1 /* Definitions of target machine for GNU compiler. Iris version 5. 2 Copyright (C) 1993, 1995, 1996, 1998, 2000, 3 2001, 2002 Free Software Foundation, Inc. 4 5 This file is part of GNU CC. 6 7 GNU CC 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 GNU CC 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 GNU CC; see the file COPYING. If not, write to 19 the Free Software Foundation, 59 Temple Place - Suite 330, 20 Boston, MA 02111-1307, USA. */ 21 22 #define TARGET_IRIX5 1 23 24 #ifndef TARGET_DEFAULT 25 #define TARGET_DEFAULT MASK_ABICALLS 26 #endif 27 #define ABICALLS_ASM_OP "\t.option pic2" 28 29 #include "mips/iris3.h" 30 #include "mips/mips.h" 31 #include "mips/iris4.h" 32 33 /* Irix 5 doesn't use COFF, so disable special COFF handling in collect2.c. */ 34 #undef OBJECT_FORMAT_COFF 35 36 /* ??? This is correct, but not very useful, because there is no file that 37 uses this macro. */ 38 /* ??? The best way to handle global constructors under ELF is to use .init 39 and .fini sections. Unfortunately, there is apparently no way to get 40 the Irix 5.x (x <= 2) assembler to create these sections. So we instead 41 use collect. The linker can create these sections via -init and -fini 42 options, but using this would require modifying how crtstuff works, and 43 I will leave that for another time (or someone else). */ 44 #define OBJECT_FORMAT_ELF 45 #define HAS_INIT_SECTION 46 #define LD_INIT_SWITCH "-init" 47 #define LD_FINI_SWITCH "-fini" 48 49 /* The linker needs a space after "-o". */ 50 #define SWITCHES_NEED_SPACES "o" 51 52 /* Specify wchar_t types. */ 53 #undef WCHAR_TYPE 54 #undef WCHAR_TYPE_SIZE 55 #undef MAX_WCHAR_TYPE_SIZE 56 57 #define WCHAR_TYPE "int" 58 #define WCHAR_TYPE_SIZE INT_TYPE_SIZE 59 #define MAX_WCHAR_TYPE_SIZE 64 60 61 #define WORD_SWITCH_TAKES_ARG(STR) \ 62 (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) \ 63 || !strcmp (STR, "rpath")) 64 65 #define TARGET_OS_CPP_BUILTINS() \ 66 do { \ 67 builtin_define_std ("host_mips"); \ 68 builtin_define_std ("sgi"); \ 69 builtin_define_std ("unix"); \ 70 builtin_define_std ("SYSTYPE_SVR4"); \ 71 builtin_define ("_MODERN_C"); \ 72 builtin_define ("_SVR4_SOURCE"); \ 73 builtin_define ("__DSO__"); \ 74 builtin_define ("_MIPS_SIM=_MIPS_SIM_ABI32"); \ 75 builtin_define ("_MIPS_SZPTR=32"); \ 76 builtin_assert ("system=unix"); \ 77 builtin_assert ("system=svr4"); \ 78 builtin_assert ("machine=sgi"); \ 79 \ 80 if (!TARGET_FLOAT64) \ 81 builtin_define ("_MIPS_FPSET=16"); \ 82 else \ 83 builtin_define ("_MIPS_FPSET=32"); \ 84 \ 85 if (!TARGET_INT64) \ 86 builtin_define ("_MIPS_SZINT=32"); \ 87 else \ 88 builtin_define ("_MIPS_SZINT=64"); \ 89 \ 90 if (!TARGET_LONG64) \ 91 builtin_define ("_MIPS_SZLONG=32"); \ 92 else \ 93 builtin_define ("_MIPS_SZLONG=64"); \ 94 \ 95 if (!flag_iso) \ 96 { \ 97 builtin_define ("__EXTENSIONS__"); \ 98 builtin_define ("_SGI_SOURCE"); \ 99 } \ 100 } while (0); 101 102 #undef SUBTARGET_CC1_SPEC 103 #define SUBTARGET_CC1_SPEC "%{static: -mno-abicalls}" 104 105 #undef LINK_SPEC 106 #define LINK_SPEC "\ 107 %{G*} %{EB} %{EL} %{mips1} %{mips2} %{mips3} \ 108 %{bestGnum} %{shared} %{non_shared} \ 109 %{call_shared} %{no_archive} %{exact_version} \ 110 %{static: -non_shared} \ 111 %{!static: \ 112 %{!shared:%{!non_shared:%{!call_shared: -call_shared -no_unresolved}}}} \ 