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authornobody <>2002-09-20 15:44:24 +0000
committernobody <>2002-09-20 15:44:24 +0000
commitd026a66d1d57bc024f33f1b8fcc413c45d495583 (patch)
treef1dde1afb8c421f7a0c1a1c4d01d861c18cf0ff9 /gdb/procfs.c
parent9dcc0b141cc6b94354177de13359f44691713b19 (diff)
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This commit was manufactured by cvs2svn to create branchcarlton_dictionary-20020920-branchpoint
'carlton_dictionary-branch'. Cherrypick from gdb_5_3-branch 2002-09-03 22:29:15 UTC nobody 'This commit was manufactured by cvs2svn to create branch 'gdb_5_3-branch'.': .cvsignore COPYING COPYING.LIB MAINTAINERS Makefile.in README README-maintainer-mode bfd/COPYING bfd/ChangeLog-0001 bfd/ChangeLog-9193 bfd/ChangeLog-9495 bfd/ChangeLog-9697 bfd/ChangeLog-9899 bfd/MAINTAINERS 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/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.in bfd/configure.com bfd/configure.host 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-dlx.c bfd/cpu-fr30.c bfd/cpu-frv.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-ip2k.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/ecofflink.c 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/elf32-arc.c bfd/elf32-avr.c bfd/elf32-cris.c bfd/elf32-d10v.c bfd/elf32-d30v.c bfd/elf32-dlx.c bfd/elf32-fr30.c bfd/elf32-frv.c bfd/elf32-gen.c bfd/elf32-hppa.c bfd/elf32-hppa.h bfd/elf32-i370.c bfd/elf32-i386qnx.c bfd/elf32-i860.c bfd/elf32-i960.c bfd/elf32-ip2k.c bfd/elf32-m32r.c bfd/elf32-m68hc11.c 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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/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/targmatch.sed bfd/tekhex.c bfd/ticoff.h 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gdb/config/m68k/nbsdaout.mh gdb/config/m68k/nbsdaout.mt gdb/config/m68k/nm-apollo68b.h gdb/config/m68k/nm-apollo68v.h gdb/config/m68k/nm-delta68.h gdb/config/m68k/nm-dpx2.h gdb/config/m68k/nm-hp300bsd.h gdb/config/m68k/nm-hp300hpux.h gdb/config/m68k/nm-linux.h gdb/config/m68k/nm-m68klynx.h gdb/config/m68k/nm-nbsd.h gdb/config/m68k/nm-nbsdaout.h gdb/config/m68k/nm-sun2.h gdb/config/m68k/nm-sun3.h 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 gdb/config/m68k/tm-delta68.h gdb/config/m68k/tm-dpx2.h gdb/config/m68k/tm-es1800.h gdb/config/m68k/tm-hp300bsd.h gdb/config/m68k/tm-hp300hpux.h gdb/config/m68k/tm-linux.h gdb/config/m68k/tm-m68k.h gdb/config/m68k/tm-m68klynx.h gdb/config/m68k/tm-m68kv4.h gdb/config/m68k/tm-mac.h gdb/config/m68k/tm-monitor.h gdb/config/m68k/tm-nbsd.h gdb/config/m68k/tm-os68k.h gdb/config/m68k/tm-st2000.h gdb/config/m68k/tm-sun2.h gdb/config/m68k/tm-sun2os4.h gdb/config/m68k/tm-sun3.h gdb/config/m68k/tm-sun3os4.h gdb/config/m68k/tm-vx68.h gdb/config/m68k/vxworks68.mt gdb/config/m68k/xm-3b1.h gdb/config/m68k/xm-apollo68b.h gdb/config/m68k/xm-apollo68v.h gdb/config/m68k/xm-delta68.h gdb/config/m68k/xm-dpx2.h gdb/config/m68k/xm-hp300bsd.h gdb/config/m68k/xm-hp300hpux.h gdb/config/m68k/xm-linux.h gdb/config/m68k/xm-m68k.h gdb/config/m68k/xm-m68kv4.h gdb/config/m68k/xm-nbsd.h gdb/config/m68k/xm-sun2.h gdb/config/m68k/xm-sun3.h gdb/config/m68k/xm-sun3os4.h gdb/config/m88k/delta88.mh gdb/config/m88k/delta88.mt gdb/config/m88k/delta88v4.mh gdb/config/m88k/delta88v4.mt gdb/config/m88k/m88k.mh gdb/config/m88k/m88k.mt gdb/config/m88k/nm-delta88v4.h gdb/config/m88k/nm-m88k.h gdb/config/m88k/tm-delta88.h gdb/config/m88k/tm-delta88v4.h gdb/config/m88k/tm-m88k.h gdb/config/m88k/xm-delta88.h gdb/config/m88k/xm-delta88v4.h gdb/config/m88k/xm-dgux.h gdb/config/mcore/mcore.mt gdb/config/mips/bigmips.mt gdb/config/mips/bigmips64.mt gdb/config/mips/decstation.mh gdb/config/mips/decstation.mt gdb/config/mips/embed.mt gdb/config/mips/embed64.mt gdb/config/mips/embedl.mt gdb/config/mips/embedl64.mt gdb/config/mips/irix3.mh gdb/config/mips/irix3.mt gdb/config/mips/irix4.mh gdb/config/mips/irix5.mh gdb/config/mips/irix5.mt gdb/config/mips/irix6.mh gdb/config/mips/irix6.mt gdb/config/mips/linux.mh gdb/config/mips/linux.mt gdb/config/mips/littlemips.mh gdb/config/mips/littlemips.mt gdb/config/mips/mipsm3.mh gdb/config/mips/mipsm3.mt gdb/config/mips/mipsv4.mh gdb/config/mips/mipsv4.mt gdb/config/mips/nbsd.mh gdb/config/mips/nbsd.mt gdb/config/mips/news-mips.mh gdb/config/mips/nm-irix3.h gdb/config/mips/nm-irix4.h gdb/config/mips/nm-irix5.h gdb/config/mips/nm-irix6.h gdb/config/mips/nm-linux.h gdb/config/mips/nm-mips.h gdb/config/mips/nm-nbsd.h gdb/config/mips/nm-news-mips.h gdb/config/mips/nm-riscos.h gdb/config/mips/riscos.mh gdb/config/mips/tm-bigmips.h gdb/config/mips/tm-bigmips64.h gdb/config/mips/tm-embed.h gdb/config/mips/tm-embed64.h gdb/config/mips/tm-embedl.h gdb/config/mips/tm-embedl64.h gdb/config/mips/tm-irix3.h gdb/config/mips/tm-irix5.h gdb/config/mips/tm-linux.h gdb/config/mips/tm-mips64.h gdb/config/mips/tm-mipsm3.h gdb/config/mips/tm-mipsv4.h gdb/config/mips/tm-nbsd.h gdb/config/mips/tm-tx39.h gdb/config/mips/tm-tx39l.h gdb/config/mips/tm-vr4100.h gdb/config/mips/tm-vr4300.h gdb/config/mips/tm-vr4300el.h gdb/config/mips/tm-vr4xxx.h gdb/config/mips/tm-vr4xxxel.h gdb/config/mips/tm-vr5000.h gdb/config/mips/tm-vr5000el.h gdb/config/mips/tm-vxmips.h gdb/config/mips/tm-wince.h gdb/config/mips/tx39.mt gdb/config/mips/tx39l.mt gdb/config/mips/vr4100.mt gdb/config/mips/vr4300.mt gdb/config/mips/vr4300el.mt gdb/config/mips/vr4xxx.mt gdb/config/mips/vr4xxxel.mt gdb/config/mips/vr5000.mt gdb/config/mips/vr5000el.mt gdb/config/mips/vxmips.mt gdb/config/mips/wince.mt gdb/config/mips/xm-irix3.h gdb/config/mips/xm-irix4.h gdb/config/mips/xm-irix5.h gdb/config/mips/xm-irix6.h gdb/config/mips/xm-linux.h gdb/config/mips/xm-mips.h gdb/config/mips/xm-mipsm3.h gdb/config/mips/xm-mipsv4.h gdb/config/mips/xm-riscos.h gdb/config/mn10200/mn10200.mt gdb/config/mn10200/tm-mn10200.h gdb/config/mn10300/mn10300.mt gdb/config/nm-gnu.h gdb/config/nm-linux.h gdb/config/nm-lynx.h gdb/config/nm-m3.h gdb/config/nm-nbsd.h gdb/config/nm-nbsdaout.h gdb/config/nm-sysv4.h gdb/config/none/nm-none.h gdb/config/none/none.mh gdb/config/none/none.mt gdb/config/none/tm-none.h gdb/config/none/xm-none.h gdb/config/ns32k/nbsdaout.mh gdb/config/ns32k/nbsdaout.mt gdb/config/ns32k/nm-nbsd.h gdb/config/ns32k/nm-nbsdaout.h gdb/config/ns32k/tm-nbsd.h gdb/config/ns32k/tm-ns32k.h gdb/config/ns32k/xm-nbsd.h gdb/config/pa/hppa.mt gdb/config/pa/hppa64.mt gdb/config/pa/hppabsd.mh gdb/config/pa/hppabsd.mt gdb/config/pa/hppahpux.mh gdb/config/pa/hppahpux.mt gdb/config/pa/hppaosf.mh gdb/config/pa/hppaosf.mt gdb/config/pa/hppapro.mt gdb/config/pa/hpux1020.mh gdb/config/pa/hpux1020.mt gdb/config/pa/hpux11.mh gdb/config/pa/hpux11.mt gdb/config/pa/hpux11w.mh gdb/config/pa/hpux11w.mt gdb/config/pa/nm-hppab.h gdb/config/pa/nm-hppah.h gdb/config/pa/nm-hppah11.h gdb/config/pa/nm-hppao.h gdb/config/pa/tm-hppa.h gdb/config/pa/tm-hppa64.h gdb/config/pa/tm-hppab.h gdb/config/pa/tm-hppah.h gdb/config/pa/tm-hppao.h gdb/config/pa/tm-pro.h gdb/config/pa/xm-hppab.h gdb/config/pa/xm-hppah.h gdb/config/pa/xm-pa.h gdb/config/powerpc/aix.mh gdb/config/powerpc/aix.mt gdb/config/powerpc/aix432.mh gdb/config/powerpc/gdbserve.mt gdb/config/powerpc/linux.mh gdb/config/powerpc/linux.mt gdb/config/powerpc/nbsd.mh gdb/config/powerpc/nbsd.mt gdb/config/powerpc/nm-aix.h gdb/config/powerpc/nm-linux.h gdb/config/powerpc/nm-nbsd.h gdb/config/powerpc/ppc-eabi.mt gdb/config/powerpc/ppc-sim.mt gdb/config/powerpc/ppcle-eabi.mt gdb/config/powerpc/ppcle-sim.mt gdb/config/powerpc/tm-linux.h gdb/config/powerpc/tm-nbsd.h gdb/config/powerpc/tm-ppc-aix.h gdb/config/powerpc/tm-ppc-eabi.h gdb/config/powerpc/tm-ppc-sim.h gdb/config/powerpc/tm-ppcle-eabi.h gdb/config/powerpc/tm-ppcle-sim.h gdb/config/powerpc/tm-vxworks.h gdb/config/powerpc/vxworks.mt gdb/config/powerpc/xm-aix.h gdb/config/powerpc/xm-linux.h gdb/config/rs6000/aix4.mh gdb/config/rs6000/aix4.mt gdb/config/rs6000/nm-rs6000.h gdb/config/rs6000/nm-rs6000ly.h gdb/config/rs6000/rs6000.mh gdb/config/rs6000/rs6000.mt gdb/config/rs6000/rs6000lynx.mh gdb/config/rs6000/rs6000lynx.mt gdb/config/rs6000/tm-rs6000-aix4.h gdb/config/rs6000/tm-rs6000.h gdb/config/rs6000/tm-rs6000ly.h gdb/config/rs6000/xm-aix4.h gdb/config/rs6000/xm-rs6000.h gdb/config/s390/nm-linux.h gdb/config/s390/s390.mh gdb/config/s390/s390.mt gdb/config/s390/s390x.mt gdb/config/s390/tm-linux.h gdb/config/s390/tm-s390.h gdb/config/s390/xm-linux.h gdb/config/sh/embed.mt gdb/config/sh/linux.mt gdb/config/sh/nbsd.mh gdb/config/sh/nbsd.mt gdb/config/sh/nm-nbsd.h gdb/config/sh/tm-linux.h gdb/config/sh/tm-nbsd.h gdb/config/sh/tm-sh.h gdb/config/sh/tm-wince.h gdb/config/sh/wince.mt gdb/config/sparc/fbsd.mh gdb/config/sparc/fbsd.mt gdb/config/sparc/linux.mh gdb/config/sparc/linux.mt gdb/config/sparc/nbsd.mt gdb/config/sparc/nbsd64.mh gdb/config/sparc/nbsd64.mt gdb/config/sparc/nbsdaout.mh gdb/config/sparc/nbsdelf.mh gdb/config/sparc/nm-fbsd.h gdb/config/sparc/nm-linux.h gdb/config/sparc/nm-nbsd.h gdb/config/sparc/nm-nbsdaout.h gdb/config/sparc/nm-sparclynx.h gdb/config/sparc/nm-sun4os4.h gdb/config/sparc/nm-sun4sol2.h gdb/config/sparc/sp64.mt gdb/config/sparc/sp64linux.mt gdb/config/sparc/sp64sim.mt gdb/config/sparc/sp64sol2.mt gdb/config/sparc/sparc-em.mt gdb/config/sparc/sparclet.mt gdb/config/sparc/sparclite.mt gdb/config/sparc/sparclynx.mh gdb/config/sparc/sparclynx.mt gdb/config/sparc/sun4os4.mh gdb/config/sparc/sun4os4.mt gdb/config/sparc/sun4sol2.mh gdb/config/sparc/sun4sol2.mt gdb/config/sparc/tm-fbsd.h gdb/config/sparc/tm-linux.h gdb/config/sparc/tm-nbsd.h gdb/config/sparc/tm-nbsd64.h gdb/config/sparc/tm-sp64.h gdb/config/sparc/tm-sp64linux.h gdb/config/sparc/tm-sp64sim.h gdb/config/sparc/tm-sparc.h gdb/config/sparc/tm-sparclet.h gdb/config/sparc/tm-sparclite.h gdb/config/sparc/tm-sparclynx.h gdb/config/sparc/tm-spc-em.h gdb/config/sparc/tm-sun4os4.h gdb/config/sparc/tm-sun4sol2.h gdb/config/sparc/tm-vxsparc.h gdb/config/sparc/vxsparc.mt gdb/config/sparc/xm-linux.h gdb/config/sparc/xm-sun4sol2.h gdb/config/tm-linux.h gdb/config/tm-lynx.h gdb/config/tm-sunos.h gdb/config/tm-sysv4.h gdb/config/tm-vxworks.h gdb/config/v850/v850.mt gdb/config/vax/nm-vax.h gdb/config/vax/tm-vax.h gdb/config/vax/tm-vaxbsd.h gdb/config/vax/vax.mt gdb/config/vax/vaxbsd.mh gdb/config/vax/vaxult.mh gdb/config/vax/vaxult2.mh gdb/config/vax/xm-vax.h gdb/config/vax/xm-vaxbsd.h gdb/config/vax/xm-vaxult.h gdb/config/vax/xm-vaxult2.h gdb/config/xm-aix4.h gdb/config/xm-nbsd.h gdb/config/xm-sysv4.h gdb/config/xstormy16/xstormy16.mt gdb/config/z8k/tm-z8k.h gdb/config/z8k/z8k.mt gdb/configure.host gdb/configure.tgt gdb/copying.awk gdb/copying.c gdb/core-aout.c gdb/core-regset.c gdb/core-sol2.c gdb/corefile.c gdb/corelow.c gdb/cp-abi.c gdb/cp-abi.h gdb/cpu32bug-rom.c gdb/cxux-nat.c gdb/d30v-tdep.c gdb/dbug-rom.c gdb/dcache.c gdb/dcache.h gdb/delta68-nat.c gdb/demangle.c gdb/dink32-rom.c gdb/doc/LRS gdb/doc/Makefile.in gdb/doc/a4rc.sed gdb/doc/agentexpr.texi gdb/doc/all-cfg.texi gdb/doc/annotate.texi gdb/doc/configure gdb/doc/configure.in gdb/doc/fdl.texi gdb/doc/gpl.texi gdb/doc/lpsrc.sed gdb/doc/psrc.sed gdb/doc/refcard.tex gdb/doc/stabs.texinfo gdb/doublest.c gdb/doublest.h gdb/dpx2-nat.c gdb/dsrec.c gdb/dst.h gdb/dstread.c gdb/dve3900-rom.c gdb/dwarf2cfi.c gdb/dwarf2cfi.h gdb/environ.c gdb/environ.h gdb/eval.c gdb/event-top.c gdb/event-top.h gdb/exc_request.defs gdb/expprint.c gdb/f-exp.y 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include/mpw/sys/file.h include/mpw/sys/param.h include/mpw/sys/resource.h include/mpw/sys/stat.h include/mpw/sys/time.h include/mpw/sys/types.h include/mpw/utime.h include/mpw/varargs.h include/nlm/ChangeLog include/nlm/alpha-ext.h include/nlm/common.h include/nlm/external.h include/nlm/i386-ext.h include/nlm/internal.h include/nlm/ppc-ext.h include/nlm/sparc32-ext.h include/oasys.h include/objalloc.h include/obstack.h include/opcode/ChangeLog include/opcode/a29k.h include/opcode/alpha.h include/opcode/arc.h include/opcode/arm.h include/opcode/avr.h include/opcode/cgen.h include/opcode/convex.h include/opcode/cris.h include/opcode/d10v.h include/opcode/d30v.h include/opcode/dlx.h include/opcode/h8300.h include/opcode/hppa.h include/opcode/i370.h include/opcode/i386.h include/opcode/i860.h include/opcode/i960.h include/opcode/ia64.h include/opcode/m68hc11.h include/opcode/m68k.h include/opcode/m88k.h include/opcode/mips.h include/opcode/mmix.h include/opcode/mn10200.h 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intl/linux-msg.sed intl/loadinfo.h intl/loadmsgcat.c intl/localealias.c intl/po2tbl.sed.in intl/textdomain.c intl/xopen-msg.sed libiberty/COPYING.LIB libiberty/Makefile.in libiberty/_doprnt.c libiberty/aclocal.m4 libiberty/alloca.c libiberty/argv.c libiberty/asprintf.c libiberty/atexit.c libiberty/basename.c libiberty/bcmp.c libiberty/bcopy.c libiberty/bsearch.c libiberty/bzero.c libiberty/calloc.c libiberty/choose-temp.c libiberty/clock.c libiberty/concat.c libiberty/config.h-vms libiberty/config.in libiberty/config.table libiberty/config/mh-aix libiberty/config/mh-cxux7 libiberty/config/mh-fbsd21 libiberty/config/mh-openedition libiberty/config/mh-windows libiberty/configure libiberty/configure.in libiberty/copying-lib.texi libiberty/copysign.c libiberty/dyn-string.c libiberty/fdmatch.c libiberty/ffs.c libiberty/floatformat.c libiberty/fnmatch.c libiberty/fnmatch.txh libiberty/functions.texi libiberty/gather-docs libiberty/getcwd.c libiberty/getopt.c libiberty/getopt1.c 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libiberty/vfork.c libiberty/vfprintf.c libiberty/vmsbuild.com libiberty/vprintf.c libiberty/vsprintf.c libiberty/waitpid.c libiberty/xatexit.c libiberty/xexit.c libiberty/xmalloc.c libiberty/xmemdup.c libiberty/xstrdup.c libiberty/xstrerror.c libtool.m4 ltcf-c.sh ltcf-cxx.sh ltcf-gcj.sh ltconfig ltmain.sh makefile.vms missing mkdep mkinstalldirs mmalloc/COPYING.LIB mmalloc/ChangeLog mmalloc/MAINTAINERS mmalloc/Makefile.in mmalloc/TODO mmalloc/acinclude.m4 mmalloc/aclocal.m4 mmalloc/attach.c mmalloc/configure mmalloc/configure.in mmalloc/detach.c mmalloc/keys.c mmalloc/mcalloc.c mmalloc/mfree.c mmalloc/mm.c mmalloc/mmalloc.c mmalloc/mmalloc.h mmalloc/mmalloc.texi mmalloc/mmap-sup.c mmalloc/mmcheck.c mmalloc/mmemalign.c mmalloc/mmprivate.h mmalloc/mmstats.c mmalloc/mmtrace.awk mmalloc/mmtrace.c mmalloc/mrealloc.c mmalloc/mvalloc.c mmalloc/sbrk-sup.c move-if-change mpw-README mpw-build.in mpw-config.in mpw-configure mpw-install opcodes/ChangeLog-9297 opcodes/ChangeLog-9899 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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/v850/Makefile.in sim/v850/acconfig.h sim/v850/config.in sim/v850/configure sim/v850/configure.in sim/v850/sim-main.h sim/v850/simops.c sim/v850/simops.h sim/v850/v850_sim.h 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/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 Cherrypick from master 2002-09-20 15:44:23 UTC Nick Clifton <nickc@redhat.com> 'Allow CRFS and CRFD operands to accept CR register names': COPYING.NEWLIB ChangeLog bfd/ChangeLog bfd/Makefile.am bfd/bfd-in.h bfd/bfd-in2.h bfd/bfd.c bfd/coff-tic4x.c bfd/config.bfd bfd/configure bfd/configure.in bfd/cpu-tic4x.c bfd/dwarf2.c bfd/ecoff.c bfd/ecoffswap.h bfd/elf.c bfd/elf32-arm.h bfd/elf32-h8300.c bfd/elf32-i386-fbsd.c bfd/elf32-i386.c bfd/elf32-ppc.c bfd/elf64-alpha-fbsd.c bfd/elf64-alpha.c bfd/elf64-mips.c bfd/elfcode.h bfd/elflink.h bfd/elfn32-mips.c bfd/elfxx-ia64.c bfd/elfxx-mips.c bfd/irix-core.c bfd/libbfd.h bfd/po/da.po bfd/reloc.c bfd/targets.c bfd/version.h config.guess config.sub gdb/MAINTAINERS gdb/NEWS gdb/README gdb/acinclude.m4 gdb/aclocal.m4 gdb/ada-exp.y gdb/ada-tasks.c gdb/ada-valprint.c gdb/arch-utils.c gdb/arm-tdep.c gdb/avr-tdep.c gdb/blockframe.c gdb/c-exp.y gdb/charset.c gdb/charset.h gdb/cli/cli-cmds.c gdb/complaints.c gdb/complaints.h gdb/config/djgpp/fnchange.lst gdb/config/h8300/tm-h8300.h gdb/config/i386/tm-fbsd.h gdb/config/mips/tm-irix6.h gdb/config/mips/tm-mips.h gdb/configure gdb/configure.in gdb/cp-support.c gdb/cp-support.h gdb/cp-valprint.c gdb/d10v-tdep.c gdb/defs.h gdb/doc/ChangeLog gdb/doc/gdb.texinfo gdb/doc/gdbint.texinfo gdb/elfread.c gdb/event-loop.c gdb/event-loop.h gdb/exec.c gdb/expression.h gdb/frame.c gdb/frame.h gdb/gdb.1 gdb/gdb_mbuild.sh gdb/gdbarch.c gdb/gdbarch.h gdb/gdbarch.sh gdb/gdbtypes.c gdb/gdbtypes.h gdb/h8300-tdep.c gdb/i386-linux-tdep.h gdb/i386-tdep.c gdb/i386bsd-tdep.c gdb/i386nbsd-tdep.c gdb/ia64-tdep.c gdb/infcmd.c gdb/inflow.c gdb/infrun.c gdb/infttrace.c gdb/jv-exp.y gdb/language.c gdb/language.h gdb/linespec.c gdb/m32r-stub.c gdb/m32r-tdep.c gdb/macroscope.c gdb/maint.c gdb/mi/mi-main.c gdb/mips-linux-nat.c gdb/mips-linux-tdep.c gdb/mips-tdep.c gdb/mipsnbsd-tdep.c gdb/objc-exp.y gdb/objc-lang.c gdb/objc-lang.h gdb/osabi.c gdb/osabi.h gdb/p-exp.y gdb/p-valprint.c gdb/parse.c gdb/parser-defs.h gdb/procfs.c gdb/remote-hms.c gdb/rs6000-tdep.c gdb/s390-tdep.c gdb/scm-lang.c gdb/sh-tdep.c gdb/source.c gdb/source.h gdb/stabsread.c gdb/testsuite/config/mips-idt.exp gdb/testsuite/config/mips.exp gdb/testsuite/config/nind.exp gdb/testsuite/config/slite.exp gdb/testsuite/config/sparclet.exp gdb/testsuite/config/udi.exp gdb/testsuite/config/vx.exp gdb/testsuite/config/vxworks29k.exp gdb/testsuite/gdb.base/call-strs.exp gdb/testsuite/gdb.base/charset.c gdb/testsuite/gdb.base/charset.exp gdb/testsuite/gdb.base/commands.exp gdb/testsuite/gdb.base/default.exp gdb/testsuite/gdb.base/ena-dis-br.exp gdb/testsuite/gdb.base/ending-run.exp gdb/testsuite/gdb.base/maint.exp gdb/testsuite/gdb.base/printcmds.exp gdb/testsuite/gdb.c++/m-static.cc gdb/testsuite/gdb.c++/m-static.exp gdb/testsuite/gdb.c++/m-static.h gdb/testsuite/gdb.c++/m-static1.cc gdb/testsuite/gdb.c++/pr-574.cc gdb/testsuite/gdb.c++/pr-574.exp gdb/testsuite/gdb.c++/printmethod.cc gdb/testsuite/gdb.c++/printmethod.exp gdb/testsuite/gdb.gdb/complaints.exp gdb/testsuite/gdb.mi/ChangeLog gdb/testsuite/gdb.mi/gdb701.c gdb/testsuite/gdb.mi/gdb701.exp gdb/testsuite/gdb.mi/mi-console.exp gdb/testsuite/gdb.mi/mi-simplerun.exp gdb/testsuite/gdb.mi/mi-var-block.exp gdb/testsuite/gdb.mi/mi-var-child.exp gdb/testsuite/gdb.mi/mi-var-cmd.exp gdb/testsuite/gdb.mi/mi-var-display.exp gdb/testsuite/gdb.mi/mi0-console.exp gdb/testsuite/gdb.mi/mi0-simplerun.exp gdb/testsuite/gdb.mi/mi0-var-child.exp gdb/testsuite/gdb.mi/mi0-var-cmd.exp gdb/testsuite/gdb.mi/mi0-var-display.exp gdb/testsuite/gdb.threads/killed.exp gdb/testsuite/lib/gdb.exp gdb/testsuite/lib/mi-support.exp gdb/top.c gdb/tui/ChangeLog gdb/tui/tui-hooks.c gdb/tui/tui.c gdb/tui/tuiIO.c gdb/tui/tuiIO.h gdb/tui/tuiStack.c gdb/utils.c gdb/v850-tdep.c gdb/value.h gdb/values.c gdb/version.in gdb/win32-nat.c gdb/x86-64-linux-nat.c gdb/x86-64-tdep.c gdb/xstormy16-tdep.c include/ChangeLog include/dis-asm.h include/elf/ChangeLog include/elf/dwarf2.h include/elf/i386.h include/libiberty.h libiberty/ChangeLog libiberty/README libiberty/cp-demangle.c libiberty/cplus-dem.c libiberty/fibheap.c libiberty/md5.c libiberty/regex.c libiberty/safe-ctype.c libiberty/splay-tree.c libiberty/testsuite/Makefile.in libiberty/testsuite/demangle-expected libiberty/testsuite/test-demangle.c libiberty/vasprintf.c opcodes/ChangeLog opcodes/disassemble.c opcodes/po/da.po opcodes/ppc-dis.c opcodes/ppc-opc.c opcodes/tic4x-dis.c sim/v850/ChangeLog sim/v850/interp.c sim/v850/v850-dc sim/v850/v850.igen
Diffstat (limited to 'gdb/procfs.c')
-rw-r--r--gdb/procfs.c5894
1 files changed, 5894 insertions, 0 deletions
diff --git a/gdb/procfs.c b/gdb/procfs.c
new file mode 100644
index 0000000..fe59876
--- /dev/null
+++ b/gdb/procfs.c
@@ -0,0 +1,5894 @@
+/* Machine independent support for SVR4 /proc (process file system) for GDB.
+ Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
+ Written by Michael Snyder at Cygnus Solutions.
+ Based on work by Fred Fish, Stu Grossman, Geoff Noer, and others.
+
+This file is part of GDB.
+
+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. */
+
+#include "defs.h"
+#include "inferior.h"
+#include "target.h"
+#include "gdbcore.h"
+#include "elf-bfd.h" /* for elfcore_write_* */
+#include "gdbcmd.h"
+#include "gdbthread.h"
+
+#if defined (NEW_PROC_API)
+#define _STRUCTURED_PROC 1 /* Should be done by configure script. */
+#endif
+
+#include <sys/procfs.h>
+#ifdef HAVE_SYS_FAULT_H
+#include <sys/fault.h>
+#endif
+#ifdef HAVE_SYS_SYSCALL_H
+#include <sys/syscall.h>
+#endif
+#include <sys/errno.h>
+#include <sys/wait.h>
+#include <signal.h>
+#include <ctype.h>
+
+/*
+ * PROCFS.C
+ *
+ * This module provides the interface between GDB and the
+ * /proc file system, which is used on many versions of Unix
+ * as a means for debuggers to control other processes.
+ * Examples of the systems that use this interface are:
+ * Irix
+ * Solaris
+ * OSF
+ * Unixware
+ * AIX5
+ *
+ * /proc works by imitating a file system: you open a simulated file
+ * that represents the process you wish to interact with, and
+ * perform operations on that "file" in order to examine or change
+ * the state of the other process.
+ *
+ * The most important thing to know about /proc and this module
+ * is that there are two very different interfaces to /proc:
+ * One that uses the ioctl system call, and
+ * another that uses read and write system calls.
+ * This module has to support both /proc interfaces. This means
+ * that there are two different ways of doing every basic operation.
+ *
+ * In order to keep most of the code simple and clean, I have
+ * defined an interface "layer" which hides all these system calls.
+ * An ifdef (NEW_PROC_API) determines which interface we are using,
+ * and most or all occurrances of this ifdef should be confined to
+ * this interface layer.
+ */
+
+
+/* Determine which /proc API we are using:
+ The ioctl API defines PIOCSTATUS, while
+ the read/write (multiple fd) API never does. */
+
+#ifdef NEW_PROC_API
+#include <sys/types.h>
+#include "gdb_dirent.h" /* opendir/readdir, for listing the LWP's */
+#endif
+
+#include <fcntl.h> /* for O_RDONLY */
+#include <unistd.h> /* for "X_OK" */
+#include "gdb_stat.h" /* for struct stat */
+
+/* Note: procfs-utils.h must be included after the above system header
+ files, because it redefines various system calls using macros.
+ This may be incompatible with the prototype declarations. */
+
+#include "proc-utils.h"
+
+/* Prototypes for supply_gregset etc. */
+#include "gregset.h"
+
+/* =================== TARGET_OPS "MODULE" =================== */
+
+/*
+ * This module defines the GDB target vector and its methods.
+ */
+
+static void procfs_open (char *, int);
+static void procfs_attach (char *, int);
+static void procfs_detach (char *, int);
+static void procfs_resume (ptid_t, int, enum target_signal);
+static int procfs_can_run (void);
+static void procfs_stop (void);
+static void procfs_files_info (struct target_ops *);
+static void procfs_fetch_registers (int);
+static void procfs_store_registers (int);
+static void procfs_notice_signals (ptid_t);
+static void procfs_prepare_to_store (void);
+static void procfs_kill_inferior (void);
+static void procfs_mourn_inferior (void);
+static void procfs_create_inferior (char *, char *, char **);
+static ptid_t procfs_wait (ptid_t, struct target_waitstatus *);
+static int procfs_xfer_memory (CORE_ADDR, char *, int, int,
+ struct mem_attrib *attrib,
+ struct target_ops *);
+
+static int procfs_thread_alive (ptid_t);
+
+void procfs_find_new_threads (void);
+char *procfs_pid_to_str (ptid_t);
+
+static int proc_find_memory_regions (int (*) (CORE_ADDR,
+ unsigned long,
+ int, int, int,
+ void *),
+ void *);
+
+static char * procfs_make_note_section (bfd *, int *);
+
+static int procfs_can_use_hw_breakpoint (int, int, int);
+
+struct target_ops procfs_ops; /* the target vector */
+
+static void
+init_procfs_ops (void)
+{
+ procfs_ops.to_shortname = "procfs";
+ procfs_ops.to_longname = "Unix /proc child process";
+ procfs_ops.to_doc =
+ "Unix /proc child process (started by the \"run\" command).";
+ procfs_ops.to_open = procfs_open;
+ procfs_ops.to_can_run = procfs_can_run;
+ procfs_ops.to_create_inferior = procfs_create_inferior;
+ procfs_ops.to_kill = procfs_kill_inferior;
+ procfs_ops.to_mourn_inferior = procfs_mourn_inferior;
+ procfs_ops.to_attach = procfs_attach;
+ procfs_ops.to_detach = procfs_detach;
+ procfs_ops.to_wait = procfs_wait;
+ procfs_ops.to_resume = procfs_resume;
+ procfs_ops.to_prepare_to_store = procfs_prepare_to_store;
+ procfs_ops.to_fetch_registers = procfs_fetch_registers;
+ procfs_ops.to_store_registers = procfs_store_registers;
+ procfs_ops.to_xfer_memory = procfs_xfer_memory;
+ procfs_ops.to_insert_breakpoint = memory_insert_breakpoint;
+ procfs_ops.to_remove_breakpoint = memory_remove_breakpoint;
+ procfs_ops.to_notice_signals = procfs_notice_signals;
+ procfs_ops.to_files_info = procfs_files_info;
+ procfs_ops.to_stop = procfs_stop;
+
+ procfs_ops.to_terminal_init = terminal_init_inferior;
+ procfs_ops.to_terminal_inferior = terminal_inferior;
+ procfs_ops.to_terminal_ours_for_output = terminal_ours_for_output;
+ procfs_ops.to_terminal_ours = terminal_ours;
+ procfs_ops.to_terminal_save_ours = terminal_save_ours;
+ procfs_ops.to_terminal_info = child_terminal_info;
+
+ procfs_ops.to_find_new_threads = procfs_find_new_threads;
+ procfs_ops.to_thread_alive = procfs_thread_alive;
+ procfs_ops.to_pid_to_str = procfs_pid_to_str;
+
+ procfs_ops.to_has_all_memory = 1;
+ procfs_ops.to_has_memory = 1;
+ procfs_ops.to_has_execution = 1;
+ procfs_ops.to_has_stack = 1;
+ procfs_ops.to_has_registers = 1;
+ procfs_ops.to_stratum = process_stratum;
+ procfs_ops.to_has_thread_control = tc_schedlock;
+ procfs_ops.to_find_memory_regions = proc_find_memory_regions;
+ procfs_ops.to_make_corefile_notes = procfs_make_note_section;
+ procfs_ops.to_can_use_hw_breakpoint = procfs_can_use_hw_breakpoint;
+ procfs_ops.to_magic = OPS_MAGIC;
+}
+
+/* =================== END, TARGET_OPS "MODULE" =================== */
+
+/*
+ * World Unification:
+ *
+ * Put any typedefs, defines etc. here that are required for
+ * the unification of code that handles different versions of /proc.
+ */
+
+#ifdef NEW_PROC_API /* Solaris 7 && 8 method for watchpoints */
+#ifdef WA_READ
+ enum { READ_WATCHFLAG = WA_READ,
+ WRITE_WATCHFLAG = WA_WRITE,
+ EXEC_WATCHFLAG = WA_EXEC,
+ AFTER_WATCHFLAG = WA_TRAPAFTER
+ };
+#endif
+#else /* Irix method for watchpoints */
+ enum { READ_WATCHFLAG = MA_READ,
+ WRITE_WATCHFLAG = MA_WRITE,
+ EXEC_WATCHFLAG = MA_EXEC,
+ AFTER_WATCHFLAG = 0 /* trapafter not implemented */
+ };
+#endif
+
+/* gdb_sigset_t */
+#ifdef HAVE_PR_SIGSET_T
+typedef pr_sigset_t gdb_sigset_t;
+#else
+typedef sigset_t gdb_sigset_t;
+#endif
+
+/* sigaction */
+#ifdef HAVE_PR_SIGACTION64_T
+typedef pr_sigaction64_t gdb_sigaction_t;
+#else
+typedef struct sigaction gdb_sigaction_t;
+#endif
+
+/* siginfo */
+#ifdef HAVE_PR_SIGINFO64_T
+typedef pr_siginfo64_t gdb_siginfo_t;
+#else
+typedef struct siginfo gdb_siginfo_t;
+#endif
+
+/* gdb_premptysysset */
+#ifdef premptysysset
+#define gdb_premptysysset premptysysset
+#else
+#define gdb_premptysysset premptyset
+#endif
+
+/* praddsysset */
+#ifdef praddsysset
+#define gdb_praddsysset praddsysset
+#else
+#define gdb_praddsysset praddset
+#endif
+
+/* prdelsysset */
+#ifdef prdelsysset
+#define gdb_prdelsysset prdelsysset
+#else
+#define gdb_prdelsysset prdelset
+#endif
+
+/* prissyssetmember */
+#ifdef prissyssetmember
+#define gdb_pr_issyssetmember prissyssetmember
+#else
+#define gdb_pr_issyssetmember prismember
+#endif
+
+/* As a feature test, saying ``#if HAVE_PRSYSENT_T'' everywhere isn't
+ as intuitively descriptive as it could be, so we'll define
+ DYNAMIC_SYSCALLS to mean the same thing. Anyway, at the time of
+ this writing, this feature is only found on AIX5 systems and
+ basically means that the set of syscalls is not fixed. I.e,
+ there's no nice table that one can #include to get all of the
+ syscall numbers. Instead, they're stored in /proc/PID/sysent
+ for each process. We are at least guaranteed that they won't
+ change over the lifetime of the process. But each process could
+ (in theory) have different syscall numbers.
+*/
+#ifdef HAVE_PRSYSENT_T
+#define DYNAMIC_SYSCALLS
+#endif
+
+
+
+/* =================== STRUCT PROCINFO "MODULE" =================== */
+
+ /* FIXME: this comment will soon be out of date W.R.T. threads. */
+
+/* The procinfo struct is a wrapper to hold all the state information
+ concerning a /proc process. There should be exactly one procinfo
+ for each process, and since GDB currently can debug only one
+ process at a time, that means there should be only one procinfo.
+ All of the LWP's of a process can be accessed indirectly thru the
+ single process procinfo.
+
+ However, against the day when GDB may debug more than one process,
+ this data structure is kept in a list (which for now will hold no
+ more than one member), and many functions will have a pointer to a
+ procinfo as an argument.
+
+ There will be a separate procinfo structure for use by the (not yet
+ implemented) "info proc" command, so that we can print useful
+ information about any random process without interfering with the
+ inferior's procinfo information. */
+
+#ifdef NEW_PROC_API
+/* format strings for /proc paths */
+# ifndef CTL_PROC_NAME_FMT
+# define MAIN_PROC_NAME_FMT "/proc/%d"
+# define CTL_PROC_NAME_FMT "/proc/%d/ctl"
+# define AS_PROC_NAME_FMT "/proc/%d/as"
+# define MAP_PROC_NAME_FMT "/proc/%d/map"
+# define STATUS_PROC_NAME_FMT "/proc/%d/status"
+# define MAX_PROC_NAME_SIZE sizeof("/proc/99999/lwp/8096/lstatus")
+# endif
+/* the name of the proc status struct depends on the implementation */
+typedef pstatus_t gdb_prstatus_t;
+typedef lwpstatus_t gdb_lwpstatus_t;
+#else /* ! NEW_PROC_API */
+/* format strings for /proc paths */
+# ifndef CTL_PROC_NAME_FMT
+# define MAIN_PROC_NAME_FMT "/proc/%05d"
+# define CTL_PROC_NAME_FMT "/proc/%05d"
+# define AS_PROC_NAME_FMT "/proc/%05d"
+# define MAP_PROC_NAME_FMT "/proc/%05d"
+# define STATUS_PROC_NAME_FMT "/proc/%05d"
+# define MAX_PROC_NAME_SIZE sizeof("/proc/ttttppppp")
+# endif
+/* the name of the proc status struct depends on the implementation */
+typedef prstatus_t gdb_prstatus_t;
+typedef prstatus_t gdb_lwpstatus_t;
+#endif /* NEW_PROC_API */
+
+typedef struct procinfo {
+ struct procinfo *next;
+ int pid; /* Process ID */
+ int tid; /* Thread/LWP id */
+
+ /* process state */
+ int was_stopped;
+ int ignore_next_sigstop;
+
+ /* The following four fd fields may be identical, or may contain
+ several different fd's, depending on the version of /proc
+ (old ioctl or new read/write). */
+
+ int ctl_fd; /* File descriptor for /proc control file */
+ /*
+ * The next three file descriptors are actually only needed in the
+ * read/write, multiple-file-descriptor implemenation (NEW_PROC_API).
+ * However, to avoid a bunch of #ifdefs in the code, we will use
+ * them uniformly by (in the case of the ioctl single-file-descriptor
+ * implementation) filling them with copies of the control fd.
+ */
+ int status_fd; /* File descriptor for /proc status file */
+ int as_fd; /* File descriptor for /proc as file */
+
+ char pathname[MAX_PROC_NAME_SIZE]; /* Pathname to /proc entry */
+
+ fltset_t saved_fltset; /* Saved traced hardware fault set */
+ gdb_sigset_t saved_sigset; /* Saved traced signal set */
+ gdb_sigset_t saved_sighold; /* Saved held signal set */
+ sysset_t *saved_exitset; /* Saved traced system call exit set */
+ sysset_t *saved_entryset; /* Saved traced system call entry set */
+
+ gdb_prstatus_t prstatus; /* Current process status info */
+
+#ifndef NEW_PROC_API
+ gdb_fpregset_t fpregset; /* Current floating point registers */
+#endif
+
+#ifdef DYNAMIC_SYSCALLS
+ int num_syscalls; /* Total number of syscalls */
+ char **syscall_names; /* Syscall number to name map */
+#endif
+
+ struct procinfo *thread_list;
+
+ int status_valid : 1;
+ int gregs_valid : 1;
+ int fpregs_valid : 1;
+ int threads_valid: 1;
+} procinfo;
+
+static char errmsg[128]; /* shared error msg buffer */
+
+/* Function prototypes for procinfo module: */
+
+static procinfo *find_procinfo_or_die (int pid, int tid);
+static procinfo *find_procinfo (int pid, int tid);
+static procinfo *create_procinfo (int pid, int tid);
+static void destroy_procinfo (procinfo * p);
+static void do_destroy_procinfo_cleanup (void *);
+static void dead_procinfo (procinfo * p, char *msg, int killp);
+static int open_procinfo_files (procinfo * p, int which);
+static void close_procinfo_files (procinfo * p);
+static int sysset_t_size (procinfo *p);
+static sysset_t *sysset_t_alloc (procinfo * pi);
+#ifdef DYNAMIC_SYSCALLS
+static void load_syscalls (procinfo *pi);
+static void free_syscalls (procinfo *pi);
+static int find_syscall (procinfo *pi, char *name);
+#endif /* DYNAMIC_SYSCALLS */
+
+/* The head of the procinfo list: */
+static procinfo * procinfo_list;
+
+/*
+ * Function: find_procinfo
+ *
+ * Search the procinfo list.
+ *
+ * Returns: pointer to procinfo, or NULL if not found.
+ */
+
+static procinfo *
+find_procinfo (int pid, int tid)
+{
+ procinfo *pi;
+
+ for (pi = procinfo_list; pi; pi = pi->next)
+ if (pi->pid == pid)
+ break;
+
+ if (pi)
+ if (tid)
+ {
+ /* Don't check threads_valid. If we're updating the
+ thread_list, we want to find whatever threads are already
+ here. This means that in general it is the caller's
+ responsibility to check threads_valid and update before
+ calling find_procinfo, if the caller wants to find a new
+ thread. */
+
+ for (pi = pi->thread_list; pi; pi = pi->next)
+ if (pi->tid == tid)
+ break;
+ }
+
+ return pi;
+}
+
+/*
+ * Function: find_procinfo_or_die
+ *
+ * Calls find_procinfo, but errors on failure.
+ */
+
+static procinfo *
+find_procinfo_or_die (int pid, int tid)
+{
+ procinfo *pi = find_procinfo (pid, tid);
+
+ if (pi == NULL)
+ {
+ if (tid)
+ error ("procfs: couldn't find pid %d (kernel thread %d) in procinfo list.",
+ pid, tid);
+ else
+ error ("procfs: couldn't find pid %d in procinfo list.", pid);
+ }
+ return pi;
+}
+
+/* open_with_retry() is a wrapper for open(). The appropriate
+ open() call is attempted; if unsuccessful, it will be retried as
+ many times as needed for the EAGAIN and EINTR conditions.
+
+ For other conditions, open_with_retry() will retry the open() a
+ limited number of times. In addition, a short sleep is imposed
+ prior to retrying the open(). The reason for this sleep is to give
+ the kernel a chance to catch up and create the file in question in
+ the event that GDB "wins" the race to open a file before the kernel
+ has created it. */
+
+static int
+open_with_retry (const char *pathname, int flags)
+{
+ int retries_remaining, status;
+
+ retries_remaining = 2;
+
+ while (1)
+ {
+ status = open (pathname, flags);
+
+ if (status >= 0 || retries_remaining == 0)
+ break;
+ else if (errno != EINTR && errno != EAGAIN)
+ {
+ retries_remaining--;
+ sleep (1);
+ }
+ }
+
+ return status;
+}
+
+/*
+ * Function: open_procinfo_files
+ *
+ * Open the file descriptor for the process or LWP.
+ * ifdef NEW_PROC_API, we only open the control file descriptor;
+ * the others are opened lazily as needed.
+ * else (if not NEW_PROC_API), there is only one real
+ * file descriptor, but we keep multiple copies of it so that
+ * the code that uses them does not have to be #ifdef'd.
+ *
+ * Return: file descriptor, or zero for failure.
+ */
+
+enum { FD_CTL, FD_STATUS, FD_AS };
+
+static int
+open_procinfo_files (procinfo *pi, int which)
+{
+#ifdef NEW_PROC_API
+ char tmp[MAX_PROC_NAME_SIZE];
+#endif
+ int fd;
+
+ /*
+ * This function is getting ALMOST long enough to break up into several.
+ * Here is some rationale:
+ *
+ * NEW_PROC_API (Solaris 2.6, Solaris 2.7, Unixware):
+ * There are several file descriptors that may need to be open
+ * for any given process or LWP. The ones we're intereted in are:
+ * - control (ctl) write-only change the state
+ * - status (status) read-only query the state
+ * - address space (as) read/write access memory
+ * - map (map) read-only virtual addr map
+ * Most of these are opened lazily as they are needed.
+ * The pathnames for the 'files' for an LWP look slightly
+ * different from those of a first-class process:
+ * Pathnames for a process (<proc-id>):
+ * /proc/<proc-id>/ctl
+ * /proc/<proc-id>/status
+ * /proc/<proc-id>/as
+ * /proc/<proc-id>/map
+ * Pathnames for an LWP (lwp-id):
+ * /proc/<proc-id>/lwp/<lwp-id>/lwpctl
+ * /proc/<proc-id>/lwp/<lwp-id>/lwpstatus
+ * An LWP has no map or address space file descriptor, since
+ * the memory map and address space are shared by all LWPs.
+ *
+ * Everyone else (Solaris 2.5, Irix, OSF)
+ * There is only one file descriptor for each process or LWP.
+ * For convenience, we copy the same file descriptor into all
+ * three fields of the procinfo struct (ctl_fd, status_fd, and
+ * as_fd, see NEW_PROC_API above) so that code that uses them
+ * doesn't need any #ifdef's.
+ * Pathname for all:
+ * /proc/<proc-id>
+ *
+ * Solaris 2.5 LWP's:
+ * Each LWP has an independent file descriptor, but these
+ * are not obtained via the 'open' system call like the rest:
+ * instead, they're obtained thru an ioctl call (PIOCOPENLWP)
+ * to the file descriptor of the parent process.
+ *
+ * OSF threads:
+ * These do not even have their own independent file descriptor.
+ * All operations are carried out on the file descriptor of the
+ * parent process. Therefore we just call open again for each
+ * thread, getting a new handle for the same 'file'.
+ */
+
+#ifdef NEW_PROC_API
+ /*
+ * In this case, there are several different file descriptors that
+ * we might be asked to open. The control file descriptor will be
+ * opened early, but the others will be opened lazily as they are
+ * needed.
+ */
+
+ strcpy (tmp, pi->pathname);
+ switch (which) { /* which file descriptor to open? */
+ case FD_CTL:
+ if (pi->tid)
+ strcat (tmp, "/lwpctl");
+ else
+ strcat (tmp, "/ctl");
+ fd = open_with_retry (tmp, O_WRONLY);
+ if (fd <= 0)
+ return 0; /* fail */
+ pi->ctl_fd = fd;
+ break;
+ case FD_AS:
+ if (pi->tid)
+ return 0; /* there is no 'as' file descriptor for an lwp */
+ strcat (tmp, "/as");
+ fd = open_with_retry (tmp, O_RDWR);
+ if (fd <= 0)
+ return 0; /* fail */
+ pi->as_fd = fd;
+ break;
+ case FD_STATUS:
+ if (pi->tid)
+ strcat (tmp, "/lwpstatus");
+ else
+ strcat (tmp, "/status");
+ fd = open_with_retry (tmp, O_RDONLY);
+ if (fd <= 0)
+ return 0; /* fail */
+ pi->status_fd = fd;
+ break;
+ default:
+ return 0; /* unknown file descriptor */
+ }
+#else /* not NEW_PROC_API */
+ /*
+ * In this case, there is only one file descriptor for each procinfo
+ * (ie. each process or LWP). In fact, only the file descriptor for
+ * the process can actually be opened by an 'open' system call.
+ * The ones for the LWPs have to be obtained thru an IOCTL call
+ * on the process's file descriptor.
+ *
+ * For convenience, we copy each procinfo's single file descriptor
+ * into all of the fields occupied by the several file descriptors
+ * of the NEW_PROC_API implementation. That way, the code that uses
+ * them can be written without ifdefs.
+ */
+
+
+#ifdef PIOCTSTATUS /* OSF */
+ /* Only one FD; just open it. */
+ if ((fd = open_with_retry (pi->pathname, O_RDWR)) == 0)
+ return 0;
+#else /* Sol 2.5, Irix, other? */
+ if (pi->tid == 0) /* Master procinfo for the process */
+ {
+ fd = open_with_retry (pi->pathname, O_RDWR);
+ if (fd <= 0)
+ return 0; /* fail */
+ }
+ else /* LWP thread procinfo */
+ {
+#ifdef PIOCOPENLWP /* Sol 2.5, thread/LWP */
+ procinfo *process;
+ int lwpid = pi->tid;
+
+ /* Find the procinfo for the entire process. */
+ if ((process = find_procinfo (pi->pid, 0)) == NULL)
+ return 0; /* fail */
+
+ /* Now obtain the file descriptor for the LWP. */
+ if ((fd = ioctl (process->ctl_fd, PIOCOPENLWP, &lwpid)) <= 0)
+ return 0; /* fail */
+#else /* Irix, other? */
+ return 0; /* Don't know how to open threads */
+#endif /* Sol 2.5 PIOCOPENLWP */
+ }
+#endif /* OSF PIOCTSTATUS */
+ pi->ctl_fd = pi->as_fd = pi->status_fd = fd;
+#endif /* NEW_PROC_API */
+
+ return 1; /* success */
+}
+
+/*
+ * Function: create_procinfo
+ *
+ * Allocate a data structure and link it into the procinfo list.
+ * (First tries to find a pre-existing one (FIXME: why?)
+ *
+ * Return: pointer to new procinfo struct.
+ */
+
+static procinfo *
+create_procinfo (int pid, int tid)
+{
+ procinfo *pi, *parent;
+
+ if ((pi = find_procinfo (pid, tid)))
+ return pi; /* Already exists, nothing to do. */
+
+ /* find parent before doing malloc, to save having to cleanup */
+ if (tid != 0)
+ parent = find_procinfo_or_die (pid, 0); /* FIXME: should I
+ create it if it
+ doesn't exist yet? */
+
+ pi = (procinfo *) xmalloc (sizeof (procinfo));
+ memset (pi, 0, sizeof (procinfo));
+ pi->pid = pid;
+ pi->tid = tid;
+
+#ifdef DYNAMIC_SYSCALLS
+ load_syscalls (pi);
+#endif
+
+ pi->saved_entryset = sysset_t_alloc (pi);
+ pi->saved_exitset = sysset_t_alloc (pi);
+
+ /* Chain into list. */
+ if (tid == 0)
+ {
+ sprintf (pi->pathname, MAIN_PROC_NAME_FMT, pid);
+ pi->next = procinfo_list;
+ procinfo_list = pi;
+ }
+ else
+ {
+#ifdef NEW_PROC_API
+ sprintf (pi->pathname, "/proc/%05d/lwp/%d", pid, tid);
+#else
+ sprintf (pi->pathname, MAIN_PROC_NAME_FMT, pid);
+#endif
+ pi->next = parent->thread_list;
+ parent->thread_list = pi;
+ }
+ return pi;
+}
+
+/*
+ * Function: close_procinfo_files
+ *
+ * Close all file descriptors associated with the procinfo
+ */
+
+static void
+close_procinfo_files (procinfo *pi)
+{
+ if (pi->ctl_fd > 0)
+ close (pi->ctl_fd);
+#ifdef NEW_PROC_API
+ if (pi->as_fd > 0)
+ close (pi->as_fd);
+ if (pi->status_fd > 0)
+ close (pi->status_fd);
+#endif
+ pi->ctl_fd = pi->as_fd = pi->status_fd = 0;
+}
+
+/*
+ * Function: destroy_procinfo
+ *
+ * Destructor function. Close, unlink and deallocate the object.
