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e75b25e7 | 1 | /* Definitions of target machine for GNU compiler. MIPS version. |
214be03f | 2 | Copyright (C) 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998 |
2d2a50c3 | 3 | 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. |
ae3e1bb4 RK |
4 | Contributed by A. Lichnewsky (lich@inria.inria.fr). |
5 | Changed by Michael Meissner (meissner@osf.org). | |
6 | 64 bit r4000 support by Ian Lance Taylor (ian@cygnus.com) and | |
7 | Brendan Eich (brendan@microunity.com). | |
e75b25e7 MM |
8 | |
9 | This file is part of GNU CC. | |
10 | ||
11 | GNU CC is free software; you can redistribute it and/or modify | |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 2, or (at your option) | |
14 | any later version. | |
15 | ||
16 | GNU CC is distributed in the hope that it will be useful, | |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
22 | along with GNU CC; see the file COPYING. If not, write to | |
75fe0c5e RK |
23 | the Free Software Foundation, 59 Temple Place - Suite 330, |
24 | Boston, MA 02111-1307, USA. */ | |
e75b25e7 MM |
25 | |
26 | ||
e75b25e7 MM |
27 | /* Standard GCC variables that we reference. */ |
28 | ||
0fb5ac6f | 29 | extern char call_used_regs[]; |
0fb5ac6f | 30 | extern int may_call_alloca; |
0fb5ac6f MM |
31 | extern char **save_argv; |
32 | extern int target_flags; | |
e75b25e7 MM |
33 | |
34 | /* MIPS external variables defined in mips.c. */ | |
35 | ||
36 | /* comparison type */ | |
37 | enum cmp_type { | |
876c09d3 JW |
38 | CMP_SI, /* compare four byte integers */ |
39 | CMP_DI, /* compare eight byte integers */ | |
e75b25e7 MM |
40 | CMP_SF, /* compare single precision floats */ |
41 | CMP_DF, /* compare double precision floats */ | |
42 | CMP_MAX /* max comparison type */ | |
43 | }; | |
44 | ||
e75b25e7 MM |
45 | /* Which processor to schedule for. Since there is no difference between |
46 | a R2000 and R3000 in terms of the scheduler, we collapse them into | |
4a392643 RS |
47 | just an R3000. The elements of the enumeration must match exactly |
48 | the cpu attribute in the mips.md machine description. */ | |
e75b25e7 MM |
49 | |
50 | enum processor_type { | |
51 | PROCESSOR_DEFAULT, | |
fcc11c35 CD |
52 | PROCESSOR_4KC, |
53 | PROCESSOR_5KC, | |
54 | PROCESSOR_20KC, | |
55 | PROCESSOR_M4K, | |
e75b25e7 | 56 | PROCESSOR_R3000, |
e9a25f70 | 57 | PROCESSOR_R3900, |
e75b25e7 | 58 | PROCESSOR_R6000, |
876c09d3 | 59 | PROCESSOR_R4000, |
00b3e052 | 60 | PROCESSOR_R4100, |
5ce6f47b | 61 | PROCESSOR_R4111, |
3f7967e3 | 62 | PROCESSOR_R4120, |
00b3e052 | 63 | PROCESSOR_R4300, |
516a2dfd | 64 | PROCESSOR_R4600, |
053665d7 | 65 | PROCESSOR_R4650, |
b8eb88d0 | 66 | PROCESSOR_R5000, |
5ce6f47b EC |
67 | PROCESSOR_R5400, |
68 | PROCESSOR_R5500, | |
0e5a4ad8 | 69 | PROCESSOR_R8000, |
fcc11c35 CD |
70 | PROCESSOR_SB1, |
71 | PROCESSOR_SR71000 | |
e75b25e7 MM |
72 | }; |
73 | ||
4a392643 | 74 | /* Recast the cpu class to be the cpu attribute. */ |
919b1aec | 75 | #define mips_cpu_attr ((enum attr_cpu)mips_tune) |
4a392643 | 76 | |
ac8ab9fe RS |
77 | /* Which ABI to use. ABI_32 (original 32, or o32), ABI_N32 (n32), |
78 | ABI_64 (n64) are all defined by SGI. ABI_O64 is o32 extended | |
79 | to work on a 64 bit machine. */ | |
b2d8cf33 | 80 | |
04bd620d JW |
81 | #define ABI_32 0 |
82 | #define ABI_N32 1 | |
83 | #define ABI_64 2 | |
84 | #define ABI_EABI 3 | |
a53f72db | 85 | #define ABI_O64 4 |
0e5a4ad8 | 86 | |
45ceb85d RS |
87 | /* Whether to emit abicalls code sequences or not. */ |
88 | ||
89 | enum mips_abicalls_type { | |
90 | MIPS_ABICALLS_NO, | |
91 | MIPS_ABICALLS_YES | |
92 | }; | |
93 | ||
94 | /* Recast the abicalls class to be the abicalls attribute. */ | |
95 | #define mips_abicalls_attr ((enum attr_abicalls)mips_abicalls) | |
96 | ||
05713b80 | 97 | /* Information about one recognized processor. Defined here for the |
a27fb29b RS |
98 | benefit of TARGET_CPU_CPP_BUILTINS. */ |
99 | struct mips_cpu_info { | |
100 | /* The 'canonical' name of the processor as far as GCC is concerned. | |
101 | It's typically a manufacturer's prefix followed by a numerical | |
102 | designation. It should be lower case. */ | |
103 | const char *name; | |
104 | ||
105 | /* The internal processor number that most closely matches this | |
106 | entry. Several processors can have the same value, if there's no | |
107 | difference between them from GCC's point of view. */ | |
108 | enum processor_type cpu; | |
109 | ||
110 | /* The ISA level that the processor implements. */ | |
111 | int isa; | |
112 | }; | |
113 | ||
987ba558 | 114 | extern char mips_reg_names[][8]; /* register names (a0 vs. $4). */ |
f540a7d3 | 115 | extern char mips_print_operand_punct[256]; /* print_operand punctuation chars */ |
e2fe6aba | 116 | extern const char *current_function_file; /* filename current function is in */ |
e75b25e7 MM |
117 | extern int num_source_filenames; /* current .file # */ |
118 | extern int inside_function; /* != 0 if inside of a function */ | |
119 | extern int ignore_line_number; /* != 0 if we are to ignore next .loc */ | |
120 | extern int file_in_function_warning; /* warning given about .file in func */ | |
121 | extern int sdb_label_count; /* block start/end next label # */ | |
a642a781 | 122 | extern int sdb_begin_function_line; /* Starting Line of current function */ |
e75b25e7 | 123 | extern int mips_section_threshold; /* # bytes of data/sdata cutoff */ |
e75b25e7 MM |
124 | extern int sym_lineno; /* sgi next label # for each stmt */ |
125 | extern int set_noreorder; /* # of nested .set noreorder's */ | |
126 | extern int set_nomacro; /* # of nested .set nomacro's */ | |
127 | extern int set_noat; /* # of nested .set noat's */ | |
128 | extern int set_volatile; /* # of nested .set volatile's */ | |
e75b25e7 MM |
129 | extern int mips_branch_likely; /* emit 'l' after br (branch likely) */ |
130 | extern int mips_dbx_regno[]; /* Map register # to debug register # */ | |
e2500fed | 131 | extern GTY(()) rtx branch_cmp[2]; /* operands for compare */ |
e75b25e7 | 132 | extern enum cmp_type branch_type; /* what type of branch to use */ |
7dac2f89 EC |
133 | extern enum processor_type mips_arch; /* which cpu to codegen for */ |
134 | extern enum processor_type mips_tune; /* which cpu to schedule for */ | |
45ceb85d | 135 | extern enum mips_abicalls_type mips_abicalls;/* for svr4 abi pic calls */ |
e75b25e7 | 136 | extern int mips_isa; /* architectural level */ |
2bcb2ab3 GK |
137 | extern int mips16; /* whether generating mips16 code */ |
138 | extern int mips16_hard_float; /* mips16 without -msoft-float */ | |
139 | extern int mips_entry; /* generate entry/exit for mips16 */ | |
7dac2f89 EC |
140 | extern const char *mips_arch_string; /* for -march=<xxx> */ |
141 | extern const char *mips_tune_string; /* for -mtune=<xxx> */ | |
e2fe6aba KG |
142 | extern const char *mips_isa_string; /* for -mips{1,2,3,4} */ |
143 | extern const char *mips_abi_string; /* for -mabi={32,n32,64} */ | |
144 | extern const char *mips_entry_string; /* for -mentry */ | |
145 | extern const char *mips_no_mips16_string;/* for -mno-mips16 */ | |
d490e8ad | 146 | extern const char *mips_cache_flush_func;/* for -mflush-func= and -mno-flush-func */ |
2bcb2ab3 | 147 | extern int mips_string_length; /* length of strings for mips16 */ |
a27fb29b RS |
148 | extern const struct mips_cpu_info mips_cpu_info_table[]; |
149 | extern const struct mips_cpu_info *mips_arch_info; | |
150 | extern const struct mips_cpu_info *mips_tune_info; | |
e75b25e7 | 151 | |
0fb5ac6f | 152 | /* Functions to change what output section we are using. */ |
bd9f1972 | 153 | extern void sdata_section PARAMS ((void)); |
cc8f5ec0 | 154 | extern void sbss_section PARAMS ((void)); |
e75b25e7 | 155 | |
3a6ee9f4 MM |
156 | /* Macros to silence warnings about numbers being signed in traditional |
157 | C and unsigned in ISO C when compiled on 32-bit hosts. */ | |
158 | ||
159 | #define BITMASK_HIGH (((unsigned long)1) << 31) /* 0x80000000 */ | |
160 | #define BITMASK_UPPER16 ((unsigned long)0xffff << 16) /* 0xffff0000 */ | |
161 | #define BITMASK_LOWER16 ((unsigned long)0xffff) /* 0x0000ffff */ | |
162 | ||
149e4e00 MM |
163 | \f |
164 | /* Run-time compilation parameters selecting different hardware subsets. */ | |
165 | ||
166 | /* Macros used in the machine description to test the flags. */ | |
167 | ||
168 | /* Bits for real switches */ | |
6d81ba45 CD |
169 | #define MASK_INT64 0x00000001 /* ints are 64 bits */ |
170 | #define MASK_LONG64 0x00000002 /* longs are 64 bits */ | |
171 | #define MASK_SPLIT_ADDR 0x00000004 /* Address splitting is enabled. */ | |
172 | #define MASK_GPOPT 0x00000008 /* Optimize for global pointer */ | |
173 | #define MASK_GAS 0x00000010 /* Gas used instead of MIPS as */ | |
174 | #define MASK_NAME_REGS 0x00000020 /* Use MIPS s/w reg name convention */ | |
f29d1b66 | 175 | #define MASK_EXPLICIT_RELOCS 0x00000040 /* Use relocation operators. */ |
6d81ba45 CD |
176 | #define MASK_MEMCPY 0x00000080 /* call memcpy instead of inline code*/ |
177 | #define MASK_SOFT_FLOAT 0x00000100 /* software floating point */ | |
178 | #define MASK_FLOAT64 0x00000200 /* fp registers are 64 bits */ | |
179 | #define MASK_ABICALLS 0x00000400 /* emit .abicalls/.cprestore/.cpload */ | |
33005162 | 180 | #define MASK_UNUSED1 0x00000800 /* Unused Mask. */ |
6d81ba45 CD |
181 | #define MASK_LONG_CALLS 0x00001000 /* Always call through a register */ |
182 | #define MASK_64BIT 0x00002000 /* Use 64 bit GP registers and insns */ | |
183 | #define MASK_EMBEDDED_PIC 0x00004000 /* Generate embedded PIC code */ | |
365c6a0b | 184 | #define MASK_EMBEDDED_DATA 0x00008000 /* Reduce RAM usage, not fast code */ |
6d81ba45 CD |
185 | #define MASK_BIG_ENDIAN 0x00010000 /* Generate big endian code */ |
186 | #define MASK_SINGLE_FLOAT 0x00020000 /* Only single precision FPU. */ | |
187 | #define MASK_MAD 0x00040000 /* Generate mad/madu as on 4650. */ | |
188 | #define MASK_4300_MUL_FIX 0x00080000 /* Work-around early Vr4300 CPU bug */ | |
7dac2f89 | 189 | #define MASK_MIPS16 0x00100000 /* Generate mips16 code */ |
6d81ba45 | 190 | #define MASK_NO_CHECK_ZERO_DIV \ |
7dac2f89 | 191 | 0x00200000 /* divide by zero checking */ |
32ad6a47 RS |
192 | #define MASK_BRANCHLIKELY 0x00400000 /* Generate Branch Likely |
193 | instructions. */ | |
6d81ba45 | 194 | #define MASK_UNINIT_CONST_IN_RODATA \ |
7dac2f89 | 195 | 0x00800000 /* Store uninitialized |
6d81ba45 | 196 | consts in rodata */ |
13fac94a GK |
197 | #define MASK_NO_FUSED_MADD 0x01000000 /* Don't generate floating point |
198 | multiply-add operations. */ | |
149e4e00 MM |
199 | |
200 | /* Debug switches, not documented */ | |
6d81ba45 CD |
201 | #define MASK_DEBUG 0 /* unused */ |
202 | #define MASK_DEBUG_A 0 /* don't allow <label>($reg) addrs */ | |
203 | #define MASK_DEBUG_B 0 /* GO_IF_LEGITIMATE_ADDRESS debug */ | |
987ba558 | 204 | #define MASK_DEBUG_C 0 /* don't expand seq, etc. */ |
08c2951c | 205 | #define MASK_DEBUG_D 0 /* don't do define_split's */ |
e4f5c5d6 | 206 | #define MASK_DEBUG_E 0 /* function_arg debug */ |
6d81ba45 | 207 | #define MASK_DEBUG_F 0 /* ??? */ |
2bcb2ab3 | 208 | #define MASK_DEBUG_G 0 /* don't support 64 bit arithmetic */ |
e4f5c5d6 | 209 | #define MASK_DEBUG_I 0 /* unused */ |
149e4e00 | 210 | |
6d81ba45 CD |
211 | /* Dummy switches used only in specs */ |
212 | #define MASK_MIPS_TFILE 0 /* flag for mips-tfile usage */ | |
213 | ||
149e4e00 MM |
214 | /* r4000 64 bit sizes */ |
215 | #define TARGET_INT64 (target_flags & MASK_INT64) | |
216 | #define TARGET_LONG64 (target_flags & MASK_LONG64) | |
149e4e00 | 217 | #define TARGET_FLOAT64 (target_flags & MASK_FLOAT64) |
876c09d3 | 218 | #define TARGET_64BIT (target_flags & MASK_64BIT) |
149e4e00 | 219 | |
5ef37cd3 JW |
220 | /* Mips vs. GNU linker */ |
221 | #define TARGET_SPLIT_ADDRESSES (target_flags & MASK_SPLIT_ADDR) | |
222 | ||
149e4e00 MM |
223 | /* Mips vs. GNU assembler */ |
224 | #define TARGET_GAS (target_flags & MASK_GAS) | |
6d81ba45 | 225 | #define TARGET_MIPS_AS (!TARGET_GAS) |
149e4e00 | 226 | |
6d81ba45 | 227 | /* Debug Modes */ |
149e4e00 MM |
228 | #define TARGET_DEBUG_MODE (target_flags & MASK_DEBUG) |
229 | #define TARGET_DEBUG_A_MODE (target_flags & MASK_DEBUG_A) | |
230 | #define TARGET_DEBUG_B_MODE (target_flags & MASK_DEBUG_B) | |
231 | #define TARGET_DEBUG_C_MODE (target_flags & MASK_DEBUG_C) | |
232 | #define TARGET_DEBUG_D_MODE (target_flags & MASK_DEBUG_D) | |
233 | #define TARGET_DEBUG_E_MODE (target_flags & MASK_DEBUG_E) | |
234 | #define TARGET_DEBUG_F_MODE (target_flags & MASK_DEBUG_F) | |
235 | #define TARGET_DEBUG_G_MODE (target_flags & MASK_DEBUG_G) | |
149e4e00 | 236 | #define TARGET_DEBUG_I_MODE (target_flags & MASK_DEBUG_I) |
149e4e00 MM |
237 | |
238 | /* Reg. Naming in .s ($21 vs. $a0) */ | |
239 | #define TARGET_NAME_REGS (target_flags & MASK_NAME_REGS) | |
240 | ||
241 | /* Optimize for Sdata/Sbss */ | |
242 | #define TARGET_GP_OPT (target_flags & MASK_GPOPT) | |
243 | ||
149e4e00 MM |
244 | /* call memcpy instead of inline code */ |
245 | #define TARGET_MEMCPY (target_flags & MASK_MEMCPY) | |
246 | ||
247 | /* .abicalls, etc from Pyramid V.4 */ | |
248 | #define TARGET_ABICALLS (target_flags & MASK_ABICALLS) | |
249 | ||
149e4e00 MM |
250 | /* software floating point */ |
251 | #define TARGET_SOFT_FLOAT (target_flags & MASK_SOFT_FLOAT) | |
252 | #define TARGET_HARD_FLOAT (! TARGET_SOFT_FLOAT) | |
253 | ||
254 | /* always call through a register */ | |
255 | #define TARGET_LONG_CALLS (target_flags & MASK_LONG_CALLS) | |
256 | ||
e0bfcea5 ILT |
257 | /* generate embedded PIC code; |
258 | requires gas. */ | |
259 | #define TARGET_EMBEDDED_PIC (target_flags & MASK_EMBEDDED_PIC) | |
260 | ||
365c6a0b JW |
261 | /* for embedded systems, optimize for |
262 | reduced RAM space instead of for | |
263 | fastest code. */ | |
264 | #define TARGET_EMBEDDED_DATA (target_flags & MASK_EMBEDDED_DATA) | |
265 | ||
919509ce DN |
266 | /* always store uninitialized const |
267 | variables in rodata, requires | |
987ba558 | 268 | TARGET_EMBEDDED_DATA. */ |
919509ce DN |
269 | #define TARGET_UNINIT_CONST_IN_RODATA (target_flags & MASK_UNINIT_CONST_IN_RODATA) |
270 | ||
96abdcb1 ILT |
271 | /* generate big endian code. */ |
272 | #define TARGET_BIG_ENDIAN (target_flags & MASK_BIG_ENDIAN) | |
273 | ||
46299de9 ILT |
274 | #define TARGET_SINGLE_FLOAT (target_flags & MASK_SINGLE_FLOAT) |
275 | #define TARGET_DOUBLE_FLOAT (! TARGET_SINGLE_FLOAT) | |
276 | ||
277 | #define TARGET_MAD (target_flags & MASK_MAD) | |
278 | ||
13fac94a GK |
279 | #define TARGET_FUSED_MADD (! (target_flags & MASK_NO_FUSED_MADD)) |
280 | ||
00b3e052 JW |
281 | #define TARGET_4300_MUL_FIX (target_flags & MASK_4300_MUL_FIX) |
282 | ||
32ad6a47 | 283 | #define TARGET_CHECK_ZERO_DIV (!(target_flags & MASK_NO_CHECK_ZERO_DIV)) |
08c2951c | 284 | |
af34e51e CD |
285 | #define TARGET_BRANCHLIKELY (target_flags & MASK_BRANCHLIKELY) |
286 | ||
cafe096b EC |
287 | |
288 | /* True if we should use NewABI-style relocation operators for | |
289 | symbolic addresses. This is never true for mips16 code, | |
290 | which has its own conventions. */ | |
291 | ||
292 | #define TARGET_EXPLICIT_RELOCS (target_flags & MASK_EXPLICIT_RELOCS) | |
293 | ||
294 | ||
cafe096b EC |
295 | /* True if the call patterns should be split into a jalr followed by |
296 | an instruction to restore $gp. This is only ever true for SVR4 PIC, | |
297 | in which $gp is call-clobbered. It is only safe to split the load | |
298 | from the call when every use of $gp is explicit. */ | |
299 | ||
300 | #define TARGET_SPLIT_CALLS \ | |
301 | (TARGET_EXPLICIT_RELOCS && TARGET_ABICALLS && !TARGET_NEWABI) | |
302 | ||
303 | /* True if we can optimize sibling calls. For simplicity, we only | |
304 | handle cases in which call_insn_operand will reject invalid | |
305 | sibcall addresses. There are two cases in which this isn't true: | |
306 | ||
307 | - TARGET_MIPS16. call_insn_operand accepts constant addresses | |
308 | but there is no direct jump instruction. It isn't worth | |
309 | using sibling calls in this case anyway; they would usually | |
310 | be longer than normal calls. | |
311 | ||
312 | - TARGET_ABICALLS && !TARGET_EXPLICIT_RELOCS. call_insn_operand | |
313 | accepts global constants, but "jr $25" is the only allowed | |
314 | sibcall. */ | |
315 | ||
316 | #define TARGET_SIBCALLS \ | |
317 | (!TARGET_MIPS16 && (!TARGET_ABICALLS || TARGET_EXPLICIT_RELOCS)) | |
318 | ||
319 | /* True if .gpword or .gpdword should be used for switch tables. | |
320 | Not all SGI assemblers support this. */ | |
321 | ||
322 | #define TARGET_GPWORD (TARGET_ABICALLS && (!TARGET_NEWABI || TARGET_GAS)) | |
323 | ||
2bcb2ab3 GK |
324 | /* Generate mips16 code */ |
325 | #define TARGET_MIPS16 (target_flags & MASK_MIPS16) | |
326 | ||
ce3649d2 EC |
327 | /* Generic ISA defines. */ |
328 | #define ISA_MIPS1 (mips_isa == 1) | |
329 | #define ISA_MIPS2 (mips_isa == 2) | |
330 | #define ISA_MIPS3 (mips_isa == 3) | |
331 | #define ISA_MIPS4 (mips_isa == 4) | |
332 | #define ISA_MIPS32 (mips_isa == 32) | |
2d2a50c3 | 333 | #define ISA_MIPS32R2 (mips_isa == 33) |
ce3649d2 EC |
334 | #define ISA_MIPS64 (mips_isa == 64) |
335 | ||
7dac2f89 EC |
336 | /* Architecture target defines. */ |
337 | #define TARGET_MIPS3900 (mips_arch == PROCESSOR_R3900) | |
338 | #define TARGET_MIPS4000 (mips_arch == PROCESSOR_R4000) | |
3ccbe819 | 339 | #define TARGET_MIPS4100 (mips_arch == PROCESSOR_R4100) |
3f7967e3 | 340 | #define TARGET_MIPS4120 (mips_arch == PROCESSOR_R4120) |
7dac2f89 | 341 | #define TARGET_MIPS4300 (mips_arch == PROCESSOR_R4300) |
2d2a50c3 CD |
342 | #define TARGET_MIPS4KC (mips_arch == PROCESSOR_4KC) |
343 | #define TARGET_MIPS5KC (mips_arch == PROCESSOR_5KC) | |
5ce6f47b EC |
344 | #define TARGET_MIPS5400 (mips_arch == PROCESSOR_R5400) |
345 | #define TARGET_MIPS5500 (mips_arch == PROCESSOR_R5500) | |
5b552f76 | 346 | #define TARGET_SB1 (mips_arch == PROCESSOR_SB1) |
5ce6f47b | 347 | #define TARGET_SR71K (mips_arch == PROCESSOR_SR71000) |
7dac2f89 EC |
348 | |
349 | /* Scheduling target defines. */ | |
7a38df19 EC |
350 | #define TUNE_MIPS3000 (mips_tune == PROCESSOR_R3000) |
351 | #define TUNE_MIPS3900 (mips_tune == PROCESSOR_R3900) | |
352 | #define TUNE_MIPS4000 (mips_tune == PROCESSOR_R4000) | |
353 | #define TUNE_MIPS5000 (mips_tune == PROCESSOR_R5000) | |
5ce6f47b EC |
354 | #define TUNE_MIPS5400 (mips_tune == PROCESSOR_R5400) |
355 | #define TUNE_MIPS5500 (mips_tune == PROCESSOR_R5500) | |
7a38df19 | 356 | #define TUNE_MIPS6000 (mips_tune == PROCESSOR_R6000) |
5b552f76 | 357 | #define TUNE_SB1 (mips_tune == PROCESSOR_SB1) |
5ce6f47b | 358 | #define TUNE_SR71K (mips_tune == PROCESSOR_SR71000) |
7dac2f89 | 359 | |
cafe096b EC |
360 | #define TARGET_NEWABI (mips_abi == ABI_N32 || mips_abi == ABI_64) |
361 | ||
a27fb29b RS |
362 | /* Define preprocessor macros for the -march and -mtune options. |
363 | PREFIX is either _MIPS_ARCH or _MIPS_TUNE, INFO is the selected | |
364 | processor. If INFO's canonical name is "foo", define PREFIX to | |
365 | be "foo", and define an additional macro PREFIX_FOO. */ | |
366 | #define MIPS_CPP_SET_PROCESSOR(PREFIX, INFO) \ | |
367 | do \ | |
368 | { \ | |
369 | char *macro, *p; \ | |
370 | \ | |
371 | macro = concat ((PREFIX), "_", (INFO)->name, NULL); \ | |
372 | for (p = macro; *p != 0; p++) \ | |
373 | *p = TOUPPER (*p); \ | |
374 | \ | |
375 | builtin_define (macro); \ | |
376 | builtin_define_with_value ((PREFIX), (INFO)->name, 1); \ | |
377 | free (macro); \ | |
378 | } \ | |
379 | while (0) | |
380 | ||
ce3649d2 EC |
381 | /* Target CPU builtins. */ |
382 | #define TARGET_CPU_CPP_BUILTINS() \ | |
383 | do \ | |
384 | { \ | |
385 | builtin_assert ("cpu=mips"); \ | |
386 | builtin_define ("__mips__"); \ | |
387 | builtin_define ("_mips"); \ | |
388 | \ | |
389 | /* We do this here because __mips is defined below \ | |
390 | and so we can't use builtin_define_std. */ \ | |
391 | if (!flag_iso) \ | |
392 | builtin_define ("mips"); \ | |
393 | \ | |
a27fb29b RS |
394 | /* Treat _R3000 and _R4000 like register-size defines, \ |
395 | which is how they've historically been used. */ \ | |
ce3649d2 EC |
396 | if (TARGET_64BIT) \ |
397 | { \ | |
398 | builtin_define ("__mips64"); \ | |
ce3649d2 EC |
399 | builtin_define_std ("R4000"); \ |
400 | builtin_define ("_R4000"); \ | |
401 | } \ | |
402 | else \ | |
403 | { \ | |
ce3649d2 EC |
404 | builtin_define_std ("R3000"); \ |
405 | builtin_define ("_R3000"); \ | |
406 | } \ | |
407 | if (TARGET_FLOAT64) \ | |
408 | builtin_define ("__mips_fpr=64"); \ | |
409 | else \ | |
410 | builtin_define ("__mips_fpr=32"); \ | |
411 | \ | |
412 | if (TARGET_MIPS16) \ | |
413 | builtin_define ("__mips16"); \ | |
414 | \ | |
a27fb29b RS |
415 | MIPS_CPP_SET_PROCESSOR ("_MIPS_ARCH", mips_arch_info); \ |
416 | MIPS_CPP_SET_PROCESSOR ("_MIPS_TUNE", mips_tune_info); \ | |
417 | \ | |
ce3649d2 EC |
418 | if (ISA_MIPS1) \ |
419 | { \ | |
420 | builtin_define ("__mips=1"); \ | |
421 | builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS1"); \ | |
422 | } \ | |
423 | else if (ISA_MIPS2) \ | |
424 | { \ | |
425 | builtin_define ("__mips=2"); \ | |
426 | builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS2"); \ | |
427 | } \ | |
428 | else if (ISA_MIPS3) \ | |
429 | { \ | |
430 | builtin_define ("__mips=3"); \ | |
431 | builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS3"); \ | |
432 | } \ | |
433 | else if (ISA_MIPS4) \ | |
434 | { \ | |
435 | builtin_define ("__mips=4"); \ | |
436 | builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS4"); \ | |
437 | } \ | |
438 | else if (ISA_MIPS32) \ | |
439 | { \ | |
440 | builtin_define ("__mips=32"); \ | |
2d2a50c3 CD |
441 | builtin_define ("__mips_isa_rev=1"); \ |
442 | builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS32"); \ | |
443 | } \ | |
444 | else if (ISA_MIPS32R2) \ | |
445 | { \ | |
446 | builtin_define ("__mips=32"); \ | |
447 | builtin_define ("__mips_isa_rev=2"); \ | |
ce3649d2 EC |
448 | builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS32"); \ |
449 | } \ | |
450 | else if (ISA_MIPS64) \ | |
451 | { \ | |
452 | builtin_define ("__mips=64"); \ | |
2d2a50c3 | 453 | builtin_define ("__mips_isa_rev=1"); \ |
ce3649d2 EC |
454 | builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS64"); \ |
455 | } \ | |
456 | \ | |
457 | if (TARGET_HARD_FLOAT) \ | |
458 | builtin_define ("__mips_hard_float"); \ | |
459 | else if (TARGET_SOFT_FLOAT) \ | |
460 | builtin_define ("__mips_soft_float"); \ | |
461 | \ | |
462 | if (TARGET_SINGLE_FLOAT) \ | |
463 | builtin_define ("__mips_single_float"); \ | |
464 | \ | |
ce3649d2 EC |
465 | if (TARGET_BIG_ENDIAN) \ |
466 | { \ | |
467 | builtin_define_std ("MIPSEB"); \ | |
468 | builtin_define ("_MIPSEB"); \ | |
469 | } \ | |
470 | else \ | |
471 | { \ | |
472 | builtin_define_std ("MIPSEL"); \ | |
473 | builtin_define ("_MIPSEL"); \ | |
474 | } \ | |
475 | \ | |
476 | /* Macros dependent on the C dialect. */ \ | |
477 | if (preprocessing_asm_p ()) \ | |
478 | { \ | |
479 | builtin_define_std ("LANGUAGE_ASSEMBLY"); \ | |
480 | builtin_define ("_LANGUAGE_ASSEMBLY"); \ | |
481 | } \ | |
482 | else if (c_language == clk_c) \ | |
483 | { \ | |
484 | builtin_define_std ("LANGUAGE_C"); \ | |
485 | builtin_define ("_LANGUAGE_C"); \ | |
486 | } \ | |
487 | else if (c_language == clk_cplusplus) \ | |
488 | { \ | |
489 | builtin_define ("_LANGUAGE_C_PLUS_PLUS"); \ | |
490 | builtin_define ("__LANGUAGE_C_PLUS_PLUS"); \ | |
491 | builtin_define ("__LANGUAGE_C_PLUS_PLUS__"); \ | |
492 | } \ | |
2516f236 | 493 | if (flag_objc) \ |
ce3649d2 EC |
494 | { \ |
495 | builtin_define ("_LANGUAGE_OBJECTIVE_C"); \ | |
496 | builtin_define ("__LANGUAGE_OBJECTIVE_C"); \ | |
497 | /* Bizzare, but needed at least for Irix. */ \ | |
498 | builtin_define_std ("LANGUAGE_C"); \ | |
499 | builtin_define ("_LANGUAGE_C"); \ | |
500 | } \ | |
501 | \ | |
502 | if (mips_abi == ABI_EABI) \ | |
503 | builtin_define ("__mips_eabi"); \ | |
504 | \ | |
505 | } while (0) | |
506 | ||
507 | ||
508 | ||
149e4e00 MM |
509 | /* Macro to define tables used to set the flags. |
510 | This is a list in braces of pairs in braces, | |
511 | each pair being { "NAME", VALUE } | |
512 | where VALUE is the bits to set or minus the bits to clear. | |
513 | An empty string NAME is used to identify the default VALUE. */ | |
514 | ||
515 | #define TARGET_SWITCHES \ | |
516 | { \ | |
cafe096b | 517 | SUBTARGET_TARGET_SWITCHES \ |
a127db75 | 518 | {"int64", MASK_INT64 | MASK_LONG64, \ |
047142d3 | 519 | N_("Use 64-bit int type")}, \ |
a127db75 | 520 | {"long64", MASK_LONG64, \ |
047142d3 | 521 | N_("Use 64-bit long type")}, \ |
a127db75 | 522 | {"long32", -(MASK_LONG64 | MASK_INT64), \ |
047142d3 | 523 | N_("Use 32-bit long type")}, \ |
