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authornobody <>2002-09-07 00:00:05 +0000
committernobody <>2002-09-07 00:00:05 +0000
commitc1aa2a27e755c883b5c49b223120dfb712ea4e28 (patch)
treea98633075cd1f2b034b49446e83e522708d11f68 /gdb/gdbserver/linux-low.c
parent2e3c0e2427295c9cc09a8a707dfba38d50e2ba30 (diff)
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This commit was manufactured by cvs2svn to create branchsid-20020905-branchpointsid-20020905-branch
'sid-20020905-branch'. Sprout 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'.' Cherrypick from master 2002-09-07 00:00:04 UTC Alan Modra <amodra@gmail.com> 'daily update': bfd/ChangeLog bfd/config.bfd bfd/version.h include/ChangeLog include/dis-asm.h libiberty/ChangeLog libiberty/regex.c opcodes/ChangeLog opcodes/disassemble.c opcodes/ppc-dis.c opcodes/ppc-opc.c Delete: djunpack.bat gdb/CONTRIBUTE gdb/COPYING gdb/ChangeLog gdb/ChangeLog-1990 gdb/ChangeLog-1991 gdb/ChangeLog-1992 gdb/ChangeLog-1993 gdb/ChangeLog-1994 gdb/ChangeLog-1995 gdb/ChangeLog-1996 gdb/ChangeLog-1997 gdb/ChangeLog-1998 gdb/ChangeLog-1999 gdb/ChangeLog-2000 gdb/ChangeLog-2001 gdb/ChangeLog-3.x gdb/MAINTAINERS gdb/Makefile.in gdb/NEWS gdb/PROBLEMS gdb/README gdb/TODO gdb/a68v-nat.c gdb/abug-rom.c gdb/acconfig.h gdb/acinclude.m4 gdb/aclocal.m4 gdb/ada-exp.y gdb/ada-lang.c gdb/ada-lang.h gdb/ada-lex.l gdb/ada-tasks.c gdb/ada-typeprint.c gdb/ada-valprint.c gdb/aix-thread.c gdb/alpha-linux-tdep.c gdb/alpha-nat.c gdb/alpha-osf1-tdep.c gdb/alpha-tdep.c gdb/alpha-tdep.h gdb/alphabsd-nat.c gdb/alphabsd-tdep.c gdb/alphabsd-tdep.h gdb/alphafbsd-tdep.c gdb/alphanbsd-tdep.c gdb/annotate.c gdb/annotate.h gdb/arc-tdep.c gdb/arch-utils.c gdb/arch-utils.h gdb/arm-linux-nat.c gdb/arm-linux-tdep.c gdb/arm-tdep.c gdb/arm-tdep.h gdb/armnbsd-nat.c gdb/armnbsd-tdep.c gdb/avr-tdep.c gdb/ax-gdb.c gdb/ax-gdb.h gdb/ax-general.c gdb/ax.h gdb/bcache.c gdb/bcache.h gdb/blockframe.c gdb/breakpoint.c gdb/breakpoint.h gdb/buildsym.c gdb/buildsym.h gdb/builtin-regs.c gdb/builtin-regs.h gdb/c-exp.y gdb/c-lang.c gdb/c-lang.h gdb/c-typeprint.c gdb/c-valprint.c gdb/call-cmds.h gdb/ch-exp.c gdb/ch-lang.c gdb/ch-lang.h gdb/ch-typeprint.c gdb/ch-valprint.c gdb/cli-out.c gdb/cli-out.h gdb/cli/cli-cmds.c gdb/cli/cli-cmds.h gdb/cli/cli-decode.c gdb/cli/cli-decode.h gdb/cli/cli-dump.c gdb/cli/cli-dump.h gdb/cli/cli-script.c gdb/cli/cli-script.h gdb/cli/cli-setshow.c gdb/cli/cli-setshow.h gdb/cli/cli-utils.c gdb/cli/cli-utils.h gdb/coff-solib.c gdb/coff-solib.h gdb/coffread.c gdb/command.h gdb/complaints.c gdb/complaints.h gdb/completer.c gdb/completer.h gdb/config.in gdb/config/alpha/alpha-linux.mh gdb/config/alpha/alpha-linux.mt gdb/config/alpha/alpha-osf1.mh gdb/config/alpha/alpha-osf1.mt gdb/config/alpha/alpha-osf2.mh gdb/config/alpha/alpha-osf3.mh gdb/config/alpha/alpha.mt gdb/config/alpha/fbsd.mh gdb/config/alpha/fbsd.mt gdb/config/alpha/nbsd.mh gdb/config/alpha/nbsd.mt gdb/config/alpha/nm-fbsd.h gdb/config/alpha/nm-linux.h gdb/config/alpha/nm-nbsd.h gdb/config/alpha/nm-osf.h gdb/config/alpha/nm-osf2.h gdb/config/alpha/nm-osf3.h gdb/config/alpha/tm-alpha.h gdb/config/alpha/tm-alphalinux.h gdb/config/alpha/tm-fbsd.h gdb/config/alpha/tm-nbsd.h gdb/config/alpha/xm-alphalinux.h gdb/config/alpha/xm-alphaosf.h gdb/config/arc/arc.mt gdb/config/arc/tm-arc.h gdb/config/arm/embed.mt gdb/config/arm/linux.mh gdb/config/arm/linux.mt gdb/config/arm/nbsd.mt gdb/config/arm/nbsdaout.mh gdb/config/arm/nbsdelf.mh gdb/config/arm/nm-linux.h gdb/config/arm/nm-nbsd.h gdb/config/arm/nm-nbsdaout.h gdb/config/arm/tm-arm.h gdb/config/arm/tm-embed.h gdb/config/arm/tm-linux.h gdb/config/arm/tm-wince.h gdb/config/arm/wince.mt gdb/config/arm/xm-linux.h gdb/config/arm/xm-nbsd.h gdb/config/avr/avr.mt gdb/config/cris/cris.mt gdb/config/cris/tm-cris.h gdb/config/d10v/d10v.mt gdb/config/d30v/d30v.mt gdb/config/d30v/tm-d30v.h gdb/config/djgpp/README gdb/config/djgpp/config.sed gdb/config/djgpp/djcheck.sh gdb/config/djgpp/djconfig.sh gdb/config/djgpp/fnchange.lst gdb/config/fr30/fr30.mt gdb/config/fr30/tm-fr30.h gdb/config/frv/frv.mt gdb/config/frv/tm-frv.h gdb/config/h8300/h8300.mt gdb/config/h8300/tm-h8300.h gdb/config/h8500/h8500.mt gdb/config/h8500/tm-h8500.h gdb/config/i386/cygwin.mh gdb/config/i386/cygwin.mt gdb/config/i386/embed.mt gdb/config/i386/fbsd.mh gdb/config/i386/fbsd.mt gdb/config/i386/gdbserve.mt gdb/config/i386/go32.mh gdb/config/i386/go32.mt gdb/config/i386/i386aix.mh gdb/config/i386/i386aix.mt gdb/config/i386/i386aout.mt gdb/config/i386/i386bsd.mh gdb/config/i386/i386bsd.mt gdb/config/i386/i386dgux.mh gdb/config/i386/i386gnu.mh gdb/config/i386/i386gnu.mt gdb/config/i386/i386lynx.mh gdb/config/i386/i386lynx.mt gdb/config/i386/i386m3.mh gdb/config/i386/i386m3.mt gdb/config/i386/i386mach.mh gdb/config/i386/i386mk.mh gdb/config/i386/i386mk.mt