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authornobody <>2002-09-07 00:00:05 +0000
committernobody <>2002-09-07 00:00:05 +0000
commitc1aa2a27e755c883b5c49b223120dfb712ea4e28 (patch)
treea98633075cd1f2b034b49446e83e522708d11f68 /gdb/go32-nat.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 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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/go32-nat.c')
-rw-r--r--gdb/go32-nat.c1963
1 files changed, 0 insertions, 1963 deletions
diff --git a/gdb/go32-nat.c b/gdb/go32-nat.c
deleted file mode 100644
index a16b1b3..0000000
--- a/gdb/go32-nat.c
+++ /dev/null
@@ -1,1963 +0,0 @@
-/* Native debugging support for Intel x86 running DJGPP.
- Copyright 1997, 1999, 2000, 2001 Free Software Foundation, Inc.
- Written by Robert Hoehne.
-
- 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 <fcntl.h>
-
-#include "defs.h"
-#include "inferior.h"
-#include "gdb_wait.h"
-#include "gdbcore.h"
-#include "command.h"
-#include "gdbcmd.h"
-#include "floatformat.h"
-#include "buildsym.h"
-#include "i387-tdep.h"
-#include "i386-tdep.h"
-#include "value.h"
-#include "regcache.h"
-#include "gdb_string.h"
-
-#include <stdio.h> /* might be required for __DJGPP_MINOR__ */
-#include <stdlib.h>
-#include <ctype.h>
-#include <errno.h>
-#include <unistd.h>
-#include <sys/utsname.h>
-#include <io.h>
-#include <dos.h>
-#include <dpmi.h>
-#include <go32.h>
-#include <sys/farptr.h>
-#include <debug/v2load.h>
-#include <debug/dbgcom.h>
-#if __DJGPP_MINOR__ > 2
-#include <debug/redir.h>
-#endif
-
-#if __DJGPP_MINOR__ < 3
-/* This code will be provided from DJGPP 2.03 on. Until then I code it
- here */
-typedef struct
- {
- unsigned short sig0;
- unsigned short sig1;
- unsigned short sig2;
- unsigned short sig3;
- unsigned short exponent:15;
- unsigned short sign:1;
- }
-NPXREG;
-
-typedef struct
- {
- unsigned int control;
- unsigned int status;
- unsigned int tag;
- unsigned int eip;
- unsigned int cs;
- unsigned int dataptr;
- unsigned int datasel;
- NPXREG reg[8];
- }
-NPX;
-
-static NPX npx;
-
-static void save_npx (void); /* Save the FPU of the debugged program */
-static void load_npx (void); /* Restore the FPU of the debugged program */
-
-/* ------------------------------------------------------------------------- */
-/* Store the contents of the NPX in the global variable `npx'. */
-/* *INDENT-OFF* */
-
-static void
-save_npx (void)
-{
- asm ("inb $0xa0, %%al \n\
- testb $0x20, %%al \n\
- jz 1f \n\
- xorb %%al, %%al \n\
- outb %%al, $0xf0 \n\
- movb $0x20, %%al \n\
- outb %%al, $0xa0 \n\
- outb %%al, $0x20 \n\
-1: \n\
- fnsave %0 \n\
- fwait "
-: "=m" (npx)
-: /* No input */
-: "%eax");
-}
-
-/* *INDENT-ON* */
-
-
-/* ------------------------------------------------------------------------- */
-/* Reload the contents of the NPX from the global variable `npx'. */
-
-static void
-load_npx (void)
-{
- asm ("frstor %0":"=m" (npx));
-}
-/* ------------------------------------------------------------------------- */
-/* Stubs for the missing redirection functions. */
-typedef struct {
- char *command;
- int redirected;
-} cmdline_t;
-
-void
-redir_cmdline_delete (cmdline_t *ptr)
-{
- ptr->redirected = 0;
-}
-
-int
-redir_cmdline_parse (const char *args, cmdline_t *ptr)
-{
- return -1;
-}
-
-int
-redir_to_child (cmdline_t *ptr)
-{
- return 1;
-}
-
-int
-redir_to_debugger (cmdline_t *ptr)
-{
- return 1;
-}
-
-int
-redir_debug_init (cmdline_t *ptr)
-{
- return 0;
-}
-#endif /* __DJGPP_MINOR < 3 */
-
-typedef enum { wp_insert, wp_remove, wp_count } wp_op;
-
-/* This holds the current reference counts for each debug register. */
-static int dr_ref_count[4];
-
-#define SOME_PID 42
-
-static int prog_has_started = 0;
-static void go32_open (char *name, int from_tty);
-static void go32_close (int quitting);
-static void go32_attach (char *args, int from_tty);
-static void go32_detach (char *args, int from_tty);
-static void go32_resume (ptid_t ptid, int step,
- enum target_signal siggnal);
-static ptid_t go32_wait (ptid_t ptid,
- struct target_waitstatus *status);
-static void go32_fetch_registers (int regno);
-static void store_register (int regno);
-static void go32_store_registers (int regno);
-static void go32_prepare_to_store (void);
-static int go32_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len,
- int write,
- struct mem_attrib *attrib,
- struct target_ops *target);
-static void go32_files_info (struct target_ops *target);
-static void go32_stop (void);
-static void go32_kill_inferior (void);
-static void go32_create_inferior (char *exec_file, char *args, char **env);
-static void go32_mourn_inferior (void);
-static int go32_can_run (void);
-
-static struct target_ops go32_ops;
-static void go32_terminal_init (void);
-static void go32_terminal_inferior (void);
-static void go32_terminal_ours (void);
-
-#define r_ofs(x) (offsetof(TSS,x))
-
-static struct
-{
- size_t tss_ofs;
- size_t size;
-}
-regno_mapping[] =
-{
- {r_ofs (tss_eax), 4}, /* normal registers, from a_tss */
- {r_ofs (tss_ecx), 4},
- {r_ofs (tss_edx), 4},
- {r_ofs (tss_ebx), 4},
- {r_ofs (tss_esp), 4},
- {r_ofs (tss_ebp), 4},
- {r_ofs (tss_esi), 4},
- {r_ofs (tss_edi), 4},
- {r_ofs (tss_eip), 4},
- {r_ofs (tss_eflags), 4},
- {r_ofs (tss_cs), 2},
- {r_ofs (tss_ss), 2},
- {r_ofs (tss_ds), 2},
- {r_ofs (tss_es), 2},
- {r_ofs (tss_fs), 2},
- {r_ofs (tss_gs), 2},
- {0, 10}, /* 8 FP registers, from npx.reg[] */
- {1, 10},
- {2, 10},
- {3, 10},
- {4, 10},
- {5, 10},
- {6, 10},
- {7, 10},
- /* The order of the next 7 registers must be consistent
- with their numbering in config/i386/tm-i386.h, which see. */
- {0, 2}, /* control word, from npx */
- {4, 2}, /* status word, from npx */
- {8, 2}, /* tag word, from npx */
- {16, 2}, /* last FP exception CS from npx */
- {12, 4}, /* last FP exception EIP from npx */
- {24, 2}, /* last FP exception operand selector from npx */
- {20, 4}, /* last FP exception operand offset from npx */
- {18, 2} /* last FP opcode from npx */
-};
-
-static struct
- {
- int go32_sig;
- enum target_signal gdb_sig;
- }
-sig_map[] =
-{
- {0, TARGET_SIGNAL_FPE},
- {1, TARGET_SIGNAL_TRAP},
- /* Exception 2 is triggered by the NMI. DJGPP handles it as SIGILL,
- but I think SIGBUS is better, since the NMI is usually activated
- as a result of a memory parity check failure. */
- {2, TARGET_SIGNAL_BUS},
