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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 |
cf011243 | 3 | 1999, 2000, 2001 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 MM |
29 | extern char *asm_file_name; |
30 | extern char call_used_regs[]; | |
0fb5ac6f | 31 | extern int may_call_alloca; |
0fb5ac6f MM |
32 | extern char **save_argv; |
33 | extern int target_flags; | |
e75b25e7 MM |
34 | |
35 | /* MIPS external variables defined in mips.c. */ | |
36 | ||
37 | /* comparison type */ | |
38 | enum cmp_type { | |
876c09d3 JW |
39 | CMP_SI, /* compare four byte integers */ |
40 | CMP_DI, /* compare eight byte integers */ | |
e75b25e7 MM |
41 | CMP_SF, /* compare single precision floats */ |
42 | CMP_DF, /* compare double precision floats */ | |
43 | CMP_MAX /* max comparison type */ | |
44 | }; | |
45 | ||
46 | /* types of delay slot */ | |
47 | enum delay_type { | |
48 | DELAY_NONE, /* no delay slot */ | |
49 | DELAY_LOAD, /* load from memory delay */ | |
34b650b3 MM |
50 | DELAY_HILO, /* move from/to hi/lo registers */ |
51 | DELAY_FCMP /* delay after doing c.<xx>.{d,s} */ | |
e75b25e7 MM |
52 | }; |
53 | ||
54 | /* Which processor to schedule for. Since there is no difference between | |
55 | a R2000 and R3000 in terms of the scheduler, we collapse them into | |
4a392643 RS |
56 | just an R3000. The elements of the enumeration must match exactly |
57 | the cpu attribute in the mips.md machine description. */ | |
e75b25e7 MM |
58 | |
59 | enum processor_type { | |
60 | PROCESSOR_DEFAULT, | |
61 | PROCESSOR_R3000, | |
e9a25f70 | 62 | PROCESSOR_R3900, |
e75b25e7 | 63 | PROCESSOR_R6000, |
876c09d3 | 64 | PROCESSOR_R4000, |
00b3e052 JW |
65 | PROCESSOR_R4100, |
66 | PROCESSOR_R4300, | |
516a2dfd | 67 | PROCESSOR_R4600, |
053665d7 | 68 | PROCESSOR_R4650, |
b8eb88d0 | 69 | PROCESSOR_R5000, |
516a2dfd | 70 | PROCESSOR_R8000 |
e75b25e7 MM |
71 | }; |
72 | ||
4a392643 | 73 | /* Recast the cpu class to be the cpu attribute. */ |
919b1aec | 74 | #define mips_cpu_attr ((enum attr_cpu)mips_tune) |
4a392643 | 75 | |
04bd620d | 76 | /* Which ABI to use. These are constants because abi64.h must check their |
a53f72db GRK |
77 | value at preprocessing time. |
78 | ||
79 | ABI_32 (original 32, or o32), ABI_N32 (n32), ABI_64 (n64) are all | |
80 | defined by SGI. ABI_O64 is o32 extended to work on a 64 bit machine. */ | |
b2d8cf33 | 81 | |
04bd620d JW |
82 | #define ABI_32 0 |
83 | #define ABI_N32 1 | |
84 | #define ABI_64 2 | |
85 | #define ABI_EABI 3 | |
a53f72db | 86 | #define ABI_O64 4 |
b2d8cf33 JW |
87 | |
88 | #ifndef MIPS_ABI_DEFAULT | |
89 | /* We define this away so that there is no extra runtime cost if the target | |
90 | doesn't support multiple ABIs. */ | |
91 | #define mips_abi ABI_32 | |
92 | #else | |
04bd620d | 93 | extern int mips_abi; |
b2d8cf33 JW |
94 | #endif |
95 | ||
45ceb85d RS |
96 | /* Whether to emit abicalls code sequences or not. */ |
97 | ||
98 | enum mips_abicalls_type { | |
99 | MIPS_ABICALLS_NO, | |
100 | MIPS_ABICALLS_YES | |
101 | }; | |
102 | ||
103 | /* Recast the abicalls class to be the abicalls attribute. */ | |
104 | #define mips_abicalls_attr ((enum attr_abicalls)mips_abicalls) | |
105 | ||
b7d3fabe RS |
106 | /* Which type of block move to do (whether or not the last store is |
107 | split out so it can fill a branch delay slot). */ | |
108 | ||
109 | enum block_move_type { | |
110 | BLOCK_MOVE_NORMAL, /* generate complete block move */ | |
111 | BLOCK_MOVE_NOT_LAST, /* generate all but last store */ | |
112 | BLOCK_MOVE_LAST /* generate just the last store */ | |
113 | }; | |
114 | ||
e75b25e7 MM |
115 | extern char mips_reg_names[][8]; /* register names (a0 vs. $4). */ |
116 | extern char mips_print_operand_punct[]; /* print_operand punctuation chars */ | |
e2fe6aba | 117 | extern const char *current_function_file; /* filename current function is in */ |
e75b25e7 MM |
118 | extern int num_source_filenames; /* current .file # */ |
119 | extern int inside_function; /* != 0 if inside of a function */ | |
120 | extern int ignore_line_number; /* != 0 if we are to ignore next .loc */ | |
121 | extern int file_in_function_warning; /* warning given about .file in func */ | |
122 | extern int sdb_label_count; /* block start/end next label # */ | |
a642a781 | 123 | extern int sdb_begin_function_line; /* Starting Line of current function */ |
e75b25e7 MM |
124 | extern int mips_section_threshold; /* # bytes of data/sdata cutoff */ |
125 | extern int g_switch_value; /* value of the -G xx switch */ | |
126 | extern int g_switch_set; /* whether -G xx was passed. */ | |
127 | extern int sym_lineno; /* sgi next label # for each stmt */ | |
128 | extern int set_noreorder; /* # of nested .set noreorder's */ | |
129 | extern int set_nomacro; /* # of nested .set nomacro's */ | |
130 | extern int set_noat; /* # of nested .set noat's */ | |
131 | extern int set_volatile; /* # of nested .set volatile's */ | |
e75b25e7 MM |
132 | extern int mips_branch_likely; /* emit 'l' after br (branch likely) */ |
133 | extern int mips_dbx_regno[]; /* Map register # to debug register # */ | |
e75b25e7 MM |
134 | extern struct rtx_def *branch_cmp[2]; /* operands for compare */ |
135 | extern enum cmp_type branch_type; /* what type of branch to use */ | |
7dac2f89 EC |
136 | extern enum processor_type mips_arch; /* which cpu to codegen for */ |
137 | extern enum processor_type mips_tune; /* which cpu to schedule for */ | |
45ceb85d | 138 | extern enum mips_abicalls_type mips_abicalls;/* for svr4 abi pic calls */ |
e75b25e7 | 139 | extern int mips_isa; /* architectural level */ |
2bcb2ab3 GK |
140 | extern int mips16; /* whether generating mips16 code */ |
141 | extern int mips16_hard_float; /* mips16 without -msoft-float */ | |
142 | extern int mips_entry; /* generate entry/exit for mips16 */ | |
e2fe6aba | 143 | extern const char *mips_cpu_string; /* for -mcpu=<xxx> */ |
7dac2f89 EC |
144 | extern const char *mips_arch_string; /* for -march=<xxx> */ |
145 | extern const char *mips_tune_string; /* for -mtune=<xxx> */ | |
e2fe6aba KG |
146 | extern const char *mips_isa_string; /* for -mips{1,2,3,4} */ |
147 | extern const char *mips_abi_string; /* for -mabi={32,n32,64} */ | |
148 | extern const char *mips_entry_string; /* for -mentry */ | |
149 | extern const char *mips_no_mips16_string;/* for -mno-mips16 */ | |
3ce1ba83 | 150 | extern const char *mips_explicit_type_size_string;/* for -mexplicit-type-size */ |
ce57d6f4 | 151 | extern int mips_split_addresses; /* perform high/lo_sum support */ |
e75b25e7 MM |
152 | extern int dslots_load_total; /* total # load related delay slots */ |
153 | extern int dslots_load_filled; /* # filled load delay slots */ | |
154 | extern int dslots_jump_total; /* total # jump related delay slots */ | |
155 | extern int dslots_jump_filled; /* # filled jump delay slots */ | |
156 | extern int dslots_number_nops; /* # of nops needed by previous insn */ | |
157 | extern int num_refs[3]; /* # 1/2/3 word references */ | |
158 | extern struct rtx_def *mips_load_reg; /* register to check for load delay */ | |
159 | extern struct rtx_def *mips_load_reg2; /* 2nd reg to check for load delay */ | |
160 | extern struct rtx_def *mips_load_reg3; /* 3rd reg to check for load delay */ | |
161 | extern struct rtx_def *mips_load_reg4; /* 4th reg to check for load delay */ | |
92544bdf | 162 | extern struct rtx_def *embedded_pic_fnaddr_rtx; /* function address */ |
2bcb2ab3 GK |
163 | extern int mips_string_length; /* length of strings for mips16 */ |
164 | extern struct rtx_def *mips16_gp_pseudo_rtx; /* psuedo reg holding $gp */ | |
e75b25e7 | 165 | |
0fb5ac6f | 166 | /* Functions to change what output section we are using. */ |
bd9f1972 KG |
167 | extern void rdata_section PARAMS ((void)); |
168 | extern void sdata_section PARAMS ((void)); | |
cc8f5ec0 | 169 | extern void sbss_section PARAMS ((void)); |
e75b25e7 | 170 | |
31c714e3 MM |
171 | /* Stubs for half-pic support if not OSF/1 reference platform. */ |
172 | ||
173 | #ifndef HALF_PIC_P | |
174 | #define HALF_PIC_P() 0 | |
4a392643 RS |
175 | #define HALF_PIC_NUMBER_PTRS 0 |
176 | #define HALF_PIC_NUMBER_REFS 0 | |
31c714e3 | 177 | #define HALF_PIC_ENCODE(DECL) |
f3b39eba | 178 | #define HALF_PIC_DECLARE(NAME) |
31c714e3 MM |
179 | #define HALF_PIC_INIT() error ("half-pic init called on systems that don't support it.") |
180 | #define HALF_PIC_ADDRESS_P(X) 0 | |
d26e29e1 MM |
181 | #define HALF_PIC_PTR(X) X |
182 | #define HALF_PIC_FINISH(STREAM) | |
31c714e3 MM |
183 | #endif |
184 | ||
3a6ee9f4 MM |
185 | /* Macros to silence warnings about numbers being signed in traditional |
186 | C and unsigned in ISO C when compiled on 32-bit hosts. */ | |
187 | ||
188 | #define BITMASK_HIGH (((unsigned long)1) << 31) /* 0x80000000 */ | |
189 | #define BITMASK_UPPER16 ((unsigned long)0xffff << 16) /* 0xffff0000 */ | |
190 | #define BITMASK_LOWER16 ((unsigned long)0xffff) /* 0x0000ffff */ | |
191 | ||
149e4e00 MM |
192 | \f |
193 | /* Run-time compilation parameters selecting different hardware subsets. */ | |
194 | ||
195 | /* Macros used in the machine description to test the flags. */ | |
196 | ||
197 | /* Bits for real switches */ | |
6d81ba45 CD |
198 | #define MASK_INT64 0x00000001 /* ints are 64 bits */ |
199 | #define MASK_LONG64 0x00000002 /* longs are 64 bits */ | |
200 | #define MASK_SPLIT_ADDR 0x00000004 /* Address splitting is enabled. */ | |
201 | #define MASK_GPOPT 0x00000008 /* Optimize for global pointer */ | |
202 | #define MASK_GAS 0x00000010 /* Gas used instead of MIPS as */ | |
203 | #define MASK_NAME_REGS 0x00000020 /* Use MIPS s/w reg name convention */ | |
204 | #define MASK_STATS 0x00000040 /* print statistics to stderr */ | |
205 | #define MASK_MEMCPY 0x00000080 /* call memcpy instead of inline code*/ | |
206 | #define MASK_SOFT_FLOAT 0x00000100 /* software floating point */ | |
207 | #define MASK_FLOAT64 0x00000200 /* fp registers are 64 bits */ | |
208 | #define MASK_ABICALLS 0x00000400 /* emit .abicalls/.cprestore/.cpload */ | |
209 | #define MASK_HALF_PIC 0x00000800 /* Emit OSF-style pic refs to externs*/ | |
210 | #define MASK_LONG_CALLS 0x00001000 /* Always call through a register */ | |
211 | #define MASK_64BIT 0x00002000 /* Use 64 bit GP registers and insns */ | |
212 | #define MASK_EMBEDDED_PIC 0x00004000 /* Generate embedded PIC code */ | |
365c6a0b | 213 | #define MASK_EMBEDDED_DATA 0x00008000 /* Reduce RAM usage, not fast code */ |
6d81ba45 CD |
214 | #define MASK_BIG_ENDIAN 0x00010000 /* Generate big endian code */ |
215 | #define MASK_SINGLE_FLOAT 0x00020000 /* Only single precision FPU. */ | |
216 | #define MASK_MAD 0x00040000 /* Generate mad/madu as on 4650. */ | |
217 | #define MASK_4300_MUL_FIX 0x00080000 /* Work-around early Vr4300 CPU bug */ | |
7dac2f89 | 218 | #define MASK_MIPS16 0x00100000 /* Generate mips16 code */ |
6d81ba45 | 219 | #define MASK_NO_CHECK_ZERO_DIV \ |
7dac2f89 | 220 | 0x00200000 /* divide by zero checking */ |
6d81ba45 | 221 | #define MASK_CHECK_RANGE_DIV \ |
7dac2f89 | 222 | 0x00400000 /* divide result range checking */ |
6d81ba45 | 223 | #define MASK_UNINIT_CONST_IN_RODATA \ |
7dac2f89 | 224 | 0x00800000 /* Store uninitialized |
6d81ba45 | 225 | consts in rodata */ |
149e4e00 MM |
226 | |
227 | /* Debug switches, not documented */ | |
6d81ba45 CD |
228 | #define MASK_DEBUG 0 /* unused */ |
229 | #define MASK_DEBUG_A 0 /* don't allow <label>($reg) addrs */ | |
230 | #define MASK_DEBUG_B 0 /* GO_IF_LEGITIMATE_ADDRESS debug */ | |
231 | #define MASK_DEBUG_C 0 /* don't expand seq, etc. */ | |
08c2951c | 232 | #define MASK_DEBUG_D 0 /* don't do define_split's */ |
e4f5c5d6 | 233 | #define MASK_DEBUG_E 0 /* function_arg debug */ |
6d81ba45 | 234 | #define MASK_DEBUG_F 0 /* ??? */ |
2bcb2ab3 | 235 | #define MASK_DEBUG_G 0 /* don't support 64 bit arithmetic */ |
6d1350cd | 236 | #define MASK_DEBUG_H 0 /* allow ints in FP registers */ |
e4f5c5d6 | 237 | #define MASK_DEBUG_I 0 /* unused */ |
149e4e00 | 238 | |
6d81ba45 CD |
239 | /* Dummy switches used only in specs */ |
240 | #define MASK_MIPS_TFILE 0 /* flag for mips-tfile usage */ | |
241 | ||
149e4e00 MM |
242 | /* r4000 64 bit sizes */ |
243 | #define TARGET_INT64 (target_flags & MASK_INT64) | |
244 | #define TARGET_LONG64 (target_flags & MASK_LONG64) | |
149e4e00 | 245 | #define TARGET_FLOAT64 (target_flags & MASK_FLOAT64) |
876c09d3 | 246 | #define TARGET_64BIT (target_flags & MASK_64BIT) |
149e4e00 | 247 | |
5ef37cd3 JW |
248 | /* Mips vs. GNU linker */ |
249 | #define TARGET_SPLIT_ADDRESSES (target_flags & MASK_SPLIT_ADDR) | |
250 | ||
149e4e00 MM |
251 | /* Mips vs. GNU assembler */ |
252 | #define TARGET_GAS (target_flags & MASK_GAS) | |
6d81ba45 | 253 | #define TARGET_MIPS_AS (!TARGET_GAS) |
149e4e00 | 254 | |
6d81ba45 | 255 | /* Debug Modes */ |
149e4e00 MM |
256 | #define TARGET_DEBUG_MODE (target_flags & MASK_DEBUG) |
257 | #define TARGET_DEBUG_A_MODE (target_flags & MASK_DEBUG_A) | |
258 | #define TARGET_DEBUG_B_MODE (target_flags & MASK_DEBUG_B) | |
259 | #define TARGET_DEBUG_C_MODE (target_flags & MASK_DEBUG_C) | |
260 | #define TARGET_DEBUG_D_MODE (target_flags & MASK_DEBUG_D) | |
261 | #define TARGET_DEBUG_E_MODE (target_flags & MASK_DEBUG_E) | |
262 | #define TARGET_DEBUG_F_MODE (target_flags & MASK_DEBUG_F) | |
263 | #define TARGET_DEBUG_G_MODE (target_flags & MASK_DEBUG_G) | |
264 | #define TARGET_DEBUG_H_MODE (target_flags & MASK_DEBUG_H) | |
265 | #define TARGET_DEBUG_I_MODE (target_flags & MASK_DEBUG_I) | |
149e4e00 MM |
266 | |
267 | /* Reg. Naming in .s ($21 vs. $a0) */ | |
268 | #define TARGET_NAME_REGS (target_flags & MASK_NAME_REGS) | |
269 | ||
270 | /* Optimize for Sdata/Sbss */ | |
271 | #define TARGET_GP_OPT (target_flags & MASK_GPOPT) | |
272 | ||
273 | /* print program statistics */ | |
274 | #define TARGET_STATS (target_flags & MASK_STATS) | |
275 | ||
276 | /* call memcpy instead of inline code */ | |
277 | #define TARGET_MEMCPY (target_flags & MASK_MEMCPY) | |
278 | ||
279 | /* .abicalls, etc from Pyramid V.4 */ | |
280 | #define TARGET_ABICALLS (target_flags & MASK_ABICALLS) | |
281 | ||
282 | /* OSF pic references to externs */ | |
283 | #define TARGET_HALF_PIC (target_flags & MASK_HALF_PIC) | |
284 | ||
285 | /* software floating point */ | |
286 | #define TARGET_SOFT_FLOAT (target_flags & MASK_SOFT_FLOAT) | |
287 | #define TARGET_HARD_FLOAT (! TARGET_SOFT_FLOAT) | |
288 | ||
289 | /* always call through a register */ | |
290 | #define TARGET_LONG_CALLS (target_flags & MASK_LONG_CALLS) | |
291 | ||
e0bfcea5 ILT |
292 | /* generate embedded PIC code; |
293 | requires gas. */ | |
294 | #define TARGET_EMBEDDED_PIC (target_flags & MASK_EMBEDDED_PIC) | |
295 | ||
365c6a0b JW |
296 | /* for embedded systems, optimize for |
297 | reduced RAM space instead of for | |
298 | fastest code. */ | |
299 | #define TARGET_EMBEDDED_DATA (target_flags & MASK_EMBEDDED_DATA) | |
300 | ||
919509ce DN |
301 | /* always store uninitialized const |
302 | variables in rodata, requires | |
303 | TARGET_EMBEDDED_DATA. */ | |
304 | #define TARGET_UNINIT_CONST_IN_RODATA (target_flags & MASK_UNINIT_CONST_IN_RODATA) | |
305 | ||
96abdcb1 ILT |
306 | /* generate big endian code. */ |
307 | #define TARGET_BIG_ENDIAN (target_flags & MASK_BIG_ENDIAN) | |
308 | ||
46299de9 ILT |
309 | #define TARGET_SINGLE_FLOAT (target_flags & MASK_SINGLE_FLOAT) |
310 | #define TARGET_DOUBLE_FLOAT (! TARGET_SINGLE_FLOAT) | |
311 | ||
312 | #define TARGET_MAD (target_flags & MASK_MAD) | |
313 | ||
00b3e052 JW |
314 | #define TARGET_4300_MUL_FIX (target_flags & MASK_4300_MUL_FIX) |
315 | ||
08c2951c SC |
316 | #define TARGET_NO_CHECK_ZERO_DIV (target_flags & MASK_NO_CHECK_ZERO_DIV) |
317 | #define TARGET_CHECK_RANGE_DIV (target_flags & MASK_CHECK_RANGE_DIV) | |
318 | ||
33b5e50b JW |
319 | /* This is true if we must enable the assembly language file switching |
320 | code. */ | |
321 | ||
f99ffb60 RH |
322 | #define TARGET_FILE_SWITCHING \ |
323 | (TARGET_GP_OPT && ! TARGET_GAS && ! TARGET_MIPS16) | |
33b5e50b JW |
324 | |
325 | /* We must disable the function end stabs when doing the file switching trick, | |
326 | because the Lscope stabs end up in the wrong place, making it impossible | |
327 | to debug the resulting code. */ | |
328 | #define NO_DBX_FUNCTION_END TARGET_FILE_SWITCHING | |
329 | ||
2bcb2ab3 GK |
330 | /* Generate mips16 code */ |
331 | #define TARGET_MIPS16 (target_flags & MASK_MIPS16) | |
332 | ||
7dac2f89 EC |
333 | /* Architecture target defines. */ |
334 | #define TARGET_MIPS3900 (mips_arch == PROCESSOR_R3900) | |
335 | #define TARGET_MIPS4000 (mips_arch == PROCESSOR_R4000) | |
336 | #define TARGET_MIPS4100 (mips_arch == PROCESSOR_R4100) | |
337 | #define TARGET_MIPS4300 (mips_arch == PROCESSOR_R4300) | |
338 | ||
339 | /* Scheduling target defines. */ | |
7a38df19 EC |
340 | #define TUNE_MIPS3000 (mips_tune == PROCESSOR_R3000) |
341 | #define TUNE_MIPS3900 (mips_tune == PROCESSOR_R3900) | |
342 | #define TUNE_MIPS4000 (mips_tune == PROCESSOR_R4000) | |
343 | #define TUNE_MIPS5000 (mips_tune == PROCESSOR_R5000) | |
344 | #define TUNE_MIPS6000 (mips_tune == PROCESSOR_R6000) | |
7dac2f89 | 345 | |
149e4e00 MM |
346 | /* Macro to define tables used to set the flags. |
347 | This is a list in braces of pairs in braces, | |
348 | each pair being { "NAME", VALUE } | |
349 | where VALUE is the bits to set or minus the bits to clear. | |
350 | An empty string NAME is used to identify the default VALUE. */ | |
351 | ||
352 | #define TARGET_SWITCHES \ | |
353 | { \ | |
c45fd7f9 | 354 | {"no-crt0", 0, \ |
047142d3 | 355 | N_("No default crt0.o") }, \ |
a127db75 | 356 | {"int64", MASK_INT64 | MASK_LONG64, \ |
047142d3 | 357 | N_("Use 64-bit int type")}, \ |
a127db75 | 358 | {"long64", MASK_LONG64, \ |
047142d3 | 359 | N_("Use 64-bit long type")}, \ |
a127db75 | 360 | {"long32", -(MASK_LONG64 | MASK_INT64), \ |
047142d3 | 361 | N_("Use 32-bit long type")}, \ |
a127db75 | 362 | {"split-addresses", MASK_SPLIT_ADDR, \ |
047142d3 | 363 | N_("Optimize lui/addiu address loads")}, \ |
a127db75 | 364 | {"no-split-addresses", -MASK_SPLIT_ADDR, \ |
047142d3 | 365 | N_("Don't optimize lui/addiu address loads")}, \ |
a127db75 | 366 | {"mips-as", -MASK_GAS, \ |
047142d3 | 367 | N_("Use MIPS as")}, \ |
a127db75 | 368 | {"gas", MASK_GAS, \ |
047142d3 | 369 | N_("Use GNU as")}, \ |
a127db75 | 370 | {"rnames", MASK_NAME_REGS, \ |
047142d3 | 371 | N_("Use symbolic register names")}, \ |
a127db75 | 372 | {"no-rnames", -MASK_NAME_REGS, \ |
047142d3 | 373 | N_("Don't use symbolic register names")}, \ |
a127db75 | 374 | {"gpOPT", MASK_GPOPT, \ |
047142d3 | 375 | N_("Use GP relative sdata/sbss sections")}, \ |
a127db75 | 376 | {"gpopt", MASK_GPOPT, \ |
047142d3 | 377 | N_("Use GP relative sdata/sbss sections")}, \ |
a127db75 | 378 | {"no-gpOPT", -MASK_GPOPT, \ |
047142d3 | 379 | N_("Don't use GP relative sdata/sbss sections")}, \ |
a127db75 | 380 | {"no-gpopt", -MASK_GPOPT, \ |
047142d3 | 381 | N_("Don't use GP relative sdata/sbss sections")}, \ |
a127db75 | 382 | {"stats", MASK_STATS, \ |
047142d3 | 383 | N_("Output compiler statistics")}, \ |
a127db75 | 384 | {"no-stats", -MASK_STATS, \ |
047142d3 | 385 | N_("Don't output compiler statistics")}, \ |
a127db75 | 386 | {"memcpy", MASK_MEMCPY, \ |
047142d3 | 387 | N_("Don't optimize block moves")}, \ |
a127db75 | 388 | {"no-memcpy", -MASK_MEMCPY, \ |
047142d3 | 389 | N_("Optimize block moves")}, \ |
a127db75 | 390 | {"mips-tfile", MASK_MIPS_TFILE, \ |
047142d3 | 391 | N_("Use mips-tfile asm postpass")}, \ |
a127db75 | 392 | {"no-mips-tfile", -MASK_MIPS_TFILE, \ |
047142d3 | 393 | N_("Don't use mips-tfile asm postpass")}, \ |
a127db75 | 394 | {"soft-float", MASK_SOFT_FLOAT, \ |
047142d3 | 395 | N_("Use software floating point")}, \ |
a127db75 | 396 | {"hard-float", -MASK_SOFT_FLOAT, \ |
047142d3 | 397 | N_("Use hardware floating point")}, \ |
a127db75 | 398 | {"fp64", MASK_FLOAT64, \ |
047142d3 | 399 | N_("Use 64-bit FP registers")}, \ |
a127db75 | 400 | {"fp32", -MASK_FLOAT64, \ |
047142d3 | 401 | N_("Use 32-bit FP registers")}, \ |
a127db75 | 402 | {"gp64", MASK_64BIT, \ |
047142d3 | 403 | N_("Use 64-bit general registers")}, \ |
a127db75 | 404 | {"gp32", -MASK_64BIT, \ |
047142d3 | 405 | N_("Use 32-bit general registers")}, \ |
a127db75 | 406 | {"abicalls", MASK_ABICALLS, \ |
047142d3 | 407 | N_("Use Irix PIC")}, \ |
a127db75 | 408 | {"no-abicalls", -MASK_ABICALLS, \ |
047142d3 | 409 | N_("Don't use Irix PIC")}, \ |
a127db75 | 410 | {"half-pic", MASK_HALF_PIC, \ |
047142d3 | 411 | N_("Use OSF PIC")}, \ |
a127db75 | 412 | {"no-half-pic", -MASK_HALF_PIC, \ |
047142d3 | 413 | N_("Don't use OSF PIC")}, \ |
a127db75 | 414 | {"long-calls", MASK_LONG_CALLS, \ |
047142d3 | 415 | N_("Use indirect calls")}, \ |
a127db75 | 416 | {"no-long-calls", -MASK_LONG_CALLS, \ |
047142d3 | 417 | N_("Don't use indirect calls")}, \ |
a127db75 | 418 | {"embedded-pic", MASK_EMBEDDED_PIC, \ |
047142d3 | 419 | N_("Use embedded PIC")}, \ |
a127db75 | 420 | {"no-embedded-pic", -MASK_EMBEDDED_PIC, \ |
047142d3 | 421 | N_("Don't use embedded PIC")}, \ |
a127db75 | 422 | {"embedded-data", MASK_EMBEDDED_DATA, \ |
047142d3 | 423 | N_("Use ROM instead of RAM")}, \ |
a127db75 | 424 | {"no-embedded-data", -MASK_EMBEDDED_DATA, \ |
047142d3 | 425 | N_("Don't use ROM instead of RAM")}, \ |
919509ce | 426 | {"uninit-const-in-rodata", MASK_UNINIT_CONST_IN_RODATA, \ |
047142d3 | 427 | N_("Put uninitialized constants in ROM (needs -membedded-data)")}, \ |
919509ce | 428 | {"no-uninit-const-in-rodata", -MASK_UNINIT_CONST_IN_RODATA, \ |
047142d3 | 429 | N_("Don't put uninitialized constants in ROM")}, \ |
a127db75 | 430 | {"eb", MASK_BIG_ENDIAN, \ |
047142d3 | 431 | N_("Use big-endian byte order")}, \ |
a127db75 | 432 | {"el", -MASK_BIG_ENDIAN, \ |
047142d3 | 433 | N_("Use little-endian byte order")}, \ |
a127db75 | 434 | {"single-float", MASK_SINGLE_FLOAT, \ |
047142d3 | 435 | N_("Use single (32-bit) FP only")}, \ |
a127db75 | 436 | {"double-float", -MASK_SINGLE_FLOAT, \ |
047142d3 | 437 | N_("Don't use single (32-bit) FP only")}, \ |
a127db75 | 438 | {"mad", MASK_MAD, \ |
047142d3 | 439 | N_("Use multiply accumulate")}, \ |
a127db75 | 440 | {"no-mad", -MASK_MAD, \ |
047142d3 | 441 | N_("Don't use multiply accumulate")}, \ |
a127db75 | 442 | {"fix4300", MASK_4300_MUL_FIX, \ |
047142d3 | 443 | N_("Work around early 4300 hardware bug")}, \ |
a127db75 | 444 | {"no-fix4300", -MASK_4300_MUL_FIX, \ |
047142d3 | 445 | N_("Don't work around early 4300 hardware bug")}, \ |
7dac2f89 | 446 | {"3900", 0, \ |
047142d3 | 447 | N_("Optimize for 3900")}, \ |
7dac2f89 EC |
448 | {"4650", 0, \ |
449 | N_("Optimize for 4650")}, \ | |
a127db75 | 450 | {"check-zero-division",-MASK_NO_CHECK_ZERO_DIV, \ |
047142d3 | 451 | N_("Trap on integer divide by zero")}, \ |
a127db75 | 452 | {"no-check-zero-division", MASK_NO_CHECK_ZERO_DIV, \ |
047142d3 | 453 | N_("Don't trap on integer divide by zero")}, \ |
a127db75 | 454 | {"check-range-division",MASK_CHECK_RANGE_DIV, \ |
047142d3 | 455 | N_("Trap on integer divide overflow")}, \ |
a127db75 | 456 | {"no-check-range-division",-MASK_CHECK_RANGE_DIV, \ |
047142d3 | 457 | N_("Don't trap on integer divide overflow")}, \ |
a127db75 JW |
458 | {"debug", MASK_DEBUG, \ |
459 | NULL}, \ | |
460 | {"debuga", MASK_DEBUG_A, \ | |
461 | NULL}, \ | |
462 | {"debugb", MASK_DEBUG_B, \ | |
463 | NULL}, \ | |
464 | {"debugc", MASK_DEBUG_C, \ | |
465 | NULL}, \ | |
466 | {"debugd", MASK_DEBUG_D, \ | |
467 | NULL}, \ | |
468 | {"debuge", MASK_DEBUG_E, \ | |
469 | NULL}, \ | |
470 | {"debugf", MASK_DEBUG_F, \ | |
471 | NULL}, \ | |
472 | {"debugg", MASK_DEBUG_G, \ | |
473 | NULL}, \ | |
474 | {"debugh", MASK_DEBUG_H, \ | |
475 | NULL}, \ | |
476 | {"debugi", MASK_DEBUG_I, \ | |
477 | NULL}, \ | |
96abdcb1 ILT |
478 | {"", (TARGET_DEFAULT \ |
479 | | TARGET_CPU_DEFAULT \ | |
a127db75 JW |
480 | | TARGET_ENDIAN_DEFAULT), \ |
481 | NULL}, \ | |
7dac2f89 | 482 | } |
149e4e00 MM |
483 | |
484 | /* Default target_flags if no switches are specified */ | |
485 | ||
486 | #ifndef TARGET_DEFAULT | |
487 | #define TARGET_DEFAULT 0 | |
488 | #endif | |
489 | ||
404f986e MM |
490 | #ifndef TARGET_CPU_DEFAULT |
491 | #define TARGET_CPU_DEFAULT 0 | |
492 | #endif | |
493 | ||
96abdcb1 ILT |
494 | #ifndef TARGET_ENDIAN_DEFAULT |
495 | #ifndef DECSTATION | |
496 | #define TARGET_ENDIAN_DEFAULT MASK_BIG_ENDIAN | |
497 | #else | |
498 | #define TARGET_ENDIAN_DEFAULT 0 | |
499 | #endif | |
500 | #endif | |
501 | ||
ea09f032 GRK |
502 | #ifndef MIPS_ISA_DEFAULT |
503 | #define MIPS_ISA_DEFAULT 1 | |
504 | #endif | |
505 | ||
996ed075 JJ |
506 | #ifdef IN_LIBGCC2 |
507 | #undef TARGET_64BIT | |
508 | /* Make this compile time constant for libgcc2 */ | |
509 | #ifdef __mips64 | |
510 | #define TARGET_64BIT 1 | |
511 | #else | |
512 | #define TARGET_64BIT 0 | |
513 | #endif | |
440927ec | 514 | #endif /* IN_LIBGCC2 */ |
996ed075 | 515 | |
cbab8d02 | 516 | #ifndef MULTILIB_ENDIAN_DEFAULT |
7f2e00db | 517 | #if TARGET_ENDIAN_DEFAULT == 0 |
cbab8d02 | 518 | #define MULTILIB_ENDIAN_DEFAULT "EL" |
7f2e00db | 519 | #else |
cbab8d02 GRK |
520 | #define MULTILIB_ENDIAN_DEFAULT "EB" |
521 | #endif | |
7f2e00db | 522 | #endif |
cbab8d02 | 523 | |
ea09f032 | 524 | #ifndef MULTILIB_ISA_DEFAULT |
7ce2fcb9 KG |
525 | # if MIPS_ISA_DEFAULT == 1 |
526 | # define MULTILIB_ISA_DEFAULT "mips1" | |
527 | # else | |
528 | # if MIPS_ISA_DEFAULT == 2 | |
529 | # define MULTILIB_ISA_DEFAULT "mips2" | |
530 | # else | |
531 | # if MIPS_ISA_DEFAULT == 3 | |
532 | # define MULTILIB_ISA_DEFAULT "mips3" | |
533 | # else | |
534 | # if MIPS_ISA_DEFAULT == 4 | |
535 | # define MULTILIB_ISA_DEFAULT "mips4" | |
536 | # else | |
537 | # define MULTILIB_ISA_DEFAULT "mips1" | |
538 | # endif | |
539 | # endif | |
540 | # endif | |
541 | # endif | |
ea09f032 GRK |
542 | #endif |
543 | ||
cbab8d02 | 544 | #ifndef MULTILIB_DEFAULTS |
ea09f032 | 545 | #define MULTILIB_DEFAULTS { MULTILIB_ENDIAN_DEFAULT, MULTILIB_ISA_DEFAULT } |
7f2e00db RK |
546 | #endif |
547 | ||
34bcd7fd JW |
548 | /* We must pass -EL to the linker by default for little endian embedded |
549 | targets using linker scripts with a OUTPUT_FORMAT line. Otherwise, the | |
550 | linker will default to using big-endian output files. The OUTPUT_FORMAT | |
551 | line must be in the linker script, otherwise -EB/-EL will not work. */ | |
552 | ||
120dc6cd | 553 | #ifndef ENDIAN_SPEC |
34bcd7fd | 554 | #if TARGET_ENDIAN_DEFAULT == 0 |
120dc6cd | 555 | #define ENDIAN_SPEC "%{!EB:%{!meb:-EL}} %{EL} %{EB}" |
34bcd7fd | 556 | #else |
120dc6cd | 557 | #define ENDIAN_SPEC "%{!EL:%{!mel:-EB}} %{EB} %{EL}" |
34bcd7fd JW |
558 | #endif |
559 | #endif | |
560 | ||
149e4e00 MM |
561 | /* This macro is similar to `TARGET_SWITCHES' but defines names of |
562 | command options that have values. Its definition is an | |
563 | initializer with a subgrouping for each command option. | |
564 | ||
565 | Each subgrouping contains a string constant, that defines the | |
7dac2f89 | 566 | fixed part of the option name, and the address of a variable. |
149e4e00 MM |
567 | The variable, type `char *', is set to the variable part of the |
568 | given option if the fixed part matches. The actual option name | |
569 | is made by appending `-m' to the specified name. | |
570 | ||
571 | Here is an example which defines `-mshort-data-NUMBER'. If the | |
572 | given option is `-mshort-data-512', the variable `m88k_short_data' | |
573 | will be set to the string `"512"'. | |
574 | ||
575 | extern char *m88k_short_data; | |
576 | #define TARGET_OPTIONS { { "short-data-", &m88k_short_data } } */ | |
577 | ||
578 | #define TARGET_OPTIONS \ | |
579 | { \ | |