gdb/config/i386/i386nw.mt gdb/config/i386/i386os9k.mt gdb/config/i386/i386sco.mh gdb/config/i386/i386sco4.mh gdb/config/i386/i386sco5.mh gdb/config/i386/i386sco5.mt gdb/config/i386/i386sol2.mh gdb/config/i386/i386sol2.mt gdb/config/i386/i386v.mh gdb/config/i386/i386v.mt gdb/config/i386/i386v32.mh gdb/config/i386/i386v4.mh gdb/config/i386/i386v4.mt gdb/config/i386/i386v42mp.mh gdb/config/i386/i386v42mp.mt gdb/config/i386/linux.mh gdb/config/i386/linux.mt gdb/config/i386/nbsd.mt gdb/config/i386/nbsdaout.mh gdb/config/i386/nbsdelf.mh gdb/config/i386/ncr3000.mh gdb/config/i386/ncr3000.mt gdb/config/i386/nm-cygwin.h gdb/config/i386/nm-fbsd.h gdb/config/i386/nm-go32.h gdb/config/i386/nm-i386.h gdb/config/i386/nm-i386aix.h gdb/config/i386/nm-i386bsd.h gdb/config/i386/nm-i386gnu.h gdb/config/i386/nm-i386lynx.h gdb/config/i386/nm-i386mach.h gdb/config/i386/nm-i386sco.h gdb/config/i386/nm-i386sco4.h gdb/config/i386/nm-i386sco5.h gdb/config/i386/nm-i386sol2.h gdb/config/i386/nm-i386v.h gdb/config/i386/nm-i386v4.h gdb/config/i386/nm-i386v42mp.h gdb/config/i386/nm-linux.h gdb/config/i386/nm-m3.h gdb/config/i386/nm-nbsd.h gdb/config/i386/nm-nbsdaout.h gdb/config/i386/nm-obsd.h gdb/config/i386/nm-ptx4.h gdb/config/i386/nm-symmetry.h gdb/config/i386/nm-x86-64linux.h gdb/config/i386/obsd.mh gdb/config/i386/ptx.mh gdb/config/i386/ptx.mt gdb/config/i386/ptx4.mh gdb/config/i386/ptx4.mt gdb/config/i386/symmetry.mh gdb/config/i386/symmetry.mt gdb/config/i386/tm-cygwin.h gdb/config/i386/tm-fbsd.h gdb/config/i386/tm-go32.h gdb/config/i386/tm-i386.h gdb/config/i386/tm-i386aix.h gdb/config/i386/tm-i386bsd.h gdb/config/i386/tm-i386lynx.h gdb/config/i386/tm-i386m3.h gdb/config/i386/tm-i386mk.h gdb/config/i386/tm-i386os9k.h gdb/config/i386/tm-i386sol2.h gdb/config/i386/tm-i386v4.h gdb/config/i386/tm-i386v42mp.h gdb/config/i386/tm-linux.h gdb/config/i386/tm-nbsd.h gdb/config/i386/tm-ptx.h gdb/config/i386/tm-ptx4.h gdb/config/i386/tm-symmetry.h gdb/config/i386/tm-vxworks.h gdb/config/i386/tm-x86-64linux.h gdb/config/i386/vxworks.mt gdb/config/i386/x86-64linux.mh gdb/config/i386/x86-64linux.mt gdb/config/i386/xm-cygwin.h gdb/config/i386/xm-go32.h gdb/config/i386/xm-i386.h gdb/config/i386/xm-i386aix.h gdb/config/i386/xm-i386bsd.h gdb/config/i386/xm-i386m3.h gdb/config/i386/xm-i386mach.h gdb/config/i386/xm-i386mk.h gdb/config/i386/xm-i386sco.h gdb/config/i386/xm-i386v.h gdb/config/i386/xm-i386v32.h gdb/config/i386/xm-i386v4.h gdb/config/i386/xm-nbsd.h gdb/config/i386/xm-ptx.h gdb/config/i386/xm-ptx4.h gdb/config/i386/xm-symmetry.h gdb/config/i960/mon960.mt gdb/config/i960/nindy960.mt gdb/config/i960/tm-i960.h gdb/config/i960/tm-mon960.h gdb/config/i960/tm-nindy960.h gdb/config/i960/tm-vx960.h gdb/config/i960/vxworks960.mt gdb/config/ia64/aix.mh gdb/config/ia64/aix.mt gdb/config/ia64/ia64.mt gdb/config/ia64/linux.mh gdb/config/ia64/linux.mt gdb/config/ia64/nm-aix.h gdb/config/ia64/nm-linux.h gdb/config/ia64/tm-aix.h gdb/config/ia64/tm-ia64.h gdb/config/ia64/tm-linux.h gdb/config/ia64/xm-aix.h gdb/config/ia64/xm-linux.h gdb/config/m32r/m32r.mt gdb/config/m32r/tm-m32r.h gdb/config/m68hc11/m68hc11.mt gdb/config/m68k/3b1.mh gdb/config/m68k/3b1.mt gdb/config/m68k/apollo68b.mh gdb/config/m68k/apollo68b.mt gdb/config/m68k/apollo68v.mh gdb/config/m68k/cisco.mt gdb/config/m68k/delta68.mh gdb/config/m68k/delta68.mt gdb/config/m68k/dpx2.mh gdb/config/m68k/dpx2.mt gdb/config/m68k/es1800.mt gdb/config/m68k/hp300bsd.mh gdb/config/m68k/hp300bsd.mt gdb/config/m68k/hp300hpux.mh gdb/config/m68k/hp300hpux.mt gdb/config/m68k/linux.mh gdb/config/m68k/linux.mt gdb/config/m68k/m68klynx.mh gdb/config/m68k/m68klynx.mt gdb/config/m68k/m68kv4.mh gdb/config/m68k/m68kv4.mt gdb/config/m68k/monitor.mt gdb/config/m68k/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-irix6.h gdb/config/mips/tm-linux.h gdb/config/mips/tm-mips.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 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readline/config.h.bot readline/config.h.in readline/configure readline/configure.in readline/cross-build/cygwin.cache readline/display.c readline/doc/ChangeLog.gdb readline/doc/Makefile.in readline/doc/hist.texinfo readline/doc/hstech.texinfo readline/doc/hsuser.texinfo readline/doc/inc-hist.texinfo readline/doc/manvers.texinfo readline/doc/readline.3 readline/doc/rlman.texinfo readline/doc/rltech.texinfo readline/doc/rluser.texinfo readline/doc/rluserman.texinfo readline/doc/texi2dvi readline/doc/texi2html readline/emacs_keymap.c readline/examples/ChangeLog.gdb readline/examples/Inputrc readline/examples/Makefile.in readline/examples/excallback.c readline/examples/fileman.c readline/examples/histexamp.c readline/examples/manexamp.c readline/examples/rl.c readline/examples/rlfe.c readline/examples/rltest.c readline/examples/rlversion.c