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). 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 2, 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 COPYING. If not, write to the Free 21 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 22 02110-1301, USA. */ 23 24 #ifndef _LINUX_H 25 #define _LINUX_H 26 27 /* Target specific version string. */ 28 29 #ifdef DEFAULT_TARGET_64BIT 30 #undef TARGET_VERSION 31 #define TARGET_VERSION fprintf (stderr, " (Linux for zSeries)"); 32 #else 33 #undef TARGET_VERSION 34 #define TARGET_VERSION fprintf (stderr, " (Linux for S/390)"); 35 #endif 36 37 38 /* Target specific type definitions. */ 39 40 /* ??? Do we really want long as size_t on 31-bit? */ 41 #undef SIZE_TYPE 42 #define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "long unsigned int") 43 #undef PTRDIFF_TYPE 44 #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int") 45 46 #undef WCHAR_TYPE 47 #define WCHAR_TYPE "int" 48 #undef WCHAR_TYPE_SIZE 49 #define WCHAR_TYPE_SIZE 32 50 51 52 /* Target specific preprocessor settings. */ 53 54 #define TARGET_OS_CPP_BUILTINS() \ 55 do \ 56 { \ 57 LINUX_TARGET_OS_CPP_BUILTINS(); \ 58 } \ 59 while (0) 60 61 62 /* Target specific assembler settings. */ 63 64 #undef ASM_SPEC 65 #define ASM_SPEC "%{m31&m64}%{mesa&mzarch}%{march=*}" 66 67 68 /* Target specific linker settings. */ 69 70 #ifdef DEFAULT_TARGET_64BIT 71 #define MULTILIB_DEFAULTS { "m64" } 72 #else 73 #define MULTILIB_DEFAULTS { "m31" } 74 #endif 75 76 #define GLIBC_DYNAMIC_LINKER32 "/lib/ld.so.1" 77 #define GLIBC_DYNAMIC_LINKER64 "/lib/ld64.so.1" 78 79 #undef LINK_SPEC 80 #define LINK_SPEC \ 81 "%{m31:-m elf_s390}%{m64:-m elf64_s390} \ 82 %{shared:-shared} \ 83 %{!shared: \ 84 %{static:-static} \ 85 %{!static: \ 86 %{rdynamic:-export-dynamic} \ 87 %{!dynamic-linker: \ 88 %{m31:-dynamic-linker " LINUX_DYNAMIC_LINKER32 "} \ 89 %{m64:-dynamic-linker " LINUX_DYNAMIC_LINKER64 "}}}}" 90 91 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}" 92 93 #define TARGET_ASM_FILE_END file_end_indicate_exec_stack 94 95 #define MD_UNWIND_SUPPORT "config/s390/linux-unwind.h" 96 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) 101 #endif 102 103 /* Define if long doubles should be mangled as 'g'. */ 104 #define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING 105 106 #endif 107