b2d8cf33 | 580 | SUBTARGET_TARGET_OPTIONS \ |
a127db75 | 581 | { "cpu=", &mips_cpu_string, \ |
047142d3 | 582 | N_("Specify CPU for scheduling purposes")}, \ |
7dac2f89 EC |
583 | { "tune=", &mips_tune_string, \ |
584 | N_("Specify CPU for scheduling purposes")}, \ | |
585 | { "arch=", &mips_arch_string, \ | |
586 | N_("Specify CPU for code generation purposes")}, \ | |
a127db75 | 587 | { "ips", &mips_isa_string, \ |
7dac2f89 | 588 | N_("Specify a Standard MIPS ISA")}, \ |
a127db75 | 589 | { "entry", &mips_entry_string, \ |
047142d3 | 590 | N_("Use mips16 entry/exit psuedo ops")}, \ |
a127db75 | 591 | { "no-mips16", &mips_no_mips16_string, \ |
047142d3 | 592 | N_("Don't use MIPS16 instructions")}, \ |
a127db75 JW |
593 | { "explicit-type-size", &mips_explicit_type_size_string, \ |
594 | NULL}, \ | |
149e4e00 MM |
595 | } |
596 | ||
b2d8cf33 JW |
597 | /* This is meant to be redefined in the host dependent files. */ |
598 | #define SUBTARGET_TARGET_OPTIONS | |
599 | ||
7dac2f89 | 600 | #define GENERATE_BRANCHLIKELY (!TARGET_MIPS16 && ISA_HAS_BRANCHLIKELY) |
e4f5c5d6 KR |
601 | |
602 | /* Generate three-operand multiply instructions for both SImode and DImode. */ | |
2bcb2ab3 | 603 | #define GENERATE_MULT3 (TARGET_MIPS3900 \ |
60db002d | 604 | && !TARGET_MIPS16) |
e9a25f70 | 605 | |
149e4e00 MM |
606 | /* Macros to decide whether certain features are available or not, |
607 | depending on the instruction set architecture level. */ | |
608 | ||
e9a25f70 | 609 | #define BRANCH_LIKELY_P() GENERATE_BRANCHLIKELY |
1d5d552e GRK |
610 | #define HAVE_SQRT_P() (mips_isa != 1) |
611 | ||
612 | /* ISA has instructions for managing 64 bit fp and gp regs (eg. mips3). */ | |
76ee8042 GRK |
613 | #define ISA_HAS_64BIT_REGS (mips_isa == 3 || mips_isa == 4 \ |
614 | ) | |
1d5d552e | 615 | |
7dac2f89 EC |
616 | /* ISA has branch likely instructions (eg. mips2). */ |
617 | /* Disable branchlikely for tx39 until compare rewrite. They haven't | |
618 | been generated up to this point. */ | |
619 | #define ISA_HAS_BRANCHLIKELY (mips_isa != 1 \ | |
620 | /* || TARGET_MIPS3900 */) | |
1d5d552e | 621 | |
76ee8042 GRK |
622 | /* ISA has the conditional move instructions introduced in mips4. */ |
623 | #define ISA_HAS_CONDMOVE (mips_isa == 4 \ | |
624 | ) | |
625 | ||
0025b7fa GRK |
626 | /* ISA has just the integer condition move instructions (movn,movz) */ |
627 | #define ISA_HAS_INT_CONDMOVE 0 | |
628 | ||
629 | ||
630 | ||
76ee8042 GRK |
631 | /* ISA has the mips4 FP condition code instructions: FP-compare to CC, |
632 | branch on CC, and move (both FP and non-FP) on CC. */ | |
633 | #define ISA_HAS_8CC (mips_isa == 4 \ | |
634 | ) | |
635 | ||
636 | ||
637 | /* This is a catch all for the other new mips4 instructions: indexed load and | |
7dac2f89 | 638 | indexed prefetch instructions, the FP madd,msub,nmadd, and nmsub instructions, |
76ee8042 GRK |
639 | and the FP recip and recip sqrt instructions */ |
640 | #define ISA_HAS_FP4 (mips_isa == 4 \ | |
641 | ) | |
642 | ||
a0b6cdee GM |
643 | /* ISA has conditional trap instructions. */ |
644 | #define ISA_HAS_COND_TRAP (mips_isa >= 2) | |
1d5d552e | 645 | |
1f28c666 AH |
646 | /* ISA has nmadd and nmsub instructions. */ |
647 | #define ISA_HAS_NMADD_NMSUB (mips_isa == 4 \ | |
648 | ) | |
149e4e00 | 649 | |
516a2dfd JW |
650 | /* CC1_SPEC causes -mips3 and -mips4 to set -mfp64 and -mgp64; -mips1 or |
651 | -mips2 sets -mfp32 and -mgp32. This can be overridden by an explicit | |
2370b831 JW |
652 | -mfp32, -mfp64, -mgp32 or -mgp64. -mfp64 sets MASK_FLOAT64 in |
653 | target_flags, and -mgp64 sets MASK_64BIT. | |
876c09d3 | 654 | |
2370b831 JW |
655 | Setting MASK_64BIT in target_flags will cause gcc to assume that |
656 | registers are 64 bits wide. int, long and void * will be 32 bit; | |
657 | this may be changed with -mint64 or -mlong64. | |
876c09d3 | 658 | |
2370b831 JW |
659 | The gen* programs link code that refers to MASK_64BIT. They don't |
660 | actually use the information in target_flags; they just refer to | |
661 | it. */ | |
e75b25e7 MM |
662 | \f |
663 | /* Switch Recognition by gcc.c. Add -G xx support */ | |
664 | ||
665 | #ifdef SWITCH_TAKES_ARG | |
666 | #undef SWITCH_TAKES_ARG | |
667 | #endif | |
668 | ||
669 | #define SWITCH_TAKES_ARG(CHAR) \ | |
7d4ea832 | 670 | (DEFAULT_SWITCH_TAKES_ARG (CHAR) || (CHAR) == 'G') |
e75b25e7 MM |
671 | |
672 | /* Sometimes certain combinations of command options do not make sense | |
673 | on a particular target machine. You can define a macro | |
674 | `OVERRIDE_OPTIONS' to take account of this. This macro, if | |
675 | defined, is executed once just after all the command options have | |
676 | been parsed. | |
677 | ||
678 | On the MIPS, it is used to handle -G. We also use it to set up all | |
679 | of the tables referenced in the other macros. */ | |
680 | ||
681 | #define OVERRIDE_OPTIONS override_options () | |
682 | ||
683 | /* Zero or more C statements that may conditionally modify two | |
684 | variables `fixed_regs' and `call_used_regs' (both of type `char | |
685 | []') after they have been initialized from the two preceding | |
686 | macros. | |
687 | ||
688 | This is necessary in case the fixed or call-clobbered registers | |
689 | depend on target flags. | |
690 | ||
691 | You need not define this macro if it has no work to do. | |
692 | ||
693 | If the usage of an entire class of registers depends on the target | |
694 | flags, you may indicate this to GCC by using this macro to modify | |
695 | `fixed_regs' and `call_used_regs' to 1 for each of the registers in | |
696 | the classes which should not be used by GCC. Also define the macro | |
697 | `REG_CLASS_FROM_LETTER' to return `NO_REGS' if it is called with a | |
698 | letter for a class that shouldn't be used. | |
699 | ||
700 | (However, if this class is not included in `GENERAL_REGS' and all | |
701 | of the insn patterns whose constraints permit this class are | |
702 | controlled by target switches, then GCC will automatically avoid | |
703 | using these registers when the target switches are opposed to | |
704 | them.) */ | |
705 | ||
706 | #define CONDITIONAL_REGISTER_USAGE \ | |
707 | do \ | |
708 | { \ | |
709 | if (!TARGET_HARD_FLOAT) \ | |
710 | { \ | |
711 | int regno; \ | |
712 | \ | |
713 | for (regno = FP_REG_FIRST; regno <= FP_REG_LAST; regno++) \ | |
714 | fixed_regs[regno] = call_used_regs[regno] = 1; \ | |
b8eb88d0 ILT |
715 | for (regno = ST_REG_FIRST; regno <= ST_REG_LAST; regno++) \ |
716 | fixed_regs[regno] = call_used_regs[regno] = 1; \ | |
717 | } \ | |
76ee8042 | 718 | else if (! ISA_HAS_8CC) \ |
b8eb88d0 ILT |
719 | { \ |
720 | int regno; \ | |
721 | \ | |
722 | /* We only have a single condition code register. We \ | |
723 | implement this by hiding all the condition code registers, \ | |
724 | and generating RTL that refers directly to ST_REG_FIRST. */ \ | |
725 | for (regno = ST_REG_FIRST; regno <= ST_REG_LAST; regno++) \ | |
726 | fixed_regs[regno] = call_used_regs[regno] = 1; \ | |
e75b25e7 | 727 | } \ |
2bcb2ab3 GK |
728 | /* In mips16 mode, we permit the $t temporary registers to be used \ |
729 | for reload. We prohibit the unused $s registers, since they \ | |
730 | are caller saved, and saving them via a mips16 register would \ | |
731 | probably waste more time than just reloading the value. */ \ | |
732 | if (TARGET_MIPS16) \ | |
733 | { \ | |
734 | fixed_regs[18] = call_used_regs[18] = 1; \ | |
735 | fixed_regs[19] = call_used_regs[19] = 1; \ | |
736 | fixed_regs[20] = call_used_regs[20] = 1; \ | |
737 | fixed_regs[21] = call_used_regs[21] = 1; \ | |
738 | fixed_regs[22] = call_used_regs[22] = 1; \ | |
739 | fixed_regs[23] = call_used_regs[23] = 1; \ | |
740 | fixed_regs[26] = call_used_regs[26] = 1; \ | |
741 | fixed_regs[27] = call_used_regs[27] = 1; \ | |
742 | fixed_regs[30] = call_used_regs[30] = 1; \ | |
743 | } \ | |
516a2dfd | 744 | SUBTARGET_CONDITIONAL_REGISTER_USAGE \ |
e75b25e7 MM |
745 | } \ |
746 | while (0) | |
747 | ||
b2d8cf33 | 748 | /* This is meant to be redefined in the host dependent files. */ |
516a2dfd JW |
749 | #define SUBTARGET_CONDITIONAL_REGISTER_USAGE |
750 | ||
7be1e523 RK |
751 | /* Show we can debug even without a frame pointer. */ |
752 | #define CAN_DEBUG_WITHOUT_FP | |
753 | \f | |
e75b25e7 MM |
754 | /* Complain about missing specs and predefines that should be defined in each |
755 | of the target tm files to override the defaults. This is mostly a place- | |
756 | holder until I can get each of the files updated [mm]. */ | |
757 | ||
758 | #if defined(OSF_OS) \ | |
759 | || defined(DECSTATION) \ | |
760 | || defined(SGI_TARGET) \ | |
761 | || defined(MIPS_NEWS) \ | |
762 | || defined(MIPS_SYSV) \ | |
59c94430 | 763 | || defined(MIPS_SVR4) \ |
e75b25e7 MM |
764 | || defined(MIPS_BSD43) |
765 | ||
766 | #ifndef CPP_PREDEFINES | |
767 | #error "Define CPP_PREDEFINES in the appropriate tm.h file" | |
768 | #endif | |
769 | ||
e75b25e7 MM |
770 | #ifndef LIB_SPEC |
771 | #error "Define LIB_SPEC in the appropriate tm.h file" | |
772 | #endif | |
773 | ||
774 | #ifndef STARTFILE_SPEC | |
775 | #error "Define STARTFILE_SPEC in the appropriate tm.h file" | |
776 | #endif | |
777 | ||
778 | #ifndef MACHINE_TYPE | |
779 | #error "Define MACHINE_TYPE in the appropriate tm.h file" | |
780 | #endif | |
781 | #endif | |
782 | ||
59c94430 MM |
783 | /* Tell collect what flags to pass to nm. */ |
784 | #ifndef NM_FLAGS | |
2ce3c6c6 | 785 | #define NM_FLAGS "-Bn" |
59c94430 MM |
786 | #endif |
787 | ||
e75b25e7 MM |
788 | \f |
789 | /* Names to predefine in the preprocessor for this target machine. */ | |
790 | ||
791 | #ifndef CPP_PREDEFINES | |
d4099651 | 792 | #define CPP_PREDEFINES "-Dmips -Dunix -Dhost_mips -DMIPSEB -DR3000 -DSYSTYPE_BSD43 \ |
65c42379 | 793 | -D_mips -D_unix -D_host_mips -D_MIPSEB -D_R3000 -D_SYSTYPE_BSD43 \ |
2b57e919 | 794 | -Asystem=unix -Asystem=bsd -Acpu=mips -Amachine=mips" |
e75b25e7 MM |
795 | #endif |
796 | ||
4e88bbcd ILT |
797 | /* Assembler specs. */ |
798 | ||
799 | /* MIPS_AS_ASM_SPEC is passed when using the MIPS assembler rather | |
800 | than gas. */ | |
801 | ||
802 | #define MIPS_AS_ASM_SPEC "\ | |
803 | %{!.s:-nocpp} %{.s: %{cpp} %{nocpp}} \ | |
804 | %{pipe: %e-pipe is not supported.} \ | |
805 | %{K} %(subtarget_mips_as_asm_spec)" | |
806 | ||
807 | /* SUBTARGET_MIPS_AS_ASM_SPEC is passed when using the MIPS assembler | |
808 | rather than gas. It may be overridden by subtargets. */ | |
809 | ||
810 | #ifndef SUBTARGET_MIPS_AS_ASM_SPEC | |
811 | #define SUBTARGET_MIPS_AS_ASM_SPEC "%{v}" | |
812 | #endif | |
813 | ||
814 | /* GAS_ASM_SPEC is passed when using gas, rather than the MIPS | |
815 | assembler. */ | |
816 | ||
7dac2f89 | 817 | #define GAS_ASM_SPEC "%{march=*} %{mtune=*} %{mcpu=*} %{m4650} %{mmad:-m4650} %{m3900} %{v} %{mgp32} %{mgp64}" |
4e88bbcd ILT |
818 | |
819 | /* TARGET_ASM_SPEC is used to select either MIPS_AS_ASM_SPEC or | |
820 | GAS_ASM_SPEC as the default, depending upon the value of | |
821 | TARGET_DEFAULT. */ | |
e75b25e7 | 822 | |
bb98bc58 JW |
823 | #if ((TARGET_CPU_DEFAULT | TARGET_DEFAULT) & MASK_GAS) != 0 |
824 | /* GAS */ | |
bb98bc58 | 825 | |
4e88bbcd ILT |
826 | #define TARGET_ASM_SPEC "\ |
827 | %{mmips-as: %(mips_as_asm_spec)} \ | |
828 | %{!mmips-as: %(gas_asm_spec)}" | |
829 | ||
830 | #else /* not GAS */ | |
831 | ||
832 | #define TARGET_ASM_SPEC "\ | |
833 | %{!mgas: %(mips_as_asm_spec)} \ | |
834 | %{mgas: %(gas_asm_spec)}" | |
835 | ||
836 | #endif /* not GAS */ | |
837 | ||
838 | /* SUBTARGET_ASM_OPTIMIZING_SPEC handles passing optimization options | |
839 | to the assembler. It may be overridden by subtargets. */ | |
840 | #ifndef SUBTARGET_ASM_OPTIMIZING_SPEC | |
841 | #define SUBTARGET_ASM_OPTIMIZING_SPEC "\ | |
bb98bc58 | 842 | %{noasmopt:-O0} \ |
4e88bbcd ILT |
843 | %{!noasmopt:%{O:-O2} %{O1:-O2} %{O2:-O2} %{O3:-O3}}" |
844 | #endif | |
845 | ||
846 | /* SUBTARGET_ASM_DEBUGGING_SPEC handles passing debugging options to | |
847 | the assembler. It may be overridden by subtargets. */ | |
848 | #ifndef SUBTARGET_ASM_DEBUGGING_SPEC | |
849 | #define SUBTARGET_ASM_DEBUGGING_SPEC "\ | |
bb98bc58 JW |
850 | %{g} %{g0} %{g1} %{g2} %{g3} \ |
851 | %{ggdb:-g} %{ggdb0:-g0} %{ggdb1:-g1} %{ggdb2:-g2} %{ggdb3:-g3} \ | |
852 | %{gstabs:-g} %{gstabs0:-g0} %{gstabs1:-g1} %{gstabs2:-g2} %{gstabs3:-g3} \ | |
853 | %{gstabs+:-g} %{gstabs+0:-g0} %{gstabs+1:-g1} %{gstabs+2:-g2} %{gstabs+3:-g3} \ | |
4e88bbcd ILT |
854 | %{gcoff:-g} %{gcoff0:-g0} %{gcoff1:-g1} %{gcoff2:-g2} %{gcoff3:-g3}" |
855 | #endif | |
bb98bc58 | 856 | |
4e88bbcd ILT |
857 | /* SUBTARGET_ASM_SPEC is always passed to the assembler. It may be |
858 | overridden by subtargets. */ | |
859 | ||
860 | #ifndef SUBTARGET_ASM_SPEC | |
861 | #define SUBTARGET_ASM_SPEC "" | |
bb98bc58 | 862 | #endif |
4e88bbcd ILT |
863 | |
864 | /* ASM_SPEC is the set of arguments to pass to the assembler. */ | |
865 | ||
b2bcb32d | 866 | #undef ASM_SPEC |
4e88bbcd | 867 | #define ASM_SPEC "\ |
120dc6cd | 868 | %{!membedded-pic:%{G*}} %(endian_spec) %{mips1} %{mips2} %{mips3} %{mips4} \ |
2bcb2ab3 | 869 | %{mips16:%{!mno-mips16:-mips16}} %{mno-mips16:-no-mips16} \ |
4e88bbcd ILT |
870 | %(subtarget_asm_optimizing_spec) \ |
871 | %(subtarget_asm_debugging_spec) \ | |
872 | %{membedded-pic} \ | |
1e387156 | 873 | %{mfix7000} \ |
4e88bbcd ILT |
874 | %{mabi=32:-32}%{mabi=o32:-32}%{mabi=n32:-n32}%{mabi=64:-64}%{mabi=n64:-64} \ |
875 | %(target_asm_spec) \ | |
876 | %(subtarget_asm_spec)" | |
e75b25e7 MM |
877 | |
878 | /* Specify to run a post-processor, mips-tfile after the assembler | |
879 | has run to stuff the mips debug information into the object file. | |
880 | This is needed because the $#!%^ MIPS assembler provides no way | |
a813fadf MM |
881 | of specifying such information in the assembly file. If we are |
882 | cross compiling, disable mips-tfile unless the user specifies | |
883 | -mmips-tfile. */ | |
e75b25e7 MM |
884 | |
885 | #ifndef ASM_FINAL_SPEC | |
bb98bc58 JW |
886 | #if ((TARGET_CPU_DEFAULT | TARGET_DEFAULT) & MASK_GAS) != 0 |
887 | /* GAS */ | |
31c714e3 | 888 | #define ASM_FINAL_SPEC "\ |
149e4e00 | 889 | %{mmips-as: %{!mno-mips-tfile: \ |
31c714e3 MM |
890 | \n mips-tfile %{v*: -v} \ |
891 | %{K: -I %b.o~} \ | |
892 | %{!K: %{save-temps: -I %b.o~}} \ | |
ab78d4a8 | 893 | %{c:%W{o*}%{!o*:-o %b.o}}%{!c:-o %U.o} \ |
31c714e3 | 894 | %{.s:%i} %{!.s:%g.s}}}" |
a813fadf | 895 | |
bb98bc58 JW |
896 | #else |
897 | /* not GAS */ | |
a813fadf | 898 | #define ASM_FINAL_SPEC "\ |
149e4e00 | 899 | %{!mgas: %{!mno-mips-tfile: \ |
a813fadf MM |
900 | \n mips-tfile %{v*: -v} \ |
901 | %{K: -I %b.o~} \ | |
902 | %{!K: %{save-temps: -I %b.o~}} \ | |
903 | %{c:%W{o*}%{!o*:-o %b.o}}%{!c:-o %U.o} \ | |
904 | %{.s:%i} %{!.s:%g.s}}}" | |
905 | ||
bb98bc58 | 906 | #endif |
a813fadf | 907 | #endif /* ASM_FINAL_SPEC */ |
e75b25e7 MM |
908 | |
909 | /* Redefinition of libraries used. Mips doesn't support normal | |
910 | UNIX style profiling via calling _mcount. It does offer | |
911 | profiling that samples the PC, so do what we can... */ | |
912 | ||
913 | #ifndef LIB_SPEC | |
914 | #define LIB_SPEC "%{pg:-lprof1} %{p:-lprof1} -lc" | |
915 | #endif | |
916 | ||
31c714e3 | 917 | /* Extra switches sometimes passed to the linker. */ |
bb98bc58 JW |
918 | /* ??? The bestGnum will never be passed to the linker, because the gcc driver |
919 | will interpret it as a -b option. */ | |
e75b25e7 MM |
920 | |
921 | #ifndef LINK_SPEC | |
31c714e3 | 922 | #define LINK_SPEC "\ |
120dc6cd MR |
923 | %(endian_spec) \ |
924 | %{G*} %{mips1} %{mips2} %{mips3} %{mips4} \ | |
925 | %{bestGnum} %{shared} %{non_shared}" | |
bb98bc58 | 926 | #endif /* LINK_SPEC defined */ |
e75b25e7 MM |
927 | |
928 | /* Specs for the compiler proper */ | |
929 | ||
c9db96ce JR |
930 | /* SUBTARGET_CC1_SPEC is passed to the compiler proper. It may be |
931 | overridden by subtargets. */ | |
932 | #ifndef SUBTARGET_CC1_SPEC | |
933 | #define SUBTARGET_CC1_SPEC "" | |
934 | #endif | |
935 | ||
7dac2f89 EC |
936 | /* Deal with historic options. */ |
937 | #ifndef CC1_CPU_SPEC | |
938 | #define CC1_CPU_SPEC "\ | |
939 | %{!mcpu*: \ | |
940 | %{m3900:-march=r3900 -mips1 -mfp32 -mgp32 \ | |
941 | %n`-m3900' is deprecated. Use `-march=r3900' instead.\n} \ | |
942 | %{m4650:-march=r4650 -mmad -msingle-float \ | |
943 | %n`-m4650' is deprecated. Use `-march=r4650' instead.\n}}" | |
944 | #endif | |
945 | ||
c9db96ce JR |
946 | /* CC1_SPEC is the set of arguments to pass to the compiler proper. */ |
947 | ||
e75b25e7 | 948 | #ifndef CC1_SPEC |
31c714e3 | 949 | #define CC1_SPEC "\ |
31c714e3 | 950 | %{gline:%{!g:%{!g0:%{!g1:%{!g2: -g1}}}}} \ |
7e99e494 | 951 | %{mips1:-mfp32 -mgp32} %{mips2:-mfp32 -mgp32}\ |
46299de9 | 952 | %{mips3:%{!msingle-float:%{!m4650:-mfp64}} -mgp64} \ |
516a2dfd | 953 | %{mips4:%{!msingle-float:%{!m4650:-mfp64}} -mgp64} \ |
46299de9 ILT |
954 | %{mfp64:%{msingle-float:%emay not use both -mfp64 and -msingle-float}} \ |
955 | %{mfp64:%{m4650:%emay not use both -mfp64 and -m4650}} \ | |
3ce1ba83 | 956 | %{mint64|mlong64|mlong32:-mexplicit-type-size }\ |
96abdcb1 | 957 | %{G*} %{EB:-meb} %{EL:-mel} %{EB:%{EL:%emay not use both -EB and -EL}} \ |
31c714e3 MM |
958 | %{pic-none: -mno-half-pic} \ |
959 | %{pic-lib: -mhalf-pic} \ | |
960 | %{pic-extern: -mhalf-pic} \ | |
961 | %{pic-calls: -mhalf-pic} \ | |
c9db96ce | 962 | %{save-temps: } \ |
7dac2f89 EC |
963 | %(subtarget_cc1_spec) \ |
964 | %(cc1_cpu_spec)" | |
e75b25e7 MM |
965 | #endif |
966 | ||
4e88bbcd ILT |
967 | /* Preprocessor specs. */ |
968 | ||
969 | /* SUBTARGET_CPP_SIZE_SPEC defines SIZE_TYPE and PTRDIFF_TYPE. It may | |
970 | be overridden by subtargets. */ | |
971 | ||
972 | #ifndef SUBTARGET_CPP_SIZE_SPEC | |
973 | #define SUBTARGET_CPP_SIZE_SPEC "\ | |
3ce1ba83 | 974 | %{mlong64:%{!mips1:%{!mips2:-D__SIZE_TYPE__=long\\ unsigned\\ int -D__PTRDIFF_TYPE__=long\\ int}}} \ |
4e88bbcd ILT |
975 | %{!mlong64:-D__SIZE_TYPE__=unsigned\\ int -D__PTRDIFF_TYPE__=int}" |
976 | #endif | |
977 | ||
978 | /* SUBTARGET_CPP_SPEC is passed to the preprocessor. It may be | |
979 | overridden by subtargets. */ | |
980 | #ifndef SUBTARGET_CPP_SPEC | |
981 | #define SUBTARGET_CPP_SPEC "" | |
982 | #endif | |
983 | ||
4eb66248 JL |
984 | /* If we're using 64bit longs, then we have to define __LONG_MAX__ |
985 | correctly. Similarly for 64bit ints and __INT_MAX__. */ | |
986 | #ifndef LONG_MAX_SPEC | |
987 | #if ((TARGET_DEFAULT | TARGET_CPU_DEFAULT) & MASK_LONG64) | |
3ce1ba83 | 988 | #define LONG_MAX_SPEC "%{!mlong32:-D__LONG_MAX__=9223372036854775807L}" |
4eb66248 JL |
989 | #else |
990 | #define LONG_MAX_SPEC "%{mlong64:-D__LONG_MAX__=9223372036854775807L}" | |
991 | #endif | |
992 | #endif | |
993 | ||
64b172fe RO |
994 | /* For C++ we need to ensure that _LANGUAGE_C_PLUS_PLUS is defined independent |
995 | of the source file extension. */ | |
b2bcb32d | 996 | #undef CPLUSPLUS_CPP_SPEC |
64b172fe RO |
997 | #define CPLUSPLUS_CPP_SPEC "\ |
998 | -D__LANGUAGE_C_PLUS_PLUS -D_LANGUAGE_C_PLUS_PLUS \ | |
999 | %(cpp) \ | |
1000 | " | |
4e88bbcd | 1001 | /* CPP_SPEC is the set of arguments to pass to the preprocessor. */ |
e75b25e7 MM |
1002 | |
1003 | #ifndef CPP_SPEC | |
31c714e3 | 1004 | #define CPP_SPEC "\ |
0002d808 | 1005 | %{.m: -D__LANGUAGE_OBJECTIVE_C -D_LANGUAGE_OBJECTIVE_C -D__LANGUAGE_C -D_LANGUAGE_C} \ |
64b172fe RO |
1006 | %{.S|.s: -D__LANGUAGE_ASSEMBLY -D_LANGUAGE_ASSEMBLY %{!ansi:-DLANGUAGE_ASSEMBLY}} \ |
1007 | %{!.S: %{!.s: %{!.cc: %{!.cxx: %{!.cpp: %{!.cp: %{!.c++: %{!.C: %{!.m: -D__LANGUAGE_C -D_LANGUAGE_C %{!ansi:-DLANGUAGE_C}}}}}}}}}} \ | |
4e88bbcd | 1008 | %(subtarget_cpp_size_spec) \ |
192616a4 RK |
1009 | %{mips3:-U__mips -D__mips=3 -D__mips64} \ |
1010 | %{mips4:-U__mips -D__mips=4 -D__mips64} \ | |
1011 | %{mgp32:-U__mips64} %{mgp64:-D__mips64} \ | |
54efdaa4 JW |
1012 | %{msingle-float:%{!msoft-float:-D__mips_single_float}} \ |
1013 | %{m4650:%{!msoft-float:-D__mips_single_float}} \ | |
293a36eb ILT |
1014 | %{msoft-float:-D__mips_soft_float} \ |
1015 | %{mabi=eabi:-D__mips_eabi} \ | |
2bcb2ab3 | 1016 | %{mips16:%{!mno-mips16:-D__mips16}} \ |
96abdcb1 | 1017 | %{EB:-UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__ -D_MIPSEB -D__MIPSEB -D__MIPSEB__ %{!ansi:-DMIPSEB}} \ |
4e88bbcd | 1018 | %{EL:-UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__ -D_MIPSEL -D__MIPSEL -D__MIPSEL__ %{!ansi:-DMIPSEL}} \ |
4eb66248 | 1019 | %(long_max_spec) \ |
4e88bbcd ILT |
1020 | %(subtarget_cpp_spec) " |
1021 | #endif | |
1022 | ||
1023 | /* This macro defines names of additional specifications to put in the specs | |
1024 | that can be used in various specifications like CC1_SPEC. Its definition | |
1025 | is an initializer with a subgrouping for each command option. | |
1026 | ||
1027 | Each subgrouping contains a string constant, that defines the | |
1028 | specification name, and a string constant that used by the GNU CC driver | |
1029 | program. | |
1030 | ||
1031 | Do not define this macro if it does not need to do anything. */ | |
1032 | ||
1033 | #define EXTRA_SPECS \ | |
829245be | 1034 | { "subtarget_cc1_spec", SUBTARGET_CC1_SPEC }, \ |
7a38df19 | 1035 | { "cc1_cpu_spec", CC1_CPU_SPEC}, \ |
829245be KG |
1036 | { "subtarget_cpp_spec", SUBTARGET_CPP_SPEC }, \ |
1037 | { "subtarget_cpp_size_spec", SUBTARGET_CPP_SIZE_SPEC }, \ | |
1038 | { "long_max_spec", LONG_MAX_SPEC }, \ | |
1039 | { "mips_as_asm_spec", MIPS_AS_ASM_SPEC }, \ | |
1040 | { "gas_asm_spec", GAS_ASM_SPEC }, \ | |
1041 | { "target_asm_spec", TARGET_ASM_SPEC }, \ | |
1042 | { "subtarget_mips_as_asm_spec", SUBTARGET_MIPS_AS_ASM_SPEC }, \ | |
1043 | { "subtarget_asm_optimizing_spec", SUBTARGET_ASM_OPTIMIZING_SPEC }, \ | |
1044 | { "subtarget_asm_debugging_spec", SUBTARGET_ASM_DEBUGGING_SPEC }, \ | |
1045 | { "subtarget_asm_spec", SUBTARGET_ASM_SPEC }, \ | |
120dc6cd | 1046 | { "endian_spec", ENDIAN_SPEC }, \ |
4e88bbcd ILT |
1047 | SUBTARGET_EXTRA_SPECS |
1048 | ||
1049 | #ifndef SUBTARGET_EXTRA_SPECS | |
1050 | #define SUBTARGET_EXTRA_SPECS | |
e75b25e7 MM |
1051 | #endif |
1052 | ||
1053 | /* If defined, this macro is an additional prefix to try after | |
1054 | `STANDARD_EXEC_PREFIX'. */ | |
1055 | ||
1056 | #ifndef MD_EXEC_PREFIX | |
31c714e3 | 1057 | #define MD_EXEC_PREFIX "/usr/lib/cmplrs/cc/" |
e75b25e7 MM |
1058 | #endif |
1059 | ||
59c94430 MM |
1060 | #ifndef MD_STARTFILE_PREFIX |
1061 | #define MD_STARTFILE_PREFIX "/usr/lib/cmplrs/cc/" | |
1062 | #endif | |
1063 | ||
e75b25e7 MM |
1064 | \f |
1065 | /* Print subsidiary information on the compiler version in use. */ | |
1066 | ||
42dee4c7 | 1067 | #define MIPS_VERSION "[AL 1.1, MM 40]" |
e75b25e7 MM |
1068 | |
1069 | #ifndef MACHINE_TYPE | |
1070 | #define MACHINE_TYPE "BSD Mips" | |
1071 | #endif | |
1072 | ||
1073 | #ifndef TARGET_VERSION_INTERNAL | |
1074 | #define TARGET_VERSION_INTERNAL(STREAM) \ | |
1075 | fprintf (STREAM, " %s %s", MIPS_VERSION, MACHINE_TYPE) | |
1076 | #endif | |
1077 | ||
1078 | #ifndef TARGET_VERSION | |
1079 | #define TARGET_VERSION TARGET_VERSION_INTERNAL (stderr) | |
1080 | #endif | |
1081 | ||
1082 | \f | |
1083 | #define SDB_DEBUGGING_INFO /* generate info for mips-tfile */ | |
1084 | #define DBX_DEBUGGING_INFO /* generate stabs (OSF/rose) */ | |
1085 | #define MIPS_DEBUGGING_INFO /* MIPS specific debugging info */ | |
1086 | ||
1087 | #ifndef PREFERRED_DEBUGGING_TYPE /* assume SDB_DEBUGGING_INFO */ | |
fe0986b4 | 1088 | #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG |
e75b25e7 MM |
1089 | #endif |
1090 | ||
59c94430 MM |
1091 | /* By default, turn on GDB extensions. */ |
1092 | #define DEFAULT_GDB_EXTENSIONS 1 | |
1093 | ||
e75b25e7 MM |
1094 | /* If we are passing smuggling stabs through the MIPS ECOFF object |
1095 | format, put a comment in front of the .stab<x> operation so | |
1096 | that the MIPS assembler does not choke. The mips-tfile program | |
1097 | will correctly put the stab into the object file. */ | |
1098 | ||
78d057d8 HPN |
1099 | #define ASM_STABS_OP ((TARGET_GAS) ? "\t.stabs\t" : " #.stabs\t") |
1100 | #define ASM_STABN_OP ((TARGET_GAS) ? "\t.stabn\t" : " #.stabn\t") | |
1101 | #define ASM_STABD_OP ((TARGET_GAS) ? "\t.stabd\t" : " #.stabd\t") | |
e75b25e7 | 1102 | |
6ae1498b JW |
1103 | /* Local compiler-generated symbols must have a prefix that the assembler |
1104 | understands. By default, this is $, although some targets (e.g., | |
1105 | NetBSD-ELF) need to override this. */ | |
1106 | ||
1107 | #ifndef LOCAL_LABEL_PREFIX | |
1108 | #define LOCAL_LABEL_PREFIX "$" | |
1109 | #endif | |
1110 | ||
1111 | /* By default on the mips, external symbols do not have an underscore | |
1112 | prepended, but some targets (e.g., NetBSD) require this. */ | |
1113 | ||
1114 | #ifndef USER_LABEL_PREFIX | |
1115 | #define USER_LABEL_PREFIX "" | |
1116 | #endif | |
1117 | ||
e75b25e7 MM |
1118 | /* Forward references to tags are allowed. */ |
1119 | #define SDB_ALLOW_FORWARD_REFERENCES | |
1120 | ||
1121 | /* Unknown tags are also allowed. */ | |
1122 | #define SDB_ALLOW_UNKNOWN_REFERENCES | |
1123 | ||
1124 | /* On Sun 4, this limit is 2048. We use 1500 to be safe, | |
1125 | since the length can run past this up to a continuation point. */ | |
44404b8b | 1126 | #undef DBX_CONTIN_LENGTH |
e75b25e7 MM |
1127 | #define DBX_CONTIN_LENGTH 1500 |
1128 | ||
e75b25e7 MM |
1129 | /* How to renumber registers for dbx and gdb. */ |
1130 | #define DBX_REGISTER_NUMBER(REGNO) mips_dbx_regno[ (REGNO) ] | |
1131 | ||
c8cc5c4a | 1132 | /* The mapping from gcc register number to DWARF 2 CFA column number. |
0021b564 JM |
1133 | This mapping does not allow for tracking register 0, since SGI's broken |
1134 | dwarf reader thinks column 0 is used for the frame address, but since | |
1135 | register 0 is fixed this is not a problem. */ | |
469ac993 | 1136 | #define DWARF_FRAME_REGNUM(REG) \ |
0021b564 | 1137 | (REG == GP_REG_FIRST + 31 ? DWARF_FRAME_RETURN_COLUMN : REG) |
c8cc5c4a JM |
1138 | |
1139 | /* The DWARF 2 CFA column which tracks the return address. */ | |
1140 | #define DWARF_FRAME_RETURN_COLUMN (FP_REG_LAST + 1) | |
e75b25e7 | 1141 | |
469ac993 | 1142 | /* Before the prologue, RA lives in r31. */ |
c5c76735 | 1143 | #define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (VOIDmode, GP_REG_FIRST + 31) |
469ac993 | 1144 | |
9e800206 RH |
1145 | /* Describe how we implement __builtin_eh_return. */ |
1146 | #define EH_RETURN_DATA_REGNO(N) ((N) < 4 ? (N) + GP_ARG_FIRST : INVALID_REGNUM) | |
1147 | #define EH_RETURN_STACKADJ_RTX gen_rtx_REG (Pmode, GP_REG_FIRST + 3) | |
1148 | ||
7dac2f89 | 1149 | /* Offsets recorded in opcodes are a multiple of this alignment factor. |
b3276c7a GK |
1150 | The default for this in 64-bit mode is 8, which causes problems with |
1151 | SFmode register saves. */ | |
1152 | #define DWARF_CIE_DATA_ALIGNMENT 4 | |
1153 | ||
e75b25e7 MM |
1154 | /* Overrides for the COFF debug format. */ |
1155 | #define PUT_SDB_SCL(a) \ | |
1156 | do { \ | |
1157 | extern FILE *asm_out_text_file; \ | |
1158 | fprintf (asm_out_text_file, "\t.scl\t%d;", (a)); \ | |
1159 | } while (0) | |
1160 | ||
1161 | #define PUT_SDB_INT_VAL(a) \ | |
1162 | do { \ | |
1163 | extern FILE *asm_out_text_file; \ | |
1164 | fprintf (asm_out_text_file, "\t.val\t%d;", (a)); \ | |
1165 | } while (0) | |
1166 | ||
1167 | #define PUT_SDB_VAL(a) \ | |
1168 | do { \ | |
1169 | extern FILE *asm_out_text_file; \ | |
1170 | fputs ("\t.val\t", asm_out_text_file); \ | |
1171 | output_addr_const (asm_out_text_file, (a)); \ | |
1172 | fputc (';', asm_out_text_file); \ | |
1173 | } while (0) | |
1174 | ||
1175 | #define PUT_SDB_DEF(a) \ | |
1176 | do { \ | |
