1 /* Definitions of target machine for GNU compiler. IRIX 6.5 version.
2 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 2000,
3 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
4 Free Software Foundation, Inc.
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3, or (at your option)
13 GCC is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
22 /* We are compiling for IRIX 6 now. */
24 #define TARGET_IRIX6 1
26 /* Default to -mabi=n32 and -mips3. */
27 #undef MULTILIB_DEFAULTS
28 #define MULTILIB_DEFAULTS { "mabi=n32" }
30 /* -march=native handling only makes sense with compiler running on
33 extern const char *host_detect_local_cpu (int argc, const char **argv);
34 # define EXTRA_SPEC_FUNCTIONS \
35 { "local_cpu_detect", host_detect_local_cpu },
37 # define MARCH_MTUNE_NATIVE_SPECS \
38 " %{march=native:%<march=native %:local_cpu_detect(arch)}" \
39 " %{mtune=native:%<mtune=native %:local_cpu_detect(tune)}"
41 # define MARCH_MTUNE_NATIVE_SPECS ""
44 /* Force the default ABI onto the command line in order to make the specs
46 #undef DRIVER_SELF_SPECS
47 #define DRIVER_SELF_SPECS \
48 "%{!mabi=*: -mabi=n32}", \
49 /* Configuration-independent MIPS rules. */ \
50 BASE_DRIVER_SELF_SPECS, \
51 MARCH_MTUNE_NATIVE_SPECS
53 /* IRIX 6.5 has the float and long double forms of math functions. */
54 #define TARGET_C99_FUNCTIONS 1
56 /* MIPS specific debugging info */
57 #define MIPS_DEBUGGING_INFO 1
59 /* Force the generation of dwarf .debug_frame sections even if not
60 compiling -g. This guarantees that we can unwind the stack. */
61 #define DWARF2_FRAME_INFO 1
63 /* The system unwinder in libexc requires a specific dwarf return address
65 #undef DWARF_FRAME_RETURN_COLUMN
66 #define DWARF_FRAME_RETURN_COLUMN (FP_REG_LAST + 1)
68 /* The size in bytes of a DWARF field indicating an offset or length
69 relative to a debug info section, specified to be 4 bytes in the DWARF-2
70 specification. The SGI/MIPS ABI defines it to be the same as PTR_SIZE. */
71 #define DWARF_OFFSET_SIZE PTR_SIZE
73 /* The size in bytes of the initial length field in a debug info
74 section. The DWARF 3 (draft) specification defines this to be
75 either 4 or 12 (with a 4-byte "escape" word when it's 12), but the
76 SGI/MIPS ABI predates this standard and defines it to be the same
77 as DWARF_OFFSET_SIZE. */
78 #define DWARF_INITIAL_LENGTH_SIZE DWARF_OFFSET_SIZE
80 /* MIPS assemblers don't have the usual .set foo,bar construct;
81 .set is used for assembler options instead. */
83 #define ASM_OUTPUT_DEF(FILE, LABEL1, LABEL2) \
87 assemble_name (FILE, LABEL1); \
88 fputs (" = ", FILE); \
89 assemble_name (FILE, LABEL2); \
94 #undef LOCAL_LABEL_PREFIX
95 #define LOCAL_LABEL_PREFIX "."
97 #undef ASM_DECLARE_OBJECT_NAME
98 #define ASM_DECLARE_OBJECT_NAME mips_declare_object_name
100 #undef ASM_FINISH_DECLARE_OBJECT
101 #define ASM_FINISH_DECLARE_OBJECT mips_finish_declare_object
103 /* The native IRIX 6 linker does not support merging without a special
105 #ifndef IRIX_USING_GNU_LD
106 #undef HAVE_GAS_SHF_MERGE
107 #define HAVE_GAS_SHF_MERGE 0
110 /* Specify wchar_t types. */
112 #define WCHAR_TYPE (Pmode == DImode ? "int" : "long int")
114 #undef WCHAR_TYPE_SIZE
115 #define WCHAR_TYPE_SIZE INT_TYPE_SIZE
117 /* Same for wint_t. */
119 #define WINT_TYPE (Pmode == DImode ? "int" : "long int")
121 #undef WINT_TYPE_SIZE
122 #define WINT_TYPE_SIZE INT_TYPE_SIZE
124 /* C99 stdint.h types. */
125 #define INT8_TYPE "signed char"
126 #define INT16_TYPE "short int"
127 #define INT32_TYPE "int"
128 #define INT64_TYPE "long long int"
129 #define UINT8_TYPE "unsigned char"
130 #define UINT16_TYPE "short unsigned int"
131 #define UINT32_TYPE "unsigned int"
132 #define UINT64_TYPE "long long unsigned int"
134 #define INT_LEAST8_TYPE "signed char"
135 #define INT_LEAST16_TYPE "short int"
136 #define INT_LEAST32_TYPE "int"