113 %{rpath} \ 114 -_SYSTYPE_SVR4" 115 116 /* We now support shared libraries. */ 117 #undef STARTFILE_SPEC 118 #define STARTFILE_SPEC "\ 119 %{!static: \ 120 %{!shared:%{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s libprof1.a%s}%{!p:crt1.o%s}}}} \ 121 %{static: \ 122 %{pg:gcrt1.o%s} \ 123 %{!pg:%{p:/usr/lib/nonshared/mcrt1.o%s libprof1.a%s} \ 124 %{!p:/usr/lib/nonshared/crt1.o%s}}}" 125 126 #undef LIB_SPEC 127 #define LIB_SPEC "%{!shared:%{p:-lprof1} %{pg:-lprof1} -lc}" 128 129 #undef ENDFILE_SPEC 130 #define ENDFILE_SPEC "%{!shared:crtn.o%s}" 131 132 /* We do not want to run mips-tfile! */ 133 #undef ASM_FINAL_SPEC 134 135 /* The system header files are C++ aware. */ 136 /* ??? Unfortunately, most but not all of the headers are C++ aware. 137 Specifically, curses.h is not, and as a consequence, defining this 138 used to prevent libg++ building. This is no longer the case so 139 define it again to prevent other problems, e.g. with getopt in 140 unistd.h. We still need some way to fix just those files that need 141 fixing. */ 142 #define NO_IMPLICIT_EXTERN_C 1 143 144 /* We don't support debugging info for now. */ 145 #undef DBX_DEBUGGING_INFO 146 #undef SDB_DEBUGGING_INFO 147 #undef MIPS_DEBUGGING_INFO 148 #undef PREFERRED_DEBUGGING_TYPE 149 150 /* Likewise, the assembler doesn't handle DWARF2 directives. */ 151 #define DWARF2_UNWIND_INFO 0 152 153 #undef MACHINE_TYPE 154 #define MACHINE_TYPE "SGI running IRIX 5.x" 155 156 /* Dollar signs are OK in Irix5 but not in Irix3. */ 157 #undef DOLLARS_IN_IDENTIFIERS 158 #undef NO_DOLLAR_IN_LABEL 159 160 /* -G is incompatible with -KPIC which is the default, so only allow objects 161 in the small data section if the user explicitly asks for it. */ 162 #undef MIPS_DEFAULT_GVALUE 163 #define MIPS_DEFAULT_GVALUE 0 164 165 /* In Irix 5, we must output a `.global name .text' directive for every used 166 but undefined function. If we don't, the linker may perform an optimization 167 (skipping over the insns that set $gp) when it is unsafe. This is used 168 indirectly by ASM_OUTPUT_EXTERNAL. */ 169 #define ASM_OUTPUT_UNDEF_FUNCTION(FILE, NAME) \ 170 do { \ 171 fputs ("\t.globl ", FILE); \ 172 assemble_name (FILE, NAME); \ 173 fputs (" .text\n", FILE); \ 174 } while (0) 175 176 /* Also do this for libcalls. */ 177 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \ 178 mips_output_external_libcall (FILE, XSTR (FUN, 0)) 179 180 /* This does for functions what ASM_DECLARE_OBJECT_NAME does for variables. 181 This is used indirectly by ASM_OUTPUT_EXTERNAL. */ 182 #define ASM_DECLARE_FUNCTION_SIZE(STREAM, NAME, DECL) \ 183 do { \ 184 tree name_tree = get_identifier (NAME); \ 185 TREE_ASM_WRITTEN (name_tree) = 1; \ 186 } while (0) 187 188 /* This is how we tell the assembler that a symbol is weak. */ 189 190 #define ASM_OUTPUT_WEAK_ALIAS(FILE, NAME, VALUE) \ 191 do \ 192 { \ 193 (*targetm.asm_out.globalize_label) (FILE, NAME); \ 194 fputs ("\t.weakext\t", FILE); \ 195 assemble_name (FILE, NAME); \ 196 if (VALUE) \ 197 { \ 198 fputc (' ', FILE); \ 199 assemble_name (FILE, VALUE); \ 200 } \ 201 fputc ('\n', FILE); \ 202 } \ 203 while (0) 204 205 #define ASM_WEAKEN_LABEL(FILE, NAME) ASM_OUTPUT_WEAK_ALIAS(FILE, NAME, 0) 206 207 /* Handle #pragma weak and #pragma pack. */ 208 #define HANDLE_SYSV_PRAGMA 1 209