel_hdr; - rela_normal = (bed->rela_normal - && (input_rel_hdr->sh_entsize - == sizeof (Elf_External_Rela))); - - /* Adjust the reloc addresses and symbol indices. */ - - irela = internal_relocs; - irelaend = irela + o->reloc_count * bed->s->int_rels_per_ext_rel; - rel_hash = (elf_section_data (o->output_section)->rel_hashes - + elf_section_data (o->output_section)->rel_count - + elf_section_data (o->output_section)->rel_count2); - for (next_erel = 0; irela < irelaend; irela++, next_erel++) - { - unsigned long r_symndx; - asection *sec; - - if (next_erel == bed->s->int_rels_per_ext_rel) - { - rel_hash++; - next_erel = 0; - } - - irela->r_offset += o->output_offset; - - /* Relocs in an executable have to be virtual addresses. */ - if (!finfo->info->relocateable) - irela->r_offset += o->output_section->vma; - - r_symndx = ELF_R_SYM (irela->r_info); - - if (r_symndx == 0) - continue; - - if (r_symndx >= locsymcount - || (elf_bad_symtab (input_bfd) - && finfo->sections[r_symndx] == NULL)) - { - struct elf_link_hash_entry *rh; - unsigned long indx; - - /* This is a reloc against a global symbol. We - have not yet output all the local symbols, so - we do not know the symbol index of any global - symbol. We set the rel_hash entry for this - reloc to point to the global hash table entry - for this symbol. The symbol index is then - set at the end of elf_bfd_final_link. */ - indx = r_symndx - extsymoff; - rh = elf_sym_hashes (input_bfd)[indx]; - while (rh->root.type == bfd_link_hash_indirect - || rh->root.type == bfd_link_hash_warning) - rh = (struct elf_link_hash_entry *) rh->root.u.i.link; - - /* Setting the index to -2 tells - elf_link_output_extsym that this symbol is - used by a reloc. */ - BFD_ASSERT (rh->indx < 0); - rh->indx = -2; - - *rel_hash = rh; - - continue; - } - - /* This is a reloc against a local symbol. */ - - *rel_hash = NULL; - isym = finfo->internal_syms + r_symndx; - sec = finfo->sections[r_symndx]; - if (ELF_ST_TYPE (isym->st_info) == STT_SECTION) - { - /* I suppose the backend ought to fill in the - section of any STT_SECTION symbol against a - processor specific section. If we have - discarded a section, the output_section will - be the absolute section. */ - if (bfd_is_abs_section (sec) - || (sec != NULL - && bfd_is_abs_section (sec->output_section))) - r_symndx = 0; - else if (sec == NULL || sec->owner == NULL) - { - bfd_set_error (bfd_error_bad_value); - return false; - } - else - { - r_symndx = sec->output_section->target_index; - BFD_ASSERT (r_symndx != 0); - } - - /* Adjust the addend according to where the - section winds up in the output section. */ - if (rela_normal) - irela->r_addend += sec->output_offset; - } - else - { - if (finfo->indices[r_symndx] == -1) - { - unsigned long shlink; - const char *name; - asection *osec; - - if (finfo->info->strip == strip_all) - { - /* You can't do ld -r -s. */ - bfd_set_error (bfd_error_invalid_operation); - return false; - } - - /* This symbol was skipped earlier, but - since it is needed by a reloc, we - must output it now. */ - shlink = symtab_hdr->sh_link; - name = (bfd_elf_string_from_elf_section - (input_bfd, shlink, isym->st_name)); - if (name == NULL) - return false; - - osec = sec->output_section; - isym->st_shndx = - _bfd_elf_section_from_bfd_section (output_bfd, - osec); - if (isym->st_shndx == SHN_BAD) - return false; - - isym->st_value += sec->output_offset; - if (! finfo->info->relocateable) - isym->st_value += osec->vma; - - finfo->indices[r_symndx] - = bfd_get_symcount (output_bfd); - - if (! elf_link_output_sym (finfo, name, isym, sec)) - return false; - } - - r_symndx = finfo->indices[r_symndx]; - } - - irela->r_info = ELF_R_INFO (r_symndx, - ELF_R_TYPE (irela->r_info)); - } - - /* Swap out the relocs. */ - if (bed->elf_backend_emit_relocs - && !(finfo->info->relocateable - || finfo->info->emitrelocations)) - reloc_emitter = bed->elf_backend_emit_relocs; - else - reloc_emitter = elf_link_output_relocs; - - (*reloc_emitter) (output_bfd, o, input_rel_hdr, internal_relocs); - - input_rel_hdr = elf_section_data (o)->rel_hdr2; - if (input_rel_hdr) - { - internal_relocs += (NUM_SHDR_ENTRIES (input_rel_hdr) - * bed->s->int_rels_per_ext_rel); - (*reloc_emitter) (output_bfd, o, input_rel_hdr, - internal_relocs); - } - - } - } - - /* Write out the modified section contents. */ - if (bed->elf_backend_write_section - && (*bed->elf_backend_write_section) (output_bfd, o, contents)) - { - /* Section written out. */ - } - else switch (elf_section_data (o)->sec_info_type) - { - case ELF_INFO_TYPE_STABS: - if (! (_bfd_write_section_stabs - (output_bfd, - &elf_hash_table (finfo->info)->stab_info, - o, &elf_section_data (o)->sec_info, contents))) - return false; - break; - case ELF_INFO_TYPE_MERGE: - if (! (_bfd_write_merged_section - (output_bfd, o, elf_section_data (o)->sec_info))) - return false; - break; - case ELF_INFO_TYPE_EH_FRAME: - { - asection *ehdrsec; - - ehdrsec - = bfd_get_section_by_name (elf_hash_table (finfo->info)->dynobj, - ".eh_frame_hdr"); - if (! (_bfd_elf_write_section_eh_frame (output_bfd, o, ehdrsec, - contents))) - return false; - } - break; - default: - { - bfd_size_type sec_size; - - sec_size = (o->_cooked_size != 0 ? o->_cooked_size : o->_raw_size); - if (! (o->flags & SEC_EXCLUDE) - && ! bfd_set_section_contents (output_bfd, o->output_section, - contents, - (file_ptr) o->output_offset, - sec_size)) - return