First cut at supporting simulators in gdbserver:

	* configure, configure.in: Allow gdbserver to be configured
	for cross-target environments.
	* gdbserver/Makefile.in: Add simulator support.
	* gdbserver/configure.in: Eliminate assumption that host == target.
	Simplify using gdb/configure.tgt and gdb/configure.host.
	Fix other minor configuration errors.
	* gdbserver/low-sparc.c: Fix compile error.
	* gdbserver/remote-utils.c: Eliminate assumption that registers
	and addresses are four bytes.  Fix minor compile errors and warnings.
	* gdbserver/server.c: Rewrite numerous instances of identical code
	for starting inferior processes to call new function start_inferior.
	Eliminate assumption that registers and addresses are four bytes.
	* gdbserver/server.h: Add missing prototypes to eliminate compiler
	warnings.
	* gdbserver/low-sim.c: New file to mate gdbserver with simulators.
	* config/mips/vr5000.mt: Add Vr5000 simulator support to gdbserver.
	* config/i386/linux.mh: Eliminate gdbserver support as a first step
	in moving such support from host to target makefile fragments.
	* config/i386/linux.mt: Move gdbserver support here from linux.mh.

1 files changed, 5 insertions, 241 deletions

diff --git a/gdb/gdbserver/configure.in b/gdb/gdbserver/configure.in
index 2a8ce15..1bbb73c 100644
--- a/gdb/gdbserver/configure.in
+++ b/gdb/gdbserver/configure.in
@@ -4,116 +4,9 @@ gdb_serial_driver=../ser-unix.c
 
 # per-host:
 
-# per-target:
-
-# Hack alert!  We want this directory to be configured only for the target,
-# which is where it will be running, so we just eliminate the per-host section,
-# and make the per-target stuff setup host & host_cpu according to the target.
-
-host_cpu=$target_cpu
-host=$target
-
-# Map host cpu into the config cpu subdirectory name.
-# The default is $host_cpu.
-
-case "${host_cpu}" in
-
-c[12])			gdb_host_cpu=convex ;;
-hppa*)			gdb_host_cpu=pa ;;
-i[3456]86)		gdb_host_cpu=i386 ;;
-m68*)			gdb_host_cpu=m68k ;;
-np1)			gdb_host_cpu=gould ;;
-pyramid)		gdb_host_cpu=pyr ;;
-*)			gdb_host_cpu=$target_cpu ;;
-
-esac
-
-# map host info into gdb names.
-
-case "${host}" in
-
-a29k-*-*)		gdb_host=ultra3 ;;
-
-arm-*-*)		gdb_host=arm ;;
-
-c[12]-*-*)		gdb_host=convex ;;
-
-hppa*-hp-bsd*)		gdb_host=hppabsd ;;
-hppa*-hp-hpux*)		gdb_host=hppahpux ;;
-
-i[3456]86-ncr-*)	gdb_host=ncr3000 ;;
-i[3456]86-sequent-*)	gdb_host=symmetry ;;
-
-i[3456]86-*-bsd*)	gdb_host=i386bsd ;;
-i[3456]86-*-lynxos*)	gdb_host=i386lynx ;;
-i[3456]86-*-go32)	gdb_host=go32
-			gdb_serial_driver=ser-go32.c
-			;;
-i[3456]86-*-linux*)	gdb_host=linux ;;
-i[3456]86-pc-linux-gnu)	gdb_host=linux ;;
-i[3456]86-*-mach)	gdb_host=i386mach ;;
-i[3456]86-*-sco3.2v4*)	gdb_host=i386sco4 ;;
-i[3456]86-*-sco*)	gdb_host=i386sco ;;
-i[3456]86-*-solaris*)	gdb_host=i386sol2 ;;
-i[3456]86-*-sunos*)	gdb_host=sun386 ;;
-i[3456]86-*-sysv3.2)	gdb_host=i386v32 ;;
-i[3456]86-*-sysv4*)	gdb_host=i386v4 ;;
-i[3456]86-*-sysv*)	gdb_host=i386v ;;
+. ${srcdir}/../configure.host
 
