1 /* Definitions of target machine for GNU compiler. Iris version 5.
2 Copyright (C) 1993 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU CC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU CC; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
20 #define TARGET_DEFAULT MASK_ABICALLS
21 #define ABICALLS_ASM_OP ".option pic2"
23 #include "mips/iris4.h"
25 /* Irix 5 doesn't use COFF, so disable special COFF handling in collect2.c. */
26 #undef OBJECT_FORMAT_COFF
28 /* ??? This is correct, but not very useful, because there is no file that
30 /* ??? The best way to handle global constructors under ELF is to use .init
31 and .fini sections. Unfortunately, there is apparently no way to get
32 the Irix 5.x (x <= 2) assembler to create these sections. So we instead
33 use collect. The linker can create these sections via -init and -fini
34 options, but using this would require modifying how crtstuff works, and
35 I will leave that for another time (or someone else). */
36 #define OBJECT_FORMAT_ELF
38 /* Specify wchar_t types. */
40 #undef WCHAR_TYPE_SIZE
41 #undef MAX_WCHAR_TYPE_SIZE
43 #define WCHAR_TYPE "long int"
44 #define WCHAR_TYPE_SIZE LONG_TYPE_SIZE
45 #define MAX_WCHAR_TYPE_SIZE MAX_LONG_TYPE_SIZE
47 /* ??? _MIPS_SIM and _MIPS_SZPTR should eventually depend on options when
48 options for them exist. */
51 #define CPP_PREDEFINES \
52 "-Dunix -Dmips -Dsgi -Dhost_mips -DMIPSEB -D_MIPSEB -DSYSTYPE_SVR4 \
53 -D_SVR4_SOURCE -D_MODERN_C -D__DSO__ \
54 -D_MIPS_SIM=_MIPS_SIM_ABI32 -D_MIPS_SZPTR=32 \
55 -Asystem(unix) -Asystem(svr4) -Acpu(mips) -Amachine(sgi)"
59 %{!ansi:-D__EXTENSIONS__ -D_SGI_SOURCE -D_LONGLONG} \
60 %{.cc: -D_LANGUAGE_C_PLUS_PLUS} \
61 %{.cxx: -D_LANGUAGE_C_PLUS_PLUS} \
62 %{.C: -D_LANGUAGE_C_PLUS_PLUS} \
63 %{.m: -D_LANGUAGE_OBJECTIVE_C -D_LANGUAGE_C} \
64 %{.S: -D_LANGUAGE_ASSEMBLY %{!ansi:-DLANGUAGE_ASSEMBLY}} \
65 %{.s: -D_LANGUAGE_ASSEMBLY %{!ansi:-DLANGUAGE_ASSEMBLY}} \
66 %{!.S:%{!.s: %{!.cc: %{!.cxx: %{!.C: %{!.m: -D_LANGUAGE_C %{!ansi:-DLANGUAGE_C}}}}}}}\
67 %{!mfp64: -D_MIPS_FPSET=16}%{mfp64: -D_MIPS_FPSET=32} \
68 %{mips1: -D_MIPS_ISA=_MIPS_ISA_MIPS1} \
69 %{mips2: -D_MIPS_ISA=_MIPS_ISA_MIPS2} \
70 %{mips3: -D_MIPS_ISA=_MIPS_ISA_MIPS3} \
71 %{!mips1: %{!mips2: %{!mips3: -D_MIPS_ISA=_MIPS_ISA_MIPS1}}} \
72 %{!mint64: -D_MIPS_SZINT=32}%{mint64: -D_MIPS_SZINT=64} \
73 %{!mlong64: -D_MIPS_SZLONG=32}%{mlong64: -D_MIPS_SZLONG=64} \
74 %{mlong64:-D__SIZE_TYPE__=long\\ unsigned\\ int -D__PTRDIFF_TYPE__=long\\ int} \
75 %{!mlong64:-D__SIZE_TYPE__=unsigned\\ int -D__PTRDIFF_TYPE__=int} \
76 %{mips3:-U__mips -D__mips=3} \
77 %{EB:-UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__ -D_MIPSEB -D__MIPSEB -D__MIPSEB__ %{!ansi:-DMIPSEB}} \
78 %{EL:-UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__ -D_MIPSEL -D__MIPSEL -D__MIPSEL__ %{!ansi:-DMIPSEL}}"
82 %{G*} %{EB} %{EL} %{mips1} %{mips2} %{mips3} \
83 %{bestGnum} %{shared} %{non_shared} \
84 %{call_shared} %{no_archive} %{exact_version} \
85 %{!shared: %{!non_shared: \
86 %{!call_shared: -call_shared -no_unresolved}}} \
90 #define LIB_SPEC "%{p:-lprof1} %{pg:-lprof1} -lc crtn.o%s"
92 /* We do not want to run mips-tfile! */
95 /* The system header files are C++ aware. */
96 /* ??? Unfortunately, most but not all of the headers are C++ aware.
97 Specifically, curses.h is not, and libg++ won't build because of it
98 if this is defined. On the other hand, SGI has C++ packages with
99 header files in /usr/include, and they won't work unless this is
100 defined. We need some way to fix just those files that need fixing. */
101 /* #define NO_IMPLICIT_EXTERN_C 1 */
103 /* We don't support debugging info for now. */
104 #undef DBX_DEBUGGING_INFO
105 #undef SDB_DEBUGGING_INFO
106 #undef MIPS_DEBUGGING_INFO
109 #define MACHINE_TYPE "SGI running IRIX 5.0"
111 /* -G is incompatible with -KPIC which is the default, so only allow objects
112 in the small data section if the user explicitly asks for it. */
113 #undef MIPS_DEFAULT_GVALUE
114 #define MIPS_DEFAULT_GVALUE 0
116 /* In Irix 5, we must output a `.global name .text' directive for every used
117 but undefined function. If we don't, the linker may perform an optimization
118 (skipping over the insns that set $gp) when it is unsafe. This is used
119 indirectly by ASM_OUTPUT_EXTERNAL. */
120 #define ASM_OUTPUT_UNDEF_FUNCTION(FILE, NAME) \
122 fputs ("\t.globl ", FILE); \
123 assemble_name (FILE, NAME); \
124 fputs (" .text\n", FILE); \
127 /* Also do this for libcalls. */
128 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
129 mips_output_external_libcall (FILE, XSTR (FUN, 0))
131 /* This does for functions what ASM_DECLARE_OBJECT_NAME does for variables.
132 This is used indirectly by ASM_OUTPUT_EXTERNAL. */
133 #define ASM_DECLARE_FUNCTION_SIZE(STREAM, NAME, DECL) \
135 tree name_tree = get_identifier (NAME); \
136 TREE_ASM_WRITTEN (name_tree) = 1; \