1/* Definitions of target machine for GNU compiler. Iris version 5. 2 Copyright (C) 1993, 1995, 1996, 1998 Free Software Foundation, Inc. 3 4This file is part of GNU CC. 5 6GNU CC is free software; you can redistribute it and/or modify 7it under the terms of the GNU General Public License as published by 8the Free Software Foundation; either version 2, or (at your option) 9any later version. 10 11GNU CC is distributed in the hope that it will be useful, 12but WITHOUT ANY WARRANTY; without even the implied warranty of 13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14GNU General Public License for more details. 15 16You should have received a copy of the GNU General Public License 17along with GNU CC; see the file COPYING. If not, write to 18the Free Software Foundation, 59 Temple Place - Suite 330, 19Boston, MA 02111-1307, USA. */ 20 21#ifndef TARGET_DEFAULT 22#define TARGET_DEFAULT MASK_ABICALLS 23#endif 24#define ABICALLS_ASM_OP ".option pic2" 25 26#include "mips/iris3.h" 27#include "mips/mips.h" 28#include "mips/iris4.h" 29 30/* Irix 5 doesn't use COFF, so disable special COFF handling in collect2.c. */ 31#undef OBJECT_FORMAT_COFF 32 33/* ??? This is correct, but not very useful, because there is no file that 34 uses this macro. */ 35/* ??? The best way to handle global constructors under ELF is to use .init 36 and .fini sections. Unfortunately, there is apparently no way to get 37 the Irix 5.x (x <= 2) assembler to create these sections. So we instead 38 use collect. The linker can create these sections via -init and -fini 39 options, but using this would require modifying how crtstuff works, and 40 I will leave that for another time (or someone else). */ 41#define OBJECT_FORMAT_ELF 42#define HAS_INIT_SECTION 43#define LD_INIT_SWITCH "-init" 44#define LD_FINI_SWITCH "-fini" 45 46/* Specify wchar_t types. */ 47#undef WCHAR_TYPE 48#undef WCHAR_TYPE_SIZE 49#undef MAX_WCHAR_TYPE_SIZE 50 51#define WCHAR_TYPE "long int" 52#define WCHAR_TYPE_SIZE LONG_TYPE_SIZE 53#define MAX_WCHAR_TYPE_SIZE MAX_LONG_TYPE_SIZE 54 55#define WORD_SWITCH_TAKES_ARG(STR) \ 56 (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) \ 57 || !strcmp (STR, "rpath")) 58 59#undef SUBTARGET_CC1_SPEC 60#define SUBTARGET_CC1_SPEC "%{static: -mno-abicalls}" 61 62/* ??? _MIPS_SIM and _MIPS_SZPTR should eventually depend on options when 63 options for them exist. */ 64 65#undef CPP_PREDEFINES 66#define CPP_PREDEFINES \ 67 "-Dunix -Dmips -Dsgi -Dhost_mips -DMIPSEB -D_MIPSEB -DSYSTYPE_SVR4 \ 68 -D_SVR4_SOURCE -D_MODERN_C -D__DSO__ \ 69 -D_MIPS_SIM=_MIPS_SIM_ABI32 -D_MIPS_SZPTR=32 \ 70 -Asystem(unix) -Asystem(svr4) -Acpu(mips) -Amachine(sgi)" 71 72#undef SUBTARGET_CPP_SPEC 73#define SUBTARGET_CPP_SPEC "\ 74%{!ansi:-D__EXTENSIONS__ -D_SGI_SOURCE -D_LONGLONG} \ 75%{!mfp64: -D_MIPS_FPSET=16}%{mfp64: -D_MIPS_FPSET=32} \ 76%{mips1: -D_MIPS_ISA=_MIPS_ISA_MIPS1} \ 77%{mips2: -D_MIPS_ISA=_MIPS_ISA_MIPS2} \ 78%{mips3: -D_MIPS_ISA=_MIPS_ISA_MIPS3} \ 79%{!mips1: %{!mips2: %{!mips3: -D_MIPS_ISA=_MIPS_ISA_MIPS1}}} \ 80%{!mint64: -D_MIPS_SZINT=32}%{mint64: -D_MIPS_SZINT=64} \ 81%{!mlong64: -D_MIPS_SZLONG=32}%{mlong64: -D_MIPS_SZLONG=64}" 82 83#undef LINK_SPEC 84#define LINK_SPEC "\ 85%{G*} %{EB} %{EL} %{mips1} %{mips2} %{mips3} \ 86%{bestGnum} %{shared} %{non_shared} \ 87%{call_shared} %{no_archive} %{exact_version} \ 88%{static: -non_shared} \ 89%{!static: \ 90 %{!shared:%{!non_shared:%{!call_shared: -call_shared -no_unresolved}}}} \ 91%{rpath} \ 92-_SYSTYPE_SVR4" 93 94/* We now support shared libraries. */ 95#undef STARTFILE_SPEC 96#define STARTFILE_SPEC "\ 97%{!static: \ 98 %{!shared:%{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s libprof1.a%s}%{!p:crt1.o%s}}}} \ 99%{static: \ 100 %{pg:gcrt1.o%s} \ 101 %{!pg:%{p:/usr/lib/nonshared/mcrt1.o%s libprof1.a%s} \ 102 %{!p:/usr/lib/nonshared/crt1.o%s}}}" 103 104#undef LIB_SPEC 105#define LIB_SPEC "%{!shared:%{p:-lprof1} %{pg:-lprof1} -lc}" 106 107#undef ENDFILE_SPEC 108#define ENDFILE_SPEC "%{!shared:crtn.o%s}" 109 110/* We do not want to run mips-tfile! */ 111#undef ASM_FINAL_SPEC 112 113/* The system header files are C++ aware. */ 114/* ??? Unfortunately, most but not all of the headers are C++ aware. 115 Specifically, curses.h is not, and as a consequence, defining this 116 used to prevent libg++ building. This is no longer the case so 117 define it again to prevent other problems, e.g. with getopt in 118 unistd.h. We still need some way to fix just those files that need 119 fixing. */ 120#define NO_IMPLICIT_EXTERN_C 1 121 122/* We don't support debugging info for now. */ 123#undef DBX_DEBUGGING_INFO 124#undef SDB_DEBUGGING_INFO 125#undef MIPS_DEBUGGING_INFO 126#undef PREFERRED_DEBUGGING_TYPE 127 128/* Likewise, the assembler doesn't handle DWARF2 directives. */ 129#define DWARF2_UNWIND_INFO 0 130 131#undef MACHINE_TYPE 132#define MACHINE_TYPE "SGI running IRIX 5.x" 133 134 /* Dollar signs are OK in Irix5 but not in Irix3. */ 135#undef DOLLARS_IN_IDENTIFIERS 136#undef NO_DOLLAR_IN_LABEL 137 138/* -G is incompatible with -KPIC which is the default, so only allow objects 139 in the small data section if the user explicitly asks for it. */ 140#undef MIPS_DEFAULT_GVALUE 141#define MIPS_DEFAULT_GVALUE 0 142 143/* In Irix 5, we must output a `.global name .text' directive for every used 144 but undefined function. If we don't, the linker may perform an optimization 145 (skipping over the insns that set $gp) when it is unsafe. This is used 146 indirectly by ASM_OUTPUT_EXTERNAL. */ 147#define ASM_OUTPUT_UNDEF_FUNCTION(FILE, NAME) \ 148do { \ 149 fputs ("\t.globl ", FILE); \ 150 assemble_name (FILE, NAME); \ 151 fputs (" .text\n", FILE); \ 152} while (0) 153 154/* Also do this for libcalls. */ 155#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \ 156 mips_output_external_libcall (FILE, XSTR (FUN, 0)) 157 158/* This does for functions what ASM_DECLARE_OBJECT_NAME does for variables. 159 This is used indirectly by ASM_OUTPUT_EXTERNAL. */ 160#define ASM_DECLARE_FUNCTION_SIZE(STREAM, NAME, DECL) \ 161do { \ 162 tree name_tree = get_identifier (NAME); \ 163 TREE_ASM_WRITTEN (name_tree) = 1; \ 164} while (0) 165