1 /* Definitions for Linux for S/390.
2 Copyright (C) 1999, 2000, 2001, 2002, 2004, 2005, 2006
3 Free Software Foundation, Inc.
4 Contributed by Hartmut Penner (hpenner@de.ibm.com) and
5 Ulrich Weigand (uweigand@de.ibm.com).
7 This file is part of GCC.
9 GCC is free software; you can redistribute it and/or modify it under
10 the terms of the GNU General Public License as published by the Free
11 Software Foundation; either version 2, or (at your option) any later
14 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 You should have received a copy of the GNU General Public License
20 along with GCC; see the file COPYING. If not, write to the Free
21 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
27 /* Target specific version string. */
29 #ifdef DEFAULT_TARGET_64BIT
31 #define TARGET_VERSION fprintf (stderr, " (Linux for zSeries)");
34 #define TARGET_VERSION fprintf (stderr, " (Linux for S/390)");
38 /* Target specific type definitions. */
40 /* ??? Do we really want long as size_t on 31-bit? */
42 #define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "long unsigned int")
44 #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")
47 #define WCHAR_TYPE "int"
48 #undef WCHAR_TYPE_SIZE
49 #define WCHAR_TYPE_SIZE 32
52 /* Target specific preprocessor settings. */
54 #define TARGET_OS_CPP_BUILTINS() \
57 LINUX_TARGET_OS_CPP_BUILTINS(); \
62 /* Target specific assembler settings. */
65 #define ASM_SPEC "%{m31&m64}%{mesa&mzarch}%{march=*}"
68 /* Target specific linker settings. */
70 #ifdef DEFAULT_TARGET_64BIT
71 #define MULTILIB_DEFAULTS { "m64" }
73 #define MULTILIB_DEFAULTS { "m31" }
76 #define GLIBC_DYNAMIC_LINKER32 "/lib/ld.so.1"
77 #define GLIBC_DYNAMIC_LINKER64 "/lib/ld64.so.1"
81 "%{m31:-m elf_s390}%{m64:-m elf64_s390} \
86 %{rdynamic:-export-dynamic} \
88 %{m31:-dynamic-linker " LINUX_DYNAMIC_LINKER32 "} \
89 %{m64:-dynamic-linker " LINUX_DYNAMIC_LINKER64 "}}}}"
91 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
93 #define TARGET_ASM_FILE_END file_end_indicate_exec_stack
95 #define MD_UNWIND_SUPPORT "config/s390/linux-unwind.h"
97 #ifdef TARGET_LIBC_PROVIDES_SSP
98 /* s390 glibc provides __stack_chk_guard in 0x14(tp),
99 s390x glibc provides it at 0x28(tp). */
100 #define TARGET_THREAD_SSP_OFFSET (TARGET_64BIT ? 0x28 : 0x14)
103 /* Define if long doubles should be mangled as 'g'. */
104 #define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING