1 /* Definitions of target machine for GNU compiler. Iris version 6.
2 Copyright (C) 1994, 1995, 1996, 1997, 1998, 2000, 2001 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, 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
21 /* Default to -mabi=n32 and -mips3. */
22 #define MIPS_ISA_DEFAULT 3
23 #define MIPS_ABI_DEFAULT ABI_N32
24 #define MULTILIB_DEFAULTS { "mabi=n32" }
26 #ifndef TARGET_DEFAULT
27 #define TARGET_DEFAULT (MASK_ABICALLS|MASK_FLOAT64|MASK_64BIT)
30 #include "mips/iris5.h"
31 #include "mips/abi64.h"
33 /* Irix6 assembler does handle DWARF2 directives. Override setting in
35 #undef DWARF2_UNWIND_INFO
37 /* The Irix6 assembler will sometimes assign labels to the wrong
38 section unless the labels are within .ent/.end blocks. Therefore,
39 we avoid creating such labels. */
40 #define DWARF2_GENERATE_TEXT_SECTION_LABEL 0
42 /* wchar_t is defined differently with and without -mabi=64. */
44 #define NO_BUILTIN_WCHAR_TYPE
47 #define WCHAR_TYPE (Pmode == DImode ? "int" : "long int")
49 #undef WCHAR_TYPE_SIZE
50 #define WCHAR_TYPE_SIZE 32
52 /* Same for wint_t. */
54 #define NO_BUILTIN_WINT_TYPE
57 #define WINT_TYPE (Pmode == DImode ? "int" : "long int")
60 #define WINT_TYPE_SIZE 32
62 /* For Irix 6, -mabi=64 implies TARGET_LONG64. */
63 /* This is handled in override_options. */
65 #undef SUBTARGET_CC1_SPEC
66 #define SUBTARGET_CC1_SPEC ""
68 /* We must pass -D_LONGLONG always, even when -ansi is used, because irix6
69 system header files require it. This is OK, because gcc never warns
70 when long long is used in system header files. Alternatively, we can
71 add support for the SGI builtin type __long_long. */
73 #define CPP_PREDEFINES \
74 "-Dunix -Dmips -Dsgi -Dhost_mips -DMIPSEB -D_MIPSEB -DSYSTYPE_SVR4 \
75 -D_LONGLONG -D_SVR4_SOURCE -D_MODERN_C -D__DSO__ \
76 -Asystem=unix -Asystem=svr4 -Acpu=mips -Amachine=sgi"
78 #undef SUBTARGET_CPP_SIZE_SPEC
79 #define SUBTARGET_CPP_SIZE_SPEC "\
80 %{mabi=32|mabi=n32: -D__SIZE_TYPE__=unsigned\\ int -D__PTRDIFF_TYPE__=int \
81 -D__WCHAR_TYPE__=long\\ int -D__WINT_TYPE__=long\\ int} \
82 %{mabi=64: -D__SIZE_TYPE__=long\\ unsigned\\ int -D__PTRDIFF_TYPE__=long\\ int \
83 -D__WCHAR_TYPE__=int -D__WINT_TYPE__=int} \
84 %{!mabi*: -D__SIZE_TYPE__=unsigned\\ int -D__PTRDIFF_TYPE__=int \
85 -D__WCHAR_TYPE__=long\\ int -D__WINT_TYPE__=long\\ int}"
87 /* We must make -mips3 do what -mlong64 used to do. */
88 /* ??? If no mipsX option given, but a mabi=X option is, then should set
89 _MIPS_ISA based on the mabi=X option. */
90 /* ??? If no mabi=X option give, but a mipsX option is, then should set
91 _MIPS_SIM based on the mipsX option. */
92 /* ??? Same for _MIPS_SZINT. */
93 /* ??? Same for _MIPS_SZPTR. */
94 /* ??? Same for __SIZE_TYPE and __PTRDIFF_TYPE. */
95 #undef SUBTARGET_CPP_SPEC
96 #define SUBTARGET_CPP_SPEC "\
97 %{!ansi:-D__EXTENSIONS__ -D_SGI_SOURCE} \
98 %{mfp32: -D_MIPS_FPSET=16}%{!mfp32: -D_MIPS_FPSET=32} \
99 %{mips1: -D_MIPS_ISA=_MIPS_ISA_MIPS1} \
100 %{mips2: -D_MIPS_ISA=_MIPS_ISA_MIPS2} \
101 %{mips3: -D_MIPS_ISA=_MIPS_ISA_MIPS3} \
102 %{mips4: -D_MIPS_ISA=_MIPS_ISA_MIPS4} \
103 %{!mips*: -D_MIPS_ISA=_MIPS_ISA_MIPS3} \
104 %{mabi=32: -D_MIPS_SIM=_MIPS_SIM_ABI32} \
105 %{mabi=n32: -D_ABIN32=2 -D_MIPS_SIM=_ABIN32} \
