1 /* Definitions of target machine for GNU compiler. Iris version 5.
2 Copyright (C) 1993, 1995, 1996, 1998, 2000,
3 2001 Free Software Foundation, Inc.
5 This file is part of GNU CC.
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)
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.
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. */
22 #ifndef TARGET_DEFAULT
23 #define TARGET_DEFAULT MASK_ABICALLS
25 #define ABICALLS_ASM_OP "\t.option pic2"
27 #include "mips/iris3.h"
28 #include "mips/mips.h"
29 #include "mips/iris4.h"
31 /* Irix 5 doesn't use COFF, so disable special COFF handling in collect2.c. */
32 #undef OBJECT_FORMAT_COFF
34 /* ??? This is correct, but not very useful, because there is no file that
36 /* ??? The best way to handle global constructors under ELF is to use .init
37 and .fini sections. Unfortunately, there is apparently no way to get
38 the Irix 5.x (x <= 2) assembler to create these sections. So we instead
39 use collect. The linker can create these sections via -init and -fini
40 options, but using this would require modifying how crtstuff works, and
41 I will leave that for another time (or someone else). */
42 #define OBJECT_FORMAT_ELF
43 #define HAS_INIT_SECTION
44 #define LD_INIT_SWITCH "-init"
45 #define LD_FINI_SWITCH "-fini"
47 /* The linker needs a space after "-o". */
48 #define SWITCHES_NEED_SPACES "o"
50 /* Specify wchar_t types. */
52 #undef WCHAR_TYPE_SIZE
53 #undef MAX_WCHAR_TYPE_SIZE
55 #define WCHAR_TYPE "int"
56 #define WCHAR_TYPE_SIZE INT_TYPE_SIZE
57 #define MAX_WCHAR_TYPE_SIZE MAX_INT_TYPE_SIZE
59 #define WORD_SWITCH_TAKES_ARG(STR) \
60 (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) \
61 || !strcmp (STR, "rpath"))
63 #undef SUBTARGET_CC1_SPEC
64 #define SUBTARGET_CC1_SPEC "%{static: -mno-abicalls}"
66 /* ??? _MIPS_SIM and _MIPS_SZPTR should eventually depend on options when
67 options for them exist. */
70 #define CPP_PREDEFINES \
71 "-Dunix -Dmips -Dsgi -Dhost_mips -DMIPSEB -D_MIPSEB -DSYSTYPE_SVR4 \
72 -D_SVR4_SOURCE -D_MODERN_C -D__DSO__ \
73 -D_MIPS_SIM=_MIPS_SIM_ABI32 -D_MIPS_SZPTR=32 \
74 -Asystem=unix -Asystem=svr4 -Acpu=mips -Amachine=sgi"
76 #undef SUBTARGET_CPP_SPEC
77 #define SUBTARGET_CPP_SPEC "\
78 %{!ansi:-D__EXTENSIONS__ -D_SGI_SOURCE -D_LONGLONG} \
79 %{!mfp64: -D_MIPS_FPSET=16}%{mfp64: -D_MIPS_FPSET=32} \
80 %{mips1: -D_MIPS_ISA=_MIPS_ISA_MIPS1} \
81 %{mips2: -D_MIPS_ISA=_MIPS_ISA_MIPS2} \
82 %{mips3: -D_MIPS_ISA=_MIPS_ISA_MIPS3} \
83 %{!mips1: %{!mips2: %{!mips3: -D_MIPS_ISA=_MIPS_ISA_MIPS1}}} \
84 %{!mint64: -D_MIPS_SZINT=32}%{mint64: -D_MIPS_SZINT=64} \
85 %{!mlong64: -D_MIPS_SZLONG=32}%{mlong64: -D_MIPS_SZLONG=64}"
89 %{G*} %{EB} %{EL} %{mips1} %{mips2} %{mips3} \
90 %{bestGnum} %{shared} %{non_shared} \
91 %{call_shared} %{no_archive} %{exact_version} \
92 %{static: -non_shared} \
94 %{!shared:%{!non_shared:%{!call_shared: -call_shared -no_unresolved}}}} \
98 /* We now support shared libraries. */
100 #define STARTFILE_SPEC "\
102 %{!shared:%{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s libprof1.a%s}%{!p:crt1.o%s}}}} \
105 %{!pg:%{p:/usr/lib/nonshared/mcrt1.o%s libprof1.a%s} \
106 %{!p:/usr/lib/nonshared/crt1.o%s}}}"
109 #define LIB_SPEC "%{!shared:%{p:-lprof1} %{pg:-lprof1} -lc}"
112 #define ENDFILE_SPEC "%{!shared:crtn.o%s}"
114 /* We do not want to run mips-tfile! */
115 #undef ASM_FINAL_SPEC
117 /* The system header files are C++ aware. */
118 /* ??? Unfortunately, most but not all of the headers are C++ aware.
119 Specifically, curses.h is not, and as a consequence, defining this
120 used to prevent libg++ building. This is no longer the case so
121 define it again to prevent other problems, e.g. with getopt in
122 unistd.h. We still need some way to fix just those files that need
124 #define NO_IMPLICIT_EXTERN_C 1
126 /* We don't support debugging info for now. */
127 #undef DBX_DEBUGGING_INFO
128 #undef SDB_DEBUGGING_INFO
129 #undef MIPS_DEBUGGING_INFO
130 #undef PREFERRED_DEBUGGING_TYPE
132 /* Likewise, the assembler doesn't handle DWARF2 directives. */
133 #define DWARF2_UNWIND_INFO 0
136 #define MACHINE_TYPE "SGI running IRIX 5.x"
138 /* Dollar signs are OK in Irix5 but not in Irix3. */
139 #undef DOLLARS_IN_IDENTIFIERS
140 #undef NO_DOLLAR_IN_LABEL
142 /* -G is incompatible with -KPIC which is the default, so only allow objects
143 in the small data section if the user explicitly asks for it. */
144 #undef MIPS_DEFAULT_GVALUE
145 #define MIPS_DEFAULT_GVALUE 0
147 /* In Irix 5, we must output a `.global name .text' directive for every used
148 but undefined function. If we don't, the linker may perform an optimization
149 (skipping over the insns that set $gp) when it is unsafe. This is used
150 indirectly by ASM_OUTPUT_EXTERNAL. */
151 #define ASM_OUTPUT_UNDEF_FUNCTION(FILE, NAME) \
153 fputs ("\t.globl ", FILE); \
154 assemble_name (FILE, NAME); \
155 fputs (" .text\n", FILE); \
158 /* To get unaligned data, we have to turn off auto alignment. */
159 #define UNALIGNED_SHORT_ASM_OP "\t.align 0\n\t.half\t"
160 #define UNALIGNED_INT_ASM_OP "\t.align 0\n\t.word\t"
162 /* Also do this for libcalls. */
163 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
164 mips_output_external_libcall (FILE, XSTR (FUN, 0))
166 /* This does for functions what ASM_DECLARE_OBJECT_NAME does for variables.
167 This is used indirectly by ASM_OUTPUT_EXTERNAL. */
168 #define ASM_DECLARE_FUNCTION_SIZE(STREAM, NAME, DECL) \
170 tree name_tree = get_identifier (NAME); \
171 TREE_ASM_WRITTEN (name_tree) = 1; \