false; - } - break; - } - } - - return true; -} - -/* Generate a reloc when linking an ELF file. This is a reloc - requested by the linker, and does come from any input file. This - is used to build constructor and destructor tables when linking - with -Ur. */ - -static boolean -elf_reloc_link_order (output_bfd, info, output_section, link_order) - bfd *output_bfd; - struct bfd_link_info *info; - asection *output_section; - struct bfd_link_order *link_order; -{ - reloc_howto_type *howto; - long indx; - bfd_vma offset; - bfd_vma addend; - struct elf_link_hash_entry **rel_hash_ptr; - Elf_Internal_Shdr *rel_hdr; - struct elf_backend_data *bed = get_elf_backend_data (output_bfd); - - howto = bfd_reloc_type_lookup (output_bfd, link_order->u.reloc.p->reloc); - if (howto == NULL) - { - bfd_set_error (bfd_error_bad_value); - return false; - } - - addend = link_order->u.reloc.p->addend; - - /* Figure out the symbol index. */ - rel_hash_ptr = (elf_section_data (output_section)->rel_hashes - + elf_section_data (output_section)->rel_count - + elf_section_data (output_section)->rel_count2); - if (link_order->type == bfd_section_reloc_link_order) - { - indx = link_order->u.reloc.p->u.section->target_index; - BFD_ASSERT (indx != 0); - *rel_hash_ptr = NULL; - } - else - { - struct elf_link_hash_entry *h; - - /* Treat a reloc against a defined symbol as though it were - actually against the section. */ - h = ((struct elf_link_hash_entry *) - bfd_wrapped_link_hash_lookup (output_bfd, info, - link_order->u.reloc.p->u.name, - false, false, true)); - if (h != NULL - && (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak)) - { - asection *section; - - section = h->root.u.def.section; - indx = section->output_section->target_index; - *rel_hash_ptr = NULL; - /* It seems that we ought to add the symbol value to the - addend here, but in practice it has already been added - because it was passed to constructor_callback. */ - addend += section->output_section->vma + section->output_offset; - } - else if (h != NULL) - { - /* Setting the index to -2 tells elf_link_output_extsym that - this symbol is used by a reloc. */ - h->indx = -2; - *rel_hash_ptr = h; - indx = 0; - } - else - { - if (! ((*info->callbacks->unattached_reloc) - (info, link_order->u.reloc.p->u.name, (bfd *) NULL, - (asection *) NULL, (bfd_vma) 0))) - return false; - indx = 0; - } - } - - /* If this is an inplace reloc, we must write the addend into the - object file. */ - if (howto->partial_inplace && addend != 0) - { - bfd_size_type size; - bfd_reloc_status_type rstat; - bfd_byte *buf; - boolean ok; - const char *sym_name; - - size = bfd_get_reloc_size (howto); - buf = (bfd_byte *) bfd_zmalloc (size); - if (buf == (bfd_byte *) NULL) - return false; - rstat = _bfd_relocate_contents (howto, output_bfd, (bfd_vma) addend, buf); - switch (rstat) - { - case bfd_reloc_ok: - break; - - default: - case bfd_reloc_outofrange: - abort (); - - case bfd_reloc_overflow: - if (link_order->type == bfd_section_reloc_link_order) - sym_name = bfd_section_name (output_bfd, - link_order->u.reloc.p->u.section); - else - sym_name = link_order->u.reloc.p->u.name; - if (! ((*info->callbacks->reloc_overflow) - (info, sym_name, howto->name, addend, - (bfd *) NULL, (asection *) NULL, (bfd_vma) 0))) - { - free (buf); - return false; - } - break; - } - ok = bfd_set_section_contents (output_bfd, output_section, (PTR) buf, - (file_ptr) link_order->offset, size); - free (buf); - if (! ok) - return false; - } - - /* The address of a reloc is relative to the section in a - relocateable file, and is a virtual address in an executable - file. */ - offset = link_order->offset; - if (! info->relocateable) - offset += output_section->vma; - - rel_hdr = &elf_section_data (output_section)->rel_hdr; - - if (rel_hdr->sh_type == SHT_REL) - { - bfd_size_type size; - Elf_Internal_Rel *irel; - Elf_External_Rel *erel; - unsigned int i; - - size = bed->s->int_rels_per_ext_rel * sizeof (Elf_Internal_Rel); - irel = (Elf_Internal_Rel *) bfd_zmalloc (size); - if (irel == NULL) - return false; - - for (i = 0; i < bed->s->int_rels_per_ext_rel; i++) - irel[i].r_offset = offset; - irel[0].r_info = ELF_R_INFO (indx, howto->type); - - erel = ((Elf_External_Rel *) rel_hdr->contents - + elf_section_data (output_section)->rel_count); - - if (bed->s->swap_reloc_out) - (*bed->s->swap_reloc_out) (output_bfd, irel, (bfd_byte *) erel); - else - elf_swap_reloc_out (output_bfd, irel, erel); - - free (irel); - } - else - { - bfd_size_type size; - Elf_Internal_Rela *irela; - Elf_External_Rela *erela; - unsigned int i; - - size = bed->s->int_rels_per_ext_rel * sizeof (Elf_Internal_Rela); - irela = (Elf_Internal_Rela *) bfd_zmalloc (size); - if (irela == NULL) - return false; - - for (i = 0; i < bed->s->int_rels_per_ext_rel; i++) - irela[i].r_offset = offset; - irela[0].r_info = ELF_R_INFO (indx, howto->type); - irela[0].r_addend = addend; - - erela = ((Elf_External_Rela *) rel_hdr->contents - + elf_section_data (output_section)->rel_count); - - if (bed->s->swap_reloca_out) - (*bed->s->swap_reloca_out) (output_bfd, irela, (bfd_byte *) erela); - else - elf_swap_reloca_out (output_bfd, irela, erela); - } - - ++elf_section_data (output_section)->rel_count; - - return true; -} - -/* Allocate a pointer to live in a linker created section. */ - -boolean -elf_create_pointer_linker_section (abfd, info, lsect, h, rel) - bfd *abfd; - struct bfd_link_info *info; - elf_linker_section_t *lsect; - struct elf_link_hash_entry *h; - const Elf_Internal_Rela *rel; -{ - elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL; - elf_linker_section_pointers_t *linker_section_ptr; - unsigned long r_symndx = ELF_R_SYM (rel->r_info); - bfd_size_type amt; - - BFD_ASSERT (lsect != NULL); - - /* Is this a global symbol? */ - if (h != NULL) - { - /* Has this symbol already been allocated? If so, our work is done. */ - if (_bfd_elf_find_pointer_linker_section (h->linker_section_pointer, - rel->r_addend, - lsect->which)) - return true; - - ptr_linker_section_ptr = &h->linker_section_pointer; - /* Make sure this symbol is output as a dynamic symbol. */ - if (h->dynindx == -1) - { - if (! elf_link_record_dynamic_symbol (info, h)) - return false; - } - - if (lsect->rel_section) - lsect->rel_section->_raw_size += sizeof (Elf_External_Rela); - } - else - { - /* Allocation of a pointer to a local symbol. */ - elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd); - - /* Allocate a table to hold the local symbols if first time. */ - if (!ptr) - { - unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info; - register unsigned int i; - - amt = num_symbols; - amt *= sizeof (elf_linker_section_pointers_t *); - ptr = (elf_linker_section_pointers_t **) bfd_alloc (abfd, amt); - - if (!ptr) - return false; - - elf_local_ptr_offsets (abfd) = ptr; - for (i = 0; i < num_symbols; i++) - ptr[i] = (elf_linker_section_pointers_t *) 0; - } - - /* Has this symbol already been allocated? If so, our work is done. */ - if (_bfd_elf_find_pointer_linker_section (ptr[r_symndx], - rel->r_addend, - lsect->which)) - return true; - - ptr_linker_section_ptr = &ptr[r_symndx]; - - if (info->shared) - { - /* If we are generating a shared object, we need to - output a R_<xxx>_RELATIVE reloc so that the - dynamic linker can adjust this GOT entry. */ - BFD_ASSERT (lsect->rel_section != NULL); - lsect->rel_section->_raw_size += sizeof (Elf_External_Rela); - } - } - - /* Allocate space for a pointer in the linker section, and allocate - a new pointer record from internal memory. */ - BFD_ASSERT (ptr_linker_section_ptr != NULL); - amt = sizeof (elf_linker_section_pointers_t); - linker_section_ptr = (elf_linker_section_pointers_t *) bfd_alloc (abfd, amt); - - if (!linker_section_ptr) - return false; - - linker_section_ptr->next = *ptr_linker_section_ptr; - linker_section_ptr->addend = rel->r_addend; - linker_section_ptr->which = lsect->which; - linker_section_ptr->written_address_p = false; - *ptr_linker_section_ptr = linker_section_ptr; - -#if 0 - if (lsect->hole_size && lsect->hole_offset < lsect->max_hole_offset) - { - linker_section_ptr->offset = (lsect->section->_raw_size - - lsect->hole_size + (ARCH_SIZE / 8)); - lsect->hole_offset += ARCH_SIZE / 8; - lsect->sym_offset += ARCH_SIZE / 8; - if (lsect->sym_hash) - { - /* Bump up symbol value if needed. */ - lsect->sym_hash->root.u.def.value += ARCH_SIZE / 8; -#ifdef DEBUG - fprintf (stderr, "Bump up %s by %ld, current value = %ld\n", - lsect->sym_hash->root.root.string, - (long) ARCH_SIZE / 8, - (long) lsect->sym_hash->root.u.def.value); -#endif - } - } - else -#endif - linker_section_ptr->offset = lsect->section->_raw_size; - - lsect->section->_raw_size += ARCH_SIZE / 8; - -#ifdef DEBUG - fprintf (stderr, - "Create pointer in linker section %s, offset = %ld, section size = %ld\n", - lsect->name, (long) linker_section_ptr->offset, - (long) lsect->section->_raw_size); -#endif - - return true; -} - -#if ARCH_SIZE==64 -#define bfd_put_ptr(BFD,VAL,ADDR) bfd_put_64 (BFD, VAL, ADDR) -#endif -#if ARCH_SIZE==32 -#define bfd_put_ptr(BFD,VAL,ADDR) bfd_put_32 (BFD, VAL, ADDR) -#endif - -/* Fill in the address for a pointer generated in a linker section. */ - -bfd_vma -elf_finish_pointer_linker_section (output_bfd, input_bfd, info, lsect, h, - relocation, rel, relative_reloc) - bfd *output_bfd; - bfd *input_bfd; - struct bfd_link_info *info; - elf_linker_section_t *lsect; - struct elf_link_hash_entry *h; - bfd_vma relocation; - const Elf_Internal_Rela *rel; - int relative_reloc; -{ - elf_linker_section_pointers_t *linker_section_ptr; - - BFD_ASSERT (lsect != NULL); - - if (h != NULL) - { - /* Handle global symbol. */ - linker_section_ptr = (_bfd_elf_find_pointer_linker_section - (h->linker_section_pointer, - rel->r_addend, - lsect->which)); - - BFD_ASSERT (linker_section_ptr != NULL); - - if (! elf_hash_table (info)->dynamic_sections_created - || (info->shared - && info->symbolic - && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) - { - /* This is actually a static link, or it is a - -Bsymbolic link and the symbol is defined - locally. We must initialize this entry in the - global section. - - When doing a dynamic link, we create a .rela.