106 %{mabi=64: -D_ABI64=3 -D_MIPS_SIM=_ABI64} \
107 %{!mabi*: -D_ABIN32=2 -D_MIPS_SIM=_ABIN32} \
108 %{!mint64: -D_MIPS_SZINT=32}%{mint64: -D_MIPS_SZINT=64} \
109 %{mabi=32: -D_MIPS_SZLONG=32} \
110 %{mabi=n32: -D_MIPS_SZLONG=32} \
111 %{mabi=64: -D_MIPS_SZLONG=64} \
112 %{!mabi*: -D_MIPS_SZLONG=32} \
113 %{mabi=32: -D_MIPS_SZPTR=32} \
114 %{mabi=n32: -D_MIPS_SZPTR=32} \
115 %{mabi=64: -D_MIPS_SZPTR=64} \
116 %{!mabi*: -D_MIPS_SZPTR=32} \
117 %{!mips1:%{!mips2: -D_COMPILER_VERSION=601}} \
118 %{!mips*: -U__mips -D__mips=3} \
119 %{mabi=32: -U__mips64} \
120 %{mabi=n32: -D__mips64} \
121 %{mabi=64: -D__mips64} \
122 %{!mabi*: -D__mips64}"
124 /* Irix 6 uses DWARF-2. */
125 #define DWARF2_DEBUGGING_INFO
126 #define MIPS_DEBUGGING_INFO
127 #undef PREFERRED_DEBUGGING_TYPE
128 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
130 /* Force the generation of dwarf .debug_frame sections even if not
131 compiling -g. This guarantees that we can unwind the stack. */
132 #define DWARF2_FRAME_INFO 1
133 /* The size in bytes of a DWARF field indicating an offset or length
134 relative to a debug info section, specified to be 4 bytes in the DWARF-2
135 specification. The SGI/MIPS ABI defines it to be the same as PTR_SIZE. */
136 #define DWARF_OFFSET_SIZE PTR_SIZE
138 /* There is no GNU as port for Irix6 yet, so we set MD_EXEC_PREFIX so that
139 gcc will automatically find SGI as instead of searching the user's path.
140 The latter can fail when building a cross compiler if the user has . in
141 the path before /usr/bin, since then gcc will find and try to use the link
142 to the cross assembler which can't possibly work. */
144 #undef MD_EXEC_PREFIX
145 #define MD_EXEC_PREFIX "/usr/bin/"
147 /* We have no need for MD_STARTFILE_PREFIX. */
148 #undef MD_STARTFILE_PREFIX
151 #define MACHINE_TYPE "SGI running IRIX 6.x"
153 /* Irix 5 stuff that we don't need for Irix 6. */
154 /* ??? We do need this for the -mabi=32 switch though. */
155 #undef ASM_OUTPUT_UNDEF_FUNCTION
156 #undef ASM_OUTPUT_EXTERNAL_LIBCALL
157 #undef ASM_DECLARE_FUNCTION_SIZE
158 #undef UNALIGNED_SHORT_ASM_OP
159 #undef UNALIGNED_INT_ASM_OP
161 /* Stuff we need for Irix 6 that isn't in Irix 5. */
163 /* The SGI assembler doesn't like labels before the .ent, so we must output
164 the .ent and function name here, which is the normal place for it. */
166 #undef ASM_DECLARE_FUNCTION_NAME
167 #define ASM_DECLARE_FUNCTION_NAME(STREAM, NAME, DECL) \
169 fputs ("\t.ent\t", STREAM); \
170 assemble_name (STREAM, NAME); \
171 fputs ("\n", STREAM); \
172 assemble_name (STREAM, NAME); \
173 fputs (":\n", STREAM); \
176 /* Likewise, the SGI assembler doesn't like labels after the .end, so we
177 must output the .end here. */
178 #define ASM_DECLARE_FUNCTION_SIZE(STREAM, NAME, DECL) \
180 fputs ("\t.end\t", STREAM); \
181 assemble_name (STREAM, NAME); \
182 fputs ("\n", STREAM); \
185 /* Tell function_prologue in mips.c that we have already output the .ent/.end
187 #define FUNCTION_NAME_ALREADY_DECLARED
189 #undef SET_ASM_OP /* Has no equivalent. See ASM_OUTPUT_DEF below. */
192 /* This is *NOT* how to equate one symbol to another symbol. The assembler
193 '=' syntax just equates a name to a constant expression.