- {3, TARGET_SIGNAL_TRAP},
- {4, TARGET_SIGNAL_FPE},
- {5, TARGET_SIGNAL_SEGV},
- {6, TARGET_SIGNAL_ILL},
- {7, TARGET_SIGNAL_EMT}, /* no-coprocessor exception */
- {8, TARGET_SIGNAL_SEGV},
- {9, TARGET_SIGNAL_SEGV},
- {10, TARGET_SIGNAL_BUS},
- {11, TARGET_SIGNAL_SEGV},
- {12, TARGET_SIGNAL_SEGV},
- {13, TARGET_SIGNAL_SEGV},
- {14, TARGET_SIGNAL_SEGV},
- {16, TARGET_SIGNAL_FPE},
- {17, TARGET_SIGNAL_BUS},
- {31, TARGET_SIGNAL_ILL},
- {0x1b, TARGET_SIGNAL_INT},
- {0x75, TARGET_SIGNAL_FPE},
- {0x78, TARGET_SIGNAL_ALRM},
- {0x79, TARGET_SIGNAL_INT},
- {0x7a, TARGET_SIGNAL_QUIT},
- {-1, TARGET_SIGNAL_LAST}
-};
-
-static struct {
- enum target_signal gdb_sig;
- int djgpp_excepno;
-} excepn_map[] = {
- {TARGET_SIGNAL_0, -1},
- {TARGET_SIGNAL_ILL, 6}, /* Invalid Opcode */
- {TARGET_SIGNAL_EMT, 7}, /* triggers SIGNOFP */
- {TARGET_SIGNAL_SEGV, 13}, /* GPF */
- {TARGET_SIGNAL_BUS, 17}, /* Alignment Check */
- /* The rest are fake exceptions, see dpmiexcp.c in djlsr*.zip for
- details. */
- {TARGET_SIGNAL_TERM, 0x1b}, /* triggers Ctrl-Break type of SIGINT */
- {TARGET_SIGNAL_FPE, 0x75},
- {TARGET_SIGNAL_INT, 0x79},
- {TARGET_SIGNAL_QUIT, 0x7a},
- {TARGET_SIGNAL_ALRM, 0x78}, /* triggers SIGTIMR */
- {TARGET_SIGNAL_PROF, 0x78},
- {TARGET_SIGNAL_LAST, -1}
-};
-
-static void
-go32_open (char *name, int from_tty)
-{
- printf_unfiltered ("Done. Use the \"run\" command to run the program.\n");
-}
-
-static void
-go32_close (int quitting)
-{
-}
-
-static void
-go32_attach (char *args, int from_tty)
-{
- error ("\
-You cannot attach to a running program on this platform.\n\
-Use the `run' command to run DJGPP programs.");
-}
-
-static void
-go32_detach (char *args, int from_tty)
-{
-}
-
-static int resume_is_step;
-static int resume_signal = -1;
-
-static void
-go32_resume (ptid_t ptid, int step, enum target_signal siggnal)
-{
- int i;
-
- resume_is_step = step;
-
- if (siggnal != TARGET_SIGNAL_0 && siggnal != TARGET_SIGNAL_TRAP)
- {
- for (i = 0, resume_signal = -1;
- excepn_map[i].gdb_sig != TARGET_SIGNAL_LAST; i++)
- if (excepn_map[i].gdb_sig == siggnal)
- {
- resume_signal = excepn_map[i].djgpp_excepno;
- break;
- }
- if (resume_signal == -1)
- printf_unfiltered ("Cannot deliver signal %s on this platform.\n",
- target_signal_to_name (siggnal));
- }
-}
-
-static char child_cwd[FILENAME_MAX];
-
-static ptid_t
-go32_wait (ptid_t ptid, struct target_waitstatus *status)
-{
- int i;
- unsigned char saved_opcode;
- unsigned long INT3_addr = 0;
- int stepping_over_INT = 0;
-
- a_tss.tss_eflags &= 0xfeff; /* reset the single-step flag (TF) */
- if (resume_is_step)
- {
- /* If the next instruction is INT xx or INTO, we need to handle
- them specially. Intel manuals say that these instructions
- reset the single-step flag (a.k.a. TF). However, it seems
- that, at least in the DPMI environment, and at least when
- stepping over the DPMI interrupt 31h, the problem is having
- TF set at all when INT 31h is executed: the debuggee either
- crashes (and takes the system with it) or is killed by a
- SIGTRAP.
-
- So we need to emulate single-step mode: we put an INT3 opcode
- right after the INT xx instruction, let the debuggee run
- until it hits INT3 and stops, then restore the original
- instruction which we overwrote with the INT3 opcode, and back
- up the debuggee's EIP to that instruction. */
- read_child (a_tss.tss_eip, &saved_opcode, 1);
- if (saved_opcode == 0xCD || saved_opcode == 0xCE)
- {
- unsigned char INT3_opcode = 0xCC;
-
- INT3_addr
- = saved_opcode == 0xCD ? a_tss.tss_eip + 2 : a_tss.tss_eip + 1;
- stepping_over_INT = 1;
- read_child (INT3_addr, &saved_opcode, 1);
- write_child (INT3_addr, &INT3_opcode, 1);
- }
- else
- a_tss.tss_eflags |= 0x0100; /* normal instruction: set TF */
- }
-
- /* The special value FFFFh in tss_trap indicates to run_child that
- tss_irqn holds a signal to be delivered to the debuggee. */
- if (resume_signal <= -1)
- {
- a_tss.tss_trap = 0;
- a_tss.tss_irqn = 0xff;
- }
- else
- {
- a_tss.tss_trap = 0xffff; /* run_child looks for this */
- a_tss.tss_irqn = resume_signal;
- }
-
- /* The child might change working directory behind our back. The
- GDB users won't like the side effects of that when they work with
- relative file names, and GDB might be confused by its current
- directory not being in sync with the truth. So we always make a
- point of changing back to where GDB thinks is its cwd, when we
- return control to the debugger, but restore child's cwd before we
- run it. */
- /* Initialize child_cwd, before the first call to run_child and not
- in the initialization, so the child get also the changed directory
- set with the gdb-command "cd ..." */
- if (!*child_cwd)
- /* Initialize child's cwd with the current one. */
- getcwd (child_cwd, sizeof (child_cwd));
-
- chdir (child_cwd);
-
-#if __DJGPP_MINOR__ < 3
- load_npx ();
-#endif
- run_child ();
-#if __DJGPP_MINOR__ < 3
- save_npx ();
-#endif
-
- /* Did we step over an INT xx instruction? */
- if (stepping_over_INT && a_tss.tss_eip == INT3_addr + 1)
- {
- /* Restore the original opcode. */
- a_tss.tss_eip--; /* EIP points *after* the INT3 instruction */
- write_child (a_tss.tss_eip, &saved_opcode, 1);
- /* Simulate a TRAP exception. */
- a_tss.tss_irqn = 1;
- a_tss.tss_eflags |= 0x0100;
- }
-
- getcwd (child_cwd, sizeof (child_cwd)); /* in case it has changed */
- chdir (current_directory);
-
- if (a_tss.tss_irqn == 0x21)
- {
- status->kind = TARGET_WAITKIND_EXITED;
- status->value.integer = a_tss.tss_eax & 0xff;
- }
- else
- {
- status->value.sig = TARGET_SIGNAL_UNKNOWN;
- status->kind = TARGET_WAITKIND_STOPPED;
- for (i = 0; sig_map[i].go32_sig != -1; i++)
- {
- if (a_tss.tss_irqn == sig_map[i].go32_sig)
- {
-#if __DJGPP_MINOR__ < 3
- if ((status->value.sig = sig_map[i].gdb_sig) !=
- TARGET_SIGNAL_TRAP)
- status->kind = TARGET_WAITKIND_SIGNALLED;
-#else
- status->value.sig = sig_map[i].gdb_sig;
-#endif
- break;
- }
- }
- }
- return pid_to_ptid (SOME_PID);
-}
-
-static void
-fetch_register (int regno)
-{
- if (regno < FP0_REGNUM)
- supply_register (regno, (char *) &a_tss + regno_mapping[regno].tss_ofs);
- else if (FP_REGNUM_P (regno) || FPC_REGNUM_P (regno))
- i387_supply_register (regno, (char *) &npx);
- else
- internal_error (__FILE__, __LINE__,
- "Invalid register no. %d in fetch_register.", regno);
-}
-
-static void
