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* config/sh/lib1funcs-Os-4-200.asm: Guard entire file with
[official-gcc.git] / gcc / config / sh / sh.h
blob5ce7086d0b419210fe3a11594d1b4579700a54b5
1 /* Definitions of target machine for GNU compiler for Renesas / SuperH SH.
2 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
3 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
4 Contributed by Steve Chamberlain (sac@cygnus.com).
5 Improved by Jim Wilson (wilson@cygnus.com).
6
7 This file is part of GCC.
8
9 GCC is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2, or (at your option)
12 any later version.
13
14 GCC is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with GCC; see the file COPYING. If not, write to
21 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
22 Boston, MA 02110-1301, USA. */
23
24 #ifndef GCC_SH_H
25 #define GCC_SH_H
26
27 #define TARGET_VERSION \
28 fputs (" (Hitachi SH)", stderr);
29
30 /* Unfortunately, insn-attrtab.c doesn't include insn-codes.h. We can't
31 include it here, because bconfig.h is also included by gencodes.c . */
32 /* ??? No longer true. */
33 extern int code_for_indirect_jump_scratch;
34
35 #define TARGET_CPU_CPP_BUILTINS() \
36 do { \
37 builtin_define ("__sh__"); \
38 builtin_assert ("cpu=sh"); \
39 builtin_assert ("machine=sh"); \
40 switch ((int) sh_cpu) \
41 { \
42 case PROCESSOR_SH1: \
43 builtin_define ("__sh1__"); \
44 break; \
45 case PROCESSOR_SH2: \
46 builtin_define ("__sh2__"); \
47 break; \
48 case PROCESSOR_SH2E: \
49 builtin_define ("__SH2E__"); \
50 break; \
51 case PROCESSOR_SH2A: \
52 builtin_define ("__SH2A__"); \
53 builtin_define (TARGET_SH2A_DOUBLE \
54 ? (TARGET_FPU_SINGLE ? "__SH2A_SINGLE__" : "__SH2A_DOUBLE__") \
55 : TARGET_FPU_ANY ? "__SH2A_SINGLE_ONLY__" \
56 : "__SH2A_NOFPU__"); \
57 break; \
58 case PROCESSOR_SH3: \
59 builtin_define ("__sh3__"); \
60 builtin_define ("__SH3__"); \
61 if (TARGET_HARD_SH4) \
62 builtin_define ("__SH4_NOFPU__"); \
63 break; \
64 case PROCESSOR_SH3E: \
65 builtin_define (TARGET_HARD_SH4 ? "__SH4_SINGLE_ONLY__" : "__SH3E__"); \
66 break; \
67 case PROCESSOR_SH4: \
68 builtin_define (TARGET_FPU_SINGLE ? "__SH4_SINGLE__" : "__SH4__"); \
69 break; \
70 case PROCESSOR_SH4A: \
71 builtin_define ("__SH4A__"); \
72 builtin_define (TARGET_SH4 \
73 ? (TARGET_FPU_SINGLE ? "__SH4_SINGLE__" : "__SH4__") \
74 : TARGET_FPU_ANY ? "__SH4_SINGLE_ONLY__" \
75 : "__SH4_NOFPU__"); \
76 break; \
77 case PROCESSOR_SH5: \
78 { \
79 builtin_define_with_value ("__SH5__", \
80 TARGET_SHMEDIA64 ? "64" : "32", 0); \
81 builtin_define_with_value ("__SHMEDIA__", \
82 TARGET_SHMEDIA ? "1" : "0", 0); \
83 if (! TARGET_FPU_DOUBLE) \
84 builtin_define ("__SH4_NOFPU__"); \
85 } \
86 } \
87 if (TARGET_FPU_ANY) \
88 builtin_define ("__SH_FPU_ANY__"); \
89 if (TARGET_FPU_DOUBLE) \
90 builtin_define ("__SH_FPU_DOUBLE__"); \
91 if (TARGET_HITACHI) \