194 See ASM_OUTPUT_WEAK_ALIAS. */
196 #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \
197 do { fprintf ((FILE), "\t"); \
198 assemble_name (FILE, LABEL1); \
199 fprintf (FILE, " = "); \
200 assemble_name (FILE, LABEL2); \
201 fprintf (FILE, "\n"); \
205 /* Define the strings used for the special svr4 .type and .size directives. */
207 #define TYPE_ASM_OP "\t.type\t"
208 #define SIZE_ASM_OP "\t.size\t"
210 /* Irix assembler does not support the init_priority C++ attribute. */
211 #undef SUPPORTS_INIT_PRIORITY
212 #define SUPPORTS_INIT_PRIORITY 0
214 /* A linker error can empirically be avoided by removing duplicate
215 library search directories. */
216 #define LINK_ELIMINATE_DUPLICATE_LDIRECTORIES 1
218 #define POPSECTION_ASM_OP "\t.popsection"
220 /* ??? If no mabi=X option give, but a mipsX option is, then should depend
221 on the mipsX option. */
222 /* If no mips[3,4] option given, give the appropriate default for mabi=X */
223 #undef SUBTARGET_ASM_SPEC
224 #define SUBTARGET_ASM_SPEC "%{!mabi*:-n32} %{!mips*: %{!mabi*:-mips3} %{mabi=n32:-mips3} %{mabi=64:-mips4}}"
226 /* Must pass -g0 to the assembler, otherwise it may overwrite our
227 debug info with its own debug info. */
228 /* Must pass -show instead of -v. */
229 /* Must pass -G 0 to the assembler, otherwise we may get warnings about
231 /* ??? We pass -w to disable all assembler warnings. The `label should be
232 inside .ent/.end block' warning that we get for DWARF II debug info labels
233 is particularly annoying. */
234 #undef SUBTARGET_MIPS_AS_ASM_SPEC
235 #define SUBTARGET_MIPS_AS_ASM_SPEC "%{v:-show} -G 0 -w"
237 #undef SUBTARGET_ASM_DEBUGGING_SPEC
238 #define SUBTARGET_ASM_DEBUGGING_SPEC "-g0"
240 /* The MIPS assembler occasionally misoptimizes. Since GCC should be
241 doing scheduling anyhow, just turn off optimization in the assembler. */
242 #undef SUBTARGET_ASM_OPTIMIZING_SPEC
243 #define SUBTARGET_ASM_OPTIMIZING_SPEC "-O0"
245 /* The assembler now accepts .section pseudo-ops, but it does not allow
246 one to change the section in the middle of a function, so we can't use
247 the INIT_SECTION_ASM_OP code in crtstuff. But we can build up the ctor
248 and dtor lists this way, so we use -init and -fini to invoke the
249 do_global_* functions instead of running collect2. */
251 #define BSS_SECTION_ASM_OP "\t.section\t.bss"
252 #define CONST_SECTION_ASM_OP_32 "\t.rdata"
253 #define CONST_SECTION_ASM_OP_64 "\t.section\t.rodata"
255 /* A default list of other sections which we might be "in" at any given
256 time. For targets that use additional sections (e.g. .tdesc) you
257 should override this definition in the target-specific file which
258 includes this file. */
260 #undef EXTRA_SECTIONS
261 #define EXTRA_SECTIONS in_sdata, in_rdata, in_const
263 /* A default list of extra section function definitions. For targets
264 that use additional sections (e.g. .tdesc) you should override this
265 definition in the target-specific file which includes this file. */
267 /* ??? rdata_section is now same as svr4 const_section. */
269 #undef EXTRA_SECTION_FUNCTIONS
270 #define EXTRA_SECTION_FUNCTIONS \
274 if (in_section != in_sdata) \
276 fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP); \
277 in_section = in_sdata; \
284 if (in_section != in_rdata) \
286 if (mips_abi != ABI_32 && mips_abi != ABI_O64) \
287 fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP_64); \
289 fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP_32); \
290 in_section = in_rdata; \
294 /* Switch into a generic section. */
295 #undef TARGET_ASM_NAMED_SECTION
296 #define TARGET_ASM_NAMED_SECTION iris6_asm_named_section
298 /* ??? Perhaps just include svr4.h in this file? */
300 /* ??? SGI assembler may core dump when compiling with -g.