-go32_fetch_registers (int regno)
-{
- if (regno >= 0)
- fetch_register (regno);
- else
- {
- for (regno = 0; regno < FP0_REGNUM; regno++)
- fetch_register (regno);
- i387_supply_fsave ((char *) &npx);
- }
-}
-
-static void
-store_register (int regno)
-{
- if (regno < FP0_REGNUM)
- regcache_collect (regno, (char *) &a_tss + regno_mapping[regno].tss_ofs);
- else if (FP_REGNUM_P (regno) || FPC_REGNUM_P (regno))
- i387_fill_fsave ((char *) &npx, regno);
- else
- internal_error (__FILE__, __LINE__,
- "Invalid register no. %d in store_register.", regno);
-}
-
-static void
-go32_store_registers (int regno)
-{
- unsigned r;
-
- if (regno >= 0)
- store_register (regno);
- else
- {
- for (r = 0; r < FP0_REGNUM; r++)
- store_register (r);
- i387_fill_fsave ((char *) &npx, -1);
- }
-}
-
-static void
-go32_prepare_to_store (void)
-{
-}
-
-static int
-go32_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write,
- struct mem_attrib *attrib, struct target_ops *target)
-{
- if (write)
- {
- if (write_child (memaddr, myaddr, len))
- {
- return 0;
- }
- else
- {
- return len;
- }
- }
- else
- {
- if (read_child (memaddr, myaddr, len))
- {
- return 0;
- }
- else
- {
- return len;
- }
- }
-}
-
-static cmdline_t child_cmd; /* parsed child's command line kept here */
-
-static void
-go32_files_info (struct target_ops *target)
-{
- printf_unfiltered ("You are running a DJGPP V2 program.\n");
-}
-
-static void
-go32_stop (void)
-{
- normal_stop ();
- cleanup_client ();
- inferior_ptid = null_ptid;
- prog_has_started = 0;
-}
-
-static void
-go32_kill_inferior (void)
-{
- redir_cmdline_delete (&child_cmd);
- resume_signal = -1;
- resume_is_step = 0;
- unpush_target (&go32_ops);
-}
-
-static void
-go32_create_inferior (char *exec_file, char *args, char **env)
-{
- extern char **environ;
- jmp_buf start_state;
- char *cmdline;
- char **env_save = environ;
- size_t cmdlen;
-
- /* If no exec file handed to us, get it from the exec-file command -- with
- a good, common error message if none is specified. */
- if (exec_file == 0)
- exec_file = get_exec_file (1);
-
- if (prog_has_started)
- {
- go32_stop ();
- go32_kill_inferior ();
- }
- resume_signal = -1;
- resume_is_step = 0;
-
- /* Initialize child's cwd as empty to be initialized when starting
- the child. */
- *child_cwd = 0;
-
- /* Init command line storage. */
- if (redir_debug_init (&child_cmd) == -1)
- internal_error (__FILE__, __LINE__,
- "Cannot allocate redirection storage: not enough memory.\n");
-
- /* Parse the command line and create redirections. */
- if (strpbrk (args, "<>"))
- {
- if (redir_cmdline_parse (args, &child_cmd) == 0)
- args = child_cmd.command;
- else
- error ("Syntax error in command line.");
- }
- else
- child_cmd.command = xstrdup (args);
-
- cmdlen = strlen (args);
- /* v2loadimage passes command lines via DOS memory, so it cannot
- possibly handle commands longer than 1MB. */
- if (cmdlen > 1024*1024)
- error ("Command line too long.");
-
- cmdline = xmalloc (cmdlen + 4);
- strcpy (cmdline + 1, args);
- /* If the command-line length fits into DOS 126-char limits, use the
- DOS command tail format; otherwise, tell v2loadimage to pass it
- through a buffer in conventional memory. */
- if (cmdlen < 127)
- {
- cmdline[0] = strlen (args);
- cmdline[cmdlen + 1] = 13;
- }
- else
- cmdline[0] = 0xff; /* signal v2loadimage it's a long command */
-
- environ = env;
-
- if (v2loadimage (exec_file, cmdline, start_state))
- {
- environ = env_save;
- printf_unfiltered ("Load failed for image %s\n", exec_file);
- exit (1);
- }
- environ = env_save;
- xfree (cmdline);
-
- edi_init (start_state);
-#if __DJGPP_MINOR__ < 3
- save_npx ();
-#endif
-
- inferior_ptid = pid_to_ptid (SOME_PID);
- push_target (&go32_ops);
- clear_proceed_status ();
- insert_breakpoints ();
- proceed ((CORE_ADDR) -1, TARGET_SIGNAL_0, 0);
- prog_has_started = 1;
-}
-
-static void
-go32_mourn_inferior (void)
-{
- /* We need to make sure all the breakpoint enable bits in the DR7
- register are reset when the inferior exits. Otherwise, if they
- rerun the inferior, the uncleared bits may cause random SIGTRAPs,
- failure to set more watchpoints, and other calamities. It would
- be nice if GDB itself would take care to remove all breakpoints
- at all times, but it doesn't, probably under an assumption that
- the OS cleans up when the debuggee exits. */
- i386_cleanup_dregs ();
- go32_kill_inferior ();
- generic_mourn_inferior ();
-}
-
-static int
-go32_can_run (void)
-{
- return 1;
-}
-
-/* Hardware watchpoint support. */
-
-#define D_REGS edi.dr
-#define CONTROL D_REGS[7]
-#define STATUS D_REGS[6]
-
-/* Pass the address ADDR to the inferior in the I'th debug register.
- Here we just store the address in D_REGS, the watchpoint will be
- actually set up when go32_wait runs the debuggee. */
-void
-go32_set_dr (int i, CORE_ADDR addr)
-{
- if (i < 0 || i > 3)
- internal_error (__FILE__, __LINE__,
- "Invalid register %d in go32_set_dr.\n", i);
- D_REGS[i] = addr;
-}
-
-/* Pass the value VAL to the inferior in the DR7 debug control
- register. Here we just store the address in D_REGS, the watchpoint
- will be actually set up when go32_wait runs the debuggee. */
-void
-go32_set_dr7 (unsigned val)
-{
- CONTROL = val;
-}
-
-/* Get the value of the DR6 debug status register from the inferior.
- Here we just return the value stored in D_REGS, as we've got it
- from the last go32_wait call. */
-unsigned
-go32_get_dr6 (void)
-{
- return STATUS;
-}
-
-/* Put the device open on handle FD into either raw or cooked
- mode, return 1 if it was in raw mode, zero otherwise. */
-
-static int
-device_mode (int fd, int raw_p)
-{
- int oldmode, newmode;
- __dpmi_regs regs;
-
- regs.x.ax = 0x4400;
- regs.x.bx = fd;
- __dpmi_int (0x21, &regs);
- if (regs.x.flags & 1)
- return -1;
- newmode = oldmode = regs.x.dx;
-
- if (raw_p)
- newmode |= 0x20;
- else
- newmode &= ~0x20;
-
- if (oldmode & 0x80) /* Only for character dev */
- {
- regs.x.ax = 0x4401;
- regs.x.bx = fd;
- regs.x.dx = newmode & 0xff; /* Force upper byte zero, else it fails */
- __dpmi_int (0x21, &regs);
- if (regs.x.flags & 1)
- return -1;
- }
- return (oldmode & 0x20) == 0x20;
-}
-
-
-static int inf_mode_valid = 0;
-static int inf_terminal_mode;
-
-/* This semaphore is needed because, amazingly enough, GDB calls
- target.to_terminal_ours more than once after the inferior stops.
