1 /* Definitions for MIPS varients running FreeBSD with ELF format
2 Copyright (C) 2008 Free Software Foundation, Inc.
3 Continued by David O'Brien <obrien@freebsd.org>
5 This file is part of GCC.
7 GCC 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 GCC 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 GCC; see the file COPYING. If not, write to
19 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA. */
24 /* This defines which switch letters take arguments. -G is a MIPS
27 #undef SWITCH_TAKES_ARG
28 #define SWITCH_TAKES_ARG(CHAR) \
29 (FBSD_SWITCH_TAKES_ARG (CHAR) \
33 #undef SUBTARGET_EXTRA_SPECS /* mips.h bogusly defines it. */
34 #define SUBTARGET_EXTRA_SPECS \
35 { "fbsd_dynamic_linker", FBSD_DYNAMIC_LINKER}, \
36 { "fbsd_link_spec", FBSD_LINK_SPEC }
38 /* config/mips/mips.h defines CC1_SPEC,
39 but gives us an "out" with SUBTARGET_CC1_SPEC. */
40 #undef SUBTARGET_CC1_SPEC
41 #define SUBTARGET_CC1_SPEC "%{profile:-p}"
43 /* Provide a LINK_SPEC appropriate for FreeBSD. Here we provide support
44 for the special GCC options -static and -shared, which allow us to
45 link things in one of these three modes by applying the appropriate
46 combinations of options at link-time. We like to support here for
47 as many of the other GNU linker options as possible. But I don't
48 have the time to search for those flags. I am sure how to add
49 support for -soname shared_object_name. H.J.
51 When the -shared link option is used a final link is not being
54 #define FBSD_LINK_SPEC "\
55 %{p:%nconsider using `-pg' instead of `-p' with gprof(1) } \
57 %{assert*} %{R*} %{rpath*} %{defsym*} \
58 %{shared:-Bshareable %{h*} %{soname*}} \
59 %{!static:--enable-new-dtags} \
62 %{rdynamic: -export-dynamic} \
63 %{!dynamic-linker:-dynamic-linker %(fbsd_dynamic_linker) }} \
65 %{symbolic:-Bsymbolic} "
69 %{EB} %{EL} %(endian_spec) \
70 %{G*} %{mips1} %{mips2} %{mips3} %{mips4} \
71 %{mips32} %{mips32r2} %{mips64} %{mips64r2} \
72 %{bestGnum} %{call_shared} %{no_archive} %{exact_version} \
73 %{mabi=32:-melf32%{EB:b}%{EL:l}tsmip_fbsd} \
74 %{mabi=n32:-melf32%{EB:b}%{EL:l}tsmipn32_fbsd} \
75 %{mabi=64:-melf64%{EB:b}%{EL:l}tsmip_fbsd} \
76 %{mabi=o64:-melf64%{EB:b}%{EL:l}tsmip_fbsd} \
79 #undef LINK_GCC_C_SEQUENCE_SPEC
80 #define LINK_GCC_C_SEQUENCE_SPEC \
81 "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
83 /* Reset our STARTFILE_SPEC which was properly set in config/freebsd.h
84 but trashed by config/mips/elf.h. */
86 #define STARTFILE_SPEC FBSD_STARTFILE_SPEC
88 /* Provide an ENDFILE_SPEC appropriate for FreeBSD/mips. */
90 #define ENDFILE_SPEC FBSD_ENDFILE_SPEC
92 /* Reset our LIB_SPEC which was properly set in config/freebsd.h
93 but trashed by config/mips/elf.h. */
95 #define LIB_SPEC FBSD_LIB_SPEC
97 /* config/mips/mips.h defines CPP_SPEC, and it expects SUBTARGET_CPP_SPEC. */
98 #undef SUBTARGET_CPP_SPEC
99 #define SUBTARGET_CPP_SPEC FBSD_CPP_SPEC
102 /************************[ Target stuff ]***********************************/
104 /* Define the actual types of some ANSI-mandated types.
105 Needs to agree with <machine/ansi.h>. GCC defaults come from c-decl.c,
106 c-common.c, and config/<arch>/<arch>.h. */
108 #undef TARGET_DEFAULT
109 #define TARGET_DEFAULT (MASK_ABICALLS | MASK_SOFT_FLOAT)
111 #if TARGET_ENDIAN_DEFAULT != 0
112 #define TARGET_VERSION fprintf (stderr, " (FreeBSD/mips)");
114 #define TARGET_VERSION fprintf (stderr, " (FreeBSD/mipsel)");
117 /* The generic MIPS TARGET_CPU_CPP_BUILTINS are incorrect for FreeBSD.
