Move gdbserver to top level

This patch moves gdbserver to the top level.

This patch is as close to a pure move as possible -- gdbserver still
builds its own variant of gnulib and gdbsupport.  Changing this will
be done in a separate patch.

[v2] Note that, per Simon's review comment, this patch changes the
tree so that gdbserver is not built for or1k or score.  This makes
sense, because there is apparently not actually a gdbserver port here.

[v3] This version of the patch also splits out some configury into a
new file, gdbserver/configure.host, so that the top-level configure
script can simply rely on it in order to decide whether gdbserver
should be built.

[v4] This version adds documentation and removes some unnecessary
top-level dependencies.

[v5] Update docs to mention "make all-gdbserver" and change how
top-level configure decides whether to build gdbserver, switching to a
single, shared script.

Tested by the buildbot.

ChangeLog
2020-02-07  Tom Tromey  <tom@tromey.com>
	    Pedro Alves  <palves@redhat.com>

	* src-release.sh (GDB_SUPPORT_DIRS): Add gdbserver.
	* gdbserver: New directory, moved from gdb/gdbserver.
	* configure.ac (host_tools): Add gdbserver.
	Only build gdbserver on certain systems.
	* Makefile.in, configure: Rebuild.
	* Makefile.def (host_modules, dependencies): Add gdbserver.
	* MAINTAINERS: Add gdbserver.

gdb/ChangeLog
2020-02-07  Tom Tromey  <tom@tromey.com>

	* README: Update gdbserver documentation.
	* gdbserver: Move to top level.
	* configure.tgt (build_gdbserver): Remove.
	* configure.ac: Remove --enable-gdbserver.
	* configure: Rebuild.
	* Makefile.in (distclean): Don't mention gdbserver.

