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*}} \
61 %{rdynamic: -export-dynamic} \
62 %{!dynamic-linker:-dynamic-linker %(fbsd_dynamic_linker) }} \
64 %{symbolic:-Bsymbolic} "
68 %{EB} %{EL} %(endian_spec) \
69 %{G*} %{mips1} %{mips2} %{mips3} %{mips4} \
70 %{mips32} %{mips32r2} %{mips64} %{mips64r2} \
71 %{bestGnum} %{call_shared} %{no_archive} %{exact_version} \
72 %{mabi=32:-melf32%{EB:b}%{EL:l}tsmip_fbsd} \
73 %{mabi=n32:-melf32%{EB:b}%{EL:l}tsmipn32_fbsd} \
74 %{mabi=64:-melf64%{EB:b}%{EL:l}tsmip_fbsd} \
75 %{mabi=o64:-melf64%{EB:b}%{EL:l}tsmip_fbsd} \
78 #undef LINK_GCC_C_SEQUENCE_SPEC
79 #define LINK_GCC_C_SEQUENCE_SPEC \
80 "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
82 /* Reset our STARTFILE_SPEC which was properly set in config/freebsd.h
83 but trashed by config/mips/elf.h. */
85 #define STARTFILE_SPEC FBSD_STARTFILE_SPEC
87 /* Provide an ENDFILE_SPEC appropriate for FreeBSD/mips. */
89 #define ENDFILE_SPEC FBSD_ENDFILE_SPEC
91 /* Reset our LIB_SPEC which was properly set in config/freebsd.h
92 but trashed by config/mips/elf.h. */
94 #define LIB_SPEC FBSD_LIB_SPEC
96 /* config/mips/mips.h defines CPP_SPEC, and it expects SUBTARGET_CPP_SPEC. */
97 #undef SUBTARGET_CPP_SPEC
98 #define SUBTARGET_CPP_SPEC FBSD_CPP_SPEC
101 /************************[ Target stuff ]***********************************/
103 /* Define the actual types of some ANSI-mandated types.
104 Needs to agree with <machine/ansi.h>. GCC defaults come from c-decl.c,
105 c-common.c, and config/<arch>/<arch>.h. */
107 #undef TARGET_DEFAULT
108 #define TARGET_DEFAULT (MASK_ABICALLS | MASK_SOFT_FLOAT)
110 #if TARGET_ENDIAN_DEFAULT != 0
111 #define TARGET_VERSION fprintf (stderr, " (FreeBSD/mips)");
113 #define TARGET_VERSION fprintf (stderr, " (FreeBSD/mipsel)");
116 /* The generic MIPS TARGET_CPU_CPP_BUILTINS are incorrect for FreeBSD.
117 Specifically, they define too many namespace-invasive macros. Override
118 them here. Note this is structured for easy comparison to the version
121 #undef TARGET_CPU_CPP_BUILTINS
122 #define TARGET_CPU_CPP_BUILTINS() \
125 builtin_assert ("machine=mips"); \
126 builtin_assert ("cpu=mips"); \
127 builtin_define ("__mips__"); \
130 builtin_define ("__mips64"); \
132 if (TARGET_FLOAT64) \
133 builtin_define ("__mips_fpr=64"); \
135 builtin_define ("__mips_fpr=32"); \
138 builtin_define ("__mips16"); \
140 if (mips_abi == ABI_N32) \
142 builtin_define ("__mips_n32"); \
143 builtin_define ("_ABIN32=2"); \
144 builtin_define ("_MIPS_SIM=_ABIN32"); \
145 builtin_define ("_MIPS_SZLONG=32"); \
146 builtin_define ("_MIPS_SZPTR=32"); \
148 else if (mips_abi == ABI_64) \
150 builtin_define ("__mips_n64"); \
151 builtin_define ("_ABI64=3"); \
152 builtin_define ("_MIPS_SIM=_ABI64"); \
153 builtin_define ("_MIPS_SZLONG=64"); \
154 builtin_define ("_MIPS_SZPTR=64"); \
156 else if (mips_abi == ABI_O64) \
158 builtin_define ("__mips_o64"); \
159 builtin_define ("_ABIO64=4"); \
160 builtin_define ("_MIPS_SIM=_ABIO64"); \
161 builtin_define ("_MIPS_SZLONG=64"); \
162 builtin_define ("_MIPS_SZPTR=64"); \
164 else if (mips_abi == ABI_EABI) \
166 builtin_define ("__mips_eabi"); \
167 builtin_define ("_ABIEMB=5"); \
168 builtin_define ("_MIPS_SIM=_ABIEMB"); \
170 builtin_define ("_MIPS_SZLONG=64"); \
172 builtin_define ("_MIPS_SZLONG=32"); \
174 builtin_define ("_MIPS_SZPTR=64"); \
176 builtin_define ("_MIPS_SZPTR=32"); \
180 builtin_define ("__mips_o32"); \
181 builtin_define ("_ABIO32=1"); \
182 builtin_define ("_MIPS_SIM=_ABIO32"); \
183 builtin_define ("_MIPS_SZLONG=32"); \
184 builtin_define ("_MIPS_SZPTR=32"); \
186 if (TARGET_FLOAT64) \
187 builtin_define ("_MIPS_FPSET=32"); \
189 builtin_define ("_MIPS_FPSET=16"); \
191 builtin_define ("_MIPS_SZINT=32"); \
193 MIPS_CPP_SET_PROCESSOR ("_MIPS_ARCH", mips_arch_info); \
194 MIPS_CPP_SET_PROCESSOR ("_MIPS_TUNE", mips_tune_info); \
198 builtin_define ("__mips=1"); \
199 builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS1"); \
201 else if (ISA_MIPS2) \
203 builtin_define ("__mips=2"); \
204 builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS2"); \
206 else if (ISA_MIPS3) \
208 builtin_define ("__mips=3"); \
209 builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS3"); \
211 else if (ISA_MIPS4) \
213 builtin_define ("__mips=4"); \
214 builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS4"); \