-m680[01]0-sun-sunos3*)	gdb_host=sun2os3 ;;
-m680[01]0-sun-sunos4*)	gdb_host=sun2os4 ;;
-m68030-sony-*)		gdb_host=news1000 ;;
-
-m68*-altos-*)		gdb_host=altos ;;
-m68*-apollo*-sysv*)	gdb_host=apollo68v ;;
-m68*-apollo*-bsd*)	gdb_host=apollo68b ;;
-m68*-att-*)		gdb_host=3b1 ;;
-m68*-cbm-sysv4*)	gdb_host=amix ;;
-m68*-hp-bsd*)		gdb_host=hp300bsd ;;
-m68*-hp-hpux*)		gdb_host=hp300hpux ;;
-m68*-isi-*)		gdb_host=isi ;;
-m68*-*-lynxos*)		gdb_host=m68klynx ;;
-m68*-sony-*)		gdb_host=news ;;
-m68*-sun-sunos3*)	gdb_host=sun3os3 ;;
-m68*-sun-sunos4*)	gdb_host=sun3os4 ;;
-m68*-sun-*)		gdb_host=sun3os4 ;;
-
-m88k-motorola-*)	gdb_host=delta88 ;;
-m88k-*-*)		gdb_host=m88k ;;
-
-mips-dec-*)		gdb_host=decstation ;;
-mips-little-*)		gdb_host=littlemips ;;
-mips-sgi-irix3)		gdb_host=irix3 ;;
-mips-sgi-irix4*)	gdb_host=irix4 ;;
-mips-sony-*)		gdb_host=bigmips ;;
-
-none-*-*)		gdb_host=none ;;
-
-np1-*-*)		gdb_host=np1 ;;
-
-ns32k-umax-*)		gdb_host=umax ;;
-ns32k-utek-sysv)	gdb_host=merlin ;;
-
-pn-*-*)			gdb_host=pn ;;
-
-pyramid-*-*)		gdb_host=pyramid ;;
-
-romp-*-*)		gdb_host=rtbsd ;;
-
-rs6000-*-*)		gdb_host=rs6000 ;;
-
-sparc-*-lynxos*)	gdb_host=sparclynx ;;
-sparc-*-solaris2*)	gdb_host=sun4sol2 ;;
-sparc-*-sunos4*)	gdb_host=sun4os4 ;;
-sparc-*-*)		gdb_host=sun4os4 ;;
-
-tahoe-*-*)		gdb_host=tahoe ;;
-
-vax-*-bsd*)		gdb_host=vaxbsd ;;
-vax-*-ultrix2*)		gdb_host=vaxult2 ;;
-vax-*-ultrix*)		gdb_host=vaxult ;;
-
-esac
+echo "gdbserver/configure.in: host is $host, target is $target"
 
 if [ ! -f ${srcdir}/../config/${gdb_host_cpu}/${gdb_host}.mh ]; then
 	echo '***' "GDB remote does not support host ${host}" 1>&2
@@ -125,138 +18,9 @@ hostfile=`awk '$1 == "XM_FILE=" { print $2 }' <${srcdir}/../config/${gdb_host_cp
 