<xxx> - relocation entry to initialize the value. This - is done in the finish_dynamic_symbol routine. */ - if (!linker_section_ptr->written_address_p) - { - linker_section_ptr->written_address_p = true; - bfd_put_ptr (output_bfd, - relocation + linker_section_ptr->addend, - (lsect->section->contents - + linker_section_ptr->offset)); - } - } - } - else - { - /* Handle local symbol. */ - unsigned long r_symndx = ELF_R_SYM (rel->r_info); - BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL); - BFD_ASSERT (elf_local_ptr_offsets (input_bfd)[r_symndx] != NULL); - linker_section_ptr = (_bfd_elf_find_pointer_linker_section - (elf_local_ptr_offsets (input_bfd)[r_symndx], - rel->r_addend, - lsect->which)); - - BFD_ASSERT (linker_section_ptr != NULL); - - /* Write out pointer if it hasn't been rewritten out before. */ - if (!linker_section_ptr->written_address_p) - { - linker_section_ptr->written_address_p = true; - bfd_put_ptr (output_bfd, relocation + linker_section_ptr->addend, - lsect->section->contents + linker_section_ptr->offset); - - if (info->shared) - { - asection *srel = lsect->rel_section; - Elf_Internal_Rela *outrel; - Elf_External_Rela *erel; - struct elf_backend_data *bed = get_elf_backend_data (output_bfd); - unsigned int i; - bfd_size_type amt; - - amt = sizeof (Elf_Internal_Rela) * bed->s->int_rels_per_ext_rel; - outrel = (Elf_Internal_Rela *) bfd_zmalloc (amt); - if (outrel == NULL) - { - (*_bfd_error_handler) (_("Error: out of memory")); - return 0; - } - - /* We need to generate a relative reloc for the dynamic - linker. */ - if (!srel) - { - srel = bfd_get_section_by_name (elf_hash_table (info)->dynobj, - lsect->rel_name); - lsect->rel_section = srel; - } - - BFD_ASSERT (srel != NULL); - - for (i = 0; i < bed->s->int_rels_per_ext_rel; i++) - outrel[i].r_offset = (lsect->section->output_section->vma - + lsect->section->output_offset - + linker_section_ptr->offset); - outrel[0].r_info = ELF_R_INFO (0, relative_reloc); - outrel[0].r_addend = 0; - erel = (Elf_External_Rela *) lsect->section->contents; - erel += elf_section_data (lsect->section)->rel_count; - elf_swap_reloca_out (output_bfd, outrel, erel); - ++elf_section_data (lsect->section)->rel_count; - - free (outrel); - } - } - } - - relocation = (lsect->section->output_offset - + linker_section_ptr->offset - - lsect->hole_offset - - lsect->sym_offset); - -#ifdef DEBUG - fprintf (stderr, - "Finish pointer in linker section %s, offset = %ld (0x%lx)\n", - lsect->name, (long) relocation, (long) relocation); -#endif - - /* Subtract out the addend, because it will get added back in by the normal - processing. */ - return relocation - linker_section_ptr->addend; -} - -/* Garbage collect unused sections. */ - -static boolean elf_gc_mark - PARAMS ((struct bfd_link_info *info, asection *sec, - asection * (*gc_mark_hook) - PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *, - struct elf_link_hash_entry *, Elf_Internal_Sym *)))); - -static boolean elf_gc_sweep - PARAMS ((struct bfd_link_info *info, - boolean (*gc_sweep_hook) - PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *o, - const Elf_Internal_Rela *relocs)))); - -static boolean elf_gc_sweep_symbol - PARAMS ((struct elf_link_hash_entry *h, PTR idxptr)); - -static boolean elf_gc_allocate_got_offsets - PARAMS ((struct elf_link_hash_entry *h, PTR offarg)); - -static boolean elf_gc_propagate_vtable_entries_used - PARAMS ((struct elf_link_hash_entry *h, PTR dummy)); - -static boolean elf_gc_smash_unused_vtentry_relocs - PARAMS ((struct elf_link_hash_entry *h, PTR dummy)); - -/* The mark phase of garbage collection. For a given section, mark - it and any sections in this section's group, and all the sections - which define symbols to which it refers. */ - -static boolean -elf_gc_mark (info, sec, gc_mark_hook) - struct bfd_link_info *info; - asection *sec; - asection * (*gc_mark_hook) - PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *, - struct elf_link_hash_entry *, Elf_Internal_Sym *)); -{ - boolean ret; - asection *group_sec; - - sec->gc_mark = 1; - - /* Mark all the sections in the group. */ - group_sec = elf_section_data (sec)->next_in_group; - if (group_sec && !group_sec->gc_mark) - if (!elf_gc_mark (info, group_sec, gc_mark_hook)) - return false; - - /* Look through the section relocs. */ - ret = true; - if ((sec->flags & SEC_RELOC) != 0 && sec->reloc_count > 0) - { - Elf_Internal_Rela *relstart, *rel, *relend; - Elf_Internal_Shdr *symtab_hdr; - Elf_Internal_Shdr *shndx_hdr; - struct elf_link_hash_entry **sym_hashes; - size_t nlocsyms; - size_t extsymoff; - Elf_External_Sym *locsyms, *freesyms = NULL; - Elf_External_Sym_Shndx *locsym_shndx; - bfd *input_bfd = sec->owner; - struct elf_backend_data *bed = get_elf_backend_data (input_bfd); - - /* GCFIXME: how to arrange so that relocs and symbols are not - reread continually? */ - - symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (input_bfd); - - /* Read the local symbols. */ - if (elf_bad_symtab (input_bfd)) - { - nlocsyms = symtab_hdr->sh_size / sizeof (Elf_External_Sym); - extsymoff = 0; - } - else - extsymoff = nlocsyms = symtab_hdr->sh_info; - - if (symtab_hdr->contents) - locsyms = (Elf_External_Sym *) symtab_hdr->contents; - else if (nlocsyms == 0) - locsyms = NULL; - else - { - bfd_size_type amt = nlocsyms * sizeof (Elf_External_Sym); - locsyms = freesyms = bfd_malloc (amt); - if (freesyms == NULL - || bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0 - || bfd_bread (locsyms, amt, input_bfd) != amt) - { - ret = false; - goto out1; - } - } - - shndx_hdr = &elf_tdata (input_bfd)->symtab_shndx_hdr; - locsym_shndx = NULL; - if (shndx_hdr->sh_size != 0 && nlocsyms != 0) - { - bfd_size_type amt = nlocsyms * sizeof (Elf_External_Sym_Shndx); - locsym_shndx = (Elf_External_Sym_Shndx *) bfd_malloc (amt); - if (bfd_seek (input_bfd, shndx_hdr->sh_offset, SEEK_SET) != 