137 #define INT_LEAST64_TYPE "long long int"
138 #define UINT_LEAST8_TYPE "unsigned char"
139 #define UINT_LEAST16_TYPE "short unsigned int"
140 #define UINT_LEAST32_TYPE "unsigned int"
141 #define UINT_LEAST64_TYPE "long long unsigned int"
143 #define INT_FAST8_TYPE "signed char"
144 #define INT_FAST16_TYPE "short int"
145 #define INT_FAST32_TYPE "int"
146 #define INT_FAST64_TYPE "long long int"
147 #define UINT_FAST8_TYPE "unsigned char"
148 #define UINT_FAST16_TYPE "short unsigned int"
149 #define UINT_FAST32_TYPE "unsigned int"
150 #define UINT_FAST64_TYPE "long long unsigned int"
152 #define INTMAX_TYPE "long long int"
153 #define UINTMAX_TYPE "long long unsigned int"
155 #define INTPTR_TYPE "long int"
156 #define UINTPTR_TYPE "long unsigned int"
158 #define SIG_ATOMIC_TYPE "int"
160 /* Plain char is unsigned in the SGI compiler. */
161 #undef DEFAULT_SIGNED_CHAR
162 #define DEFAULT_SIGNED_CHAR 0
164 #define TARGET_OS_CPP_BUILTINS() \
167 builtin_define_std ("host_mips"); \
168 builtin_define_std ("sgi"); \
169 builtin_define_std ("unix"); \
170 builtin_define_std ("SYSTYPE_SVR4"); \
171 builtin_define ("_MODERN_C"); \
172 builtin_define ("_SVR4_SOURCE"); \
173 builtin_define ("__DSO__"); \
174 builtin_assert ("system=unix"); \
175 builtin_assert ("system=svr4"); \
176 builtin_assert ("machine=sgi"); \
178 if (!ISA_MIPS1 && !ISA_MIPS2) \
179 builtin_define ("_COMPILER_VERSION=601"); \
181 /* We must always define _LONGLONG, even when -ansi is \
182 used, because IRIX 5 system header files require it. \
183 This is OK, because gcc never warns when long long \
184 is used in system header files. \
186 An alternative would be to support the SGI builtin \
187 type __long_long. */ \
188 builtin_define ("_LONGLONG"); \
190 /* IRIX 6.5.18 and above provide many ISO C99 \
191 features protected by the __c99 macro. \
192 libstdc++ v3 needs them as well. */ \
193 if (flag_isoc99 || c_dialect_cxx ()) \
194 builtin_define ("__c99"); \
196 /* The GNU C++ standard library requires that \
197 __EXTENSIONS__ and _SGI_SOURCE be defined on at \
198 least IRIX 6.2 and probably all IRIX 6 prior to 6.5. \
199 We don't need this on IRIX 6.5 itself, but it \
200 shouldn't hurt other than the namespace pollution. */ \
201 if (!flag_iso || c_dialect_cxx ()) \
203 builtin_define ("__EXTENSIONS__"); \
204 builtin_define ("_SGI_SOURCE"); \
209 #undef SUBTARGET_CC1_SPEC
210 #define SUBTARGET_CC1_SPEC "%{static: -mno-abicalls}"
212 #undef SUBTARGET_CPP_SPEC
213 #define SUBTARGET_CPP_SPEC "%{pthread:-D_REENTRANT}"
215 #undef INIT_SECTION_ASM_OP
216 #define INIT_SECTION_ASM_OP "\t.section\t.gcc_init,\"ax\",@progbits"
218 #undef FINI_SECTION_ASM_OP
219 #define FINI_SECTION_ASM_OP "\t.section\t.gcc_fini,\"ax\",@progbits"
221 #ifdef IRIX_USING_GNU_LD
222 #define IRIX_NO_UNRESOLVED ""
224 #define IRIX_NO_UNRESOLVED "-no_unresolved"
227 #ifdef IRIX_USING_GNU_LD
228 #define SUBTARGET_DONT_WARN_UNUSED_SPEC ""
229 #define SUBTARGET_WARN_UNUSED_SPEC ""
231 #define SUBTARGET_DONT_WARN_UNUSED_SPEC "-dont_warn_unused"
232 #define SUBTARGET_WARN_UNUSED_SPEC "-warn_unused"
235 /* Profiling is supported via libprof1.a not -lc_p as in IRIX 3. */
236 #undef STARTFILE_SPEC
237 #define STARTFILE_SPEC \
240 %{mips4:%{pg:/usr/lib32/mips4/gcrt1.o%s} \
241 %{!pg:%{p:/usr/lib32/mips4/mcrt1.o%s /usr/lib32/mips4/libprof1.a%s} \
242 %{!p:/usr/lib32/mips4/crt1.o%s}}} \
243 %{!mips4:%{pg:/usr/lib32/mips3/gcrt1.o%s} \
244 %{!pg:%{p:/usr/lib32/mips3/mcrt1.o%s /usr/lib32/mips3/libprof1.a%s} \
245 %{!p:/usr/lib32/mips3/crt1.o%s}}}} \
247 %{mips4:%{pg:/usr/lib64/mips4/gcrt1.o} \
248 %{!pg:%{p:/usr/lib64/mips4/mcrt1.o /usr/lib64/mips4/libprof1.a} \
249 %{!p:/usr/lib64/mips4/crt1.o}}} \
250 %{!mips4:%{pg:/usr/lib64/mips3/gcrt1.o} \
251 %{!pg:%{p:/usr/lib64/mips3/mcrt1.o /usr/lib64/mips3/libprof1.a} \