1177 | extern FILE *asm_out_text_file; \ | |
b82b0773 MM |
1178 | fprintf (asm_out_text_file, "\t%s.def\t", \ |
1179 | (TARGET_GAS) ? "" : "#"); \ | |
e75b25e7 MM |
1180 | ASM_OUTPUT_LABELREF (asm_out_text_file, a); \ |
1181 | fputc (';', asm_out_text_file); \ | |
1182 | } while (0) | |
1183 | ||
1184 | #define PUT_SDB_PLAIN_DEF(a) \ | |
1185 | do { \ | |
1186 | extern FILE *asm_out_text_file; \ | |
b82b0773 MM |
1187 | fprintf (asm_out_text_file, "\t%s.def\t.%s;", \ |
1188 | (TARGET_GAS) ? "" : "#", (a)); \ | |
e75b25e7 MM |
1189 | } while (0) |
1190 | ||
1191 | #define PUT_SDB_ENDEF \ | |
1192 | do { \ | |
1193 | extern FILE *asm_out_text_file; \ | |
1194 | fprintf (asm_out_text_file, "\t.endef\n"); \ | |
1195 | } while (0) | |
1196 | ||
1197 | #define PUT_SDB_TYPE(a) \ | |
1198 | do { \ | |
1199 | extern FILE *asm_out_text_file; \ | |
1200 | fprintf (asm_out_text_file, "\t.type\t0x%x;", (a)); \ | |
1201 | } while (0) | |
1202 | ||
1203 | #define PUT_SDB_SIZE(a) \ | |
1204 | do { \ | |
1205 | extern FILE *asm_out_text_file; \ | |
1206 | fprintf (asm_out_text_file, "\t.size\t%d;", (a)); \ | |
1207 | } while (0) | |
1208 | ||
1209 | #define PUT_SDB_DIM(a) \ | |
1210 | do { \ | |
1211 | extern FILE *asm_out_text_file; \ | |
1212 | fprintf (asm_out_text_file, "\t.dim\t%d;", (a)); \ | |
1213 | } while (0) | |
1214 | ||
1215 | #ifndef PUT_SDB_START_DIM | |
1216 | #define PUT_SDB_START_DIM \ | |
1217 | do { \ | |
1218 | extern FILE *asm_out_text_file; \ | |
1219 | fprintf (asm_out_text_file, "\t.dim\t"); \ | |
1220 | } while (0) | |
1221 | #endif | |
1222 | ||
1223 | #ifndef PUT_SDB_NEXT_DIM | |
1224 | #define PUT_SDB_NEXT_DIM(a) \ | |
1225 | do { \ | |
1226 | extern FILE *asm_out_text_file; \ | |
1227 | fprintf (asm_out_text_file, "%d,", a); \ | |
1228 | } while (0) | |
1229 | #endif | |
1230 | ||
1231 | #ifndef PUT_SDB_LAST_DIM | |
1232 | #define PUT_SDB_LAST_DIM(a) \ | |
1233 | do { \ | |
1234 | extern FILE *asm_out_text_file; \ | |
1235 | fprintf (asm_out_text_file, "%d;", a); \ | |
1236 | } while (0) | |
1237 | #endif | |
1238 | ||
1239 | #define PUT_SDB_TAG(a) \ | |
1240 | do { \ | |
1241 | extern FILE *asm_out_text_file; \ | |
1242 | fprintf (asm_out_text_file, "\t.tag\t"); \ | |
1243 | ASM_OUTPUT_LABELREF (asm_out_text_file, a); \ | |
1244 | fputc (';', asm_out_text_file); \ | |
1245 | } while (0) | |
1246 | ||
1247 | /* For block start and end, we create labels, so that | |
1248 | later we can figure out where the correct offset is. | |
1249 | The normal .ent/.end serve well enough for functions, | |
1250 | so those are just commented out. */ | |
1251 | ||
1252 | #define PUT_SDB_BLOCK_START(LINE) \ | |
1253 | do { \ | |
1254 | extern FILE *asm_out_text_file; \ | |
1255 | fprintf (asm_out_text_file, \ | |
6ae1498b JW |
1256 | "%sLb%d:\n\t%s.begin\t%sLb%d\t%d\n", \ |
1257 | LOCAL_LABEL_PREFIX, \ | |
e75b25e7 | 1258 | sdb_label_count, \ |
b82b0773 | 1259 | (TARGET_GAS) ? "" : "#", \ |
6ae1498b | 1260 | LOCAL_LABEL_PREFIX, \ |
e75b25e7 MM |
1261 | sdb_label_count, \ |
1262 | (LINE)); \ | |
1263 | sdb_label_count++; \ | |
1264 | } while (0) | |
1265 | ||
1266 | #define PUT_SDB_BLOCK_END(LINE) \ | |
1267 | do { \ | |
1268 | extern FILE *asm_out_text_file; \ | |
1269 | fprintf (asm_out_text_file, \ | |
6ae1498b JW |
1270 | "%sLe%d:\n\t%s.bend\t%sLe%d\t%d\n", \ |
1271 | LOCAL_LABEL_PREFIX, \ | |
e75b25e7 | 1272 | sdb_label_count, \ |
b82b0773 | 1273 | (TARGET_GAS) ? "" : "#", \ |
6ae1498b | 1274 | LOCAL_LABEL_PREFIX, \ |
e75b25e7 MM |
1275 | sdb_label_count, \ |
1276 | (LINE)); \ | |
1277 | sdb_label_count++; \ | |
1278 | } while (0) | |
1279 | ||
1280 | #define PUT_SDB_FUNCTION_START(LINE) | |
1281 | ||
a642a781 RK |
1282 | #define PUT_SDB_FUNCTION_END(LINE) \ |
1283 | do { \ | |
1284 | extern FILE *asm_out_text_file; \ | |
1285 | ASM_OUTPUT_SOURCE_LINE (asm_out_text_file, LINE + sdb_begin_function_line); \ | |
1286 | } while (0) | |
e75b25e7 MM |
1287 | |
1288 | #define PUT_SDB_EPILOGUE_END(NAME) | |
1289 | ||
cc694a81 DE |
1290 | #define PUT_SDB_SRC_FILE(FILENAME) \ |
1291 | do { \ | |
1292 | extern FILE *asm_out_text_file; \ | |
1293 | output_file_directive (asm_out_text_file, (FILENAME)); \ | |
1294 | } while (0) | |
1295 | ||
e75b25e7 MM |
1296 | #define SDB_GENERATE_FAKE(BUFFER, NUMBER) \ |
1297 | sprintf ((BUFFER), ".%dfake", (NUMBER)); | |
1298 | ||
ab78d4a8 MM |
1299 | /* Correct the offset of automatic variables and arguments. Note that |
1300 | the MIPS debug format wants all automatic variables and arguments | |
1301 | to be in terms of the virtual frame pointer (stack pointer before | |
1302 | any adjustment in the function), while the MIPS 3.0 linker wants | |
1303 | the frame pointer to be the stack pointer after the initial | |
1304 | adjustment. */ | |
e75b25e7 | 1305 | |
f5963e61 JL |
1306 | #define DEBUGGER_AUTO_OFFSET(X) \ |
1307 | mips_debugger_offset (X, (HOST_WIDE_INT) 0) | |
1308 | #define DEBUGGER_ARG_OFFSET(OFFSET, X) \ | |
1309 | mips_debugger_offset (X, (HOST_WIDE_INT) OFFSET) | |
31c714e3 MM |
1310 | |
1311 | /* Tell collect that the object format is ECOFF */ | |
1312 | #ifndef OBJECT_FORMAT_ROSE | |
1313 | #define OBJECT_FORMAT_COFF /* Object file looks like COFF */ | |
1314 | #define EXTENDED_COFF /* ECOFF, not normal coff */ | |
1315 | #endif | |
e75b25e7 MM |
1316 | \f |
1317 | /* Target machine storage layout */ | |
1318 | ||
96abdcb1 ILT |
1319 | /* Define in order to support both big and little endian float formats |
1320 | in the same gcc binary. */ | |
1321 | #define REAL_ARITHMETIC | |
1322 | ||
e75b25e7 MM |
1323 | /* Define this if most significant bit is lowest numbered |
1324 | in instructions that operate on numbered bit-fields. | |
1325 | */ | |
4851a75c | 1326 | #define BITS_BIG_ENDIAN 0 |
e75b25e7 MM |
1327 | |
1328 | /* Define this if most significant byte of a word is the lowest numbered. */ | |
96abdcb1 | 1329 | #define BYTES_BIG_ENDIAN (TARGET_BIG_ENDIAN != 0) |
e75b25e7 MM |
1330 | |
1331 | /* Define this if most significant word of a multiword number is the lowest. */ | |
96abdcb1 | 1332 | #define WORDS_BIG_ENDIAN (TARGET_BIG_ENDIAN != 0) |
e75b25e7 | 1333 | |
96abdcb1 ILT |
1334 | /* Define this to set the endianness to use in libgcc2.c, which can |
1335 | not depend on target_flags. */ | |
1336 | #if !defined(MIPSEL) && !defined(__MIPSEL__) | |
1337 | #define LIBGCC2_WORDS_BIG_ENDIAN 1 | |
e75b25e7 | 1338 | #else |
96abdcb1 | 1339 | #define LIBGCC2_WORDS_BIG_ENDIAN 0 |
e75b25e7 MM |
1340 | #endif |
1341 | ||
31c714e3 | 1342 | /* Number of bits in an addressable storage unit */ |
e75b25e7 MM |
1343 | #define BITS_PER_UNIT 8 |
1344 | ||
1345 | /* Width in bits of a "word", which is the contents of a machine register. | |
1346 | Note that this is not necessarily the width of data type `int'; | |
1347 | if using 16-bit ints on a 68000, this would still be 32. | |
1348 | But on a machine with 16-bit registers, this would be 16. */ | |
456f6501 | 1349 | #define BITS_PER_WORD (TARGET_64BIT ? 64 : 32) |
876c09d3 | 1350 | #define MAX_BITS_PER_WORD 64 |
e75b25e7 MM |
1351 | |
1352 | /* Width of a word, in units (bytes). */ | |
456f6501 | 1353 | #define UNITS_PER_WORD (TARGET_64BIT ? 8 : 4) |
ef0e53ce | 1354 | #define MIN_UNITS_PER_WORD 4 |
876c09d3 JW |
1355 | |
1356 | /* For MIPS, width of a floating point register. */ | |
456f6501 | 1357 | #define UNITS_PER_FPREG (TARGET_FLOAT64 ? 8 : 4) |
e75b25e7 MM |
1358 | |
1359 | /* A C expression for the size in bits of the type `int' on the | |
1360 | target machine. If you don't define this, the default is one | |
1361 | word. */ | |
456f6501 | 1362 | #define INT_TYPE_SIZE (TARGET_INT64 ? 64 : 32) |
876c09d3 JW |
1363 | #define MAX_INT_TYPE_SIZE 64 |
1364 | ||
1365 | /* Tell the preprocessor the maximum size of wchar_t. */ | |
1366 | #ifndef MAX_WCHAR_TYPE_SIZE | |
1367 | #ifndef WCHAR_TYPE_SIZE | |
1368 | #define MAX_WCHAR_TYPE_SIZE MAX_INT_TYPE_SIZE | |
1369 | #endif | |
1370 | #endif | |
e75b25e7 MM |
1371 | |
1372 | /* A C expression for the size in bits of the type `short' on the | |
1373 | target machine. If you don't define this, the default is half a | |
1374 | word. (If this would be less than one storage unit, it is | |
1375 | rounded up to one unit.) */ | |
1376 | #define SHORT_TYPE_SIZE 16 | |
1377 | ||
1378 | /* A C expression for the size in bits of the type `long' on the | |
1379 | target machine. If you don't define this, the default is one | |
1380 | word. */ | |
456f6501 | 1381 | #define LONG_TYPE_SIZE (TARGET_LONG64 ? 64 : 32) |
876c09d3 | 1382 | #define MAX_LONG_TYPE_SIZE 64 |
e75b25e7 MM |
1383 | |
1384 | /* A C expression for the size in bits of the type `long long' on the | |
1385 | target machine. If you don't define this, the default is two | |
1386 | words. */ | |
923d630e | 1387 | #define LONG_LONG_TYPE_SIZE 64 |
e75b25e7 MM |
1388 | |
1389 | /* A C expression for the size in bits of the type `char' on the | |
1390 | target machine. If you don't define this, the default is one | |
1391 | quarter of a word. (If this would be less than one storage unit, | |
1392 | it is rounded up to one unit.) */ | |
1393 | #define CHAR_TYPE_SIZE BITS_PER_UNIT | |
1394 | ||
1395 | /* A C expression for the size in bits of the type `float' on the | |
1396 | target machine. If you don't define this, the default is one | |
1397 | word. */ | |
1398 | #define FLOAT_TYPE_SIZE 32 | |
1399 | ||
1400 | /* A C expression for the size in bits of the type `double' on the | |
1401 | target machine. If you don't define this, the default is two | |
1402 | words. */ | |
1403 | #define DOUBLE_TYPE_SIZE 64 | |
1404 | ||
1405 | /* A C expression for the size in bits of the type `long double' on | |
1406 | the target machine. If you don't define this, the default is two | |
1407 | words. */ | |
1408 | #define LONG_DOUBLE_TYPE_SIZE 64 | |
1409 | ||
1410 | /* Width in bits of a pointer. | |
1411 | See also the macro `Pmode' defined below. */ | |
1eeed24e | 1412 | #ifndef POINTER_SIZE |
456f6501 | 1413 | #define POINTER_SIZE (Pmode == DImode ? 64 : 32) |
1eeed24e | 1414 | #endif |
e75b25e7 MM |
1415 | |
1416 | /* Allocation boundary (in *bits*) for storing pointers in memory. */ | |
456f6501 | 1417 | #define POINTER_BOUNDARY (Pmode == DImode ? 64 : 32) |
e75b25e7 MM |
1418 | |
1419 | /* Allocation boundary (in *bits*) for storing arguments in argument list. */ | |
456f6501 | 1420 | #define PARM_BOUNDARY (TARGET_64BIT ? 64 : 32) |
e75b25e7 MM |
1421 | |
1422 | /* Allocation boundary (in *bits*) for the code of a function. */ | |
1423 | #define FUNCTION_BOUNDARY 32 | |
1424 | ||
1425 | /* Alignment of field after `int : 0' in a structure. */ | |
9e95597a | 1426 | #define EMPTY_FIELD_BOUNDARY 32 |
e75b25e7 MM |
1427 | |
1428 | /* Every structure's size must be a multiple of this. */ | |
1429 | /* 8 is observed right on a DECstation and on riscos 4.02. */ | |
1430 | #define STRUCTURE_SIZE_BOUNDARY 8 | |
1431 | ||
1432 | /* There is no point aligning anything to a rounder boundary than this. */ | |
1433 | #define BIGGEST_ALIGNMENT 64 | |
1434 | ||
31c714e3 | 1435 | /* Set this nonzero if move instructions will actually fail to work |
e75b25e7 | 1436 | when given unaligned data. */ |
31c714e3 | 1437 | #define STRICT_ALIGNMENT 1 |
e75b25e7 MM |
1438 | |
1439 | /* Define this if you wish to imitate the way many other C compilers | |
1440 | handle alignment of bitfields and the structures that contain | |
1441 | them. | |
1442 | ||
1443 | The behavior is that the type written for a bitfield (`int', | |
1444 | `short', or other integer type) imposes an alignment for the | |
1445 | entire structure, as if the structure really did contain an | |
1446 | ordinary field of that type. In addition, the bitfield is placed | |
1447 | within the structure so that it would fit within such a field, | |
1448 | not crossing a boundary for it. | |
1449 | ||
1450 | Thus, on most machines, a bitfield whose type is written as `int' | |
1451 | would not cross a four-byte boundary, and would force four-byte | |
1452 | alignment for the whole structure. (The alignment used may not | |
1453 | be four bytes; it is controlled by the other alignment | |
1454 | parameters.) | |
1455 | ||
1456 | If the macro is defined, its definition should be a C expression; | |
1457 | a nonzero value for the expression enables this behavior. */ | |
1458 | ||
1459 | #define PCC_BITFIELD_TYPE_MATTERS 1 | |
1460 | ||
1461 | /* If defined, a C expression to compute the alignment given to a | |
1462 | constant that is being placed in memory. CONSTANT is the constant | |
1463 | and ALIGN is the alignment that the object would ordinarily have. | |
1464 | The value of this macro is used instead of that alignment to align | |
1465 | the object. | |
1466 | ||
1467 | If this macro is not defined, then ALIGN is used. | |
1468 | ||
1469 | The typical use of this macro is to increase alignment for string | |
1470 | constants to be word aligned so that `strcpy' calls that copy | |
1471 | constants can be done inline. */ | |
1472 | ||
1473 | #define CONSTANT_ALIGNMENT(EXP, ALIGN) \ | |
1474 | ((TREE_CODE (EXP) == STRING_CST || TREE_CODE (EXP) == CONSTRUCTOR) \ | |
75131237 | 1475 | && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN)) |
e75b25e7 MM |
1476 | |
1477 | /* If defined, a C expression to compute the alignment for a static | |
1478 | variable. TYPE is the data type, and ALIGN is the alignment that | |
1479 | the object would ordinarily have. The value of this macro is used | |
1480 | instead of that alignment to align the object. | |
1481 | ||
1482 | If this macro is not defined, then ALIGN is used. | |
1483 | ||
1484 | One use of this macro is to increase alignment of medium-size | |
1485 | data to make it all fit in fewer cache lines. Another is to | |
1486 | cause character arrays to be word-aligned so that `strcpy' calls | |
1487 | that copy constants to character arrays can be done inline. */ | |
1488 | ||
1489 | #undef DATA_ALIGNMENT | |
1490 | #define DATA_ALIGNMENT(TYPE, ALIGN) \ | |
1491 | ((((ALIGN) < BITS_PER_WORD) \ | |
1492 | && (TREE_CODE (TYPE) == ARRAY_TYPE \ | |
1493 | || TREE_CODE (TYPE) == UNION_TYPE \ | |
1494 | || TREE_CODE (TYPE) == RECORD_TYPE)) ? BITS_PER_WORD : (ALIGN)) | |
1495 | ||
f5c8ac96 CP |
1496 | |
1497 | /* Force right-alignment for small varargs in 32 bit little_endian mode */ | |
1498 | ||
1499 | #define PAD_VARARGS_DOWN (TARGET_64BIT ? BYTES_BIG_ENDIAN : !BYTES_BIG_ENDIAN) | |
1500 | ||
e75b25e7 MM |
1501 | /* Define this macro if an argument declared as `char' or `short' in a |
1502 | prototype should actually be passed as an `int'. In addition to | |
1503 | avoiding errors in certain cases of mismatch, it also makes for | |
1504 | better code on certain machines. */ | |
1505 | ||
cb560352 | 1506 | #define PROMOTE_PROTOTYPES 1 |
e75b25e7 | 1507 | |
9a63901f RK |
1508 | /* Define if operations between registers always perform the operation |
1509 | on the full register even if a narrower mode is specified. */ | |
1510 | #define WORD_REGISTER_OPERATIONS | |
1511 | ||
1512 | /* Define if loading in MODE, an integral mode narrower than BITS_PER_WORD | |
1513 | will either zero-extend or sign-extend. The value of this macro should | |
1514 | be the code that says which one of the two operations is implicitly | |
7dac2f89 | 1515 | done, NIL if none. |
a872728c JL |
1516 | |
1517 | When in 64 bit mode, mips_move_1word will sign extend SImode and CCmode | |
1518 | moves. All other referces are zero extended. */ | |
1519 | #define LOAD_EXTEND_OP(MODE) \ | |
1520 | (TARGET_64BIT && ((MODE) == SImode || (MODE) == CCmode) \ | |
1521 | ? SIGN_EXTEND : ZERO_EXTEND) | |
2bcb2ab3 GK |
1522 | |
1523 | /* Define this macro if it is advisable to hold scalars in registers | |
7dac2f89 | 1524 | in a wider mode than that declared by the program. In such cases, |
2bcb2ab3 GK |
1525 | the value is constrained to be within the bounds of the declared |
1526 | type, but kept valid in the wider mode. The signedness of the | |
1527 | extension may differ from that of the type. | |
1528 | ||
1529 | We promote any value smaller than SImode up to SImode. We don't | |
1530 | want to promote to DImode when in 64 bit mode, because that would | |
1531 | prevent us from using the faster SImode multiply and divide | |
1532 | instructions. */ | |
1533 | ||
1534 | #define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \ | |
1535 | if (GET_MODE_CLASS (MODE) == MODE_INT \ | |
1536 | && GET_MODE_SIZE (MODE) < 4) \ | |
1537 | (MODE) = SImode; | |
1538 | ||
1539 | /* Define this if function arguments should also be promoted using the above | |
1540 | procedure. */ | |
1541 | ||
1542 | #define PROMOTE_FUNCTION_ARGS | |
1543 | ||
1544 | /* Likewise, if the function return value is promoted. */ | |
1545 | ||
1546 | #define PROMOTE_FUNCTION_RETURN | |
e75b25e7 MM |
1547 | \f |
1548 | /* Standard register usage. */ | |
1549 | ||
1550 | /* Number of actual hardware registers. | |
1551 | The hardware registers are assigned numbers for the compiler | |
1552 | from 0 to just below FIRST_PSEUDO_REGISTER. | |
1553 | All registers that the compiler knows about must be given numbers, | |
1554 | even those that are not normally considered general registers. | |
1555 | ||
225b8835 | 1556 | On the Mips, we have 32 integer registers, 32 floating point |
b8eb88d0 ILT |
1557 | registers, 8 condition code registers, and the special registers |
1558 | hi, lo, hilo, and rap. The 8 condition code registers are only | |
1559 | used if mips_isa >= 4. The hilo register is only used in 64 bit | |
1560 | mode. It represents a 64 bit value stored as two 32 bit values in | |
1561 | the hi and lo registers; this is the result of the mult | |
1562 | instruction. rap is a pointer to the stack where the return | |
1563 | address reg ($31) was stored. This is needed for C++ exception | |
1564 | handling. */ | |
e75b25e7 | 1565 | |
b8eb88d0 | 1566 | #define FIRST_PSEUDO_REGISTER 76 |
e75b25e7 MM |
1567 | |
1568 | /* 1 for registers that have pervasive standard uses | |
1569 | and are not available for the register allocator. | |
1570 | ||
1571 | On the MIPS, see conventions, page D-2 */ | |
1572 | ||
1573 | #define FIXED_REGISTERS \ | |
1574 | { \ | |
1575 | 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ | |
1576 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 1, \ | |
1577 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ | |
1578 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ | |
b8eb88d0 | 1579 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 \ |
e75b25e7 MM |
1580 | } |
1581 | ||
1582 | ||
1583 | /* 1 for registers not available across function calls. | |
1584 | These must include the FIXED_REGISTERS and also any | |
1585 | registers that can be used without being saved. | |
1586 | The latter must include the registers where values are returned | |
1587 | and the register where structure-value addresses are passed. | |
1588 | Aside from that, you can include as many other registers as you like. */ | |
1589 | ||
1590 | #define CALL_USED_REGISTERS \ | |
1591 | { \ | |
1592 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ | |
1593 | 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 1, \ | |
1594 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ | |
1595 | 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ | |
b8eb88d0 | 1596 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 \ |
e75b25e7 MM |
1597 | } |
1598 | ||
1599 | ||
1600 | /* Internal macros to classify a register number as to whether it's a | |
1601 | general purpose register, a floating point register, a | |
516a2dfd | 1602 | multiply/divide register, or a status register. */ |
e75b25e7 MM |
1603 | |
1604 | #define GP_REG_FIRST 0 | |
1605 | #define GP_REG_LAST 31 | |
1606 | #define GP_REG_NUM (GP_REG_LAST - GP_REG_FIRST + 1) | |
1607 | #define GP_DBX_FIRST 0 | |
1608 | ||
1609 | #define FP_REG_FIRST 32 | |
1610 | #define FP_REG_LAST 63 | |
1611 | #define FP_REG_NUM (FP_REG_LAST - FP_REG_FIRST + 1) | |
1612 | #define FP_DBX_FIRST ((write_symbols == DBX_DEBUG) ? 38 : 32) | |
1613 | ||
1614 | #define MD_REG_FIRST 64 | |
225b8835 | 1615 | #define MD_REG_LAST 66 |
e75b25e7 MM |
1616 | #define MD_REG_NUM (MD_REG_LAST - MD_REG_FIRST + 1) |
1617 | ||
225b8835 | 1618 | #define ST_REG_FIRST 67 |
b8eb88d0 | 1619 | #define ST_REG_LAST 74 |
e75b25e7 MM |
1620 | #define ST_REG_NUM (ST_REG_LAST - ST_REG_FIRST + 1) |
1621 | ||
b8eb88d0 | 1622 | #define RAP_REG_NUM 75 |
39dffea3 | 1623 | |
e75b25e7 MM |
1624 | #define AT_REGNUM (GP_REG_FIRST + 1) |
1625 | #define HI_REGNUM (MD_REG_FIRST + 0) | |
1626 | #define LO_REGNUM (MD_REG_FIRST + 1) | |
225b8835 | 1627 | #define HILO_REGNUM (MD_REG_FIRST + 2) |
b8eb88d0 ILT |
1628 | |
1629 | /* FPSW_REGNUM is the single condition code used if mips_isa < 4. If | |
1630 | mips_isa >= 4, it should not be used, and an arbitrary ST_REG | |
1631 | should be used instead. */ | |
e75b25e7 MM |
1632 | #define FPSW_REGNUM ST_REG_FIRST |
1633 | ||
75131237 RK |
1634 | #define GP_REG_P(REGNO) \ |
1635 | ((unsigned int) ((int) (REGNO) - GP_REG_FIRST) < GP_REG_NUM) | |
2bcb2ab3 GK |
1636 | #define M16_REG_P(REGNO) \ |
1637 | (((REGNO) >= 2 && (REGNO) <= 7) || (REGNO) == 16 || (REGNO) == 17) | |
75131237 RK |
1638 | #define FP_REG_P(REGNO) \ |
1639 | ((unsigned int) ((int) (REGNO) - FP_REG_FIRST) < FP_REG_NUM) | |
1640 | #define MD_REG_P(REGNO) \ | |
1641 | ((unsigned int) ((int) (REGNO) - MD_REG_FIRST) < MD_REG_NUM) | |
1642 | #define ST_REG_P(REGNO) \ | |
1643 | ((unsigned int) ((int) (REGNO) - ST_REG_FIRST) < ST_REG_NUM) | |
e75b25e7 | 1644 | |
e75b25e7 MM |
1645 | /* Return number of consecutive hard regs needed starting at reg REGNO |
1646 | to hold something of mode MODE. | |
1647 | This is ordinarily the length in words of a value of mode MODE | |
1648 | but can be less for certain modes in special long registers. | |
1649 | ||
1650 | On the MIPS, all general registers are one word long. Except on | |
1651 | the R4000 with the FR bit set, the floating point uses register | |
956d6950 | 1652 | pairs, with the second register not being allocable. */ |
e75b25e7 MM |
1653 | |
1654 | #define HARD_REGNO_NREGS(REGNO, MODE) \ | |
1655 | (! FP_REG_P (REGNO) \ | |
1656 | ? ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) \ | |
ef9e5f13 | 1657 | : ((GET_MODE_SIZE (MODE) + UNITS_PER_FPREG - 1) / UNITS_PER_FPREG)) |
e75b25e7 MM |
1658 | |
1659 | /* Value is 1 if hard register REGNO can hold a value of machine-mode | |
876c09d3 JW |
1660 | MODE. In 32 bit mode, require that DImode and DFmode be in even |
1661 | registers. For DImode, this makes some of the insns easier to | |
1662 | write, since you don't have to worry about a DImode value in | |
1663 | registers 3 & 4, producing a result in 4 & 5. | |
e75b25e7 MM |
1664 | |
1665 | To make the code simpler HARD_REGNO_MODE_OK now just references an | |
1666 | array built in override_options. Because machmodes.h is not yet | |
1667 | included before this file is processed, the MODE bound can't be | |
1668 | expressed here. */ | |
1669 | ||
1670 | extern char mips_hard_regno_mode_ok[][FIRST_PSEUDO_REGISTER]; | |
1671 | ||
1672 | #define HARD_REGNO_MODE_OK(REGNO, MODE) \ | |
1673 | mips_hard_regno_mode_ok[ (int)(MODE) ][ (REGNO) ] | |
1674 | ||
1675 | /* Value is 1 if it is a good idea to tie two pseudo registers | |
1676 | when one has mode MODE1 and one has mode MODE2. | |
1677 | If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2, | |
1678 | for any hard reg, then this must be 0 for correct output. */ | |
1679 | #define MODES_TIEABLE_P(MODE1, MODE2) \ | |
1680 | ((GET_MODE_CLASS (MODE1) == MODE_FLOAT || \ | |
1681 | GET_MODE_CLASS (MODE1) == MODE_COMPLEX_FLOAT) \ | |
1682 | == (GET_MODE_CLASS (MODE2) == MODE_FLOAT || \ | |
1683 | GET_MODE_CLASS (MODE2) == MODE_COMPLEX_FLOAT)) | |
1684 | ||
1685 | /* MIPS pc is not overloaded on a register. */ | |
1686 | /* #define PC_REGNUM xx */ | |
1687 | ||
1688 | /* Register to use for pushing function arguments. */ | |
0fb5ac6f | 1689 | #define STACK_POINTER_REGNUM (GP_REG_FIRST + 29) |
e75b25e7 | 1690 | |
97116296 ILT |
1691 | /* Offset from the stack pointer to the first available location. Use |
1692 | the default value zero. */ | |
1693 | /* #define STACK_POINTER_OFFSET 0 */ | |
e75b25e7 | 1694 | |
2bcb2ab3 GK |
1695 | /* Base register for access to local variables of the function. We |
1696 | pretend that the frame pointer is $1, and then eliminate it to | |
1697 | HARD_FRAME_POINTER_REGNUM. We can get away with this because $1 is | |
1698 | a fixed register, and will not be used for anything else. */ | |
1699 | #define FRAME_POINTER_REGNUM (GP_REG_FIRST + 1) | |
1700 | ||
0ff83799 MM |
1701 | /* Temporary scratch register for use by the assembler. */ |
1702 | #define ASSEMBLER_SCRATCH_REGNUM (GP_REG_FIRST + 1) | |
1703 | ||
2bcb2ab3 GK |
1704 | /* $30 is not available on the mips16, so we use $17 as the frame |
1705 | pointer. */ | |
1706 | #define HARD_FRAME_POINTER_REGNUM \ | |
1707 | (TARGET_MIPS16 ? GP_REG_FIRST + 17 : GP_REG_FIRST + 30) | |
e75b25e7 MM |
1708 | |
1709 | /* Value should be nonzero if functions must have frame pointers. | |
1710 | Zero means the frame pointer need not be set up (and parms | |
1711 | may be accessed via the stack pointer) in functions that seem suitable. | |
1712 | This is computed in `reload', in reload1.c. */ | |
1713 | #define FRAME_POINTER_REQUIRED (current_function_calls_alloca) | |
1714 | ||
1715 | /* Base register for access to arguments of the function. */ | |
ab78d4a8 | 1716 | #define ARG_POINTER_REGNUM GP_REG_FIRST |
e75b25e7 | 1717 | |
39dffea3 JW |
1718 | /* Fake register that holds the address on the stack of the |
1719 | current function's return address. */ | |
1720 | #define RETURN_ADDRESS_POINTER_REGNUM RAP_REG_NUM | |
1721 | ||
e75b25e7 | 1722 | /* Register in which static-chain is passed to a function. */ |
0fb5ac6f | 1723 | #define STATIC_CHAIN_REGNUM (GP_REG_FIRST + 2) |
e75b25e7 | 1724 | |
1154b096 MM |
1725 | /* If the structure value address is passed in a register, then |
1726 | `STRUCT_VALUE_REGNUM' should be the number of that register. */ | |
1727 | /* #define STRUCT_VALUE_REGNUM (GP_REG_FIRST + 4) */ | |
1728 | ||
1729 | /* If the structure value address is not passed in a register, define | |
1730 | `STRUCT_VALUE' as an expression returning an RTX for the place | |
1731 | where the address is passed. If it returns 0, the address is | |
1732 | passed as an "invisible" first argument. */ | |
f58cfbfb | 1733 | #define STRUCT_VALUE 0 |
e75b25e7 MM |
1734 | |
1735 | /* Mips registers used in prologue/epilogue code when the stack frame | |
1736 | is larger than 32K bytes. These registers must come from the | |
1737 | scratch register set, and not used for passing and returning | |
1738 | arguments and any other information used in the calling sequence | |
516a2dfd JW |
1739 | (such as pic). Must start at 12, since t0/t3 are parameter passing |
1740 | registers in the 64 bit ABI. */ | |
7bea35e7 | 1741 | |
516a2dfd JW |
1742 | #define MIPS_TEMP1_REGNUM (GP_REG_FIRST + 12) |
1743 | #define MIPS_TEMP2_REGNUM (GP_REG_FIRST + 13) | |
e75b25e7 MM |
1744 | |
1745 | /* Define this macro if it is as good or better to call a constant | |
1746 | function address than to call an address kept in a register. */ | |
1747 | #define NO_FUNCTION_CSE 1 | |
1748 | ||
1749 | /* Define this macro if it is as good or better for a function to | |
1750 | call itself with an explicit address than to call an address | |
1751 | kept in a register. */ | |
1752 | #define NO_RECURSIVE_FUNCTION_CSE 1 | |
1753 | ||
1754 | /* The register number of the register used to address a table of | |