+ */
+
+static void
+destroy_one_procinfo (procinfo **list, procinfo *pi)
+{
+ procinfo *ptr;
+
+ /* Step one: unlink the procinfo from its list */
+ if (pi == *list)
+ *list = pi->next;
+ else
+ for (ptr = *list; ptr; ptr = ptr->next)
+ if (ptr->next == pi)
+ {
+ ptr->next = pi->next;
+ break;
+ }
+
+ /* Step two: close any open file descriptors */
+ close_procinfo_files (pi);
+
+ /* Step three: free the memory. */
+#ifdef DYNAMIC_SYSCALLS
+ free_syscalls (pi);
+#endif
+ xfree (pi->saved_entryset);
+ xfree (pi->saved_exitset);
+ xfree (pi);
+}
+
+static void
+destroy_procinfo (procinfo *pi)
+{
+ procinfo *tmp;
+
+ if (pi->tid != 0) /* destroy a thread procinfo */
+ {
+ tmp = find_procinfo (pi->pid, 0); /* find the parent process */
+ destroy_one_procinfo (&tmp->thread_list, pi);
+ }
+ else /* destroy a process procinfo and all its threads */
+ {
+ /* First destroy the children, if any; */
+ while (pi->thread_list != NULL)
+ destroy_one_procinfo (&pi->thread_list, pi->thread_list);
+ /* Then destroy the parent. Genocide!!! */
+ destroy_one_procinfo (&procinfo_list, pi);
+ }
+}
+
+static void
+do_destroy_procinfo_cleanup (void *pi)
+{
+ destroy_procinfo (pi);
+}
+
+enum { NOKILL, KILL };
+
+/*
+ * Function: dead_procinfo
+ *
+ * To be called on a non_recoverable error for a procinfo.
+ * Prints error messages, optionally sends a SIGKILL to the process,
+ * then destroys the data structure.
+ */
+
+static void
+dead_procinfo (procinfo *pi, char *msg, int kill_p)
+{
+ char procfile[80];
+
+ if (pi->pathname)
+ {
+ print_sys_errmsg (pi->pathname, errno);
+ }
+ else
+ {
+ sprintf (procfile, "process %d", pi->pid);
+ print_sys_errmsg (procfile, errno);
+ }
+ if (kill_p == KILL)
+ kill (pi->pid, SIGKILL);
+
+ destroy_procinfo (pi);
+ error (msg);
+}
+
+/*
+ * Function: sysset_t_size
+ *
+ * Returns the (complete) size of a sysset_t struct. Normally, this
+ * is just sizeof (syset_t), but in the case of Monterey/64, the actual
+ * size of sysset_t isn't known until runtime.
+ */
+
+static int
+sysset_t_size (procinfo * pi)
+{
+#ifndef DYNAMIC_SYSCALLS
+ return sizeof (sysset_t);
+#else
+ return sizeof (sysset_t) - sizeof (uint64_t)
+ + sizeof (uint64_t) * ((pi->num_syscalls + (8 * sizeof (uint64_t) - 1))
+ / (8 * sizeof (uint64_t)));
+#endif
+}
+
+/* Function: sysset_t_alloc
+
+ Allocate and (partially) initialize a sysset_t struct. */
+
+static sysset_t *
+sysset_t_alloc (procinfo * pi)
+{
+ sysset_t *ret;
+ int size = sysset_t_size (pi);
+ ret = xmalloc (size);
+#ifdef DYNAMIC_SYSCALLS
+ ret->pr_size = (pi->num_syscalls + (8 * sizeof (uint64_t) - 1))
+ / (8 * sizeof (uint64_t));
+#endif
+ return ret;
+}
+
+#ifdef DYNAMIC_SYSCALLS
+
+/* Function: load_syscalls
+
+ Extract syscall numbers and names from /proc/<pid>/sysent. Initialize
+ pi->num_syscalls with the number of syscalls and pi->syscall_names
+ with the names. (Certain numbers may be skipped in which case the
+ names for these numbers will be left as NULL.) */
+
+#define MAX_SYSCALL_NAME_LENGTH 256
+#define MAX_SYSCALLS 65536
+
+static void
+load_syscalls (procinfo *pi)
+{
+ char pathname[MAX_PROC_NAME_SIZE];
+ int sysent_fd;
+ prsysent_t header;
+ prsyscall_t *syscalls;
+ int i, size, maxcall;
+
+ pi->num_syscalls = 0;
+ pi->syscall_names = 0;
+
+ /* Open the file descriptor for the sysent file */
+ sprintf (pathname, "/proc/%d/sysent", pi->pid);
+ sysent_fd = open_with_retry (pathname, O_RDONLY);
+ if (sysent_fd < 0)
+ {
+ error ("load_syscalls: Can't open /proc/%d/sysent", pi->pid);
+ }
+
+ size = sizeof header - sizeof (prsyscall_t);
+ if (read (sysent_fd, &header, size) != size)
+ {
+ error ("load_syscalls: Error reading /proc/%d/sysent", pi->pid);
+ }
+
+ if (header.pr_nsyscalls == 0)
+ {
+ error ("load_syscalls: /proc/%d/sysent contains no syscalls!", pi->pid);
+ }
+
+ size = header.pr_nsyscalls * sizeof (prsyscall_t);
+ syscalls = xmalloc (size);
+
+ if (read (sysent_fd, syscalls, size) != size)
+ {
+ xfree (syscalls);
+ error ("load_syscalls: Error reading /proc/%d/sysent", pi->pid);
+ }
+
+ /* Find maximum syscall number. This may not be the same as
+ pr_nsyscalls since that value refers to the number of entries
+ in the table. (Also, the docs indicate that some system
+ call numbers may be skipped.) */
+
+ maxcall = syscalls[0].pr_number;
+
+ for (i = 1; i < header.pr_nsyscalls; i++)
+ if (syscalls[i].pr_number > maxcall
+ && syscalls[i].pr_nameoff > 0
+ && syscalls[i].pr_number < MAX_SYSCALLS)
+ maxcall = syscalls[i].pr_number;
+
+ pi->num_syscalls = maxcall+1;
+ pi->syscall_names = xmalloc (pi->num_syscalls * sizeof (char *));
+
+ for (i = 0; i < pi->num_syscalls; i++)
+ pi->syscall_names[i] = NULL;
+
+ /* Read the syscall names in */
+ for (i = 0; i < header.pr_nsyscalls; i++)
+ {
+ char namebuf[MAX_SYSCALL_NAME_LENGTH];
+ int nread;
+ int callnum;
+
+ if (syscalls[i].pr_number >= MAX_SYSCALLS
+ || syscalls[i].pr_number < 0
+ || syscalls[i].pr_nameoff <= 0
+ || (lseek (sysent_fd, (off_t) syscalls[i].pr_nameoff, SEEK_SET)
+ != (off_t) syscalls[i].pr_nameoff))
+ continue;
+
+ nread = read (sysent_fd, namebuf, sizeof namebuf);
+ if (nread <= 0)
+ continue;
+
+ callnum = syscalls[i].pr_number;
+
+ if (pi->syscall_names[callnum] != NULL)
+ {
+ /* FIXME: Generate warning */
+ continue;
+ }
+
+ namebuf[nread-1] = '\0';
+ size = strlen (namebuf) + 1;
+ pi->syscall_names[callnum] = xmalloc (size);
+ strncpy (pi->syscall_names[callnum], namebuf, size-1);
+ pi->syscall_names[callnum][size-1] = '\0';
+ }
+
+ close (sysent_fd);
+ xfree (syscalls);
+}
+
+/* Function: free_syscalls
+
+ Free the space allocated for the syscall names from the procinfo
+ structure. */
+
+static void
+free_syscalls (procinfo *pi)
+{
+ if (pi->syscall_names)
+ {
+ int i;
+
+ for (i = 0; i < pi->num_syscalls; i++)
+ if (pi->syscall_names[i] != NULL)
+ xfree (pi->syscall_names[i]);
+
+ xfree (pi->syscall_names);
+ pi->syscall_names = 0;
+ }
+}
+
+/* Function: find_syscall
+
+ Given a name, look up (and return) the corresponding syscall number.
+ If no match is found, return -1. */
+
+static int
+find_syscall (procinfo *pi, char *name)
+{
+ int i;
+ for (i = 0; i < pi->num_syscalls; i++)
+ {
+ if (pi->syscall_names[i] && strcmp (name, pi->syscall_names[i]) == 0)
+ return i;
+ }
+ return -1;
+}
+#endif
+
+/* =================== END, STRUCT PROCINFO "MODULE" =================== */
+
+/* =================== /proc "MODULE" =================== */
+
+/*
+ * This "module" is the interface layer between the /proc system API
+ * and the gdb target vector functions. This layer consists of
+ * access functions that encapsulate each of the basic operations
+ * that we need to use from the /proc API.
+ *
+ * The main motivation for this layer is to hide the fact that
+ * there are two very different implementations of the /proc API.
+ * Rather than have a bunch of #ifdefs all thru the gdb target vector
+ * functions, we do our best to hide them all in here.
+ */
+
+int proc_get_status (procinfo * pi);
+long proc_flags (procinfo * pi);
+int proc_why (procinfo * pi);
+int proc_what (procinfo * pi);
+int proc_set_run_on_last_close (procinfo * pi);
+int proc_unset_run_on_last_close (procinfo * pi);
+int proc_set_inherit_on_fork (procinfo * pi);
+int proc_unset_inherit_on_fork (procinfo * pi);
+int proc_set_async (procinfo * pi);
+int proc_unset_async (procinfo * pi);
+int proc_stop_process (procinfo * pi);
+int proc_trace_signal (procinfo * pi, int signo);
+int proc_ignore_signal (procinfo * pi, int signo);
+int proc_clear_current_fault (procinfo * pi);
+int proc_set_current_signal (procinfo * pi, int signo);
+int proc_clear_current_signal (procinfo * pi);
+int proc_set_gregs (procinfo * pi);
+int proc_set_fpregs (procinfo * pi);
+int proc_wait_for_stop (procinfo * pi);
+int proc_run_process (procinfo * pi, int step, int signo);
+int proc_kill (procinfo * pi, int signo);
+int proc_parent_pid (procinfo * pi);
+int proc_get_nthreads (procinfo * pi);
+int proc_get_current_thread (procinfo * pi);
+int proc_set_held_signals (procinfo * pi, gdb_sigset_t * sighold);
+int proc_set_traced_sysexit (procinfo * pi, sysset_t * sysset);
+int proc_set_traced_sysentry (procinfo * pi, sysset_t * sysset);
+int proc_set_traced_faults (procinfo * pi, fltset_t * fltset);
+int proc_set_traced_signals (procinfo * pi, gdb_sigset_t * sigset);
+
+int proc_update_threads (procinfo * pi);
+int proc_iterate_over_threads (procinfo * pi,
+ int (*func) (procinfo *, procinfo *, void *),
+ void *ptr);
+
+gdb_gregset_t *proc_get_gregs (procinfo * pi);
+gdb_fpregset_t *proc_get_fpregs (procinfo * pi);
+sysset_t *proc_get_traced_sysexit (procinfo * pi, sysset_t * save);
+sysset_t *proc_get_traced_sysentry (procinfo * pi, sysset_t * save);
+fltset_t *proc_get_traced_faults (procinfo * pi, fltset_t * save);
+gdb_sigset_t *proc_get_traced_signals (procinfo * pi, gdb_sigset_t * save);
+gdb_sigset_t *proc_get_held_signals (procinfo * pi, gdb_sigset_t * save);
+gdb_sigset_t *proc_get_pending_signals (procinfo * pi, gdb_sigset_t * save);
+gdb_sigaction_t *proc_get_signal_actions (procinfo * pi, gdb_sigaction_t *save);
+
+void proc_warn (procinfo * pi, char *func, int line);
+void proc_error (procinfo * pi, char *func, int line);
+
+void
+proc_warn (procinfo *pi, char *func, int line)
+{
+ sprintf (errmsg, "procfs: %s line %d, %s", func, line, pi->pathname);
+ print_sys_errmsg (errmsg, errno);
+}
+
+void
+proc_error (procinfo *pi, char *func, int line)
+{
+ sprintf (errmsg, "procfs: %s line %d, %s", func, line, pi->pathname);
+ perror_with_name (errmsg);
+}
+
+/*
+ * Function: proc_get_status
+ *
+ * Updates the status struct in the procinfo.
+ * There is a 'valid' flag, to let other functions know when
+ * this function needs to be called (so the status is only
+ * read when it is needed). The status file descriptor is
+ * also only opened when it is needed.
+ *
+ * Return: non-zero for success, zero for failure.
+ */
+
+int
+proc_get_status (procinfo *pi)
+{
+ /* Status file descriptor is opened "lazily" */
+ if (pi->status_fd == 0 &&
+ open_procinfo_files (pi, FD_STATUS) == 0)
+ {
+ pi->status_valid = 0;
+ return 0;
+ }
+
+#ifdef NEW_PROC_API
+ if (lseek (pi->status_fd, 0, SEEK_SET) < 0)
+ pi->status_valid = 0; /* fail */
+ else
+ {
+ /* Sigh... I have to read a different data structure,
+ depending on whether this is a main process or an LWP. */
+ if (pi->tid)
+ pi->status_valid = (read (pi->status_fd,
+ (char *) &pi->prstatus.pr_lwp,
+ sizeof (lwpstatus_t))
+ == sizeof (lwpstatus_t));
+ else
+ {
+ pi->status_valid = (read (pi->status_fd,
+ (char *) &pi->prstatus,
+ sizeof (gdb_prstatus_t))
+ == sizeof (gdb_prstatus_t));
+#if 0 /*def UNIXWARE*/
+ if (pi->status_valid &&
+ (pi->prstatus.pr_lwp.pr_flags & PR_ISTOP) &&
+ pi->prstatus.pr_lwp.pr_why == PR_REQUESTED)
+ /* Unixware peculiarity -- read the damn thing again! */
+ pi->status_valid = (read (pi->status_fd,
+ (char *) &pi->prstatus,
+ sizeof (gdb_prstatus_t))
+ == sizeof (gdb_prstatus_t));
+#endif /* UNIXWARE */
+ }
+ }
+#else /* ioctl method */
+#ifdef PIOCTSTATUS /* osf */
+ if (pi->tid == 0) /* main process */
+ {
+ /* Just read the danged status. Now isn't that simple? */
+ pi->status_valid =
+ (ioctl (pi->status_fd, PIOCSTATUS, &pi->prstatus) >= 0);
+ }
+ else
+ {
+ int win;
+ struct {
+ long pr_count;
+ tid_t pr_error_thread;
+ struct prstatus status;
+ } thread_status;
+
+ thread_status.pr_count = 1;
+ thread_status.status.pr_tid = pi->tid;
+ win = (ioctl (pi->status_fd, PIOCTSTATUS, &thread_status) >= 0);
+ if (win)
+ {
+ memcpy (&pi->prstatus, &thread_status.status,
+ sizeof (pi->prstatus));
+ pi->status_valid = 1;
+ }
+ }
+#else
+ /* Just read the danged status. Now isn't that simple? */
+ pi->status_valid = (ioctl (pi->status_fd, PIOCSTATUS, &pi->prstatus) >= 0);
+#endif
+#endif
+
+ if (pi->status_valid)
+ {
+ PROC_PRETTYFPRINT_STATUS (proc_flags (pi),
+ proc_why (pi),
+ proc_what (pi),
+ proc_get_current_thread (pi));
+ }
+
+ /* The status struct includes general regs, so mark them valid too */
+ pi->gregs_valid = pi->status_valid;
+#ifdef NEW_PROC_API
+ /* In the read/write multiple-fd model,
+ the status struct includes the fp regs too, so mark them valid too */
+ pi->fpregs_valid = pi->status_valid;
+#endif
+ return pi->status_valid; /* True if success, false if failure. */
+}
+
+/*
+ * Function: proc_flags
+ *
+ * returns the process flags (pr_flags field).
+ */
+
+long
+proc_flags (procinfo *pi)
+{
+ if (!pi->status_valid)
+ if (!proc_get_status (pi))
+ return 0; /* FIXME: not a good failure value (but what is?) */
+
+#ifdef NEW_PROC_API
+# ifdef UNIXWARE
+ /* UnixWare 7.1 puts process status flags, e.g. PR_ASYNC, in
+ pstatus_t and LWP status flags, e.g. PR_STOPPED, in lwpstatus_t.
+ The two sets of flags don't overlap. */
+ return pi->prstatus.pr_flags | pi->prstatus.pr_lwp.pr_flags;
+# else
+ return pi->prstatus.pr_lwp.pr_flags;
+# endif
+#else
+ return pi->prstatus.pr_flags;
+#endif
+}
+
+/*
+ * Function: proc_why
+ *
+ * returns the pr_why field (why the process stopped).
+ */
+
+int
+proc_why (procinfo *pi)
+{
+ if (!pi->status_valid)
+ if (!proc_get_status (pi))
+ return 0; /* FIXME: not a good failure value (but what is?) */
+
+#ifdef NEW_PROC_API
+ return pi->prstatus.pr_lwp.pr_why;
+#else
+ return pi->prstatus.pr_why;
+#endif
+}
+
+/*
+ * Function: proc_what
+ *
+ * returns the pr_what field (details of why the process stopped).
+ */
+
+int
+proc_what (procinfo *pi)
+{
+ if (!pi->status_valid)
+ if (!proc_get_status (pi))
+ return 0; /* FIXME: not a good failure value (but what is?) */
+
+#ifdef NEW_PROC_API
+ return pi->prstatus.pr_lwp.pr_what;
+#else
+ return pi->prstatus.pr_what;
+#endif
+}
+
+#ifndef PIOCSSPCACT /* The following is not supported on OSF. */
+/*
+ * Function: proc_nsysarg
+ *
+ * returns the pr_nsysarg field (number of args to the current syscall).
+ */
+
+int
+proc_nsysarg (procinfo *pi)
+{
+ if (!pi->status_valid)
+ if (!proc_get_status (pi))
+ return 0;
+
+#ifdef NEW_PROC_API
+ return pi->prstatus.pr_lwp.pr_nsysarg;
+#else
+ return pi->prstatus.pr_nsysarg;
+#endif
+}
+
+/*
+ * Function: proc_sysargs
+ *
+ * returns the pr_sysarg field (pointer to the arguments of current syscall).
+ */
+
+long *
+proc_sysargs (procinfo *pi)
+{
+ if (!pi->status_valid)
+ if (!proc_get_status (pi))
+ return NULL;
+
+#ifdef NEW_PROC_API
+ return (long *) &pi->prstatus.pr_lwp.pr_sysarg;
+#else
+ return (long *) &pi->prstatus.pr_sysarg;
+#endif
+}
+
+/*
+ * Function: proc_syscall
+ *
+ * returns the pr_syscall field (id of current syscall if we are in one).
+ */
+
+int
+proc_syscall (procinfo *pi)
+{
+ if (!pi->status_valid)
+ if (!proc_get_status (pi))
+ return 0;
+
+#ifdef NEW_PROC_API
+ return pi->prstatus.pr_lwp.pr_syscall;
+#else
+ return pi->prstatus.pr_syscall;
+#endif
+}
+#endif /* PIOCSSPCACT */
+
+/*
+ * Function: proc_cursig:
+ *
+ * returns the pr_cursig field (current signal).
+ */
+
+long
+proc_cursig (struct procinfo *pi)
+{
+ if (!pi->status_valid)
+ if (!proc_get_status (pi))
+ return 0; /* FIXME: not a good failure value (but what is?) */
+
+#ifdef NEW_PROC_API
+ return pi->prstatus.pr_lwp.pr_cursig;
+#else
+ return pi->prstatus.pr_cursig;
+#endif
+}
+
+/*
+ * Function: proc_modify_flag
+ *
+ * === I appologize for the messiness of this function.
+ * === This is an area where the different versions of
+ * === /proc are more inconsistent than usual. MVS
+ *
+ * Set or reset any of the following process flags:
+ * PR_FORK -- forked child will inherit trace flags
+ * PR_RLC -- traced process runs when last /proc file closed.
+ * PR_KLC -- traced process is killed when last /proc file closed.
+ * PR_ASYNC -- LWP's get to run/stop independently.
+ *
+ * There are three methods for doing this function:
+ * 1) Newest: read/write [PCSET/PCRESET/PCUNSET]
+ * [Sol6, Sol7, UW]
+ * 2) Middle: PIOCSET/PIOCRESET
+ * [Irix, Sol5]
+ * 3) Oldest: PIOCSFORK/PIOCRFORK/PIOCSRLC/PIOCRRLC
+ * [OSF, Sol5]
+ *
+ * Note: Irix does not define PR_ASYNC.
+ * Note: OSF does not define PR_KLC.
+ * Note: OSF is the only one that can ONLY use the oldest method.
+ *
+ * Arguments:
+ * pi -- the procinfo
+ * flag -- one of PR_FORK, PR_RLC, or PR_ASYNC
+ * mode -- 1 for set, 0 for reset.
+ *
+ * Returns non-zero for success, zero for failure.
+ */
+
+enum { FLAG_RESET, FLAG_SET };
+
+static int
+proc_modify_flag (procinfo *pi, long flag, long mode)
+{
+ long win = 0; /* default to fail */
+
+ /*
+ * These operations affect the process as a whole, and applying
+ * them to an individual LWP has the same meaning as applying them
+ * to the main process. Therefore, if we're ever called with a
+ * pointer to an LWP's procinfo, let's substitute the process's
+ * procinfo and avoid opening the LWP's file descriptor
+ * unnecessarily.
+ */
+
+ if (pi->pid != 0)
+ pi = find_procinfo_or_die (pi->pid, 0);
+
+#ifdef NEW_PROC_API /* Newest method: UnixWare and newer Solarii */
+ /* First normalize the PCUNSET/PCRESET command opcode
+ (which for no obvious reason has a different definition
+ from one operating system to the next...) */
+#ifdef PCUNSET
+#define GDBRESET PCUNSET
+#else
+#ifdef PCRESET
+#define GDBRESET PCRESET
+#endif
+#endif
+ {
+ procfs_ctl_t arg[2];
+
+ if (mode == FLAG_SET) /* Set the flag (RLC, FORK, or ASYNC) */
+ arg[0] = PCSET;
+ else /* Reset the flag */
+ arg[0] = GDBRESET;
+
+ arg[1] = flag;
+ win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg));
+ }
+#else
+#ifdef PIOCSET /* Irix/Sol5 method */
+ if (mode == FLAG_SET) /* Set the flag (hopefully RLC, FORK, or ASYNC) */
+ {
+ win = (ioctl (pi->ctl_fd, PIOCSET, &flag) >= 0);
+ }
+ else /* Reset the flag */
+ {
+ win = (ioctl (pi->ctl_fd, PIOCRESET, &flag) >= 0);
+ }
+
+#else
+#ifdef PIOCSRLC /* Oldest method: OSF */
+ switch (flag) {
+ case PR_RLC:
+ if (mode == FLAG_SET) /* Set run-on-last-close */
+ {
+ win = (ioctl (pi->ctl_fd, PIOCSRLC, NULL) >= 0);
+ }
+ else /* Clear run-on-last-close */
+ {
+ win = (ioctl (pi->ctl_fd, PIOCRRLC, NULL) >= 0);
+ }
+ break;
+ case PR_FORK:
+ if (mode == FLAG_SET) /* Set inherit-on-fork */
+ {
+ win = (ioctl (pi->ctl_fd, PIOCSFORK, NULL) >= 0);
+ }
+ else /* Clear inherit-on-fork */
+ {
+ win = (ioctl (pi->ctl_fd, PIOCRFORK, NULL) >= 0);
+ }
+ break;
+ default:
+ win = 0; /* fail -- unknown flag (can't do PR_ASYNC) */
+ break;
+ }
+#endif
+#endif
+#endif
+#undef GDBRESET
+ /* The above operation renders the procinfo's cached pstatus obsolete. */
+ pi->status_valid = 0;
+
+ if (!win)
+ warning ("procfs: modify_flag failed to turn %s %s",
+ flag == PR_FORK ? "PR_FORK" :
+ flag == PR_RLC ? "PR_RLC" :
+#ifdef PR_ASYNC
+ flag == PR_ASYNC ? "PR_ASYNC" :
+#endif
+#ifdef PR_KLC
+ flag == PR_KLC ? "PR_KLC" :
+#endif
+ "<unknown flag>",
+ mode == FLAG_RESET ? "off" : "on");
+
+ return win;
+}
+
+/*
+ * Function: proc_set_run_on_last_close
+ *
+ * Set the run_on_last_close flag.
+ * Process with all threads will become runnable
+ * when debugger closes all /proc fds.
+ *
+ * Returns non-zero for success, zero for failure.
+ */
+
+int
+proc_set_run_on_last_close (procinfo *pi)
+{
+ return proc_modify_flag (pi, PR_RLC, FLAG_SET);
+}
+
+/*
+ * Function: proc_unset_run_on_last_close
+ *
+ * Reset the run_on_last_close flag.
+ * Process will NOT become runnable
+ * when debugger closes its file handles.
+ *
+ * Returns non-zero for success, zero for failure.
+ */
+
+int
+proc_unset_run_on_last_close (procinfo *pi)
+{
+ return proc_modify_flag (pi, PR_RLC, FLAG_RESET);
+}
+
+#ifdef PR_KLC
+/*
+ * Function: proc_set_kill_on_last_close
+ *
+ * Set the kill_on_last_close flag.
+ * Process with all threads will be killed when debugger
+ * closes all /proc fds (or debugger exits or dies).
+ *
+ * Returns non-zero for success, zero for failure.
+ */
+
+int
+proc_set_kill_on_last_close (procinfo *pi)
+{
+ return proc_modify_flag (pi, PR_KLC, FLAG_SET);
+}
+
+/*
+ * Function: proc_unset_kill_on_last_close
+ *
+ * Reset the kill_on_last_close flag.
+ * Process will NOT be killed when debugger
+ * closes its file handles (or exits or dies).
+ *
+ * Returns non-zero for success, zero for failure.
+ */
+
+int
+proc_unset_kill_on_last_close (procinfo *pi)
+{
+ return proc_modify_flag (pi, PR_KLC, FLAG_RESET);
+}
+#endif /* PR_KLC */
+
+/*
+ * Function: proc_set_inherit_on_fork
+ *
+ * Set inherit_on_fork flag.
+ * If the process forks a child while we are registered for events
+ * in the parent, then we will also recieve events from the child.
+ *
+ * Returns non-zero for success, zero for failure.
+ */
+
+int
+proc_set_inherit_on_fork (procinfo *pi)
+{
+ return proc_modify_flag (pi, PR_FORK, FLAG_SET);
+}
+
+/*
+ * Function: proc_unset_inherit_on_fork
+ *
+ * Reset inherit_on_fork flag.
+ * If the process forks a child while we are registered for events
+ * in the parent, then we will NOT recieve events from the child.
+ *
+ * Returns non-zero for success, zero for failure.
+ */
+
+int
+proc_unset_inherit_on_fork (procinfo *pi)
+{
+ return proc_modify_flag (pi, PR_FORK, FLAG_RESET);
+}
+
+#ifdef PR_ASYNC
+/*
+ * Function: proc_set_async
+ *
+ * Set PR_ASYNC flag.
+ * If one LWP stops because of a debug event (signal etc.),
+ * the remaining LWPs will continue to run.
+ *
+ * Returns non-zero for success, zero for failure.
+ */
+
+int
+proc_set_async (procinfo *pi)
+{
+ return proc_modify_flag (pi, PR_ASYNC, FLAG_SET);
+}
+
+/*
+ * Function: proc_unset_async
+ *
+ * Reset PR_ASYNC flag.
+ * If one LWP stops because of a debug event (signal etc.),
+ * then all other LWPs will stop as well.
+ *
+ * Returns non-zero for success, zero for failure.
+ */
+
+int
+proc_unset_async (procinfo *pi)
+{
+ return proc_modify_flag (pi, PR_ASYNC, FLAG_RESET);
+}
+#endif /* PR_ASYNC */
+
+/*
+ * Function: proc_stop_process
+ *
+ * Request the process/LWP to stop. Does not wait.