0 - || bfd_bread (locsym_shndx, amt, input_bfd) != amt) - return false; - } - - /* Read the relocations. */ - relstart = (NAME(_bfd_elf,link_read_relocs) - (sec->owner, sec, NULL, (Elf_Internal_Rela *) NULL, - info->keep_memory)); - if (relstart == NULL) - { - ret = false; - goto out1; - } - relend = relstart + sec->reloc_count * bed->s->int_rels_per_ext_rel; - - for (rel = relstart; rel < relend; rel++) - { - unsigned long r_symndx; - asection *rsec; - struct elf_link_hash_entry *h; - Elf_Internal_Sym s; - - r_symndx = ELF_R_SYM (rel->r_info); - if (r_symndx == 0) - continue; - - if (elf_bad_symtab (sec->owner)) - { - elf_swap_symbol_in (input_bfd, - locsyms + r_symndx, - locsym_shndx + (locsym_shndx ? r_symndx : 0), - &s); - if (ELF_ST_BIND (s.st_info) == STB_LOCAL) - rsec = (*gc_mark_hook) (sec->owner, info, rel, NULL, &s); - else - { - h = sym_hashes[r_symndx - extsymoff]; - rsec = (*gc_mark_hook) (sec->owner, info, rel, h, NULL); - } - } - else if (r_symndx >= nlocsyms) - { - h = sym_hashes[r_symndx - extsymoff]; - rsec = (*gc_mark_hook) (sec->owner, info, rel, h, NULL); - } - else - { - elf_swap_symbol_in (input_bfd, - locsyms + r_symndx, - locsym_shndx + (locsym_shndx ? r_symndx : 0), - &s); - rsec = (*gc_mark_hook) (sec->owner, info, rel, NULL, &s); - } - - if (rsec && !rsec->gc_mark) - { - if (bfd_get_flavour (rsec->owner) != bfd_target_elf_flavour) - rsec->gc_mark = 1; - else if (!elf_gc_mark (info, rsec, gc_mark_hook)) - { - ret = false; - goto out2; - } - } - } - - out2: - if (!info->keep_memory) - free (relstart); - out1: - if (freesyms) - free (freesyms); - } - - return ret; -} - -/* The sweep phase of garbage collection. Remove all garbage sections. */ - -static boolean -elf_gc_sweep (info, gc_sweep_hook) - struct bfd_link_info *info; - boolean (*gc_sweep_hook) - PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *o, - const Elf_Internal_Rela *relocs)); -{ - bfd *sub; - - for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) - { - asection *o; - - if (bfd_get_flavour (sub) != bfd_target_elf_flavour) - continue; - - for (o = sub->sections; o != NULL; o = o->next) - { - /* Keep special sections. Keep .debug sections. */ - if ((o->flags & SEC_LINKER_CREATED) - || (o->flags & SEC_DEBUGGING)) - o->gc_mark = 1; - - if (o->gc_mark) - continue; - - /* Skip sweeping sections already excluded. */ - if (o->flags & SEC_EXCLUDE) - continue; - - /* Since this is early in the link process, it is simple - to remove a section from the output. */ - o->flags |= SEC_EXCLUDE; - - /* But we also have to update some of the relocation - info we collected before. */ - if (gc_sweep_hook - && (o->flags & SEC_RELOC) && o->reloc_count > 0) - { - Elf_Internal_Rela *internal_relocs; - boolean r; - - internal_relocs = (NAME(_bfd_elf,link_read_relocs) - (o->owner, o, NULL, NULL, info->keep_memory)); - if (internal_relocs == NULL) - return false; - - r = (*gc_sweep_hook) (o->owner, info, o, internal_relocs); - - if (!info->keep_memory) - free (internal_relocs); - - if (!r) - return false; - } - } - } - - /* Remove the symbols that were in the swept sections from the dynamic - symbol table. GCFIXME: Anyone know how to get them out of the - static symbol table as well? */ - { - int i = 0; - - elf_link_hash_traverse (elf_hash_table (info), - elf_gc_sweep_symbol, - (PTR) &i); - - elf_hash_table (info)->dynsymcount = i; - } - - return true; -} - -/* Sweep symbols in swept sections. Called via elf_link_hash_traverse. */ - -static boolean -elf_gc_sweep_symbol (h, idxptr) - struct elf_link_hash_entry *h; - PTR idxptr; -{ - int *idx = (int *) idxptr; - - if (h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - - if (h->dynindx != -1 - && ((h->root.type != bfd_link_hash_defined - && h->root.type != bfd_link_hash_defweak) - || h->root.u.def.section->gc_mark)) - h->dynindx = (*idx)++; - - return true; -} - -/* Propogate collected vtable information. This is called through - elf_link_hash_traverse. */ - -static boolean -elf_gc_propagate_vtable_entries_used (h, okp) - struct elf_link_hash_entry *h; - PTR okp; -{ - if (h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - - /* Those that are not vtables. */ - if (h->vtable_parent == NULL) - return true; - - /* Those vtables that do not have parents, we cannot merge. */ - if (h->vtable_parent == (struct elf_link_hash_entry *) -1) - return true; - - /* If we've already been done, exit. */ - if (h->vtable_entries_used && h->vtable_entries_used[-1]) - return true; - - /* Make sure the parent's table is up to date. */ - elf_gc_propagate_vtable_entries_used (h->vtable_parent, okp); - - if (h->vtable_entries_used == NULL) - { - /* None of this table's entries were referenced. Re-use the - parent's table. */ - h->vtable_entries_used = h->vtable_parent->vtable_entries_used; - h->vtable_entries_size = h->vtable_parent->vtable_entries_size; - } - else - { - size_t n; - boolean *cu, *pu; - - /* Or the parent's entries into ours. */ - cu = h->vtable_entries_used; - cu[-1] = true; - pu = h->vtable_parent->vtable_entries_used; - if (pu != NULL) - { - asection *sec = h->root.u.def.section; - struct elf_backend_data *bed = get_elf_backend_data (sec->owner); - int file_align = bed->s->file_align; - - n = h->vtable_parent->vtable_entries_size / file_align; - while (n--) - { - if (*pu) - *cu = true; - pu++; - cu++; - } - } - } - - return