Change-Id: I826b7565b54604711dc7a11edea0499cd51ff39e

1 files changed, 406 insertions, 0 deletions

diff --git a/gdbserver/configure.srv b/gdbserver/configure.srv
new file mode 100644
index 0000000..2e83cbd
--- /dev/null
+++ b/gdbserver/configure.srv
@@ -0,0 +1,406 @@
+# Mappings from configuration triplets to gdbserver build options.
+# This is invoked from the autoconf-generated configure script, to
+# produce the appropriate Makefile substitutions.
+# It is also sourced by the top level configure script, to determine
+# whether gdbserver is supported on a given host.
+
+# This file sets the following shell variables:
+#   srv_regobj		The register protocol appropriate for this target.
+#   srv_tgtobj		Any other target-specific modules appropriate
+#			for this target.
+#   srv_hostio_err	The object implementing the hostio_last_error
+#			target method.
+#   srv_xmlfiles	All XML files which should be available for
+#			gdbserver in this configuration.
+#   ipa_obj		Any other target-specific modules appropriate
+#			for this target's in-process agent.
+#   UNSUPPORTED         Set to 1 if the host is unsupported.
+#
+# In addition, on GNU/Linux the following shell variables will be set:
+#   srv_linux_regsets	Set to "yes" if ptrace(PTRACE_GETREGS) and friends
+#			may be available on this platform;  unset otherwise.
+#			They will only be used if <sys/ptrace.h> defines
+#			PTRACE_GETREGS.
+#   srv_linux_usrregs	Set to "yes" if we can get at registers via
+#			PTRACE_PEEKUSR / PTRACE_POKEUSR.
+
+# Default hostio_last_error implementation
+srv_hostio_err_objs="hostio-errno.o"
+
+ipa_ppc_linux_regobj="powerpc-32l-ipa.o powerpc-altivec32l-ipa.o powerpc-vsx32l-ipa.o powerpc-isa205-32l-ipa.o powerpc-isa205-altivec32l-ipa.o powerpc-isa205-vsx32l-ipa.o powerpc-isa205-ppr-dscr-vsx32l-ipa.o powerpc-isa207-vsx32l-ipa.o powerpc-isa207-htm-vsx32l-ipa.o powerpc-e500l-ipa.o powerpc-64l-ipa.o powerpc-altivec64l-ipa.o powerpc-vsx64l-ipa.o powerpc-isa205-64l-ipa.o powerpc-isa205-altivec64l-ipa.o powerpc-isa205-vsx64l-ipa.o powerpc-isa205-ppr-dscr-vsx64l-ipa.o powerpc-isa207-vsx64l-ipa.o powerpc-isa207-htm-vsx64l-ipa.o"
+
+# Linux object files.  This is so we don't have to repeat
+# these files over and over again.
+srv_linux_obj="linux-low.o nat/linux-osdata.o nat/linux-procfs.o nat/linux-ptrace.o nat/linux-waitpid.o nat/linux-personality.o nat/linux-namespaces.o fork-child.o nat/fork-inferior.o"
+
+# Input is taken from the "${host}" variable.
+
+case "${host}" in
+  aarch64*-*-linux*)	srv_tgtobj="linux-aarch64-low.o"
+			srv_tgtobj="$srv_tgtobj nat/aarch64-linux-hw-point.o"
+			srv_tgtobj="$srv_tgtobj linux-aarch32-low.o"
+			srv_tgtobj="$srv_tgtobj linux-aarch32-tdesc.o"
+			srv_tgtobj="${srv_tgtobj} arch/aarch32.o"
+			srv_tgtobj="${srv_tgtobj} arch/arm.o"
+			srv_tgtobj="$srv_tgtobj nat/aarch64-linux.o"
+			srv_tgtobj="$srv_tgtobj arch/aarch64-insn.o"
+			srv_tgtobj="$srv_tgtobj arch/aarch64.o"
+			srv_tgtobj="$srv_tgtobj linux-aarch64-tdesc.o"
+			srv_tgtobj="$srv_tgtobj nat/aarch64-sve-linux-ptrace.o"