a127db75 | 524 | {"split-addresses", MASK_SPLIT_ADDR, \ |
047142d3 | 525 | N_("Optimize lui/addiu address loads")}, \ |
a127db75 | 526 | {"no-split-addresses", -MASK_SPLIT_ADDR, \ |
047142d3 | 527 | N_("Don't optimize lui/addiu address loads")}, \ |
a127db75 | 528 | {"mips-as", -MASK_GAS, \ |
047142d3 | 529 | N_("Use MIPS as")}, \ |
a127db75 | 530 | {"gas", MASK_GAS, \ |
047142d3 | 531 | N_("Use GNU as")}, \ |
a127db75 | 532 | {"rnames", MASK_NAME_REGS, \ |
047142d3 | 533 | N_("Use symbolic register names")}, \ |
a127db75 | 534 | {"no-rnames", -MASK_NAME_REGS, \ |
047142d3 | 535 | N_("Don't use symbolic register names")}, \ |
a127db75 | 536 | {"gpOPT", MASK_GPOPT, \ |
047142d3 | 537 | N_("Use GP relative sdata/sbss sections")}, \ |
a127db75 | 538 | {"gpopt", MASK_GPOPT, \ |
047142d3 | 539 | N_("Use GP relative sdata/sbss sections")}, \ |
a127db75 | 540 | {"no-gpOPT", -MASK_GPOPT, \ |
047142d3 | 541 | N_("Don't use GP relative sdata/sbss sections")}, \ |
a127db75 | 542 | {"no-gpopt", -MASK_GPOPT, \ |
047142d3 | 543 | N_("Don't use GP relative sdata/sbss sections")}, \ |
f29d1b66 RS |
544 | {"stats", 0, \ |
545 | N_("Output compiler statistics (now ignored)")}, \ | |
546 | {"no-stats", 0, \ | |
047142d3 | 547 | N_("Don't output compiler statistics")}, \ |
a127db75 | 548 | {"memcpy", MASK_MEMCPY, \ |
047142d3 | 549 | N_("Don't optimize block moves")}, \ |
a127db75 | 550 | {"no-memcpy", -MASK_MEMCPY, \ |
047142d3 | 551 | N_("Optimize block moves")}, \ |
a127db75 | 552 | {"mips-tfile", MASK_MIPS_TFILE, \ |
047142d3 | 553 | N_("Use mips-tfile asm postpass")}, \ |
a127db75 | 554 | {"no-mips-tfile", -MASK_MIPS_TFILE, \ |
047142d3 | 555 | N_("Don't use mips-tfile asm postpass")}, \ |
a127db75 | 556 | {"soft-float", MASK_SOFT_FLOAT, \ |
047142d3 | 557 | N_("Use software floating point")}, \ |
a127db75 | 558 | {"hard-float", -MASK_SOFT_FLOAT, \ |
047142d3 | 559 | N_("Use hardware floating point")}, \ |
a127db75 | 560 | {"fp64", MASK_FLOAT64, \ |
047142d3 | 561 | N_("Use 64-bit FP registers")}, \ |
a127db75 | 562 | {"fp32", -MASK_FLOAT64, \ |
047142d3 | 563 | N_("Use 32-bit FP registers")}, \ |
a127db75 | 564 | {"gp64", MASK_64BIT, \ |
047142d3 | 565 | N_("Use 64-bit general registers")}, \ |
a127db75 | 566 | {"gp32", -MASK_64BIT, \ |
047142d3 | 567 | N_("Use 32-bit general registers")}, \ |
a127db75 | 568 | {"abicalls", MASK_ABICALLS, \ |
047142d3 | 569 | N_("Use Irix PIC")}, \ |
a127db75 | 570 | {"no-abicalls", -MASK_ABICALLS, \ |
047142d3 | 571 | N_("Don't use Irix PIC")}, \ |
a127db75 | 572 | {"long-calls", MASK_LONG_CALLS, \ |
047142d3 | 573 | N_("Use indirect calls")}, \ |
a127db75 | 574 | {"no-long-calls", -MASK_LONG_CALLS, \ |
047142d3 | 575 | N_("Don't use indirect calls")}, \ |
a127db75 | 576 | {"embedded-pic", MASK_EMBEDDED_PIC, \ |
047142d3 | 577 | N_("Use embedded PIC")}, \ |
a127db75 | 578 | {"no-embedded-pic", -MASK_EMBEDDED_PIC, \ |
047142d3 | 579 | N_("Don't use embedded PIC")}, \ |
a127db75 | 580 | {"embedded-data", MASK_EMBEDDED_DATA, \ |
047142d3 | 581 | N_("Use ROM instead of RAM")}, \ |
a127db75 | 582 | {"no-embedded-data", -MASK_EMBEDDED_DATA, \ |
047142d3 | 583 | N_("Don't use ROM instead of RAM")}, \ |
919509ce | 584 | {"uninit-const-in-rodata", MASK_UNINIT_CONST_IN_RODATA, \ |
047142d3 | 585 | N_("Put uninitialized constants in ROM (needs -membedded-data)")}, \ |
919509ce | 586 | {"no-uninit-const-in-rodata", -MASK_UNINIT_CONST_IN_RODATA, \ |
047142d3 | 587 | N_("Don't put uninitialized constants in ROM")}, \ |
a127db75 | 588 | {"eb", MASK_BIG_ENDIAN, \ |
047142d3 | 589 | N_("Use big-endian byte order")}, \ |
a127db75 | 590 | {"el", -MASK_BIG_ENDIAN, \ |
047142d3 | 591 | N_("Use little-endian byte order")}, \ |
a127db75 | 592 | {"single-float", MASK_SINGLE_FLOAT, \ |
047142d3 | 593 | N_("Use single (32-bit) FP only")}, \ |
a127db75 | 594 | {"double-float", -MASK_SINGLE_FLOAT, \ |
047142d3 | 595 | N_("Don't use single (32-bit) FP only")}, \ |
a127db75 | 596 | {"mad", MASK_MAD, \ |
047142d3 | 597 | N_("Use multiply accumulate")}, \ |
a127db75 | 598 | {"no-mad", -MASK_MAD, \ |
047142d3 | 599 | N_("Don't use multiply accumulate")}, \ |
13fac94a GK |
600 | {"no-fused-madd", MASK_NO_FUSED_MADD, \ |
601 | N_("Don't generate fused multiply/add instructions")}, \ | |
602 | {"fused-madd", -MASK_NO_FUSED_MADD, \ | |
603 | N_("Generate fused multiply/add instructions")}, \ | |
a127db75 | 604 | {"fix4300", MASK_4300_MUL_FIX, \ |
047142d3 | 605 | N_("Work around early 4300 hardware bug")}, \ |
a127db75 | 606 | {"no-fix4300", -MASK_4300_MUL_FIX, \ |
047142d3 | 607 | N_("Don't work around early 4300 hardware bug")}, \ |
a127db75 | 608 | {"check-zero-division",-MASK_NO_CHECK_ZERO_DIV, \ |
047142d3 | 609 | N_("Trap on integer divide by zero")}, \ |
a127db75 | 610 | {"no-check-zero-division", MASK_NO_CHECK_ZERO_DIV, \ |
047142d3 | 611 | N_("Don't trap on integer divide by zero")}, \ |
af34e51e CD |
612 | { "branch-likely", MASK_BRANCHLIKELY, \ |
613 | N_("Use Branch Likely instructions, overriding default for arch")}, \ | |
614 | { "no-branch-likely", -MASK_BRANCHLIKELY, \ | |
615 | N_("Don't use Branch Likely instructions, overriding default for arch")}, \ | |
cafe096b EC |
616 | {"explicit-relocs", MASK_EXPLICIT_RELOCS, \ |
617 | N_("Use NewABI-style %reloc() assembly operators")}, \ | |
618 | {"no-explicit-relocs", -MASK_EXPLICIT_RELOCS, \ | |
619 | N_("Use assembler macros instead of relocation operators")}, \ | |
a127db75 JW |
620 | {"debug", MASK_DEBUG, \ |
621 | NULL}, \ | |
622 | {"debuga", MASK_DEBUG_A, \ | |
623 | NULL}, \ | |
624 | {"debugb", MASK_DEBUG_B, \ | |
625 | NULL}, \ | |
626 | {"debugc", MASK_DEBUG_C, \ | |
627 | NULL}, \ | |
628 | {"debugd", MASK_DEBUG_D, \ | |
629 | NULL}, \ | |
630 | {"debuge", MASK_DEBUG_E, \ | |
631 | NULL}, \ | |
632 | {"debugf", MASK_DEBUG_F, \ | |
633 | NULL}, \ | |
634 | {"debugg", MASK_DEBUG_G, \ | |
635 | NULL}, \ | |
a127db75 JW |
636 | {"debugi", MASK_DEBUG_I, \ |
637 | NULL}, \ | |
96abdcb1 ILT |
638 | {"", (TARGET_DEFAULT \ |
639 | | TARGET_CPU_DEFAULT \ | |
a127db75 JW |
640 | | TARGET_ENDIAN_DEFAULT), \ |
641 | NULL}, \ | |
7dac2f89 | 642 | } |
149e4e00 MM |
643 | |
644 | /* Default target_flags if no switches are specified */ | |
645 | ||
646 | #ifndef TARGET_DEFAULT | |
647 | #define TARGET_DEFAULT 0 | |
648 | #endif | |
649 | ||
404f986e MM |
650 | #ifndef TARGET_CPU_DEFAULT |
651 | #define TARGET_CPU_DEFAULT 0 | |
652 | #endif | |
653 | ||
96abdcb1 | 654 | #ifndef TARGET_ENDIAN_DEFAULT |
96abdcb1 | 655 | #define TARGET_ENDIAN_DEFAULT MASK_BIG_ENDIAN |
96abdcb1 ILT |
656 | #endif |
657 | ||
a27fb29b | 658 | /* 'from-abi' makes a good default: you get whatever the ABI requires. */ |
ea09f032 | 659 | #ifndef MIPS_ISA_DEFAULT |
a27fb29b RS |
660 | #ifndef MIPS_CPU_STRING_DEFAULT |
661 | #define MIPS_CPU_STRING_DEFAULT "from-abi" | |
662 | #endif | |
ea09f032 GRK |
663 | #endif |
664 | ||
996ed075 JJ |
665 | #ifdef IN_LIBGCC2 |
666 | #undef TARGET_64BIT | |
667 | /* Make this compile time constant for libgcc2 */ | |
668 | #ifdef __mips64 | |
669 | #define TARGET_64BIT 1 | |
670 | #else | |
671 | #define TARGET_64BIT 0 | |
672 | #endif | |
440927ec | 673 | #endif /* IN_LIBGCC2 */ |
996ed075 | 674 | |
cbab8d02 | 675 | #ifndef MULTILIB_ENDIAN_DEFAULT |
7f2e00db | 676 | #if TARGET_ENDIAN_DEFAULT == 0 |
cbab8d02 | 677 | #define MULTILIB_ENDIAN_DEFAULT "EL" |
7f2e00db | 678 | #else |
cbab8d02 GRK |
679 | #define MULTILIB_ENDIAN_DEFAULT "EB" |
680 | #endif | |
7f2e00db | 681 | #endif |
cbab8d02 | 682 | |
ea09f032 | 683 | #ifndef MULTILIB_ISA_DEFAULT |
7ce2fcb9 KG |
684 | # if MIPS_ISA_DEFAULT == 1 |
685 | # define MULTILIB_ISA_DEFAULT "mips1" | |
686 | # else | |
687 | # if MIPS_ISA_DEFAULT == 2 | |
688 | # define MULTILIB_ISA_DEFAULT "mips2" | |
689 | # else | |
690 | # if MIPS_ISA_DEFAULT == 3 | |
691 | # define MULTILIB_ISA_DEFAULT "mips3" | |
692 | # else | |
693 | # if MIPS_ISA_DEFAULT == 4 | |
694 | # define MULTILIB_ISA_DEFAULT "mips4" | |
695 | # else | |
0e5a4ad8 EC |
696 | # if MIPS_ISA_DEFAULT == 32 |
697 | # define MULTILIB_ISA_DEFAULT "mips32" | |
698 | # else | |
2d2a50c3 CD |
699 | # if MIPS_ISA_DEFAULT == 33 |
700 | # define MULTILIB_ISA_DEFAULT "mips32r2" | |
0e5a4ad8 | 701 | # else |
2d2a50c3 CD |
702 | # if MIPS_ISA_DEFAULT == 64 |
703 | # define MULTILIB_ISA_DEFAULT "mips64" | |
704 | # else | |
705 | # define MULTILIB_ISA_DEFAULT "mips1" | |
706 | # endif | |
707 | # endif | |
708 | # endif | |
7ce2fcb9 KG |
709 | # endif |
710 | # endif | |
711 | # endif | |
712 | # endif | |
ea09f032 GRK |
713 | #endif |
714 | ||
cbab8d02 | 715 | #ifndef MULTILIB_DEFAULTS |
a27fb29b RS |
716 | #define MULTILIB_DEFAULTS \ |
717 | { MULTILIB_ENDIAN_DEFAULT, MULTILIB_ISA_DEFAULT, MULTILIB_ABI_DEFAULT } | |
7f2e00db RK |
718 | #endif |
719 | ||
34bcd7fd JW |
720 | /* We must pass -EL to the linker by default for little endian embedded |
721 | targets using linker scripts with a OUTPUT_FORMAT line. Otherwise, the | |
722 | linker will default to using big-endian output files. The OUTPUT_FORMAT | |
723 | line must be in the linker script, otherwise -EB/-EL will not work. */ | |
724 | ||
120dc6cd | 725 | #ifndef ENDIAN_SPEC |
34bcd7fd | 726 | #if TARGET_ENDIAN_DEFAULT == 0 |
ac282977 | 727 | #define ENDIAN_SPEC "%{!EB:%{!meb:-EL}} %{EB|meb:-EB}" |
34bcd7fd | 728 | #else |
ac282977 | 729 | #define ENDIAN_SPEC "%{!EL:%{!mel:-EB}} %{EL|mel:-EL}" |
34bcd7fd JW |
730 | #endif |
731 | #endif | |
732 | ||
149e4e00 MM |
733 | #define TARGET_OPTIONS \ |
734 | { \ | |
b2d8cf33 | 735 | SUBTARGET_TARGET_OPTIONS \ |
8f2e3902 | 736 | { "tune=", &mips_tune_string, \ |
c409ea0d | 737 | N_("Specify CPU for scheduling purposes"), 0}, \ |
7dac2f89 | 738 | { "arch=", &mips_arch_string, \ |
c409ea0d | 739 | N_("Specify CPU for code generation purposes"), 0}, \ |
a27fb29b | 740 | { "abi=", &mips_abi_string, \ |
c409ea0d | 741 | N_("Specify an ABI"), 0}, \ |
a127db75 | 742 | { "ips", &mips_isa_string, \ |
c409ea0d | 743 | N_("Specify a Standard MIPS ISA"), 0}, \ |
a127db75 | 744 | { "entry", &mips_entry_string, \ |
c409ea0d | 745 | N_("Use mips16 entry/exit psuedo ops"), 0}, \ |
a127db75 | 746 | { "no-mips16", &mips_no_mips16_string, \ |
c409ea0d | 747 | N_("Don't use MIPS16 instructions"), 0}, \ |
d490e8ad | 748 | { "no-flush-func", &mips_cache_flush_func, \ |
c409ea0d | 749 | N_("Don't call any cache flush functions"), 0}, \ |
d490e8ad | 750 | { "flush-func=", &mips_cache_flush_func, \ |
c409ea0d | 751 | N_("Specify cache flush function"), 0}, \ |
149e4e00 MM |
752 | } |
753 | ||
b2d8cf33 JW |
754 | /* This is meant to be redefined in the host dependent files. */ |
755 | #define SUBTARGET_TARGET_OPTIONS | |
756 | ||
7816bea0 DJ |
757 | /* Support for a compile-time default CPU, et cetera. The rules are: |
758 | --with-arch is ignored if -march is specified or a -mips is specified | |
759 | (other than -mips16). | |
760 | --with-tune is ignored if -mtune is specified. | |
761 | --with-abi is ignored if -mabi is specified. | |
762 | --with-float is ignored if -mhard-float or -msoft-float are | |
763 | specified. */ | |
764 | #define OPTION_DEFAULT_SPECS \ | |
765 | {"arch", "%{!march=*:%{mips16:-march=%(VALUE)}%{!mips*:-march=%(VALUE)}}" }, \ | |
766 | {"tune", "%{!mtune=*:-mtune=%(VALUE)}" }, \ | |
767 | {"abi", "%{!mabi=*:-mabi=%(VALUE)}" }, \ | |
768 | {"float", "%{!msoft-float:%{!mhard-float:-m%(VALUE)-float}}" } | |
769 | ||
770 | ||
5ce6f47b EC |
771 | #define GENERATE_BRANCHLIKELY (TARGET_BRANCHLIKELY \ |
772 | && !TARGET_SR71K \ | |
773 | && !TARGET_MIPS16) | |
e4f5c5d6 | 774 | |
0e5a4ad8 EC |
775 | /* Generate three-operand multiply instructions for SImode. */ |
776 | #define GENERATE_MULT3_SI ((TARGET_MIPS3900 \ | |
5ce6f47b EC |
777 | || TARGET_MIPS5400 \ |
778 | || TARGET_MIPS5500 \ | |
ce3649d2 | 779 | || ISA_MIPS32 \ |
2d2a50c3 | 780 | || ISA_MIPS32R2 \ |
ce3649d2 | 781 | || ISA_MIPS64) \ |
0e5a4ad8 EC |
782 | && !TARGET_MIPS16) |
783 | ||
784 | /* Generate three-operand multiply instructions for DImode. */ | |
785 | #define GENERATE_MULT3_DI ((TARGET_MIPS3900) \ | |
786 | && !TARGET_MIPS16) | |
e9a25f70 | 787 | |
149e4e00 MM |
788 | /* Macros to decide whether certain features are available or not, |
789 | depending on the instruction set architecture level. */ | |
790 | ||
ce3649d2 | 791 | #define HAVE_SQRT_P() (!ISA_MIPS1) |
1d5d552e | 792 | |
a27fb29b RS |
793 | /* True if the ABI can only work with 64-bit integer registers. We |
794 | generally allow ad-hoc variations for TARGET_SINGLE_FLOAT, but | |
795 | otherwise floating-point registers must also be 64-bit. */ | |
796 | #define ABI_NEEDS_64BIT_REGS (mips_abi == ABI_64 \ | |
797 | || mips_abi == ABI_O64 \ | |
798 | || mips_abi == ABI_N32) | |
799 | ||
800 | /* Likewise for 32-bit regs. */ | |
801 | #define ABI_NEEDS_32BIT_REGS (mips_abi == ABI_32) | |
802 | ||
cafe096b EC |
803 | /* True if symbols are 64 bits wide. At present, n64 is the only |
804 | ABI for which this is true. */ | |
805 | #define ABI_HAS_64BIT_SYMBOLS (mips_abi == ABI_64) | |
806 | ||
987ba558 | 807 | /* ISA has instructions for managing 64 bit fp and gp regs (eg. mips3). */ |
8f2e3902 EC |
808 | #define ISA_HAS_64BIT_REGS (ISA_MIPS3 \ |
809 | || ISA_MIPS4 \ | |
ce3649d2 | 810 | || ISA_MIPS64) |
1d5d552e | 811 | |
987ba558 | 812 | /* ISA has branch likely instructions (eg. mips2). */ |
7dac2f89 EC |
813 | /* Disable branchlikely for tx39 until compare rewrite. They haven't |
814 | been generated up to this point. */ | |
5ce6f47b EC |
815 | #define ISA_HAS_BRANCHLIKELY (!ISA_MIPS1 \ |
816 | && !TARGET_MIPS5500) | |
1d5d552e | 817 | |
987ba558 | 818 | /* ISA has the conditional move instructions introduced in mips4. */ |
ce3649d2 EC |
819 | #define ISA_HAS_CONDMOVE ((ISA_MIPS4 \ |
820 | || ISA_MIPS32 \ | |
2d2a50c3 | 821 | || ISA_MIPS32R2 \ |
ce3649d2 | 822 | || ISA_MIPS64) \ |
5ce6f47b | 823 | && !TARGET_MIPS5500 \ |
ce3649d2 | 824 | && !TARGET_MIPS16) |
76ee8042 | 825 | |
0025b7fa GRK |
826 | /* ISA has just the integer condition move instructions (movn,movz) */ |
827 | #define ISA_HAS_INT_CONDMOVE 0 | |
828 | ||
76ee8042 | 829 | /* ISA has the mips4 FP condition code instructions: FP-compare to CC, |
987ba558 | 830 | branch on CC, and move (both FP and non-FP) on CC. */ |
ce3649d2 EC |
831 | #define ISA_HAS_8CC (ISA_MIPS4 \ |
832 | || ISA_MIPS32 \ | |
2d2a50c3 | 833 | || ISA_MIPS32R2 \ |
ce3649d2 | 834 | || ISA_MIPS64) |
76ee8042 | 835 | |
76ee8042 | 836 | /* This is a catch all for the other new mips4 instructions: indexed load and |
8fff5435 CD |
837 | indexed prefetch instructions, the FP madd and msub instructions, |
838 | and the FP recip and recip sqrt instructions */ | |
12bf26b6 EC |
839 | #define ISA_HAS_FP4 ((ISA_MIPS4 \ |
840 | || ISA_MIPS64) \ | |
ce3649d2 | 841 | && !TARGET_MIPS16) |
76ee8042 | 842 | |
a0b6cdee | 843 | /* ISA has conditional trap instructions. */ |
ce3649d2 EC |
844 | #define ISA_HAS_COND_TRAP (!ISA_MIPS1 \ |
845 | && !TARGET_MIPS16) | |
1d5d552e | 846 | |
12bf26b6 | 847 | /* ISA has integer multiply-accumulate instructions, madd and msub. */ |
ce3649d2 | 848 | #define ISA_HAS_MADD_MSUB ((ISA_MIPS32 \ |
2d2a50c3 | 849 | || ISA_MIPS32R2 \ |
ce3649d2 EC |
850 | || ISA_MIPS64 \ |
851 | ) && !TARGET_MIPS16) | |
0e5a4ad8 | 852 | |
12bf26b6 EC |
853 | /* ISA has floating-point nmadd and nmsub instructions. */ |
854 | #define ISA_HAS_NMADD_NMSUB ((ISA_MIPS4 \ | |
855 | || ISA_MIPS64) \ | |
5ce6f47b | 856 | && (!TARGET_MIPS5400 || TARGET_MAD) \ |
974a3101 | 857 | && ! TARGET_MIPS16) |
149e4e00 | 858 | |
0e5a4ad8 | 859 | /* ISA has count leading zeroes/ones instruction (not implemented). */ |
ce3649d2 | 860 | #define ISA_HAS_CLZ_CLO ((ISA_MIPS32 \ |
2d2a50c3 | 861 | || ISA_MIPS32R2 \ |
ce3649d2 EC |
862 | || ISA_MIPS64 \ |
863 | ) && !TARGET_MIPS16) | |
0e5a4ad8 EC |
864 | |
865 | /* ISA has double-word count leading zeroes/ones instruction (not | |
866 | implemented). */ | |
ce3649d2 EC |
867 | #define ISA_HAS_DCLZ_DCLO (ISA_MIPS64 \ |
868 | && !TARGET_MIPS16) | |
0e5a4ad8 | 869 | |
5ce6f47b EC |
870 | /* ISA has three operand multiply instructions that put |
871 | the high part in an accumulator: mulhi or mulhiu. */ | |
872 | #define ISA_HAS_MULHI (TARGET_MIPS5400 \ | |
873 | || TARGET_MIPS5500 \ | |
874 | || TARGET_SR71K \ | |
875 | ) | |
876 | ||
877 | /* ISA has three operand multiply instructions that | |
878 | negates the result and puts the result in an accumulator. */ | |
879 | #define ISA_HAS_MULS (TARGET_MIPS5400 \ | |
880 | || TARGET_MIPS5500 \ | |
881 | || TARGET_SR71K \ | |
882 | ) | |
883 | ||
884 | /* ISA has three operand multiply instructions that subtracts the | |
885 | result from a 4th operand and puts the result in an accumulator. */ | |
886 | #define ISA_HAS_MSAC (TARGET_MIPS5400 \ | |
887 | || TARGET_MIPS5500 \ | |
888 | || TARGET_SR71K \ | |
889 | ) | |
890 | /* ISA has three operand multiply instructions that the result | |
891 | from a 4th operand and puts the result in an accumulator. */ | |
cafe096b EC |
892 | #define ISA_HAS_MACC ((TARGET_MIPS4120 && !TARGET_MIPS16) \ |
893 | || TARGET_MIPS5400 \ | |
5ce6f47b EC |
894 | || TARGET_MIPS5500 \ |
895 | || TARGET_SR71K \ | |
896 | ) | |
897 | ||
898 | /* ISA has 32-bit rotate right instruction. */ | |
2d2a50c3 CD |
899 | #define ISA_HAS_ROTR_SI (!TARGET_MIPS16 \ |
900 | && (ISA_MIPS32R2 \ | |
901 | || TARGET_MIPS5400 \ | |
902 | || TARGET_MIPS5500 \ | |
903 | || TARGET_SR71K \ | |
904 | )) | |
5ce6f47b | 905 | |
2d2a50c3 | 906 | /* ISA has 64-bit rotate right instruction. */ |
5ce6f47b | 907 | #define ISA_HAS_ROTR_DI (TARGET_64BIT \ |
2d2a50c3 | 908 | && !TARGET_MIPS16 \ |
5ce6f47b EC |
909 | && (TARGET_MIPS5400 \ |
910 | || TARGET_MIPS5500 \ | |
911 | || TARGET_SR71K \ | |
912 | )) | |
913 | ||
8f2e3902 EC |
914 | /* ISA has data prefetch instruction. */ |
915 | #define ISA_HAS_PREFETCH ((ISA_MIPS4 \ | |
916 | || ISA_MIPS32 \ | |
2d2a50c3 | 917 | || ISA_MIPS32R2 \ |
8f2e3902 EC |
918 | || ISA_MIPS64) \ |
919 | && !TARGET_MIPS16) | |
920 | ||
8214bf98 RS |
921 | /* True if trunc.w.s and trunc.w.d are real (not synthetic) |
922 | instructions. Both require TARGET_HARD_FLOAT, and trunc.w.d | |
923 | also requires TARGET_DOUBLE_FLOAT. */ | |
924 | #define ISA_HAS_TRUNC_W (!ISA_MIPS1) | |
925 | ||
2d2a50c3 CD |
926 | /* ISA includes the MIPS32r2 seb and seh instructions. */ |
927 | #define ISA_HAS_SEB_SEH (!TARGET_MIPS16 \ | |
928 | && (ISA_MIPS32R2 \ | |
929 | )) | |
930 | ||
21c9500d RS |
931 | /* True if the result of a load is not available to the next instruction. |
932 | A nop will then be needed between instructions like "lw $4,..." | |
933 | and "addiu $4,$4,1". */ | |
934 | #define ISA_HAS_LOAD_DELAY (mips_isa == 1 \ | |
935 | && !TARGET_MIPS3900 \ | |
936 | && !TARGET_MIPS16) | |
937 | ||
938 | /* Likewise mtc1 and mfc1. */ | |
939 | #define ISA_HAS_XFER_DELAY (mips_isa <= 3) | |
940 | ||
941 | /* Likewise floating-point comparisons. */ | |
942 | #define ISA_HAS_FCMP_DELAY (mips_isa <= 3) | |
943 | ||
944 | /* True if mflo and mfhi can be immediately followed by instructions | |
945 | which write to the HI and LO registers. Most targets require a | |
946 | two-instruction gap. */ | |
947 | #define ISA_HAS_HILO_INTERLOCKS (TARGET_MIPS5500 || TARGET_SB1) | |
948 | ||
516a2dfd JW |
949 | /* CC1_SPEC causes -mips3 and -mips4 to set -mfp64 and -mgp64; -mips1 or |
950 | -mips2 sets -mfp32 and -mgp32. This can be overridden by an explicit | |
2370b831 JW |
951 | -mfp32, -mfp64, -mgp32 or -mgp64. -mfp64 sets MASK_FLOAT64 in |
952 | target_flags, and -mgp64 sets MASK_64BIT. | |
876c09d3 | 953 | |
2370b831 JW |
954 | Setting MASK_64BIT in target_flags will cause gcc to assume that |
955 | registers are 64 bits wide. int, long and void * will be 32 bit; | |
956 | this may be changed with -mint64 or -mlong64. | |
876c09d3 | 957 | |
2370b831 JW |
958 | The gen* programs link code that refers to MASK_64BIT. They don't |
959 | actually use the information in target_flags; they just refer to | |
960 | it. */ | |
e75b25e7 MM |
961 | \f |
962 | /* Switch Recognition by gcc.c. Add -G xx support */ | |
963 | ||
0e5a4ad8 | 964 | #undef SWITCH_TAKES_ARG |
e75b25e7 | 965 | #define SWITCH_TAKES_ARG(CHAR) \ |
7d4ea832 | 966 | (DEFAULT_SWITCH_TAKES_ARG (CHAR) || (CHAR) == 'G') |
e75b25e7 MM |
967 | |
968 | /* Sometimes certain combinations of command options do not make sense | |
969 | on a particular target machine. You can define a macro | |
970 | `OVERRIDE_OPTIONS' to take account of this. This macro, if | |
971 | defined, is executed once just after all the command options have | |
972 | been parsed. | |
973 | ||
974 | On the MIPS, it is used to handle -G. We also use it to set up all | |
975 | of the tables referenced in the other macros. */ | |
976 | ||
977 | #define OVERRIDE_OPTIONS override_options () | |
978 | ||
ac8ab9fe | 979 | #define CONDITIONAL_REGISTER_USAGE mips_conditional_register_usage () |
516a2dfd | 980 | |
7be1e523 RK |
981 | /* Show we can debug even without a frame pointer. */ |
982 | #define CAN_DEBUG_WITHOUT_FP | |
983 | \f | |
59c94430 MM |
984 | /* Tell collect what flags to pass to nm. */ |
985 | #ifndef NM_FLAGS | |
2ce3c6c6 | 986 | #define NM_FLAGS "-Bn" |
59c94430 MM |
987 | #endif |
988 | ||
e75b25e7 | 989 | \f |
4e88bbcd ILT |
990 | /* Assembler specs. */ |
991 | ||
992 | /* MIPS_AS_ASM_SPEC is passed when using the MIPS assembler rather | |
993 | than gas. */ | |
994 | ||
995 | #define MIPS_AS_ASM_SPEC "\ | |
996 | %{!.s:-nocpp} %{.s: %{cpp} %{nocpp}} \ | |
c725bd79 | 997 | %{pipe: %e-pipe is not supported} \ |
4e88bbcd ILT |
998 | %{K} %(subtarget_mips_as_asm_spec)" |
999 | ||
1000 | /* SUBTARGET_MIPS_AS_ASM_SPEC is passed when using the MIPS assembler | |
1001 | rather than gas. It may be overridden by subtargets. */ | |
1002 | ||
1003 | #ifndef SUBTARGET_MIPS_AS_ASM_SPEC | |
1004 | #define SUBTARGET_MIPS_AS_ASM_SPEC "%{v}" | |
1005 | #endif | |
1006 | ||
1007 | /* GAS_ASM_SPEC is passed when using gas, rather than the MIPS | |
1008 | assembler. */ | |
1009 | ||
a27fb29b | 1010 | #define GAS_ASM_SPEC "%{mtune=*} %{v}" |
009da785 | 1011 | |
3bd6d4c4 | 1012 | #define SUBTARGET_TARGET_SWITCHES |
009da785 | 1013 | |
009da785 | 1014 | extern int mips_abi; |
0e5a4ad8 EC |
1015 | |
1016 | #ifndef MIPS_ABI_DEFAULT | |
009da785 EC |
1017 | #define MIPS_ABI_DEFAULT ABI_32 |
1018 | #endif | |
0e5a4ad8 | 1019 | |
a27fb29b RS |
1020 | /* Use the most portable ABI flag for the ASM specs. */ |
1021 | ||
1022 | #if MIPS_ABI_DEFAULT == ABI_32 | |
1023 | #define MULTILIB_ABI_DEFAULT "mabi=32" | |
1024 | #define ASM_ABI_DEFAULT_SPEC "-32" | |
1025 | #endif | |
1026 | ||
1027 | #if MIPS_ABI_DEFAULT == ABI_O64 | |
1028 | #define MULTILIB_ABI_DEFAULT "mabi=o64" | |
1029 | #define ASM_ABI_DEFAULT_SPEC "-mabi=o64" | |
1030 | #endif | |
1031 | ||
1032 | #if MIPS_ABI_DEFAULT == ABI_N32 | |
1033 | #define MULTILIB_ABI_DEFAULT "mabi=n32" | |
1034 | #define ASM_ABI_DEFAULT_SPEC "-n32" | |
1035 | #endif | |
1036 | ||
1037 | #if MIPS_ABI_DEFAULT == ABI_64 | |
1038 | #define MULTILIB_ABI_DEFAULT "mabi=64" | |
1039 | #define ASM_ABI_DEFAULT_SPEC "-64" | |
1040 | #endif | |
1041 | ||
1042 | #if MIPS_ABI_DEFAULT == ABI_EABI | |
1043 | #define MULTILIB_ABI_DEFAULT "mabi=eabi" | |
1044 | #define ASM_ABI_DEFAULT_SPEC "-mabi=eabi" | |
1045 | #endif | |
1046 | ||
a27fb29b RS |
1047 | /* Only ELF targets can switch the ABI. */ |
1048 | #ifndef OBJECT_FORMAT_ELF | |
1049 | #undef ASM_ABI_DEFAULT_SPEC | |
1050 | #define ASM_ABI_DEFAULT_SPEC "" | |
0e5a4ad8 | 1051 | #endif |
4e88bbcd ILT |
1052 | |
1053 | /* TARGET_ASM_SPEC is used to select either MIPS_AS_ASM_SPEC or | |
1054 | GAS_ASM_SPEC as the default, depending upon the value of | |
1055 | TARGET_DEFAULT. */ | |
e75b25e7 | 1056 | |
bb98bc58 JW |
1057 | #if ((TARGET_CPU_DEFAULT | TARGET_DEFAULT) & MASK_GAS) != 0 |
1058 | /* GAS */ | |
bb98bc58 | 1059 | |
4e88bbcd ILT |
1060 | #define TARGET_ASM_SPEC "\ |
1061 | %{mmips-as: %(mips_as_asm_spec)} \ | |
1062 | %{!mmips-as: %(gas_asm_spec)}" | |
1063 | ||
1064 | #else /* not GAS */ | |
1065 | ||
1066 | #define TARGET_ASM_SPEC "\ | |
1067 | %{!mgas: %(mips_as_asm_spec)} \ | |
1068 | %{mgas: %(gas_asm_spec)}" | |
1069 | ||
1070 | #endif /* not GAS */ | |
1071 | ||
1072 | /* SUBTARGET_ASM_OPTIMIZING_SPEC handles passing optimization options | |
1073 | to the assembler. It may be overridden by subtargets. */ | |
1074 | #ifndef SUBTARGET_ASM_OPTIMIZING_SPEC | |
1075 | #define SUBTARGET_ASM_OPTIMIZING_SPEC "\ | |
bb98bc58 | 1076 | %{noasmopt:-O0} \ |
4e88bbcd ILT |
1077 | %{!noasmopt:%{O:-O2} %{O1:-O2} %{O2:-O2} %{O3:-O3}}" |
1078 | #endif | |
1079 | ||
1080 | /* SUBTARGET_ASM_DEBUGGING_SPEC handles passing debugging options to | |
1081 | the assembler. It may be overridden by subtargets. */ | |
1082 | #ifndef SUBTARGET_ASM_DEBUGGING_SPEC | |
1083 | #define SUBTARGET_ASM_DEBUGGING_SPEC "\ | |
bb98bc58 JW |