readline/funmap.c readline/histexpand.c readline/histfile.c readline/histlib.h readline/history.c readline/history.h readline/histsearch.c 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sim/testsuite/sim/m32r/ldh-d.cgs sim/testsuite/sim/m32r/ldh.cgs sim/testsuite/sim/m32r/ldi16.cgs sim/testsuite/sim/m32r/ldi8.cgs sim/testsuite/sim/m32r/ldub-d.cgs sim/testsuite/sim/m32r/ldub.cgs sim/testsuite/sim/m32r/lduh-d.cgs sim/testsuite/sim/m32r/lduh.cgs sim/testsuite/sim/m32r/lock.cgs sim/testsuite/sim/m32r/machi.cgs sim/testsuite/sim/m32r/maclo.cgs sim/testsuite/sim/m32r/macwhi.cgs sim/testsuite/sim/m32r/macwlo.cgs sim/testsuite/sim/m32r/misc.exp sim/testsuite/sim/m32r/mul.cgs sim/testsuite/sim/m32r/mulhi.cgs sim/testsuite/sim/m32r/mullo.cgs sim/testsuite/sim/m32r/mulwhi.cgs sim/testsuite/sim/m32r/mulwlo.cgs sim/testsuite/sim/m32r/mv.cgs sim/testsuite/sim/m32r/mvfachi.cgs sim/testsuite/sim/m32r/mvfaclo.cgs sim/testsuite/sim/m32r/mvfacmi.cgs sim/testsuite/sim/m32r/mvfc.cgs sim/testsuite/sim/m32r/mvtachi.cgs sim/testsuite/sim/m32r/mvtaclo.cgs sim/testsuite/sim/m32r/mvtc.cgs sim/testsuite/sim/m32r/neg.cgs sim/testsuite/sim/m32r/nop.cgs sim/testsuite/sim/m32r/not.cgs sim/testsuite/sim/m32r/or.cgs sim/testsuite/sim/m32r/or3.cgs sim/testsuite/sim/m32r/rac.cgs sim/testsuite/sim/m32r/rach.cgs sim/testsuite/sim/m32r/rem.cgs sim/testsuite/sim/m32r/remu.cgs sim/testsuite/sim/m32r/rte.cgs sim/testsuite/sim/m32r/seth.cgs sim/testsuite/sim/m32r/sll.cgs sim/testsuite/sim/m32r/sll3.cgs sim/testsuite/sim/m32r/slli.cgs sim/testsuite/sim/m32r/sra.cgs sim/testsuite/sim/m32r/sra3.cgs sim/testsuite/sim/m32r/srai.cgs sim/testsuite/sim/m32r/srl.cgs sim/testsuite/sim/m32r/srl3.cgs sim/testsuite/sim/m32r/srli.cgs sim/testsuite/sim/m32r/st-d.cgs sim/testsuite/sim/m32r/st-minus.cgs sim/testsuite/sim/m32r/st-plus.cgs sim/testsuite/sim/m32r/st.cgs sim/testsuite/sim/m32r/stb-d.cgs sim/testsuite/sim/m32r/stb.cgs sim/testsuite/sim/m32r/sth-d.cgs sim/testsuite/sim/m32r/sth.cgs sim/testsuite/sim/m32r/sub.cgs sim/testsuite/sim/m32r/subv.cgs sim/testsuite/sim/m32r/subx.cgs sim/testsuite/sim/m32r/testutils.inc sim/testsuite/sim/m32r/trap.cgs sim/testsuite/sim/m32r/unlock.cgs sim/testsuite/sim/m32r/uread16.ms sim/testsuite/sim/m32r/uread32.ms sim/testsuite/sim/m32r/uwrite16.ms sim/testsuite/sim/m32r/uwrite32.ms sim/testsuite/sim/m32r/xor.cgs sim/testsuite/sim/m32r/xor3.cgs sim/v850/ChangeLog sim/v850/Makefile.in sim/v850/acconfig.h sim/v850/config.in sim/v850/configure sim/v850/configure.in sim/v850/interp.c sim/v850/sim-main.h sim/v850/simops.c sim/v850/simops.h sim/v850/v850-dc sim/v850/v850.igen sim/v850/v850_sim.h sim/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 texinfo/texinfo.tex
Diffstat (limited to 'gdb/gdbserver/linux-low.c')
-rw-r--r--gdb/gdbserver/linux-low.c1265
1 files changed, 0 insertions, 1265 deletions
diff --git a/gdb/gdbserver/linux-low.c b/gdb/gdbserver/linux-low.c
deleted file mode 100644
index 7644f9e..0000000
--- a/gdb/gdbserver/linux-low.c
+++ /dev/null
@@ -1,1265 +0,0 @@
-/* Low level interface to ptrace, for the remote server for GDB.
- Copyright 1995, 1996, 1998, 1999, 2000, 2001, 2002
- Free Software Foundation, Inc.
-
- 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 "server.h"
-#include "linux-low.h"
-
-#include <sys/wait.h>
-#include <stdio.h>
-#include <sys/param.h>
-#include <sys/dir.h>
-#include <sys/ptrace.h>
-#include <sys/user.h>
-#include <signal.h>
-#include <sys/ioctl.h>
-#include <fcntl.h>
-#include <string.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-/* ``all_threads'' is keyed by the LWP ID - it should be the thread ID instead,
- however. This requires changing the ID in place when we go from !using_threads
- to using_threads, immediately.
-
- ``all_processes'' is keyed by the process ID - which on Linux is (presently)
- the same as the LWP ID. */
-
-struct inferior_list all_processes;
-
-/* FIXME this is a bit of a hack, and could be removed. */
-int stopping_threads;
-
-/* FIXME make into a target method? */
-int using_threads;
-
-static void linux_resume_one_process (struct inferior_list_entry *entry,
- int step, int signal);
-static void linux_resume (int step, int signal);
-static void stop_all_processes (void);
-static int linux_wait_for_event (struct thread_info *child);
-
-struct pending_signals
-{
- int signal;
- struct pending_signals *prev;
-};
-
-#define PTRACE_ARG3_TYPE long
-#define PTRACE_XFER_TYPE long
-
-#ifdef HAVE_LINUX_REGSETS
-static int use_regsets_p = 1;
-#endif
-
-extern int errno;
-
-int debug_threads = 0;
-
-#define pid_of(proc) ((proc)->head.id)
-
-/* FIXME: Delete eventually. */
-#define inferior_pid (pid_of (get_thread_process (current_inferior)))
-
-/* This function should only be called if the process got a SIGTRAP.
- The SIGTRAP could mean several things.