+			srv_tgtobj="${srv_tgtobj} $srv_linux_obj"
+			srv_linux_regsets=yes
+			srv_linux_thread_db=yes
+			ipa_obj="linux-aarch64-ipa.o"
+			ipa_obj="${ipa_obj} linux-aarch64-tdesc-ipa.o"
+			ipa_obj="${ipa_obj} arch/aarch64-ipa.o"
+			;;
+  arm*-*-linux*)	srv_tgtobj="$srv_linux_obj linux-arm-low.o"
+			srv_tgtobj="$srv_tgtobj linux-arm-tdesc.o"
+			srv_tgtobj="$srv_tgtobj linux-aarch32-low.o"
+			srv_tgtobj="$srv_tgtobj linux-aarch32-tdesc.o"
+			srv_tgtobj="${srv_tgtobj} arch/aarch32.o"
+			srv_tgtobj="${srv_tgtobj} arch/arm.o"
+			srv_tgtobj="${srv_tgtobj} arch/arm-linux.o"
+			srv_tgtobj="${srv_tgtobj} arch/arm-get-next-pcs.o"
+			srv_linux_usrregs=yes
+			srv_linux_regsets=yes
+			srv_linux_thread_db=yes
+			;;
+  arm*-*-mingw32ce*)	srv_regobj=reg-arm.o
+			srv_tgtobj="win32-low.o win32-arm-low.o"
+			srv_tgtobj="${srv_tgtobj} wincecompat.o"
+			# hostio_last_error implementation is in win32-low.c
+			srv_hostio_err_objs=""
+			srv_mingw=yes
+			srv_mingwce=yes
+			;;
+  bfin-*-*linux*)	srv_regobj=reg-bfin.o
+			srv_tgtobj="$srv_linux_obj linux-bfin-low.o"
+			srv_linux_usrregs=yes
+			srv_linux_thread_db=yes
+			;;
+  crisv32-*-linux*)	srv_regobj=reg-crisv32.o
+			srv_tgtobj="$srv_linux_obj linux-crisv32-low.o"
+			srv_linux_regsets=yes
+			srv_linux_thread_db=yes
+			;;
+  cris-*-linux*)	srv_regobj=reg-cris.o
+			srv_tgtobj="$srv_linux_obj linux-cris-low.o"
+			srv_linux_usrregs=yes
+			srv_linux_thread_db=yes
+			;;
+  i[34567]86-*-cygwin*)	srv_regobj=""
+			srv_tgtobj="x86-low.o nat/x86-dregs.o win32-low.o"
+			srv_tgtobj="${srv_tgtobj} win32-i386-low.o"
+			srv_tgtobj="${srv_tgtobj} arch/i386.o"
+			;;
+  i[34567]86-*-linux*)	srv_tgtobj="${srv_tgtobj} arch/i386.o"
+			srv_tgtobj="${srv_tgtobj} $srv_linux_obj"
+			srv_tgtobj="${srv_tgtobj} linux-x86-low.o x86-low.o"
+			srv_tgtobj="${srv_tgtobj} nat/x86-dregs.o i387-fp.o"
+			srv_tgtobj="${srv_tgtobj} linux-x86-tdesc.o"
+			srv_tgtobj="${srv_tgtobj} nat/linux-btrace.o"
+			srv_tgtobj="${srv_tgtobj} nat/x86-linux.o"
+			srv_tgtobj="${srv_tgtobj} nat/x86-linux-dregs.o"
+			srv_linux_usrregs=yes
+			srv_linux_regsets=yes
+			srv_linux_thread_db=yes
+			srv_linux_btrace=yes
+			ipa_obj="linux-i386-ipa.o linux-x86-tdesc-ipa.o"
+			ipa_obj="${ipa_obj} arch/i386-ipa.o"
+			;;
+  i[34567]86-*-lynxos*)	srv_regobj=""
+			srv_tgtobj="lynx-low.o lynx-i386-low.o fork-child.o"
+			srv_tgtobj="${srv_tgtobj} nat/fork-inferior.o"
+			srv_tgtobj="${srv_tgtobj} arch/i386.o"
+			srv_lynxos=yes
+			;;
+  i[34567]86-*-mingw32ce*)
+			srv_regobj=""
+			srv_tgtobj="x86-low.o nat/x86-dregs.o win32-low.o"
+			srv_tgtobj="${srv_tgtobj} win32-i386-low.o"
+			srv_tgtobj="${srv_tgtobj} arch/i386.o"
+			srv_tgtobj="${srv_tgtobj} wincecompat.o"
+			# hostio_last_error implementation is in win32-low.c
+			srv_hostio_err_objs=""
+			srv_mingw=yes
+			srv_mingwce=yes
+			;;
+  i[34567]86-*-mingw*)	srv_regobj=""
+			srv_tgtobj="x86-low.o nat/x86-dregs.o win32-low.o"
+			srv_tgtobj="${srv_tgtobj} win32-i386-low.o"
+			srv_tgtobj="${srv_tgtobj} arch/i386.o"
+			srv_mingw=yes
+			;;
+  i[34567]86-*-nto*)	srv_regobj=""
