This commit was manufactured by cvs2svn to create branchsid-20020905-branchpoint sid-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
author: nobody <> 2002-09-07 00:00:05 +0000
committer: nobody <> 2002-09-07 00:00:05 +0000
commit: c1aa2a27e755c883b5c49b223120dfb712ea4e28 (patch)
tree: a98633075cd1f2b034b49446e83e522708d11f68 /gdb/infrun.c
parent: 2e3c0e2427295c9cc09a8a707dfba38d50e2ba30 (diff)
download: gdb-sid-20020905-branch.zip
gdb-sid-20020905-branch.tar.gz
gdb-sid-20020905-branch.tar.bz2
1 files changed, 0 insertions, 4317 deletions
diff --git a/gdb/infrun.c b/gdb/infrun.c
deleted file mode 100644
index b6c2342..0000000
--- a/gdb/infrun.c
+++ /dev/null
@@ -1,4317 +0,0 @@
-/* Target-struct-independent code to start (run) and stop an inferior
-   process.
-
-   Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
-   1995, 1996, 1997, 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 "defs.h"
-#include "gdb_string.h"
-#include <ctype.h>
-#include "symtab.h"
-#include "frame.h"
-#include "inferior.h"
-#include "breakpoint.h"
-#include "gdb_wait.h"
-#include "gdbcore.h"
-#include "gdbcmd.h"
-#include "cli/cli-script.h"
-#include "target.h"
-#include "gdbthread.h"
-#include "annotate.h"
-#include "symfile.h"
-#include "top.h"
-#include <signal.h>
-#include "inf-loop.h"
-#include "regcache.h"
-#include "value.h"
-
-/* Prototypes for local functions */
-
-static void signals_info (char *, int);
-
-static void handle_command (char *, int);
-
-static void sig_print_info (enum target_signal);
-
-static void sig_print_header (void);
-
-static void resume_cleanups (void *);
-
-static int hook_stop_stub (void *);
-
-static void delete_breakpoint_current_contents (void *);
-
-static void set_follow_fork_mode_command (char *arg, int from_tty,
-					  struct cmd_list_element *c);
-
-static int restore_selected_frame (void *);
-
-static void build_infrun (void);
-
-static void follow_inferior_fork (int parent_pid, int child_pid,
-				  int has_forked, int has_vforked);
-
-static void follow_fork (int parent_pid, int child_pid);
-
-static void follow_vfork (int parent_pid, int child_pid);
-
-static void set_schedlock_func (char *args, int from_tty,
-				struct cmd_list_element *c);
-
-struct execution_control_state;
-
-static int currently_stepping (struct execution_control_state *ecs);
-
-static void xdb_handle_command (char *args, int from_tty);
-
-void _initialize_infrun (void);
-
-int inferior_ignoring_startup_exec_events = 0;
-int inferior_ignoring_leading_exec_events = 0;
-
-/* When set, stop the 'step' command if we enter a function which has
-   no line number information.  The normal behavior is that we step
-   over such function.  */
-int step_stop_if_no_debug = 0;
-
-/* In asynchronous mode, but simulating synchronous execution. */
-
-int sync_execution = 0;
-
-/* wait_for_inferior and normal_stop use this to notify the user
-   when the inferior stopped in a different thread than it had been
-   running in.  */
-
-static ptid_t previous_inferior_ptid;
-
-/* This is true for configurations that may follow through execl() and
-   similar functions.  At present this is only true for HP-UX native.  */
-
-#ifndef MAY_FOLLOW_EXEC
-#define MAY_FOLLOW_EXEC (0)
-#endif
-
-static int may_follow_exec = MAY_FOLLOW_EXEC;
-
-/* Dynamic function trampolines are similar to solib trampolines in that they
-   are between the caller and the callee.  The difference is that when you
-   enter a dynamic trampoline, you can't determine the callee's address.  Some
-   (usually complex) code needs to run in the dynamic trampoline to figure out
-   the callee's address.  This macro is usually called twice.  First, when we
-   enter the trampoline (looks like a normal function call at that point).  It
-   should return the PC of a point within the trampoline where the callee's
-   address is known.  Second, when we hit the breakpoint, this routine returns
-   the callee's address.  At that point, things proceed as per a step resume
-   breakpoint.  */
-
-#ifndef DYNAMIC_TRAMPOLINE_NEXTPC
-#define DYNAMIC_TRAMPOLINE_NEXTPC(pc) 0
-#endif
-
-/* If the program uses ELF-style shared libraries, then calls to
-   functions in shared libraries go through stubs, which live in a
-   table called the PLT (Procedure Linkage Table).  The first time the
-   function is called, the stub sends control to the dynamic linker,
-   which looks up the function's real address, patches the stub so
-   that future calls will go directly to the function, and then passes
-   control to the function.
-
-   If we are stepping at the source level, we don't want to see any of
-   this --- we just want to skip over the stub and the dynamic linker.
-   The simple approach is to single-step until control leaves the
-   dynamic linker.
-
-   However, on some systems (e.g., Red Hat's 5.2 distribution) the
-   dynamic linker calls functions in the shared C library, so you
-   can't tell from the PC alone whether the dynamic linker is still
-   running.  In this case, we use a step-resume breakpoint to get us
-   past the dynamic linker, as if we were using "next" to step over a
-   function call.
-
-   IN_SOLIB_DYNSYM_RESOLVE_CODE says whether we're in the dynamic
-   linker code or not.  Normally, this means we single-step.  However,
-   if SKIP_SOLIB_RESOLVER then returns non-zero, then its value is an
-   address where we can place a step-resume breakpoint to get past the
-   linker's symbol resolution function.
-
-   IN_SOLIB_DYNSYM_RESOLVE_CODE can generally be implemented in a
-   pretty portable way, by comparing the PC against the address ranges
-   of the dynamic linker's sections.
-
-   SKIP_SOLIB_RESOLVER is generally going to be system-specific, since
-   it depends on internal details of the dynamic linker.  It's usually
-   not too hard to figure out where to put a breakpoint, but it
-   certainly isn't portable.  SKIP_SOLIB_RESOLVER should do plenty of
-   sanity checking.  If it can't figure things out, returning zero and
-   getting the (possibly confusing) stepping behavior is better than
-   signalling an error, which will obscure the change in the
-   inferior's state.  */
-
-#ifndef IN_SOLIB_DYNSYM_RESOLVE_CODE
-#define IN_SOLIB_DYNSYM_RESOLVE_CODE(pc) 0
-#endif
-
-#ifndef SKIP_SOLIB_RESOLVER
-#define SKIP_SOLIB_RESOLVER(pc) 0
-#endif
-
-/* This function returns TRUE if pc is the address of an instruction
-   that lies within the dynamic linker (such as the event hook, or the
-   dld itself).
-
-   This function must be used only when a dynamic linker event has
-   been caught, and the inferior is being stepped out of the hook, or
-   undefined results are guaranteed.  */
-
-#ifndef SOLIB_IN_DYNAMIC_LINKER
-#define SOLIB_IN_DYNAMIC_LINKER(pid,pc) 0
-#endif
-
-/* On MIPS16, a function that returns a floating point value may call
-   a library helper function to copy the return value to a floating point
-   register.  The IGNORE_HELPER_CALL macro returns non-zero if we
-   should ignore (i.e. step over) this function call.  */
-#ifndef IGNORE_HELPER_CALL
-#define IGNORE_HELPER_CALL(pc)	0
-#endif
-
-/* On some systems, the PC may be left pointing at an instruction that  won't
-   actually be executed.  This is usually indicated by a bit in the PSW.  If
-   we find ourselves in such a state, then we step the target beyond the
-   nullified instruction before returning control to the user so as to avoid
-   confusion. */
-
-#ifndef INSTRUCTION_NULLIFIED
-#define INSTRUCTION_NULLIFIED 0
-#endif
-
-/* We can't step off a permanent breakpoint in the ordinary way, because we
-   can't remove it.  Instead, we have to advance the PC to the next
-   instruction.  This macro should expand to a pointer to a function that
-   does that, or zero if we have no such function.  If we don't have a
-   definition for it, we have to report an error.  */
-#ifndef SKIP_PERMANENT_BREAKPOINT
-#define SKIP_PERMANENT_BREAKPOINT (default_skip_permanent_breakpoint)
-static void
-default_skip_permanent_breakpoint (void)
-{
-  error ("\
-The program is stopped at a permanent breakpoint, but GDB does not know\n\
-how to step past a permanent breakpoint on this architecture.  Try using\n\
-a command like `return' or `jump' to continue execution.");
-}
-#endif
-
-
-/* Convert the #defines into values.  This is temporary until wfi control
-   flow is completely sorted out.  */
-
-#ifndef HAVE_STEPPABLE_WATCHPOINT
-#define HAVE_STEPPABLE_WATCHPOINT 0
-#else
-#undef  HAVE_STEPPABLE_WATCHPOINT
-#define HAVE_STEPPABLE_WATCHPOINT 1
-#endif
-
-#ifndef HAVE_NONSTEPPABLE_WATCHPOINT
-#define HAVE_NONSTEPPABLE_WATCHPOINT 0
-#else
-#undef  HAVE_NONSTEPPABLE_WATCHPOINT
-#define HAVE_NONSTEPPABLE_WATCHPOINT 1
-#endif
-
-#ifndef HAVE_CONTINUABLE_WATCHPOINT
-#define HAVE_CONTINUABLE_WATCHPOINT 0
-#else
-#undef  HAVE_CONTINUABLE_WATCHPOINT
-#define HAVE_CONTINUABLE_WATCHPOINT 1
-#endif
-
-#ifndef CANNOT_STEP_HW_WATCHPOINTS
-#define CANNOT_STEP_HW_WATCHPOINTS 0
-#else
-#undef  CANNOT_STEP_HW_WATCHPOINTS
-#define CANNOT_STEP_HW_WATCHPOINTS 1
-#endif
-
-/* Tables of how to react to signals; the user sets them.  */
-
-static unsigned char *signal_stop;
-static unsigned char *signal_print;
-static unsigned char *signal_program;
-
-#define SET_SIGS(nsigs,sigs,flags) \
-  do { \
-    int signum = (nsigs); \
-    while (signum-- > 0) \
-      if ((sigs)[signum]) \
-	(flags)[signum] = 1; \
-  } while (0)
-
-#define UNSET_SIGS(nsigs,sigs,flags) \
-  do { \
-    int signum = (nsigs); \
-    while (signum-- > 0) \
-      if ((sigs)[signum]) \
-	(flags)[signum] = 0; \
-  } while (0)
-
-/* Value to pass to target_resume() to cause all threads to resume */
-
-#define RESUME_ALL (pid_to_ptid (-1))
-
-/* Command list pointer for the "stop" placeholder.  */
-
-static struct cmd_list_element *stop_command;
-
-/* Nonzero if breakpoints are now inserted in the inferior.  */
-
-static int breakpoints_inserted;
-
-/* Function inferior was in as of last step command.  */
-
-static struct symbol *step_start_function;
-
-/* Nonzero if we are expecting a trace trap and should proceed from it.  */
-
-static int trap_expected;
-
-#ifdef SOLIB_ADD
-/* Nonzero if we want to give control to the user when we're notified
-   of shared library events by the dynamic linker.  */
-static int stop_on_solib_events;
-#endif
-
-#ifdef HP_OS_BUG
-/* Nonzero if the next time we try to continue the inferior, it will
-   step one instruction and generate a spurious trace trap.
-   This is used to compensate for a bug in HP-UX.  */
-
-static int trap_expected_after_continue;
-#endif
-
-/* Nonzero means expecting a trace trap
-   and should stop the inferior and return silently when it happens.  */
-
-int stop_after_trap;
-
-/* Nonzero means expecting a trap and caller will handle it themselves.
-   It is used after attach, due to attaching to a process;
-   when running in the shell before the child program has been exec'd;
-   and when running some kinds of remote stuff (FIXME?).  */
-
-int stop_soon_quietly;
-
-/* Nonzero if proceed is being used for a "finish" command or a similar
-   situation when stop_registers should be saved.  */
-
-int proceed_to_finish;
-
-/* Save register contents here when about to pop a stack dummy frame,
-   if-and-only-if proceed_to_finish is set.
-   Thus this contains the return value from the called function (assuming
-   values are returned in a register).  */
-
-struct regcache *stop_registers;
-
-/* Nonzero if program stopped due to error trying to insert breakpoints.  */
-
-static int breakpoints_failed;
-
-/* Nonzero after stop if current stack frame should be printed.  */
-
-static int stop_print_frame;
-
-static struct breakpoint *step_resume_breakpoint = NULL;
-static struct breakpoint *through_sigtramp_breakpoint = NULL;
-
-/* On some platforms (e.g., HP-UX), hardware watchpoints have bad
-   interactions with an inferior that is running a kernel function
-   (aka, a system call or "syscall").  wait_for_inferior therefore
-   may have a need to know when the inferior is in a syscall.  This
-   is a count of the number of inferior threads which are known to
-   currently be running in a syscall. */
-static int number_of_threads_in_syscalls;
-
-/* This is a cached copy of the pid/waitstatus of the last event
-   returned by target_wait()/target_wait_hook().  This information is
-   returned by get_last_target_status(). */
-static ptid_t target_last_wait_ptid;
-static struct target_waitstatus target_last_waitstatus;
-
-/* This is used to remember when a fork, vfork or exec event
-   was caught by a catchpoint, and thus the event is to be
-   followed at the next resume of the inferior, and not
-   immediately. */
-static struct
-{
-  enum target_waitkind kind;
-  struct
-  {
-    int parent_pid;
-    int saw_parent_fork;
-    int child_pid;
-    int saw_child_fork;
-    int saw_child_exec;
-  }
-  fork_event;
-  char *execd_pathname;
-}
-pending_follow;
-
-/* Some platforms don't allow us to do anything meaningful with a
-   vforked child until it has exec'd.  Vforked processes on such
-   platforms can only be followed after they've exec'd.
-
-   When this is set to 0, a vfork can be immediately followed,
-   and an exec can be followed merely as an exec.  When this is
-   set to 1, a vfork event has been seen, but cannot be followed
-   until the exec is seen.
-
-   (In the latter case, inferior_ptid is still the parent of the
-   vfork, and pending_follow.fork_event.child_pid is the child.  The
-   appropriate process is followed, according to the setting of
-   follow-fork-mode.) */
-static int follow_vfork_when_exec;
-
-static const char follow_fork_mode_ask[] = "ask";
-static const char follow_fork_mode_both[] = "both";
-static const char follow_fork_mode_child[] = "child";
-static const char follow_fork_mode_parent[] = "parent";
-
-static const char *follow_fork_mode_kind_names[] = {
-  follow_fork_mode_ask,
-  /* ??rehrauer: The "both" option is broken, by what may be a 10.20
-     kernel problem.  It's also not terribly useful without a GUI to
-     help the user drive two debuggers.  So for now, I'm disabling the
-     "both" option. */
-  /* follow_fork_mode_both, */
-  follow_fork_mode_child,
-  follow_fork_mode_parent,
-  NULL
-};
-
-static const char *follow_fork_mode_string = follow_fork_mode_parent;
-
-
-static void
-follow_inferior_fork (int parent_pid, int child_pid, int has_forked,
-		      int has_vforked)
-{
-  int followed_parent = 0;
-  int followed_child = 0;
-
-  /* Which process did the user want us to follow? */
-  const char *follow_mode = follow_fork_mode_string;
-
-  /* Or, did the user not know, and want us to ask? */
-  if (follow_fork_mode_string == follow_fork_mode_ask)
-    {
-      internal_error (__FILE__, __LINE__,
-		      "follow_inferior_fork: \"ask\" mode not implemented");
-      /* follow_mode = follow_fork_mode_...; */
-    }
-
-  /* If we're to be following the parent, then detach from child_pid.
-     We're already following the parent, so need do nothing explicit
-     for it. */
-  if (follow_mode == follow_fork_mode_parent)
-    {
-      followed_parent = 1;
-
-      /* We're already attached to the parent, by default. */
-
-      /* Before detaching from the child, remove all breakpoints from
-         it.  (This won't actually modify the breakpoint list, but will
-         physically remove the breakpoints from the child.) */
-      if (!has_vforked || !follow_vfork_when_exec)
-	{
-	  detach_breakpoints (child_pid);
-#ifdef SOLIB_REMOVE_INFERIOR_HOOK
-	  SOLIB_REMOVE_INFERIOR_HOOK (child_pid);
-#endif
-	}
-
-      /* Detach from the child. */
-      dont_repeat ();
-
-      target_require_detach (child_pid, "", 1);
-    }
-
-  /* If we're to be following the child, then attach to it, detach
-     from inferior_ptid, and set inferior_ptid to child_pid. */
-  else if (follow_mode == follow_fork_mode_child)
-    {
-      char child_pid_spelling[100];	/* Arbitrary length. */
-
-      followed_child = 1;
-
-      /* Before detaching from the parent, detach all breakpoints from
-         the child.  But only if we're forking, or if we follow vforks
-         as soon as they happen.  (If we're following vforks only when
-         the child has exec'd, then it's very wrong to try to write
-         back the "shadow contents" of inserted breakpoints now -- they
-         belong to the child's pre-exec'd a.out.) */
-      if (!has_vforked || !follow_vfork_when_exec)
-	{
-	  detach_breakpoints (child_pid);
-	}
-
-      /* Before detaching from the parent, remove all breakpoints from it. */
-      remove_breakpoints ();
-
-      /* Also reset the solib inferior hook from the parent. */
-#ifdef SOLIB_REMOVE_INFERIOR_HOOK
-      SOLIB_REMOVE_INFERIOR_HOOK (PIDGET (inferior_ptid));
-#endif
-
-      /* Detach from the parent. */
-      dont_repeat ();
-      target_detach (NULL, 1);
-
-      /* Attach to the child. */
-      inferior_ptid = pid_to_ptid (child_pid);
-      sprintf (child_pid_spelling, "%d", child_pid);
-      dont_repeat ();
-
-      target_require_attach (child_pid_spelling, 1);
-
-      /* Was there a step_resume breakpoint?  (There was if the user
-         did a "next" at the fork() call.)  If so, explicitly reset its
-         thread number.
-
-         step_resumes are a form of bp that are made to be per-thread.
-         Since we created the step_resume bp when the parent process
-         was being debugged, and now are switching to the child process,
-         from the breakpoint package's viewpoint, that's a switch of
-         "threads".  We must update the bp's notion of which thread
-         it is for, or it'll be ignored when it triggers... */
-      if (step_resume_breakpoint && (!has_vforked || !follow_vfork_when_exec))
-	breakpoint_re_set_thread (step_resume_breakpoint);
-
-      /* Reinsert all breakpoints in the child.  (The user may've set
-         breakpoints after catching the fork, in which case those
-         actually didn't get set in the child, but only in the parent.) */
-      if (!has_vforked || !follow_vfork_when_exec)
-	{
-	  breakpoint_re_set ();
-	  insert_breakpoints ();
-	}
-    }
-
-  /* If we're to be following both parent and child, then fork ourselves,
-     and attach the debugger clone to the child. */
-  else if (follow_mode == follow_fork_mode_both)
-    {
-      char pid_suffix[100];	/* Arbitrary length. */
-
-      /* Clone ourselves to follow the child.  This is the end of our
-         involvement with child_pid; our clone will take it from here... */
-      dont_repeat ();
-      target_clone_and_follow_inferior (child_pid, &followed_child);
-      followed_parent = !followed_child;
-
-      /* We continue to follow the parent.  To help distinguish the two
-         debuggers, though, both we and our clone will reset our prompts. */
-      sprintf (pid_suffix, "[%d] ", PIDGET (inferior_ptid));
-      set_prompt (strcat (get_prompt (), pid_suffix));
-    }
-
-  /* The parent and child of a vfork share the same address space.
-     Also, on some targets the order in which vfork and exec events
-     are received for parent in child requires some delicate handling
-     of the events.