-
- On i386, where decr_pc_after_break is non-zero:
- If we were single-stepping this process using PTRACE_SINGLESTEP,
- we will get only the one SIGTRAP (even if the instruction we
- stepped over was a breakpoint). The value of $eip will be the
- next instruction.
- If we continue the process using PTRACE_CONT, we will get a
- SIGTRAP when we hit a breakpoint. The value of $eip will be
- the instruction after the breakpoint (i.e. needs to be
- decremented). If we report the SIGTRAP to GDB, we must also
- report the undecremented PC. If we cancel the SIGTRAP, we
- must resume at the decremented PC.
-
- (Presumably, not yet tested) On a non-decr_pc_after_break machine
- with hardware or kernel single-step:
- If we single-step over a breakpoint instruction, our PC will
- point at the following instruction. If we continue and hit a
- breakpoint instruction, our PC will point at the breakpoint
- instruction. */
-
-static CORE_ADDR
-get_stop_pc (void)
-{
- CORE_ADDR stop_pc = (*the_low_target.get_pc) ();
-
- if (get_thread_process (current_inferior)->stepping)
- return stop_pc;
- else
- return stop_pc - the_low_target.decr_pc_after_break;
-}
-
-static void *
-add_process (int pid)
-{
- struct process_info *process;
-
- process = (struct process_info *) malloc (sizeof (*process));
- memset (process, 0, sizeof (*process));
-
- process->head.id = pid;
-
- /* Default to tid == lwpid == pid. */
- process->tid = pid;
- process->lwpid = pid;
-
- add_inferior_to_list (&all_processes, &process->head);
-
- return process;
-}
-
-/* Start an inferior process and returns its pid.
- ALLARGS is a vector of program-name and args. */
-
-static int
-linux_create_inferior (char *program, char **allargs)
-{
- void *new_process;
- int pid;
-
- pid = fork ();
- if (pid < 0)
- perror_with_name ("fork");
-
- if (pid == 0)
- {
- ptrace (PTRACE_TRACEME, 0, 0, 0);
-
- signal (SIGRTMIN + 1, SIG_DFL);
-
- setpgid (0, 0);
-
- execv (program, allargs);
-
- fprintf (stderr, "Cannot exec %s: %s.\n", program,
- strerror (errno));
- fflush (stderr);
- _exit (0177);
- }
-
- new_process = add_process (pid);
- add_thread (pid, new_process);
-
- return pid;
-}
-
-/* Attach to an inferior process. */
-
-void
-linux_attach_lwp (int pid, int tid)
-{
- struct process_info *new_process;
-
- if (ptrace (PTRACE_ATTACH, pid, 0, 0) != 0)
- {
- fprintf (stderr, "Cannot attach to process %d: %s (%d)\n", pid,
- errno < sys_nerr ? sys_errlist[errno] : "unknown error",
- errno);
- fflush (stderr);
-
- /* If we fail to attach to an LWP, just return. */
- if (!using_threads)
- _exit (0177);
- return;
- }
-
- new_process = (struct process_info *) add_process (pid);
- add_thread (tid, new_process);
-
- /* The next time we wait for this LWP we'll see a SIGSTOP as PTRACE_ATTACH
- brings it to a halt. We should ignore that SIGSTOP and resume the process
- (unless this is the first process, in which case the flag will be cleared
- in linux_attach).
-
- On the other hand, if we are currently trying to stop all threads, we
- should treat the new thread as if we had sent it a SIGSTOP. This works
- because we are guaranteed that add_process added us to the end of the
- list, and so the new thread has not yet reached wait_for_sigstop (but
- will). */
- if (! stopping_threads)
- new_process->stop_expected = 1;
-}
-
-int
-linux_attach (int pid)
-{
- struct process_info *process;
-
- linux_attach_lwp (pid, pid);
-
- /* Don't ignore the initial SIGSTOP if we just attached to this process. */
- process = (struct process_info *) find_inferior_id (&all_processes, pid);
- process->stop_expected = 0;
-
- return 0;
-}
-
-/* Kill the inferior process. Make us have no inferior. */
-
-static void
-linux_kill_one_process (struct inferior_list_entry *entry)
-{
- struct thread_info *thread = (struct thread_info *) entry;
- struct process_info *process = get_thread_process (thread);
- int wstat;
-
- do
- {
- ptrace (PTRACE_KILL, pid_of (process), 0, 0);
-
- /* Make sure it died. The loop is most likely unnecessary. */
- wstat = linux_wait_for_event (thread);
- } while (WIFSTOPPED (wstat));
-}
-
-/* Return nonzero if the given thread is still alive. */
-static void
-linux_kill (void)
-{
- for_each_inferior (&all_threads, linux_kill_one_process);
-}
-
-static int
-linux_thread_alive (int tid)
-{
- if (find_inferior_id (&all_threads, tid) != NULL)
- return 1;
- else
- return 0;
-}
-
-/* Return nonzero if this process stopped at a breakpoint which
- no longer appears to be inserted. Also adjust the PC
- appropriately to resume where the breakpoint used to be. */
-static int
-check_removed_breakpoint (struct process_info *event_child)
-{
- CORE_ADDR stop_pc;
- struct thread_info *saved_inferior;
-
- if (event_child->pending_is_breakpoint == 0)
- return 0;
-
- if (debug_threads)
- fprintf (stderr, "Checking for breakpoint.\n");
-
- saved_inferior = current_inferior;
- current_inferior = get_process_thread (event_child);
-
- stop_pc = get_stop_pc ();
-
- /* If the PC has changed since we stopped, then we shouldn't do
- anything. This happens if, for instance, GDB handled the
- decr_pc_after_break subtraction itself. */
- if (stop_pc != event_child->pending_stop_pc)
- {
- if (debug_threads)
- fprintf (stderr, "Ignoring, PC was changed.\n");
-
- event_child->pending_is_breakpoint = 0;
- current_inferior = saved_inferior;
- return 0;
- }
-
- /* If the breakpoint is still there, we will report hitting it. */
- if ((*the_low_target.breakpoint_at) (stop_pc))
- {
- if (debug_threads)
- fprintf (stderr, "Ignoring, breakpoint is still present.\n");
- current_inferior = saved_inferior;
- return 0;
- }
-
- if (debug_threads)
- fprintf (stderr, "Removed breakpoint.\n");
-
- /* For decr_pc_after_break targets, here is where we perform the
- decrement. We go immediately from this function to resuming,
- and can not safely call get_stop_pc () again. */
- if (the_low_target.set_pc != NULL)
- (*the_low_target.set_pc) (stop_pc);
-
- /* We consumed the pending SIGTRAP. */
- event_child->status_pending_p = 0;
- event_child->status_pending = 0;
-
- current_inferior = saved_inferior;
- return 1;
-}
-
-/* Return 1 if this process has an interesting status pending. This function
- may silently resume an inferior process. */
-static int
-status_pending_p (struct inferior_list_entry *entry, void *dummy)
-{
- struct process_info *process = (struct process_info *) entry;
-
- if (process->status_pending_p)
- if (check_removed_breakpoint (process))
- {
- /* This thread was stopped at a breakpoint, and the breakpoint
- is now gone. We were told to continue (or step...) all threads,
- so GDB isn't trying to single-step past this breakpoint.
