This commit was manufactured by cvs2svn to create branch

'kseitz_interps-20020528-branch'.

Sprout from cagney_regbuf-20020515-branch 2002-05-15 21:19:22 UTC nobody 'This commit was manufactured by cvs2svn to create branch'
Cherrypick from master 2002-05-28 18:43:08 UTC Jason Thorpe <thorpej@netbsd.org> '* ppcnbsd-nat.c: Rewrite.':
    gdb/ChangeLog
    gdb/Makefile.in
    gdb/mi/mi-main.c
Delete:
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    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.mh
    gdb/config/i386/nbsd.mt
    gdb/config/i386/nbsdelf.mh
    gdb/config/i386/nbsdelf.mt
    gdb/config/i386/ncr3000.mh
    gdb/config/i386/ncr3000.mt
    gdb/config/i386/nm-cygwin.h
    gdb/config/i386/nm-fbsd.h
    gdb/config/i386/nm-gnu.h
    gdb/config/i386/nm-go32.h
    gdb/config/i386/nm-i386.h
    gdb/config/i386/nm-i386aix.h
    gdb/config/i386/nm-i386bsd.h
    gdb/config/i386/nm-i386lynx.h
    gdb/config/i386/nm-i386mach.h
    gdb/config/i386/nm-i386sco.h
    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-nbsdelf.h
    gdb/config/i386/nm-obsd.h
    gdb/config/i386/nm-ptx4.h
    gdb/config/i386/nm-symmetry.h
    gdb/config/i386/nm-x86-64.h
    gdb/config/i386/obsd.mh
    gdb/config/i386/obsd.mt
    gdb/config/i386/ptx.mh
    gdb/config/i386/ptx.mt
    gdb/config/i386/ptx4.mh
    gdb/config/i386/ptx4.mt
    gdb/config/i386/symmetry.mh
    gdb/config/i386/symmetry.mt
    gdb/config/i386/tm-cygwin.h
    gdb/config/i386/tm-fbsd.h
    gdb/config/i386/tm-go32.h
    gdb/config/i386/tm-i386.h
    gdb/config/i386/tm-i386aix.h
    gdb/config/i386/tm-i386bsd.h
    gdb/config/i386/tm-i386gnu.h
    gdb/config/i386/tm-i386lynx.h
    gdb/config/i386/tm-i386m3.h
    gdb/config/i386/tm-i386mk.h
    gdb/config/i386/tm-i386nw.h
    gdb/config/i386/tm-i386os9k.h
    gdb/config/i386/tm-i386sco5.h
    gdb/config/i386/tm-i386sol2.h
    gdb/config/i386/tm-i386v.h
    gdb/config/i386/tm-i386v4.h
    gdb/config/i386/tm-i386v42mp.h
    gdb/config/i386/tm-linux.h
    gdb/config/i386/tm-nbsd.h
    gdb/config/i386/tm-nbsdelf.h
    gdb/config/i386/tm-obsd.h
    gdb/config/i386/tm-ptx.h
    gdb/config/i386/tm-ptx4.h
    gdb/config/i386/tm-symmetry.h
    gdb/config/i386/tm-vxworks.h
    gdb/config/i386/vxworks.mt
    gdb/config/i386/x86-64linux.mh
    gdb/config/i386/x86-64linux.mt
    gdb/config/i386/xm-cygwin.h
    gdb/config/i386/xm-go32.h
    gdb/config/i386/xm-i386.h
    gdb/config/i386/xm-i386aix.h
    gdb/config/i386/xm-i386bsd.h
    gdb/config/i386/xm-i386gnu.h
    gdb/config/i386/xm-i386m3.h
    gdb/config/i386/xm-i386mach.h
    gdb/config/i386/xm-i386mk.h
    gdb/config/i386/xm-i386sco.h
    gdb/config/i386/xm-i386v.h
    gdb/config/i386/xm-i386v32.h
    gdb/config/i386/xm-i386v4.h
    gdb/config/i386/xm-nbsd.h
    gdb/config/i386/xm-ptx.h
    gdb/config/i386/xm-ptx4.h
    gdb/config/i386/xm-symmetry.h
    gdb/config/i960/mon960.mt
    gdb/config/i960/nindy960.mt
    gdb/config/i960/tm-i960.h
    gdb/config/i960/tm-mon960.h
    gdb/config/i960/tm-nindy960.h
    gdb/config/i960/tm-vx960.h
    gdb/config/i960/vxworks960.mt
    gdb/config/ia64/aix.mh
    gdb/config/ia64/aix.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/nbsd.mh
    gdb/config/m68k/nbsd.mt
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    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-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
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    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
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    gdb/config/m68k/xm-sun3.h
    gdb/config/m68k/xm-sun3os4.h
    gdb/config/m88k/delta88.mh
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    gdb/config/m88k/delta88v4.mh
    gdb/config/m88k/delta88v4.mt
    gdb/config/m88k/m88k.mh
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    gdb/config/m88k/tm-delta88.h
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    gdb/config/m88k/tm-m88k.h
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    gdb/config/m88k/xm-delta88v4.h
    gdb/config/m88k/xm-dgux.h
    gdb/config/mcore/mcore.mt
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    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
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    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/news-mips.mh
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    gdb/config/mips/nm-irix5.h
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    gdb/config/mips/nm-linux.h
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    gdb/config/mips/nm-riscos.h
    gdb/config/mips/riscos.mh
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    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
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    gdb/config/mips/tm-mips64.h
    gdb/config/mips/tm-mipsm3.h
    gdb/config/mips/tm-mipsv4.h
    gdb/config/mips/tm-tx39.h
    gdb/config/mips/tm-tx39l.h
    gdb/config/mips/tm-vr4100.h
    gdb/config/mips/tm-vr4300.h
    gdb/config/mips/tm-vr4300el.h
    gdb/config/mips/tm-vr4xxx.h
    gdb/config/mips/tm-vr4xxxel.h
    gdb/config/mips/tm-vr5000.h
    gdb/config/mips/tm-vr5000el.h
    gdb/config/mips/tm-vxmips.h
    gdb/config/mips/tm-wince.h
    gdb/config/mips/tx39.mt
    gdb/config/mips/tx39l.mt
    gdb/config/mips/vr4100.mt
    gdb/config/mips/vr4300.mt
    gdb/config/mips/vr4300el.mt
    gdb/config/mips/vr4xxx.mt
    gdb/config/mips/vr4xxxel.mt
    gdb/config/mips/vr5000.mt
    gdb/config/mips/vr5000el.mt
    gdb/config/mips/vxmips.mt
    gdb/config/mips/wince.mt
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    gdb/config/mips/xm-irix4.h
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    gdb/config/mips/xm-linux.h
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    gdb/config/mips/xm-mipsm3.h
    gdb/config/mips/xm-mipsv4.h
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    gdb/config/mn10200/mn10200.mt
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    gdb/config/mn10300/mn10300.mt
    gdb/config/nm-gnu.h
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    gdb/config/nm-lynx.h
    gdb/config/nm-m3.h
    gdb/config/nm-nbsd.h
    gdb/config/nm-sysv4.h
    gdb/config/none/nm-none.h
    gdb/config/none/none.mh
    gdb/config/none/none.mt
    gdb/config/none/tm-none.h
    gdb/config/none/xm-none.h
    gdb/config/ns32k/nbsd.mh
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    gdb/config/ns32k/tm-umax.h
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    gdb/config/pa/hppa64.mt
    gdb/config/pa/hppabsd.mh
    gdb/config/pa/hppabsd.mt
    gdb/config/pa/hppahpux.mh
    gdb/config/pa/hppahpux.mt
    gdb/config/pa/hppaosf.mh
    gdb/config/pa/hppaosf.mt
    gdb/config/pa/hppapro.mt
    gdb/config/pa/hpux1020.mh
    gdb/config/pa/hpux1020.mt
    gdb/config/pa/hpux11.mh
    gdb/config/pa/hpux11.mt
    gdb/config/pa/hpux11w.mh
    gdb/config/pa/hpux11w.mt
    gdb/config/pa/nm-hppab.h
    gdb/config/pa/nm-hppah.h
    gdb/config/pa/nm-hppah11.h
    gdb/config/pa/nm-hppao.h
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    gdb/config/pa/tm-hppab.h
    gdb/config/pa/tm-hppah.h
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    gdb/config/powerpc/aix.mh
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    gdb/config/powerpc/gdbserve.mt
    gdb/config/powerpc/linux.mh
    gdb/config/powerpc/linux.mt
    gdb/config/powerpc/nbsd.mh
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    gdb/config/powerpc/ppc-eabi.mt
    gdb/config/powerpc/ppc-sim.mt
    gdb/config/powerpc/ppcle-eabi.mt
    gdb/config/powerpc/ppcle-sim.mt
    gdb/config/powerpc/tm-linux.h
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    gdb/config/powerpc/tm-vxworks.h
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    gdb/config/powerpc/xm-linux.h
    gdb/config/romp/rtbsd.mh
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    gdb/config/rs6000/aix4.mh
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    gdb/config/rs6000/rs6000.mh
    gdb/config/rs6000/rs6000.mt
    gdb/config/rs6000/rs6000lynx.mh
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    gdb/config/s390/nm-linux.h
    gdb/config/s390/s390.mh
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    gdb/config/s390/s390x.mt
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    gdb/config/sh/embed.mt
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    gdb/config/sh/nbsd.mh
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    gdb/config/sparc/fbsd.mh
    gdb/config/sparc/fbsd.mt
    gdb/config/sparc/linux.mh
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    gdb/config/sparc/nbsd.mh
    gdb/config/sparc/nbsd.mt
    gdb/config/sparc/nbsdelf.mh
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    gdb/config/sparc/nm-nbsdelf.h
    gdb/config/sparc/nm-sparclynx.h
    gdb/config/sparc/nm-sun4os4.h
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    gdb/config/sparc/sp64.mt
    gdb/config/sparc/sp64linux.mt
    gdb/config/sparc/sp64sim.mt
    gdb/config/sparc/sp64sol2.mt
    gdb/config/sparc/sparc-em.mt
    gdb/config/sparc/sparclet.mt
    gdb/config/sparc/sparclite.mt
    gdb/config/sparc/sparclynx.mh
    gdb/config/sparc/sparclynx.mt
    gdb/config/sparc/sun4os4.mh
    gdb/config/sparc/sun4os4.mt
    gdb/config/sparc/sun4sol2.mh
    gdb/config/sparc/sun4sol2.mt
    gdb/config/sparc/tm-fbsd.h
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    gdb/config/sparc/tm-nbsd.h
    gdb/config/sparc/tm-sp64.h
    gdb/config/sparc/tm-sp64linux.h
    gdb/config/sparc/tm-sp64sim.h
    gdb/config/sparc/tm-sparc.h
    gdb/config/sparc/tm-sparclet.h
    gdb/config/sparc/tm-sparclite.h
    gdb/config/sparc/tm-sparclynx.h
    gdb/config/sparc/tm-spc-em.h
    gdb/config/sparc/tm-sun4os4.h
    gdb/config/sparc/tm-sun4sol2.h
    gdb/config/sparc/tm-vxsparc.h
    gdb/config/sparc/vxsparc.mt
    gdb/config/sparc/xm-linux.h
    gdb/config/sparc/xm-nbsd.h
    gdb/config/sparc/xm-sun4sol2.h
    gdb/config/tm-linux.h
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    gdb/config/tm-sunos.h
    gdb/config/tm-sysv4.h
    gdb/config/tm-vxworks.h
    gdb/config/v850/tm-v850.h
    gdb/config/v850/v850.mt
    gdb/config/vax/nm-vax.h
    gdb/config/vax/tm-vax.h
    gdb/config/vax/vax.mt
    gdb/config/vax/vaxbsd.mh
    gdb/config/vax/vaxult.mh
    gdb/config/vax/vaxult2.mh
    gdb/config/vax/xm-vax.h
    gdb/config/vax/xm-vaxbsd.h
    gdb/config/vax/xm-vaxult.h
    gdb/config/vax/xm-vaxult2.h
    gdb/config/xm-aix4.h
    gdb/config/xm-nbsd.h
    gdb/config/xm-sysv4.h
    gdb/config/xstormy16/xstormy16.mt
    gdb/config/z8k/tm-z8k.h
    gdb/config/z8k/z8k.mt
    gdb/configure
    gdb/configure.host
    gdb/configure.in
    gdb/configure.tgt
    gdb/copying.awk
    gdb/copying.c
    gdb/core-aout.c
    gdb/core-regset.c
    gdb/core-sol2.c
    gdb/corefile.c
    gdb/corelow.c
    gdb/cp-abi.c
    gdb/cp-abi.h
    gdb/cp-valprint.c
    gdb/cpu32bug-rom.c
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    sim/z8k/compedb3.c
    sim/z8k/config.in
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    sim/z8k/inlines.h
    sim/z8k/list.c
    sim/z8k/mem.c
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    sim/z8k/quick.c
    sim/z8k/sim.h
    sim/z8k/support.c
    sim/z8k/syscall.h
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1 files changed, 0 insertions, 5857 deletions

diff --git a/gdb/procfs.c b/gdb/procfs.c
deleted file mode 100644
index 55e0496bc78..00000000000
--- a/gdb/procfs.c
+++ /dev/null
@@ -1,5857 +0,0 @@
-/* Machine independent support for SVR4 /proc (process file system) for GDB.
-   Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
-   Written by Michael Snyder at Cygnus Solutions.
-   Based on work by Fred Fish, Stu Grossman, Geoff Noer, and others.
-
-This file is part of GDB.
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software Foundation, 
-Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
-
-#include "defs.h"
-#include "inferior.h"
-#include "target.h"
-#include "gdbcore.h"
-#include "elf-bfd.h"		/* for elfcore_write_* */
-#include "gdbcmd.h"
-#include "gdbthread.h"
-
-#if defined (NEW_PROC_API)
-#define _STRUCTURED_PROC 1	/* Should be done by configure script. */
-#endif
-
-#include <sys/procfs.h>
-#ifdef HAVE_SYS_FAULT_H
-#include <sys/fault.h>
-#endif
-#ifdef HAVE_SYS_SYSCALL_H
-#include <sys/syscall.h>
-#endif
-#include <sys/errno.h>
-#include <sys/wait.h>
-#include <signal.h>
-#include <ctype.h>
-
-/* 
- * PROCFS.C
- *
- * This module provides the interface between GDB and the
- * /proc file system, which is used on many versions of Unix
- * as a means for debuggers to control other processes.
- * Examples of the systems that use this interface are:
- *   Irix
- *   Solaris
- *   OSF
- *   Unixware
- *   AIX5
- *
- * /proc works by imitating a file system: you open a simulated file
- * that represents the process you wish to interact with, and
- * perform operations on that "file" in order to examine or change
- * the state of the other process.
- *
- * The most important thing to know about /proc and this module
- * is that there are two very different interfaces to /proc:
- *   One that uses the ioctl system call, and
- *   another that uses read and write system calls.
- * This module has to support both /proc interfaces.  This means
- * that there are two different ways of doing every basic operation.
- *
- * In order to keep most of the code simple and clean, I have 
- * defined an interface "layer" which hides all these system calls.
- * An ifdef (NEW_PROC_API) determines which interface we are using,
- * and most or all occurrances of this ifdef should be confined to
- * this interface layer.
- */
-
-
-/* Determine which /proc API we are using:
-   The ioctl API defines PIOCSTATUS, while 
-   the read/write (multiple fd) API never does.  */
-
-#ifdef NEW_PROC_API
-#include <sys/types.h>
-#include "gdb_dirent.h"	/* opendir/readdir, for listing the LWP's */
-#endif
-
-#include <fcntl.h>	/* for O_RDONLY */
-#include <unistd.h>	/* for "X_OK" */
-#include "gdb_stat.h"	/* for struct stat */
-
-/* Note: procfs-utils.h must be included after the above system header
-   files, because it redefines various system calls using macros.
-   This may be incompatible with the prototype declarations.  */
-
-#include "proc-utils.h"
-
-/* Prototypes for supply_gregset etc. */
-#include "gregset.h"
-
-/* =================== TARGET_OPS "MODULE" =================== */
-
-/*
- * This module defines the GDB target vector and its methods.
- */
-
-static void procfs_open (char *, int);
-static void procfs_attach (char *, int);
-static void procfs_detach (char *, int);
-static void procfs_resume (ptid_t, int, enum target_signal);
-static int procfs_can_run (void);
-static void procfs_stop (void);
-static void procfs_files_info (struct target_ops *);
-static void procfs_fetch_registers (int);
-static void procfs_store_registers (int);
-static void procfs_notice_signals (ptid_t);
-static void procfs_prepare_to_store (void);
-static void procfs_kill_inferior (void);
-static void procfs_mourn_inferior (void);
-static void procfs_create_inferior (char *, char *, char **);
-static ptid_t procfs_wait (ptid_t, struct target_waitstatus *);
-static int procfs_xfer_memory (CORE_ADDR, char *, int, int,
-			       struct mem_attrib *attrib,
-			       struct target_ops *);
-
-static int procfs_thread_alive (ptid_t);
-
-void procfs_find_new_threads (void);
-char *procfs_pid_to_str (ptid_t);
-
-static int proc_find_memory_regions (int (*) (CORE_ADDR, 
-					      unsigned long, 
-					      int, int, int, 
-					      void *), 
-				     void *);
-
-static char * procfs_make_note_section (bfd *, int *);
-
-struct target_ops procfs_ops;		/* the target vector */
-
-static void
-init_procfs_ops (void)
-{
-  procfs_ops.to_shortname           = "procfs";
-  procfs_ops.to_longname            = "Unix /proc child process";
-  procfs_ops.to_doc                 = 
-    "Unix /proc child process (started by the \"run\" command).";
-  procfs_ops.to_open                = procfs_open;
-  procfs_ops.to_can_run             = procfs_can_run;
-  procfs_ops.to_create_inferior     = procfs_create_inferior;
-  procfs_ops.to_kill                = procfs_kill_inferior;
-  procfs_ops.to_mourn_inferior      = procfs_mourn_inferior;
-  procfs_ops.to_attach              = procfs_attach;
-  procfs_ops.to_detach              = procfs_detach;
-  procfs_ops.to_wait                = procfs_wait;
-  procfs_ops.to_resume              = procfs_resume;
-  procfs_ops.to_prepare_to_store    = procfs_prepare_to_store;
-  procfs_ops.to_fetch_registers     = procfs_fetch_registers;
-  procfs_ops.to_store_registers     = procfs_store_registers;
-  procfs_ops.to_xfer_memory         = procfs_xfer_memory;
-  procfs_ops.to_insert_breakpoint   =  memory_insert_breakpoint;
-  procfs_ops.to_remove_breakpoint   =  memory_remove_breakpoint;
-  procfs_ops.to_notice_signals      = procfs_notice_signals;
-  procfs_ops.to_files_info          = procfs_files_info;
-  procfs_ops.to_stop                = procfs_stop;
-
-  procfs_ops.to_terminal_init       = terminal_init_inferior;
-  procfs_ops.to_terminal_inferior   = terminal_inferior;
-  procfs_ops.to_terminal_ours_for_output = terminal_ours_for_output;
-  procfs_ops.to_terminal_ours       = terminal_ours;
-  procfs_ops.to_terminal_info       = child_terminal_info;
-
-  procfs_ops.to_find_new_threads    = procfs_find_new_threads;
-  procfs_ops.to_thread_alive        = procfs_thread_alive;
-  procfs_ops.to_pid_to_str          = procfs_pid_to_str;
-
-  procfs_ops.to_has_all_memory      = 1;
-  procfs_ops.to_has_memory          = 1;
-  procfs_ops.to_has_execution       = 1;
-  procfs_ops.to_has_stack           = 1;
-  procfs_ops.to_has_registers       = 1;
-  procfs_ops.to_stratum             = process_stratum;
-  procfs_ops.to_has_thread_control  = tc_schedlock;
-  procfs_ops.to_find_memory_regions = proc_find_memory_regions;
-  procfs_ops.to_make_corefile_notes = procfs_make_note_section;
-  procfs_ops.to_magic               = OPS_MAGIC;
-}
-
-/* =================== END, TARGET_OPS "MODULE" =================== */
-
-/*
- * World Unification:
- *
- * Put any typedefs, defines etc. here that are required for
- * the unification of code that handles different versions of /proc.
- */
-
-#ifdef NEW_PROC_API		/* Solaris 7 && 8 method for watchpoints */
-#ifdef WA_READ
-     enum { READ_WATCHFLAG  = WA_READ, 
-	    WRITE_WATCHFLAG = WA_WRITE,
-	    EXEC_WATCHFLAG  = WA_EXEC,
-	    AFTER_WATCHFLAG = WA_TRAPAFTER
-     };
-#endif
-#else				/* Irix method for watchpoints */
-     enum { READ_WATCHFLAG  = MA_READ, 
-	    WRITE_WATCHFLAG = MA_WRITE,
-	    EXEC_WATCHFLAG  = MA_EXEC,
-	    AFTER_WATCHFLAG = 0		/* trapafter not implemented */
-     };
-#endif
-
-/* gdb_sigset_t */
-#ifdef HAVE_PR_SIGSET_T
-typedef pr_sigset_t gdb_sigset_t;
-#else
-typedef sigset_t gdb_sigset_t;
-#endif
-
-/* sigaction */
-#ifdef HAVE_PR_SIGACTION64_T
-typedef pr_sigaction64_t gdb_sigaction_t;
-#else
-typedef struct sigaction gdb_sigaction_t;
-#endif
-
-/* siginfo */
-#ifdef HAVE_PR_SIGINFO64_T
-typedef pr_siginfo64_t gdb_siginfo_t;
-#else
-typedef struct siginfo gdb_siginfo_t;
-#endif
-
-/* gdb_premptysysset */
-#ifdef premptysysset
-#define gdb_premptysysset premptysysset
-#else
-#define gdb_premptysysset premptyset
-#endif
-
-/* praddsysset */
-#ifdef praddsysset
-#define gdb_praddsysset praddsysset
-#else
-#define gdb_praddsysset praddset
-#endif
-
-/* prdelsysset */
-#ifdef prdelsysset
-#define gdb_prdelsysset prdelsysset
-#else
-#define gdb_prdelsysset prdelset
-#endif
-
-/* prissyssetmember */
-#ifdef prissyssetmember
-#define gdb_pr_issyssetmember prissyssetmember
-#else
-#define gdb_pr_issyssetmember prismember
-#endif
-
-/* As a feature test, saying ``#if HAVE_PRSYSENT_T'' everywhere isn't
-   as intuitively descriptive as it could be, so we'll define
-   DYNAMIC_SYSCALLS to mean the same thing.  Anyway, at the time of
-   this writing, this feature is only found on AIX5 systems and
-   basically means that the set of syscalls is not fixed.  I.e,
-   there's no nice table that one can #include to get all of the
-   syscall numbers.  Instead, they're stored in /proc/PID/sysent
-   for each process.  We are at least guaranteed that they won't
-   change over the lifetime of the process.  But each process could
-   (in theory) have different syscall numbers.
-*/
-#ifdef HAVE_PRSYSENT_T
-#define DYNAMIC_SYSCALLS
-#endif
-
-
-
-/* =================== STRUCT PROCINFO "MODULE" =================== */
-
-     /* FIXME: this comment will soon be out of date W.R.T. threads.  */
-
-/* The procinfo struct is a wrapper to hold all the state information
-   concerning a /proc process.  There should be exactly one procinfo
-   for each process, and since GDB currently can debug only one
-   process at a time, that means there should be only one procinfo.
-   All of the LWP's of a process can be accessed indirectly thru the
-   single process procinfo.
-
-   However, against the day when GDB may debug more than one process,
-   this data structure is kept in a list (which for now will hold no
-   more than one member), and many functions will have a pointer to a
-   procinfo as an argument.
-
-   There will be a separate procinfo structure for use by the (not yet
-   implemented) "info proc" command, so that we can print useful
-   information about any random process without interfering with the
-   inferior's procinfo information. */
-
-#ifdef NEW_PROC_API
-/* format strings for /proc paths */
-# ifndef CTL_PROC_NAME_FMT
-#  define MAIN_PROC_NAME_FMT   "/proc/%d"
-#  define CTL_PROC_NAME_FMT    "/proc/%d/ctl"
-#  define AS_PROC_NAME_FMT     "/proc/%d/as"
-#  define MAP_PROC_NAME_FMT    "/proc/%d/map"
-#  define STATUS_PROC_NAME_FMT "/proc/%d/status"
-#  define MAX_PROC_NAME_SIZE sizeof("/proc/99999/lwp/8096/lstatus")
-# endif
-/* the name of the proc status struct depends on the implementation */
-typedef pstatus_t   gdb_prstatus_t;
-typedef lwpstatus_t gdb_lwpstatus_t;
-#else /* ! NEW_PROC_API */
-/* format strings for /proc paths */
-# ifndef CTL_PROC_NAME_FMT
-#  define MAIN_PROC_NAME_FMT   "/proc/%05d"
-#  define CTL_PROC_NAME_FMT    "/proc/%05d"
-#  define AS_PROC_NAME_FMT     "/proc/%05d"
-#  define MAP_PROC_NAME_FMT    "/proc/%05d"
-#  define STATUS_PROC_NAME_FMT "/proc/%05d"
-#  define MAX_PROC_NAME_SIZE sizeof("/proc/ttttppppp")
-# endif
-/* the name of the proc status struct depends on the implementation */
-typedef prstatus_t gdb_prstatus_t;
-typedef prstatus_t gdb_lwpstatus_t;
-#endif /* NEW_PROC_API */
-
-typedef struct procinfo {
-  struct procinfo *next;
-  int pid;			/* Process ID    */
-  int tid;			/* Thread/LWP id */
-
-  /* process state */
-  int was_stopped;
-  int ignore_next_sigstop;
-
-  /* The following four fd fields may be identical, or may contain 
-     several different fd's, depending on the version of /proc
-     (old ioctl or new read/write).  */
-
-  int ctl_fd;			/* File descriptor for /proc control file */
-  /*
-   * The next three file descriptors are actually only needed in the
-   * read/write, multiple-file-descriptor implemenation (NEW_PROC_API).