 # per-target:
 
-# Map target cpu into the config cpu subdirectory name.
-# The default is $target_cpu.
-
-case "${target_cpu}" in
-
-c[12])			gdb_target_cpu=convex ;;
-hppa*)			gdb_target_cpu=pa ;;
-i[3456]86)		gdb_target_cpu=i386 ;;
-m68*)			gdb_target_cpu=m68k ;;
-np1)			gdb_target_cpu=gould ;;
-pn)			gdb_target_cpu=gould ;;
-pyramid)		gdb_target_cpu=pyr ;;
-sparc*)			gdb_target_cpu=sparc ;;
-*)			gdb_target_cpu=$target_cpu ;;
-
-esac
-
-# map target info into gdb names.
-
-case "${target}" in
-
-a29k-*-aout)		gdb_target=a29k ;;
-a29k-*-coff)		gdb_target=a29k ;;
-a29k-*-elf)		gdb_target=a29k ;;
-a29k-*-ebmon)		gdb_target=a29k ;;
-a29k-*-kern)		gdb_target=a29k-kern ;;
-a29k-*-none)		gdb_target=a29k ;;
-a29k-*-sym1)		gdb_target=ultra3 ;;
-a29k-*-udi)		gdb_target=a29k-udi ;;
-
-arm-*-*)		gdb_target=arm ;;
-
-c1-*-*)			gdb_target=convex ;;
-c2-*-*)			gdb_target=convex ;;
-
-h8300-*-*)		gdb_target=h8300hms ;;
-h8500-*-*)		gdb_target=h8500hms ;;
-
-sh-*-*)			gdb_target=sh ;;
-
-hppa*-*-bsd*)		gdb_target=hppabsd ;;
-hppa*-*-hpux*)		gdb_target=hppahpux ;;
-
-i[3456]86-sequent-*)	gdb_target=symmetry ;;
-i[3456]86-ncr-*)	gdb_target=ncr3000 ;;
-
-i[3456]86-*-aout)	gdb_target=i386aout ;;
-i[3456]86-*-coff)	gdb_target=i386v ;;
-i[3456]86-*-elf)	gdb_target=i386v ;;
-
-i[3456]86-*-bsd*)	gdb_target=i386bsd ;;
-i[3456]86-*-lynxos*)	gdb_target=i386lynx ;;
-i[3456]86-*-go32)	gdb_target=i386aout ;;
-i[3456]86-*-solaris*)	gdb_target=i386sol2 ;;
-i[3456]86-*-sunos*)	gdb_target=sun386 ;;
-i[3456]86-*-sysv4*)	gdb_target=i386v4 ;;
-i[3456]86-*-sco*)	gdb_target=i386v ;;
-i[3456]86-*-sysv*)	gdb_target=i386v ;;
-i[3456]86-*-linux*)	gdb_target=linux ;;
-
-i960-*-bout)		gdb_target=vxworks960 ;;
-i960-*-coff)		gdb_target=nindy960 ;;
-i960-*-elf)		gdb_target=nindy960 ;;
-
-i960-*-nindy)		gdb_target=nindy960 ;;
-i960-*-vxworks)		gdb_target=vxworks960 ;;
-
-m68000-*-aout)		gdb_target=m68k-nofp ;;
-m68000-*-coff)		gdb_target=m68k-nofp ;;
-m68000-*-elf)		gdb_target=m68k-nofp ;;
-m68000-*-sunos3*)	gdb_target=sun2os3 ;;
-m68000-*-sunos4*)	gdb_target=sun2os4 ;;
-
-m68*-cbm-sysv4*)	gdb_target=amix ;;
-m68*-hp-bsd*)		gdb_target=hp300bsd ;;
-m68*-hp-hpux*)		gdb_target=hp300hpux ;;
-
-m68*-altos-*)		gdb_target=altos ;;
-m68*-att-*)		gdb_target=3b1 ;;
-m68*-ericsson-*)	gdb_target=es1800 ;;
-m68*-isi-*)		gdb_target=isi ;;
-m68*-netx-*)		gdb_target=vxworks68 ;;
-m68*-sony-*)		gdb_target=news ;;
-m68*-tandem-*)		gdb_target=st2000 ;;
-
-m68*-*-aout)		gdb_target=m68k-fp ;;
-m68*-*-coff)		gdb_target=m68k-fp ;;
-m68*-*-elf)		gdb_target=m68k-fp ;;
-m68*-*-lynxos*)		gdb_target=m68klynx ;;
-m68*-*-os68k)		gdb_target=os68k ;;
-m68*-*-sunos3*)		gdb_target=sun3os3 ;;
-m68*-*-sunos4*)		gdb_target=sun3os4 ;;
-m68*-*-vxworks*)	gdb_target=vxworks68 ;;
-
-m88k-motorola-*)	gdb_target=delta88 ;;
-m88k-*-*)		gdb_target=m88k ;;
-
-mips-big-*)		gdb_target=bigmips ;;
-mips-dec-*)		gdb_target=decstation ;;
-mips-idt-ecoff)		gdb_target=idt ;;
-mips-little-*)		gdb_target=littlemips ;;
-mips-sgi-*)		gdb_target=irix3 ;;
-mips-sony-*)		gdb_target=bigmips ;;
-
-none-*-*)		gdb_target=none ;;
-
-np1-*-*)		gdb_target=np1 ;;
-
-ns32k-utek-sysv)	gdb_target=merlin ;;
-ns32k-utek-*)		gdb_target=umax ;;
-
-pn-*-*)			gdb_target=pn ;;
-
-pyramid-*-*)		gdb_target=pyramid ;;
-
-rs6000-*-*)		gdb_target=rs6000 ;;
-
-sparc-*-aout)		gdb_target=sparc-em ;;
-sparc-*-coff)		gdb_target=sparc-em ;;
-sparc-*-elf)		gdb_target=sparc-em ;;
-sparc-*-lynxos*)	gdb_target=sparclynx ;;
-sparc-*-solaris2*)	gdb_target=sun4sol2 ;;
-sparc-*-sunos4*)	gdb_target=sun4os4 ;;
-sparc-*-vxworks*)	gdb_target=sparc-em ;;
-sparc-*-*)		gdb_target=sun4os4 ;;
-sparclite*-*-*)		gdb_target=sparclite ;;
-
-tahoe-*-*)		gdb_target=tahoe ;;
-vax-*-*)		gdb_target=vax ;;
+. ${srcdir}/../configure.tgt
 
-z8k-*-sim)		gdb_target=z8ksim ;;
-esac
+echo "gdbserver/configure.in: host_cpu is $host_cpu, target_cpu is $target_cpu"
 
 if [ ! -f ${srcdir}/../config/${gdb_target_cpu}/${gdb_target}.mt ]; then
 	echo '***' "GDB remote does not support target ${target}" 1>&2
@@ -319,7 +83,7 @@ if [ "${nativefile}" != "" ]; then
 # temporary scaffolding until all hosts have the host/target/native
 # split in place.
 else
-	files="${files} ../config/nm-trash.h"
+	files="${files} ../config/nm-empty.h"
 	links="${links} nm.h"
 fi