+			srv_tgtobj="nto-low.o nto-x86-low.o arch/i386.o"
+			srv_qnx="yes"
+			;;
+  ia64-*-linux*)	srv_regobj=reg-ia64.o
+			srv_tgtobj="$srv_linux_obj linux-ia64-low.o"
+			srv_linux_usrregs=yes
+			;;
+  m32r*-*-linux*)	srv_regobj=reg-m32r.o
+			srv_tgtobj="$srv_linux_obj linux-m32r-low.o"
+			srv_linux_usrregs=yes
+ 			srv_linux_thread_db=yes
+			;;
+  m68*-*-linux*)	if test "$gdb_cv_m68k_is_coldfire" = yes; then
+                          srv_regobj=reg-cf.o
+                        else
+                          srv_regobj=reg-m68k.o
+                        fi
+			srv_tgtobj="$srv_linux_obj linux-m68k-low.o"
+			srv_linux_usrregs=yes
+			srv_linux_regsets=yes
+			srv_linux_thread_db=yes
+			;;
+  m68*-*-uclinux*)	if test "$gdb_cv_m68k_is_coldfire" = yes; then
+                          srv_regobj=reg-cf.o
+                        else
+                          srv_regobj=reg-m68k.o
+                        fi
+			srv_tgtobj="$srv_linux_obj linux-m68k-low.o"
+			srv_linux_usrregs=yes
+			srv_linux_regsets=yes
+			srv_linux_thread_db=yes
+			;;
+  mips*-*-linux*)	srv_regobj="mips-linux.o"
+			srv_regobj="${srv_regobj} mips-dsp-linux.o"
+			srv_regobj="${srv_regobj} mips64-linux.o"
+			srv_regobj="${srv_regobj} mips64-dsp-linux.o"
+			srv_tgtobj="$srv_linux_obj linux-mips-low.o"
+			srv_tgtobj="${srv_tgtobj} nat/mips-linux-watch.o"
+			srv_xmlfiles="mips-linux.xml"
+			srv_xmlfiles="${srv_xmlfiles} mips-dsp-linux.xml"
+			srv_xmlfiles="${srv_xmlfiles} mips-cpu.xml"
+			srv_xmlfiles="${srv_xmlfiles} mips-cp0.xml"
+			srv_xmlfiles="${srv_xmlfiles} mips-fpu.xml"
+			srv_xmlfiles="${srv_xmlfiles} mips-dsp.xml"
+			srv_xmlfiles="${srv_xmlfiles} mips64-linux.xml"
+			srv_xmlfiles="${srv_xmlfiles} mips64-dsp-linux.xml"
+			srv_xmlfiles="${srv_xmlfiles} mips64-cpu.xml"
+			srv_xmlfiles="${srv_xmlfiles} mips64-cp0.xml"
+			srv_xmlfiles="${srv_xmlfiles} mips64-fpu.xml"
+			srv_xmlfiles="${srv_xmlfiles} mips64-dsp.xml"
+			srv_linux_regsets=yes
+			srv_linux_usrregs=yes
+			srv_linux_thread_db=yes
+			;;
+  nios2*-*-linux*)	srv_regobj="nios2-linux.o"
+			srv_tgtobj="$srv_linux_obj linux-nios2-low.o"
+			srv_xmlfiles="nios2-linux.xml"
+			srv_xmlfiles="${srv_xmlfiles} nios2-cpu.xml"
+			srv_linux_regsets=yes
+			srv_linux_usrregs=yes
+			srv_linux_thread_db=yes
+			;;
+  powerpc*-*-linux*)	srv_regobj="powerpc-32l.o"
+			srv_regobj="${srv_regobj} powerpc-altivec32l.o"
+			srv_regobj="${srv_regobj} powerpc-vsx32l.o"
+			srv_regobj="${srv_regobj} powerpc-isa205-32l.o"
+			srv_regobj="${srv_regobj} powerpc-isa205-altivec32l.o"
+			srv_regobj="${srv_regobj} powerpc-isa205-vsx32l.o"
+			srv_regobj="${srv_regobj} powerpc-isa205-ppr-dscr-vsx32l.o"
+			srv_regobj="${srv_regobj} powerpc-isa207-vsx32l.o"
+			srv_regobj="${srv_regobj} powerpc-isa207-htm-vsx32l.o"
+			srv_regobj="${srv_regobj} powerpc-e500l.o"
+			srv_regobj="${srv_regobj} powerpc-64l.o"
+			srv_regobj="${srv_regobj} powerpc-altivec64l.o"
+			srv_regobj="${srv_regobj} powerpc-vsx64l.o"
+			srv_regobj="${srv_regobj} powerpc-isa205-64l.o"
+			srv_regobj="${srv_regobj} powerpc-isa205-altivec64l.o"
+			srv_regobj="${srv_regobj} powerpc-isa205-vsx64l.o"
+			srv_regobj="${srv_regobj} powerpc-isa205-ppr-dscr-vsx64l.o"
+			srv_regobj="${srv_regobj} powerpc-isa207-vsx64l.o"
+			srv_regobj="${srv_regobj} powerpc-isa207-htm-vsx64l.o"
+			srv_tgtobj="$srv_linux_obj linux-ppc-low.o"
+			srv_tgtobj="${srv_tgtobj} nat/ppc-linux.o"
+			srv_tgtobj="${srv_tgtobj} arch/ppc-linux-common.o"
+			srv_xmlfiles="rs6000/powerpc-32l.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/powerpc-altivec32l.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/powerpc-vsx32l.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/powerpc-isa205-32l.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/powerpc-isa205-altivec32l.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/powerpc-isa205-vsx32l.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/powerpc-isa205-ppr-dscr-vsx32l.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/powerpc-isa207-vsx32l.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/powerpc-isa207-htm-vsx32l.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/power-altivec.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/power-vsx.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/power-core.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/power-linux.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/power-fpu.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/power-fpu-isa205.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/power-dscr.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/power-ppr.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/power-tar.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/power-ebb.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/power-linux-pmu.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/power-htm-spr.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/power-htm-core.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/power-htm-fpu.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/power-htm-altivec.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/power-htm-vsx.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/power-htm-ppr.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/power-htm-dscr.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/power-htm-tar.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/powerpc-e500l.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/power-spe.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/powerpc-64l.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/powerpc-altivec64l.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/powerpc-vsx64l.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/powerpc-isa205-64l.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/powerpc-isa205-altivec64l.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/powerpc-isa205-vsx64l.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/powerpc-isa205-ppr-dscr-vsx64l.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/powerpc-isa207-vsx64l.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/powerpc-isa207-htm-vsx64l.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/power64-core.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/power64-linux.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/power64-htm-core.xml"