-   * However, to avoid a bunch of #ifdefs in the code, we will use 
-   * them uniformly by (in the case of the ioctl single-file-descriptor
-   * implementation) filling them with copies of the control fd.
-   */
-  int status_fd;		/* File descriptor for /proc status file */
-  int as_fd;			/* File descriptor for /proc as file */
-
-  char pathname[MAX_PROC_NAME_SIZE];	/* Pathname to /proc entry */
-
-  fltset_t saved_fltset;	/* Saved traced hardware fault set */
-  gdb_sigset_t saved_sigset;	/* Saved traced signal set */
-  gdb_sigset_t saved_sighold;	/* Saved held signal set */
-  sysset_t *saved_exitset;	/* Saved traced system call exit set */
-  sysset_t *saved_entryset;	/* Saved traced system call entry set */
-
-  gdb_prstatus_t prstatus;	/* Current process status info */
-
-#ifndef NEW_PROC_API
-  gdb_fpregset_t fpregset;	/* Current floating point registers */
-#endif
-
-#ifdef DYNAMIC_SYSCALLS
-  int num_syscalls;		/* Total number of syscalls */
-  char **syscall_names;		/* Syscall number to name map */
-#endif
-  
-  struct procinfo *thread_list;
-
-  int status_valid : 1;
-  int gregs_valid  : 1;
-  int fpregs_valid : 1;
-  int threads_valid: 1;
-} procinfo;
-
-static char errmsg[128];	/* shared error msg buffer */
-
-/* Function prototypes for procinfo module: */
-
-static procinfo *find_procinfo_or_die (int pid, int tid);
-static procinfo *find_procinfo (int pid, int tid);
-static procinfo *create_procinfo (int pid, int tid);
-static void destroy_procinfo (procinfo * p);
-static void do_destroy_procinfo_cleanup (void *);
-static void dead_procinfo (procinfo * p, char *msg, int killp);
-static int open_procinfo_files (procinfo * p, int which);
-static void close_procinfo_files (procinfo * p);
-static int sysset_t_size (procinfo *p);
-static sysset_t *sysset_t_alloc (procinfo * pi);
-#ifdef DYNAMIC_SYSCALLS
-static void load_syscalls (procinfo *pi);
-static void free_syscalls (procinfo *pi);
-static int find_syscall (procinfo *pi, char *name);
-#endif /* DYNAMIC_SYSCALLS */
-
-/* The head of the procinfo list: */
-static procinfo * procinfo_list;
-
-/*
- * Function: find_procinfo
- *
- * Search the procinfo list.
- *
- * Returns: pointer to procinfo, or NULL if not found.
- */
-
-static procinfo * 
-find_procinfo (int pid, int tid)
-{
-  procinfo *pi;
-
-  for (pi = procinfo_list; pi; pi = pi->next)
-    if (pi->pid == pid)
-      break;
-
-  if (pi)
-    if (tid)
-      {
-	/* Don't check threads_valid.  If we're updating the
-	   thread_list, we want to find whatever threads are already
-	   here.  This means that in general it is the caller's
-	   responsibility to check threads_valid and update before
-	   calling find_procinfo, if the caller wants to find a new
-	   thread. */
-
-	for (pi = pi->thread_list; pi; pi = pi->next)
-	  if (pi->tid == tid)
-	    break;
-      }
-
-  return pi;
-}
-
-/*
- * Function: find_procinfo_or_die
- *
- * Calls find_procinfo, but errors on failure.
- */
-
-static procinfo *
-find_procinfo_or_die (int pid, int tid)
-{
-  procinfo *pi = find_procinfo (pid, tid);
-
-  if (pi == NULL)
-    {
-      if (tid)
-	error ("procfs: couldn't find pid %d (kernel thread %d) in procinfo list.", 
-	       pid, tid);
-      else
-	error ("procfs: couldn't find pid %d in procinfo list.", pid);
-    }
-  return pi;
-}
-
-/* open_with_retry() is a wrapper for open().  The appropriate
-   open() call is attempted; if unsuccessful, it will be retried as
-   many times as needed for the EAGAIN and EINTR conditions.
-   
-   For other conditions, open_with_retry() will retry the open() a
-   limited number of times.  In addition, a short sleep is imposed
-   prior to retrying the open().  The reason for this sleep is to give
-   the kernel a chance to catch up and create the file in question in
-   the event that GDB "wins" the race to open a file before the kernel
-   has created it.  */
-   
-static int
-open_with_retry (const char *pathname, int flags)
-{
-  int retries_remaining, status;
-
-  retries_remaining = 2;
-
-  while (1)
-    {
-      status = open (pathname, flags);
-
-      if (status >= 0 || retries_remaining == 0)
-	break;
-      else if (errno != EINTR && errno != EAGAIN)
-	{
-	  retries_remaining--;
-	  sleep (1);
-	}
-    }
-
-  return status;
-}
-
-/*
- * Function: open_procinfo_files
- *
- * Open the file descriptor for the process or LWP.
- * ifdef NEW_PROC_API, we only open the control file descriptor;
- * the others are opened lazily as needed.
- * else (if not NEW_PROC_API), there is only one real
- * file descriptor, but we keep multiple copies of it so that
- * the code that uses them does not have to be #ifdef'd.
- *
- * Return: file descriptor, or zero for failure.
- */
-
-enum { FD_CTL, FD_STATUS, FD_AS };
-
-static int
-open_procinfo_files (procinfo *pi, int which)
-{
-#ifdef NEW_PROC_API
-  char tmp[MAX_PROC_NAME_SIZE];
-#endif
-  int  fd;
-
-  /* 
-   * This function is getting ALMOST long enough to break up into several.
-   * Here is some rationale:
-   *
-   * NEW_PROC_API (Solaris 2.6, Solaris 2.7, Unixware):
-   *   There are several file descriptors that may need to be open 
-   *   for any given process or LWP.  The ones we're intereted in are:
-   *     - control	 (ctl)	  write-only	change the state
-   *     - status	 (status) read-only	query the state
-   *     - address space (as)     read/write	access memory
-   *     - map           (map)    read-only     virtual addr map
-   *   Most of these are opened lazily as they are needed.
-   *   The pathnames for the 'files' for an LWP look slightly 
-   *   different from those of a first-class process:
-   *     Pathnames for a process (<proc-id>):
-   *       /proc/<proc-id>/ctl
-   *       /proc/<proc-id>/status
-   *       /proc/<proc-id>/as
-   *       /proc/<proc-id>/map
-   *     Pathnames for an LWP (lwp-id):
-   *       /proc/<proc-id>/lwp/<lwp-id>/lwpctl
-   *       /proc/<proc-id>/lwp/<lwp-id>/lwpstatus
-   *   An LWP has no map or address space file descriptor, since
-   *   the memory map and address space are shared by all LWPs.
-   *
-   * Everyone else (Solaris 2.5, Irix, OSF)
-   *   There is only one file descriptor for each process or LWP.
-   *   For convenience, we copy the same file descriptor into all
-   *   three fields of the procinfo struct (ctl_fd, status_fd, and
-   *   as_fd, see NEW_PROC_API above) so that code that uses them
-   *   doesn't need any #ifdef's.  
-   *     Pathname for all:
-   *       /proc/<proc-id>
-   *
-   *   Solaris 2.5 LWP's:
-   *     Each LWP has an independent file descriptor, but these 
-   *     are not obtained via the 'open' system call like the rest:
-   *     instead, they're obtained thru an ioctl call (PIOCOPENLWP)
-   *     to the file descriptor of the parent process.
-   *
-   *   OSF threads:
-   *     These do not even have their own independent file descriptor.
-   *     All operations are carried out on the file descriptor of the
-   *     parent process.  Therefore we just call open again for each
-   *     thread, getting a new handle for the same 'file'.
-   */
-
-#ifdef NEW_PROC_API
-  /*
-   * In this case, there are several different file descriptors that
-   * we might be asked to open.  The control file descriptor will be
-   * opened early, but the others will be opened lazily as they are
-   * needed.
-   */
-
-  strcpy (tmp, pi->pathname);
-  switch (which) {	/* which file descriptor to open? */
-  case FD_CTL:
-    if (pi->tid)
-      strcat (tmp, "/lwpctl");
-    else
-      strcat (tmp, "/ctl");
-    fd = open_with_retry (tmp, O_WRONLY);
-    if (fd <= 0)
-      return 0;		/* fail */
-    pi->ctl_fd = fd;
-    break;
-  case FD_AS:
-    if (pi->tid)
-      return 0;		/* there is no 'as' file descriptor for an lwp */
-    strcat (tmp, "/as");
-    fd = open_with_retry (tmp, O_RDWR);
-    if (fd <= 0)
-      return 0;		/* fail */
-    pi->as_fd = fd;
-    break;
-  case FD_STATUS:
-    if (pi->tid)
-      strcat (tmp, "/lwpstatus");
-    else
-      strcat (tmp, "/status");
-    fd = open_with_retry (tmp, O_RDONLY);
-    if (fd <= 0)
-      return 0;		/* fail */
-    pi->status_fd = fd;
-    break;
-  default:
-    return 0;		/* unknown file descriptor */
-  }
-#else  /* not NEW_PROC_API */
-  /*
-   * In this case, there is only one file descriptor for each procinfo
-   * (ie. each process or LWP).  In fact, only the file descriptor for
-   * the process can actually be opened by an 'open' system call.
-   * The ones for the LWPs have to be obtained thru an IOCTL call 
-   * on the process's file descriptor. 
-   *
-   * For convenience, we copy each procinfo's single file descriptor
-   * into all of the fields occupied by the several file descriptors 
-   * of the NEW_PROC_API implementation.  That way, the code that uses
-   * them can be written without ifdefs.
-   */
-
-
-#ifdef PIOCTSTATUS	/* OSF */
-  /* Only one FD; just open it. */
-  if ((fd = open_with_retry (pi->pathname, O_RDWR)) == 0)
-    return 0;
-#else			/* Sol 2.5, Irix, other? */
-  if (pi->tid == 0)	/* Master procinfo for the process */
-    {
-      fd = open_with_retry (pi->pathname, O_RDWR);
-      if (fd <= 0)
-	return 0;	/* fail */
-    }
-  else			/* LWP thread procinfo */
-    {
-#ifdef PIOCOPENLWP	/* Sol 2.5, thread/LWP */
-      procinfo *process;
-      int lwpid = pi->tid;
-
-      /* Find the procinfo for the entire process. */
-      if ((process = find_procinfo (pi->pid, 0)) == NULL)
-	return 0;	/* fail */
-
-      /* Now obtain the file descriptor for the LWP. */
-      if ((fd = ioctl (process->ctl_fd, PIOCOPENLWP, &lwpid)) <= 0)
-	return 0;	/* fail */
-#else			/* Irix, other? */
-      return 0;		/* Don't know how to open threads */
-#endif	/* Sol 2.5 PIOCOPENLWP */
-    }
-#endif	/* OSF     PIOCTSTATUS */
-  pi->ctl_fd = pi->as_fd = pi->status_fd = fd;
-#endif	/* NEW_PROC_API */
-
-  return 1;		/* success */
-}
-
-/*
- * Function: create_procinfo
- *
- * Allocate a data structure and link it into the procinfo list.
- * (First tries to find a pre-existing one (FIXME: why?)
- *
- * Return: pointer to new procinfo struct.
- */
-
-static procinfo *
-create_procinfo (int pid, int tid)
-{
-  procinfo *pi, *parent;
-
-  if ((pi = find_procinfo (pid, tid)))
-    return pi;			/* Already exists, nothing to do. */
-
-  /* find parent before doing malloc, to save having to cleanup */
-  if (tid != 0)
-    parent = find_procinfo_or_die (pid, 0);	/* FIXME: should I
-						   create it if it
-						   doesn't exist yet? */
-
-  pi = (procinfo *) xmalloc (sizeof (procinfo));
-  memset (pi, 0, sizeof (procinfo));
-  pi->pid = pid;
-  pi->tid = tid;
-
-#ifdef DYNAMIC_SYSCALLS
-  load_syscalls (pi);
-#endif
-
-  pi->saved_entryset = sysset_t_alloc (pi);
-  pi->saved_exitset = sysset_t_alloc (pi);
-
-  /* Chain into list.  */
-  if (tid == 0)
-    {
-      sprintf (pi->pathname, MAIN_PROC_NAME_FMT, pid);
-      pi->next = procinfo_list;
-      procinfo_list = pi;
-    }
-  else
-    {
-#ifdef NEW_PROC_API
-      sprintf (pi->pathname, "/proc/%05d/lwp/%d", pid, tid);
-#else
-      sprintf (pi->pathname, MAIN_PROC_NAME_FMT, pid);
-#endif
-      pi->next = parent->thread_list;
-      parent->thread_list = pi;
-    }
-  return pi;
-}
-
-/*
- * Function: close_procinfo_files
- *
- * Close all file descriptors associated with the procinfo
- */
-
-static void
-close_procinfo_files (procinfo *pi)
-{
-  if (pi->ctl_fd > 0)
-    close (pi->ctl_fd);
-#ifdef NEW_PROC_API
-  if (pi->as_fd > 0)
-    close (pi->as_fd);
-  if (pi->status_fd > 0)
-    close (pi->status_fd);
-#endif
-  pi->ctl_fd = pi->as_fd = pi->status_fd = 0;
-}
-
-/*
- * Function: destroy_procinfo
- *
- * Destructor function.  Close, unlink and deallocate the object.
- */
-
-static void
-destroy_one_procinfo (procinfo **list, procinfo *pi)
-{
-  procinfo *ptr;
-
-  /* Step one: unlink the procinfo from its list */
-  if (pi == *list)
-    *list = pi->next;
-  else 
-    for (ptr = *list; ptr; ptr = ptr->next)
-      if (ptr->next == pi)
-	{
-	  ptr->next =  pi->next;
-	  break;
-	}
-
-  /* Step two: close any open file descriptors */
-  close_procinfo_files (pi);
-
-  /* Step three: free the memory. */
-#ifdef DYNAMIC_SYSCALLS
-  free_syscalls (pi);
-#endif
-  xfree (pi->saved_entryset);
-  xfree (pi->saved_exitset);
-  xfree (pi);
-}
-
-static void
-destroy_procinfo (procinfo *pi)
-{
-  procinfo *tmp;
-
-  if (pi->tid != 0)	/* destroy a thread procinfo */
-    {
-      tmp = find_procinfo (pi->pid, 0);	/* find the parent process */
-      destroy_one_procinfo (&tmp->thread_list, pi);
-    }
-  else			/* destroy a process procinfo and all its threads */
-    {
-      /* First destroy the children, if any; */
-      while (pi->thread_list != NULL)
-	destroy_one_procinfo (&pi->thread_list, pi->thread_list);
-      /* Then destroy the parent.  Genocide!!!  */
-      destroy_one_procinfo (&procinfo_list, pi);
-    }
-}
-
-static void
-do_destroy_procinfo_cleanup (void *pi)
-{
-  destroy_procinfo (pi);
-}
-
-enum { NOKILL, KILL };
-
-/*
- * Function: dead_procinfo
- *
- * To be called on a non_recoverable error for a procinfo.
- * Prints error messages, optionally sends a SIGKILL to the process,
- * then destroys the data structure.
- */
-
-static void
-dead_procinfo (procinfo *pi, char *msg, int kill_p)
-{
-  char procfile[80];
-
-  if (pi->pathname)
-    {
-      print_sys_errmsg (pi->pathname, errno);
-    }
-  else
-    {
-      sprintf (procfile, "process %d", pi->pid);
-      print_sys_errmsg (procfile, errno);
-    }
-  if (kill_p == KILL)
-    kill (pi->pid, SIGKILL);
-
-  destroy_procinfo (pi);
-  error (msg);
-}
-
-/*
- * Function: sysset_t_size
- *
- * Returns the (complete) size of a sysset_t struct.  Normally, this
- * is just sizeof (syset_t), but in the case of Monterey/64, the actual
- * size of sysset_t isn't known until runtime.
- */
-
-static int
-sysset_t_size (procinfo * pi)
-{
-#ifndef DYNAMIC_SYSCALLS
-  return sizeof (sysset_t);
-#else
-  return sizeof (sysset_t) - sizeof (uint64_t)
-    + sizeof (uint64_t) * ((pi->num_syscalls + (8 * sizeof (uint64_t) - 1))
-			   / (8 * sizeof (uint64_t)));
-#endif
-}
-
-/* Function: sysset_t_alloc
-  
-   Allocate and (partially) initialize a sysset_t struct.  */
-
-static sysset_t *
-sysset_t_alloc (procinfo * pi)
-{
-  sysset_t *ret;
-  int size = sysset_t_size (pi);
-  ret = xmalloc (size);
-#ifdef DYNAMIC_SYSCALLS
-  ret->pr_size = (pi->num_syscalls + (8 * sizeof (uint64_t) - 1))
-                 / (8 * sizeof (uint64_t));
-#endif
-  return ret;
-}
-
-#ifdef DYNAMIC_SYSCALLS
-
-/* Function: load_syscalls
-  
-   Extract syscall numbers and names from /proc/<pid>/sysent.  Initialize
-   pi->num_syscalls with the number of syscalls and pi->syscall_names
-   with the names.  (Certain numbers may be skipped in which case the
-   names for these numbers will be left as NULL.) */
-
-#define MAX_SYSCALL_NAME_LENGTH 256
-#define MAX_SYSCALLS 65536
-
-static void
-load_syscalls (procinfo *pi)
-{
-  char pathname[MAX_PROC_NAME_SIZE];
-  int sysent_fd;
-  prsysent_t header;
-  prsyscall_t *syscalls;
-  int i, size, maxcall;
-
-  pi->num_syscalls = 0;
-  pi->syscall_names = 0;
-
-  /* Open the file descriptor for the sysent file */
-  sprintf (pathname, "/proc/%d/sysent", pi->pid);
-  sysent_fd = open_with_retry (pathname, O_RDONLY);
-  if (sysent_fd < 0)
-    {
-      error ("load_syscalls: Can't open /proc/%d/sysent", pi->pid);
-    }
-
-  size = sizeof header - sizeof (prsyscall_t);
-  if (read (sysent_fd, &header, size) != size)
-    {
-      error ("load_syscalls: Error reading /proc/%d/sysent", pi->pid);
-    }
-
-  if (header.pr_nsyscalls == 0)
-    {
-      error ("load_syscalls: /proc/%d/sysent contains no syscalls!", pi->pid);
-    }
-
-  size = header.pr_nsyscalls * sizeof (prsyscall_t);
-  syscalls = xmalloc (size);
-
-  if (read (sysent_fd, syscalls, size) != size)
-    {
-      xfree (syscalls);
-      error ("load_syscalls: Error reading /proc/%d/sysent", pi->pid);
-    }
-
-  /* Find maximum syscall number.  This may not be the same as
-     pr_nsyscalls since that value refers to the number of entries
-     in the table.  (Also, the docs indicate that some system
-     call numbers may be skipped.) */
-
-  maxcall = syscalls[0].pr_number;
-
-  for (i = 1; i <  header.pr_nsyscalls; i++)
-    if (syscalls[i].pr_number > maxcall
-        && syscalls[i].pr_nameoff > 0
-	&& syscalls[i].pr_number < MAX_SYSCALLS)
-      maxcall = syscalls[i].pr_number;
-
-  pi->num_syscalls = maxcall+1;
-  pi->syscall_names = xmalloc (pi->num_syscalls * sizeof (char *));
-
-  for (i = 0; i < pi->num_syscalls; i++)
-    pi->syscall_names[i] = NULL;
-
-  /* Read the syscall names in */
-  for (i = 0; i < header.pr_nsyscalls; i++)
-    {
-      char namebuf[MAX_SYSCALL_NAME_LENGTH];
-      int nread;
-      int callnum;
-
-      if (syscalls[i].pr_number >= MAX_SYSCALLS
-          || syscalls[i].pr_number < 0
-	  || syscalls[i].pr_nameoff <= 0
-	  || (lseek (sysent_fd, (off_t) syscalls[i].pr_nameoff, SEEK_SET)
-                                       != (off_t) syscalls[i].pr_nameoff))
-	continue;
-
-      nread = read (sysent_fd, namebuf, sizeof namebuf);
-      if (nread <= 0)
-	continue;
-
-      callnum = syscalls[i].pr_number;
-
-      if (pi->syscall_names[callnum] != NULL)
-	{
-	  /* FIXME: Generate warning */
-	  continue;
-	}
-
-      namebuf[nread-1] = '\0';
-      size = strlen (namebuf) + 1;
-      pi->syscall_names[callnum] = xmalloc (size);
-      strncpy (pi->syscall_names[callnum], namebuf, size-1);
-      pi->syscall_names[callnum][size-1] = '\0';
-    }
-  
-  close (sysent_fd);
-  xfree (syscalls);
-}
-
-/* Function: free_syscalls
-   
-   Free the space allocated for the syscall names from the procinfo
-   structure.  */
-
-static void
-free_syscalls (procinfo *pi)
-{
-  if (pi->syscall_names)
-    {
-      int i;
-
-      for (i = 0; i < pi->num_syscalls; i++)
-	if (pi->syscall_names[i] != NULL)
-	  xfree (pi->syscall_names[i]);
-
-      xfree (pi->syscall_names);
-      pi->syscall_names = 0;
-    }
-}
-
-/* Function: find_syscall
-
-   Given a name, look up (and return) the corresponding syscall number.
-   If no match is found, return -1.  */
-   
-static int
-find_syscall (procinfo *pi, char *name)
-{
-  int i;
-  for (i = 0; i < pi->num_syscalls; i++)
-    {
-      if (pi->syscall_names[i] && strcmp (name, pi->syscall_names[i]) == 0)
-	return i;
-    }
-  return -1;
-}
-#endif
-
-/* =================== END, STRUCT PROCINFO "MODULE" =================== */
-
-/* ===================  /proc  "MODULE" =================== */
-
-/*
- * This "module" is the interface layer between the /proc system API
- * and the gdb target vector functions.  This layer consists of 
- * access functions that encapsulate each of the basic operations
- * that we need to use from the /proc API.
- *
- * The main motivation for this layer is to hide the fact that
- * there are two very different implementations of the /proc API.
- * Rather than have a bunch of #ifdefs all thru the gdb target vector
- * functions, we do our best to hide them all in here.
- */
-
-int proc_get_status (procinfo * pi);
-long proc_flags (procinfo * pi);
-int proc_why (procinfo * pi);
-int proc_what (procinfo * pi);
-int proc_set_run_on_last_close (procinfo * pi);
-int proc_unset_run_on_last_close (procinfo * pi);
-int proc_set_inherit_on_fork (procinfo * pi);
-int proc_unset_inherit_on_fork (procinfo * pi);
-int proc_set_async (procinfo * pi);
-int proc_unset_async (procinfo * pi);
-int proc_stop_process (procinfo * pi);
-int proc_trace_signal (procinfo * pi, int signo);
-int proc_ignore_signal (procinfo * pi, int signo);
-int proc_clear_current_fault (procinfo * pi);
-int proc_set_current_signal (procinfo * pi, int signo);
-int proc_clear_current_signal (procinfo * pi);
-int proc_set_gregs (procinfo * pi);
-int proc_set_fpregs (procinfo * pi);
-int proc_wait_for_stop (procinfo * pi);
-int proc_run_process (procinfo * pi, int step, int signo);
-int proc_kill (procinfo * pi, int signo);
-int proc_parent_pid (procinfo * pi);
-int proc_get_nthreads (procinfo * pi);
-int proc_get_current_thread (procinfo * pi);
-int proc_set_held_signals (procinfo * pi, gdb_sigset_t * sighold);
-int proc_set_traced_sysexit (procinfo * pi, sysset_t * sysset);
-int proc_set_traced_sysentry (procinfo * pi, sysset_t * sysset);
-int proc_set_traced_faults (procinfo * pi, fltset_t * fltset);
-int proc_set_traced_signals (procinfo * pi, gdb_sigset_t * sigset);
-
-int proc_update_threads (procinfo * pi);
-int proc_iterate_over_threads (procinfo * pi,
-			       int (*func) (procinfo *, procinfo *, void *),
-			       void *ptr);
-
-gdb_gregset_t *proc_get_gregs (procinfo * pi);
-gdb_fpregset_t *proc_get_fpregs (procinfo * pi);
-sysset_t *proc_get_traced_sysexit (procinfo * pi, sysset_t * save);
-sysset_t *proc_get_traced_sysentry (procinfo * pi, sysset_t * save);
-fltset_t *proc_get_traced_faults (procinfo * pi, fltset_t * save);
-gdb_sigset_t *proc_get_traced_signals (procinfo * pi, gdb_sigset_t * save);
-gdb_sigset_t *proc_get_held_signals (procinfo * pi, gdb_sigset_t * save);
-gdb_sigset_t *proc_get_pending_signals (procinfo * pi, gdb_sigset_t * save);
-gdb_sigaction_t *proc_get_signal_actions (procinfo * pi, gdb_sigaction_t *save);
-
-void proc_warn (procinfo * pi, char *func, int line);
-void proc_error (procinfo * pi, char *func, int line);
-
-void
-proc_warn (procinfo *pi, char *func, int line)
-{
-  sprintf (errmsg, "procfs: %s line %d, %s", func, line, pi->pathname);
-  print_sys_errmsg (errmsg, errno);
-}
-
-void
-proc_error (procinfo *pi, char *func, int line)
-{
-  sprintf (errmsg, "procfs: %s line %d, %s", func, line, pi->pathname);
-  perror_with_name (errmsg);
-}
-
-/*
- * Function: proc_get_status
- *
- * Updates the status struct in the procinfo.
