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Re: [PATCH v2 2/3] aarch64: Add support for aarch64-gnu (GNU/Hurd on AAr
From: |
Richard Sandiford |
Subject: |
Re: [PATCH v2 2/3] aarch64: Add support for aarch64-gnu (GNU/Hurd on AArch64) |
Date: |
Tue, 02 Apr 2024 18:26:06 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux) |
Sergey Bugaev <bugaevc@gmail.com> writes:
> Coupled with a corresponding binutils patch, this produces a toolchain that
> can
> sucessfully build working binaries targeting aarch64-gnu.
>
> gcc/Changelog:
>
> * config.gcc: Recognize aarch64*-*-gnu* targets.
> * config/aarch64/aarch64-gnu.h: New file.
>
> Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
> ---
> gcc/config.gcc | 6 +++
> gcc/config/aarch64/aarch64-gnu.h | 68 ++++++++++++++++++++++++++++++++
> 2 files changed, 74 insertions(+)
> create mode 100644 gcc/config/aarch64/aarch64-gnu.h
I don't know if you're waiting on me, but just in case: this and patch 3
still LGTM if Thomas is OK with them.
Thanks,
Richard
> diff --git a/gcc/config.gcc b/gcc/config.gcc
> index 87a5c92b6..9d935164c 100644
> --- a/gcc/config.gcc
> +++ b/gcc/config.gcc
> @@ -1264,6 +1264,12 @@ aarch64*-*-linux*)
> done
> TM_MULTILIB_CONFIG=`echo $TM_MULTILIB_CONFIG | sed 's/^,//'`
> ;;
> +aarch64*-*-gnu*)
> + tm_file="${tm_file} elfos.h gnu-user.h gnu.h glibc-stdint.h"
> + tm_file="${tm_file} aarch64/aarch64-elf.h aarch64/aarch64-errata.h
> aarch64/aarch64-gnu.h"
> + tmake_file="${tmake_file} aarch64/t-aarch64"
> + tm_defines="${tm_defines} TARGET_DEFAULT_ASYNC_UNWIND_TABLES=1"
> + ;;
> aarch64*-wrs-vxworks*)
> tm_file="${tm_file} elfos.h aarch64/aarch64-elf.h"
> tm_file="${tm_file} vx-common.h vxworks.h aarch64/aarch64-vxworks.h"
> diff --git a/gcc/config/aarch64/aarch64-gnu.h
> b/gcc/config/aarch64/aarch64-gnu.h
> new file mode 100644
> index 000000000..ee5494034
> --- /dev/null
> +++ b/gcc/config/aarch64/aarch64-gnu.h
> @@ -0,0 +1,68 @@
> +/* Definitions for AArch64 running GNU/Hurd.
> + Copyright (C) 2009-2024 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/>. */
> +
> +#ifndef GCC_AARCH64_GNU_H
> +#define GCC_AARCH64_GNU_H
> +
> +#define GNU_USER_DYNAMIC_LINKER
> "/lib/ld-aarch64%{mbig-endian:_be}%{mabi=ilp32:_ilp32}.so.1"
> +
> +#define CPP_SPEC "%{pthread:-D_REENTRANT}"
> +
> +#define GNU_TARGET_LINK_SPEC "%{h*} \
> + %{static:-Bstatic} \
> + %{shared:-shared} \
> + %{symbolic:-Bsymbolic} \
> + %{!static:%{!static-pie: \
> + %{rdynamic:-export-dynamic} \
> + %{!shared:-dynamic-linker " GNU_USER_DYNAMIC_LINKER "}}} \
> + %{static-pie:-Bstatic -pie --no-dynamic-linker -z text} \
> + -X \
> + %{mbig-endian:-EB} %{mlittle-endian:-EL} \
> + -maarch64gnu%{mabi=ilp32:32}%{mbig-endian:b}"
> +
> +
> +#define LINK_SPEC GNU_TARGET_LINK_SPEC AARCH64_ERRATA_LINK_SPEC
> +
> +#define GNU_USER_TARGET_MATHFILE_SPEC \
> + "%{Ofast|ffast-math|funsafe-math-optimizations:%{!shared:crtfastmath.o%s}}"
> +
> +#undef ENDFILE_SPEC
> +#define ENDFILE_SPEC \
> + GNU_USER_TARGET_MATHFILE_SPEC " " \
> + GNU_USER_TARGET_ENDFILE_SPEC
> +
> +#define TARGET_OS_CPP_BUILTINS() \
> + do \
> + { \
> + GNU_USER_TARGET_OS_CPP_BUILTINS(); \
> + } \
> + while (0)
> +
> +#define TARGET_ASM_FILE_END aarch64_file_end_indicate_exec_stack
> +
> +/* Uninitialized common symbols in non-PIE executables, even with
> + strong definitions in dependent shared libraries, will resolve
> + to COPY relocated symbol in the executable. See PR65780. */
> +#undef TARGET_BINDS_LOCAL_P
> +#define TARGET_BINDS_LOCAL_P default_binds_local_p_2
> +
> +/* Define this to be nonzero if static stack checking is supported. */
> +#define STACK_CHECK_STATIC_BUILTIN 1
> +
> +#endif /* GCC_AARCH64_GNU_H */
- Re: [PATCH v2 2/3] aarch64: Add support for aarch64-gnu (GNU/Hurd on AArch64),
Richard Sandiford <=