+			srv_linux_usrregs=yes
+			srv_linux_regsets=yes
+			srv_linux_thread_db=yes
+			ipa_obj="${ipa_ppc_linux_regobj} linux-ppc-ipa.o"
+			;;
+  powerpc-*-lynxos*)	srv_regobj="powerpc-32.o"
+			srv_tgtobj="lynx-low.o lynx-ppc-low.o"
+			srv_xmlfiles="rs6000/powerpc-32.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/power-core.xml"
+			srv_xmlfiles="${srv_xmlfiles} rs6000/power-fpu.xml"
+			srv_lynxos=yes
+			;;
+  s390*-*-linux*)	srv_regobj="s390-linux32.o"
+			srv_regobj="${srv_regobj} s390-linux32v1.o"
+			srv_regobj="${srv_regobj} s390-linux32v2.o"
+			srv_regobj="${srv_regobj} s390-linux64.o"
+			srv_regobj="${srv_regobj} s390-linux64v1.o"
+			srv_regobj="${srv_regobj} s390-linux64v2.o"
+			srv_regobj="${srv_regobj} s390-te-linux64.o"
+			srv_regobj="${srv_regobj} s390-vx-linux64.o"
+			srv_regobj="${srv_regobj} s390-tevx-linux64.o"
+			srv_regobj="${srv_regobj} s390-gs-linux64.o"
+			srv_regobj="${srv_regobj} s390x-linux64.o"
+			srv_regobj="${srv_regobj} s390x-linux64v1.o"
+			srv_regobj="${srv_regobj} s390x-linux64v2.o"
+			srv_regobj="${srv_regobj} s390x-te-linux64.o"
+			srv_regobj="${srv_regobj} s390x-vx-linux64.o"
+			srv_regobj="${srv_regobj} s390x-tevx-linux64.o"
+			srv_regobj="${srv_regobj} s390x-gs-linux64.o"
+			srv_tgtobj="$srv_linux_obj linux-s390-low.o"
+			srv_xmlfiles="s390-linux32.xml"
+			srv_xmlfiles="${srv_xmlfiles} s390-linux32v1.xml"
+			srv_xmlfiles="${srv_xmlfiles} s390-linux32v2.xml"
+			srv_xmlfiles="${srv_xmlfiles} s390-linux64.xml"
+			srv_xmlfiles="${srv_xmlfiles} s390-linux64v1.xml"
+			srv_xmlfiles="${srv_xmlfiles} s390-linux64v2.xml"
+			srv_xmlfiles="${srv_xmlfiles} s390-te-linux64.xml"
+			srv_xmlfiles="${srv_xmlfiles} s390-vx-linux64.xml"
+			srv_xmlfiles="${srv_xmlfiles} s390-tevx-linux64.xml"
+			srv_xmlfiles="${srv_xmlfiles} s390-gs-linux64.xml"
+			srv_xmlfiles="${srv_xmlfiles} s390x-linux64.xml"
+			srv_xmlfiles="${srv_xmlfiles} s390x-linux64v1.xml"
+			srv_xmlfiles="${srv_xmlfiles} s390x-linux64v2.xml"
+			srv_xmlfiles="${srv_xmlfiles} s390x-te-linux64.xml"
+			srv_xmlfiles="${srv_xmlfiles} s390x-vx-linux64.xml"
+			srv_xmlfiles="${srv_xmlfiles} s390x-tevx-linux64.xml"
+			srv_xmlfiles="${srv_xmlfiles} s390x-gs-linux64.xml"
+			srv_xmlfiles="${srv_xmlfiles} s390-core32.xml"
+			srv_xmlfiles="${srv_xmlfiles} s390-core64.xml"
+			srv_xmlfiles="${srv_xmlfiles} s390x-core64.xml"
+			srv_xmlfiles="${srv_xmlfiles} s390-acr.xml"
+			srv_xmlfiles="${srv_xmlfiles} s390-fpr.xml"
+			srv_xmlfiles="${srv_xmlfiles} s390-tdb.xml"
+			srv_xmlfiles="${srv_xmlfiles} s390-vx.xml"
+			srv_xmlfiles="${srv_xmlfiles} s390-gs.xml"
+			srv_xmlfiles="${srv_xmlfiles} s390-gsbc.xml"
+			srv_linux_usrregs=yes
+			srv_linux_regsets=yes
+			srv_linux_thread_db=yes
+			ipa_obj="linux-s390-ipa.o"