92 builtin_define ("__HITACHI__"); \
93 builtin_define (TARGET_LITTLE_ENDIAN \
94 ? "__LITTLE_ENDIAN__" : "__BIG_ENDIAN__"); \
95 } while (0)
96
97 /* We can not debug without a frame pointer. */
98 /* #define CAN_DEBUG_WITHOUT_FP */
99
100 #define CONDITIONAL_REGISTER_USAGE do \
101 { \
102 int regno; \
103 for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno ++) \
104 if (! VALID_REGISTER_P (regno)) \
105 fixed_regs[regno] = call_used_regs[regno] = 1; \
106 /* R8 and R9 are call-clobbered on SH5, but not on earlier SH ABIs. */ \
107 if (TARGET_SH5) \
108 { \
109 call_used_regs[FIRST_GENERAL_REG + 8] \
110 = call_used_regs[FIRST_GENERAL_REG + 9] = 1; \
111 call_really_used_regs[FIRST_GENERAL_REG + 8] \
112 = call_really_used_regs[FIRST_GENERAL_REG + 9] = 1; \
113 } \
114 if (TARGET_SHMEDIA) \
115 { \
116 regno_reg_class[FIRST_GENERAL_REG] = GENERAL_REGS; \
117 CLEAR_HARD_REG_SET (reg_class_contents[FP0_REGS]); \
118 regno_reg_class[FIRST_FP_REG] = FP_REGS; \
119 } \
120 if (flag_pic) \
121 { \
122 fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
123 call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
124 } \
125 /* Renesas saves and restores mac registers on call. */ \
126 if (TARGET_HITACHI && ! TARGET_NOMACSAVE) \
127 { \
128 call_really_used_regs[MACH_REG] = 0; \
129 call_really_used_regs[MACL_REG] = 0; \
130 } \
131 for (regno = FIRST_FP_REG + (TARGET_LITTLE_ENDIAN != 0); \
132 regno <= LAST_FP_REG; regno += 2) \
133 SET_HARD_REG_BIT (reg_class_contents[DF_HI_REGS], regno); \
134 if (TARGET_SHMEDIA) \
135 { \
136 for (regno = FIRST_TARGET_REG; regno <= LAST_TARGET_REG; regno ++)\
137 if (! fixed_regs[regno] && call_really_used_regs[regno]) \
138 SET_HARD_REG_BIT (reg_class_contents[SIBCALL_REGS], regno); \
139 } \
140 else \
141 for (regno = FIRST_GENERAL_REG; regno <= LAST_GENERAL_REG; regno++) \
142 if (! fixed_regs[regno] && call_really_used_regs[regno]) \
143 SET_HARD_REG_BIT (reg_class_contents[SIBCALL_REGS], regno); \
144 } while (0)
145 \f
146 /* Nonzero if this is an ELF target - compile time only */
147 #define TARGET_ELF 0
148
149 /* Nonzero if we should generate code using type 2E insns. */
150 #define TARGET_SH2E (TARGET_SH2 && TARGET_SH_E)
151
152 /* Nonzero if we should generate code using type 2A insns. */
153 #define TARGET_SH2A TARGET_HARD_SH2A
154 /* Nonzero if we should generate code using type 2A SF insns. */
155 #define TARGET_SH2A_SINGLE (TARGET_SH2A && TARGET_SH2E)
156 /* Nonzero if we should generate code using type 2A DF insns. */
157 #define TARGET_SH2A_DOUBLE (TARGET_HARD_SH2A_DOUBLE && TARGET_SH2A)
158
159 /* Nonzero if we should generate code using type 3E insns. */
160 #define TARGET_SH3E (TARGET_SH3 && TARGET_SH_E)
161
162 /* Nonzero if the cache line size is 32. */
163 #define TARGET_CACHE32 (TARGET_HARD_SH4 || TARGET_SH5)
164
165 /* Nonzero if we schedule for a superscalar implementation. */