1755 | static data addresses in memory. In some cases this register is | |
7dac2f89 | 1756 | defined by a processor's "application binary interface" (ABI). |
e75b25e7 MM |
1757 | When this macro is defined, RTL is generated for this register |
1758 | once, as with the stack pointer and frame pointer registers. If | |
1759 | this macro is not defined, it is up to the machine-dependent | |
1760 | files to allocate such a register (if necessary). */ | |
0fb5ac6f | 1761 | #define PIC_OFFSET_TABLE_REGNUM (GP_REG_FIRST + 28) |
e75b25e7 | 1762 | |
24e214e3 JW |
1763 | #define PIC_FUNCTION_ADDR_REGNUM (GP_REG_FIRST + 25) |
1764 | ||
77b597df JW |
1765 | /* Initialize embedded_pic_fnaddr_rtx before RTL generation for |
1766 | each function. We used to do this in FINALIZE_PIC, but FINALIZE_PIC | |
1767 | isn't always called for static inline functions. */ | |
2bcb2ab3 GK |
1768 | #define INIT_EXPANDERS \ |
1769 | do { \ | |
1770 | embedded_pic_fnaddr_rtx = NULL; \ | |
1771 | mips16_gp_pseudo_rtx = NULL; \ | |
1772 | } while (0) | |
e75b25e7 MM |
1773 | \f |
1774 | /* Define the classes of registers for register constraints in the | |
1775 | machine description. Also define ranges of constants. | |
1776 | ||
1777 | One of the classes must always be named ALL_REGS and include all hard regs. | |
1778 | If there is more than one class, another class must be named NO_REGS | |
1779 | and contain no registers. | |
1780 | ||
1781 | The name GENERAL_REGS must be the name of a class (or an alias for | |
1782 | another name such as ALL_REGS). This is the class of registers | |
1783 | that is allowed by "g" or "r" in a register constraint. | |
1784 | Also, registers outside this class are allocated only when | |
1785 | instructions express preferences for them. | |
1786 | ||
1787 | The classes must be numbered in nondecreasing order; that is, | |
1788 | a larger-numbered class must never be contained completely | |
1789 | in a smaller-numbered class. | |
1790 | ||
1791 | For any two classes, it is very desirable that there be another | |
1792 | class that represents their union. */ | |
1793 | ||
1794 | enum reg_class | |
1795 | { | |
1796 | NO_REGS, /* no registers in set */ | |
2bcb2ab3 GK |
1797 | M16_NA_REGS, /* mips16 regs not used to pass args */ |
1798 | M16_REGS, /* mips16 directly accessible registers */ | |
1799 | T_REG, /* mips16 T register ($24) */ | |
1800 | M16_T_REGS, /* mips16 registers plus T register */ | |
e75b25e7 MM |
1801 | GR_REGS, /* integer registers */ |
1802 | FP_REGS, /* floating point registers */ | |
1803 | HI_REG, /* hi register */ | |
1804 | LO_REG, /* lo register */ | |
225b8835 | 1805 | HILO_REG, /* hilo register pair for 64 bit mode mult */ |
e75b25e7 | 1806 | MD_REGS, /* multiply/divide registers (hi/lo) */ |
e4f5c5d6 KR |
1807 | HI_AND_GR_REGS, /* union classes */ |
1808 | LO_AND_GR_REGS, | |
1809 | HILO_AND_GR_REGS, | |
e75b25e7 MM |
1810 | ST_REGS, /* status registers (fp status) */ |
1811 | ALL_REGS, /* all registers */ | |
1812 | LIM_REG_CLASSES /* max value + 1 */ | |
1813 | }; | |
1814 | ||
1815 | #define N_REG_CLASSES (int) LIM_REG_CLASSES | |
1816 | ||
1817 | #define GENERAL_REGS GR_REGS | |
1818 | ||
1819 | /* An initializer containing the names of the register classes as C | |
1820 | string constants. These names are used in writing some of the | |
1821 | debugging dumps. */ | |
1822 | ||
1823 | #define REG_CLASS_NAMES \ | |
1824 | { \ | |
1825 | "NO_REGS", \ | |
2bcb2ab3 GK |
1826 | "M16_NA_REGS", \ |
1827 | "M16_REGS", \ | |
1828 | "T_REG", \ | |
1829 | "M16_T_REGS", \ | |
e75b25e7 MM |
1830 | "GR_REGS", \ |
1831 | "FP_REGS", \ | |
1832 | "HI_REG", \ | |
1833 | "LO_REG", \ | |
225b8835 | 1834 | "HILO_REG", \ |
e75b25e7 | 1835 | "MD_REGS", \ |
e4f5c5d6 KR |
1836 | "HI_AND_GR_REGS", \ |
1837 | "LO_AND_GR_REGS", \ | |
1838 | "HILO_AND_GR_REGS", \ | |
e75b25e7 MM |
1839 | "ST_REGS", \ |
1840 | "ALL_REGS" \ | |
1841 | } | |
1842 | ||
1843 | /* An initializer containing the contents of the register classes, | |
1844 | as integers which are bit masks. The Nth integer specifies the | |
1845 | contents of class N. The way the integer MASK is interpreted is | |
1846 | that register R is in the class if `MASK & (1 << R)' is 1. | |
1847 | ||
1848 | When the machine has more than 32 registers, an integer does not | |
1849 | suffice. Then the integers are replaced by sub-initializers, | |
1850 | braced groupings containing several integers. Each | |
1851 | sub-initializer must be suitable as an initializer for the type | |
1852 | `HARD_REG_SET' which is defined in `hard-reg-set.h'. */ | |
1853 | ||
1854 | #define REG_CLASS_CONTENTS \ | |
1855 | { \ | |
1856 | { 0x00000000, 0x00000000, 0x00000000 }, /* no registers */ \ | |
2bcb2ab3 GK |
1857 | { 0x0003000c, 0x00000000, 0x00000000 }, /* mips16 nonarg regs */\ |
1858 | { 0x000300fc, 0x00000000, 0x00000000 }, /* mips16 registers */ \ | |
1859 | { 0x01000000, 0x00000000, 0x00000000 }, /* mips16 T register */ \ | |
1860 | { 0x010300fc, 0x00000000, 0x00000000 }, /* mips16 and T regs */ \ | |
e75b25e7 MM |
1861 | { 0xffffffff, 0x00000000, 0x00000000 }, /* integer registers */ \ |
1862 | { 0x00000000, 0xffffffff, 0x00000000 }, /* floating registers*/ \ | |
2e7bfcec MM |
1863 | { 0x00000000, 0x00000000, 0x00000001 }, /* hi register */ \ |
1864 | { 0x00000000, 0x00000000, 0x00000002 }, /* lo register */ \ | |
225b8835 | 1865 | { 0x00000000, 0x00000000, 0x00000004 }, /* hilo register */ \ |
e75b25e7 | 1866 | { 0x00000000, 0x00000000, 0x00000003 }, /* mul/div registers */ \ |
e4f5c5d6 KR |
1867 | { 0xffffffff, 0x00000000, 0x00000001 }, /* union classes */ \ |
1868 | { 0xffffffff, 0x00000000, 0x00000002 }, \ | |
1869 | { 0xffffffff, 0x00000000, 0x00000004 }, \ | |
b8eb88d0 ILT |
1870 | { 0x00000000, 0x00000000, 0x000007f8 }, /* status registers */ \ |
1871 | { 0xffffffff, 0xffffffff, 0x000007ff } /* all registers */ \ | |
e75b25e7 MM |
1872 | } |
1873 | ||
1874 | ||
1875 | /* A C expression whose value is a register class containing hard | |
1876 | register REGNO. In general there is more that one such class; | |
1877 | choose a class which is "minimal", meaning that no smaller class | |
1878 | also contains the register. */ | |
1879 | ||
1880 | extern enum reg_class mips_regno_to_class[]; | |
1881 | ||
1882 | #define REGNO_REG_CLASS(REGNO) mips_regno_to_class[ (REGNO) ] | |
1883 | ||
1884 | /* A macro whose definition is the name of the class to which a | |
1885 | valid base register must belong. A base register is one used in | |
1886 | an address which is the register value plus a displacement. */ | |
1887 | ||
2bcb2ab3 | 1888 | #define BASE_REG_CLASS (TARGET_MIPS16 ? M16_REGS : GR_REGS) |
e75b25e7 MM |
1889 | |
1890 | /* A macro whose definition is the name of the class to which a | |
1891 | valid index register must belong. An index register is one used | |
1892 | in an address where its value is either multiplied by a scale | |
1893 | factor or added to another register (as well as added to a | |
1894 | displacement). */ | |
1895 | ||
876c09d3 | 1896 | #define INDEX_REG_CLASS NO_REGS |
e75b25e7 | 1897 | |
2bcb2ab3 GK |
1898 | /* When SMALL_REGISTER_CLASSES is nonzero, the compiler allows |
1899 | registers explicitly used in the rtl to be used as spill registers | |
1900 | but prevents the compiler from extending the lifetime of these | |
1901 | registers. */ | |
1902 | ||
1903 | #define SMALL_REGISTER_CLASSES (TARGET_MIPS16) | |
1904 | ||
1905 | /* This macro is used later on in the file. */ | |
1906 | #define GR_REG_CLASS_P(CLASS) \ | |
1907 | ((CLASS) == GR_REGS || (CLASS) == M16_REGS || (CLASS) == T_REG \ | |
1908 | || (CLASS) == M16_T_REGS || (CLASS) == M16_NA_REGS) | |
1909 | ||
1910 | /* REG_ALLOC_ORDER is to order in which to allocate registers. This | |
1911 | is the default value (allocate the registers in numeric order). We | |
1912 | define it just so that we can override it for the mips16 target in | |
1913 | ORDER_REGS_FOR_LOCAL_ALLOC. */ | |
1914 | ||
1915 | #define REG_ALLOC_ORDER \ | |
1916 | { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, \ | |
1917 | 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, \ | |
1918 | 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, \ | |
1919 | 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, \ | |
1920 | 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75 \ | |
1921 | } | |
1922 | ||
1923 | /* ORDER_REGS_FOR_LOCAL_ALLOC is a macro which permits reg_alloc_order | |
1924 | to be rearranged based on a particular function. On the mips16, we | |
1925 | want to allocate $24 (T_REG) before other registers for | |
1926 | instructions for which it is possible. */ | |
1927 | ||
1928 | #define ORDER_REGS_FOR_LOCAL_ALLOC mips_order_regs_for_local_alloc () | |
e75b25e7 MM |
1929 | |
1930 | /* REGISTER AND CONSTANT CLASSES */ | |
1931 | ||
1932 | /* Get reg_class from a letter such as appears in the machine | |
1933 | description. | |
1934 | ||
1935 | DEFINED REGISTER CLASSES: | |
1936 | ||
1937 | 'd' General (aka integer) registers | |
2bcb2ab3 GK |
1938 | Normally this is GR_REGS, but in mips16 mode this is M16_REGS |
1939 | 'y' General registers (in both mips16 and non mips16 mode) | |
1940 | 'e' mips16 non argument registers (M16_NA_REGS) | |
1941 | 't' mips16 temporary register ($24) | |
e75b25e7 MM |
1942 | 'f' Floating point registers |
1943 | 'h' Hi register | |
1944 | 'l' Lo register | |
34b650b3 | 1945 | 'x' Multiply/divide registers |
225b8835 ILT |
1946 | 'a' HILO_REG |
1947 | 'z' FP Status register | |
1948 | 'b' All registers */ | |
e75b25e7 MM |
1949 | |
1950 | extern enum reg_class mips_char_to_class[]; | |
1951 | ||
8f54374e | 1952 | #define REG_CLASS_FROM_LETTER(C) mips_char_to_class[(unsigned char)(C)] |
e75b25e7 MM |
1953 | |
1954 | /* The letters I, J, K, L, M, N, O, and P in a register constraint | |
1955 | string can be used to stand for particular ranges of immediate | |
1956 | operands. This macro defines what the ranges are. C is the | |
1957 | letter, and VALUE is a constant value. Return 1 if VALUE is | |
1958 | in the range specified by C. */ | |
1959 | ||
1960 | /* For MIPS: | |
1961 | ||
1962 | `I' is used for the range of constants an arithmetic insn can | |
1963 | actually contain (16 bits signed integers). | |
1964 | ||
1965 | `J' is used for the range which is just zero (ie, $r0). | |
1966 | ||
1967 | `K' is used for the range of constants a logical insn can actually | |
1968 | contain (16 bit zero-extended integers). | |
1969 | ||
1970 | `L' is used for the range of constants that be loaded with lui | |
1971 | (ie, the bottom 16 bits are zero). | |
1972 | ||
1973 | `M' is used for the range of constants that take two words to load | |
1974 | (ie, not matched by `I', `K', and `L'). | |
1975 | ||
2bcb2ab3 | 1976 | `N' is used for negative 16 bit constants other than -65536. |
e75b25e7 | 1977 | |
2bcb2ab3 | 1978 | `O' is a 15 bit signed integer. |
e75b25e7 MM |
1979 | |
1980 | `P' is used for positive 16 bit constants. */ | |
1981 | ||
516a2dfd JW |
1982 | #define SMALL_INT(X) ((unsigned HOST_WIDE_INT) (INTVAL (X) + 0x8000) < 0x10000) |
1983 | #define SMALL_INT_UNSIGNED(X) ((unsigned HOST_WIDE_INT) (INTVAL (X)) < 0x10000) | |
e75b25e7 MM |
1984 | |
1985 | #define CONST_OK_FOR_LETTER_P(VALUE, C) \ | |
516a2dfd | 1986 | ((C) == 'I' ? ((unsigned HOST_WIDE_INT) ((VALUE) + 0x8000) < 0x10000) \ |
e75b25e7 | 1987 | : (C) == 'J' ? ((VALUE) == 0) \ |
516a2dfd | 1988 | : (C) == 'K' ? ((unsigned HOST_WIDE_INT) (VALUE) < 0x10000) \ |
876c09d3 JW |
1989 | : (C) == 'L' ? (((VALUE) & 0x0000ffff) == 0 \ |
1990 | && (((VALUE) & ~2147483647) == 0 \ | |
1991 | || ((VALUE) & ~2147483647) == ~2147483647)) \ | |
99cbc4b0 MM |
1992 | : (C) == 'M' ? ((((VALUE) & ~0x0000ffff) != 0) \ |
1993 | && (((VALUE) & ~0x0000ffff) != ~0x0000ffff) \ | |
876c09d3 JW |
1994 | && (((VALUE) & 0x0000ffff) != 0 \ |
1995 | || (((VALUE) & ~2147483647) != 0 \ | |
1996 | && ((VALUE) & ~2147483647) != ~2147483647))) \ | |
2bcb2ab3 GK |
1997 | : (C) == 'N' ? ((unsigned HOST_WIDE_INT) ((VALUE) + 0xffff) < 0xffff) \ |
1998 | : (C) == 'O' ? ((unsigned HOST_WIDE_INT) ((VALUE) + 0x4000) < 0x8000) \ | |
99cbc4b0 | 1999 | : (C) == 'P' ? ((VALUE) != 0 && (((VALUE) & ~0x0000ffff) == 0)) \ |
e75b25e7 MM |
2000 | : 0) |
2001 | ||
2002 | /* Similar, but for floating constants, and defining letters G and H. | |
2003 | Here VALUE is the CONST_DOUBLE rtx itself. */ | |
2004 | ||
2005 | /* For Mips | |
2006 | ||
2007 | 'G' : Floating point 0 */ | |
2008 | ||
2009 | #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \ | |
2010 | ((C) == 'G' \ | |
876c09d3 | 2011 | && (VALUE) == CONST0_RTX (GET_MODE (VALUE))) |
e75b25e7 MM |
2012 | |
2013 | /* Letters in the range `Q' through `U' may be defined in a | |
7dac2f89 | 2014 | machine-dependent fashion to stand for arbitrary operand types. |
e75b25e7 MM |
2015 | The machine description macro `EXTRA_CONSTRAINT' is passed the |
2016 | operand as its first argument and the constraint letter as its | |
2017 | second operand. | |
2018 | ||
2bcb2ab3 | 2019 | `Q' is for mips16 GP relative constants |
31c714e3 | 2020 | `R' is for memory references which take 1 word for the instruction. |
2bcb2ab3 GK |
2021 | `S' is for references to extern items which are PIC for OSF/rose. |
2022 | `T' is for memory addresses that can be used to load two words. */ | |
e75b25e7 MM |
2023 | |
2024 | #define EXTRA_CONSTRAINT(OP,CODE) \ | |
2bcb2ab3 GK |
2025 | (((CODE) == 'T') ? double_memory_operand (OP, GET_MODE (OP)) \ |
2026 | : ((CODE) == 'Q') ? (GET_CODE (OP) == CONST \ | |
2027 | && mips16_gp_offset_p (OP)) \ | |
2028 | : (GET_CODE (OP) != MEM) ? FALSE \ | |
e75b25e7 | 2029 | : ((CODE) == 'R') ? simple_memory_operand (OP, GET_MODE (OP)) \ |
31c714e3 MM |
2030 | : ((CODE) == 'S') ? (HALF_PIC_P () && CONSTANT_P (OP) \ |
2031 | && HALF_PIC_ADDRESS_P (OP)) \ | |
e75b25e7 MM |
2032 | : FALSE) |
2033 | ||
2034 | /* Given an rtx X being reloaded into a reg required to be | |
2035 | in class CLASS, return the class of reg to actually use. | |
2036 | In general this is just CLASS; but on some machines | |
2037 | in some cases it is preferable to use a more restrictive class. */ | |
2038 | ||
2039 | #define PREFERRED_RELOAD_CLASS(X,CLASS) \ | |
876c09d3 | 2040 | ((CLASS) != ALL_REGS \ |
2bcb2ab3 GK |
2041 | ? (! TARGET_MIPS16 \ |
2042 | ? (CLASS) \ | |
2043 | : ((CLASS) != GR_REGS \ | |
2044 | ? (CLASS) \ | |
2045 | : M16_REGS)) \ | |
876c09d3 JW |
2046 | : ((GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \ |
2047 | || GET_MODE_CLASS (GET_MODE (X)) == MODE_COMPLEX_FLOAT) \ | |
2bcb2ab3 GK |
2048 | ? (TARGET_SOFT_FLOAT \ |
2049 | ? (TARGET_MIPS16 ? M16_REGS : GR_REGS) \ | |
2050 | : FP_REGS) \ | |
876c09d3 JW |
2051 | : ((GET_MODE_CLASS (GET_MODE (X)) == MODE_INT \ |
2052 | || GET_MODE (X) == VOIDmode) \ | |
2bcb2ab3 | 2053 | ? (TARGET_MIPS16 ? M16_REGS : GR_REGS) \ |
876c09d3 | 2054 | : (CLASS)))) |
e75b25e7 | 2055 | |
0fb5ac6f MM |
2056 | /* Certain machines have the property that some registers cannot be |
2057 | copied to some other registers without using memory. Define this | |
2058 | macro on those machines to be a C expression that is non-zero if | |
2059 | objects of mode MODE in registers of CLASS1 can only be copied to | |
2060 | registers of class CLASS2 by storing a register of CLASS1 into | |
2061 | memory and loading that memory location into a register of CLASS2. | |
2062 | ||
2063 | Do not define this macro if its value would always be zero. */ | |
2064 | ||
2065 | #define SECONDARY_MEMORY_NEEDED(CLASS1, CLASS2, MODE) \ | |
2370b831 JW |
2066 | ((!TARGET_DEBUG_H_MODE \ |
2067 | && GET_MODE_CLASS (MODE) == MODE_INT \ | |
2bcb2ab3 GK |
2068 | && ((CLASS1 == FP_REGS && GR_REG_CLASS_P (CLASS2)) \ |
2069 | || (GR_REG_CLASS_P (CLASS1) && CLASS2 == FP_REGS))) \ | |
2370b831 | 2070 | || (TARGET_FLOAT64 && !TARGET_64BIT && (MODE) == DFmode \ |
2bcb2ab3 GK |
2071 | && ((GR_REG_CLASS_P (CLASS1) && CLASS2 == FP_REGS) \ |
2072 | || (GR_REG_CLASS_P (CLASS2) && CLASS1 == FP_REGS)))) | |
0fb5ac6f | 2073 | |
46299de9 | 2074 | /* The HI and LO registers can only be reloaded via the general |
b8eb88d0 ILT |
2075 | registers. Condition code registers can only be loaded to the |
2076 | general registers, and from the floating point registers. */ | |
46299de9 | 2077 | |
225b8835 ILT |
2078 | #define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, X) \ |
2079 | mips_secondary_reload_class (CLASS, MODE, X, 1) | |
2080 | #define SECONDARY_OUTPUT_RELOAD_CLASS(CLASS, MODE, X) \ | |
2081 | mips_secondary_reload_class (CLASS, MODE, X, 0) | |
46299de9 | 2082 | |
e75b25e7 MM |
2083 | /* Return the maximum number of consecutive registers |
2084 | needed to represent mode MODE in a register of class CLASS. */ | |
2085 | ||
b206a757 JW |
2086 | #define CLASS_UNITS(mode, size) \ |
2087 | ((GET_MODE_SIZE (mode) + (size) - 1) / (size)) | |
574c75a3 | 2088 | |
e75b25e7 | 2089 | #define CLASS_MAX_NREGS(CLASS, MODE) \ |
b206a757 JW |
2090 | ((CLASS) == FP_REGS \ |
2091 | ? (TARGET_FLOAT64 \ | |
2092 | ? CLASS_UNITS (MODE, 8) \ | |
2093 | : 2 * CLASS_UNITS (MODE, 8)) \ | |
2094 | : CLASS_UNITS (MODE, UNITS_PER_WORD)) | |
e75b25e7 | 2095 | |
87d9d860 | 2096 | /* If defined, gives a class of registers that cannot be used as the |
02188693 | 2097 | operand of a SUBREG that changes the mode of the object illegally. */ |
87d9d860 | 2098 | |
02188693 | 2099 | #define CLASS_CANNOT_CHANGE_MODE \ |
87d9d860 | 2100 | (TARGET_FLOAT64 && ! TARGET_64BIT ? FP_REGS : NO_REGS) |
02188693 RH |
2101 | |
2102 | /* Defines illegal mode changes for CLASS_CANNOT_CHANGE_MODE. */ | |
2103 | ||
2104 | #define CLASS_CANNOT_CHANGE_MODE_P(FROM,TO) \ | |
2105 | (GET_MODE_SIZE (FROM) != GET_MODE_SIZE (TO)) | |
e75b25e7 MM |
2106 | \f |
2107 | /* Stack layout; function entry, exit and calling. */ | |
2108 | ||
2109 | /* Define this if pushing a word on the stack | |
2110 | makes the stack pointer a smaller address. */ | |
2111 | #define STACK_GROWS_DOWNWARD | |
2112 | ||
2113 | /* Define this if the nominal address of the stack frame | |
2114 | is at the high-address end of the local variables; | |
2115 | that is, each additional local variable allocated | |
2116 | goes at a more negative offset in the frame. */ | |
ab78d4a8 | 2117 | /* #define FRAME_GROWS_DOWNWARD */ |
e75b25e7 MM |
2118 | |
2119 | /* Offset within stack frame to start allocating local variables at. | |
2120 | If FRAME_GROWS_DOWNWARD, this is the offset to the END of the | |
2121 | first local allocated. Otherwise, it is the offset to the BEGINNING | |
2122 | of the first local allocated. */ | |
24e214e3 JW |
2123 | #define STARTING_FRAME_OFFSET \ |
2124 | (current_function_outgoing_args_size \ | |
2125 | + (TARGET_ABICALLS ? MIPS_STACK_ALIGN (UNITS_PER_WORD) : 0)) | |
ab78d4a8 MM |
2126 | |
2127 | /* Offset from the stack pointer register to an item dynamically | |
2128 | allocated on the stack, e.g., by `alloca'. | |
2129 | ||
2130 | The default value for this macro is `STACK_POINTER_OFFSET' plus the | |
2131 | length of the outgoing arguments. The default is correct for most | |
2132 | machines. See `function.c' for details. | |
2133 | ||
51bdc4d3 MM |
2134 | The MIPS ABI states that functions which dynamically allocate the |
2135 | stack must not have 0 for STACK_DYNAMIC_OFFSET, since it looks like | |
2136 | we are trying to create a second frame pointer to the function, so | |
2137 | allocate some stack space to make it happy. | |
ab78d4a8 | 2138 | |
51bdc4d3 MM |
2139 | However, the linker currently complains about linking any code that |
2140 | dynamically allocates stack space, and there seems to be a bug in | |
2141 | STACK_DYNAMIC_OFFSET, so don't define this right now. */ | |
2142 | ||
2143 | #if 0 | |
ab78d4a8 MM |
2144 | #define STACK_DYNAMIC_OFFSET(FUNDECL) \ |
2145 | ((current_function_outgoing_args_size == 0 && current_function_calls_alloca) \ | |
2146 | ? 4*UNITS_PER_WORD \ | |
2147 | : current_function_outgoing_args_size) | |
51bdc4d3 | 2148 | #endif |
e75b25e7 | 2149 | |
39dffea3 JW |
2150 | /* The return address for the current frame is in r31 is this is a leaf |
2151 | function. Otherwise, it is on the stack. It is at a variable offset | |
2152 | from sp/fp/ap, so we define a fake hard register rap which is a | |
2153 | poiner to the return address on the stack. This always gets eliminated | |
2154 | during reload to be either the frame pointer or the stack pointer plus | |
2155 | an offset. */ | |
2156 | ||
2157 | /* ??? This definition fails for leaf functions. There is currently no | |
2158 | general solution for this problem. */ | |
2159 | ||
2160 | /* ??? There appears to be no way to get the return address of any previous | |
2161 | frame except by disassembling instructions in the prologue/epilogue. | |
2162 | So currently we support only the current frame. */ | |
2163 | ||
2164 | #define RETURN_ADDR_RTX(count, frame) \ | |
2165 | ((count == 0) \ | |
c5c76735 | 2166 | ? gen_rtx_MEM (Pmode, gen_rtx_REG (Pmode, RETURN_ADDRESS_POINTER_REGNUM))\ |
24ba333f | 2167 | : (rtx) 0) |
39dffea3 | 2168 | |
e75b25e7 MM |
2169 | /* Structure to be filled in by compute_frame_size with register |
2170 | save masks, and offsets for the current function. */ | |
2171 | ||
2172 | struct mips_frame_info | |
2173 | { | |
7bea35e7 MM |
2174 | long total_size; /* # bytes that the entire frame takes up */ |
2175 | long var_size; /* # bytes that variables take up */ | |
2176 | long args_size; /* # bytes that outgoing arguments take up */ | |
2177 | long extra_size; /* # bytes of extra gunk */ | |
2178 | int gp_reg_size; /* # bytes needed to store gp regs */ | |
2179 | int fp_reg_size; /* # bytes needed to store fp regs */ | |
2180 | long mask; /* mask of saved gp registers */ | |
2181 | long fmask; /* mask of saved fp registers */ | |
2182 | long gp_save_offset; /* offset from vfp to store gp registers */ | |
2183 | long fp_save_offset; /* offset from vfp to store fp registers */ | |
2184 | long gp_sp_offset; /* offset from new sp to store gp registers */ | |
2185 | long fp_sp_offset; /* offset from new sp to store fp registers */ | |
2186 | int initialized; /* != 0 if frame size already calculated */ | |
2187 | int num_gp; /* number of gp registers saved */ | |
2188 | int num_fp; /* number of fp registers saved */ | |
2bcb2ab3 | 2189 | long insns_len; /* length of insns; mips16 only */ |
e75b25e7 MM |
2190 | }; |
2191 | ||
2192 | extern struct mips_frame_info current_frame_info; | |
2193 | ||
ab78d4a8 MM |
2194 | /* If defined, this macro specifies a table of register pairs used to |
2195 | eliminate unneeded registers that point into the stack frame. If | |
2196 | it is not defined, the only elimination attempted by the compiler | |
2197 | is to replace references to the frame pointer with references to | |
2198 | the stack pointer. | |
2199 | ||
2200 | The definition of this macro is a list of structure | |
2201 | initializations, each of which specifies an original and | |
2202 | replacement register. | |
2203 | ||
2204 | On some machines, the position of the argument pointer is not | |
2205 | known until the compilation is completed. In such a case, a | |
7dac2f89 | 2206 | separate hard register must be used for the argument pointer. |
ab78d4a8 MM |
2207 | This register can be eliminated by replacing it with either the |
2208 | frame pointer or the argument pointer, depending on whether or not | |
2209 | the frame pointer has been eliminated. | |
2210 | ||
2211 | In this case, you might specify: | |
2212 | #define ELIMINABLE_REGS \ | |
2213 | {{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ | |
2214 | {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \ | |
2215 | {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}} | |
2216 | ||
2217 | Note that the elimination of the argument pointer with the stack | |
2bcb2ab3 GK |
2218 | pointer is specified first since that is the preferred elimination. |
2219 | ||
2220 | The eliminations to $17 are only used on the mips16. See the | |
2221 | definition of HARD_FRAME_POINTER_REGNUM. */ | |
ab78d4a8 MM |
2222 | |
2223 | #define ELIMINABLE_REGS \ | |
2224 | {{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ | |
2bcb2ab3 GK |
2225 | { ARG_POINTER_REGNUM, GP_REG_FIRST + 30}, \ |
2226 | { ARG_POINTER_REGNUM, GP_REG_FIRST + 17}, \ | |
39dffea3 | 2227 | { RETURN_ADDRESS_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ |
2bcb2ab3 GK |
2228 | { RETURN_ADDRESS_POINTER_REGNUM, GP_REG_FIRST + 30}, \ |
2229 | { RETURN_ADDRESS_POINTER_REGNUM, GP_REG_FIRST + 17}, \ | |
08c2951c | 2230 | { RETURN_ADDRESS_POINTER_REGNUM, GP_REG_FIRST + 31}, \ |
2bcb2ab3 GK |
2231 | { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ |
2232 | { FRAME_POINTER_REGNUM, GP_REG_FIRST + 30}, \ | |
2233 | { FRAME_POINTER_REGNUM, GP_REG_FIRST + 17}} | |
ab78d4a8 | 2234 | |
ab78d4a8 MM |
2235 | /* A C expression that returns non-zero if the compiler is allowed to |
2236 | try to replace register number FROM-REG with register number | |
2237 | TO-REG. This macro need only be defined if `ELIMINABLE_REGS' is | |
2238 | defined, and will usually be the constant 1, since most of the | |
2239 | cases preventing register elimination are things that the compiler | |
2bcb2ab3 GK |
2240 | already knows about. |
2241 | ||
365ca18b GK |
2242 | When not in mips16 and mips64, we can always eliminate to the |
2243 | frame pointer. We can eliminate to the stack pointer unless | |
2244 | a frame pointer is needed. In mips16 mode, we need a frame | |
2245 | pointer for a large frame; otherwise, reload may be unable | |
2246 | to compute the address of a local variable, since there is | |
2247 | no way to add a large constant to the stack pointer | |
2248 | without using a temporary register. | |
2249 | ||
2250 | In mips16, for some instructions (eg lwu), we can't eliminate the | |
2251 | frame pointer for the stack pointer. These instructions are | |
2252 | only generated in TARGET_64BIT mode. | |
2253 | */ | |
ab78d4a8 MM |
2254 | |
2255 | #define CAN_ELIMINATE(FROM, TO) \ | |
08c2951c | 2256 | (((FROM) == RETURN_ADDRESS_POINTER_REGNUM && (! leaf_function_p () \ |
973838fd | 2257 | || (TO == GP_REG_FIRST + 31 && leaf_function_p))) \ |
08c2951c SC |
2258 | || ((FROM) != RETURN_ADDRESS_POINTER_REGNUM \ |
2259 | && ((TO) == HARD_FRAME_POINTER_REGNUM \ | |
2bcb2ab3 | 2260 | || ((TO) == STACK_POINTER_REGNUM && ! frame_pointer_needed \ |
365ca18b | 2261 | && ! (TARGET_MIPS16 && TARGET_64BIT) \ |
2bcb2ab3 | 2262 | && (! TARGET_MIPS16 \ |
08c2951c | 2263 | || compute_frame_size (get_frame_size ()) < 32768))))) |
ab78d4a8 MM |
2264 | |
2265 | /* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'. It | |
2266 | specifies the initial difference between the specified pair of | |
2267 | registers. This macro must be defined if `ELIMINABLE_REGS' is | |
2268 | defined. */ | |
2269 | ||
2270 | #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ | |
2271 | { compute_frame_size (get_frame_size ()); \ | |
2bcb2ab3 GK |
2272 | if (TARGET_MIPS16 && (FROM) == FRAME_POINTER_REGNUM \ |
2273 | && (TO) == HARD_FRAME_POINTER_REGNUM) \ | |
2274 | (OFFSET) = - current_function_outgoing_args_size; \ | |
2275 | else if ((FROM) == FRAME_POINTER_REGNUM) \ | |
ab78d4a8 | 2276 | (OFFSET) = 0; \ |
2bcb2ab3 GK |
2277 | else if (TARGET_MIPS16 && (FROM) == ARG_POINTER_REGNUM \ |
2278 | && (TO) == HARD_FRAME_POINTER_REGNUM) \ | |
2279 | (OFFSET) = (current_frame_info.total_size \ | |
2280 | - current_function_outgoing_args_size \ | |
a53f72db GRK |
2281 | - ((mips_abi != ABI_32 \ |
2282 | && mips_abi != ABI_O64 \ | |
2283 | && mips_abi != ABI_EABI) \ | |