1084 | %{g} %{g0} %{g1} %{g2} %{g3} \ |
1085 | %{ggdb:-g} %{ggdb0:-g0} %{ggdb1:-g1} %{ggdb2:-g2} %{ggdb3:-g3} \ | |
1086 | %{gstabs:-g} %{gstabs0:-g0} %{gstabs1:-g1} %{gstabs2:-g2} %{gstabs3:-g3} \ | |
1087 | %{gstabs+:-g} %{gstabs+0:-g0} %{gstabs+1:-g1} %{gstabs+2:-g2} %{gstabs+3:-g3} \ | |
6d439235 | 1088 | %{gcoff:-g} %{gcoff0:-g0} %{gcoff1:-g1} %{gcoff2:-g2} %{gcoff3:-g3} \ |
3bd4f460 | 1089 | %(mdebug_asm_spec)" |
4e88bbcd | 1090 | #endif |
bb98bc58 | 1091 | |
3bd4f460 RO |
1092 | /* Beginning with gas 2.13, -mdebug must be passed to correctly handle COFF |
1093 | and stabs debugging info. */ | |
1094 | #if ((TARGET_CPU_DEFAULT | TARGET_DEFAULT) & MASK_GAS) != 0 | |
1095 | /* GAS */ | |
1096 | #define MDEBUG_ASM_SPEC "%{!gdwarf*:-mdebug} %{gdwarf*:-no-mdebug}" | |
1097 | #else /* not GAS */ | |
1098 | #define MDEBUG_ASM_SPEC "" | |
1099 | #endif /* not GAS */ | |
1100 | ||
4e88bbcd ILT |
1101 | /* SUBTARGET_ASM_SPEC is always passed to the assembler. It may be |
1102 | overridden by subtargets. */ | |
1103 | ||
1104 | #ifndef SUBTARGET_ASM_SPEC | |
1105 | #define SUBTARGET_ASM_SPEC "" | |
bb98bc58 | 1106 | #endif |
4e88bbcd | 1107 | |
a27fb29b RS |
1108 | /* ASM_SPEC is the set of arguments to pass to the assembler. Note: we |
1109 | pass -mgp32, -mgp64, -march, -mabi=eabi and -meabi=o64 regardless of | |
1110 | whether we're using GAS. These options can only be used properly | |
1111 | with GAS, and it is better to get an error from a non-GAS assembler | |
1112 | than to silently generate bad code. */ | |
4e88bbcd | 1113 | |
b2bcb32d | 1114 | #undef ASM_SPEC |
4e88bbcd | 1115 | #define ASM_SPEC "\ |
2d2a50c3 CD |
1116 | %{G*} %(endian_spec) %{mips1} %{mips2} %{mips3} %{mips4} \ |
1117 | %{mips32} %{mips32r2} %{mips64} \ | |
2bcb2ab3 | 1118 | %{mips16:%{!mno-mips16:-mips16}} %{mno-mips16:-no-mips16} \ |
4e88bbcd ILT |
1119 | %(subtarget_asm_optimizing_spec) \ |
1120 | %(subtarget_asm_debugging_spec) \ | |
1121 | %{membedded-pic} \ | |
a27fb29b RS |
1122 | %{mabi=32:-32}%{mabi=n32:-n32}%{mabi=64:-64}%{mabi=n64:-64} \ |
1123 | %{mabi=eabi} %{mabi=o64} %{!mabi*: %(asm_abi_default_spec)} \ | |
1124 | %{mgp32} %{mgp64} %{march=*} \ | |
4e88bbcd ILT |
1125 | %(target_asm_spec) \ |
1126 | %(subtarget_asm_spec)" | |
e75b25e7 MM |
1127 | |
1128 | /* Specify to run a post-processor, mips-tfile after the assembler | |
1129 | has run to stuff the mips debug information into the object file. | |
1130 | This is needed because the $#!%^ MIPS assembler provides no way | |
a813fadf MM |
1131 | of specifying such information in the assembly file. If we are |
1132 | cross compiling, disable mips-tfile unless the user specifies | |
1133 | -mmips-tfile. */ | |
e75b25e7 MM |
1134 | |
1135 | #ifndef ASM_FINAL_SPEC | |
bb98bc58 JW |
1136 | #if ((TARGET_CPU_DEFAULT | TARGET_DEFAULT) & MASK_GAS) != 0 |
1137 | /* GAS */ | |
31c714e3 | 1138 | #define ASM_FINAL_SPEC "\ |
149e4e00 | 1139 | %{mmips-as: %{!mno-mips-tfile: \ |
31c714e3 MM |
1140 | \n mips-tfile %{v*: -v} \ |
1141 | %{K: -I %b.o~} \ | |
1142 | %{!K: %{save-temps: -I %b.o~}} \ | |
ab78d4a8 | 1143 | %{c:%W{o*}%{!o*:-o %b.o}}%{!c:-o %U.o} \ |
31c714e3 | 1144 | %{.s:%i} %{!.s:%g.s}}}" |
a813fadf | 1145 | |
bb98bc58 JW |
1146 | #else |
1147 | /* not GAS */ | |
a813fadf | 1148 | #define ASM_FINAL_SPEC "\ |
149e4e00 | 1149 | %{!mgas: %{!mno-mips-tfile: \ |
a813fadf MM |
1150 | \n mips-tfile %{v*: -v} \ |
1151 | %{K: -I %b.o~} \ | |
1152 | %{!K: %{save-temps: -I %b.o~}} \ | |
1153 | %{c:%W{o*}%{!o*:-o %b.o}}%{!c:-o %U.o} \ | |
1154 | %{.s:%i} %{!.s:%g.s}}}" | |
1155 | ||
bb98bc58 | 1156 | #endif |
a813fadf | 1157 | #endif /* ASM_FINAL_SPEC */ |
e75b25e7 MM |
1158 | |
1159 | /* Redefinition of libraries used. Mips doesn't support normal | |
1160 | UNIX style profiling via calling _mcount. It does offer | |
987ba558 | 1161 | profiling that samples the PC, so do what we can... */ |
e75b25e7 MM |
1162 | |
1163 | #ifndef LIB_SPEC | |
1164 | #define LIB_SPEC "%{pg:-lprof1} %{p:-lprof1} -lc" | |
1165 | #endif | |
1166 | ||
31c714e3 | 1167 | /* Extra switches sometimes passed to the linker. */ |
bb98bc58 JW |
1168 | /* ??? The bestGnum will never be passed to the linker, because the gcc driver |
1169 | will interpret it as a -b option. */ | |
e75b25e7 MM |
1170 | |
1171 | #ifndef LINK_SPEC | |
31c714e3 | 1172 | #define LINK_SPEC "\ |
120dc6cd | 1173 | %(endian_spec) \ |
2d2a50c3 | 1174 | %{G*} %{mips1} %{mips2} %{mips3} %{mips4} %{mips32} %{mips32r2} %{mips64} \ |
120dc6cd | 1175 | %{bestGnum} %{shared} %{non_shared}" |
0e5a4ad8 EC |
1176 | #endif /* LINK_SPEC defined */ |
1177 | ||
e75b25e7 MM |
1178 | |
1179 | /* Specs for the compiler proper */ | |
1180 | ||
c9db96ce JR |
1181 | /* SUBTARGET_CC1_SPEC is passed to the compiler proper. It may be |
1182 | overridden by subtargets. */ | |
1183 | #ifndef SUBTARGET_CC1_SPEC | |
1184 | #define SUBTARGET_CC1_SPEC "" | |
1185 | #endif | |
1186 | ||
1187 | /* CC1_SPEC is the set of arguments to pass to the compiler proper. */ | |
75dcd8fe MM |
1188 | /* Note, we will need to adjust the following if we ever find a MIPS variant |
1189 | that has 32-bit GPRs and 64-bit FPRs as well as fix all of the reload bugs | |
1190 | that show up in this case. */ | |
c9db96ce | 1191 | |
e75b25e7 | 1192 | #ifndef CC1_SPEC |
31c714e3 | 1193 | #define CC1_SPEC "\ |
31c714e3 | 1194 | %{gline:%{!g:%{!g0:%{!g1:%{!g2: -g1}}}}} \ |
96abdcb1 | 1195 | %{G*} %{EB:-meb} %{EL:-mel} %{EB:%{EL:%emay not use both -EB and -EL}} \ |
c9db96ce | 1196 | %{save-temps: } \ |
4e314d1f | 1197 | %(subtarget_cc1_spec)" |
e75b25e7 MM |
1198 | #endif |
1199 | ||
4e88bbcd ILT |
1200 | /* Preprocessor specs. */ |
1201 | ||
4e88bbcd ILT |
1202 | /* SUBTARGET_CPP_SPEC is passed to the preprocessor. It may be |
1203 | overridden by subtargets. */ | |
1204 | #ifndef SUBTARGET_CPP_SPEC | |
1205 | #define SUBTARGET_CPP_SPEC "" | |
1206 | #endif | |
1207 | ||
ce3649d2 | 1208 | #define CPP_SPEC "%(subtarget_cpp_spec)" |
4e88bbcd ILT |
1209 | |
1210 | /* This macro defines names of additional specifications to put in the specs | |
1211 | that can be used in various specifications like CC1_SPEC. Its definition | |
1212 | is an initializer with a subgrouping for each command option. | |
1213 | ||
1214 | Each subgrouping contains a string constant, that defines the | |
1215 | specification name, and a string constant that used by the GNU CC driver | |
1216 | program. | |
1217 | ||
1218 | Do not define this macro if it does not need to do anything. */ | |
1219 | ||
1220 | #define EXTRA_SPECS \ | |
829245be KG |
1221 | { "subtarget_cc1_spec", SUBTARGET_CC1_SPEC }, \ |
1222 | { "subtarget_cpp_spec", SUBTARGET_CPP_SPEC }, \ | |
829245be KG |
1223 | { "mips_as_asm_spec", MIPS_AS_ASM_SPEC }, \ |
1224 | { "gas_asm_spec", GAS_ASM_SPEC }, \ | |
1225 | { "target_asm_spec", TARGET_ASM_SPEC }, \ | |
1226 | { "subtarget_mips_as_asm_spec", SUBTARGET_MIPS_AS_ASM_SPEC }, \ | |
1227 | { "subtarget_asm_optimizing_spec", SUBTARGET_ASM_OPTIMIZING_SPEC }, \ | |
1228 | { "subtarget_asm_debugging_spec", SUBTARGET_ASM_DEBUGGING_SPEC }, \ | |
3bd4f460 | 1229 | { "mdebug_asm_spec", MDEBUG_ASM_SPEC }, \ |
829245be | 1230 | { "subtarget_asm_spec", SUBTARGET_ASM_SPEC }, \ |
a27fb29b | 1231 | { "asm_abi_default_spec", ASM_ABI_DEFAULT_SPEC }, \ |
120dc6cd | 1232 | { "endian_spec", ENDIAN_SPEC }, \ |
4e88bbcd ILT |
1233 | SUBTARGET_EXTRA_SPECS |
1234 | ||
1235 | #ifndef SUBTARGET_EXTRA_SPECS | |
1236 | #define SUBTARGET_EXTRA_SPECS | |
e75b25e7 MM |
1237 | #endif |
1238 | ||
1239 | /* If defined, this macro is an additional prefix to try after | |
1240 | `STANDARD_EXEC_PREFIX'. */ | |
1241 | ||
1242 | #ifndef MD_EXEC_PREFIX | |
31c714e3 | 1243 | #define MD_EXEC_PREFIX "/usr/lib/cmplrs/cc/" |
e75b25e7 MM |
1244 | #endif |
1245 | ||
59c94430 MM |
1246 | #ifndef MD_STARTFILE_PREFIX |
1247 | #define MD_STARTFILE_PREFIX "/usr/lib/cmplrs/cc/" | |
1248 | #endif | |
1249 | ||
e75b25e7 MM |
1250 | \f |
1251 | /* Print subsidiary information on the compiler version in use. */ | |
1252 | ||
42dee4c7 | 1253 | #define MIPS_VERSION "[AL 1.1, MM 40]" |
e75b25e7 MM |
1254 | |
1255 | #ifndef MACHINE_TYPE | |
1256 | #define MACHINE_TYPE "BSD Mips" | |
1257 | #endif | |
1258 | ||
1259 | #ifndef TARGET_VERSION_INTERNAL | |
1260 | #define TARGET_VERSION_INTERNAL(STREAM) \ | |
1261 | fprintf (STREAM, " %s %s", MIPS_VERSION, MACHINE_TYPE) | |
1262 | #endif | |
1263 | ||
1264 | #ifndef TARGET_VERSION | |
1265 | #define TARGET_VERSION TARGET_VERSION_INTERNAL (stderr) | |
1266 | #endif | |
1267 | ||
1268 | \f | |
23532de9 JT |
1269 | #define SDB_DEBUGGING_INFO 1 /* generate info for mips-tfile */ |
1270 | #define DBX_DEBUGGING_INFO 1 /* generate stabs (OSF/rose) */ | |
1271 | #define MIPS_DEBUGGING_INFO 1 /* MIPS specific debugging info */ | |
e75b25e7 MM |
1272 | |
1273 | #ifndef PREFERRED_DEBUGGING_TYPE /* assume SDB_DEBUGGING_INFO */ | |
fe0986b4 | 1274 | #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG |
e75b25e7 MM |
1275 | #endif |
1276 | ||
59c94430 MM |
1277 | /* By default, turn on GDB extensions. */ |
1278 | #define DEFAULT_GDB_EXTENSIONS 1 | |
1279 | ||
e75b25e7 MM |
1280 | /* If we are passing smuggling stabs through the MIPS ECOFF object |
1281 | format, put a comment in front of the .stab<x> operation so | |
1282 | that the MIPS assembler does not choke. The mips-tfile program | |
1283 | will correctly put the stab into the object file. */ | |
1284 | ||
78d057d8 HPN |
1285 | #define ASM_STABS_OP ((TARGET_GAS) ? "\t.stabs\t" : " #.stabs\t") |
1286 | #define ASM_STABN_OP ((TARGET_GAS) ? "\t.stabn\t" : " #.stabn\t") | |
1287 | #define ASM_STABD_OP ((TARGET_GAS) ? "\t.stabd\t" : " #.stabd\t") | |
e75b25e7 | 1288 | |
6ae1498b JW |
1289 | /* Local compiler-generated symbols must have a prefix that the assembler |
1290 | understands. By default, this is $, although some targets (e.g., | |
987ba558 | 1291 | NetBSD-ELF) need to override this. */ |
6ae1498b JW |
1292 | |
1293 | #ifndef LOCAL_LABEL_PREFIX | |
1294 | #define LOCAL_LABEL_PREFIX "$" | |
1295 | #endif | |
1296 | ||
1297 | /* By default on the mips, external symbols do not have an underscore | |
987ba558 | 1298 | prepended, but some targets (e.g., NetBSD) require this. */ |
6ae1498b JW |
1299 | |
1300 | #ifndef USER_LABEL_PREFIX | |
1301 | #define USER_LABEL_PREFIX "" | |
1302 | #endif | |
1303 | ||
e75b25e7 MM |
1304 | /* Forward references to tags are allowed. */ |
1305 | #define SDB_ALLOW_FORWARD_REFERENCES | |
1306 | ||
1307 | /* Unknown tags are also allowed. */ | |
1308 | #define SDB_ALLOW_UNKNOWN_REFERENCES | |
1309 | ||
1310 | /* On Sun 4, this limit is 2048. We use 1500 to be safe, | |
1311 | since the length can run past this up to a continuation point. */ | |
44404b8b | 1312 | #undef DBX_CONTIN_LENGTH |
e75b25e7 MM |
1313 | #define DBX_CONTIN_LENGTH 1500 |
1314 | ||
987ba558 | 1315 | /* How to renumber registers for dbx and gdb. */ |
e75b25e7 MM |
1316 | #define DBX_REGISTER_NUMBER(REGNO) mips_dbx_regno[ (REGNO) ] |
1317 | ||
c8cc5c4a | 1318 | /* The mapping from gcc register number to DWARF 2 CFA column number. |
0021b564 JM |
1319 | This mapping does not allow for tracking register 0, since SGI's broken |
1320 | dwarf reader thinks column 0 is used for the frame address, but since | |
1321 | register 0 is fixed this is not a problem. */ | |
469ac993 | 1322 | #define DWARF_FRAME_REGNUM(REG) \ |
0021b564 | 1323 | (REG == GP_REG_FIRST + 31 ? DWARF_FRAME_RETURN_COLUMN : REG) |
c8cc5c4a JM |
1324 | |
1325 | /* The DWARF 2 CFA column which tracks the return address. */ | |
1326 | #define DWARF_FRAME_RETURN_COLUMN (FP_REG_LAST + 1) | |
e75b25e7 | 1327 | |
469ac993 | 1328 | /* Before the prologue, RA lives in r31. */ |
c5c76735 | 1329 | #define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (VOIDmode, GP_REG_FIRST + 31) |
469ac993 | 1330 | |
9e800206 | 1331 | /* Describe how we implement __builtin_eh_return. */ |
282cb01b | 1332 | #define EH_RETURN_DATA_REGNO(N) ((N) < (TARGET_MIPS16 ? 2 : 4) ? (N) + GP_ARG_FIRST : INVALID_REGNUM) |
9e800206 RH |
1333 | #define EH_RETURN_STACKADJ_RTX gen_rtx_REG (Pmode, GP_REG_FIRST + 3) |
1334 | ||
7dac2f89 | 1335 | /* Offsets recorded in opcodes are a multiple of this alignment factor. |
b3276c7a GK |
1336 | The default for this in 64-bit mode is 8, which causes problems with |
1337 | SFmode register saves. */ | |
1338 | #define DWARF_CIE_DATA_ALIGNMENT 4 | |
1339 | ||
e8b84d3d | 1340 | #define FIND_BASE_TERM(X) mips_delegitimize_address (X) |
cafe096b | 1341 | |
e75b25e7 MM |
1342 | #define PUT_SDB_DEF(a) \ |
1343 | do { \ | |
20db0e3c | 1344 | fprintf (asm_out_file, "\t%s.def\t", \ |
b82b0773 | 1345 | (TARGET_GAS) ? "" : "#"); \ |
20db0e3c RS |
1346 | ASM_OUTPUT_LABELREF (asm_out_file, a); \ |
1347 | fputc (';', asm_out_file); \ | |
e75b25e7 MM |
1348 | } while (0) |
1349 | ||
1350 | #define PUT_SDB_PLAIN_DEF(a) \ | |
1351 | do { \ | |
20db0e3c | 1352 | fprintf (asm_out_file, "\t%s.def\t.%s;", \ |
b82b0773 | 1353 | (TARGET_GAS) ? "" : "#", (a)); \ |
e75b25e7 MM |
1354 | } while (0) |
1355 | ||
e75b25e7 MM |
1356 | /* For block start and end, we create labels, so that |
1357 | later we can figure out where the correct offset is. | |
1358 | The normal .ent/.end serve well enough for functions, | |
1359 | so those are just commented out. */ | |
1360 | ||
1361 | #define PUT_SDB_BLOCK_START(LINE) \ | |
1362 | do { \ | |
20db0e3c | 1363 | fprintf (asm_out_file, \ |
6ae1498b JW |
1364 | "%sLb%d:\n\t%s.begin\t%sLb%d\t%d\n", \ |
1365 | LOCAL_LABEL_PREFIX, \ | |
e75b25e7 | 1366 | sdb_label_count, \ |
b82b0773 | 1367 | (TARGET_GAS) ? "" : "#", \ |
6ae1498b | 1368 | LOCAL_LABEL_PREFIX, \ |
e75b25e7 MM |
1369 | sdb_label_count, \ |
1370 | (LINE)); \ | |
1371 | sdb_label_count++; \ | |
1372 | } while (0) | |
1373 | ||
1374 | #define PUT_SDB_BLOCK_END(LINE) \ | |
1375 | do { \ | |
20db0e3c | 1376 | fprintf (asm_out_file, \ |
6ae1498b JW |
1377 | "%sLe%d:\n\t%s.bend\t%sLe%d\t%d\n", \ |
1378 | LOCAL_LABEL_PREFIX, \ | |
e75b25e7 | 1379 | sdb_label_count, \ |
b82b0773 | 1380 | (TARGET_GAS) ? "" : "#", \ |
6ae1498b | 1381 | LOCAL_LABEL_PREFIX, \ |
e75b25e7 MM |
1382 | sdb_label_count, \ |
1383 | (LINE)); \ | |
1384 | sdb_label_count++; \ | |
1385 | } while (0) | |
1386 | ||
1387 | #define PUT_SDB_FUNCTION_START(LINE) | |
1388 | ||
8f2e3902 EC |
1389 | #define PUT_SDB_FUNCTION_END(LINE) \ |
1390 | do { \ | |
9e21232c | 1391 | ASM_OUTPUT_SOURCE_LINE (asm_out_file, LINE + sdb_begin_function_line, 0); \ |
a642a781 | 1392 | } while (0) |
e75b25e7 MM |
1393 | |
1394 | #define PUT_SDB_EPILOGUE_END(NAME) | |
1395 | ||
ab78d4a8 MM |
1396 | /* Correct the offset of automatic variables and arguments. Note that |
1397 | the MIPS debug format wants all automatic variables and arguments | |
1398 | to be in terms of the virtual frame pointer (stack pointer before | |
1399 | any adjustment in the function), while the MIPS 3.0 linker wants | |
1400 | the frame pointer to be the stack pointer after the initial | |
1401 | adjustment. */ | |
e75b25e7 | 1402 | |
8f2e3902 | 1403 | #define DEBUGGER_AUTO_OFFSET(X) \ |
f5963e61 | 1404 | mips_debugger_offset (X, (HOST_WIDE_INT) 0) |
8f2e3902 | 1405 | #define DEBUGGER_ARG_OFFSET(OFFSET, X) \ |
f5963e61 | 1406 | mips_debugger_offset (X, (HOST_WIDE_INT) OFFSET) |
31c714e3 MM |
1407 | |
1408 | /* Tell collect that the object format is ECOFF */ | |
31c714e3 MM |
1409 | #define OBJECT_FORMAT_COFF /* Object file looks like COFF */ |
1410 | #define EXTENDED_COFF /* ECOFF, not normal coff */ | |
e75b25e7 MM |
1411 | \f |
1412 | /* Target machine storage layout */ | |
1413 | ||
1414 | /* Define this if most significant bit is lowest numbered | |
1415 | in instructions that operate on numbered bit-fields. | |
1416 | */ | |
4851a75c | 1417 | #define BITS_BIG_ENDIAN 0 |
e75b25e7 | 1418 | |
987ba558 | 1419 | /* Define this if most significant byte of a word is the lowest numbered. */ |
96abdcb1 | 1420 | #define BYTES_BIG_ENDIAN (TARGET_BIG_ENDIAN != 0) |
e75b25e7 | 1421 | |
987ba558 | 1422 | /* Define this if most significant word of a multiword number is the lowest. */ |
96abdcb1 | 1423 | #define WORDS_BIG_ENDIAN (TARGET_BIG_ENDIAN != 0) |
e75b25e7 | 1424 | |
96abdcb1 ILT |
1425 | /* Define this to set the endianness to use in libgcc2.c, which can |
1426 | not depend on target_flags. */ | |
1427 | #if !defined(MIPSEL) && !defined(__MIPSEL__) | |
1428 | #define LIBGCC2_WORDS_BIG_ENDIAN 1 | |
e75b25e7 | 1429 | #else |
96abdcb1 | 1430 | #define LIBGCC2_WORDS_BIG_ENDIAN 0 |
e75b25e7 MM |
1431 | #endif |
1432 | ||
876c09d3 | 1433 | #define MAX_BITS_PER_WORD 64 |
e75b25e7 MM |
1434 | |
1435 | /* Width of a word, in units (bytes). */ | |
456f6501 | 1436 | #define UNITS_PER_WORD (TARGET_64BIT ? 8 : 4) |
ef0e53ce | 1437 | #define MIN_UNITS_PER_WORD 4 |
876c09d3 JW |
1438 | |
1439 | /* For MIPS, width of a floating point register. */ | |
456f6501 | 1440 | #define UNITS_PER_FPREG (TARGET_FLOAT64 ? 8 : 4) |
e75b25e7 | 1441 | |
3f26edaa RS |
1442 | /* If register $f0 holds a floating-point value, $f(0 + FP_INC) is |
1443 | the next available register. */ | |
1444 | #define FP_INC (TARGET_FLOAT64 || TARGET_SINGLE_FLOAT ? 1 : 2) | |
1445 | ||
8a381273 AO |
1446 | /* The largest size of value that can be held in floating-point |
1447 | registers and moved with a single instruction. */ | |
1448 | #define UNITS_PER_HWFPVALUE (TARGET_SOFT_FLOAT ? 0 : FP_INC * UNITS_PER_FPREG) | |
1449 | ||
1450 | /* The largest size of value that can be held in floating-point | |
1451 | registers. */ | |
1452 | #define UNITS_PER_FPVALUE \ | |
1453 | (TARGET_SOFT_FLOAT ? 0 : (LONG_DOUBLE_TYPE_SIZE / BITS_PER_UNIT)) | |
4d72536e RS |
1454 | |
1455 | /* The number of bytes in a double. */ | |
1456 | #define UNITS_PER_DOUBLE (TYPE_PRECISION (double_type_node) / BITS_PER_UNIT) | |
3f26edaa | 1457 | |
e75b25e7 MM |
1458 | /* A C expression for the size in bits of the type `int' on the |
1459 | target machine. If you don't define this, the default is one | |
1460 | word. */ | |
456f6501 | 1461 | #define INT_TYPE_SIZE (TARGET_INT64 ? 64 : 32) |
876c09d3 JW |
1462 | |
1463 | /* Tell the preprocessor the maximum size of wchar_t. */ | |
1464 | #ifndef MAX_WCHAR_TYPE_SIZE | |
1465 | #ifndef WCHAR_TYPE_SIZE | |
16c484c7 | 1466 | #define MAX_WCHAR_TYPE_SIZE 64 |
876c09d3 JW |
1467 | #endif |
1468 | #endif | |
e75b25e7 MM |
1469 | |
1470 | /* A C expression for the size in bits of the type `short' on the | |
1471 | target machine. If you don't define this, the default is half a | |
1472 | word. (If this would be less than one storage unit, it is | |
1473 | rounded up to one unit.) */ | |
1474 | #define SHORT_TYPE_SIZE 16 | |
1475 | ||
1476 | /* A C expression for the size in bits of the type `long' on the | |
1477 | target machine. If you don't define this, the default is one | |
1478 | word. */ | |
456f6501 | 1479 | #define LONG_TYPE_SIZE (TARGET_LONG64 ? 64 : 32) |
876c09d3 | 1480 | #define MAX_LONG_TYPE_SIZE 64 |
e75b25e7 MM |
1481 | |
1482 | /* A C expression for the size in bits of the type `long long' on the | |
1483 | target machine. If you don't define this, the default is two | |
1484 | words. */ | |
923d630e | 1485 | #define LONG_LONG_TYPE_SIZE 64 |
e75b25e7 | 1486 | |
e75b25e7 MM |
1487 | /* A C expression for the size in bits of the type `float' on the |
1488 | target machine. If you don't define this, the default is one | |
1489 | word. */ | |
1490 | #define FLOAT_TYPE_SIZE 32 | |
1491 | ||
1492 | /* A C expression for the size in bits of the type `double' on the | |
1493 | target machine. If you don't define this, the default is two | |
1494 | words. */ | |
1495 | #define DOUBLE_TYPE_SIZE 64 | |
1496 | ||
1497 | /* A C expression for the size in bits of the type `long double' on | |
1498 | the target machine. If you don't define this, the default is two | |
1499 | words. */ | |
8a381273 AO |
1500 | #define LONG_DOUBLE_TYPE_SIZE \ |
1501 | (mips_abi == ABI_N32 || mips_abi == ABI_64 ? 128 : 64) | |
1502 | ||
1503 | /* long double is not a fixed mode, but the idea is that, if we | |
1504 | support long double, we also want a 128-bit integer type. */ | |
1505 | #define MAX_FIXED_MODE_SIZE LONG_DOUBLE_TYPE_SIZE | |
1506 | ||
1507 | #ifdef IN_LIBGCC2 | |
1508 | #if (defined _ABIN32 && _MIPS_SIM == _ABIN32) \ | |
1509 | || (defined _ABI64 && _MIPS_SIM == _ABI64) | |
1510 | # define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128 | |
1511 | # else | |
1512 | # define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64 | |
1513 | # endif | |
1514 | #endif | |
e75b25e7 | 1515 | |
cafe096b | 1516 | /* Width in bits of a pointer. */ |
1eeed24e | 1517 | #ifndef POINTER_SIZE |
cafe096b | 1518 | #define POINTER_SIZE ((TARGET_LONG64 && TARGET_64BIT) ? 64 : 32) |
1eeed24e | 1519 | #endif |
e75b25e7 | 1520 | |
cafe096b | 1521 | #define POINTERS_EXTEND_UNSIGNED 0 |
e75b25e7 MM |
1522 | |
1523 | /* Allocation boundary (in *bits*) for storing arguments in argument list. */ | |
0b51254d AO |
1524 | #define PARM_BOUNDARY ((mips_abi == ABI_O64 || mips_abi == ABI_N32 \ |
1525 | || mips_abi == ABI_64 \ | |
1526 | || (mips_abi == ABI_EABI && TARGET_64BIT)) ? 64 : 32) | |
e75b25e7 | 1527 | |
cafe096b | 1528 | |
e75b25e7 MM |
1529 | /* Allocation boundary (in *bits*) for the code of a function. */ |
1530 | #define FUNCTION_BOUNDARY 32 | |
1531 | ||
1532 | /* Alignment of field after `int : 0' in a structure. */ | |
9e95597a | 1533 | #define EMPTY_FIELD_BOUNDARY 32 |
e75b25e7 MM |
1534 | |
1535 | /* Every structure's size must be a multiple of this. */ | |
1536 | /* 8 is observed right on a DECstation and on riscos 4.02. */ | |
1537 | #define STRUCTURE_SIZE_BOUNDARY 8 | |
1538 | ||
1539 | /* There is no point aligning anything to a rounder boundary than this. */ | |
8a381273 | 1540 | #define BIGGEST_ALIGNMENT LONG_DOUBLE_TYPE_SIZE |
e75b25e7 | 1541 | |
31c714e3 | 1542 | /* Set this nonzero if move instructions will actually fail to work |
e75b25e7 | 1543 | when given unaligned data. */ |
31c714e3 | 1544 | #define STRICT_ALIGNMENT 1 |
e75b25e7 MM |
1545 | |
1546 | /* Define this if you wish to imitate the way many other C compilers | |
1547 | handle alignment of bitfields and the structures that contain | |
1548 | them. | |
1549 | ||
43a88a8c | 1550 | The behavior is that the type written for a bit-field (`int', |
e75b25e7 MM |
1551 | `short', or other integer type) imposes an alignment for the |
1552 | entire structure, as if the structure really did contain an | |
43a88a8c | 1553 | ordinary field of that type. In addition, the bit-field is placed |
e75b25e7 MM |
1554 | within the structure so that it would fit within such a field, |
1555 | not crossing a boundary for it. | |
1556 | ||
43a88a8c | 1557 | Thus, on most machines, a bit-field whose type is written as `int' |
e75b25e7 MM |
1558 | would not cross a four-byte boundary, and would force four-byte |
1559 | alignment for the whole structure. (The alignment used may not | |
1560 | be four bytes; it is controlled by the other alignment | |
1561 | parameters.) | |
1562 | ||
1563 | If the macro is defined, its definition should be a C expression; | |
1564 | a nonzero value for the expression enables this behavior. */ | |
1565 | ||
1566 | #define PCC_BITFIELD_TYPE_MATTERS 1 | |
1567 | ||
1568 | /* If defined, a C expression to compute the alignment given to a | |
1569 | constant that is being placed in memory. CONSTANT is the constant | |
1570 | and ALIGN is the alignment that the object would ordinarily have. | |
1571 | The value of this macro is used instead of that alignment to align | |
1572 | the object. | |
1573 | ||
1574 | If this macro is not defined, then ALIGN is used. | |
1575 | ||
1576 | The typical use of this macro is to increase alignment for string | |
1577 | constants to be word aligned so that `strcpy' calls that copy | |
1578 | constants can be done inline. */ | |
1579 | ||
1580 | #define CONSTANT_ALIGNMENT(EXP, ALIGN) \ | |
1581 | ((TREE_CODE (EXP) == STRING_CST || TREE_CODE (EXP) == CONSTRUCTOR) \ | |
75131237 | 1582 | && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN)) |
e75b25e7 MM |
1583 | |
1584 | /* If defined, a C expression to compute the alignment for a static | |
1585 | variable. TYPE is the data type, and ALIGN is the alignment that | |
1586 | the object would ordinarily have. The value of this macro is used | |
1587 | instead of that alignment to align the object. | |
1588 | ||
1589 | If this macro is not defined, then ALIGN is used. | |
1590 | ||
1591 | One use of this macro is to increase alignment of medium-size | |
1592 | data to make it all fit in fewer cache lines. Another is to | |
1593 | cause character arrays to be word-aligned so that `strcpy' calls | |
1594 | that copy constants to character arrays can be done inline. */ | |
1595 | ||
1596 | #undef DATA_ALIGNMENT | |
1597 | #define DATA_ALIGNMENT(TYPE, ALIGN) \ | |