- But we need the information from the first call only, since the
- second call will always see GDB's own cooked terminal. */
-static int terminal_is_ours = 1;
-
-static void
-go32_terminal_init (void)
-{
- inf_mode_valid = 0; /* reinitialize, in case they are restarting child */
- terminal_is_ours = 1;
-}
-
-static void
-go32_terminal_info (char *args, int from_tty)
-{
- printf_unfiltered ("Inferior's terminal is in %s mode.\n",
- !inf_mode_valid
- ? "default" : inf_terminal_mode ? "raw" : "cooked");
-
-#if __DJGPP_MINOR__ > 2
- if (child_cmd.redirection)
- {
- int i;
-
- for (i = 0; i < DBG_HANDLES; i++)
- {
- if (child_cmd.redirection[i]->file_name)
- printf_unfiltered ("\tFile handle %d is redirected to `%s'.\n",
- i, child_cmd.redirection[i]->file_name);
- else if (_get_dev_info (child_cmd.redirection[i]->inf_handle) == -1)
- printf_unfiltered
- ("\tFile handle %d appears to be closed by inferior.\n", i);
- /* Mask off the raw/cooked bit when comparing device info words. */
- else if ((_get_dev_info (child_cmd.redirection[i]->inf_handle) & 0xdf)
- != (_get_dev_info (i) & 0xdf))
- printf_unfiltered
- ("\tFile handle %d appears to be redirected by inferior.\n", i);
- }
- }
-#endif
-}
-
-static void
-go32_terminal_inferior (void)
-{
- /* Redirect standard handles as child wants them. */
- errno = 0;
- if (redir_to_child (&child_cmd) == -1)
- {
- redir_to_debugger (&child_cmd);
- error ("Cannot redirect standard handles for program: %s.",
- safe_strerror (errno));
- }
- /* set the console device of the inferior to whatever mode
- (raw or cooked) we found it last time */
- if (terminal_is_ours)
- {
- if (inf_mode_valid)
- device_mode (0, inf_terminal_mode);
- terminal_is_ours = 0;
- }
-}
-
-static void
-go32_terminal_ours (void)
-{
- /* Switch to cooked mode on the gdb terminal and save the inferior
- terminal mode to be restored when it is resumed */
- if (!terminal_is_ours)
- {
- inf_terminal_mode = device_mode (0, 0);
- if (inf_terminal_mode != -1)
- inf_mode_valid = 1;
- else
- /* If device_mode returned -1, we don't know what happens with
- handle 0 anymore, so make the info invalid. */
- inf_mode_valid = 0;
- terminal_is_ours = 1;
-
- /* Restore debugger's standard handles. */
- errno = 0;
- if (redir_to_debugger (&child_cmd) == -1)
- {
- redir_to_child (&child_cmd);
- error ("Cannot redirect standard handles for debugger: %s.",
- safe_strerror (errno));
- }
- }
-}
-
-static void
-init_go32_ops (void)
-{
- go32_ops.to_shortname = "djgpp";
- go32_ops.to_longname = "djgpp target process";
- go32_ops.to_doc =
- "Program loaded by djgpp, when gdb is used as an external debugger";
- go32_ops.to_open = go32_open;
- go32_ops.to_close = go32_close;
- go32_ops.to_attach = go32_attach;
- go32_ops.to_detach = go32_detach;
- go32_ops.to_resume = go32_resume;
- go32_ops.to_wait = go32_wait;
- go32_ops.to_fetch_registers = go32_fetch_registers;
- go32_ops.to_store_registers = go32_store_registers;
- go32_ops.to_prepare_to_store = go32_prepare_to_store;
- go32_ops.to_xfer_memory = go32_xfer_memory;
- go32_ops.to_files_info = go32_files_info;
- go32_ops.to_insert_breakpoint = memory_insert_breakpoint;
- go32_ops.to_remove_breakpoint = memory_remove_breakpoint;
- go32_ops.to_terminal_init = go32_terminal_init;
- go32_ops.to_terminal_inferior = go32_terminal_inferior;
- go32_ops.to_terminal_ours_for_output = go32_terminal_ours;
- go32_ops.to_terminal_ours = go32_terminal_ours;
- go32_ops.to_terminal_info = go32_terminal_info;
- go32_ops.to_kill = go32_kill_inferior;
- go32_ops.to_create_inferior = go32_create_inferior;
- go32_ops.to_mourn_inferior = go32_mourn_inferior;
- go32_ops.to_can_run = go32_can_run;
- go32_ops.to_stop = go32_stop;
- go32_ops.to_stratum = process_stratum;
- go32_ops.to_has_all_memory = 1;
- go32_ops.to_has_memory = 1;
- go32_ops.to_has_stack = 1;
- go32_ops.to_has_registers = 1;
- go32_ops.to_has_execution = 1;
- go32_ops.to_magic = OPS_MAGIC;
-
- /* Initialize child's cwd as empty to be initialized when starting
- the child. */
- *child_cwd = 0;
-
- /* Initialize child's command line storage. */
- if (redir_debug_init (&child_cmd) == -1)
- internal_error (__FILE__, __LINE__,
- "Cannot allocate redirection storage: not enough memory.\n");
-
- /* We are always processing GCC-compiled programs. */
- processing_gcc_compilation = 2;
-}
-
-unsigned short windows_major, windows_minor;
-
-/* Compute the version Windows reports via Int 2Fh/AX=1600h. */
-static void
-go32_get_windows_version(void)
-{
- __dpmi_regs r;
-
- r.x.ax = 0x1600;
- __dpmi_int(0x2f, &r);
- if (r.h.al > 2 && r.h.al != 0x80 && r.h.al != 0xff
- && (r.h.al > 3 || r.h.ah > 0))
- {
- windows_major = r.h.al;
- windows_minor = r.h.ah;
- }
- else
- windows_major = 0xff; /* meaning no Windows */
-}
-
-/* A subroutine of go32_sysinfo to display memory info. */
-static void
-print_mem (unsigned long datum, const char *header, int in_pages_p)
-{
- if (datum != 0xffffffffUL)
- {
- if (in_pages_p)
- datum <<= 12;
- puts_filtered (header);
- if (datum > 1024)
- {
- printf_filtered ("%lu KB", datum >> 10);
- if (datum > 1024 * 1024)
- printf_filtered (" (%lu MB)", datum >> 20);
- }
- else
- printf_filtered ("%lu Bytes", datum);
- puts_filtered ("\n");
- }
-}
-
-/* Display assorted information about the underlying OS. */
-static void
-go32_sysinfo (char *arg, int from_tty)
-{
- struct utsname u;
- char cpuid_vendor[13];
- unsigned cpuid_max = 0, cpuid_eax, cpuid_ebx, cpuid_ecx, cpuid_edx;
- unsigned true_dos_version = _get_dos_version (1);
- unsigned advertized_dos_version = ((unsigned int)_osmajor << 8) | _osminor;
- int dpmi_flags;
- char dpmi_vendor_info[129];
- int dpmi_vendor_available =
- __dpmi_get_capabilities (&dpmi_flags, dpmi_vendor_info);
- __dpmi_version_ret dpmi_version_data;
- long eflags;
- __dpmi_free_mem_info mem_info;
- __dpmi_regs regs;
-
- cpuid_vendor[0] = '\0';
- if (uname (&u))
- strcpy (u.machine, "Unknown x86");
- else if (u.machine[0] == 'i' && u.machine[1] > 4)
- {
- /* CPUID with EAX = 0 returns the Vendor ID. */
- __asm__ __volatile__ ("xorl %%ebx, %%ebx;"
- "xorl %%ecx, %%ecx;"
- "xorl %%edx, %%edx;"
- "movl $0, %%eax;"
- "cpuid;"
- "movl %%ebx, %0;"
- "movl %%edx, %1;"
- "movl %%ecx, %2;"
- "movl %%eax, %3;"
- : "=m" (cpuid_vendor[0]),
- "=m" (cpuid_vendor[4]),
- "=m" (cpuid_vendor[8]),
- "=m" (cpuid_max)
- :
- : "%eax", "%ebx", "%ecx", "%edx");
- cpuid_vendor[12] = '\0';
- }
-
- printf_filtered ("CPU Type.......................%s", u.machine);
- if (cpuid_vendor[0])
- printf_filtered (" (%s)", cpuid_vendor);
- puts_filtered ("\n");
-
- /* CPUID with EAX = 1 returns processor signature and features. */
- if (cpuid_max >= 1)
- {
- static char *brand_name[] = {
- "",
- " Celeron",
