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/* Definitions for Linux for S/390.
Copyright (C) 1999-2022 Free Software Foundation, Inc.
Contributed by Hartmut Penner (hpenner@de.ibm.com) and
Ulrich Weigand (uweigand@de.ibm.com).
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 _LINUX_H
#define _LINUX_H
/* Target specific type definitions. */
/* For 31 bit our size type differs from most other targets (where it
is "unsigned int"). The difference tends to cause trouble e.g.:
Glibc BZ #16712, GCC BZ #79358 but cannot be changed due to ABI
issues. */
#undef SIZE_TYPE
#define SIZE_TYPE "long unsigned int"
#undef PTRDIFF_TYPE
#define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")
#undef WCHAR_TYPE
#define WCHAR_TYPE "int"
#undef WCHAR_TYPE_SIZE
#define WCHAR_TYPE_SIZE 32
/* Target specific preprocessor settings. */
#define TARGET_OS_CPP_BUILTINS() \
do \
{ \
GNU_USER_TARGET_OS_CPP_BUILTINS(); \
} \
while (0)
/* Target specific assembler settings. */
/* Rewrite -march=arch* options to the original CPU name in order to
make it work with older binutils. */
#undef ASM_SPEC
#define ASM_SPEC \
"%{m31&m64}%{mesa&mzarch}%{march=z*}" \
"%{march=arch5:-march=z900}" \
"%{march=arch6:-march=z990}" \
"%{march=arch7:-march=z9-ec}" \
"%{march=arch8:-march=z10}" \
"%{march=arch9:-march=z196}" \
"%{march=arch10:-march=zEC12}" \
"%{march=arch11:-march=z13}"
/* Target specific linker settings. */
#ifdef DEFAULT_TARGET_64BIT
#define MULTILIB_DEFAULTS { "m64" }
#else
#define MULTILIB_DEFAULTS { "m31" }
#endif
#define GLIBC_DYNAMIC_LINKER32 "/lib/ld.so.1"
#define GLIBC_DYNAMIC_LINKER64 "/lib/ld64.so.1"
#undef MUSL_DYNAMIC_LINKER32
#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-s390.so.1"
#undef MUSL_DYNAMIC_LINKER64
#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-s390x.so.1"
#undef LINK_SPEC
#define LINK_SPEC \
"%{m31:-m elf_s390}%{m64:-m elf64_s390} \
%{shared:-shared} \
%{!shared: \
%{static:-static} \
%{!static:%{!static-pie: \
%{rdynamic:-export-dynamic} \
%{m31:-dynamic-linker " GNU_USER_DYNAMIC_LINKER32 "} \
%{m64:-dynamic-linker " GNU_USER_DYNAMIC_LINKER64 "}}}} \
%{static-pie:-static -pie --no-dynamic-linker -z text}"
#define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
#ifdef TARGET_LIBC_PROVIDES_SSP
/* s390 glibc provides __stack_chk_guard in 0x14(tp),
s390x glibc provides it at 0x28(tp). */
#define TARGET_THREAD_SSP_OFFSET (TARGET_64BIT ? 0x28 : 0x14)
#endif
/* Define if long doubles should be mangled as 'g'. */
#define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING
#undef TARGET_LIBC_HAS_FUNCTION
#define TARGET_LIBC_HAS_FUNCTION gnu_libc_has_function
/* 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
#endif
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