-
-     For instance, on ptrace-based HPUX we receive the child's vfork
-     event first, at which time the parent has been suspended by the
-     OS and is essentially untouchable until the child's exit or second
-     exec event arrives.  At that time, the parent's vfork event is
-     delivered to us, and that's when we see and decide how to follow
-     the vfork.  But to get to that point, we must continue the child
-     until it execs or exits.  To do that smoothly, all breakpoints
-     must be removed from the child, in case there are any set between
-     the vfork() and exec() calls.  But removing them from the child
-     also removes them from the parent, due to the shared-address-space
-     nature of a vfork'd parent and child.  On HPUX, therefore, we must
-     take care to restore the bp's to the parent before we continue it.
-     Else, it's likely that we may not stop in the expected place.  (The
-     worst scenario is when the user tries to step over a vfork() call;
-     the step-resume bp must be restored for the step to properly stop
-     in the parent after the call completes!)
-
-     Sequence of events, as reported to gdb from HPUX:
-
-     Parent        Child           Action for gdb to take
-     -------------------------------------------------------
-     1                VFORK               Continue child
-     2                EXEC
-     3                EXEC or EXIT
-     4  VFORK */
-  if (has_vforked)
-    {
-      target_post_follow_vfork (parent_pid,
-				followed_parent, child_pid, followed_child);
-    }
-
-  pending_follow.fork_event.saw_parent_fork = 0;
-  pending_follow.fork_event.saw_child_fork = 0;
-}
-
-static void
-follow_fork (int parent_pid, int child_pid)
-{
-  follow_inferior_fork (parent_pid, child_pid, 1, 0);
-}
-
-
-/* Forward declaration. */
-static void follow_exec (int, char *);
-
-static void
-follow_vfork (int parent_pid, int child_pid)
-{
-  follow_inferior_fork (parent_pid, child_pid, 0, 1);
-
-  /* Did we follow the child?  Had it exec'd before we saw the parent vfork? */
-  if (pending_follow.fork_event.saw_child_exec
-      && (PIDGET (inferior_ptid) == child_pid))
-    {
-      pending_follow.fork_event.saw_child_exec = 0;
-      pending_follow.kind = TARGET_WAITKIND_SPURIOUS;
-      follow_exec (PIDGET (inferior_ptid), pending_follow.execd_pathname);
-      xfree (pending_follow.execd_pathname);
-    }
-}
-
-/* EXECD_PATHNAME is assumed to be non-NULL. */
-
-static void
-follow_exec (int pid, char *execd_pathname)
-{
-  int saved_pid = pid;
-  struct target_ops *tgt;
-
-  if (!may_follow_exec)
-    return;
-
-  /* Did this exec() follow a vfork()?  If so, we must follow the
-     vfork now too.  Do it before following the exec. */
-  if (follow_vfork_when_exec &&
-      (pending_follow.kind == TARGET_WAITKIND_VFORKED))
-    {
-      pending_follow.kind = TARGET_WAITKIND_SPURIOUS;
-      follow_vfork (PIDGET (inferior_ptid),
-		    pending_follow.fork_event.child_pid);
-      follow_vfork_when_exec = 0;
-      saved_pid = PIDGET (inferior_ptid);
-
-      /* Did we follow the parent?  If so, we're done.  If we followed
-         the child then we must also follow its exec(). */
-      if (PIDGET (inferior_ptid) == pending_follow.fork_event.parent_pid)
-	return;
-    }
-
-  /* This is an exec event that we actually wish to pay attention to.
-     Refresh our symbol table to the newly exec'd program, remove any
-     momentary bp's, etc.
-
-     If there are breakpoints, they aren't really inserted now,
-     since the exec() transformed our inferior into a fresh set
-     of instructions.
-
-     We want to preserve symbolic breakpoints on the list, since
-     we have hopes that they can be reset after the new a.out's
-     symbol table is read.
-
-     However, any "raw" breakpoints must be removed from the list
-     (e.g., the solib bp's), since their address is probably invalid
-     now.
-
-     And, we DON'T want to call delete_breakpoints() here, since
-     that may write the bp's "shadow contents" (the instruction
-     value that was overwritten witha TRAP instruction).  Since
-     we now have a new a.out, those shadow contents aren't valid. */
-  update_breakpoints_after_exec ();
-
-  /* If there was one, it's gone now.  We cannot truly step-to-next
-     statement through an exec(). */
-  step_resume_breakpoint = NULL;
-  step_range_start = 0;
-  step_range_end = 0;
-
-  /* If there was one, it's gone now. */
-  through_sigtramp_breakpoint = NULL;
-
-  /* What is this a.out's name? */
-  printf_unfiltered ("Executing new program: %s\n", execd_pathname);
-
-  /* We've followed the inferior through an exec.  Therefore, the
-     inferior has essentially been killed & reborn. */
-
-  /* First collect the run target in effect.  */
-  tgt = find_run_target ();
-  /* If we can't find one, things are in a very strange state...  */
-  if (tgt == NULL)
-    error ("Could find run target to save before following exec");
-
-  gdb_flush (gdb_stdout);
-  target_mourn_inferior ();
-  inferior_ptid = pid_to_ptid (saved_pid);
-  /* Because mourn_inferior resets inferior_ptid. */
-  push_target (tgt);
-
-  /* That a.out is now the one to use. */
-  exec_file_attach (execd_pathname, 0);
-
-  /* And also is where symbols can be found. */
-  symbol_file_add_main (execd_pathname, 0);
-
-  /* Reset the shared library package.  This ensures that we get
-     a shlib event when the child reaches "_start", at which point
-     the dld will have had a chance to initialize the child. */
-#if defined(SOLIB_RESTART)
-  SOLIB_RESTART ();
-#endif
-#ifdef SOLIB_CREATE_INFERIOR_HOOK
-  SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid));
-#endif
-
-  /* Reinsert all breakpoints.  (Those which were symbolic have
-     been reset to the proper address in the new a.out, thanks
-     to symbol_file_command...) */
-  insert_breakpoints ();
-
-  /* The next resume of this inferior should bring it to the shlib
-     startup breakpoints.  (If the user had also set bp's on
-     "main" from the old (parent) process, then they'll auto-
-     matically get reset there in the new process.) */
-}
-
-/* Non-zero if we just simulating a single-step.  This is needed
-   because we cannot remove the breakpoints in the inferior process
-   until after the `wait' in `wait_for_inferior'.  */
-static int singlestep_breakpoints_inserted_p = 0;
-
-
-/* Things to clean up if we QUIT out of resume ().  */
-/* ARGSUSED */
-static void
-resume_cleanups (void *ignore)
-{
-  normal_stop ();
-}
-
-static const char schedlock_off[] = "off";
-static const char schedlock_on[] = "on";
-static const char schedlock_step[] = "step";
-static const char *scheduler_mode = schedlock_off;
-static const char *scheduler_enums[] = {
-  schedlock_off,
-  schedlock_on,
-  schedlock_step,
-  NULL
-};
-
-static void
-set_schedlock_func (char *args, int from_tty, struct cmd_list_element *c)
-{
-  /* NOTE: cagney/2002-03-17: The add_show_from_set() function clones
-     the set command passed as a parameter.  The clone operation will
-     include (BUG?) any ``set'' command callback, if present.
-     Commands like ``info set'' call all the ``show'' command
-     callbacks.  Unfortunatly, for ``show'' commands cloned from
-     ``set'', this includes callbacks belonging to ``set'' commands.
-     Making this worse, this only occures if add_show_from_set() is
-     called after add_cmd_sfunc() (BUG?).  */
-  if (cmd_type (c) == set_cmd)
-    if (!target_can_lock_scheduler)
-      {
-	scheduler_mode = schedlock_off;
-	error ("Target '%s' cannot support this command.", target_shortname);
-      }
-}
-
-
-/* Resume the inferior, but allow a QUIT.  This is useful if the user
-   wants to interrupt some lengthy single-stepping operation
-   (for child processes, the SIGINT goes to the inferior, and so
-   we get a SIGINT random_signal, but for remote debugging and perhaps
-   other targets, that's not true).
-
-   STEP nonzero if we should step (zero to continue instead).
-   SIG is the signal to give the inferior (zero for none).  */
-void
-resume (int step, enum target_signal sig)
-{
-  int should_resume = 1;
-  struct cleanup *old_cleanups = make_cleanup (resume_cleanups, 0);
-  QUIT;
-
-  /* FIXME: calling breakpoint_here_p (read_pc ()) three times! */
-
-
-  /* Some targets (e.g. Solaris x86) have a kernel bug when stepping
-     over an instruction that causes a page fault without triggering
-     a hardware watchpoint. The kernel properly notices that it shouldn't
-     stop, because the hardware watchpoint is not triggered, but it forgets
-     the step request and continues the program normally.
-     Work around the problem by removing hardware watchpoints if a step is
-     requested, GDB will check for a hardware watchpoint trigger after the
-     step anyway.  */
-  if (CANNOT_STEP_HW_WATCHPOINTS && step && breakpoints_inserted)
-    remove_hw_watchpoints ();
-
-
-  /* Normally, by the time we reach `resume', the breakpoints are either
-     removed or inserted, as appropriate.  The exception is if we're sitting
-     at a permanent breakpoint; we need to step over it, but permanent
-     breakpoints can't be removed.  So we have to test for it here.  */
-  if (breakpoint_here_p (read_pc ()) == permanent_breakpoint_here)
-    SKIP_PERMANENT_BREAKPOINT ();
-
-  if (SOFTWARE_SINGLE_STEP_P () && step)
-    {
-      /* Do it the hard way, w/temp breakpoints */
-      SOFTWARE_SINGLE_STEP (sig, 1 /*insert-breakpoints */ );
-      /* ...and don't ask hardware to do it.  */
-      step = 0;
-      /* and do not pull these breakpoints until after a `wait' in
-         `wait_for_inferior' */
-      singlestep_breakpoints_inserted_p = 1;
-    }
-
-  /* Handle any optimized stores to the inferior NOW...  */
-#ifdef DO_DEFERRED_STORES
-  DO_DEFERRED_STORES;
-#endif
-
-  /* If there were any forks/vforks/execs that were caught and are
-     now to be followed, then do so. */
-  switch (pending_follow.kind)
-    {
-    case (TARGET_WAITKIND_FORKED):
-      pending_follow.kind = TARGET_WAITKIND_SPURIOUS;
-      follow_fork (PIDGET (inferior_ptid),
-		   pending_follow.fork_event.child_pid);
-      break;
-
-    case (TARGET_WAITKIND_VFORKED):
-      {
-	int saw_child_exec = pending_follow.fork_event.saw_child_exec;
-
-	pending_follow.kind = TARGET_WAITKIND_SPURIOUS;
-	follow_vfork (PIDGET (inferior_ptid),
-		      pending_follow.fork_event.child_pid);
-
-	/* Did we follow the child, but not yet see the child's exec event?
-	   If so, then it actually ought to be waiting for us; we respond to
-	   parent vfork events.  We don't actually want to resume the child
-	   in this situation; we want to just get its exec event. */
-	if (!saw_child_exec &&
-	    (PIDGET (inferior_ptid) == pending_follow.fork_event.child_pid))
-	  should_resume = 0;
-      }
-      break;
-
-    case (TARGET_WAITKIND_EXECD):
-      /* If we saw a vfork event but couldn't follow it until we saw
-         an exec, then now might be the time! */
-      pending_follow.kind = TARGET_WAITKIND_SPURIOUS;
-      /* follow_exec is called as soon as the exec event is seen. */
-      break;
-
-    default:
-      break;
-    }
-
-  /* Install inferior's terminal modes.  */
-  target_terminal_inferior ();
-
-  if (should_resume)
-    {
-      ptid_t resume_ptid;
-
-      resume_ptid = RESUME_ALL;	/* Default */
-
-      if ((step || singlestep_breakpoints_inserted_p) &&
-	  !breakpoints_inserted && breakpoint_here_p (read_pc ()))
-	{
-	  /* Stepping past a breakpoint without inserting breakpoints.
-	     Make sure only the current thread gets to step, so that
-	     other threads don't sneak past breakpoints while they are
-	     not inserted. */
-
-	  resume_ptid = inferior_ptid;
-	}
-
-      if ((scheduler_mode == schedlock_on) ||
-	  (scheduler_mode == schedlock_step &&
-	   (step || singlestep_breakpoints_inserted_p)))
-	{
-	  /* User-settable 'scheduler' mode requires solo thread resume. */
-	  resume_ptid = inferior_ptid;
-	}
-
-#ifdef CANNOT_STEP_BREAKPOINT
-      /* Most targets can step a breakpoint instruction, thus executing it
-         normally.  But if this one cannot, just continue and we will hit
-         it anyway.  */
-      if (step && breakpoints_inserted && breakpoint_here_p (read_pc ()))
-	step = 0;
-#endif
-      target_resume (resume_ptid, step, sig);
-    }
-
-  discard_cleanups (old_cleanups);
-}
-
-
-/* Clear out all variables saying what to do when inferior is continued.
-   First do this, then set the ones you want, then call `proceed'.  */
-
-void
-clear_proceed_status (void)
-{
-  trap_expected = 0;
-  step_range_start = 0;
-  step_range_end = 0;
-  step_frame_address = 0;
-  step_over_calls = STEP_OVER_UNDEBUGGABLE;
-  stop_after_trap = 0;
-  stop_soon_quietly = 0;
-  proceed_to_finish = 0;
-  breakpoint_proceeded = 1;	/* We're about to proceed... */
-
-  /* Discard any remaining commands or status from previous stop.  */
-  bpstat_clear (&stop_bpstat);
-}
-
-/* Basic routine for continuing the program in various fashions.
-
-   ADDR is the address to resume at, or -1 for resume where stopped.
-   SIGGNAL is the signal to give it, or 0 for none,
-   or -1 for act according to how it stopped.
-   STEP is nonzero if should trap after one instruction.
-   -1 means return after that and print nothing.
-   You should probably set various step_... variables
-   before calling here, if you are stepping.
-
-   You should call clear_proceed_status before calling proceed.  */
-
-void
-proceed (CORE_ADDR addr, enum target_signal siggnal, int step)
-{
-  int oneproc = 0;
-
-  if (step > 0)
-    step_start_function = find_pc_function (read_pc ());
-  if (step < 0)
-    stop_after_trap = 1;
-
-  if (addr == (CORE_ADDR) -1)
-    {
-      /* If there is a breakpoint at the address we will resume at,
-         step one instruction before inserting breakpoints
-         so that we do not stop right away (and report a second
-         hit at this breakpoint).  */
-
-      if (read_pc () == stop_pc && breakpoint_here_p (read_pc ()))
-	oneproc = 1;
-
-#ifndef STEP_SKIPS_DELAY
-#define STEP_SKIPS_DELAY(pc) (0)
-#define STEP_SKIPS_DELAY_P (0)
-#endif
-      /* Check breakpoint_here_p first, because breakpoint_here_p is fast
-         (it just checks internal GDB data structures) and STEP_SKIPS_DELAY
-         is slow (it needs to read memory from the target).  */
-      if (STEP_SKIPS_DELAY_P
-	  && breakpoint_here_p (read_pc () + 4)
-	  && STEP_SKIPS_DELAY (read_pc ()))
-	oneproc = 1;
-    }
-  else
-    {
-      write_pc (addr);
-    }
-
-#ifdef PREPARE_TO_PROCEED
-  /* In a multi-threaded task we may select another thread
-     and then continue or step.
-
-     But if the old thread was stopped at a breakpoint, it
-     will immediately cause another breakpoint stop without
-     any execution (i.e. it will report a breakpoint hit
-     incorrectly).  So we must step over it first.
-
-     PREPARE_TO_PROCEED checks the current thread against the thread
-     that reported the most recent event.  If a step-over is required
-     it returns TRUE and sets the current thread to the old thread. */
-  if (PREPARE_TO_PROCEED (1) && breakpoint_here_p (read_pc ()))
-    {
-      oneproc = 1;
-    }
-
-#endif /* PREPARE_TO_PROCEED */
-
-#ifdef HP_OS_BUG
-  if (trap_expected_after_continue)
-    {
-      /* If (step == 0), a trap will be automatically generated after
-         the first instruction is executed.  Force step one
-         instruction to clear this condition.  This should not occur
-         if step is nonzero, but it is harmless in that case.  */
-      oneproc = 1;
-      trap_expected_after_continue = 0;
-    }
-#endif /* HP_OS_BUG */
-
-  if (oneproc)
-    /* We will get a trace trap after one instruction.
-       Continue it automatically and insert breakpoints then.  */
-    trap_expected = 1;
-  else
-    {
-      insert_breakpoints ();
-      /* If we get here there was no call to error() in 
-	 insert breakpoints -- so they were inserted.  */
-      breakpoints_inserted = 1;
-    }
-
-  if (siggnal != TARGET_SIGNAL_DEFAULT)
-    stop_signal = siggnal;
-  /* If this signal should not be seen by program,
-     give it zero.  Used for debugging signals.  */
-  else if (!signal_program[stop_signal])
-    stop_signal = TARGET_SIGNAL_0;
-
-  annotate_starting ();
-
-  /* Make sure that output from GDB appears before output from the
-     inferior.  */
-  gdb_flush (gdb_stdout);
-
-  /* Resume inferior.  */
-  resume (oneproc || step || bpstat_should_step (), stop_signal);
-
-  /* Wait for it to stop (if not standalone)
-     and in any case decode why it stopped, and act accordingly.  */
-  /* Do this only if we are not using the event loop, or if the target
-     does not support asynchronous execution. */
-  if (!event_loop_p || !target_can_async_p ())
-    {
-      wait_for_inferior ();
-      normal_stop ();
-    }
-}
-
-/* Record the pc and sp of the program the last time it stopped.
-   These are just used internally by wait_for_inferior, but need
-   to be preserved over calls to it and cleared when the inferior
-   is started.  */
-static CORE_ADDR prev_pc;
-static CORE_ADDR prev_func_start;
-static char *prev_func_name;
-
-
-/* Start remote-debugging of a machine over a serial link.  */
-
-void
-start_remote (void)
-{
-  init_thread_list ();
-  init_wait_for_inferior ();
-  stop_soon_quietly = 1;
-  trap_expected = 0;
-
-  /* Always go on waiting for the target, regardless of the mode. */
-  /* FIXME: cagney/1999-09-23: At present it isn't possible to
-     indicate to wait_for_inferior that a target should timeout if
-     nothing is returned (instead of just blocking).  Because of this,
-     targets expecting an immediate response need to, internally, set
-     things up so that the target_wait() is forced to eventually
-     timeout. */
-  /* FIXME: cagney/1999-09-24: It isn't possible for target_open() to
-     differentiate to its caller what the state of the target is after
-     the initial open has been performed.  Here we're assuming that
-     the target has stopped.  It should be possible to eventually have
-     target_open() return to the caller an indication that the target
-     is currently running and GDB state should be set to the same as
-     for an async run. */
-  wait_for_inferior ();
-  normal_stop ();
-}
-
-/* Initialize static vars when a new inferior begins.  */
-
-void
-init_wait_for_inferior (void)
-{
-  /* These are meaningless until the first time through wait_for_inferior.  */
-  prev_pc = 0;
-  prev_func_start = 0;
-  prev_func_name = NULL;
-
-#ifdef HP_OS_BUG
-  trap_expected_after_continue = 0;
-#endif
-  breakpoints_inserted = 0;
-  breakpoint_init_inferior (inf_starting);
-
-  /* Don't confuse first call to proceed(). */
-  stop_signal = TARGET_SIGNAL_0;
-
-  /* The first resume is not following a fork/vfork/exec. */
-  pending_follow.kind = TARGET_WAITKIND_SPURIOUS;	/* I.e., none. */
-  pending_follow.fork_event.saw_parent_fork = 0;
-  pending_follow.fork_event.saw_child_fork = 0;
-  pending_follow.fork_event.saw_child_exec = 0;
-
-  /* See wait_for_inferior's handling of SYSCALL_ENTRY/RETURN events. */
-  number_of_threads_in_syscalls = 0;
-
-  clear_proceed_status ();
-}
-
-static void
-delete_breakpoint_current_contents (void *arg)
-{
-  struct breakpoint **breakpointp = (struct breakpoint **) arg;
-  if (*breakpointp != NULL)
-    {
-      delete_breakpoint (*breakpointp);
-      *breakpointp = NULL;
-    }
-}
-
-/* This enum encodes possible reasons for doing a target_wait, so that
-   wfi can call target_wait in one place.  (Ultimately the call will be
-   moved out of the infinite loop entirely.) */
-
-enum infwait_states
-{
-  infwait_normal_state,
-  infwait_thread_hop_state,
-  infwait_nullified_state,
-  infwait_nonstep_watch_state
-};
-
-/* Why did the inferior stop? Used to print the appropriate messages
-   to the interface from within handle_inferior_event(). */
-enum inferior_stop_reason
-{
-  /* We don't know why. */
-  STOP_UNKNOWN,
-  /* Step, next, nexti, stepi finished. */
-  END_STEPPING_RANGE,
-  /* Found breakpoint. */
-  BREAKPOINT_HIT,
-  /* Inferior terminated by signal. */
-  SIGNAL_EXITED,
-  /* Inferior exited. */
-  EXITED,
-  /* Inferior received signal, and user asked to be notified. */
-  SIGNAL_RECEIVED
-};
-
-/* This structure contains what used to be local variables in
-   wait_for_inferior.  Probably many of them can return to being
-   locals in handle_inferior_event.  */
-
-struct execution_control_state
-{
-  struct target_waitstatus ws;
-  struct target_waitstatus *wp;
-  int another_trap;
-  int random_signal;
-  CORE_ADDR stop_func_start;
-  CORE_ADDR stop_func_end;
-  char *stop_func_name;
-  struct symtab_and_line sal;
-  int remove_breakpoints_on_following_step;
-  int current_line;
-  struct symtab *current_symtab;
-  int handling_longjmp;		/* FIXME */
-  ptid_t ptid;
-  ptid_t saved_inferior_ptid;
-  int update_step_sp;
-  int stepping_through_solib_after_catch;
-  bpstat stepping_through_solib_catchpoints;
-  int enable_hw_watchpoints_after_wait;
-  int stepping_through_sigtramp;
-  int new_thread_event;
-  struct target_waitstatus tmpstatus;
-  enum infwait_states infwait_state;
-  ptid_t waiton_ptid;
-  int wait_some_more;
-};
-
-void init_execution_control_state (struct execution_control_state *ecs);
-
-void handle_inferior_event (struct execution_control_state *ecs);
-
-static void check_sigtramp2 (struct execution_control_state *ecs);
-static void step_into_function (struct execution_control_state *ecs);
-static void step_over_function (struct execution_control_state *ecs);
-static void stop_stepping (struct execution_control_state *ecs);
-static void prepare_to_wait (struct execution_control_state *ecs);
-static void keep_going (struct execution_control_state *ecs);
-static void print_stop_reason (enum inferior_stop_reason stop_reason,
-			       int stop_info);
-
-/* Wait for control to return from inferior to debugger.
