binutils-gdb/gdbserver/configure.srv
Maciej W. Rozycki bf84f70666 gdbserver: Add RISC-V/Linux support
Implement RISC-V/Linux support for both RV64 and RV32 systems, including
XML target description handling based on features determined, GPR and
FPR regset support including dynamic sizing of the latter, and software
breakpoint handling.  Define two NT_FPREGSET regsets of a different size
matching the FPR sizes supported for generic `gdbserver' code to pick
from according to what the OS supplies.

Also handle a glibc bug where ELF_NFPREG is defined in terms of NFPREG,
however NFPREG is nowhere defined.

2020-02-19  Maciej W. Rozycki  <macro@wdc.com>
	    Andrew Burgess  <andrew.burgess@embecosm.com>

	gdb/
	* NEWS: Mention RISC-V GNU/Linux GDBserver support.

	gdbserver/
	* linux-riscv-low.cc: New file.
	* Makefile.in (SFILES): Add linux-riscv-low.cc, arch/riscv.c,
	and nat/riscv-linux-tdesc.c.
	* configure.srv <riscv*-*-linux*> (srv_tgtobj)
	(srv_linux_regsets, srv_linux_usrregs, srv_linux_thread_db):
	Define.
2020-02-19 01:24:37 +00:00

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# 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 "${host}" and "${target}" variables.
# GDBserver can only debug native programs.
if test "${target}" = "${host}"; then
gdbserver_host=${host}
else
gdbserver_host=
fi
case "${gdbserver_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
;;
riscv*-*-linux*) srv_tgtobj="arch/riscv.o nat/riscv-linux-tdesc.o"
srv_tgtobj="${srv_tgtobj} linux-riscv-low.o"
srv_tgtobj="${srv_tgtobj} ${srv_linux_obj}"
srv_linux_regsets=yes
srv_linux_usrregs=yes
srv_linux_thread_db=yes
;;
s390*-*-linux*) srv_regobj="s390-linux32.o"
srv_regobj="${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