+ * Returns non-zero for success, zero for failure.
+ */
+
+int
+proc_stop_process (procinfo *pi)
+{
+ int win;
+
+ /*
+ * We might conceivably apply this operation to an LWP, and
+ * the LWP's ctl file descriptor might not be open.
+ */
+
+ if (pi->ctl_fd == 0 &&
+ open_procinfo_files (pi, FD_CTL) == 0)
+ return 0;
+ else
+ {
+#ifdef NEW_PROC_API
+ procfs_ctl_t cmd = PCSTOP;
+ win = (write (pi->ctl_fd, (char *) &cmd, sizeof (cmd)) == sizeof (cmd));
+#else /* ioctl method */
+ win = (ioctl (pi->ctl_fd, PIOCSTOP, &pi->prstatus) >= 0);
+ /* Note: the call also reads the prstatus. */
+ if (win)
+ {
+ pi->status_valid = 1;
+ PROC_PRETTYFPRINT_STATUS (proc_flags (pi),
+ proc_why (pi),
+ proc_what (pi),
+ proc_get_current_thread (pi));
+ }
+#endif
+ }
+
+ return win;
+}
+
+/*
+ * Function: proc_wait_for_stop
+ *
+ * Wait for the process or LWP to stop (block until it does).
+ * Returns non-zero for success, zero for failure.
+ */
+
+int
+proc_wait_for_stop (procinfo *pi)
+{
+ int win;
+
+ /*
+ * We should never have to apply this operation to any procinfo
+ * except the one for the main process. If that ever changes
+ * for any reason, then take out the following clause and
+ * replace it with one that makes sure the ctl_fd is open.
+ */
+
+ if (pi->tid != 0)
+ pi = find_procinfo_or_die (pi->pid, 0);
+
+#ifdef NEW_PROC_API
+ {
+ procfs_ctl_t cmd = PCWSTOP;
+ win = (write (pi->ctl_fd, (char *) &cmd, sizeof (cmd)) == sizeof (cmd));
+ /* We been runnin' and we stopped -- need to update status. */
+ pi->status_valid = 0;
+ }
+#else /* ioctl method */
+ win = (ioctl (pi->ctl_fd, PIOCWSTOP, &pi->prstatus) >= 0);
+ /* Above call also refreshes the prstatus. */
+ if (win)
+ {
+ pi->status_valid = 1;
+ PROC_PRETTYFPRINT_STATUS (proc_flags (pi),
+ proc_why (pi),
+ proc_what (pi),
+ proc_get_current_thread (pi));
+ }
+#endif
+
+ return win;
+}
+
+/*
+ * Function: proc_run_process
+ *
+ * Make the process or LWP runnable.
+ * Options (not all are implemented):
+ * - single-step
+ * - clear current fault
+ * - clear current signal
+ * - abort the current system call
+ * - stop as soon as finished with system call
+ * - (ioctl): set traced signal set
+ * - (ioctl): set held signal set
+ * - (ioctl): set traced fault set
+ * - (ioctl): set start pc (vaddr)
+ * Always clear the current fault.
+ * Clear the current signal if 'signo' is zero.
+ *
+ * Arguments:
+ * pi the process or LWP to operate on.
+ * step if true, set the process or LWP to trap after one instr.
+ * signo if zero, clear the current signal if any.
+ * if non-zero, set the current signal to this one.
+ *
+ * Returns non-zero for success, zero for failure.
+ */
+
+int
+proc_run_process (procinfo *pi, int step, int signo)
+{
+ int win;
+ int runflags;
+
+ /*
+ * We will probably have to apply this operation to individual threads,
+ * so make sure the control file descriptor is open.
+ */
+
+ if (pi->ctl_fd == 0 &&
+ open_procinfo_files (pi, FD_CTL) == 0)
+ {
+ return 0;
+ }
+
+ runflags = PRCFAULT; /* always clear current fault */
+ if (step)
+ runflags |= PRSTEP;
+ if (signo == 0)
+ runflags |= PRCSIG;
+ else if (signo != -1) /* -1 means do nothing W.R.T. signals */
+ proc_set_current_signal (pi, signo);
+
+#ifdef NEW_PROC_API
+ {
+ procfs_ctl_t cmd[2];
+
+ cmd[0] = PCRUN;
+ cmd[1] = runflags;
+ win = (write (pi->ctl_fd, (char *) &cmd, sizeof (cmd)) == sizeof (cmd));
+ }
+#else /* ioctl method */
+ {
+ prrun_t prrun;
+
+ memset (&prrun, 0, sizeof (prrun));
+ prrun.pr_flags = runflags;
+ win = (ioctl (pi->ctl_fd, PIOCRUN, &prrun) >= 0);
+ }
+#endif
+
+ return win;
+}
+
+/*
+ * Function: proc_set_traced_signals
+ *
+ * Register to trace signals in the process or LWP.
+ * Returns non-zero for success, zero for failure.
+ */
+
+int
+proc_set_traced_signals (procinfo *pi, gdb_sigset_t *sigset)
+{
+ int win;
+
+ /*
+ * We should never have to apply this operation to any procinfo
+ * except the one for the main process. If that ever changes
+ * for any reason, then take out the following clause and
+ * replace it with one that makes sure the ctl_fd is open.
+ */
+
+ if (pi->tid != 0)
+ pi = find_procinfo_or_die (pi->pid, 0);
+
+#ifdef NEW_PROC_API
+ {
+ struct {
+ procfs_ctl_t cmd;
+ /* Use char array to avoid alignment issues. */
+ char sigset[sizeof (gdb_sigset_t)];
+ } arg;
+
+ arg.cmd = PCSTRACE;
+ memcpy (&arg.sigset, sigset, sizeof (gdb_sigset_t));
+
+ win = (write (pi->ctl_fd, (char *) &arg, sizeof (arg)) == sizeof (arg));
+ }
+#else /* ioctl method */
+ win = (ioctl (pi->ctl_fd, PIOCSTRACE, sigset) >= 0);
+#endif
+ /* The above operation renders the procinfo's cached pstatus obsolete. */
+ pi->status_valid = 0;
+
+ if (!win)
+ warning ("procfs: set_traced_signals failed");
+ return win;
+}
+
+/*
+ * Function: proc_set_traced_faults
+ *
+ * Register to trace hardware faults in the process or LWP.
+ * Returns non-zero for success, zero for failure.
+ */
+
+int
+proc_set_traced_faults (procinfo *pi, fltset_t *fltset)
+{
+ int win;
+
+ /*
+ * We should never have to apply this operation to any procinfo
+ * except the one for the main process. If that ever changes
+ * for any reason, then take out the following clause and
+ * replace it with one that makes sure the ctl_fd is open.
+ */
+
+ if (pi->tid != 0)
+ pi = find_procinfo_or_die (pi->pid, 0);
+
+#ifdef NEW_PROC_API
+ {
+ struct {
+ procfs_ctl_t cmd;
+ /* Use char array to avoid alignment issues. */
+ char fltset[sizeof (fltset_t)];
+ } arg;
+
+ arg.cmd = PCSFAULT;
+ memcpy (&arg.fltset, fltset, sizeof (fltset_t));
+
+ win = (write (pi->ctl_fd, (char *) &arg, sizeof (arg)) == sizeof (arg));
+ }
+#else /* ioctl method */
+ win = (ioctl (pi->ctl_fd, PIOCSFAULT, fltset) >= 0);
+#endif
+ /* The above operation renders the procinfo's cached pstatus obsolete. */
+ pi->status_valid = 0;
+
+ return win;
+}
+
+/*
+ * Function: proc_set_traced_sysentry
+ *
+ * Register to trace entry to system calls in the process or LWP.
+ * Returns non-zero for success, zero for failure.
+ */
+
+int
+proc_set_traced_sysentry (procinfo *pi, sysset_t *sysset)
+{
+ int win;
+
+ /*
+ * We should never have to apply this operation to any procinfo
+ * except the one for the main process. If that ever changes
+ * for any reason, then take out the following clause and
+ * replace it with one that makes sure the ctl_fd is open.
+ */
+
+ if (pi->tid != 0)
+ pi = find_procinfo_or_die (pi->pid, 0);
+
+#ifdef NEW_PROC_API
+ {
+ struct gdb_proc_ctl_pcsentry {
+ procfs_ctl_t cmd;
+ /* Use char array to avoid alignment issues. */
+ char sysset[sizeof (sysset_t)];
+ } *argp;
+ int argp_size = sizeof (struct gdb_proc_ctl_pcsentry)
+ - sizeof (sysset_t)
+ + sysset_t_size (pi);
+
+ argp = xmalloc (argp_size);
+
+ argp->cmd = PCSENTRY;
+ memcpy (&argp->sysset, sysset, sysset_t_size (pi));
+
+ win = (write (pi->ctl_fd, (char *) argp, argp_size) == argp_size);
+ xfree (argp);
+ }
+#else /* ioctl method */
+ win = (ioctl (pi->ctl_fd, PIOCSENTRY, sysset) >= 0);
+#endif
+ /* The above operation renders the procinfo's cached pstatus obsolete. */
+ pi->status_valid = 0;
+
+ return win;
+}
+
+/*
+ * Function: proc_set_traced_sysexit
+ *
+ * Register to trace exit from system calls in the process or LWP.
+ * Returns non-zero for success, zero for failure.
+ */
+
+int
+proc_set_traced_sysexit (procinfo *pi, sysset_t *sysset)
+{
+ int win;
+
+ /*
+ * We should never have to apply this operation to any procinfo
+ * except the one for the main process. If that ever changes
+ * for any reason, then take out the following clause and
+ * replace it with one that makes sure the ctl_fd is open.
+ */
+
+ if (pi->tid != 0)
+ pi = find_procinfo_or_die (pi->pid, 0);
+
+#ifdef NEW_PROC_API
+ {
+ struct gdb_proc_ctl_pcsexit {
+ procfs_ctl_t cmd;
+ /* Use char array to avoid alignment issues. */
+ char sysset[sizeof (sysset_t)];
+ } *argp;
+ int argp_size = sizeof (struct gdb_proc_ctl_pcsexit)
+ - sizeof (sysset_t)
+ + sysset_t_size (pi);
+
+ argp = xmalloc (argp_size);
+
+ argp->cmd = PCSEXIT;
+ memcpy (&argp->sysset, sysset, sysset_t_size (pi));
+
+ win = (write (pi->ctl_fd, (char *) argp, argp_size) == argp_size);
+ xfree (argp);
+ }
+#else /* ioctl method */
+ win = (ioctl (pi->ctl_fd, PIOCSEXIT, sysset) >= 0);
+#endif
+ /* The above operation renders the procinfo's cached pstatus obsolete. */
+ pi->status_valid = 0;
+
+ return win;
+}
+
+/*
+ * Function: proc_set_held_signals
+ *
+ * Specify the set of blocked / held signals in the process or LWP.
+ * Returns non-zero for success, zero for failure.
+ */
+
+int
+proc_set_held_signals (procinfo *pi, gdb_sigset_t *sighold)
+{
+ int win;
+
+ /*
+ * We should never have to apply this operation to any procinfo
+ * except the one for the main process. If that ever changes
+ * for any reason, then take out the following clause and
+ * replace it with one that makes sure the ctl_fd is open.
+ */
+
+ if (pi->tid != 0)
+ pi = find_procinfo_or_die (pi->pid, 0);
+
+#ifdef NEW_PROC_API
+ {
+ struct {
+ procfs_ctl_t cmd;
+ /* Use char array to avoid alignment issues. */
+ char hold[sizeof (gdb_sigset_t)];
+ } arg;
+
+ arg.cmd = PCSHOLD;
+ memcpy (&arg.hold, sighold, sizeof (gdb_sigset_t));
+ win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg));
+ }
+#else
+ win = (ioctl (pi->ctl_fd, PIOCSHOLD, sighold) >= 0);
+#endif
+ /* The above operation renders the procinfo's cached pstatus obsolete. */
+ pi->status_valid = 0;
+
+ return win;
+}
+
+/*
+ * Function: proc_get_pending_signals
+ *
+ * returns the set of signals that are pending in the process or LWP.
+ * Will also copy the sigset if 'save' is non-zero.
+ */
+
+gdb_sigset_t *
+proc_get_pending_signals (procinfo *pi, gdb_sigset_t *save)
+{
+ gdb_sigset_t *ret = NULL;
+
+ /*
+ * We should never have to apply this operation to any procinfo
+ * except the one for the main process. If that ever changes
+ * for any reason, then take out the following clause and
+ * replace it with one that makes sure the ctl_fd is open.
+ */
+
+ if (pi->tid != 0)
+ pi = find_procinfo_or_die (pi->pid, 0);
+
+ if (!pi->status_valid)
+ if (!proc_get_status (pi))
+ return NULL;
+
+#ifdef NEW_PROC_API
+ ret = &pi->prstatus.pr_lwp.pr_lwppend;
+#else
+ ret = &pi->prstatus.pr_sigpend;
+#endif
+ if (save && ret)
+ memcpy (save, ret, sizeof (gdb_sigset_t));
+
+ return ret;
+}
+
+/*
+ * Function: proc_get_signal_actions
+ *
+ * returns the set of signal actions.
+ * Will also copy the sigactionset if 'save' is non-zero.
+ */
+
+gdb_sigaction_t *
+proc_get_signal_actions (procinfo *pi, gdb_sigaction_t *save)
+{
+ gdb_sigaction_t *ret = NULL;
+
+ /*
+ * We should never have to apply this operation to any procinfo
+ * except the one for the main process. If that ever changes
+ * for any reason, then take out the following clause and
+ * replace it with one that makes sure the ctl_fd is open.
+ */
+
+ if (pi->tid != 0)
+ pi = find_procinfo_or_die (pi->pid, 0);
+
+ if (!pi->status_valid)
+ if (!proc_get_status (pi))
+ return NULL;
+
+#ifdef NEW_PROC_API
+ ret = &pi->prstatus.pr_lwp.pr_action;
+#else
+ ret = &pi->prstatus.pr_action;
+#endif
+ if (save && ret)
+ memcpy (save, ret, sizeof (gdb_sigaction_t));
+
+ return ret;
+}
+
+/*
+ * Function: proc_get_held_signals
+ *
+ * returns the set of signals that are held / blocked.
+ * Will also copy the sigset if 'save' is non-zero.
+ */
+
+gdb_sigset_t *
+proc_get_held_signals (procinfo *pi, gdb_sigset_t *save)
+{
+ gdb_sigset_t *ret = NULL;
+
+ /*
+ * We should never have to apply this operation to any procinfo
+ * except the one for the main process. If that ever changes
+ * for any reason, then take out the following clause and
+ * replace it with one that makes sure the ctl_fd is open.
+ */
+
+ if (pi->tid != 0)
+ pi = find_procinfo_or_die (pi->pid, 0);
+
+#ifdef NEW_PROC_API
+ if (!pi->status_valid)
+ if (!proc_get_status (pi))
+ return NULL;
+
+#ifdef UNIXWARE
+ ret = &pi->prstatus.pr_lwp.pr_context.uc_sigmask;
+#else
+ ret = &pi->prstatus.pr_lwp.pr_lwphold;
+#endif /* UNIXWARE */
+#else /* not NEW_PROC_API */
+ {
+ static gdb_sigset_t sigheld;
+
+ if (ioctl (pi->ctl_fd, PIOCGHOLD, &sigheld) >= 0)
+ ret = &sigheld;
+ }
+#endif /* NEW_PROC_API */
+ if (save && ret)
+ memcpy (save, ret, sizeof (gdb_sigset_t));
+
+ return ret;
+}
+
+/*
+ * Function: proc_get_traced_signals
+ *
+ * returns the set of signals that are traced / debugged.
+ * Will also copy the sigset if 'save' is non-zero.
+ */
+
+gdb_sigset_t *
+proc_get_traced_signals (procinfo *pi, gdb_sigset_t *save)
+{
+ gdb_sigset_t *ret = NULL;
+
+ /*
+ * We should never have to apply this operation to any procinfo
+ * except the one for the main process. If that ever changes
+ * for any reason, then take out the following clause and
+ * replace it with one that makes sure the ctl_fd is open.
+ */
+
+ if (pi->tid != 0)
+ pi = find_procinfo_or_die (pi->pid, 0);
+
+#ifdef NEW_PROC_API
+ if (!pi->status_valid)
+ if (!proc_get_status (pi))
+ return NULL;
+
+ ret = &pi->prstatus.pr_sigtrace;
+#else
+ {
+ static gdb_sigset_t sigtrace;
+
+ if (ioctl (pi->ctl_fd, PIOCGTRACE, &sigtrace) >= 0)
+ ret = &sigtrace;
+ }
+#endif
+ if (save && ret)
+ memcpy (save, ret, sizeof (gdb_sigset_t));
+
+ return ret;
+}
+
+/*
+ * Function: proc_trace_signal
+ *
+ * Add 'signo' to the set of signals that are traced.
+ * Returns non-zero for success, zero for failure.
+ */
+
+int
+proc_trace_signal (procinfo *pi, int signo)
+{
+ gdb_sigset_t temp;
+
+ /*
+ * We should never have to apply this operation to any procinfo
+ * except the one for the main process. If that ever changes
+ * for any reason, then take out the following clause and
+ * replace it with one that makes sure the ctl_fd is open.
+ */
+
+ if (pi->tid != 0)
+ pi = find_procinfo_or_die (pi->pid, 0);
+
+ if (pi)
+ {
+ if (proc_get_traced_signals (pi, &temp))
+ {
+ praddset (&temp, signo);
+ return proc_set_traced_signals (pi, &temp);
+ }
+ }
+
+ return 0; /* failure */
+}
+
+/*
+ * Function: proc_ignore_signal
+ *
+ * Remove 'signo' from the set of signals that are traced.
+ * Returns non-zero for success, zero for failure.
+ */
+
+int
+proc_ignore_signal (procinfo *pi, int signo)
+{
+ gdb_sigset_t temp;
+
+ /*
+ * We should never have to apply this operation to any procinfo
+ * except the one for the main process. If that ever changes
+ * for any reason, then take out the following clause and
+ * replace it with one that makes sure the ctl_fd is open.
+ */
+
+ if (pi->tid != 0)
+ pi = find_procinfo_or_die (pi->pid, 0);
+
+ if (pi)
+ {
+ if (proc_get_traced_signals (pi, &temp))
+ {
+ prdelset (&temp, signo);
+ return proc_set_traced_signals (pi, &temp);
+ }
+ }
+
+ return 0; /* failure */
+}
+
+/*
+ * Function: proc_get_traced_faults
+ *
+ * returns the set of hardware faults that are traced /debugged.
+ * Will also copy the faultset if 'save' is non-zero.
+ */
+
+fltset_t *
+proc_get_traced_faults (procinfo *pi, fltset_t *save)
+{
+ fltset_t *ret = NULL;
+
+ /*
+ * We should never have to apply this operation to any procinfo
+ * except the one for the main process. If that ever changes
+ * for any reason, then take out the following clause and
+ * replace it with one that makes sure the ctl_fd is open.
+ */
+
+ if (pi->tid != 0)
+ pi = find_procinfo_or_die (pi->pid, 0);
+
+#ifdef NEW_PROC_API
+ if (!pi->status_valid)
+ if (!proc_get_status (pi))
+ return NULL;
+
+ ret = &pi->prstatus.pr_flttrace;
+#else
+ {
+ static fltset_t flttrace;
+
+ if (ioctl (pi->ctl_fd, PIOCGFAULT, &flttrace) >= 0)
+ ret = &flttrace;
+ }
+#endif
+ if (save && ret)
+ memcpy (save, ret, sizeof (fltset_t));
+
+ return ret;
+}
+
+/*
+ * Function: proc_get_traced_sysentry
+ *
+ * returns the set of syscalls that are traced /debugged on entry.
+ * Will also copy the syscall set if 'save' is non-zero.
+ */
+
+sysset_t *
+proc_get_traced_sysentry (procinfo *pi, sysset_t *save)
+{
+ sysset_t *ret = NULL;
+
+ /*
+ * We should never have to apply this operation to any procinfo
+ * except the one for the main process. If that ever changes
+ * for any reason, then take out the following clause and
+ * replace it with one that makes sure the ctl_fd is open.
+ */
+
+ if (pi->tid != 0)
+ pi = find_procinfo_or_die (pi->pid, 0);
+
+#ifdef NEW_PROC_API
+ if (!pi->status_valid)
+ if (!proc_get_status (pi))
+ return NULL;
+
+#ifndef DYNAMIC_SYSCALLS
+ ret = &pi->prstatus.pr_sysentry;
+#else /* DYNAMIC_SYSCALLS */
+ {
+ static sysset_t *sysentry;
+ size_t size;
+
+ if (!sysentry)
+ sysentry = sysset_t_alloc (pi);
+ ret = sysentry;
+ if (pi->status_fd == 0 && open_procinfo_files (pi, FD_STATUS) == 0)
+ return NULL;
+ if (pi->prstatus.pr_sysentry_offset == 0)
+ {
+ gdb_premptysysset (sysentry);
+ }
+ else
+ {
+ int rsize;
+
+ if (lseek (pi->status_fd, (off_t) pi->prstatus.pr_sysentry_offset,
+ SEEK_SET)
+ != (off_t) pi->prstatus.pr_sysentry_offset)
+ return NULL;
+ size = sysset_t_size (pi);
+ gdb_premptysysset (sysentry);
+ rsize = read (pi->status_fd, sysentry, size);
+ if (rsize < 0)
+ return NULL;
+ }
+ }
+#endif /* DYNAMIC_SYSCALLS */
+#else /* !NEW_PROC_API */
+ {
+ static sysset_t sysentry;
+
+ if (ioctl (pi->ctl_fd, PIOCGENTRY, &sysentry) >= 0)
+ ret = &sysentry;
+ }
+#endif /* NEW_PROC_API */
+ if (save && ret)
+ memcpy (save, ret, sysset_t_size (pi));
+
+ return ret;
+}
+
+/*
+ * Function: proc_get_traced_sysexit
+ *
+ * returns the set of syscalls that are traced /debugged on exit.
+ * Will also copy the syscall set if 'save' is non-zero.
+ */
+
+sysset_t *
+proc_get_traced_sysexit (procinfo *pi, sysset_t *save)
+{
+ sysset_t * ret = NULL;
+
+ /*
+ * We should never have to apply this operation to any procinfo
+ * except the one for the main process. If that ever changes
+ * for any reason, then take out the following clause and
+ * replace it with one that makes sure the ctl_fd is open.
+ */
+
+ if (pi->tid != 0)
+ pi = find_procinfo_or_die (pi->pid, 0);
+
+#ifdef NEW_PROC_API
+ if (!pi->status_valid)
+ if (!proc_get_status (pi))
+ return NULL;
+
+#ifndef DYNAMIC_SYSCALLS
+ ret = &pi->prstatus.pr_sysexit;
+#else /* DYNAMIC_SYSCALLS */
+ {
+ static sysset_t *sysexit;
+ size_t size;
+
+ if (!sysexit)
+ sysexit = sysset_t_alloc (pi);
+ ret = sysexit;
+ if (pi->status_fd == 0 && open_procinfo_files (pi, FD_STATUS) == 0)
+ return NULL;
+ if (pi->prstatus.pr_sysexit_offset == 0)
+ {
+ gdb_premptysysset (sysexit);
+ }
+ else
+ {
+ int rsize;
+
+ if (lseek (pi->status_fd, (off_t) pi->prstatus.pr_sysexit_offset, SEEK_SET)
+ != (off_t) pi->prstatus.pr_sysexit_offset)
+ return NULL;
+ size = sysset_t_size (pi);
+ gdb_premptysysset (sysexit);
+ rsize = read (pi->status_fd, sysexit, size);
+ if (rsize < 0)
+ return NULL;
+ }
+ }
+#endif /* DYNAMIC_SYSCALLS */
+#else
+ {
+ static sysset_t sysexit;
+
+ if (ioctl (pi->ctl_fd, PIOCGEXIT, &sysexit) >= 0)
+ ret = &sysexit;
+ }
+#endif
+ if (save && ret)
+ memcpy (save, ret, sysset_t_size (pi));
+
+ return ret;
+}
+
+/*
+ * Function: proc_clear_current_fault
+ *
+ * The current fault (if any) is cleared; the associated signal
+ * will not be sent to the process or LWP when it resumes.
+ * Returns non-zero for success, zero for failure.
+ */
+
+int
+proc_clear_current_fault (procinfo *pi)
+{
+ int win;
+
+ /*
+ * We should never have to apply this operation to any procinfo
+ * except the one for the main process. If that ever changes
+ * for any reason, then take out the following clause and
+ * replace it with one that makes sure the ctl_fd is open.
+ */
+
+ if (pi->tid != 0)
+ pi = find_procinfo_or_die (pi->pid, 0);
+
+#ifdef NEW_PROC_API
+ {
+ procfs_ctl_t cmd = PCCFAULT;
+ win = (write (pi->ctl_fd, (void *) &cmd, sizeof (cmd)) == sizeof (cmd));
+ }
+#else
+ win = (ioctl (pi->ctl_fd, PIOCCFAULT, 0) >= 0);
+#endif
+
+ return win;
+}
+
+/*
+ * Function: proc_set_current_signal
+ *
+ * Set the "current signal" that will be delivered next to the process.
+ * NOTE: semantics are different from those of KILL.
+ * This signal will be delivered to the process or LWP
+ * immediately when it is resumed (even if the signal is held/blocked);
+ * it will NOT immediately cause another event of interest, and will NOT
+ * first trap back to the debugger.
+ *
+ * Returns non-zero for success, zero for failure.
+ */
+
+int
+proc_set_current_signal (procinfo *pi, int signo)
+{
+ int win;
+ struct {
+ procfs_ctl_t cmd;
+ /* Use char array to avoid alignment issues. */
+ char sinfo[sizeof (gdb_siginfo_t)];
+ } arg;
+ gdb_siginfo_t *mysinfo;
+
+ /*
+ * We should never have to apply this operation to any procinfo
+ * except the one for the main process. If that ever changes
+ * for any reason, then take out the following clause and
+ * replace it with one that makes sure the ctl_fd is open.
+ */
+
+ if (pi->tid != 0)
+ pi = find_procinfo_or_die (pi->pid, 0);
+
+#ifdef PROCFS_DONT_PIOCSSIG_CURSIG
+ /* With Alpha OSF/1 procfs, the kernel gets really confused if it
+ * receives a PIOCSSIG with a signal identical to the current signal,
+ * it messes up the current signal. Work around the kernel bug.
+ */
+ if (signo > 0 &&
+ signo == proc_cursig (pi))
+ return 1; /* I assume this is a success? */
+#endif
+
+ /* The pointer is just a type alias. */
+ mysinfo = (gdb_siginfo_t *) &arg.sinfo;
+ mysinfo->si_signo = signo;
+ mysinfo->si_code = 0;
+ mysinfo->si_pid = getpid (); /* ?why? */
+ mysinfo->si_uid = getuid (); /* ?why? */
+
+#ifdef NEW_PROC_API
+ arg.cmd = PCSSIG;
+ win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg));
+#else
+ win = (ioctl (pi->ctl_fd, PIOCSSIG, (void *) &arg.sinfo) >= 0);
+#endif
+
+ return win;
+}
+
+/*
+ * Function: proc_clear_current_signal
+ *
+ * The current signal (if any) is cleared, and
+ * is not sent to the process or LWP when it resumes.
+ * Returns non-zero for success, zero for failure.