-   If inferior gets a signal, we may decide to start it up again
-   instead of returning.  That is why there is a loop in this function.
-   When this function actually returns it means the inferior
-   should be left stopped and GDB should read more commands.  */
-
-void
-wait_for_inferior (void)
-{
-  struct cleanup *old_cleanups;
-  struct execution_control_state ecss;
-  struct execution_control_state *ecs;
-
-  old_cleanups = make_cleanup (delete_step_resume_breakpoint,
-			       &step_resume_breakpoint);
-  make_cleanup (delete_breakpoint_current_contents,
-		&through_sigtramp_breakpoint);
-
-  /* wfi still stays in a loop, so it's OK just to take the address of
-     a local to get the ecs pointer.  */
-  ecs = &ecss;
-
-  /* Fill in with reasonable starting values.  */
-  init_execution_control_state (ecs);
-
-  /* We'll update this if & when we switch to a new thread. */
-  previous_inferior_ptid = inferior_ptid;
-
-  overlay_cache_invalid = 1;
-
-  /* We have to invalidate the registers BEFORE calling target_wait
-     because they can be loaded from the target while in target_wait.
-     This makes remote debugging a bit more efficient for those
-     targets that provide critical registers as part of their normal
-     status mechanism. */
-
-  registers_changed ();
-
-  while (1)
-    {
-      if (target_wait_hook)
-	ecs->ptid = target_wait_hook (ecs->waiton_ptid, ecs->wp);
-      else
-	ecs->ptid = target_wait (ecs->waiton_ptid, ecs->wp);
-
-      /* Now figure out what to do with the result of the result.  */
-      handle_inferior_event (ecs);
-
-      if (!ecs->wait_some_more)
-	break;
-    }
-  do_cleanups (old_cleanups);
-}
-
-/* Asynchronous version of wait_for_inferior. It is called by the
-   event loop whenever a change of state is detected on the file
-   descriptor corresponding to the target. It can be called more than
-   once to complete a single execution command. In such cases we need
-   to keep the state in a global variable ASYNC_ECSS. If it is the
-   last time that this function is called for a single execution
-   command, then report to the user that the inferior has stopped, and
-   do the necessary cleanups. */
-
-struct execution_control_state async_ecss;
-struct execution_control_state *async_ecs;
-
-void
-fetch_inferior_event (void *client_data)
-{
-  static struct cleanup *old_cleanups;
-
-  async_ecs = &async_ecss;
-
-  if (!async_ecs->wait_some_more)
-    {
-      old_cleanups = make_exec_cleanup (delete_step_resume_breakpoint,
-					&step_resume_breakpoint);
-      make_exec_cleanup (delete_breakpoint_current_contents,
-			 &through_sigtramp_breakpoint);
-
-      /* Fill in with reasonable starting values.  */
-      init_execution_control_state (async_ecs);
-
-      /* We'll update this if & when we switch to a new thread. */
-      previous_inferior_ptid = inferior_ptid;
-
-      overlay_cache_invalid = 1;
-
-      /* We have to invalidate the registers BEFORE calling target_wait
-         because they can be loaded from the target while in target_wait.
-         This makes remote debugging a bit more efficient for those
-         targets that provide critical registers as part of their normal
-         status mechanism. */
-
-      registers_changed ();
-    }
-
-  if (target_wait_hook)
-    async_ecs->ptid =
-      target_wait_hook (async_ecs->waiton_ptid, async_ecs->wp);
-  else
-    async_ecs->ptid = target_wait (async_ecs->waiton_ptid, async_ecs->wp);
-
-  /* Now figure out what to do with the result of the result.  */
-  handle_inferior_event (async_ecs);
-
-  if (!async_ecs->wait_some_more)
-    {
-      /* Do only the cleanups that have been added by this
-         function. Let the continuations for the commands do the rest,
-         if there are any. */
-      do_exec_cleanups (old_cleanups);
-      normal_stop ();
-      if (step_multi && stop_step)
-	inferior_event_handler (INF_EXEC_CONTINUE, NULL);
-      else
-	inferior_event_handler (INF_EXEC_COMPLETE, NULL);
-    }
-}
-
-/* Prepare an execution control state for looping through a
-   wait_for_inferior-type loop.  */
-
-void
-init_execution_control_state (struct execution_control_state *ecs)
-{
-  /* ecs->another_trap? */
-  ecs->random_signal = 0;
-  ecs->remove_breakpoints_on_following_step = 0;
-  ecs->handling_longjmp = 0;	/* FIXME */
-  ecs->update_step_sp = 0;
-  ecs->stepping_through_solib_after_catch = 0;
-  ecs->stepping_through_solib_catchpoints = NULL;
-  ecs->enable_hw_watchpoints_after_wait = 0;
-  ecs->stepping_through_sigtramp = 0;
-  ecs->sal = find_pc_line (prev_pc, 0);
-  ecs->current_line = ecs->sal.line;
-  ecs->current_symtab = ecs->sal.symtab;
-  ecs->infwait_state = infwait_normal_state;
-  ecs->waiton_ptid = pid_to_ptid (-1);
-  ecs->wp = &(ecs->ws);
-}
-
-/* Call this function before setting step_resume_breakpoint, as a
-   sanity check.  There should never be more than one step-resume
-   breakpoint per thread, so we should never be setting a new
-   step_resume_breakpoint when one is already active.  */
-static void
-check_for_old_step_resume_breakpoint (void)
-{
-  if (step_resume_breakpoint)
-    warning
-      ("GDB bug: infrun.c (wait_for_inferior): dropping old step_resume breakpoint");
-}
-
-/* Return the cached copy of the last pid/waitstatus returned by
-   target_wait()/target_wait_hook().  The data is actually cached by
-   handle_inferior_event(), which gets called immediately after
-   target_wait()/target_wait_hook().  */
-
-void
-get_last_target_status (ptid_t *ptidp, struct target_waitstatus *status)
-{
-  *ptidp = target_last_wait_ptid;
-  *status = target_last_waitstatus;
-}
-
-/* Switch thread contexts, maintaining "infrun state". */
-
-static void
-context_switch (struct execution_control_state *ecs)
-{
-  /* Caution: it may happen that the new thread (or the old one!)
-     is not in the thread list.  In this case we must not attempt
-     to "switch context", or we run the risk that our context may
-     be lost.  This may happen as a result of the target module
-     mishandling thread creation.  */
-
-  if (in_thread_list (inferior_ptid) && in_thread_list (ecs->ptid))
-    {				/* Perform infrun state context switch: */
-      /* Save infrun state for the old thread.  */
-      save_infrun_state (inferior_ptid, prev_pc,
-			 prev_func_start, prev_func_name,
-			 trap_expected, step_resume_breakpoint,
-			 through_sigtramp_breakpoint, step_range_start,
-			 step_range_end, step_frame_address,
-			 ecs->handling_longjmp, ecs->another_trap,
-			 ecs->stepping_through_solib_after_catch,
-			 ecs->stepping_through_solib_catchpoints,
-			 ecs->stepping_through_sigtramp,
-			 ecs->current_line, ecs->current_symtab, step_sp);
-
-      /* Load infrun state for the new thread.  */
-      load_infrun_state (ecs->ptid, &prev_pc,
-			 &prev_func_start, &prev_func_name,
-			 &trap_expected, &step_resume_breakpoint,
-			 &through_sigtramp_breakpoint, &step_range_start,
-			 &step_range_end, &step_frame_address,
-			 &ecs->handling_longjmp, &ecs->another_trap,
-			 &ecs->stepping_through_solib_after_catch,
-			 &ecs->stepping_through_solib_catchpoints,
-			 &ecs->stepping_through_sigtramp,
-			 &ecs->current_line, &ecs->current_symtab, &step_sp);
-    }
-  inferior_ptid = ecs->ptid;
-}
-
-
-/* Given an execution control state that has been freshly filled in
-   by an event from the inferior, figure out what it means and take
-   appropriate action.  */
-
-void
-handle_inferior_event (struct execution_control_state *ecs)
-{
-  CORE_ADDR tmp;
-  int stepped_after_stopped_by_watchpoint;
-  int sw_single_step_trap_p = 0;
-
-  /* Cache the last pid/waitstatus. */
-  target_last_wait_ptid = ecs->ptid;
-  target_last_waitstatus = *ecs->wp;
-
-  switch (ecs->infwait_state)
-    {
-    case infwait_thread_hop_state:
-      /* Cancel the waiton_ptid. */
-      ecs->waiton_ptid = pid_to_ptid (-1);
-      /* Fall thru to the normal_state case. */
-
-    case infwait_normal_state:
-      /* See comments where a TARGET_WAITKIND_SYSCALL_RETURN event
-         is serviced in this loop, below. */
-      if (ecs->enable_hw_watchpoints_after_wait)
-	{
-	  TARGET_ENABLE_HW_WATCHPOINTS (PIDGET (inferior_ptid));
-	  ecs->enable_hw_watchpoints_after_wait = 0;
-	}
-      stepped_after_stopped_by_watchpoint = 0;
-      break;
-
-    case infwait_nullified_state:
-      break;
-
-    case infwait_nonstep_watch_state:
-      insert_breakpoints ();
-
-      /* FIXME-maybe: is this cleaner than setting a flag?  Does it
-         handle things like signals arriving and other things happening
-         in combination correctly?  */
-      stepped_after_stopped_by_watchpoint = 1;
-      break;
-    }
-  ecs->infwait_state = infwait_normal_state;
-
-  flush_cached_frames ();
-
-  /* If it's a new process, add it to the thread database */
-
-  ecs->new_thread_event = (!ptid_equal (ecs->ptid, inferior_ptid)
-			   && !in_thread_list (ecs->ptid));
-
-  if (ecs->ws.kind != TARGET_WAITKIND_EXITED
-      && ecs->ws.kind != TARGET_WAITKIND_SIGNALLED && ecs->new_thread_event)
-    {
-      add_thread (ecs->ptid);
-
-      ui_out_text (uiout, "[New ");
-      ui_out_text (uiout, target_pid_or_tid_to_str (ecs->ptid));
-      ui_out_text (uiout, "]\n");
-
-#if 0
-      /* NOTE: This block is ONLY meant to be invoked in case of a
-         "thread creation event"!  If it is invoked for any other
-         sort of event (such as a new thread landing on a breakpoint),
-         the event will be discarded, which is almost certainly
-         a bad thing!
-
-         To avoid this, the low-level module (eg. target_wait)
-         should call in_thread_list and add_thread, so that the
-         new thread is known by the time we get here.  */
-
-      /* We may want to consider not doing a resume here in order
-         to give the user a chance to play with the new thread.
-         It might be good to make that a user-settable option.  */
-
-      /* At this point, all threads are stopped (happens
-         automatically in either the OS or the native code).
-         Therefore we need to continue all threads in order to
-         make progress.  */
-
-      target_resume (RESUME_ALL, 0, TARGET_SIGNAL_0);
-      prepare_to_wait (ecs);
-      return;
-#endif
-    }
-
-  switch (ecs->ws.kind)
-    {
-    case TARGET_WAITKIND_LOADED:
-      /* Ignore gracefully during startup of the inferior, as it
-         might be the shell which has just loaded some objects,
-         otherwise add the symbols for the newly loaded objects.  */
-#ifdef SOLIB_ADD
-      if (!stop_soon_quietly)
-	{
-	  /* Remove breakpoints, SOLIB_ADD might adjust
-	     breakpoint addresses via breakpoint_re_set.  */
-	  if (breakpoints_inserted)
-	    remove_breakpoints ();
-
-	  /* Check for any newly added shared libraries if we're
-	     supposed to be adding them automatically.  Switch
-	     terminal for any messages produced by
-	     breakpoint_re_set.  */
-	  target_terminal_ours_for_output ();
-	  SOLIB_ADD (NULL, 0, NULL, auto_solib_add);
-	  target_terminal_inferior ();
-
-	  /* Reinsert breakpoints and continue.  */
-	  if (breakpoints_inserted)
-	    insert_breakpoints ();
-	}
-#endif
-      resume (0, TARGET_SIGNAL_0);
-      prepare_to_wait (ecs);
-      return;
-
-    case TARGET_WAITKIND_SPURIOUS:
-      resume (0, TARGET_SIGNAL_0);
-      prepare_to_wait (ecs);
-      return;
-
-    case TARGET_WAITKIND_EXITED:
-      target_terminal_ours ();	/* Must do this before mourn anyway */
-      print_stop_reason (EXITED, ecs->ws.value.integer);
-
-      /* Record the exit code in the convenience variable $_exitcode, so
-         that the user can inspect this again later.  */
-      set_internalvar (lookup_internalvar ("_exitcode"),
-		       value_from_longest (builtin_type_int,
-					   (LONGEST) ecs->ws.value.integer));
-      gdb_flush (gdb_stdout);
-      target_mourn_inferior ();
-      singlestep_breakpoints_inserted_p = 0;	/*SOFTWARE_SINGLE_STEP_P() */
-      stop_print_frame = 0;
-      stop_stepping (ecs);
-      return;
-
-    case TARGET_WAITKIND_SIGNALLED:
-      stop_print_frame = 0;
-      stop_signal = ecs->ws.value.sig;
-      target_terminal_ours ();	/* Must do this before mourn anyway */
-
-      /* Note: By definition of TARGET_WAITKIND_SIGNALLED, we shouldn't
-         reach here unless the inferior is dead.  However, for years
-         target_kill() was called here, which hints that fatal signals aren't
-         really fatal on some systems.  If that's true, then some changes
-         may be needed. */
-      target_mourn_inferior ();
-
-      print_stop_reason (SIGNAL_EXITED, stop_signal);
-      singlestep_breakpoints_inserted_p = 0;	/*SOFTWARE_SINGLE_STEP_P() */
-      stop_stepping (ecs);
-      return;
-
-      /* The following are the only cases in which we keep going;
-         the above cases end in a continue or goto. */
-    case TARGET_WAITKIND_FORKED:
-      stop_signal = TARGET_SIGNAL_TRAP;
-      pending_follow.kind = ecs->ws.kind;
-
-      /* Ignore fork events reported for the parent; we're only
-         interested in reacting to forks of the child.  Note that
-         we expect the child's fork event to be available if we
-         waited for it now. */
-      if (ptid_equal (inferior_ptid, ecs->ptid))
-	{
-	  pending_follow.fork_event.saw_parent_fork = 1;
-	  pending_follow.fork_event.parent_pid = PIDGET (ecs->ptid);
-	  pending_follow.fork_event.child_pid = ecs->ws.value.related_pid;
-	  prepare_to_wait (ecs);
-	  return;
-	}
-      else
-	{
-	  pending_follow.fork_event.saw_child_fork = 1;
-	  pending_follow.fork_event.child_pid = PIDGET (ecs->ptid);
-	  pending_follow.fork_event.parent_pid = ecs->ws.value.related_pid;
-	}
-
-      stop_pc = read_pc_pid (ecs->ptid);
-      ecs->saved_inferior_ptid = inferior_ptid;
-      inferior_ptid = ecs->ptid;
-      /* The second argument of bpstat_stop_status is meant to help
-         distinguish between a breakpoint trap and a singlestep trap.
-         This is only important on targets where DECR_PC_AFTER_BREAK
-         is non-zero.  The prev_pc test is meant to distinguish between
-         singlestepping a trap instruction, and singlestepping thru a
-         jump to the instruction following a trap instruction. */
-
-      stop_bpstat = bpstat_stop_status (&stop_pc,
-					currently_stepping (ecs) &&
-					prev_pc !=
-					stop_pc - DECR_PC_AFTER_BREAK);
-      ecs->random_signal = !bpstat_explains_signal (stop_bpstat);
-      inferior_ptid = ecs->saved_inferior_ptid;
-      goto process_event_stop_test;
-
-      /* If this a platform which doesn't allow a debugger to touch a
-         vfork'd inferior until after it exec's, then we'd best keep
-         our fingers entirely off the inferior, other than continuing
-         it.  This has the unfortunate side-effect that catchpoints
-         of vforks will be ignored.  But since the platform doesn't
-         allow the inferior be touched at vfork time, there's really
-         little choice. */
-    case TARGET_WAITKIND_VFORKED:
-      stop_signal = TARGET_SIGNAL_TRAP;
-      pending_follow.kind = ecs->ws.kind;
-
-      /* Is this a vfork of the parent?  If so, then give any
-         vfork catchpoints a chance to trigger now.  (It's
-         dangerous to do so if the child canot be touched until
-         it execs, and the child has not yet exec'd.  We probably
-         should warn the user to that effect when the catchpoint
-         triggers...) */
-      if (ptid_equal (ecs->ptid, inferior_ptid))
-	{
-	  pending_follow.fork_event.saw_parent_fork = 1;
-	  pending_follow.fork_event.parent_pid = PIDGET (ecs->ptid);
-	  pending_follow.fork_event.child_pid = ecs->ws.value.related_pid;
-	}
-
-      /* If we've seen the child's vfork event but cannot really touch
-         the child until it execs, then we must continue the child now.
-         Else, give any vfork catchpoints a chance to trigger now. */
-      else
-	{
-	  pending_follow.fork_event.saw_child_fork = 1;
-	  pending_follow.fork_event.child_pid = PIDGET (ecs->ptid);
-	  pending_follow.fork_event.parent_pid = ecs->ws.value.related_pid;
-	  target_post_startup_inferior (pid_to_ptid
-					(pending_follow.fork_event.
