1 /* Definitions of target machine for GNU compiler. Generic IRIX version. 2 Copyright (C) 1993, 1995, 1996, 1998, 2000, 3 2001, 2002, 2003, 2004 Free Software Foundation, Inc. 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2, or (at your option) 10 any later version. 11 12 GCC is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with GCC; see the file COPYING. If not, write to 19 the Free Software Foundation, 51 Franklin Street, Fifth Floor, 20 Boston, MA 02110-1301, USA. */ 21 22 /* We are compiling for IRIX now. */ 23 #undef TARGET_IRIX 24 #define TARGET_IRIX 1 25 26 /* The size in bytes of a DWARF field indicating an offset or length 27 relative to a debug info section, specified to be 4 bytes in the DWARF-2 28 specification. The SGI/MIPS ABI defines it to be the same as PTR_SIZE. */ 29 #define DWARF_OFFSET_SIZE PTR_SIZE 30 31 /* The size in bytes of the initial length field in a debug info 32 section. The DWARF 3 (draft) specification defines this to be 33 either 4 or 12 (with a 4-byte "escape" word when it's 12), but the 34 SGI/MIPS ABI predates this standard and defines it to be the same 35 as DWARF_OFFSET_SIZE. */ 36 #define DWARF_INITIAL_LENGTH_SIZE DWARF_OFFSET_SIZE 37 38 /* MIPS assemblers don't have the usual .set foo,bar construct; 39 .set is used for assembler options instead. */ 40 #undef SET_ASM_OP 41 #define ASM_OUTPUT_DEF(FILE, LABEL1, LABEL2) \ 42 do \ 43 { \ 44 fputc ('\t', FILE); \ 45 assemble_name (FILE, LABEL1); \ 46 fputs (" = ", FILE); \ 47 assemble_name (FILE, LABEL2); \ 48 fputc ('\n', FILE); \ 49 } \ 50 while (0) 51 52 /* The MIPSpro o32 linker warns about not linking .comment sections. */ 53 #undef IDENT_ASM_OP 54 55 #undef LOCAL_LABEL_PREFIX 56 #define LOCAL_LABEL_PREFIX (TARGET_NEWABI ? "." : "$") 57 58 #undef ASM_DECLARE_OBJECT_NAME 59 #define ASM_DECLARE_OBJECT_NAME mips_declare_object_name 60 61 #undef ASM_FINISH_DECLARE_OBJECT 62 #define ASM_FINISH_DECLARE_OBJECT mips_finish_declare_object 63 64 /* Also do this for libcalls. */ 65 #undef TARGET_ASM_EXTERNAL_LIBCALL 66 #define TARGET_ASM_EXTERNAL_LIBCALL irix_output_external_libcall 67 68 /* The linker needs a space after "-o". */ 69 #define SWITCHES_NEED_SPACES "o" 70 71 /* Specify wchar_t types. */ 72 #undef WCHAR_TYPE 73 #define WCHAR_TYPE (Pmode == DImode ? "int" : "long int") 74 75 #undef WCHAR_TYPE_SIZE 76 #define WCHAR_TYPE_SIZE INT_TYPE_SIZE 77 78 /* Same for wint_t. */ 79 #undef WINT_TYPE 80 #define WINT_TYPE (Pmode == DImode ? "int" : "long int") 81 82 #undef WINT_TYPE_SIZE 83 #define WINT_TYPE_SIZE 32 84 85 /* Plain char is unsigned in the SGI compiler. */ 86 #undef DEFAULT_SIGNED_CHAR 87 #define DEFAULT_SIGNED_CHAR 0 88 89 #define WORD_SWITCH_TAKES_ARG(STR) \ 90 (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) \ 91 || strcmp (STR, "rpath") == 0) 92 93 #define TARGET_OS_CPP_BUILTINS() \ 94 do \ 95 { \ 96 builtin_define_std ("host_mips"); \ 97 builtin_define_std ("sgi"); \ 98 builtin_define_std ("unix"); \ 99 builtin_define_std ("SYSTYPE_SVR4"); \ 100 builtin_define ("_MODERN_C"); \ 101 builtin_define ("_SVR4_SOURCE"); \ 102 builtin_define ("__DSO__"); \ 103 builtin_assert ("system=unix"); \ 104 builtin_assert ("system=svr4"); \ 105 builtin_assert ("machine=sgi"); \ 106 \ 107 if (mips_abi == ABI_32) \ 108 { \ 109 builtin_define ("_ABIO32=1"); \ 110 builtin_define ("_MIPS_SIM=_ABIO32"); \ 111 builtin_define ("_MIPS_SZINT=32"); \ 112 builtin_define ("_MIPS_SZLONG=32"); \ 113 builtin_define ("_MIPS_SZPTR=32"); \ 114 } \ 115 else if (mips_abi == ABI_64) \ 116 { \ 117 builtin_define ("_ABI64=3"); \ 118 builtin_define ("_MIPS_SIM=_ABI64"); \ 119 builtin_define ("_MIPS_SZINT=32"); \ 