252 %{!p:/usr/lib64/mips3/crt1.o}}}}} \
253 irix-crti.o%s crtbegin.o%s"
257 "%{mabi=n32: %{mips4:-L/usr/lib32/mips4} %{!mips4:-L/usr/lib32/mips3} \
259 %{mabi=64: %{mips4:-L/usr/lib64/mips4} %{!mips4:-L/usr/lib64/mips3} \
262 SUBTARGET_DONT_WARN_UNUSED_SPEC \
263 " %{pthread:-lpthread} %{p:libprof1.a%s}%{pg:libprof1.a%s} -lc " \
264 SUBTARGET_WARN_UNUSED_SPEC "}"
266 /* Avoid getting two warnings for libgcc.a everytime we link. libgcc.a
267 contains references to copysignl, so link with libm to resolve them. */
269 #define LIBGCC_SPEC \
270 SUBTARGET_DONT_WARN_UNUSED_SPEC " -lgcc -lm " SUBTARGET_WARN_UNUSED_SPEC
273 #define ENDFILE_SPEC \
274 "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
275 crtend.o%s irix-crtn.o%s \
277 %{mabi=n32:%{mips4:/usr/lib32/mips4/crtn.o%s}\
278 %{!mips4:/usr/lib32/mips3/crtn.o%s}}\
279 %{mabi=64:%{mips4:/usr/lib64/mips4/crtn.o%s}\
280 %{!mips4:/usr/lib64/mips3/crtn.o%s}}}"
282 /* Generic part of the LINK_SPEC. */
285 %{G*} %{EB} %{EL} %{mips1} %{mips2} %{mips3} %{mips4} \
286 %{bestGnum} %{shared} %{non_shared} \
287 %{call_shared} %{no_archive} %{exact_version} \
289 %{!non_shared: %{!call_shared:%{!r: -call_shared " IRIX_NO_UNRESOLVED "}}}} \
290 %{rpath} %{!r: -init __gcc_init -fini __gcc_fini} " IRIX_SUBTARGET_LINK_SPEC
292 #ifdef IRIX_USING_GNU_LD
293 #define IRIX_SUBTARGET_LINK_SPEC \
294 "%{mabi=n32: -melf32bmipn32}%{mabi=64: -melf64bmip}"
296 /* Explicitly hide crt symbols that would normally be marked with
297 a "hidden" visibility attribute.
299 We have traditionally disabled this attribute when using the
300 native linker because the native linker's visibility support is
301 not fully-compatible with the GNU linker's. In particular, the
302 native linker does not pull in archive objects purely to resolve
303 references to the object's hidden symbols, whereas the GNU
306 The gcc build system currently hides symbols in some static
307 libraries (typically libgcov.a or libgcc.a) whenever visibility
308 attributes are supported. On targets with GNU semantics, this
309 makes sure that uses of libx.so symbols in one dynamic object are
310 not resolved to libx.a symbols in another dynamic object. But
311 on targets with IRIX semantics, hiding the symbols prevents the
312 static archive from working at all.
314 It would probably be better to enable visiblity attributes for
315 IRIX ld and disable the static archives versioning. It shouldn't
316 make anything worse, since libx.a symbols are global by default
317 anyway. However, no-one has volunteered to do this yet. */
319 #define IRIX_SUBTARGET_LINK_SPEC \
320 "%{w} -_SYSTYPE_SVR4 -woff 131 \
321 %{shared:-hidden_symbol __dso_handle} \
322 %{mabi=n32: -n32}%{mabi=64: -64}%{!mabi*: -n32}"
325 /* A linker error can empirically be avoided by removing duplicate
326 library search directories. */
327 #define LINK_ELIMINATE_DUPLICATE_LDIRECTORIES 1
329 /* The SGI linker doesn't understand constructor priorities. */
330 #ifndef IRIX_USING_GNU_LD
331 #define SUPPORTS_INIT_PRIORITY 0
334 /* Add -g to mips.h default to avoid confusing gas with local symbols
335 generated from stabs info. */
337 #define NM_FLAGS "-Bng"
339 /* The system header files are C++ aware. */
340 /* ??? Unfortunately, most but not all of the headers are C++ aware.
341 Specifically, curses.h is not, and as a consequence, defining this
342 used to prevent libg++ building. This is no longer the case so
343 define it again to prevent other problems, e.g. with getopt in
344 unistd.h. We still need some way to fix just those files that need
346 #define NO_IMPLICIT_EXTERN_C 1
348 /* -G is incompatible with -KPIC which is the default, so only allow objects
349 in the small data section if the user explicitly asks for it. */
350 #undef MIPS_DEFAULT_GVALUE
351 #define MIPS_DEFAULT_GVALUE 0
353 #define MIPS_TFMODE_FORMAT mips_extended_format