-					 child_pid));
-	  follow_vfork_when_exec = !target_can_follow_vfork_prior_to_exec ();
-	  if (follow_vfork_when_exec)
-	    {
-	      target_resume (ecs->ptid, 0, TARGET_SIGNAL_0);
-	      prepare_to_wait (ecs);
-	      return;
-	    }
-	}
-
-      stop_pc = read_pc ();
-      /* The second argument of bpstat_stop_status is meant to help
-         distinguish between a breakpoint trap and a singlestep trap.
-         This is only important on targets where DECR_PC_AFTER_BREAK
-         is non-zero.  The prev_pc test is meant to distinguish between
-         singlestepping a trap instruction, and singlestepping thru a
-         jump to the instruction following a trap instruction. */
-
-      stop_bpstat = bpstat_stop_status (&stop_pc,
-					currently_stepping (ecs) &&
-					prev_pc !=
-					stop_pc - DECR_PC_AFTER_BREAK);
-      ecs->random_signal = !bpstat_explains_signal (stop_bpstat);
-      goto process_event_stop_test;
-
-    case TARGET_WAITKIND_EXECD:
-      stop_signal = TARGET_SIGNAL_TRAP;
-
-      /* Is this a target which reports multiple exec events per actual
-         call to exec()?  (HP-UX using ptrace does, for example.)  If so,
-         ignore all but the last one.  Just resume the exec'r, and wait
-         for the next exec event. */
-      if (inferior_ignoring_leading_exec_events)
-	{
-	  inferior_ignoring_leading_exec_events--;
-	  if (pending_follow.kind == TARGET_WAITKIND_VFORKED)
-	    ENSURE_VFORKING_PARENT_REMAINS_STOPPED (pending_follow.fork_event.
-						    parent_pid);
-	  target_resume (ecs->ptid, 0, TARGET_SIGNAL_0);
-	  prepare_to_wait (ecs);
-	  return;
-	}
-      inferior_ignoring_leading_exec_events =
-	target_reported_exec_events_per_exec_call () - 1;
-
-      pending_follow.execd_pathname =
-	savestring (ecs->ws.value.execd_pathname,
-		    strlen (ecs->ws.value.execd_pathname));
-
-      /* Did inferior_ptid exec, or did a (possibly not-yet-followed)
-         child of a vfork exec?
-
-         ??rehrauer: This is unabashedly an HP-UX specific thing.  On
-         HP-UX, events associated with a vforking inferior come in
-         threes: a vfork event for the child (always first), followed
-         a vfork event for the parent and an exec event for the child.
-         The latter two can come in either order.
-
-         If we get the parent vfork event first, life's good: We follow
-         either the parent or child, and then the child's exec event is
-         a "don't care".
-
-         But if we get the child's exec event first, then we delay
-         responding to it until we handle the parent's vfork.  Because,
-         otherwise we can't satisfy a "catch vfork". */
-      if (pending_follow.kind == TARGET_WAITKIND_VFORKED)
-	{
-	  pending_follow.fork_event.saw_child_exec = 1;
-
-	  /* On some targets, the child must be resumed before
-	     the parent vfork event is delivered.  A single-step
-	     suffices. */
-	  if (RESUME_EXECD_VFORKING_CHILD_TO_GET_PARENT_VFORK ())
-	    target_resume (ecs->ptid, 1, TARGET_SIGNAL_0);
-	  /* We expect the parent vfork event to be available now. */
-	  prepare_to_wait (ecs);
-	  return;
-	}
-
-      /* This causes the eventpoints and symbol table to be reset.  Must
-         do this now, before trying to determine whether to stop. */
-      follow_exec (PIDGET (inferior_ptid), pending_follow.execd_pathname);
-      xfree (pending_follow.execd_pathname);
-
-      stop_pc = read_pc_pid (ecs->ptid);
-      ecs->saved_inferior_ptid = inferior_ptid;
-      inferior_ptid = ecs->ptid;
-      /* The second argument of bpstat_stop_status is meant to help
-         distinguish between a breakpoint trap and a singlestep trap.
-         This is only important on targets where DECR_PC_AFTER_BREAK
-         is non-zero.  The prev_pc test is meant to distinguish between
-         singlestepping a trap instruction, and singlestepping thru a
-         jump to the instruction following a trap instruction. */
-
-      stop_bpstat = bpstat_stop_status (&stop_pc,
-					currently_stepping (ecs) &&
-					prev_pc !=
-					stop_pc - DECR_PC_AFTER_BREAK);
-      ecs->random_signal = !bpstat_explains_signal (stop_bpstat);
-      inferior_ptid = ecs->saved_inferior_ptid;
-      goto process_event_stop_test;
-
-      /* These syscall events are returned on HP-UX, as part of its
-         implementation of page-protection-based "hardware" watchpoints.
-         HP-UX has unfortunate interactions between page-protections and
-         some system calls.  Our solution is to disable hardware watches
-         when a system call is entered, and reenable them when the syscall
-         completes.  The downside of this is that we may miss the precise
-         point at which a watched piece of memory is modified.  "Oh well."
-
-         Note that we may have multiple threads running, which may each
-         enter syscalls at roughly the same time.  Since we don't have a
-         good notion currently of whether a watched piece of memory is
-         thread-private, we'd best not have any page-protections active
-         when any thread is in a syscall.  Thus, we only want to reenable
-         hardware watches when no threads are in a syscall.
-
-         Also, be careful not to try to gather much state about a thread
-         that's in a syscall.  It's frequently a losing proposition. */
-    case TARGET_WAITKIND_SYSCALL_ENTRY:
-      number_of_threads_in_syscalls++;
-      if (number_of_threads_in_syscalls == 1)
-	{
-	  TARGET_DISABLE_HW_WATCHPOINTS (PIDGET (inferior_ptid));
-	}
-      resume (0, TARGET_SIGNAL_0);
-      prepare_to_wait (ecs);
-      return;
-
-      /* Before examining the threads further, step this thread to
-         get it entirely out of the syscall.  (We get notice of the
-         event when the thread is just on the verge of exiting a
-         syscall.  Stepping one instruction seems to get it back
-         into user code.)
-
-         Note that although the logical place to reenable h/w watches
-         is here, we cannot.  We cannot reenable them before stepping
-         the thread (this causes the next wait on the thread to hang).
-
-         Nor can we enable them after stepping until we've done a wait.
-         Thus, we simply set the flag ecs->enable_hw_watchpoints_after_wait
-         here, which will be serviced immediately after the target
-         is waited on. */
-    case TARGET_WAITKIND_SYSCALL_RETURN:
-      target_resume (ecs->ptid, 1, TARGET_SIGNAL_0);
-
-      if (number_of_threads_in_syscalls > 0)
-	{
-	  number_of_threads_in_syscalls--;
-	  ecs->enable_hw_watchpoints_after_wait =
-	    (number_of_threads_in_syscalls == 0);
-	}
-      prepare_to_wait (ecs);
-      return;
-
-    case TARGET_WAITKIND_STOPPED:
-      stop_signal = ecs->ws.value.sig;
-      break;
-
-      /* We had an event in the inferior, but we are not interested
-         in handling it at this level. The lower layers have already
-         done what needs to be done, if anything. This case can
-         occur only when the target is async or extended-async. One
-         of the circumstamces for this to happen is when the
-         inferior produces output for the console. The inferior has
-         not stopped, and we are ignoring the event. */
-    case TARGET_WAITKIND_IGNORE:
-      ecs->wait_some_more = 1;
-      return;
-    }
-
-  /* We may want to consider not doing a resume here in order to give
-     the user a chance to play with the new thread.  It might be good
-     to make that a user-settable option.  */
-
-  /* At this point, all threads are stopped (happens automatically in
-     either the OS or the native code).  Therefore we need to continue
-     all threads in order to make progress.  */
-  if (ecs->new_thread_event)
-    {
-      target_resume (RESUME_ALL, 0, TARGET_SIGNAL_0);
-      prepare_to_wait (ecs);
-      return;
-    }
-
-  stop_pc = read_pc_pid (ecs->ptid);
-
-  /* See if a thread hit a thread-specific breakpoint that was meant for
-     another thread.  If so, then step that thread past the breakpoint,
-     and continue it.  */
-
-  if (stop_signal == TARGET_SIGNAL_TRAP)
-    {
-      /* Check if a regular breakpoint has been hit before checking
-         for a potential single step breakpoint. Otherwise, GDB will
-         not see this breakpoint hit when stepping onto breakpoints.  */
-      if (breakpoints_inserted
-          && breakpoint_here_p (stop_pc - DECR_PC_AFTER_BREAK))
-	{
-	  ecs->random_signal = 0;
-	  if (!breakpoint_thread_match (stop_pc - DECR_PC_AFTER_BREAK,
-					ecs->ptid))
-	    {
-	      int remove_status;
-
-	      /* Saw a breakpoint, but it was hit by the wrong thread.
-	         Just continue. */
-	      if (DECR_PC_AFTER_BREAK)
-		write_pc_pid (stop_pc - DECR_PC_AFTER_BREAK, ecs->ptid);
-
-	      remove_status = remove_breakpoints ();
-	      /* Did we fail to remove breakpoints?  If so, try
-	         to set the PC past the bp.  (There's at least
-	         one situation in which we can fail to remove
-	         the bp's: On HP-UX's that use ttrace, we can't
-	         change the address space of a vforking child
-	         process until the child exits (well, okay, not
-	         then either :-) or execs. */
-	      if (remove_status != 0)
-		{
-		  /* FIXME!  This is obviously non-portable! */
-		  write_pc_pid (stop_pc - DECR_PC_AFTER_BREAK + 4, ecs->ptid);
-		  /* We need to restart all the threads now,
-		   * unles we're running in scheduler-locked mode. 
-		   * Use currently_stepping to determine whether to 
-		   * step or continue.
-		   */
-		  /* FIXME MVS: is there any reason not to call resume()? */
-		  if (scheduler_mode == schedlock_on)
-		    target_resume (ecs->ptid,
-				   currently_stepping (ecs), TARGET_SIGNAL_0);
-		  else
-		    target_resume (RESUME_ALL,
-				   currently_stepping (ecs), TARGET_SIGNAL_0);
-		  prepare_to_wait (ecs);
-		  return;
-		}
-	      else
-		{		/* Single step */
-		  breakpoints_inserted = 0;
-		  if (!ptid_equal (inferior_ptid, ecs->ptid))
-		    context_switch (ecs);
-		  ecs->waiton_ptid = ecs->ptid;
-		  ecs->wp = &(ecs->ws);
-		  ecs->another_trap = 1;
-
-		  ecs->infwait_state = infwait_thread_hop_state;
-		  keep_going (ecs);
-		  registers_changed ();
-		  return;
-		}
-	    }
-	}
-      else if (SOFTWARE_SINGLE_STEP_P () && singlestep_breakpoints_inserted_p)
-        {
-          /* Readjust the stop_pc as it is off by DECR_PC_AFTER_BREAK
-             compared to the value it would have if the system stepping
-             capability was used. This allows the rest of the code in
-             this function to use this address without having to worry
-             whether software single step is in use or not.  */
-          if (DECR_PC_AFTER_BREAK)
-            {
-              stop_pc -= DECR_PC_AFTER_BREAK;
-              write_pc_pid (stop_pc, ecs->ptid);
-            }
-
-          sw_single_step_trap_p = 1;
-          ecs->random_signal = 0;
-        }
-    }
-  else
-    ecs->random_signal = 1;
-
-  /* See if something interesting happened to the non-current thread.  If
-     so, then switch to that thread, and eventually give control back to
-     the user.
-
-     Note that if there's any kind of pending follow (i.e., of a fork,
-     vfork or exec), we don't want to do this now.  Rather, we'll let
-     the next resume handle it. */
-  if (!ptid_equal (ecs->ptid, inferior_ptid) &&
-      (pending_follow.kind == TARGET_WAITKIND_SPURIOUS))
-    {
-      int printed = 0;
-
-      /* If it's a random signal for a non-current thread, notify user
-         if he's expressed an interest. */
-      if (ecs->random_signal && signal_print[stop_signal])
-	{
-/* ??rehrauer: I don't understand the rationale for this code.  If the
-   inferior will stop as a result of this signal, then the act of handling
-   the stop ought to print a message that's couches the stoppage in user
-   terms, e.g., "Stopped for breakpoint/watchpoint".  If the inferior
-   won't stop as a result of the signal -- i.e., if the signal is merely
-   a side-effect of something GDB's doing "under the covers" for the
-   user, such as stepping threads over a breakpoint they shouldn't stop
-   for -- then the message seems to be a serious annoyance at best.
-
-   For now, remove the message altogether. */
-#if 0
-	  printed = 1;
-	  target_terminal_ours_for_output ();
-	  printf_filtered ("\nProgram received signal %s, %s.\n",
-			   target_signal_to_name (stop_signal),
-			   target_signal_to_string (stop_signal));
-	  gdb_flush (gdb_stdout);
-#endif
-	}
-
-      /* If it's not SIGTRAP and not a signal we want to stop for, then
-         continue the thread. */
-
-      if (stop_signal != TARGET_SIGNAL_TRAP && !signal_stop[stop_signal])
-	{
-	  if (printed)
-	    target_terminal_inferior ();
-
-	  /* Clear the signal if it should not be passed.  */
-	  if (signal_program[stop_signal] == 0)
-	    stop_signal = TARGET_SIGNAL_0;
-
-	  target_resume (ecs->ptid, 0, stop_signal);
-	  prepare_to_wait (ecs);
-	  return;
-	}
-
-      /* It's a SIGTRAP or a signal we're interested in.  Switch threads,
-         and fall into the rest of wait_for_inferior().  */
-
-      context_switch (ecs);
-
-      if (context_hook)
-	context_hook (pid_to_thread_id (ecs->ptid));
-
-      flush_cached_frames ();
-    }
-
-  if (SOFTWARE_SINGLE_STEP_P () && singlestep_breakpoints_inserted_p)
-    {
-      /* Pull the single step breakpoints out of the target. */
-      SOFTWARE_SINGLE_STEP (0, 0);
-      singlestep_breakpoints_inserted_p = 0;
-    }
-
-  /* If PC is pointing at a nullified instruction, then step beyond
-     it so that the user won't be confused when GDB appears to be ready
-     to execute it. */
-
-  /*      if (INSTRUCTION_NULLIFIED && currently_stepping (ecs)) */
-  if (INSTRUCTION_NULLIFIED)
-    {
-      registers_changed ();
-      target_resume (ecs->ptid, 1, TARGET_SIGNAL_0);
-
-      /* We may have received a signal that we want to pass to
-         the inferior; therefore, we must not clobber the waitstatus
-         in WS. */
-
-      ecs->infwait_state = infwait_nullified_state;
-      ecs->waiton_ptid = ecs->ptid;
-      ecs->wp = &(ecs->tmpstatus);
-      prepare_to_wait (ecs);
-      return;
-    }
-
-  /* It may not be necessary to disable the watchpoint to stop over
-     it.  For example, the PA can (with some kernel cooperation)
-     single step over a watchpoint without disabling the watchpoint.  */
-  if (HAVE_STEPPABLE_WATCHPOINT && STOPPED_BY_WATCHPOINT (ecs->ws))
-    {
-      resume (1, 0);
-      prepare_to_wait (ecs);
-      return;
-    }
-
-  /* It is far more common to need to disable a watchpoint to step
-     the inferior over it.  FIXME.  What else might a debug
-     register or page protection watchpoint scheme need here?  */
-  if (HAVE_NONSTEPPABLE_WATCHPOINT && STOPPED_BY_WATCHPOINT (ecs->ws))
-    {
-      /* At this point, we are stopped at an instruction which has
-         attempted to write to a piece of memory under control of
-         a watchpoint.  The instruction hasn't actually executed
-         yet.  If we were to evaluate the watchpoint expression
-         now, we would get the old value, and therefore no change
-         would seem to have occurred.
-
-         In order to make watchpoints work `right', we really need
-         to complete the memory write, and then evaluate the
-         watchpoint expression.  The following code does that by
-         removing the watchpoint (actually, all watchpoints and
-         breakpoints), single-stepping the target, re-inserting
-         watchpoints, and then falling through to let normal
-         single-step processing handle proceed.  Since this
-         includes evaluating watchpoints, things will come to a
-         stop in the correct manner.  */
-
-      if (DECR_PC_AFTER_BREAK)
-	write_pc (stop_pc - DECR_PC_AFTER_BREAK);
-
-      remove_breakpoints ();
-      registers_changed ();
-      target_resume (ecs->ptid, 1, TARGET_SIGNAL_0);	/* Single step */
-
-      ecs->waiton_ptid = ecs->ptid;
-      ecs->wp = &(ecs->ws);
-      ecs->infwait_state = infwait_nonstep_watch_state;
-      prepare_to_wait (ecs);
-      return;
-    }
-
-  /* It may be possible to simply continue after a watchpoint.  */
-  if (HAVE_CONTINUABLE_WATCHPOINT)
-    STOPPED_BY_WATCHPOINT (ecs->ws);
-
-  ecs->stop_func_start = 0;
-  ecs->stop_func_end = 0;
-  ecs->stop_func_name = 0;
-  /* Don't care about return value; stop_func_start and stop_func_name
-     will both be 0 if it doesn't work.  */
-  find_pc_partial_function (stop_pc, &ecs->stop_func_name,
-			    &ecs->stop_func_start, &ecs->stop_func_end);
-  ecs->stop_func_start += FUNCTION_START_OFFSET;
-  ecs->another_trap = 0;
-  bpstat_clear (&stop_bpstat);
-  stop_step = 0;
-  stop_stack_dummy = 0;
-  stop_print_frame = 1;
-  ecs->random_signal = 0;
-  stopped_by_random_signal = 0;
-  breakpoints_failed = 0;
-
-  /* Look at the cause of the stop, and decide what to do.
-     The alternatives are:
-     1) break; to really stop and return to the debugger,
-     2) drop through to start up again
-     (set ecs->another_trap to 1 to single step once)
-     3) set ecs->random_signal to 1, and the decision between 1 and 2
-     will be made according to the signal handling tables.  */
-
-  /* First, distinguish signals caused by the debugger from signals
-     that have to do with the program's own actions.
-     Note that breakpoint insns may cause SIGTRAP or SIGILL
-     or SIGEMT, depending on the operating system version.
-     Here we detect when a SIGILL or SIGEMT is really a breakpoint
-     and change it to SIGTRAP.  */
-
-  if (stop_signal == TARGET_SIGNAL_TRAP
-      || (breakpoints_inserted &&
-	  (stop_signal == TARGET_SIGNAL_ILL
-	   || stop_signal == TARGET_SIGNAL_EMT)) || stop_soon_quietly)
-    {
-      if (stop_signal == TARGET_SIGNAL_TRAP && stop_after_trap)
-	{
-	  stop_print_frame = 0;
-	  stop_stepping (ecs);
-	  return;
-	}
-      if (stop_soon_quietly)
-	{
-	  stop_stepping (ecs);
-	  return;
-	}
-
-      /* Don't even think about breakpoints
-         if just proceeded over a breakpoint.
-
-         However, if we are trying to proceed over a breakpoint
-         and end up in sigtramp, then through_sigtramp_breakpoint
-         will be set and we should check whether we've hit the
-         step breakpoint.  */
-      if (stop_signal == TARGET_SIGNAL_TRAP && trap_expected
-	  && through_sigtramp_breakpoint == NULL)
-	bpstat_clear (&stop_bpstat);
-      else
-	{
-	  /* See if there is a breakpoint at the current PC.  */
-
-	  /* The second argument of bpstat_stop_status is meant to help
-	     distinguish between a breakpoint trap and a singlestep trap.
-	     This is only important on targets where DECR_PC_AFTER_BREAK
-	     is non-zero.  The prev_pc test is meant to distinguish between
-	     singlestepping a trap instruction, and singlestepping thru a
-	     jump to the instruction following a trap instruction.