- * There is a 'valid' flag, to let other functions know when
- * this function needs to be called (so the status is only
- * read when it is needed).  The status file descriptor is
- * also only opened when it is needed.
- *
- * Return: non-zero for success, zero for failure.
- */
-
-int
-proc_get_status (procinfo *pi)
-{
-  /* Status file descriptor is opened "lazily" */
-  if (pi->status_fd == 0 &&
-      open_procinfo_files (pi, FD_STATUS) == 0)
-    {
-      pi->status_valid = 0;
-      return 0;
-    }
-
-#ifdef NEW_PROC_API
-  if (lseek (pi->status_fd, 0, SEEK_SET) < 0)
-    pi->status_valid = 0;			/* fail */
-  else
-    {
-      /* Sigh... I have to read a different data structure, 
-	 depending on whether this is a main process or an LWP. */
-      if (pi->tid)
-	pi->status_valid = (read (pi->status_fd, 
-				  (char *) &pi->prstatus.pr_lwp, 
-				  sizeof (lwpstatus_t))
-			    == sizeof (lwpstatus_t));
-      else
-	{
-	  pi->status_valid = (read (pi->status_fd, 
-				    (char *) &pi->prstatus,
-				    sizeof (gdb_prstatus_t))
-			      == sizeof (gdb_prstatus_t));
-#if 0 /*def UNIXWARE*/
-	  if (pi->status_valid &&
-	      (pi->prstatus.pr_lwp.pr_flags & PR_ISTOP) &&
-	      pi->prstatus.pr_lwp.pr_why == PR_REQUESTED)
-	    /* Unixware peculiarity -- read the damn thing again! */
-	    pi->status_valid = (read (pi->status_fd, 
-				      (char *) &pi->prstatus,
-				      sizeof (gdb_prstatus_t))
-				== sizeof (gdb_prstatus_t));
-#endif /* UNIXWARE */
-	}
-    }
-#else	/* ioctl method */
-#ifdef PIOCTSTATUS	/* osf */
-  if (pi->tid == 0)	/* main process */
-    {
-      /* Just read the danged status.  Now isn't that simple? */
-      pi->status_valid = 
-	(ioctl (pi->status_fd, PIOCSTATUS, &pi->prstatus) >= 0);
-    }
-  else
-    {
-      int win;
-      struct {
-	long pr_count;
-	tid_t pr_error_thread;
-	struct prstatus status;
-      } thread_status;
-
-      thread_status.pr_count = 1;
-      thread_status.status.pr_tid = pi->tid;
-      win = (ioctl (pi->status_fd, PIOCTSTATUS, &thread_status) >= 0);
-      if (win)
-	{
-	  memcpy (&pi->prstatus, &thread_status.status, 
-		  sizeof (pi->prstatus));
-	  pi->status_valid = 1;
-	}
-    }
-#else
-  /* Just read the danged status.  Now isn't that simple? */
-  pi->status_valid = (ioctl (pi->status_fd, PIOCSTATUS, &pi->prstatus) >= 0);
-#endif
-#endif
-
-  if (pi->status_valid)
-    {
-      PROC_PRETTYFPRINT_STATUS (proc_flags (pi), 
-				proc_why (pi),
-				proc_what (pi), 
-				proc_get_current_thread (pi));
-    }
-
-  /* The status struct includes general regs, so mark them valid too */
-  pi->gregs_valid  = pi->status_valid;
-#ifdef NEW_PROC_API
-  /* In the read/write multiple-fd model, 
-     the status struct includes the fp regs too, so mark them valid too */
-  pi->fpregs_valid = pi->status_valid;
-#endif
-  return pi->status_valid;	/* True if success, false if failure. */
-}
-
-/*
- * Function: proc_flags
- *
- * returns the process flags (pr_flags field).
- */ 
-
-long
-proc_flags (procinfo *pi)
-{
-  if (!pi->status_valid)
-    if (!proc_get_status (pi))
-      return 0;	/* FIXME: not a good failure value (but what is?) */
-
-#ifdef NEW_PROC_API
-# ifdef UNIXWARE
-  /* UnixWare 7.1 puts process status flags, e.g. PR_ASYNC, in
-     pstatus_t and LWP status flags, e.g. PR_STOPPED, in lwpstatus_t.
-     The two sets of flags don't overlap. */
-  return pi->prstatus.pr_flags | pi->prstatus.pr_lwp.pr_flags;
-# else
-  return pi->prstatus.pr_lwp.pr_flags;
-# endif
-#else
-  return pi->prstatus.pr_flags;
-#endif
-}
-
-/*
- * Function: proc_why
- *
- * returns the pr_why field (why the process stopped).
- */
-
-int
-proc_why (procinfo *pi)
-{
-  if (!pi->status_valid)
-    if (!proc_get_status (pi))
-      return 0;	/* FIXME: not a good failure value (but what is?) */
-
-#ifdef NEW_PROC_API
-  return pi->prstatus.pr_lwp.pr_why;
-#else
-  return pi->prstatus.pr_why;
-#endif
-}
-
-/*
- * Function: proc_what
- *
- * returns the pr_what field (details of why the process stopped).
- */
-
-int
-proc_what (procinfo *pi)
-{
-  if (!pi->status_valid)
-    if (!proc_get_status (pi))
-      return 0;	/* FIXME: not a good failure value (but what is?) */
-
-#ifdef NEW_PROC_API
-  return pi->prstatus.pr_lwp.pr_what;
-#else
-  return pi->prstatus.pr_what;
-#endif
-}
-
-#ifndef PIOCSSPCACT	/* The following is not supported on OSF.  */
-/*
- * Function: proc_nsysarg
- *
- * returns the pr_nsysarg field (number of args to the current syscall).
- */
-
-int
-proc_nsysarg (procinfo *pi)
-{
-  if (!pi->status_valid)
-    if (!proc_get_status (pi))
-      return 0;
-  
-#ifdef NEW_PROC_API
-  return pi->prstatus.pr_lwp.pr_nsysarg;
-#else
-  return pi->prstatus.pr_nsysarg;
-#endif
-}
-
-/*
- * Function: proc_sysargs
- *
- * returns the pr_sysarg field (pointer to the arguments of current syscall).
- */
-
-long *
-proc_sysargs (procinfo *pi)
-{
-  if (!pi->status_valid)
-    if (!proc_get_status (pi))
-      return NULL;
-  
-#ifdef NEW_PROC_API
-  return (long *) &pi->prstatus.pr_lwp.pr_sysarg;
-#else
-  return (long *) &pi->prstatus.pr_sysarg;
-#endif
-}
-
-/*
- * Function: proc_syscall
- *
- * returns the pr_syscall field (id of current syscall if we are in one).
- */
-
-int
-proc_syscall (procinfo *pi)
-{
-  if (!pi->status_valid)
-    if (!proc_get_status (pi))
-      return 0;
-  
-#ifdef NEW_PROC_API
-  return pi->prstatus.pr_lwp.pr_syscall;
-#else
-  return pi->prstatus.pr_syscall;
-#endif
-}
-#endif /* PIOCSSPCACT */
-
-/*
- * Function: proc_cursig:
- *
- * returns the pr_cursig field (current signal).
- */
-
-long
-proc_cursig (struct procinfo *pi)
-{
-  if (!pi->status_valid)
-    if (!proc_get_status (pi))
-      return 0;	/* FIXME: not a good failure value (but what is?) */
-
-#ifdef NEW_PROC_API
-  return pi->prstatus.pr_lwp.pr_cursig;
-#else
-  return pi->prstatus.pr_cursig;
-#endif
-}
-
-/*
- * Function: proc_modify_flag 
- *
- *  === I appologize for the messiness of this function. 
- *  === This is an area where the different versions of
- *  === /proc are more inconsistent than usual.     MVS
- *
- * Set or reset any of the following process flags:
- *    PR_FORK	-- forked child will inherit trace flags
- *    PR_RLC	-- traced process runs when last /proc file closed.
- *    PR_KLC    -- traced process is killed when last /proc file closed.
- *    PR_ASYNC	-- LWP's get to run/stop independently.
- *
- * There are three methods for doing this function:
- * 1) Newest: read/write [PCSET/PCRESET/PCUNSET]
- *    [Sol6, Sol7, UW]
- * 2) Middle: PIOCSET/PIOCRESET
- *    [Irix, Sol5]
- * 3) Oldest: PIOCSFORK/PIOCRFORK/PIOCSRLC/PIOCRRLC
- *    [OSF, Sol5]
- *
- * Note: Irix does not define PR_ASYNC.
- * Note: OSF  does not define PR_KLC.
- * Note: OSF  is the only one that can ONLY use the oldest method.
- *
- * Arguments: 
- *    pi   -- the procinfo
- *    flag -- one of PR_FORK, PR_RLC, or PR_ASYNC
- *    mode -- 1 for set, 0 for reset.
- *
- * Returns non-zero for success, zero for failure.
- */
-
-enum { FLAG_RESET, FLAG_SET };
-
-static int
-proc_modify_flag (procinfo *pi, long flag, long mode)
-{
-  long win = 0;		/* default to fail */
-
-  /* 
-   * These operations affect the process as a whole, and applying 
-   * them to an individual LWP has the same meaning as applying them 
-   * to the main process.  Therefore, if we're ever called with a 
-   * pointer to an LWP's procinfo, let's substitute the process's 
-   * procinfo and avoid opening the LWP's file descriptor 
-   * unnecessarily.  
-   */
-
-  if (pi->pid != 0)
-    pi = find_procinfo_or_die (pi->pid, 0);
-
-#ifdef NEW_PROC_API	/* Newest method: UnixWare and newer Solarii */
-  /* First normalize the PCUNSET/PCRESET command opcode 
-     (which for no obvious reason has a different definition
-     from one operating system to the next...)  */
-#ifdef  PCUNSET
-#define GDBRESET PCUNSET
-#else
-#ifdef  PCRESET
-#define GDBRESET PCRESET
-#endif
-#endif
-  {
-    procfs_ctl_t arg[2];
-
-    if (mode == FLAG_SET)	/* Set the flag (RLC, FORK, or ASYNC) */
-      arg[0] = PCSET;
-    else			/* Reset the flag */
-      arg[0] = GDBRESET;
-
-    arg[1] = flag;
-    win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg));
-  }
-#else
-#ifdef PIOCSET		/* Irix/Sol5 method */
-  if (mode == FLAG_SET)	/* Set the flag (hopefully RLC, FORK, or ASYNC) */
-    {
-      win = (ioctl (pi->ctl_fd, PIOCSET, &flag)   >= 0);
-    }
-  else			/* Reset the flag */
-    {
-      win = (ioctl (pi->ctl_fd, PIOCRESET, &flag) >= 0);
-    }
-
-#else
-#ifdef PIOCSRLC		/* Oldest method: OSF */
-  switch (flag) {
-  case PR_RLC:
-    if (mode == FLAG_SET)	/* Set run-on-last-close */
-      {
-	win = (ioctl (pi->ctl_fd, PIOCSRLC, NULL) >= 0);
-      }
-    else			/* Clear run-on-last-close */
-      {
-	win = (ioctl (pi->ctl_fd, PIOCRRLC, NULL) >= 0);
-      }
-    break;
-  case PR_FORK:
-    if (mode == FLAG_SET)	/* Set inherit-on-fork */
-      {
-	win = (ioctl (pi->ctl_fd, PIOCSFORK, NULL) >= 0);
-      }
-    else			/* Clear inherit-on-fork */
-      {
-	win = (ioctl (pi->ctl_fd, PIOCRFORK, NULL) >= 0);
-      }
-    break;
-  default:
-    win = 0;		/* fail -- unknown flag (can't do PR_ASYNC) */
-    break;
-  }
-#endif
-#endif
-#endif
-#undef GDBRESET
-  /* The above operation renders the procinfo's cached pstatus obsolete. */
-  pi->status_valid = 0;
-
-  if (!win)
-    warning ("procfs: modify_flag failed to turn %s %s", 
-	     flag == PR_FORK  ? "PR_FORK"  :
-	     flag == PR_RLC   ? "PR_RLC"   :
-#ifdef PR_ASYNC
-	     flag == PR_ASYNC ? "PR_ASYNC" :
-#endif
-#ifdef PR_KLC
-	     flag == PR_KLC   ? "PR_KLC"   :
-#endif
-	     "<unknown flag>",
-	     mode == FLAG_RESET ? "off" : "on");
-
-  return win;
-}
-
-/*
- * Function: proc_set_run_on_last_close
- *
- * Set the run_on_last_close flag.
- * Process with all threads will become runnable
- * when debugger closes all /proc fds.
- *
- * Returns non-zero for success, zero for failure.
- */
-
-int
-proc_set_run_on_last_close (procinfo *pi)
-{
-  return proc_modify_flag (pi, PR_RLC, FLAG_SET);
-}
-
-/*
- * Function: proc_unset_run_on_last_close
- *
- * Reset the run_on_last_close flag.
- * Process will NOT become runnable
- * when debugger closes its file handles.
- *
- * Returns non-zero for success, zero for failure.
- */
-
-int
-proc_unset_run_on_last_close (procinfo *pi)
-{
-  return proc_modify_flag (pi, PR_RLC, FLAG_RESET);
-}
-
-#ifdef PR_KLC
-/*
- * Function: proc_set_kill_on_last_close
- *
- * Set the kill_on_last_close flag.
- * Process with all threads will be killed when debugger
- * closes all /proc fds (or debugger exits or dies).
- *
- * Returns non-zero for success, zero for failure.
- */
-
-int
-proc_set_kill_on_last_close (procinfo *pi)
-{
-  return proc_modify_flag (pi, PR_KLC, FLAG_SET);
-}
-
-/*
- * Function: proc_unset_kill_on_last_close
- *
- * Reset the kill_on_last_close flag.
- * Process will NOT be killed when debugger 
- * closes its file handles (or exits or dies).
- *
- * Returns non-zero for success, zero for failure.
- */
-
-int
-proc_unset_kill_on_last_close (procinfo *pi)
-{
-  return proc_modify_flag (pi, PR_KLC, FLAG_RESET);
-}
-#endif /* PR_KLC */
-
-/*
- * Function: proc_set_inherit_on_fork
- *
- * Set inherit_on_fork flag.
- * If the process forks a child while we are registered for events
- * in the parent, then we will also recieve events from the child.
- *
- * Returns non-zero for success, zero for failure.
- */
-
-int
-proc_set_inherit_on_fork (procinfo *pi)
-{
-  return proc_modify_flag (pi, PR_FORK, FLAG_SET);
-}
-
-/*
- * Function: proc_unset_inherit_on_fork
- *
- * Reset inherit_on_fork flag.
- * If the process forks a child while we are registered for events
- * in the parent, then we will NOT recieve events from the child.
- *
- * Returns non-zero for success, zero for failure.
- */
-
-int
-proc_unset_inherit_on_fork (procinfo *pi)
-{
-  return proc_modify_flag (pi, PR_FORK, FLAG_RESET);
-}
-
-#ifdef PR_ASYNC
-/*
- * Function: proc_set_async
- *
- * Set PR_ASYNC flag.
- * If one LWP stops because of a debug event (signal etc.), 
- * the remaining LWPs will continue to run.
- *
- * Returns non-zero for success, zero for failure.
- */
-
-int
-proc_set_async (procinfo *pi)
-{
-  return proc_modify_flag (pi, PR_ASYNC, FLAG_SET);
-}
-
-/*
- * Function: proc_unset_async
- *
- * Reset PR_ASYNC flag.
- * If one LWP stops because of a debug event (signal etc.),
- * then all other LWPs will stop as well.
- *
- * Returns non-zero for success, zero for failure.
- */
-
-int
-proc_unset_async (procinfo *pi)
-{
-  return proc_modify_flag (pi, PR_ASYNC, FLAG_RESET);
-}
-#endif /* PR_ASYNC */
-
-/*
- * Function: proc_stop_process
- *
- * Request the process/LWP to stop.  Does not wait.
- * Returns non-zero for success, zero for failure. 
- */
-
-int
-proc_stop_process (procinfo *pi)
-{
-  int win;
-
-  /*
-   * We might conceivably apply this operation to an LWP, and
-   * the LWP's ctl file descriptor might not be open.
-   */
-
-  if (pi->ctl_fd == 0 &&
-      open_procinfo_files (pi, FD_CTL) == 0)
-    return 0;
-  else
-    {
-#ifdef NEW_PROC_API
-      procfs_ctl_t cmd = PCSTOP;
-      win = (write (pi->ctl_fd, (char *) &cmd, sizeof (cmd)) == sizeof (cmd));
-#else	/* ioctl method */
-      win = (ioctl (pi->ctl_fd, PIOCSTOP, &pi->prstatus) >= 0);
-      /* Note: the call also reads the prstatus.  */
-      if (win)
-	{
-	  pi->status_valid = 1;
-	  PROC_PRETTYFPRINT_STATUS (proc_flags (pi), 
-				    proc_why (pi),
-				    proc_what (pi), 
-				    proc_get_current_thread (pi));
-	}
-#endif
-    }
-
-  return win;
-}
-
-/*
- * Function: proc_wait_for_stop
- *
- * Wait for the process or LWP to stop (block until it does).
- * Returns non-zero for success, zero for failure. 
- */
-
-int
-proc_wait_for_stop (procinfo *pi)
-{
-  int win;
-
-  /*
-   * We should never have to apply this operation to any procinfo
-   * except the one for the main process.  If that ever changes
-   * for any reason, then take out the following clause and 
-   * replace it with one that makes sure the ctl_fd is open.
-   */
-  
-  if (pi->tid != 0)
-    pi = find_procinfo_or_die (pi->pid, 0);
-
-#ifdef NEW_PROC_API
-  {
-    procfs_ctl_t cmd = PCWSTOP;
-    win = (write (pi->ctl_fd, (char *) &cmd, sizeof (cmd)) == sizeof (cmd));
-    /* We been runnin' and we stopped -- need to update status.  */
-    pi->status_valid = 0;
-  }
-#else	/* ioctl method */
-  win = (ioctl (pi->ctl_fd, PIOCWSTOP, &pi->prstatus) >= 0);
-  /* Above call also refreshes the prstatus.  */
-  if (win)
-    {
-      pi->status_valid = 1;
-      PROC_PRETTYFPRINT_STATUS (proc_flags (pi), 
-				proc_why (pi),
-				proc_what (pi), 
-				proc_get_current_thread (pi));
-    }
-#endif
-
-  return win;
-}
-
-/*
- * Function: proc_run_process
- *
- * Make the process or LWP runnable.
- * Options (not all are implemented):
- *   - single-step
- *   - clear current fault
- *   - clear current signal
- *   - abort the current system call
- *   - stop as soon as finished with system call
- *   - (ioctl): set traced signal set
- *   - (ioctl): set held   signal set
- *   - (ioctl): set traced fault  set
- *   - (ioctl): set start pc (vaddr)
- * Always clear the current fault.
- * Clear the current signal if 'signo' is zero.
- *
- * Arguments:
- *   pi		the process or LWP to operate on.
- *   step	if true, set the process or LWP to trap after one instr.
- *   signo	if zero, clear the current signal if any.
- *		if non-zero, set the current signal to this one.
- *
- * Returns non-zero for success, zero for failure. 
- */
-
-int
-proc_run_process (procinfo *pi, int step, int signo)
-{
-  int win;
-  int runflags;
-
-  /*
-   * We will probably have to apply this operation to individual threads,
-   * so make sure the control file descriptor is open.
-   */
-  
-  if (pi->ctl_fd == 0 &&
-      open_procinfo_files (pi, FD_CTL) == 0)
-    {
-      return 0;
-    }
-
-  runflags    = PRCFAULT;	/* always clear current fault  */
-  if (step)
-    runflags |= PRSTEP;
-  if (signo == 0)
-    runflags |= PRCSIG;
-  else if (signo != -1)		/* -1 means do nothing W.R.T. signals */
-    proc_set_current_signal (pi, signo);
-
-#ifdef NEW_PROC_API
-  {
-    procfs_ctl_t cmd[2];
-
-    cmd[0]  = PCRUN;
-    cmd[1]  = runflags;
-    win = (write (pi->ctl_fd, (char *) &cmd, sizeof (cmd)) == sizeof (cmd));
-  }
-#else	/* ioctl method */
-  {
-    prrun_t prrun;
-
-    memset (&prrun, 0, sizeof (prrun));
-    prrun.pr_flags  = runflags;
-    win = (ioctl (pi->ctl_fd, PIOCRUN, &prrun) >= 0);
-  }
-#endif
-
-  return win;
-}
-
-/*
- * Function: proc_set_traced_signals
- *
- * Register to trace signals in the process or LWP.
- * Returns non-zero for success, zero for failure. 
- */
-
-int
-proc_set_traced_signals (procinfo *pi, gdb_sigset_t *sigset)
-{
-  int win;
-
-  /*
-   * We should never have to apply this operation to any procinfo
-   * except the one for the main process.  If that ever changes
-   * for any reason, then take out the following clause and 
-   * replace it with one that makes sure the ctl_fd is open.
-   */
-  
-  if (pi->tid != 0)
-    pi = find_procinfo_or_die (pi->pid, 0);
-
-#ifdef NEW_PROC_API
-  {
-    struct {
-      procfs_ctl_t cmd;
-      /* Use char array to avoid alignment issues.  */
-      char sigset[sizeof (gdb_sigset_t)];
-    } arg;
-
-    arg.cmd = PCSTRACE;
-    memcpy (&arg.sigset, sigset, sizeof (gdb_sigset_t));
-
-    win = (write (pi->ctl_fd, (char *) &arg, sizeof (arg)) == sizeof (arg));
-  }
-#else	/* ioctl method */
-  win = (ioctl (pi->ctl_fd, PIOCSTRACE, sigset) >= 0);
-#endif
-  /* The above operation renders the procinfo's cached pstatus obsolete. */
-  pi->status_valid = 0;
-
-  if (!win)
-    warning ("procfs: set_traced_signals failed");
-  return win;
-}
-
-/*
- * Function: proc_set_traced_faults
- *
- * Register to trace hardware faults in the process or LWP.
- * Returns non-zero for success, zero for failure. 
- */
-
-int
-proc_set_traced_faults (procinfo *pi, fltset_t *fltset)
-{
-  int win;
-
-  /*
-   * We should never have to apply this operation to any procinfo
-   * except the one for the main process.  If that ever changes
-   * for any reason, then take out the following clause and 
-   * replace it with one that makes sure the ctl_fd is open.
-   */
-  
-  if (pi->tid != 0)
-    pi = find_procinfo_or_die (pi->pid, 0);
-
-#ifdef NEW_PROC_API
-  {
-    struct {
-      procfs_ctl_t cmd;
-      /* Use char array to avoid alignment issues.  */
-      char fltset[sizeof (fltset_t)];
-    } arg;
-
-    arg.cmd = PCSFAULT;
-    memcpy (&arg.fltset, fltset, sizeof (fltset_t));
-
-    win = (write (pi->ctl_fd, (char *) &arg, sizeof (arg)) == sizeof (arg));
-  }
-#else	/* ioctl method */
-  win = (ioctl (pi->ctl_fd, PIOCSFAULT, fltset) >= 0);
-#endif
-  /* The above operation renders the procinfo's cached pstatus obsolete. */
-  pi->status_valid = 0;
-
-  return win;
-}
-
-/*
- * Function: proc_set_traced_sysentry
- *
- * Register to trace entry to system calls in the process or LWP.
- * Returns non-zero for success, zero for failure. 
- */
-
-int
-proc_set_traced_sysentry (procinfo *pi, sysset_t *sysset)
-{
-  int win;
-
-  /*
-   * We should never have to apply this operation to any procinfo
-   * except the one for the main process.  If that ever changes
-   * for any reason, then take out the following clause and 
-   * replace it with one that makes sure the ctl_fd is open.
-   */
-  
-  if (pi->tid != 0)
-    pi = find_procinfo_or_die (pi->pid, 0);
-
-#ifdef NEW_PROC_API
-  {
-    struct gdb_proc_ctl_pcsentry {
-      procfs_ctl_t cmd;
-      /* Use char array to avoid alignment issues.  */
-      char sysset[sizeof (sysset_t)];
-    } *argp;
-    int argp_size = sizeof (struct gdb_proc_ctl_pcsentry)
-                  - sizeof (sysset_t)
-		  + sysset_t_size (pi);
-
-    argp = xmalloc (argp_size);
-
-    argp->cmd = PCSENTRY;
-    memcpy (&argp->sysset, sysset, sysset_t_size (pi));
-
-    win = (write (pi->ctl_fd, (char *) argp, argp_size) == argp_size);
-    xfree (argp);
-  }
-#else	/* ioctl method */
-  win = (ioctl (pi->ctl_fd, PIOCSENTRY, sysset) >= 0);
-#endif
-  /* The above operation renders the procinfo's cached pstatus obsolete. */
-  pi->status_valid = 0;
-     
-  return win;
-}
-
-/*
- * Function: proc_set_traced_sysexit
- *
- * Register to trace exit from system calls in the process or LWP.
- * Returns non-zero for success, zero for failure. 
- */
-
-int
-proc_set_traced_sysexit (procinfo *pi, sysset_t *sysset)
-{
-  int win;
-
-  /*
-   * We should never have to apply this operation to any procinfo
-   * except the one for the main process.  If that ever changes
-   * for any reason, then take out the following clause and 
-   * replace it with one that makes sure the ctl_fd is open.
