1/* Definitions for MIPS running Linux-based GNU systems with ELF format. 2 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 3 Free Software Foundation, Inc. 4 5This file is part of GCC. 6 7GCC is free software; you can redistribute it and/or modify 8it under the terms of the GNU General Public License as published by 9the Free Software Foundation; either version 2, or (at your option) 10any later version. 11 12GCC is distributed in the hope that it will be useful, 13but WITHOUT ANY WARRANTY; without even the implied warranty of 14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15GNU General Public License for more details. 16 17You should have received a copy of the GNU General Public License 18along with GCC; see the file COPYING. If not, write to 19the Free Software Foundation, 51 Franklin Street, Fifth Floor, 20Boston, MA 02110-1301, USA. */ 21 22#undef WCHAR_TYPE 23#define WCHAR_TYPE "int" 24 25#undef WCHAR_TYPE_SIZE 26#define WCHAR_TYPE_SIZE 32 27 28/* If defined, a C expression whose value is a string containing the 29 assembler operation to identify the following data as 30 uninitialized global data. If not defined, and neither 31 `ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined, 32 uninitialized global data will be output in the data section if 33 `-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be 34 used. */ 35#define BSS_SECTION_ASM_OP "\t.section\t.bss" 36 37#define ASM_OUTPUT_ALIGNED_BSS mips_output_aligned_bss 38 39#undef ASM_DECLARE_OBJECT_NAME 40#define ASM_DECLARE_OBJECT_NAME mips_declare_object_name 41 42#undef TARGET_VERSION 43#if TARGET_ENDIAN_DEFAULT == 0 44#define TARGET_VERSION fprintf (stderr, " (MIPSel GNU/Linux with ELF)"); 45#else 46#define TARGET_VERSION fprintf (stderr, " (MIPS GNU/Linux with ELF)"); 47#endif 48 49#undef MD_EXEC_PREFIX 50#undef MD_STARTFILE_PREFIX 51 52/* If we don't set MASK_ABICALLS, we can't default to PIC. */ 53#undef TARGET_DEFAULT 54#define TARGET_DEFAULT MASK_ABICALLS 55 56#define TARGET_OS_CPP_BUILTINS() \ 57 do { \ 58 LINUX_TARGET_OS_CPP_BUILTINS(); \ 59 /* The GNU C++ standard library requires this. */ \ 60 if (c_dialect_cxx ()) \ 61 builtin_define ("_GNU_SOURCE"); \ 62 \ 63 if (mips_abi == ABI_N32) \ 64 { \ 65 builtin_define ("_ABIN32=2"); \ 66 builtin_define ("_MIPS_SIM=_ABIN32"); \ 67 builtin_define ("_MIPS_SZLONG=32"); \ 68 builtin_define ("_MIPS_SZPTR=32"); \ 69 } \ 70 else if (mips_abi == ABI_64) \ 71 { \ 72 builtin_define ("_ABI64=3"); \ 73 builtin_define ("_MIPS_SIM=_ABI64"); \ 74 builtin_define ("_MIPS_SZLONG=64"); \ 75 builtin_define ("_MIPS_SZPTR=64"); \ 76 } \ 77 else \ 78 { \ 79 builtin_define ("_ABIO32=1"); \ 80 builtin_define ("_MIPS_SIM=_ABIO32"); \ 81 builtin_define ("_MIPS_SZLONG=32"); \ 82 builtin_define ("_MIPS_SZPTR=32"); \ 83 } \ 84 if (TARGET_FLOAT64) \ 85 builtin_define ("_MIPS_FPSET=32"); \ 86 else \ 87 builtin_define ("_MIPS_FPSET=16"); \ 88 \ 89 builtin_define ("_MIPS_SZINT=32"); \ 90 } while (0) 91 92#undef SUBTARGET_CPP_SPEC 93#define SUBTARGET_CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}" 94 95/* A standard GNU/Linux mapping. On most targets, it is included in 96 CC1_SPEC itself by config/linux.h, but mips.h overrides CC1_SPEC 97 and provides this hook instead. */ 98#undef SUBTARGET_CC1_SPEC 99#define SUBTARGET_CC1_SPEC "%{profile:-p}" 100 101/* From iris5.h */ 102/* -G is incompatible with -KPIC which is the default, so only allow objects 103 in the small data section if the user explicitly asks for it. */ 104#undef MIPS_DEFAULT_GVALUE 105#define MIPS_DEFAULT_GVALUE 0 106 107#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1" 108 109/* Borrowed from sparc/linux.h */ 110#undef LINK_SPEC 111#define LINK_SPEC \ 112 "%(endian_spec) \ 113 %{shared:-shared} \ 114 %{!shared: \ 115 %{!ibcs: \ 116 %{!static: \ 117 %{rdynamic:-export-dynamic} \ 118 %{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER "}} \ 119 %{static:-static}}}" 120 121#undef SUBTARGET_ASM_SPEC 122#define SUBTARGET_ASM_SPEC "%{mabi=64: -64} %{!mno-abicalls:-KPIC}" 123 124/* The MIPS assembler has different syntax for .set. We set it to 125 .dummy to trap any errors. */ 126#undef SET_ASM_OP 127#define SET_ASM_OP "\t.dummy\t" 128 129#undef ASM_OUTPUT_DEF 130#define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \ 131 do { \ 132 fputc ( '\t', FILE); \ 133 assemble_name (FILE, LABEL1); \ 134 fputs ( " = ", FILE); \ 135 assemble_name (FILE, LABEL2); \ 136 fputc ( '\n', FILE); \ 137 } while (0) 138 139#undef ASM_DECLARE_FUNCTION_NAME 140#define ASM_DECLARE_FUNCTION_NAME(STREAM, NAME, DECL) \ 141 do { \ 142 if (!flag_inhibit_size_directive) \ 143 { \ 144 fputs ("\t.ent\t", STREAM); \ 145 assemble_name (STREAM, NAME); \ 146 putc ('\n', STREAM); \ 147 } \ 148 ASM_OUTPUT_TYPE_DIRECTIVE (STREAM, NAME, "function"); \ 149 assemble_name (STREAM, NAME); \ 150 fputs (":\n", STREAM); \ 151 } while (0) 152 153#undef ASM_DECLARE_FUNCTION_SIZE 154#define ASM_DECLARE_FUNCTION_SIZE(STREAM, NAME, DECL) \ 155 do { \ 156 if (!flag_inhibit_size_directive) \ 157 { \ 158 fputs ("\t.end\t", STREAM); \ 159 assemble_name (STREAM, NAME); \ 160 putc ('\n', STREAM); \ 161 } \ 162 } while (0) 163 164/* Tell function_prologue in mips.c that we have already output the .ent/.end 165 pseudo-ops. */ 166#undef FUNCTION_NAME_ALREADY_DECLARED 167#define FUNCTION_NAME_ALREADY_DECLARED 1 168 169/* The glibc _mcount stub will save $v0 for us. Don't mess with saving 170 it, since ASM_OUTPUT_REG_PUSH/ASM_OUTPUT_REG_POP do not work in the 171 presence of $gp-relative calls. */ 172#undef ASM_OUTPUT_REG_PUSH 173#undef ASM_OUTPUT_REG_POP 174 175#undef LIB_SPEC 176#define LIB_SPEC "\ 177%{shared: -lc} \ 178%{!shared: %{pthread:-lpthread} \ 179 %{profile:-lc_p} %{!profile: -lc}}" 180 181#define MD_UNWIND_SUPPORT "config/mips/linux-unwind.h" 182