-
-             Therefore, pass TRUE if our reason for stopping is
-             something other than hitting a breakpoint.  We do this by
-             checking that either: we detected earlier a software single
-             step trap or, 1) stepping is going on and 2) we didn't hit
-             a breakpoint in a signal handler without an intervening stop
-             in sigtramp, which is detected by a new stack pointer value
-             below any usual function calling stack adjustments.  */
-	  stop_bpstat =
-            bpstat_stop_status
-              (&stop_pc,
-               sw_single_step_trap_p
-               || (currently_stepping (ecs)
-                   && prev_pc != stop_pc - DECR_PC_AFTER_BREAK
-                   && !(step_range_end
-                        && INNER_THAN (read_sp (), (step_sp - 16)))));
-	  /* Following in case break condition called a
-	     function.  */
-	  stop_print_frame = 1;
-	}
-
-      if (stop_signal == TARGET_SIGNAL_TRAP)
-	ecs->random_signal
-	  = !(bpstat_explains_signal (stop_bpstat)
-	      || trap_expected
-	      || (!CALL_DUMMY_BREAKPOINT_OFFSET_P
-		  && PC_IN_CALL_DUMMY (stop_pc, read_sp (),
-				       FRAME_FP (get_current_frame ())))
-	      || (step_range_end && step_resume_breakpoint == NULL));
-
-      else
-	{
-	  ecs->random_signal = !(bpstat_explains_signal (stop_bpstat)
-				 /* End of a stack dummy.  Some systems (e.g. Sony
-				    news) give another signal besides SIGTRAP, so
-				    check here as well as above.  */
-				 || (!CALL_DUMMY_BREAKPOINT_OFFSET_P
-				     && PC_IN_CALL_DUMMY (stop_pc, read_sp (),
-							  FRAME_FP
-							  (get_current_frame
-							   ()))));
-	  if (!ecs->random_signal)
-	    stop_signal = TARGET_SIGNAL_TRAP;
-	}
-    }
-
-  /* When we reach this point, we've pretty much decided
-     that the reason for stopping must've been a random
-     (unexpected) signal. */
-
-  else
-    ecs->random_signal = 1;
-  /* If a fork, vfork or exec event was seen, then there are two
-     possible responses we can make:
-
-     1. If a catchpoint triggers for the event (ecs->random_signal == 0),
-     then we must stop now and issue a prompt.  We will resume
-     the inferior when the user tells us to.
-     2. If no catchpoint triggers for the event (ecs->random_signal == 1),
-     then we must resume the inferior now and keep checking.
-
-     In either case, we must take appropriate steps to "follow" the
-     the fork/vfork/exec when the inferior is resumed.  For example,
-     if follow-fork-mode is "child", then we must detach from the
-     parent inferior and follow the new child inferior.
-
-     In either case, setting pending_follow causes the next resume()
-     to take the appropriate following action. */
-process_event_stop_test:
-  if (ecs->ws.kind == TARGET_WAITKIND_FORKED)
-    {
-      if (ecs->random_signal)	/* I.e., no catchpoint triggered for this. */
-	{
-	  trap_expected = 1;
-	  stop_signal = TARGET_SIGNAL_0;
-	  keep_going (ecs);
-	  return;
-	}
-    }
-  else if (ecs->ws.kind == TARGET_WAITKIND_VFORKED)
-    {
-      if (ecs->random_signal)	/* I.e., no catchpoint triggered for this. */
-	{
-	  stop_signal = TARGET_SIGNAL_0;
-	  keep_going (ecs);
-	  return;
-	}
-    }
-  else if (ecs->ws.kind == TARGET_WAITKIND_EXECD)
-    {
-      pending_follow.kind = ecs->ws.kind;
-      if (ecs->random_signal)	/* I.e., no catchpoint triggered for this. */
-	{
-	  trap_expected = 1;
-	  stop_signal = TARGET_SIGNAL_0;
-	  keep_going (ecs);
-	  return;
-	}
-    }
-
-  /* For the program's own signals, act according to
-     the signal handling tables.  */
-
-  if (ecs->random_signal)
-    {
-      /* Signal not for debugging purposes.  */
-      int printed = 0;
-
-      stopped_by_random_signal = 1;
-
-      if (signal_print[stop_signal])
-	{
-	  printed = 1;
-	  target_terminal_ours_for_output ();
-	  print_stop_reason (SIGNAL_RECEIVED, stop_signal);
-	}
-      if (signal_stop[stop_signal])
-	{
-	  stop_stepping (ecs);
-	  return;
-	}
-      /* If not going to stop, give terminal back
-         if we took it away.  */
-      else if (printed)
-	target_terminal_inferior ();
-
-      /* Clear the signal if it should not be passed.  */
-      if (signal_program[stop_signal] == 0)
-	stop_signal = TARGET_SIGNAL_0;
-
-      /* I'm not sure whether this needs to be check_sigtramp2 or
-         whether it could/should be keep_going.
-
-         This used to jump to step_over_function if we are stepping,
-         which is wrong.
-
-         Suppose the user does a `next' over a function call, and while
-         that call is in progress, the inferior receives a signal for
-         which GDB does not stop (i.e., signal_stop[SIG] is false).  In
-         that case, when we reach this point, there is already a
-         step-resume breakpoint established, right where it should be:
-         immediately after the function call the user is "next"-ing
-         over.  If we call step_over_function now, two bad things
-         happen:
-
-         - we'll create a new breakpoint, at wherever the current
-         frame's return address happens to be.  That could be
-         anywhere, depending on what function call happens to be on
-         the top of the stack at that point.  Point is, it's probably
-         not where we need it.
-
-         - the existing step-resume breakpoint (which is at the correct
-         address) will get orphaned: step_resume_breakpoint will point
-         to the new breakpoint, and the old step-resume breakpoint
-         will never be cleaned up.
-
-         The old behavior was meant to help HP-UX single-step out of
-         sigtramps.  It would place the new breakpoint at prev_pc, which
-         was certainly wrong.  I don't know the details there, so fixing
-         this probably breaks that.  As with anything else, it's up to
-         the HP-UX maintainer to furnish a fix that doesn't break other
-         platforms.  --JimB, 20 May 1999 */
-      check_sigtramp2 (ecs);
-      keep_going (ecs);
-      return;
-    }
-
-  /* Handle cases caused by hitting a breakpoint.  */
-  {
-    CORE_ADDR jmp_buf_pc;
-    struct bpstat_what what;
-
-    what = bpstat_what (stop_bpstat);
-
-    if (what.call_dummy)
-      {
-	stop_stack_dummy = 1;
-#ifdef HP_OS_BUG
-	trap_expected_after_continue = 1;
-#endif
-      }
-
-    switch (what.main_action)
-      {
-      case BPSTAT_WHAT_SET_LONGJMP_RESUME:
-	/* If we hit the breakpoint at longjmp, disable it for the
-	   duration of this command.  Then, install a temporary
-	   breakpoint at the target of the jmp_buf. */
-	disable_longjmp_breakpoint ();
-	remove_breakpoints ();
-	breakpoints_inserted = 0;
-	if (!GET_LONGJMP_TARGET_P () || !GET_LONGJMP_TARGET (&jmp_buf_pc))
-	  {
-	    keep_going (ecs);
-	    return;
-	  }
-
-	/* Need to blow away step-resume breakpoint, as it
-	   interferes with us */
-	if (step_resume_breakpoint != NULL)
-	  {
-	    delete_step_resume_breakpoint (&step_resume_breakpoint);
-	  }
-	/* Not sure whether we need to blow this away too, but probably
-	   it is like the step-resume breakpoint.  */
-	if (through_sigtramp_breakpoint != NULL)
-	  {
-	    delete_breakpoint (through_sigtramp_breakpoint);
-	    through_sigtramp_breakpoint = NULL;
-	  }
-
-#if 0
-	/* FIXME - Need to implement nested temporary breakpoints */
-	if (step_over_calls > 0)
-	  set_longjmp_resume_breakpoint (jmp_buf_pc, get_current_frame ());
-	else
-#endif /* 0 */
-	  set_longjmp_resume_breakpoint (jmp_buf_pc, NULL);
-	ecs->handling_longjmp = 1;	/* FIXME */
-	keep_going (ecs);
-	return;
-
-      case BPSTAT_WHAT_CLEAR_LONGJMP_RESUME:
-      case BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE:
-	remove_breakpoints ();
-	breakpoints_inserted = 0;
-#if 0
-	/* FIXME - Need to implement nested temporary breakpoints */
-	if (step_over_calls
-	    && (INNER_THAN (FRAME_FP (get_current_frame ()),
-			    step_frame_address)))
-	  {
-	    ecs->another_trap = 1;
-	    keep_going (ecs);
-	    return;
-	  }
-#endif /* 0 */
-	disable_longjmp_breakpoint ();
-	ecs->handling_longjmp = 0;	/* FIXME */
-	if (what.main_action == BPSTAT_WHAT_CLEAR_LONGJMP_RESUME)
-	  break;
-	/* else fallthrough */
-
-      case BPSTAT_WHAT_SINGLE:
-	if (breakpoints_inserted)
-	  {
-	    remove_breakpoints ();
-	  }
-	breakpoints_inserted = 0;
-	ecs->another_trap = 1;
-	/* Still need to check other stuff, at least the case
-	   where we are stepping and step out of the right range.  */
-	break;
-
-      case BPSTAT_WHAT_STOP_NOISY:
-	stop_print_frame = 1;
-
-	/* We are about to nuke the step_resume_breakpoint and
-	   through_sigtramp_breakpoint via the cleanup chain, so
-	   no need to worry about it here.  */
-
-	stop_stepping (ecs);
-	return;
-
-      case BPSTAT_WHAT_STOP_SILENT:
-	stop_print_frame = 0;
-
-	/* We are about to nuke the step_resume_breakpoint and
-	   through_sigtramp_breakpoint via the cleanup chain, so
-	   no need to worry about it here.  */
-
-	stop_stepping (ecs);
-	return;
-
-      case BPSTAT_WHAT_STEP_RESUME:
-	/* This proably demands a more elegant solution, but, yeah
-	   right...
-
-	   This function's use of the simple variable
-	   step_resume_breakpoint doesn't seem to accomodate
-	   simultaneously active step-resume bp's, although the
-	   breakpoint list certainly can.
-
-	   If we reach here and step_resume_breakpoint is already
-	   NULL, then apparently we have multiple active
-	   step-resume bp's.  We'll just delete the breakpoint we
-	   stopped at, and carry on.  
-
-	   Correction: what the code currently does is delete a
-	   step-resume bp, but it makes no effort to ensure that
-	   the one deleted is the one currently stopped at.  MVS  */
-
-	if (step_resume_breakpoint == NULL)
-	  {
-	    step_resume_breakpoint =
-	      bpstat_find_step_resume_breakpoint (stop_bpstat);
-	  }
-	delete_step_resume_breakpoint (&step_resume_breakpoint);
-	break;
-
-      case BPSTAT_WHAT_THROUGH_SIGTRAMP:
-	if (through_sigtramp_breakpoint)
-	  delete_breakpoint (through_sigtramp_breakpoint);
-	through_sigtramp_breakpoint = NULL;
-
-	/* If were waiting for a trap, hitting the step_resume_break
-	   doesn't count as getting it.  */
-	if (trap_expected)
-	  ecs->another_trap = 1;
-	break;
-
-      case BPSTAT_WHAT_CHECK_SHLIBS:
-      case BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK:
-#ifdef SOLIB_ADD
-	{
-	  /* Remove breakpoints, we eventually want to step over the
-	     shlib event breakpoint, and SOLIB_ADD might adjust
-	     breakpoint addresses via breakpoint_re_set.  */
-	  if (breakpoints_inserted)
-	    remove_breakpoints ();
-	  breakpoints_inserted = 0;
-
-	  /* Check for any newly added shared libraries if we're
-	     supposed to be adding them automatically.  Switch
-	     terminal for any messages produced by
-	     breakpoint_re_set.  */
-	  target_terminal_ours_for_output ();
-	  SOLIB_ADD (NULL, 0, NULL, auto_solib_add);
-	  target_terminal_inferior ();
-
-	  /* Try to reenable shared library breakpoints, additional
-	     code segments in shared libraries might be mapped in now. */
-	  re_enable_breakpoints_in_shlibs ();
-
-	  /* If requested, stop when the dynamic linker notifies
-	     gdb of events.  This allows the user to get control
-	     and place breakpoints in initializer routines for
-	     dynamically loaded objects (among other things).  */
-	  if (stop_on_solib_events)
-	    {
-	      stop_stepping (ecs);
-	      return;
-	    }
-
-	  /* If we stopped due to an explicit catchpoint, then the
-	     (see above) call to SOLIB_ADD pulled in any symbols
-	     from a newly-loaded library, if appropriate.
-
-	     We do want the inferior to stop, but not where it is
-	     now, which is in the dynamic linker callback.  Rather,
-	     we would like it stop in the user's program, just after
-	     the call that caused this catchpoint to trigger.  That
-	     gives the user a more useful vantage from which to
-	     examine their program's state. */
-	  else if (what.main_action ==
-		   BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK)
-	    {
-	      /* ??rehrauer: If I could figure out how to get the
-	         right return PC from here, we could just set a temp
-	         breakpoint and resume.  I'm not sure we can without
-	         cracking open the dld's shared libraries and sniffing
-	         their unwind tables and text/data ranges, and that's
-	         not a terribly portable notion.
-
-	         Until that time, we must step the inferior out of the
-	         dld callback, and also out of the dld itself (and any
-	         code or stubs in libdld.sl, such as "shl_load" and
-	         friends) until we reach non-dld code.  At that point,
-	         we can stop stepping. */
-	      bpstat_get_triggered_catchpoints (stop_bpstat,
-						&ecs->
-						stepping_through_solib_catchpoints);
-	      ecs->stepping_through_solib_after_catch = 1;
-
-	      /* Be sure to lift all breakpoints, so the inferior does
-	         actually step past this point... */
-	      ecs->another_trap = 1;
-	      break;
-	    }
-	  else
-	    {
-	      /* We want to step over this breakpoint, then keep going.  */
-	      ecs->another_trap = 1;
-	      break;
-	    }
-	}
-#endif
-	break;
-
-      case BPSTAT_WHAT_LAST:
-	/* Not a real code, but listed here to shut up gcc -Wall.  */
-
-      case BPSTAT_WHAT_KEEP_CHECKING:
-	break;
-      }
-  }
-
-  /* We come here if we hit a breakpoint but should not
-     stop for it.  Possibly we also were stepping
-     and should stop for that.  So fall through and
-     test for stepping.  But, if not stepping,
-     do not stop.  */
-
-  /* Are we stepping to get the inferior out of the dynamic
-     linker's hook (and possibly the dld itself) after catching
-     a shlib event? */
-  if (ecs->stepping_through_solib_after_catch)
-    {
-#if defined(SOLIB_ADD)
-      /* Have we reached our destination?  If not, keep going. */
-      if (SOLIB_IN_DYNAMIC_LINKER (PIDGET (ecs->ptid), stop_pc))
-	{
-	  ecs->another_trap = 1;
-	  keep_going (ecs);
-	  return;
-	}
-#endif
-      /* Else, stop and report the catchpoint(s) whose triggering
-         caused us to begin stepping. */
-      ecs->stepping_through_solib_after_catch = 0;
-      bpstat_clear (&stop_bpstat);
-      stop_bpstat = bpstat_copy (ecs->stepping_through_solib_catchpoints);
-      bpstat_clear (&ecs->stepping_through_solib_catchpoints);
-      stop_print_frame = 1;
-      stop_stepping (ecs);
-      return;
-    }
-
-  if (!CALL_DUMMY_BREAKPOINT_OFFSET_P)
-    {
-      /* This is the old way of detecting the end of the stack dummy.
-         An architecture which defines CALL_DUMMY_BREAKPOINT_OFFSET gets
-         handled above.  As soon as we can test it on all of them, all
-         architectures should define it.  */
-
-      /* If this is the breakpoint at the end of a stack dummy,
-         just stop silently, unless the user was doing an si/ni, in which
-         case she'd better know what she's doing.  */
-
-      if (CALL_DUMMY_HAS_COMPLETED (stop_pc, read_sp (),
-				    FRAME_FP (get_current_frame ()))
-	  && !step_range_end)
-	{
-	  stop_print_frame = 0;
-	  stop_stack_dummy = 1;
-#ifdef HP_OS_BUG
-	  trap_expected_after_continue = 1;
-#endif
-	  stop_stepping (ecs);
-	  return;
-	}
-    }
-
-  if (step_resume_breakpoint)
-    {
-      /* Having a step-resume breakpoint overrides anything
-         else having to do with stepping commands until
-         that breakpoint is reached.  */
-      /* I'm not sure whether this needs to be check_sigtramp2 or
-         whether it could/should be keep_going.  */
-      check_sigtramp2 (ecs);
-      keep_going (ecs);
-      return;
-    }
-
-  if (step_range_end == 0)
-    {
-      /* Likewise if we aren't even stepping.  */
-      /* I'm not sure whether this needs to be check_sigtramp2 or
-         whether it could/should be keep_going.  */
-      check_sigtramp2 (ecs);
-      keep_going (ecs);
-      return;
-    }
-
-  /* If stepping through a line, keep going if still within it.
-
-     Note that step_range_end is the address of the first instruction
-     beyond the step range, and NOT the address of the last instruction
-     within it! */
-  if (stop_pc >= step_range_start && stop_pc < step_range_end)
-    {
-      /* We might be doing a BPSTAT_WHAT_SINGLE and getting a signal.
-         So definately need to check for sigtramp here.  */
-      check_sigtramp2 (ecs);
-      keep_going (ecs);
-      return;
-    }
-
-  /* We stepped out of the stepping range.  */
-
-  /* If we are stepping at the source level and entered the runtime
-     loader dynamic symbol resolution code, we keep on single stepping
-     until we exit the run time loader code and reach the callee's
-     address.  */
-  if (step_over_calls == STEP_OVER_UNDEBUGGABLE
-      && IN_SOLIB_DYNSYM_RESOLVE_CODE (stop_pc))
-    {
-      CORE_ADDR pc_after_resolver = SKIP_SOLIB_RESOLVER (stop_pc);
-
-      if (pc_after_resolver)
-	{
-	  /* Set up a step-resume breakpoint at the address
-	     indicated by SKIP_SOLIB_RESOLVER.  */
-	  struct symtab_and_line sr_sal;
-	  INIT_SAL (&sr_sal);
-	  sr_sal.pc = pc_after_resolver;
-
-	  check_for_old_step_resume_breakpoint ();
-	  step_resume_breakpoint =
-	    set_momentary_breakpoint (sr_sal, NULL, bp_step_resume);
-	  if (breakpoints_inserted)
-	    insert_breakpoints ();
-	}
-
-      keep_going (ecs);
-      return;
-    }
-
-  /* We can't update step_sp every time through the loop, because
-     reading the stack pointer would slow down stepping too much.
-     But we can update it every time we leave the step range.  */
-  ecs->update_step_sp = 1;
-
-  /* Did we just take a signal?  */
-  if (PC_IN_SIGTRAMP (stop_pc, ecs->stop_func_name)
-      && !PC_IN_SIGTRAMP (prev_pc, prev_func_name)
-      && INNER_THAN (read_sp (), step_sp))
-    {
-      /* We've just taken a signal; go until we are back to
-         the point where we took it and one more.  */
-
-      /* Note: The test above succeeds not only when we stepped
-         into a signal handler, but also when we step past the last
-         statement of a signal handler and end up in the return stub
-         of the signal handler trampoline.  To distinguish between
-         these two cases, check that the frame is INNER_THAN the
-         previous one below. pai/1997-09-11 */
-
-
-      {
-	CORE_ADDR current_frame = FRAME_FP (get_current_frame ());
-
-	if (INNER_THAN (current_frame, step_frame_address))
-	  {
-	    /* We have just taken a signal; go until we are back to
-	       the point where we took it and one more.  */
-
-	    /* This code is needed at least in the following case:
-	       The user types "next" and then a signal arrives (before
-	       the "next" is done).  */
-
-	    /* Note that if we are stopped at a breakpoint, then we need
-	       the step_resume breakpoint to override any breakpoints at
-	       the same location, so that we will still step over the
-	       breakpoint even though the signal happened.  */
-	    struct symtab_and_line sr_sal;
-
-	    INIT_SAL (&sr_sal);
-	    sr_sal.symtab = NULL;
-	    sr_sal.line = 0;
-	    sr_sal.pc = prev_pc;
-	    /* We could probably be setting the frame to
-	       step_frame_address; I don't think anyone thought to
-	       try it.  */
-	    check_for_old_step_resume_breakpoint ();
-	    step_resume_breakpoint =
-	      set_momentary_breakpoint (sr_sal, NULL, bp_step_resume);
-	    if (breakpoints_inserted)
-	      insert_breakpoints ();
-	  }
-	else
-	  {
-	    /* We just stepped out of a signal handler and into
-	       its calling trampoline.