166 #define TARGET_SUPERSCALAR TARGET_HARD_SH4
167
168 /* Nonzero if the target has separate instruction and data caches. */
169 #define TARGET_HARVARD (TARGET_HARD_SH4 || TARGET_SH5)
170
171 /* Nonzero if a double-precision FPU is available. */
172 #define TARGET_FPU_DOUBLE \
173 ((target_flags & MASK_SH4) != 0 || TARGET_SH2A_DOUBLE)
174
175 /* Nonzero if an FPU is available. */
176 #define TARGET_FPU_ANY (TARGET_SH2E || TARGET_FPU_DOUBLE)
177
178 /* Nonzero if we should generate code using type 4 insns. */
179 #undef TARGET_SH4
180 #define TARGET_SH4 ((target_flags & MASK_SH4) != 0 && TARGET_SH1)
181
182 /* Nonzero if we're generating code for the common subset of
183 instructions present on both SH4a and SH4al-dsp. */
184 #define TARGET_SH4A_ARCH TARGET_SH4A
185
186 /* Nonzero if we're generating code for SH4a, unless the use of the
187 FPU is disabled (which makes it compatible with SH4al-dsp). */
188 #define TARGET_SH4A_FP (TARGET_SH4A_ARCH && TARGET_FPU_ANY)
189
190 /* Nonzero if we should generate code using the SHcompact instruction
191 set and 32-bit ABI. */
192 #define TARGET_SHCOMPACT (TARGET_SH5 && TARGET_SH1)
193
194 /* Nonzero if we should generate code using the SHmedia instruction
195 set and ABI. */
196 #define TARGET_SHMEDIA (TARGET_SH5 && ! TARGET_SH1)
197
198 /* Nonzero if we should generate code using the SHmedia ISA and 32-bit
199 ABI. */
200 #define TARGET_SHMEDIA32 (TARGET_SH5 && ! TARGET_SH1 && TARGET_SH_E)
201
202 /* Nonzero if we should generate code using the SHmedia ISA and 64-bit
203 ABI. */
204 #define TARGET_SHMEDIA64 (TARGET_SH5 && ! TARGET_SH1 && ! TARGET_SH_E)
205
206 /* Nonzero if we should generate code using SHmedia FPU instructions. */
207 #define TARGET_SHMEDIA_FPU (TARGET_SHMEDIA && TARGET_FPU_DOUBLE)
208
209 /* This is not used by the SH2E calling convention */
210 #define TARGET_VARARGS_PRETEND_ARGS(FUN_DECL) \
211 (TARGET_SH1 && ! TARGET_SH2E && ! TARGET_SH5 \
212 && ! (TARGET_HITACHI || sh_attr_renesas_p (FUN_DECL)))
213
214 #ifndef TARGET_CPU_DEFAULT
215 #define TARGET_CPU_DEFAULT SELECT_SH1
216 #define SUPPORT_SH1 1
217 #define SUPPORT_SH2E 1
218 #define SUPPORT_SH4 1
219 #define SUPPORT_SH4_SINGLE 1
220 #define SUPPORT_SH2A 1
221 #define SUPPORT_SH2A_SINGLE 1
222 #endif
223
224 #define TARGET_DIVIDE_INV \
225 (sh_div_strategy == SH_DIV_INV || sh_div_strategy == SH_DIV_INV_MINLAT \
226 || sh_div_strategy == SH_DIV_INV20U || sh_div_strategy == SH_DIV_INV20L \
227 || sh_div_strategy == SH_DIV_INV_CALL \
228 || sh_div_strategy == SH_DIV_INV_CALL2 || sh_div_strategy == SH_DIV_INV_FP)
229 #define TARGET_DIVIDE_FP (sh_div_strategy == SH_DIV_FP)
230 #define TARGET_DIVIDE_INV_FP (sh_div_strategy == SH_DIV_INV_FP)
231 #define TARGET_DIVIDE_CALL2 (sh_div_strategy == SH_DIV_CALL2)
232 #define TARGET_DIVIDE_INV_MINLAT (sh_div_strategy == SH_DIV_INV_MINLAT)
233 #define TARGET_DIVIDE_INV20U (sh_div_strategy == SH_DIV_INV20U)