-   */
-  
-  if (pi->tid != 0)
-    pi = find_procinfo_or_die (pi->pid, 0);
-
-#ifdef NEW_PROC_API
-  {
-    struct gdb_proc_ctl_pcsexit {
-      procfs_ctl_t cmd;
-      /* Use char array to avoid alignment issues.  */
-      char sysset[sizeof (sysset_t)];
-    } *argp;
-    int argp_size = sizeof (struct gdb_proc_ctl_pcsexit)
-                  - sizeof (sysset_t)
-		  + sysset_t_size (pi);
-
-    argp = xmalloc (argp_size);
-
-    argp->cmd = PCSEXIT;
-    memcpy (&argp->sysset, sysset, sysset_t_size (pi));
-
-    win = (write (pi->ctl_fd, (char *) argp, argp_size) == argp_size);
-    xfree (argp);
-  }
-#else	/* ioctl method */
-  win = (ioctl (pi->ctl_fd, PIOCSEXIT, sysset) >= 0);
-#endif
-  /* The above operation renders the procinfo's cached pstatus obsolete. */
-  pi->status_valid = 0;
-
-  return win;
-}
-
-/*
- * Function: proc_set_held_signals
- *
- * Specify the set of blocked / held signals in the process or LWP.
- * Returns non-zero for success, zero for failure. 
- */
-
-int
-proc_set_held_signals (procinfo *pi, gdb_sigset_t *sighold)
-{
-  int win;
-
-  /*
-   * We should never have to apply this operation to any procinfo
-   * except the one for the main process.  If that ever changes
-   * for any reason, then take out the following clause and 
-   * replace it with one that makes sure the ctl_fd is open.
-   */
-  
-  if (pi->tid != 0)
-    pi = find_procinfo_or_die (pi->pid, 0);
-
-#ifdef NEW_PROC_API
-  {
-    struct {
-      procfs_ctl_t cmd;
-      /* Use char array to avoid alignment issues.  */
-      char hold[sizeof (gdb_sigset_t)];
-    } arg;
-
-    arg.cmd  = PCSHOLD;
-    memcpy (&arg.hold, sighold, sizeof (gdb_sigset_t));
-    win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg));
-  }
-#else
-  win = (ioctl (pi->ctl_fd, PIOCSHOLD, sighold) >= 0);
-#endif
-  /* The above operation renders the procinfo's cached pstatus obsolete. */
-  pi->status_valid = 0;
-
-  return win;
-}
-
-/*
- * Function: proc_get_pending_signals
- *
- * returns the set of signals that are pending in the process or LWP.
- * Will also copy the sigset if 'save' is non-zero.
- */
-
-gdb_sigset_t *
-proc_get_pending_signals (procinfo *pi, gdb_sigset_t *save)
-{
-  gdb_sigset_t *ret = NULL;
-
-  /*
-   * We should never have to apply this operation to any procinfo
-   * except the one for the main process.  If that ever changes
-   * for any reason, then take out the following clause and 
-   * replace it with one that makes sure the ctl_fd is open.
-   */
-  
-  if (pi->tid != 0)
-    pi = find_procinfo_or_die (pi->pid, 0);
-
-  if (!pi->status_valid)
-    if (!proc_get_status (pi))
-      return NULL;
-
-#ifdef NEW_PROC_API
-  ret = &pi->prstatus.pr_lwp.pr_lwppend;
-#else
-  ret = &pi->prstatus.pr_sigpend;
-#endif
-  if (save && ret)
-    memcpy (save, ret, sizeof (gdb_sigset_t));
-
-  return ret;
-}
-
-/*
- * Function: proc_get_signal_actions
- *
- * returns the set of signal actions.
- * Will also copy the sigactionset if 'save' is non-zero.
- */
-
-gdb_sigaction_t *
-proc_get_signal_actions (procinfo *pi, gdb_sigaction_t *save)
-{
-  gdb_sigaction_t *ret = NULL;
-
-  /*
-   * We should never have to apply this operation to any procinfo
-   * except the one for the main process.  If that ever changes
-   * for any reason, then take out the following clause and 
-   * replace it with one that makes sure the ctl_fd is open.
-   */
-  
-  if (pi->tid != 0)
-    pi = find_procinfo_or_die (pi->pid, 0);
-
-  if (!pi->status_valid)
-    if (!proc_get_status (pi))
-      return NULL;
-
-#ifdef NEW_PROC_API
-  ret = &pi->prstatus.pr_lwp.pr_action;
-#else
-  ret = &pi->prstatus.pr_action;
-#endif
-  if (save && ret)
-    memcpy (save, ret, sizeof (gdb_sigaction_t));
-
-  return ret;
-}
-
-/*
- * Function: proc_get_held_signals
- *
- * returns the set of signals that are held / blocked.
- * Will also copy the sigset if 'save' is non-zero.
- */
-
-gdb_sigset_t *
-proc_get_held_signals (procinfo *pi, gdb_sigset_t *save)
-{
-  gdb_sigset_t *ret = NULL;
-
-  /*
-   * We should never have to apply this operation to any procinfo
-   * except the one for the main process.  If that ever changes
-   * for any reason, then take out the following clause and 
-   * replace it with one that makes sure the ctl_fd is open.
-   */
-  
-  if (pi->tid != 0)
-    pi = find_procinfo_or_die (pi->pid, 0);
-
-#ifdef NEW_PROC_API
-  if (!pi->status_valid)
-    if (!proc_get_status (pi))
-      return NULL;
-
-#ifdef UNIXWARE
-  ret = &pi->prstatus.pr_lwp.pr_context.uc_sigmask;
-#else
-  ret = &pi->prstatus.pr_lwp.pr_lwphold;
-#endif /* UNIXWARE */
-#else  /* not NEW_PROC_API */
-  {
-    static gdb_sigset_t sigheld;
-
-    if (ioctl (pi->ctl_fd, PIOCGHOLD, &sigheld) >= 0)
-      ret = &sigheld;
-  }
-#endif /* NEW_PROC_API */
-  if (save && ret)
-    memcpy (save, ret, sizeof (gdb_sigset_t));
-
-  return ret;
-}
-
-/*
- * Function: proc_get_traced_signals
- *
- * returns the set of signals that are traced / debugged.
- * Will also copy the sigset if 'save' is non-zero.
- */
-
-gdb_sigset_t *
-proc_get_traced_signals (procinfo *pi, gdb_sigset_t *save)
-{
-  gdb_sigset_t *ret = NULL;
-
-  /*
-   * We should never have to apply this operation to any procinfo
-   * except the one for the main process.  If that ever changes
-   * for any reason, then take out the following clause and 
-   * replace it with one that makes sure the ctl_fd is open.
-   */
-  
-  if (pi->tid != 0)
-    pi = find_procinfo_or_die (pi->pid, 0);
-
-#ifdef NEW_PROC_API
-  if (!pi->status_valid)
-    if (!proc_get_status (pi))
-      return NULL;
-
-  ret = &pi->prstatus.pr_sigtrace;
-#else
-  {
-    static gdb_sigset_t sigtrace;
-
-    if (ioctl (pi->ctl_fd, PIOCGTRACE, &sigtrace) >= 0)
-      ret = &sigtrace;
-  }
-#endif
-  if (save && ret)
-    memcpy (save, ret, sizeof (gdb_sigset_t));
-
-  return ret;
-}
-
-/*
- * Function: proc_trace_signal
- *
- * Add 'signo' to the set of signals that are traced.
- * Returns non-zero for success, zero for failure.
- */
-
-int
-proc_trace_signal (procinfo *pi, int signo)
-{
-  gdb_sigset_t temp;
-
-  /*
-   * We should never have to apply this operation to any procinfo
-   * except the one for the main process.  If that ever changes
-   * for any reason, then take out the following clause and 
-   * replace it with one that makes sure the ctl_fd is open.
-   */
-  
-  if (pi->tid != 0)
-    pi = find_procinfo_or_die (pi->pid, 0);
-
-  if (pi)
-    {
-      if (proc_get_traced_signals (pi, &temp))
-	{
-	  praddset (&temp, signo);
-	  return proc_set_traced_signals (pi, &temp);
-	}
-    }
-
-  return 0;	/* failure */
-}
-
-/*
- * Function: proc_ignore_signal
- *
- * Remove 'signo' from the set of signals that are traced.
- * Returns non-zero for success, zero for failure.
- */
-
-int
-proc_ignore_signal (procinfo *pi, int signo)
-{
-  gdb_sigset_t temp;
-
-  /*
-   * We should never have to apply this operation to any procinfo
-   * except the one for the main process.  If that ever changes
-   * for any reason, then take out the following clause and 
-   * replace it with one that makes sure the ctl_fd is open.
-   */
-  
-  if (pi->tid != 0)
-    pi = find_procinfo_or_die (pi->pid, 0);
-
-  if (pi)
-    {
-      if (proc_get_traced_signals (pi, &temp))
-	{
-	  prdelset (&temp, signo);
-	  return proc_set_traced_signals (pi, &temp);
-	}
-    }
-
-  return 0;	/* failure */
-}
-
-/*
- * Function: proc_get_traced_faults
- *
- * returns the set of hardware faults that are traced /debugged.
- * Will also copy the faultset if 'save' is non-zero.
- */
-
-fltset_t *
-proc_get_traced_faults (procinfo *pi, fltset_t *save)
-{
-  fltset_t *ret = NULL;
-
-  /*
-   * We should never have to apply this operation to any procinfo
-   * except the one for the main process.  If that ever changes
-   * for any reason, then take out the following clause and 
-   * replace it with one that makes sure the ctl_fd is open.
-   */
-  
-  if (pi->tid != 0)
-    pi = find_procinfo_or_die (pi->pid, 0);
-
-#ifdef NEW_PROC_API
-  if (!pi->status_valid)
-    if (!proc_get_status (pi))
-      return NULL;
-
-  ret = &pi->prstatus.pr_flttrace;
-#else
-  {
-    static fltset_t flttrace;
-
-    if (ioctl (pi->ctl_fd, PIOCGFAULT, &flttrace) >= 0)
-      ret = &flttrace;
-  }
-#endif
-  if (save && ret)
-    memcpy (save, ret, sizeof (fltset_t));
-
-  return ret;
-}
-
-/*
- * Function: proc_get_traced_sysentry
- *
- * returns the set of syscalls that are traced /debugged on entry.
- * Will also copy the syscall set if 'save' is non-zero.
- */
-
-sysset_t *
-proc_get_traced_sysentry (procinfo *pi, sysset_t *save)
-{
-  sysset_t *ret = NULL;
-
-  /*
-   * We should never have to apply this operation to any procinfo
-   * except the one for the main process.  If that ever changes
-   * for any reason, then take out the following clause and 
-   * replace it with one that makes sure the ctl_fd is open.
-   */
-  
-  if (pi->tid != 0)
-    pi = find_procinfo_or_die (pi->pid, 0);
-
-#ifdef NEW_PROC_API
-  if (!pi->status_valid)
-    if (!proc_get_status (pi))
-      return NULL;
-
-#ifndef DYNAMIC_SYSCALLS
-  ret = &pi->prstatus.pr_sysentry;
-#else /* DYNAMIC_SYSCALLS */
-  {
-    static sysset_t *sysentry;
-    size_t size;
-
-    if (!sysentry)
-      sysentry = sysset_t_alloc (pi);
-    ret = sysentry;
-    if (pi->status_fd == 0 && open_procinfo_files (pi, FD_STATUS) == 0)
-      return NULL;
-    if (pi->prstatus.pr_sysentry_offset == 0)
-      {
-	gdb_premptysysset (sysentry);
-      }
-    else
-      {
-	int rsize;
-
-	if (lseek (pi->status_fd, (off_t) pi->prstatus.pr_sysentry_offset,
-	           SEEK_SET)
-	    != (off_t) pi->prstatus.pr_sysentry_offset)
-	  return NULL;
-	size = sysset_t_size (pi);
-	gdb_premptysysset (sysentry);
-	rsize = read (pi->status_fd, sysentry, size);
-	if (rsize < 0)
-	  return NULL;
-      }
-  }
-#endif /* DYNAMIC_SYSCALLS */
-#else /* !NEW_PROC_API */
-  {
-    static sysset_t sysentry;
-
-    if (ioctl (pi->ctl_fd, PIOCGENTRY, &sysentry) >= 0)
-      ret = &sysentry;
-  }
-#endif /* NEW_PROC_API */
-  if (save && ret)
-    memcpy (save, ret, sysset_t_size (pi));
-
-  return ret;
-}
-
-/*
- * Function: proc_get_traced_sysexit
- *
- * returns the set of syscalls that are traced /debugged on exit.
- * Will also copy the syscall set if 'save' is non-zero.
- */
-
-sysset_t *
-proc_get_traced_sysexit (procinfo *pi, sysset_t *save)
-{
-  sysset_t * ret = NULL;
-
-  /*
-   * We should never have to apply this operation to any procinfo
-   * except the one for the main process.  If that ever changes
-   * for any reason, then take out the following clause and 
-   * replace it with one that makes sure the ctl_fd is open.
-   */
-  
-  if (pi->tid != 0)
-    pi = find_procinfo_or_die (pi->pid, 0);
-
-#ifdef NEW_PROC_API
-  if (!pi->status_valid)
-    if (!proc_get_status (pi))
-      return NULL;
-
-#ifndef DYNAMIC_SYSCALLS
-  ret = &pi->prstatus.pr_sysexit;
-#else /* DYNAMIC_SYSCALLS */
-  {
-    static sysset_t *sysexit;
-    size_t size;
-
-    if (!sysexit)
-      sysexit = sysset_t_alloc (pi);
-    ret = sysexit;
-    if (pi->status_fd == 0 && open_procinfo_files (pi, FD_STATUS) == 0)
-      return NULL;
-    if (pi->prstatus.pr_sysexit_offset == 0)
-      {
-	gdb_premptysysset (sysexit);
-      }
-    else
-      {
-	int rsize;
-
-	if (lseek (pi->status_fd, (off_t) pi->prstatus.pr_sysexit_offset, SEEK_SET)
-	    != (off_t) pi->prstatus.pr_sysexit_offset)
-	  return NULL;
-	size = sysset_t_size (pi);
-	gdb_premptysysset (sysexit);
-	rsize = read (pi->status_fd, sysexit, size);
-	if (rsize < 0)
-	  return NULL;
-      }
-  }
-#endif /* DYNAMIC_SYSCALLS */
-#else
-  {
-    static sysset_t sysexit;
-
-    if (ioctl (pi->ctl_fd, PIOCGEXIT, &sysexit) >= 0)
-      ret = &sysexit;
-  }
-#endif
-  if (save && ret)
-    memcpy (save, ret, sysset_t_size (pi));
-
-  return ret;
-}
-
-/*
- * Function: proc_clear_current_fault
- *
- * The current fault (if any) is cleared; the associated signal
- * will not be sent to the process or LWP when it resumes.
- * Returns non-zero for success,  zero for failure.
- */
-
-int
-proc_clear_current_fault (procinfo *pi)
-{
-  int win;
-
-  /*
-   * We should never have to apply this operation to any procinfo
-   * except the one for the main process.  If that ever changes
-   * for any reason, then take out the following clause and 
-   * replace it with one that makes sure the ctl_fd is open.
-   */
-  
-  if (pi->tid != 0)
-    pi = find_procinfo_or_die (pi->pid, 0);
-
-#ifdef NEW_PROC_API
-  {
-    procfs_ctl_t cmd = PCCFAULT;
-    win = (write (pi->ctl_fd, (void *) &cmd, sizeof (cmd)) == sizeof (cmd));
-  }
-#else
-  win = (ioctl (pi->ctl_fd, PIOCCFAULT, 0) >= 0);
-#endif
-
-  return win;
-}
-
-/*
- * Function: proc_set_current_signal
- *
- * Set the "current signal" that will be delivered next to the process.
- * NOTE: semantics are different from those of KILL.
- * This signal will be delivered to the process or LWP
- * immediately when it is resumed (even if the signal is held/blocked);
- * it will NOT immediately cause another event of interest, and will NOT
- * first trap back to the debugger.
- *
- * Returns non-zero for success,  zero for failure.
- */
-
-int
-proc_set_current_signal (procinfo *pi, int signo)
-{
-  int win;
-  struct {
-    procfs_ctl_t cmd;
-    /* Use char array to avoid alignment issues.  */
-    char sinfo[sizeof (gdb_siginfo_t)];
-  } arg;
-  gdb_siginfo_t *mysinfo;
-
-  /*
-   * We should never have to apply this operation to any procinfo
-   * except the one for the main process.  If that ever changes
-   * for any reason, then take out the following clause and 
-   * replace it with one that makes sure the ctl_fd is open.
-   */
-  
-  if (pi->tid != 0)
-    pi = find_procinfo_or_die (pi->pid, 0);
-
-#ifdef PROCFS_DONT_PIOCSSIG_CURSIG
-  /* With Alpha OSF/1 procfs, the kernel gets really confused if it
-   * receives a PIOCSSIG with a signal identical to the current signal,
-   * it messes up the current signal. Work around the kernel bug. 
-   */
-  if (signo > 0 &&
-      signo == proc_cursig (pi))
-    return 1;           /* I assume this is a success? */
-#endif
-
-  /* The pointer is just a type alias.  */
-  mysinfo = (gdb_siginfo_t *) &arg.sinfo;
-  mysinfo->si_signo = signo;
-  mysinfo->si_code  = 0;
-  mysinfo->si_pid   = getpid ();       /* ?why? */
-  mysinfo->si_uid   = getuid ();       /* ?why? */
-
-#ifdef NEW_PROC_API
-  arg.cmd = PCSSIG;
-  win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg))  == sizeof (arg));
-#else
-  win = (ioctl (pi->ctl_fd, PIOCSSIG, (void *) &arg.sinfo) >= 0);
-#endif
-
-  return win;
-}
-
-/*
- * Function: proc_clear_current_signal
- *
- * The current signal (if any) is cleared, and
- * is not sent to the process or LWP when it resumes.
- * Returns non-zero for success,  zero for failure.
- */
-
-int
-proc_clear_current_signal (procinfo *pi)
-{
-  int win;
-
-  /*
-   * We should never have to apply this operation to any procinfo
-   * except the one for the main process.  If that ever changes
-   * for any reason, then take out the following clause and 
-   * replace it with one that makes sure the ctl_fd is open.
-   */
-  
-  if (pi->tid != 0)
-    pi = find_procinfo_or_die (pi->pid, 0);
-
-#ifdef NEW_PROC_API
-  {
-    struct {
-      procfs_ctl_t cmd;
-      /* Use char array to avoid alignment issues.  */
-      char sinfo[sizeof (gdb_siginfo_t)];
-    } arg;
-    gdb_siginfo_t *mysinfo;
-
-    arg.cmd = PCSSIG;
-    /* The pointer is just a type alias.  */
-    mysinfo = (gdb_siginfo_t *) &arg.sinfo;
-    mysinfo->si_signo = 0;
-    mysinfo->si_code  = 0;
-    mysinfo->si_errno = 0;
-    mysinfo->si_pid   = getpid ();       /* ?why? */
-    mysinfo->si_uid   = getuid ();       /* ?why? */
-
-    win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg));
-  }
-#else
-  win = (ioctl (pi->ctl_fd, PIOCSSIG, 0) >= 0);
-#endif
-
-  return win;
-}
-
-/*
- * Function: proc_get_gregs
- *
- * Get the general registers for the process or LWP.
- * Returns non-zero for success, zero for failure.
- */
-
-gdb_gregset_t *
-proc_get_gregs (procinfo *pi)
-{
-  if (!pi->status_valid || !pi->gregs_valid)
-    if (!proc_get_status (pi))
-      return NULL;
-
-  /*
-   * OK, sorry about the ifdef's.
-   * There's three cases instead of two, because 
-   * in this instance Unixware and Solaris/RW differ.
-   */
-
-#ifdef NEW_PROC_API
-#ifdef UNIXWARE		/* ugh, a true architecture dependency */
-  return &pi->prstatus.pr_lwp.pr_context.uc_mcontext.gregs;
-#else	/* not Unixware */
-  return &pi->prstatus.pr_lwp.pr_reg;
-#endif	/* Unixware */
-#else	/* not NEW_PROC_API */
-  return &pi->prstatus.pr_reg;
-#endif	/* NEW_PROC_API */
-}
-
-/*
- * Function: proc_get_fpregs
- *
- * Get the floating point registers for the process or LWP.
- * Returns non-zero for success, zero for failure.
- */
-
-gdb_fpregset_t *
-proc_get_fpregs (procinfo *pi)
-{
-#ifdef NEW_PROC_API
-  if (!pi->status_valid || !pi->fpregs_valid)
-    if (!proc_get_status (pi))
-      return NULL;
-
-#ifdef UNIXWARE		/* a true architecture dependency */
-  return &pi->prstatus.pr_lwp.pr_context.uc_mcontext.fpregs;
-#else
-  return &pi->prstatus.pr_lwp.pr_fpreg;
-#endif	/* Unixware */
-
-#else	/* not NEW_PROC_API */
-  if (pi->fpregs_valid)
-    return &pi->fpregset;	/* already got 'em */
-  else
-    {
-      if (pi->ctl_fd == 0 &&
-	  open_procinfo_files (pi, FD_CTL) == 0)
-	{
-	  return NULL;
-	}
-      else
-	{
-#ifdef PIOCTGFPREG
-	  struct {
-	    long pr_count;
-	    tid_t pr_error_thread;
-	    tfpregset_t thread_1;
-	  } thread_fpregs;
-
-	  thread_fpregs.pr_count = 1;
-	  thread_fpregs.thread_1.tid = pi->tid;
-
-	  if (pi->tid == 0 &&
-	      ioctl (pi->ctl_fd, PIOCGFPREG, &pi->fpregset) >= 0)
-	    {
-	      pi->fpregs_valid = 1;
-	      return &pi->fpregset;	/* got 'em now! */
-	    }
-	  else if (pi->tid != 0 &&
-		   ioctl (pi->ctl_fd, PIOCTGFPREG, &thread_fpregs) >= 0)
-	    {
-	      memcpy (&pi->fpregset, &thread_fpregs.thread_1.pr_fpregs,
-		      sizeof (pi->fpregset));
-	      pi->fpregs_valid = 1;
-	      return &pi->fpregset;	/* got 'em now! */
-	    }
-	  else
-	    {
-	      return NULL;
-	    }
-#else
-	  if (ioctl (pi->ctl_fd, PIOCGFPREG, &pi->fpregset) >= 0)
-	    {
-	      pi->fpregs_valid = 1;
-	      return &pi->fpregset;	/* got 'em now! */
-	    }
-	  else
-	    {
-	      return NULL;
-	    }
-#endif
-	}
-    }
-#endif
-}
-
-/*
- * Function: proc_set_gregs
- *
- * Write the general registers back to the process or LWP.
- * Returns non-zero for success, zero for failure.
- */
-
-int
-proc_set_gregs (procinfo *pi)
-{
-  gdb_gregset_t *gregs;
-  int win;
-
-  if ((gregs = proc_get_gregs (pi)) == NULL)
-    return 0;	/* get_regs has already warned */
-
-  if (pi->ctl_fd == 0 &&
-      open_procinfo_files (pi, FD_CTL) == 0)
-    {
-      return 0;
-    }
-  else
-    {
-#ifdef NEW_PROC_API
-      struct {
-	procfs_ctl_t cmd;
-	/* Use char array to avoid alignment issues.  */
-	char gregs[sizeof (gdb_gregset_t)];
-      } arg;
-
-      arg.cmd   = PCSREG;
-      memcpy (&arg.gregs, gregs, sizeof (arg.gregs));
-      win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg));
-#else
-      win = (ioctl (pi->ctl_fd, PIOCSREG, gregs) >= 0);
-#endif
-    }
-
-  /* Policy: writing the regs invalidates our cache. */
-  pi->gregs_valid = 0;
-  return win;
-}
-
-/*
- * Function: proc_set_fpregs
- *
- * Modify the floating point register set of the process or LWP.
- * Returns non-zero for success, zero for failure.
- */
-
-int
-proc_set_fpregs (procinfo *pi)
-{
-  gdb_fpregset_t *fpregs;
-  int win;
-
-  if ((fpregs = proc_get_fpregs (pi)) == NULL)
-    return 0;		/* get_fpregs has already warned */
-
-  if (pi->ctl_fd == 0 &&
-      open_procinfo_files (pi, FD_CTL) == 0)
-    {
-      return 0;
-    }
-  else
-    {
-#ifdef NEW_PROC_API
-      struct {
-	procfs_ctl_t cmd;
-	/* Use char array to avoid alignment issues.  */
-	char fpregs[sizeof (gdb_fpregset_t)];
-      } arg;
-
-      arg.cmd   = PCSFPREG;
-      memcpy (&arg.fpregs, fpregs, sizeof (arg.fpregs));
-      win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg));
-#else
-#ifdef PIOCTSFPREG
-      if (pi->tid == 0)
-	win = (ioctl (pi->ctl_fd, PIOCSFPREG, fpregs) >= 0);
-      else
-	{
-	  struct {
-	    long pr_count;
-	    tid_t pr_error_thread;
-	    tfpregset_t thread_1;
-	  } thread_fpregs;
-
-	  thread_fpregs.pr_count = 1;
-	  thread_fpregs.thread_1.tid = pi->tid;
-	  memcpy (&thread_fpregs.thread_1.pr_fpregs, fpregs,
-		  sizeof (*fpregs));
-	  win = (ioctl (pi->ctl_fd, PIOCTSFPREG, &thread_fpregs) >= 0);
-	}
-#else
-      win = (ioctl (pi->ctl_fd, PIOCSFPREG, fpregs) >= 0);
-#endif	/* osf PIOCTSFPREG */
-#endif	/* NEW_PROC_API */
-    }
-
-  /* Policy: writing the regs invalidates our cache. */
-  pi->fpregs_valid = 0;
-  return win;
-}
-
-/*
- * Function: proc_kill
- *
- * Send a signal to the proc or lwp with the semantics of "kill()".