-
-	       Normally, we'd call step_over_function from
-	       here, but for some reason GDB can't unwind the
-	       stack correctly to find the real PC for the point
-	       user code where the signal trampoline will return
-	       -- FRAME_SAVED_PC fails, at least on HP-UX 10.20.
-	       But signal trampolines are pretty small stubs of
-	       code, anyway, so it's OK instead to just
-	       single-step out.  Note: assuming such trampolines
-	       don't exhibit recursion on any platform... */
-	    find_pc_partial_function (stop_pc, &ecs->stop_func_name,
-				      &ecs->stop_func_start,
-				      &ecs->stop_func_end);
-	    /* Readjust stepping range */
-	    step_range_start = ecs->stop_func_start;
-	    step_range_end = ecs->stop_func_end;
-	    ecs->stepping_through_sigtramp = 1;
-	  }
-      }
-
-
-      /* If this is stepi or nexti, make sure that the stepping range
-         gets us past that instruction.  */
-      if (step_range_end == 1)
-	/* FIXME: Does this run afoul of the code below which, if
-	   we step into the middle of a line, resets the stepping
-	   range?  */
-	step_range_end = (step_range_start = prev_pc) + 1;
-
-      ecs->remove_breakpoints_on_following_step = 1;
-      keep_going (ecs);
-      return;
-    }
-
-  if (stop_pc == ecs->stop_func_start	/* Quick test */
-      || (in_prologue (stop_pc, ecs->stop_func_start) &&
-	  !IN_SOLIB_RETURN_TRAMPOLINE (stop_pc, ecs->stop_func_name))
-      || IN_SOLIB_CALL_TRAMPOLINE (stop_pc, ecs->stop_func_name)
-      || ecs->stop_func_name == 0)
-    {
-      /* It's a subroutine call.  */
-
-      if ((step_over_calls == STEP_OVER_NONE)
-	  || ((step_range_end == 1)
-	      && in_prologue (prev_pc, ecs->stop_func_start)))
-	{
-	  /* I presume that step_over_calls is only 0 when we're
-	     supposed to be stepping at the assembly language level
-	     ("stepi").  Just stop.  */
-	  /* Also, maybe we just did a "nexti" inside a prolog,
-	     so we thought it was a subroutine call but it was not.
-	     Stop as well.  FENN */
-	  stop_step = 1;
-	  print_stop_reason (END_STEPPING_RANGE, 0);
-	  stop_stepping (ecs);
-	  return;
-	}
-
-      if (step_over_calls == STEP_OVER_ALL || IGNORE_HELPER_CALL (stop_pc))
-	{
-	  /* We're doing a "next".  */
-
-	  if (PC_IN_SIGTRAMP (stop_pc, ecs->stop_func_name)
-	      && INNER_THAN (step_frame_address, read_sp ()))
-	    /* We stepped out of a signal handler, and into its
-	       calling trampoline.  This is misdetected as a
-	       subroutine call, but stepping over the signal
-	       trampoline isn't such a bad idea.  In order to do
-	       that, we have to ignore the value in
-	       step_frame_address, since that doesn't represent the
-	       frame that'll reach when we return from the signal
-	       trampoline.  Otherwise we'll probably continue to the
-	       end of the program.  */
-	    step_frame_address = 0;
-
-	  step_over_function (ecs);
-	  keep_going (ecs);
-	  return;
-	}
-
-      /* If we are in a function call trampoline (a stub between
-         the calling routine and the real function), locate the real
-         function.  That's what tells us (a) whether we want to step
-         into it at all, and (b) what prologue we want to run to
-         the end of, if we do step into it.  */
-      tmp = SKIP_TRAMPOLINE_CODE (stop_pc);
-      if (tmp != 0)
-	ecs->stop_func_start = tmp;
-      else
-	{
-	  tmp = DYNAMIC_TRAMPOLINE_NEXTPC (stop_pc);
-	  if (tmp)
-	    {
-	      struct symtab_and_line xxx;
-	      /* Why isn't this s_a_l called "sr_sal", like all of the
-	         other s_a_l's where this code is duplicated?  */
-	      INIT_SAL (&xxx);	/* initialize to zeroes */
-	      xxx.pc = tmp;
-	      xxx.section = find_pc_overlay (xxx.pc);
-	      check_for_old_step_resume_breakpoint ();
-	      step_resume_breakpoint =
-		set_momentary_breakpoint (xxx, NULL, bp_step_resume);
-	      insert_breakpoints ();
-	      keep_going (ecs);
-	      return;
-	    }
-	}
-
-      /* If we have line number information for the function we
-         are thinking of stepping into, step into it.
-
-         If there are several symtabs at that PC (e.g. with include
-         files), just want to know whether *any* of them have line
-         numbers.  find_pc_line handles this.  */
-      {
-	struct symtab_and_line tmp_sal;
-
-	tmp_sal = find_pc_line (ecs->stop_func_start, 0);
-	if (tmp_sal.line != 0)
-	  {
-	    step_into_function (ecs);
-	    return;
-	  }
-      }
-
-      /* If we have no line number and the step-stop-if-no-debug
-         is set, we stop the step so that the user has a chance to
-         switch in assembly mode.  */
-      if (step_over_calls == STEP_OVER_UNDEBUGGABLE && step_stop_if_no_debug)
-	{
-	  stop_step = 1;
-	  print_stop_reason (END_STEPPING_RANGE, 0);
-	  stop_stepping (ecs);
-	  return;
-	}
-
-      step_over_function (ecs);
-      keep_going (ecs);
-      return;
-
-    }
-
-  /* We've wandered out of the step range.  */
-
-  ecs->sal = find_pc_line (stop_pc, 0);
-
-  if (step_range_end == 1)
-    {
-      /* It is stepi or nexti.  We always want to stop stepping after
-         one instruction.  */
-      stop_step = 1;
-      print_stop_reason (END_STEPPING_RANGE, 0);
-      stop_stepping (ecs);
-      return;
-    }
-
-  /* If we're in the return path from a shared library trampoline,
-     we want to proceed through the trampoline when stepping.  */
-  if (IN_SOLIB_RETURN_TRAMPOLINE (stop_pc, ecs->stop_func_name))
-    {
-      CORE_ADDR tmp;
-
-      /* Determine where this trampoline returns.  */
-      tmp = SKIP_TRAMPOLINE_CODE (stop_pc);
-
-      /* Only proceed through if we know where it's going.  */
-      if (tmp)
-	{
-	  /* And put the step-breakpoint there and go until there. */
-	  struct symtab_and_line sr_sal;
-
-	  INIT_SAL (&sr_sal);	/* initialize to zeroes */
-	  sr_sal.pc = tmp;
-	  sr_sal.section = find_pc_overlay (sr_sal.pc);
-	  /* Do not specify what the fp should be when we stop
-	     since on some machines the prologue
-	     is where the new fp value is established.  */
-	  check_for_old_step_resume_breakpoint ();
-	  step_resume_breakpoint =
-	    set_momentary_breakpoint (sr_sal, NULL, bp_step_resume);
-	  if (breakpoints_inserted)
-	    insert_breakpoints ();
-
-	  /* Restart without fiddling with the step ranges or
-	     other state.  */
-	  keep_going (ecs);
-	  return;
-	}
-    }
-
-  if (ecs->sal.line == 0)
-    {
-      /* We have no line number information.  That means to stop
-         stepping (does this always happen right after one instruction,
-         when we do "s" in a function with no line numbers,
-         or can this happen as a result of a return or longjmp?).  */
-      stop_step = 1;
-      print_stop_reason (END_STEPPING_RANGE, 0);
-      stop_stepping (ecs);
-      return;
-    }
-
-  if ((stop_pc == ecs->sal.pc)
-      && (ecs->current_line != ecs->sal.line
-	  || ecs->current_symtab != ecs->sal.symtab))
-    {
-      /* We are at the start of a different line.  So stop.  Note that
-         we don't stop if we step into the middle of a different line.
-         That is said to make things like for (;;) statements work
-         better.  */
-      stop_step = 1;
-      print_stop_reason (END_STEPPING_RANGE, 0);
-      stop_stepping (ecs);
-      return;
-    }
-
-  /* We aren't done stepping.
-
-     Optimize by setting the stepping range to the line.
-     (We might not be in the original line, but if we entered a
-     new line in mid-statement, we continue stepping.  This makes
-     things like for(;;) statements work better.)  */
-
-  if (ecs->stop_func_end && ecs->sal.end >= ecs->stop_func_end)
-    {
-      /* If this is the last line of the function, don't keep stepping
-         (it would probably step us out of the function).
-         This is particularly necessary for a one-line function,
-         in which after skipping the prologue we better stop even though
-         we will be in mid-line.  */
-      stop_step = 1;
-      print_stop_reason (END_STEPPING_RANGE, 0);
-      stop_stepping (ecs);
-      return;
-    }
-  step_range_start = ecs->sal.pc;
-  step_range_end = ecs->sal.end;
-  step_frame_address = FRAME_FP (get_current_frame ());
-  ecs->current_line = ecs->sal.line;
-  ecs->current_symtab = ecs->sal.symtab;
-
-  /* In the case where we just stepped out of a function into the middle
-     of a line of the caller, continue stepping, but step_frame_address
-     must be modified to current frame */
-  {
-    CORE_ADDR current_frame = FRAME_FP (get_current_frame ());
-    if (!(INNER_THAN (current_frame, step_frame_address)))
-      step_frame_address = current_frame;
-  }
-
-  keep_going (ecs);
-}
-
-/* Are we in the middle of stepping?  */
-
-static int
-currently_stepping (struct execution_control_state *ecs)
-{
-  return ((through_sigtramp_breakpoint == NULL
-	   && !ecs->handling_longjmp
-	   && ((step_range_end && step_resume_breakpoint == NULL)
-	       || trap_expected))
-	  || ecs->stepping_through_solib_after_catch
-	  || bpstat_should_step ());
-}
-
-static void
-check_sigtramp2 (struct execution_control_state *ecs)
-{
-  if (trap_expected
-      && PC_IN_SIGTRAMP (stop_pc, ecs->stop_func_name)
-      && !PC_IN_SIGTRAMP (prev_pc, prev_func_name)
-      && INNER_THAN (read_sp (), step_sp))
-    {
-      /* What has happened here is that we have just stepped the
-         inferior with a signal (because it is a signal which
-         shouldn't make us stop), thus stepping into sigtramp.
-
-         So we need to set a step_resume_break_address breakpoint and
-         continue until we hit it, and then step.  FIXME: This should
-         be more enduring than a step_resume breakpoint; we should
-         know that we will later need to keep going rather than
-         re-hitting the breakpoint here (see the testsuite,
-         gdb.base/signals.exp where it says "exceedingly difficult").  */
-
-      struct symtab_and_line sr_sal;
-
-      INIT_SAL (&sr_sal);	/* initialize to zeroes */
-      sr_sal.pc = prev_pc;
-      sr_sal.section = find_pc_overlay (sr_sal.pc);
-      /* We perhaps could set the frame if we kept track of what the
-         frame corresponding to prev_pc was.  But we don't, so don't.  */
-      through_sigtramp_breakpoint =
-	set_momentary_breakpoint (sr_sal, NULL, bp_through_sigtramp);
-      if (breakpoints_inserted)
-	insert_breakpoints ();
-
-      ecs->remove_breakpoints_on_following_step = 1;
-      ecs->another_trap = 1;
-    }
-}
-
-/* Subroutine call with source code we should not step over.  Do step
-   to the first line of code in it.  */
-
-static void
-step_into_function (struct execution_control_state *ecs)
-{
-  struct symtab *s;
-  struct symtab_and_line sr_sal;
-
-  s = find_pc_symtab (stop_pc);
-  if (s && s->language != language_asm)
-    ecs->stop_func_start = SKIP_PROLOGUE (ecs->stop_func_start);
-
-  ecs->sal = find_pc_line (ecs->stop_func_start, 0);
-  /* Use the step_resume_break to step until the end of the prologue,
-     even if that involves jumps (as it seems to on the vax under
-     4.2).  */
-  /* If the prologue ends in the middle of a source line, continue to
-     the end of that source line (if it is still within the function).
-     Otherwise, just go to end of prologue.  */
-#ifdef PROLOGUE_FIRSTLINE_OVERLAP
-  /* no, don't either.  It skips any code that's legitimately on the
-     first line.  */
-#else
-  if (ecs->sal.end
-      && ecs->sal.pc != ecs->stop_func_start
-      && ecs->sal.end < ecs->stop_func_end)
-    ecs->stop_func_start = ecs->sal.end;
-#endif
-
-  if (ecs->stop_func_start == stop_pc)
-    {
-      /* We are already there: stop now.  */
-      stop_step = 1;
-      print_stop_reason (END_STEPPING_RANGE, 0);
-      stop_stepping (ecs);
-      return;
-    }
-  else
-    {
-      /* Put the step-breakpoint there and go until there.  */
-      INIT_SAL (&sr_sal);	/* initialize to zeroes */
-      sr_sal.pc = ecs->stop_func_start;
-      sr_sal.section = find_pc_overlay (ecs->stop_func_start);
-      /* Do not specify what the fp should be when we stop since on
-         some machines the prologue is where the new fp value is
-         established.  */
-      check_for_old_step_resume_breakpoint ();
-      step_resume_breakpoint =
-	set_momentary_breakpoint (sr_sal, NULL, bp_step_resume);
-      if (breakpoints_inserted)
-	insert_breakpoints ();
-
-      /* And make sure stepping stops right away then.  */
-      step_range_end = step_range_start;
-    }
-  keep_going (ecs);
-}
-
-/* We've just entered a callee, and we wish to resume until it returns
-   to the caller.  Setting a step_resume breakpoint on the return
-   address will catch a return from the callee.
-     
-   However, if the callee is recursing, we want to be careful not to
-   catch returns of those recursive calls, but only of THIS instance
-   of the call.
-
-   To do this, we set the step_resume bp's frame to our current
-   caller's frame (step_frame_address, which is set by the "next" or
-   "until" command, before execution begins).  */
-
-static void
-step_over_function (struct execution_control_state *ecs)
-{
-  struct symtab_and_line sr_sal;
-
-  INIT_SAL (&sr_sal);		/* initialize to zeros */
-  sr_sal.pc = ADDR_BITS_REMOVE (SAVED_PC_AFTER_CALL (get_current_frame ()));
-  sr_sal.section = find_pc_overlay (sr_sal.pc);
-
-  check_for_old_step_resume_breakpoint ();
-  step_resume_breakpoint =
-    set_momentary_breakpoint (sr_sal, get_current_frame (), bp_step_resume);
-
-  if (step_frame_address && !IN_SOLIB_DYNSYM_RESOLVE_CODE (sr_sal.pc))
-    step_resume_breakpoint->frame = step_frame_address;
-
-  if (breakpoints_inserted)
-    insert_breakpoints ();
-}
-
-static void
-stop_stepping (struct execution_control_state *ecs)
-{
-  if (target_has_execution)
-    {
-      /* Are we stopping for a vfork event?  We only stop when we see
-         the child's event.  However, we may not yet have seen the
-         parent's event.  And, inferior_ptid is still set to the
-         parent's pid, until we resume again and follow either the
-         parent or child.
-
-         To ensure that we can really touch inferior_ptid (aka, the
-         parent process) -- which calls to functions like read_pc
-         implicitly do -- wait on the parent if necessary. */
-      if ((pending_follow.kind == TARGET_WAITKIND_VFORKED)
-	  && !pending_follow.fork_event.saw_parent_fork)
-	{
-	  ptid_t parent_ptid;
-
-	  do
-	    {
-	      if (target_wait_hook)
-		parent_ptid = target_wait_hook (pid_to_ptid (-1), &(ecs->ws));
-	      else
-		parent_ptid = target_wait (pid_to_ptid (-1), &(ecs->ws));
-	    }
-	  while (!ptid_equal (parent_ptid, inferior_ptid));
-	}
-
-      /* Assuming the inferior still exists, set these up for next
-         time, just like we did above if we didn't break out of the
-         loop.  */
-      prev_pc = read_pc ();
-      prev_func_start = ecs->stop_func_start;
-      prev_func_name = ecs->stop_func_name;
-    }
-
-  /* Let callers know we don't want to wait for the inferior anymore.  */
-  ecs->wait_some_more = 0;
-}
-
-/* This function handles various cases where we need to continue
-   waiting for the inferior.  */
-/* (Used to be the keep_going: label in the old wait_for_inferior) */
-
-static void
-keep_going (struct execution_control_state *ecs)
-{
-  /* ??rehrauer: ttrace on HP-UX theoretically allows one to debug a
-     vforked child between its creation and subsequent exit or call to
-     exec().  However, I had big problems in this rather creaky exec
-     engine, getting that to work.  The fundamental problem is that
-     I'm trying to debug two processes via an engine that only
-     understands a single process with possibly multiple threads.
-
-     Hence, this spot is known to have problems when
-     target_can_follow_vfork_prior_to_exec returns 1. */
-
-  /* Save the pc before execution, to compare with pc after stop.  */
-  prev_pc = read_pc ();		/* Might have been DECR_AFTER_BREAK */
-  prev_func_start = ecs->stop_func_start;	/* Ok, since if DECR_PC_AFTER
-						   BREAK is defined, the
-						   original pc would not have
-						   been at the start of a
-						   function. */
-  prev_func_name = ecs->stop_func_name;
-
-  if (ecs->update_step_sp)
-    step_sp = read_sp ();
-  ecs->update_step_sp = 0;
-
-  /* If we did not do break;, it means we should keep running the
-     inferior and not return to debugger.  */
-
-  if (trap_expected && stop_signal != TARGET_SIGNAL_TRAP)
-    {
-      /* We took a signal (which we are supposed to pass through to
-         the inferior, else we'd have done a break above) and we
-         haven't yet gotten our trap.  Simply continue.  */
-      resume (currently_stepping (ecs), stop_signal);
-    }
-  else
-    {
-      /* Either the trap was not expected, but we are continuing
-         anyway (the user asked that this signal be passed to the
-         child)
-         -- or --
-         The signal was SIGTRAP, e.g. it was our signal, but we
-         decided we should resume from it.
-
-         We're going to run this baby now!
-
-         Insert breakpoints now, unless we are trying to one-proceed
-         past a breakpoint.  */
-      /* If we've just finished a special step resume and we don't
-         want to hit a breakpoint, pull em out.  */
-      if (step_resume_breakpoint == NULL
-	  && through_sigtramp_breakpoint == NULL
-	  && ecs->remove_breakpoints_on_following_step)
-	{
-	  ecs->remove_breakpoints_on_following_step = 0;
-	  remove_breakpoints ();
-	  breakpoints_inserted = 0;
-	}
-      else if (!breakpoints_inserted &&
-	       (through_sigtramp_breakpoint != NULL || !ecs->another_trap))
-	{
-	  breakpoints_failed = insert_breakpoints ();
-	  if (breakpoints_failed)
-	    {
-	      stop_stepping (ecs);
-	      return;
-	    }
-	  breakpoints_inserted = 1;
-	}
-
-      trap_expected = ecs->another_trap;
-
-      /* Do not deliver SIGNAL_TRAP (except when the user explicitly
-         specifies that such a signal should be delivered to the
-         target program).
-
-         Typically, this would occure when a user is debugging a
-         target monitor on a simulator: the target monitor sets a
-         breakpoint; the simulator encounters this break-point and
-         halts the simulation handing control to GDB; GDB, noteing
-         that the break-point isn't valid, returns control back to the
-         simulator; the simulator then delivers the hardware
-         equivalent of a SIGNAL_TRAP to the program being debugged. */
-
-      if (stop_signal == TARGET_SIGNAL_TRAP && !signal_program[stop_signal])
-	stop_signal = TARGET_SIGNAL_0;
-
-#ifdef SHIFT_INST_REGS
-      /* I'm not sure when this following segment applies.  I do know,
-         now, that we shouldn't rewrite the regs when we were stopped
-         by a random signal from the inferior process.  */
-      /* FIXME: Shouldn't this be based on the valid bit of the SXIP?