234 #define TARGET_DIVIDE_INV20L (sh_div_strategy == SH_DIV_INV20L)
235 #define TARGET_DIVIDE_INV_CALL (sh_div_strategy == SH_DIV_INV_CALL)
236 #define TARGET_DIVIDE_INV_CALL2 (sh_div_strategy == SH_DIV_INV_CALL2)
237 #define TARGET_DIVIDE_CALL_DIV1 (sh_div_strategy == SH_DIV_CALL_DIV1)
238 #define TARGET_DIVIDE_CALL_FP (sh_div_strategy == SH_DIV_CALL_FP)
239 #define TARGET_DIVIDE_CALL_TABLE (sh_div_strategy == SH_DIV_CALL_TABLE)
240
241 #define SELECT_SH1 (MASK_SH1)
242 #define SELECT_SH2 (MASK_SH2 | SELECT_SH1)
243 #define SELECT_SH2E (MASK_SH_E | MASK_SH2 | MASK_SH1 \
244 | MASK_FPU_SINGLE)
245 #define SELECT_SH2A (MASK_SH_E | MASK_HARD_SH2A \
246 | MASK_HARD_SH2A_DOUBLE \
247 | MASK_SH2 | MASK_SH1)
248 #define SELECT_SH2A_NOFPU (MASK_HARD_SH2A | MASK_SH2 | MASK_SH1)
249 #define SELECT_SH2A_SINGLE_ONLY (MASK_SH_E | MASK_HARD_SH2A | MASK_SH2 \
250 | MASK_SH1 | MASK_FPU_SINGLE)
251 #define SELECT_SH2A_SINGLE (MASK_SH_E | MASK_HARD_SH2A \
252 | MASK_FPU_SINGLE | MASK_HARD_SH2A_DOUBLE \
253 | MASK_SH2 | MASK_SH1)
254 #define SELECT_SH3 (MASK_SH3 | SELECT_SH2)
255 #define SELECT_SH3E (MASK_SH_E | MASK_FPU_SINGLE | SELECT_SH3)
256 #define SELECT_SH4_NOFPU (MASK_HARD_SH4 | SELECT_SH3)
257 #define SELECT_SH4_SINGLE_ONLY (MASK_HARD_SH4 | SELECT_SH3E)
258 #define SELECT_SH4 (MASK_SH4 | MASK_SH_E | MASK_HARD_SH4 \
259 | SELECT_SH3)
260 #define SELECT_SH4_SINGLE (MASK_FPU_SINGLE | SELECT_SH4)
261 #define SELECT_SH4A_NOFPU (MASK_SH4A | SELECT_SH4_NOFPU)
262 #define SELECT_SH4A_SINGLE_ONLY (MASK_SH4A | SELECT_SH4_SINGLE_ONLY)
263 #define SELECT_SH4A (MASK_SH4A | SELECT_SH4)
264 #define SELECT_SH4A_SINGLE (MASK_SH4A | SELECT_SH4_SINGLE)
265 #define SELECT_SH5_64MEDIA (MASK_SH5 | MASK_SH4)
266 #define SELECT_SH5_64MEDIA_NOFPU (MASK_SH5)
267 #define SELECT_SH5_32MEDIA (MASK_SH5 | MASK_SH4 | MASK_SH_E)
268 #define SELECT_SH5_32MEDIA_NOFPU (MASK_SH5 | MASK_SH_E)
269 #define SELECT_SH5_COMPACT (MASK_SH5 | MASK_SH4 | SELECT_SH3E)
270 #define SELECT_SH5_COMPACT_NOFPU (MASK_SH5 | SELECT_SH3)
271
272 #if SUPPORT_SH1
273 #define SUPPORT_SH2 1
274 #endif
275 #if SUPPORT_SH2
276 #define SUPPORT_SH3 1
277 #endif
278 #if SUPPORT_SH3
279 #define SUPPORT_SH4_NOFPU 1
280 #endif
281 #if SUPPORT_SH4_NOFPU
282 #define SUPPORT_SH4A_NOFPU 1
283 #define SUPPORT_SH4AL 1
284 #define SUPPORT_SH2A_NOFPU 1
285 #endif
286
287 #if SUPPORT_SH2E
288 #define SUPPORT_SH3E 1
289 #endif
290 #if SUPPORT_SH3E
291 #define SUPPORT_SH4_SINGLE_ONLY 1
292 #define SUPPORT_SH4A_SINGLE_ONLY 1
293 #define SUPPORT_SH2A_SINGLE_ONLY 1
294 #endif
295
296 #if SUPPORT_SH4
297 #define SUPPORT_SH4A 1
298 #endif
299
300 #if SUPPORT_SH4_SINGLE
301 #define SUPPORT_SH4A_SINGLE 1
302 #endif
303
304 #if SUPPORT_SH5_COMPAT
305 #define SUPPORT_SH5_32MEDIA 1
306 #endif
307
308 #if SUPPORT_SH5_COMPACT_NOFPU
309 #define SUPPORT_SH5_32MEDIA_NOFPU 1
310 #endif
311
312 #define SUPPORT_ANY_SH5_32MEDIA \
313 (SUPPORT_SH5_32MEDIA || SUPPORT_SH5_32MEDIA_NOFPU)