+			ipa_obj="${ipa_obj} s390-linux32-ipa.o"
+			ipa_obj="${ipa_obj} s390-linux32v1-ipa.o"
+			ipa_obj="${ipa_obj} s390-linux32v2-ipa.o"
+			ipa_obj="${ipa_obj} s390-linux64-ipa.o"
+			ipa_obj="${ipa_obj} s390-linux64v1-ipa.o"
+			ipa_obj="${ipa_obj} s390-linux64v2-ipa.o"
+			ipa_obj="${ipa_obj} s390-vx-linux64-ipa.o"
+			ipa_obj="${ipa_obj} s390-te-linux64-ipa.o"
+			ipa_obj="${ipa_obj} s390-tevx-linux64-ipa.o"
+			ipa_obj="${ipa_obj} s390-gs-linux64-ipa.o"
+			ipa_obj="${ipa_obj} s390x-linux64-ipa.o"
+			ipa_obj="${ipa_obj} s390x-linux64v1-ipa.o"
+			ipa_obj="${ipa_obj} s390x-linux64v2-ipa.o"
+			ipa_obj="${ipa_obj} s390x-vx-linux64-ipa.o"
+			ipa_obj="${ipa_obj} s390x-te-linux64-ipa.o"
+			ipa_obj="${ipa_obj} s390x-tevx-linux64-ipa.o"
+			ipa_obj="${ipa_obj} s390x-gs-linux64-ipa.o"
+			;;
+  sh*-*-linux*)		srv_regobj=reg-sh.o
+			srv_tgtobj="$srv_linux_obj linux-sh-low.o"
+			srv_linux_usrregs=yes
+			srv_linux_regsets=yes
+			srv_linux_thread_db=yes
+			;;
+  sparc*-*-linux*)	srv_regobj=reg-sparc64.o
+			srv_tgtobj="$srv_linux_obj linux-sparc-low.o"
+			srv_linux_regsets=yes
+			srv_linux_thread_db=yes
+			;;
+  tic6x-*-uclinux)	if $development; then
+			  srv_regobj="tic6x-c64xp-linux.o"
+			  srv_regobj="${srv_regobj} tic6x-c64x-linux.o"
+			  srv_regobj="${srv_regobj} tic6x-c62x-linux.o"
+                        else
+			  srv_regobj=""
+                        fi
+			srv_tgtobj="$srv_linux_obj linux-tic6x-low.o"
+			srv_tgtobj="${srv_tgtobj} arch/tic6x.o"
+			srv_linux_regsets=yes
+			srv_linux_usrregs=yes
+			srv_linux_thread_db=yes
+			;;
+  x86_64-*-linux*)	srv_tgtobj="$srv_linux_obj linux-x86-low.o x86-low.o"
+			srv_tgtobj="${srv_tgtobj} nat/x86-dregs.o i387-fp.o"
+			srv_tgtobj="${srv_tgtobj} arch/i386.o arch/amd64.o"
+			srv_tgtobj="${srv_tgtobj} linux-x86-tdesc.o"
+			srv_tgtobj="${srv_tgtobj} nat/linux-btrace.o"
+			srv_tgtobj="${srv_tgtobj} nat/x86-linux.o"
+			srv_tgtobj="${srv_tgtobj} nat/x86-linux-dregs.o"
+			srv_tgtobj="${srv_tgtobj} nat/amd64-linux-siginfo.o"
+			srv_linux_usrregs=yes # This is for i386 progs.
+			srv_linux_regsets=yes
+			srv_linux_thread_db=yes
+			srv_linux_btrace=yes
+			ipa_obj="linux-amd64-ipa.o linux-x86-tdesc-ipa.o"
+			ipa_obj="${ipa_obj} arch/amd64-ipa.o"
+			;;
+  x86_64-*-mingw*)	srv_regobj=""
+			srv_tgtobj="x86-low.o nat/x86-dregs.o i387-fp.o"
+			srv_tgtobj="${srv_tgtobj} win32-low.o win32-i386-low.o"
+			srv_tgtobj="${srv_tgtobj} arch/amd64.o"
+			srv_mingw=yes
+			;;
+  x86_64-*-cygwin*)	srv_regobj=""
+			srv_tgtobj="x86-low.o nat/x86-dregs.o i387-fp.o"
+			srv_tgtobj="${srv_tgtobj} win32-low.o win32-i386-low.o"
+			srv_tgtobj="${srv_tgtobj} arch/amd64.o"
+			;;
+
+  xtensa*-*-linux*)	srv_regobj=reg-xtensa.o
+			srv_tgtobj="$srv_linux_obj linux-xtensa-low.o"
+			srv_linux_regsets=yes
+			srv_linux_thread_db=yes
+			;;
+  tilegx-*-linux*)	srv_regobj=reg-tilegx.o
+			srv_regobj="${srv_regobj} reg-tilegx32.o"
+			srv_tgtobj="$srv_linux_obj linux-tile-low.o"
+			srv_linux_regsets=yes
+			srv_linux_thread_db=yes
+			;;
+  *)
+			# Who are you?
+			UNSUPPORTED=1
+			;;
+esac