- So instead of reporting the old SIGTRAP, pretend we got to
- the breakpoint just after it was removed instead of just
- before; resume the process. */
- linux_resume_one_process (&process->head, 0, 0);
- return 0;
- }
-
- return process->status_pending_p;
-}
-
-static void
-linux_wait_for_process (struct process_info **childp, int *wstatp)
-{
- int ret;
- int to_wait_for = -1;
-
- if (*childp != NULL)
- to_wait_for = (*childp)->lwpid;
-
- while (1)
- {
- ret = waitpid (to_wait_for, wstatp, WNOHANG);
-
- if (ret == -1)
- {
- if (errno != ECHILD)
- perror_with_name ("waitpid");
- }
- else if (ret > 0)
- break;
-
- ret = waitpid (to_wait_for, wstatp, WNOHANG | __WCLONE);
-
- if (ret == -1)
- {
- if (errno != ECHILD)
- perror_with_name ("waitpid (WCLONE)");
- }
- else if (ret > 0)
- break;
-
- usleep (1000);
- }
-
- if (debug_threads
- && (!WIFSTOPPED (*wstatp)
- || (WSTOPSIG (*wstatp) != 32
- && WSTOPSIG (*wstatp) != 33)))
- fprintf (stderr, "Got an event from %d (%x)\n", ret, *wstatp);
-
- if (to_wait_for == -1)
- *childp = (struct process_info *) find_inferior_id (&all_processes, ret);
-
- (*childp)->stopped = 1;
- (*childp)->pending_is_breakpoint = 0;
-
- if (debug_threads
- && WIFSTOPPED (*wstatp))
- {
- current_inferior = (struct thread_info *)
- find_inferior_id (&all_threads, (*childp)->tid);
- /* For testing only; i386_stop_pc prints out a diagnostic. */
- if (the_low_target.get_pc != NULL)
- get_stop_pc ();
- }
-}
-
-static int
-linux_wait_for_event (struct thread_info *child)
-{
- CORE_ADDR stop_pc;
- struct process_info *event_child;
- int wstat;
-
- /* Check for a process with a pending status. */
- /* It is possible that the user changed the pending task's registers since
- it stopped. We correctly handle the change of PC if we hit a breakpoint
- (in check_removed_breakpoints); signals should be reported anyway. */
- if (child == NULL)
- {
- event_child = (struct process_info *)
- find_inferior (&all_processes, status_pending_p, NULL);
- if (debug_threads && event_child)
- fprintf (stderr, "Got a pending child %d\n", event_child->lwpid);
- }
- else
- {
- event_child = get_thread_process (child);
- if (event_child->status_pending_p
- && check_removed_breakpoint (event_child))
- event_child = NULL;
- }
-
- if (event_child != NULL)
- {
- if (event_child->status_pending_p)
- {
- if (debug_threads)
- fprintf (stderr, "Got an event from pending child %d (%04x)\n",
- event_child->lwpid, event_child->status_pending);
- wstat = event_child->status_pending;
- event_child->status_pending_p = 0;
- event_child->status_pending = 0;
- current_inferior = get_process_thread (event_child);
- return wstat;
- }
- }
-
- /* We only enter this loop if no process has a pending wait status. Thus
- any action taken in response to a wait status inside this loop is
- responding as soon as we detect the status, not after any pending
- events. */
- while (1)
- {
- if (child == NULL)
- event_child = NULL;
- else
- event_child = get_thread_process (child);
-
- linux_wait_for_process (&event_child, &wstat);
-
- if (event_child == NULL)
- error ("event from unknown child");
-
- current_inferior = (struct thread_info *)
- find_inferior_id (&all_threads, event_child->tid);
-
- if (using_threads)
- {
- /* Check for thread exit. */
- if (! WIFSTOPPED (wstat))
- {
- if (debug_threads)
- fprintf (stderr, "Thread %d (LWP %d) exiting\n",
- event_child->tid, event_child->head.id);
-
- /* If the last thread is exiting, just return. */
- if (all_threads.head == all_threads.tail)
- return wstat;
-
- dead_thread_notify (event_child->tid);
-
- remove_inferior (&all_processes, &event_child->head);
- free (event_child);
- remove_thread (current_inferior);
- current_inferior = (struct thread_info *) all_threads.head;
-
- /* If we were waiting for this particular child to do something...
- well, it did something. */
- if (child != NULL)
- return wstat;
-
- /* Wait for a more interesting event. */
- continue;
- }
-
- if (WIFSTOPPED (wstat)
- && WSTOPSIG (wstat) == SIGSTOP
- && event_child->stop_expected)
- {
- if (debug_threads)
- fprintf (stderr, "Expected stop.\n");
- event_child->stop_expected = 0;
- linux_resume_one_process (&event_child->head,
- event_child->stepping, 0);
- continue;
- }
-
- /* FIXME drow/2002-06-09: Get signal numbers from the inferior's
- thread library? */
- if (WIFSTOPPED (wstat)
- && (WSTOPSIG (wstat) == SIGRTMIN
- || WSTOPSIG (wstat) == SIGRTMIN + 1))
- {
- if (debug_threads)
- fprintf (stderr, "Ignored signal %d for %d (LWP %d).\n",
- WSTOPSIG (wstat), event_child->tid,
- event_child->head.id);
- linux_resume_one_process (&event_child->head,
- event_child->stepping,
- WSTOPSIG (wstat));
- continue;
- }
- }
-
- /* If this event was not handled above, and is not a SIGTRAP, report
- it. */
- if (!WIFSTOPPED (wstat) || WSTOPSIG (wstat) != SIGTRAP)
- return wstat;
-
- /* If this target does not support breakpoints, we simply report the
- SIGTRAP; it's of no concern to us. */
- if (the_low_target.get_pc == NULL)
- return wstat;
-
- stop_pc = get_stop_pc ();
-
- /* bp_reinsert will only be set if we were single-stepping.
- Notice that we will resume the process after hitting
- a gdbserver breakpoint; single-stepping to/over one
- is not supported (yet). */
- if (event_child->bp_reinsert != 0)
- {
- if (debug_threads)
- fprintf (stderr, "Reinserted breakpoint.\n");
- reinsert_breakpoint (event_child->bp_reinsert);
- event_child->bp_reinsert = 0;
-
- /* Clear the single-stepping flag and SIGTRAP as we resume. */
- linux_resume_one_process (&event_child->head, 0, 0);
- continue;
- }
-
- if (debug_threads)
- fprintf (stderr, "Hit a (non-reinsert) breakpoint.\n");
-
- if (check_breakpoints (stop_pc) != 0)
- {
- /* We hit one of our own breakpoints. We mark it as a pending
- breakpoint, so that check_removed_breakpoints () will do the PC
- adjustment for us at the appropriate time. */
- event_child->pending_is_breakpoint = 1;
- event_child->pending_stop_pc = stop_pc;
-
- /* Now we need to put the breakpoint back. We continue in the event
- loop instead of simply replacing the breakpoint right away,
- in order to not lose signals sent to the thread that hit the
- breakpoint. Unfortunately this increases the window where another
- thread could sneak past the removed breakpoint. For the current
- use of server-side breakpoints (thread creation) this is
- acceptable; but it needs to be considered before this breakpoint
- mechanism can be used in more general ways. For some breakpoints
- it may be necessary to stop all other threads, but that should
- be avoided where possible.