314 #define SUPPORT_ANY_SH5_64MEDIA \
315 (SUPPORT_SH5_64MEDIA || SUPPORT_SH5_64MEDIA_NOFPU)
316 #define SUPPORT_ANY_SH5 \
317 (SUPPORT_ANY_SH5_32MEDIA || SUPPORT_ANY_SH5_64MEDIA)
318
319 /* Reset all target-selection flags. */
320 #define MASK_ARCH (MASK_SH1 | MASK_SH2 | MASK_SH3 | MASK_SH_E | MASK_SH4 \
321 | MASK_HARD_SH2A | MASK_HARD_SH2A_DOUBLE | MASK_SH4A \
322 | MASK_HARD_SH4 | MASK_FPU_SINGLE | MASK_SH5)
323
324 /* This defaults us to big-endian. */
325 #ifndef TARGET_ENDIAN_DEFAULT
326 #define TARGET_ENDIAN_DEFAULT 0
327 #endif
328
329 #ifndef TARGET_OPT_DEFAULT
330 #define TARGET_OPT_DEFAULT MASK_ADJUST_UNROLL
331 #endif
332
333 #define TARGET_DEFAULT \
334 (TARGET_CPU_DEFAULT | TARGET_ENDIAN_DEFAULT | TARGET_OPT_DEFAULT)
335
336 #ifndef SH_MULTILIB_CPU_DEFAULT
337 #define SH_MULTILIB_CPU_DEFAULT "m1"
338 #endif
339
340 #if TARGET_ENDIAN_DEFAULT
341 #define MULTILIB_DEFAULTS { "ml", SH_MULTILIB_CPU_DEFAULT }
342 #else
343 #define MULTILIB_DEFAULTS { "mb", SH_MULTILIB_CPU_DEFAULT }
344 #endif
345
346 #define CPP_SPEC " %(subtarget_cpp_spec) "
347
348 #ifndef SUBTARGET_CPP_SPEC
349 #define SUBTARGET_CPP_SPEC ""
350 #endif
351
352 #ifndef SUBTARGET_EXTRA_SPECS
353 #define SUBTARGET_EXTRA_SPECS
354 #endif
355
356 #define EXTRA_SPECS \
357 { "subtarget_cpp_spec", SUBTARGET_CPP_SPEC }, \
358 { "link_emul_prefix", LINK_EMUL_PREFIX }, \
359 { "link_default_cpu_emul", LINK_DEFAULT_CPU_EMUL }, \
360 { "subtarget_link_emul_suffix", SUBTARGET_LINK_EMUL_SUFFIX }, \
361 { "subtarget_link_spec", SUBTARGET_LINK_SPEC }, \
362 { "subtarget_asm_endian_spec", SUBTARGET_ASM_ENDIAN_SPEC }, \
363 { "subtarget_asm_relax_spec", SUBTARGET_ASM_RELAX_SPEC }, \
364 { "subtarget_asm_isa_spec", SUBTARGET_ASM_ISA_SPEC }, \
365 { "subtarget_asm_spec", SUBTARGET_ASM_SPEC }, \
366 SUBTARGET_EXTRA_SPECS
367
368 #if TARGET_CPU_DEFAULT & MASK_HARD_SH4
369 #define SUBTARGET_ASM_RELAX_SPEC "%{!m1:%{!m2:%{!m3*:%{!m5*:-isa=sh4-up}}}}"
370 #else
371 #define SUBTARGET_ASM_RELAX_SPEC "%{m4*:-isa=sh4-up}"
372 #endif
373
374 #define SH_ASM_SPEC \
375 "%(subtarget_asm_endian_spec) %{mrelax:-relax %(subtarget_asm_relax_spec)}\
376 %(subtarget_asm_isa_spec) %(subtarget_asm_spec)\
377 %{m2a:--isa=sh2a} \
378 %{m2a-single:--isa=sh2a} \
379 %{m2a-single-only:--isa=sh2a} \
380 %{m2a-nofpu:--isa=sh2a-nofpu} \
381 %{m5-compact*:--isa=SHcompact} \
382 %{m5-32media*:--isa=SHmedia --abi=32} \
383 %{m5-64media*:--isa=SHmedia --abi=64} \
384 %{m4al:-dsp} %{mcut2-workaround:-cut2-workaround}"
385
386 #define ASM_SPEC SH_ASM_SPEC
387
388 #ifndef SUBTARGET_ASM_ENDIAN_SPEC
389 #if TARGET_ENDIAN_DEFAULT == MASK_LITTLE_ENDIAN
390 #define SUBTARGET_ASM_ENDIAN_SPEC "%{mb:-big} %{!mb:-little}"
391 #else
392 #define SUBTARGET_ASM_ENDIAN_SPEC "%{ml:-little} %{!ml:-big}"
393 #endif
394 #endif
395
396 #if STRICT_NOFPU == 1
397 /* Strict nofpu means that the compiler should tell the assembler