301 Sometimes as succeeds, but then we get a linker error. (cmds.c in 072.sc)
302 Getting rid of .file solves both problems. */
303 #undef ASM_OUTPUT_FILENAME
304 #define ASM_OUTPUT_FILENAME(STREAM, NUM_SOURCE_FILENAMES, NAME) \
307 fprintf (STREAM, "\t#.file\t%d ", NUM_SOURCE_FILENAMES); \
308 output_quoted_string (STREAM, NAME); \
309 fputs ("\n", STREAM); \
313 /* ??? SGI assembler gives warning whenever .lcomm is used. */
314 #undef ASM_OUTPUT_LOCAL
315 #define ASM_OUTPUT_ALIGNED_LOCAL(STREAM, NAME, SIZE, ALIGN) \
318 if (mips_abi != ABI_32 && mips_abi != ABI_O64) \
320 fprintf (STREAM, "%s\n", BSS_SECTION_ASM_OP); \
321 mips_declare_object (STREAM, NAME, "", ":\n", 0); \
322 ASM_OUTPUT_ALIGN (STREAM, floor_log2 (ALIGN / BITS_PER_UNIT)); \
323 ASM_OUTPUT_SKIP (STREAM, SIZE); \
324 fprintf (STREAM, "%s\n", POPSECTION_ASM_OP); \
327 mips_declare_object (STREAM, NAME, "\n\t.lcomm\t", ",%u\n", (SIZE)); \
331 /* A C statement (sans semicolon) to output to the stdio stream
332 FILE the assembler definition of uninitialized global DECL named
333 NAME whose size is SIZE bytes and alignment is ALIGN bytes.
334 Try to use asm_output_aligned_bss to implement this macro. */
336 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
337 asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
339 /* Write the extra assembler code needed to declare an object properly. */
341 #undef ASM_DECLARE_OBJECT_NAME
342 #define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL) \
345 size_directive_output = 0; \
346 if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \
348 size_directive_output = 1; \
349 fprintf (STREAM, "%s", SIZE_ASM_OP); \
350 assemble_name (STREAM, NAME); \
351 fprintf (STREAM, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
353 mips_declare_object (STREAM, NAME, "", ":\n", 0); \
357 /* Define the `__builtin_va_list' type for the ABI. On Irix6, this
359 #undef BUILD_VA_LIST_TYPE
360 #define BUILD_VA_LIST_TYPE(VALIST) \
361 (VALIST) = build_pointer_type (char_type_node)
363 /* Output the size directive for a decl in rest_of_decl_compilation
364 in the case where we did not do so before the initializer.