1598 | ((((ALIGN) < BITS_PER_WORD) \ | |
1599 | && (TREE_CODE (TYPE) == ARRAY_TYPE \ | |
1600 | || TREE_CODE (TYPE) == UNION_TYPE \ | |
1601 | || TREE_CODE (TYPE) == RECORD_TYPE)) ? BITS_PER_WORD : (ALIGN)) | |
1602 | ||
f5c8ac96 CP |
1603 | |
1604 | /* Force right-alignment for small varargs in 32 bit little_endian mode */ | |
1605 | ||
cafe096b | 1606 | #define PAD_VARARGS_DOWN (TARGET_64BIT ? BYTES_BIG_ENDIAN : !BYTES_BIG_ENDIAN) |
f5c8ac96 | 1607 | |
e75b25e7 MM |
1608 | /* Define this macro if an argument declared as `char' or `short' in a |
1609 | prototype should actually be passed as an `int'. In addition to | |
1610 | avoiding errors in certain cases of mismatch, it also makes for | |
987ba558 | 1611 | better code on certain machines. */ |
e75b25e7 | 1612 | |
cb560352 | 1613 | #define PROMOTE_PROTOTYPES 1 |
e75b25e7 | 1614 | |
9a63901f RK |
1615 | /* Define if operations between registers always perform the operation |
1616 | on the full register even if a narrower mode is specified. */ | |
1617 | #define WORD_REGISTER_OPERATIONS | |
1618 | ||
1619 | /* Define if loading in MODE, an integral mode narrower than BITS_PER_WORD | |
1620 | will either zero-extend or sign-extend. The value of this macro should | |
1621 | be the code that says which one of the two operations is implicitly | |
7dac2f89 | 1622 | done, NIL if none. |
a872728c JL |
1623 | |
1624 | When in 64 bit mode, mips_move_1word will sign extend SImode and CCmode | |
1625 | moves. All other referces are zero extended. */ | |
1626 | #define LOAD_EXTEND_OP(MODE) \ | |
1627 | (TARGET_64BIT && ((MODE) == SImode || (MODE) == CCmode) \ | |
1628 | ? SIGN_EXTEND : ZERO_EXTEND) | |
2bcb2ab3 GK |
1629 | |
1630 | /* Define this macro if it is advisable to hold scalars in registers | |
7dac2f89 | 1631 | in a wider mode than that declared by the program. In such cases, |
2bcb2ab3 GK |
1632 | the value is constrained to be within the bounds of the declared |
1633 | type, but kept valid in the wider mode. The signedness of the | |
cafe096b | 1634 | extension may differ from that of the type. */ |
2bcb2ab3 GK |
1635 | |
1636 | #define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \ | |
1637 | if (GET_MODE_CLASS (MODE) == MODE_INT \ | |
cafe096b EC |
1638 | && GET_MODE_SIZE (MODE) < UNITS_PER_WORD) \ |
1639 | { \ | |
1640 | if ((MODE) == SImode) \ | |
1641 | (UNSIGNEDP) = 0; \ | |
1642 | (MODE) = Pmode; \ | |
1643 | } | |
1644 | ||
1645 | /* Define if loading short immediate values into registers sign extends. */ | |
1646 | #define SHORT_IMMEDIATES_SIGN_EXTEND | |
1647 | ||
2bcb2ab3 GK |
1648 | |
1649 | /* Define this if function arguments should also be promoted using the above | |
1650 | procedure. */ | |
2bcb2ab3 GK |
1651 | #define PROMOTE_FUNCTION_ARGS |
1652 | ||
1653 | /* Likewise, if the function return value is promoted. */ | |
2bcb2ab3 | 1654 | #define PROMOTE_FUNCTION_RETURN |
cafe096b | 1655 | |
e75b25e7 MM |
1656 | \f |
1657 | /* Standard register usage. */ | |
1658 | ||
1659 | /* Number of actual hardware registers. | |
1660 | The hardware registers are assigned numbers for the compiler | |
1661 | from 0 to just below FIRST_PSEUDO_REGISTER. | |
1662 | All registers that the compiler knows about must be given numbers, | |
1663 | even those that are not normally considered general registers. | |
1664 | ||
225b8835 | 1665 | On the Mips, we have 32 integer registers, 32 floating point |
b8eb88d0 | 1666 | registers, 8 condition code registers, and the special registers |
d334c3c1 RS |
1667 | hi and lo. After that we have 32 COP0 registers, 32 COP2 registers, |
1668 | and 32 COP3 registers. (COP1 is the floating-point processor.) | |
1669 | The 8 condition code registers are only used if mips_isa >= 4. */ | |
e75b25e7 | 1670 | |
d604bca3 | 1671 | #define FIRST_PSEUDO_REGISTER 176 |
e75b25e7 MM |
1672 | |
1673 | /* 1 for registers that have pervasive standard uses | |
1674 | and are not available for the register allocator. | |
1675 | ||
1676 | On the MIPS, see conventions, page D-2 */ | |
1677 | ||
d604bca3 MH |
1678 | /* Regarding coprocessor registers: without evidence to the contrary, |
1679 | it's best to assume that each coprocessor register has a unique | |
1680 | use. This can be overridden, in, e.g., override_options() or | |
1681 | CONDITIONAL_REGISTER_USAGE should the assumption be inappropriate | |
1682 | for a particular target. */ | |
1683 | ||
e75b25e7 MM |
1684 | #define FIXED_REGISTERS \ |
1685 | { \ | |
1686 | 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ | |
cafe096b | 1687 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, \ |
e75b25e7 MM |
1688 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ |
1689 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ | |
d334c3c1 | 1690 | 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, \ |
d604bca3 MH |
1691 | /* COP0 registers */ \ |
1692 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ | |
1693 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ | |
1694 | /* COP2 registers */ \ | |
1695 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ | |
1696 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ | |
1697 | /* COP3 registers */ \ | |
1698 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ | |
1699 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 \ | |
e75b25e7 MM |
1700 | } |
1701 | ||
1702 | ||
cafe096b EC |
1703 | /* Don't mark $31 as a call-clobbered register. The idea is that |
1704 | it's really the call instructions themselves which clobber $31. | |
1705 | We don't care what the called function does with it afterwards. | |
1706 | ||
1707 | This approach makes it easier to implement sibcalls. Unlike normal | |
1708 | calls, sibcalls don't clobber $31, so the register reaches the | |
1709 | called function in tact. EPILOGUE_USES says that $31 is useful | |
1710 | to the called function. */ | |
e75b25e7 MM |
1711 | |
1712 | #define CALL_USED_REGISTERS \ | |
1713 | { \ | |
1714 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ | |
cafe096b | 1715 | 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, \ |
e75b25e7 MM |
1716 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ |
1717 | 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ | |
cafe096b | 1718 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ |
d604bca3 MH |
1719 | /* COP0 registers */ \ |
1720 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ | |
1721 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ | |
1722 | /* COP2 registers */ \ | |
1723 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ | |
1724 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ | |
1725 | /* COP3 registers */ \ | |
1726 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ | |
1727 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 \ | |
e75b25e7 MM |
1728 | } |
1729 | ||
2ca2d9ee EC |
1730 | /* Like `CALL_USED_REGISTERS' but used to overcome a historical |
1731 | problem which makes CALL_USED_REGISTERS *always* include | |
1732 | all the FIXED_REGISTERS. Until this problem has been | |
1733 | resolved this macro can be used to overcome this situation. | |
1734 | In particular, block_propagate() requires this list | |
1735 | be acurate, or we can remove registers which should be live. | |
1736 | This macro is used in regs_invalidated_by_call. */ | |
1737 | ||
1738 | ||
1739 | #define CALL_REALLY_USED_REGISTERS \ | |
1740 | { /* General registers. */ \ | |
1741 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ | |
cafe096b | 1742 | 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 1, 0, 0, \ |
2ca2d9ee EC |
1743 | /* Floating-point registers. */ \ |
1744 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ | |
1745 | 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ | |
1746 | /* Others. */ \ | |
cafe096b | 1747 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ |
d604bca3 MH |
1748 | /* COP0 registers */ \ |
1749 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ | |
1750 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ | |
1751 | /* COP2 registers */ \ | |
1752 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ | |
1753 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ | |
1754 | /* COP3 registers */ \ | |
1755 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ | |
1756 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 \ | |
2ca2d9ee | 1757 | } |
e75b25e7 MM |
1758 | |
1759 | /* Internal macros to classify a register number as to whether it's a | |
1760 | general purpose register, a floating point register, a | |
516a2dfd | 1761 | multiply/divide register, or a status register. */ |
e75b25e7 MM |
1762 | |
1763 | #define GP_REG_FIRST 0 | |
1764 | #define GP_REG_LAST 31 | |
1765 | #define GP_REG_NUM (GP_REG_LAST - GP_REG_FIRST + 1) | |
1766 | #define GP_DBX_FIRST 0 | |
1767 | ||
1768 | #define FP_REG_FIRST 32 | |
1769 | #define FP_REG_LAST 63 | |
1770 | #define FP_REG_NUM (FP_REG_LAST - FP_REG_FIRST + 1) | |
1771 | #define FP_DBX_FIRST ((write_symbols == DBX_DEBUG) ? 38 : 32) | |
1772 | ||
1773 | #define MD_REG_FIRST 64 | |
d334c3c1 | 1774 | #define MD_REG_LAST 65 |
e75b25e7 | 1775 | #define MD_REG_NUM (MD_REG_LAST - MD_REG_FIRST + 1) |
77d4f3a4 | 1776 | #define MD_DBX_FIRST (FP_DBX_FIRST + FP_REG_NUM) |
e75b25e7 | 1777 | |
225b8835 | 1778 | #define ST_REG_FIRST 67 |
b8eb88d0 | 1779 | #define ST_REG_LAST 74 |
e75b25e7 MM |
1780 | #define ST_REG_NUM (ST_REG_LAST - ST_REG_FIRST + 1) |
1781 | ||
39dffea3 | 1782 | |
cafe096b | 1783 | /* FIXME: renumber. */ |
d604bca3 MH |
1784 | #define COP0_REG_FIRST 80 |
1785 | #define COP0_REG_LAST 111 | |
1786 | #define COP0_REG_NUM (COP0_REG_LAST - COP0_REG_FIRST + 1) | |
1787 | ||
1788 | #define COP2_REG_FIRST 112 | |
1789 | #define COP2_REG_LAST 143 | |
1790 | #define COP2_REG_NUM (COP2_REG_LAST - COP2_REG_FIRST + 1) | |
1791 | ||
1792 | #define COP3_REG_FIRST 144 | |
1793 | #define COP3_REG_LAST 175 | |
1794 | #define COP3_REG_NUM (COP3_REG_LAST - COP3_REG_FIRST + 1) | |
1795 | /* ALL_COP_REG_NUM assumes that COP0,2,and 3 are numbered consecutively. */ | |
1796 | #define ALL_COP_REG_NUM (COP3_REG_LAST - COP0_REG_FIRST + 1) | |
1797 | ||
e75b25e7 MM |
1798 | #define AT_REGNUM (GP_REG_FIRST + 1) |
1799 | #define HI_REGNUM (MD_REG_FIRST + 0) | |
1800 | #define LO_REGNUM (MD_REG_FIRST + 1) | |
b8eb88d0 ILT |
1801 | |
1802 | /* FPSW_REGNUM is the single condition code used if mips_isa < 4. If | |
1803 | mips_isa >= 4, it should not be used, and an arbitrary ST_REG | |
1804 | should be used instead. */ | |
e75b25e7 MM |
1805 | #define FPSW_REGNUM ST_REG_FIRST |
1806 | ||
75131237 RK |
1807 | #define GP_REG_P(REGNO) \ |
1808 | ((unsigned int) ((int) (REGNO) - GP_REG_FIRST) < GP_REG_NUM) | |
2bcb2ab3 GK |
1809 | #define M16_REG_P(REGNO) \ |
1810 | (((REGNO) >= 2 && (REGNO) <= 7) || (REGNO) == 16 || (REGNO) == 17) | |
75131237 RK |
1811 | #define FP_REG_P(REGNO) \ |
1812 | ((unsigned int) ((int) (REGNO) - FP_REG_FIRST) < FP_REG_NUM) | |
1813 | #define MD_REG_P(REGNO) \ | |
1814 | ((unsigned int) ((int) (REGNO) - MD_REG_FIRST) < MD_REG_NUM) | |
1815 | #define ST_REG_P(REGNO) \ | |
1816 | ((unsigned int) ((int) (REGNO) - ST_REG_FIRST) < ST_REG_NUM) | |
d604bca3 MH |
1817 | #define COP0_REG_P(REGNO) \ |
1818 | ((unsigned int) ((int) (REGNO) - COP0_REG_FIRST) < COP0_REG_NUM) | |
1819 | #define COP2_REG_P(REGNO) \ | |
1820 | ((unsigned int) ((int) (REGNO) - COP2_REG_FIRST) < COP2_REG_NUM) | |
1821 | #define COP3_REG_P(REGNO) \ | |
1822 | ((unsigned int) ((int) (REGNO) - COP3_REG_FIRST) < COP3_REG_NUM) | |
1823 | #define ALL_COP_REG_P(REGNO) \ | |
1824 | ((unsigned int) ((int) (REGNO) - COP0_REG_FIRST) < ALL_COP_REG_NUM) | |
1825 | ||
5b0f0db6 RS |
1826 | #define FP_REG_RTX_P(X) (GET_CODE (X) == REG && FP_REG_P (REGNO (X))) |
1827 | ||
d604bca3 MH |
1828 | /* Return coprocessor number from register number. */ |
1829 | ||
1830 | #define COPNUM_AS_CHAR_FROM_REGNUM(REGNO) \ | |
1831 | (COP0_REG_P (REGNO) ? '0' : COP2_REG_P (REGNO) ? '2' \ | |
1832 | : COP3_REG_P (REGNO) ? '3' : '?') | |
e75b25e7 | 1833 | |
e75b25e7 MM |
1834 | /* Return number of consecutive hard regs needed starting at reg REGNO |
1835 | to hold something of mode MODE. | |
1836 | This is ordinarily the length in words of a value of mode MODE | |
1837 | but can be less for certain modes in special long registers. | |
1838 | ||
1839 | On the MIPS, all general registers are one word long. Except on | |
1840 | the R4000 with the FR bit set, the floating point uses register | |
956d6950 | 1841 | pairs, with the second register not being allocable. */ |
e75b25e7 | 1842 | |
0e5a4ad8 | 1843 | #define HARD_REGNO_NREGS(REGNO, MODE) mips_hard_regno_nregs (REGNO, MODE) |
e75b25e7 MM |
1844 | |
1845 | /* Value is 1 if hard register REGNO can hold a value of machine-mode | |
876c09d3 JW |
1846 | MODE. In 32 bit mode, require that DImode and DFmode be in even |
1847 | registers. For DImode, this makes some of the insns easier to | |
1848 | write, since you don't have to worry about a DImode value in | |
1849 | registers 3 & 4, producing a result in 4 & 5. | |
e75b25e7 MM |
1850 | |
1851 | To make the code simpler HARD_REGNO_MODE_OK now just references an | |
1852 | array built in override_options. Because machmodes.h is not yet | |
1853 | included before this file is processed, the MODE bound can't be | |
1854 | expressed here. */ | |
1855 | ||
1856 | extern char mips_hard_regno_mode_ok[][FIRST_PSEUDO_REGISTER]; | |
1857 | ||
1858 | #define HARD_REGNO_MODE_OK(REGNO, MODE) \ | |
1859 | mips_hard_regno_mode_ok[ (int)(MODE) ][ (REGNO) ] | |
1860 | ||
1861 | /* Value is 1 if it is a good idea to tie two pseudo registers | |
1862 | when one has mode MODE1 and one has mode MODE2. | |
1863 | If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2, | |
1864 | for any hard reg, then this must be 0 for correct output. */ | |
1865 | #define MODES_TIEABLE_P(MODE1, MODE2) \ | |
1866 | ((GET_MODE_CLASS (MODE1) == MODE_FLOAT || \ | |
1867 | GET_MODE_CLASS (MODE1) == MODE_COMPLEX_FLOAT) \ | |
1868 | == (GET_MODE_CLASS (MODE2) == MODE_FLOAT || \ | |
1869 | GET_MODE_CLASS (MODE2) == MODE_COMPLEX_FLOAT)) | |
1870 | ||
1871 | /* MIPS pc is not overloaded on a register. */ | |
1872 | /* #define PC_REGNUM xx */ | |
1873 | ||
1874 | /* Register to use for pushing function arguments. */ | |
0fb5ac6f | 1875 | #define STACK_POINTER_REGNUM (GP_REG_FIRST + 29) |
e75b25e7 | 1876 | |
97116296 ILT |
1877 | /* Offset from the stack pointer to the first available location. Use |
1878 | the default value zero. */ | |
1879 | /* #define STACK_POINTER_OFFSET 0 */ | |
e75b25e7 | 1880 | |
2bcb2ab3 GK |
1881 | /* Base register for access to local variables of the function. We |
1882 | pretend that the frame pointer is $1, and then eliminate it to | |
1883 | HARD_FRAME_POINTER_REGNUM. We can get away with this because $1 is | |
1884 | a fixed register, and will not be used for anything else. */ | |
1885 | #define FRAME_POINTER_REGNUM (GP_REG_FIRST + 1) | |
1886 | ||
0ff83799 MM |
1887 | /* Temporary scratch register for use by the assembler. */ |
1888 | #define ASSEMBLER_SCRATCH_REGNUM (GP_REG_FIRST + 1) | |
1889 | ||
2bcb2ab3 GK |
1890 | /* $30 is not available on the mips16, so we use $17 as the frame |
1891 | pointer. */ | |
1892 | #define HARD_FRAME_POINTER_REGNUM \ | |
1893 | (TARGET_MIPS16 ? GP_REG_FIRST + 17 : GP_REG_FIRST + 30) | |
e75b25e7 MM |
1894 | |
1895 | /* Value should be nonzero if functions must have frame pointers. | |
1896 | Zero means the frame pointer need not be set up (and parms | |
1897 | may be accessed via the stack pointer) in functions that seem suitable. | |
1898 | This is computed in `reload', in reload1.c. */ | |
1899 | #define FRAME_POINTER_REQUIRED (current_function_calls_alloca) | |
1900 | ||
1901 | /* Base register for access to arguments of the function. */ | |
ab78d4a8 | 1902 | #define ARG_POINTER_REGNUM GP_REG_FIRST |
e75b25e7 MM |
1903 | |
1904 | /* Register in which static-chain is passed to a function. */ | |
0fb5ac6f | 1905 | #define STATIC_CHAIN_REGNUM (GP_REG_FIRST + 2) |
e75b25e7 | 1906 | |
1154b096 MM |
1907 | /* If the structure value address is passed in a register, then |
1908 | `STRUCT_VALUE_REGNUM' should be the number of that register. */ | |
1909 | /* #define STRUCT_VALUE_REGNUM (GP_REG_FIRST + 4) */ | |
1910 | ||
1911 | /* If the structure value address is not passed in a register, define | |
1912 | `STRUCT_VALUE' as an expression returning an RTX for the place | |
1913 | where the address is passed. If it returns 0, the address is | |
1914 | passed as an "invisible" first argument. */ | |
f58cfbfb | 1915 | #define STRUCT_VALUE 0 |
e75b25e7 MM |
1916 | |
1917 | /* Mips registers used in prologue/epilogue code when the stack frame | |
1918 | is larger than 32K bytes. These registers must come from the | |
1919 | scratch register set, and not used for passing and returning | |
1920 | arguments and any other information used in the calling sequence | |
516a2dfd JW |
1921 | (such as pic). Must start at 12, since t0/t3 are parameter passing |
1922 | registers in the 64 bit ABI. */ | |
7bea35e7 | 1923 | |
516a2dfd JW |
1924 | #define MIPS_TEMP1_REGNUM (GP_REG_FIRST + 12) |
1925 | #define MIPS_TEMP2_REGNUM (GP_REG_FIRST + 13) | |
e75b25e7 MM |
1926 | |
1927 | /* Define this macro if it is as good or better to call a constant | |
1928 | function address than to call an address kept in a register. */ | |
1929 | #define NO_FUNCTION_CSE 1 | |
1930 | ||
1931 | /* Define this macro if it is as good or better for a function to | |
1932 | call itself with an explicit address than to call an address | |
1933 | kept in a register. */ | |
1934 | #define NO_RECURSIVE_FUNCTION_CSE 1 | |
1935 | ||
f833ffd4 RS |
1936 | /* The ABI-defined global pointer. Sometimes we use a different |
1937 | register in leaf functions: see PIC_OFFSET_TABLE_REGNUM. */ | |
1938 | #define GLOBAL_POINTER_REGNUM (GP_REG_FIRST + 28) | |
1939 | ||
1940 | /* We normally use $28 as the global pointer. However, when generating | |
1941 | n32/64 PIC, it is better for leaf functions to use a call-clobbered | |
1942 | register instead. They can then avoid saving and restoring $28 | |
1943 | and perhaps avoid using a frame at all. | |
1944 | ||
1945 | When a leaf function uses something other than $28, mips_expand_prologue | |
1946 | will modify pic_offset_table_rtx in place. Take the register number | |
1947 | from there after reload. */ | |
1948 | #define PIC_OFFSET_TABLE_REGNUM \ | |
1949 | (reload_completed ? REGNO (pic_offset_table_rtx) : GLOBAL_POINTER_REGNUM) | |
e75b25e7 | 1950 | |
24e214e3 | 1951 | #define PIC_FUNCTION_ADDR_REGNUM (GP_REG_FIRST + 25) |
e75b25e7 MM |
1952 | \f |
1953 | /* Define the classes of registers for register constraints in the | |
1954 | machine description. Also define ranges of constants. | |
1955 | ||
1956 | One of the classes must always be named ALL_REGS and include all hard regs. | |
1957 | If there is more than one class, another class must be named NO_REGS | |
1958 | and contain no registers. | |
1959 | ||
1960 | The name GENERAL_REGS must be the name of a class (or an alias for | |
1961 | another name such as ALL_REGS). This is the class of registers | |
1962 | that is allowed by "g" or "r" in a register constraint. | |
1963 | Also, registers outside this class are allocated only when | |
1964 | instructions express preferences for them. | |
1965 | ||
1966 | The classes must be numbered in nondecreasing order; that is, | |
1967 | a larger-numbered class must never be contained completely | |
1968 | in a smaller-numbered class. | |
1969 | ||
1970 | For any two classes, it is very desirable that there be another | |
1971 | class that represents their union. */ | |
1972 | ||
1973 | enum reg_class | |
1974 | { | |
1975 | NO_REGS, /* no registers in set */ | |
2bcb2ab3 GK |
1976 | M16_NA_REGS, /* mips16 regs not used to pass args */ |
1977 | M16_REGS, /* mips16 directly accessible registers */ | |
1978 | T_REG, /* mips16 T register ($24) */ | |
1979 | M16_T_REGS, /* mips16 registers plus T register */ | |
cafe096b EC |
1980 | PIC_FN_ADDR_REG, /* SVR4 PIC function address register */ |
1981 | LEA_REGS, /* Every GPR except $25 */ | |
e75b25e7 MM |
1982 | GR_REGS, /* integer registers */ |
1983 | FP_REGS, /* floating point registers */ | |
1984 | HI_REG, /* hi register */ | |
1985 | LO_REG, /* lo register */ | |
1986 | MD_REGS, /* multiply/divide registers (hi/lo) */ | |
d604bca3 MH |
1987 | COP0_REGS, /* generic coprocessor classes */ |
1988 | COP2_REGS, | |
1989 | COP3_REGS, | |
e4f5c5d6 KR |
1990 | HI_AND_GR_REGS, /* union classes */ |
1991 | LO_AND_GR_REGS, | |
ab093b81 | 1992 | HI_AND_FP_REGS, |
d604bca3 MH |
1993 | COP0_AND_GR_REGS, |
1994 | COP2_AND_GR_REGS, | |
1995 | COP3_AND_GR_REGS, | |
1996 | ALL_COP_REGS, | |
1997 | ALL_COP_AND_GR_REGS, | |
e75b25e7 MM |
1998 | ST_REGS, /* status registers (fp status) */ |
1999 | ALL_REGS, /* all registers */ | |
2000 | LIM_REG_CLASSES /* max value + 1 */ | |
2001 | }; | |
2002 | ||
2003 | #define N_REG_CLASSES (int) LIM_REG_CLASSES | |
2004 | ||
2005 | #define GENERAL_REGS GR_REGS | |
2006 | ||
2007 | /* An initializer containing the names of the register classes as C | |
2008 | string constants. These names are used in writing some of the | |
2009 | debugging dumps. */ | |
2010 | ||
2011 | #define REG_CLASS_NAMES \ | |
2012 | { \ | |
2013 | "NO_REGS", \ | |
2bcb2ab3 GK |
2014 | "M16_NA_REGS", \ |
2015 | "M16_REGS", \ | |
2016 | "T_REG", \ | |
2017 | "M16_T_REGS", \ | |
cafe096b EC |
2018 | "PIC_FN_ADDR_REG", \ |
2019 | "LEA_REGS", \ | |
e75b25e7 MM |
2020 | "GR_REGS", \ |
2021 | "FP_REGS", \ | |
2022 | "HI_REG", \ | |
2023 | "LO_REG", \ | |
2024 | "MD_REGS", \ | |
d604bca3 MH |
2025 | /* coprocessor registers */ \ |
2026 | "COP0_REGS", \ | |
2027 | "COP2_REGS", \ | |
2028 | "COP3_REGS", \ | |
e4f5c5d6 KR |
2029 | "HI_AND_GR_REGS", \ |
2030 | "LO_AND_GR_REGS", \ | |
ab093b81 | 2031 | "HI_AND_FP_REGS", \ |
d604bca3 MH |
2032 | "COP0_AND_GR_REGS", \ |
2033 | "COP2_AND_GR_REGS", \ | |
2034 | "COP3_AND_GR_REGS", \ | |
2035 | "ALL_COP_REGS", \ | |
2036 | "ALL_COP_AND_GR_REGS", \ | |
e75b25e7 MM |
2037 | "ST_REGS", \ |
2038 | "ALL_REGS" \ | |
2039 | } | |
2040 | ||
2041 | /* An initializer containing the contents of the register classes, | |
2042 | as integers which are bit masks. The Nth integer specifies the | |
2043 | contents of class N. The way the integer MASK is interpreted is | |
2044 | that register R is in the class if `MASK & (1 << R)' is 1. | |
2045 | ||
2046 | When the machine has more than 32 registers, an integer does not | |
2047 | suffice. Then the integers are replaced by sub-initializers, | |
2048 | braced groupings containing several integers. Each | |
2049 | sub-initializer must be suitable as an initializer for the type | |
2050 | `HARD_REG_SET' which is defined in `hard-reg-set.h'. */ | |
2051 | ||
2052 | #define REG_CLASS_CONTENTS \ | |
2053 | { \ | |
d604bca3 MH |
2054 | { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* no registers */ \ |
2055 | { 0x0003000c, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* mips16 nonarg regs */\ | |
2056 | { 0x000300fc, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* mips16 registers */ \ | |
2057 | { 0x01000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* mips16 T register */ \ | |
2058 | { 0x010300fc, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* mips16 and T regs */ \ | |
cafe096b EC |
2059 | { 0x02000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* SVR4 PIC function address register */ \ |
2060 | { 0xfdffffff, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* Every other GPR */ \ | |
d604bca3 MH |
2061 | { 0xffffffff, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* integer registers */ \ |
2062 | { 0x00000000, 0xffffffff, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* floating registers*/ \ | |
2063 | { 0x00000000, 0x00000000, 0x00000001, 0x00000000, 0x00000000, 0x00000000 }, /* hi register */ \ | |
2064 | { 0x00000000, 0x00000000, 0x00000002, 0x00000000, 0x00000000, 0x00000000 }, /* lo register */ \ | |
d604bca3 MH |
2065 | { 0x00000000, 0x00000000, 0x00000003, 0x00000000, 0x00000000, 0x00000000 }, /* mul/div registers */ \ |
2066 | { 0x00000000, 0x00000000, 0xffff0000, 0x0000ffff, 0x00000000, 0x00000000 }, /* cop0 registers */ \ | |
2067 | { 0x00000000, 0x00000000, 0x00000000, 0xffff0000, 0x0000ffff, 0x00000000 }, /* cop2 registers */ \ | |
2068 | { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0xffff0000, 0x0000ffff }, /* cop3 registers */ \ | |
2069 | { 0xffffffff, 0x00000000, 0x00000001, 0x00000000, 0x00000000, 0x00000000 }, /* union classes */ \ | |
2070 | { 0xffffffff, 0x00000000, 0x00000002, 0x00000000, 0x00000000, 0x00000000 }, \ | |
d604bca3 MH |
2071 | { 0x00000000, 0xffffffff, 0x00000001, 0x00000000, 0x00000000, 0x00000000 }, \ |
