1107590Sobrien/* Definitions for Linux for S/390. 2169689Skan Copyright (C) 1999, 2000, 2001, 2002, 2004, 2005, 2006 3169689Skan Free Software Foundation, Inc. 4107590Sobrien Contributed by Hartmut Penner (hpenner@de.ibm.com) and 5107590Sobrien Ulrich Weigand (uweigand@de.ibm.com). 6107590Sobrien 7132718SkanThis file is part of GCC. 8107590Sobrien 9132718SkanGCC is free software; you can redistribute it and/or modify it under 10132718Skanthe terms of the GNU General Public License as published by the Free 11132718SkanSoftware Foundation; either version 2, or (at your option) any later 12132718Skanversion. 13107590Sobrien 14132718SkanGCC is distributed in the hope that it will be useful, but WITHOUT ANY 15132718SkanWARRANTY; without even the implied warranty of MERCHANTABILITY or 16132718SkanFITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 17132718Skanfor more details. 18107590Sobrien 19107590SobrienYou should have received a copy of the GNU General Public License 20132718Skanalong with GCC; see the file COPYING. If not, write to the Free 21169689SkanSoftware Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 22169689Skan02110-1301, USA. */ 23107590Sobrien 24107590Sobrien#ifndef _LINUX_H 25107590Sobrien#define _LINUX_H 26107590Sobrien 27107590Sobrien/* Target specific version string. */ 28107590Sobrien 29107590Sobrien#ifdef DEFAULT_TARGET_64BIT 30107590Sobrien#undef TARGET_VERSION 31107590Sobrien#define TARGET_VERSION fprintf (stderr, " (Linux for zSeries)"); 32107590Sobrien#else 33107590Sobrien#undef TARGET_VERSION 34107590Sobrien#define TARGET_VERSION fprintf (stderr, " (Linux for S/390)"); 35107590Sobrien#endif 36107590Sobrien 37107590Sobrien 38107590Sobrien/* Target specific type definitions. */ 39107590Sobrien 40107590Sobrien/* ??? Do we really want long as size_t on 31-bit? */ 41107590Sobrien#undef SIZE_TYPE 42107590Sobrien#define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "long unsigned int") 43107590Sobrien#undef PTRDIFF_TYPE 44107590Sobrien#define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int") 45107590Sobrien 46107590Sobrien#undef WCHAR_TYPE 47107590Sobrien#define WCHAR_TYPE "int" 48107590Sobrien#undef WCHAR_TYPE_SIZE 49107590Sobrien#define WCHAR_TYPE_SIZE 32 50107590Sobrien 51107590Sobrien 52107590Sobrien/* Target specific preprocessor settings. */ 53107590Sobrien 54117395Skan#define TARGET_OS_CPP_BUILTINS() \ 55117395Skan do \ 56117395Skan { \ 57132718Skan LINUX_TARGET_OS_CPP_BUILTINS(); \ 58117395Skan } \ 59117395Skan while (0) 60107590Sobrien 61107590Sobrien 62107590Sobrien/* Target specific assembler settings. */ 63107590Sobrien 64107590Sobrien#undef ASM_SPEC 65132718Skan#define ASM_SPEC "%{m31&m64}%{mesa&mzarch}%{march=*}" 66107590Sobrien 67107590Sobrien 68107590Sobrien/* Target specific linker settings. */ 69107590Sobrien 70117395Skan#ifdef DEFAULT_TARGET_64BIT 71117395Skan#define MULTILIB_DEFAULTS { "m64" } 72117395Skan#else 73117395Skan#define MULTILIB_DEFAULTS { "m31" } 74117395Skan#endif 75117395Skan 76169689Skan#define GLIBC_DYNAMIC_LINKER32 "/lib/ld.so.1" 77169689Skan#define GLIBC_DYNAMIC_LINKER64 "/lib/ld64.so.1" 78169689Skan 79132718Skan#undef LINK_SPEC 80132718Skan#define LINK_SPEC \ 81132718Skan "%{m31:-m elf_s390}%{m64:-m elf64_s390} \ 82107590Sobrien %{shared:-shared} \ 83107590Sobrien %{!shared: \ 84107590Sobrien %{static:-static} \ 85107590Sobrien %{!static: \ 86107590Sobrien %{rdynamic:-export-dynamic} \ 87132718Skan %{!dynamic-linker: \ 88169689Skan %{m31:-dynamic-linker " LINUX_DYNAMIC_LINKER32 "} \ 89169689Skan %{m64:-dynamic-linker " LINUX_DYNAMIC_LINKER64 "}}}}" 90107590Sobrien 91169689Skan#define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}" 92107590Sobrien 93132718Skan#define TARGET_ASM_FILE_END file_end_indicate_exec_stack 94107590Sobrien 95169689Skan#define MD_UNWIND_SUPPORT "config/s390/linux-unwind.h" 96107590Sobrien 97169689Skan#ifdef TARGET_LIBC_PROVIDES_SSP 98169689Skan/* s390 glibc provides __stack_chk_guard in 0x14(tp), 99169689Skan s390x glibc provides it at 0x28(tp). */ 100169689Skan#define TARGET_THREAD_SSP_OFFSET (TARGET_64BIT ? 0x28 : 0x14) 101169689Skan#endif 102107590Sobrien 103169689Skan/* Define if long doubles should be mangled as 'g'. */ 104169689Skan#define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING 105169689Skan 106107590Sobrien#endif 107