216 else if (ISA_MIPS32) \
218 builtin_define ("__mips=32"); \
219 builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS32"); \
220 builtin_define ("__mips_isa_rev=1"); \
222 else if (ISA_MIPS32R2) \
224 builtin_define ("__mips=32"); \
225 builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS32"); \
226 builtin_define ("__mips_isa_rev=2"); \
228 else if (ISA_MIPS64) \
230 builtin_define ("__mips=64"); \
231 builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS64"); \
232 builtin_define ("__mips_isa_rev=1"); \
234 else if (ISA_MIPS64R2) \
236 builtin_define ("__mips=64"); \
237 builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS64"); \
238 builtin_define ("__mips_isa_rev=2"); \
241 if (TARGET_HARD_FLOAT) \
242 builtin_define ("__mips_hard_float"); \
243 else if (TARGET_SOFT_FLOAT) \
244 builtin_define ("__mips_soft_float"); \
246 if (TARGET_SINGLE_FLOAT) \
247 builtin_define ("__mips_single_float"); \
249 if (TARGET_BIG_ENDIAN) \
250 builtin_define ("__MIPSEB__"); \
252 builtin_define ("__MIPSEL__"); \
254 /* No language dialect defines. */ \
255 if (TARGET_ABICALLS) \
256 builtin_define ("__ABICALLS__"); \
260 /* Default ABI and ISA */
263 * Shouldn't this also be dependent on !mips*?
265 #ifdef MIPS_CPU_STRING_DEFAULT
266 #define DRIVER_SELF_ISA_SPEC "%{!march=*: -march=" MIPS_CPU_STRING_DEFAULT "}"
268 #define DRIVER_SELF_ISA_SPEC "%{!march=*: -march=from-abi}"
271 #undef DRIVER_SELF_SPECS
272 #if MIPS_ABI_DEFAULT == ABI_N32
273 #define DRIVER_SELF_SPECS \
274 "%{!EB:%{!EL:%(endian_spec)}}", \
275 "%{!mabi=*: -mabi=n32}", \
277 #elif MIPS_ABI_DEFAULT == ABI_64
278 #define DRIVER_SELF_SPECS \
279 "%{!EB:%{!EL:%(endian_spec)}}", \
280 "%{!mabi=*: -mabi=64}", \
282 #elif MIPS_ABI_DEFAULT == ABI_O64
283 #define DRIVER_SELF_SPECS \
284 "%{!EB:%{!EL:%(endian_spec)}}", \
285 "%{!mabi=*: -mabi=o64}", \
287 #else /* default to o32 */
288 #define DRIVER_SELF_SPECS \
289 "%{!EB:%{!EL:%(endian_spec)}}", \
290 "%{!mabi=*: -mabi=32}", \
295 /* Don't default to pcc-struct-return, we want to retain compatibility with
296 older gcc versions AND pcc-struct-return is nonreentrant.
297 (even though the SVR4 ABI for the i386 says that records and unions are
298 returned in memory). */
300 #undef DEFAULT_PCC_STRUCT_RETURN
301 #define DEFAULT_PCC_STRUCT_RETURN 0
305 /************************[ Assembler stuff ]********************************/
307 #undef SUBTARGET_ASM_SPEC
308 #define SUBTARGET_ASM_SPEC \
309 "%{!mno-abicalls: %{!fno-PIC:%{!fno-pic:-KPIC}}}"
311 /* -G is incompatible with -KPIC which is the default, so only allow objects
312 in the small data section if the user explicitly asks for it. */
314 #undef MIPS_DEFAULT_GVALUE
315 #define MIPS_DEFAULT_GVALUE 0
317 /* If defined, a C expression whose value is a string containing the
318 assembler operation to identify the following data as
319 uninitialized global data. If not defined, and neither
320 `ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined,
321 uninitialized global data will be output in the data section if
322 `-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be
324 #undef BSS_SECTION_ASM_OP
325 #define BSS_SECTION_ASM_OP "\t.section\t.bss"
327 /* Like `ASM_OUTPUT_BSS' except takes the required alignment as a
328 separate, explicit argument. If you define this macro, it is used
329 in place of `ASM_OUTPUT_BSS', and gives you more flexibility in
330 handling the required alignment of the variable. The alignment is
331 specified as the number of bits.
333 Try to use function `asm_output_aligned_bss' defined in file
334 `varasm.c' when defining this macro. */
335 #undef ASM_OUTPUT_ALIGNED_BSS
336 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
337 asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
339 /* Standard AT&T UNIX 'as' local label spelling. */
340 #undef LOCAL_LABEL_PREFIX
341 #define LOCAL_LABEL_PREFIX "."
343 /* Currently we don't support 128bit long doubles, so for now we force
345 #undef LONG_DOUBLE_TYPE_SIZE
346 #define LONG_DOUBLE_TYPE_SIZE 64
349 #undef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
350 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64
353 /************************[ Debugger stuff ]*********************************/
354 #undef DBX_DEBUGGING_INFO
355 #undef MIPS_DEBUGGING_INFO