+ */
+
+int
+proc_clear_current_signal (procinfo *pi)
+{
+ int win;
+
+ /*
+ * We should never have to apply this operation to any procinfo
+ * except the one for the main process. If that ever changes
+ * for any reason, then take out the following clause and
+ * replace it with one that makes sure the ctl_fd is open.
+ */
+
+ if (pi->tid != 0)
+ pi = find_procinfo_or_die (pi->pid, 0);
+
+#ifdef NEW_PROC_API
+ {
+ struct {
+ procfs_ctl_t cmd;
+ /* Use char array to avoid alignment issues. */
+ char sinfo[sizeof (gdb_siginfo_t)];
+ } arg;
+ gdb_siginfo_t *mysinfo;
+
+ arg.cmd = PCSSIG;
+ /* The pointer is just a type alias. */
+ mysinfo = (gdb_siginfo_t *) &arg.sinfo;
+ mysinfo->si_signo = 0;
+ mysinfo->si_code = 0;
+ mysinfo->si_errno = 0;
+ mysinfo->si_pid = getpid (); /* ?why? */
+ mysinfo->si_uid = getuid (); /* ?why? */
+
+ win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg));
+ }
+#else
+ win = (ioctl (pi->ctl_fd, PIOCSSIG, 0) >= 0);
+#endif
+
+ return win;
+}
+
+/*
+ * Function: proc_get_gregs
+ *
+ * Get the general registers for the process or LWP.
+ * Returns non-zero for success, zero for failure.
+ */
+
+gdb_gregset_t *
+proc_get_gregs (procinfo *pi)
+{
+ if (!pi->status_valid || !pi->gregs_valid)
+ if (!proc_get_status (pi))
+ return NULL;
+
+ /*
+ * OK, sorry about the ifdef's.
+ * There's three cases instead of two, because
+ * in this instance Unixware and Solaris/RW differ.
+ */
+
+#ifdef NEW_PROC_API
+#ifdef UNIXWARE /* ugh, a true architecture dependency */
+ return &pi->prstatus.pr_lwp.pr_context.uc_mcontext.gregs;
+#else /* not Unixware */
+ return &pi->prstatus.pr_lwp.pr_reg;
+#endif /* Unixware */
+#else /* not NEW_PROC_API */
+ return &pi->prstatus.pr_reg;
+#endif /* NEW_PROC_API */
+}
+
+/*
+ * Function: proc_get_fpregs
+ *
+ * Get the floating point registers for the process or LWP.
+ * Returns non-zero for success, zero for failure.
+ */
+
+gdb_fpregset_t *
+proc_get_fpregs (procinfo *pi)
+{
+#ifdef NEW_PROC_API
+ if (!pi->status_valid || !pi->fpregs_valid)
+ if (!proc_get_status (pi))
+ return NULL;
+
+#ifdef UNIXWARE /* a true architecture dependency */
+ return &pi->prstatus.pr_lwp.pr_context.uc_mcontext.fpregs;
+#else
+ return &pi->prstatus.pr_lwp.pr_fpreg;
+#endif /* Unixware */
+
+#else /* not NEW_PROC_API */
+ if (pi->fpregs_valid)
+ return &pi->fpregset; /* already got 'em */
+ else
+ {
+ if (pi->ctl_fd == 0 &&
+ open_procinfo_files (pi, FD_CTL) == 0)
+ {
+ return NULL;
+ }
+ else
+ {
+#ifdef PIOCTGFPREG
+ struct {
+ long pr_count;
+ tid_t pr_error_thread;
+ tfpregset_t thread_1;
+ } thread_fpregs;
+
+ thread_fpregs.pr_count = 1;
+ thread_fpregs.thread_1.tid = pi->tid;
+
+ if (pi->tid == 0 &&
+ ioctl (pi->ctl_fd, PIOCGFPREG, &pi->fpregset) >= 0)
+ {
+ pi->fpregs_valid = 1;
+ return &pi->fpregset; /* got 'em now! */
+ }
+ else if (pi->tid != 0 &&
+ ioctl (pi->ctl_fd, PIOCTGFPREG, &thread_fpregs) >= 0)
+ {
+ memcpy (&pi->fpregset, &thread_fpregs.thread_1.pr_fpregs,
+ sizeof (pi->fpregset));
+ pi->fpregs_valid = 1;
+ return &pi->fpregset; /* got 'em now! */
+ }
+ else
+ {
+ return NULL;
+ }
+#else
+ if (ioctl (pi->ctl_fd, PIOCGFPREG, &pi->fpregset) >= 0)
+ {
+ pi->fpregs_valid = 1;
+ return &pi->fpregset; /* got 'em now! */
+ }
+ else
+ {
+ return NULL;
+ }
+#endif
+ }
+ }
+#endif
+}
+
+/*
+ * Function: proc_set_gregs
+ *
+ * Write the general registers back to the process or LWP.
+ * Returns non-zero for success, zero for failure.
+ */
+
+int
+proc_set_gregs (procinfo *pi)
+{
+ gdb_gregset_t *gregs;
+ int win;
+
+ if ((gregs = proc_get_gregs (pi)) == NULL)
+ return 0; /* get_regs has already warned */
+
+ if (pi->ctl_fd == 0 &&
+ open_procinfo_files (pi, FD_CTL) == 0)
+ {
+ return 0;
+ }
+ else
+ {
+#ifdef NEW_PROC_API
+ struct {
+ procfs_ctl_t cmd;
+ /* Use char array to avoid alignment issues. */
+ char gregs[sizeof (gdb_gregset_t)];
+ } arg;
+
+ arg.cmd = PCSREG;
+ memcpy (&arg.gregs, gregs, sizeof (arg.gregs));
+ win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg));
+#else
+ win = (ioctl (pi->ctl_fd, PIOCSREG, gregs) >= 0);
+#endif
+ }
+
+ /* Policy: writing the regs invalidates our cache. */
+ pi->gregs_valid = 0;
+ return win;
+}
+
+/*
+ * Function: proc_set_fpregs
+ *
+ * Modify the floating point register set of the process or LWP.
+ * Returns non-zero for success, zero for failure.
+ */
+
+int
+proc_set_fpregs (procinfo *pi)
+{
+ gdb_fpregset_t *fpregs;
+ int win;
+
+ if ((fpregs = proc_get_fpregs (pi)) == NULL)
+ return 0; /* get_fpregs has already warned */
+
+ if (pi->ctl_fd == 0 &&
+ open_procinfo_files (pi, FD_CTL) == 0)
+ {
+ return 0;
+ }
+ else
+ {
+#ifdef NEW_PROC_API
+ struct {
+ procfs_ctl_t cmd;
+ /* Use char array to avoid alignment issues. */
+ char fpregs[sizeof (gdb_fpregset_t)];
+ } arg;
+
+ arg.cmd = PCSFPREG;
+ memcpy (&arg.fpregs, fpregs, sizeof (arg.fpregs));
+ win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg));
+#else
+#ifdef PIOCTSFPREG
+ if (pi->tid == 0)
+ win = (ioctl (pi->ctl_fd, PIOCSFPREG, fpregs) >= 0);
+ else
+ {
+ struct {
+ long pr_count;
+ tid_t pr_error_thread;
+ tfpregset_t thread_1;
+ } thread_fpregs;
+
+ thread_fpregs.pr_count = 1;
+ thread_fpregs.thread_1.tid = pi->tid;
+ memcpy (&thread_fpregs.thread_1.pr_fpregs, fpregs,
+ sizeof (*fpregs));
+ win = (ioctl (pi->ctl_fd, PIOCTSFPREG, &thread_fpregs) >= 0);
+ }
+#else
+ win = (ioctl (pi->ctl_fd, PIOCSFPREG, fpregs) >= 0);
+#endif /* osf PIOCTSFPREG */
+#endif /* NEW_PROC_API */
+ }
+
+ /* Policy: writing the regs invalidates our cache. */
+ pi->fpregs_valid = 0;
+ return win;
+}
+
+/*
+ * Function: proc_kill
+ *
+ * Send a signal to the proc or lwp with the semantics of "kill()".
+ * Returns non-zero for success, zero for failure.
+ */
+
+int
+proc_kill (procinfo *pi, int signo)
+{
+ int win;
+
+ /*
+ * We might conceivably apply this operation to an LWP, and
+ * the LWP's ctl file descriptor might not be open.
+ */
+
+ if (pi->ctl_fd == 0 &&
+ open_procinfo_files (pi, FD_CTL) == 0)
+ {
+ return 0;
+ }
+ else
+ {
+#ifdef NEW_PROC_API
+ procfs_ctl_t cmd[2];
+
+ cmd[0] = PCKILL;
+ cmd[1] = signo;
+ win = (write (pi->ctl_fd, (char *) &cmd, sizeof (cmd)) == sizeof (cmd));
+#else /* ioctl method */
+ /* FIXME: do I need the Alpha OSF fixups present in
+ procfs.c/unconditionally_kill_inferior? Perhaps only for SIGKILL? */
+ win = (ioctl (pi->ctl_fd, PIOCKILL, &signo) >= 0);
+#endif
+ }
+
+ return win;
+}
+
+/*
+ * Function: proc_parent_pid
+ *
+ * Find the pid of the process that started this one.
+ * Returns the parent process pid, or zero.
+ */
+
+int
+proc_parent_pid (procinfo *pi)
+{
+ /*
+ * We should never have to apply this operation to any procinfo
+ * except the one for the main process. If that ever changes
+ * for any reason, then take out the following clause and
+ * replace it with one that makes sure the ctl_fd is open.
+ */
+
+ if (pi->tid != 0)
+ pi = find_procinfo_or_die (pi->pid, 0);
+
+ if (!pi->status_valid)
+ if (!proc_get_status (pi))
+ return 0;
+
+ return pi->prstatus.pr_ppid;
+}
+
+
+/*
+ * Function: proc_set_watchpoint
+ *
+ */
+
+int
+proc_set_watchpoint (procinfo *pi, CORE_ADDR addr, int len, int wflags)
+{
+#if !defined (TARGET_HAS_HARDWARE_WATCHPOINTS)
+ return 0;
+#else
+/* Horrible hack! Detect Solaris 2.5, because this doesn't work on 2.5 */
+#if defined (PIOCOPENLWP) || defined (UNIXWARE) /* Solaris 2.5: bail out */
+ return 0;
+#else
+ struct {
+ procfs_ctl_t cmd;
+ char watch[sizeof (prwatch_t)];
+ } arg;
+ prwatch_t *pwatch;
+
+ pwatch = (prwatch_t *) &arg.watch;
+#ifdef PCAGENT /* Horrible hack: only defined on Solaris 2.6+ */
+ pwatch->pr_vaddr = (uintptr_t) address_to_host_pointer (addr);
+#else
+ pwatch->pr_vaddr = (caddr_t) address_to_host_pointer (addr);
+#endif
+ pwatch->pr_size = len;
+ pwatch->pr_wflags = wflags;
+#if defined(NEW_PROC_API) && defined (PCWATCH)
+ arg.cmd = PCWATCH;
+ return (write (pi->ctl_fd, &arg, sizeof (arg)) == sizeof (arg));
+#else
+#if defined (PIOCSWATCH)
+ return (ioctl (pi->ctl_fd, PIOCSWATCH, pwatch) >= 0);
+#else
+ return 0; /* Fail */
+#endif
+#endif
+#endif
+#endif
+}
+
+#ifdef TM_I386SOL2_H /* Is it hokey to use this? */
+
+#include <sys/sysi86.h>
+
+/*
+ * Function: proc_get_LDT_entry
+ *
+ * Inputs:
+ * procinfo *pi;
+ * int key;
+ *
+ * The 'key' is actually the value of the lower 16 bits of
+ * the GS register for the LWP that we're interested in.
+ *
+ * Return: matching ssh struct (LDT entry).
+ */
+
+struct ssd *
+proc_get_LDT_entry (procinfo *pi, int key)
+{
+ static struct ssd *ldt_entry = NULL;
+#ifdef NEW_PROC_API
+ char pathname[MAX_PROC_NAME_SIZE];
+ struct cleanup *old_chain = NULL;
+ int fd;
+
+ /* Allocate space for one LDT entry.
+ This alloc must persist, because we return a pointer to it. */
+ if (ldt_entry == NULL)
+ ldt_entry = (struct ssd *) xmalloc (sizeof (struct ssd));
+
+ /* Open the file descriptor for the LDT table. */
+ sprintf (pathname, "/proc/%d/ldt", pi->pid);
+ if ((fd = open_with_retry (pathname, O_RDONLY)) < 0)
+ {
+ proc_warn (pi, "proc_get_LDT_entry (open)", __LINE__);
+ return NULL;
+ }
+ /* Make sure it gets closed again! */
+ old_chain = make_cleanup_close (fd);
+
+ /* Now 'read' thru the table, find a match and return it. */
+ while (read (fd, ldt_entry, sizeof (struct ssd)) == sizeof (struct ssd))
+ {
+ if (ldt_entry->sel == 0 &&
+ ldt_entry->bo == 0 &&
+ ldt_entry->acc1 == 0 &&
+ ldt_entry->acc2 == 0)
+ break; /* end of table */
+ /* If key matches, return this entry. */
+ if (ldt_entry->sel == key)
+ return ldt_entry;
+ }
+ /* Loop ended, match not found. */
+ return NULL;
+#else
+ int nldt, i;
+ static int nalloc = 0;
+
+ /* Get the number of LDT entries. */
+ if (ioctl (pi->ctl_fd, PIOCNLDT, &nldt) < 0)
+ {
+ proc_warn (pi, "proc_get_LDT_entry (PIOCNLDT)", __LINE__);
+ return NULL;
+ }
+
+ /* Allocate space for the number of LDT entries. */
+ /* This alloc has to persist, 'cause we return a pointer to it. */
+ if (nldt > nalloc)
+ {
+ ldt_entry = (struct ssd *)
+ xrealloc (ldt_entry, (nldt + 1) * sizeof (struct ssd));
+ nalloc = nldt;
+ }
+
+ /* Read the whole table in one gulp. */
+ if (ioctl (pi->ctl_fd, PIOCLDT, ldt_entry) < 0)
+ {
+ proc_warn (pi, "proc_get_LDT_entry (PIOCLDT)", __LINE__);
+ return NULL;
+ }
+
+ /* Search the table and return the (first) entry matching 'key'. */
+ for (i = 0; i < nldt; i++)
+ if (ldt_entry[i].sel == key)
+ return &ldt_entry[i];
+
+ /* Loop ended, match not found. */
+ return NULL;
+#endif
+}
+
+#endif /* TM_I386SOL2_H */
+
+/* =============== END, non-thread part of /proc "MODULE" =============== */
+
+/* =================== Thread "MODULE" =================== */
+
+/* NOTE: you'll see more ifdefs and duplication of functions here,
+ since there is a different way to do threads on every OS. */
+
+/*
+ * Function: proc_get_nthreads
+ *
+ * Return the number of threads for the process
+ */
+
+#if defined (PIOCNTHR) && defined (PIOCTLIST)
+/*
+ * OSF version
+ */
+int
+proc_get_nthreads (procinfo *pi)
+{
+ int nthreads = 0;
+
+ if (ioctl (pi->ctl_fd, PIOCNTHR, &nthreads) < 0)
+ proc_warn (pi, "procfs: PIOCNTHR failed", __LINE__);
+
+ return nthreads;
+}
+
+#else
+#if defined (SYS_lwpcreate) || defined (SYS_lwp_create) /* FIXME: multiple */
+/*
+ * Solaris and Unixware version
+ */
+int
+proc_get_nthreads (procinfo *pi)
+{
+ if (!pi->status_valid)
+ if (!proc_get_status (pi))
+ return 0;
+
+ /*
+ * NEW_PROC_API: only works for the process procinfo,
+ * because the LWP procinfos do not get prstatus filled in.
+ */
+#ifdef NEW_PROC_API
+ if (pi->tid != 0) /* find the parent process procinfo */
+ pi = find_procinfo_or_die (pi->pid, 0);
+#endif
+ return pi->prstatus.pr_nlwp;
+}
+
+#else
+/*
+ * Default version
+ */
+int
+proc_get_nthreads (procinfo *pi)
+{
+ return 0;
+}
+#endif
+#endif
+
+/*
+ * Function: proc_get_current_thread (LWP version)
+ *
+ * Return the ID of the thread that had an event of interest.
+ * (ie. the one that hit a breakpoint or other traced event).
+ * All other things being equal, this should be the ID of a
+ * thread that is currently executing.
+ */
+
+#if defined (SYS_lwpcreate) || defined (SYS_lwp_create) /* FIXME: multiple */
+/*
+ * Solaris and Unixware version
+ */
+int
+proc_get_current_thread (procinfo *pi)
+{
+ /*
+ * Note: this should be applied to the root procinfo for the process,
+ * not to the procinfo for an LWP. If applied to the procinfo for
+ * an LWP, it will simply return that LWP's ID. In that case,
+ * find the parent process procinfo.
+ */
+
+ if (pi->tid != 0)
+ pi = find_procinfo_or_die (pi->pid, 0);
+
+ if (!pi->status_valid)
+ if (!proc_get_status (pi))
+ return 0;
+
+#ifdef NEW_PROC_API
+ return pi->prstatus.pr_lwp.pr_lwpid;
+#else
+ return pi->prstatus.pr_who;
+#endif
+}
+
+#else
+#if defined (PIOCNTHR) && defined (PIOCTLIST)
+/*
+ * OSF version
+ */
+int
+proc_get_current_thread (procinfo *pi)
+{
+#if 0 /* FIXME: not ready for prime time? */
+ return pi->prstatus.pr_tid;
+#else
+ return 0;
+#endif
+}
+
+#else
+/*
+ * Default version
+ */
+int
+proc_get_current_thread (procinfo *pi)
+{
+ return 0;
+}
+
+#endif
+#endif
+
+/*
+ * Function: proc_update_threads
+ *
+ * Discover the IDs of all the threads within the process, and
+ * create a procinfo for each of them (chained to the parent).
+ *
+ * This unfortunately requires a different method on every OS.
+ *
+ * Return: non-zero for success, zero for failure.
+ */
+
+int
+proc_delete_dead_threads (procinfo *parent, procinfo *thread, void *ignore)
+{
+ if (thread && parent) /* sanity */
+ {
+ thread->status_valid = 0;
+ if (!proc_get_status (thread))
+ destroy_one_procinfo (&parent->thread_list, thread);
+ }
+ return 0; /* keep iterating */
+}
+
+#if defined (PIOCLSTATUS)
+/*
+ * Solaris 2.5 (ioctl) version
+ */
+int
+proc_update_threads (procinfo *pi)
+{
+ gdb_prstatus_t *prstatus;
+ struct cleanup *old_chain = NULL;
+ procinfo *thread;
+ int nlwp, i;
+
+ /*
+ * We should never have to apply this operation to any procinfo
+ * except the one for the main process. If that ever changes
+ * for any reason, then take out the following clause and
+ * replace it with one that makes sure the ctl_fd is open.
+ */
+
+ if (pi->tid != 0)
+ pi = find_procinfo_or_die (pi->pid, 0);
+
+ proc_iterate_over_threads (pi, proc_delete_dead_threads, NULL);
+
+ if ((nlwp = proc_get_nthreads (pi)) <= 1)
+ return 1; /* Process is not multi-threaded; nothing to do. */
+
+ prstatus = xmalloc (sizeof (gdb_prstatus_t) * (nlwp + 1));
+
+ old_chain = make_cleanup (xfree, prstatus);
+ if (ioctl (pi->ctl_fd, PIOCLSTATUS, prstatus) < 0)
+ proc_error (pi, "update_threads (PIOCLSTATUS)", __LINE__);
+
+ /* Skip element zero, which represents the process as a whole. */
+ for (i = 1; i < nlwp + 1; i++)
+ {
+ if ((thread = create_procinfo (pi->pid, prstatus[i].pr_who)) == NULL)
+ proc_error (pi, "update_threads, create_procinfo", __LINE__);
+
+ memcpy (&thread->prstatus, &prstatus[i], sizeof (*prstatus));
+ thread->status_valid = 1;
+ }
+ pi->threads_valid = 1;
+ do_cleanups (old_chain);
+ return 1;
+}
+#else
+#ifdef NEW_PROC_API
+/*
+ * Unixware and Solaris 6 (and later) version
+ */
+static void
+do_closedir_cleanup (void *dir)
+{
+ closedir (dir);
+}
+
+int
+proc_update_threads (procinfo *pi)
+{
+ char pathname[MAX_PROC_NAME_SIZE + 16];
+ struct dirent *direntry;
+ struct cleanup *old_chain = NULL;
+ procinfo *thread;
+ DIR *dirp;
+ int lwpid;
+
+ /*
+ * We should never have to apply this operation to any procinfo
+ * except the one for the main process. If that ever changes
+ * for any reason, then take out the following clause and
+ * replace it with one that makes sure the ctl_fd is open.
+ */
+
+ if (pi->tid != 0)
+ pi = find_procinfo_or_die (pi->pid, 0);
+
+ proc_iterate_over_threads (pi, proc_delete_dead_threads, NULL);
+
+ /*
+ * Unixware
+ *
+ * Note: this brute-force method is the only way I know of
+ * to accomplish this task on Unixware. This method will
+ * also work on Solaris 2.6 and 2.7. There is a much simpler
+ * and more elegant way to do this on Solaris, but the margins
+ * of this manuscript are too small to write it here... ;-)
+ */
+
+ strcpy (pathname, pi->pathname);
+ strcat (pathname, "/lwp");
+ if ((dirp = opendir (pathname)) == NULL)
+ proc_error (pi, "update_threads, opendir", __LINE__);
+
+ old_chain = make_cleanup (do_closedir_cleanup, dirp);
+ while ((direntry = readdir (dirp)) != NULL)
+ if (direntry->d_name[0] != '.') /* skip '.' and '..' */
+ {
+ lwpid = atoi (&direntry->d_name[0]);
+ if ((thread = create_procinfo (pi->pid, lwpid)) == NULL)
+ proc_error (pi, "update_threads, create_procinfo", __LINE__);
+ }
+ pi->threads_valid = 1;
+ do_cleanups (old_chain);
+ return 1;
+}
+#else
+#ifdef PIOCTLIST
+/*
+ * OSF version
+ */
+int
+proc_update_threads (procinfo *pi)
+{
+ int nthreads, i;
+ tid_t *threads;
+
+ /*
+ * We should never have to apply this operation to any procinfo
+ * except the one for the main process. If that ever changes
+ * for any reason, then take out the following clause and
+ * replace it with one that makes sure the ctl_fd is open.
+ */
+
+ if (pi->tid != 0)
+ pi = find_procinfo_or_die (pi->pid, 0);
+
+ proc_iterate_over_threads (pi, proc_delete_dead_threads, NULL);
+
+ nthreads = proc_get_nthreads (pi);
+ if (nthreads < 2)
+ return 0; /* nothing to do for 1 or fewer threads */
+
+ threads = xmalloc (nthreads * sizeof (tid_t));
+
+ if (ioctl (pi->ctl_fd, PIOCTLIST, threads) < 0)
+ proc_error (pi, "procfs: update_threads (PIOCTLIST)", __LINE__);
+
+ for (i = 0; i < nthreads; i++)
+ {
+ if (!find_procinfo (pi->pid, threads[i]))
+ if (!create_procinfo (pi->pid, threads[i]))
+ proc_error (pi, "update_threads, create_procinfo", __LINE__);
+ }
+ pi->threads_valid = 1;
+ return 1;
+}
+#else
+/*
+ * Default version
+ */
+int
+proc_update_threads (procinfo *pi)
+{
+ return 0;
+}
+#endif /* OSF PIOCTLIST */
+#endif /* NEW_PROC_API */
+#endif /* SOL 2.5 PIOCLSTATUS */
+
+/*
+ * Function: proc_iterate_over_threads
+ *
+ * Description:
+ * Given a pointer to a function, call that function once
+ * for each lwp in the procinfo list, until the function
+ * returns non-zero, in which event return the value
+ * returned by the function.
+ *
+ * Note: this function does NOT call update_threads.
+ * If you want to discover new threads first, you must
+ * call that function explicitly. This function just makes
+ * a quick pass over the currently-known procinfos.
+ *
+ * Arguments:
+ * pi - parent process procinfo
+ * func - per-thread function
+ * ptr - opaque parameter for function.
+ *
+ * Return:
+ * First non-zero return value from the callee, or zero.
+ */
+
+int
+proc_iterate_over_threads (procinfo *pi,
+ int (*func) (procinfo *, procinfo *, void *),
+ void *ptr)
+{
+ procinfo *thread, *next;
+ int retval = 0;
+
+ /*
+ * We should never have to apply this operation to any procinfo
+ * except the one for the main process. If that ever changes
+ * for any reason, then take out the following clause and
+ * replace it with one that makes sure the ctl_fd is open.
+ */
+
+ if (pi->tid != 0)
+ pi = find_procinfo_or_die (pi->pid, 0);
+
+ for (thread = pi->thread_list; thread != NULL; thread = next)
+ {
+ next = thread->next; /* in case thread is destroyed */
+ if ((retval = (*func) (pi, thread, ptr)) != 0)
+ break;
+ }
+
+ return retval;
+}
+
+/* =================== END, Thread "MODULE" =================== */
+
+/* =================== END, /proc "MODULE" =================== */
+
+/* =================== GDB "MODULE" =================== */
+
+/*
+ * Here are all of the gdb target vector functions and their friends.
+ */
+
+static ptid_t do_attach (ptid_t ptid);
+static void do_detach (int signo);
+static int register_gdb_signals (procinfo *, gdb_sigset_t *);
+
+/*
+ * Function: procfs_debug_inferior
+ *
+ * Sets up the inferior to be debugged.
+ * Registers to trace signals, hardware faults, and syscalls.
+ * Note: does not set RLC flag: caller may want to customize that.
+ *
+ * Returns: zero for success (note! unlike most functions in this module)
+ * On failure, returns the LINE NUMBER where it failed!
+ */
+
+static int
+procfs_debug_inferior (procinfo *pi)
+{
+ fltset_t traced_faults;
+ gdb_sigset_t traced_signals;
+ sysset_t *traced_syscall_entries;
+ sysset_t *traced_syscall_exits;
+ int status;
+
+#ifdef PROCFS_DONT_TRACE_FAULTS
+ /* On some systems (OSF), we don't trace hardware faults.
+ Apparently it's enough that we catch them as signals.
+ Wonder why we don't just do that in general? */
+ premptyset (&traced_faults); /* don't trace faults. */
+#else
+ /* Register to trace hardware faults in the child. */
+ prfillset (&traced_faults); /* trace all faults... */
+ prdelset (&traced_faults, FLTPAGE); /* except page fault. */
+#endif
+ if (!proc_set_traced_faults (pi, &traced_faults))
+ return __LINE__;
+
+ /* Register to trace selected signals in the child. */
+ premptyset (&traced_signals);
+ if (!register_gdb_signals (pi, &traced_signals))
+ return __LINE__;
+
+
+ /* Register to trace the 'exit' system call (on entry). */
+ traced_syscall_entries = sysset_t_alloc (pi);
+ gdb_premptysysset (traced_syscall_entries);
+#ifdef SYS_exit
+ gdb_praddsysset (traced_syscall_entries, SYS_exit);
+#endif
+#ifdef SYS_lwpexit
+ gdb_praddsysset (traced_syscall_entries, SYS_lwpexit); /* And _lwp_exit... */
+#endif
+#ifdef SYS_lwp_exit
+ gdb_praddsysset (traced_syscall_entries, SYS_lwp_exit);
+#endif
+#ifdef DYNAMIC_SYSCALLS
+ {
+ int callnum = find_syscall (pi, "_exit");
+ if (callnum >= 0)
+ gdb_praddsysset (traced_syscall_entries, callnum);
+ }
+#endif
+
+ status = proc_set_traced_sysentry (pi, traced_syscall_entries);
+ xfree (traced_syscall_entries);
+ if (!status)
+ return __LINE__;
+
+#ifdef PRFS_STOPEXEC /* defined on OSF */
+ /* OSF method for tracing exec syscalls. Quoting:
+ Under Alpha OSF/1 we have to use a PIOCSSPCACT ioctl to trace
+ exits from exec system calls because of the user level loader. */
+ /* FIXME: make nice and maybe move into an access function. */
+ {
+ int prfs_flags;
+
+ if (ioctl (pi->ctl_fd, PIOCGSPCACT, &prfs_flags) < 0)
+ return __LINE__;
+
+ prfs_flags |= PRFS_STOPEXEC;
+
+ if (ioctl (pi->ctl_fd, PIOCSSPCACT, &prfs_flags) < 0)
+ return __LINE__;
+ }
+#else /* not PRFS_STOPEXEC */
+ /* Everyone else's (except OSF) method for tracing exec syscalls */
+ /* GW: Rationale...