true; -} - -static boolean -elf_gc_smash_unused_vtentry_relocs (h, okp) - struct elf_link_hash_entry *h; - PTR okp; -{ - asection *sec; - bfd_vma hstart, hend; - Elf_Internal_Rela *relstart, *relend, *rel; - struct elf_backend_data *bed; - int file_align; - - if (h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - - /* Take care of both those symbols that do not describe vtables as - well as those that are not loaded. */ - if (h->vtable_parent == NULL) - return true; - - BFD_ASSERT (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak); - - sec = h->root.u.def.section; - hstart = h->root.u.def.value; - hend = hstart + h->size; - - relstart = (NAME(_bfd_elf,link_read_relocs) - (sec->owner, sec, NULL, (Elf_Internal_Rela *) NULL, true)); - if (!relstart) - return *(boolean *) okp = false; - bed = get_elf_backend_data (sec->owner); - file_align = bed->s->file_align; - - relend = relstart + sec->reloc_count * bed->s->int_rels_per_ext_rel; - - for (rel = relstart; rel < relend; ++rel) - if (rel->r_offset >= hstart && rel->r_offset < hend) - { - /* If the entry is in use, do nothing. */ - if (h->vtable_entries_used - && (rel->r_offset - hstart) < h->vtable_entries_size) - { - bfd_vma entry = (rel->r_offset - hstart) / file_align; - if (h->vtable_entries_used[entry]) - continue; - } - /* Otherwise, kill it. */ - rel->r_offset = rel->r_info = rel->r_addend = 0; - } - - return true; -} - -/* Do mark and sweep of unused sections. */ - -boolean -elf_gc_sections (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - boolean ok = true; - bfd *sub; - asection * (*gc_mark_hook) - PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *, - struct elf_link_hash_entry *h, Elf_Internal_Sym *)); - - if (!get_elf_backend_data (abfd)->can_gc_sections - || info->relocateable || info->emitrelocations - || elf_hash_table (info)->dynamic_sections_created) - return true; - - /* Apply transitive closure to the vtable entry usage info. */ - elf_link_hash_traverse (elf_hash_table (info), - elf_gc_propagate_vtable_entries_used, - (PTR) &ok); - if (!ok) - return false; - - /* Kill the vtable relocations that were not used. */ - elf_link_hash_traverse (elf_hash_table (info), - elf_gc_smash_unused_vtentry_relocs, - (PTR) &ok); - if (!ok) - return false; - - /* Grovel through relocs to find out who stays ... */ - - gc_mark_hook = get_elf_backend_data (abfd)->gc_mark_hook; - for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) - { - asection *o; - - if (bfd_get_flavour (sub) != bfd_target_elf_flavour) - continue; - - for (o = sub->sections; o != NULL; o = o->next) - { - if (o->flags & SEC_KEEP) - if (!elf_gc_mark (info, o, gc_mark_hook)) - return false; - } - } - - /* ... and mark SEC_EXCLUDE for those that go. */ - if (!elf_gc_sweep (info, get_elf_backend_data (abfd)->gc_sweep_hook)) - return false; - - return true; -} - -/* Called from check_relocs to record the existance of a VTINHERIT reloc. */ - -boolean -elf_gc_record_vtinherit (abfd, sec, h, offset) - bfd *abfd; - asection *sec; - struct elf_link_hash_entry *h; - bfd_vma offset; -{ - struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; - struct elf_link_hash_entry **search, *child; - bfd_size_type extsymcount; - - /* The sh_info field of the symtab header tells us where the - external symbols start. We don't care about the local symbols at - this point. */ - extsymcount = elf_tdata (abfd)->symtab_hdr.sh_size/sizeof (Elf_External_Sym); - if (!elf_bad_symtab (abfd)) - extsymcount -= elf_tdata (abfd)->symtab_hdr.sh_info; - - sym_hashes = elf_sym_hashes (abfd); - sym_hashes_end = sym_hashes + extsymcount; - - /* Hunt down the child symbol, which is in this section at the same - offset as the relocation. */ - for (search = sym_hashes; search != sym_hashes_end; ++search) - { - if ((child = *search) != NULL - && (child->root.type == bfd_link_hash_defined - || child->root.type == bfd_link_hash_defweak) - && child->root.u.def.section == sec - && child->root.u.def.value == offset) - goto win; - } - - (*_bfd_error_handler) ("%s: %s+%lu: No symbol found for INHERIT", - bfd_archive_filename (abfd), sec->name, - (unsigned long) offset); - bfd_set_error (bfd_error_invalid_operation); - return false; - - win: - if (!h) - { - /* This *should* only be the absolute section. It could potentially - be that someone has defined a non-global vtable though, which - would be bad. It isn't worth paging in the local symbols to be - sure though; that case should simply be handled by the assembler. */ - - child->vtable_parent = (struct elf_link_hash_entry *) -1; - } - else - child->vtable_parent = h; - - return true; -} - -/* Called from check_relocs to record the existance of a VTENTRY reloc. */ - -boolean -elf_gc_record_vtentry (abfd, sec, h, addend) - bfd *abfd ATTRIBUTE_UNUSED; - asection *sec ATTRIBUTE_UNUSED; - struct elf_link_hash_entry *h; - bfd_vma addend; -{ - struct elf_backend_data *bed = get_elf_backend_data (abfd); - int file_align = bed->s->file_align; - - if (addend >= h->vtable_entries_size) - { - size_t size, bytes; - boolean *ptr = h->vtable_entries_used; - - /* While the symbol is undefined, we have to be prepared to handle - a zero size. */ - if (h->root.type == bfd_link_hash_undefined) - size = addend; - else - { - size = h->size; - if (size < addend) - { - /* Oops! We've got a reference past the defined end of - the table. This