1 /* Definitions for Linux for S/390. 2 Copyright (C) 1999, 2000, 2001, 2002, 2004, 2005, 2006, 2007 3 Free Software Foundation, Inc. 4 Contributed by Hartmut Penner (hpenner@de.ibm.com) and 5 Ulrich Weigand (uweigand@de.ibm.com). 6 7 This file is part of GCC. 8 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 3, or (at your option) any later 12 version. 13 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 17 for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with GCC; see the file COPYING3. If not see 21 <http://www.gnu.org/licenses/>. */ 22 23 #ifndef _LINUX_H 24 #define _LINUX_H 25 26 /* Target specific version string. */ 27 28 #ifdef DEFAULT_TARGET_64BIT 29 #undef TARGET_VERSION 30 #define TARGET_VERSION fprintf (stderr, " (Linux for zSeries)"); 31 #else 32 #undef TARGET_VERSION 33 #define TARGET_VERSION fprintf (stderr, " (Linux for S/390)"); 34 #endif 35 36 37 /* Target specific type definitions. */ 38 39 /* ??? Do we really want long as size_t on 31-bit? */ 40 #undef SIZE_TYPE 41 #define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "long unsigned int") 42 #undef PTRDIFF_TYPE 43 #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int") 44 45 #undef WCHAR_TYPE 46 #define WCHAR_TYPE "int" 47 #undef WCHAR_TYPE_SIZE 48 #define WCHAR_TYPE_SIZE 32 49 50 51 /* Target specific preprocessor settings. */ 52 53 #define TARGET_OS_CPP_BUILTINS() \ 54 do \ 55 { \ 56 LINUX_TARGET_OS_CPP_BUILTINS(); \ 57 } \ 58 while (0) 59 60 61 /* Target specific assembler settings. */ 62 63 #undef ASM_SPEC 64 #define ASM_SPEC "%{m31&m64}%{mesa&mzarch}%{march=*}" 65 66 67 /* Target specific linker settings. */ 68 69 #ifdef DEFAULT_TARGET_64BIT 70 #define MULTILIB_DEFAULTS { "m64" } 71 #else 72 #define MULTILIB_DEFAULTS { "m31" } 73 #endif 74 75 #define GLIBC_DYNAMIC_LINKER32 "/lib/ld.so.1" 76 #define GLIBC_DYNAMIC_LINKER64 "/lib/ld64.so.1" 77 78 #undef LINK_SPEC 79 #define LINK_SPEC \ 80 "%{m31:-m elf_s390}%{m64:-m elf64_s390} \ 81 %{shared:-shared} \ 82 %{!shared: \ 83 %{static:-static} \ 84 %{!static: \ 85 %{rdynamic:-export-dynamic} \ 86 %{!dynamic-linker: \ 87 %{m31:-dynamic-linker " LINUX_DYNAMIC_LINKER32 "} \ 88 %{m64:-dynamic-linker " LINUX_DYNAMIC_LINKER64 "}}}}" 89 90 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}" 91 92 #define TARGET_ASM_FILE_END file_end_indicate_exec_stack 93 94 #define MD_UNWIND_SUPPORT "config/s390/linux-unwind.h" 95 96 #ifdef TARGET_LIBC_PROVIDES_SSP 97 /* s390 glibc provides __stack_chk_guard in 0x14(tp), 98 s390x glibc provides it at 0x28(tp). */ 99 #define TARGET_THREAD_SSP_OFFSET (TARGET_64BIT ? 0x28 : 0x14) 100 #endif 101 102 /* Define if long doubles should be mangled as 'g'. */ 103 #define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING 104 105 #endif 106