2bcb2ab3 GK |
2284 | ? current_function_pretend_args_size \ |
2285 | : 0)); \ | |
2286 | else if ((FROM) == ARG_POINTER_REGNUM) \ | |
a2ef6e41 | 2287 | (OFFSET) = (current_frame_info.total_size \ |
a53f72db GRK |
2288 | - ((mips_abi != ABI_32 \ |
2289 | && mips_abi != ABI_O64 \ | |
2290 | && mips_abi != ABI_EABI) \ | |
a2ef6e41 RK |
2291 | ? current_function_pretend_args_size \ |
2292 | : 0)); \ | |
c9b4de06 JW |
2293 | /* Some ABIs store 64 bits to the stack, but Pmode is 32 bits, \ |
2294 | so we must add 4 bytes to the offset to get the right value. */ \ | |
2bcb2ab3 | 2295 | else if ((FROM) == RETURN_ADDRESS_POINTER_REGNUM) \ |
973838fd | 2296 | { \ |
08c2951c SC |
2297 | if (leaf_function_p ()) \ |
2298 | (OFFSET) = 0; \ | |
2299 | else (OFFSET) = current_frame_info.gp_sp_offset \ | |
c9b4de06 JW |
2300 | + ((UNITS_PER_WORD - (POINTER_SIZE / BITS_PER_UNIT)) \ |
2301 | * (BYTES_BIG_ENDIAN != 0)); \ | |
973838fd | 2302 | } \ |
ab78d4a8 MM |
2303 | } |
2304 | ||
e75b25e7 MM |
2305 | /* If we generate an insn to push BYTES bytes, |
2306 | this says how many the stack pointer really advances by. | |
8aeea6e6 | 2307 | On the VAX, sp@- in a byte insn really pushes a word. */ |
e75b25e7 MM |
2308 | |
2309 | /* #define PUSH_ROUNDING(BYTES) 0 */ | |
2310 | ||
2311 | /* If defined, the maximum amount of space required for outgoing | |
2312 | arguments will be computed and placed into the variable | |
2313 | `current_function_outgoing_args_size'. No space will be pushed | |
2314 | onto the stack for each call; instead, the function prologue | |
2315 | should increase the stack frame size by this amount. | |
2316 | ||
2317 | It is not proper to define both `PUSH_ROUNDING' and | |
2318 | `ACCUMULATE_OUTGOING_ARGS'. */ | |
f73ad30e | 2319 | #define ACCUMULATE_OUTGOING_ARGS 1 |
e75b25e7 | 2320 | |
6cb6c3b3 MM |
2321 | /* Offset from the argument pointer register to the first argument's |
2322 | address. On some machines it may depend on the data type of the | |
2323 | function. | |
e75b25e7 | 2324 | |
6cb6c3b3 | 2325 | If `ARGS_GROW_DOWNWARD', this is the offset to the location above |
39282292 MM |
2326 | the first argument's address. |
2327 | ||
2328 | On the MIPS, we must skip the first argument position if we are | |
876c09d3 | 2329 | returning a structure or a union, to account for its address being |
305aa9e2 MM |
2330 | passed in $4. However, at the current time, this produces a compiler |
2331 | that can't bootstrap, so comment it out for now. */ | |
e75b25e7 | 2332 | |
305aa9e2 | 2333 | #if 0 |
6cb6c3b3 MM |
2334 | #define FIRST_PARM_OFFSET(FNDECL) \ |
2335 | (FNDECL != 0 \ | |
2336 | && TREE_TYPE (FNDECL) != 0 \ | |
2337 | && TREE_TYPE (TREE_TYPE (FNDECL)) != 0 \ | |
2338 | && (TREE_CODE (TREE_TYPE (TREE_TYPE (FNDECL))) == RECORD_TYPE \ | |
39282292 MM |
2339 | || TREE_CODE (TREE_TYPE (TREE_TYPE (FNDECL))) == UNION_TYPE) \ |
2340 | ? UNITS_PER_WORD \ | |
2341 | : 0) | |
305aa9e2 MM |
2342 | #else |
2343 | #define FIRST_PARM_OFFSET(FNDECL) 0 | |
2344 | #endif | |
e75b25e7 MM |
2345 | |
2346 | /* When a parameter is passed in a register, stack space is still | |
2347 | allocated for it. For the MIPS, stack space must be allocated, cf | |
2348 | Asm Lang Prog Guide page 7-8. | |
2349 | ||
2350 | BEWARE that some space is also allocated for non existing arguments | |
2351 | in register. In case an argument list is of form GF used registers | |
2352 | are a0 (a2,a3), but we should push over a1... */ | |
2353 | ||
516a2dfd JW |
2354 | #define REG_PARM_STACK_SPACE(FNDECL) \ |
2355 | ((MAX_ARGS_IN_REGISTERS*UNITS_PER_WORD) - FIRST_PARM_OFFSET (FNDECL)) | |
e75b25e7 MM |
2356 | |
2357 | /* Define this if it is the responsibility of the caller to | |
7dac2f89 | 2358 | allocate the area reserved for arguments passed in registers. |
e75b25e7 | 2359 | If `ACCUMULATE_OUTGOING_ARGS' is also defined, the only effect |
7dac2f89 | 2360 | of this macro is to determine whether the space is included in |
e75b25e7 MM |
2361 | `current_function_outgoing_args_size'. */ |
2362 | #define OUTGOING_REG_PARM_STACK_SPACE | |
2363 | ||
2364 | /* Align stack frames on 64 bits (Double Word ). */ | |
d1c17572 | 2365 | #ifndef STACK_BOUNDARY |
e75b25e7 | 2366 | #define STACK_BOUNDARY 64 |
d1c17572 | 2367 | #endif |
e75b25e7 | 2368 | |
876c09d3 | 2369 | /* Make sure 4 words are always allocated on the stack. */ |
e75b25e7 MM |
2370 | |
2371 | #ifndef STACK_ARGS_ADJUST | |
2372 | #define STACK_ARGS_ADJUST(SIZE) \ | |
2373 | { \ | |
876c09d3 JW |
2374 | if (SIZE.constant < 4 * UNITS_PER_WORD) \ |
2375 | SIZE.constant = 4 * UNITS_PER_WORD; \ | |
e75b25e7 MM |
2376 | } |
2377 | #endif | |
2378 | ||
2379 | \f | |
2380 | /* A C expression that should indicate the number of bytes of its | |
38e01259 | 2381 | own arguments that a function pops on returning, or 0 |
e75b25e7 MM |
2382 | if the function pops no arguments and the caller must therefore |
2383 | pop them all after the function returns. | |
2384 | ||
8b109b37 RK |
2385 | FUNDECL is the declaration node of the function (as a tree). |
2386 | ||
e75b25e7 MM |
2387 | FUNTYPE is a C variable whose value is a tree node that |
2388 | describes the function in question. Normally it is a node of | |
2389 | type `FUNCTION_TYPE' that describes the data type of the function. | |
2390 | From this it is possible to obtain the data types of the value | |
2391 | and arguments (if known). | |
2392 | ||
2393 | When a call to a library function is being considered, FUNTYPE | |
2394 | will contain an identifier node for the library function. Thus, | |
2395 | if you need to distinguish among various library functions, you | |
2396 | can do so by their names. Note that "library function" in this | |
2397 | context means a function used to perform arithmetic, whose name | |
2398 | is known specially in the compiler and was not mentioned in the | |
2399 | C code being compiled. | |
2400 | ||
2401 | STACK-SIZE is the number of bytes of arguments passed on the | |
2402 | stack. If a variable number of bytes is passed, it is zero, and | |
2403 | argument popping will always be the responsibility of the | |
2404 | calling function. */ | |
2405 | ||
8b109b37 | 2406 | #define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE) 0 |
e75b25e7 MM |
2407 | |
2408 | ||
2409 | /* Symbolic macros for the registers used to return integer and floating | |
2410 | point values. */ | |
2411 | ||
2412 | #define GP_RETURN (GP_REG_FIRST + 2) | |
2413 | #define FP_RETURN ((TARGET_SOFT_FLOAT) ? GP_RETURN : (FP_REG_FIRST + 0)) | |
2414 | ||
2415 | /* Symbolic macros for the first/last argument registers. */ | |
2416 | ||
2417 | #define GP_ARG_FIRST (GP_REG_FIRST + 4) | |
2418 | #define GP_ARG_LAST (GP_REG_FIRST + 7) | |
2419 | #define FP_ARG_FIRST (FP_REG_FIRST + 12) | |
2420 | #define FP_ARG_LAST (FP_REG_FIRST + 15) | |
2421 | ||
2422 | #define MAX_ARGS_IN_REGISTERS 4 | |
2423 | ||
2424 | /* Define how to find the value returned by a library function | |
2bcb2ab3 GK |
2425 | assuming the value has mode MODE. Because we define |
2426 | PROMOTE_FUNCTION_RETURN, we must promote the mode just as | |
2427 | PROMOTE_MODE does. */ | |
e75b25e7 MM |
2428 | |
2429 | #define LIBCALL_VALUE(MODE) \ | |
2bcb2ab3 GK |
2430 | gen_rtx (REG, \ |
2431 | ((GET_MODE_CLASS (MODE) != MODE_INT \ | |
2432 | || GET_MODE_SIZE (MODE) >= 4) \ | |
2433 | ? (MODE) \ | |
2434 | : SImode), \ | |
46299de9 ILT |
2435 | ((GET_MODE_CLASS (MODE) == MODE_FLOAT \ |
2436 | && (! TARGET_SINGLE_FLOAT \ | |
2437 | || GET_MODE_SIZE (MODE) <= 4)) \ | |
2438 | ? FP_RETURN \ | |
2439 | : GP_RETURN)) | |
e75b25e7 MM |
2440 | |
2441 | /* Define how to find the value returned by a function. | |
2442 | VALTYPE is the data type of the value (as a tree). | |
2443 | If the precise function being called is known, FUNC is its FUNCTION_DECL; | |
2444 | otherwise, FUNC is 0. */ | |
2445 | ||
2446 | #define FUNCTION_VALUE(VALTYPE, FUNC) LIBCALL_VALUE (TYPE_MODE (VALTYPE)) | |
2447 | ||
2448 | ||
2449 | /* 1 if N is a possible register number for a function value. | |
2450 | On the MIPS, R2 R3 and F0 F2 are the only register thus used. | |
2451 | Currently, R2 and F0 are only implemented here (C has no complex type) */ | |
2452 | ||
2453 | #define FUNCTION_VALUE_REGNO_P(N) ((N) == GP_RETURN || (N) == FP_RETURN) | |
2454 | ||
46af8e31 JW |
2455 | /* 1 if N is a possible register number for function argument passing. |
2456 | We have no FP argument registers when soft-float. When FP registers | |
2457 | are 32 bits, we can't directly reference the odd numbered ones. */ | |
2458 | ||
2459 | #define FUNCTION_ARG_REGNO_P(N) \ | |
2460 | (((N) >= GP_ARG_FIRST && (N) <= GP_ARG_LAST) \ | |
6e92f4b6 | 2461 | || ((! TARGET_SOFT_FLOAT \ |
46af8e31 | 2462 | && ((N) >= FP_ARG_FIRST && (N) <= FP_ARG_LAST) \ |
2bcb2ab3 | 2463 | && (TARGET_FLOAT64 || (0 == (N) % 2))) \ |
6e92f4b6 | 2464 | && ! fixed_regs[N])) |
e75b25e7 MM |
2465 | |
2466 | /* A C expression which can inhibit the returning of certain function | |
2467 | values in registers, based on the type of value. A nonzero value says | |
2468 | to return the function value in memory, just as large structures are | |
2469 | always returned. Here TYPE will be a C expression of type | |
2470 | `tree', representing the data type of the value. | |
2471 | ||
e14fa9c4 DE |
2472 | Note that values of mode `BLKmode' must be explicitly |
2473 | handled by this macro. Also, the option `-fpcc-struct-return' | |
e75b25e7 MM |
2474 | takes effect regardless of this macro. On most systems, it is |
2475 | possible to leave the macro undefined; this causes a default | |
e14fa9c4 DE |
2476 | definition to be used, whose value is the constant 1 for BLKmode |
2477 | values, and 0 otherwise. | |
e75b25e7 MM |
2478 | |
2479 | GCC normally converts 1 byte structures into chars, 2 byte | |
2480 | structs into shorts, and 4 byte structs into ints, and returns | |
2481 | them this way. Defining the following macro overrides this, | |
2482 | to give us MIPS cc compatibility. */ | |
2483 | ||
2484 | #define RETURN_IN_MEMORY(TYPE) \ | |
e419152d | 2485 | (TYPE_MODE (TYPE) == BLKmode) |
e75b25e7 MM |
2486 | \f |
2487 | /* A code distinguishing the floating point format of the target | |
2488 | machine. There are three defined values: IEEE_FLOAT_FORMAT, | |
2489 | VAX_FLOAT_FORMAT, and UNKNOWN_FLOAT_FORMAT. */ | |
2490 | ||
2491 | #define TARGET_FLOAT_FORMAT IEEE_FLOAT_FORMAT | |
2492 | ||
2493 | \f | |
2494 | /* Define a data type for recording info about an argument list | |
2495 | during the scan of that argument list. This data type should | |
2496 | hold all necessary information about the function itself | |
2497 | and about the args processed so far, enough to enable macros | |
2498 | such as FUNCTION_ARG to determine where the next arg should go. | |
2bcb2ab3 GK |
2499 | |
2500 | On the mips16, we need to keep track of which floating point | |
2501 | arguments were passed in general registers, but would have been | |
2502 | passed in the FP regs if this were a 32 bit function, so that we | |
2503 | can move them to the FP regs if we wind up calling a 32 bit | |
2504 | function. We record this information in fp_code, encoded in base | |
2505 | four. A zero digit means no floating point argument, a one digit | |
2506 | means an SFmode argument, and a two digit means a DFmode argument, | |
2507 | and a three digit is not used. The low order digit is the first | |
2508 | argument. Thus 6 == 1 * 4 + 2 means a DFmode argument followed by | |
2509 | an SFmode argument. ??? A more sophisticated approach will be | |
2510 | needed if MIPS_ABI != ABI_32. */ | |
e75b25e7 MM |
2511 | |
2512 | typedef struct mips_args { | |
3f1f8d8c | 2513 | int gp_reg_found; /* whether a gp register was found yet */ |
75131237 RK |
2514 | unsigned int arg_number; /* argument number */ |
2515 | unsigned int arg_words; /* # total words the arguments take */ | |
2516 | unsigned int fp_arg_words; /* # words for FP args (MIPS_EABI only) */ | |
293a36eb | 2517 | int last_arg_fp; /* nonzero if last arg was FP (EABI only) */ |
2bcb2ab3 | 2518 | int fp_code; /* Mode of FP arguments (mips16) */ |
75131237 | 2519 | unsigned int num_adjusts; /* number of adjustments made */ |
3f1f8d8c | 2520 | /* Adjustments made to args pass in regs. */ |
7dac2f89 | 2521 | /* ??? The size is doubled to work around a |
b796c573 RS |
2522 | bug in the code that sets the adjustments |
2523 | in function_arg. */ | |
2524 | struct rtx_def *adjust[MAX_ARGS_IN_REGISTERS*2]; | |
e75b25e7 MM |
2525 | } CUMULATIVE_ARGS; |
2526 | ||
2527 | /* Initialize a variable CUM of type CUMULATIVE_ARGS | |
2528 | for a call to a function whose data type is FNTYPE. | |
2529 | For a library call, FNTYPE is 0. | |
2530 | ||
2531 | */ | |
2532 | ||
2c7ee1a6 | 2533 | #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME,INDIRECT) \ |
e75b25e7 MM |
2534 | init_cumulative_args (&CUM, FNTYPE, LIBNAME) \ |
2535 | ||
2536 | /* Update the data in CUM to advance over an argument | |
2537 | of mode MODE and data type TYPE. | |
2538 | (TYPE is null for libcalls where that information may not be available.) */ | |
2539 | ||
2540 | #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \ | |
2541 | function_arg_advance (&CUM, MODE, TYPE, NAMED) | |
2542 | ||
2543 | /* Determine where to put an argument to a function. | |
2544 | Value is zero to push the argument on the stack, | |
2545 | or a hard register in which to store the argument. | |
2546 | ||
2547 | MODE is the argument's machine mode. | |
2548 | TYPE is the data type of the argument (as a tree). | |
2549 | This is null for libcalls where that information may | |
2550 | not be available. | |
2551 | CUM is a variable of type CUMULATIVE_ARGS which gives info about | |
2552 | the preceding args and about the function being called. | |
2553 | NAMED is nonzero if this argument is a named parameter | |
2554 | (otherwise it is an extra parameter matching an ellipsis). */ | |
2555 | ||
2556 | #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \ | |
2557 | function_arg( &CUM, MODE, TYPE, NAMED) | |
2558 | ||
2559 | /* For an arg passed partly in registers and partly in memory, | |
2560 | this is the number of registers used. | |
2561 | For args passed entirely in registers or entirely in memory, zero. */ | |
2562 | ||
2563 | #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \ | |
2564 | function_arg_partial_nregs (&CUM, MODE, TYPE, NAMED) | |
2565 | ||
2566 | /* If defined, a C expression that gives the alignment boundary, in | |
2567 | bits, of an argument with the specified mode and type. If it is | |
2568 | not defined, `PARM_BOUNDARY' is used for all arguments. */ | |
2569 | ||
2570 | #define FUNCTION_ARG_BOUNDARY(MODE, TYPE) \ | |
2571 | (((TYPE) != 0) \ | |
75131237 | 2572 | ? ((TYPE_ALIGN(TYPE) <= PARM_BOUNDARY) \ |
e75b25e7 MM |
2573 | ? PARM_BOUNDARY \ |
2574 | : TYPE_ALIGN(TYPE)) \ | |
2575 | : ((GET_MODE_ALIGNMENT(MODE) <= PARM_BOUNDARY) \ | |
2576 | ? PARM_BOUNDARY \ | |
2577 | : GET_MODE_ALIGNMENT(MODE))) | |
2578 | ||
2579 | \f | |
e75b25e7 MM |
2580 | /* Tell prologue and epilogue if register REGNO should be saved / restored. */ |
2581 | ||
2582 | #define MUST_SAVE_REGISTER(regno) \ | |
2bcb2ab3 GK |
2583 | ((regs_ever_live[regno] && !call_used_regs[regno]) \ |
2584 | || (regno == HARD_FRAME_POINTER_REGNUM && frame_pointer_needed) \ | |
ab78d4a8 | 2585 | || (regno == (GP_REG_FIRST + 31) && regs_ever_live[GP_REG_FIRST + 31])) |
e75b25e7 MM |
2586 | |
2587 | /* ALIGN FRAMES on double word boundaries */ | |
d1c17572 JL |
2588 | #ifndef MIPS_STACK_ALIGN |
2589 | #define MIPS_STACK_ALIGN(LOC) (((LOC) + 7) & ~7) | |
2590 | #endif | |
e75b25e7 | 2591 | |
5d3f2bd5 RH |
2592 | \f |
2593 | /* Define the `__builtin_va_list' type for the ABI. */ | |
2594 | #define BUILD_VA_LIST_TYPE(VALIST) \ | |
2595 | (VALIST) = mips_build_va_list () | |
2596 | ||
2597 | /* Implement `va_start' for varargs and stdarg. */ | |
2598 | #define EXPAND_BUILTIN_VA_START(stdarg, valist, nextarg) \ | |
2599 | mips_va_start (stdarg, valist, nextarg) | |
2600 | ||
2601 | /* Implement `va_arg'. */ | |
2602 | #define EXPAND_BUILTIN_VA_ARG(valist, type) \ | |
2603 | mips_va_arg (valist, type) | |
e75b25e7 MM |
2604 | \f |
2605 | /* Output assembler code to FILE to increment profiler label # LABELNO | |
2606 | for profiling a function entry. */ | |
2607 | ||
2608 | #define FUNCTION_PROFILER(FILE, LABELNO) \ | |
2609 | { \ | |
2bcb2ab3 GK |
2610 | if (TARGET_MIPS16) \ |
2611 | sorry ("mips16 function profiling"); \ | |
e75b25e7 MM |
2612 | fprintf (FILE, "\t.set\tnoreorder\n"); \ |
2613 | fprintf (FILE, "\t.set\tnoat\n"); \ | |
2614 | fprintf (FILE, "\tmove\t%s,%s\t\t# save current return address\n", \ | |
2615 | reg_names[GP_REG_FIRST + 1], reg_names[GP_REG_FIRST + 31]); \ | |
2616 | fprintf (FILE, "\tjal\t_mcount\n"); \ | |
876c09d3 JW |
2617 | fprintf (FILE, \ |
2618 | "\t%s\t%s,%s,%d\t\t# _mcount pops 2 words from stack\n", \ | |
2619 | TARGET_64BIT ? "dsubu" : "subu", \ | |
e75b25e7 | 2620 | reg_names[STACK_POINTER_REGNUM], \ |
876c09d3 | 2621 | reg_names[STACK_POINTER_REGNUM], \ |
1eeed24e | 2622 | Pmode == DImode ? 16 : 8); \ |
e75b25e7 MM |
2623 | fprintf (FILE, "\t.set\treorder\n"); \ |
2624 | fprintf (FILE, "\t.set\tat\n"); \ | |
2625 | } | |
2626 | ||
d8d5b1e1 MM |
2627 | /* Define this macro if the code for function profiling should come |
2628 | before the function prologue. Normally, the profiling code comes | |
2629 | after. */ | |
2630 | ||
2631 | /* #define PROFILE_BEFORE_PROLOGUE */ | |
2632 | ||
e75b25e7 MM |
2633 | /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, |
2634 | the stack pointer does not matter. The value is tested only in | |
2635 | functions that have frame pointers. | |
2636 | No definition is equivalent to always zero. */ | |
2637 | ||
2638 | #define EXIT_IGNORE_STACK 1 | |
2639 | ||
2640 | \f | |
2641 | /* A C statement to output, on the stream FILE, assembler code for a | |
7dac2f89 | 2642 | block of data that contains the constant parts of a trampoline. |
e75b25e7 MM |
2643 | This code should not include a label--the label is taken care of |
2644 | automatically. */ | |
2645 | ||
2646 | #define TRAMPOLINE_TEMPLATE(STREAM) \ | |
2647 | { \ | |
2648 | fprintf (STREAM, "\t.word\t0x03e00821\t\t# move $1,$31\n"); \ | |
2649 | fprintf (STREAM, "\t.word\t0x04110001\t\t# bgezal $0,.+8\n"); \ | |
2650 | fprintf (STREAM, "\t.word\t0x00000000\t\t# nop\n"); \ | |
1eeed24e | 2651 | if (Pmode == DImode) \ |
876c09d3 JW |
2652 | { \ |
2653 | fprintf (STREAM, "\t.word\t0xdfe30014\t\t# ld $3,20($31)\n"); \ | |
2654 | fprintf (STREAM, "\t.word\t0xdfe2001c\t\t# ld $2,28($31)\n"); \ | |
2655 | } \ | |
2656 | else \ | |
2657 | { \ | |
0acefe54 JW |
2658 | fprintf (STREAM, "\t.word\t0x8fe30014\t\t# lw $3,20($31)\n"); \ |
2659 | fprintf (STREAM, "\t.word\t0x8fe20018\t\t# lw $2,24($31)\n"); \ | |
876c09d3 | 2660 | } \ |
0acefe54 | 2661 | fprintf (STREAM, "\t.word\t0x0060c821\t\t# move $25,$3 (abicalls)\n"); \ |
e75b25e7 MM |
2662 | fprintf (STREAM, "\t.word\t0x00600008\t\t# jr $3\n"); \ |
2663 | fprintf (STREAM, "\t.word\t0x0020f821\t\t# move $31,$1\n"); \ | |
1eeed24e | 2664 | if (Pmode == DImode) \ |
876c09d3 | 2665 | { \ |
876c09d3 JW |
2666 | fprintf (STREAM, "\t.dword\t0x00000000\t\t# <function address>\n"); \ |
2667 | fprintf (STREAM, "\t.dword\t0x00000000\t\t# <static chain value>\n"); \ | |
2668 | } \ | |
2669 | else \ | |
2670 | { \ | |
2671 | fprintf (STREAM, "\t.word\t0x00000000\t\t# <function address>\n"); \ | |
2672 | fprintf (STREAM, "\t.word\t0x00000000\t\t# <static chain value>\n"); \ | |
2673 | } \ | |
e75b25e7 MM |
2674 | } |
2675 | ||
2676 | /* A C expression for the size in bytes of the trampoline, as an | |
2677 | integer. */ | |
2678 | ||
1eeed24e | 2679 | #define TRAMPOLINE_SIZE (32 + (Pmode == DImode ? 16 : 8)) |
e75b25e7 | 2680 | |
876c09d3 | 2681 | /* Alignment required for trampolines, in bits. */ |
e75b25e7 | 2682 | |
1eeed24e | 2683 | #define TRAMPOLINE_ALIGNMENT (Pmode == DImode ? 64 : 32) |
e75b25e7 | 2684 | |
c85f7c16 JL |
2685 | /* INITIALIZE_TRAMPOLINE calls this library function to flush |
2686 | program and data caches. */ | |
2687 | ||
2688 | #ifndef CACHE_FLUSH_FUNC | |
2689 | #define CACHE_FLUSH_FUNC "_flush_cache" | |
2690 | #endif | |
2691 | ||
7dac2f89 | 2692 | /* A C statement to initialize the variable parts of a trampoline. |
e75b25e7 MM |
2693 | ADDR is an RTX for the address of the trampoline; FNADDR is an |
2694 | RTX for the address of the nested function; STATIC_CHAIN is an | |
2695 | RTX for the static chain value that should be passed to the | |
2696 | function when it is called. */ | |
2697 | ||
2698 | #define INITIALIZE_TRAMPOLINE(ADDR, FUNC, CHAIN) \ | |
2699 | { \ | |
2700 | rtx addr = ADDR; \ | |
1eeed24e | 2701 | if (Pmode == DImode) \ |
876c09d3 | 2702 | { \ |
c5c76735 JL |
2703 | emit_move_insn (gen_rtx_MEM (DImode, plus_constant (addr, 32)), FUNC); \ |
2704 | emit_move_insn (gen_rtx_MEM (DImode, plus_constant (addr, 40)), CHAIN);\ | |
876c09d3 JW |
2705 | } \ |
2706 | else \ | |
2707 | { \ | |
c5c76735 JL |
2708 | emit_move_insn (gen_rtx_MEM (SImode, plus_constant (addr, 32)), FUNC); \ |
2709 | emit_move_insn (gen_rtx_MEM (SImode, plus_constant (addr, 36)), CHAIN);\ | |
876c09d3 | 2710 | } \ |
e75b25e7 | 2711 | \ |
22b54c57 RK |
2712 | /* Flush both caches. We need to flush the data cache in case \ |
2713 | the system has a write-back cache. */ \ | |
876c09d3 | 2714 | /* ??? Should check the return value for errors. */ \ |
c5c76735 | 2715 | emit_library_call (gen_rtx_SYMBOL_REF (Pmode, CACHE_FLUSH_FUNC), \ |
876c09d3 | 2716 | 0, VOIDmode, 3, addr, Pmode, \ |
01d74729 | 2717 | GEN_INT (TRAMPOLINE_SIZE), TYPE_MODE (integer_type_node),\ |
22b54c57 | 2718 | GEN_INT (3), TYPE_MODE (integer_type_node)); \ |
e75b25e7 | 2719 | } |
e75b25e7 MM |
2720 | \f |
2721 | /* Addressing modes, and classification of registers for them. */ | |
2722 | ||
940da324 JL |
2723 | /* #define HAVE_POST_INCREMENT 0 */ |
2724 | /* #define HAVE_POST_DECREMENT 0 */ | |
e75b25e7 | 2725 | |
940da324 JL |
2726 | /* #define HAVE_PRE_DECREMENT 0 */ |
2727 | /* #define HAVE_PRE_INCREMENT 0 */ | |
e75b25e7 MM |
2728 | |
2729 | /* These assume that REGNO is a hard or pseudo reg number. | |
2730 | They give nonzero only if REGNO is a hard reg of the suitable class | |
2731 | or a pseudo reg currently allocated to a suitable hard reg. | |
2732 | These definitions are NOT overridden anywhere. */ | |
2733 | ||
2bcb2ab3 GK |
2734 | #define BASE_REG_P(regno, mode) \ |
2735 | (TARGET_MIPS16 \ | |
2736 | ? (M16_REG_P (regno) \ | |
2737 | || (regno) == FRAME_POINTER_REGNUM \ | |
2738 | || (regno) == ARG_POINTER_REGNUM \ | |
2739 | || ((regno) == STACK_POINTER_REGNUM \ | |
2740 | && (GET_MODE_SIZE (mode) == 4 \ | |
2741 | || GET_MODE_SIZE (mode) == 8))) \ | |
2742 | : GP_REG_P (regno)) | |
e75b25e7 | 2743 | |
2bcb2ab3 GK |
2744 | #define GP_REG_OR_PSEUDO_STRICT_P(regno, mode) \ |
2745 | BASE_REG_P((regno < FIRST_PSEUDO_REGISTER) ? regno : reg_renumber[regno], \ | |
2746 | (mode)) | |
2747 | ||
2748 | #define GP_REG_OR_PSEUDO_NONSTRICT_P(regno, mode) \ | |
2749 | (((regno) >= FIRST_PSEUDO_REGISTER) || (BASE_REG_P ((regno), (mode)))) | |
e75b25e7 | 2750 | |
876c09d3 | 2751 | #define REGNO_OK_FOR_INDEX_P(regno) 0 |
2bcb2ab3 GK |
2752 | #define REGNO_MODE_OK_FOR_BASE_P(regno, mode) \ |
2753 | GP_REG_OR_PSEUDO_STRICT_P ((regno), (mode)) | |
e75b25e7 MM |
2754 | |
2755 | /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx | |
2756 | and check its validity for a certain class. | |
2757 | We have two alternate definitions for each of them. | |
2758 | The usual definition accepts all pseudo regs; the other rejects them all. | |
2759 | The symbol REG_OK_STRICT causes the latter definition to be used. | |
2760 | ||
2761 | Most source files want to accept pseudo regs in the hope that | |
2762 | they will get allocated to the class that the insn wants them to be in. | |
2763 | Some source files that are used after register allocation | |
2764 | need to be strict. */ | |
2765 | ||
2766 | #ifndef REG_OK_STRICT | |
2bcb2ab3 | 2767 | #define REG_MODE_OK_FOR_BASE_P(X, MODE) \ |
c94c9817 | 2768 | mips_reg_mode_ok_for_base_p (X, MODE, 0) |
e75b25e7 | 2769 | #else |
2bcb2ab3 | 2770 | #define REG_MODE_OK_FOR_BASE_P(X, MODE) \ |
c94c9817 | 2771 | mips_reg_mode_ok_for_base_p (X, MODE, 1) |
e75b25e7 MM |
2772 | #endif |
2773 | ||
c94c9817 MM |
2774 | #define REG_OK_FOR_INDEX_P(X) 0 |
2775 | ||
e75b25e7 MM |
2776 | \f |
2777 | /* Maximum number of registers that can appear in a valid memory address. */ | |
2778 | ||
2779 | #define MAX_REGS_PER_ADDRESS 1 | |
2780 | ||
2781 | /* A C compound statement with a conditional `goto LABEL;' executed | |
2782 | if X (an RTX) is a legitimate memory address on the target | |
2783 | machine for a memory operand of mode MODE. | |
2784 | ||
2785 | It usually pays to define several simpler macros to serve as | |
2786 | subroutines for this one. Otherwise it may be too complicated | |
2787 | to understand. | |
2788 | ||
2789 | This macro must exist in two variants: a strict variant and a | |
7dac2f89 | 2790 | non-strict one. The strict variant is used in the reload pass. |
e75b25e7 MM |
2791 | It must be defined so that any pseudo-register that has not been |
2792 | allocated a hard register is considered a memory reference. In | |
2793 | contexts where some kind of register is required, a | |
2794 | pseudo-register with no hard register must be rejected. | |
2795 | ||
2796 | The non-strict variant is used in other passes. It must be | |
2797 | defined to accept all pseudo-registers in every context where | |
2798 | some kind of register is required. | |
2799 | ||
2800 | Compiler source files that want to use the strict variant of | |
2801 | this macro define the macro `REG_OK_STRICT'. You should use an | |
2802 | `#ifdef REG_OK_STRICT' conditional to define the strict variant | |
2803 | in that case and the non-strict variant otherwise. | |
2804 | ||
2805 | Typically among the subroutines used to define | |
2806 | `GO_IF_LEGITIMATE_ADDRESS' are subroutines to check for | |
2807 | acceptable registers for various purposes (one for base | |
2808 | registers, one for index registers, and so on). Then only these | |
2809 | subroutine macros need have two variants; the higher levels of | |
2810 | macros may be the same whether strict or not. | |
2811 | ||
2812 | Normally, constant addresses which are the sum of a `symbol_ref' | |
2813 | and an integer are stored inside a `const' RTX to mark them as | |
2814 | constant. Therefore, there is no need to recognize such sums | |
2815 | specifically as legitimate addresses. Normally you would simply | |
2816 | recognize any `const' as legitimate. | |
2817 | ||
2818 | Usually `PRINT_OPERAND_ADDRESS' is not prepared to handle | |
2819 | constant sums that are not marked with `const'. It assumes | |
2820 | that a naked `plus' indicates indexing. If so, then you *must* | |
2821 | reject such naked constant sums as illegitimate addresses, so | |
2822 | that none of them will be given to `PRINT_OPERAND_ADDRESS'. | |
2823 | ||
2824 | On some machines, whether a symbolic address is legitimate | |
2825 | depends on the section that the address refers to. On these | |
2826 | machines, define the macro `ENCODE_SECTION_INFO' to store the | |
7dac2f89 | 2827 | information into the `symbol_ref', and then check for it here. |
e75b25e7 MM |
2828 | When you see a `const', you will have to look inside it to find |
2829 | the `symbol_ref' in order to determine the section. */ | |
2830 | ||
2831 | #if 1 | |
bd9f1972 KG |