-         (this is only used on the 88k).  */
-
-      if (!bpstat_explains_signal (stop_bpstat)
-	  && (stop_signal != TARGET_SIGNAL_CHLD) && !stopped_by_random_signal)
-	SHIFT_INST_REGS ();
-#endif /* SHIFT_INST_REGS */
-
-      resume (currently_stepping (ecs), stop_signal);
-    }
-
-  prepare_to_wait (ecs);
-}
-
-/* This function normally comes after a resume, before
-   handle_inferior_event exits.  It takes care of any last bits of
-   housekeeping, and sets the all-important wait_some_more flag.  */
-
-static void
-prepare_to_wait (struct execution_control_state *ecs)
-{
-  if (ecs->infwait_state == infwait_normal_state)
-    {
-      overlay_cache_invalid = 1;
-
-      /* We have to invalidate the registers BEFORE calling
-         target_wait because they can be loaded from the target while
-         in target_wait.  This makes remote debugging a bit more
-         efficient for those targets that provide critical registers
-         as part of their normal status mechanism. */
-
-      registers_changed ();
-      ecs->waiton_ptid = pid_to_ptid (-1);
-      ecs->wp = &(ecs->ws);
-    }
-  /* This is the old end of the while loop.  Let everybody know we
-     want to wait for the inferior some more and get called again
-     soon.  */
-  ecs->wait_some_more = 1;
-}
-
-/* Print why the inferior has stopped. We always print something when
-   the inferior exits, or receives a signal. The rest of the cases are
-   dealt with later on in normal_stop() and print_it_typical().  Ideally
-   there should be a call to this function from handle_inferior_event()
-   each time stop_stepping() is called.*/
-static void
-print_stop_reason (enum inferior_stop_reason stop_reason, int stop_info)
-{
-  switch (stop_reason)
-    {
-    case STOP_UNKNOWN:
-      /* We don't deal with these cases from handle_inferior_event()
-         yet. */
-      break;
-    case END_STEPPING_RANGE:
-      /* We are done with a step/next/si/ni command. */
-      /* For now print nothing. */
-      /* Print a message only if not in the middle of doing a "step n"
-         operation for n > 1 */
-      if (!step_multi || !stop_step)
-	if (ui_out_is_mi_like_p (uiout))
-	  ui_out_field_string (uiout, "reason", "end-stepping-range");
-      break;
-    case BREAKPOINT_HIT:
-      /* We found a breakpoint. */
-      /* For now print nothing. */
-      break;
-    case SIGNAL_EXITED:
-      /* The inferior was terminated by a signal. */
-      annotate_signalled ();
-      if (ui_out_is_mi_like_p (uiout))
-	ui_out_field_string (uiout, "reason", "exited-signalled");
-      ui_out_text (uiout, "\nProgram terminated with signal ");
-      annotate_signal_name ();
-      ui_out_field_string (uiout, "signal-name",
-			   target_signal_to_name (stop_info));
-      annotate_signal_name_end ();
-      ui_out_text (uiout, ", ");
-      annotate_signal_string ();
-      ui_out_field_string (uiout, "signal-meaning",
-			   target_signal_to_string (stop_info));
-      annotate_signal_string_end ();
-      ui_out_text (uiout, ".\n");
-      ui_out_text (uiout, "The program no longer exists.\n");
-      break;
-    case EXITED:
-      /* The inferior program is finished. */
-      annotate_exited (stop_info);
-      if (stop_info)
-	{
-	  if (ui_out_is_mi_like_p (uiout))
-	    ui_out_field_string (uiout, "reason", "exited");
-	  ui_out_text (uiout, "\nProgram exited with code ");
-	  ui_out_field_fmt (uiout, "exit-code", "0%o",
-			    (unsigned int) stop_info);
-	  ui_out_text (uiout, ".\n");
-	}
-      else
-	{
-	  if (ui_out_is_mi_like_p (uiout))
-	    ui_out_field_string (uiout, "reason", "exited-normally");
-	  ui_out_text (uiout, "\nProgram exited normally.\n");
-	}
-      break;
-    case SIGNAL_RECEIVED:
-      /* Signal received. The signal table tells us to print about
-         it. */
-      annotate_signal ();
-      ui_out_text (uiout, "\nProgram received signal ");
-      annotate_signal_name ();
-      if (ui_out_is_mi_like_p (uiout))
-	ui_out_field_string (uiout, "reason", "signal-received");
-      ui_out_field_string (uiout, "signal-name",
-			   target_signal_to_name (stop_info));
-      annotate_signal_name_end ();
-      ui_out_text (uiout, ", ");
-      annotate_signal_string ();
-      ui_out_field_string (uiout, "signal-meaning",
-			   target_signal_to_string (stop_info));
-      annotate_signal_string_end ();
-      ui_out_text (uiout, ".\n");
-      break;
-    default:
-      internal_error (__FILE__, __LINE__,
-		      "print_stop_reason: unrecognized enum value");
-      break;
-    }
-}
-
-
-/* Here to return control to GDB when the inferior stops for real.
-   Print appropriate messages, remove breakpoints, give terminal our modes.
-
-   STOP_PRINT_FRAME nonzero means print the executing frame
-   (pc, function, args, file, line number and line text).
-   BREAKPOINTS_FAILED nonzero means stop was due to error
-   attempting to insert breakpoints.  */
-
-void
-normal_stop (void)
-{
-  /* As with the notification of thread events, we want to delay
-     notifying the user that we've switched thread context until
-     the inferior actually stops.
-
-     (Note that there's no point in saying anything if the inferior
-     has exited!) */
-  if (!ptid_equal (previous_inferior_ptid, inferior_ptid)
-      && target_has_execution)
-    {
-      target_terminal_ours_for_output ();
-      printf_filtered ("[Switching to %s]\n",
-		       target_pid_or_tid_to_str (inferior_ptid));
-      previous_inferior_ptid = inferior_ptid;
-    }
-
-  /* Make sure that the current_frame's pc is correct.  This
-     is a correction for setting up the frame info before doing
-     DECR_PC_AFTER_BREAK */
-  if (target_has_execution && get_current_frame ())
-    (get_current_frame ())->pc = read_pc ();
-
-  if (target_has_execution && breakpoints_inserted)
-    {
-      if (remove_breakpoints ())
-	{
-	  target_terminal_ours_for_output ();
-	  printf_filtered ("Cannot remove breakpoints because ");
-	  printf_filtered ("program is no longer writable.\n");
-	  printf_filtered ("It might be running in another process.\n");
-	  printf_filtered ("Further execution is probably impossible.\n");
-	}
-    }
-  breakpoints_inserted = 0;
-
-  /* Delete the breakpoint we stopped at, if it wants to be deleted.
-     Delete any breakpoint that is to be deleted at the next stop.  */
-
-  breakpoint_auto_delete (stop_bpstat);
-
-  /* If an auto-display called a function and that got a signal,
-     delete that auto-display to avoid an infinite recursion.  */
-
-  if (stopped_by_random_signal)
-    disable_current_display ();
-
-  /* Don't print a message if in the middle of doing a "step n"
-     operation for n > 1 */
-  if (step_multi && stop_step)
-    goto done;
-
-  target_terminal_ours ();
-
-  /* Look up the hook_stop and run it (CLI internally handles problem
-     of stop_command's pre-hook not existing).  */
-  if (stop_command)
-    catch_errors (hook_stop_stub, stop_command,
-		  "Error while running hook_stop:\n", RETURN_MASK_ALL);
-
-  if (!target_has_stack)
-    {
-
-      goto done;
-    }
-
-  /* Select innermost stack frame - i.e., current frame is frame 0,
-     and current location is based on that.
-     Don't do this on return from a stack dummy routine,
-     or if the program has exited. */
-
-  if (!stop_stack_dummy)
-    {
-      select_frame (get_current_frame ());
-
-      /* Print current location without a level number, if
-         we have changed functions or hit a breakpoint.
-         Print source line if we have one.
-         bpstat_print() contains the logic deciding in detail
-         what to print, based on the event(s) that just occurred. */
-
-      if (stop_print_frame && selected_frame)
-	{
-	  int bpstat_ret;
-	  int source_flag;
-	  int do_frame_printing = 1;
-
-	  bpstat_ret = bpstat_print (stop_bpstat);
-	  switch (bpstat_ret)
-	    {
-	    case PRINT_UNKNOWN:
-	      if (stop_step
-		  && step_frame_address == FRAME_FP (get_current_frame ())
-		  && step_start_function == find_pc_function (stop_pc))
-		source_flag = SRC_LINE;	/* finished step, just print source line */
-	      else
-		source_flag = SRC_AND_LOC;	/* print location and source line */
-	      break;
-	    case PRINT_SRC_AND_LOC:
-	      source_flag = SRC_AND_LOC;	/* print location and source line */
-	      break;
-	    case PRINT_SRC_ONLY:
-	      source_flag = SRC_LINE;
-	      break;
-	    case PRINT_NOTHING:
-	      source_flag = SRC_LINE;	/* something bogus */
-	      do_frame_printing = 0;
-	      break;
-	    default:
-	      internal_error (__FILE__, __LINE__, "Unknown value.");
-	    }
-	  /* For mi, have the same behavior every time we stop:
-	     print everything but the source line. */
-	  if (ui_out_is_mi_like_p (uiout))
-	    source_flag = LOC_AND_ADDRESS;
-
-	  if (ui_out_is_mi_like_p (uiout))
-	    ui_out_field_int (uiout, "thread-id",
-			      pid_to_thread_id (inferior_ptid));
-	  /* The behavior of this routine with respect to the source
-	     flag is:
-	     SRC_LINE: Print only source line
-	     LOCATION: Print only location
-	     SRC_AND_LOC: Print location and source line */
-	  if (do_frame_printing)
-	    show_and_print_stack_frame (selected_frame, -1, source_flag);
-
-	  /* Display the auto-display expressions.  */
-	  do_displays ();
-	}
-    }
-
-  /* Save the function value return registers, if we care.
-     We might be about to restore their previous contents.  */
-  if (proceed_to_finish)
-    /* NB: The copy goes through to the target picking up the value of
-       all the registers.  */
-    regcache_cpy (stop_registers, current_regcache);
-
-  if (stop_stack_dummy)
-    {
-      /* Pop the empty frame that contains the stack dummy.
-         POP_FRAME ends with a setting of the current frame, so we
-         can use that next. */
-      POP_FRAME;
-      /* Set stop_pc to what it was before we called the function.
-         Can't rely on restore_inferior_status because that only gets
-         called if we don't stop in the called function.  */
-      stop_pc = read_pc ();
-      select_frame (get_current_frame ());
-    }
-
-done:
-  annotate_stopped ();
-}
-
-static int
-hook_stop_stub (void *cmd)
-{
-  execute_cmd_pre_hook ((struct cmd_list_element *) cmd);
-  return (0);
-}
-
-int
-signal_stop_state (int signo)
-{
-  return signal_stop[signo];
-}
-
-int
-signal_print_state (int signo)
-{
-  return signal_print[signo];
-}
-
-int
-signal_pass_state (int signo)
-{
-  return signal_program[signo];
-}
-
-int
-signal_stop_update (signo, state)
-     int signo;
-     int state;
-{
-  int ret = signal_stop[signo];
-  signal_stop[signo] = state;
-  return ret;
-}
-
-int
-signal_print_update (signo, state)
-     int signo;
-     int state;
-{
-  int ret = signal_print[signo];
-  signal_print[signo] = state;
-  return ret;
-}
-
-int
-signal_pass_update (signo, state)
-     int signo;
-     int state;
-{
-  int ret = signal_program[signo];
-  signal_program[signo] = state;
-  return ret;
-}
-
-static void
-sig_print_header (void)
-{
-  printf_filtered ("\
-Signal        Stop\tPrint\tPass to program\tDescription\n");
-}
-
-static void
-sig_print_info (enum target_signal oursig)
-{
-  char *name = target_signal_to_name (oursig);
-  int name_padding = 13 - strlen (name);
-
-  if (name_padding <= 0)
-    name_padding = 0;
-
-  printf_filtered ("%s", name);
-  printf_filtered ("%*.*s ", name_padding, name_padding, "                 ");
-  printf_filtered ("%s\t", signal_stop[oursig] ? "Yes" : "No");
-  printf_filtered ("%s\t", signal_print[oursig] ? "Yes" : "No");
-  printf_filtered ("%s\t\t", signal_program[oursig] ? "Yes" : "No");
-  printf_filtered ("%s\n", target_signal_to_string (oursig));
-}
-
-/* Specify how various signals in the inferior should be handled.  */
-
-static void
-handle_command (char *args, int from_tty)
-{
-  char **argv;
-  int digits, wordlen;
-  int sigfirst, signum, siglast;
-  enum target_signal oursig;
-  int allsigs;
-  int nsigs;
-  unsigned char *sigs;
-  struct cleanup *old_chain;
-
-  if (args == NULL)
-    {
-      error_no_arg ("signal to handle");
-    }
-
-  /* Allocate and zero an array of flags for which signals to handle. */
-
-  nsigs = (int) TARGET_SIGNAL_LAST;
-  sigs = (unsigned char *) alloca (nsigs);
-  memset (sigs, 0, nsigs);
-
-  /* Break the command line up into args. */
-
-  argv = buildargv (args);
-  if (argv == NULL)
-    {
-      nomem (0);
-    }
-  old_chain = make_cleanup_freeargv (argv);
-
-  /* Walk through the args, looking for signal oursigs, signal names, and
-     actions.  Signal numbers and signal names may be interspersed with
-     actions, with the actions being performed for all signals cumulatively
-     specified.  Signal ranges can be specified as <LOW>-<HIGH>. */
-
-  while (*argv != NULL)
-    {
-      wordlen = strlen (*argv);
-      for (digits = 0; isdigit ((*argv)[digits]); digits++)
-	{;
-	}
-      allsigs = 0;
-      sigfirst = siglast = -1;
-
-      if (wordlen >= 1 && !strncmp (*argv, "all", wordlen))
-	{
-	  /* Apply action to all signals except those used by the
-	     debugger.  Silently skip those. */
-	  allsigs = 1;
-	  sigfirst = 0;
-	  siglast = nsigs - 1;
-	}
-      else if (wordlen >= 1 && !strncmp (*argv, "stop", wordlen))
-	{
-	  SET_SIGS (nsigs, sigs, signal_stop);
-	  SET_SIGS (nsigs, sigs, signal_print);
-	}
-      else if (wordlen >= 1 && !strncmp (*argv, "ignore", wordlen))
-	{
-	  UNSET_SIGS (nsigs, sigs, signal_program);
-	}
-      else if (wordlen >= 2 && !strncmp (*argv, "print", wordlen))
-	{
-	  SET_SIGS (nsigs, sigs, signal_print);
-	}
-      else if (wordlen >= 2 && !strncmp (*argv, "pass", wordlen))
-	{
-	  SET_SIGS (nsigs, sigs, signal_program);
-	}
-      else if (wordlen >= 3 && !strncmp (*argv, "nostop", wordlen))
-	{
-	  UNSET_SIGS (nsigs, sigs, signal_stop);
-	}
-      else if (wordlen >= 3 && !strncmp (*argv, "noignore", wordlen))
-	{
-	  SET_SIGS (nsigs, sigs, signal_program);
-	}
-      else if (wordlen >= 4 && !strncmp (*argv, "noprint", wordlen))
-	{
-	  UNSET_SIGS (nsigs, sigs, signal_print);
-	  UNSET_SIGS (nsigs, sigs, signal_stop);
-	}
-      else if (wordlen >= 4 && !strncmp (*argv, "nopass", wordlen))
-	{
-	  UNSET_SIGS (nsigs, sigs, signal_program);
-	}
-      else if (digits > 0)
-	{
-	  /* It is numeric.  The numeric signal refers to our own
-	     internal signal numbering from target.h, not to host/target
-	     signal  number.  This is a feature; users really should be
-	     using symbolic names anyway, and the common ones like
-	     SIGHUP, SIGINT, SIGALRM, etc. will work right anyway.  */
-
-	  sigfirst = siglast = (int)
-	    target_signal_from_command (atoi (*argv));
-	  if ((*argv)[digits] == '-')
-	    {
-	      siglast = (int)
-		target_signal_from_command (atoi ((*argv) + digits + 1));
-	    }
-	  if (sigfirst > siglast)
-	    {
-	      /* Bet he didn't figure we'd think of this case... */
-	      signum = sigfirst;
-	      sigfirst = siglast;
-	      siglast = signum;
-	    }
-	}
-      else
-	{
-	  oursig = target_signal_from_name (*argv);
-	  if (oursig != TARGET_SIGNAL_UNKNOWN)
-	    {
-	      sigfirst = siglast = (int) oursig;
-	    }
-	  else
-	    {
-	      /* Not a number and not a recognized flag word => complain.  */
-	      error ("Unrecognized or ambiguous flag word: \"%s\".", *argv);
-	    }
-	}
-
-      /* If any signal numbers or symbol names were found, set flags for
-         which signals to apply actions to. */
-
-      for (signum = sigfirst; signum >= 0 && signum <= siglast; signum++)
-	{
-	  switch ((enum target_signal) signum)
-	    {
-	    case TARGET_SIGNAL_TRAP:
-	    case TARGET_SIGNAL_INT:
-	      if (!allsigs && !sigs[signum])
-		{
-		  if (query ("%s is used by the debugger.\n\
-Are you sure you want to change it? ", target_signal_to_name ((enum target_signal) signum)))
-		    {
-		      sigs[signum] = 1;
-		    }
-		  else
-		    {
-		      printf_unfiltered ("Not confirmed, unchanged.\n");
-		      gdb_flush (gdb_stdout);
-		    }
-		}
-	      break;
-	    case TARGET_SIGNAL_0:
-	    case TARGET_SIGNAL_DEFAULT:
-	    case TARGET_SIGNAL_UNKNOWN:
-	      /* Make sure that "all" doesn't print these.  */
-	      break;
-	    default:
-	      sigs[signum] = 1;
-	      break;
-	    }
-	}
-
-      argv++;
-    }
-
-  target_notice_signals (inferior_ptid);
-
-  if (from_tty)
-    {
-      /* Show the results.  */
-      sig_print_header ();
-      for (signum = 0; signum < nsigs; signum++)
-	{
-	  if (sigs[signum])
-	    {
-	      sig_print_info (signum);
-	    }
-	}
-    }
-
-  do_cleanups (old_chain);
-}
-
-static void
-xdb_handle_command (char *args, int from_tty)
-{
-  char **argv;
-  struct cleanup *old_chain;
-
-  /* Break the command line up into args. */
-
-  argv = buildargv (args);
-  if (argv == NULL)
-    {
-      nomem (0);
-    }
-  old_chain = make_cleanup_freeargv (argv);
-  if (argv[1] != (char *) NULL)
-    {
-      char *argBuf;
-      int bufLen;
-
-      bufLen = strlen (argv[0]) + 20;
-      argBuf = (char *) xmalloc (bufLen);
-      if (argBuf)
-	{
-	  int validFlag = 1;
-	  enum target_signal oursig;
-
-	  oursig = target_signal_from_name (argv[0]);
-	  memset (argBuf, 0, bufLen);
-	  if (strcmp (argv[1], "Q") == 0)
-	    sprintf (argBuf, "%s %s", argv[0], "noprint");
-	  else
-	    {
-	      if (strcmp (argv[1], "s") == 0)
-		{
-		  if (!signal_stop[oursig])
-		    sprintf (argBuf, "%s %s", argv[0], "stop");
-		  else
-		    sprintf (argBuf, "%s %s", argv[0], "nostop");
-		}
-	      else if (strcmp (argv[1], "i") == 0)
-		{
-		  if (!signal_program[oursig])
-		    sprintf (argBuf, "%s %s", argv[0], "pass");
-		  else
-		    sprintf (argBuf, "%s %s", argv[0], "nopass");
-		}
-	      else if (strcmp (argv[1], "r") == 0)
-		{
-		  if (!signal_print[oursig])
-		    sprintf (argBuf, "%s %s", argv[0], "print");
-		  else
-		    sprintf (argBuf, "%s %s", argv[0], "noprint");
-		}
-	      else
-		validFlag = 0;
-	    }
-	  if (validFlag)
-	    handle_command (argBuf, from_tty);
-	  else
-	    printf_filtered ("Invalid signal handling flag.\n");
-	  if (argBuf)
-	    xfree (argBuf);
-	}
-    }
-  do_cleanups (old_chain);
-}
-
-/* Print current contents of the tables set by the handle command.