2072 | { 0xffffffff, 0x00000000, 0xffff0000, 0x0000ffff, 0x00000000, 0x00000000 }, \ | |
2073 | { 0xffffffff, 0x00000000, 0x00000000, 0xffff0000, 0x0000ffff, 0x00000000 }, \ | |
2074 | { 0xffffffff, 0x00000000, 0x00000000, 0x00000000, 0xffff0000, 0x0000ffff }, \ | |
2075 | { 0x00000000, 0x00000000, 0xffff0000, 0xffffffff, 0xffffffff, 0x0000ffff }, \ | |
2076 | { 0xffffffff, 0x00000000, 0xffff0000, 0xffffffff, 0xffffffff, 0x0000ffff }, \ | |
2077 | { 0x00000000, 0x00000000, 0x000007f8, 0x00000000, 0x00000000, 0x00000000 }, /* status registers */ \ | |
2078 | { 0xffffffff, 0xffffffff, 0xffff07ff, 0xffffffff, 0xffffffff, 0x0000ffff } /* all registers */ \ | |
e75b25e7 MM |
2079 | } |
2080 | ||
2081 | ||
2082 | /* A C expression whose value is a register class containing hard | |
2083 | register REGNO. In general there is more that one such class; | |
2084 | choose a class which is "minimal", meaning that no smaller class | |
2085 | also contains the register. */ | |
2086 | ||
8b60264b | 2087 | extern const enum reg_class mips_regno_to_class[]; |
e75b25e7 MM |
2088 | |
2089 | #define REGNO_REG_CLASS(REGNO) mips_regno_to_class[ (REGNO) ] | |
2090 | ||
2091 | /* A macro whose definition is the name of the class to which a | |
2092 | valid base register must belong. A base register is one used in | |
2093 | an address which is the register value plus a displacement. */ | |
2094 | ||
2bcb2ab3 | 2095 | #define BASE_REG_CLASS (TARGET_MIPS16 ? M16_REGS : GR_REGS) |
e75b25e7 MM |
2096 | |
2097 | /* A macro whose definition is the name of the class to which a | |
2098 | valid index register must belong. An index register is one used | |
2099 | in an address where its value is either multiplied by a scale | |
2100 | factor or added to another register (as well as added to a | |
2101 | displacement). */ | |
2102 | ||
876c09d3 | 2103 | #define INDEX_REG_CLASS NO_REGS |
e75b25e7 | 2104 | |
2bcb2ab3 GK |
2105 | /* When SMALL_REGISTER_CLASSES is nonzero, the compiler allows |
2106 | registers explicitly used in the rtl to be used as spill registers | |
2107 | but prevents the compiler from extending the lifetime of these | |
987ba558 | 2108 | registers. */ |
2bcb2ab3 GK |
2109 | |
2110 | #define SMALL_REGISTER_CLASSES (TARGET_MIPS16) | |
2111 | ||
2112 | /* This macro is used later on in the file. */ | |
2113 | #define GR_REG_CLASS_P(CLASS) \ | |
2114 | ((CLASS) == GR_REGS || (CLASS) == M16_REGS || (CLASS) == T_REG \ | |
cafe096b EC |
2115 | || (CLASS) == M16_T_REGS || (CLASS) == M16_NA_REGS \ |
2116 | || (CLASS) == PIC_FN_ADDR_REG || (CLASS) == LEA_REGS) | |
2bcb2ab3 | 2117 | |
d604bca3 MH |
2118 | /* This macro is also used later on in the file. */ |
2119 | #define COP_REG_CLASS_P(CLASS) \ | |
2120 | ((CLASS) == COP0_REGS || (CLASS) == COP2_REGS || (CLASS) == COP3_REGS) | |
2121 | ||
2bcb2ab3 GK |
2122 | /* REG_ALLOC_ORDER is to order in which to allocate registers. This |
2123 | is the default value (allocate the registers in numeric order). We | |
2124 | define it just so that we can override it for the mips16 target in | |
2125 | ORDER_REGS_FOR_LOCAL_ALLOC. */ | |
2126 | ||
2127 | #define REG_ALLOC_ORDER \ | |
2128 | { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, \ | |
2129 | 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, \ | |
2130 | 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, \ | |
2131 | 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, \ | |
d604bca3 MH |
2132 | 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, \ |
2133 | 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, \ | |
2134 | 96, 97, 98, 99, 100,101,102,103,104,105,106,107,108,109,110,111, \ | |
2135 | 112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127, \ | |
2136 | 128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143, \ | |
2137 | 144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159, \ | |
2138 | 160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175 \ | |
2bcb2ab3 GK |
2139 | } |
2140 | ||
2141 | /* ORDER_REGS_FOR_LOCAL_ALLOC is a macro which permits reg_alloc_order | |
2142 | to be rearranged based on a particular function. On the mips16, we | |
2143 | want to allocate $24 (T_REG) before other registers for | |
2144 | instructions for which it is possible. */ | |
2145 | ||
2146 | #define ORDER_REGS_FOR_LOCAL_ALLOC mips_order_regs_for_local_alloc () | |
e75b25e7 MM |
2147 | |
2148 | /* REGISTER AND CONSTANT CLASSES */ | |
2149 | ||
2150 | /* Get reg_class from a letter such as appears in the machine | |
2151 | description. | |
2152 | ||
2153 | DEFINED REGISTER CLASSES: | |
2154 | ||
2155 | 'd' General (aka integer) registers | |
2bcb2ab3 GK |
2156 | Normally this is GR_REGS, but in mips16 mode this is M16_REGS |
2157 | 'y' General registers (in both mips16 and non mips16 mode) | |
2158 | 'e' mips16 non argument registers (M16_NA_REGS) | |
2159 | 't' mips16 temporary register ($24) | |
e75b25e7 MM |
2160 | 'f' Floating point registers |
2161 | 'h' Hi register | |
2162 | 'l' Lo register | |
34b650b3 | 2163 | 'x' Multiply/divide registers |
225b8835 | 2164 | 'z' FP Status register |
d604bca3 MH |
2165 | 'B' Cop0 register |
2166 | 'C' Cop2 register | |
2167 | 'D' Cop3 register | |
225b8835 | 2168 | 'b' All registers */ |
e75b25e7 | 2169 | |
f540a7d3 | 2170 | extern enum reg_class mips_char_to_class[256]; |
e75b25e7 | 2171 | |
8f54374e | 2172 | #define REG_CLASS_FROM_LETTER(C) mips_char_to_class[(unsigned char)(C)] |
e75b25e7 | 2173 | |
cafe096b EC |
2174 | /* True if VALUE is a signed 16-bit number. */ |
2175 | ||
2176 | #define SMALL_OPERAND(VALUE) \ | |
2177 | ((unsigned HOST_WIDE_INT) (VALUE) + 0x8000 < 0x10000) | |
2178 | ||
2179 | /* True if VALUE is an unsigned 16-bit number. */ | |
2180 | ||
2181 | #define SMALL_OPERAND_UNSIGNED(VALUE) \ | |
2182 | (((VALUE) & ~(unsigned HOST_WIDE_INT) 0xffff) == 0) | |
2183 | ||
2184 | /* True if VALUE can be loaded into a register using LUI. */ | |
2185 | ||
2186 | #define LUI_OPERAND(VALUE) \ | |
2187 | (((VALUE) | 0x7fff0000) == 0x7fff0000 \ | |
2188 | || ((VALUE) | 0x7fff0000) + 0x10000 == 0) | |
2189 | ||
2190 | /* Return a value X with the low 16 bits clear, and such that | |
2191 | VALUE - X is a signed 16-bit value. */ | |
2192 | ||
2193 | #define CONST_HIGH_PART(VALUE) \ | |
2194 | (((VALUE) + 0x8000) & ~(unsigned HOST_WIDE_INT) 0xffff) | |
2195 | ||
2196 | #define CONST_LOW_PART(VALUE) \ | |
2197 | ((VALUE) - CONST_HIGH_PART (VALUE)) | |
2198 | ||
2199 | #define SMALL_INT(X) SMALL_OPERAND (INTVAL (X)) | |
2200 | #define SMALL_INT_UNSIGNED(X) SMALL_OPERAND_UNSIGNED (INTVAL (X)) | |
2201 | #define LUI_INT(X) LUI_OPERAND (INTVAL (X)) | |
2202 | ||
e75b25e7 MM |
2203 | /* The letters I, J, K, L, M, N, O, and P in a register constraint |
2204 | string can be used to stand for particular ranges of immediate | |
2205 | operands. This macro defines what the ranges are. C is the | |
2206 | letter, and VALUE is a constant value. Return 1 if VALUE is | |
2207 | in the range specified by C. */ | |
2208 | ||
2209 | /* For MIPS: | |
2210 | ||
2211 | `I' is used for the range of constants an arithmetic insn can | |
2212 | actually contain (16 bits signed integers). | |
2213 | ||
2214 | `J' is used for the range which is just zero (ie, $r0). | |
2215 | ||
2216 | `K' is used for the range of constants a logical insn can actually | |
2217 | contain (16 bit zero-extended integers). | |
2218 | ||
2219 | `L' is used for the range of constants that be loaded with lui | |
2220 | (ie, the bottom 16 bits are zero). | |
2221 | ||
2222 | `M' is used for the range of constants that take two words to load | |
2223 | (ie, not matched by `I', `K', and `L'). | |
2224 | ||
2bcb2ab3 | 2225 | `N' is used for negative 16 bit constants other than -65536. |
e75b25e7 | 2226 | |
2bcb2ab3 | 2227 | `O' is a 15 bit signed integer. |
e75b25e7 MM |
2228 | |
2229 | `P' is used for positive 16 bit constants. */ | |
2230 | ||
e75b25e7 | 2231 | #define CONST_OK_FOR_LETTER_P(VALUE, C) \ |
cafe096b | 2232 | ((C) == 'I' ? SMALL_OPERAND (VALUE) \ |
e75b25e7 | 2233 | : (C) == 'J' ? ((VALUE) == 0) \ |
cafe096b EC |
2234 | : (C) == 'K' ? SMALL_OPERAND_UNSIGNED (VALUE) \ |
2235 | : (C) == 'L' ? LUI_OPERAND (VALUE) \ | |
2236 | : (C) == 'M' ? (!SMALL_OPERAND (VALUE) \ | |
2237 | && !SMALL_OPERAND_UNSIGNED (VALUE) \ | |
2238 | && !LUI_OPERAND (VALUE)) \ | |
2bcb2ab3 GK |
2239 | : (C) == 'N' ? ((unsigned HOST_WIDE_INT) ((VALUE) + 0xffff) < 0xffff) \ |
2240 | : (C) == 'O' ? ((unsigned HOST_WIDE_INT) ((VALUE) + 0x4000) < 0x8000) \ | |
99cbc4b0 | 2241 | : (C) == 'P' ? ((VALUE) != 0 && (((VALUE) & ~0x0000ffff) == 0)) \ |
e75b25e7 MM |
2242 | : 0) |
2243 | ||
2244 | /* Similar, but for floating constants, and defining letters G and H. | |
2245 | Here VALUE is the CONST_DOUBLE rtx itself. */ | |
2246 | ||
2247 | /* For Mips | |
2248 | ||
2249 | 'G' : Floating point 0 */ | |
2250 | ||
2251 | #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \ | |
2252 | ((C) == 'G' \ | |
876c09d3 | 2253 | && (VALUE) == CONST0_RTX (GET_MODE (VALUE))) |
e75b25e7 | 2254 | |
cafe096b EC |
2255 | /* True if OP is a constant that should not be moved into $25. |
2256 | We need this because many versions of gas treat 'la $25,foo' as | |
2257 | part of a call sequence and allow a global 'foo' to be lazily bound. */ | |
2258 | ||
2259 | #define DANGEROUS_FOR_LA25_P(OP) \ | |
2260 | (TARGET_ABICALLS \ | |
2261 | && !TARGET_EXPLICIT_RELOCS \ | |
2262 | && mips_global_pic_constant_p (OP)) | |
2263 | ||
e75b25e7 | 2264 | /* Letters in the range `Q' through `U' may be defined in a |
7dac2f89 | 2265 | machine-dependent fashion to stand for arbitrary operand types. |
e75b25e7 MM |
2266 | The machine description macro `EXTRA_CONSTRAINT' is passed the |
2267 | operand as its first argument and the constraint letter as its | |
2268 | second operand. | |
2269 | ||
cafe096b EC |
2270 | `Q' is for signed 16-bit constants. |
2271 | `R' is for single-instruction memory references. Note that this | |
2272 | constraint has often been used in linux and glibc code. | |
2273 | `S' is for legitimate constant call addresses. | |
2274 | `T' is for constant move_operands that cannot be safely loaded into $25. | |
2275 | `U' is for constant move_operands that can be safely loaded into $25. */ | |
e75b25e7 MM |
2276 | |
2277 | #define EXTRA_CONSTRAINT(OP,CODE) \ | |
cafe096b EC |
2278 | (((CODE) == 'Q') ? const_arith_operand (OP, VOIDmode) \ |
2279 | : ((CODE) == 'R') ? (GET_CODE (OP) == MEM \ | |
2280 | && mips_fetch_insns (OP) == 1) \ | |
2281 | : ((CODE) == 'S') ? (CONSTANT_P (OP) \ | |
2282 | && call_insn_operand (OP, VOIDmode)) \ | |
2283 | : ((CODE) == 'T') ? (CONSTANT_P (OP) \ | |
2284 | && move_operand (OP, VOIDmode) \ | |
2285 | && DANGEROUS_FOR_LA25_P (OP)) \ | |
2286 | : ((CODE) == 'U') ? (CONSTANT_P (OP) \ | |
2287 | && move_operand (OP, VOIDmode) \ | |
2288 | && !DANGEROUS_FOR_LA25_P (OP)) \ | |
e75b25e7 MM |
2289 | : FALSE) |
2290 | ||
2291 | /* Given an rtx X being reloaded into a reg required to be | |
2292 | in class CLASS, return the class of reg to actually use. | |
2293 | In general this is just CLASS; but on some machines | |
2294 | in some cases it is preferable to use a more restrictive class. */ | |
2295 | ||
2296 | #define PREFERRED_RELOAD_CLASS(X,CLASS) \ | |
876c09d3 | 2297 | ((CLASS) != ALL_REGS \ |
2bcb2ab3 GK |
2298 | ? (! TARGET_MIPS16 \ |
2299 | ? (CLASS) \ | |
2300 | : ((CLASS) != GR_REGS \ | |
2301 | ? (CLASS) \ | |
2302 | : M16_REGS)) \ | |
876c09d3 JW |
2303 | : ((GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \ |
2304 | || GET_MODE_CLASS (GET_MODE (X)) == MODE_COMPLEX_FLOAT) \ | |
2bcb2ab3 GK |
2305 | ? (TARGET_SOFT_FLOAT \ |
2306 | ? (TARGET_MIPS16 ? M16_REGS : GR_REGS) \ | |
2307 | : FP_REGS) \ | |
876c09d3 JW |
2308 | : ((GET_MODE_CLASS (GET_MODE (X)) == MODE_INT \ |
2309 | || GET_MODE (X) == VOIDmode) \ | |
2bcb2ab3 | 2310 | ? (TARGET_MIPS16 ? M16_REGS : GR_REGS) \ |
876c09d3 | 2311 | : (CLASS)))) |
e75b25e7 | 2312 | |
0fb5ac6f MM |
2313 | /* Certain machines have the property that some registers cannot be |
2314 | copied to some other registers without using memory. Define this | |
a0ab749a | 2315 | macro on those machines to be a C expression that is nonzero if |
0fb5ac6f MM |
2316 | objects of mode MODE in registers of CLASS1 can only be copied to |
2317 | registers of class CLASS2 by storing a register of CLASS1 into | |
2318 | memory and loading that memory location into a register of CLASS2. | |
2319 | ||
2320 | Do not define this macro if its value would always be zero. */ | |
7b2e1077 | 2321 | #if 0 |
0fb5ac6f | 2322 | #define SECONDARY_MEMORY_NEEDED(CLASS1, CLASS2, MODE) \ |
2370b831 JW |
2323 | ((!TARGET_DEBUG_H_MODE \ |
2324 | && GET_MODE_CLASS (MODE) == MODE_INT \ | |
2bcb2ab3 GK |
2325 | && ((CLASS1 == FP_REGS && GR_REG_CLASS_P (CLASS2)) \ |
2326 | || (GR_REG_CLASS_P (CLASS1) && CLASS2 == FP_REGS))) \ | |
2370b831 | 2327 | || (TARGET_FLOAT64 && !TARGET_64BIT && (MODE) == DFmode \ |
2bcb2ab3 GK |
2328 | && ((GR_REG_CLASS_P (CLASS1) && CLASS2 == FP_REGS) \ |
2329 | || (GR_REG_CLASS_P (CLASS2) && CLASS1 == FP_REGS)))) | |
7b2e1077 | 2330 | #endif |
46299de9 | 2331 | /* The HI and LO registers can only be reloaded via the general |
b8eb88d0 ILT |
2332 | registers. Condition code registers can only be loaded to the |
2333 | general registers, and from the floating point registers. */ | |
46299de9 | 2334 | |
225b8835 ILT |
2335 | #define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, X) \ |
2336 | mips_secondary_reload_class (CLASS, MODE, X, 1) | |
2337 | #define SECONDARY_OUTPUT_RELOAD_CLASS(CLASS, MODE, X) \ | |
2338 | mips_secondary_reload_class (CLASS, MODE, X, 0) | |
46299de9 | 2339 | |
e75b25e7 MM |
2340 | /* Return the maximum number of consecutive registers |
2341 | needed to represent mode MODE in a register of class CLASS. */ | |
2342 | ||
d604bca3 | 2343 | #define CLASS_MAX_NREGS(CLASS, MODE) mips_class_max_nregs (CLASS, MODE) |
e75b25e7 | 2344 | |
b0c42aed JH |
2345 | #define CANNOT_CHANGE_MODE_CLASS(FROM, TO, CLASS) \ |
2346 | mips_cannot_change_mode_class (FROM, TO, CLASS) | |
e75b25e7 MM |
2347 | \f |
2348 | /* Stack layout; function entry, exit and calling. */ | |
2349 | ||
e75b25e7 MM |
2350 | #define STACK_GROWS_DOWNWARD |
2351 | ||
f833ffd4 RS |
2352 | /* The offset of the first local variable from the beginning of the frame. |
2353 | See compute_frame_size for details about the frame layout. */ | |
24e214e3 JW |
2354 | #define STARTING_FRAME_OFFSET \ |
2355 | (current_function_outgoing_args_size \ | |
f833ffd4 RS |
2356 | + (TARGET_ABICALLS && !TARGET_NEWABI \ |
2357 | ? MIPS_STACK_ALIGN (UNITS_PER_WORD) : 0)) | |
ab78d4a8 MM |
2358 | |
2359 | /* Offset from the stack pointer register to an item dynamically | |
2360 | allocated on the stack, e.g., by `alloca'. | |
2361 | ||
2362 | The default value for this macro is `STACK_POINTER_OFFSET' plus the | |
2363 | length of the outgoing arguments. The default is correct for most | |
2364 | machines. See `function.c' for details. | |
2365 | ||
51bdc4d3 MM |
2366 | The MIPS ABI states that functions which dynamically allocate the |
2367 | stack must not have 0 for STACK_DYNAMIC_OFFSET, since it looks like | |
2368 | we are trying to create a second frame pointer to the function, so | |
2369 | allocate some stack space to make it happy. | |
ab78d4a8 | 2370 | |
51bdc4d3 MM |
2371 | However, the linker currently complains about linking any code that |
2372 | dynamically allocates stack space, and there seems to be a bug in | |
2373 | STACK_DYNAMIC_OFFSET, so don't define this right now. */ | |
2374 | ||
2375 | #if 0 | |
ab78d4a8 MM |
2376 | #define STACK_DYNAMIC_OFFSET(FUNDECL) \ |
2377 | ((current_function_outgoing_args_size == 0 && current_function_calls_alloca) \ | |
2378 | ? 4*UNITS_PER_WORD \ | |
2379 | : current_function_outgoing_args_size) | |
51bdc4d3 | 2380 | #endif |
e75b25e7 | 2381 | |
ce3649d2 | 2382 | /* The return address for the current frame is in r31 if this is a leaf |
39dffea3 JW |
2383 | function. Otherwise, it is on the stack. It is at a variable offset |
2384 | from sp/fp/ap, so we define a fake hard register rap which is a | |
2385 | poiner to the return address on the stack. This always gets eliminated | |
2386 | during reload to be either the frame pointer or the stack pointer plus | |
2387 | an offset. */ | |
2388 | ||
cafe096b | 2389 | #define RETURN_ADDR_RTX mips_return_addr |
39dffea3 | 2390 | |
7f48c9e1 AO |
2391 | /* Since the mips16 ISA mode is encoded in the least-significant bit |
2392 | of the address, mask it off return addresses for purposes of | |
2393 | finding exception handling regions. */ | |
2394 | ||
2395 | #define MASK_RETURN_ADDR GEN_INT (-2) | |
2396 | ||
cafe096b | 2397 | |
7f48c9e1 AO |
2398 | /* Similarly, don't use the least-significant bit to tell pointers to |
2399 | code from vtable index. */ | |
2400 | ||
2401 | #define TARGET_PTRMEMFUNC_VBIT_LOCATION ptrmemfunc_vbit_in_delta | |
2402 | ||
ab78d4a8 MM |
2403 | /* If defined, this macro specifies a table of register pairs used to |
2404 | eliminate unneeded registers that point into the stack frame. If | |
2405 | it is not defined, the only elimination attempted by the compiler | |
2406 | is to replace references to the frame pointer with references to | |
2407 | the stack pointer. | |
2408 | ||
2409 | The definition of this macro is a list of structure | |
2410 | initializations, each of which specifies an original and | |
2411 | replacement register. | |
2412 | ||
2413 | On some machines, the position of the argument pointer is not | |
2414 | known until the compilation is completed. In such a case, a | |
7dac2f89 | 2415 | separate hard register must be used for the argument pointer. |
ab78d4a8 MM |
2416 | This register can be eliminated by replacing it with either the |
2417 | frame pointer or the argument pointer, depending on whether or not | |
2418 | the frame pointer has been eliminated. | |
2419 | ||
2420 | In this case, you might specify: | |
2421 | #define ELIMINABLE_REGS \ | |
2422 | {{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ | |
2423 | {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \ | |
2424 | {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}} | |
2425 | ||
2426 | Note that the elimination of the argument pointer with the stack | |
2bcb2ab3 GK |
2427 | pointer is specified first since that is the preferred elimination. |
2428 | ||
2429 | The eliminations to $17 are only used on the mips16. See the | |
2430 | definition of HARD_FRAME_POINTER_REGNUM. */ | |
ab78d4a8 MM |
2431 | |
2432 | #define ELIMINABLE_REGS \ | |
2433 | {{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ | |
2bcb2ab3 GK |
2434 | { ARG_POINTER_REGNUM, GP_REG_FIRST + 30}, \ |
2435 | { ARG_POINTER_REGNUM, GP_REG_FIRST + 17}, \ | |
2bcb2ab3 GK |
2436 | { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ |
2437 | { FRAME_POINTER_REGNUM, GP_REG_FIRST + 30}, \ | |
2438 | { FRAME_POINTER_REGNUM, GP_REG_FIRST + 17}} | |
ab78d4a8 | 2439 | |
a0ab749a | 2440 | /* A C expression that returns nonzero if the compiler is allowed to |
ab78d4a8 MM |
2441 | try to replace register number FROM-REG with register number |
2442 | TO-REG. This macro need only be defined if `ELIMINABLE_REGS' is | |
2443 | defined, and will usually be the constant 1, since most of the | |
2444 | cases preventing register elimination are things that the compiler | |
2bcb2ab3 GK |
2445 | already knows about. |
2446 | ||
365ca18b GK |
2447 | When not in mips16 and mips64, we can always eliminate to the |
2448 | frame pointer. We can eliminate to the stack pointer unless | |
2449 | a frame pointer is needed. In mips16 mode, we need a frame | |
2450 | pointer for a large frame; otherwise, reload may be unable | |
2451 | to compute the address of a local variable, since there is | |
2452 | no way to add a large constant to the stack pointer | |
2453 | without using a temporary register. | |
2454 | ||
2455 | In mips16, for some instructions (eg lwu), we can't eliminate the | |
2456 | frame pointer for the stack pointer. These instructions are | |
2457 | only generated in TARGET_64BIT mode. | |
2458 | */ | |
ab78d4a8 MM |
2459 | |
2460 | #define CAN_ELIMINATE(FROM, TO) \ | |
cafe096b | 2461 | (((TO) == HARD_FRAME_POINTER_REGNUM \ |
cfb773f9 AO |
2462 | || ((TO) == STACK_POINTER_REGNUM && ! frame_pointer_needed \ |
2463 | && ! (TARGET_MIPS16 && TARGET_64BIT) \ | |
2464 | && (! TARGET_MIPS16 \ | |
cafe096b | 2465 | || compute_frame_size (get_frame_size ()) < 32768)))) |
ab78d4a8 | 2466 | |
b2471838 RS |
2467 | #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ |
2468 | (OFFSET) = mips_initial_elimination_offset ((FROM), (TO)) | |
ab78d4a8 | 2469 | |
e75b25e7 MM |
2470 | /* If we generate an insn to push BYTES bytes, |
2471 | this says how many the stack pointer really advances by. | |
8aeea6e6 | 2472 | On the VAX, sp@- in a byte insn really pushes a word. */ |
e75b25e7 MM |
2473 | |
2474 | /* #define PUSH_ROUNDING(BYTES) 0 */ | |
2475 | ||
2476 | /* If defined, the maximum amount of space required for outgoing | |
2477 | arguments will be computed and placed into the variable | |
2478 | `current_function_outgoing_args_size'. No space will be pushed | |
2479 | onto the stack for each call; instead, the function prologue | |
2480 | should increase the stack frame size by this amount. | |
2481 | ||
2482 | It is not proper to define both `PUSH_ROUNDING' and | |
2483 | `ACCUMULATE_OUTGOING_ARGS'. */ | |
f73ad30e | 2484 | #define ACCUMULATE_OUTGOING_ARGS 1 |
e75b25e7 | 2485 | |
6cb6c3b3 MM |
2486 | /* Offset from the argument pointer register to the first argument's |
2487 | address. On some machines it may depend on the data type of the | |
2488 | function. | |
e75b25e7 | 2489 | |
6cb6c3b3 | 2490 | If `ARGS_GROW_DOWNWARD', this is the offset to the location above |
39282292 MM |
2491 | the first argument's address. |
2492 | ||
2493 | On the MIPS, we must skip the first argument position if we are | |
876c09d3 | 2494 | returning a structure or a union, to account for its address being |
305aa9e2 MM |
2495 | passed in $4. However, at the current time, this produces a compiler |
2496 | that can't bootstrap, so comment it out for now. */ | |
e75b25e7 | 2497 | |
305aa9e2 | 2498 | #if 0 |
6cb6c3b3 MM |
2499 | #define FIRST_PARM_OFFSET(FNDECL) \ |
2500 | (FNDECL != 0 \ | |
2501 | && TREE_TYPE (FNDECL) != 0 \ | |
2502 | && TREE_TYPE (TREE_TYPE (FNDECL)) != 0 \ | |
2503 | && (TREE_CODE (TREE_TYPE (TREE_TYPE (FNDECL))) == RECORD_TYPE \ | |
39282292 MM |
2504 | || TREE_CODE (TREE_TYPE (TREE_TYPE (FNDECL))) == UNION_TYPE) \ |
2505 | ? UNITS_PER_WORD \ | |
2506 | : 0) | |
305aa9e2 MM |
2507 | #else |
2508 | #define FIRST_PARM_OFFSET(FNDECL) 0 | |
2509 | #endif | |
e75b25e7 MM |
2510 | |
2511 | /* When a parameter is passed in a register, stack space is still | |
2512 | allocated for it. For the MIPS, stack space must be allocated, cf | |
2513 | Asm Lang Prog Guide page 7-8. | |
2514 | ||
2515 | BEWARE that some space is also allocated for non existing arguments | |
2516 | in register. In case an argument list is of form GF used registers | |
2517 | are a0 (a2,a3), but we should push over a1... */ | |
2518 | ||
ac8ab9fe RS |
2519 | #define REG_PARM_STACK_SPACE(FNDECL) \ |
2520 | ((mips_abi == ABI_32 || mips_abi == ABI_O64) \ | |
2521 | ? (MAX_ARGS_IN_REGISTERS * UNITS_PER_WORD) - FIRST_PARM_OFFSET (FNDECL) \ | |
2522 | : 0) | |
e75b25e7 MM |
2523 | |
2524 | /* Define this if it is the responsibility of the caller to | |
7dac2f89 | 2525 | allocate the area reserved for arguments passed in registers. |
e75b25e7 | 2526 | If `ACCUMULATE_OUTGOING_ARGS' is also defined, the only effect |
7dac2f89 | 2527 | of this macro is to determine whether the space is included in |
e75b25e7 MM |
2528 | `current_function_outgoing_args_size'. */ |
2529 | #define OUTGOING_REG_PARM_STACK_SPACE | |
2530 | ||
ac8ab9fe RS |
2531 | #define STACK_BOUNDARY \ |
2532 | ((mips_abi == ABI_32 || mips_abi == ABI_O64 || mips_abi == ABI_EABI) \ | |
2533 | ? 64 : 128) | |
e75b25e7 | 2534 | |
876c09d3 | 2535 | /* Make sure 4 words are always allocated on the stack. */ |
e75b25e7 MM |
2536 | |
2537 | #ifndef STACK_ARGS_ADJUST | |
2538 | #define STACK_ARGS_ADJUST(SIZE) \ | |
2539 | { \ | |
876c09d3 JW |
2540 | if (SIZE.constant < 4 * UNITS_PER_WORD) \ |
2541 | SIZE.constant = 4 * UNITS_PER_WORD; \ | |
e75b25e7 MM |
2542 | } |
2543 | #endif | |
2544 | ||
2545 | \f | |
2546 | /* A C expression that should indicate the number of bytes of its | |
38e01259 | 2547 | own arguments that a function pops on returning, or 0 |
e75b25e7 MM |
2548 | if the function pops no arguments and the caller must therefore |
2549 | pop them all after the function returns. | |
2550 | ||
8b109b37 RK |