118 Specifically, they define too many namespace-invasive macros. Override
119 them here. Note this is structured for easy comparison to the version
122 #undef TARGET_CPU_CPP_BUILTINS
123 #define TARGET_CPU_CPP_BUILTINS() \
126 builtin_assert ("machine=mips"); \
127 builtin_assert ("cpu=mips"); \
128 builtin_define ("__mips__"); \
131 builtin_define ("__mips64"); \
133 if (TARGET_FLOAT64) \
134 builtin_define ("__mips_fpr=64"); \
136 builtin_define ("__mips_fpr=32"); \
139 builtin_define ("__mips16"); \
141 if (mips_abi == ABI_N32) \
143 builtin_define ("__mips_n32"); \
144 builtin_define ("_ABIN32=2"); \
145 builtin_define ("_MIPS_SIM=_ABIN32"); \
146 builtin_define ("_MIPS_SZLONG=32"); \
147 builtin_define ("_MIPS_SZPTR=32"); \
149 else if (mips_abi == ABI_64) \
151 builtin_define ("__mips_n64"); \
152 builtin_define ("_ABI64=3"); \
153 builtin_define ("_MIPS_SIM=_ABI64"); \
154 builtin_define ("_MIPS_SZLONG=64"); \
155 builtin_define ("_MIPS_SZPTR=64"); \
157 else if (mips_abi == ABI_O64) \
159 builtin_define ("__mips_o64"); \
160 builtin_define ("_ABIO64=4"); \
161 builtin_define ("_MIPS_SIM=_ABIO64"); \
162 builtin_define ("_MIPS_SZLONG=64"); \
163 builtin_define ("_MIPS_SZPTR=64"); \
165 else if (mips_abi == ABI_EABI) \
167 builtin_define ("__mips_eabi"); \
168 builtin_define ("_ABIEMB=5"); \
169 builtin_define ("_MIPS_SIM=_ABIEMB"); \
171 builtin_define ("_MIPS_SZLONG=64"); \
173 builtin_define ("_MIPS_SZLONG=32"); \
175 builtin_define ("_MIPS_SZPTR=64"); \
177 builtin_define ("_MIPS_SZPTR=32"); \
181 builtin_define ("__mips_o32"); \
182 builtin_define ("_ABIO32=1"); \
183 builtin_define ("_MIPS_SIM=_ABIO32"); \
184 builtin_define ("_MIPS_SZLONG=32"); \
185 builtin_define ("_MIPS_SZPTR=32"); \
187 if (TARGET_FLOAT64) \
188 builtin_define ("_MIPS_FPSET=32"); \
190 builtin_define ("_MIPS_FPSET=16"); \
192 builtin_define ("_MIPS_SZINT=32"); \
194 MIPS_CPP_SET_PROCESSOR ("_MIPS_ARCH", mips_arch_info); \
195 MIPS_CPP_SET_PROCESSOR ("_MIPS_TUNE", mips_tune_info); \
199 builtin_define ("__mips=1"); \
200 builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS1"); \
202 else if (ISA_MIPS2) \
204 builtin_define ("__mips=2"); \
205 builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS2"); \
207 else if (ISA_MIPS3) \
209 builtin_define ("__mips=3"); \
210 builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS3"); \
212 else if (ISA_MIPS4) \
214 builtin_define ("__mips=4"); \
215 builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS4"); \
217 else if (ISA_MIPS32) \
219 builtin_define ("__mips=32"); \
220 builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS32"); \
221 builtin_define ("__mips_isa_rev=1"); \
223 else if (ISA_MIPS32R2) \
225 builtin_define ("__mips=32"); \
226 builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS32"); \
227 builtin_define ("__mips_isa_rev=2"); \
229 else if (ISA_MIPS64) \
231 builtin_define ("__mips=64"); \
232 builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS64"); \
233 builtin_define ("__mips_isa_rev=1"); \
235 else if (ISA_MIPS64R2) \
237 builtin_define ("__mips=64"); \
238 builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS64"); \
239 builtin_define ("__mips_isa_rev=2"); \
242 if (TARGET_HARD_FLOAT) \
243 builtin_define ("__mips_hard_float"); \
244 else if (TARGET_SOFT_FLOAT) \
245 builtin_define ("__mips_soft_float"); \
247 if (TARGET_SINGLE_FLOAT) \
248 builtin_define ("__mips_single_float"); \
250 if (TARGET_BIG_ENDIAN) \
251 builtin_define ("__MIPSEB__"); \
253 builtin_define ("__MIPSEL__"); \
255 /* No language dialect defines. */ \
256 if (TARGET_ABICALLS) \
257 builtin_define ("__ABICALLS__"); \
261 /* Default ABI and ISA */
264 * Shouldn't this also be dependent on !mips*?