- " III",
- " III Xeon",
- "", "", "", "",
- " 4"
- };
- char cpu_string[80];
- char cpu_brand[20];
- unsigned brand_idx;
- int intel_p = strcmp (cpuid_vendor, "GenuineIntel") == 0;
- int amd_p = strcmp (cpuid_vendor, "AuthenticAMD") == 0;
- unsigned cpu_family, cpu_model;
-
- __asm__ __volatile__ ("movl $1, %%eax;"
- "cpuid;"
- : "=a" (cpuid_eax),
- "=b" (cpuid_ebx),
- "=d" (cpuid_edx)
- :
- : "%ecx");
- brand_idx = cpuid_ebx & 0xff;
- cpu_family = (cpuid_eax >> 8) & 0xf;
- cpu_model = (cpuid_eax >> 4) & 0xf;
- cpu_brand[0] = '\0';
- if (intel_p)
- {
- if (brand_idx > 0
- && brand_idx < sizeof(brand_name)/sizeof(brand_name[0])
- && *brand_name[brand_idx])
- strcpy (cpu_brand, brand_name[brand_idx]);
- else if (cpu_family == 5)
- {
- if (((cpuid_eax >> 12) & 3) == 0 && cpu_model == 4)
- strcpy (cpu_brand, " MMX");
- else if (cpu_model > 1 && ((cpuid_eax >> 12) & 3) == 1)
- strcpy (cpu_brand, " OverDrive");
- else if (cpu_model > 1 && ((cpuid_eax >> 12) & 3) == 2)
- strcpy (cpu_brand, " Dual");
- }
- else if (cpu_family == 6 && cpu_model < 8)
- {
- switch (cpu_model)
- {
- case 1:
- strcpy (cpu_brand, " Pro");
- break;
- case 3:
- strcpy (cpu_brand, " II");
- break;
- case 5:
- strcpy (cpu_brand, " II Xeon");
- break;
- case 6:
- strcpy (cpu_brand, " Celeron");
- break;
- case 7:
- strcpy (cpu_brand, " III");
- break;
- }
- }
- }
- else if (amd_p)
- {
- switch (cpu_family)
- {
- case 4:
- strcpy (cpu_brand, "486/5x86");
- break;
- case 5:
- switch (cpu_model)
- {
- case 0:
- case 1:
- case 2:
- case 3:
- strcpy (cpu_brand, "-K5");
- break;
- case 6:
- case 7:
- strcpy (cpu_brand, "-K6");
- break;
- case 8:
- strcpy (cpu_brand, "-K6-2");
- break;
- case 9:
- strcpy (cpu_brand, "-K6-III");
- break;
- }
- break;
- case 6:
- switch (cpu_model)
- {
- case 1:
- case 2:
- case 4:
- strcpy (cpu_brand, " Athlon");
- break;
- case 3:
- strcpy (cpu_brand, " Duron");
- break;
- }
- break;
- }
- }
- sprintf (cpu_string, "%s%s Model %d Stepping %d",
- intel_p ? "Pentium" : (amd_p ? "AMD" : "ix86"),
- cpu_brand, cpu_model, cpuid_eax & 0xf);
- printfi_filtered (31, "%s\n", cpu_string);
- if (((cpuid_edx & (6 | (0x0d << 23))) != 0)
- || ((cpuid_edx & 1) == 0)
- || (amd_p && (cpuid_edx & (3 << 30)) != 0))
- {
- puts_filtered ("CPU Features...................");
- /* We only list features which might be useful in the DPMI
- environment. */
- if ((cpuid_edx & 1) == 0)
- puts_filtered ("No FPU "); /* it's unusual to not have an FPU */
- if ((cpuid_edx & (1 << 1)) != 0)
- puts_filtered ("VME ");
- if ((cpuid_edx & (1 << 2)) != 0)
- puts_filtered ("DE ");
- if ((cpuid_edx & (1 << 4)) != 0)
- puts_filtered ("TSC ");
- if ((cpuid_edx & (1 << 23)) != 0)
- puts_filtered ("MMX ");
- if ((cpuid_edx & (1 << 25)) != 0)
- puts_filtered ("SSE ");
- if ((cpuid_edx & (1 << 26)) != 0)
- puts_filtered ("SSE2 ");
- if (amd_p)
- {
- if ((cpuid_edx & (1 << 31)) != 0)
- puts_filtered ("3DNow! ");
- if ((cpuid_edx & (1 << 30)) != 0)
- puts_filtered ("3DNow!Ext");
- }
- puts_filtered ("\n");
- }
- }
- puts_filtered ("\n");
- printf_filtered ("DOS Version....................%s %s.%s",
- _os_flavor, u.release, u.version);
- if (true_dos_version != advertized_dos_version)
- printf_filtered (" (disguised as v%d.%d)", _osmajor, _osminor);
- puts_filtered ("\n");
- if (!windows_major)
- go32_get_windows_version ();
- if (windows_major != 0xff)
- {
- const char *windows_flavor;
-
- printf_filtered ("Windows Version................%d.%02d (Windows ",
- windows_major, windows_minor);
- switch (windows_major)
- {
- case 3:
- windows_flavor = "3.X";
- break;
- case 4:
- switch (windows_minor)
- {
- case 0:
- windows_flavor = "95, 95A, or 95B";
- break;
- case 3:
- windows_flavor = "95B OSR2.1 or 95C OSR2.5";
- break;
- case 10:
- windows_flavor = "98 or 98 SE";
- break;
- case 90:
- windows_flavor = "ME";
- break;
- default:
- windows_flavor = "9X";
- break;
- }
- break;
- default:
- windows_flavor = "??";
- break;
- }
- printf_filtered ("%s)\n", windows_flavor);
- }
- else if (true_dos_version == 0x532 && advertized_dos_version == 0x500)
- printf_filtered ("Windows Version................Windows NT or Windows 2000\n");
- puts_filtered ("\n");
- if (dpmi_vendor_available == 0)
- {
- /* The DPMI spec says the vendor string should be ASCIIZ, but
- I don't trust the vendors to follow that... */
- if (!memchr (&dpmi_vendor_info[2], 0, 126))
- dpmi_vendor_info[128] = '\0';
- printf_filtered ("DPMI Host......................%s v%d.%d (capabilities: %#x)\n",
- &dpmi_vendor_info[2],
- (unsigned)dpmi_vendor_info[0],
- (unsigned)dpmi_vendor_info[1],
- ((unsigned)dpmi_flags & 0x7f));
- }
- __dpmi_get_version (&dpmi_version_data);
- printf_filtered ("DPMI Version...................%d.%02d\n",
- dpmi_version_data.major, dpmi_version_data.minor);
- printf_filtered ("DPMI Info......................%s-bit DPMI, with%s Virtual Memory support\n",
- (dpmi_version_data.flags & 1) ? "32" : "16",
- (dpmi_version_data.flags & 4) ? "" : "out");
- printfi_filtered (31, "Interrupts reflected to %s mode\n",
- (dpmi_version_data.flags & 2) ? "V86" : "Real");
- printfi_filtered (31, "Processor type: i%d86\n",
- dpmi_version_data.cpu);
- printfi_filtered (31, "PIC base interrupt: Master: %#x Slave: %#x\n",
- dpmi_version_data.master_pic, dpmi_version_data.slave_pic);
-
- /* a_tss is only initialized when the debuggee is first run. */
- if (prog_has_started)
- {
- __asm__ __volatile__ ("pushfl ; popl %0" : "=g" (eflags));
- printf_filtered ("Protection.....................Ring %d (in %s), with%s I/O protection\n",
- a_tss.tss_cs & 3, (a_tss.tss_cs & 4) ? "LDT" : "GDT",
- (a_tss.tss_cs & 3) > ((eflags >> 12) & 3) ? "" : "out");
- }
- puts_filtered ("\n");
- __dpmi_get_free_memory_information (&mem_info);
- print_mem (mem_info.total_number_of_physical_pages,
- "DPMI Total Physical Memory.....", 1);
- print_mem (mem_info.total_number_of_free_pages,
- "DPMI Free Physical Memory......", 1);
- print_mem (mem_info.size_of_paging_file_partition_in_pages,
- "DPMI Swap Space................", 1);
- print_mem (mem_info.linear_address_space_size_in_pages,
- "DPMI Total Linear Address Size.", 1);
- print_mem (mem_info.free_linear_address_space_in_pages,
- "DPMI Free Linear Address Size..", 1);
- print_mem (mem_info.largest_available_free_block_in_bytes,
- "DPMI Largest Free Memory Block.", 0);
-
- regs.h.ah = 0x48;
- regs.x.bx = 0xffff;
- __dpmi_int (0x21, &regs);
- print_mem (regs.x.bx << 4, "Free DOS Memory................", 0);
- regs.x.ax = 0x5800;
- __dpmi_int (0x21, &regs);
- if ((regs.x.flags & 1) == 0)
- {
- static const char *dos_hilo[] = {
- "Low", "", "", "", "High", "", "", "", "High, then Low"
- };
- static const char *dos_fit[] = {
- "First", "Best", "Last"
