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LoongArch: support loongarch*-elf target

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gcc/ChangeLog:

	* config.gcc: add loongarch*-elf target.
	* config/loongarch/elf.h: New file.
	Link against newlib by default.

libgcc/ChangeLog:

	* config.host: add loongarch*-elf target.
This commit is contained in:
Yang Yujie 2023-06-30 17:07:59 +08:00 • committed by Lulu Cheng
parent 18e2e589ee
commit 976f4f9e47
3 changed files with 72 additions and 3 deletions
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15
gcc/config.gcc
View file

@ -2491,6 +2491,18 @@ loongarch*-*-linux*)
gcc_cv_initfini_array=yes
;;
loongarch*-*-elf*)
tm_file="elfos.h newlib-stdint.h ${tm_file}"
tm_file="${tm_file} loongarch/elf.h loongarch/linux.h"
tmake_file="${tmake_file} loongarch/t-linux"
gnu_ld=yes
gas=yes
# For .init_array support. The configure script cannot always
# automatically detect that GAS supports it, yet we require it.
gcc_cv_initfini_array=yes
;;
mips*-*-netbsd*) # NetBSD/mips, either endian.
target_cpu_default="MASK_ABICALLS"
tm_file="elfos.h ${tm_file} mips/elf.h ${nbsd_tm_file} mips/netbsd.h"
@ -4932,8 +4944,9 @@ case "${target}" in
esac
case ${target} in
*-linux-gnu*) triplet_os="linux-gnu";;
*-linux-gnu*) triplet_os="linux-gnu";;
*-linux-musl*) triplet_os="linux-musl";;
*-elf*) triplet_os="elf";;
*)
echo "Unsupported target ${target}." 1>&2
exit 1

51
gcc/config/loongarch/elf.h Normal file
View file

@ -0,0 +1,51 @@
/* Definitions for LoongArch ELF-based systems.
Copyright (C) 2023 Free Software Foundation, Inc.
This file is part of GCC.
GCC 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 3, or (at your option)
any later version.
GCC 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 GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
/* Define the size of the wide character type. */
#undef WCHAR_TYPE
#define WCHAR_TYPE "int"
#undef WCHAR_TYPE_SIZE
#define WCHAR_TYPE_SIZE 32
/* GNU-specific SPEC definitions. */
#define GNU_USER_LINK_EMULATION "elf" ABI_GRLEN_SPEC "loongarch"
#undef GNU_USER_TARGET_LINK_SPEC
#define GNU_USER_TARGET_LINK_SPEC \
"%{shared} -m " GNU_USER_LINK_EMULATION
/* Link against Newlib libraries, because the ELF backend assumes Newlib.
Handle the circular dependence between libc and libgloss. */
#undef LIB_SPEC
#define LIB_SPEC "--start-group -lc %{!specs=nosys.specs:-lgloss} --end-group"
#undef LINK_SPEC
#define LINK_SPEC GNU_USER_TARGET_LINK_SPEC
#undef STARTFILE_SPEC
#define STARTFILE_SPEC "crt0%O%s crtbegin%O%s"
#undef ENDFILE_SPEC
#define ENDFILE_SPEC "crtend%O%s"
#undef SUBTARGET_CC1_SPEC
#define SUBTARGET_CC1_SPEC "%{profile:-p}"

9
libgcc/config.host
View file

@ -136,7 +136,7 @@ hppa*-*-*)
lm32*-*-*)
cpu_type=lm32
;;
loongarch*-*-*)
loongarch*-*)
cpu_type=loongarch
tmake_file="loongarch/t-loongarch"
if test "${libgcc_cv_loongarch_hard_float}" = yes; then
@ -944,7 +944,7 @@ lm32-*-uclinux*)
extra_parts="$extra_parts crtbegin.o crtendS.o crtbeginT.o"
tmake_file="lm32/t-lm32 lm32/t-uclinux t-libgcc-pic t-softfp-sfdf t-softfp"
;;
loongarch*-*-linux*)
loongarch*-linux*)
extra_parts="$extra_parts crtfastmath.o"
tmake_file="${tmake_file} t-crtfm loongarch/t-crtstuff"
case ${host} in
@ -954,6 +954,11 @@ loongarch*-*-linux*)
esac
md_unwind_header=loongarch/linux-unwind.h
;;
loongarch*-elf*)
extra_parts="$extra_parts crtfastmath.o"
tmake_file="${tmake_file} t-crtfm loongarch/t-crtstuff"
tmake_file="${tmake_file} t-slibgcc-libgcc"
;;
m32r-*-elf*)
tmake_file="$tmake_file m32r/t-m32r t-fdpbit"
extra_parts="$extra_parts crtinit.o crtfini.o"