-
- If breakpoint_reinsert_addr is NULL, that means that we can
- use PTRACE_SINGLESTEP on this platform. Uninsert the breakpoint,
- mark it for reinsertion, and single-step.
-
- Otherwise, call the target function to figure out where we need
- our temporary breakpoint, create it, and continue executing this
- process. */
- if (the_low_target.breakpoint_reinsert_addr == NULL)
- {
- event_child->bp_reinsert = stop_pc;
- uninsert_breakpoint (stop_pc);
- linux_resume_one_process (&event_child->head, 1, 0);
- }
- else
- {
- reinsert_breakpoint_by_bp
- (stop_pc, (*the_low_target.breakpoint_reinsert_addr) ());
- linux_resume_one_process (&event_child->head, 0, 0);
- }
-
- continue;
- }
-
- /* If we were single-stepping, we definitely want to report the
- SIGTRAP. The single-step operation has completed, so also
- clear the stepping flag; in general this does not matter,
- because the SIGTRAP will be reported to the client, which
- will give us a new action for this thread, but clear it for
- consistency anyway. It's safe to clear the stepping flag
- because the only consumer of get_stop_pc () after this point
- is check_removed_breakpoints, and pending_is_breakpoint is not
- set. It might be wiser to use a step_completed flag instead. */
- if (event_child->stepping)
- {
- event_child->stepping = 0;
- return wstat;
- }
-
- /* A SIGTRAP that we can't explain. It may have been a breakpoint.
- Check if it is a breakpoint, and if so mark the process information
- accordingly. This will handle both the necessary fiddling with the
- PC on decr_pc_after_break targets and suppressing extra threads
- hitting a breakpoint if two hit it at once and then GDB removes it
- after the first is reported. Arguably it would be better to report
- multiple threads hitting breakpoints simultaneously, but the current
- remote protocol does not allow this. */
- if ((*the_low_target.breakpoint_at) (stop_pc))
- {
- event_child->pending_is_breakpoint = 1;
- event_child->pending_stop_pc = stop_pc;
- }
-
- return wstat;
- }
-
- /* NOTREACHED */
- return 0;
-}
-
-/* Wait for process, returns status. */
-
-static unsigned char
-linux_wait (char *status)
-{
- int w;
- struct thread_info *child = NULL;
-
-retry:
- /* If we were only supposed to resume one thread, only wait for
- that thread - if it's still alive. If it died, however - which
- can happen if we're coming from the thread death case below -
- then we need to make sure we restart the other threads. We could
- pick a thread at random or restart all; restarting all is less
- arbitrary. */
- if (cont_thread > 0)
- {
- child = (struct thread_info *) find_inferior_id (&all_threads,
- cont_thread);
-
- /* No stepping, no signal - unless one is pending already, of course. */
- if (child == NULL)
- linux_resume (0, 0);
- }
-
- enable_async_io ();
- w = linux_wait_for_event (child);
- stop_all_processes ();
- disable_async_io ();
-
- /* If we are waiting for a particular child, and it exited,
- linux_wait_for_event will return its exit status. Similarly if
- the last child exited. If this is not the last child, however,
- do not report it as exited until there is a 'thread exited' response
- available in the remote protocol. Instead, just wait for another event.
- This should be safe, because if the thread crashed we will already
- have reported the termination signal to GDB; that should stop any
- in-progress stepping operations, etc.
-
- Report the exit status of the last thread to exit. This matches
- LinuxThreads' behavior. */
-
- if (all_threads.head == all_threads.tail)
- {
- if (WIFEXITED (w))
- {
- fprintf (stderr, "\nChild exited with retcode = %x \n", WEXITSTATUS (w));
- *status = 'W';
- clear_inferiors ();
- return ((unsigned char) WEXITSTATUS (w));
- }
- else if (!WIFSTOPPED (w))
- {
- fprintf (stderr, "\nChild terminated with signal = %x \n", WTERMSIG (w));
- clear_inferiors ();
- *status = 'X';
- return ((unsigned char) WTERMSIG (w));
- }
- }
- else
- {
- if (!WIFSTOPPED (w))
- goto retry;
- }
-
- *status = 'T';
- return ((unsigned char) WSTOPSIG (w));
-}
-
-static void
-send_sigstop (struct inferior_list_entry *entry)
-{
- struct process_info *process = (struct process_info *) entry;
-
- if (process->stopped)
- return;
-
- /* If we already have a pending stop signal for this process, don't
- send another. */
- if (process->stop_expected)
- {
- process->stop_expected = 0;
- return;
- }
-
- if (debug_threads)
- fprintf (stderr, "Sending sigstop to process %d\n", process->head.id);
-
- kill (process->head.id, SIGSTOP);
- process->sigstop_sent = 1;
-}
-
-static void
-wait_for_sigstop (struct inferior_list_entry *entry)
-{
- struct process_info *process = (struct process_info *) entry;
- struct thread_info *saved_inferior, *thread;
- int wstat, saved_tid;
-
- if (process->stopped)
- return;
-
- saved_inferior = current_inferior;
- saved_tid = ((struct inferior_list_entry *) saved_inferior)->id;
- thread = (struct thread_info *) find_inferior_id (&all_threads,
- process->tid);
- wstat = linux_wait_for_event (thread);
-
- /* If we stopped with a non-SIGSTOP signal, save it for later
- and record the pending SIGSTOP. If the process exited, just
- return. */
- if (WIFSTOPPED (wstat)
- && WSTOPSIG (wstat) != SIGSTOP)
- {
- if (debug_threads)
- fprintf (stderr, "Stopped with non-sigstop signal\n");
- process->status_pending_p = 1;
- process->status_pending = wstat;
- process->stop_expected = 1;
- }
-
- if (linux_thread_alive (saved_tid))
- current_inferior = saved_inferior;
- else
- {
- if (debug_threads)
- fprintf (stderr, "Previously current thread died.\n");
-
- /* Set a valid thread as current. */
- set_desired_inferior (0);
- }
-}
-
-static void
-stop_all_processes (void)
-{
- stopping_threads = 1;
- for_each_inferior (&all_processes, send_sigstop);
- for_each_inferior (&all_processes, wait_for_sigstop);
- stopping_threads = 0;
-}
-
-/* Resume execution of the inferior process.
- If STEP is nonzero, single-step it.