266 #ifdef MIPS_CPU_STRING_DEFAULT
267 #define DRIVER_SELF_ISA_SPEC "%{!march=*: -march=" MIPS_CPU_STRING_DEFAULT "}"
269 #define DRIVER_SELF_ISA_SPEC "%{!march=*: -march=from-abi}"
272 #undef DRIVER_SELF_SPECS
273 #if MIPS_ABI_DEFAULT == ABI_N32
274 #define DRIVER_SELF_SPECS \
275 "%{!EB:%{!EL:%(endian_spec)}}", \
276 "%{!mabi=*: -mabi=n32}", \
278 #elif MIPS_ABI_DEFAULT == ABI_64
279 #define DRIVER_SELF_SPECS \
280 "%{!EB:%{!EL:%(endian_spec)}}", \
281 "%{!mabi=*: -mabi=64}", \
283 #elif MIPS_ABI_DEFAULT == ABI_O64
284 #define DRIVER_SELF_SPECS \
285 "%{!EB:%{!EL:%(endian_spec)}}", \
286 "%{!mabi=*: -mabi=o64}", \
288 #else /* default to o32 */
289 #define DRIVER_SELF_SPECS \
290 "%{!EB:%{!EL:%(endian_spec)}}", \
291 "%{!mabi=*: -mabi=32}", \
296 /* Don't default to pcc-struct-return, we want to retain compatibility with
297 older gcc versions AND pcc-struct-return is nonreentrant.
298 (even though the SVR4 ABI for the i386 says that records and unions are
299 returned in memory). */
301 #undef DEFAULT_PCC_STRUCT_RETURN
302 #define DEFAULT_PCC_STRUCT_RETURN 0
306 /************************[ Assembler stuff ]********************************/
308 #undef SUBTARGET_ASM_SPEC
309 #define SUBTARGET_ASM_SPEC \
310 "%{!mno-abicalls: %{!fno-PIC:%{!fno-pic:-KPIC}}}"
312 /* -G is incompatible with -KPIC which is the default, so only allow objects
313 in the small data section if the user explicitly asks for it. */
315 #undef MIPS_DEFAULT_GVALUE
316 #define MIPS_DEFAULT_GVALUE 0
318 /* If defined, a C expression whose value is a string containing the
319 assembler operation to identify the following data as
320 uninitialized global data. If not defined, and neither
321 `ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined,
322 uninitialized global data will be output in the data section if
323 `-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be
325 #undef BSS_SECTION_ASM_OP
326 #define BSS_SECTION_ASM_OP "\t.section\t.bss"
328 /* Like `ASM_OUTPUT_BSS' except takes the required alignment as a
329 separate, explicit argument. If you define this macro, it is used
330 in place of `ASM_OUTPUT_BSS', and gives you more flexibility in
331 handling the required alignment of the variable. The alignment is
332 specified as the number of bits.
334 Try to use function `asm_output_aligned_bss' defined in file
335 `varasm.c' when defining this macro. */
336 #undef ASM_OUTPUT_ALIGNED_BSS
337 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
338 asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
340 /* Standard AT&T UNIX 'as' local label spelling. */
341 #undef LOCAL_LABEL_PREFIX
342 #define LOCAL_LABEL_PREFIX "."
344 /* Currently we don't support 128bit long doubles, so for now we force
346 #undef LONG_DOUBLE_TYPE_SIZE
347 #define LONG_DOUBLE_TYPE_SIZE 64
350 #undef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
351 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64
354 /************************[ Debugger stuff ]*********************************/
355 #undef DBX_DEBUGGING_INFO
356 #undef MIPS_DEBUGGING_INFO