-   It is possible we should just be printing signals actually used
-   by the current target (but for things to work right when switching
-   targets, all signals should be in the signal tables).  */
-
-static void
-signals_info (char *signum_exp, int from_tty)
-{
-  enum target_signal oursig;
-  sig_print_header ();
-
-  if (signum_exp)
-    {
-      /* First see if this is a symbol name.  */
-      oursig = target_signal_from_name (signum_exp);
-      if (oursig == TARGET_SIGNAL_UNKNOWN)
-	{
-	  /* No, try numeric.  */
-	  oursig =
-	    target_signal_from_command (parse_and_eval_long (signum_exp));
-	}
-      sig_print_info (oursig);
-      return;
-    }
-
-  printf_filtered ("\n");
-  /* These ugly casts brought to you by the native VAX compiler.  */
-  for (oursig = TARGET_SIGNAL_FIRST;
-       (int) oursig < (int) TARGET_SIGNAL_LAST;
-       oursig = (enum target_signal) ((int) oursig + 1))
-    {
-      QUIT;
-
-      if (oursig != TARGET_SIGNAL_UNKNOWN
-	  && oursig != TARGET_SIGNAL_DEFAULT && oursig != TARGET_SIGNAL_0)
-	sig_print_info (oursig);
-    }
-
-  printf_filtered ("\nUse the \"handle\" command to change these tables.\n");
-}
-
-struct inferior_status
-{
-  enum target_signal stop_signal;
-  CORE_ADDR stop_pc;
-  bpstat stop_bpstat;
-  int stop_step;
-  int stop_stack_dummy;
-  int stopped_by_random_signal;
-  int trap_expected;
-  CORE_ADDR step_range_start;
-  CORE_ADDR step_range_end;
-  CORE_ADDR step_frame_address;
-  enum step_over_calls_kind step_over_calls;
-  CORE_ADDR step_resume_break_address;
-  int stop_after_trap;
-  int stop_soon_quietly;
-  struct regcache *stop_registers;
-
-  /* These are here because if call_function_by_hand has written some
-     registers and then decides to call error(), we better not have changed
-     any registers.  */
-  struct regcache *registers;
-
-  /* A frame unique identifier.  */
-  struct frame_id selected_frame_id;
-
-  int breakpoint_proceeded;
-  int restore_stack_info;
-  int proceed_to_finish;
-};
-
-void
-write_inferior_status_register (struct inferior_status *inf_status, int regno,
-				LONGEST val)
-{
-  int size = REGISTER_RAW_SIZE (regno);
-  void *buf = alloca (size);
-  store_signed_integer (buf, size, val);
-  regcache_raw_write (inf_status->registers, regno, buf);
-}
-
-/* Save all of the information associated with the inferior<==>gdb
-   connection.  INF_STATUS is a pointer to a "struct inferior_status"
-   (defined in inferior.h).  */
-
-struct inferior_status *
-save_inferior_status (int restore_stack_info)
-{
-  struct inferior_status *inf_status = XMALLOC (struct inferior_status);
-
-  inf_status->stop_signal = stop_signal;
-  inf_status->stop_pc = stop_pc;
-  inf_status->stop_step = stop_step;
-  inf_status->stop_stack_dummy = stop_stack_dummy;
-  inf_status->stopped_by_random_signal = stopped_by_random_signal;
-  inf_status->trap_expected = trap_expected;
-  inf_status->step_range_start = step_range_start;
-  inf_status->step_range_end = step_range_end;
-  inf_status->step_frame_address = step_frame_address;
-  inf_status->step_over_calls = step_over_calls;
-  inf_status->stop_after_trap = stop_after_trap;
-  inf_status->stop_soon_quietly = stop_soon_quietly;
-  /* Save original bpstat chain here; replace it with copy of chain.
-     If caller's caller is walking the chain, they'll be happier if we
-     hand them back the original chain when restore_inferior_status is
-     called.  */
-  inf_status->stop_bpstat = stop_bpstat;
-  stop_bpstat = bpstat_copy (stop_bpstat);
-  inf_status->breakpoint_proceeded = breakpoint_proceeded;
-  inf_status->restore_stack_info = restore_stack_info;
-  inf_status->proceed_to_finish = proceed_to_finish;
-
-  inf_status->stop_registers = regcache_dup_no_passthrough (stop_registers);
-
-  inf_status->registers = regcache_dup (current_regcache);
-
-  get_frame_id (selected_frame, &inf_status->selected_frame_id);
-  return inf_status;
-}
-
-static int
-restore_selected_frame (void *args)
-{
-  struct frame_id *fid = (struct frame_id *) args;
-  struct frame_info *frame;
-
-  frame = frame_find_by_id (*fid);
-
-  /* If inf_status->selected_frame_address is NULL, there was no
-     previously selected frame.  */
-  if (frame == NULL)
-    {
-      warning ("Unable to restore previously selected frame.\n");
-      return 0;
-    }
-
-  select_frame (frame);
-
-  return (1);
-}
-
-void
-restore_inferior_status (struct inferior_status *inf_status)
-{
-  stop_signal = inf_status->stop_signal;
-  stop_pc = inf_status->stop_pc;
-  stop_step = inf_status->stop_step;
-  stop_stack_dummy = inf_status->stop_stack_dummy;
-  stopped_by_random_signal = inf_status->stopped_by_random_signal;
-  trap_expected = inf_status->trap_expected;
-  step_range_start = inf_status->step_range_start;
-  step_range_end = inf_status->step_range_end;
-  step_frame_address = inf_status->step_frame_address;
-  step_over_calls = inf_status->step_over_calls;
-  stop_after_trap = inf_status->stop_after_trap;
-  stop_soon_quietly = inf_status->stop_soon_quietly;
-  bpstat_clear (&stop_bpstat);
-  stop_bpstat = inf_status->stop_bpstat;
-  breakpoint_proceeded = inf_status->breakpoint_proceeded;
-  proceed_to_finish = inf_status->proceed_to_finish;
-
-  /* FIXME: Is the restore of stop_registers always needed. */
-  regcache_xfree (stop_registers);
-  stop_registers = inf_status->stop_registers;
-
-  /* The inferior can be gone if the user types "print exit(0)"
-     (and perhaps other times).  */
-  if (target_has_execution)
-    /* NB: The register write goes through to the target.  */
-    regcache_cpy (current_regcache, inf_status->registers);
-  regcache_xfree (inf_status->registers);
-
-  /* FIXME: If we are being called after stopping in a function which
-     is called from gdb, we should not be trying to restore the
-     selected frame; it just prints a spurious error message (The
-     message is useful, however, in detecting bugs in gdb (like if gdb
-     clobbers the stack)).  In fact, should we be restoring the
-     inferior status at all in that case?  .  */
-
-  if (target_has_stack && inf_status->restore_stack_info)
-    {
-      /* The point of catch_errors is that if the stack is clobbered,
-         walking the stack might encounter a garbage pointer and
-         error() trying to dereference it.  */
-      if (catch_errors
-	  (restore_selected_frame, &inf_status->selected_frame_id,
-	   "Unable to restore previously selected frame:\n",
-	   RETURN_MASK_ERROR) == 0)
-	/* Error in restoring the selected frame.  Select the innermost
-	   frame.  */
-	select_frame (get_current_frame ());
-
-    }
-
-  xfree (inf_status);
-}
-
-static void
-do_restore_inferior_status_cleanup (void *sts)
-{
-  restore_inferior_status (sts);
-}
-
-struct cleanup *
-make_cleanup_restore_inferior_status (struct inferior_status *inf_status)
-{
-  return make_cleanup (do_restore_inferior_status_cleanup, inf_status);
-}
-
-void
-discard_inferior_status (struct inferior_status *inf_status)
-{
-  /* See save_inferior_status for info on stop_bpstat. */
-  bpstat_clear (&inf_status->stop_bpstat);
-  regcache_xfree (inf_status->registers);
-  regcache_xfree (inf_status->stop_registers);
-  xfree (inf_status);
-}
-
-/* Oft used ptids */
-ptid_t null_ptid;
-ptid_t minus_one_ptid;
-
-/* Create a ptid given the necessary PID, LWP, and TID components.  */
-
-ptid_t
-ptid_build (int pid, long lwp, long tid)
-{
-  ptid_t ptid;
-
-  ptid.pid = pid;
-  ptid.lwp = lwp;
-  ptid.tid = tid;
-  return ptid;
-}
-
-/* Create a ptid from just a pid.  */
-
-ptid_t
-pid_to_ptid (int pid)
-{
-  return ptid_build (pid, 0, 0);
-}
-
-/* Fetch the pid (process id) component from a ptid.  */
-
-int
-ptid_get_pid (ptid_t ptid)
-{
-  return ptid.pid;
-}
-
-/* Fetch the lwp (lightweight process) component from a ptid.  */
-
-long
-ptid_get_lwp (ptid_t ptid)
-{
-  return ptid.lwp;
-}
-
-/* Fetch the tid (thread id) component from a ptid.  */
-
-long
-ptid_get_tid (ptid_t ptid)
-{
-  return ptid.tid;
-}
-
-/* ptid_equal() is used to test equality of two ptids.  */
-
-int
-ptid_equal (ptid_t ptid1, ptid_t ptid2)
-{
-  return (ptid1.pid == ptid2.pid && ptid1.lwp == ptid2.lwp
-	  && ptid1.tid == ptid2.tid);
-}
-
-/* restore_inferior_ptid() will be used by the cleanup machinery
-   to restore the inferior_ptid value saved in a call to
-   save_inferior_ptid().  */
-
-static void
-restore_inferior_ptid (void *arg)
-{
-  ptid_t *saved_ptid_ptr = arg;
-  inferior_ptid = *saved_ptid_ptr;
-  xfree (arg);
-}
-
-/* Save the value of inferior_ptid so that it may be restored by a
-   later call to do_cleanups().  Returns the struct cleanup pointer
-   needed for later doing the cleanup.  */
-
-struct cleanup *
-save_inferior_ptid (void)
-{
-  ptid_t *saved_ptid_ptr;
-
-  saved_ptid_ptr = xmalloc (sizeof (ptid_t));
-  *saved_ptid_ptr = inferior_ptid;
-  return make_cleanup (restore_inferior_ptid, saved_ptid_ptr);
-}
-
-
-static void
-build_infrun (void)
-{
-  stop_registers = regcache_xmalloc (current_gdbarch);
-}
-
-void
-_initialize_infrun (void)
-{
-  register int i;
-  register int numsigs;
-  struct cmd_list_element *c;
-
-  register_gdbarch_swap (&stop_registers, sizeof (stop_registers), NULL);
-  register_gdbarch_swap (NULL, 0, build_infrun);
-
-  add_info ("signals", signals_info,
-	    "What debugger does when program gets various signals.\n\
-Specify a signal as argument to print info on that signal only.");
-  add_info_alias ("handle", "signals", 0);
-
-  add_com ("handle", class_run, handle_command,
-	   concat ("Specify how to handle a signal.\n\
-Args are signals and actions to apply to those signals.\n\
-Symbolic signals (e.g. SIGSEGV) are recommended but numeric signals\n\
-from 1-15 are allowed for compatibility with old versions of GDB.\n\
-Numeric ranges may be specified with the form LOW-HIGH (e.g. 1-5).\n\
-The special arg \"all\" is recognized to mean all signals except those\n\
-used by the debugger, typically SIGTRAP and SIGINT.\n", "Recognized actions include \"stop\", \"nostop\", \"print\", \"noprint\",\n\
-\"pass\", \"nopass\", \"ignore\", or \"noignore\".\n\
-Stop means reenter debugger if this signal happens (implies print).\n\
-Print means print a message if this signal happens.\n\
-Pass means let program see this signal; otherwise program doesn't know.\n\
-Ignore is a synonym for nopass and noignore is a synonym for pass.\n\
-Pass and Stop may be combined.", NULL));
-  if (xdb_commands)
-    {
-      add_com ("lz", class_info, signals_info,
-	       "What debugger does when program gets various signals.\n\
-Specify a signal as argument to print info on that signal only.");
-      add_com ("z", class_run, xdb_handle_command,
-	       concat ("Specify how to handle a signal.\n\
-Args are signals and actions to apply to those signals.\n\
-Symbolic signals (e.g. SIGSEGV) are recommended but numeric signals\n\
-from 1-15 are allowed for compatibility with old versions of GDB.\n\
-Numeric ranges may be specified with the form LOW-HIGH (e.g. 1-5).\n\
-The special arg \"all\" is recognized to mean all signals except those\n\
-used by the debugger, typically SIGTRAP and SIGINT.\n", "Recognized actions include \"s\" (toggles between stop and nostop), \n\
-\"r\" (toggles between print and noprint), \"i\" (toggles between pass and \
-nopass), \"Q\" (noprint)\n\
-Stop means reenter debugger if this signal happens (implies print).\n\
-Print means print a message if this signal happens.\n\
-Pass means let program see this signal; otherwise program doesn't know.\n\
-Ignore is a synonym for nopass and noignore is a synonym for pass.\n\
-Pass and Stop may be combined.", NULL));
-    }
-
-  if (!dbx_commands)
-    stop_command =
-      add_cmd ("stop", class_obscure, not_just_help_class_command, "There is no `stop' command, but you can set a hook on `stop'.\n\
-This allows you to set a list of commands to be run each time execution\n\
-of the program stops.", &cmdlist);
-
-  numsigs = (int) TARGET_SIGNAL_LAST;
-  signal_stop = (unsigned char *) xmalloc (sizeof (signal_stop[0]) * numsigs);
-  signal_print = (unsigned char *)
-    xmalloc (sizeof (signal_print[0]) * numsigs);
-  signal_program = (unsigned char *)
-    xmalloc (sizeof (signal_program[0]) * numsigs);
-  for (i = 0; i < numsigs; i++)
-    {
-      signal_stop[i] = 1;
-      signal_print[i] = 1;
-      signal_program[i] = 1;
-    }
-
-  /* Signals caused by debugger's own actions
-     should not be given to the program afterwards.  */
-  signal_program[TARGET_SIGNAL_TRAP] = 0;
-  signal_program[TARGET_SIGNAL_INT] = 0;
-
-  /* Signals that are not errors should not normally enter the debugger.  */
-  signal_stop[TARGET_SIGNAL_ALRM] = 0;
-  signal_print[TARGET_SIGNAL_ALRM] = 0;
-  signal_stop[TARGET_SIGNAL_VTALRM] = 0;
-  signal_print[TARGET_SIGNAL_VTALRM] = 0;
-  signal_stop[TARGET_SIGNAL_PROF] = 0;
-  signal_print[TARGET_SIGNAL_PROF] = 0;
-  signal_stop[TARGET_SIGNAL_CHLD] = 0;
-  signal_print[TARGET_SIGNAL_CHLD] = 0;
-  signal_stop[TARGET_SIGNAL_IO] = 0;
-  signal_print[TARGET_SIGNAL_IO] = 0;
-  signal_stop[TARGET_SIGNAL_POLL] = 0;
-  signal_print[TARGET_SIGNAL_POLL] = 0;
-  signal_stop[TARGET_SIGNAL_URG] = 0;
-  signal_print[TARGET_SIGNAL_URG] = 0;
-  signal_stop[TARGET_SIGNAL_WINCH] = 0;
-  signal_print[TARGET_SIGNAL_WINCH] = 0;
-
-  /* These signals are used internally by user-level thread
-     implementations.  (See signal(5) on Solaris.)  Like the above
-     signals, a healthy program receives and handles them as part of
-     its normal operation.  */
-  signal_stop[TARGET_SIGNAL_LWP] = 0;
-  signal_print[TARGET_SIGNAL_LWP] = 0;
-  signal_stop[TARGET_SIGNAL_WAITING] = 0;
-  signal_print[TARGET_SIGNAL_WAITING] = 0;
-  signal_stop[TARGET_SIGNAL_CANCEL] = 0;
-  signal_print[TARGET_SIGNAL_CANCEL] = 0;
-
-#ifdef SOLIB_ADD
-  add_show_from_set
-    (add_set_cmd ("stop-on-solib-events", class_support, var_zinteger,
-		  (char *) &stop_on_solib_events,
-		  "Set stopping for shared library events.\n\
-If nonzero, gdb will give control to the user when the dynamic linker\n\
-notifies gdb of shared library events.  The most common event of interest\n\
-to the user would be loading/unloading of a new library.\n", &setlist), &showlist);
-#endif
-
-  c = add_set_enum_cmd ("follow-fork-mode",
-			class_run,
-			follow_fork_mode_kind_names, &follow_fork_mode_string,
-/* ??rehrauer:  The "both" option is broken, by what may be a 10.20
-   kernel problem.  It's also not terribly useful without a GUI to
-   help the user drive two debuggers.  So for now, I'm disabling
-   the "both" option.  */
-/*                      "Set debugger response to a program call of fork \
-   or vfork.\n\
-   A fork or vfork creates a new process.  follow-fork-mode can be:\n\
-   parent  - the original process is debugged after a fork\n\
-   child   - the new process is debugged after a fork\n\
-   both    - both the parent and child are debugged after a fork\n\
-   ask     - the debugger will ask for one of the above choices\n\
-   For \"both\", another copy of the debugger will be started to follow\n\
-   the new child process.  The original debugger will continue to follow\n\
-   the original parent process.  To distinguish their prompts, the\n\
-   debugger copy's prompt will be changed.\n\
-   For \"parent\" or \"child\", the unfollowed process will run free.\n\
-   By default, the debugger will follow the parent process.",
- */
-			"Set debugger response to a program call of fork \
-or vfork.\n\
-A fork or vfork creates a new process.  follow-fork-mode can be:\n\
-  parent  - the original process is debugged after a fork\n\
-  child   - the new process is debugged after a fork\n\
-  ask     - the debugger will ask for one of the above choices\n\
-For \"parent\" or \"child\", the unfollowed process will run free.\n\
-By default, the debugger will follow the parent process.", &setlist);
-  add_show_from_set (c, &showlist);
-
-  c = add_set_enum_cmd ("scheduler-locking", class_run, scheduler_enums,	/* array of string names */
-			&scheduler_mode,	/* current mode  */
-			"Set mode for locking scheduler during execution.\n\
-off  == no locking (threads may preempt at any time)\n\
-on   == full locking (no thread except the current thread may run)\n\
-step == scheduler locked during every single-step operation.\n\
-	In this mode, no other thread may run during a step command.\n\
-	Other threads may run while stepping over a function call ('next').", &setlist);
-
-  set_cmd_sfunc (c, set_schedlock_func);	/* traps on target vector */
-  add_show_from_set (c, &showlist);
-
-  c = add_set_cmd ("step-mode", class_run,
-		   var_boolean, (char *) &step_stop_if_no_debug,
-		   "Set mode of the step operation. When set, doing a step over a\n\
-function without debug line information will stop at the first\n\
-instruction of that function. Otherwise, the function is skipped and\n\
-the step command stops at a different source line.", &setlist);
-  add_show_from_set (c, &showlist);
-
-  /* ptid initializations */
-  null_ptid = ptid_build (0, 0, 0);
-  minus_one_ptid = ptid_build (-1, 0, 0);
-  inferior_ptid = null_ptid;
-  target_last_wait_ptid = minus_one_ptid;
-}
author	nobody <>	2002-09-07 00:00:05 +0000
committer	nobody <>	2002-09-07 00:00:05 +0000
commit	c1aa2a27e755c883b5c49b223120dfb712ea4e28 (patch)
tree	a98633075cd1f2b034b49446e83e522708d11f68 /gdb/infrun.c
parent	2e3c0e2427295c9cc09a8a707dfba38d50e2ba30 (diff)
download	gdb-sid-20020905-branch.zip gdb-sid-20020905-branch.tar.gz gdb-sid-20020905-branch.tar.bz2