- If SIGNAL is nonzero, give it that signal. */
-
-static void
-linux_resume_one_process (struct inferior_list_entry *entry,
- int step, int signal)
-{
- struct process_info *process = (struct process_info *) entry;
- struct thread_info *saved_inferior;
-
- if (process->stopped == 0)
- return;
-
- /* If we have pending signals or status, and a new signal, enqueue the
- signal. Also enqueue the signal if we are waiting to reinsert a
- breakpoint; it will be picked up again below. */
- if (signal != 0
- && (process->status_pending_p || process->pending_signals != NULL
- || process->bp_reinsert != 0))
- {
- struct pending_signals *p_sig;
- p_sig = malloc (sizeof (*p_sig));
- p_sig->prev = process->pending_signals;
- p_sig->signal = signal;
- process->pending_signals = p_sig;
- }
-
- if (process->status_pending_p)
- return;
-
- saved_inferior = current_inferior;
- current_inferior = get_process_thread (process);
-
- if (debug_threads)
- fprintf (stderr, "Resuming process %d (%s, signal %d, stop %s)\n", inferior_pid,
- step ? "step" : "continue", signal,
- process->stop_expected ? "expected" : "not expected");
-
- /* This bit needs some thinking about. If we get a signal that
- we must report while a single-step reinsert is still pending,
- we often end up resuming the thread. It might be better to
- (ew) allow a stack of pending events; then we could be sure that
- the reinsert happened right away and not lose any signals.
-
- Making this stack would also shrink the window in which breakpoints are
- uninserted (see comment in linux_wait_for_process) but not enough for
- complete correctness, so it won't solve that problem. It may be
- worthwhile just to solve this one, however. */
- if (process->bp_reinsert != 0)
- {
- if (debug_threads)
- fprintf (stderr, " pending reinsert at %08lx", (long)process->bp_reinsert);
- if (step == 0)
- fprintf (stderr, "BAD - reinserting but not stepping.\n");
- step = 1;
-
- /* Postpone any pending signal. It was enqueued above. */
- signal = 0;
- }
-
- check_removed_breakpoint (process);
-
- if (debug_threads && the_low_target.get_pc != NULL)
- {
- fprintf (stderr, " ");
- (long) (*the_low_target.get_pc) ();
- }
-
- /* If we have pending signals, consume one unless we are trying to reinsert
- a breakpoint. */
- if (process->pending_signals != NULL && process->bp_reinsert == 0)
- {
- struct pending_signals **p_sig;
-
- p_sig = &process->pending_signals;
- while ((*p_sig)->prev != NULL)
- p_sig = &(*p_sig)->prev;
-
- signal = (*p_sig)->signal;
- free (*p_sig);
- *p_sig = NULL;
- }
-
- regcache_invalidate_one ((struct inferior_list_entry *)
- get_process_thread (process));
- errno = 0;
- process->stopped = 0;
- process->stepping = step;
- ptrace (step ? PTRACE_SINGLESTEP : PTRACE_CONT, process->lwpid, 0, signal);
-
- current_inferior = saved_inferior;
- if (errno)
- perror_with_name ("ptrace");
-}
-
-/* This function is called once per process other than the first
- one. The first process we are told the signal to continue
- with, and whether to step or continue; for all others, any
- existing signals will be marked in status_pending_p to be
- reported momentarily, and we preserve the stepping flag. */
-static void
-linux_continue_one_process (struct inferior_list_entry *entry)
-{
- struct process_info *process;
-
- process = (struct process_info *) entry;
- linux_resume_one_process (entry, process->stepping, 0);
-}
-
-static void
-linux_resume (int step, int signal)
-{
- struct process_info *process;
-
- process = get_thread_process (current_inferior);
-
- /* If the current process has a status pending, this signal will
- be enqueued and sent later. */
- linux_resume_one_process (&process->head, step, signal);
-
- if (cont_thread == 0 || cont_thread == -1)
- for_each_inferior (&all_processes, linux_continue_one_process);
-}
-
-#ifdef HAVE_LINUX_USRREGS
-
-int
-register_addr (int regnum)
-{
- int addr;
-
- if (regnum < 0 || regnum >= the_low_target.num_regs)
- error ("Invalid register number %d.", regnum);
-
- addr = the_low_target.regmap[regnum];
- if (addr == -1)
- addr = 0;
-
- return addr;
-}
-
-/* Fetch one register. */
-static void
-fetch_register (int regno)
-{
- CORE_ADDR regaddr;
- register int i;
- char *buf;
-
- if (regno >= the_low_target.num_regs)
- return;
- if ((*the_low_target.cannot_fetch_register) (regno))
- return;
-
- regaddr = register_addr (regno);
- if (regaddr == -1)
- return;
- buf = alloca (register_size (regno));
- for (i = 0; i < register_size (regno); i += sizeof (PTRACE_XFER_TYPE))
- {
- errno = 0;
- *(PTRACE_XFER_TYPE *) (buf + i) =
- ptrace (PTRACE_PEEKUSER, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, 0);
- regaddr += sizeof (PTRACE_XFER_TYPE);
- if (errno != 0)
- {
- /* Warning, not error, in case we are attached; sometimes the
- kernel doesn't let us at the registers. */
- char *err = strerror (errno);
- char *msg = alloca (strlen (err) + 128);
- sprintf (msg, "reading register %d: %s", regno, err);
- error (msg);
- goto error_exit;
- }
- }
- supply_register (regno, buf);
-
-error_exit:;
-}
-
-/* Fetch all registers, or just one, from the child process. */
-static void
-usr_fetch_inferior_registers (int regno)
-{
- if (regno == -1 || regno == 0)
- for (regno = 0; regno < the_low_target.num_regs; regno++)
- fetch_register (regno);
- else
- fetch_register (regno);
-}
-
-/* Store our register values back into the inferior.
- If REGNO is -1, do this for all registers.
- Otherwise, REGNO specifies which register (so we can save time). */
-static void
-usr_store_inferior_registers (int regno)
-{
- CORE_ADDR regaddr;
- int i;
- char *buf;
-
- if (regno >= 0)
- {
- if (regno >= the_low_target.num_regs)
- return;
-
- if ((*the_low_target.cannot_store_register) (regno) == 1)
- return;
-
- regaddr = register_addr (regno);
- if (regaddr == -1)
- return;
- errno = 0;
- buf = alloca (register_size (regno));
- collect_register (regno, buf);
- for (i = 0; i < register_size (regno); i += sizeof (PTRACE_XFER_TYPE))
- {
- errno = 0;
- ptrace (PTRACE_POKEUSER, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
- *(int *) (buf + i));
- if (errno != 0)
- {
- if ((*the_low_target.cannot_store_register) (regno) == 0)
- {
- char *err = strerror (errno);
- char *msg = alloca (strlen (err) + 128);
- sprintf (msg, "writing register %d: %s",
- regno, err);
- error (msg);
- return;
- }
- }
- regaddr += sizeof (int);
- }
- }
- else
- for (regno = 0; regno < the_low_target.num_regs; regno++)
- usr_store_inferior_registers (regno);
-}
-#endif /* HAVE_LINUX_USRREGS */
-
-
-
-#ifdef HAVE_LINUX_REGSETS
-
-static int
-regsets_fetch_inferior_registers ()
-{
- struct regset_info *regset;
-
- regset = target_regsets;
-
- while (regset->size >= 0)
- {
- void *buf;
- int res;
-
- if (regset->size == 0)
- {
- regset ++;
- continue;
- }
-
- buf = malloc (regset->size);
- res = ptrace (regset->get_request, inferior_pid, 0, buf);
- if (res < 0)
- {
- if (errno == EIO)
- {
- /* If we get EIO on the first regset, do not try regsets again.