- };
- int hilo_idx = (regs.x.ax >> 4) & 0x0f;
- int fit_idx = regs.x.ax & 0x0f;
-
- if (hilo_idx > 8)
- hilo_idx = 0;
- if (fit_idx > 2)
- fit_idx = 0;
- printf_filtered ("DOS Memory Allocation..........%s memory, %s fit\n",
- dos_hilo[hilo_idx], dos_fit[fit_idx]);
- regs.x.ax = 0x5802;
- __dpmi_int (0x21, &regs);
- if ((regs.x.flags & 1) != 0)
- regs.h.al = 0;
- printfi_filtered (31, "UMBs %sin DOS memory chain\n",
- regs.h.al == 0 ? "not " : "");
- }
-}
-
-struct seg_descr {
- unsigned short limit0 __attribute__((packed));
- unsigned short base0 __attribute__((packed));
- unsigned char base1 __attribute__((packed));
- unsigned stype:5 __attribute__((packed));
- unsigned dpl:2 __attribute__((packed));
- unsigned present:1 __attribute__((packed));
- unsigned limit1:4 __attribute__((packed));
- unsigned available:1 __attribute__((packed));
- unsigned dummy:1 __attribute__((packed));
- unsigned bit32:1 __attribute__((packed));
- unsigned page_granular:1 __attribute__((packed));
- unsigned char base2 __attribute__((packed));
-};
-
-struct gate_descr {
- unsigned short offset0 __attribute__((packed));
- unsigned short selector __attribute__((packed));
- unsigned param_count:5 __attribute__((packed));
- unsigned dummy:3 __attribute__((packed));
- unsigned stype:5 __attribute__((packed));
- unsigned dpl:2 __attribute__((packed));
- unsigned present:1 __attribute__((packed));
- unsigned short offset1 __attribute__((packed));
-};
-
-/* Read LEN bytes starting at logical address ADDR, and put the result
- into DEST. Return 1 if success, zero if not. */
-static int
-read_memory_region (unsigned long addr, void *dest, size_t len)
-{
- unsigned long dos_ds_limit = __dpmi_get_segment_limit (_dos_ds);
- int retval = 1;
-
- /* For the low memory, we can simply use _dos_ds. */
- if (addr <= dos_ds_limit - len)
- dosmemget (addr, len, dest);
- else
- {
- /* For memory above 1MB we need to set up a special segment to
- be able to access that memory. */
- int sel = __dpmi_allocate_ldt_descriptors (1);
-
- if (sel <= 0)
- retval = 0;
- else
- {
- int access_rights = __dpmi_get_descriptor_access_rights (sel);
- size_t segment_limit = len - 1;
-
- /* Make sure the crucial bits in the descriptor access
- rights are set correctly. Some DPMI providers might barf
- if we set the segment limit to something that is not an
- integral multiple of 4KB pages if the granularity bit is
- not set to byte-granular, even though the DPMI spec says
- it's the host's responsibility to set that bit correctly. */
- if (len > 1024 * 1024)
- {
- access_rights |= 0x8000;
- /* Page-granular segments should have the low 12 bits of
- the limit set. */
- segment_limit |= 0xfff;
- }
- else
- access_rights &= ~0x8000;
-
- if (__dpmi_set_segment_base_address (sel, addr) != -1
- && __dpmi_set_descriptor_access_rights (sel, access_rights) != -1
- && __dpmi_set_segment_limit (sel, segment_limit) != -1
- /* W2K silently fails to set the segment limit, leaving
- it at zero; this test avoids the resulting crash. */
- && __dpmi_get_segment_limit (sel) >= segment_limit)
- movedata (sel, 0, _my_ds (), (unsigned)dest, len);
- else
- retval = 0;
-
- __dpmi_free_ldt_descriptor (sel);
- }
- }
- return retval;
-}
-
-/* Get a segment descriptor stored at index IDX in the descriptor
- table whose base address is TABLE_BASE. Return the descriptor
- type, or -1 if failure. */
-static int
-get_descriptor (unsigned long table_base, int idx, void *descr)
-{
- unsigned long addr = table_base + idx * 8; /* 8 bytes per entry */
-
- if (read_memory_region (addr, descr, 8))
- return (int)((struct seg_descr *)descr)->stype;
- return -1;
-}
-
-struct dtr_reg {
- unsigned short limit __attribute__((packed));
- unsigned long base __attribute__((packed));
-};
-
-/* Display a segment descriptor stored at index IDX in a descriptor
- table whose type is TYPE and whose base address is BASE_ADDR. If
- FORCE is non-zero, display even invalid descriptors. */
-static void
-display_descriptor (unsigned type, unsigned long base_addr, int idx, int force)
-{
- struct seg_descr descr;
- struct gate_descr gate;
-
- /* Get the descriptor from the table. */
- if (idx == 0 && type == 0)
- puts_filtered ("0x000: null descriptor\n");
- else if (get_descriptor (base_addr, idx, &descr) != -1)
- {
- /* For each type of descriptor table, this has a bit set if the
- corresponding type of selectors is valid in that table. */
- static unsigned allowed_descriptors[] = {
- 0xffffdafeL, /* GDT */
- 0x0000c0e0L, /* IDT */
- 0xffffdafaL /* LDT */
- };
-
- /* If the program hasn't started yet, assume the debuggee will
- have the same CPL as the debugger. */
- int cpl = prog_has_started ? (a_tss.tss_cs & 3) : _my_cs () & 3;
- unsigned long limit = (descr.limit1 << 16) | descr.limit0;
-
- if (descr.present
- && (allowed_descriptors[type] & (1 << descr.stype)) != 0)
- {
- printf_filtered ("0x%03x: ",
- type == 1
- ? idx : (idx * 8) | (type ? (cpl | 4) : 0));
- if (descr.page_granular)
- limit = (limit << 12) | 0xfff; /* big segment: low 12 bit set */
- if (descr.stype == 1 || descr.stype == 2 || descr.stype == 3
- || descr.stype == 9 || descr.stype == 11
- || (descr.stype >= 16 && descr.stype < 32))
- printf_filtered ("base=0x%02x%02x%04x limit=0x%08lx",
- descr.base2, descr.base1, descr.base0, limit);
-
- switch (descr.stype)
- {
- case 1:
- case 3:
- printf_filtered (" 16-bit TSS (task %sactive)",
- descr.stype == 3 ? "" : "in");
- break;
- case 2:
- puts_filtered (" LDT");
- break;
- case 4:
- memcpy (&gate, &descr, sizeof gate);
- printf_filtered ("selector=0x%04x offs=0x%04x%04x",
- gate.selector, gate.offset1, gate.offset0);
- printf_filtered (" 16-bit Call Gate (params=%d)",
- gate.param_count);
- break;
- case 5:
- printf_filtered ("TSS selector=0x%04x", descr.base0);
- printfi_filtered (16, "Task Gate");
- break;
- case 6:
- case 7:
- memcpy (&gate, &descr, sizeof gate);
- printf_filtered ("selector=0x%04x offs=0x%04x%04x",
- gate.selector, gate.offset1, gate.offset0);
- printf_filtered (" 16-bit %s Gate",
- descr.stype == 6 ? "Interrupt" : "Trap");
- break;
- case 9:
- case 11:
- printf_filtered (" 32-bit TSS (task %sactive)",
- descr.stype == 3 ? "" : "in");
- break;
- case 12:
- memcpy (&gate, &descr, sizeof gate);
- printf_filtered ("selector=0x%04x offs=0x%04x%04x",
- gate.selector, gate.offset1, gate.offset0);
- printf_filtered (" 32-bit Call Gate (params=%d)",
- gate.param_count);
- break;
- case 14:
- case 15:
- memcpy (&gate, &descr, sizeof gate);
- printf_filtered ("selector=0x%04x offs=0x%04x%04x",
- gate.selector, gate.offset1, gate.offset0);
- printf_filtered (" 32-bit %s Gate",
- descr.stype == 14 ? "Interrupt" : "Trap");
- break;
- case 16: /* data segments */