+ Not all systems with /proc have all the exec* syscalls with the same
+ names. On the SGI, for example, there is no SYS_exec, but there
+ *is* a SYS_execv. So, we try to account for that. */
+
+ traced_syscall_exits = sysset_t_alloc (pi);
+ gdb_premptysysset (traced_syscall_exits);
+#ifdef SYS_exec
+ gdb_praddsysset (traced_syscall_exits, SYS_exec);
+#endif
+#ifdef SYS_execve
+ gdb_praddsysset (traced_syscall_exits, SYS_execve);
+#endif
+#ifdef SYS_execv
+ gdb_praddsysset (traced_syscall_exits, SYS_execv);
+#endif
+
+#ifdef SYS_lwpcreate
+ gdb_praddsysset (traced_syscall_exits, SYS_lwpcreate);
+ gdb_praddsysset (traced_syscall_exits, SYS_lwpexit);
+#endif
+
+#ifdef SYS_lwp_create /* FIXME: once only, please */
+ gdb_praddsysset (traced_syscall_exits, SYS_lwp_create);
+ gdb_praddsysset (traced_syscall_exits, SYS_lwp_exit);
+#endif
+
+#ifdef DYNAMIC_SYSCALLS
+ {
+ int callnum = find_syscall (pi, "execve");
+ if (callnum >= 0)
+ gdb_praddsysset (traced_syscall_exits, callnum);
+ callnum = find_syscall (pi, "ra_execve");
+ if (callnum >= 0)
+ gdb_praddsysset (traced_syscall_exits, callnum);
+ }
+#endif
+
+ status = proc_set_traced_sysexit (pi, traced_syscall_exits);
+ xfree (traced_syscall_exits);
+ if (!status)
+ return __LINE__;
+
+#endif /* PRFS_STOPEXEC */
+ return 0;
+}
+
+static void
+procfs_attach (char *args, int from_tty)
+{
+ char *exec_file;
+ int pid;
+
+ if (!args)
+ error_no_arg ("process-id to attach");
+
+ pid = atoi (args);
+ if (pid == getpid ())
+ error ("Attaching GDB to itself is not a good idea...");
+
+ if (from_tty)
+ {
+ exec_file = get_exec_file (0);
+
+ if (exec_file)
+ printf_filtered ("Attaching to program `%s', %s\n",
+ exec_file, target_pid_to_str (pid_to_ptid (pid)));
+ else
+ printf_filtered ("Attaching to %s\n",
+ target_pid_to_str (pid_to_ptid (pid)));
+
+ fflush (stdout);
+ }
+ inferior_ptid = do_attach (pid_to_ptid (pid));
+ push_target (&procfs_ops);
+}
+
+static void
+procfs_detach (char *args, int from_tty)
+{
+ char *exec_file;
+ int signo = 0;
+
+ if (from_tty)
+ {
+ exec_file = get_exec_file (0);
+ if (exec_file == 0)
+ exec_file = "";
+ printf_filtered ("Detaching from program: %s %s\n",
+ exec_file, target_pid_to_str (inferior_ptid));
+ fflush (stdout);
+ }
+ if (args)
+ signo = atoi (args);
+
+ do_detach (signo);
+ inferior_ptid = null_ptid;
+ unpush_target (&procfs_ops); /* Pop out of handling an inferior */
+}
+
+static ptid_t
+do_attach (ptid_t ptid)
+{
+ procinfo *pi;
+ int fail;
+
+ if ((pi = create_procinfo (PIDGET (ptid), 0)) == NULL)
+ perror ("procfs: out of memory in 'attach'");
+
+ if (!open_procinfo_files (pi, FD_CTL))
+ {
+ fprintf_filtered (gdb_stderr, "procfs:%d -- ", __LINE__);
+ sprintf (errmsg, "do_attach: couldn't open /proc file for process %d",
+ PIDGET (ptid));
+ dead_procinfo (pi, errmsg, NOKILL);
+ }
+
+ /* Stop the process (if it isn't already stopped). */
+ if (proc_flags (pi) & (PR_STOPPED | PR_ISTOP))
+ {
+ pi->was_stopped = 1;
+ proc_prettyprint_why (proc_why (pi), proc_what (pi), 1);
+ }
+ else
+ {
+ pi->was_stopped = 0;
+ /* Set the process to run again when we close it. */
+ if (!proc_set_run_on_last_close (pi))
+ dead_procinfo (pi, "do_attach: couldn't set RLC.", NOKILL);
+
+ /* Now stop the process. */
+ if (!proc_stop_process (pi))
+ dead_procinfo (pi, "do_attach: couldn't stop the process.", NOKILL);
+ pi->ignore_next_sigstop = 1;
+ }
+ /* Save some of the /proc state to be restored if we detach. */
+ if (!proc_get_traced_faults (pi, &pi->saved_fltset))
+ dead_procinfo (pi, "do_attach: couldn't save traced faults.", NOKILL);
+ if (!proc_get_traced_signals (pi, &pi->saved_sigset))
+ dead_procinfo (pi, "do_attach: couldn't save traced signals.", NOKILL);
+ if (!proc_get_traced_sysentry (pi, pi->saved_entryset))
+ dead_procinfo (pi, "do_attach: couldn't save traced syscall entries.",
+ NOKILL);
+ if (!proc_get_traced_sysexit (pi, pi->saved_exitset))
+ dead_procinfo (pi, "do_attach: couldn't save traced syscall exits.",
+ NOKILL);
+ if (!proc_get_held_signals (pi, &pi->saved_sighold))
+ dead_procinfo (pi, "do_attach: couldn't save held signals.", NOKILL);
+
+ if ((fail = procfs_debug_inferior (pi)) != 0)
+ dead_procinfo (pi, "do_attach: failed in procfs_debug_inferior", NOKILL);
+
+ /* Let GDB know that the inferior was attached. */
+ attach_flag = 1;
+ return MERGEPID (pi->pid, proc_get_current_thread (pi));
+}
+
+static void
+do_detach (int signo)
+{
+ procinfo *pi;
+
+ /* Find procinfo for the main process */
+ pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0); /* FIXME: threads */
+ if (signo)
+ if (!proc_set_current_signal (pi, signo))
+ proc_warn (pi, "do_detach, set_current_signal", __LINE__);
+
+ if (!proc_set_traced_signals (pi, &pi->saved_sigset))
+ proc_warn (pi, "do_detach, set_traced_signal", __LINE__);
+
+ if (!proc_set_traced_faults (pi, &pi->saved_fltset))
+ proc_warn (pi, "do_detach, set_traced_faults", __LINE__);
+
+ if (!proc_set_traced_sysentry (pi, pi->saved_entryset))
+ proc_warn (pi, "do_detach, set_traced_sysentry", __LINE__);
+
+ if (!proc_set_traced_sysexit (pi, pi->saved_exitset))
+ proc_warn (pi, "do_detach, set_traced_sysexit", __LINE__);
+
+ if (!proc_set_held_signals (pi, &pi->saved_sighold))
+ proc_warn (pi, "do_detach, set_held_signals", __LINE__);
+
+ if (signo || (proc_flags (pi) & (PR_STOPPED | PR_ISTOP)))
+ if (signo || !(pi->was_stopped) ||
+ query ("Was stopped when attached, make it runnable again? "))
+ {
+ /* Clear any pending signal. */
+ if (!proc_clear_current_fault (pi))
+ proc_warn (pi, "do_detach, clear_current_fault", __LINE__);
+
+ if (signo == 0 && !proc_clear_current_signal (pi))
+ proc_warn (pi, "do_detach, clear_current_signal", __LINE__);
+
+ if (!proc_set_run_on_last_close (pi))
+ proc_warn (pi, "do_detach, set_rlc", __LINE__);
+ }
+
+ attach_flag = 0;
+ destroy_procinfo (pi);
+}
+
+/*
+ * fetch_registers
+ *
+ * Since the /proc interface cannot give us individual registers,
+ * we pay no attention to the (regno) argument, and just fetch them all.
+ * This results in the possibility that we will do unnecessarily many
+ * fetches, since we may be called repeatedly for individual registers.
+ * So we cache the results, and mark the cache invalid when the process
+ * is resumed.
+ */
+
+static void
+procfs_fetch_registers (int regno)
+{
+ gdb_fpregset_t *fpregs;
+ gdb_gregset_t *gregs;
+ procinfo *pi;
+ int pid;
+ int tid;
+
+ pid = PIDGET (inferior_ptid);
+ tid = TIDGET (inferior_ptid);
+
+ /* First look up procinfo for the main process. */
+ pi = find_procinfo_or_die (pid, 0);
+
+ /* If the event thread is not the same as GDB's requested thread
+ (ie. inferior_ptid), then look up procinfo for the requested
+ thread. */
+ if ((tid != 0) &&
+ (tid != proc_get_current_thread (pi)))
+ pi = find_procinfo_or_die (pid, tid);
+
+ if (pi == NULL)
+ error ("procfs: fetch_registers failed to find procinfo for %s",
+ target_pid_to_str (inferior_ptid));
+
+ if ((gregs = proc_get_gregs (pi)) == NULL)
+ proc_error (pi, "fetch_registers, get_gregs", __LINE__);
+
+ supply_gregset (gregs);
+
+ if (FP0_REGNUM >= 0) /* need floating point? */
+ {
+ if ((regno >= 0 && regno < FP0_REGNUM) ||
+ regno == PC_REGNUM ||
+ (NPC_REGNUM >= 0 && regno == NPC_REGNUM) ||
+ regno == FP_REGNUM ||
+ regno == SP_REGNUM)
+ return; /* not a floating point register */
+
+ if ((fpregs = proc_get_fpregs (pi)) == NULL)
+ proc_error (pi, "fetch_registers, get_fpregs", __LINE__);
+
+ supply_fpregset (fpregs);
+ }
+}
+
+/* Get ready to modify the registers array. On machines which store
+ individual registers, this doesn't need to do anything. On
+ machines which store all the registers in one fell swoop, such as
+ /proc, this makes sure that registers contains all the registers
+ from the program being debugged. */
+
+static void
+procfs_prepare_to_store (void)
+{
+#ifdef CHILD_PREPARE_TO_STORE
+ CHILD_PREPARE_TO_STORE ();
+#endif
+}
+
+/*
+ * store_registers
+ *
+ * Since the /proc interface will not read individual registers,
+ * we will cache these requests until the process is resumed, and
+ * only then write them back to the inferior process.
+ *
+ * FIXME: is that a really bad idea? Have to think about cases
+ * where writing one register might affect the value of others, etc.
+ */
+
+static void
+procfs_store_registers (int regno)
+{
+ gdb_fpregset_t *fpregs;
+ gdb_gregset_t *gregs;
+ procinfo *pi;
+ int pid;
+ int tid;
+
+ pid = PIDGET (inferior_ptid);
+ tid = TIDGET (inferior_ptid);
+
+ /* First find procinfo for main process */
+ pi = find_procinfo_or_die (pid, 0);
+
+ /* If current lwp for process is not the same as requested thread
+ (ie. inferior_ptid), then find procinfo for the requested thread. */
+
+ if ((tid != 0) &&
+ (tid != proc_get_current_thread (pi)))
+ pi = find_procinfo_or_die (pid, tid);
+
+ if (pi == NULL)
+ error ("procfs: store_registers: failed to find procinfo for %s",
+ target_pid_to_str (inferior_ptid));
+
+ if ((gregs = proc_get_gregs (pi)) == NULL)
+ proc_error (pi, "store_registers, get_gregs", __LINE__);
+
+ fill_gregset (gregs, regno);
+ if (!proc_set_gregs (pi))
+ proc_error (pi, "store_registers, set_gregs", __LINE__);
+
+ if (FP0_REGNUM >= 0) /* need floating point? */
+ {
+ if ((regno >= 0 && regno < FP0_REGNUM) ||
+ regno == PC_REGNUM ||
+ (NPC_REGNUM >= 0 && regno == NPC_REGNUM) ||
+ regno == FP_REGNUM ||
+ regno == SP_REGNUM)
+ return; /* not a floating point register */
+
+ if ((fpregs = proc_get_fpregs (pi)) == NULL)
+ proc_error (pi, "store_registers, get_fpregs", __LINE__);
+
+ fill_fpregset (fpregs, regno);
+ if (!proc_set_fpregs (pi))
+ proc_error (pi, "store_registers, set_fpregs", __LINE__);
+ }
+}
+
+static int
+syscall_is_lwp_exit (procinfo *pi, int scall)
+{
+
+#ifdef SYS_lwp_exit
+ if (scall == SYS_lwp_exit)
+ return 1;
+#endif
+#ifdef SYS_lwpexit
+ if (scall == SYS_lwpexit)
+ return 1;
+#endif
+ return 0;
+}
+
+static int
+syscall_is_exit (procinfo *pi, int scall)
+{
+#ifdef SYS_exit
+ if (scall == SYS_exit)
+ return 1;
+#endif
+#ifdef DYNAMIC_SYSCALLS
+ if (find_syscall (pi, "_exit") == scall)
+ return 1;
+#endif
+ return 0;
+}
+
+static int
+syscall_is_exec (procinfo *pi, int scall)
+{
+#ifdef SYS_exec
+ if (scall == SYS_exec)
+ return 1;
+#endif
+#ifdef SYS_execv
+ if (scall == SYS_execv)
+ return 1;
+#endif
+#ifdef SYS_execve
+ if (scall == SYS_execve)
+ return 1;
+#endif
+#ifdef DYNAMIC_SYSCALLS
+ if (find_syscall (pi, "_execve"))
+ return 1;
+ if (find_syscall (pi, "ra_execve"))
+ return 1;
+#endif
+ return 0;
+}
+
+static int
+syscall_is_lwp_create (procinfo *pi, int scall)
+{
+#ifdef SYS_lwp_create
+ if (scall == SYS_lwp_create)
+ return 1;
+#endif
+#ifdef SYS_lwpcreate
+ if (scall == SYS_lwpcreate)
+ return 1;
+#endif
+ return 0;
+}
+
+/*
+ * Function: target_wait
+ *
+ * Retrieve the next stop event from the child process.
+ * If child has not stopped yet, wait for it to stop.
+ * Translate /proc eventcodes (or possibly wait eventcodes)
+ * into gdb internal event codes.
+ *
+ * Return: id of process (and possibly thread) that incurred the event.
+ * event codes are returned thru a pointer parameter.
+ */
+
+static ptid_t
+procfs_wait (ptid_t ptid, struct target_waitstatus *status)
+{
+ /* First cut: loosely based on original version 2.1 */
+ procinfo *pi;
+ int wstat;
+ int temp_tid;
+ ptid_t retval, temp_ptid;
+ int why, what, flags;
+ int retry = 0;
+
+wait_again:
+
+ retry++;
+ wstat = 0;
+ retval = pid_to_ptid (-1);
+
+ /* Find procinfo for main process */
+ pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
+ if (pi)
+ {
+ /* We must assume that the status is stale now... */
+ pi->status_valid = 0;
+ pi->gregs_valid = 0;
+ pi->fpregs_valid = 0;
+
+#if 0 /* just try this out... */
+ flags = proc_flags (pi);
+ why = proc_why (pi);
+ if ((flags & PR_STOPPED) && (why == PR_REQUESTED))
+ pi->status_valid = 0; /* re-read again, IMMEDIATELY... */
+#endif
+ /* If child is not stopped, wait for it to stop. */
+ if (!(proc_flags (pi) & (PR_STOPPED | PR_ISTOP)) &&
+ !proc_wait_for_stop (pi))
+ {
+ /* wait_for_stop failed: has the child terminated? */
+ if (errno == ENOENT)
+ {
+ int wait_retval;
+
+ /* /proc file not found; presumably child has terminated. */
+ wait_retval = wait (&wstat); /* "wait" for the child's exit */
+
+ if (wait_retval != PIDGET (inferior_ptid)) /* wrong child? */
+ error ("procfs: couldn't stop process %d: wait returned %d\n",
+ PIDGET (inferior_ptid), wait_retval);
+ /* FIXME: might I not just use waitpid?
+ Or try find_procinfo to see if I know about this child? */
+ retval = pid_to_ptid (wait_retval);
+ }
+ else if (errno == EINTR)
+ goto wait_again;
+ else
+ {
+ /* Unknown error from wait_for_stop. */
+ proc_error (pi, "target_wait (wait_for_stop)", __LINE__);
+ }
+ }
+ else
+ {
+ /* This long block is reached if either:
+ a) the child was already stopped, or
+ b) we successfully waited for the child with wait_for_stop.
+ This block will analyze the /proc status, and translate it
+ into a waitstatus for GDB.
+
+ If we actually had to call wait because the /proc file
+ is gone (child terminated), then we skip this block,
+ because we already have a waitstatus. */
+
+ flags = proc_flags (pi);
+ why = proc_why (pi);
+ what = proc_what (pi);
+
+ if (flags & (PR_STOPPED | PR_ISTOP))
+ {
+#ifdef PR_ASYNC
+ /* If it's running async (for single_thread control),
+ set it back to normal again. */
+ if (flags & PR_ASYNC)
+ if (!proc_unset_async (pi))
+ proc_error (pi, "target_wait, unset_async", __LINE__);
+#endif
+
+ if (info_verbose)
+ proc_prettyprint_why (why, what, 1);
+
+ /* The 'pid' we will return to GDB is composed of
+ the process ID plus the lwp ID. */
+ retval = MERGEPID (pi->pid, proc_get_current_thread (pi));
+
+ switch (why) {
+ case PR_SIGNALLED:
+ wstat = (what << 8) | 0177;
+ break;
+ case PR_SYSENTRY:
+ if (syscall_is_lwp_exit (pi, what))
+ {
+ printf_filtered ("[%s exited]\n",
+ target_pid_to_str (retval));
+ delete_thread (retval);
+ status->kind = TARGET_WAITKIND_SPURIOUS;
+ return retval;
+ }
+ else if (syscall_is_exit (pi, what))
+ {
+ /* Handle SYS_exit call only */
+ /* Stopped at entry to SYS_exit.
+ Make it runnable, resume it, then use
+ the wait system call to get its exit code.
+ Proc_run_process always clears the current
+ fault and signal.
+ Then return its exit status. */
+ pi->status_valid = 0;
+ wstat = 0;
+ /* FIXME: what we should do is return
+ TARGET_WAITKIND_SPURIOUS. */
+ if (!proc_run_process (pi, 0, 0))
+ proc_error (pi, "target_wait, run_process", __LINE__);
+ if (attach_flag)
+ {
+ /* Don't call wait: simulate waiting for exit,
+ return a "success" exit code. Bogus: what if
+ it returns something else? */
+ wstat = 0;
+ retval = inferior_ptid; /* ? ? ? */
+ }
+ else
+ {
+ int temp = wait (&wstat);
+
+ /* FIXME: shouldn't I make sure I get the right
+ event from the right process? If (for
+ instance) I have killed an earlier inferior
+ process but failed to clean up after it
+ somehow, I could get its termination event
+ here. */
+
+ /* If wait returns -1, that's what we return to GDB. */
+ if (temp < 0)
+ retval = pid_to_ptid (temp);
+ }
+ }
+ else
+ {
+ printf_filtered ("procfs: trapped on entry to ");
+ proc_prettyprint_syscall (proc_what (pi), 0);
+ printf_filtered ("\n");
+#ifndef PIOCSSPCACT
+ {
+ long i, nsysargs, *sysargs;
+
+ if ((nsysargs = proc_nsysarg (pi)) > 0 &&
+ (sysargs = proc_sysargs (pi)) != NULL)
+ {
+ printf_filtered ("%ld syscall arguments:\n", nsysargs);
+ for (i = 0; i < nsysargs; i++)
+ printf_filtered ("#%ld: 0x%08lx\n",
+ i, sysargs[i]);
+ }
+
+ }
+#endif
+ if (status)
+ {
+ /* How to exit gracefully, returning "unknown event" */
+ status->kind = TARGET_WAITKIND_SPURIOUS;
+ return inferior_ptid;
+ }
+ else
+ {
+ /* How to keep going without returning to wfi: */
+ target_resume (ptid, 0, TARGET_SIGNAL_0);
+ goto wait_again;
+ }
+ }
+ break;
+ case PR_SYSEXIT:
+ if (syscall_is_exec (pi, what))
+ {
+ /* Hopefully this is our own "fork-child" execing
+ the real child. Hoax this event into a trap, and
+ GDB will see the child about to execute its start
+ address. */
+ wstat = (SIGTRAP << 8) | 0177;
+ }
+ else if (syscall_is_lwp_create (pi, what))
+ {
+ /*
+ * This syscall is somewhat like fork/exec.
+ * We will get the event twice: once for the parent LWP,
+ * and once for the child. We should already know about
+ * the parent LWP, but the child will be new to us. So,
+ * whenever we get this event, if it represents a new
+ * thread, simply add the thread to the list.
+ */
+
+ /* If not in procinfo list, add it. */
+ temp_tid = proc_get_current_thread (pi);
+ if (!find_procinfo (pi->pid, temp_tid))
+ create_procinfo (pi->pid, temp_tid);
+
+ temp_ptid = MERGEPID (pi->pid, temp_tid);
+ /* If not in GDB's thread list, add it. */
+ if (!in_thread_list (temp_ptid))
+ {
+ printf_filtered ("[New %s]\n",
+ target_pid_to_str (temp_ptid));
+ add_thread (temp_ptid);
+ }
+ /* Return to WFI, but tell it to immediately resume. */
+ status->kind = TARGET_WAITKIND_SPURIOUS;
+ return inferior_ptid;
+ }
+ else if (syscall_is_lwp_exit (pi, what))
+ {
+ printf_filtered ("[%s exited]\n",
+ target_pid_to_str (retval));
+ delete_thread (retval);
+ status->kind = TARGET_WAITKIND_SPURIOUS;
+ return retval;
+ }
+ else if (0)
+ {
+ /* FIXME: Do we need to handle SYS_sproc,
+ SYS_fork, or SYS_vfork here? The old procfs
+ seemed to use this event to handle threads on
+ older (non-LWP) systems, where I'm assuming
+ that threads were actually separate processes.
+ Irix, maybe? Anyway, low priority for now. */
+ }
+ else
+ {
+ printf_filtered ("procfs: trapped on exit from ");
+ proc_prettyprint_syscall (proc_what (pi), 0);
+ printf_filtered ("\n");
+#ifndef PIOCSSPCACT
+ {
+ long i, nsysargs, *sysargs;
+
+ if ((nsysargs = proc_nsysarg (pi)) > 0 &&
+ (sysargs = proc_sysargs (pi)) != NULL)
+ {
+ printf_filtered ("%ld syscall arguments:\n", nsysargs);
+ for (i = 0; i < nsysargs; i++)
+ printf_filtered ("#%ld: 0x%08lx\n",
+ i, sysargs[i]);
+ }
+ }
+#endif
+ status->kind = TARGET_WAITKIND_SPURIOUS;
+ return inferior_ptid;
+ }
+ break;
+ case PR_REQUESTED:
+#if 0 /* FIXME */
+ wstat = (SIGSTOP << 8) | 0177;
+ break;
+#else
+ if (retry < 5)
+ {
+ printf_filtered ("Retry #%d:\n", retry);
+ pi->status_valid = 0;
+ goto wait_again;
+ }
+ else
+ {
+ /* If not in procinfo list, add it. */
+ temp_tid = proc_get_current_thread (pi);
+ if (!find_procinfo (pi->pid, temp_tid))
+ create_procinfo (pi->pid, temp_tid);
+
+ /* If not in GDB's thread list, add it. */
+ temp_ptid = MERGEPID (pi->pid, temp_tid);
+ if (!in_thread_list (temp_ptid))
+ {
+ printf_filtered ("[New %s]\n",
+ target_pid_to_str (temp_ptid));
+ add_thread (temp_ptid);
+ }
+
+ status->kind = TARGET_WAITKIND_STOPPED;
+ status->value.sig = 0;
+ return retval;
+ }
+#endif
+ case PR_JOBCONTROL:
+ wstat = (what << 8) | 0177;
+ break;
+ case PR_FAULTED:
+ switch (what) { /* FIXME: FAULTED_USE_SIGINFO */
+#ifdef FLTWATCH
+ case FLTWATCH:
+ wstat = (SIGTRAP << 8) | 0177;
+ break;
+#endif
+#ifdef FLTKWATCH
+ case FLTKWATCH:
+ wstat = (SIGTRAP << 8) | 0177;
+ break;
+#endif
+ /* FIXME: use si_signo where possible. */
+ case FLTPRIV:
+#if (FLTILL != FLTPRIV) /* avoid "duplicate case" error */
+ case FLTILL:
+#endif
+ wstat = (SIGILL << 8) | 0177;
+ break;
+ case FLTBPT:
+#if (FLTTRACE != FLTBPT) /* avoid "duplicate case" error */
+ case FLTTRACE:
+#endif
+ wstat = (SIGTRAP << 8) | 0177;
+ break;
+ case FLTSTACK:
+ case FLTACCESS:
+#if (FLTBOUNDS != FLTSTACK) /* avoid "duplicate case" error */
+ case FLTBOUNDS:
+#endif
+ wstat = (SIGSEGV << 8) | 0177;
+ break;
+ case FLTIOVF:
+ case FLTIZDIV:
+#if (FLTFPE != FLTIOVF) /* avoid "duplicate case" error */
+ case FLTFPE:
+#endif
+ wstat = (SIGFPE << 8) | 0177;
+ break;
+ case FLTPAGE: /* Recoverable page fault */
+ default: /* FIXME: use si_signo if possible for fault */
+ retval = pid_to_ptid (-1);
+ printf_filtered ("procfs:%d -- ", __LINE__);
+ printf_filtered ("child stopped for unknown reason:\n");
+ proc_prettyprint_why (why, what, 1);
+ error ("... giving up...");
+ break;
+ }
+ break; /* case PR_FAULTED: */
+ default: /* switch (why) unmatched */
+ printf_filtered ("procfs:%d -- ", __LINE__);
+ printf_filtered ("child stopped for unknown reason:\n");
+ proc_prettyprint_why (why, what, 1);
+ error ("... giving up...");
+ break;
+ }
+ /*
+ * Got this far without error:
+ * If retval isn't in the threads database, add it.
+ */
+ if (PIDGET (retval) > 0 &&
+ !ptid_equal (retval, inferior_ptid) &&
+ !in_thread_list (retval))
+ {
+ /*
+ * We have a new thread.