365 Once we find the error_mark_node, we know that the value of
366 size_directive_output was set
367 by ASM_DECLARE_OBJECT_NAME when it was run for the same decl. */
369 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \
371 const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
372 if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \
373 && ! AT_END && TOP_LEVEL \
374 && DECL_INITIAL (DECL) == error_mark_node \
375 && !size_directive_output) \
377 size_directive_output = 1; \
378 fprintf (FILE, "%s", SIZE_ASM_OP); \
379 assemble_name (FILE, name); \
380 fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
384 #undef LOCAL_LABEL_PREFIX
385 #define LOCAL_LABEL_PREFIX ((mips_abi == ABI_32 || mips_abi == ABI_O64) \
388 /* Profiling is supported via libprof1.a not -lc_p as in Irix 3. */
389 /* ??? If no mabi=X option give, but a mipsX option is, then should depend
390 on the mipsX option. */
391 #undef STARTFILE_SPEC
392 #define STARTFILE_SPEC \
394 %{mabi=32:%{pg:gcrt1.o%s} \
395 %{!pg:%{p:mcrt1.o%s libprof1.a%s}%{!p:crt1.o%s}}} \
397 %{mips4:%{pg:/usr/lib32/mips4/gcrt1.o%s} \
398 %{!pg:%{p:/usr/lib32/mips4/mcrt1.o%s /usr/lib32/mips4/libprof1.a%s} \
399 %{!p:/usr/lib32/mips4/crt1.o%s}}} \
400 %{!mips4:%{pg:/usr/lib32/mips3/gcrt1.o%s} \
401 %{!pg:%{p:/usr/lib32/mips3/mcrt1.o%s /usr/lib32/mips3/libprof1.a%s} \
402 %{!p:/usr/lib32/mips3/crt1.o%s}}}} \
404 %{mips4:%{pg:/usr/lib64/mips4/gcrt1.o} \
405 %{!pg:%{p:/usr/lib64/mips4/mcrt1.o /usr/lib64/mips4/libprof1.a} \
406 %{!p:/usr/lib64/mips4/crt1.o}}} \
407 %{!mips4:%{pg:/usr/lib64/mips3/gcrt1.o} \
408 %{!pg:%{p:/usr/lib64/mips3/mcrt1.o /usr/lib64/mips3/libprof1.a} \
409 %{!p:/usr/lib64/mips3/crt1.o}}}} \
411 %{mips4:%{pg:/usr/lib32/mips4/gcrt1.o%s} \
412 %{!pg:%{p:/usr/lib32/mips4/mcrt1.o%s /usr/lib32/mips4/libprof1.a%s} \
413 %{!p:/usr/lib32/mips4/crt1.o%s}}} \
414 %{!mips4:%{pg:/usr/lib32/mips3/gcrt1.o%s} \
415 %{!pg:%{p:/usr/lib32/mips3/mcrt1.o%s /usr/lib32/mips3/libprof1.a%s} \
416 %{!p:/usr/lib32/mips3/crt1.o%s}}}}} \
421 "%{mabi=n32: %{mips4:-L/usr/lib32/mips4} %{!mips4:-L/usr/lib32/mips3} \
423 %{mabi=64: %{mips4:-L/usr/lib64/mips4} %{!mips4:-L/usr/lib64/mips3} \
425 %{!mabi*: %{mips4:-L/usr/lib32/mips4} %{!mips4:-L/usr/lib32/mips3} \
428 -dont_warn_unused %{p:libprof1.a%s}%{pg:libprof1.a%s} -lc -warn_unused}"
430 /* Avoid getting two warnings for libgcc.a everytime we link. */
432 #define LIBGCC_SPEC "-dont_warn_unused -lgcc -warn_unused"
434 /* ??? If no mabi=X option give, but a mipsX option is, then should depend
435 on the mipsX option. */
437 #define ENDFILE_SPEC \
441 %{mabi=n32:%{mips4:/usr/lib32/mips4/crtn.o%s}\
442 %{!mips4:/usr/lib32/mips3/crtn.o%s}}\
443 %{mabi=64:%{mips4:/usr/lib64/mips4/crtn.o%s}\
444 %{!mips4:/usr/lib64/mips3/crtn.o%s}}\
445 %{!mabi*:%{mips4:/usr/lib32/mips4/crtn.o%s}\
446 %{!mips4:/usr/lib32/mips3/crtn.o%s}}}"
448 /* ??? If no mabi=X option give, but a mipsX option is, then should depend
449 on the mipsX option. */
452 %{G*} %{EB} %{EL} %{mips1} %{mips2} %{mips3} %{mips4} \
453 %{bestGnum} %{shared} %{non_shared} \
454 %{call_shared} %{no_archive} %{exact_version} %{w} \
455 %{!shared: %{!non_shared: %{!call_shared: -call_shared -no_unresolved}}} \
456 %{rpath} -init __do_global_ctors -fini __do_global_dtors \
457 %{shared:-hidden_symbol __do_global_ctors,__do_global_dtors,__EH_FRAME_BEGIN__,__frame_dummy} \
458 -_SYSTYPE_SVR4 -woff 131 \
459 %{mabi=32: -32}%{mabi=n32: -n32}%{mabi=64: -64}%{!mabi*: -n32}"