2832 | #define GO_PRINTF(x) fprintf(stderr, (x)) |
2833 | #define GO_PRINTF2(x,y) fprintf(stderr, (x), (y)) | |
e75b25e7 MM |
2834 | #define GO_DEBUG_RTX(x) debug_rtx(x) |
2835 | ||
2836 | #else | |
2837 | #define GO_PRINTF(x) | |
2838 | #define GO_PRINTF2(x,y) | |
2839 | #define GO_DEBUG_RTX(x) | |
2840 | #endif | |
2841 | ||
c94c9817 MM |
2842 | #ifdef REG_OK_STRICT |
2843 | #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \ | |
2844 | { \ | |
2845 | if (mips_legitimate_address_p (MODE, X, 1)) \ | |
2846 | goto ADDR; \ | |
e75b25e7 | 2847 | } |
c94c9817 MM |
2848 | #else |
2849 | #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \ | |
2850 | { \ | |
2851 | if (mips_legitimate_address_p (MODE, X, 0)) \ | |
2852 | goto ADDR; \ | |
2853 | } | |
2854 | #endif | |
e75b25e7 MM |
2855 | |
2856 | /* A C expression that is 1 if the RTX X is a constant which is a | |
6eff269e BK |
2857 | valid address. This is defined to be the same as `CONSTANT_P (X)', |
2858 | but rejecting CONST_DOUBLE. */ | |
5de1e2ce JW |
2859 | /* When pic, we must reject addresses of the form symbol+large int. |
2860 | This is because an instruction `sw $4,s+70000' needs to be converted | |
2861 | by the assembler to `lw $at,s($gp);sw $4,70000($at)'. Normally the | |
2862 | assembler would use $at as a temp to load in the large offset. In this | |
2863 | case $at is already in use. We convert such problem addresses to | |
2864 | `la $5,s;sw $4,70000($5)' via LEGITIMIZE_ADDRESS. */ | |
516a2dfd | 2865 | /* ??? SGI Irix 6 assembler fails for CONST address, so reject them. */ |
31c714e3 | 2866 | #define CONSTANT_ADDRESS_P(X) \ |
6eff269e | 2867 | ((GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF \ |
5de1e2ce JW |
2868 | || GET_CODE (X) == CONST_INT || GET_CODE (X) == HIGH \ |
2869 | || (GET_CODE (X) == CONST \ | |
516a2dfd | 2870 | && ! (flag_pic && pic_address_needs_scratch (X)) \ |
a53f72db GRK |
2871 | && (mips_abi == ABI_32 \ |
2872 | || mips_abi == ABI_O64 \ | |
2873 | || mips_abi == ABI_EABI))) \ | |
5de1e2ce | 2874 | && (!HALF_PIC_P () || !HALF_PIC_ADDRESS_P (X))) |
e75b25e7 | 2875 | |
5de1e2ce JW |
2876 | /* Define this, so that when PIC, reload won't try to reload invalid |
2877 | addresses which require two reload registers. */ | |
2878 | ||
2879 | #define LEGITIMATE_PIC_OPERAND_P(X) (! pic_address_needs_scratch (X)) | |
e75b25e7 MM |
2880 | |
2881 | /* Nonzero if the constant value X is a legitimate general operand. | |
2882 | It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. | |
2883 | ||
2884 | At present, GAS doesn't understand li.[sd], so don't allow it | |
2885 | to be generated at present. Also, the MIPS assembler does not | |
2886 | grok li.d Infinity. */ | |
2887 | ||
7dac2f89 | 2888 | /* ??? SGI Irix 6 assembler fails for CONST address, so reject them. |
8e466531 GRK |
2889 | Note that the Irix 6 assembler problem may already be fixed. |
2890 | Note also that the GET_CODE (X) == CONST test catches the mips16 | |
2891 | gp pseudo reg (see mips16_gp_pseudo_reg) deciding it is not | |
2892 | a LEGITIMATE_CONSTANT. If we ever want mips16 and ABI_N32 or | |
2893 | ABI_64 to work together, we'll need to fix this. */ | |
e75b25e7 | 2894 | #define LEGITIMATE_CONSTANT_P(X) \ |
516a2dfd JW |
2895 | ((GET_CODE (X) != CONST_DOUBLE \ |
2896 | || mips_const_double_ok (X, GET_MODE (X))) \ | |
8e466531 GRK |
2897 | && ! (GET_CODE (X) == CONST \ |
2898 | && ! TARGET_GAS \ | |
2899 | && (mips_abi == ABI_N32 \ | |
2900 | || mips_abi == ABI_64)) \ | |
2bcb2ab3 | 2901 | && (! TARGET_MIPS16 || mips16_constant (X, GET_MODE (X), 0, 0))) |
e75b25e7 MM |
2902 | |
2903 | /* A C compound statement that attempts to replace X with a valid | |
2904 | memory address for an operand of mode MODE. WIN will be a C | |
2905 | statement label elsewhere in the code; the macro definition may | |
2906 | use | |
2907 | ||
2908 | GO_IF_LEGITIMATE_ADDRESS (MODE, X, WIN); | |
2909 | ||
2910 | to avoid further processing if the address has become legitimate. | |
2911 | ||
2912 | X will always be the result of a call to `break_out_memory_refs', | |
2913 | and OLDX will be the operand that was given to that function to | |
2914 | produce X. | |
2915 | ||
2916 | The code generated by this macro should not alter the | |
2917 | substructure of X. If it transforms X into a more legitimate | |
2918 | form, it should assign X (which will always be a C variable) a | |
2919 | new value. | |
2920 | ||
2921 | It is not necessary for this macro to come up with a legitimate | |
2922 | address. The compiler has standard ways of doing so in all | |
2923 | cases. In fact, it is safe for this macro to do nothing. But | |
2649b2ee | 2924 | often a machine-dependent strategy can generate better code. |
e75b25e7 | 2925 | |
2649b2ee MM |
2926 | For the MIPS, transform: |
2927 | ||
2928 | memory(X + <large int>) | |
2929 | ||
2930 | into: | |
2931 | ||
2932 | Y = <large int> & ~0x7fff; | |
2933 | Z = X + Y | |
2934 | memory (Z + (<large int> & 0x7fff)); | |
2935 | ||
5de1e2ce JW |
2936 | This is for CSE to find several similar references, and only use one Z. |
2937 | ||
2938 | When PIC, convert addresses of the form memory (symbol+large int) to | |
2939 | memory (reg+large int). */ | |
7dac2f89 | 2940 | |
2649b2ee MM |
2941 | |
2942 | #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) \ | |
2943 | { \ | |
2944 | register rtx xinsn = (X); \ | |
2945 | \ | |
2946 | if (TARGET_DEBUG_B_MODE) \ | |
2947 | { \ | |
2948 | GO_PRINTF ("\n========== LEGITIMIZE_ADDRESS\n"); \ | |
2949 | GO_DEBUG_RTX (xinsn); \ | |
2950 | } \ | |
2951 | \ | |
ce57d6f4 JW |
2952 | if (mips_split_addresses && mips_check_split (X, MODE)) \ |
2953 | { \ | |
2954 | /* ??? Is this ever executed? */ \ | |
c5c76735 JL |
2955 | X = gen_rtx_LO_SUM (Pmode, \ |
2956 | copy_to_mode_reg (Pmode, \ | |
2957 | gen_rtx (HIGH, Pmode, X)), \ | |
2958 | X); \ | |
ce57d6f4 JW |
2959 | goto WIN; \ |
2960 | } \ | |
2961 | \ | |
516a2dfd JW |
2962 | if (GET_CODE (xinsn) == CONST \ |
2963 | && ((flag_pic && pic_address_needs_scratch (xinsn)) \ | |
2964 | /* ??? SGI's Irix 6 assembler can't handle CONST. */ \ | |
a53f72db GRK |
2965 | || (mips_abi != ABI_32 \ |
2966 | && mips_abi != ABI_O64 \ | |
2967 | && mips_abi != ABI_EABI))) \ | |
516a2dfd JW |
2968 | { \ |
2969 | rtx ptr_reg = gen_reg_rtx (Pmode); \ | |
2970 | rtx constant = XEXP (XEXP (xinsn, 0), 1); \ | |
2971 | \ | |
2972 | emit_move_insn (ptr_reg, XEXP (XEXP (xinsn, 0), 0)); \ | |
2973 | \ | |
c5c76735 | 2974 | X = gen_rtx_PLUS (Pmode, ptr_reg, constant); \ |
516a2dfd JW |
2975 | if (SMALL_INT (constant)) \ |
2976 | goto WIN; \ | |
2977 | /* Otherwise we fall through so the code below will fix the \ | |
2978 | constant. */ \ | |
2979 | xinsn = X; \ | |
2980 | } \ | |
2981 | \ | |
b3de0f1f | 2982 | if (GET_CODE (xinsn) == PLUS) \ |
2649b2ee MM |
2983 | { \ |
2984 | register rtx xplus0 = XEXP (xinsn, 0); \ | |
2985 | register rtx xplus1 = XEXP (xinsn, 1); \ | |
2986 | register enum rtx_code code0 = GET_CODE (xplus0); \ | |
2987 | register enum rtx_code code1 = GET_CODE (xplus1); \ | |
2988 | \ | |
2989 | if (code0 != REG && code1 == REG) \ | |
2990 | { \ | |
2991 | xplus0 = XEXP (xinsn, 1); \ | |
2992 | xplus1 = XEXP (xinsn, 0); \ | |
2993 | code0 = GET_CODE (xplus0); \ | |
2994 | code1 = GET_CODE (xplus1); \ | |
2995 | } \ | |
2996 | \ | |
2bcb2ab3 | 2997 | if (code0 == REG && REG_MODE_OK_FOR_BASE_P (xplus0, MODE) \ |
2649b2ee MM |
2998 | && code1 == CONST_INT && !SMALL_INT (xplus1)) \ |
2999 | { \ | |
3000 | rtx int_reg = gen_reg_rtx (Pmode); \ | |
3001 | rtx ptr_reg = gen_reg_rtx (Pmode); \ | |
3002 | \ | |
3003 | emit_move_insn (int_reg, \ | |
3004 | GEN_INT (INTVAL (xplus1) & ~ 0x7fff)); \ | |
3005 | \ | |
c5c76735 JL |
3006 | emit_insn (gen_rtx_SET (VOIDmode, \ |
3007 | ptr_reg, \ | |
3008 | gen_rtx_PLUS (Pmode, xplus0, int_reg))); \ | |
2649b2ee | 3009 | \ |
8da665d5 | 3010 | X = plus_constant (ptr_reg, INTVAL (xplus1) & 0x7fff); \ |
2649b2ee MM |
3011 | goto WIN; \ |
3012 | } \ | |
3013 | } \ | |
3014 | \ | |
3015 | if (TARGET_DEBUG_B_MODE) \ | |
3016 | GO_PRINTF ("LEGITIMIZE_ADDRESS could not fix.\n"); \ | |
3017 | } | |
e75b25e7 MM |
3018 | |
3019 | ||
3020 | /* A C statement or compound statement with a conditional `goto | |
3021 | LABEL;' executed if memory address X (an RTX) can have different | |
3022 | meanings depending on the machine mode of the memory reference it | |
3023 | is used for. | |
3024 | ||
3025 | Autoincrement and autodecrement addresses typically have | |
3026 | mode-dependent effects because the amount of the increment or | |
3027 | decrement is the size of the operand being addressed. Some | |
3028 | machines have other mode-dependent addresses. Many RISC machines | |
3029 | have no mode-dependent addresses. | |
3030 | ||
3031 | You may assume that ADDR is a valid address for the machine. */ | |
3032 | ||
3033 | #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) {} | |
3034 | ||
3035 | ||
3036 | /* Define this macro if references to a symbol must be treated | |
3037 | differently depending on something about the variable or | |
3038 | function named by the symbol (such as what section it is in). | |
3039 | ||
3040 | The macro definition, if any, is executed immediately after the | |
7dac2f89 | 3041 | rtl for DECL has been created and stored in `DECL_RTL (DECL)'. |
e75b25e7 MM |
3042 | The value of the rtl will be a `mem' whose address is a |
3043 | `symbol_ref'. | |
3044 | ||
3045 | The usual thing for this macro to do is to a flag in the | |
3046 | `symbol_ref' (such as `SYMBOL_REF_FLAG') or to store a modified | |
3047 | name string in the `symbol_ref' (if one bit is not enough | |
3048 | information). | |
3049 | ||
3050 | The best way to modify the name string is by adding text to the | |
7dac2f89 | 3051 | beginning, with suitable punctuation to prevent any ambiguity. |
e75b25e7 MM |
3052 | Allocate the new name in `saveable_obstack'. You will have to |
3053 | modify `ASM_OUTPUT_LABELREF' to remove and decode the added text | |
3054 | and output the name accordingly. | |
3055 | ||
3056 | You can also check the information stored in the `symbol_ref' in | |
3057 | the definition of `GO_IF_LEGITIMATE_ADDRESS' or | |
2bcb2ab3 GK |
3058 | `PRINT_OPERAND_ADDRESS'. |
3059 | ||
3060 | When optimizing for the $gp pointer, SYMBOL_REF_FLAG is set for all | |
3061 | small objects. | |
3062 | ||
3063 | When generating embedded PIC code, SYMBOL_REF_FLAG is set for | |
3064 | symbols which are not in the .text section. | |
3065 | ||
3066 | When generating mips16 code, SYMBOL_REF_FLAG is set for string | |
3067 | constants which are put in the .text section. We also record the | |
3068 | total length of all such strings; this total is used to decide | |
3069 | whether we need to split the constant table, and need not be | |
7dac2f89 | 3070 | precisely correct. |
a9e3e611 GRK |
3071 | |
3072 | When not mips16 code nor embedded PIC, if a symbol is in a | |
3073 | gp addresable section, SYMBOL_REF_FLAG is set prevent gcc from | |
3074 | splitting the reference so that gas can generate a gp relative | |
3075 | reference. | |
5f680ab6 DD |
3076 | |
3077 | When TARGET_EMBEDDED_DATA is set, we assume that all const | |
3078 | variables will be stored in ROM, which is too far from %gp to use | |
3079 | %gprel addressing. Note that (1) we include "extern const" | |
3080 | variables in this, which mips_select_section doesn't, and (2) we | |
3081 | can't always tell if they're really const (they might be const C++ | |
3082 | objects with non-const constructors), so we err on the side of | |
3083 | caution and won't use %gprel anyway (otherwise we'd have to defer | |
3084 | this decision to the linker/loader). The handling of extern consts | |
3085 | is why the DECL_INITIAL macros differ from mips_select_section. | |
3086 | ||
3087 | If you are changing this macro, you should look at | |
3088 | mips_select_section and see if it needs a similar change. */ | |
e75b25e7 MM |
3089 | |
3090 | #define ENCODE_SECTION_INFO(DECL) \ | |
3091 | do \ | |
3092 | { \ | |
2bcb2ab3 GK |
3093 | if (TARGET_MIPS16) \ |
3094 | { \ | |
3095 | if (TREE_CODE (DECL) == STRING_CST \ | |
52ecdfda JW |
3096 | && ! flag_writable_strings \ |
3097 | /* If this string is from a function, and the function will \ | |
3098 | go in a gnu linkonce section, then we can't directly \ | |
3099 | access the string. This gets an assembler error \ | |
3100 | "unsupported PC relative reference to different section".\ | |
3101 | If we modify SELECT_SECTION to put it in function_section\ | |
3102 | instead of text_section, it still fails because \ | |
3103 | DECL_SECTION_NAME isn't set until assemble_start_function.\ | |
3104 | If we fix that, it still fails because strings are shared\ | |
3105 | among multiple functions, and we have cross section \ | |
3106 | references again. We force it to work by putting string \ | |
3107 | addresses in the constant pool and indirecting. */ \ | |
3108 | && (! current_function_decl \ | |
7c262518 | 3109 | || ! DECL_ONE_ONLY (current_function_decl))) \ |
2bcb2ab3 GK |
3110 | { \ |
3111 | SYMBOL_REF_FLAG (XEXP (TREE_CST_RTL (DECL), 0)) = 1; \ | |
3112 | mips_string_length += TREE_STRING_LENGTH (DECL); \ | |
3113 | } \ | |
3114 | } \ | |
5f680ab6 DD |
3115 | \ |
3116 | if (TARGET_EMBEDDED_DATA \ | |
3117 | && (TREE_CODE (DECL) == VAR_DECL \ | |
3118 | && TREE_READONLY (DECL) && !TREE_SIDE_EFFECTS (DECL)) \ | |
3119 | && (!DECL_INITIAL (DECL) \ | |
3120 | || TREE_CONSTANT (DECL_INITIAL (DECL)))) \ | |
3121 | { \ | |
3122 | SYMBOL_REF_FLAG (XEXP (DECL_RTL (DECL), 0)) = 0; \ | |
3123 | } \ | |
3124 | \ | |
3125 | else if (TARGET_EMBEDDED_PIC) \ | |
92544bdf ILT |
3126 | { \ |
3127 | if (TREE_CODE (DECL) == VAR_DECL) \ | |
3128 | SYMBOL_REF_FLAG (XEXP (DECL_RTL (DECL), 0)) = 1; \ | |
3129 | else if (TREE_CODE (DECL) == FUNCTION_DECL) \ | |
3130 | SYMBOL_REF_FLAG (XEXP (DECL_RTL (DECL), 0)) = 0; \ | |
3131 | else if (TREE_CODE (DECL) == STRING_CST \ | |
3132 | && ! flag_writable_strings) \ | |
3133 | SYMBOL_REF_FLAG (XEXP (TREE_CST_RTL (DECL), 0)) = 0; \ | |
3134 | else \ | |
3135 | SYMBOL_REF_FLAG (XEXP (TREE_CST_RTL (DECL), 0)) = 1; \ | |
3136 | } \ | |
3137 | \ | |
a9e3e611 GRK |
3138 | else if (TREE_CODE (DECL) == VAR_DECL \ |
3139 | && DECL_SECTION_NAME (DECL) != NULL_TREE \ | |
3140 | && (0 == strcmp (TREE_STRING_POINTER (DECL_SECTION_NAME (DECL)), \ | |
3141 | ".sdata") \ | |
3142 | || 0 == strcmp (TREE_STRING_POINTER (DECL_SECTION_NAME (DECL)),\ | |
3143 | ".sbss"))) \ | |
3144 | { \ | |
3145 | SYMBOL_REF_FLAG (XEXP (DECL_RTL (DECL), 0)) = 1; \ | |
3146 | } \ | |
3147 | \ | |
13b6b42c JL |
3148 | /* We can not perform GP optimizations on variables which are in \ |
3149 | specific sections, except for .sdata and .sbss which are \ | |
3150 | handled above. */ \ | |
3151 | else if (TARGET_GP_OPT && TREE_CODE (DECL) == VAR_DECL \ | |
3152 | && DECL_SECTION_NAME (DECL) == NULL_TREE) \ | |
e75b25e7 MM |
3153 | { \ |
3154 | int size = int_size_in_bytes (TREE_TYPE (DECL)); \ | |
3155 | \ | |
3156 | if (size > 0 && size <= mips_section_threshold) \ | |
3157 | SYMBOL_REF_FLAG (XEXP (DECL_RTL (DECL), 0)) = 1; \ | |
3158 | } \ | |
3159 | \ | |
31c714e3 | 3160 | else if (HALF_PIC_P ()) \ |
6e92f4b6 KG |
3161 | { \ |
3162 | HALF_PIC_ENCODE (DECL); \ | |
3163 | } \ | |
e75b25e7 MM |
3164 | } \ |
3165 | while (0) | |
3166 | ||
9c9e7632 GK |
3167 | /* This handles the magic '..CURRENT_FUNCTION' symbol, which means |
3168 | 'the start of the function that this code is output in'. */ | |
3169 | ||
3170 | #define ASM_OUTPUT_LABELREF(FILE,NAME) \ | |
3171 | if (strcmp (NAME, "..CURRENT_FUNCTION") == 0) \ | |
3172 | asm_fprintf ((FILE), "%U%s", \ | |
3173 | XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); \ | |
3174 | else \ | |
3175 | asm_fprintf ((FILE), "%U%s", (NAME)) | |
3176 | ||
2bcb2ab3 GK |
3177 | /* The mips16 wants the constant pool to be after the function, |
3178 | because the PC relative load instructions use unsigned offsets. */ | |
3179 | ||
3180 | #define CONSTANT_POOL_BEFORE_FUNCTION (! TARGET_MIPS16) | |
3181 | ||
3182 | #define ASM_OUTPUT_POOL_EPILOGUE(FILE, FNNAME, FNDECL, SIZE) \ | |
3183 | mips_string_length = 0; | |
3184 | ||
3185 | #if 0 | |
3186 | /* In mips16 mode, put most string constants after the function. */ | |
3187 | #define CONSTANT_AFTER_FUNCTION_P(tree) \ | |
3188 | (TARGET_MIPS16 && mips16_constant_after_function_p (tree)) | |
3189 | #endif | |
e75b25e7 MM |
3190 | \f |
3191 | /* Specify the machine mode that this machine uses | |
2bcb2ab3 GK |
3192 | for the index in the tablejump instruction. |
3193 | ??? Using HImode in mips16 mode can cause overflow. However, the | |
3194 | overflow is no more likely than the overflow in a branch | |
3195 | instruction. Large functions can currently break in both ways. */ | |
3196 | #define CASE_VECTOR_MODE \ | |
1eeed24e | 3197 | (TARGET_MIPS16 ? HImode : Pmode == DImode ? DImode : SImode) |
2bcb2ab3 GK |
3198 | |
3199 | /* Define as C expression which evaluates to nonzero if the tablejump | |
3200 | instruction expects the table to contain offsets from the address of the | |
3201 | table. | |
3202 | Do not define this if the table should contain absolute addresses. */ | |
3203 | #define CASE_VECTOR_PC_RELATIVE (TARGET_MIPS16) | |
e75b25e7 MM |
3204 | |
3205 | /* Specify the tree operation to be used to convert reals to integers. */ | |
3206 | #define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR | |
3207 | ||
3208 | /* This is the kind of divide that is easiest to do in the general case. */ | |
3209 | #define EASY_DIV_EXPR TRUNC_DIV_EXPR | |
3210 | ||
3211 | /* Define this as 1 if `char' should by default be signed; else as 0. */ | |
6639753e | 3212 | #ifndef DEFAULT_SIGNED_CHAR |
e75b25e7 | 3213 | #define DEFAULT_SIGNED_CHAR 1 |
6639753e | 3214 | #endif |
e75b25e7 MM |
3215 | |
3216 | /* Max number of bytes we can move from memory to memory | |
3217 | in one reasonably fast instruction. */ | |
876c09d3 JW |
3218 | #define MOVE_MAX (TARGET_64BIT ? 8 : 4) |
3219 | #define MAX_MOVE_MAX 8 | |
e75b25e7 MM |
3220 | |
3221 | /* Define this macro as a C expression which is nonzero if | |
3222 | accessing less than a word of memory (i.e. a `char' or a | |
3223 | `short') is no faster than accessing a word of memory, i.e., if | |
3224 | such access require more than one instruction or if there is no | |
3225 | difference in cost between byte and (aligned) word loads. | |
3226 | ||
3227 | On RISC machines, it tends to generate better code to define | |
3228 | this as 1, since it avoids making a QI or HI mode register. */ | |
3229 | #define SLOW_BYTE_ACCESS 1 | |
3230 | ||
3231 | /* We assume that the store-condition-codes instructions store 0 for false | |
3232 | and some other value for true. This is the value stored for true. */ | |
3233 | ||
3234 | #define STORE_FLAG_VALUE 1 | |
3235 | ||
3236 | /* Define this if zero-extension is slow (more than one real instruction). */ | |
3237 | #define SLOW_ZERO_EXTEND | |
3238 | ||
d969caf8 RK |
3239 | /* Define this to be nonzero if shift instructions ignore all but the low-order |
3240 | few bits. */ | |
3241 | #define SHIFT_COUNT_TRUNCATED 1 | |
e75b25e7 MM |
3242 | |
3243 | /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits | |
3244 | is done just by pretending it is already truncated. */ | |
876c09d3 JW |
3245 | /* In 64 bit mode, 32 bit instructions require that register values be properly |
3246 | sign-extended to 64 bits. As a result, a truncate is not a no-op if it | |
3247 | converts a value >32 bits to a value <32 bits. */ | |
3248 | /* ??? This results in inefficient code for 64 bit to 32 conversions. | |
3249 | Something needs to be done about this. Perhaps not use any 32 bit | |
3250 | instructions? Perhaps use PROMOTE_MODE? */ | |
3251 | #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) \ | |
3252 | (TARGET_64BIT ? ((INPREC) <= 32 || (OUTPREC) > 32) : 1) | |
e75b25e7 | 3253 | |
e75b25e7 MM |
3254 | /* Specify the machine mode that pointers have. |
3255 | After generation of rtl, the compiler makes no further distinction | |
fb1bf66d GRK |
3256 | between pointers and any other objects of this machine mode. |
3257 | ||
3258 | For MIPS we make pointers are the smaller of longs and gp-registers. */ | |
876c09d3 | 3259 | |
1eeed24e | 3260 | #ifndef Pmode |
8ca47902 | 3261 | #define Pmode ((TARGET_LONG64 && TARGET_64BIT) ? DImode : SImode) |
1eeed24e | 3262 | #endif |
e75b25e7 MM |
3263 | |
3264 | /* A function address in a call instruction | |
3265 | is a word address (for indexing purposes) | |
3266 | so give the MEM rtx a words's mode. */ | |
3267 | ||
1eeed24e | 3268 | #define FUNCTION_MODE (Pmode == DImode ? DImode : SImode) |
e75b25e7 MM |
3269 | |
3270 | /* Define TARGET_MEM_FUNCTIONS if we want to use calls to memcpy and | |
3271 | memset, instead of the BSD functions bcopy and bzero. */ | |
3272 | ||
3273 | #if defined(MIPS_SYSV) || defined(OSF_OS) | |
3274 | #define TARGET_MEM_FUNCTIONS | |
3275 | #endif | |
3276 | ||
3277 | \f | |
3278 | /* A part of a C `switch' statement that describes the relative | |
3279 | costs of constant RTL expressions. It must contain `case' | |
3280 | labels for expression codes `const_int', `const', `symbol_ref', | |
3281 | `label_ref' and `const_double'. Each case must ultimately reach | |
3282 | a `return' statement to return the relative cost of the use of | |
3283 | that kind of constant value in an expression. The cost may | |
3284 | depend on the precise value of the constant, which is available | |
3285 | for examination in X. | |
3286 | ||
3287 | CODE is the expression code--redundant, since it can be obtained | |
3288 | with `GET_CODE (X)'. */ | |
3289 | ||
def9623c | 3290 | #define CONST_COSTS(X,CODE,OUTER_CODE) \ |
e75b25e7 | 3291 | case CONST_INT: \ |
2bcb2ab3 GK |
3292 | if (! TARGET_MIPS16) \ |
3293 | { \ | |
3294 | /* Always return 0, since we don't have different sized \ | |
3295 | instructions, hence different costs according to Richard \ | |
3296 | Kenner */ \ | |
3297 | return 0; \ | |
3298 | } \ | |
3299 | if ((OUTER_CODE) == SET) \ | |
3300 | { \ | |
3301 | if (INTVAL (X) >= 0 && INTVAL (X) < 0x100) \ | |
3302 | return 0; \ | |
3303 | else if ((INTVAL (X) >= 0 && INTVAL (X) < 0x10000) \ | |
3304 | || (INTVAL (X) < 0 && INTVAL (X) > -0x100)) \ | |
3305 | return COSTS_N_INSNS (1); \ | |
3306 | else \ | |
3307 | return COSTS_N_INSNS (2); \ | |
3308 | } \ | |
3309 | /* A PLUS could be an address. We don't want to force an address \ | |
3310 | to use a register, so accept any signed 16 bit value without \ | |
3311 | complaint. */ \ | |
3312 | if ((OUTER_CODE) == PLUS \ | |
3313 | && INTVAL (X) >= -0x8000 && INTVAL (X) < 0x8000) \ | |
3314 | return 0; \ | |
3315 | /* A number between 1 and 8 inclusive is efficient for a shift. \ | |
3316 | Otherwise, we will need an extended instruction. */ \ | |
3317 | if ((OUTER_CODE) == ASHIFT || (OUTER_CODE) == ASHIFTRT \ | |
3318 | || (OUTER_CODE) == LSHIFTRT) \ | |
3319 | { \ | |
3320 | if (INTVAL (X) >= 1 && INTVAL (X) <= 8) \ | |
3321 | return 0; \ | |
3322 | return COSTS_N_INSNS (1); \ | |
3323 | } \ | |
3324 | /* We can use cmpi for an xor with an unsigned 16 bit value. */ \ | |
3325 | if ((OUTER_CODE) == XOR \ | |
3326 | && INTVAL (X) >= 0 && INTVAL (X) < 0x10000) \ | |
3327 | return 0; \ | |
3328 | /* We may be able to use slt or sltu for a comparison with a \ | |
3329 | signed 16 bit value. (The boundary conditions aren't quite \ | |
3330 | right, but this is just a heuristic anyhow.) */ \ | |
3331 | if (((OUTER_CODE) == LT || (OUTER_CODE) == LE \ | |
3332 | || (OUTER_CODE) == GE || (OUTER_CODE) == GT \ | |
3333 | || (OUTER_CODE) == LTU || (OUTER_CODE) == LEU \ | |
3334 | || (OUTER_CODE) == GEU || (OUTER_CODE) == GTU) \ | |
3335 | && INTVAL (X) >= -0x8000 && INTVAL (X) < 0x8000) \ | |
3336 | return 0; \ | |
3337 | /* Equality comparisons with 0 are cheap. */ \ | |
3338 | if (((OUTER_CODE) == EQ || (OUTER_CODE) == NE) \ | |
3339 | && INTVAL (X) == 0) \ | |
3340 | return 0; \ | |
3341 | \ | |
3342 | /* Otherwise, work out the cost to load the value into a \ | |
3343 | register. */ \ | |
3344 | if (INTVAL (X) >= 0 && INTVAL (X) < 0x100) \ | |
3345 | return COSTS_N_INSNS (1); \ | |
3346 | else if ((INTVAL (X) >= 0 && INTVAL (X) < 0x10000) \ | |
3347 | || (INTVAL (X) < 0 && INTVAL (X) > -0x100)) \ | |
3348 | return COSTS_N_INSNS (2); \ | |
3349 | else \ | |
3350 | return COSTS_N_INSNS (3); \ | |
e75b25e7 MM |
3351 | \ |
3352 | case LABEL_REF: \ | |
3353 | return COSTS_N_INSNS (2); \ | |
3354 | \ | |
3355 | case CONST: \ | |
3356 | { \ | |
31c714e3 | 3357 | rtx offset = const0_rtx; \ |
876c09d3 | 3358 | rtx symref = eliminate_constant_term (XEXP (X, 0), &offset); \ |
e75b25e7 | 3359 | \ |
2bcb2ab3 GK |
3360 | if (TARGET_MIPS16 && mips16_gp_offset_p (X)) \ |
3361 | { \ | |
3362 | /* Treat this like a signed 16 bit CONST_INT. */ \ | |
3363 | if ((OUTER_CODE) == PLUS) \ | |
3364 | return 0; \ | |
3365 | else if ((OUTER_CODE) == SET) \ | |
3366 | return COSTS_N_INSNS (1); \ | |
3367 | else \ | |
3368 | return COSTS_N_INSNS (2); \ | |
3369 | } \ | |
3370 | \ | |
e75b25e7 MM |
3371 | if (GET_CODE (symref) == LABEL_REF) \ |
3372 | return COSTS_N_INSNS (2); \ | |
3373 | \ | |
3374 | if (GET_CODE (symref) != SYMBOL_REF) \ | |
3375 | return COSTS_N_INSNS (4); \ | |
3376 | \ | |
3377 | /* let's be paranoid.... */ \ | |
31c714e3 | 3378 | if (INTVAL (offset) < -32768 || INTVAL (offset) > 32767) \ |
e75b25e7 MM |
3379 | return COSTS_N_INSNS (2); \ |
3380 | \ | |
3381 | return COSTS_N_INSNS (SYMBOL_REF_FLAG (symref) ? 1 : 2); \ | |
3382 | } \ | |
3383 | \ | |
3384 | case SYMBOL_REF: \ | |
3385 | return COSTS_N_INSNS (SYMBOL_REF_FLAG (X) ? 1 : 2); \ | |
3386 | \ | |
3387 | case CONST_DOUBLE: \ | |
96abdcb1 ILT |
3388 | { \ |
3389 | rtx high, low; \ | |
2bcb2ab3 GK |
3390 | if (TARGET_MIPS16) \ |
3391 | return COSTS_N_INSNS (4); \ | |
96abdcb1 ILT |
3392 | split_double (X, &high, &low); \ |
3393 | return COSTS_N_INSNS ((high == CONST0_RTX (GET_MODE (high)) \ | |
3394 | || low == CONST0_RTX (GET_MODE (low))) \ | |
3395 | ? 2 : 4); \ | |
3396 | } | |
e75b25e7 MM |
3397 | |
3398 | /* Like `CONST_COSTS' but applies to nonconstant RTL expressions. | |
3399 | This can be used, for example, to indicate how costly a multiply | |
3400 | instruction is. In writing this macro, you can use the construct | |
3401 | `COSTS_N_INSNS (N)' to specify a cost equal to N fast instructions. | |
3402 | ||
3403 | This macro is optional; do not define it if the default cost | |
3404 | assumptions are adequate for the target machine. | |
3405 | ||
3406 | If -mdebugd is used, change the multiply cost to 2, so multiply by | |
3407 | a constant isn't converted to a series of shifts. This helps | |
3408 | strength reduction, and also makes it easier to identify what the | |
3409 | compiler is doing. */ | |
3410 | ||
516a2dfd | 3411 | /* ??? Fix this to be right for the R8000. */ |
def9623c | 3412 | #define RTX_COSTS(X,CODE,OUTER_CODE) \ |
e75b25e7 MM |
3413 | case MEM: \ |
3414 | { \ | |
3415 | int num_words = (GET_MODE_SIZE (GET_MODE (X)) > UNITS_PER_WORD) ? 2 : 1; \ | |
3416 | if (simple_memory_operand (X, GET_MODE (X))) \ | |
3417 | return COSTS_N_INSNS (num_words); \ | |
3418 | \ | |
3419 | return COSTS_N_INSNS (2*num_words); \ | |
3420 | } \ | |
3421 | \ | |
3422 | case FFS: \ | |
3423 | return COSTS_N_INSNS (6); \ | |
3424 | \ | |
3425 | case NOT: \ | |
876c09d3 | 3426 | return COSTS_N_INSNS ((GET_MODE (X) == DImode && !TARGET_64BIT) ? 2 : 1); \ |
e75b25e7 MM |
3427 | \ |
3428 | case AND: \ | |
3429 | case IOR: \ | |
3430 | case XOR: \ | |