120 builtin_define ("_MIPS_SZLONG=64"); \ 121 builtin_define ("_MIPS_SZPTR=64"); \ 122 } \ 123 else \ 124 { \ 125 builtin_define ("_ABIN32=2"); \ 126 builtin_define ("_MIPS_SIM=_ABIN32"); \ 127 builtin_define ("_MIPS_SZINT=32"); \ 128 builtin_define ("_MIPS_SZLONG=32"); \ 129 builtin_define ("_MIPS_SZPTR=32"); \ 130 } \ 131 \ 132 if (!ISA_MIPS1 && !ISA_MIPS2) \ 133 builtin_define ("_COMPILER_VERSION=601"); \ 134 \ 135 if (!TARGET_FLOAT64) \ 136 builtin_define ("_MIPS_FPSET=16"); \ 137 else \ 138 builtin_define ("_MIPS_FPSET=32"); \ 139 \ 140 /* We must always define _LONGLONG, even when -ansi is \ 141 used, because IRIX 5 system header files require it. \ 142 This is OK, because gcc never warns when long long \ 143 is used in system header files. \ 144 \ 145 An alternative would be to support the SGI builtin \ 146 type __long_long. */ \ 147 builtin_define ("_LONGLONG"); \ 148 \ 149 /* IRIX 6.5.18 and above provide many ISO C99 \ 150 features protected by the __c99 macro. \ 151 libstdc++ v3 needs them as well. */ \ 152 if (TARGET_IRIX6) \ 153 if (flag_isoc99 || c_dialect_cxx ()) \ 154 builtin_define ("__c99"); \ 155 \ 156 /* The GNU C++ standard library requires that \ 157 __EXTENSIONS__ and _SGI_SOURCE be defined on at \ 158 least IRIX 6.2 and probably all IRIX 6 prior to 6.5. \ 159 We don't need this on IRIX 6.5 itself, but it \ 160 shouldn't hurt other than the namespace pollution. */ \ 161 if (!flag_iso || (TARGET_IRIX6 && c_dialect_cxx ())) \ 162 { \ 163 builtin_define ("__EXTENSIONS__"); \ 164 builtin_define ("_SGI_SOURCE"); \ 165 } \ 166 } \ 167 while (0) 168 169 #undef SUBTARGET_CC1_SPEC 170 #define SUBTARGET_CC1_SPEC "%{static: -mno-abicalls}" 171 172 #undef INIT_SECTION_ASM_OP 173 #define INIT_SECTION_ASM_OP "\t.section\t.gcc_init,\"ax\",@progbits" 174 175 #undef FINI_SECTION_ASM_OP 176 #define FINI_SECTION_ASM_OP "\t.section\t.gcc_fini,\"ax\",@progbits" 177 178 #ifdef IRIX_USING_GNU_LD 179 #define IRIX_NO_UNRESOLVED "" 180 #else 181 #define IRIX_NO_UNRESOLVED "-no_unresolved" 182 #endif 183 184 /* Generic part of the LINK_SPEC. */ 185 #undef LINK_SPEC 186 #define LINK_SPEC "\ 187 %{G*} %{EB} %{EL} %{mips1} %{mips2} %{mips3} %{mips4} \ 188 %{bestGnum} %{shared} %{non_shared} \ 189 %{call_shared} %{no_archive} %{exact_version} \ 190 %{!shared: \ 191 %{!non_shared: %{!call_shared:%{!r: -call_shared " IRIX_NO_UNRESOLVED "}}}} \ 192 %{rpath} -init __gcc_init -fini __gcc_fini " IRIX_SUBTARGET_LINK_SPEC 193 194 /* A linker error can empirically be avoided by removing duplicate 195 library search directories. */ 196 #define LINK_ELIMINATE_DUPLICATE_LDIRECTORIES 1 197 198 /* Add -g to mips.h default to avoid confusing gas with local symbols 199 generated from stabs info. */ 200 #undef NM_FLAGS 201 #define NM_FLAGS "-Bng" 202 203 /* The system header files are C++ aware. */ 204 /* ??? Unfortunately, most but not all of the headers are C++ aware. 205 Specifically, curses.h is not, and as a consequence, defining this 206 used to prevent libg++ building. This is no longer the case so 207 define it again to prevent other problems, e.g. with getopt in 208 unistd.h. We still need some way to fix just those files that need 209 fixing. */ 210 #define NO_IMPLICIT_EXTERN_C 1 211 212 /* -G is incompatible with -KPIC which is the default, so only allow objects 213 in the small data section if the user explicitly asks for it. */ 214 #undef MIPS_DEFAULT_GVALUE 215 #define MIPS_DEFAULT_GVALUE 0 216 217 /* The native o32 IRIX linker does not support merging without a 218 special elspec(5) file. */ 219 #ifndef IRIX_USING_GNU_LD 220 #undef HAVE_GAS_SHF_MERGE 221 #define HAVE_GAS_SHF_MERGE 0 222 #endif 223