2551 | FUNDECL is the declaration node of the function (as a tree). |
2552 | ||
e75b25e7 MM |
2553 | FUNTYPE is a C variable whose value is a tree node that |
2554 | describes the function in question. Normally it is a node of | |
2555 | type `FUNCTION_TYPE' that describes the data type of the function. | |
2556 | From this it is possible to obtain the data types of the value | |
2557 | and arguments (if known). | |
2558 | ||
2559 | When a call to a library function is being considered, FUNTYPE | |
2560 | will contain an identifier node for the library function. Thus, | |
2561 | if you need to distinguish among various library functions, you | |
2562 | can do so by their names. Note that "library function" in this | |
2563 | context means a function used to perform arithmetic, whose name | |
2564 | is known specially in the compiler and was not mentioned in the | |
2565 | C code being compiled. | |
2566 | ||
2567 | STACK-SIZE is the number of bytes of arguments passed on the | |
2568 | stack. If a variable number of bytes is passed, it is zero, and | |
2569 | argument popping will always be the responsibility of the | |
2570 | calling function. */ | |
2571 | ||
8b109b37 | 2572 | #define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE) 0 |
e75b25e7 MM |
2573 | |
2574 | ||
2575 | /* Symbolic macros for the registers used to return integer and floating | |
2576 | point values. */ | |
2577 | ||
2578 | #define GP_RETURN (GP_REG_FIRST + 2) | |
2579 | #define FP_RETURN ((TARGET_SOFT_FLOAT) ? GP_RETURN : (FP_REG_FIRST + 0)) | |
2580 | ||
ac8ab9fe RS |
2581 | #define MAX_ARGS_IN_REGISTERS \ |
2582 | ((mips_abi == ABI_32 || mips_abi == ABI_O64) ? 4 : 8) | |
2583 | ||
2584 | /* Largest possible value of MAX_ARGS_IN_REGISTERS. */ | |
2585 | ||
2586 | #define BIGGEST_MAX_ARGS_IN_REGISTERS 8 | |
2587 | ||
e75b25e7 MM |
2588 | /* Symbolic macros for the first/last argument registers. */ |
2589 | ||
2590 | #define GP_ARG_FIRST (GP_REG_FIRST + 4) | |
ac8ab9fe | 2591 | #define GP_ARG_LAST (GP_ARG_FIRST + MAX_ARGS_IN_REGISTERS - 1) |
e75b25e7 | 2592 | #define FP_ARG_FIRST (FP_REG_FIRST + 12) |
ac8ab9fe | 2593 | #define FP_ARG_LAST (FP_ARG_FIRST + MAX_ARGS_IN_REGISTERS - 1) |
e75b25e7 MM |
2594 | |
2595 | /* Define how to find the value returned by a library function | |
2bcb2ab3 GK |
2596 | assuming the value has mode MODE. Because we define |
2597 | PROMOTE_FUNCTION_RETURN, we must promote the mode just as | |
2598 | PROMOTE_MODE does. */ | |
e75b25e7 | 2599 | |
c6e6f5c1 RH |
2600 | #define LIBCALL_VALUE(MODE) \ |
2601 | mips_function_value (NULL_TREE, NULL, (MODE)) | |
e75b25e7 MM |
2602 | |
2603 | /* Define how to find the value returned by a function. | |
2604 | VALTYPE is the data type of the value (as a tree). | |
2605 | If the precise function being called is known, FUNC is its FUNCTION_DECL; | |
2606 | otherwise, FUNC is 0. */ | |
2607 | ||
c6e6f5c1 RH |
2608 | #define FUNCTION_VALUE(VALTYPE, FUNC) \ |
2609 | mips_function_value ((VALTYPE), (FUNC), VOIDmode) | |
e75b25e7 MM |
2610 | |
2611 | /* 1 if N is a possible register number for a function value. | |
2612 | On the MIPS, R2 R3 and F0 F2 are the only register thus used. | |
2613 | Currently, R2 and F0 are only implemented here (C has no complex type) */ | |
2614 | ||
8a381273 AO |
2615 | #define FUNCTION_VALUE_REGNO_P(N) ((N) == GP_RETURN || (N) == FP_RETURN \ |
2616 | || (LONG_DOUBLE_TYPE_SIZE == 128 && FP_RETURN != GP_RETURN \ | |
2617 | && (N) == FP_RETURN + 2)) | |
e75b25e7 | 2618 | |
46af8e31 JW |
2619 | /* 1 if N is a possible register number for function argument passing. |
2620 | We have no FP argument registers when soft-float. When FP registers | |
2621 | are 32 bits, we can't directly reference the odd numbered ones. */ | |
2622 | ||
2623 | #define FUNCTION_ARG_REGNO_P(N) \ | |
8bf3ccbb KG |
2624 | ((IN_RANGE((N), GP_ARG_FIRST, GP_ARG_LAST) \ |
2625 | || (IN_RANGE((N), FP_ARG_FIRST, FP_ARG_LAST) \ | |
2626 | && ((N) % FP_INC == 0) && mips_abi != ABI_O64)) \ | |
2627 | && !fixed_regs[N]) | |
e75b25e7 MM |
2628 | |
2629 | /* A C expression which can inhibit the returning of certain function | |
2630 | values in registers, based on the type of value. A nonzero value says | |
2631 | to return the function value in memory, just as large structures are | |
2632 | always returned. Here TYPE will be a C expression of type | |
2633 | `tree', representing the data type of the value. | |
2634 | ||
e14fa9c4 DE |
2635 | Note that values of mode `BLKmode' must be explicitly |
2636 | handled by this macro. Also, the option `-fpcc-struct-return' | |
e75b25e7 MM |
2637 | takes effect regardless of this macro. On most systems, it is |
2638 | possible to leave the macro undefined; this causes a default | |
e14fa9c4 DE |
2639 | definition to be used, whose value is the constant 1 for BLKmode |
2640 | values, and 0 otherwise. | |
e75b25e7 MM |
2641 | |
2642 | GCC normally converts 1 byte structures into chars, 2 byte | |
2643 | structs into shorts, and 4 byte structs into ints, and returns | |
2644 | them this way. Defining the following macro overrides this, | |
2645 | to give us MIPS cc compatibility. */ | |
2646 | ||
2647 | #define RETURN_IN_MEMORY(TYPE) \ | |
54401342 | 2648 | mips_return_in_memory (TYPE) |
4d72536e RS |
2649 | |
2650 | #define SETUP_INCOMING_VARARGS(CUM,MODE,TYPE,PRETEND_SIZE,NO_RTL) \ | |
2651 | (PRETEND_SIZE) = mips_setup_incoming_varargs (&(CUM), (MODE), \ | |
2652 | (TYPE), (NO_RTL)) | |
e75b25e7 | 2653 | \f |
ac8ab9fe RS |
2654 | #define STRICT_ARGUMENT_NAMING (mips_abi != ABI_32 && mips_abi != ABI_O64) |
2655 | ||
e75b25e7 MM |
2656 | /* Define a data type for recording info about an argument list |
2657 | during the scan of that argument list. This data type should | |
2658 | hold all necessary information about the function itself | |
2659 | and about the args processed so far, enough to enable macros | |
2660 | such as FUNCTION_ARG to determine where the next arg should go. | |
2bcb2ab3 | 2661 | |
4d72536e RS |
2662 | This structure has to cope with two different argument allocation |
2663 | schemes. Most MIPS ABIs view the arguments as a struct, of which the | |
2664 | first N words go in registers and the rest go on the stack. If I < N, | |
2665 | the Ith word might go in Ith integer argument register or the | |
2666 | Ith floating-point one. In some cases, it has to go in both (see | |
2667 | function_arg). For these ABIs, we only need to remember the number | |
2668 | of words passed so far. | |
2669 | ||
2670 | The EABI instead allocates the integer and floating-point arguments | |
2671 | separately. The first N words of FP arguments go in FP registers, | |
2672 | the rest go on the stack. Likewise, the first N words of the other | |
2673 | arguments go in integer registers, and the rest go on the stack. We | |
2674 | need to maintain three counts: the number of integer registers used, | |
2675 | the number of floating-point registers used, and the number of words | |
2676 | passed on the stack. | |
2677 | ||
2678 | We could keep separate information for the two ABIs (a word count for | |
2679 | the standard ABIs, and three separate counts for the EABI). But it | |
2680 | seems simpler to view the standard ABIs as forms of EABI that do not | |
2681 | allocate floating-point registers. | |
2682 | ||
2683 | So for the standard ABIs, the first N words are allocated to integer | |
2684 | registers, and function_arg decides on an argument-by-argument basis | |
2685 | whether that argument should really go in an integer register, or in | |
2686 | a floating-point one. */ | |
e75b25e7 MM |
2687 | |
2688 | typedef struct mips_args { | |
4d72536e RS |
2689 | /* Always true for varargs functions. Otherwise true if at least |
2690 | one argument has been passed in an integer register. */ | |
2691 | int gp_reg_found; | |
2692 | ||
2693 | /* The number of arguments seen so far. */ | |
2694 | unsigned int arg_number; | |
2695 | ||
2696 | /* For EABI, the number of integer registers used so far. For other | |
2697 | ABIs, the number of words passed in registers (whether integer | |
2698 | or floating-point). */ | |
bb63e5a0 | 2699 | unsigned int num_gprs; |
4d72536e RS |
2700 | |
2701 | /* For EABI, the number of floating-point registers used so far. */ | |
bb63e5a0 | 2702 | unsigned int num_fprs; |
4d72536e RS |
2703 | |
2704 | /* The number of words passed on the stack. */ | |
2705 | unsigned int stack_words; | |
2706 | ||
2707 | /* On the mips16, we need to keep track of which floating point | |
2708 | arguments were passed in general registers, but would have been | |
2709 | passed in the FP regs if this were a 32 bit function, so that we | |
2710 | can move them to the FP regs if we wind up calling a 32 bit | |
2711 | function. We record this information in fp_code, encoded in base | |
2712 | four. A zero digit means no floating point argument, a one digit | |
2713 | means an SFmode argument, and a two digit means a DFmode argument, | |
2714 | and a three digit is not used. The low order digit is the first | |
2715 | argument. Thus 6 == 1 * 4 + 2 means a DFmode argument followed by | |
2716 | an SFmode argument. ??? A more sophisticated approach will be | |
2717 | needed if MIPS_ABI != ABI_32. */ | |
2718 | int fp_code; | |
2719 | ||
2720 | /* True if the function has a prototype. */ | |
2721 | int prototype; | |
2722 | ||
2723 | /* When a structure does not take up a full register, the argument | |
2724 | should sometimes be shifted left so that it occupies the high part | |
2725 | of the register. These two fields describe an array of ashl | |
2726 | patterns for doing this. See function_arg_advance, which creates | |
2727 | the shift patterns, and function_arg, which returns them when given | |
2728 | a VOIDmode argument. */ | |
2729 | unsigned int num_adjusts; | |
ac8ab9fe | 2730 | rtx adjust[BIGGEST_MAX_ARGS_IN_REGISTERS]; |
e75b25e7 MM |
2731 | } CUMULATIVE_ARGS; |
2732 | ||
2733 | /* Initialize a variable CUM of type CUMULATIVE_ARGS | |
2734 | for a call to a function whose data type is FNTYPE. | |
2735 | For a library call, FNTYPE is 0. | |
2736 | ||
2737 | */ | |
2738 | ||
2c7ee1a6 | 2739 | #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME,INDIRECT) \ |
e75b25e7 MM |
2740 | init_cumulative_args (&CUM, FNTYPE, LIBNAME) \ |
2741 | ||
2742 | /* Update the data in CUM to advance over an argument | |
2743 | of mode MODE and data type TYPE. | |
2744 | (TYPE is null for libcalls where that information may not be available.) */ | |
2745 | ||
2746 | #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \ | |
2747 | function_arg_advance (&CUM, MODE, TYPE, NAMED) | |
2748 | ||
2749 | /* Determine where to put an argument to a function. | |
2750 | Value is zero to push the argument on the stack, | |
2751 | or a hard register in which to store the argument. | |
2752 | ||
2753 | MODE is the argument's machine mode. | |
2754 | TYPE is the data type of the argument (as a tree). | |
2755 | This is null for libcalls where that information may | |
2756 | not be available. | |
2757 | CUM is a variable of type CUMULATIVE_ARGS which gives info about | |
2758 | the preceding args and about the function being called. | |
2759 | NAMED is nonzero if this argument is a named parameter | |
2760 | (otherwise it is an extra parameter matching an ellipsis). */ | |
2761 | ||
2762 | #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \ | |
2763 | function_arg( &CUM, MODE, TYPE, NAMED) | |
2764 | ||
2765 | /* For an arg passed partly in registers and partly in memory, | |
2766 | this is the number of registers used. | |
987ba558 | 2767 | For args passed entirely in registers or entirely in memory, zero. */ |
e75b25e7 MM |
2768 | |
2769 | #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \ | |
2770 | function_arg_partial_nregs (&CUM, MODE, TYPE, NAMED) | |
2771 | ||
2772 | /* If defined, a C expression that gives the alignment boundary, in | |
2773 | bits, of an argument with the specified mode and type. If it is | |
2774 | not defined, `PARM_BOUNDARY' is used for all arguments. */ | |
2775 | ||
2776 | #define FUNCTION_ARG_BOUNDARY(MODE, TYPE) \ | |
2777 | (((TYPE) != 0) \ | |
75131237 | 2778 | ? ((TYPE_ALIGN(TYPE) <= PARM_BOUNDARY) \ |
e75b25e7 MM |
2779 | ? PARM_BOUNDARY \ |
2780 | : TYPE_ALIGN(TYPE)) \ | |
2781 | : ((GET_MODE_ALIGNMENT(MODE) <= PARM_BOUNDARY) \ | |
2782 | ? PARM_BOUNDARY \ | |
2783 | : GET_MODE_ALIGNMENT(MODE))) | |
2784 | ||
ac8ab9fe RS |
2785 | #define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) \ |
2786 | function_arg_pass_by_reference (&CUM, MODE, TYPE, NAMED) | |
2787 | ||
2788 | #define FUNCTION_ARG_PADDING(MODE, TYPE) \ | |
2789 | (! BYTES_BIG_ENDIAN \ | |
2790 | ? upward \ | |
2791 | : (((MODE) == BLKmode \ | |
2792 | ? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \ | |
2793 | && int_size_in_bytes (TYPE) < (PARM_BOUNDARY / BITS_PER_UNIT))\ | |
2794 | : (GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY \ | |
2795 | && (mips_abi == ABI_32 \ | |
2796 | || mips_abi == ABI_O64 \ | |
2797 | || mips_abi == ABI_EABI \ | |
2798 | || GET_MODE_CLASS (MODE) == MODE_INT))) \ | |
2799 | ? downward : upward)) | |
2800 | ||
2801 | #define FUNCTION_ARG_CALLEE_COPIES(CUM, MODE, TYPE, NAMED) \ | |
2802 | (mips_abi == ABI_EABI && (NAMED) \ | |
2803 | && FUNCTION_ARG_PASS_BY_REFERENCE (CUM, MODE, TYPE, NAMED)) | |
2804 | ||
2805 | /* Modified version of the macro in expr.h. */ | |
2806 | #define MUST_PASS_IN_STACK(MODE,TYPE) \ | |
2807 | ((TYPE) != 0 \ | |
2808 | && (TREE_CODE (TYPE_SIZE (TYPE)) != INTEGER_CST \ | |
2809 | || TREE_ADDRESSABLE (TYPE) \ | |
2810 | || ((MODE) == BLKmode \ | |
2811 | && mips_abi != ABI_32 && mips_abi != ABI_O64 \ | |
2812 | && ! ((TYPE) != 0 && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \ | |
2813 | && 0 == (int_size_in_bytes (TYPE) \ | |
2814 | % (PARM_BOUNDARY / BITS_PER_UNIT))) \ | |
2815 | && (FUNCTION_ARG_PADDING (MODE, TYPE) \ | |
2816 | == (BYTES_BIG_ENDIAN ? upward : downward))))) | |
2817 | ||
4d72536e RS |
2818 | /* True if using EABI and varargs can be passed in floating-point |
2819 | registers. Under these conditions, we need a more complex form | |
2820 | of va_list, which tracks GPR, FPR and stack arguments separately. */ | |
2821 | #define EABI_FLOAT_VARARGS_P \ | |
2822 | (mips_abi == ABI_EABI && UNITS_PER_FPVALUE >= UNITS_PER_DOUBLE) | |
2823 | ||
e75b25e7 | 2824 | \f |
cafe096b EC |
2825 | /* Say that the epilogue uses the return address register. Note that |
2826 | in the case of sibcalls, the values "used by the epilogue" are | |
2827 | considered live at the start of the called function. */ | |
2828 | #define EPILOGUE_USES(REGNO) ((REGNO) == 31) | |
2829 | ||
ac8ab9fe RS |
2830 | /* Treat LOC as a byte offset from the stack pointer and round it up |
2831 | to the next fully-aligned offset. */ | |
2832 | #define MIPS_STACK_ALIGN(LOC) \ | |
2833 | ((mips_abi == ABI_32 || mips_abi == ABI_O64 || mips_abi == ABI_EABI) \ | |
2834 | ? ((LOC) + 7) & ~7 \ | |
2835 | : ((LOC) + 15) & ~15) | |
e75b25e7 | 2836 | |
5d3f2bd5 RH |
2837 | \f |
2838 | /* Define the `__builtin_va_list' type for the ABI. */ | |
2839 | #define BUILD_VA_LIST_TYPE(VALIST) \ | |
2840 | (VALIST) = mips_build_va_list () | |
2841 | ||
2842 | /* Implement `va_start' for varargs and stdarg. */ | |
e5faf155 ZW |
2843 | #define EXPAND_BUILTIN_VA_START(valist, nextarg) \ |
2844 | mips_va_start (valist, nextarg) | |
5d3f2bd5 RH |
2845 | |
2846 | /* Implement `va_arg'. */ | |
2847 | #define EXPAND_BUILTIN_VA_ARG(valist, type) \ | |
2848 | mips_va_arg (valist, type) | |
e75b25e7 MM |
2849 | \f |
2850 | /* Output assembler code to FILE to increment profiler label # LABELNO | |
2851 | for profiling a function entry. */ | |
2852 | ||
2853 | #define FUNCTION_PROFILER(FILE, LABELNO) \ | |
2854 | { \ | |
2bcb2ab3 GK |
2855 | if (TARGET_MIPS16) \ |
2856 | sorry ("mips16 function profiling"); \ | |
e75b25e7 MM |
2857 | fprintf (FILE, "\t.set\tnoat\n"); \ |
2858 | fprintf (FILE, "\tmove\t%s,%s\t\t# save current return address\n", \ | |
2859 | reg_names[GP_REG_FIRST + 1], reg_names[GP_REG_FIRST + 31]); \ | |
a0a89ed0 CD |
2860 | if (mips_abi != ABI_N32 && mips_abi != ABI_64) \ |
2861 | { \ | |
2862 | fprintf (FILE, \ | |
2863 | "\t%s\t%s,%s,%d\t\t# _mcount pops 2 words from stack\n", \ | |
2864 | TARGET_64BIT ? "dsubu" : "subu", \ | |
2865 | reg_names[STACK_POINTER_REGNUM], \ | |
2866 | reg_names[STACK_POINTER_REGNUM], \ | |
2867 | Pmode == DImode ? 16 : 8); \ | |
2868 | } \ | |
0617ed52 | 2869 | fprintf (FILE, "\tjal\t_mcount\n"); \ |
e75b25e7 MM |
2870 | fprintf (FILE, "\t.set\tat\n"); \ |
2871 | } | |
2872 | ||
d8d5b1e1 MM |
2873 | /* Define this macro if the code for function profiling should come |
2874 | before the function prologue. Normally, the profiling code comes | |
2875 | after. */ | |
2876 | ||
2877 | /* #define PROFILE_BEFORE_PROLOGUE */ | |
2878 | ||
e75b25e7 MM |
2879 | /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, |
2880 | the stack pointer does not matter. The value is tested only in | |
2881 | functions that have frame pointers. | |
2882 | No definition is equivalent to always zero. */ | |
2883 | ||
2884 | #define EXIT_IGNORE_STACK 1 | |
2885 | ||
2886 | \f | |
2887 | /* A C statement to output, on the stream FILE, assembler code for a | |
7dac2f89 | 2888 | block of data that contains the constant parts of a trampoline. |
e75b25e7 MM |
2889 | This code should not include a label--the label is taken care of |
2890 | automatically. */ | |
2891 | ||
2892 | #define TRAMPOLINE_TEMPLATE(STREAM) \ | |
2893 | { \ | |
2894 | fprintf (STREAM, "\t.word\t0x03e00821\t\t# move $1,$31\n"); \ | |
2895 | fprintf (STREAM, "\t.word\t0x04110001\t\t# bgezal $0,.+8\n"); \ | |
2896 | fprintf (STREAM, "\t.word\t0x00000000\t\t# nop\n"); \ | |
cafe096b | 2897 | if (ptr_mode == DImode) \ |
876c09d3 JW |
2898 | { \ |
2899 | fprintf (STREAM, "\t.word\t0xdfe30014\t\t# ld $3,20($31)\n"); \ | |
2900 | fprintf (STREAM, "\t.word\t0xdfe2001c\t\t# ld $2,28($31)\n"); \ | |
2901 | } \ | |
2902 | else \ | |
2903 | { \ | |
0acefe54 JW |
2904 | fprintf (STREAM, "\t.word\t0x8fe30014\t\t# lw $3,20($31)\n"); \ |
2905 | fprintf (STREAM, "\t.word\t0x8fe20018\t\t# lw $2,24($31)\n"); \ | |
876c09d3 | 2906 | } \ |
0acefe54 | 2907 | fprintf (STREAM, "\t.word\t0x0060c821\t\t# move $25,$3 (abicalls)\n"); \ |
e75b25e7 MM |
2908 | fprintf (STREAM, "\t.word\t0x00600008\t\t# jr $3\n"); \ |
2909 | fprintf (STREAM, "\t.word\t0x0020f821\t\t# move $31,$1\n"); \ | |
cafe096b | 2910 | if (ptr_mode == DImode) \ |
876c09d3 | 2911 | { \ |
876c09d3 JW |
2912 | fprintf (STREAM, "\t.dword\t0x00000000\t\t# <function address>\n"); \ |
2913 | fprintf (STREAM, "\t.dword\t0x00000000\t\t# <static chain value>\n"); \ | |
2914 | } \ | |
2915 | else \ | |
2916 | { \ | |
2917 | fprintf (STREAM, "\t.word\t0x00000000\t\t# <function address>\n"); \ | |
2918 | fprintf (STREAM, "\t.word\t0x00000000\t\t# <static chain value>\n"); \ | |
2919 | } \ | |
e75b25e7 MM |
2920 | } |
2921 | ||
2922 | /* A C expression for the size in bytes of the trampoline, as an | |
2923 | integer. */ | |
2924 | ||
cafe096b | 2925 | #define TRAMPOLINE_SIZE (32 + GET_MODE_SIZE (ptr_mode) * 2) |
e75b25e7 | 2926 | |
876c09d3 | 2927 | /* Alignment required for trampolines, in bits. */ |
e75b25e7 | 2928 | |
cafe096b | 2929 | #define TRAMPOLINE_ALIGNMENT GET_MODE_BITSIZE (ptr_mode) |
e75b25e7 | 2930 | |
c85f7c16 JL |
2931 | /* INITIALIZE_TRAMPOLINE calls this library function to flush |
2932 | program and data caches. */ | |
2933 | ||
2934 | #ifndef CACHE_FLUSH_FUNC | |
2935 | #define CACHE_FLUSH_FUNC "_flush_cache" | |
2936 | #endif | |
2937 | ||
7dac2f89 | 2938 | /* A C statement to initialize the variable parts of a trampoline. |
e75b25e7 MM |
2939 | ADDR is an RTX for the address of the trampoline; FNADDR is an |
2940 | RTX for the address of the nested function; STATIC_CHAIN is an | |
2941 | RTX for the static chain value that should be passed to the | |
2942 | function when it is called. */ | |
2943 | ||
2944 | #define INITIALIZE_TRAMPOLINE(ADDR, FUNC, CHAIN) \ | |
2945 | { \ | |
cafe096b EC |
2946 | rtx func_addr, chain_addr; \ |
2947 | \ | |
2948 | func_addr = plus_constant (ADDR, 32); \ | |
2949 | chain_addr = plus_constant (func_addr, GET_MODE_SIZE (ptr_mode)); \ | |
2950 | emit_move_insn (gen_rtx_MEM (ptr_mode, func_addr), \ | |
2951 | gen_lowpart (ptr_mode, force_reg (Pmode, FUNC))); \ | |
2952 | emit_move_insn (gen_rtx_MEM (ptr_mode, chain_addr), \ | |
2953 | gen_lowpart (ptr_mode, force_reg (Pmode, CHAIN))); \ | |
e75b25e7 | 2954 | \ |
22b54c57 RK |
2955 | /* Flush both caches. We need to flush the data cache in case \ |
2956 | the system has a write-back cache. */ \ | |
876c09d3 | 2957 | /* ??? Should check the return value for errors. */ \ |
d490e8ad DD |
2958 | if (mips_cache_flush_func && mips_cache_flush_func[0]) \ |
2959 | emit_library_call (gen_rtx_SYMBOL_REF (Pmode, mips_cache_flush_func), \ | |
cafe096b | 2960 | 0, VOIDmode, 3, ADDR, Pmode, \ |
d490e8ad DD |
2961 | GEN_INT (TRAMPOLINE_SIZE), TYPE_MODE (integer_type_node),\ |
2962 | GEN_INT (3), TYPE_MODE (integer_type_node)); \ | |
e75b25e7 | 2963 | } |
e75b25e7 MM |
2964 | \f |
2965 | /* Addressing modes, and classification of registers for them. */ | |
2966 | ||
e75b25e7 MM |
2967 | /* These assume that REGNO is a hard or pseudo reg number. |
2968 | They give nonzero only if REGNO is a hard reg of the suitable class | |
2969 | or a pseudo reg currently allocated to a suitable hard reg. | |
2970 | These definitions are NOT overridden anywhere. */ | |
2971 | ||
2bcb2ab3 GK |
2972 | #define BASE_REG_P(regno, mode) \ |
2973 | (TARGET_MIPS16 \ | |
2974 | ? (M16_REG_P (regno) \ | |
2975 | || (regno) == FRAME_POINTER_REGNUM \ | |
2976 | || (regno) == ARG_POINTER_REGNUM \ | |
2977 | || ((regno) == STACK_POINTER_REGNUM \ | |
2978 | && (GET_MODE_SIZE (mode) == 4 \ | |
2979 | || GET_MODE_SIZE (mode) == 8))) \ | |
2980 | : GP_REG_P (regno)) | |
e75b25e7 | 2981 | |
2bcb2ab3 | 2982 | #define GP_REG_OR_PSEUDO_STRICT_P(regno, mode) \ |
c3d03e3a | 2983 | BASE_REG_P((regno < FIRST_PSEUDO_REGISTER) ? (int) regno : reg_renumber[regno], \ |
2bcb2ab3 GK |
2984 | (mode)) |
2985 | ||
2986 | #define GP_REG_OR_PSEUDO_NONSTRICT_P(regno, mode) \ | |
2987 | (((regno) >= FIRST_PSEUDO_REGISTER) || (BASE_REG_P ((regno), (mode)))) | |
e75b25e7 | 2988 | |
876c09d3 | 2989 | #define REGNO_OK_FOR_INDEX_P(regno) 0 |
2bcb2ab3 GK |
2990 | #define REGNO_MODE_OK_FOR_BASE_P(regno, mode) \ |
2991 | GP_REG_OR_PSEUDO_STRICT_P ((regno), (mode)) | |
e75b25e7 MM |
2992 | |
2993 | /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx | |
2994 | and check its validity for a certain class. | |
2995 | We have two alternate definitions for each of them. | |
2996 | The usual definition accepts all pseudo regs; the other rejects them all. | |
2997 | The symbol REG_OK_STRICT causes the latter definition to be used. | |
2998 | ||
2999 | Most source files want to accept pseudo regs in the hope that | |
3000 | they will get allocated to the class that the insn wants them to be in. | |
3001 | Some source files that are used after register allocation | |
3002 | need to be strict. */ | |
3003 | ||
3004 | #ifndef REG_OK_STRICT | |
2bcb2ab3 | 3005 | #define REG_MODE_OK_FOR_BASE_P(X, MODE) \ |
c94c9817 | 3006 | mips_reg_mode_ok_for_base_p (X, MODE, 0) |
e75b25e7 | 3007 | #else |
2bcb2ab3 | 3008 | #define REG_MODE_OK_FOR_BASE_P(X, MODE) \ |
c94c9817 | 3009 | mips_reg_mode_ok_for_base_p (X, MODE, 1) |
e75b25e7 MM |
3010 | #endif |
3011 | ||
c94c9817 MM |
3012 | #define REG_OK_FOR_INDEX_P(X) 0 |
3013 | ||
e75b25e7 MM |
3014 | \f |
3015 | /* Maximum number of registers that can appear in a valid memory address. */ | |
3016 | ||
3017 | #define MAX_REGS_PER_ADDRESS 1 | |
3018 | ||
3019 | /* A C compound statement with a conditional `goto LABEL;' executed | |
3020 | if X (an RTX) is a legitimate memory address on the target | |
fb49053f | 3021 | machine for a memory operand of mode MODE. */ |
e75b25e7 MM |
3022 | |
3023 | #if 1 | |
bd9f1972 KG |
3024 | #define GO_PRINTF(x) fprintf(stderr, (x)) |
3025 | #define GO_PRINTF2(x,y) fprintf(stderr, (x), (y)) | |
e75b25e7 MM |
3026 | #define GO_DEBUG_RTX(x) debug_rtx(x) |
3027 | ||
3028 | #else | |
3029 | #define GO_PRINTF(x) | |
3030 | #define GO_PRINTF2(x,y) | |
3031 | #define GO_DEBUG_RTX(x) | |
3032 | #endif | |
3033 | ||
c94c9817 MM |
3034 | #ifdef REG_OK_STRICT |
3035 | #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \ | |
3036 | { \ | |
3037 | if (mips_legitimate_address_p (MODE, X, 1)) \ | |
3038 | goto ADDR; \ | |
e75b25e7 | 3039 | } |
c94c9817 MM |
3040 | #else |
3041 | #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \ | |
3042 | { \ | |
3043 | if (mips_legitimate_address_p (MODE, X, 0)) \ | |
3044 | goto ADDR; \ | |
3045 | } | |
3046 | #endif | |
e75b25e7 | 3047 | |