876c09d3 | 3431 | if (GET_MODE (X) == DImode && !TARGET_64BIT) \ |
e75b25e7 MM |
3432 | return COSTS_N_INSNS (2); \ |
3433 | \ | |
2bcb2ab3 | 3434 | break; \ |
e75b25e7 MM |
3435 | \ |
3436 | case ASHIFT: \ | |
3437 | case ASHIFTRT: \ | |
e75b25e7 | 3438 | case LSHIFTRT: \ |
876c09d3 JW |
3439 | if (GET_MODE (X) == DImode && !TARGET_64BIT) \ |
3440 | return COSTS_N_INSNS ((GET_CODE (XEXP (X, 1)) == CONST_INT) ? 4 : 12); \ | |
e75b25e7 | 3441 | \ |
2bcb2ab3 | 3442 | break; \ |
e75b25e7 MM |
3443 | \ |
3444 | case ABS: \ | |
3445 | { \ | |
3446 | enum machine_mode xmode = GET_MODE (X); \ | |
3447 | if (xmode == SFmode || xmode == DFmode) \ | |
3448 | return COSTS_N_INSNS (1); \ | |
3449 | \ | |
3450 | return COSTS_N_INSNS (4); \ | |
3451 | } \ | |
3452 | \ | |
3453 | case PLUS: \ | |
3454 | case MINUS: \ | |
3455 | { \ | |
3456 | enum machine_mode xmode = GET_MODE (X); \ | |
3457 | if (xmode == SFmode || xmode == DFmode) \ | |
9a863c83 | 3458 | { \ |
7dac2f89 EC |
3459 | if (TUNE_MIPS3000 \ |
3460 | || TUNE_MIPS3900) \ | |
9a863c83 | 3461 | return COSTS_N_INSNS (2); \ |
7dac2f89 | 3462 | else if (TUNE_MIPS6000) \ |
9a863c83 JW |
3463 | return COSTS_N_INSNS (3); \ |
3464 | else \ | |
3465 | return COSTS_N_INSNS (6); \ | |
3466 | } \ | |
e75b25e7 | 3467 | \ |
876c09d3 | 3468 | if (xmode == DImode && !TARGET_64BIT) \ |
e75b25e7 MM |
3469 | return COSTS_N_INSNS (4); \ |
3470 | \ | |
2bcb2ab3 | 3471 | break; \ |
e75b25e7 MM |
3472 | } \ |
3473 | \ | |
3474 | case NEG: \ | |
2bcb2ab3 GK |
3475 | if (GET_MODE (X) == DImode && !TARGET_64BIT) \ |
3476 | return 4; \ | |
3477 | \ | |
3478 | break; \ | |
e75b25e7 MM |
3479 | \ |
3480 | case MULT: \ | |
3481 | { \ | |
3482 | enum machine_mode xmode = GET_MODE (X); \ | |
3483 | if (xmode == SFmode) \ | |
9a863c83 | 3484 | { \ |
7dac2f89 EC |
3485 | if (TUNE_MIPS3000 \ |
3486 | || TUNE_MIPS3900 \ | |
3487 | || TUNE_MIPS5000) \ | |
9a863c83 | 3488 | return COSTS_N_INSNS (4); \ |
7dac2f89 | 3489 | else if (TUNE_MIPS6000) \ |
9a863c83 JW |
3490 | return COSTS_N_INSNS (5); \ |
3491 | else \ | |
3492 | return COSTS_N_INSNS (7); \ | |
3493 | } \ | |
e75b25e7 MM |
3494 | \ |
3495 | if (xmode == DFmode) \ | |
9a863c83 | 3496 | { \ |
7dac2f89 EC |
3497 | if (TUNE_MIPS3000 \ |
3498 | || TUNE_MIPS3900 \ | |
3499 | || TUNE_MIPS5000) \ | |
9a863c83 | 3500 | return COSTS_N_INSNS (5); \ |
7dac2f89 | 3501 | else if (TUNE_MIPS6000) \ |
9a863c83 JW |
3502 | return COSTS_N_INSNS (6); \ |
3503 | else \ | |
3504 | return COSTS_N_INSNS (8); \ | |
3505 | } \ | |
e75b25e7 | 3506 | \ |
7dac2f89 | 3507 | if (TUNE_MIPS3000) \ |
9a863c83 | 3508 | return COSTS_N_INSNS (12); \ |
7dac2f89 | 3509 | else if (TUNE_MIPS3900) \ |
e9a25f70 | 3510 | return COSTS_N_INSNS (2); \ |
7dac2f89 | 3511 | else if (TUNE_MIPS6000) \ |
9a863c83 | 3512 | return COSTS_N_INSNS (17); \ |
7dac2f89 | 3513 | else if (TUNE_MIPS5000) \ |
b8eb88d0 | 3514 | return COSTS_N_INSNS (5); \ |
9a863c83 JW |
3515 | else \ |
3516 | return COSTS_N_INSNS (10); \ | |
e75b25e7 MM |
3517 | } \ |
3518 | \ | |
3519 | case DIV: \ | |
3520 | case MOD: \ | |
3521 | { \ | |
3522 | enum machine_mode xmode = GET_MODE (X); \ | |
3523 | if (xmode == SFmode) \ | |
9a863c83 | 3524 | { \ |
7dac2f89 EC |
3525 | if (TUNE_MIPS3000 \ |
3526 | || TUNE_MIPS3900) \ | |
9a863c83 | 3527 | return COSTS_N_INSNS (12); \ |
7dac2f89 | 3528 | else if (TUNE_MIPS6000) \ |
9a863c83 JW |
3529 | return COSTS_N_INSNS (15); \ |
3530 | else \ | |
3531 | return COSTS_N_INSNS (23); \ | |
3532 | } \ | |
e75b25e7 MM |
3533 | \ |
3534 | if (xmode == DFmode) \ | |
9a863c83 | 3535 | { \ |
7dac2f89 EC |
3536 | if (TUNE_MIPS3000 \ |
3537 | || TUNE_MIPS3900) \ | |
9a863c83 | 3538 | return COSTS_N_INSNS (19); \ |
7dac2f89 | 3539 | else if (TUNE_MIPS6000) \ |
9a863c83 JW |
3540 | return COSTS_N_INSNS (16); \ |
3541 | else \ | |
3542 | return COSTS_N_INSNS (36); \ | |
3543 | } \ | |
e75b25e7 MM |
3544 | } \ |
3545 | /* fall through */ \ | |
3546 | \ | |
3547 | case UDIV: \ | |
3548 | case UMOD: \ | |
7dac2f89 EC |
3549 | if (TUNE_MIPS3000 \ |
3550 | || TUNE_MIPS3900) \ | |
9a863c83 | 3551 | return COSTS_N_INSNS (35); \ |
7dac2f89 | 3552 | else if (TUNE_MIPS6000) \ |
9a863c83 | 3553 | return COSTS_N_INSNS (38); \ |
7dac2f89 | 3554 | else if (TUNE_MIPS5000) \ |
b8eb88d0 | 3555 | return COSTS_N_INSNS (36); \ |
9a863c83 | 3556 | else \ |
1a4fa807 ILT |
3557 | return COSTS_N_INSNS (69); \ |
3558 | \ | |
3559 | case SIGN_EXTEND: \ | |
3560 | /* A sign extend from SImode to DImode in 64 bit mode is often \ | |
3561 | zero instructions, because the result can often be used \ | |
3562 | directly by another instruction; we'll call it one. */ \ | |
3563 | if (TARGET_64BIT && GET_MODE (X) == DImode \ | |
3564 | && GET_MODE (XEXP (X, 0)) == SImode) \ | |
3565 | return COSTS_N_INSNS (1); \ | |
3566 | else \ | |
3567 | return COSTS_N_INSNS (2); \ | |
3568 | \ | |
3569 | case ZERO_EXTEND: \ | |
3570 | if (TARGET_64BIT && GET_MODE (X) == DImode \ | |
3571 | && GET_MODE (XEXP (X, 0)) == SImode) \ | |
3572 | return COSTS_N_INSNS (2); \ | |
3573 | else \ | |
3574 | return COSTS_N_INSNS (1); | |
e75b25e7 MM |
3575 | |
3576 | /* An expression giving the cost of an addressing mode that | |
3577 | contains ADDRESS. If not defined, the cost is computed from the | |
3578 | form of the ADDRESS expression and the `CONST_COSTS' values. | |
3579 | ||
3580 | For most CISC machines, the default cost is a good approximation | |
3581 | of the true cost of the addressing mode. However, on RISC | |
3582 | machines, all instructions normally have the same length and | |
3583 | execution time. Hence all addresses will have equal costs. | |
3584 | ||
3585 | In cases where more than one form of an address is known, the | |
3586 | form with the lowest cost will be used. If multiple forms have | |
3587 | the same, lowest, cost, the one that is the most complex will be | |
3588 | used. | |
3589 | ||
3590 | For example, suppose an address that is equal to the sum of a | |
7dac2f89 | 3591 | register and a constant is used twice in the same basic block. |
e75b25e7 MM |
3592 | When this macro is not defined, the address will be computed in |
3593 | a register and memory references will be indirect through that | |
3594 | register. On machines where the cost of the addressing mode | |
3595 | containing the sum is no higher than that of a simple indirect | |
3596 | reference, this will produce an additional instruction and | |
3597 | possibly require an additional register. Proper specification | |
3598 | of this macro eliminates this overhead for such machines. | |
3599 | ||
3600 | Similar use of this macro is made in strength reduction of loops. | |
3601 | ||
3602 | ADDRESS need not be valid as an address. In such a case, the | |
3603 | cost is not relevant and can be any value; invalid addresses | |
3604 | need not be assigned a different cost. | |
3605 | ||
3606 | On machines where an address involving more than one register is | |
3607 | as cheap as an address computation involving only one register, | |
3608 | defining `ADDRESS_COST' to reflect this can cause two registers | |
3609 | to be live over a region of code where only one would have been | |
3610 | if `ADDRESS_COST' were not defined in that manner. This effect | |
7dac2f89 | 3611 | should be considered in the definition of this macro. |
e75b25e7 MM |
3612 | Equivalent costs should probably only be given to addresses with |
3613 | different numbers of registers on machines with lots of registers. | |
3614 | ||
3615 | This macro will normally either not be defined or be defined as | |
3616 | a constant. */ | |
3617 | ||
3618 | #define ADDRESS_COST(ADDR) (REG_P (ADDR) ? 1 : mips_address_cost (ADDR)) | |
3619 | ||
3620 | /* A C expression for the cost of moving data from a register in | |
3621 | class FROM to one in class TO. The classes are expressed using | |
3622 | the enumeration values such as `GENERAL_REGS'. A value of 2 is | |
3623 | the default; other values are interpreted relative to that. | |
3624 | ||
3625 | It is not required that the cost always equal 2 when FROM is the | |
3626 | same as TO; on some machines it is expensive to move between | |
3627 | registers if they are not general registers. | |
3628 | ||
3629 | If reload sees an insn consisting of a single `set' between two | |
3630 | hard registers, and if `REGISTER_MOVE_COST' applied to their | |
3631 | classes returns a value of 2, reload does not check to ensure | |
3632 | that the constraints of the insn are met. Setting a cost of | |
3633 | other than 2 will allow reload to verify that the constraints are | |
3634 | met. You should do this if the `movM' pattern's constraints do | |
56dc4d15 JW |
3635 | not allow such copying. |
3636 | ||
3637 | ??? We make make the cost of moving from HI/LO/HILO/MD into general | |
3638 | registers the same as for one of moving general registers to | |
3639 | HI/LO/HILO/MD for TARGET_MIPS16 in order to prevent allocating a | |
3640 | pseudo to HI/LO/HILO/MD. This might hurt optimizations though, it | |
3641 | isn't clear if it is wise. And it might not work in all cases. We | |
3642 | could solve the DImode LO reg problem by using a multiply, just like | |
3643 | reload_{in,out}si. We could solve the SImode/HImode HI reg problem | |
3644 | by using divide instructions. divu puts the remainder in the HI | |
3645 | reg, so doing a divide by -1 will move the value in the HI reg for | |
3646 | all values except -1. We could handle that case by using a signed | |
3647 | divide, e.g. -1 / 2 (or maybe 1 / -2?). We'd have to emit a | |
3648 | compare/branch to test the input value to see which instruction we | |
3649 | need to use. This gets pretty messy, but it is feasible. */ | |
e75b25e7 | 3650 | |
cf011243 | 3651 | #define REGISTER_MOVE_COST(MODE, FROM, TO) \ |
2bcb2ab3 GK |
3652 | ((FROM) == M16_REGS && GR_REG_CLASS_P (TO) ? 2 \ |
3653 | : (FROM) == M16_NA_REGS && GR_REG_CLASS_P (TO) ? 2 \ | |
3654 | : GR_REG_CLASS_P (FROM) && (TO) == M16_REGS ? 2 \ | |
3655 | : GR_REG_CLASS_P (FROM) && (TO) == M16_NA_REGS ? 2 \ | |
3656 | : GR_REG_CLASS_P (FROM) && GR_REG_CLASS_P (TO) ? (TARGET_MIPS16 ? 4 : 2) \ | |
9a863c83 | 3657 | : (FROM) == FP_REGS && (TO) == FP_REGS ? 2 \ |
2bcb2ab3 GK |
3658 | : GR_REG_CLASS_P (FROM) && (TO) == FP_REGS ? 4 \ |
3659 | : (FROM) == FP_REGS && GR_REG_CLASS_P (TO) ? 4 \ | |
225b8835 ILT |
3660 | : (((FROM) == HI_REG || (FROM) == LO_REG \ |
3661 | || (FROM) == MD_REGS || (FROM) == HILO_REG) \ | |
56dc4d15 | 3662 | && GR_REG_CLASS_P (TO)) ? (TARGET_MIPS16 ? 12 : 6) \ |
225b8835 | 3663 | : (((TO) == HI_REG || (TO) == LO_REG \ |
2bcb2ab3 GK |
3664 | || (TO) == MD_REGS || (TO) == HILO_REG) \ |
3665 | && GR_REG_CLASS_P (FROM)) ? (TARGET_MIPS16 ? 12 : 6) \ | |
3666 | : (FROM) == ST_REGS && GR_REG_CLASS_P (TO) ? 4 \ | |
b8eb88d0 | 3667 | : (FROM) == FP_REGS && (TO) == ST_REGS ? 8 \ |
46299de9 | 3668 | : 12) |
e75b25e7 | 3669 | |
516a2dfd | 3670 | /* ??? Fix this to be right for the R8000. */ |
cbd5b9a2 | 3671 | #define MEMORY_MOVE_COST(MODE,CLASS,TO_P) \ |
7dac2f89 | 3672 | (((TUNE_MIPS4000 || TUNE_MIPS6000) ? 6 : 4) \ |
cbd5b9a2 | 3673 | + memory_move_secondary_cost ((MODE), (CLASS), (TO_P))) |
876c09d3 | 3674 | |
7506f491 DE |
3675 | /* Define if copies to/from condition code registers should be avoided. |
3676 | ||
3677 | This is needed for the MIPS because reload_outcc is not complete; | |
3678 | it needs to handle cases where the source is a general or another | |
3679 | condition code register. */ | |
3680 | #define AVOID_CCMODE_COPIES | |
3681 | ||
e75b25e7 MM |
3682 | /* A C expression for the cost of a branch instruction. A value of |
3683 | 1 is the default; other values are interpreted relative to that. */ | |
3684 | ||
516a2dfd | 3685 | /* ??? Fix this to be right for the R8000. */ |
2bcb2ab3 GK |
3686 | #define BRANCH_COST \ |
3687 | ((! TARGET_MIPS16 \ | |
7dac2f89 | 3688 | && (TUNE_MIPS4000 || TUNE_MIPS6000)) \ |
2bcb2ab3 | 3689 | ? 2 : 1) |
e75b25e7 | 3690 | |
9a863c83 JW |
3691 | /* A C statement (sans semicolon) to update the integer variable COST |
3692 | based on the relationship between INSN that is dependent on | |
3693 | DEP_INSN through the dependence LINK. The default is to make no | |
3694 | adjustment to COST. On the MIPS, ignore the cost of anti- and | |
3695 | output-dependencies. */ | |
e75b25e7 | 3696 | |
9a863c83 JW |
3697 | #define ADJUST_COST(INSN,LINK,DEP_INSN,COST) \ |
3698 | if (REG_NOTE_KIND (LINK) != 0) \ | |
3699 | (COST) = 0; /* Anti or output dependence. */ | |
0ff83799 MM |
3700 | |
3701 | /* If defined, modifies the length assigned to instruction INSN as a | |
3702 | function of the context in which it is used. LENGTH is an lvalue | |
3703 | that contains the initially computed length of the insn and should | |
3704 | be updated with the correct length of the insn. */ | |
3705 | #define ADJUST_INSN_LENGTH(INSN, LENGTH) \ | |
3706 | ((LENGTH) = mips_adjust_insn_length ((INSN), (LENGTH))) | |
3707 | ||
e75b25e7 MM |
3708 | \f |
3709 | /* Optionally define this if you have added predicates to | |
3710 | `MACHINE.c'. This macro is called within an initializer of an | |
3711 | array of structures. The first field in the structure is the | |
31c714e3 | 3712 | name of a predicate and the second field is an array of rtl |
e75b25e7 MM |
3713 | codes. For each predicate, list all rtl codes that can be in |
3714 | expressions matched by the predicate. The list should have a | |
3715 | trailing comma. Here is an example of two entries in the list | |
3716 | for a typical RISC machine: | |
3717 | ||
3718 | #define PREDICATE_CODES \ | |
3719 | {"gen_reg_rtx_operand", {SUBREG, REG}}, \ | |
3720 | {"reg_or_short_cint_operand", {SUBREG, REG, CONST_INT}}, | |
3721 | ||
3722 | Defining this macro does not affect the generated code (however, | |
3723 | incorrect definitions that omit an rtl code that may be matched | |
7dac2f89 | 3724 | by the predicate can cause the compiler to malfunction). |
e75b25e7 MM |
3725 | Instead, it allows the table built by `genrecog' to be more |
3726 | compact and efficient, thus speeding up the compiler. The most | |
3727 | important predicates to include in the list specified by this | |
3728 | macro are thoses used in the most insn patterns. */ | |
3729 | ||
3730 | #define PREDICATE_CODES \ | |
3731 | {"uns_arith_operand", { REG, CONST_INT, SUBREG }}, \ | |
3732 | {"arith_operand", { REG, CONST_INT, SUBREG }}, \ | |
3733 | {"arith32_operand", { REG, CONST_INT, SUBREG }}, \ | |
def72bd2 GRK |
3734 | {"reg_or_0_operand", { REG, CONST_INT, CONST_DOUBLE, SUBREG }}, \ |
3735 | {"true_reg_or_0_operand", { REG, CONST_INT, CONST_DOUBLE, SUBREG }}, \ | |
e75b25e7 MM |
3736 | {"small_int", { CONST_INT }}, \ |
3737 | {"large_int", { CONST_INT }}, \ | |
e75b25e7 | 3738 | {"mips_const_double_ok", { CONST_DOUBLE }}, \ |
b8eb88d0 | 3739 | {"const_float_1_operand", { CONST_DOUBLE }}, \ |
e75b25e7 | 3740 | {"simple_memory_operand", { MEM, SUBREG }}, \ |
e75b25e7 MM |
3741 | {"equality_op", { EQ, NE }}, \ |
3742 | {"cmp_op", { EQ, NE, GT, GE, GTU, GEU, LT, LE, \ | |
3743 | LTU, LEU }}, \ | |
a0b6cdee | 3744 | {"trap_cmp_op", { EQ, NE, GE, GEU, LT, LTU }}, \ |
f8634644 | 3745 | {"pc_or_label_operand", { PC, LABEL_REF }}, \ |
ce57d6f4 JW |
3746 | {"call_insn_operand", { CONST_INT, CONST, SYMBOL_REF, REG}}, \ |
3747 | {"move_operand", { CONST_INT, CONST_DOUBLE, CONST, \ | |
3748 | SYMBOL_REF, LABEL_REF, SUBREG, \ | |
3749 | REG, MEM}}, \ | |
1908a152 ILT |
3750 | {"movdi_operand", { CONST_INT, CONST_DOUBLE, CONST, \ |
3751 | SYMBOL_REF, LABEL_REF, SUBREG, REG, \ | |
3752 | MEM, SIGN_EXTEND }}, \ | |
3753 | {"se_register_operand", { SUBREG, REG, SIGN_EXTEND }}, \ | |
def72bd2 | 3754 | {"se_reg_or_0_operand", { REG, CONST_INT, CONST_DOUBLE, SUBREG, \ |
1908a152 ILT |
3755 | SIGN_EXTEND }}, \ |
3756 | {"se_uns_arith_operand", { REG, CONST_INT, SUBREG, \ | |
3757 | SIGN_EXTEND }}, \ | |
3758 | {"se_arith_operand", { REG, CONST_INT, SUBREG, \ | |
3759 | SIGN_EXTEND }}, \ | |
3760 | {"se_nonmemory_operand", { CONST_INT, CONST_DOUBLE, CONST, \ | |
3761 | SYMBOL_REF, LABEL_REF, SUBREG, \ | |
3762 | REG, SIGN_EXTEND }}, \ | |
2bcb2ab3 GK |
3763 | {"se_nonimmediate_operand", { SUBREG, REG, MEM, SIGN_EXTEND }}, \ |
3764 | {"consttable_operand", { LABEL_REF, SYMBOL_REF, CONST_INT, \ | |
cb923660 KR |
3765 | CONST_DOUBLE, CONST }}, \ |
3766 | {"extend_operator", { SIGN_EXTEND, ZERO_EXTEND }}, \ | |
3767 | {"highpart_shift_operator", { ASHIFTRT, LSHIFTRT, ROTATERT, ROTATE }}, | |
3768 | ||
0e7e9155 RH |
3769 | /* A list of predicates that do special things with modes, and so |
3770 | should not elicit warnings for VOIDmode match_operand. */ | |
3771 | ||
3772 | #define SPECIAL_MODE_PREDICATES \ | |
3773 | "pc_or_label_operand", | |
e75b25e7 MM |
3774 | |
3775 | \f | |
3776 | /* If defined, a C statement to be executed just prior to the | |
3777 | output of assembler code for INSN, to modify the extracted | |
3778 | operands so they will be output differently. | |
3779 | ||
3780 | Here the argument OPVEC is the vector containing the operands | |
3781 | extracted from INSN, and NOPERANDS is the number of elements of | |
3782 | the vector which contain meaningful data for this insn. The | |
3783 | contents of this vector are what will be used to convert the | |
3784 | insn template into assembler code, so you can change the | |
3785 | assembler output by changing the contents of the vector. | |
3786 | ||
3787 | We use it to check if the current insn needs a nop in front of it | |
3788 | because of load delays, and also to update the delay slot | |
3789 | statistics. */ | |
3790 | ||
3791 | #define FINAL_PRESCAN_INSN(INSN, OPVEC, NOPERANDS) \ | |
65437fe8 | 3792 | final_prescan_insn (INSN, OPVEC, NOPERANDS) |
e75b25e7 | 3793 | |
e75b25e7 MM |
3794 | \f |
3795 | /* Control the assembler format that we output. */ | |
3796 | ||
3797 | /* Output at beginning of assembler file. | |
3798 | If we are optimizing to use the global pointer, create a temporary | |
3799 | file to hold all of the text stuff, and write it out to the end. | |
3800 | This is needed because the MIPS assembler is evidently one pass, | |
3801 | and if it hasn't seen the relevant .comm/.lcomm/.extern/.sdata | |
3802 | declaration when the code is processed, it generates a two | |
3803 | instruction sequence. */ | |
3804 | ||
44404b8b | 3805 | #undef ASM_FILE_START |
e75b25e7 MM |
3806 | #define ASM_FILE_START(STREAM) mips_asm_file_start (STREAM) |
3807 | ||
3808 | /* Output to assembler file text saying following lines | |
3809 | may contain character constants, extra white space, comments, etc. */ | |
3810 | ||
b2bcb32d | 3811 | #ifndef ASM_APP_ON |
e75b25e7 | 3812 | #define ASM_APP_ON " #APP\n" |
b2bcb32d | 3813 | #endif |
e75b25e7 MM |
3814 | |
3815 | /* Output to assembler file text saying following lines | |
3816 | no longer contain unusual constructs. */ | |
3817 | ||
b2bcb32d | 3818 | #ifndef ASM_APP_OFF |
e75b25e7 | 3819 | #define ASM_APP_OFF " #NO_APP\n" |
b2bcb32d | 3820 | #endif |
e75b25e7 MM |
3821 | |
3822 | /* How to refer to registers in assembler output. | |
3823 | This sequence is indexed by compiler's hard-register-number (see above). | |
3824 | ||
3825 | In order to support the two different conventions for register names, | |
3826 | we use the name of a table set up in mips.c, which is overwritten | |
3827 | if -mrnames is used. */ | |
3828 | ||
3829 | #define REGISTER_NAMES \ | |
3830 | { \ | |
3831 | &mips_reg_names[ 0][0], \ | |
3832 | &mips_reg_names[ 1][0], \ | |
3833 | &mips_reg_names[ 2][0], \ | |
3834 | &mips_reg_names[ 3][0], \ | |
3835 | &mips_reg_names[ 4][0], \ | |
3836 | &mips_reg_names[ 5][0], \ | |
3837 | &mips_reg_names[ 6][0], \ | |
3838 | &mips_reg_names[ 7][0], \ | |
3839 | &mips_reg_names[ 8][0], \ | |
3840 | &mips_reg_names[ 9][0], \ | |
3841 | &mips_reg_names[10][0], \ | |
3842 | &mips_reg_names[11][0], \ | |
3843 | &mips_reg_names[12][0], \ | |
3844 | &mips_reg_names[13][0], \ | |
3845 | &mips_reg_names[14][0], \ | |
3846 | &mips_reg_names[15][0], \ | |
3847 | &mips_reg_names[16][0], \ | |
3848 | &mips_reg_names[17][0], \ | |
3849 | &mips_reg_names[18][0], \ | |
3850 | &mips_reg_names[19][0], \ | |
3851 | &mips_reg_names[20][0], \ | |
3852 | &mips_reg_names[21][0], \ | |
3853 | &mips_reg_names[22][0], \ | |
3854 | &mips_reg_names[23][0], \ | |
3855 | &mips_reg_names[24][0], \ | |
3856 | &mips_reg_names[25][0], \ | |
3857 | &mips_reg_names[26][0], \ | |
3858 | &mips_reg_names[27][0], \ | |
3859 | &mips_reg_names[28][0], \ | |
3860 | &mips_reg_names[29][0], \ | |
3861 | &mips_reg_names[30][0], \ | |
3862 | &mips_reg_names[31][0], \ | |
3863 | &mips_reg_names[32][0], \ | |
3864 | &mips_reg_names[33][0], \ | |
3865 | &mips_reg_names[34][0], \ | |
3866 | &mips_reg_names[35][0], \ | |
3867 | &mips_reg_names[36][0], \ | |
3868 | &mips_reg_names[37][0], \ | |
3869 | &mips_reg_names[38][0], \ | |
3870 | &mips_reg_names[39][0], \ | |
3871 | &mips_reg_names[40][0], \ | |
3872 | &mips_reg_names[41][0], \ | |
3873 | &mips_reg_names[42][0], \ | |
3874 | &mips_reg_names[43][0], \ | |
3875 | &mips_reg_names[44][0], \ | |
3876 | &mips_reg_names[45][0], \ | |
3877 | &mips_reg_names[46][0], \ | |
3878 | &mips_reg_names[47][0], \ | |
3879 | &mips_reg_names[48][0], \ | |
3880 | &mips_reg_names[49][0], \ | |
3881 | &mips_reg_names[50][0], \ | |
3882 | &mips_reg_names[51][0], \ | |
3883 | &mips_reg_names[52][0], \ | |
3884 | &mips_reg_names[53][0], \ | |
3885 | &mips_reg_names[54][0], \ | |
3886 | &mips_reg_names[55][0], \ | |
3887 | &mips_reg_names[56][0], \ | |
3888 | &mips_reg_names[57][0], \ | |
3889 | &mips_reg_names[58][0], \ | |
3890 | &mips_reg_names[59][0], \ | |
3891 | &mips_reg_names[60][0], \ | |
3892 | &mips_reg_names[61][0], \ | |
3893 | &mips_reg_names[62][0], \ | |
3894 | &mips_reg_names[63][0], \ | |
3895 | &mips_reg_names[64][0], \ | |
3896 | &mips_reg_names[65][0], \ | |
3897 | &mips_reg_names[66][0], \ | |
225b8835 | 3898 | &mips_reg_names[67][0], \ |
39dffea3 | 3899 | &mips_reg_names[68][0], \ |
b8eb88d0 ILT |
3900 | &mips_reg_names[69][0], \ |
3901 | &mips_reg_names[70][0], \ | |
3902 | &mips_reg_names[71][0], \ | |
3903 | &mips_reg_names[72][0], \ | |
3904 | &mips_reg_names[73][0], \ | |
3905 | &mips_reg_names[74][0], \ | |
3906 | &mips_reg_names[75][0], \ | |
e75b25e7 MM |
3907 | } |
3908 | ||
46cca58c RS |
3909 | /* print-rtl.c can't use REGISTER_NAMES, since it depends on mips.c. |
3910 | So define this for it. */ | |
3911 | #define DEBUG_REGISTER_NAMES \ | |
3912 | { \ | |
3913 | "$0", "at", "v0", "v1", "a0", "a1", "a2", "a3", \ | |
3914 | "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", \ | |
3915 | "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7", \ | |
3916 | "t8", "t9", "k0", "k1", "gp", "sp", "$fp", "ra", \ | |
3917 | "$f0", "$f1", "$f2", "$f3", "$f4", "$f5", "$f6", "$f7", \ | |
3918 | "$f8", "$f9", "$f10", "$f11", "$f12", "$f13", "$f14", "$f15", \ | |
3919 | "$f16", "$f17", "$f18", "$f19", "$f20", "$f21", "$f22", "$f23", \ | |
3920 | "$f24", "$f25", "$f26", "$f27", "$f28", "$f29", "$f30", "$f31", \ | |
b8eb88d0 ILT |
3921 | "hi", "lo", "accum","$fcc0","$fcc1","$fcc2","$fcc3","$fcc4", \ |
3922 | "$fcc5","$fcc6","$fcc7","$rap" \ | |
46cca58c RS |
3923 | } |
3924 | ||
e75b25e7 MM |
3925 | /* If defined, a C initializer for an array of structures |
3926 | containing a name and a register number. This macro defines | |
3927 | additional names for hard registers, thus allowing the `asm' | |
3928 | option in declarations to refer to registers using alternate | |
3929 | names. | |
3930 | ||
3931 | We define both names for the integer registers here. */ | |
3932 | ||
3933 | #define ADDITIONAL_REGISTER_NAMES \ | |
3934 | { \ | |
3935 | { "$0", 0 + GP_REG_FIRST }, \ | |
3936 | { "$1", 1 + GP_REG_FIRST }, \ | |
3937 | { "$2", 2 + GP_REG_FIRST }, \ | |
3938 | { "$3", 3 + GP_REG_FIRST }, \ | |
3939 | { "$4", 4 + GP_REG_FIRST }, \ | |
3940 | { "$5", 5 + GP_REG_FIRST }, \ | |
3941 | { "$6", 6 + GP_REG_FIRST }, \ | |
3942 | { "$7", 7 + GP_REG_FIRST }, \ | |
3943 | { "$8", 8 + GP_REG_FIRST }, \ | |
3944 | { "$9", 9 + GP_REG_FIRST }, \ | |
3945 | { "$10", 10 + GP_REG_FIRST }, \ | |
3946 | { "$11", 11 + GP_REG_FIRST }, \ | |
3947 | { "$12", 12 + GP_REG_FIRST }, \ | |
3948 | { "$13", 13 + GP_REG_FIRST }, \ | |
3949 | { "$14", 14 + GP_REG_FIRST }, \ | |
3950 | { "$15", 15 + GP_REG_FIRST }, \ | |
3951 | { "$16", 16 + GP_REG_FIRST }, \ | |
3952 | { "$17", 17 + GP_REG_FIRST }, \ | |
3953 | { "$18", 18 + GP_REG_FIRST }, \ | |
3954 | { "$19", 19 + GP_REG_FIRST }, \ | |
3955 | { "$20", 20 + GP_REG_FIRST }, \ | |
3956 | { "$21", 21 + GP_REG_FIRST }, \ | |
3957 | { "$22", 22 + GP_REG_FIRST }, \ | |
3958 | { "$23", 23 + GP_REG_FIRST }, \ | |
3959 | { "$24", 24 + GP_REG_FIRST }, \ | |
3960 | { "$25", 25 + GP_REG_FIRST }, \ | |
3961 | { "$26", 26 + GP_REG_FIRST }, \ | |
3962 | { "$27", 27 + GP_REG_FIRST }, \ | |
3963 | { "$28", 28 + GP_REG_FIRST }, \ | |
3964 | { "$29", 29 + GP_REG_FIRST }, \ | |
3965 | { "$30", 30 + GP_REG_FIRST }, \ | |
3966 | { "$31", 31 + GP_REG_FIRST }, \ | |
3967 | { "$sp", 29 + GP_REG_FIRST }, \ | |
3968 | { "$fp", 30 + GP_REG_FIRST }, \ | |
3969 | { "at", 1 + GP_REG_FIRST }, \ | |
3970 | { "v0", 2 + GP_REG_FIRST }, \ | |
3971 | { "v1", 3 + GP_REG_FIRST }, \ | |
3972 | { "a0", 4 + GP_REG_FIRST }, \ | |
3973 | { "a1", 5 + GP_REG_FIRST }, \ | |
3974 | { "a2", 6 + GP_REG_FIRST }, \ | |
3975 | { "a3", 7 + GP_REG_FIRST }, \ | |
3976 | { "t0", 8 + GP_REG_FIRST }, \ | |
3977 | { "t1", 9 + GP_REG_FIRST }, \ | |
3978 | { "t2", 10 + GP_REG_FIRST }, \ | |
3979 | { "t3", 11 + GP_REG_FIRST }, \ | |
3980 | { "t4", 12 + GP_REG_FIRST }, \ | |
3981 | { "t5", 13 + GP_REG_FIRST }, \ | |
3982 | { "t6", 14 + GP_REG_FIRST }, \ | |
3983 | { "t7", 15 + GP_REG_FIRST }, \ | |
3984 | { "s0", 16 + GP_REG_FIRST }, \ | |
3985 | { "s1", 17 + GP_REG_FIRST }, \ | |
3986 | { "s2", 18 + GP_REG_FIRST }, \ | |
3987 | { "s3", 19 + GP_REG_FIRST }, \ | |
3988 | { "s4", 20 + GP_REG_FIRST }, \ | |
3989 | { "s5", 21 + GP_REG_FIRST }, \ | |
3990 | { "s6", 22 + GP_REG_FIRST }, \ | |
3991 | { "s7", 23 + GP_REG_FIRST }, \ | |
3992 | { "t8", 24 + GP_REG_FIRST }, \ | |
3993 | { "t9", 25 + GP_REG_FIRST }, \ | |
3994 | { "k0", 26 + GP_REG_FIRST }, \ | |
3995 | { "k1", 27 + GP_REG_FIRST }, \ | |
3996 | { "gp", 28 + GP_REG_FIRST }, \ | |
3997 | { "sp", 29 + GP_REG_FIRST }, \ | |
3998 | { "fp", 30 + GP_REG_FIRST }, \ | |
3999 | { "ra", 31 + GP_REG_FIRST }, \ | |
924706a0 | 4000 | { "$sp", 29 + GP_REG_FIRST }, \ |
b8eb88d0 | 4001 | { "$fp", 30 + GP_REG_FIRST } \ |
e75b25e7 MM |
4002 | } |
4003 | ||
e75b25e7 MM |
4004 | /* A C compound statement to output to stdio stream STREAM the |
4005 | assembler syntax for an instruction operand X. X is an RTL | |
4006 | expression. | |
4007 | ||
4008 | CODE is a value that can be used to specify one of several ways | |
4009 | of printing the operand. It is used when identical operands | |
4010 | must be printed differently depending on the context. CODE | |
4011 | comes from the `%' specification that was used to request | |
4012 | printing of the operand. If the specification was just `%DIGIT' | |
4013 | then CODE is 0; if the specification was `%LTR DIGIT' then CODE | |
4014 | is the ASCII code for LTR. | |
4015 | ||
4016 | If X is a register, this macro should print the register's name. | |
4017 | The names can be found in an array `reg_names' whose type is | |
4018 | `char *[]'. `reg_names' is initialized from `REGISTER_NAMES'. | |
4019 | ||
4020 | When the machine description has a specification `%PUNCT' (a `%' | |
4021 | followed by a punctuation character), this macro is called with | |
4022 | a null pointer for X and the punctuation character for CODE. | |