- If we get EIO on a later regset, disable that regset. */
- if (regset == target_regsets)
- {
- use_regsets_p = 0;
- return -1;
- }
- else
- {
- regset->size = 0;
- continue;
- }
- }
- else
- {
- char s[256];
- sprintf (s, "ptrace(regsets_fetch_inferior_registers) PID=%d",
- inferior_pid);
- perror (s);
- }
- }
- regset->store_function (buf);
- regset ++;
- }
- return 0;
-}
-
-static int
-regsets_store_inferior_registers ()
-{
- struct regset_info *regset;
-
- regset = target_regsets;
-
- while (regset->size >= 0)
- {
- void *buf;
- int res;
-
- if (regset->size == 0)
- {
- regset ++;
- continue;
- }
-
- buf = malloc (regset->size);
- regset->fill_function (buf);
- res = ptrace (regset->set_request, inferior_pid, 0, buf);
- if (res < 0)
- {
- if (errno == EIO)
- {
- /* If we get EIO on the first regset, do not try regsets again.
- If we get EIO on a later regset, disable that regset. */
- if (regset == target_regsets)
- {
- use_regsets_p = 0;
- return -1;
- }
- else
- {
- regset->size = 0;
- continue;
- }
- }
- else
- {
- perror ("Warning: ptrace(regsets_store_inferior_registers)");
- }
- }
- regset ++;
- free (buf);
- }
- return 0;
-}
-
-#endif /* HAVE_LINUX_REGSETS */
-
-
-void
-linux_fetch_registers (int regno)
-{
-#ifdef HAVE_LINUX_REGSETS
- if (use_regsets_p)
- {
- if (regsets_fetch_inferior_registers () == 0)
- return;
- }
-#endif
-#ifdef HAVE_LINUX_USRREGS
- usr_fetch_inferior_registers (regno);
-#endif
-}
-
-void
-linux_store_registers (int regno)
-{
-#ifdef HAVE_LINUX_REGSETS
- if (use_regsets_p)
- {
- if (regsets_store_inferior_registers () == 0)
- return;
- }
-#endif
-#ifdef HAVE_LINUX_USRREGS
- usr_store_inferior_registers (regno);
-#endif
-}
-
-
-/* Copy LEN bytes from inferior's memory starting at MEMADDR
- to debugger memory starting at MYADDR. */
-
-static void
-linux_read_memory (CORE_ADDR memaddr, char *myaddr, int len)
-{
- register int i;
- /* Round starting address down to longword boundary. */
- register CORE_ADDR addr = memaddr & -(CORE_ADDR) sizeof (PTRACE_XFER_TYPE);
- /* Round ending address up; get number of longwords that makes. */
- register int count
- = (((memaddr + len) - addr) + sizeof (PTRACE_XFER_TYPE) - 1)
- / sizeof (PTRACE_XFER_TYPE);
- /* Allocate buffer of that many longwords. */
- register PTRACE_XFER_TYPE *buffer
- = (PTRACE_XFER_TYPE *) alloca (count * sizeof (PTRACE_XFER_TYPE));
-
- /* Read all the longwords */
- for (i = 0; i < count; i++, addr += sizeof (PTRACE_XFER_TYPE))
- {
- buffer[i] = ptrace (PTRACE_PEEKTEXT, inferior_pid, (PTRACE_ARG3_TYPE) addr, 0);
- }
-
- /* Copy appropriate bytes out of the buffer. */
- memcpy (myaddr, (char *) buffer + (memaddr & (sizeof (PTRACE_XFER_TYPE) - 1)), len);
-}
-
-/* Copy LEN bytes of data from debugger memory at MYADDR
- to inferior's memory at MEMADDR.
- On failure (cannot write the inferior)
- returns the value of errno. */
-
-static int
-linux_write_memory (CORE_ADDR memaddr, const char *myaddr, int len)
-{
- register int i;
- /* Round starting address down to longword boundary. */
- register CORE_ADDR addr = memaddr & -(CORE_ADDR) sizeof (PTRACE_XFER_TYPE);
- /* Round ending address up; get number of longwords that makes. */
- register int count
- = (((memaddr + len) - addr) + sizeof (PTRACE_XFER_TYPE) - 1) / sizeof (PTRACE_XFER_TYPE);
- /* Allocate buffer of that many longwords. */
- register PTRACE_XFER_TYPE *buffer = (PTRACE_XFER_TYPE *) alloca (count * sizeof (PTRACE_XFER_TYPE));
- extern int errno;
-
- if (debug_threads)
- {
- fprintf (stderr, "Writing %02x to %08lx\n", (unsigned)myaddr[0], (long)memaddr);
- }
-
- /* Fill start and end extra bytes of buffer with existing memory data. */
-
- buffer[0] = ptrace (PTRACE_PEEKTEXT, inferior_pid,
- (PTRACE_ARG3_TYPE) addr, 0);
-
- if (count > 1)
- {
- buffer[count - 1]
- = ptrace (PTRACE_PEEKTEXT, inferior_pid,
- (PTRACE_ARG3_TYPE) (addr + (count - 1)
- * sizeof (PTRACE_XFER_TYPE)),
- 0);
- }
-
- /* Copy data to be written over corresponding part of buffer */
-
- memcpy ((char *) buffer + (memaddr & (sizeof (PTRACE_XFER_TYPE) - 1)), myaddr, len);
-
- /* Write the entire buffer. */
-
- for (i = 0; i < count; i++, addr += sizeof (PTRACE_XFER_TYPE))
- {
- errno = 0;
- ptrace (PTRACE_POKETEXT, inferior_pid, (PTRACE_ARG3_TYPE) addr, buffer[i]);
- if (errno)
- return errno;
- }
-
- return 0;
-}
-
-static void
-linux_look_up_symbols (void)
-{
-#ifdef USE_THREAD_DB
- if (using_threads)
- return;
-
- using_threads = thread_db_init ();
-#endif
-}
-
-
-static struct target_ops linux_target_ops = {
- linux_create_inferior,
- linux_attach,
- linux_kill,
- linux_thread_alive,
- linux_resume,
- linux_wait,
- linux_fetch_registers,
- linux_store_registers,
- linux_read_memory,
- linux_write_memory,
- linux_look_up_symbols,
-};
-
-static void
-linux_init_signals ()
-{
- /* FIXME drow/2002-06-09: As above, we should check with LinuxThreads
- to find what the cancel signal actually is. */
- signal (SIGRTMIN+1, SIG_IGN);
-}
-
-void
-initialize_low (void)
-{
- using_threads = 0;
- set_target_ops (&linux_target_ops);
- set_breakpoint_data (the_low_target.breakpoint,
- the_low_target.breakpoint_len);
- init_registers ();
- linux_init_signals ();
-}