- * Returns non-zero for success,  zero for failure.
- */
-
-int
-proc_kill (procinfo *pi, int signo)
-{
-  int win;
-
-  /*
-   * We might conceivably apply this operation to an LWP, and
-   * the LWP's ctl file descriptor might not be open.
-   */
-
-  if (pi->ctl_fd == 0 &&
-      open_procinfo_files (pi, FD_CTL) == 0)
-    {
-      return 0;
-    }
-  else
-    {
-#ifdef NEW_PROC_API
-      procfs_ctl_t cmd[2];
-
-      cmd[0] = PCKILL;
-      cmd[1] = signo;
-      win = (write (pi->ctl_fd, (char *) &cmd, sizeof (cmd)) == sizeof (cmd));
-#else   /* ioctl method */
-      /* FIXME: do I need the Alpha OSF fixups present in
-	 procfs.c/unconditionally_kill_inferior?  Perhaps only for SIGKILL? */
-      win = (ioctl (pi->ctl_fd, PIOCKILL, &signo) >= 0);
-#endif
-  }
-
-  return win;
-}
-
-/*
- * Function: proc_parent_pid
- *
- * Find the pid of the process that started this one.
- * Returns the parent process pid, or zero.
- */
-
-int
-proc_parent_pid (procinfo *pi)
-{
-  /*
-   * We should never have to apply this operation to any procinfo
-   * except the one for the main process.  If that ever changes
-   * for any reason, then take out the following clause and 
-   * replace it with one that makes sure the ctl_fd is open.
-   */
-  
-  if (pi->tid != 0)
-    pi = find_procinfo_or_die (pi->pid, 0);
-
-  if (!pi->status_valid)
-    if (!proc_get_status (pi))
-      return 0;
-
-  return pi->prstatus.pr_ppid;
-}
-
-
-/*
- * Function: proc_set_watchpoint
- *
- */
-
-int
-proc_set_watchpoint (procinfo *pi, CORE_ADDR addr, int len, int wflags)
-{
-#if !defined (TARGET_HAS_HARDWARE_WATCHPOINTS)  
-  return 0;
-#else
-/* Horrible hack!  Detect Solaris 2.5, because this doesn't work on 2.5 */
-#if defined (PIOCOPENLWP) || defined (UNIXWARE)	/* Solaris 2.5: bail out */
-  return 0;
-#else
-  struct {
-    procfs_ctl_t cmd;
-    char watch[sizeof (prwatch_t)];
-  } arg;
-  prwatch_t *pwatch;
-
-  pwatch            = (prwatch_t *) &arg.watch;
-#ifdef PCAGENT	/* Horrible hack: only defined on Solaris 2.6+ */
-  pwatch->pr_vaddr  = (uintptr_t) address_to_host_pointer (addr);
-#else
-  pwatch->pr_vaddr  = (caddr_t) address_to_host_pointer (addr);
-#endif
-  pwatch->pr_size   = len;
-  pwatch->pr_wflags = wflags;
-#if defined(NEW_PROC_API) && defined (PCWATCH)
-  arg.cmd = PCWATCH;
-  return (write (pi->ctl_fd, &arg, sizeof (arg)) == sizeof (arg));
-#else
-#if defined (PIOCSWATCH)
-  return (ioctl (pi->ctl_fd, PIOCSWATCH, pwatch) >= 0);
-#else
-  return 0;	/* Fail */
-#endif
-#endif
-#endif
-#endif
-}
-
-#ifdef TM_I386SOL2_H		/* Is it hokey to use this? */
-
-#include <sys/sysi86.h>
-
-/*
- * Function: proc_get_LDT_entry
- *
- * Inputs:
- *   procinfo *pi;
- *   int key;
- *
- * The 'key' is actually the value of the lower 16 bits of
- * the GS register for the LWP that we're interested in.
- *
- * Return: matching ssh struct (LDT entry).
- */
-
-struct ssd *
-proc_get_LDT_entry (procinfo *pi, int key)
-{
-  static struct ssd *ldt_entry = NULL;
-#ifdef NEW_PROC_API
-  char pathname[MAX_PROC_NAME_SIZE];
-  struct cleanup *old_chain = NULL;
-  int  fd;
-
-  /* Allocate space for one LDT entry.
-     This alloc must persist, because we return a pointer to it.  */
-  if (ldt_entry == NULL)
-    ldt_entry = (struct ssd *) xmalloc (sizeof (struct ssd));
-
-  /* Open the file descriptor for the LDT table.  */
-  sprintf (pathname, "/proc/%d/ldt", pi->pid);
-  if ((fd = open_with_retry (pathname, O_RDONLY)) < 0)
-    {
-      proc_warn (pi, "proc_get_LDT_entry (open)", __LINE__);
-      return NULL;
-    }
-  /* Make sure it gets closed again! */
-  old_chain = make_cleanup_close (fd);
-
-  /* Now 'read' thru the table, find a match and return it.  */
-  while (read (fd, ldt_entry, sizeof (struct ssd)) == sizeof (struct ssd))
-    {
-      if (ldt_entry->sel == 0 &&
-	  ldt_entry->bo  == 0 &&
-	  ldt_entry->acc1 == 0 &&
-	  ldt_entry->acc2 == 0)
-	break;	/* end of table */
-      /* If key matches, return this entry. */
-      if (ldt_entry->sel == key)
-	return ldt_entry;
-    }
-  /* Loop ended, match not found. */
-  return NULL;
-#else
-  int nldt, i;
-  static int nalloc = 0;
-
-  /* Get the number of LDT entries.  */
-  if (ioctl (pi->ctl_fd, PIOCNLDT, &nldt) < 0)
-    {
-      proc_warn (pi, "proc_get_LDT_entry (PIOCNLDT)", __LINE__);
-      return NULL;
-    }
-
-  /* Allocate space for the number of LDT entries. */
-  /* This alloc has to persist, 'cause we return a pointer to it. */
-  if (nldt > nalloc)
-    {
-      ldt_entry = (struct ssd *) 
-	xrealloc (ldt_entry, (nldt + 1) * sizeof (struct ssd));
-      nalloc = nldt;
-    }
-  
-  /* Read the whole table in one gulp.  */
-  if (ioctl (pi->ctl_fd, PIOCLDT, ldt_entry) < 0)
-    {
-      proc_warn (pi, "proc_get_LDT_entry (PIOCLDT)", __LINE__);
-      return NULL;
-    }
-
-  /* Search the table and return the (first) entry matching 'key'. */
-  for (i = 0; i < nldt; i++)
-    if (ldt_entry[i].sel == key)
-      return &ldt_entry[i];
-
-  /* Loop ended, match not found. */
-  return NULL;
-#endif
-}
-
-#endif /* TM_I386SOL2_H */
-
-/* =============== END, non-thread part of /proc  "MODULE" =============== */
-
-/* =================== Thread "MODULE" =================== */
-
-/* NOTE: you'll see more ifdefs and duplication of functions here,
-   since there is a different way to do threads on every OS.  */
-
-/*
- * Function: proc_get_nthreads 
- *
- * Return the number of threads for the process 
- */
-
-#if defined (PIOCNTHR) && defined (PIOCTLIST)
-/*
- * OSF version
- */
-int 
-proc_get_nthreads (procinfo *pi)
-{
-  int nthreads = 0;
-
-  if (ioctl (pi->ctl_fd, PIOCNTHR, &nthreads) < 0)
-    proc_warn (pi, "procfs: PIOCNTHR failed", __LINE__);
-
-  return nthreads;
-}
-
-#else
-#if defined (SYS_lwpcreate) || defined (SYS_lwp_create) /* FIXME: multiple */
-/*
- * Solaris and Unixware version
- */
-int
-proc_get_nthreads (procinfo *pi)
-{
-  if (!pi->status_valid)
-    if (!proc_get_status (pi))
-      return 0;
-
-  /*
-   * NEW_PROC_API: only works for the process procinfo, 
-   * because the LWP procinfos do not get prstatus filled in.
-   */
-#ifdef NEW_PROC_API  
-  if (pi->tid != 0)	/* find the parent process procinfo */
-    pi = find_procinfo_or_die (pi->pid, 0);
-#endif
-  return pi->prstatus.pr_nlwp;
-}
-
-#else
-/*
- * Default version
- */
-int
-proc_get_nthreads (procinfo *pi)
-{
-  return 0;
-}
-#endif
-#endif
-
-/*
- * Function: proc_get_current_thread (LWP version)
- *
- * Return the ID of the thread that had an event of interest.
- * (ie. the one that hit a breakpoint or other traced event).
- * All other things being equal, this should be the ID of a
- * thread that is currently executing.
- */
-
-#if defined (SYS_lwpcreate) || defined (SYS_lwp_create) /* FIXME: multiple */
-/*
- * Solaris and Unixware version
- */
-int
-proc_get_current_thread (procinfo *pi)
-{
-  /*
-   * Note: this should be applied to the root procinfo for the process,
-   * not to the procinfo for an LWP.  If applied to the procinfo for
-   * an LWP, it will simply return that LWP's ID.  In that case, 
-   * find the parent process procinfo.
-   */
-  
-  if (pi->tid != 0)
-    pi = find_procinfo_or_die (pi->pid, 0);
-
-  if (!pi->status_valid)
-    if (!proc_get_status (pi))
-      return 0;
-
-#ifdef NEW_PROC_API
-  return pi->prstatus.pr_lwp.pr_lwpid;
-#else
-  return pi->prstatus.pr_who;
-#endif
-}
-
-#else
-#if defined (PIOCNTHR) && defined (PIOCTLIST)
-/*
- * OSF version
- */
-int 
-proc_get_current_thread (procinfo *pi)
-{
-#if 0	/* FIXME: not ready for prime time? */
-  return pi->prstatus.pr_tid;
-#else
-  return 0;
-#endif
-}
-
-#else
-/*
- * Default version
- */
-int 
-proc_get_current_thread (procinfo *pi)
-{
-  return 0;
-}
-
-#endif
-#endif
-
-/*
- * Function: proc_update_threads 
- *
- * Discover the IDs of all the threads within the process, and
- * create a procinfo for each of them (chained to the parent).
- *
- * This unfortunately requires a different method on every OS.
- *
- * Return: non-zero for success, zero for failure.
- */
-
-int
-proc_delete_dead_threads (procinfo *parent, procinfo *thread, void *ignore)
-{
-  if (thread && parent)	/* sanity */
-    {
-      thread->status_valid = 0;
-      if (!proc_get_status (thread))
-	destroy_one_procinfo (&parent->thread_list, thread);
-    }
-  return 0;	/* keep iterating */
-}
-
-#if defined (PIOCLSTATUS)
-/*
- * Solaris 2.5 (ioctl) version
- */
-int
-proc_update_threads (procinfo *pi)
-{
-  gdb_prstatus_t *prstatus;
-  struct cleanup *old_chain = NULL;
-  procinfo *thread;
-  int nlwp, i;
-
-  /*
-   * We should never have to apply this operation to any procinfo
-   * except the one for the main process.  If that ever changes
-   * for any reason, then take out the following clause and 
-   * replace it with one that makes sure the ctl_fd is open.
-   */
-  
-  if (pi->tid != 0)
-    pi = find_procinfo_or_die (pi->pid, 0);
-
-  proc_iterate_over_threads (pi, proc_delete_dead_threads, NULL);
-
-  if ((nlwp = proc_get_nthreads (pi)) <= 1)
-    return 1;	/* Process is not multi-threaded; nothing to do.  */
-
-  prstatus = xmalloc (sizeof (gdb_prstatus_t) * (nlwp + 1));
-
-  old_chain = make_cleanup (xfree, prstatus);
-  if (ioctl (pi->ctl_fd, PIOCLSTATUS, prstatus) < 0)
-    proc_error (pi, "update_threads (PIOCLSTATUS)", __LINE__);
-
-  /* Skip element zero, which represents the process as a whole. */
-  for (i = 1; i < nlwp + 1; i++)
-    {
-      if ((thread = create_procinfo (pi->pid, prstatus[i].pr_who)) == NULL)
-	proc_error (pi, "update_threads, create_procinfo", __LINE__);
-
-      memcpy (&thread->prstatus, &prstatus[i], sizeof (*prstatus));
-      thread->status_valid = 1;
-    }
-  pi->threads_valid = 1;
-  do_cleanups (old_chain);
-  return 1;
-}
-#else
-#ifdef NEW_PROC_API
-/*
- * Unixware and Solaris 6 (and later) version
- */
-static void
-do_closedir_cleanup (void *dir)
-{
-  closedir (dir);
-}
-
-int
-proc_update_threads (procinfo *pi)
-{
-  char pathname[MAX_PROC_NAME_SIZE + 16];
-  struct dirent *direntry;
-  struct cleanup *old_chain = NULL;
-  procinfo *thread;
-  DIR *dirp;
-  int lwpid;
-
-  /*
-   * We should never have to apply this operation to any procinfo
-   * except the one for the main process.  If that ever changes
-   * for any reason, then take out the following clause and 
-   * replace it with one that makes sure the ctl_fd is open.
-   */
-  
-  if (pi->tid != 0)
-    pi = find_procinfo_or_die (pi->pid, 0);
-
-  proc_iterate_over_threads (pi, proc_delete_dead_threads, NULL);
-
-  /*
-   * Unixware
-   *
-   * Note: this brute-force method is the only way I know of 
-   * to accomplish this task on Unixware.  This method will 
-   * also work on Solaris 2.6 and 2.7.  There is a much simpler
-   * and more elegant way to do this on Solaris, but the margins
-   * of this manuscript are too small to write it here...  ;-)
-   */
-
-  strcpy (pathname, pi->pathname);
-  strcat (pathname, "/lwp");
-  if ((dirp = opendir (pathname)) == NULL)
-    proc_error (pi, "update_threads, opendir", __LINE__);
-
-  old_chain = make_cleanup (do_closedir_cleanup, dirp);
-  while ((direntry = readdir (dirp)) != NULL)
-    if (direntry->d_name[0] != '.')		/* skip '.' and '..' */
-      {
-	lwpid = atoi (&direntry->d_name[0]);
-	if ((thread = create_procinfo (pi->pid, lwpid)) == NULL)
-	  proc_error (pi, "update_threads, create_procinfo", __LINE__);
-      }
-  pi->threads_valid = 1;
-  do_cleanups (old_chain);
-  return 1;
-}
-#else
-#ifdef PIOCTLIST
-/*
- * OSF version
- */
-int 
-proc_update_threads (procinfo *pi)
-{
-  int nthreads, i;
-  tid_t *threads;
-
-  /*
-   * We should never have to apply this operation to any procinfo
-   * except the one for the main process.  If that ever changes
-   * for any reason, then take out the following clause and 
-   * replace it with one that makes sure the ctl_fd is open.
-   */
-  
-  if (pi->tid != 0)
-    pi = find_procinfo_or_die (pi->pid, 0);
-
-  proc_iterate_over_threads (pi, proc_delete_dead_threads, NULL);
-
-  nthreads = proc_get_nthreads (pi);
-  if (nthreads < 2)
-    return 0;		/* nothing to do for 1 or fewer threads */
-
-  threads = xmalloc (nthreads * sizeof (tid_t));
-  
-  if (ioctl (pi->ctl_fd, PIOCTLIST, threads) < 0)
-    proc_error (pi, "procfs: update_threads (PIOCTLIST)", __LINE__);
-
-  for (i = 0; i < nthreads; i++)
-    {
-      if (!find_procinfo (pi->pid, threads[i]))
-	if (!create_procinfo  (pi->pid, threads[i]))
-	  proc_error (pi, "update_threads, create_procinfo", __LINE__);
-    }
-  pi->threads_valid = 1;
-  return 1;
-}
-#else
-/*
- * Default version
- */
-int
-proc_update_threads (procinfo *pi)
-{
-  return 0;
-}
-#endif	/* OSF PIOCTLIST */
-#endif  /* NEW_PROC_API   */
-#endif  /* SOL 2.5 PIOCLSTATUS */
-
-/*
- * Function: proc_iterate_over_threads
- *
- * Description:
- *   Given a pointer to a function, call that function once
- *   for each lwp in the procinfo list, until the function
- *   returns non-zero, in which event return the value
- *   returned by the function.
- *
- * Note: this function does NOT call update_threads.
- * If you want to discover new threads first, you must
- * call that function explicitly.  This function just makes
- * a quick pass over the currently-known procinfos. 
- * 
- * Arguments:
- *   pi		- parent process procinfo
- *   func	- per-thread function
- *   ptr	- opaque parameter for function.
- *
- * Return:
- *   First non-zero return value from the callee, or zero.
- */
-
-int
-proc_iterate_over_threads (procinfo *pi,
-			   int (*func) (procinfo *, procinfo *, void *),
-			   void *ptr)
-{
-  procinfo *thread, *next;
-  int retval = 0;
-
-  /*
-   * We should never have to apply this operation to any procinfo
-   * except the one for the main process.  If that ever changes
-   * for any reason, then take out the following clause and 
-   * replace it with one that makes sure the ctl_fd is open.
-   */
-  
-  if (pi->tid != 0)
-    pi = find_procinfo_or_die (pi->pid, 0);
-
-  for (thread = pi->thread_list; thread != NULL; thread = next)
-    {
-      next = thread->next;	/* in case thread is destroyed */
-      if ((retval = (*func) (pi, thread, ptr)) != 0)
-	break;
-    }
-
-  return retval;
-}
-
-/* =================== END, Thread "MODULE" =================== */
-
-/* =================== END, /proc  "MODULE" =================== */
-
-/* ===================  GDB  "MODULE" =================== */
-
-/*
- * Here are all of the gdb target vector functions and their friends.
- */
-
-static ptid_t do_attach (ptid_t ptid);
-static void do_detach (int signo);
-static int register_gdb_signals (procinfo *, gdb_sigset_t *);
-
-/*
- * Function: procfs_debug_inferior
- *
- * Sets up the inferior to be debugged.
- * Registers to trace signals, hardware faults, and syscalls.
- * Note: does not set RLC flag: caller may want to customize that.
- *
- * Returns: zero for success (note! unlike most functions in this module)
- *   On failure, returns the LINE NUMBER where it failed!
- */
-
-static int
-procfs_debug_inferior (procinfo *pi)
-{
-  fltset_t traced_faults;
-  gdb_sigset_t traced_signals;
-  sysset_t *traced_syscall_entries;
-  sysset_t *traced_syscall_exits;
-  int status;
-
-#ifdef PROCFS_DONT_TRACE_FAULTS
-  /* On some systems (OSF), we don't trace hardware faults.
-     Apparently it's enough that we catch them as signals.
-     Wonder why we don't just do that in general? */
-  premptyset (&traced_faults);		/* don't trace faults. */
-#else
-  /* Register to trace hardware faults in the child. */
-  prfillset (&traced_faults);		/* trace all faults... */
-  prdelset  (&traced_faults, FLTPAGE);	/* except page fault.  */
-#endif
-  if (!proc_set_traced_faults  (pi, &traced_faults))
-    return __LINE__;
-
-  /* Register to trace selected signals in the child. */
-  premptyset (&traced_signals);
-  if (!register_gdb_signals (pi, &traced_signals))
-    return __LINE__;
-
-
-  /* Register to trace the 'exit' system call (on entry).  */
-  traced_syscall_entries = sysset_t_alloc (pi);
-  gdb_premptysysset (traced_syscall_entries);
-#ifdef SYS_exit
-  gdb_praddsysset (traced_syscall_entries, SYS_exit);
-#endif
-#ifdef SYS_lwpexit
-  gdb_praddsysset (traced_syscall_entries, SYS_lwpexit);	/* And _lwp_exit... */
-#endif
-#ifdef SYS_lwp_exit
-  gdb_praddsysset (traced_syscall_entries, SYS_lwp_exit);
-#endif
-#ifdef DYNAMIC_SYSCALLS
-  {
-    int callnum = find_syscall (pi, "_exit");
-    if (callnum >= 0)
-      gdb_praddsysset (traced_syscall_entries, callnum);
-  }
-#endif
-
-  status = proc_set_traced_sysentry (pi, traced_syscall_entries);
-  xfree (traced_syscall_entries);
-  if (!status)
-    return __LINE__;
-
-#ifdef PRFS_STOPEXEC	/* defined on OSF */
-  /* OSF method for tracing exec syscalls.  Quoting:
-     Under Alpha OSF/1 we have to use a PIOCSSPCACT ioctl to trace
-     exits from exec system calls because of the user level loader.  */
-  /* FIXME: make nice and maybe move into an access function. */
-  {
-    int prfs_flags;
-
-    if (ioctl (pi->ctl_fd, PIOCGSPCACT, &prfs_flags) < 0)
-      return __LINE__;
-
-    prfs_flags |= PRFS_STOPEXEC;
-
-    if (ioctl (pi->ctl_fd, PIOCSSPCACT, &prfs_flags) < 0)
-      return __LINE__;
-  }
-#else /* not PRFS_STOPEXEC */
-  /* Everyone else's (except OSF) method for tracing exec syscalls */
-  /* GW: Rationale...
-     Not all systems with /proc have all the exec* syscalls with the same
-     names.  On the SGI, for example, there is no SYS_exec, but there
-     *is* a SYS_execv.  So, we try to account for that. */
-
-  traced_syscall_exits = sysset_t_alloc (pi);
-  gdb_premptysysset (traced_syscall_exits);
-#ifdef SYS_exec
-  gdb_praddsysset (traced_syscall_exits, SYS_exec);
-#endif
-#ifdef SYS_execve
-  gdb_praddsysset (traced_syscall_exits, SYS_execve);
-#endif
-#ifdef SYS_execv
-  gdb_praddsysset (traced_syscall_exits, SYS_execv);
-#endif
-
-#ifdef SYS_lwpcreate
-  gdb_praddsysset (traced_syscall_exits, SYS_lwpcreate);
-  gdb_praddsysset (traced_syscall_exits, SYS_lwpexit);
-#endif
-
-#ifdef SYS_lwp_create	/* FIXME: once only, please */
-  gdb_praddsysset (traced_syscall_exits, SYS_lwp_create);
-  gdb_praddsysset (traced_syscall_exits, SYS_lwp_exit);
-#endif
-
-#ifdef DYNAMIC_SYSCALLS
-  {
-    int callnum = find_syscall (pi, "execve");
-    if (callnum >= 0)
-      gdb_praddsysset (traced_syscall_exits, callnum);
-    callnum = find_syscall (pi, "ra_execve");
-    if (callnum >= 0)
-      gdb_praddsysset (traced_syscall_exits, callnum);
-  }
-#endif
-
-  status = proc_set_traced_sysexit (pi, traced_syscall_exits);
-  xfree (traced_syscall_exits);
-  if (!status)
-    return __LINE__;
-
-#endif /* PRFS_STOPEXEC */
-  return 0;
-}
-
-static void 
-procfs_attach (char *args, int from_tty)
-{
-  char *exec_file;
-  int   pid;
-
-  if (!args)
-    error_no_arg ("process-id to attach");
-
-  pid = atoi (args);
-  if (pid == getpid ())
-    error ("Attaching GDB to itself is not a good idea...");
-
-  if (from_tty)
-    {
-      exec_file = get_exec_file (0);
-
-      if (exec_file)
-	printf_filtered ("Attaching to program `%s', %s\n", 
-			 exec_file, target_pid_to_str (pid_to_ptid (pid)));
-      else
-	printf_filtered ("Attaching to %s\n",
-	                 target_pid_to_str (pid_to_ptid (pid)));
-
-      fflush (stdout);
-    }
-  inferior_ptid = do_attach (pid_to_ptid (pid));
-  push_target (&procfs_ops);
-}
-
-static void 
-procfs_detach (char *args, int from_tty)
-{
-  char *exec_file;
-  int   signo = 0;
-
-  if (from_tty)
-    {
-      exec_file = get_exec_file (0);
-      if (exec_file == 0)
-	exec_file = "";
-      printf_filtered ("Detaching from program: %s %s\n",
-	      exec_file, target_pid_to_str (inferior_ptid));
-      fflush (stdout);
-    }
-  if (args)
-    signo = atoi (args);
-  
-  do_detach (signo);
-  inferior_ptid = null_ptid;
-  unpush_target (&procfs_ops);		/* Pop out of handling an inferior */
-}
-
-static ptid_t
-do_attach (ptid_t ptid)
-{
-  procinfo *pi;
-  int fail;
-
-  if ((pi = create_procinfo (PIDGET (ptid), 0)) == NULL)
-    perror ("procfs: out of memory in 'attach'");
-
-  if (!open_procinfo_files (pi, FD_CTL))
-    {
-      fprintf_filtered (gdb_stderr, "procfs:%d -- ", __LINE__);
-      sprintf (errmsg, "do_attach: couldn't open /proc file for process %d", 
-	       PIDGET (ptid));
-      dead_procinfo (pi, errmsg, NOKILL);
-    }
-
-  /* Stop the process (if it isn't already stopped).  */
-  if (proc_flags (pi) & (PR_STOPPED | PR_ISTOP))
-    {
-      pi->was_stopped = 1;
-      proc_prettyprint_why (proc_why (pi), proc_what (pi), 1);
-    }
-  else
-    {
-      pi->was_stopped = 0;
-      /* Set the process to run again when we close it.  */
-      if (!proc_set_run_on_last_close (pi))
-	dead_procinfo (pi, "do_attach: couldn't set RLC.", NOKILL);
-
-      /* Now stop the process. */
-      if (!proc_stop_process (pi))
-	dead_procinfo (pi, "do_attach: couldn't stop the process.", NOKILL);
-      pi->ignore_next_sigstop = 1;
-    }
-  /* Save some of the /proc state to be restored if we detach.  */
-  if (!proc_get_traced_faults   (pi, &pi->saved_fltset))
-    dead_procinfo (pi, "do_attach: couldn't save traced faults.", NOKILL);
-  if (!proc_get_traced_signals  (pi, &pi->saved_sigset))
-    dead_procinfo (pi, "do_attach: couldn't save traced signals.", NOKILL);
-  if (!proc_get_traced_sysentry (pi, pi->saved_entryset))
-    dead_procinfo (pi, "do_attach: couldn't save traced syscall entries.",
-		   NOKILL);
-  if (!proc_get_traced_sysexit  (pi, pi->saved_exitset))
-    dead_procinfo (pi, "do_attach: couldn't save traced syscall exits.", 
-		   NOKILL);
-  if (!proc_get_held_signals    (pi, &pi->saved_sighold))
-    dead_procinfo (pi, "do_attach: couldn't save held signals.", NOKILL);
-
-  if ((fail = procfs_debug_inferior (pi)) != 0)
-    dead_procinfo (pi, "do_attach: failed in procfs_debug_inferior", NOKILL);
-
-  /* Let GDB know that the inferior was attached.  */
-  attach_flag = 1;
-  return MERGEPID (pi->pid, proc_get_current_thread (pi));
-}
-
-static void
-do_detach (int signo)
-{
-  procinfo *pi;
-
-  /* Find procinfo for the main process */
-  pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0); /* FIXME: threads */
-  if (signo)
-    if (!proc_set_current_signal (pi, signo))
-      proc_warn (pi, "do_detach, set_current_signal", __LINE__);
-
-  if (!proc_set_traced_signals (pi, &pi->saved_sigset))
-    proc_warn (pi, "do_detach, set_traced_signal", __LINE__);
-
-  if (!proc_set_traced_faults (pi, &pi->saved_fltset))
-    proc_warn (pi, "do_detach, set_traced_faults", __LINE__);
-
-  if (!proc_set_traced_sysentry (pi, pi->saved_entryset))
-    proc_warn (pi, "do_detach, set_traced_sysentry", __LINE__);
-
-  if (!proc_set_traced_sysexit (pi, pi->saved_exitset))
-    proc_warn (pi, "do_detach, set_traced_sysexit", __LINE__);
-
-  if (!proc_set_held_signals (pi, &pi->saved_sighold))
-    proc_warn (pi, "do_detach, set_held_signals", __LINE__);
-
-  if (signo || (proc_flags (pi) & (PR_STOPPED | PR_ISTOP)))
-    if (signo || !(pi->was_stopped) ||
-	query ("Was stopped when attached, make it runnable again? "))
-      {
-	/* Clear any pending signal.  */
-	if (!proc_clear_current_fault (pi))
-	  proc_warn (pi, "do_detach, clear_current_fault", __LINE__);
-
-	if (!proc_set_run_on_last_close (pi))
-	  proc_warn (pi, "do_detach, set_rlc", __LINE__);
-      }
-
-  attach_flag = 0;
-  destroy_procinfo (pi);
-}
-
-/*
- * fetch_registers
- *
- * Since the /proc interface cannot give us individual registers,
- * we pay no attention to the (regno) argument, and just fetch them all.