- case 17:
- case 18:
- case 19:
- case 20:
- case 21:
- case 22:
- case 23:
- printf_filtered (" %s-bit Data (%s Exp-%s%s)",
- descr.bit32 ? "32" : "16",
- descr.stype & 2 ? "Read/Write," : "Read-Only, ",
- descr.stype & 4 ? "down" : "up",
- descr.stype & 1 ? "" : ", N.Acc");
- break;
- case 24: /* code segments */
- case 25:
- case 26:
- case 27:
- case 28:
- case 29:
- case 30:
- case 31:
- printf_filtered (" %s-bit Code (%s, %sConf%s)",
- descr.bit32 ? "32" : "16",
- descr.stype & 2 ? "Exec/Read" : "Exec-Only",
- descr.stype & 4 ? "" : "N.",
- descr.stype & 1 ? "" : ", N.Acc");
- break;
- default:
- printf_filtered ("Unknown type 0x%02x", descr.stype);
- break;
- }
- puts_filtered ("\n");
- }
- else if (force)
- {
- printf_filtered ("0x%03x: ",
- type == 1
- ? idx : (idx * 8) | (type ? (cpl | 4) : 0));
- if (!descr.present)
- puts_filtered ("Segment not present\n");
- else
- printf_filtered ("Segment type 0x%02x is invalid in this table\n",
- descr.stype);
- }
- }
- else if (force)
- printf_filtered ("0x%03x: Cannot read this descriptor\n", idx);
-}
-
-static void
-go32_sldt (char *arg, int from_tty)
-{
- struct dtr_reg gdtr;
- unsigned short ldtr = 0;
- int ldt_idx;
- struct seg_descr ldt_descr;
- long ldt_entry = -1L;
- int cpl = (prog_has_started ? a_tss.tss_cs : _my_cs ()) & 3;
-
- if (arg && *arg)
- {
- while (*arg && isspace(*arg))
- arg++;
-
- if (*arg)
- {
- ldt_entry = parse_and_eval_long (arg);
- if (ldt_entry < 0
- || (ldt_entry & 4) == 0
- || (ldt_entry & 3) != (cpl & 3))
- error ("Invalid LDT entry 0x%03x.", ldt_entry);
- }
- }
-
- __asm__ __volatile__ ("sgdt %0" : "=m" (gdtr) : /* no inputs */ );
- __asm__ __volatile__ ("sldt %0" : "=m" (ldtr) : /* no inputs */ );
- ldt_idx = ldtr / 8;
- if (ldt_idx == 0)
- puts_filtered ("There is no LDT.\n");
- /* LDT's entry in the GDT must have the type LDT, which is 2. */
- else if (get_descriptor (gdtr.base, ldt_idx, &ldt_descr) != 2)
- printf_filtered ("LDT is present (at %#x), but unreadable by GDB.\n",
- ldt_descr.base0
- | (ldt_descr.base1 << 16)
- | (ldt_descr.base2 << 24));
- else
- {
- unsigned base =
- ldt_descr.base0
- | (ldt_descr.base1 << 16)
- | (ldt_descr.base2 << 24);
- unsigned limit = ldt_descr.limit0 | (ldt_descr.limit1 << 16);
- int max_entry;
-
- if (ldt_descr.page_granular)
- /* Page-granular segments must have the low 12 bits of their
- limit set. */
- limit = (limit << 12) | 0xfff;
- /* LDT cannot have more than 8K 8-byte entries, i.e. more than
- 64KB. */
- if (limit > 0xffff)
- limit = 0xffff;
-
- max_entry = (limit + 1) / 8;
-
- if (ldt_entry >= 0)
- {
- if (ldt_entry > limit)
- error ("Invalid LDT entry %#x: outside valid limits [0..%#x]",
- ldt_entry, limit);
-
- display_descriptor (ldt_descr.stype, base, ldt_entry / 8, 1);
- }
- else
- {
- int i;
-
- for (i = 0; i < max_entry; i++)
- display_descriptor (ldt_descr.stype, base, i, 0);
- }
- }
-}
-
-static void
-go32_sgdt (char *arg, int from_tty)
-{
- struct dtr_reg gdtr;
- long gdt_entry = -1L;
- int max_entry;
-
- if (arg && *arg)
- {
- while (*arg && isspace(*arg))
- arg++;
-
- if (*arg)
- {
- gdt_entry = parse_and_eval_long (arg);
- if (gdt_entry < 0 || (gdt_entry & 7) != 0)
- error ("Invalid GDT entry 0x%03x: not an integral multiple of 8.",
- gdt_entry);
- }
- }
-
- __asm__ __volatile__ ("sgdt %0" : "=m" (gdtr) : /* no inputs */ );
- max_entry = (gdtr.limit + 1) / 8;
-
- if (gdt_entry >= 0)
- {
- if (gdt_entry > gdtr.limit)
- error ("Invalid GDT entry %#x: outside valid limits [0..%#x]",
- gdt_entry, gdtr.limit);
-
- display_descriptor (0, gdtr.base, gdt_entry / 8, 1);
- }
- else
- {
- int i;
-
- for (i = 0; i < max_entry; i++)
- display_descriptor (0, gdtr.base, i, 0);
- }
-}
-
-static void
-go32_sidt (char *arg, int from_tty)
-{
- struct dtr_reg idtr;
- long idt_entry = -1L;
- int max_entry;
-
- if (arg && *arg)
- {
- while (*arg && isspace(*arg))
- arg++;
-
- if (*arg)
- {
- idt_entry = parse_and_eval_long (arg);
- if (idt_entry < 0)
- error ("Invalid (negative) IDT entry %d.", idt_entry);
- }
- }
-
- __asm__ __volatile__ ("sidt %0" : "=m" (idtr) : /* no inputs */ );
- max_entry = (idtr.limit + 1) / 8;
- if (max_entry > 0x100) /* no more than 256 entries */
- max_entry = 0x100;
-
- if (idt_entry >= 0)
- {
- if (idt_entry > idtr.limit)
- error ("Invalid IDT entry %#x: outside valid limits [0..%#x]",
- idt_entry, idtr.limit);
-
- display_descriptor (1, idtr.base, idt_entry, 1);
- }
- else
- {
- int i;
-
- for (i = 0; i < max_entry; i++)
- display_descriptor (1, idtr.base, i, 0);
- }
-}
-
-/* Cached linear address of the base of the page directory. For
- now, available only under CWSDPMI. Code based on ideas and
- suggestions from Charles Sandmann <sandmann@clio.rice.edu>. */
-static unsigned long pdbr;
-
-static unsigned long
-get_cr3 (void)
-{
- unsigned offset;
- unsigned taskreg;
- unsigned long taskbase, cr3;
- struct dtr_reg gdtr;
-
- if (pdbr > 0 && pdbr <= 0xfffff)
- return pdbr;
-
- /* Get the linear address of GDT and the Task Register. */
- __asm__ __volatile__ ("sgdt %0" : "=m" (gdtr) : /* no inputs */ );
- __asm__ __volatile__ ("str %0" : "=m" (taskreg) : /* no inputs */ );
-
- /* Task Register is a segment selector for the TSS of the current
- task. Therefore, it can be used as an index into the GDT to get
- at the segment descriptor for the TSS. To get the index, reset
- the low 3 bits of the selector (which give the CPL). Add 2 to the
- offset to point to the 3 low bytes of the base address. */
- offset = gdtr.base + (taskreg & 0xfff8) + 2;
-
-
- /* CWSDPMI's task base is always under the 1MB mark. */
- if (offset > 0xfffff)
- return 0;
-
- _farsetsel (_dos_ds);
- taskbase = _farnspeekl (offset) & 0xffffffU;
- taskbase += _farnspeekl (offset + 2) & 0xff000000U;
- if (taskbase > 0xfffff)
- return 0;
-
- /* CR3 (a.k.a. PDBR, the Page Directory Base Register) is stored at
- offset 1Ch in the TSS. */
- cr3 = _farnspeekl (taskbase + 0x1c) & ~0xfff;
- if (cr3 > 0xfffff)
- {
-#if 0 /* not fullly supported yet */
- /* The Page Directory is in UMBs. In that case, CWSDPMI puts
- the first Page Table right below the Page Directory. Thus,
- the first Page Table's entry for its own address and the Page
- Directory entry for that Page Table will hold the same
- physical address. The loop below searches the entire UMB
- range of addresses for such an occurence. */
- unsigned long addr, pte_idx;
-
- for (addr = 0xb0000, pte_idx = 0xb0;
- pte_idx < 0xff;
- addr += 0x1000, pte_idx++)
- {
- if (((_farnspeekl (addr + 4 * pte_idx) & 0xfffff027) ==
- (_farnspeekl (addr + 0x1000) & 0xfffff027))
- && ((_farnspeekl (addr + 4 * pte_idx + 4) & 0xfffff000) == cr3))
- {
- cr3 = addr + 0x1000;
- break;
- }
- }
-#endif
-