is probably a bug -- shall we warn? */ - size = addend; - } - } - - /* Allocate one extra entry for use as a "done" flag for the - consolidation pass. */ - bytes = (size / file_align + 1) * sizeof (boolean); - - if (ptr) - { - ptr = bfd_realloc (ptr - 1, (bfd_size_type) bytes); - - if (ptr != NULL) - { - size_t oldbytes; - - oldbytes = ((h->vtable_entries_size / file_align + 1) - * sizeof (boolean)); - memset (((char *) ptr) + oldbytes, 0, bytes - oldbytes); - } - } - else - ptr = bfd_zmalloc ((bfd_size_type) bytes); - - if (ptr == NULL) - return false; - - /* And arrange for that done flag to be at index -1. */ - h->vtable_entries_used = ptr + 1; - h->vtable_entries_size = size; - } - - h->vtable_entries_used[addend / file_align] = true; - - return true; -} - -/* And an accompanying bit to work out final got entry offsets once - we're done. Should be called from final_link. */ - -boolean -elf_gc_common_finalize_got_offsets (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - bfd *i; - struct elf_backend_data *bed = get_elf_backend_data (abfd); - bfd_vma gotoff; - - /* The GOT offset is relative to the .got section, but the GOT header is - put into the .got.plt section, if the backend uses it. */ - if (bed->want_got_plt) - gotoff = 0; - else - gotoff = bed->got_header_size; - - /* Do the local .got entries first. */ - for (i = info->input_bfds; i; i = i->link_next) - { - bfd_signed_vma *local_got; - bfd_size_type j, locsymcount; - Elf_Internal_Shdr *symtab_hdr; - - if (bfd_get_flavour (i) != bfd_target_elf_flavour) - continue; - - local_got = elf_local_got_refcounts (i); - if (!local_got) - continue; - - symtab_hdr = &elf_tdata (i)->symtab_hdr; - if (elf_bad_symtab (i)) - locsymcount = symtab_hdr->sh_size / sizeof (Elf_External_Sym); - else - locsymcount = symtab_hdr->sh_info; - - for (j = 0; j < locsymcount; ++j) - { - if (local_got[j] > 0) - { - local_got[j] = gotoff; - gotoff += ARCH_SIZE / 8; - } - else - local_got[j] = (bfd_vma) -1; - } - } - - /* Then the global .got entries. .plt refcounts are handled by - adjust_dynamic_symbol */ - elf_link_hash_traverse (elf_hash_table (info), - elf_gc_allocate_got_offsets, - (PTR) &gotoff); - return true; -} - -/* We need a special top-level link routine to convert got reference counts - to real got offsets. */ - -static boolean -elf_gc_allocate_got_offsets (h, offarg) - struct elf_link_hash_entry *h; - PTR offarg; -{ - bfd_vma *off = (bfd_vma *) offarg; - - if (h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - - if (h->got.refcount > 0) - { - h->got.offset = off[0]; - off[0] += ARCH_SIZE / 8; - } - else - h->got.offset = (bfd_vma) -1; - - return true; -} - -/* Many folk need no more in the way of final link than this, once - got entry reference counting is enabled. */ - -boolean -elf_gc_common_final_link (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - if (!elf_gc_common_finalize_got_offsets (abfd, info)) - return false; - - /* Invoke the regular ELF backend linker to do all the work. */ - return elf_bfd_final_link (abfd, info); -} - -/* This function will be called though elf_link_hash_traverse to store - all hash value of the exported symbols in an array. */ - -static boolean -elf_collect_hash_codes (h, data) - struct elf_link_hash_entry *h; - PTR data; -{ - unsigned long **valuep = (unsigned long **) data; - const char *name; - char *p; - unsigned long ha; - char *alc = NULL; - - if (h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - - /* Ignore indirect symbols. These are added by the versioning code. */ - if (h->dynindx == -1) - return true; - - name = h->root.root.string; - p = strchr (name, ELF_VER_CHR); - if (p != NULL) - { - alc = bfd_malloc ((bfd_size_type) (p - name + 1)); - memcpy (alc, name, (size_t) (p - name)); - alc[p - name] = '\0'; - name = alc; - } - - /* Compute the hash value. */ - ha = bfd_elf_hash (name); - - /* Store the found hash value in the array given as the argument. */ - *(*valuep)++ = ha; - - /* And store it in the struct so that we can put it in the hash table - later. */ - h->elf_hash_value = ha; - - if (alc != NULL) - free (alc); - - return true; -} - -boolean -elf_reloc_symbol_deleted_p (offset, cookie) - bfd_vma offset; - PTR cookie; -{ - struct elf_reloc_cookie *rcookie = (struct elf_reloc_cookie *) cookie; - - if (rcookie->bad_symtab) - rcookie->rel = rcookie->rels; - - for (; rcookie->rel < rcookie->relend; rcookie->rel++) - { - unsigned long r_symndx = ELF_R_SYM (rcookie->rel->r_info); - Elf_Internal_Sym isym; - - if (! rcookie->bad_symtab) - if (rcookie->rel->r_offset > offset) - return false; - if (rcookie->rel->r_offset != offset) - continue; - - if (rcookie->locsyms && r_symndx < rcookie->locsymcount) - { - Elf_External_Sym *lsym; - Elf_External_Sym_Shndx *lshndx; - - lsym = (Elf_External_Sym *) rcookie->locsyms + r_symndx; - lshndx = (Elf_External_Sym_Shndx *) rcookie->locsym_shndx; - if (lshndx != NULL) - lshndx += r_symndx; - elf_swap_symbol_in (rcookie->abfd, lsym, lshndx, &isym); - } - - if (r_symndx >= rcookie->locsymcount - || (rcookie->locsyms - && ELF_ST_BIND (isym.st_info) != STB_LOCAL)) - { - struct elf_link_hash_entry *h; - - h = rcookie->sym_hashes[r_symndx - rcookie->extsymoff]; - - while (h->root.type == bfd_link_hash_indirect - || h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - - if ((h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - && elf_discarded_section (h->root.u.def.section)) - return true; - else - return false; - } - else if (rcookie->locsyms) - { - /* It's not a relocation against a global symbol, - but it could be a relocation against a local - symbol for a discarded section. */ - asection *isec; - - /* Need to: get the symbol; get the section. */ - if (isym.st_shndx < SHN_LORESERVE || isym.st_shndx > SHN_HIRESERVE) - { - isec = section_from_elf_index (rcookie->abfd, isym.st_shndx); - if (isec != NULL && elf_discarded_section (isec)) - return true; - } - } - return false; - } - return false; -} - -/* Discard unneeded references to discarded sections. - Returns true if any section's size was changed. */ -/* This function assumes that the relocations are in sorted order, - which is true for all known assemblers. */ - -boolean -elf_bfd_discard_info (output_bfd, info) - bfd *output_bfd; - struct bfd_link_info *info; -{ - struct elf_reloc_cookie cookie; - asection *stab, *eh, *ehdr; - Elf_Internal_Shdr *symtab_hdr; - Elf_Internal_Shdr *shndx_hdr; - Elf_External_Sym *freesyms; - struct elf_backend_data *bed; - bfd *abfd; - boolean ret = false; - boolean strip = info->strip == strip_all || info->strip == strip_debugger; - - if (info->relocateable - || info->traditional_format - || info->hash->creator->flavour != bfd_target_elf_flavour - || ! is_elf_hash_table (info)) - return false; - - ehdr = NULL; - if (elf_hash_table (info)->dynobj != NULL) - ehdr = bfd_get_section_by_name (elf_hash_table (info)->dynobj, - ".eh_frame_hdr"); - - for (abfd = info->input_bfds; abfd != NULL; abfd = abfd->link_next) - { - if (bfd_get_flavour (abfd) != bfd_target_elf_flavour) - continue; - - bed = get_elf_backend_data (abfd); - - if ((abfd->flags & DYNAMIC) != 0) - continue; - - eh = NULL; - if (ehdr) - { - eh = bfd_get_section_by_name (abfd, ".eh_frame"); - if (eh && eh->_raw_size == 0) - eh = NULL; - } - - stab = strip ? NULL : bfd_get_section_by_name (abfd, ".stab"); - if ((! stab - || elf_section_data(stab)->sec_info_type != ELF_INFO_TYPE_STABS) - && ! eh - && (strip || ! bed->elf_backend_discard_info)) - continue; - - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; - - cookie.abfd = abfd; - cookie.sym_hashes = elf_sym_hashes (abfd); - cookie.bad_symtab = elf_bad_symtab (abfd); - if (cookie.bad_symtab) - { - cookie.locsymcount = - symtab_hdr->sh_size / sizeof (Elf_External_Sym); - cookie.extsymoff = 0; - } - else - { - cookie.locsymcount = symtab_hdr->sh_info; - cookie.extsymoff = symtab_hdr->sh_info; - } - - freesyms = NULL; - if (symtab_hdr->contents) - cookie.locsyms = (void *) symtab_hdr->contents; - else if (cookie.locsymcount == 0) - cookie.locsyms = NULL; - else - { - bfd_size_type amt = cookie.locsymcount * sizeof (Elf_External_Sym); - cookie.locsyms = bfd_malloc (amt); - if (cookie.locsyms == NULL) - return false; - freesyms = cookie.locsyms; - if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0 - || bfd_bread (cookie.locsyms, amt, abfd) != amt) - { - error_ret_free_loc: - free (cookie.locsyms); - return false; - } - } - - cookie.locsym_shndx = NULL; - if (shndx_hdr->sh_size != 0 && cookie.locsymcount != 0) - { - bfd_size_type amt; - amt = cookie.locsymcount * sizeof (Elf_External_Sym_Shndx); - cookie.locsym_shndx = bfd_malloc (amt); - if (cookie.locsym_shndx == NULL) - goto error_ret_free_loc; - if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0 - || bfd_bread (cookie.locsym_shndx, amt, abfd) != amt) - { - free (cookie.locsym_shndx); - goto error_ret_free_loc; - } - } - - if (stab) - { - cookie.rels = (NAME(_bfd_elf,link_read_relocs) - (abfd, stab, (PTR) NULL, - (Elf_Internal_Rela *) NULL, - info->keep_memory)); - if (cookie.rels) - { - cookie.rel = cookie.rels; - cookie.relend = - cookie.rels + stab->reloc_count * bed->s->int_rels_per_ext_rel; - if (_bfd_discard_section_stabs (abfd, stab, - elf_section_data (stab)->sec_info, - elf_reloc_symbol_deleted_p, - &cookie)) - ret = true; - if (! info->keep_memory) - free (cookie.rels); - } - } - - if (eh) - { - cookie.rels = NULL; - cookie.rel = NULL; - cookie.relend = NULL; - if (eh->reloc_count) - cookie.rels = (NAME(_bfd_elf,link_read_relocs) - (abfd, eh, (PTR) NULL, (Elf_Internal_Rela *) NULL, - info->keep_memory)); - if (cookie.rels) - { - cookie.rel = cookie.rels; - cookie.relend = - cookie.rels + eh->reloc_count * bed->s->int_rels_per_ext_rel; - } - if (_bfd_elf_discard_section_eh_frame (abfd, info, eh, ehdr, - elf_reloc_symbol_deleted_p, - &cookie)) - ret = true; - if (! info->keep_memory) - free (cookie.rels); - } - - if (bed->elf_backend_discard_info) - { - if (bed->elf_backend_discard_info (abfd, &cookie, info)) - ret = true; - } - - if (cookie.locsym_shndx != NULL) - free (cookie.locsym_shndx); - - if (freesyms != NULL) - free (freesyms); - } - - if (ehdr && _bfd_elf_discard_section_eh_frame_hdr (output_bfd, info, ehdr)) - ret = true; - return ret; -} - -static boolean -elf_section_ignore_discarded_relocs (sec) - asection *sec; -{ - struct elf_backend_data *bed; - - switch (elf_section_data (sec)->sec_info_type) - { - case ELF_INFO_TYPE_STABS: - case ELF_INFO_TYPE_EH_FRAME: - return true; - default: - break; - } - - bed = get_elf_backend_data (sec->owner); - if (bed->elf_backend_ignore_discarded_relocs != NULL - && (*bed->elf_backend_ignore_discarded_relocs) (sec)) - return true; - - return false; -} |