cafe096b EC |
3048 | /* Check for constness inline but use mips_legitimate_address_p |
3049 | to check whether a constant really is an address. */ | |
3050 | ||
3051 | #define CONSTANT_ADDRESS_P(X) \ | |
3052 | (CONSTANT_P (X) && mips_legitimate_address_p (SImode, X, 0)) | |
3053 | ||
e75b25e7 MM |
3054 | |
3055 | /* Nonzero if the constant value X is a legitimate general operand. | |
3056 | It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. | |
3057 | ||
3058 | At present, GAS doesn't understand li.[sd], so don't allow it | |
3059 | to be generated at present. Also, the MIPS assembler does not | |
3060 | grok li.d Infinity. */ | |
3061 | ||
7dac2f89 | 3062 | /* ??? SGI Irix 6 assembler fails for CONST address, so reject them. |
8e466531 GRK |
3063 | Note that the Irix 6 assembler problem may already be fixed. |
3064 | Note also that the GET_CODE (X) == CONST test catches the mips16 | |
3065 | gp pseudo reg (see mips16_gp_pseudo_reg) deciding it is not | |
3066 | a LEGITIMATE_CONSTANT. If we ever want mips16 and ABI_N32 or | |
3067 | ABI_64 to work together, we'll need to fix this. */ | |
cafe096b | 3068 | #define LEGITIMATE_CONSTANT_P(X) (mips_const_insns (X) > 0) |
2649b2ee | 3069 | |
cafe096b EC |
3070 | #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) \ |
3071 | do { \ | |
3072 | if (mips_legitimize_address (&(X), MODE)) \ | |
3073 | goto WIN; \ | |
3074 | } while (0) | |
e75b25e7 MM |
3075 | |
3076 | ||
3077 | /* A C statement or compound statement with a conditional `goto | |
3078 | LABEL;' executed if memory address X (an RTX) can have different | |
3079 | meanings depending on the machine mode of the memory reference it | |
3080 | is used for. | |
3081 | ||
3082 | Autoincrement and autodecrement addresses typically have | |
3083 | mode-dependent effects because the amount of the increment or | |
3084 | decrement is the size of the operand being addressed. Some | |
3085 | machines have other mode-dependent addresses. Many RISC machines | |
3086 | have no mode-dependent addresses. | |
3087 | ||
3088 | You may assume that ADDR is a valid address for the machine. */ | |
3089 | ||
3090 | #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) {} | |
3091 | ||
9c9e7632 GK |
3092 | /* This handles the magic '..CURRENT_FUNCTION' symbol, which means |
3093 | 'the start of the function that this code is output in'. */ | |
3094 | ||
3095 | #define ASM_OUTPUT_LABELREF(FILE,NAME) \ | |
3096 | if (strcmp (NAME, "..CURRENT_FUNCTION") == 0) \ | |
3097 | asm_fprintf ((FILE), "%U%s", \ | |
3098 | XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); \ | |
3099 | else \ | |
3100 | asm_fprintf ((FILE), "%U%s", (NAME)) | |
3101 | ||
2bcb2ab3 GK |
3102 | /* The mips16 wants the constant pool to be after the function, |
3103 | because the PC relative load instructions use unsigned offsets. */ | |
3104 | ||
3105 | #define CONSTANT_POOL_BEFORE_FUNCTION (! TARGET_MIPS16) | |
3106 | ||
3107 | #define ASM_OUTPUT_POOL_EPILOGUE(FILE, FNNAME, FNDECL, SIZE) \ | |
3108 | mips_string_length = 0; | |
e75b25e7 MM |
3109 | \f |
3110 | /* Specify the machine mode that this machine uses | |
2bcb2ab3 GK |
3111 | for the index in the tablejump instruction. |
3112 | ??? Using HImode in mips16 mode can cause overflow. However, the | |
3113 | overflow is no more likely than the overflow in a branch | |
3114 | instruction. Large functions can currently break in both ways. */ | |
3115 | #define CASE_VECTOR_MODE \ | |
cafe096b | 3116 | (TARGET_MIPS16 ? HImode : ptr_mode) |
2bcb2ab3 GK |
3117 | |
3118 | /* Define as C expression which evaluates to nonzero if the tablejump | |
3119 | instruction expects the table to contain offsets from the address of the | |
3120 | table. | |
987ba558 | 3121 | Do not define this if the table should contain absolute addresses. */ |
2bcb2ab3 | 3122 | #define CASE_VECTOR_PC_RELATIVE (TARGET_MIPS16) |
e75b25e7 | 3123 | |
e75b25e7 | 3124 | /* Define this as 1 if `char' should by default be signed; else as 0. */ |
6639753e | 3125 | #ifndef DEFAULT_SIGNED_CHAR |
e75b25e7 | 3126 | #define DEFAULT_SIGNED_CHAR 1 |
6639753e | 3127 | #endif |
e75b25e7 MM |
3128 | |
3129 | /* Max number of bytes we can move from memory to memory | |
3130 | in one reasonably fast instruction. */ | |
876c09d3 JW |
3131 | #define MOVE_MAX (TARGET_64BIT ? 8 : 4) |
3132 | #define MAX_MOVE_MAX 8 | |
e75b25e7 MM |
3133 | |
3134 | /* Define this macro as a C expression which is nonzero if | |
3135 | accessing less than a word of memory (i.e. a `char' or a | |
3136 | `short') is no faster than accessing a word of memory, i.e., if | |
3137 | such access require more than one instruction or if there is no | |
3138 | difference in cost between byte and (aligned) word loads. | |
3139 | ||
3140 | On RISC machines, it tends to generate better code to define | |
3141 | this as 1, since it avoids making a QI or HI mode register. */ | |
3142 | #define SLOW_BYTE_ACCESS 1 | |
3143 | ||
d969caf8 | 3144 | /* Define this to be nonzero if shift instructions ignore all but the low-order |
987ba558 | 3145 | few bits. */ |
d969caf8 | 3146 | #define SHIFT_COUNT_TRUNCATED 1 |
e75b25e7 MM |
3147 | |
3148 | /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits | |
3149 | is done just by pretending it is already truncated. */ | |
876c09d3 JW |
3150 | #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) \ |
3151 | (TARGET_64BIT ? ((INPREC) <= 32 || (OUTPREC) > 32) : 1) | |
e75b25e7 | 3152 | |
cafe096b | 3153 | |
e75b25e7 MM |
3154 | /* Specify the machine mode that pointers have. |
3155 | After generation of rtl, the compiler makes no further distinction | |
cafe096b | 3156 | between pointers and any other objects of this machine mode. */ |
876c09d3 | 3157 | |
1eeed24e | 3158 | #ifndef Pmode |
cafe096b | 3159 | #define Pmode (TARGET_64BIT && TARGET_LONG64 ? DImode : SImode) |
1eeed24e | 3160 | #endif |
e75b25e7 | 3161 | |
cafe096b EC |
3162 | /* Give call MEMs SImode since it is the "most permissive" mode |
3163 | for both 32-bit and 64-bit targets. */ | |
e75b25e7 | 3164 | |
cafe096b | 3165 | #define FUNCTION_MODE SImode |
e75b25e7 | 3166 | |
e75b25e7 | 3167 | \f |
cafe096b | 3168 | /* The cost of loading values from the constant pool. It should be |
f1ba665b | 3169 | larger than the cost of any constant we want to synthesize in-line. */ |
cafe096b EC |
3170 | |
3171 | #define CONSTANT_POOL_COST COSTS_N_INSNS (8) | |
3172 | ||
e75b25e7 MM |
3173 | /* A C expression for the cost of moving data from a register in |
3174 | class FROM to one in class TO. The classes are expressed using | |
3175 | the enumeration values such as `GENERAL_REGS'. A value of 2 is | |
3176 | the default; other values are interpreted relative to that. | |
3177 | ||
3178 | It is not required that the cost always equal 2 when FROM is the | |
3179 | same as TO; on some machines it is expensive to move between | |
3180 | registers if they are not general registers. | |
3181 | ||
3182 | If reload sees an insn consisting of a single `set' between two | |
3183 | hard registers, and if `REGISTER_MOVE_COST' applied to their | |
3184 | classes returns a value of 2, reload does not check to ensure | |
3185 | that the constraints of the insn are met. Setting a cost of | |
3186 | other than 2 will allow reload to verify that the constraints are | |
3187 | met. You should do this if the `movM' pattern's constraints do | |
d604bca3 MH |
3188 | not allow such copying. */ |
3189 | ||
3190 | #define REGISTER_MOVE_COST(MODE, FROM, TO) \ | |
3191 | mips_register_move_cost (MODE, FROM, TO) | |
e75b25e7 | 3192 | |
516a2dfd | 3193 | /* ??? Fix this to be right for the R8000. */ |
cbd5b9a2 | 3194 | #define MEMORY_MOVE_COST(MODE,CLASS,TO_P) \ |
7dac2f89 | 3195 | (((TUNE_MIPS4000 || TUNE_MIPS6000) ? 6 : 4) \ |
cbd5b9a2 | 3196 | + memory_move_secondary_cost ((MODE), (CLASS), (TO_P))) |
876c09d3 | 3197 | |
7506f491 DE |
3198 | /* Define if copies to/from condition code registers should be avoided. |
3199 | ||
3200 | This is needed for the MIPS because reload_outcc is not complete; | |
3201 | it needs to handle cases where the source is a general or another | |
3202 | condition code register. */ | |
3203 | #define AVOID_CCMODE_COPIES | |
3204 | ||
e75b25e7 MM |
3205 | /* A C expression for the cost of a branch instruction. A value of |
3206 | 1 is the default; other values are interpreted relative to that. */ | |
3207 | ||
516a2dfd | 3208 | /* ??? Fix this to be right for the R8000. */ |
2bcb2ab3 GK |
3209 | #define BRANCH_COST \ |
3210 | ((! TARGET_MIPS16 \ | |
7dac2f89 | 3211 | && (TUNE_MIPS4000 || TUNE_MIPS6000)) \ |
2bcb2ab3 | 3212 | ? 2 : 1) |
e75b25e7 | 3213 | |
0ff83799 MM |
3214 | /* If defined, modifies the length assigned to instruction INSN as a |
3215 | function of the context in which it is used. LENGTH is an lvalue | |
3216 | that contains the initially computed length of the insn and should | |
3217 | be updated with the correct length of the insn. */ | |
3218 | #define ADJUST_INSN_LENGTH(INSN, LENGTH) \ | |
3219 | ((LENGTH) = mips_adjust_insn_length ((INSN), (LENGTH))) | |
3220 | ||
e75b25e7 MM |
3221 | \f |
3222 | /* Optionally define this if you have added predicates to | |
3223 | `MACHINE.c'. This macro is called within an initializer of an | |
3224 | array of structures. The first field in the structure is the | |
31c714e3 | 3225 | name of a predicate and the second field is an array of rtl |
e75b25e7 MM |
3226 | codes. For each predicate, list all rtl codes that can be in |
3227 | expressions matched by the predicate. The list should have a | |
3228 | trailing comma. Here is an example of two entries in the list | |
3229 | for a typical RISC machine: | |
3230 | ||
3231 | #define PREDICATE_CODES \ | |
3232 | {"gen_reg_rtx_operand", {SUBREG, REG}}, \ | |
3233 | {"reg_or_short_cint_operand", {SUBREG, REG, CONST_INT}}, | |
3234 | ||
3235 | Defining this macro does not affect the generated code (however, | |
3236 | incorrect definitions that omit an rtl code that may be matched | |
7dac2f89 | 3237 | by the predicate can cause the compiler to malfunction). |
e75b25e7 MM |
3238 | Instead, it allows the table built by `genrecog' to be more |
3239 | compact and efficient, thus speeding up the compiler. The most | |
3240 | important predicates to include in the list specified by this | |
3241 | macro are thoses used in the most insn patterns. */ | |
3242 | ||
3243 | #define PREDICATE_CODES \ | |
98c29f71 | 3244 | {"uns_arith_operand", { REG, CONST_INT, SUBREG, ADDRESSOF }}, \ |
cafe096b EC |
3245 | {"symbolic_operand", { CONST, SYMBOL_REF, LABEL_REF }}, \ |
3246 | {"const_arith_operand", { CONST, CONST_INT }}, \ | |
3247 | {"arith_operand", { REG, CONST_INT, CONST, SUBREG, ADDRESSOF }}, \ | |
3248 | {"arith32_operand", { REG, CONST_INT, SUBREG, ADDRESSOF }}, \ | |
3249 | {"reg_or_0_operand", { REG, CONST_INT, CONST_DOUBLE, SUBREG, ADDRESSOF }}, \ | |
3250 | {"true_reg_or_0_operand", { REG, CONST_INT, CONST_DOUBLE, SUBREG, ADDRESSOF }}, \ | |
e75b25e7 MM |
3251 | {"small_int", { CONST_INT }}, \ |
3252 | {"large_int", { CONST_INT }}, \ | |
e75b25e7 | 3253 | {"mips_const_double_ok", { CONST_DOUBLE }}, \ |
b8eb88d0 | 3254 | {"const_float_1_operand", { CONST_DOUBLE }}, \ |
e75b25e7 | 3255 | {"simple_memory_operand", { MEM, SUBREG }}, \ |
e75b25e7 MM |
3256 | {"equality_op", { EQ, NE }}, \ |
3257 | {"cmp_op", { EQ, NE, GT, GE, GTU, GEU, LT, LE, \ | |
3258 | LTU, LEU }}, \ | |
a0b6cdee | 3259 | {"trap_cmp_op", { EQ, NE, GE, GEU, LT, LTU }}, \ |
f8634644 | 3260 | {"pc_or_label_operand", { PC, LABEL_REF }}, \ |
cafe096b | 3261 | {"call_insn_operand", { CONST, SYMBOL_REF, LABEL_REF, REG }}, \ |
ce57d6f4 JW |
3262 | {"move_operand", { CONST_INT, CONST_DOUBLE, CONST, \ |
3263 | SYMBOL_REF, LABEL_REF, SUBREG, \ | |
cafe096b | 3264 | REG, MEM}}, \ |
2bcb2ab3 | 3265 | {"consttable_operand", { LABEL_REF, SYMBOL_REF, CONST_INT, \ |
cb923660 | 3266 | CONST_DOUBLE, CONST }}, \ |
21c9500d | 3267 | {"fcc_register_operand", { REG, SUBREG }}, \ |
d334c3c1 RS |
3268 | {"hilo_operand", { REG }}, \ |
3269 | {"extend_operator", { ZERO_EXTEND, SIGN_EXTEND }}, | |
cb923660 | 3270 | |
0e7e9155 RH |
3271 | /* A list of predicates that do special things with modes, and so |
3272 | should not elicit warnings for VOIDmode match_operand. */ | |
3273 | ||
3274 | #define SPECIAL_MODE_PREDICATES \ | |
3275 | "pc_or_label_operand", | |
e75b25e7 MM |
3276 | \f |
3277 | /* Control the assembler format that we output. */ | |
3278 | ||
e75b25e7 MM |
3279 | /* Output to assembler file text saying following lines |
3280 | may contain character constants, extra white space, comments, etc. */ | |
3281 | ||
b2bcb32d | 3282 | #ifndef ASM_APP_ON |
e75b25e7 | 3283 | #define ASM_APP_ON " #APP\n" |
b2bcb32d | 3284 | #endif |
e75b25e7 MM |
3285 | |
3286 | /* Output to assembler file text saying following lines | |
3287 | no longer contain unusual constructs. */ | |
3288 | ||
b2bcb32d | 3289 | #ifndef ASM_APP_OFF |
e75b25e7 | 3290 | #define ASM_APP_OFF " #NO_APP\n" |
b2bcb32d | 3291 | #endif |
e75b25e7 MM |
3292 | |
3293 | /* How to refer to registers in assembler output. | |
3294 | This sequence is indexed by compiler's hard-register-number (see above). | |
3295 | ||
3296 | In order to support the two different conventions for register names, | |
3297 | we use the name of a table set up in mips.c, which is overwritten | |
3298 | if -mrnames is used. */ | |
3299 | ||
3300 | #define REGISTER_NAMES \ | |
3301 | { \ | |
3302 | &mips_reg_names[ 0][0], \ | |
3303 | &mips_reg_names[ 1][0], \ | |
3304 | &mips_reg_names[ 2][0], \ | |
3305 | &mips_reg_names[ 3][0], \ | |
3306 | &mips_reg_names[ 4][0], \ | |
3307 | &mips_reg_names[ 5][0], \ | |
3308 | &mips_reg_names[ 6][0], \ | |
3309 | &mips_reg_names[ 7][0], \ | |
3310 | &mips_reg_names[ 8][0], \ | |
3311 | &mips_reg_names[ 9][0], \ | |
3312 | &mips_reg_names[10][0], \ | |
3313 | &mips_reg_names[11][0], \ | |
3314 | &mips_reg_names[12][0], \ | |
3315 | &mips_reg_names[13][0], \ | |
3316 | &mips_reg_names[14][0], \ | |
3317 | &mips_reg_names[15][0], \ | |
3318 | &mips_reg_names[16][0], \ | |
3319 | &mips_reg_names[17][0], \ | |
3320 | &mips_reg_names[18][0], \ | |
3321 | &mips_reg_names[19][0], \ | |
3322 | &mips_reg_names[20][0], \ | |
3323 | &mips_reg_names[21][0], \ | |
3324 | &mips_reg_names[22][0], \ | |
3325 | &mips_reg_names[23][0], \ | |
3326 | &mips_reg_names[24][0], \ | |
3327 | &mips_reg_names[25][0], \ | |
3328 | &mips_reg_names[26][0], \ | |
3329 | &mips_reg_names[27][0], \ | |
3330 | &mips_reg_names[28][0], \ | |
3331 | &mips_reg_names[29][0], \ | |
3332 | &mips_reg_names[30][0], \ | |
3333 | &mips_reg_names[31][0], \ | |
3334 | &mips_reg_names[32][0], \ | |
3335 | &mips_reg_names[33][0], \ | |
3336 | &mips_reg_names[34][0], \ | |
3337 | &mips_reg_names[35][0], \ | |
3338 | &mips_reg_names[36][0], \ | |
3339 | &mips_reg_names[37][0], \ | |
3340 | &mips_reg_names[38][0], \ | |
3341 | &mips_reg_names[39][0], \ | |
3342 | &mips_reg_names[40][0], \ | |
3343 | &mips_reg_names[41][0], \ | |
3344 | &mips_reg_names[42][0], \ | |
3345 | &mips_reg_names[43][0], \ | |
3346 | &mips_reg_names[44][0], \ | |
3347 | &mips_reg_names[45][0], \ | |
3348 | &mips_reg_names[46][0], \ | |
3349 | &mips_reg_names[47][0], \ | |
3350 | &mips_reg_names[48][0], \ | |
3351 | &mips_reg_names[49][0], \ | |
3352 | &mips_reg_names[50][0], \ | |
3353 | &mips_reg_names[51][0], \ | |
3354 | &mips_reg_names[52][0], \ | |
3355 | &mips_reg_names[53][0], \ | |
3356 | &mips_reg_names[54][0], \ | |
3357 | &mips_reg_names[55][0], \ | |
3358 | &mips_reg_names[56][0], \ | |
3359 | &mips_reg_names[57][0], \ | |
3360 | &mips_reg_names[58][0], \ | |
3361 | &mips_reg_names[59][0], \ | |
3362 | &mips_reg_names[60][0], \ | |
3363 | &mips_reg_names[61][0], \ | |
3364 | &mips_reg_names[62][0], \ | |
3365 | &mips_reg_names[63][0], \ | |
3366 | &mips_reg_names[64][0], \ | |
3367 | &mips_reg_names[65][0], \ | |
3368 | &mips_reg_names[66][0], \ | |
225b8835 | 3369 | &mips_reg_names[67][0], \ |
39dffea3 | 3370 | &mips_reg_names[68][0], \ |
b8eb88d0 ILT |
3371 | &mips_reg_names[69][0], \ |
3372 | &mips_reg_names[70][0], \ | |
3373 | &mips_reg_names[71][0], \ | |
3374 | &mips_reg_names[72][0], \ | |
3375 | &mips_reg_names[73][0], \ | |
3376 | &mips_reg_names[74][0], \ | |
3377 | &mips_reg_names[75][0], \ | |
d604bca3 MH |
3378 | &mips_reg_names[76][0], \ |
3379 | &mips_reg_names[77][0], \ | |
3380 | &mips_reg_names[78][0], \ | |
3381 | &mips_reg_names[79][0], \ | |
3382 | &mips_reg_names[80][0], \ | |
3383 | &mips_reg_names[81][0], \ | |
3384 | &mips_reg_names[82][0], \ | |
3385 | &mips_reg_names[83][0], \ | |
3386 | &mips_reg_names[84][0], \ | |
3387 | &mips_reg_names[85][0], \ | |
3388 | &mips_reg_names[86][0], \ | |
3389 | &mips_reg_names[87][0], \ | |
3390 | &mips_reg_names[88][0], \ | |
3391 | &mips_reg_names[89][0], \ | |
3392 | &mips_reg_names[90][0], \ | |
3393 | &mips_reg_names[91][0], \ | |
3394 | &mips_reg_names[92][0], \ | |
3395 | &mips_reg_names[93][0], \ | |
3396 | &mips_reg_names[94][0], \ | |
3397 | &mips_reg_names[95][0], \ | |
3398 | &mips_reg_names[96][0], \ | |
3399 | &mips_reg_names[97][0], \ | |
3400 | &mips_reg_names[98][0], \ | |
3401 | &mips_reg_names[99][0], \ | |
3402 | &mips_reg_names[100][0], \ | |
3403 | &mips_reg_names[101][0], \ | |
3404 | &mips_reg_names[102][0], \ | |
3405 | &mips_reg_names[103][0], \ | |
3406 | &mips_reg_names[104][0], \ | |
3407 | &mips_reg_names[105][0], \ | |
3408 | &mips_reg_names[106][0], \ | |
3409 | &mips_reg_names[107][0], \ | |
3410 | &mips_reg_names[108][0], \ | |
3411 | &mips_reg_names[109][0], \ | |
3412 | &mips_reg_names[110][0], \ | |
3413 | &mips_reg_names[111][0], \ | |
3414 | &mips_reg_names[112][0], \ | |
3415 | &mips_reg_names[113][0], \ | |
3416 | &mips_reg_names[114][0], \ | |
3417 | &mips_reg_names[115][0], \ | |
3418 | &mips_reg_names[116][0], \ | |
3419 | &mips_reg_names[117][0], \ | |
3420 | &mips_reg_names[118][0], \ | |
3421 | &mips_reg_names[119][0], \ | |
3422 | &mips_reg_names[120][0], \ | |
3423 | &mips_reg_names[121][0], \ | |
3424 | &mips_reg_names[122][0], \ | |
3425 | &mips_reg_names[123][0], \ | |
3426 | &mips_reg_names[124][0], \ | |
3427 | &mips_reg_names[125][0], \ | |
3428 | &mips_reg_names[126][0], \ | |
3429 | &mips_reg_names[127][0], \ | |
3430 | &mips_reg_names[128][0], \ | |
3431 | &mips_reg_names[129][0], \ | |
3432 | &mips_reg_names[130][0], \ | |
3433 | &mips_reg_names[131][0], \ | |
3434 | &mips_reg_names[132][0], \ | |
3435 | &mips_reg_names[133][0], \ | |
3436 | &mips_reg_names[134][0], \ | |
3437 | &mips_reg_names[135][0], \ | |
3438 | &mips_reg_names[136][0], \ | |
3439 | &mips_reg_names[137][0], \ | |
3440 | &mips_reg_names[138][0], \ | |
3441 | &mips_reg_names[139][0], \ | |
3442 | &mips_reg_names[140][0], \ | |
3443 | &mips_reg_names[141][0], \ | |
3444 | &mips_reg_names[142][0], \ | |
3445 | &mips_reg_names[143][0], \ | |
3446 | &mips_reg_names[144][0], \ | |
3447 | &mips_reg_names[145][0], \ | |
3448 | &mips_reg_names[146][0], \ | |
3449 | &mips_reg_names[147][0], \ | |
3450 | &mips_reg_names[148][0], \ | |
3451 | &mips_reg_names[149][0], \ | |
3452 | &mips_reg_names[150][0], \ | |
3453 | &mips_reg_names[151][0], \ | |
3454 | &mips_reg_names[152][0], \ | |
3455 | &mips_reg_names[153][0], \ | |
3456 | &mips_reg_names[154][0], \ | |
3457 | &mips_reg_names[155][0], \ | |
3458 | &mips_reg_names[156][0], \ | |
3459 | &mips_reg_names[157][0], \ | |
3460 | &mips_reg_names[158][0], \ | |
3461 | &mips_reg_names[159][0], \ | |
3462 | &mips_reg_names[160][0], \ | |
3463 | &mips_reg_names[161][0], \ | |
3464 | &mips_reg_names[162][0], \ | |
3465 | &mips_reg_names[163][0], \ | |
3466 | &mips_reg_names[164][0], \ | |
3467 | &mips_reg_names[165][0], \ | |
3468 | &mips_reg_names[166][0], \ | |
3469 | &mips_reg_names[167][0], \ | |
3470 | &mips_reg_names[168][0], \ | |
3471 | &mips_reg_names[169][0], \ | |
3472 | &mips_reg_names[170][0], \ | |
3473 | &mips_reg_names[171][0], \ | |
3474 | &mips_reg_names[172][0], \ | |
3475 | &mips_reg_names[173][0], \ | |
3476 | &mips_reg_names[174][0], \ | |
3477 | &mips_reg_names[175][0] \ | |
e75b25e7 MM |
3478 | } |
3479 | ||
46cca58c RS |
3480 | /* print-rtl.c can't use REGISTER_NAMES, since it depends on mips.c. |
3481 | So define this for it. */ | |
3482 | #define DEBUG_REGISTER_NAMES \ | |
3483 | { \ | |
3484 | "$0", "at", "v0", "v1", "a0", "a1", "a2", "a3", \ | |
3485 | "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", \ | |
3486 | "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7", \ | |
07e2e444 | 3487 | "t8", "t9", "k0", "k1", "gp", "sp", "$fp", "ra", \ |
46cca58c RS |
3488 | "$f0", "$f1", "$f2", "$f3", "$f4", "$f5", "$f6", "$f7", \ |
3489 | "$f8", "$f9", "$f10", "$f11", "$f12", "$f13", "$f14", "$f15", \ | |
3490 | "$f16", "$f17", "$f18", "$f19", "$f20", "$f21", "$f22", "$f23", \ | |
3491 | "$f24", "$f25", "$f26", "$f27", "$f28", "$f29", "$f30", "$f31", \ | |
d334c3c1 | 3492 | "hi", "lo", "", "$fcc0","$fcc1","$fcc2","$fcc3","$fcc4", \ |
d604bca3 MH |
3493 | "$fcc5","$fcc6","$fcc7","$rap", "", "", "", "", \ |
3494 | "$c0r0", "$c0r1", "$c0r2", "$c0r3", "$c0r4", "$c0r5", "$c0r6", "$c0r7",\ | |
3495 | "$c0r8", "$c0r9", "$c0r10","$c0r11","$c0r12","$c0r13","$c0r14","$c0r15",\ | |
3496 | "$c0r16","$c0r17","$c0r18","$c0r19","$c0r20","$c0r21","$c0r22","$c0r23",\ | |
3497 | "$c0r24","$c0r25","$c0r26","$c0r27","$c0r28","$c0r29","$c0r30","$c0r31",\ | |
3498 | "$c2r0", "$c2r1", "$c2r2", "$c2r3", "$c2r4", "$c2r5", "$c2r6", "$c2r7",\ | |
3499 | "$c2r8", "$c2r9", "$c2r10","$c2r11","$c2r12","$c2r13","$c2r14","$c2r15",\ | |
3500 | "$c2r16","$c2r17","$c2r18","$c2r19","$c2r20","$c2r21","$c2r22","$c2r23",\ | |
3501 | "$c2r24","$c2r25","$c2r26","$c2r27","$c2r28","$c2r29","$c2r30","$c2r31",\ | |
3502 | "$c3r0", "$c3r1", "$c3r2", "$c3r3", "$c3r4", "$c3r5", "$c3r6", "$c3r7",\ | |
3503 | "$c3r8", "$c3r9", "$c3r10","$c3r11","$c3r12","$c3r13","$c3r14","$c3r15",\ | |
3504 | "$c3r16","$c3r17","$c3r18","$c3r19","$c3r20","$c3r21","$c3r22","$c3r23",\ | |
3505 | "$c3r24","$c3r25","$c3r26","$c3r27","$c3r28","$c3r29","$c3r30","$c3r31"\ | |
46cca58c RS |
3506 | } |
3507 | ||
e75b25e7 MM |
3508 | /* If defined, a C initializer for an array of structures |
3509 | containing a name and a register number. This macro defines | |
3510 | additional names for hard registers, thus allowing the `asm' | |
3511 | option in declarations to refer to registers using alternate | |
3512 | names. | |
3513 | ||
3514 | We define both names for the integer registers here. */ | |
3515 | ||
3516 | #define ADDITIONAL_REGISTER_NAMES \ | |
3517 | { \ | |
3518 | { "$0", 0 + GP_REG_FIRST }, \ | |
3519 | { "$1", 1 + GP_REG_FIRST }, \ | |
3520 | { "$2", 2 + GP_REG_FIRST }, \ | |
3521 | { "$3", 3 + GP_REG_FIRST }, \ | |
3522 | { "$4", 4 + GP_REG_FIRST }, \ | |
3523 | { "$5", 5 + GP_REG_FIRST }, \ | |
3524 | { "$6", 6 + GP_REG_FIRST }, \ | |
3525 | { "$7", 7 + GP_REG_FIRST }, \ | |
3526 | { "$8", 8 + GP_REG_FIRST }, \ | |
3527 | { "$9", 9 + GP_REG_FIRST }, \ | |
3528 | { "$10", 10 + GP_REG_FIRST }, \ | |
3529 | { "$11", 11 + GP_REG_FIRST }, \ | |
3530 | { "$12", 12 + GP_REG_FIRST }, \ | |
3531 | { "$13", 13 + GP_REG_FIRST }, \ | |
3532 | { "$14", 14 + GP_REG_FIRST }, \ | |
3533 | { "$15", 15 + GP_REG_FIRST }, \ | |
3534 | { "$16", 16 + GP_REG_FIRST }, \ | |
3535 | { "$17", 17 + GP_REG_FIRST }, \ | |
3536 | { "$18", 18 + GP_REG_FIRST }, \ | |
3537 | { "$19", 19 + GP_REG_FIRST }, \ | |
3538 | { "$20", 20 + GP_REG_FIRST }, \ | |
3539 | { "$21", 21 + GP_REG_FIRST }, \ | |
3540 | { "$22", 22 + GP_REG_FIRST }, \ | |
3541 | { "$23", 23 + GP_REG_FIRST }, \ | |
3542 | { "$24", 24 + GP_REG_FIRST }, \ | |
3543 | { "$25", 25 + GP_REG_FIRST }, \ | |
3544 | { "$26", 26 + GP_REG_FIRST }, \ | |
3545 | { "$27", 27 + GP_REG_FIRST }, \ | |
3546 | { "$28", 28 + GP_REG_FIRST }, \ | |
3547 | { "$29", 29 + GP_REG_FIRST }, \ | |
3548 | { "$30", 30 + GP_REG_FIRST }, \ | |
3549 | { "$31", 31 + GP_REG_FIRST }, \ | |
3550 | { "$sp", 29 + GP_REG_FIRST }, \ | |
3551 | { "$fp", 30 + GP_REG_FIRST }, \ | |
3552 | { "at", 1 + GP_REG_FIRST }, \ | |
3553 | { "v0", 2 + GP_REG_FIRST }, \ | |
3554 | { "v1", 3 + GP_REG_FIRST }, \ | |
3555 | { "a0", 4 + GP_REG_FIRST }, \ | |
3556 | { "a1", 5 + GP_REG_FIRST }, \ | |
3557 | { "a2", 6 + GP_REG_FIRST }, \ | |
3558 | { "a3", 7 + GP_REG_FIRST }, \ | |
3559 | { "t0", 8 + GP_REG_FIRST }, \ | |
3560 | { "t1", 9 + GP_REG_FIRST }, \ | |
3561 | { "t2", 10 + GP_REG_FIRST }, \ | |
3562 | { "t3", 11 + GP_REG_FIRST }, \ | |
3563 | { "t4", 12 + GP_REG_FIRST }, \ | |
3564 | { "t5", 13 + GP_REG_FIRST }, \ | |
3565 | { "t6", 14 + GP_REG_FIRST }, \ | |
3566 | { "t7", 15 + GP_REG_FIRST }, \ | |
3567 | { "s0", 16 + GP_REG_FIRST }, \ | |
3568 | { "s1", 17 + GP_REG_FIRST }, \ | |
3569 | { "s2", 18 + GP_REG_FIRST }, \ | |
3570 | { "s3", 19 + GP_REG_FIRST }, \ | |
3571 | { "s4", 20 + GP_REG_FIRST }, \ | |