- if (cr3 > 0xfffff)
- cr3 = 0;
- }
-
- return cr3;
-}
-
-/* Return the N'th Page Directory entry. */
-static unsigned long
-get_pde (int n)
-{
- unsigned long pde = 0;
-
- if (pdbr && n >= 0 && n < 1024)
- {
- pde = _farpeekl (_dos_ds, pdbr + 4*n);
- }
- return pde;
-}
-
-/* Return the N'th entry of the Page Table whose Page Directory entry
- is PDE. */
-static unsigned long
-get_pte (unsigned long pde, int n)
-{
- unsigned long pte = 0;
-
- /* pde & 0x80 tests the 4MB page bit. We don't support 4MB
- page tables, for now. */
- if ((pde & 1) && !(pde & 0x80) && n >= 0 && n < 1024)
- {
- pde &= ~0xfff; /* clear non-address bits */
- pte = _farpeekl (_dos_ds, pde + 4*n);
- }
- return pte;
-}
-
-/* Display a Page Directory or Page Table entry. IS_DIR, if non-zero,
- says this is a Page Directory entry. If FORCE is non-zero, display
- the entry even if its Present flag is off. OFF is the offset of the
- address from the page's base address. */
-static void
-display_ptable_entry (unsigned long entry, int is_dir, int force, unsigned off)
-{
- if ((entry & 1) != 0)
- {
- printf_filtered ("Base=0x%05lx000", entry >> 12);
- if ((entry & 0x100) && !is_dir)
- puts_filtered (" Global");
- if ((entry & 0x40) && !is_dir)
- puts_filtered (" Dirty");
- printf_filtered (" %sAcc.", (entry & 0x20) ? "" : "Not-");
- printf_filtered (" %sCached", (entry & 0x10) ? "" : "Not-");
- printf_filtered (" Write-%s", (entry & 8) ? "Thru" : "Back");
- printf_filtered (" %s", (entry & 4) ? "Usr" : "Sup");
- printf_filtered (" Read-%s", (entry & 2) ? "Write" : "Only");
- if (off)
- printf_filtered (" +0x%x", off);
- puts_filtered ("\n");
- }
- else if (force)
- printf_filtered ("Page%s not present or not supported; value=0x%lx.\n",
- is_dir ? " Table" : "", entry >> 1);
-}
-
-static void
-go32_pde (char *arg, int from_tty)
-{
- long pde_idx = -1, i;
-
- if (arg && *arg)
- {
- while (*arg && isspace(*arg))
- arg++;
-
- if (*arg)
- {
- pde_idx = parse_and_eval_long (arg);
- if (pde_idx < 0 || pde_idx >= 1024)
- error ("Entry %ld is outside valid limits [0..1023].", pde_idx);
- }
- }
-
- pdbr = get_cr3 ();
- if (!pdbr)
- puts_filtered ("Access to Page Directories is not supported on this system.\n");
- else if (pde_idx >= 0)
- display_ptable_entry (get_pde (pde_idx), 1, 1, 0);
- else
- for (i = 0; i < 1024; i++)
- display_ptable_entry (get_pde (i), 1, 0, 0);
-}
-
-/* A helper function to display entries in a Page Table pointed to by
- the N'th entry in the Page Directory. If FORCE is non-zero, say
- something even if the Page Table is not accessible. */
-static void
-display_page_table (long n, int force)
-{
- unsigned long pde = get_pde (n);
-
- if ((pde & 1) != 0)
- {
- int i;
-
- printf_filtered ("Page Table pointed to by Page Directory entry 0x%lx:\n", n);
- for (i = 0; i < 1024; i++)
- display_ptable_entry (get_pte (pde, i), 0, 0, 0);
- puts_filtered ("\n");
- }
- else if (force)
- printf_filtered ("Page Table not present; value=0x%lx.\n", pde >> 1);
-}
-
-static void
-go32_pte (char *arg, int from_tty)
-{
- long pde_idx = -1, i;
-
- if (arg && *arg)
- {
- while (*arg && isspace(*arg))
- arg++;
-
- if (*arg)
- {
- pde_idx = parse_and_eval_long (arg);
- if (pde_idx < 0 || pde_idx >= 1024)
- error ("Entry %d is outside valid limits [0..1023].", pde_idx);
- }
- }
-
- pdbr = get_cr3 ();
- if (!pdbr)
- puts_filtered ("Access to Page Tables is not supported on this system.\n");
- else if (pde_idx >= 0)
- display_page_table (pde_idx, 1);
- else
- for (i = 0; i < 1024; i++)
- display_page_table (i, 0);
-}
-
-static void
-go32_pte_for_address (char *arg, int from_tty)
-{
- CORE_ADDR addr = 0, i;
-
- if (arg && *arg)
- {
- while (*arg && isspace(*arg))
- arg++;
-
- if (*arg)
- addr = parse_and_eval_address (arg);
- }
- if (!addr)
- error_no_arg ("linear address");
-
- pdbr = get_cr3 ();
- if (!pdbr)
- puts_filtered ("Access to Page Tables is not supported on this system.\n");
- else
- {
- int pde_idx = (addr >> 22) & 0x3ff;
- int pte_idx = (addr >> 12) & 0x3ff;
- unsigned offs = addr & 0xfff;
-
- printf_filtered ("Page Table entry for address 0x%llx:\n",
- (unsigned long long)addr);
- display_ptable_entry (get_pte (get_pde (pde_idx), pte_idx), 0, 1, offs);
- }
-}
-
-static struct cmd_list_element *info_dos_cmdlist = NULL;
-
-static void
-go32_info_dos_command (char *args, int from_tty)
-{
- help_list (info_dos_cmdlist, "info dos ", class_info, gdb_stdout);
-}
-
-void
-_initialize_go32_nat (void)
-{
- init_go32_ops ();
- add_target (&go32_ops);
-
- add_prefix_cmd ("dos", class_info, go32_info_dos_command,
- "Print information specific to DJGPP (aka MS-DOS) debugging.",
- &info_dos_cmdlist, "info dos ", 0, &infolist);
-
- add_cmd ("sysinfo", class_info, go32_sysinfo,
- "Display information about the target system, including CPU, OS, DPMI, etc.",
- &info_dos_cmdlist);
- add_cmd ("ldt", class_info, go32_sldt,
- "Display entries in the LDT (Local Descriptor Table).\n"
- "Entry number (an expression) as an argument means display only that entry.",
- &info_dos_cmdlist);
- add_cmd ("gdt", class_info, go32_sgdt,
- "Display entries in the GDT (Global Descriptor Table).\n"
- "Entry number (an expression) as an argument means display only that entry.",
- &info_dos_cmdlist);
- add_cmd ("idt", class_info, go32_sidt,
- "Display entries in the IDT (Interrupt Descriptor Table).\n"
- "Entry number (an expression) as an argument means display only that entry.",
- &info_dos_cmdlist);
- add_cmd ("pde", class_info, go32_pde,
- "Display entries in the Page Directory.\n"
- "Entry number (an expression) as an argument means display only that entry.",
- &info_dos_cmdlist);
- add_cmd ("pte", class_info, go32_pte,
- "Display entries in Page Tables.\n"
- "Entry number (an expression) as an argument means display only entries\n"
- "from the Page Table pointed to by the specified Page Directory entry.",
- &info_dos_cmdlist);
- add_cmd ("address-pte", class_info, go32_pte_for_address,
- "Display a Page Table entry for a linear address.\n"
- "The address argument must be a linear address, after adding to\n"
- "it the base address of the appropriate segment.\n"
- "The base address of variables and functions in the debuggee's data\n"
- "or code segment is stored in the variable __djgpp_base_address,\n"
- "so use `__djgpp_base_address + (char *)&var' as the argument.\n"
- "For other segments, look up their base address in the output of\n"
- "the `info dos ldt' command.",
- &info_dos_cmdlist);
-}
-
-pid_t
-tcgetpgrp (int fd)
-{
- if (isatty (fd))
- return SOME_PID;
- errno = ENOTTY;
- return -1;
-}
-
-int
-tcsetpgrp (int fd, pid_t pgid)
-{
- if (isatty (fd) && pgid == SOME_PID)
- return 0;
- errno = pgid == SOME_PID ? ENOTTY : ENOSYS;
- return -1;
-}