4023 | ||
4024 | See mips.c for the MIPS specific codes. */ | |
4025 | ||
4026 | #define PRINT_OPERAND(FILE, X, CODE) print_operand (FILE, X, CODE) | |
4027 | ||
4028 | /* A C expression which evaluates to true if CODE is a valid | |
4029 | punctuation character for use in the `PRINT_OPERAND' macro. If | |
4030 | `PRINT_OPERAND_PUNCT_VALID_P' is not defined, it means that no | |
4031 | punctuation characters (except for the standard one, `%') are | |
4032 | used in this way. */ | |
4033 | ||
4034 | #define PRINT_OPERAND_PUNCT_VALID_P(CODE) mips_print_operand_punct[CODE] | |
4035 | ||
4036 | /* A C compound statement to output to stdio stream STREAM the | |
4037 | assembler syntax for an instruction operand that is a memory | |
4038 | reference whose address is ADDR. ADDR is an RTL expression. | |
4039 | ||
4040 | On some machines, the syntax for a symbolic address depends on | |
4041 | the section that the address refers to. On these machines, | |
4042 | define the macro `ENCODE_SECTION_INFO' to store the information | |
4043 | into the `symbol_ref', and then check for it here. */ | |
4044 | ||
4045 | #define PRINT_OPERAND_ADDRESS(FILE, ADDR) print_operand_address (FILE, ADDR) | |
4046 | ||
4047 | ||
4048 | /* A C statement, to be executed after all slot-filler instructions | |
4049 | have been output. If necessary, call `dbr_sequence_length' to | |
4050 | determine the number of slots filled in a sequence (zero if not | |
4051 | currently outputting a sequence), to decide how many no-ops to | |
4052 | output, or whatever. | |
4053 | ||
4054 | Don't define this macro if it has nothing to do, but it is | |
4055 | helpful in reading assembly output if the extent of the delay | |
4056 | sequence is made explicit (e.g. with white space). | |
4057 | ||
4058 | Note that output routines for instructions with delay slots must | |
4059 | be prepared to deal with not being output as part of a sequence | |
4060 | (i.e. when the scheduling pass is not run, or when no slot | |
4061 | fillers could be found.) The variable `final_sequence' is null | |
4062 | when not processing a sequence, otherwise it contains the | |
4063 | `sequence' rtx being output. */ | |
4064 | ||
4065 | #define DBR_OUTPUT_SEQEND(STREAM) \ | |
4066 | do \ | |
4067 | { \ | |
4068 | if (set_nomacro > 0 && --set_nomacro == 0) \ | |
4069 | fputs ("\t.set\tmacro\n", STREAM); \ | |
4070 | \ | |
4071 | if (set_noreorder > 0 && --set_noreorder == 0) \ | |
4072 | fputs ("\t.set\treorder\n", STREAM); \ | |
4073 | \ | |
4074 | dslots_jump_filled++; \ | |
4075 | fputs ("\n", STREAM); \ | |
4076 | } \ | |
4077 | while (0) | |
4078 | ||
4079 | ||
4080 | /* How to tell the debugger about changes of source files. Note, the | |
4081 | mips ECOFF format cannot deal with changes of files inside of | |
4082 | functions, which means the output of parser generators like bison | |
4083 | is generally not debuggable without using the -l switch. Lose, | |
4084 | lose, lose. Silicon graphics seems to want all .file's hardwired | |
4085 | to 1. */ | |
4086 | ||
4087 | #ifndef SET_FILE_NUMBER | |
4088 | #define SET_FILE_NUMBER() ++num_source_filenames | |
4089 | #endif | |
4090 | ||
4091 | #define ASM_OUTPUT_SOURCE_FILENAME(STREAM, NAME) \ | |
4092 | mips_output_filename (STREAM, NAME) | |
4093 | ||
ddd5a7c1 | 4094 | /* This is defined so that it can be overridden in iris6.h. */ |
516a2dfd JW |
4095 | #define ASM_OUTPUT_FILENAME(STREAM, NUM_SOURCE_FILENAMES, NAME) \ |
4096 | do \ | |
4097 | { \ | |
4098 | fprintf (STREAM, "\t.file\t%d ", NUM_SOURCE_FILENAMES); \ | |
4099 | output_quoted_string (STREAM, NAME); \ | |
4100 | fputs ("\n", STREAM); \ | |
4101 | } \ | |
4102 | while (0) | |
4103 | ||
e75b25e7 MM |
4104 | /* This is how to output a note the debugger telling it the line number |
4105 | to which the following sequence of instructions corresponds. | |
4106 | Silicon graphics puts a label after each .loc. */ | |
4107 | ||
4108 | #ifndef LABEL_AFTER_LOC | |
4109 | #define LABEL_AFTER_LOC(STREAM) | |
4110 | #endif | |
4111 | ||
b2bcb32d | 4112 | #ifndef ASM_OUTPUT_SOURCE_LINE |
e75b25e7 MM |
4113 | #define ASM_OUTPUT_SOURCE_LINE(STREAM, LINE) \ |
4114 | mips_output_lineno (STREAM, LINE) | |
b2bcb32d | 4115 | #endif |
e75b25e7 | 4116 | |
9ec36da5 | 4117 | /* The MIPS implementation uses some labels for its own purpose. The |
e75b25e7 MM |
4118 | following lists what labels are created, and are all formed by the |
4119 | pattern $L[a-z].*. The machine independent portion of GCC creates | |
4120 | labels matching: $L[A-Z][0-9]+ and $L[0-9]+. | |
4121 | ||
c5b7917e | 4122 | LM[0-9]+ Silicon Graphics/ECOFF stabs label before each stmt. |
e75b25e7 MM |
4123 | $Lb[0-9]+ Begin blocks for MIPS debug support |
4124 | $Lc[0-9]+ Label for use in s<xx> operation. | |
4125 | $Le[0-9]+ End blocks for MIPS debug support | |
ab78d4a8 | 4126 | $Lp\..+ Half-pic labels. */ |
e75b25e7 MM |
4127 | |
4128 | /* This is how to output the definition of a user-level label named NAME, | |
4129 | such as the label on a static function or variable NAME. | |
4130 | ||
4131 | If we are optimizing the gp, remember that this label has been put | |
4132 | out, so we know not to emit an .extern for it in mips_asm_file_end. | |
4133 | We use one of the common bits in the IDENTIFIER tree node for this, | |
4134 | since those bits seem to be unused, and we don't have any method | |
4135 | of getting the decl nodes from the name. */ | |
4136 | ||
e75b25e7 MM |
4137 | #define ASM_OUTPUT_LABEL(STREAM,NAME) \ |
4138 | do { \ | |
4139 | assemble_name (STREAM, NAME); \ | |
4140 | fputs (":\n", STREAM); \ | |
e75b25e7 MM |
4141 | } while (0) |
4142 | ||
31c714e3 MM |
4143 | |
4144 | /* A C statement (sans semicolon) to output to the stdio stream | |
4145 | STREAM any text necessary for declaring the name NAME of an | |
4146 | initialized variable which is being defined. This macro must | |
7dac2f89 | 4147 | output the label definition (perhaps using `ASM_OUTPUT_LABEL'). |
31c714e3 MM |
4148 | The argument DECL is the `VAR_DECL' tree node representing the |
4149 | variable. | |
4150 | ||
4151 | If this macro is not defined, then the variable name is defined | |
4152 | in the usual manner as a label (by means of `ASM_OUTPUT_LABEL'). */ | |
4153 | ||
44404b8b | 4154 | #undef ASM_DECLARE_OBJECT_NAME |
31c714e3 | 4155 | #define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL) \ |
f3b39eba MM |
4156 | do \ |
4157 | { \ | |
4158 | mips_declare_object (STREAM, NAME, "", ":\n", 0); \ | |
4159 | HALF_PIC_DECLARE (NAME); \ | |
4160 | } \ | |
4161 | while (0) | |
31c714e3 | 4162 | |
e75b25e7 MM |
4163 | |
4164 | /* This is how to output a command to make the user-level label named NAME | |
4165 | defined for reference from other files. */ | |
4166 | ||
e75b25e7 MM |
4167 | #define ASM_GLOBALIZE_LABEL(STREAM,NAME) \ |
4168 | do { \ | |
4169 | fputs ("\t.globl\t", STREAM); \ | |
4170 | assemble_name (STREAM, NAME); \ | |
4171 | fputs ("\n", STREAM); \ | |
4172 | } while (0) | |
4173 | ||
31c714e3 | 4174 | /* This says how to define a global common symbol. */ |
e75b25e7 | 4175 | |
919509ce DN |
4176 | #define ASM_OUTPUT_ALIGNED_DECL_COMMON(STREAM, DECL, NAME, SIZE, ALIGN) \ |
4177 | do { \ | |
4178 | /* If the target wants uninitialized const declarations in \ | |
4179 | .rdata then don't put them in .comm */ \ | |
4180 | if (TARGET_EMBEDDED_DATA && TARGET_UNINIT_CONST_IN_RODATA \ | |
4181 | && TREE_CODE (DECL) == VAR_DECL && TREE_READONLY (DECL) \ | |
4182 | && (DECL_INITIAL (DECL) == 0 \ | |
4183 | || DECL_INITIAL (DECL) == error_mark_node)) \ | |
4184 | { \ | |
4185 | if (TREE_PUBLIC (DECL) && DECL_NAME (DECL)) \ | |
4186 | ASM_GLOBALIZE_LABEL (STREAM, NAME); \ | |
4187 | \ | |
4188 | READONLY_DATA_SECTION (); \ | |
4189 | ASM_OUTPUT_ALIGN (STREAM, floor_log2 (ALIGN / BITS_PER_UNIT)); \ | |
4190 | mips_declare_object (STREAM, NAME, "", ":\n\t.space\t%u\n", \ | |
4191 | (SIZE)); \ | |
4192 | } \ | |
4193 | else \ | |
4194 | mips_declare_object (STREAM, NAME, "\n\t.comm\t", ",%u\n", \ | |
4195 | (SIZE)); \ | |
4196 | } while (0) | |
4197 | ||
e75b25e7 | 4198 | |
c5b7917e | 4199 | /* This says how to define a local common symbol (ie, not visible to |
31c714e3 | 4200 | linker). */ |
e75b25e7 MM |
4201 | |
4202 | #define ASM_OUTPUT_LOCAL(STREAM, NAME, SIZE, ROUNDED) \ | |
69520b54 | 4203 | mips_declare_object (STREAM, NAME, "\n\t.lcomm\t", ",%u\n", (SIZE)) |
e75b25e7 MM |
4204 | |
4205 | ||
4206 | /* This says how to output an external. It would be possible not to | |
4207 | output anything and let undefined symbol become external. However | |
4208 | the assembler uses length information on externals to allocate in | |
4209 | data/sdata bss/sbss, thereby saving exec time. */ | |
4210 | ||
4211 | #define ASM_OUTPUT_EXTERNAL(STREAM,DECL,NAME) \ | |
4212 | mips_output_external(STREAM,DECL,NAME) | |
4213 | ||
4214 | /* This says what to print at the end of the assembly file */ | |
44404b8b | 4215 | #undef ASM_FILE_END |
e75b25e7 MM |
4216 | #define ASM_FILE_END(STREAM) mips_asm_file_end(STREAM) |
4217 | ||
4218 | ||
f99ffb60 RH |
4219 | /* Play switch file games if we're optimizing the global pointer. */ |
4220 | ||
4221 | #undef TEXT_SECTION | |
4222 | #define TEXT_SECTION() \ | |
4223 | do { \ | |
4224 | extern FILE *asm_out_text_file; \ | |
4225 | if (TARGET_FILE_SWITCHING) \ | |
4226 | asm_out_file = asm_out_text_file; \ | |
4227 | fputs (TEXT_SECTION_ASM_OP, asm_out_file); \ | |
4228 | fputc ('\n', asm_out_file); \ | |
4229 | } while (0) | |
4230 | ||
4231 | ||
e75b25e7 MM |
4232 | /* This is how to declare a function name. The actual work of |
4233 | emitting the label is moved to function_prologue, so that we can | |
4234 | get the line number correctly emitted before the .ent directive, | |
f99ffb60 | 4235 | and after any .file directives. */ |
e75b25e7 | 4236 | |
44404b8b | 4237 | #undef ASM_DECLARE_FUNCTION_NAME |
f99ffb60 RH |
4238 | #define ASM_DECLARE_FUNCTION_NAME(STREAM,NAME,DECL) \ |
4239 | HALF_PIC_DECLARE (NAME) | |
e75b25e7 | 4240 | |
e75b25e7 MM |
4241 | /* This is how to output an internal numbered label where |
4242 | PREFIX is the class of label and NUM is the number within the class. */ | |
4243 | ||
44404b8b | 4244 | #undef ASM_OUTPUT_INTERNAL_LABEL |
e75b25e7 | 4245 | #define ASM_OUTPUT_INTERNAL_LABEL(STREAM,PREFIX,NUM) \ |
6ae1498b | 4246 | fprintf (STREAM, "%s%s%d:\n", LOCAL_LABEL_PREFIX, PREFIX, NUM) |
e75b25e7 MM |
4247 | |
4248 | /* This is how to store into the string LABEL | |
4249 | the symbol_ref name of an internal numbered label where | |
4250 | PREFIX is the class of label and NUM is the number within the class. | |
4251 | This is suitable for output with `assemble_name'. */ | |
4252 | ||
44404b8b | 4253 | #undef ASM_GENERATE_INTERNAL_LABEL |
e75b25e7 | 4254 | #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \ |
4f70758f | 4255 | sprintf ((LABEL), "*%s%s%ld", (LOCAL_LABEL_PREFIX), (PREFIX), (long)(NUM)) |
e75b25e7 MM |
4256 | |
4257 | /* This is how to output an assembler line defining a `double' constant. */ | |
4258 | ||
4259 | #define ASM_OUTPUT_DOUBLE(STREAM,VALUE) \ | |
dbe9742d MM |
4260 | mips_output_double (STREAM, VALUE) |
4261 | ||
e75b25e7 MM |
4262 | |
4263 | /* This is how to output an assembler line defining a `float' constant. */ | |
4264 | ||
4265 | #define ASM_OUTPUT_FLOAT(STREAM,VALUE) \ | |
dbe9742d MM |
4266 | mips_output_float (STREAM, VALUE) |
4267 | ||
e75b25e7 MM |
4268 | |
4269 | /* This is how to output an assembler line defining an `int' constant. */ | |
4270 | ||
e75b25e7 MM |
4271 | #define ASM_OUTPUT_INT(STREAM,VALUE) \ |
4272 | do { \ | |
4273 | fprintf (STREAM, "\t.word\t"); \ | |
4274 | output_addr_const (STREAM, (VALUE)); \ | |
4275 | fprintf (STREAM, "\n"); \ | |
4276 | } while (0) | |
4277 | ||
7dac2f89 | 4278 | /* Likewise for 64 bit, `char' and `short' constants. |
d89ccde6 GRK |
4279 | |
4280 | FIXME: operand_subword can't handle some complex constant expressions | |
4281 | that output_addr_const can (for example it does not call | |
7dac2f89 | 4282 | simplify_subtraction). Since GAS can handle dword, even for mipsII, |
d89ccde6 GRK |
4283 | rely on that to avoid operand_subword for most of the cases where this |
4284 | matters. Try gcc.c-torture/compile/930326-1.c with -mips2 -mlong64, | |
4285 | or the same case with the type of 'i' changed to long long. | |
4286 | ||
4287 | */ | |
876c09d3 JW |
4288 | |
4289 | #define ASM_OUTPUT_DOUBLE_INT(STREAM,VALUE) \ | |
4290 | do { \ | |
d89ccde6 | 4291 | if (TARGET_64BIT || TARGET_GAS) \ |
876c09d3 JW |
4292 | { \ |
4293 | fprintf (STREAM, "\t.dword\t"); \ | |
a88d48a4 JW |
4294 | if (HOST_BITS_PER_WIDE_INT < 64 || GET_CODE (VALUE) != CONST_INT) \ |
4295 | /* We can't use 'X' for negative numbers, because then we won't \ | |
4296 | get the right value for the upper 32 bits. */ \ | |
4297 | output_addr_const (STREAM, VALUE); \ | |
4298 | else \ | |
4299 | /* We must use 'X', because otherwise LONG_MIN will print as \ | |
4300 | a number that the Irix 6 assembler won't accept. */ \ | |
4301 | print_operand (STREAM, VALUE, 'X'); \ | |
876c09d3 JW |
4302 | fprintf (STREAM, "\n"); \ |
4303 | } \ | |
4304 | else \ | |
4305 | { \ | |
4306 | assemble_integer (operand_subword ((VALUE), 0, 0, DImode), \ | |
c8af3574 | 4307 | UNITS_PER_WORD, BITS_PER_WORD, 1); \ |
876c09d3 | 4308 | assemble_integer (operand_subword ((VALUE), 1, 0, DImode), \ |
c8af3574 | 4309 | UNITS_PER_WORD, BITS_PER_WORD, 1); \ |
876c09d3 JW |
4310 | } \ |
4311 | } while (0) | |
e75b25e7 MM |
4312 | |
4313 | #define ASM_OUTPUT_SHORT(STREAM,VALUE) \ | |
4314 | { \ | |
4315 | fprintf (STREAM, "\t.half\t"); \ | |
4316 | output_addr_const (STREAM, (VALUE)); \ | |
4317 | fprintf (STREAM, "\n"); \ | |
4318 | } | |
4319 | ||
4320 | #define ASM_OUTPUT_CHAR(STREAM,VALUE) \ | |
4321 | { \ | |
4322 | fprintf (STREAM, "\t.byte\t"); \ | |
4323 | output_addr_const (STREAM, (VALUE)); \ | |
4324 | fprintf (STREAM, "\n"); \ | |
4325 | } | |
4326 | ||
e75b25e7 MM |
4327 | /* This is how to output an assembler line for a numeric constant byte. */ |
4328 | ||
4329 | #define ASM_OUTPUT_BYTE(STREAM,VALUE) \ | |
4330 | fprintf (STREAM, "\t.byte\t0x%x\n", (VALUE)) | |
4331 | ||
4332 | /* This is how to output an element of a case-vector that is absolute. */ | |
4333 | ||
4334 | #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \ | |
6ae1498b | 4335 | fprintf (STREAM, "\t%s\t%sL%d\n", \ |
1eeed24e | 4336 | Pmode == DImode ? ".dword" : ".word", \ |
6ae1498b | 4337 | LOCAL_LABEL_PREFIX, \ |
876c09d3 | 4338 | VALUE) |
e75b25e7 MM |
4339 | |
4340 | /* This is how to output an element of a case-vector that is relative. | |
e0bfcea5 ILT |
4341 | This is used for pc-relative code (e.g. when TARGET_ABICALLS or |
4342 | TARGET_EMBEDDED_PIC). */ | |
e75b25e7 | 4343 | |
33f7f353 | 4344 | #define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL) \ |
e0bfcea5 | 4345 | do { \ |
2bcb2ab3 GK |
4346 | if (TARGET_MIPS16) \ |
4347 | fprintf (STREAM, "\t.half\t%sL%d-%sL%d\n", \ | |
4348 | LOCAL_LABEL_PREFIX, VALUE, LOCAL_LABEL_PREFIX, REL); \ | |
4349 | else if (TARGET_EMBEDDED_PIC) \ | |
6ae1498b | 4350 | fprintf (STREAM, "\t%s\t%sL%d-%sLS%d\n", \ |
1eeed24e | 4351 | Pmode == DImode ? ".dword" : ".word", \ |
6ae1498b | 4352 | LOCAL_LABEL_PREFIX, VALUE, LOCAL_LABEL_PREFIX, REL); \ |
a53f72db | 4353 | else if (mips_abi == ABI_32 || mips_abi == ABI_O64) \ |
6ae1498b | 4354 | fprintf (STREAM, "\t%s\t%sL%d\n", \ |
1eeed24e | 4355 | Pmode == DImode ? ".gpdword" : ".gpword", \ |
6ae1498b | 4356 | LOCAL_LABEL_PREFIX, VALUE); \ |
516a2dfd | 4357 | else \ |
b2d8cf33 | 4358 | fprintf (STREAM, "\t%s\t%sL%d\n", \ |
1eeed24e | 4359 | Pmode == DImode ? ".dword" : ".word", \ |
b2d8cf33 | 4360 | LOCAL_LABEL_PREFIX, VALUE); \ |
e0bfcea5 ILT |
4361 | } while (0) |
4362 | ||
2bcb2ab3 GK |
4363 | /* When generating embedded PIC or mips16 code we want to put the jump |
4364 | table in the .text section. In all other cases, we want to put the | |
4365 | jump table in the .rdata section. Unfortunately, we can't use | |
e0bfcea5 ILT |
4366 | JUMP_TABLES_IN_TEXT_SECTION, because it is not conditional. |
4367 | Instead, we use ASM_OUTPUT_CASE_LABEL to switch back to the .text | |
4368 | section if appropriate. */ | |
44404b8b | 4369 | #undef ASM_OUTPUT_CASE_LABEL |
e0bfcea5 ILT |
4370 | #define ASM_OUTPUT_CASE_LABEL(FILE, PREFIX, NUM, INSN) \ |
4371 | do { \ | |
2bcb2ab3 GK |
4372 | if (TARGET_EMBEDDED_PIC || TARGET_MIPS16) \ |
4373 | function_section (current_function_decl); \ | |
e0bfcea5 ILT |
4374 | ASM_OUTPUT_INTERNAL_LABEL (FILE, PREFIX, NUM); \ |
4375 | } while (0) | |
e75b25e7 MM |
4376 | |
4377 | /* This is how to output an assembler line | |
4378 | that says to advance the location counter | |
4379 | to a multiple of 2**LOG bytes. */ | |
4380 | ||
4381 | #define ASM_OUTPUT_ALIGN(STREAM,LOG) \ | |
a688e0b7 | 4382 | fprintf (STREAM, "\t.align\t%d\n", (LOG)) |
e75b25e7 | 4383 | |
38e01259 | 4384 | /* This is how to output an assembler line to advance the location |
e75b25e7 MM |
4385 | counter by SIZE bytes. */ |
4386 | ||
44404b8b | 4387 | #undef ASM_OUTPUT_SKIP |
e75b25e7 MM |
4388 | #define ASM_OUTPUT_SKIP(STREAM,SIZE) \ |
4389 | fprintf (STREAM, "\t.space\t%u\n", (SIZE)) | |
4390 | ||
e75b25e7 | 4391 | /* This is how to output a string. */ |
44404b8b | 4392 | #undef ASM_OUTPUT_ASCII |
e75b25e7 | 4393 | #define ASM_OUTPUT_ASCII(STREAM, STRING, LEN) \ |
b3276c7a | 4394 | mips_output_ascii (STREAM, STRING, LEN) |
e75b25e7 MM |
4395 | |
4396 | /* Handle certain cpp directives used in header files on sysV. */ | |
4397 | #define SCCS_DIRECTIVE | |
4398 | ||
b2bcb32d | 4399 | #ifndef ASM_OUTPUT_IDENT |
e75b25e7 MM |
4400 | /* Output #ident as a in the read-only data section. */ |
4401 | #define ASM_OUTPUT_IDENT(FILE, STRING) \ | |
4402 | { \ | |
3cce094d | 4403 | const char *p = STRING; \ |
e75b25e7 MM |
4404 | int size = strlen (p) + 1; \ |
4405 | rdata_section (); \ | |
4406 | assemble_string (p, size); \ | |
4407 | } | |
b2bcb32d | 4408 | #endif |
e75b25e7 | 4409 | \f |
b82b0773 MM |
4410 | /* Default to -G 8 */ |
4411 | #ifndef MIPS_DEFAULT_GVALUE | |
4412 | #define MIPS_DEFAULT_GVALUE 8 | |
4413 | #endif | |
e75b25e7 | 4414 | |
f3b39eba MM |
4415 | /* Define the strings to put out for each section in the object file. */ |
4416 | #define TEXT_SECTION_ASM_OP "\t.text" /* instructions */ | |
4417 | #define DATA_SECTION_ASM_OP "\t.data" /* large data */ | |
4418 | #define SDATA_SECTION_ASM_OP "\t.sdata" /* small data */ | |
4419 | #define RDATA_SECTION_ASM_OP "\t.rdata" /* read-only data */ | |
44404b8b | 4420 | #undef READONLY_DATA_SECTION |
f3b39eba | 4421 | #define READONLY_DATA_SECTION rdata_section |
3cf6400d | 4422 | #define SMALL_DATA_SECTION sdata_section |
e75b25e7 MM |
4423 | |
4424 | /* What other sections we support other than the normal .data/.text. */ | |
4425 | ||
44404b8b | 4426 | #undef EXTRA_SECTIONS |
876c09d3 | 4427 | #define EXTRA_SECTIONS in_sdata, in_rdata |
e75b25e7 MM |
4428 | |
4429 | /* Define the additional functions to select our additional sections. */ | |
4430 | ||
4431 | /* on the MIPS it is not a good idea to put constants in the text | |
4432 | section, since this defeats the sdata/data mechanism. This is | |
4433 | especially true when -O is used. In this case an effort is made to | |
4434 | address with faster (gp) register relative addressing, which can | |
4435 | only get at sdata and sbss items (there is no stext !!) However, | |
4436 | if the constant is too large for sdata, and it's readonly, it | |
4437 | will go into the .rdata section. */ | |
4438 | ||
44404b8b | 4439 | #undef EXTRA_SECTION_FUNCTIONS |
e75b25e7 MM |
4440 | #define EXTRA_SECTION_FUNCTIONS \ |
4441 | void \ | |
4442 | sdata_section () \ | |
4443 | { \ | |
4444 | if (in_section != in_sdata) \ | |
4445 | { \ | |
4446 | fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP); \ | |
4447 | in_section = in_sdata; \ | |
4448 | } \ | |
4449 | } \ | |
4450 | \ | |
4451 | void \ | |
4452 | rdata_section () \ | |
4453 | { \ | |
4454 | if (in_section != in_rdata) \ | |
4455 | { \ | |
4456 | fprintf (asm_out_file, "%s\n", RDATA_SECTION_ASM_OP); \ | |
4457 | in_section = in_rdata; \ | |
4458 | } \ | |
4459 | } | |
4460 | ||
4461 | /* Given a decl node or constant node, choose the section to output it in | |
4462 | and select that section. */ | |
4463 | ||
44404b8b | 4464 | #undef SELECT_RTX_SECTION |
365c6a0b | 4465 | #define SELECT_RTX_SECTION(MODE,RTX) mips_select_rtx_section (MODE, RTX) |
e75b25e7 | 4466 | |
44404b8b | 4467 | #undef SELECT_SECTION |
365c6a0b | 4468 | #define SELECT_SECTION(DECL, RELOC) mips_select_section (DECL, RELOC) |
e75b25e7 MM |
4469 | |
4470 | \f | |
4471 | /* Store in OUTPUT a string (made with alloca) containing | |
4472 | an assembler-name for a local static variable named NAME. | |
4473 | LABELNO is an integer which is different for each call. */ | |
4474 | ||
4475 | #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \ | |
4476 | ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10), \ | |
4477 | sprintf ((OUTPUT), "%s.%d", (NAME), (LABELNO))) | |
4478 | ||
4479 | #define ASM_OUTPUT_REG_PUSH(STREAM,REGNO) \ | |
4480 | do \ | |
4481 | { \ | |
876c09d3 JW |
4482 | fprintf (STREAM, "\t%s\t%s,%s,8\n\t%s\t%s,0(%s)\n", \ |
4483 | TARGET_64BIT ? "dsubu" : "subu", \ | |
e75b25e7 MM |
4484 | reg_names[STACK_POINTER_REGNUM], \ |
4485 | reg_names[STACK_POINTER_REGNUM], \ | |
876c09d3 | 4486 | TARGET_64BIT ? "sd" : "sw", \ |
e75b25e7 MM |
4487 | reg_names[REGNO], \ |
4488 | reg_names[STACK_POINTER_REGNUM]); \ | |
4489 | } \ | |
4490 | while (0) | |
4491 | ||
4492 | #define ASM_OUTPUT_REG_POP(STREAM,REGNO) \ | |
4493 | do \ | |
4494 | { \ | |
4495 | if (! set_noreorder) \ | |
4496 | fprintf (STREAM, "\t.set\tnoreorder\n"); \ | |
4497 | \ | |
4498 | dslots_load_total++; \ | |
4499 | dslots_load_filled++; \ | |
876c09d3 JW |
4500 | fprintf (STREAM, "\t%s\t%s,0(%s)\n\t%s\t%s,%s,8\n", \ |
4501 | TARGET_64BIT ? "ld" : "lw", \ | |
e75b25e7 MM |
4502 | reg_names[REGNO], \ |
4503 | reg_names[STACK_POINTER_REGNUM], \ | |
876c09d3 | 4504 | TARGET_64BIT ? "daddu" : "addu", \ |
e75b25e7 MM |
4505 | reg_names[STACK_POINTER_REGNUM], \ |
4506 | reg_names[STACK_POINTER_REGNUM]); \ | |
4507 | \ | |
4508 | if (! set_noreorder) \ | |
4509 | fprintf (STREAM, "\t.set\treorder\n"); \ | |
4510 | } \ | |
4511 | while (0) | |
4512 | ||
4baed42f DE |
4513 | /* How to start an assembler comment. |
4514 | The leading space is important (the mips native assembler requires it). */ | |
e75b25e7 | 4515 | #ifndef ASM_COMMENT_START |
4baed42f | 4516 | #define ASM_COMMENT_START " #" |
e75b25e7 | 4517 | #endif |
e75b25e7 MM |
4518 | \f |
4519 | ||
4520 | /* Macros for mips-tfile.c to encapsulate stabs in ECOFF, and for | |
4521 | and mips-tdump.c to print them out. | |
4522 | ||
4523 | These must match the corresponding definitions in gdb/mipsread.c. | |
4524 | Unfortunately, gcc and gdb do not currently share any directories. */ | |
4525 | ||
4526 | #define CODE_MASK 0x8F300 | |
4527 | #define MIPS_IS_STAB(sym) (((sym)->index & 0xFFF00) == CODE_MASK) | |
4528 | #define MIPS_MARK_STAB(code) ((code)+CODE_MASK) | |
4529 | #define MIPS_UNMARK_STAB(code) ((code)-CODE_MASK) | |
3f1f8d8c MM |
4530 | |
4531 | \f | |
4532 | /* Default definitions for size_t and ptrdiff_t. */ | |
4533 | ||
4534 | #ifndef SIZE_TYPE | |
876c09d3 | 4535 | #define NO_BUILTIN_SIZE_TYPE |
79e69af0 | 4536 | #define SIZE_TYPE (Pmode == DImode ? "long unsigned int" : "unsigned int") |
3f1f8d8c MM |
4537 | #endif |
4538 | ||
4539 | #ifndef PTRDIFF_TYPE | |
876c09d3 | 4540 | #define NO_BUILTIN_PTRDIFF_TYPE |
79e69af0 | 4541 | #define PTRDIFF_TYPE (Pmode == DImode ? "long int" : "int") |
3f1f8d8c | 4542 | #endif |
28174a14 MS |
4543 | |
4544 | /* See mips_expand_prologue's use of loadgp for when this should be | |
4545 | true. */ | |
4546 | ||
a53f72db GRK |
4547 | #define DONT_ACCESS_GBLS_AFTER_EPILOGUE (TARGET_ABICALLS \ |
4548 | && mips_abi != ABI_32 \ | |
4549 | && mips_abi != ABI_O64) | |
2bcb2ab3 GK |
4550 | \f |
4551 | /* In mips16 mode, we need to look through the function to check for | |
4552 | PC relative loads that are out of range. */ | |
4553 | #define MACHINE_DEPENDENT_REORG(X) machine_dependent_reorg (X) | |
4554 | ||
4555 | /* We need to use a special set of functions to handle hard floating | |
4556 | point code in mips16 mode. */ | |
337e2b69 ILT |
4557 | |
4558 | #ifndef INIT_SUBTARGET_OPTABS | |
4559 | #define INIT_SUBTARGET_OPTABS | |
4560 | #endif | |
4561 | ||
4562 | #define INIT_TARGET_OPTABS \ | |
4563 | do \ | |
4564 | { \ | |
2bcb2ab3 GK |
4565 | if (! TARGET_MIPS16 || ! mips16_hard_float) \ |
4566 | INIT_SUBTARGET_OPTABS; \ | |
4567 | else \ | |
4568 | { \ | |
4569 | add_optab->handlers[(int) SFmode].libfunc = \ | |
e85cde9a | 4570 | init_one_libfunc ("__mips16_addsf3"); \ |
2bcb2ab3 | 4571 | sub_optab->handlers[(int) SFmode].libfunc = \ |
e85cde9a | 4572 | init_one_libfunc ("__mips16_subsf3"); \ |
2bcb2ab3 | 4573 | smul_optab->handlers[(int) SFmode].libfunc = \ |
e85cde9a | 4574 | init_one_libfunc ("__mips16_mulsf3"); \ |
ef89d648 | 4575 | sdiv_optab->handlers[(int) SFmode].libfunc = \ |
e85cde9a | 4576 | init_one_libfunc ("__mips16_divsf3"); \ |
2bcb2ab3 | 4577 | \ |
e85cde9a JL |
4578 | eqsf2_libfunc = init_one_libfunc ("__mips16_eqsf2"); \ |
4579 | nesf2_libfunc = init_one_libfunc ("__mips16_nesf2"); \ | |
4580 | gtsf2_libfunc = init_one_libfunc ("__mips16_gtsf2"); \ | |
4581 | gesf2_libfunc = init_one_libfunc ("__mips16_gesf2"); \ | |
4582 | ltsf2_libfunc = init_one_libfunc ("__mips16_ltsf2"); \ | |
4583 | lesf2_libfunc = init_one_libfunc ("__mips16_lesf2"); \ | |
2bcb2ab3 GK |
4584 | \ |
4585 | floatsisf_libfunc = \ | |
e85cde9a | 4586 | init_one_libfunc ("__mips16_floatsisf"); \ |
2bcb2ab3 | 4587 | fixsfsi_libfunc = \ |
e85cde9a | 4588 | init_one_libfunc ("__mips16_fixsfsi"); \ |
2bcb2ab3 GK |
4589 | \ |
4590 | if (TARGET_DOUBLE_FLOAT) \ | |
4591 | { \ | |
4592 | add_optab->handlers[(int) DFmode].libfunc = \ | |
e85cde9a | 4593 | init_one_libfunc ("__mips16_adddf3"); \ |
2bcb2ab3 | 4594 | sub_optab->handlers[(int) DFmode].libfunc = \ |
e85cde9a | 4595 | init_one_libfunc ("__mips16_subdf3"); \ |
2bcb2ab3 | 4596 | smul_optab->handlers[(int) DFmode].libfunc = \ |
e85cde9a | 4597 | init_one_libfunc ("__mips16_muldf3"); \ |
ef89d648 | 4598 | sdiv_optab->handlers[(int) DFmode].libfunc = \ |
e85cde9a | 4599 | init_one_libfunc ("__mips16_divdf3"); \ |
2bcb2ab3 GK |
4600 | \ |
4601 | extendsfdf2_libfunc = \ | |
e85cde9a | 4602 | init_one_libfunc ("__mips16_extendsfdf2"); \ |
2bcb2ab3 | 4603 | truncdfsf2_libfunc = \ |
e85cde9a | 4604 | init_one_libfunc ("__mips16_truncdfsf2"); \ |
2bcb2ab3 GK |
4605 | \ |
4606 | eqdf2_libfunc = \ | |
e85cde9a | 4607 | init_one_libfunc ("__mips16_eqdf2"); \ |
2bcb2ab3 | 4608 | nedf2_libfunc = \ |
e85cde9a | 4609 | init_one_libfunc ("__mips16_nedf2"); \ |
2bcb2ab3 | 4610 | gtdf2_libfunc = \ |
e85cde9a | 4611 | init_one_libfunc ("__mips16_gtdf2"); \ |
2bcb2ab3 | 4612 | gedf2_libfunc = \ |
e85cde9a | 4613 | init_one_libfunc ("__mips16_gedf2"); \ |
2bcb2ab3 | 4614 | ltdf2_libfunc = \ |
e85cde9a | 4615 | init_one_libfunc ("__mips16_ltdf2"); \ |
2bcb2ab3 | 4616 | ledf2_libfunc = \ |
e85cde9a | 4617 | init_one_libfunc ("__mips16_ledf2"); \ |
2bcb2ab3 GK |
4618 | \ |
4619 | floatsidf_libfunc = \ | |
e85cde9a | 4620 | init_one_libfunc ("__mips16_floatsidf"); \ |
2bcb2ab3 | 4621 | fixdfsi_libfunc = \ |
e85cde9a | 4622 | init_one_libfunc ("__mips16_fixdfsi"); \ |
2bcb2ab3 GK |
4623 | } \ |
4624 | } \ | |
337e2b69 ILT |
4625 | } \ |
4626 | while (0) |