- * This results in the possibility that we will do unnecessarily many
- * fetches, since we may be called repeatedly for individual registers.
- * So we cache the results, and mark the cache invalid when the process
- * is resumed.
- */
-
-static void
-procfs_fetch_registers (int regno)
-{
-  gdb_fpregset_t *fpregs;
-  gdb_gregset_t  *gregs;
-  procinfo       *pi;
-  int            pid;
-  int            tid;
-
-  pid = PIDGET (inferior_ptid);
-  tid = TIDGET (inferior_ptid);
-
-  /* First look up procinfo for the main process. */
-  pi  = find_procinfo_or_die (pid, 0);
-
-  /* If the event thread is not the same as GDB's requested thread 
-     (ie. inferior_ptid), then look up procinfo for the requested 
-     thread.  */
-  if ((tid != 0) && 
-      (tid != proc_get_current_thread (pi)))
-    pi = find_procinfo_or_die (pid, tid);
-
-  if (pi == NULL)
-    error ("procfs: fetch_registers failed to find procinfo for %s", 
-	   target_pid_to_str (inferior_ptid));
-
-  if ((gregs = proc_get_gregs (pi)) == NULL)
-    proc_error (pi, "fetch_registers, get_gregs", __LINE__);
-
-  supply_gregset (gregs);
-
-  if (FP0_REGNUM >= 0)	/* need floating point? */
-    {
-      if ((regno >= 0 && regno < FP0_REGNUM) ||
-	  regno == PC_REGNUM  ||
-	  (NPC_REGNUM >= 0 && regno == NPC_REGNUM) ||
-	  regno == FP_REGNUM  ||
-	  regno == SP_REGNUM)
-	return;			/* not a floating point register */
-
-      if ((fpregs = proc_get_fpregs (pi)) == NULL)
-	proc_error (pi, "fetch_registers, get_fpregs", __LINE__);
-
-      supply_fpregset (fpregs);
-    }
-}
-
-/* Get ready to modify the registers array.  On machines which store
-   individual registers, this doesn't need to do anything.  On
-   machines which store all the registers in one fell swoop, such as
-   /proc, this makes sure that registers contains all the registers
-   from the program being debugged.  */
-
-static void
-procfs_prepare_to_store (void)
-{
-#ifdef CHILD_PREPARE_TO_STORE
-  CHILD_PREPARE_TO_STORE ();
-#endif
-}
-
-/*
- * store_registers
- *
- * Since the /proc interface will not read individual registers, 
- * we will cache these requests until the process is resumed, and
- * only then write them back to the inferior process.
- *
- * FIXME: is that a really bad idea?  Have to think about cases
- * where writing one register might affect the value of others, etc.
- */
-
-static void
-procfs_store_registers (int regno)
-{
-  gdb_fpregset_t *fpregs;
-  gdb_gregset_t  *gregs;
-  procinfo       *pi;
-  int            pid;
-  int            tid;
-
-  pid = PIDGET (inferior_ptid);
-  tid = TIDGET (inferior_ptid);
-
-  /* First find procinfo for main process */
-  pi  = find_procinfo_or_die (pid, 0);
-
-  /* If current lwp for process is not the same as requested thread
-     (ie. inferior_ptid), then find procinfo for the requested thread.  */
-
-  if ((tid != 0) && 
-      (tid != proc_get_current_thread (pi)))
-    pi = find_procinfo_or_die (pid, tid);
-
-  if (pi == NULL)
-    error ("procfs: store_registers: failed to find procinfo for %s",
-	   target_pid_to_str (inferior_ptid));
-
-  if ((gregs = proc_get_gregs (pi)) == NULL)
-    proc_error (pi, "store_registers, get_gregs", __LINE__);
-
-  fill_gregset (gregs, regno);
-  if (!proc_set_gregs (pi))
-    proc_error (pi, "store_registers, set_gregs", __LINE__);
-
-  if (FP0_REGNUM >= 0)		/* need floating point? */
-    {
-      if ((regno >= 0 && regno < FP0_REGNUM) ||
-	  regno == PC_REGNUM  ||
-	  (NPC_REGNUM >= 0 && regno == NPC_REGNUM) ||
-	  regno == FP_REGNUM  ||
-	  regno == SP_REGNUM)
-	return;			/* not a floating point register */
-
-      if ((fpregs = proc_get_fpregs (pi)) == NULL)
-	proc_error (pi, "store_registers, get_fpregs", __LINE__);
-
-      fill_fpregset (fpregs, regno);
-      if (!proc_set_fpregs (pi))
-	proc_error (pi, "store_registers, set_fpregs", __LINE__);
-    }
-}
-
-static int
-syscall_is_lwp_exit (procinfo *pi, int scall)
-{
-
-#ifdef SYS_lwp_exit
-  if (scall == SYS_lwp_exit)
-    return 1;
-#endif
-#ifdef SYS_lwpexit
-  if (scall == SYS_lwpexit)
-    return 1;
-#endif
-  return 0;
-}
-
-static int
-syscall_is_exit (procinfo *pi, int scall)
-{
-#ifdef SYS_exit
-  if (scall == SYS_exit)
-    return 1;
-#endif
-#ifdef DYNAMIC_SYSCALLS
-  if (find_syscall (pi, "_exit") == scall)
-    return 1;
-#endif
-  return 0;
-}
-
-static int
-syscall_is_exec (procinfo *pi, int scall)
-{
-#ifdef SYS_exec
-  if (scall == SYS_exec)
-    return 1;
-#endif
-#ifdef SYS_execv
-  if (scall == SYS_execv)
-    return 1;
-#endif
-#ifdef SYS_execve
-  if (scall == SYS_execve)
-    return 1;
-#endif
-#ifdef DYNAMIC_SYSCALLS
-  if (find_syscall (pi, "_execve"))
-    return 1;
-  if (find_syscall (pi, "ra_execve"))
-    return 1;
-#endif
-  return 0;
-}
-
-static int
-syscall_is_lwp_create (procinfo *pi, int scall)
-{
-#ifdef SYS_lwp_create
-  if (scall == SYS_lwp_create)
-    return 1;
-#endif
-#ifdef SYS_lwpcreate
-  if (scall == SYS_lwpcreate)
-    return 1;
-#endif
-  return 0;
-}
-
-/*
- * Function: target_wait
- *
- * Retrieve the next stop event from the child process.
- * If child has not stopped yet, wait for it to stop.
- * Translate /proc eventcodes (or possibly wait eventcodes)
- * into gdb internal event codes.
- *
- * Return: id of process (and possibly thread) that incurred the event.
- *         event codes are returned thru a pointer parameter.
- */
-
-static ptid_t
-procfs_wait (ptid_t ptid, struct target_waitstatus *status)
-{
-  /* First cut: loosely based on original version 2.1 */
-  procinfo *pi;
-  int       wstat;
-  int       temp_tid;
-  ptid_t    retval, temp_ptid;
-  int       why, what, flags;
-  int       retry = 0;
-
-wait_again:
-
-  retry++;
-  wstat    = 0;
-  retval   = pid_to_ptid (-1);
-
-  /* Find procinfo for main process */
-  pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
-  if (pi)
-    {
-      /* We must assume that the status is stale now... */
-      pi->status_valid = 0;
-      pi->gregs_valid  = 0;
-      pi->fpregs_valid = 0;
-
-#if 0	/* just try this out... */
-      flags = proc_flags (pi);
-      why   = proc_why (pi);
-      if ((flags & PR_STOPPED) && (why == PR_REQUESTED))
-	pi->status_valid = 0;	/* re-read again, IMMEDIATELY... */
-#endif
-      /* If child is not stopped, wait for it to stop.  */
-      if (!(proc_flags (pi) & (PR_STOPPED | PR_ISTOP)) &&
-	  !proc_wait_for_stop (pi))
-	{
-	  /* wait_for_stop failed: has the child terminated? */
-	  if (errno == ENOENT)
-	    {
-	      int wait_retval;
-
-	      /* /proc file not found; presumably child has terminated. */
-	      wait_retval = wait (&wstat); /* "wait" for the child's exit  */
-
-	      if (wait_retval != PIDGET (inferior_ptid)) /* wrong child? */
-		error ("procfs: couldn't stop process %d: wait returned %d\n",
-		       PIDGET (inferior_ptid), wait_retval);
-	      /* FIXME: might I not just use waitpid?
-		 Or try find_procinfo to see if I know about this child? */
-	      retval = pid_to_ptid (wait_retval);
-	    }
-	  else if (errno == EINTR)
-	    goto wait_again;
-	  else
-	    {
-	      /* Unknown error from wait_for_stop. */
-	      proc_error (pi, "target_wait (wait_for_stop)", __LINE__);
-	    }
-	}
-      else
-	{
-	  /* This long block is reached if either:
-	     a) the child was already stopped, or
-	     b) we successfully waited for the child with wait_for_stop.
-	     This block will analyze the /proc status, and translate it
-	     into a waitstatus for GDB.
-
-	     If we actually had to call wait because the /proc file
-	     is gone (child terminated), then we skip this block, 
-	     because we already have a waitstatus.  */
-
-	  flags = proc_flags (pi);
-	  why   = proc_why (pi);
-	  what  = proc_what (pi);
-
-	  if (flags & (PR_STOPPED | PR_ISTOP))
-	    {
-#ifdef PR_ASYNC
-	      /* If it's running async (for single_thread control),
-		 set it back to normal again.  */
-	      if (flags & PR_ASYNC)
-		if (!proc_unset_async (pi))
-		  proc_error (pi, "target_wait, unset_async", __LINE__);
-#endif
-
-	      if (info_verbose)
-		proc_prettyprint_why (why, what, 1);
-
-	      /* The 'pid' we will return to GDB is composed of
-		 the process ID plus the lwp ID.  */
-	      retval = MERGEPID (pi->pid, proc_get_current_thread (pi));
-
-	      switch (why) {
-	      case PR_SIGNALLED:
-		wstat = (what << 8) | 0177;
-		break;
-	      case PR_SYSENTRY:
-		if (syscall_is_lwp_exit (pi, what))
-		  {
-		    printf_filtered ("[%s exited]\n",
-				     target_pid_to_str (retval));
-		    delete_thread (retval);
-		    status->kind = TARGET_WAITKIND_SPURIOUS;
-		    return retval;
-		  }
-		else if (syscall_is_exit (pi, what))
-		  {
-		    /* Handle SYS_exit call only */
-		    /* Stopped at entry to SYS_exit.
-		       Make it runnable, resume it, then use 
-		       the wait system call to get its exit code.
-		       Proc_run_process always clears the current 
-		       fault and signal.
-		       Then return its exit status.  */
-		    pi->status_valid = 0;
-		    wstat = 0;
-		    /* FIXME: what we should do is return 
-		       TARGET_WAITKIND_SPURIOUS.  */
-		    if (!proc_run_process (pi, 0, 0))
-		      proc_error (pi, "target_wait, run_process", __LINE__);
-		    if (attach_flag)
-		      {
-			/* Don't call wait: simulate waiting for exit, 
-			   return a "success" exit code.  Bogus: what if
-			   it returns something else?  */
-			wstat = 0;
-			retval = inferior_ptid;  /* ? ? ? */
-		      }
-		    else
-		      {
-			int temp = wait (&wstat);
-
-			/* FIXME: shouldn't I make sure I get the right
-			   event from the right process?  If (for
-			   instance) I have killed an earlier inferior
-			   process but failed to clean up after it
-			   somehow, I could get its termination event
-			   here.  */
-
-			/* If wait returns -1, that's what we return to GDB. */
-			if (temp < 0)
-			  retval = pid_to_ptid (temp);
-		      }
-		  }
-		else
-		  {
-		    printf_filtered ("procfs: trapped on entry to ");
-		    proc_prettyprint_syscall (proc_what (pi), 0);
-		    printf_filtered ("\n");
-#ifndef PIOCSSPCACT
-		    {
-		      long i, nsysargs, *sysargs;
-
-		      if ((nsysargs = proc_nsysarg (pi)) > 0 &&
-			  (sysargs  = proc_sysargs (pi)) != NULL)
-			{
-			  printf_filtered ("%ld syscall arguments:\n", nsysargs);
-			  for (i = 0; i < nsysargs; i++)
-			    printf_filtered ("#%ld: 0x%08lx\n", 
-					     i, sysargs[i]);
-			}
-
-		    }
-#endif
-		    if (status)
-		      {
-			/* How to exit gracefully, returning "unknown event" */
-			status->kind = TARGET_WAITKIND_SPURIOUS;
-			return inferior_ptid;
-		      }
-		    else
-		      {
-			/* How to keep going without returning to wfi: */
-			target_resume (ptid, 0, TARGET_SIGNAL_0);
-			goto wait_again;
-		      }
-		  }
-		break;
-	      case PR_SYSEXIT:
-		if (syscall_is_exec (pi, what))
-		  {
-		    /* Hopefully this is our own "fork-child" execing
-		       the real child.  Hoax this event into a trap, and
-		       GDB will see the child about to execute its start
-		       address. */
-		    wstat = (SIGTRAP << 8) | 0177;
-		  }
-		else if (syscall_is_lwp_create (pi, what))
-		  {
-		    /*
-		     * This syscall is somewhat like fork/exec.
-		     * We will get the event twice: once for the parent LWP,
-		     * and once for the child.  We should already know about
-		     * the parent LWP, but the child will be new to us.  So,
-		     * whenever we get this event, if it represents a new
-		     * thread, simply add the thread to the list.
-		     */
-
-		    /* If not in procinfo list, add it.  */
-		    temp_tid = proc_get_current_thread (pi);
-		    if (!find_procinfo (pi->pid, temp_tid))
-		      create_procinfo  (pi->pid, temp_tid);
-
-		    temp_ptid = MERGEPID (pi->pid, temp_tid);
-		    /* If not in GDB's thread list, add it.  */
-		    if (!in_thread_list (temp_ptid))
-		      {
-			printf_filtered ("[New %s]\n",
-					 target_pid_to_str (temp_ptid));
-			add_thread (temp_ptid);
-		      }
-		    /* Return to WFI, but tell it to immediately resume. */
-		    status->kind = TARGET_WAITKIND_SPURIOUS;
-		    return inferior_ptid;
-		  }
-		else if (syscall_is_lwp_exit (pi, what))
-		  {
-		    printf_filtered ("[%s exited]\n",
-				     target_pid_to_str (retval));
-		    delete_thread (retval);
-		    status->kind = TARGET_WAITKIND_SPURIOUS;
-		    return retval;
-		  }
-		else if (0)
-		  {
-		    /* FIXME:  Do we need to handle SYS_sproc,
-		       SYS_fork, or SYS_vfork here?  The old procfs
-		       seemed to use this event to handle threads on
-		       older (non-LWP) systems, where I'm assuming
-		       that threads were actually separate processes. 
-		       Irix, maybe?  Anyway, low priority for now.  */
-		  }
-		else
-		  {
-		    printf_filtered ("procfs: trapped on exit from ");
-		    proc_prettyprint_syscall (proc_what (pi), 0);
-		    printf_filtered ("\n");
-#ifndef PIOCSSPCACT
-		    {
-		      long i, nsysargs, *sysargs;
-
-		      if ((nsysargs = proc_nsysarg (pi)) > 0 &&
-			  (sysargs  = proc_sysargs (pi)) != NULL)
-			{
-			  printf_filtered ("%ld syscall arguments:\n", nsysargs);
-			  for (i = 0; i < nsysargs; i++)
-			    printf_filtered ("#%ld: 0x%08lx\n", 
-					     i, sysargs[i]);
-			}
-		    }
-#endif
-		    status->kind = TARGET_WAITKIND_SPURIOUS;
-		    return inferior_ptid;
-		  }
-		break;
-	      case PR_REQUESTED:
-#if 0	/* FIXME */
-		wstat = (SIGSTOP << 8) | 0177;
-		break;
-#else
-		if (retry < 5)
-		  {
-		    printf_filtered ("Retry #%d:\n", retry);
-		    pi->status_valid = 0;
-		    goto wait_again;
-		  }
-		else
-		  {
-		    /* If not in procinfo list, add it.  */
-		    temp_tid = proc_get_current_thread (pi);
-		    if (!find_procinfo (pi->pid, temp_tid))
-		      create_procinfo  (pi->pid, temp_tid);
-
-		    /* If not in GDB's thread list, add it.  */
-		    temp_ptid = MERGEPID (pi->pid, temp_tid);
-		    if (!in_thread_list (temp_ptid))
-		      {
-			printf_filtered ("[New %s]\n", 
-					 target_pid_to_str (temp_ptid));
-			add_thread (temp_ptid);
-		      }
-
-		    status->kind = TARGET_WAITKIND_STOPPED;
-		    status->value.sig = 0;
-		    return retval;
-		  }
-#endif
-	      case PR_JOBCONTROL:
-		wstat = (what << 8) | 0177;
-		break;
-	      case PR_FAULTED:
-		switch (what) {	/* FIXME: FAULTED_USE_SIGINFO */
-#ifdef FLTWATCH
-		case FLTWATCH:
-		  wstat = (SIGTRAP << 8) | 0177;
-		  break;
-#endif
-#ifdef FLTKWATCH
-		case FLTKWATCH:
-		  wstat = (SIGTRAP << 8) | 0177;
-		  break;
-#endif
-		  /* FIXME: use si_signo where possible. */
-		case FLTPRIV:
-#if (FLTILL != FLTPRIV)		/* avoid "duplicate case" error */
-		case FLTILL:
-#endif
-		  wstat = (SIGILL << 8) | 0177;
-		  break;
-		case FLTBPT:
-#if (FLTTRACE != FLTBPT)	/* avoid "duplicate case" error */
-		case FLTTRACE:
-#endif
-		  wstat = (SIGTRAP << 8) | 0177;
-		  break;
-		case FLTSTACK:
-		case FLTACCESS:
-#if (FLTBOUNDS != FLTSTACK)	/* avoid "duplicate case" error */
-		case FLTBOUNDS:
-#endif
-		  wstat = (SIGSEGV << 8) | 0177;
-		  break;
-		case FLTIOVF:
-		case FLTIZDIV:
-#if (FLTFPE != FLTIOVF)		/* avoid "duplicate case" error */
-		case FLTFPE:
-#endif
-		  wstat = (SIGFPE << 8) | 0177;
-		  break;
-		case FLTPAGE:		/* Recoverable page fault */
-		default:	 /* FIXME: use si_signo if possible for fault */
-		  retval = pid_to_ptid (-1);
-		  printf_filtered ("procfs:%d -- ", __LINE__);
-		  printf_filtered ("child stopped for unknown reason:\n");
-		  proc_prettyprint_why (why, what, 1);
-		  error ("... giving up...");
-		  break;
-		}
-		break;	/* case PR_FAULTED: */
-	      default:	/* switch (why) unmatched */
-		printf_filtered ("procfs:%d -- ", __LINE__);
-		printf_filtered ("child stopped for unknown reason:\n");
-		proc_prettyprint_why (why, what, 1);
-		error ("... giving up...");
-		break;
-	      }
-	      /*
-	       * Got this far without error:
-	       * If retval isn't in the threads database, add it.
-	       */
-	      if (PIDGET (retval) > 0 &&
-		  !ptid_equal (retval, inferior_ptid) &&
-		  !in_thread_list (retval))
-		{
-		  /*
-		   * We have a new thread.  
-		   * We need to add it both to GDB's list and to our own.
-		   * If we don't create a procinfo, resume may be unhappy 
-		   * later.
-		   */
-		  printf_filtered ("[New %s]\n", target_pid_to_str (retval));
-		  add_thread (retval);
-		  if (find_procinfo (PIDGET (retval), TIDGET (retval)) == NULL)
-		    create_procinfo (PIDGET (retval), TIDGET (retval));
-
-		  /* In addition, it's possible that this is the first
-		   * new thread we've seen, in which case we may not 
-		   * have created entries for inferior_ptid yet.
-		   */
-		  if (TIDGET (inferior_ptid) != 0)
-		    {
-		      if (!in_thread_list (inferior_ptid))
-			add_thread (inferior_ptid);
-		      if (find_procinfo (PIDGET (inferior_ptid), 
-					 TIDGET (inferior_ptid)) == NULL)
-			create_procinfo (PIDGET (inferior_ptid), 
-					 TIDGET (inferior_ptid));
-		    }
-		}
-	    }
-	  else	/* flags do not indicate STOPPED */
-	    {
-	      /* surely this can't happen... */
-	      printf_filtered ("procfs:%d -- process not stopped.\n",
-			       __LINE__);
-	      proc_prettyprint_flags (flags, 1);
-	      error ("procfs: ...giving up...");
-	    }
-	}
-
-      if (status)
-	store_waitstatus (status, wstat);
-    }
-
-  return retval;
-}
-
-/* Transfer LEN bytes between GDB address MYADDR and target address
-   MEMADDR.  If DOWRITE is non-zero, transfer them to the target,
-   otherwise transfer them from the target.  TARGET is unused.
-
-   The return value is 0 if an error occurred or no bytes were
-   transferred.  Otherwise, it will be a positive value which
-   indicates the number of bytes transferred between gdb and the
-   target.  (Note that the interface also makes provisions for
-   negative values, but this capability isn't implemented here.) */
-
-static int
-procfs_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int dowrite,
-		    struct mem_attrib *attrib, struct target_ops *target)
-{
-  procinfo *pi;
-  int nbytes = 0;
-
-  /* Find procinfo for main process */
-  pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
-  if (pi->as_fd == 0 &&
-      open_procinfo_files (pi, FD_AS) == 0)
-    {
-      proc_warn (pi, "xfer_memory, open_proc_files", __LINE__);
-      return 0;
-    }
-
-  if (lseek (pi->as_fd, (off_t) memaddr, SEEK_SET) == (off_t) memaddr)
-    {
-      if (dowrite)
-	{
-#ifdef NEW_PROC_API
-	  PROCFS_NOTE ("write memory: ");
-#else
-	  PROCFS_NOTE ("write memory: \n");
-#endif
-	  nbytes = write (pi->as_fd, myaddr, len);
-	}
-      else
-	{
-	  PROCFS_NOTE ("read  memory: \n");
-	  nbytes = read (pi->as_fd, myaddr, len);
-	}
-      if (nbytes < 0)
-	{
-	  nbytes = 0;
-	}
-    }
-  return nbytes;
-}
-
-/*
- * Function: invalidate_cache
- *
- * Called by target_resume before making child runnable.