+ * We need to add it both to GDB's list and to our own.
+ * If we don't create a procinfo, resume may be unhappy
+ * later.
+ */
+ printf_filtered ("[New %s]\n", target_pid_to_str (retval));
+ add_thread (retval);
+ if (find_procinfo (PIDGET (retval), TIDGET (retval)) == NULL)
+ create_procinfo (PIDGET (retval), TIDGET (retval));
+
+ /* In addition, it's possible that this is the first
+ * new thread we've seen, in which case we may not
+ * have created entries for inferior_ptid yet.
+ */
+ if (TIDGET (inferior_ptid) != 0)
+ {
+ if (!in_thread_list (inferior_ptid))
+ add_thread (inferior_ptid);
+ if (find_procinfo (PIDGET (inferior_ptid),
+ TIDGET (inferior_ptid)) == NULL)
+ create_procinfo (PIDGET (inferior_ptid),
+ TIDGET (inferior_ptid));
+ }
+ }
+ }
+ else /* flags do not indicate STOPPED */
+ {
+ /* surely this can't happen... */
+ printf_filtered ("procfs:%d -- process not stopped.\n",
+ __LINE__);
+ proc_prettyprint_flags (flags, 1);
+ error ("procfs: ...giving up...");
+ }
+ }
+
+ if (status)
+ store_waitstatus (status, wstat);
+ }
+
+ return retval;
+}
+
+/* Transfer LEN bytes between GDB address MYADDR and target address
+ MEMADDR. If DOWRITE is non-zero, transfer them to the target,
+ otherwise transfer them from the target. TARGET is unused.
+
+ The return value is 0 if an error occurred or no bytes were
+ transferred. Otherwise, it will be a positive value which
+ indicates the number of bytes transferred between gdb and the
+ target. (Note that the interface also makes provisions for
+ negative values, but this capability isn't implemented here.) */
+
+static int
+procfs_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int dowrite,
+ struct mem_attrib *attrib, struct target_ops *target)
+{
+ procinfo *pi;
+ int nbytes = 0;
+
+ /* Find procinfo for main process */
+ pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
+ if (pi->as_fd == 0 &&
+ open_procinfo_files (pi, FD_AS) == 0)
+ {
+ proc_warn (pi, "xfer_memory, open_proc_files", __LINE__);
+ return 0;
+ }
+
+ if (lseek (pi->as_fd, (off_t) memaddr, SEEK_SET) == (off_t) memaddr)
+ {
+ if (dowrite)
+ {
+#ifdef NEW_PROC_API
+ PROCFS_NOTE ("write memory: ");
+#else
+ PROCFS_NOTE ("write memory: \n");
+#endif
+ nbytes = write (pi->as_fd, myaddr, len);
+ }
+ else
+ {
+ PROCFS_NOTE ("read memory: \n");
+ nbytes = read (pi->as_fd, myaddr, len);
+ }
+ if (nbytes < 0)
+ {
+ nbytes = 0;
+ }
+ }
+ return nbytes;
+}
+
+/*
+ * Function: invalidate_cache
+ *
+ * Called by target_resume before making child runnable.
+ * Mark cached registers and status's invalid.
+ * If there are "dirty" caches that need to be written back
+ * to the child process, do that.
+ *
+ * File descriptors are also cached.
+ * As they are a limited resource, we cannot hold onto them indefinitely.
+ * However, as they are expensive to open, we don't want to throw them
+ * away indescriminately either. As a compromise, we will keep the
+ * file descriptors for the parent process, but discard any file
+ * descriptors we may have accumulated for the threads.
+ *
+ * Return value:
+ * As this function is called by iterate_over_threads, it always
+ * returns zero (so that iterate_over_threads will keep iterating).
+ */
+
+
+static int
+invalidate_cache (procinfo *parent, procinfo *pi, void *ptr)
+{
+ /*
+ * About to run the child; invalidate caches and do any other cleanup.
+ */
+
+#if 0
+ if (pi->gregs_dirty)
+ if (parent == NULL ||
+ proc_get_current_thread (parent) != pi->tid)
+ if (!proc_set_gregs (pi)) /* flush gregs cache */
+ proc_warn (pi, "target_resume, set_gregs",
+ __LINE__);
+ if (FP0_REGNUM >= 0)
+ if (pi->fpregs_dirty)
+ if (parent == NULL ||
+ proc_get_current_thread (parent) != pi->tid)
+ if (!proc_set_fpregs (pi)) /* flush fpregs cache */
+ proc_warn (pi, "target_resume, set_fpregs",
+ __LINE__);
+#endif
+
+ if (parent != NULL)
+ {
+ /* The presence of a parent indicates that this is an LWP.
+ Close any file descriptors that it might have open.
+ We don't do this to the master (parent) procinfo. */
+
+ close_procinfo_files (pi);
+ }
+ pi->gregs_valid = 0;
+ pi->fpregs_valid = 0;
+#if 0
+ pi->gregs_dirty = 0;
+ pi->fpregs_dirty = 0;
+#endif
+ pi->status_valid = 0;
+ pi->threads_valid = 0;
+
+ return 0;
+}
+
+#if 0
+/*
+ * Function: make_signal_thread_runnable
+ *
+ * A callback function for iterate_over_threads.
+ * Find the asynchronous signal thread, and make it runnable.
+ * See if that helps matters any.
+ */
+
+static int
+make_signal_thread_runnable (procinfo *process, procinfo *pi, void *ptr)
+{
+#ifdef PR_ASLWP
+ if (proc_flags (pi) & PR_ASLWP)
+ {
+ if (!proc_run_process (pi, 0, -1))
+ proc_error (pi, "make_signal_thread_runnable", __LINE__);
+ return 1;
+ }
+#endif
+ return 0;
+}
+#endif
+
+/*
+ * Function: target_resume
+ *
+ * Make the child process runnable. Normally we will then call
+ * procfs_wait and wait for it to stop again (unles gdb is async).
+ *
+ * Arguments:
+ * step: if true, then arrange for the child to stop again
+ * after executing a single instruction.
+ * signo: if zero, then cancel any pending signal.
+ * If non-zero, then arrange for the indicated signal
+ * to be delivered to the child when it runs.
+ * pid: if -1, then allow any child thread to run.
+ * if non-zero, then allow only the indicated thread to run.
+ ******* (not implemented yet)
+ */
+
+static void
+procfs_resume (ptid_t ptid, int step, enum target_signal signo)
+{
+ procinfo *pi, *thread;
+ int native_signo;
+
+ /* 2.1:
+ prrun.prflags |= PRSVADDR;
+ prrun.pr_vaddr = $PC; set resume address
+ prrun.prflags |= PRSTRACE; trace signals in pr_trace (all)
+ prrun.prflags |= PRSFAULT; trace faults in pr_fault (all but PAGE)
+ prrun.prflags |= PRCFAULT; clear current fault.
+
+ PRSTRACE and PRSFAULT can be done by other means
+ (proc_trace_signals, proc_trace_faults)
+ PRSVADDR is unnecessary.
+ PRCFAULT may be replaced by a PIOCCFAULT call (proc_clear_current_fault)
+ This basically leaves PRSTEP and PRCSIG.
+ PRCSIG is like PIOCSSIG (proc_clear_current_signal).
+ So basically PR_STEP is the sole argument that must be passed
+ to proc_run_process (for use in the prrun struct by ioctl). */
+
+ /* Find procinfo for main process */
+ pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
+
+ /* First cut: ignore pid argument */
+ errno = 0;
+
+ /* Convert signal to host numbering. */
+ if (signo == 0 ||
+ (signo == TARGET_SIGNAL_STOP && pi->ignore_next_sigstop))
+ native_signo = 0;
+ else
+ native_signo = target_signal_to_host (signo);
+
+ pi->ignore_next_sigstop = 0;
+
+ /* Running the process voids all cached registers and status. */
+ /* Void the threads' caches first */
+ proc_iterate_over_threads (pi, invalidate_cache, NULL);
+ /* Void the process procinfo's caches. */
+ invalidate_cache (NULL, pi, NULL);
+
+ if (PIDGET (ptid) != -1)
+ {
+ /* Resume a specific thread, presumably suppressing the others. */
+ thread = find_procinfo (PIDGET (ptid), TIDGET (ptid));
+ if (thread != NULL)
+ {
+ if (thread->tid != 0)
+ {
+ /* We're to resume a specific thread, and not the others.
+ * Set the child process's PR_ASYNC flag.
+ */
+#ifdef PR_ASYNC
+ if (!proc_set_async (pi))
+ proc_error (pi, "target_resume, set_async", __LINE__);
+#endif
+#if 0
+ proc_iterate_over_threads (pi,
+ make_signal_thread_runnable,
+ NULL);
+#endif
+ pi = thread; /* substitute the thread's procinfo for run */
+ }
+ }
+ }
+
+ if (!proc_run_process (pi, step, native_signo))
+ {
+ if (errno == EBUSY)
+ warning ("resume: target already running. Pretend to resume, and hope for the best!\n");
+ else
+ proc_error (pi, "target_resume", __LINE__);
+ }
+}
+
+/*
+ * Function: register_gdb_signals
+ *
+ * Traverse the list of signals that GDB knows about
+ * (see "handle" command), and arrange for the target
+ * to be stopped or not, according to these settings.
+ *
+ * Returns non-zero for success, zero for failure.
+ */
+
+static int
+register_gdb_signals (procinfo *pi, gdb_sigset_t *signals)
+{
+ int signo;
+
+ for (signo = 0; signo < NSIG; signo ++)
+ if (signal_stop_state (target_signal_from_host (signo)) == 0 &&
+ signal_print_state (target_signal_from_host (signo)) == 0 &&
+ signal_pass_state (target_signal_from_host (signo)) == 1)
+ prdelset (signals, signo);
+ else
+ praddset (signals, signo);
+
+ return proc_set_traced_signals (pi, signals);
+}
+
+/*
+ * Function: target_notice_signals
+ *
+ * Set up to trace signals in the child process.
+ */
+
+static void
+procfs_notice_signals (ptid_t ptid)
+{
+ gdb_sigset_t signals;
+ procinfo *pi = find_procinfo_or_die (PIDGET (ptid), 0);
+
+ if (proc_get_traced_signals (pi, &signals) &&
+ register_gdb_signals (pi, &signals))
+ return;
+ else
+ proc_error (pi, "notice_signals", __LINE__);
+}
+
+/*
+ * Function: target_files_info
+ *
+ * Print status information about the child process.
+ */
+
+static void
+procfs_files_info (struct target_ops *ignore)
+{
+ printf_filtered ("\tUsing the running image of %s %s via /proc.\n",
+ attach_flag? "attached": "child",
+ target_pid_to_str (inferior_ptid));
+}
+
+/*
+ * Function: target_open
+ *
+ * A dummy: you don't open procfs.
+ */
+
+static void
+procfs_open (char *args, int from_tty)
+{
+ error ("Use the \"run\" command to start a Unix child process.");
+}
+
+/*
+ * Function: target_can_run
+ *
+ * This tells GDB that this target vector can be invoked
+ * for "run" or "attach".
+ */
+
+int procfs_suppress_run = 0; /* Non-zero if procfs should pretend not to
+ be a runnable target. Used by targets
+ that can sit atop procfs, such as solaris
+ thread support. */
+
+
+static int
+procfs_can_run (void)
+{
+ /* This variable is controlled by modules that sit atop procfs that
+ may layer their own process structure atop that provided here.
+ sol-thread.c does this because of the Solaris two-level thread
+ model. */
+
+ /* NOTE: possibly obsolete -- use the thread_stratum approach instead. */
+
+ return !procfs_suppress_run;
+}
+
+/*
+ * Function: target_stop
+ *
+ * Stop the child process asynchronously, as when the
+ * gdb user types control-c or presses a "stop" button.
+ *
+ * Works by sending kill(SIGINT) to the child's process group.
+ */
+
+static void
+procfs_stop (void)
+{
+ extern pid_t inferior_process_group;
+
+ kill (-inferior_process_group, SIGINT);
+}
+
+/*
+ * Function: unconditionally_kill_inferior
+ *
+ * Make it die. Wait for it to die. Clean up after it.
+ * Note: this should only be applied to the real process,
+ * not to an LWP, because of the check for parent-process.
+ * If we need this to work for an LWP, it needs some more logic.
+ */
+
+static void
+unconditionally_kill_inferior (procinfo *pi)
+{
+ int parent_pid;
+
+ parent_pid = proc_parent_pid (pi);
+#ifdef PROCFS_NEED_CLEAR_CURSIG_FOR_KILL
+ /* FIXME: use access functions */
+ /* Alpha OSF/1-3.x procfs needs a clear of the current signal
+ before the PIOCKILL, otherwise it might generate a corrupted core
+ file for the inferior. */
+ if (ioctl (pi->ctl_fd, PIOCSSIG, NULL) < 0)
+ {
+ printf_filtered ("unconditionally_kill: SSIG failed!\n");
+ }
+#endif
+#ifdef PROCFS_NEED_PIOCSSIG_FOR_KILL
+ /* Alpha OSF/1-2.x procfs needs a PIOCSSIG call with a SIGKILL signal
+ to kill the inferior, otherwise it might remain stopped with a
+ pending SIGKILL.
+ We do not check the result of the PIOCSSIG, the inferior might have
+ died already. */
+ {
+ gdb_siginfo_t newsiginfo;
+
+ memset ((char *) &newsiginfo, 0, sizeof (newsiginfo));
+ newsiginfo.si_signo = SIGKILL;
+ newsiginfo.si_code = 0;
+ newsiginfo.si_errno = 0;
+ newsiginfo.si_pid = getpid ();
+ newsiginfo.si_uid = getuid ();
+ /* FIXME: use proc_set_current_signal */
+ ioctl (pi->ctl_fd, PIOCSSIG, &newsiginfo);
+ }
+#else /* PROCFS_NEED_PIOCSSIG_FOR_KILL */
+ if (!proc_kill (pi, SIGKILL))
+ proc_error (pi, "unconditionally_kill, proc_kill", __LINE__);
+#endif /* PROCFS_NEED_PIOCSSIG_FOR_KILL */
+ destroy_procinfo (pi);
+
+ /* If pi is GDB's child, wait for it to die. */
+ if (parent_pid == getpid ())
+ /* FIXME: should we use waitpid to make sure we get the right event?
+ Should we check the returned event? */
+ {
+#if 0
+ int status, ret;
+
+ ret = waitpid (pi->pid, &status, 0);
+#else
+ wait (NULL);
+#endif
+ }
+}
+
+/*
+ * Function: target_kill_inferior
+ *
+ * We're done debugging it, and we want it to go away.
+ * Then we want GDB to forget all about it.
+ */
+
+static void
+procfs_kill_inferior (void)
+{
+ if (!ptid_equal (inferior_ptid, null_ptid)) /* ? */
+ {
+ /* Find procinfo for main process */
+ procinfo *pi = find_procinfo (PIDGET (inferior_ptid), 0);
+
+ if (pi)
+ unconditionally_kill_inferior (pi);
+ target_mourn_inferior ();
+ }
+}
+
+/*
+ * Function: target_mourn_inferior
+ *
+ * Forget we ever debugged this thing!
+ */
+
+static void
+procfs_mourn_inferior (void)
+{
+ procinfo *pi;
+
+ if (!ptid_equal (inferior_ptid, null_ptid))
+ {
+ /* Find procinfo for main process */
+ pi = find_procinfo (PIDGET (inferior_ptid), 0);
+ if (pi)
+ destroy_procinfo (pi);
+ }
+ unpush_target (&procfs_ops);
+ generic_mourn_inferior ();
+}
+
+/*
+ * Function: init_inferior
+ *
+ * When GDB forks to create a runnable inferior process,
+ * this function is called on the parent side of the fork.
+ * It's job is to do whatever is necessary to make the child
+ * ready to be debugged, and then wait for the child to synchronize.
+ */
+
+static void
+procfs_init_inferior (int pid)
+{
+ procinfo *pi;
+ gdb_sigset_t signals;
+ int fail;
+
+ /* This routine called on the parent side (GDB side)
+ after GDB forks the inferior. */
+
+ push_target (&procfs_ops);
+
+ if ((pi = create_procinfo (pid, 0)) == NULL)
+ perror ("procfs: out of memory in 'init_inferior'");
+
+ if (!open_procinfo_files (pi, FD_CTL))
+ proc_error (pi, "init_inferior, open_proc_files", __LINE__);
+
+ /*
+ xmalloc // done
+ open_procinfo_files // done
+ link list // done
+ prfillset (trace)
+ procfs_notice_signals
+ prfillset (fault)
+ prdelset (FLTPAGE)
+ PIOCWSTOP
+ PIOCSFAULT
+ */
+
+ /* If not stopped yet, wait for it to stop. */
+ if (!(proc_flags (pi) & PR_STOPPED) &&
+ !(proc_wait_for_stop (pi)))
+ dead_procinfo (pi, "init_inferior: wait_for_stop failed", KILL);
+
+ /* Save some of the /proc state to be restored if we detach. */
+ /* FIXME: Why? In case another debugger was debugging it?
+ We're it's parent, for Ghu's sake! */
+ if (!proc_get_traced_signals (pi, &pi->saved_sigset))
+ proc_error (pi, "init_inferior, get_traced_signals", __LINE__);
+ if (!proc_get_held_signals (pi, &pi->saved_sighold))
+ proc_error (pi, "init_inferior, get_held_signals", __LINE__);
+ if (!proc_get_traced_faults (pi, &pi->saved_fltset))
+ proc_error (pi, "init_inferior, get_traced_faults", __LINE__);
+ if (!proc_get_traced_sysentry (pi, pi->saved_entryset))
+ proc_error (pi, "init_inferior, get_traced_sysentry", __LINE__);
+ if (!proc_get_traced_sysexit (pi, pi->saved_exitset))
+ proc_error (pi, "init_inferior, get_traced_sysexit", __LINE__);
+
+ /* Register to trace selected signals in the child. */
+ prfillset (&signals);
+ if (!register_gdb_signals (pi, &signals))
+ proc_error (pi, "init_inferior, register_signals", __LINE__);
+
+ if ((fail = procfs_debug_inferior (pi)) != 0)
+ proc_error (pi, "init_inferior (procfs_debug_inferior)", fail);
+
+ /* FIXME: logically, we should really be turning OFF run-on-last-close,
+ and possibly even turning ON kill-on-last-close at this point. But
+ I can't make that change without careful testing which I don't have
+ time to do right now... */
+ /* Turn on run-on-last-close flag so that the child
+ will die if GDB goes away for some reason. */
+ if (!proc_set_run_on_last_close (pi))
+ proc_error (pi, "init_inferior, set_RLC", __LINE__);
+
+ /* The 'process ID' we return to GDB is composed of
+ the actual process ID plus the lwp ID. */
+ inferior_ptid = MERGEPID (pi->pid, proc_get_current_thread (pi));
+
+#ifdef START_INFERIOR_TRAPS_EXPECTED
+ startup_inferior (START_INFERIOR_TRAPS_EXPECTED);
+#else
+ /* One trap to exec the shell, one to exec the program being debugged. */
+ startup_inferior (2);
+#endif /* START_INFERIOR_TRAPS_EXPECTED */
+}
+
+/*
+ * Function: set_exec_trap
+ *
+ * When GDB forks to create a new process, this function is called
+ * on the child side of the fork before GDB exec's the user program.
+ * Its job is to make the child minimally debuggable, so that the
+ * parent GDB process can connect to the child and take over.
+ * This function should do only the minimum to make that possible,
+ * and to synchronize with the parent process. The parent process
+ * should take care of the details.
+ */
+
+static void
+procfs_set_exec_trap (void)
+{
+ /* This routine called on the child side (inferior side)
+ after GDB forks the inferior. It must use only local variables,
+ because it may be sharing data space with its parent. */
+
+ procinfo *pi;
+ sysset_t *exitset;
+
+ if ((pi = create_procinfo (getpid (), 0)) == NULL)
+ perror_with_name ("procfs: create_procinfo failed in child.");
+
+ if (open_procinfo_files (pi, FD_CTL) == 0)
+ {
+ proc_warn (pi, "set_exec_trap, open_proc_files", __LINE__);
+ gdb_flush (gdb_stderr);
+ /* no need to call "dead_procinfo", because we're going to exit. */
+ _exit (127);
+ }
+
+#ifdef PRFS_STOPEXEC /* defined on OSF */
+ /* OSF method for tracing exec syscalls. Quoting:
+ Under Alpha OSF/1 we have to use a PIOCSSPCACT ioctl to trace
+ exits from exec system calls because of the user level loader. */
+ /* FIXME: make nice and maybe move into an access function. */
+ {
+ int prfs_flags;
+
+ if (ioctl (pi->ctl_fd, PIOCGSPCACT, &prfs_flags) < 0)
+ {
+ proc_warn (pi, "set_exec_trap (PIOCGSPCACT)", __LINE__);
+ gdb_flush (gdb_stderr);
+ _exit (127);
+ }
+ prfs_flags |= PRFS_STOPEXEC;
+
+ if (ioctl (pi->ctl_fd, PIOCSSPCACT, &prfs_flags) < 0)
+ {
+ proc_warn (pi, "set_exec_trap (PIOCSSPCACT)", __LINE__);
+ gdb_flush (gdb_stderr);
+ _exit (127);
+ }
+ }
+#else /* not PRFS_STOPEXEC */
+ /* Everyone else's (except OSF) method for tracing exec syscalls */
+ /* GW: Rationale...
+ Not all systems with /proc have all the exec* syscalls with the same
+ names. On the SGI, for example, there is no SYS_exec, but there
+ *is* a SYS_execv. So, we try to account for that. */
+
+ exitset = sysset_t_alloc (pi);
+ gdb_premptysysset (exitset);
+#ifdef SYS_exec
+ gdb_praddsysset (exitset, SYS_exec);
+#endif
+#ifdef SYS_execve
+ gdb_praddsysset (exitset, SYS_execve);
+#endif
+#ifdef SYS_execv
+ gdb_praddsysset (exitset, SYS_execv);
+#endif
+#ifdef DYNAMIC_SYSCALLS
+ {
+ int callnum = find_syscall (pi, "execve");
+
+ if (callnum >= 0)
+ gdb_praddsysset (exitset, callnum);
+
+ callnum = find_syscall (pi, "ra_execve");
+ if (callnum >= 0)
+ gdb_praddsysset (exitset, callnum);
+ }
+#endif /* DYNAMIC_SYSCALLS */
+
+ if (!proc_set_traced_sysexit (pi, exitset))
+ {
+ proc_warn (pi, "set_exec_trap, set_traced_sysexit", __LINE__);
+ gdb_flush (gdb_stderr);
+ _exit (127);
+ }
+#endif /* PRFS_STOPEXEC */
+
+ /* FIXME: should this be done in the parent instead? */
+ /* Turn off inherit on fork flag so that all grand-children
+ of gdb start with tracing flags cleared. */
+ if (!proc_unset_inherit_on_fork (pi))
+ proc_warn (pi, "set_exec_trap, unset_inherit", __LINE__);
+
+ /* Turn off run on last close flag, so that the child process
+ cannot run away just because we close our handle on it.
+ We want it to wait for the parent to attach. */
+ if (!proc_unset_run_on_last_close (pi))
+ proc_warn (pi, "set_exec_trap, unset_RLC", __LINE__);
+
+ /* FIXME: No need to destroy the procinfo --
+ we have our own address space, and we're about to do an exec! */
+ /*destroy_procinfo (pi);*/
+}
+
+/*
+ * Function: create_inferior
+ *
+ * This function is called BEFORE gdb forks the inferior process.
+ * Its only real responsibility is to set things up for the fork,
+ * and tell GDB which two functions to call after the fork (one
+ * for the parent, and one for the child).
+ *
+ * This function does a complicated search for a unix shell program,
+ * which it then uses to parse arguments and environment variables
+ * to be sent to the child. I wonder whether this code could not
+ * be abstracted out and shared with other unix targets such as
+ * infptrace?
+ */
+
+static void
+procfs_create_inferior (char *exec_file, char *allargs, char **env)
+{
+ char *shell_file = getenv ("SHELL");
+ char *tryname;
+ if (shell_file != NULL && strchr (shell_file, '/') == NULL)
+ {
+
+ /* We will be looking down the PATH to find shell_file. If we
+ just do this the normal way (via execlp, which operates by
+ attempting an exec for each element of the PATH until it
+ finds one which succeeds), then there will be an exec for
+ each failed attempt, each of which will cause a PR_SYSEXIT
+ stop, and we won't know how to distinguish the PR_SYSEXIT's
+ for these failed execs with the ones for successful execs
+ (whether the exec has succeeded is stored at that time in the
+ carry bit or some such architecture-specific and
+ non-ABI-specified place).
+
+ So I can't think of anything better than to search the PATH
+ now. This has several disadvantages: (1) There is a race
+ condition; if we find a file now and it is deleted before we
+ exec it, we lose, even if the deletion leaves a valid file
+ further down in the PATH, (2) there is no way to know exactly
+ what an executable (in the sense of "capable of being
+ exec'd") file is. Using access() loses because it may lose
+ if the caller is the superuser; failing to use it loses if
+ there are ACLs or some such. */
+
+ char *p;
+ char *p1;
+ /* FIXME-maybe: might want "set path" command so user can change what
+ path is used from within GDB. */
+ char *path = getenv ("PATH");
+ int len;
+ struct stat statbuf;
+
+ if (path == NULL)
+ path = "/bin:/usr/bin";
+
+ tryname = alloca (strlen (path) + strlen (shell_file) + 2);
+ for (p = path; p != NULL; p = p1 ? p1 + 1: NULL)
+ {
+ p1 = strchr (p, ':');
+ if (p1 != NULL)
+ len = p1 - p;
+ else
+ len = strlen (p);
+ strncpy (tryname, p, len);
+ tryname[len] = '\0';
+ strcat (tryname, "/");
+ strcat (tryname, shell_file);
+ if (access (tryname, X_OK) < 0)
+ continue;
+ if (stat (tryname, &statbuf) < 0)
+ continue;
+ if (!S_ISREG (statbuf.st_mode))
+ /* We certainly need to reject directories. I'm not quite
+ as sure about FIFOs, sockets, etc., but I kind of doubt
+ that people want to exec() these things. */
+ continue;
+ break;
+ }
+ if (p == NULL)
+ /* Not found. This must be an error rather than merely passing
+ the file to execlp(), because execlp() would try all the
+ exec()s, causing GDB to get confused. */
+ error ("procfs:%d -- Can't find shell %s in PATH",
+ __LINE__, shell_file);
+
+ shell_file = tryname;
+ }
+
+ fork_inferior (exec_file, allargs, env, procfs_set_exec_trap,
+ procfs_init_inferior, NULL, shell_file);
+
+ /* We are at the first instruction we care about. */
+ /* Pedal to the metal... */
+
+ proceed ((CORE_ADDR) -1, TARGET_SIGNAL_0, 0);
+}
+
+/*
+ * Function: notice_thread
+ *
+ * Callback for find_new_threads.
+ * Calls "add_thread".
+ */
+
+static int
+procfs_notice_thread (procinfo *pi, procinfo *thread, void *ptr)
+{
+ ptid_t gdb_threadid = MERGEPID (pi->pid, thread->tid);
+
+ if (!in_thread_list (gdb_threadid))
+ add_thread (gdb_threadid);
+
+ return 0;
+}
+
+/*
+ * Function: target_find_new_threads
+ *
+ * Query all the threads that the target knows about,
+ * and give them back to GDB to add to its list.