3572 | { "s5", 21 + GP_REG_FIRST }, \ | |
3573 | { "s6", 22 + GP_REG_FIRST }, \ | |
3574 | { "s7", 23 + GP_REG_FIRST }, \ | |
3575 | { "t8", 24 + GP_REG_FIRST }, \ | |
3576 | { "t9", 25 + GP_REG_FIRST }, \ | |
3577 | { "k0", 26 + GP_REG_FIRST }, \ | |
3578 | { "k1", 27 + GP_REG_FIRST }, \ | |
3579 | { "gp", 28 + GP_REG_FIRST }, \ | |
3580 | { "sp", 29 + GP_REG_FIRST }, \ | |
3581 | { "fp", 30 + GP_REG_FIRST }, \ | |
3582 | { "ra", 31 + GP_REG_FIRST }, \ | |
924706a0 | 3583 | { "$sp", 29 + GP_REG_FIRST }, \ |
b8eb88d0 | 3584 | { "$fp", 30 + GP_REG_FIRST } \ |
d604bca3 | 3585 | ALL_COP_ADDITIONAL_REGISTER_NAMES \ |
e75b25e7 MM |
3586 | } |
3587 | ||
33005162 | 3588 | /* This is meant to be redefined in the host dependent files. It is a |
d604bca3 MH |
3589 | set of alternative names and regnums for mips coprocessors. */ |
3590 | ||
3591 | #define ALL_COP_ADDITIONAL_REGISTER_NAMES | |
3592 | ||
e75b25e7 MM |
3593 | /* A C compound statement to output to stdio stream STREAM the |
3594 | assembler syntax for an instruction operand X. X is an RTL | |
3595 | expression. | |
3596 | ||
3597 | CODE is a value that can be used to specify one of several ways | |
3598 | of printing the operand. It is used when identical operands | |
3599 | must be printed differently depending on the context. CODE | |
3600 | comes from the `%' specification that was used to request | |
3601 | printing of the operand. If the specification was just `%DIGIT' | |
3602 | then CODE is 0; if the specification was `%LTR DIGIT' then CODE | |
3603 | is the ASCII code for LTR. | |
3604 | ||
3605 | If X is a register, this macro should print the register's name. | |
3606 | The names can be found in an array `reg_names' whose type is | |
3607 | `char *[]'. `reg_names' is initialized from `REGISTER_NAMES'. | |
3608 | ||
3609 | When the machine description has a specification `%PUNCT' (a `%' | |
3610 | followed by a punctuation character), this macro is called with | |
3611 | a null pointer for X and the punctuation character for CODE. | |
3612 | ||
3613 | See mips.c for the MIPS specific codes. */ | |
3614 | ||
3615 | #define PRINT_OPERAND(FILE, X, CODE) print_operand (FILE, X, CODE) | |
3616 | ||
3617 | /* A C expression which evaluates to true if CODE is a valid | |
3618 | punctuation character for use in the `PRINT_OPERAND' macro. If | |
3619 | `PRINT_OPERAND_PUNCT_VALID_P' is not defined, it means that no | |
3620 | punctuation characters (except for the standard one, `%') are | |
3621 | used in this way. */ | |
3622 | ||
3623 | #define PRINT_OPERAND_PUNCT_VALID_P(CODE) mips_print_operand_punct[CODE] | |
3624 | ||
3625 | /* A C compound statement to output to stdio stream STREAM the | |
3626 | assembler syntax for an instruction operand that is a memory | |
fb49053f | 3627 | reference whose address is ADDR. ADDR is an RTL expression. */ |
e75b25e7 MM |
3628 | |
3629 | #define PRINT_OPERAND_ADDRESS(FILE, ADDR) print_operand_address (FILE, ADDR) | |
3630 | ||
3631 | ||
3632 | /* A C statement, to be executed after all slot-filler instructions | |
3633 | have been output. If necessary, call `dbr_sequence_length' to | |
3634 | determine the number of slots filled in a sequence (zero if not | |
3635 | currently outputting a sequence), to decide how many no-ops to | |
3636 | output, or whatever. | |
3637 | ||
3638 | Don't define this macro if it has nothing to do, but it is | |
3639 | helpful in reading assembly output if the extent of the delay | |
3640 | sequence is made explicit (e.g. with white space). | |
3641 | ||
3642 | Note that output routines for instructions with delay slots must | |
3643 | be prepared to deal with not being output as part of a sequence | |
3644 | (i.e. when the scheduling pass is not run, or when no slot | |
3645 | fillers could be found.) The variable `final_sequence' is null | |
3646 | when not processing a sequence, otherwise it contains the | |
3647 | `sequence' rtx being output. */ | |
3648 | ||
3649 | #define DBR_OUTPUT_SEQEND(STREAM) \ | |
3650 | do \ | |
3651 | { \ | |
3652 | if (set_nomacro > 0 && --set_nomacro == 0) \ | |
3653 | fputs ("\t.set\tmacro\n", STREAM); \ | |
3654 | \ | |
3655 | if (set_noreorder > 0 && --set_noreorder == 0) \ | |
3656 | fputs ("\t.set\treorder\n", STREAM); \ | |
3657 | \ | |
e75b25e7 MM |
3658 | fputs ("\n", STREAM); \ |
3659 | } \ | |
3660 | while (0) | |
3661 | ||
3662 | ||
3663 | /* How to tell the debugger about changes of source files. Note, the | |
3664 | mips ECOFF format cannot deal with changes of files inside of | |
3665 | functions, which means the output of parser generators like bison | |
3666 | is generally not debuggable without using the -l switch. Lose, | |
3667 | lose, lose. Silicon graphics seems to want all .file's hardwired | |
3668 | to 1. */ | |
3669 | ||
3670 | #ifndef SET_FILE_NUMBER | |
3671 | #define SET_FILE_NUMBER() ++num_source_filenames | |
3672 | #endif | |
3673 | ||
3674 | #define ASM_OUTPUT_SOURCE_FILENAME(STREAM, NAME) \ | |
3675 | mips_output_filename (STREAM, NAME) | |
3676 | ||
ddd5a7c1 | 3677 | /* This is defined so that it can be overridden in iris6.h. */ |
516a2dfd JW |
3678 | #define ASM_OUTPUT_FILENAME(STREAM, NUM_SOURCE_FILENAMES, NAME) \ |
3679 | do \ | |
3680 | { \ | |
3681 | fprintf (STREAM, "\t.file\t%d ", NUM_SOURCE_FILENAMES); \ | |
3682 | output_quoted_string (STREAM, NAME); \ | |
3683 | fputs ("\n", STREAM); \ | |
3684 | } \ | |
3685 | while (0) | |
3686 | ||
e75b25e7 MM |
3687 | /* This is how to output a note the debugger telling it the line number |
3688 | to which the following sequence of instructions corresponds. | |
3689 | Silicon graphics puts a label after each .loc. */ | |
3690 | ||
3691 | #ifndef LABEL_AFTER_LOC | |
3692 | #define LABEL_AFTER_LOC(STREAM) | |
3693 | #endif | |
3694 | ||
b2bcb32d | 3695 | #ifndef ASM_OUTPUT_SOURCE_LINE |
a8d0467e | 3696 | #define ASM_OUTPUT_SOURCE_LINE(STREAM, LINE, COUNTER) \ |
e75b25e7 | 3697 | mips_output_lineno (STREAM, LINE) |
b2bcb32d | 3698 | #endif |
e75b25e7 | 3699 | |
9ec36da5 | 3700 | /* The MIPS implementation uses some labels for its own purpose. The |
e75b25e7 MM |
3701 | following lists what labels are created, and are all formed by the |
3702 | pattern $L[a-z].*. The machine independent portion of GCC creates | |
3703 | labels matching: $L[A-Z][0-9]+ and $L[0-9]+. | |
3704 | ||
c5b7917e | 3705 | LM[0-9]+ Silicon Graphics/ECOFF stabs label before each stmt. |
e75b25e7 MM |
3706 | $Lb[0-9]+ Begin blocks for MIPS debug support |
3707 | $Lc[0-9]+ Label for use in s<xx> operation. | |
33005162 | 3708 | $Le[0-9]+ End blocks for MIPS debug support */ |
e75b25e7 | 3709 | |
31c714e3 MM |
3710 | /* A C statement (sans semicolon) to output to the stdio stream |
3711 | STREAM any text necessary for declaring the name NAME of an | |
3712 | initialized variable which is being defined. This macro must | |
7dac2f89 | 3713 | output the label definition (perhaps using `ASM_OUTPUT_LABEL'). |
31c714e3 MM |
3714 | The argument DECL is the `VAR_DECL' tree node representing the |
3715 | variable. | |
3716 | ||
3717 | If this macro is not defined, then the variable name is defined | |
3718 | in the usual manner as a label (by means of `ASM_OUTPUT_LABEL'). */ | |
3719 | ||
44404b8b | 3720 | #undef ASM_DECLARE_OBJECT_NAME |
31c714e3 | 3721 | #define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL) \ |
f3b39eba MM |
3722 | do \ |
3723 | { \ | |
3724 | mips_declare_object (STREAM, NAME, "", ":\n", 0); \ | |
f3b39eba MM |
3725 | } \ |
3726 | while (0) | |
31c714e3 | 3727 | |
506a61b1 KG |
3728 | /* Globalizing directive for a label. */ |
3729 | #define GLOBAL_ASM_OP "\t.globl\t" | |
e75b25e7 | 3730 | |
31c714e3 | 3731 | /* This says how to define a global common symbol. */ |
e75b25e7 | 3732 | |
919509ce DN |
3733 | #define ASM_OUTPUT_ALIGNED_DECL_COMMON(STREAM, DECL, NAME, SIZE, ALIGN) \ |
3734 | do { \ | |
3735 | /* If the target wants uninitialized const declarations in \ | |
3736 | .rdata then don't put them in .comm */ \ | |
3737 | if (TARGET_EMBEDDED_DATA && TARGET_UNINIT_CONST_IN_RODATA \ | |
3738 | && TREE_CODE (DECL) == VAR_DECL && TREE_READONLY (DECL) \ | |
3739 | && (DECL_INITIAL (DECL) == 0 \ | |
3740 | || DECL_INITIAL (DECL) == error_mark_node)) \ | |
3741 | { \ | |
3742 | if (TREE_PUBLIC (DECL) && DECL_NAME (DECL)) \ | |
5eb99654 | 3743 | (*targetm.asm_out.globalize_label) (STREAM, NAME); \ |
919509ce | 3744 | \ |
d48bc59a | 3745 | readonly_data_section (); \ |
919509ce DN |
3746 | ASM_OUTPUT_ALIGN (STREAM, floor_log2 (ALIGN / BITS_PER_UNIT)); \ |
3747 | mips_declare_object (STREAM, NAME, "", ":\n\t.space\t%u\n", \ | |
3748 | (SIZE)); \ | |
3749 | } \ | |
3750 | else \ | |
d239cdc0 | 3751 | mips_declare_object (STREAM, NAME, "\n\t.comm\t", ",%u\n", \ |
919509ce DN |
3752 | (SIZE)); \ |
3753 | } while (0) | |
3754 | ||
e75b25e7 | 3755 | |
c5b7917e | 3756 | /* This says how to define a local common symbol (ie, not visible to |
31c714e3 | 3757 | linker). */ |
e75b25e7 MM |
3758 | |
3759 | #define ASM_OUTPUT_LOCAL(STREAM, NAME, SIZE, ROUNDED) \ | |
58e15542 | 3760 | mips_declare_object (STREAM, NAME, "\n\t.lcomm\t", ",%u\n", (int)(SIZE)) |
e75b25e7 MM |
3761 | |
3762 | ||
3763 | /* This says how to output an external. It would be possible not to | |
3764 | output anything and let undefined symbol become external. However | |
3765 | the assembler uses length information on externals to allocate in | |
3766 | data/sdata bss/sbss, thereby saving exec time. */ | |
3767 | ||
3768 | #define ASM_OUTPUT_EXTERNAL(STREAM,DECL,NAME) \ | |
3769 | mips_output_external(STREAM,DECL,NAME) | |
3770 | ||
f99ffb60 | 3771 | |
e75b25e7 MM |
3772 | /* This is how to declare a function name. The actual work of |
3773 | emitting the label is moved to function_prologue, so that we can | |
3774 | get the line number correctly emitted before the .ent directive, | |
789b7de5 | 3775 | and after any .file directives. Define as empty so that the function |
4e314d1f EC |
3776 | is not declared before the .ent directive elsewhere. */ |
3777 | ||
44404b8b | 3778 | #undef ASM_DECLARE_FUNCTION_NAME |
33005162 | 3779 | #define ASM_DECLARE_FUNCTION_NAME(STREAM,NAME,DECL) |
4e314d1f | 3780 | |
e75b25e7 MM |
3781 | /* This is how to store into the string LABEL |
3782 | the symbol_ref name of an internal numbered label where | |
3783 | PREFIX is the class of label and NUM is the number within the class. | |
3784 | This is suitable for output with `assemble_name'. */ | |
3785 | ||
44404b8b | 3786 | #undef ASM_GENERATE_INTERNAL_LABEL |
e75b25e7 | 3787 | #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \ |
4f70758f | 3788 | sprintf ((LABEL), "*%s%s%ld", (LOCAL_LABEL_PREFIX), (PREFIX), (long)(NUM)) |
e75b25e7 | 3789 | |
e75b25e7 MM |
3790 | /* This is how to output an element of a case-vector that is absolute. */ |
3791 | ||
3792 | #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \ | |
6ae1498b | 3793 | fprintf (STREAM, "\t%s\t%sL%d\n", \ |
cafe096b | 3794 | ptr_mode == DImode ? ".dword" : ".word", \ |
6ae1498b | 3795 | LOCAL_LABEL_PREFIX, \ |
876c09d3 | 3796 | VALUE) |
e75b25e7 MM |
3797 | |
3798 | /* This is how to output an element of a case-vector that is relative. | |
e0bfcea5 ILT |
3799 | This is used for pc-relative code (e.g. when TARGET_ABICALLS or |
3800 | TARGET_EMBEDDED_PIC). */ | |
e75b25e7 | 3801 | |
33f7f353 | 3802 | #define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL) \ |
e0bfcea5 | 3803 | do { \ |
2bcb2ab3 GK |
3804 | if (TARGET_MIPS16) \ |
3805 | fprintf (STREAM, "\t.half\t%sL%d-%sL%d\n", \ | |
3806 | LOCAL_LABEL_PREFIX, VALUE, LOCAL_LABEL_PREFIX, REL); \ | |
3807 | else if (TARGET_EMBEDDED_PIC) \ | |
6ae1498b | 3808 | fprintf (STREAM, "\t%s\t%sL%d-%sLS%d\n", \ |
cafe096b | 3809 | ptr_mode == DImode ? ".dword" : ".word", \ |
6ae1498b | 3810 | LOCAL_LABEL_PREFIX, VALUE, LOCAL_LABEL_PREFIX, REL); \ |
cafe096b | 3811 | else if (TARGET_GPWORD) \ |
6ae1498b | 3812 | fprintf (STREAM, "\t%s\t%sL%d\n", \ |
cafe096b | 3813 | ptr_mode == DImode ? ".gpdword" : ".gpword", \ |
6ae1498b | 3814 | LOCAL_LABEL_PREFIX, VALUE); \ |
516a2dfd | 3815 | else \ |
b2d8cf33 | 3816 | fprintf (STREAM, "\t%s\t%sL%d\n", \ |
cafe096b | 3817 | ptr_mode == DImode ? ".dword" : ".word", \ |
b2d8cf33 | 3818 | LOCAL_LABEL_PREFIX, VALUE); \ |
e0bfcea5 ILT |
3819 | } while (0) |
3820 | ||
2bcb2ab3 GK |
3821 | /* When generating embedded PIC or mips16 code we want to put the jump |
3822 | table in the .text section. In all other cases, we want to put the | |
3823 | jump table in the .rdata section. Unfortunately, we can't use | |
e0bfcea5 ILT |
3824 | JUMP_TABLES_IN_TEXT_SECTION, because it is not conditional. |
3825 | Instead, we use ASM_OUTPUT_CASE_LABEL to switch back to the .text | |
3826 | section if appropriate. */ | |
44404b8b | 3827 | #undef ASM_OUTPUT_CASE_LABEL |
e0bfcea5 ILT |
3828 | #define ASM_OUTPUT_CASE_LABEL(FILE, PREFIX, NUM, INSN) \ |
3829 | do { \ | |
2bcb2ab3 GK |
3830 | if (TARGET_EMBEDDED_PIC || TARGET_MIPS16) \ |
3831 | function_section (current_function_decl); \ | |
4977bab6 | 3832 | (*targetm.asm_out.internal_label) (FILE, PREFIX, NUM); \ |
e0bfcea5 | 3833 | } while (0) |
e75b25e7 MM |
3834 | |
3835 | /* This is how to output an assembler line | |
3836 | that says to advance the location counter | |
3837 | to a multiple of 2**LOG bytes. */ | |
3838 | ||
3839 | #define ASM_OUTPUT_ALIGN(STREAM,LOG) \ | |
a688e0b7 | 3840 | fprintf (STREAM, "\t.align\t%d\n", (LOG)) |
e75b25e7 | 3841 | |
38e01259 | 3842 | /* This is how to output an assembler line to advance the location |
e75b25e7 MM |
3843 | counter by SIZE bytes. */ |
3844 | ||
44404b8b | 3845 | #undef ASM_OUTPUT_SKIP |
e75b25e7 | 3846 | #define ASM_OUTPUT_SKIP(STREAM,SIZE) \ |
c394cdb7 | 3847 | fprintf (STREAM, "\t.space\t"HOST_WIDE_INT_PRINT_UNSIGNED"\n", (SIZE)) |
e75b25e7 | 3848 | |
e75b25e7 | 3849 | /* This is how to output a string. */ |
44404b8b | 3850 | #undef ASM_OUTPUT_ASCII |
e75b25e7 | 3851 | #define ASM_OUTPUT_ASCII(STREAM, STRING, LEN) \ |
b3276c7a | 3852 | mips_output_ascii (STREAM, STRING, LEN) |
e75b25e7 | 3853 | |
e75b25e7 | 3854 | /* Output #ident as a in the read-only data section. */ |
0e5a4ad8 | 3855 | #undef ASM_OUTPUT_IDENT |
e75b25e7 MM |
3856 | #define ASM_OUTPUT_IDENT(FILE, STRING) \ |
3857 | { \ | |
3cce094d | 3858 | const char *p = STRING; \ |
e75b25e7 | 3859 | int size = strlen (p) + 1; \ |
d48bc59a | 3860 | readonly_data_section (); \ |
e75b25e7 MM |
3861 | assemble_string (p, size); \ |
3862 | } | |
3863 | \f | |
b82b0773 MM |
3864 | /* Default to -G 8 */ |
3865 | #ifndef MIPS_DEFAULT_GVALUE | |
3866 | #define MIPS_DEFAULT_GVALUE 8 | |
3867 | #endif | |
e75b25e7 | 3868 | |
f3b39eba MM |
3869 | /* Define the strings to put out for each section in the object file. */ |
3870 | #define TEXT_SECTION_ASM_OP "\t.text" /* instructions */ | |
3871 | #define DATA_SECTION_ASM_OP "\t.data" /* large data */ | |
3872 | #define SDATA_SECTION_ASM_OP "\t.sdata" /* small data */ | |
2017ed61 EC |
3873 | |
3874 | #undef READONLY_DATA_SECTION_ASM_OP | |
d48bc59a | 3875 | #define READONLY_DATA_SECTION_ASM_OP "\t.rdata" /* read-only data */ |
2017ed61 | 3876 | |
3cf6400d | 3877 | #define SMALL_DATA_SECTION sdata_section |
e75b25e7 MM |
3878 | |
3879 | /* What other sections we support other than the normal .data/.text. */ | |
3880 | ||
44404b8b | 3881 | #undef EXTRA_SECTIONS |
d48bc59a | 3882 | #define EXTRA_SECTIONS in_sdata |
e75b25e7 MM |
3883 | |
3884 | /* Define the additional functions to select our additional sections. */ | |
3885 | ||
3886 | /* on the MIPS it is not a good idea to put constants in the text | |
3887 | section, since this defeats the sdata/data mechanism. This is | |
3888 | especially true when -O is used. In this case an effort is made to | |
3889 | address with faster (gp) register relative addressing, which can | |
3890 | only get at sdata and sbss items (there is no stext !!) However, | |
3891 | if the constant is too large for sdata, and it's readonly, it | |
987ba558 | 3892 | will go into the .rdata section. */ |
e75b25e7 | 3893 | |
44404b8b | 3894 | #undef EXTRA_SECTION_FUNCTIONS |
e75b25e7 MM |
3895 | #define EXTRA_SECTION_FUNCTIONS \ |
3896 | void \ | |
3897 | sdata_section () \ | |
3898 | { \ | |
3899 | if (in_section != in_sdata) \ | |
3900 | { \ | |
3901 | fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP); \ | |
3902 | in_section = in_sdata; \ | |
3903 | } \ | |
e75b25e7 MM |
3904 | } |
3905 | ||
3906 | /* Given a decl node or constant node, choose the section to output it in | |
3907 | and select that section. */ | |
3908 | ||
ae46c4e0 RH |
3909 | #undef TARGET_ASM_SELECT_SECTION |
3910 | #define TARGET_ASM_SELECT_SECTION mips_select_section | |
e75b25e7 | 3911 | \f |
e75b25e7 MM |
3912 | #define ASM_OUTPUT_REG_PUSH(STREAM,REGNO) \ |
3913 | do \ | |
3914 | { \ | |
876c09d3 JW |
3915 | fprintf (STREAM, "\t%s\t%s,%s,8\n\t%s\t%s,0(%s)\n", \ |
3916 | TARGET_64BIT ? "dsubu" : "subu", \ | |
e75b25e7 MM |
3917 | reg_names[STACK_POINTER_REGNUM], \ |
3918 | reg_names[STACK_POINTER_REGNUM], \ | |
876c09d3 | 3919 | TARGET_64BIT ? "sd" : "sw", \ |
e75b25e7 MM |
3920 | reg_names[REGNO], \ |
3921 | reg_names[STACK_POINTER_REGNUM]); \ | |
3922 | } \ | |
3923 | while (0) | |
3924 | ||
3925 | #define ASM_OUTPUT_REG_POP(STREAM,REGNO) \ | |
3926 | do \ | |
3927 | { \ | |
3928 | if (! set_noreorder) \ | |
3929 | fprintf (STREAM, "\t.set\tnoreorder\n"); \ | |
3930 | \ | |
876c09d3 JW |
3931 | fprintf (STREAM, "\t%s\t%s,0(%s)\n\t%s\t%s,%s,8\n", \ |
3932 | TARGET_64BIT ? "ld" : "lw", \ | |
e75b25e7 MM |
3933 | reg_names[REGNO], \ |
3934 | reg_names[STACK_POINTER_REGNUM], \ | |
876c09d3 | 3935 | TARGET_64BIT ? "daddu" : "addu", \ |
e75b25e7 MM |
3936 | reg_names[STACK_POINTER_REGNUM], \ |
3937 | reg_names[STACK_POINTER_REGNUM]); \ | |
3938 | \ | |
3939 | if (! set_noreorder) \ | |
3940 | fprintf (STREAM, "\t.set\treorder\n"); \ | |
3941 | } \ | |
3942 | while (0) | |
3943 | ||
4baed42f DE |
3944 | /* How to start an assembler comment. |
3945 | The leading space is important (the mips native assembler requires it). */ | |
e75b25e7 | 3946 | #ifndef ASM_COMMENT_START |
4baed42f | 3947 | #define ASM_COMMENT_START " #" |
e75b25e7 | 3948 | #endif |
e75b25e7 MM |
3949 | \f |
3950 | ||
3951 | /* Macros for mips-tfile.c to encapsulate stabs in ECOFF, and for | |
3952 | and mips-tdump.c to print them out. | |
3953 | ||
3954 | These must match the corresponding definitions in gdb/mipsread.c. | |
987ba558 | 3955 | Unfortunately, gcc and gdb do not currently share any directories. */ |
e75b25e7 MM |
3956 | |
3957 | #define CODE_MASK 0x8F300 | |
3958 | #define MIPS_IS_STAB(sym) (((sym)->index & 0xFFF00) == CODE_MASK) | |
3959 | #define MIPS_MARK_STAB(code) ((code)+CODE_MASK) | |
3960 | #define MIPS_UNMARK_STAB(code) ((code)-CODE_MASK) | |
3f1f8d8c MM |
3961 | |
3962 | \f | |
48b80d93 AO |
3963 | /* Default definitions for size_t and ptrdiff_t. We must override the |
3964 | definitions from ../svr4.h on mips-*-linux-gnu. */ | |
3f1f8d8c | 3965 | |
cafe096b EC |
3966 | #ifndef SIZE_TYPE |
3967 | #define SIZE_TYPE (POINTER_SIZE == 64 ? "long unsigned int" : "unsigned int") | |
3968 | #endif | |
3f1f8d8c | 3969 | |
cafe096b EC |
3970 | #ifndef PTRDIFF_TYPE |
3971 | #define PTRDIFF_TYPE (POINTER_SIZE == 64 ? "long int" : "int") | |
3972 | #endif | |
28174a14 MS |
3973 | |
3974 | /* See mips_expand_prologue's use of loadgp for when this should be | |
3975 | true. */ | |
3976 | ||
a53f72db GRK |
3977 | #define DONT_ACCESS_GBLS_AFTER_EPILOGUE (TARGET_ABICALLS \ |
3978 | && mips_abi != ABI_32 \ | |
3979 | && mips_abi != ABI_O64) | |
2bcb2ab3 | 3980 | \f |
2bcb2ab3 GK |
3981 | /* We need to use a special set of functions to handle hard floating |
3982 | point code in mips16 mode. */ | |
337e2b69 ILT |
3983 | |
3984 | #ifndef INIT_SUBTARGET_OPTABS | |
3985 | #define INIT_SUBTARGET_OPTABS | |
3986 | #endif | |
3987 | ||
3988 | #define INIT_TARGET_OPTABS \ | |
3989 | do \ | |
3990 | { \ | |
2bcb2ab3 GK |
3991 | if (! TARGET_MIPS16 || ! mips16_hard_float) \ |
3992 | INIT_SUBTARGET_OPTABS; \ | |
3993 | else \ | |
3994 | { \ | |
3995 | add_optab->handlers[(int) SFmode].libfunc = \ | |
e85cde9a | 3996 | init_one_libfunc ("__mips16_addsf3"); \ |
2bcb2ab3 | 3997 | sub_optab->handlers[(int) SFmode].libfunc = \ |
e85cde9a | 3998 | init_one_libfunc ("__mips16_subsf3"); \ |
2bcb2ab3 | 3999 | smul_optab->handlers[(int) SFmode].libfunc = \ |
e85cde9a | 4000 | init_one_libfunc ("__mips16_mulsf3"); \ |
ef89d648 | 4001 | sdiv_optab->handlers[(int) SFmode].libfunc = \ |
e85cde9a | 4002 | init_one_libfunc ("__mips16_divsf3"); \ |
2bcb2ab3 | 4003 | \ |
e85cde9a JL |
4004 | eqsf2_libfunc = init_one_libfunc ("__mips16_eqsf2"); \ |
4005 | nesf2_libfunc = init_one_libfunc ("__mips16_nesf2"); \ | |
4006 | gtsf2_libfunc = init_one_libfunc ("__mips16_gtsf2"); \ | |
4007 | gesf2_libfunc = init_one_libfunc ("__mips16_gesf2"); \ | |
4008 | ltsf2_libfunc = init_one_libfunc ("__mips16_ltsf2"); \ | |
4009 | lesf2_libfunc = init_one_libfunc ("__mips16_lesf2"); \ | |
2bcb2ab3 GK |
4010 | \ |
4011 | floatsisf_libfunc = \ | |
e85cde9a | 4012 | init_one_libfunc ("__mips16_floatsisf"); \ |
2bcb2ab3 | 4013 | fixsfsi_libfunc = \ |
e85cde9a | 4014 | init_one_libfunc ("__mips16_fixsfsi"); \ |
2bcb2ab3 GK |
4015 | \ |
4016 | if (TARGET_DOUBLE_FLOAT) \ | |
4017 | { \ | |
4018 | add_optab->handlers[(int) DFmode].libfunc = \ | |
e85cde9a | 4019 | init_one_libfunc ("__mips16_adddf3"); \ |
2bcb2ab3 | 4020 | sub_optab->handlers[(int) DFmode].libfunc = \ |
e85cde9a | 4021 | init_one_libfunc ("__mips16_subdf3"); \ |
2bcb2ab3 | 4022 | smul_optab->handlers[(int) DFmode].libfunc = \ |
e85cde9a | 4023 | init_one_libfunc ("__mips16_muldf3"); \ |
ef89d648 | 4024 | sdiv_optab->handlers[(int) DFmode].libfunc = \ |
e85cde9a | 4025 | init_one_libfunc ("__mips16_divdf3"); \ |
2bcb2ab3 GK |
4026 | \ |
4027 | extendsfdf2_libfunc = \ | |
e85cde9a | 4028 | init_one_libfunc ("__mips16_extendsfdf2"); \ |
2bcb2ab3 | 4029 | truncdfsf2_libfunc = \ |
e85cde9a | 4030 | init_one_libfunc ("__mips16_truncdfsf2"); \ |
2bcb2ab3 GK |
4031 | \ |
4032 | eqdf2_libfunc = \ | |
e85cde9a | 4033 | init_one_libfunc ("__mips16_eqdf2"); \ |
2bcb2ab3 | 4034 | nedf2_libfunc = \ |
e85cde9a | 4035 | init_one_libfunc ("__mips16_nedf2"); \ |
2bcb2ab3 | 4036 | gtdf2_libfunc = \ |
e85cde9a | 4037 | init_one_libfunc ("__mips16_gtdf2"); \ |
2bcb2ab3 | 4038 | gedf2_libfunc = \ |
e85cde9a | 4039 | init_one_libfunc ("__mips16_gedf2"); \ |
2bcb2ab3 | 4040 | ltdf2_libfunc = \ |
e85cde9a | 4041 | init_one_libfunc ("__mips16_ltdf2"); \ |
2bcb2ab3 | 4042 | ledf2_libfunc = \ |
e85cde9a | 4043 | init_one_libfunc ("__mips16_ledf2"); \ |
2bcb2ab3 GK |
4044 | \ |
4045 | floatsidf_libfunc = \ | |
e85cde9a | 4046 | init_one_libfunc ("__mips16_floatsidf"); \ |
2bcb2ab3 | 4047 | fixdfsi_libfunc = \ |
e85cde9a | 4048 | init_one_libfunc ("__mips16_fixdfsi"); \ |
2bcb2ab3 GK |
4049 | } \ |
4050 | } \ | |
337e2b69 ILT |
4051 | } \ |
4052 | while (0) | |
e0c13c70 L |
4053 | |
4054 | #define DFMODE_NAN \ | |
4055 | unsigned short DFbignan[4] = {0x7ff7, 0xffff, 0xffff, 0xffff}; \ | |
4056 | unsigned short DFlittlenan[4] = {0xffff, 0xffff, 0xffff, 0xfff7} | |
4057 | #define SFMODE_NAN \ | |
4058 | unsigned short SFbignan[2] = {0x7fbf, 0xffff}; \ | |
4059 | unsigned short SFlittlenan[2] = {0xffff, 0xffbf} | |
6d439235 EC |
4060 | |
4061 | /* Generate calls to memcpy, etc., not bcopy, etc. */ | |
2017ed61 | 4062 | #define TARGET_MEM_FUNCTIONS |
3c0121e4 | 4063 | |
28727f1f | 4064 | #ifndef __mips16 |
3c0121e4 AO |
4065 | /* Since the bits of the _init and _fini function is spread across |
4066 | many object files, each potentially with its own GP, we must assume | |
4067 | we need to load our GP. We don't preserve $gp or $ra, since each | |
4068 | init/fini chunk is supposed to initialize $gp, and crti/crtn | |
4069 | already take care of preserving $ra and, when appropriate, $gp. */ | |
4070 | #if _MIPS_SIM == _MIPS_SIM_ABI32 | |
4071 | #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \ | |
4072 | asm (SECTION_OP "\n\ | |
4073 | .set noreorder\n\ | |
4074 | bal 1f\n\ | |
4075 | nop\n\ | |
4076 | 1: .cpload $31\n\ | |
4077 | .set reorder\n\ | |
4078 | jal " USER_LABEL_PREFIX #FUNC "\n\ | |
4079 | " TEXT_SECTION_ASM_OP); | |
e1551d47 AO |
4080 | #endif /* Switch to #elif when we're no longer limited by K&R C. */ |
4081 | #if (defined _ABIN32 && _MIPS_SIM == _ABIN32) \ | |
3c0121e4 AO |
4082 | || (defined _ABI64 && _MIPS_SIM == _ABI64) |
4083 | #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \ | |
4084 | asm (SECTION_OP "\n\ | |
4085 | .set noreorder\n\ | |
4086 | bal 1f\n\ | |
4087 | nop\n\ | |
4088 | 1: .set reorder\n\ | |
4089 | .cpsetup $31, $2, 1b\n\ | |
4090 | jal " USER_LABEL_PREFIX #FUNC "\n\ | |
4091 | " TEXT_SECTION_ASM_OP); | |
4092 | #endif | |
28727f1f | 4093 | #endif |