- * Mark cached registers and status's invalid.
- * If there are "dirty" caches that need to be written back
- * to the child process, do that.
- *
- * File descriptors are also cached.  
- * As they are a limited resource, we cannot hold onto them indefinitely.
- * However, as they are expensive to open, we don't want to throw them
- * away indescriminately either.  As a compromise, we will keep the
- * file descriptors for the parent process, but discard any file
- * descriptors we may have accumulated for the threads.
- *
- * Return value:
- * As this function is called by iterate_over_threads, it always 
- * returns zero (so that iterate_over_threads will keep iterating).
- */
-
-
-static int
-invalidate_cache (procinfo *parent, procinfo *pi, void *ptr)
-{
-  /*
-   * About to run the child; invalidate caches and do any other cleanup.
-   */
-
-#if 0
-  if (pi->gregs_dirty)
-    if (parent == NULL ||
-	proc_get_current_thread (parent) != pi->tid)
-      if (!proc_set_gregs (pi))	/* flush gregs cache */
-	proc_warn (pi, "target_resume, set_gregs",
-		   __LINE__);
-  if (FP0_REGNUM >= 0)
-    if (pi->fpregs_dirty)
-      if (parent == NULL ||
-	  proc_get_current_thread (parent) != pi->tid)
-	if (!proc_set_fpregs (pi))	/* flush fpregs cache */
-	  proc_warn (pi, "target_resume, set_fpregs", 
-		     __LINE__);
-#endif
-
-  if (parent != NULL)
-    {
-      /* The presence of a parent indicates that this is an LWP.
-	 Close any file descriptors that it might have open.  
-	 We don't do this to the master (parent) procinfo.  */
-
-      close_procinfo_files (pi);
-    }
-  pi->gregs_valid   = 0;
-  pi->fpregs_valid  = 0;
-#if 0
-  pi->gregs_dirty   = 0;
-  pi->fpregs_dirty  = 0;
-#endif
-  pi->status_valid  = 0;
-  pi->threads_valid = 0;
-
-  return 0;
-}
-
-#if 0
-/*
- * Function: make_signal_thread_runnable
- *
- * A callback function for iterate_over_threads.
- * Find the asynchronous signal thread, and make it runnable.
- * See if that helps matters any.
- */
-
-static int
-make_signal_thread_runnable (procinfo *process, procinfo *pi, void *ptr)
-{
-#ifdef PR_ASLWP
-  if (proc_flags (pi) & PR_ASLWP)
-    {
-      if (!proc_run_process (pi, 0, -1))
-	proc_error (pi, "make_signal_thread_runnable", __LINE__);
-      return 1;
-    }
-#endif
-  return 0;
-}
-#endif
-
-/*
- * Function: target_resume
- *
- * Make the child process runnable.  Normally we will then call
- * procfs_wait and wait for it to stop again (unles gdb is async).
- *
- * Arguments:
- *  step:  if true, then arrange for the child to stop again 
- *         after executing a single instruction.
- *  signo: if zero, then cancel any pending signal.
- *         If non-zero, then arrange for the indicated signal 
- *         to be delivered to the child when it runs.
- *  pid:   if -1, then allow any child thread to run.
- *         if non-zero, then allow only the indicated thread to run.
- *******   (not implemented yet)
- */
-
-static void
-procfs_resume (ptid_t ptid, int step, enum target_signal signo)
-{
-  procinfo *pi, *thread;
-  int native_signo;
-
-  /* 2.1: 
-     prrun.prflags |= PRSVADDR;
-     prrun.pr_vaddr = $PC;	   set resume address 
-     prrun.prflags |= PRSTRACE;    trace signals in pr_trace (all)
-     prrun.prflags |= PRSFAULT;    trace faults in pr_fault (all but PAGE) 
-     prrun.prflags |= PRCFAULT;    clear current fault.
-
-     PRSTRACE and PRSFAULT can be done by other means
-     	(proc_trace_signals, proc_trace_faults)
-     PRSVADDR is unnecessary.
-     PRCFAULT may be replaced by a PIOCCFAULT call (proc_clear_current_fault)
-     This basically leaves PRSTEP and PRCSIG.
-     PRCSIG is like PIOCSSIG (proc_clear_current_signal).
-     So basically PR_STEP is the sole argument that must be passed
-     to proc_run_process (for use in the prrun struct by ioctl). */
-
-  /* Find procinfo for main process */
-  pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
-
-  /* First cut: ignore pid argument */
-  errno = 0;
-
-  /* Convert signal to host numbering.  */
-  if (signo == 0 ||
-      (signo == TARGET_SIGNAL_STOP && pi->ignore_next_sigstop))
-    native_signo = 0;
-  else
-    native_signo = target_signal_to_host (signo);
-
-  pi->ignore_next_sigstop = 0;
-
-  /* Running the process voids all cached registers and status. */
-  /* Void the threads' caches first */
-  proc_iterate_over_threads (pi, invalidate_cache, NULL); 
-  /* Void the process procinfo's caches.  */
-  invalidate_cache (NULL, pi, NULL);
-
-  if (PIDGET (ptid) != -1)
-    {
-      /* Resume a specific thread, presumably suppressing the others. */
-      thread = find_procinfo (PIDGET (ptid), TIDGET (ptid));
-      if (thread != NULL)
-	{
-	  if (thread->tid != 0)
-	    {
-	      /* We're to resume a specific thread, and not the others.
-	       * Set the child process's PR_ASYNC flag.
-	       */
-#ifdef PR_ASYNC
-	      if (!proc_set_async (pi))
-		proc_error (pi, "target_resume, set_async", __LINE__);
-#endif
-#if 0
-	      proc_iterate_over_threads (pi, 
-					 make_signal_thread_runnable,
-					 NULL);
-#endif
-	      pi = thread;	/* substitute the thread's procinfo for run */
-	    }
-	}
-    }
-
-  if (!proc_run_process (pi, step, native_signo))
-    {
-      if (errno == EBUSY)
-	warning ("resume: target already running.  Pretend to resume, and hope for the best!\n");
-      else
-	proc_error (pi, "target_resume", __LINE__);
-    }
-}
-
-/*
- * Function: register_gdb_signals
- *
- * Traverse the list of signals that GDB knows about 
- * (see "handle" command), and arrange for the target
- * to be stopped or not, according to these settings.
- *
- * Returns non-zero for success, zero for failure.
- */
-
-static int
-register_gdb_signals (procinfo *pi, gdb_sigset_t *signals)
-{
-  int signo;
-
-  for (signo = 0; signo < NSIG; signo ++)
-    if (signal_stop_state  (target_signal_from_host (signo)) == 0 &&
-	signal_print_state (target_signal_from_host (signo)) == 0 &&
-	signal_pass_state  (target_signal_from_host (signo)) == 1)
-      prdelset (signals, signo);
-    else
-      praddset (signals, signo);
-
-  return proc_set_traced_signals (pi, signals);
-}
-
-/*
- * Function: target_notice_signals
- *
- * Set up to trace signals in the child process.
- */
-
-static void
-procfs_notice_signals (ptid_t ptid)
-{
-  gdb_sigset_t signals;
-  procinfo *pi = find_procinfo_or_die (PIDGET (ptid), 0);
-
-  if (proc_get_traced_signals (pi, &signals) &&
-      register_gdb_signals    (pi, &signals))
-    return;
-  else
-    proc_error (pi, "notice_signals", __LINE__);
-}
-
-/*
- * Function: target_files_info
- *
- * Print status information about the child process.
- */
-
-static void
-procfs_files_info (struct target_ops *ignore)
-{
-  printf_filtered ("\tUsing the running image of %s %s via /proc.\n",
-		   attach_flag? "attached": "child", 
-		   target_pid_to_str (inferior_ptid));
-}
-
-/*
- * Function: target_open
- *
- * A dummy: you don't open procfs.
- */
-
-static void
-procfs_open (char *args, int from_tty)
-{
-  error ("Use the \"run\" command to start a Unix child process.");
-}
-
-/*
- * Function: target_can_run
- *
- * This tells GDB that this target vector can be invoked 
- * for "run" or "attach".
- */
-
-int procfs_suppress_run = 0;	/* Non-zero if procfs should pretend not to
-				   be a runnable target.  Used by targets
-				   that can sit atop procfs, such as solaris
-				   thread support.  */
-
-
-static int
-procfs_can_run (void)
-{
-  /* This variable is controlled by modules that sit atop procfs that
-     may layer their own process structure atop that provided here.
-     sol-thread.c does this because of the Solaris two-level thread
-     model.  */
-  
-  /* NOTE: possibly obsolete -- use the thread_stratum approach instead. */
-
-  return !procfs_suppress_run;
-}
-
-/*
- * Function: target_stop
- *
- * Stop the child process asynchronously, as when the
- * gdb user types control-c or presses a "stop" button.
- *
- * Works by sending kill(SIGINT) to the child's process group.
- */
-
-static void
-procfs_stop (void)
-{
-  extern pid_t inferior_process_group;
-
-  kill (-inferior_process_group, SIGINT);
-}
-
-/*
- * Function: unconditionally_kill_inferior
- *
- * Make it die.  Wait for it to die.  Clean up after it.
- * Note: this should only be applied to the real process, 
- * not to an LWP, because of the check for parent-process.
- * If we need this to work for an LWP, it needs some more logic.
- */
-
-static void
-unconditionally_kill_inferior (procinfo *pi)
-{
-  int parent_pid;
-
-  parent_pid = proc_parent_pid (pi);
-#ifdef PROCFS_NEED_CLEAR_CURSIG_FOR_KILL
-  /* FIXME: use access functions */
-  /* Alpha OSF/1-3.x procfs needs a clear of the current signal
-     before the PIOCKILL, otherwise it might generate a corrupted core
-     file for the inferior.  */
-  if (ioctl (pi->ctl_fd, PIOCSSIG, NULL) < 0)
-    {
-      printf_filtered ("unconditionally_kill: SSIG failed!\n");
-    }
-#endif
-#ifdef PROCFS_NEED_PIOCSSIG_FOR_KILL
-  /* Alpha OSF/1-2.x procfs needs a PIOCSSIG call with a SIGKILL signal
-     to kill the inferior, otherwise it might remain stopped with a
-     pending SIGKILL.
-     We do not check the result of the PIOCSSIG, the inferior might have
-     died already.  */
-  {
-    gdb_siginfo_t newsiginfo;
-
-    memset ((char *) &newsiginfo, 0, sizeof (newsiginfo));
-    newsiginfo.si_signo = SIGKILL;
-    newsiginfo.si_code = 0;
-    newsiginfo.si_errno = 0;
-    newsiginfo.si_pid = getpid ();
-    newsiginfo.si_uid = getuid ();
-    /* FIXME: use proc_set_current_signal */
-    ioctl (pi->ctl_fd, PIOCSSIG, &newsiginfo);
-  }
-#else /* PROCFS_NEED_PIOCSSIG_FOR_KILL */
-  if (!proc_kill (pi, SIGKILL))
-    proc_error (pi, "unconditionally_kill, proc_kill", __LINE__);
-#endif /* PROCFS_NEED_PIOCSSIG_FOR_KILL */
-  destroy_procinfo (pi);
-
-  /* If pi is GDB's child, wait for it to die.  */
-  if (parent_pid == getpid ())
-    /* FIXME: should we use waitpid to make sure we get the right event?  
-       Should we check the returned event?  */
-    {
-#if 0
-      int status, ret;
-
-      ret = waitpid (pi->pid, &status, 0);
-#else
-      wait (NULL);
-#endif
-    }
-}
-
-/*
- * Function: target_kill_inferior
- *
- * We're done debugging it, and we want it to go away.
- * Then we want GDB to forget all about it.
- */
-
-static void 
-procfs_kill_inferior (void)
-{
-  if (!ptid_equal (inferior_ptid, null_ptid)) /* ? */
-    {
-      /* Find procinfo for main process */
-      procinfo *pi = find_procinfo (PIDGET (inferior_ptid), 0);
-
-      if (pi)
-	unconditionally_kill_inferior (pi);
-      target_mourn_inferior ();
-    }
-}
-
-/*
- * Function: target_mourn_inferior
- *
- * Forget we ever debugged this thing!
- */
-
-static void 
-procfs_mourn_inferior (void)
-{
-  procinfo *pi;
-
-  if (!ptid_equal (inferior_ptid, null_ptid))
-    {
-      /* Find procinfo for main process */
-      pi = find_procinfo (PIDGET (inferior_ptid), 0);
-      if (pi)
-	destroy_procinfo (pi);
-    }
-  unpush_target (&procfs_ops);
-  generic_mourn_inferior ();
-}
-
-/*
- * Function: init_inferior
- *
- * When GDB forks to create a runnable inferior process, 
- * this function is called on the parent side of the fork.
- * It's job is to do whatever is necessary to make the child
- * ready to be debugged, and then wait for the child to synchronize.
- */
-
-static void 
-procfs_init_inferior (int pid)
-{
-  procinfo *pi;
-  gdb_sigset_t signals;
-  int fail;
-
-  /* This routine called on the parent side (GDB side)
-     after GDB forks the inferior.  */
-
-  push_target (&procfs_ops);
-
-  if ((pi = create_procinfo (pid, 0)) == NULL)
-    perror ("procfs: out of memory in 'init_inferior'");
-
-  if (!open_procinfo_files (pi, FD_CTL))
-    proc_error (pi, "init_inferior, open_proc_files", __LINE__);
-
-  /*
-    xmalloc			// done
-    open_procinfo_files		// done
-    link list			// done
-    prfillset (trace)
-    procfs_notice_signals
-    prfillset (fault)
-    prdelset (FLTPAGE)
-    PIOCWSTOP
-    PIOCSFAULT
-    */
-
-  /* If not stopped yet, wait for it to stop. */
-  if (!(proc_flags (pi) & PR_STOPPED) &&
-      !(proc_wait_for_stop (pi)))
-    dead_procinfo (pi, "init_inferior: wait_for_stop failed", KILL);
-
-  /* Save some of the /proc state to be restored if we detach.  */
-  /* FIXME: Why?  In case another debugger was debugging it?
-     We're it's parent, for Ghu's sake! */
-  if (!proc_get_traced_signals  (pi, &pi->saved_sigset))
-    proc_error (pi, "init_inferior, get_traced_signals", __LINE__);
-  if (!proc_get_held_signals    (pi, &pi->saved_sighold))
-    proc_error (pi, "init_inferior, get_held_signals", __LINE__);
-  if (!proc_get_traced_faults   (pi, &pi->saved_fltset))
-    proc_error (pi, "init_inferior, get_traced_faults", __LINE__);
-  if (!proc_get_traced_sysentry (pi, pi->saved_entryset))
-    proc_error (pi, "init_inferior, get_traced_sysentry", __LINE__);
-  if (!proc_get_traced_sysexit  (pi, pi->saved_exitset))
-    proc_error (pi, "init_inferior, get_traced_sysexit", __LINE__);
-
-  /* Register to trace selected signals in the child. */
-  prfillset (&signals);
-  if (!register_gdb_signals (pi, &signals))
-    proc_error (pi, "init_inferior, register_signals", __LINE__);
-
-  if ((fail = procfs_debug_inferior (pi)) != 0)
-    proc_error (pi, "init_inferior (procfs_debug_inferior)", fail);
-
-  /* FIXME: logically, we should really be turning OFF run-on-last-close,
-     and possibly even turning ON kill-on-last-close at this point.  But
-     I can't make that change without careful testing which I don't have
-     time to do right now...  */
-  /* Turn on run-on-last-close flag so that the child
-     will die if GDB goes away for some reason.  */
-  if (!proc_set_run_on_last_close (pi))
-    proc_error (pi, "init_inferior, set_RLC", __LINE__);
-
-  /* The 'process ID' we return to GDB is composed of
-     the actual process ID plus the lwp ID. */
-  inferior_ptid = MERGEPID (pi->pid, proc_get_current_thread (pi));
-
-#ifdef START_INFERIOR_TRAPS_EXPECTED
-  startup_inferior (START_INFERIOR_TRAPS_EXPECTED);
-#else
-  /* One trap to exec the shell, one to exec the program being debugged.  */
-  startup_inferior (2);
-#endif /* START_INFERIOR_TRAPS_EXPECTED */
-}
-
-/*
- * Function: set_exec_trap
- *
- * When GDB forks to create a new process, this function is called
- * on the child side of the fork before GDB exec's the user program.
- * Its job is to make the child minimally debuggable, so that the
- * parent GDB process can connect to the child and take over.
- * This function should do only the minimum to make that possible,
- * and to synchronize with the parent process.  The parent process
- * should take care of the details.
- */
-
-static void
-procfs_set_exec_trap (void)
-{
-  /* This routine called on the child side (inferior side)
-     after GDB forks the inferior.  It must use only local variables,
-     because it may be sharing data space with its parent.  */
-
-  procinfo *pi;
-  sysset_t *exitset;
-
-  if ((pi = create_procinfo (getpid (), 0)) == NULL)
-    perror_with_name ("procfs: create_procinfo failed in child.");
-
-  if (open_procinfo_files (pi, FD_CTL) == 0)
-    {
-      proc_warn (pi, "set_exec_trap, open_proc_files", __LINE__);
-      gdb_flush (gdb_stderr);
-      /* no need to call "dead_procinfo", because we're going to exit. */
-      _exit (127);
-    }
-
-#ifdef PRFS_STOPEXEC	/* defined on OSF */
-  /* OSF method for tracing exec syscalls.  Quoting:
-     Under Alpha OSF/1 we have to use a PIOCSSPCACT ioctl to trace
-     exits from exec system calls because of the user level loader.  */
-  /* FIXME: make nice and maybe move into an access function. */
-  {
-    int prfs_flags;
-
-    if (ioctl (pi->ctl_fd, PIOCGSPCACT, &prfs_flags) < 0)
-      {
-	proc_warn (pi, "set_exec_trap (PIOCGSPCACT)", __LINE__);
-	gdb_flush (gdb_stderr);
-	_exit (127);
-      }
-    prfs_flags |= PRFS_STOPEXEC;
-
-    if (ioctl (pi->ctl_fd, PIOCSSPCACT, &prfs_flags) < 0)
-      {
-	proc_warn (pi, "set_exec_trap (PIOCSSPCACT)", __LINE__);
-	gdb_flush (gdb_stderr);
-	_exit (127);
-      }
-  }
-#else /* not PRFS_STOPEXEC */
-  /* Everyone else's (except OSF) method for tracing exec syscalls */
-  /* GW: Rationale...
-     Not all systems with /proc have all the exec* syscalls with the same
-     names.  On the SGI, for example, there is no SYS_exec, but there
-     *is* a SYS_execv.  So, we try to account for that. */
-
-  exitset = sysset_t_alloc (pi);
-  gdb_premptysysset (exitset);
-#ifdef SYS_exec
-  gdb_praddsysset (exitset, SYS_exec);
-#endif
-#ifdef SYS_execve
-  gdb_praddsysset (exitset, SYS_execve);
-#endif
-#ifdef SYS_execv
-  gdb_praddsysset (exitset, SYS_execv);
-#endif
-#ifdef DYNAMIC_SYSCALLS
-  {
-    int callnum = find_syscall (pi, "execve");
-
-    if (callnum >= 0)
-      gdb_praddsysset (exitset, callnum);
-
-    callnum = find_syscall (pi, "ra_execve");
-    if (callnum >= 0)
-      gdb_praddsysset (exitset, callnum);
-  }
-#endif /* DYNAMIC_SYSCALLS */
-
-  if (!proc_set_traced_sysexit (pi, exitset))
-    {
-      proc_warn (pi, "set_exec_trap, set_traced_sysexit", __LINE__);
-      gdb_flush (gdb_stderr);
-      _exit (127);
-    }
-#endif /* PRFS_STOPEXEC */
-
-  /* FIXME: should this be done in the parent instead? */
-  /* Turn off inherit on fork flag so that all grand-children
-     of gdb start with tracing flags cleared.  */
-  if (!proc_unset_inherit_on_fork (pi))
-    proc_warn (pi, "set_exec_trap, unset_inherit", __LINE__);
-
-  /* Turn off run on last close flag, so that the child process
-     cannot run away just because we close our handle on it.
-     We want it to wait for the parent to attach.  */
-  if (!proc_unset_run_on_last_close (pi))
-    proc_warn (pi, "set_exec_trap, unset_RLC", __LINE__);
-
-  /* FIXME: No need to destroy the procinfo -- 
-     we have our own address space, and we're about to do an exec! */
-  /*destroy_procinfo (pi);*/
-}
-
-/*
- * Function: create_inferior
- *
- * This function is called BEFORE gdb forks the inferior process.
- * Its only real responsibility is to set things up for the fork, 
- * and tell GDB which two functions to call after the fork (one
- * for the parent, and one for the child).
- * 
- * This function does a complicated search for a unix shell program,
- * which it then uses to parse arguments and environment variables
- * to be sent to the child.  I wonder whether this code could not
- * be abstracted out and shared with other unix targets such as
- * infptrace?
- */
-
-static void
-procfs_create_inferior (char *exec_file, char *allargs, char **env)
-{
-  char *shell_file = getenv ("SHELL");
-  char *tryname;
-  if (shell_file != NULL && strchr (shell_file, '/') == NULL)
-    {
-
-      /* We will be looking down the PATH to find shell_file.  If we
-	 just do this the normal way (via execlp, which operates by
-	 attempting an exec for each element of the PATH until it
-	 finds one which succeeds), then there will be an exec for
-	 each failed attempt, each of which will cause a PR_SYSEXIT
-	 stop, and we won't know how to distinguish the PR_SYSEXIT's
-	 for these failed execs with the ones for successful execs
-	 (whether the exec has succeeded is stored at that time in the
-	 carry bit or some such architecture-specific and
-	 non-ABI-specified place).
-
-	 So I can't think of anything better than to search the PATH
-	 now.  This has several disadvantages: (1) There is a race
-	 condition; if we find a file now and it is deleted before we
-	 exec it, we lose, even if the deletion leaves a valid file
-	 further down in the PATH, (2) there is no way to know exactly
-	 what an executable (in the sense of "capable of being
-	 exec'd") file is.  Using access() loses because it may lose
-	 if the caller is the superuser; failing to use it loses if
-	 there are ACLs or some such.  */
-
-      char *p;
-      char *p1;
-      /* FIXME-maybe: might want "set path" command so user can change what
-	 path is used from within GDB.  */
-      char *path = getenv ("PATH");
-      int len;
-      struct stat statbuf;
-
-      if (path == NULL)
-	path = "/bin:/usr/bin";
-
-      tryname = alloca (strlen (path) + strlen (shell_file) + 2);
-      for (p = path; p != NULL; p = p1 ? p1 + 1: NULL)
-	{
-	  p1 = strchr (p, ':');
-	  if (p1 != NULL)
-	    len = p1 - p;
-	  else
-	    len = strlen (p);
-	  strncpy (tryname, p, len);
-	  tryname[len] = '\0';
-	  strcat (tryname, "/");
-	  strcat (tryname, shell_file);
-	  if (access (tryname, X_OK) < 0)
-	    continue;
-	  if (stat (tryname, &statbuf) < 0)
-	    continue;
-	  if (!S_ISREG (statbuf.st_mode))
-	    /* We certainly need to reject directories.  I'm not quite
-	       as sure about FIFOs, sockets, etc., but I kind of doubt
-	       that people want to exec() these things.  */
-	    continue;
-	  break;
-	}
-      if (p == NULL)
-	/* Not found.  This must be an error rather than merely passing
-	   the file to execlp(), because execlp() would try all the
-	   exec()s, causing GDB to get confused.  */
-	error ("procfs:%d -- Can't find shell %s in PATH",
-	       __LINE__, shell_file);
-
-      shell_file = tryname;
-    }
-
-  fork_inferior (exec_file, allargs, env, procfs_set_exec_trap, 
-		 procfs_init_inferior, NULL, shell_file);
-
-  /* We are at the first instruction we care about.  */
-  /* Pedal to the metal... */
-
-  proceed ((CORE_ADDR) -1, TARGET_SIGNAL_0, 0);
-}
-
-/*
- * Function: notice_thread
- *
- * Callback for find_new_threads.
- * Calls "add_thread".
- */
-
-static int
-procfs_notice_thread (procinfo *pi, procinfo *thread, void *ptr)
-{
-  ptid_t gdb_threadid = MERGEPID (pi->pid, thread->tid);
-
-  if (!in_thread_list (gdb_threadid))
-    add_thread (gdb_threadid);
-
-  return 0;
-}
-
-/*
- * Function: target_find_new_threads
- *
- * Query all the threads that the target knows about, 
- * and give them back to GDB to add to its list.
- */
-
-void
-procfs_find_new_threads (void)
-{
-  procinfo *pi;
-
-  /* Find procinfo for main process */
-  pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
-  proc_update_threads (pi);
-  proc_iterate_over_threads (pi, procfs_notice_thread, NULL);
-}
-
-/* 
- * Function: target_thread_alive
- *
- * Return true if the thread is still 'alive'.
- *
- * This guy doesn't really seem to be doing his job.
- * Got to investigate how to tell when a thread is really gone.
- */
-
-static int
-procfs_thread_alive (ptid_t ptid)
-{
-  int proc, thread;
-  procinfo *pi;
-
-  proc    = PIDGET (ptid);
-  thread  = TIDGET (ptid);
-  /* If I don't know it, it ain't alive! */
-  if ((pi = find_procinfo (proc, thread)) == NULL)
-    return 0;
-
-  /* If I can't get its status, it ain't alive!