+ */
+
+void
+procfs_find_new_threads (void)
+{
+ procinfo *pi;
+
+ /* Find procinfo for main process */
+ pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
+ proc_update_threads (pi);
+ proc_iterate_over_threads (pi, procfs_notice_thread, NULL);
+}
+
+/*
+ * Function: target_thread_alive
+ *
+ * Return true if the thread is still 'alive'.
+ *
+ * This guy doesn't really seem to be doing his job.
+ * Got to investigate how to tell when a thread is really gone.
+ */
+
+static int
+procfs_thread_alive (ptid_t ptid)
+{
+ int proc, thread;
+ procinfo *pi;
+
+ proc = PIDGET (ptid);
+ thread = TIDGET (ptid);
+ /* If I don't know it, it ain't alive! */
+ if ((pi = find_procinfo (proc, thread)) == NULL)
+ return 0;
+
+ /* If I can't get its status, it ain't alive!
+ What's more, I need to forget about it! */
+ if (!proc_get_status (pi))
+ {
+ destroy_procinfo (pi);
+ return 0;
+ }
+ /* I couldn't have got its status if it weren't alive, so it's alive. */
+ return 1;
+}
+
+/*
+ * Function: target_pid_to_str
+ *
+ * Return a string to be used to identify the thread in
+ * the "info threads" display.
+ */
+
+char *
+procfs_pid_to_str (ptid_t ptid)
+{
+ static char buf[80];
+ int proc, thread;
+ procinfo *pi;
+
+ proc = PIDGET (ptid);
+ thread = TIDGET (ptid);
+ pi = find_procinfo (proc, thread);
+
+ if (thread == 0)
+ sprintf (buf, "Process %d", proc);
+ else
+ sprintf (buf, "LWP %d", thread);
+ return &buf[0];
+}
+
+/*
+ * Function: procfs_set_watchpoint
+ * Insert a watchpoint
+ */
+
+int
+procfs_set_watchpoint (ptid_t ptid, CORE_ADDR addr, int len, int rwflag,
+ int after)
+{
+#ifndef UNIXWARE
+#ifndef AIX5
+ int pflags = 0;
+ procinfo *pi;
+
+ pi = find_procinfo_or_die (PIDGET (ptid) == -1 ?
+ PIDGET (inferior_ptid) : PIDGET (ptid), 0);
+
+ /* Translate from GDB's flags to /proc's */
+ if (len > 0) /* len == 0 means delete watchpoint */
+ {
+ switch (rwflag) { /* FIXME: need an enum! */
+ case hw_write: /* default watchpoint (write) */
+ pflags = WRITE_WATCHFLAG;
+ break;
+ case hw_read: /* read watchpoint */
+ pflags = READ_WATCHFLAG;
+ break;
+ case hw_access: /* access watchpoint */
+ pflags = READ_WATCHFLAG | WRITE_WATCHFLAG;
+ break;
+ case hw_execute: /* execution HW breakpoint */
+ pflags = EXEC_WATCHFLAG;
+ break;
+ default: /* Something weird. Return error. */
+ return -1;
+ }
+ if (after) /* Stop after r/w access is completed. */
+ pflags |= AFTER_WATCHFLAG;
+ }
+
+ if (!proc_set_watchpoint (pi, addr, len, pflags))
+ {
+ if (errno == E2BIG) /* Typical error for no resources */
+ return -1; /* fail */
+ /* GDB may try to remove the same watchpoint twice.
+ If a remove request returns no match, don't error. */
+ if (errno == ESRCH && len == 0)
+ return 0; /* ignore */
+ proc_error (pi, "set_watchpoint", __LINE__);
+ }
+#endif /* AIX5 */
+#endif /* UNIXWARE */
+ return 0;
+}
+
+/* Return non-zero if we can set a hardware watchpoint of type TYPE. TYPE
+ is one of bp_hardware_watchpoint, bp_read_watchpoint, bp_write_watchpoint,
+ or bp_hardware_watchpoint. CNT is the number of watchpoints used so
+ far.
+
+ Note: procfs_can_use_hw_breakpoint() is not yet used by all
+ procfs.c targets due to the fact that some of them still define
+ TARGET_CAN_USE_HARDWARE_WATCHPOINT. */
+
+static int
+procfs_can_use_hw_breakpoint (int type, int cnt, int othertype)
+{
+#ifndef TARGET_HAS_HARDWARE_WATCHPOINTS
+ return 0;
+#else
+ /* Due to the way that proc_set_watchpoint() is implemented, host
+ and target pointers must be of the same size. If they are not,
+ we can't use hardware watchpoints. This limitation is due to the
+ fact that proc_set_watchpoint() calls address_to_host_pointer();
+ a close inspection of address_to_host_pointer will reveal that
+ an internal error will be generated when the host and target
+ pointer sizes are different. */
+ if (sizeof (void *) != TYPE_LENGTH (builtin_type_void_data_ptr))
+ return 0;
+
+ /* Other tests here??? */
+
+ return 1;
+#endif
+}
+
+/*
+ * Function: stopped_by_watchpoint
+ *
+ * Returns non-zero if process is stopped on a hardware watchpoint fault,
+ * else returns zero.
+ */
+
+int
+procfs_stopped_by_watchpoint (ptid_t ptid)
+{
+ procinfo *pi;
+
+ pi = find_procinfo_or_die (PIDGET (ptid) == -1 ?
+ PIDGET (inferior_ptid) : PIDGET (ptid), 0);
+
+ if (!pi) /* If no process, then not stopped by watchpoint! */
+ return 0;
+
+ if (proc_flags (pi) & (PR_STOPPED | PR_ISTOP))
+ {
+ if (proc_why (pi) == PR_FAULTED)
+ {
+#ifdef FLTWATCH
+ if (proc_what (pi) == FLTWATCH)
+ return 1;
+#endif
+#ifdef FLTKWATCH
+ if (proc_what (pi) == FLTKWATCH)
+ return 1;
+#endif
+ }
+ }
+ return 0;
+}
+
+#ifdef TM_I386SOL2_H
+/*
+ * Function: procfs_find_LDT_entry
+ *
+ * Input:
+ * ptid_t ptid; // The GDB-style pid-plus-LWP.
+ *
+ * Return:
+ * pointer to the corresponding LDT entry.
+ */
+
+struct ssd *
+procfs_find_LDT_entry (ptid_t ptid)
+{
+ gdb_gregset_t *gregs;
+ int key;
+ procinfo *pi;
+
+ /* Find procinfo for the lwp. */
+ if ((pi = find_procinfo (PIDGET (ptid), TIDGET (ptid))) == NULL)
+ {
+ warning ("procfs_find_LDT_entry: could not find procinfo for %d:%d.",
+ PIDGET (ptid), TIDGET (ptid));
+ return NULL;
+ }
+ /* get its general registers. */
+ if ((gregs = proc_get_gregs (pi)) == NULL)
+ {
+ warning ("procfs_find_LDT_entry: could not read gregs for %d:%d.",
+ PIDGET (ptid), TIDGET (ptid));
+ return NULL;
+ }
+ /* Now extract the GS register's lower 16 bits. */
+ key = (*gregs)[GS] & 0xffff;
+
+ /* Find the matching entry and return it. */
+ return proc_get_LDT_entry (pi, key);
+}
+#endif /* TM_I386SOL2_H */
+
+/*
+ * Memory Mappings Functions:
+ */
+
+/*
+ * Function: iterate_over_mappings
+ *
+ * Call a callback function once for each mapping, passing it the mapping,
+ * an optional secondary callback function, and some optional opaque data.
+ * Quit and return the first non-zero value returned from the callback.
+ *
+ * Arguments:
+ * pi -- procinfo struct for the process to be mapped.
+ * func -- callback function to be called by this iterator.
+ * data -- optional opaque data to be passed to the callback function.
+ * child_func -- optional secondary function pointer to be passed
+ * to the child function.
+ *
+ * Return: First non-zero return value from the callback function,
+ * or zero.
+ */
+
+static int
+iterate_over_mappings (procinfo *pi, int (*child_func) (), void *data,
+ int (*func) (struct prmap *map,
+ int (*child_func) (),
+ void *data))
+{
+ char pathname[MAX_PROC_NAME_SIZE];
+ struct prmap *prmaps;
+ struct prmap *prmap;
+ int funcstat;
+ int map_fd;
+ int nmap;
+#ifdef NEW_PROC_API
+ struct stat sbuf;
+#endif
+
+ /* Get the number of mappings, allocate space,
+ and read the mappings into prmaps. */
+#ifdef NEW_PROC_API
+ /* Open map fd. */
+ sprintf (pathname, "/proc/%d/map", pi->pid);
+ if ((map_fd = open (pathname, O_RDONLY)) < 0)
+ proc_error (pi, "iterate_over_mappings (open)", __LINE__);
+
+ /* Make sure it gets closed again. */
+ make_cleanup_close (map_fd);
+
+ /* Use stat to determine the file size, and compute
+ the number of prmap_t objects it contains. */
+ if (fstat (map_fd, &sbuf) != 0)
+ proc_error (pi, "iterate_over_mappings (fstat)", __LINE__);
+
+ nmap = sbuf.st_size / sizeof (prmap_t);
+ prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps));
+ if (read (map_fd, (char *) prmaps, nmap * sizeof (*prmaps))
+ != (nmap * sizeof (*prmaps)))
+ proc_error (pi, "iterate_over_mappings (read)", __LINE__);
+#else
+ /* Use ioctl command PIOCNMAP to get number of mappings. */
+ if (ioctl (pi->ctl_fd, PIOCNMAP, &nmap) != 0)
+ proc_error (pi, "iterate_over_mappings (PIOCNMAP)", __LINE__);
+
+ prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps));
+ if (ioctl (pi->ctl_fd, PIOCMAP, prmaps) != 0)
+ proc_error (pi, "iterate_over_mappings (PIOCMAP)", __LINE__);
+#endif
+
+ for (prmap = prmaps; nmap > 0; prmap++, nmap--)
+ if ((funcstat = (*func) (prmap, child_func, data)) != 0)
+ return funcstat;
+
+ return 0;
+}
+
+/*
+ * Function: solib_mappings_callback
+ *
+ * Calls the supplied callback function once for each mapped address
+ * space in the process. The callback function receives an open
+ * file descriptor for the file corresponding to that mapped
+ * address space (if there is one), and the base address of the
+ * mapped space. Quit when the callback function returns a
+ * nonzero value, or at teh end of the mappings.
+ *
+ * Returns: the first non-zero return value of the callback function,
+ * or zero.
+ */
+
+int solib_mappings_callback (struct prmap *map,
+ int (*func) (int, CORE_ADDR),
+ void *data)
+{
+ procinfo *pi = data;
+ int fd;
+
+#ifdef NEW_PROC_API
+ char name[MAX_PROC_NAME_SIZE + sizeof (map->pr_mapname)];
+
+ if (map->pr_vaddr == 0 && map->pr_size == 0)
+ return -1; /* sanity */
+
+ if (map->pr_mapname[0] == 0)
+ {
+ fd = -1; /* no map file */
+ }
+ else
+ {
+ sprintf (name, "/proc/%d/object/%s", pi->pid, map->pr_mapname);
+ /* Note: caller's responsibility to close this fd! */
+ fd = open_with_retry (name, O_RDONLY);
+ /* Note: we don't test the above call for failure;
+ we just pass the FD on as given. Sometimes there is
+ no file, so the open may return failure, but that's
+ not a problem. */
+ }
+#else
+ fd = ioctl (pi->ctl_fd, PIOCOPENM, &map->pr_vaddr);
+ /* Note: we don't test the above call for failure;
+ we just pass the FD on as given. Sometimes there is
+ no file, so the ioctl may return failure, but that's
+ not a problem. */
+#endif
+ return (*func) (fd, (CORE_ADDR) map->pr_vaddr);
+}
+
+/*
+ * Function: proc_iterate_over_mappings
+ *
+ * Uses the unified "iterate_over_mappings" function
+ * to implement the exported interface to solib-svr4.c.
+ *
+ * Given a pointer to a function, call that function once for every
+ * mapped address space in the process. The callback function
+ * receives an open file descriptor for the file corresponding to
+ * that mapped address space (if there is one), and the base address
+ * of the mapped space. Quit when the callback function returns a
+ * nonzero value, or at teh end of the mappings.
+ *
+ * Returns: the first non-zero return value of the callback function,
+ * or zero.
+ */
+
+int
+proc_iterate_over_mappings (int (*func) (int, CORE_ADDR))
+{
+ procinfo *pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
+
+ return iterate_over_mappings (pi, func, pi, solib_mappings_callback);
+}
+
+/*
+ * Function: find_memory_regions_callback
+ *
+ * Implements the to_find_memory_regions method.
+ * Calls an external function for each memory region.
+ * External function will have the signiture:
+ *
+ * int callback (CORE_ADDR vaddr,
+ * unsigned long size,
+ * int read, int write, int execute,
+ * void *data);
+ *
+ * Returns the integer value returned by the callback.
+ */
+
+static int
+find_memory_regions_callback (struct prmap *map,
+ int (*func) (CORE_ADDR,
+ unsigned long,
+ int, int, int,
+ void *),
+ void *data)
+{
+ return (*func) ((CORE_ADDR) map->pr_vaddr,
+ map->pr_size,
+ (map->pr_mflags & MA_READ) != 0,
+ (map->pr_mflags & MA_WRITE) != 0,
+ (map->pr_mflags & MA_EXEC) != 0,
+ data);
+}
+
+/*
+ * Function: proc_find_memory_regions
+ *
+ * External interface. Calls a callback function once for each
+ * mapped memory region in the child process, passing as arguments
+ * CORE_ADDR virtual_address,
+ * unsigned long size,
+ * int read, TRUE if region is readable by the child
+ * int write, TRUE if region is writable by the child
+ * int execute TRUE if region is executable by the child.
+ *
+ * Stops iterating and returns the first non-zero value
+ * returned by the callback.
+ */
+
+static int
+proc_find_memory_regions (int (*func) (CORE_ADDR,
+ unsigned long,
+ int, int, int,
+ void *),
+ void *data)
+{
+ procinfo *pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
+
+ return iterate_over_mappings (pi, func, data,
+ find_memory_regions_callback);
+}
+
+/*
+ * Function: mappingflags
+ *
+ * Returns an ascii representation of a memory mapping's flags.
+ */
+
+static char *
+mappingflags (long flags)
+{
+ static char asciiflags[8];
+
+ strcpy (asciiflags, "-------");
+#if defined (MA_PHYS)
+ if (flags & MA_PHYS)
+ asciiflags[0] = 'd';
+#endif
+ if (flags & MA_STACK)
+ asciiflags[1] = 's';
+ if (flags & MA_BREAK)
+ asciiflags[2] = 'b';
+ if (flags & MA_SHARED)
+ asciiflags[3] = 's';
+ if (flags & MA_READ)
+ asciiflags[4] = 'r';
+ if (flags & MA_WRITE)
+ asciiflags[5] = 'w';
+ if (flags & MA_EXEC)
+ asciiflags[6] = 'x';
+ return (asciiflags);
+}
+
+/*
+ * Function: info_mappings_callback
+ *
+ * Callback function, does the actual work for 'info proc mappings'.
+ */
+
+/* ARGSUSED */
+static int
+info_mappings_callback (struct prmap *map, int (*ignore) (), void *unused)
+{
+ char *data_fmt_string;
+
+ if (TARGET_ADDR_BIT == 32)
+ data_fmt_string = "\t%#10lx %#10lx %#10x %#10x %7s\n";
+ else
+ data_fmt_string = " %#18lx %#18lx %#10x %#10x %7s\n";
+
+ printf_filtered (data_fmt_string,
+ (unsigned long) map->pr_vaddr,
+ (unsigned long) map->pr_vaddr + map->pr_size - 1,
+ map->pr_size,
+#ifdef PCAGENT /* Horrible hack: only defined on Solaris 2.6+ */
+ (unsigned int) map->pr_offset,
+#else
+ map->pr_off,
+#endif
+ mappingflags (map->pr_mflags));
+
+ return 0;
+}
+
+/*
+ * Function: info_proc_mappings
+ *
+ * Implement the "info proc mappings" subcommand.
+ */
+
+static void
+info_proc_mappings (procinfo *pi, int summary)
+{
+ char *header_fmt_string;
+
+ if (TARGET_PTR_BIT == 32)
+ header_fmt_string = "\t%10s %10s %10s %10s %7s\n";
+ else
+ header_fmt_string = " %18s %18s %10s %10s %7s\n";
+
+ if (summary)
+ return; /* No output for summary mode. */
+
+ printf_filtered ("Mapped address spaces:\n\n");
+ printf_filtered (header_fmt_string,
+ "Start Addr",
+ " End Addr",
+ " Size",
+ " Offset",
+ "Flags");
+
+ iterate_over_mappings (pi, NULL, NULL, info_mappings_callback);
+ printf_filtered ("\n");
+}
+
+/*
+ * Function: info_proc_cmd
+ *
+ * Implement the "info proc" command.
+ */
+
+static void
+info_proc_cmd (char *args, int from_tty)
+{
+ struct cleanup *old_chain;
+ procinfo *process = NULL;
+ procinfo *thread = NULL;
+ char **argv = NULL;
+ char *tmp = NULL;
+ int pid = 0;
+ int tid = 0;
+ int mappings = 0;
+
+ old_chain = make_cleanup (null_cleanup, 0);
+ if (args)
+ {
+ if ((argv = buildargv (args)) == NULL)
+ nomem (0);
+ else
+ make_cleanup_freeargv (argv);
+ }
+ while (argv != NULL && *argv != NULL)
+ {
+ if (isdigit (argv[0][0]))
+ {
+ pid = strtoul (argv[0], &tmp, 10);
+ if (*tmp == '/')
+ tid = strtoul (++tmp, NULL, 10);
+ }
+ else if (argv[0][0] == '/')
+ {
+ tid = strtoul (argv[0] + 1, NULL, 10);
+ }
+ else if (strncmp (argv[0], "mappings", strlen (argv[0])) == 0)
+ {
+ mappings = 1;
+ }
+ else
+ {
+ /* [...] */
+ }
+ argv++;
+ }
+ if (pid == 0)
+ pid = PIDGET (inferior_ptid);
+ if (pid == 0)
+ error ("No current process: you must name one.");
+ else
+ {
+ /* Have pid, will travel.
+ First see if it's a process we're already debugging. */
+ process = find_procinfo (pid, 0);
+ if (process == NULL)
+ {
+ /* No. So open a procinfo for it, but
+ remember to close it again when finished. */
+ process = create_procinfo (pid, 0);
+ make_cleanup (do_destroy_procinfo_cleanup, process);
+ if (!open_procinfo_files (process, FD_CTL))
+ proc_error (process, "info proc, open_procinfo_files", __LINE__);
+ }
+ }
+ if (tid != 0)
+ thread = create_procinfo (pid, tid);
+
+ if (process)
+ {
+ printf_filtered ("process %d flags:\n", process->pid);
+ proc_prettyprint_flags (proc_flags (process), 1);
+ if (proc_flags (process) & (PR_STOPPED | PR_ISTOP))
+ proc_prettyprint_why (proc_why (process), proc_what (process), 1);
+ if (proc_get_nthreads (process) > 1)
+ printf_filtered ("Process has %d threads.\n",
+ proc_get_nthreads (process));
+ }
+ if (thread)
+ {
+ printf_filtered ("thread %d flags:\n", thread->tid);
+ proc_prettyprint_flags (proc_flags (thread), 1);
+ if (proc_flags (thread) & (PR_STOPPED | PR_ISTOP))
+ proc_prettyprint_why (proc_why (thread), proc_what (thread), 1);
+ }
+
+ if (mappings)
+ {
+ info_proc_mappings (process, 0);
+ }
+
+ do_cleanups (old_chain);
+}
+
+static void
+proc_trace_syscalls (char *args, int from_tty, int entry_or_exit, int mode)
+{
+ procinfo *pi;
+ sysset_t *sysset;
+ int syscallnum = 0;
+
+ if (PIDGET (inferior_ptid) <= 0)
+ error ("you must be debugging a process to use this command.");
+
+ if (args == NULL || args[0] == 0)
+ error_no_arg ("system call to trace");
+
+ pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
+ if (isdigit (args[0]))
+ {
+ syscallnum = atoi (args);
+ if (entry_or_exit == PR_SYSENTRY)
+ sysset = proc_get_traced_sysentry (pi, NULL);
+ else
+ sysset = proc_get_traced_sysexit (pi, NULL);
+
+ if (sysset == NULL)
+ proc_error (pi, "proc-trace, get_traced_sysset", __LINE__);
+
+ if (mode == FLAG_SET)
+ gdb_praddsysset (sysset, syscallnum);
+ else
+ gdb_prdelsysset (sysset, syscallnum);
+
+ if (entry_or_exit == PR_SYSENTRY)
+ {
+ if (!proc_set_traced_sysentry (pi, sysset))
+ proc_error (pi, "proc-trace, set_traced_sysentry", __LINE__);
+ }
+ else
+ {
+ if (!proc_set_traced_sysexit (pi, sysset))
+ proc_error (pi, "proc-trace, set_traced_sysexit", __LINE__);
+ }
+ }
+}
+
+static void
+proc_trace_sysentry_cmd (char *args, int from_tty)
+{
+ proc_trace_syscalls (args, from_tty, PR_SYSENTRY, FLAG_SET);
+}
+
+static void
+proc_trace_sysexit_cmd (char *args, int from_tty)
+{
+ proc_trace_syscalls (args, from_tty, PR_SYSEXIT, FLAG_SET);
+}
+
+static void
+proc_untrace_sysentry_cmd (char *args, int from_tty)
+{
+ proc_trace_syscalls (args, from_tty, PR_SYSENTRY, FLAG_RESET);
+}
+
+static void
+proc_untrace_sysexit_cmd (char *args, int from_tty)
+{
+ proc_trace_syscalls (args, from_tty, PR_SYSEXIT, FLAG_RESET);
+}
+
+
+void
+_initialize_procfs (void)
+{
+ init_procfs_ops ();
+ add_target (&procfs_ops);
+ add_info ("proc", info_proc_cmd,
+ "Show /proc process information about any running process.\n\
+Specify process id, or use the program being debugged by default.\n\
+Specify keyword 'mappings' for detailed info on memory mappings.");
+ add_com ("proc-trace-entry", no_class, proc_trace_sysentry_cmd,
+ "Give a trace of entries into the syscall.");
+ add_com ("proc-trace-exit", no_class, proc_trace_sysexit_cmd,
+ "Give a trace of exits from the syscall.");
+ add_com ("proc-untrace-entry", no_class, proc_untrace_sysentry_cmd,
+ "Cancel a trace of entries into the syscall.");
+ add_com ("proc-untrace-exit", no_class, proc_untrace_sysexit_cmd,
+ "Cancel a trace of exits from the syscall.");
+}
+
+/* =================== END, GDB "MODULE" =================== */
+
+
+
+/* miscellaneous stubs: */
+/* The following satisfy a few random symbols mostly created by */
+/* the solaris threads implementation, which I will chase down */
+/* later. */
+
+/*
+ * Return a pid for which we guarantee
+ * we will be able to find a 'live' procinfo.
+ */
+
+ptid_t
+procfs_first_available (void)
+{
+ return pid_to_ptid (procinfo_list ? procinfo_list->pid : -1);
+}
+
+/* =================== GCORE .NOTE "MODULE" =================== */
+#if defined (UNIXWARE) || defined (PIOCOPENLWP) || defined (PCAGENT)
+/* gcore only implemented on solaris and unixware (so far) */
+
+static char *
+procfs_do_thread_registers (bfd *obfd, ptid_t ptid,
+ char *note_data, int *note_size)
+{
+ gdb_gregset_t gregs;
+ gdb_fpregset_t fpregs;
+ unsigned long merged_pid;
+
+ merged_pid = TIDGET (ptid) << 16 | PIDGET (ptid);
+
+ fill_gregset (&gregs, -1);
+#if defined (UNIXWARE)
+ note_data = (char *) elfcore_write_lwpstatus (obfd,
+ note_data,
+ note_size,
+ merged_pid,
+ stop_signal,
+ &gregs);
+#else
+ note_data = (char *) elfcore_write_prstatus (obfd,
+ note_data,
+ note_size,
+ merged_pid,
+ stop_signal,
+ &gregs);
+#endif
+ fill_fpregset (&fpregs, -1);
+ note_data = (char *) elfcore_write_prfpreg (obfd,
+ note_data,
+ note_size,
+ &fpregs,
+ sizeof (fpregs));
+ return note_data;
+}
+
+struct procfs_corefile_thread_data {
+ bfd *obfd;
+ char *note_data;
+ int *note_size;
+};
+
+static int
+procfs_corefile_thread_callback (procinfo *pi, procinfo *thread, void *data)
+{
+ struct procfs_corefile_thread_data *args = data;
+
+ if (pi != NULL && thread->tid != 0)
+ {
+ ptid_t saved_ptid = inferior_ptid;
+ inferior_ptid = MERGEPID (pi->pid, thread->tid);
+ args->note_data = procfs_do_thread_registers (args->obfd, inferior_ptid,
+ args->note_data,
+ args->note_size);
+ inferior_ptid = saved_ptid;
+ }
+ return 0;
+}
+
+static char *
+procfs_make_note_section (bfd *obfd, int *note_size)
+{
+ struct cleanup *old_chain;
+ gdb_gregset_t gregs;
+ gdb_fpregset_t fpregs;
+ char fname[16] = {'\0'};
+ char psargs[80] = {'\0'};
+ procinfo *pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
+ char *note_data = NULL;
+ char *inf_args;
+ struct procfs_corefile_thread_data thread_args;
+
+ if (get_exec_file (0))
+ {
+ strncpy (fname, strrchr (get_exec_file (0), '/') + 1, sizeof (fname));
+ strncpy (psargs, get_exec_file (0),
+ sizeof (psargs));
+
+ inf_args = get_inferior_args ();
+ if (inf_args && *inf_args &&
+ strlen (inf_args) < ((int) sizeof (psargs) - (int) strlen (psargs)))
+ {
+ strncat (psargs, " ",
+ sizeof (psargs) - strlen (psargs));
+ strncat (psargs, inf_args,
+ sizeof (psargs) - strlen (psargs));
+ }
+ }
+
+ note_data = (char *) elfcore_write_prpsinfo (obfd,
+ note_data,
+ note_size,
+ fname,
+ psargs);
+
+#ifdef UNIXWARE
+ fill_gregset (&gregs, -1);
+ note_data = elfcore_write_pstatus (obfd, note_data, note_size,
+ PIDGET (inferior_ptid),
+ stop_signal, &gregs);
+#endif
+
+ thread_args.obfd = obfd;
+ thread_args.note_data = note_data;
+ thread_args.note_size = note_size;
+ proc_iterate_over_threads (pi, procfs_corefile_thread_callback, &thread_args);
+
+ if (thread_args.note_data == note_data)
+ {
+ /* iterate_over_threads didn't come up with any threads;
+ just use inferior_ptid. */
+ note_data = procfs_do_thread_registers (obfd, inferior_ptid,
+ note_data, note_size);
+ }
+ else
+ {
+ note_data = thread_args.note_data;
+ }
+
+ make_cleanup (xfree, note_data);
+ return note_data;
+}
+#else /* !(Solaris or Unixware) */
+static char *
+procfs_make_note_section (bfd *obfd, int *note_size)
+{
+ error ("gcore not implemented for this host.");
+ return NULL; /* lint */
+}
+#endif /* Solaris or Unixware */
+/* =================== END GCORE .NOTE "MODULE" =================== */