-     What's more, I need to forget about it!  */
-  if (!proc_get_status (pi))
-    {
-      destroy_procinfo (pi);
-      return 0;
-    }
-  /* I couldn't have got its status if it weren't alive, so it's alive.  */
-  return 1;
-}
-
-/*
- * Function: target_pid_to_str
- *
- * Return a string to be used to identify the thread in 
- * the "info threads" display.
- */
-
-char *
-procfs_pid_to_str (ptid_t ptid)
-{
-  static char buf[80];
-  int proc, thread;
-  procinfo *pi;
-
-  proc    = PIDGET (ptid);
-  thread  = TIDGET (ptid);
-  pi      = find_procinfo (proc, thread);
-
-  if (thread == 0)
-    sprintf (buf, "Process %d", proc);
-  else
-    sprintf (buf, "LWP %d", thread);
-  return &buf[0];
-}
-
-/*
- * Function: procfs_set_watchpoint
- * Insert a watchpoint
- */
-
-int 
-procfs_set_watchpoint (ptid_t ptid, CORE_ADDR addr, int len, int rwflag,
-                       int after)
-{
-#ifndef UNIXWARE
-#ifndef AIX5
-  int       pflags = 0;
-  procinfo *pi; 
-
-  pi = find_procinfo_or_die (PIDGET (ptid) == -1 ? 
-			     PIDGET (inferior_ptid) : PIDGET (ptid), 0);
-
-  /* Translate from GDB's flags to /proc's */
-  if (len > 0)	/* len == 0 means delete watchpoint */
-    {
-      switch (rwflag) {		/* FIXME: need an enum! */
-      case hw_write:		/* default watchpoint (write) */
-	pflags = WRITE_WATCHFLAG;
-	break;
-      case hw_read:		/* read watchpoint */
-	pflags = READ_WATCHFLAG;
-	break;
-      case hw_access:		/* access watchpoint */
-	pflags = READ_WATCHFLAG | WRITE_WATCHFLAG;
-	break;
-      case hw_execute:		/* execution HW breakpoint */
-	pflags = EXEC_WATCHFLAG;
-	break;
-      default:			/* Something weird.  Return error. */
-	return -1;
-      }
-      if (after)		/* Stop after r/w access is completed. */
-	pflags |= AFTER_WATCHFLAG;
-    }
-
-  if (!proc_set_watchpoint (pi, addr, len, pflags))
-    {
-      if (errno == E2BIG)	/* Typical error for no resources */
-	return -1;		/* fail */
-      /* GDB may try to remove the same watchpoint twice.
-	 If a remove request returns no match, don't error.  */
-      if (errno == ESRCH && len == 0)
-	return 0;		/* ignore */
-      proc_error (pi, "set_watchpoint", __LINE__);
-    }
-#endif /* AIX5 */
-#endif /* UNIXWARE */
-  return 0;
-}
-
-/*
- * Function: stopped_by_watchpoint
- *
- * Returns non-zero if process is stopped on a hardware watchpoint fault,
- * else returns zero.
- */
-
-int
-procfs_stopped_by_watchpoint (ptid_t ptid)
-{
-  procinfo *pi;
-
-  pi = find_procinfo_or_die (PIDGET (ptid) == -1 ? 
-			     PIDGET (inferior_ptid) : PIDGET (ptid), 0);
-
-  if (!pi)	/* If no process, then not stopped by watchpoint!  */
-    return 0;
-
-  if (proc_flags (pi) & (PR_STOPPED | PR_ISTOP))
-    {
-      if (proc_why (pi) == PR_FAULTED)
-	{	
-#ifdef FLTWATCH
-	  if (proc_what (pi) == FLTWATCH)
-	    return 1;
-#endif
-#ifdef FLTKWATCH
-	  if (proc_what (pi) == FLTKWATCH)
-	    return 1;
-#endif
-	}
-    }
-  return 0;
-}
-
-#ifdef TM_I386SOL2_H
-/*
- * Function: procfs_find_LDT_entry 
- *
- * Input:
- *   ptid_t ptid;	// The GDB-style pid-plus-LWP.
- *
- * Return:
- *   pointer to the corresponding LDT entry.
- */
-
-struct ssd *
-procfs_find_LDT_entry (ptid_t ptid)
-{
-  gdb_gregset_t *gregs;
-  int            key;
-  procinfo      *pi;
-
-  /* Find procinfo for the lwp. */
-  if ((pi = find_procinfo (PIDGET (ptid), TIDGET (ptid))) == NULL)
-    {
-      warning ("procfs_find_LDT_entry: could not find procinfo for %d:%d.",
-	       PIDGET (ptid), TIDGET (ptid));
-      return NULL;
-    }
-  /* get its general registers. */
-  if ((gregs = proc_get_gregs (pi)) == NULL)
-    {
-      warning ("procfs_find_LDT_entry: could not read gregs for %d:%d.",
-	       PIDGET (ptid), TIDGET (ptid));
-      return NULL;
-    }
-  /* Now extract the GS register's lower 16 bits. */
-  key = (*gregs)[GS] & 0xffff;
-
-  /* Find the matching entry and return it. */
-  return proc_get_LDT_entry (pi, key);
-}
-#endif /* TM_I386SOL2_H */
-
-/*
- * Memory Mappings Functions:
- */
-
-/* 
- * Function: iterate_over_mappings
- *
- * Call a callback function once for each mapping, passing it the mapping,
- * an optional secondary callback function, and some optional opaque data.
- * Quit and return the first non-zero value returned from the callback.
- *
- * Arguments:
- *   pi   -- procinfo struct for the process to be mapped.
- *   func -- callback function to be called by this iterator.
- *   data -- optional opaque data to be passed to the callback function.
- *   child_func -- optional secondary function pointer to be passed
- *                 to the child function.
- *
- * Return: First non-zero return value from the callback function, 
- *         or zero.
- */
-
-static int
-iterate_over_mappings (procinfo *pi, int (*child_func) (), void *data, 
-		       int (*func) (struct prmap *map, 
-				    int (*child_func) (), 
-				    void *data))
-{
-  char pathname[MAX_PROC_NAME_SIZE];
-  struct prmap *prmaps;
-  struct prmap *prmap;
-  int funcstat;
-  int map_fd;
-  int nmap;
-#ifdef NEW_PROC_API
-  struct stat sbuf;
-#endif
-
-  /* Get the number of mappings, allocate space, 
-     and read the mappings into prmaps.  */
-#ifdef NEW_PROC_API
-  /* Open map fd. */
-  sprintf (pathname, "/proc/%d/map", pi->pid);
-  if ((map_fd = open (pathname, O_RDONLY)) < 0)
-    proc_error (pi, "iterate_over_mappings (open)", __LINE__);
-
-  /* Make sure it gets closed again. */
-  make_cleanup_close (map_fd);
-
-  /* Use stat to determine the file size, and compute 
-     the number of prmap_t objects it contains.  */
-  if (fstat (map_fd, &sbuf) != 0)
-    proc_error (pi, "iterate_over_mappings (fstat)", __LINE__);
-
-  nmap = sbuf.st_size / sizeof (prmap_t);
-  prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps));
-  if (read (map_fd, (char *) prmaps, nmap * sizeof (*prmaps))
-      != (nmap * sizeof (*prmaps)))
-    proc_error (pi, "iterate_over_mappings (read)", __LINE__);
-#else
-  /* Use ioctl command PIOCNMAP to get number of mappings.  */
-  if (ioctl (pi->ctl_fd, PIOCNMAP, &nmap) != 0)
-    proc_error (pi, "iterate_over_mappings (PIOCNMAP)", __LINE__);
-
-  prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps));
-  if (ioctl (pi->ctl_fd, PIOCMAP, prmaps) != 0)
-    proc_error (pi, "iterate_over_mappings (PIOCMAP)", __LINE__);
-#endif
-
-  for (prmap = prmaps; nmap > 0; prmap++, nmap--)
-    if ((funcstat = (*func) (prmap, child_func, data)) != 0)
-      return funcstat;
-
-  return 0;
-}
-
-/*
- * Function: solib_mappings_callback
- *
- * Calls the supplied callback function once for each mapped address 
- * space in the process.  The callback function  receives an open 
- * file descriptor for the file corresponding to that mapped 
- * address space (if there is one), and the base address of the 
- * mapped space.  Quit when the callback function returns a
- * nonzero value, or at teh end of the mappings.
- *
- * Returns: the first non-zero return value of the callback function,
- * or zero.
- */
-
-int solib_mappings_callback (struct prmap *map, 
-			     int (*func) (int, CORE_ADDR),
-			     void *data)
-{
-  procinfo *pi = data;
-  int fd;
-
-#ifdef NEW_PROC_API
-  char name[MAX_PROC_NAME_SIZE + sizeof (map->pr_mapname)];
-
-  if (map->pr_vaddr == 0 && map->pr_size == 0)
-    return -1;		/* sanity */
-
-  if (map->pr_mapname[0] == 0)
-    {
-      fd = -1;	/* no map file */
-    }
-  else
-    {
-      sprintf (name, "/proc/%d/object/%s", pi->pid, map->pr_mapname);
-      /* Note: caller's responsibility to close this fd!  */
-      fd = open_with_retry (name, O_RDONLY);
-      /* Note: we don't test the above call for failure;
-	 we just pass the FD on as given.  Sometimes there is 
-	 no file, so the open may return failure, but that's
-	 not a problem.  */
-    }
-#else
-  fd = ioctl (pi->ctl_fd, PIOCOPENM, &map->pr_vaddr);
-  /* Note: we don't test the above call for failure;
-     we just pass the FD on as given.  Sometimes there is 
-     no file, so the ioctl may return failure, but that's
-     not a problem.  */
-#endif
-  return (*func) (fd, (CORE_ADDR) map->pr_vaddr);
-}
-
-/*
- * Function: proc_iterate_over_mappings
- *
- * Uses the unified "iterate_over_mappings" function
- * to implement the exported interface to solib-svr4.c.
- *
- * Given a pointer to a function, call that function once for every
- * mapped address space in the process.  The callback function 
- * receives an open file descriptor for the file corresponding to
- * that mapped address space (if there is one), and the base address
- * of the mapped space.  Quit when the callback function returns a
- * nonzero value, or at teh end of the mappings.
- *
- * Returns: the first non-zero return value of the callback function,
- * or zero.
- */
-
-int
-proc_iterate_over_mappings (int (*func) (int, CORE_ADDR))
-{
-  procinfo *pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
-
-  return iterate_over_mappings (pi, func, pi, solib_mappings_callback);
-}
-
-/*
- * Function: find_memory_regions_callback
- *
- * Implements the to_find_memory_regions method.
- * Calls an external function for each memory region.
- * External function will have the signiture:
- *
- *   int callback (CORE_ADDR vaddr, 
- *                 unsigned long size, 
- *                 int read, int write, int execute, 
- *                 void *data);
- *
- * Returns the integer value returned by the callback.
- */
-
-static int
-find_memory_regions_callback (struct prmap *map, 
-			      int (*func) (CORE_ADDR, 
-					   unsigned long, 
-					   int, int, int, 
-					   void *),
-			      void *data)
-{
-  return (*func) ((CORE_ADDR) map->pr_vaddr,
-		  map->pr_size, 
-		  (map->pr_mflags & MA_READ) != 0,
-		  (map->pr_mflags & MA_WRITE) != 0,
-		  (map->pr_mflags & MA_EXEC) != 0, 
-		  data);
-}
-
-/*
- * Function: proc_find_memory_regions
- *
- * External interface.  Calls a callback function once for each
- * mapped memory region in the child process, passing as arguments
- *	CORE_ADDR virtual_address,
- *	unsigned long size, 
- *	int read, 	TRUE if region is readable by the child
- *	int write, 	TRUE if region is writable by the child
- *	int execute	TRUE if region is executable by the child.
- * 
- * Stops iterating and returns the first non-zero value
- * returned by the callback.
- */
-
-static int
-proc_find_memory_regions (int (*func) (CORE_ADDR, 
-				       unsigned long, 
-				       int, int, int, 
-				       void *), 
-			  void *data)
-{
-  procinfo *pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
-
-  return iterate_over_mappings (pi, func, data, 
-				find_memory_regions_callback);
-}
-
-/*
- * Function: mappingflags
- *
- * Returns an ascii representation of a memory mapping's flags.
- */
-
-static char *
-mappingflags (flags)
-     long flags;
-{
-  static char asciiflags[8];
-
-  strcpy (asciiflags, "-------");
-#if defined (MA_PHYS)
-  if (flags & MA_PHYS)
-    asciiflags[0] = 'd';
-#endif
-  if (flags & MA_STACK)
-    asciiflags[1] = 's';
-  if (flags & MA_BREAK)
-    asciiflags[2] = 'b';
-  if (flags & MA_SHARED)
-    asciiflags[3] = 's';
-  if (flags & MA_READ)
-    asciiflags[4] = 'r';
-  if (flags & MA_WRITE)
-    asciiflags[5] = 'w';
-  if (flags & MA_EXEC)
-    asciiflags[6] = 'x';
-  return (asciiflags);
-}
-
-/*
- * Function: info_mappings_callback
- *
- * Callback function, does the actual work for 'info proc mappings'.
- */
-
-/* ARGSUSED */
-static int
-info_mappings_callback (struct prmap *map, int (*ignore) (), void *unused)
-{
-  char *data_fmt_string;
-
-  if (TARGET_ADDR_BIT == 32)
-    data_fmt_string   = "\t%#10lx %#10lx %#10x %#10x %7s\n";
-  else
-    data_fmt_string   = "  %#18lx %#18lx %#10x %#10x %7s\n";
-
-  printf_filtered (data_fmt_string, 
-		   (unsigned long) map->pr_vaddr,
-		   (unsigned long) map->pr_vaddr + map->pr_size - 1,
-		   map->pr_size,
-#ifdef PCAGENT	/* Horrible hack: only defined on Solaris 2.6+ */
-		   (unsigned int) map->pr_offset, 
-#else
-		   map->pr_off,
-#endif
-		   mappingflags (map->pr_mflags));
-
-  return 0;
-}
-
-/*
- * Function: info_proc_mappings
- *
- * Implement the "info proc mappings" subcommand.
- */
-
-static void
-info_proc_mappings (procinfo *pi, int summary)
-{
-  char *header_fmt_string;
-
-  if (TARGET_PTR_BIT == 32)
-    header_fmt_string = "\t%10s %10s %10s %10s %7s\n";
-  else
-    header_fmt_string = "  %18s %18s %10s %10s %7s\n";
-
-  if (summary)
-    return;	/* No output for summary mode. */
-
-  printf_filtered ("Mapped address spaces:\n\n");
-  printf_filtered (header_fmt_string, 
-		   "Start Addr",
-		   "  End Addr",
-		   "      Size",
-		   "    Offset",
-		   "Flags");
-
-  iterate_over_mappings (pi, NULL, NULL, info_mappings_callback);
-  printf_filtered ("\n");
-}
-
-/*
- * Function: info_proc_cmd
- *
- * Implement the "info proc" command.
- */
-
-static void
-info_proc_cmd (char *args, int from_tty)
-{
-  struct cleanup *old_chain;
-  procinfo *process  = NULL;
-  procinfo *thread   = NULL;
-  char    **argv     = NULL;
-  char     *tmp      = NULL;
-  int       pid      = 0;
-  int       tid      = 0;
-  int       mappings = 0;
-
-  old_chain = make_cleanup (null_cleanup, 0);
-  if (args)
-    {
-      if ((argv = buildargv (args)) == NULL)
-	nomem (0);
-      else
-	make_cleanup_freeargv (argv);
-    }
-  while (argv != NULL && *argv != NULL)
-    {
-      if (isdigit (argv[0][0]))
-	{
-	  pid = strtoul (argv[0], &tmp, 10);
-	  if (*tmp == '/')
-	    tid = strtoul (++tmp, NULL, 10);
-	}
-      else if (argv[0][0] == '/')
-	{
-	  tid = strtoul (argv[0] + 1, NULL, 10);
-	}
-      else if (strncmp (argv[0], "mappings", strlen (argv[0])) == 0)
-	{
-	  mappings = 1;
-	}
-      else
-	{
-	  /* [...] */
-	}
-      argv++;
-    }
-  if (pid == 0)
-    pid = PIDGET (inferior_ptid);
-  if (pid == 0)
-    error ("No current process: you must name one.");
-  else
-    {
-      /* Have pid, will travel.
-	 First see if it's a process we're already debugging. */
-      process = find_procinfo (pid, 0);
-       if (process == NULL)
-	 {
-	   /* No.  So open a procinfo for it, but 
-	      remember to close it again when finished.  */
-	   process = create_procinfo (pid, 0);
-	   make_cleanup (do_destroy_procinfo_cleanup, process);
-	   if (!open_procinfo_files (process, FD_CTL))
-	     proc_error (process, "info proc, open_procinfo_files", __LINE__);
-	 }
-    }
-  if (tid != 0)
-    thread = create_procinfo (pid, tid);
-
-  if (process)
-    {
-      printf_filtered ("process %d flags:\n", process->pid);
-      proc_prettyprint_flags (proc_flags (process), 1);
-      if (proc_flags (process) & (PR_STOPPED | PR_ISTOP))
-	proc_prettyprint_why (proc_why (process), proc_what (process), 1);
-      if (proc_get_nthreads (process) > 1)
-	printf_filtered ("Process has %d threads.\n", 
-			 proc_get_nthreads (process));
-    }
-  if (thread)
-    {
-      printf_filtered ("thread %d flags:\n", thread->tid);
-      proc_prettyprint_flags (proc_flags (thread), 1);
-      if (proc_flags (thread) & (PR_STOPPED | PR_ISTOP))
-	proc_prettyprint_why (proc_why (thread), proc_what (thread), 1);
-    }
-
-  if (mappings)
-    {
-      info_proc_mappings (process, 0);
-    }
-
-  do_cleanups (old_chain);
-}
-
-static void
-proc_trace_syscalls (char *args, int from_tty, int entry_or_exit, int mode)
-{
-  procinfo *pi;
-  sysset_t *sysset;
-  int       syscallnum = 0;
-
-  if (PIDGET (inferior_ptid) <= 0)
-    error ("you must be debugging a process to use this command.");
-
-  if (args == NULL || args[0] == 0)
-    error_no_arg ("system call to trace");
-
-  pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
-  if (isdigit (args[0]))
-    {
-      syscallnum = atoi (args);
-      if (entry_or_exit == PR_SYSENTRY)
-	sysset = proc_get_traced_sysentry (pi, NULL);
-      else
-	sysset = proc_get_traced_sysexit (pi, NULL);
-
-      if (sysset == NULL)
-	proc_error (pi, "proc-trace, get_traced_sysset", __LINE__);
-
-      if (mode == FLAG_SET)
-	gdb_praddsysset (sysset, syscallnum);
-      else
-	gdb_prdelsysset (sysset, syscallnum);
-
-      if (entry_or_exit == PR_SYSENTRY)
-	{
-	  if (!proc_set_traced_sysentry (pi, sysset))
-	    proc_error (pi, "proc-trace, set_traced_sysentry", __LINE__);
-	}
-      else
-	{
-	  if (!proc_set_traced_sysexit (pi, sysset))
-	    proc_error (pi, "proc-trace, set_traced_sysexit", __LINE__);
-	}
-    }
-}
-
-static void 
-proc_trace_sysentry_cmd (char *args, int from_tty)
-{
-  proc_trace_syscalls (args, from_tty, PR_SYSENTRY, FLAG_SET);
-}
-
-static void 
-proc_trace_sysexit_cmd (char *args, int from_tty)
-{
-  proc_trace_syscalls (args, from_tty, PR_SYSEXIT, FLAG_SET);
-}
-
-static void 
-proc_untrace_sysentry_cmd (char *args, int from_tty)
-{
-  proc_trace_syscalls (args, from_tty, PR_SYSENTRY, FLAG_RESET);
-}
-
-static void 
-proc_untrace_sysexit_cmd (char *args, int from_tty)
-{
-  proc_trace_syscalls (args, from_tty, PR_SYSEXIT, FLAG_RESET);
-}
-
-
-void
-_initialize_procfs (void)
-{
-  init_procfs_ops ();
-  add_target (&procfs_ops);
-  add_info ("proc", info_proc_cmd, 
-	    "Show /proc process information about any running process.\n\
-Specify process id, or use the program being debugged by default.\n\
-Specify keyword 'mappings' for detailed info on memory mappings.");
-  add_com ("proc-trace-entry", no_class, proc_trace_sysentry_cmd, 
-	   "Give a trace of entries into the syscall.");
-  add_com ("proc-trace-exit", no_class, proc_trace_sysexit_cmd, 
-	   "Give a trace of exits from the syscall.");
-  add_com ("proc-untrace-entry", no_class, proc_untrace_sysentry_cmd, 
-	   "Cancel a trace of entries into the syscall.");
-  add_com ("proc-untrace-exit", no_class, proc_untrace_sysexit_cmd, 
-	   "Cancel a trace of exits from the syscall.");
-}
-
-/* =================== END, GDB  "MODULE" =================== */
-
-
-
-/* miscellaneous stubs:                                             */
-/* The following satisfy a few random symbols mostly created by    */
-/* the solaris threads implementation, which I will chase down     */
-/* later.        */
-
-/*
- * Return a pid for which we guarantee
- * we will be able to find a 'live' procinfo.
- */
-
-ptid_t
-procfs_first_available (void)
-{
-  return pid_to_ptid (procinfo_list ? procinfo_list->pid : -1);
-}
-
-/* ===================  GCORE .NOTE "MODULE" =================== */
-#if defined (UNIXWARE) || defined (PIOCOPENLWP) || defined (PCAGENT)
-/* gcore only implemented on solaris and unixware (so far) */
-
-static char *
-procfs_do_thread_registers (bfd *obfd, ptid_t ptid, 
-			    char *note_data, int *note_size)
-{
-  gdb_gregset_t gregs;
-  gdb_fpregset_t fpregs;
-  unsigned long merged_pid;
-
-  merged_pid = TIDGET (ptid) << 16 | PIDGET (ptid);
-
-  fill_gregset (&gregs, -1);
-#if defined (UNIXWARE)
-  note_data = (char *) elfcore_write_lwpstatus (obfd,
-						note_data,
-						note_size,
-						merged_pid, 
-						stop_signal,
-						&gregs);
-#else
-  note_data = (char *) elfcore_write_prstatus (obfd,
-					       note_data,
-					       note_size,
-					       merged_pid, 
-					       stop_signal,
-					       &gregs);
-#endif
-  fill_fpregset (&fpregs, -1);
-  note_data = (char *) elfcore_write_prfpreg (obfd,
-					      note_data,
-					      note_size,
-					      &fpregs,
-					      sizeof (fpregs));
-  return note_data;
-}
-
-struct procfs_corefile_thread_data {
-  bfd *obfd;
-  char *note_data;
-  int *note_size;
-};
-
-static int
-procfs_corefile_thread_callback (procinfo *pi, procinfo *thread, void *data)
-{
-  struct procfs_corefile_thread_data *args = data;
-
-  if (pi != NULL && thread->tid != 0)
-    {
-      ptid_t saved_ptid = inferior_ptid;
-      inferior_ptid = MERGEPID (pi->pid, thread->tid);
-      args->note_data = procfs_do_thread_registers (args->obfd, inferior_ptid, 
-						    args->note_data, 
-						    args->note_size);
-      inferior_ptid = saved_ptid;
-    }
-  return 0;
-}
-
-static char *
-procfs_make_note_section (bfd *obfd, int *note_size)
-{
-  struct cleanup *old_chain;
-  gdb_gregset_t gregs;
-  gdb_fpregset_t fpregs;
-  char fname[16] = {'\0'};
-  char psargs[80] = {'\0'};
-  procinfo *pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
-  char *note_data = NULL;
-  char *inf_args;
-  struct procfs_corefile_thread_data thread_args;
-
-  if (get_exec_file (0))
-    {
-      strncpy (fname, strrchr (get_exec_file (0), '/') + 1, sizeof (fname));
-      strncpy (psargs, get_exec_file (0), 
-	       sizeof (psargs));
-
-      inf_args = get_inferior_args ();
-      if (inf_args && *inf_args &&
-	  strlen (inf_args) < ((int) sizeof (psargs) - (int) strlen (psargs)))
-	{
-	  strncat (psargs, " ", 
-		   sizeof (psargs) - strlen (psargs));
-	  strncat (psargs, inf_args, 
-		   sizeof (psargs) - strlen (psargs));
-	}
-    }
-
-  note_data = (char *) elfcore_write_prpsinfo (obfd, 
-					       note_data, 
-					       note_size, 
-					       fname, 
-					       psargs);
-
-#ifdef UNIXWARE
-  fill_gregset (&gregs, -1);
-  note_data = elfcore_write_pstatus (obfd, note_data, note_size, 
-				     PIDGET (inferior_ptid), 
-				     stop_signal, &gregs);
-#endif
-
-  thread_args.obfd = obfd;
-  thread_args.note_data = note_data;
-  thread_args.note_size = note_size;
-  proc_iterate_over_threads (pi, procfs_corefile_thread_callback, &thread_args);
-
-  if (thread_args.note_data == note_data)
-    {
-      /* iterate_over_threads didn't come up with any threads;
-	 just use inferior_ptid. */
-      note_data = procfs_do_thread_registers (obfd, inferior_ptid, 
-					      note_data, note_size);
-    }
-  else
-    {
-      note_data = thread_args.note_data;
-    }
-
-  make_cleanup (xfree, note_data);
-  return note_data;
-}
-#else /* !(Solaris or Unixware) */
-static char *
-procfs_make_note_section (bfd *obfd, int *note_size)
-{
-  error ("gcore not implemented for this host.");
-  return NULL;	/* lint */
-}
-#endif /* Solaris or Unixware */
-/* ===================  END GCORE .NOTE "MODULE" =================== */