398 to reject FPU instructions. E.g. from ASM inserts. */
399 #if TARGET_CPU_DEFAULT & MASK_HARD_SH4 && !(TARGET_CPU_DEFAULT & MASK_SH_E)
400 #define SUBTARGET_ASM_ISA_SPEC "%{!m1:%{!m2:%{!m3*:%{m4-nofpu|!m4*:%{!m5:-isa=sh4-nofpu}}}}}"
401 #else
402 /* If there were an -isa option for sh5-nofpu then it would also go here. */
403 #define SUBTARGET_ASM_ISA_SPEC \
404 "%{m4-nofpu:-isa=sh4-nofpu} " ASM_ISA_DEFAULT_SPEC
405 #endif
406 #else /* ! STRICT_NOFPU */
407 #define SUBTARGET_ASM_ISA_SPEC ASM_ISA_DEFAULT_SPEC
408 #endif
409
410 #ifndef SUBTARGET_ASM_SPEC
411 #define SUBTARGET_ASM_SPEC ""
412 #endif
413
414 #if TARGET_ENDIAN_DEFAULT == MASK_LITTLE_ENDIAN
415 #define LINK_EMUL_PREFIX "sh%{!mb:l}"
416 #else
417 #define LINK_EMUL_PREFIX "sh%{ml:l}"
418 #endif
419
420 #if TARGET_CPU_DEFAULT & MASK_SH5
421 #if TARGET_CPU_DEFAULT & MASK_SH_E
422 #define LINK_DEFAULT_CPU_EMUL "32"
423 #if TARGET_CPU_DEFAULT & MASK_SH1
424 #define ASM_ISA_SPEC_DEFAULT "--isa=SHcompact"
425 #else
426 #define ASM_ISA_SPEC_DEFAULT "--isa=SHmedia --abi=32"
427 #endif /* MASK_SH1 */
428 #else /* !MASK_SH_E */
429 #define LINK_DEFAULT_CPU_EMUL "64"
430 #define ASM_ISA_SPEC_DEFAULT "--isa=SHmedia --abi=64"
431 #endif /* MASK_SH_E */
432 #define ASM_ISA_DEFAULT_SPEC \
433 " %{!m1:%{!m2*:%{!m3*:%{!m4*:%{!m5*:" ASM_ISA_SPEC_DEFAULT "}}}}}"
434 #else /* !MASK_SH5 */
435 #define LINK_DEFAULT_CPU_EMUL ""
436 #define ASM_ISA_DEFAULT_SPEC ""
437 #endif /* MASK_SH5 */
438
439 #define SUBTARGET_LINK_EMUL_SUFFIX ""
440 #define SUBTARGET_LINK_SPEC ""
441
442 /* svr4.h redefines LINK_SPEC inappropriately, so go via SH_LINK_SPEC,
443 so that we can undo the damage without code replication. */
444 #define LINK_SPEC SH_LINK_SPEC
445
446 #define SH_LINK_SPEC "\
447 -m %(link_emul_prefix)\
448 %{m5-compact*|m5-32media*:32}\
449 %{m5-64media*:64}\
450 %{!m1:%{!m2:%{!m3*:%{!m4*:%{!m5*:%(link_default_cpu_emul)}}}}}\
451 %(subtarget_link_emul_suffix) \
452 %{mrelax:-relax} %(subtarget_link_spec)"
453
454 #ifndef SH_DIV_STR_FOR_SIZE
455 #define SH_DIV_STR_FOR_SIZE "call"
456 #endif
457
458 #define DRIVER_SELF_SPECS "%{m2a:%{ml:%eSH2a does not support little-endian}}"
459 #define OPTIMIZATION_OPTIONS(LEVEL,SIZE) \
460 do { \
461 if (LEVEL) \
462 { \
463 flag_omit_frame_pointer = -1; \
464 if (! SIZE) \
465 sh_div_str = "inv:minlat"; \
466 } \
467 if (SIZE) \
468 { \
469 target_flags |= MASK_SMALLCODE; \
470 sh_div_str = SH_DIV_STR_FOR_SIZE ; \
471 } \
472 /* We can't meaningfully test TARGET_SHMEDIA here, because -m options \
473 haven't been parsed yet, hence we'd read only the default. \
474 sh_target_reg_class will return NO_REGS if this is not SHMEDIA, so \
475 it's OK to always set flag_branch_target_load_optimize. */ \
476 if (LEVEL > 1) \
477 { \
478 flag_branch_target_load_optimize = 1; \
479 if (! (SIZE)) \
480 target_flags |= MASK_SAVE_ALL_TARGET_REGS; \
481 } \
482 /* Likewise, we can't meaningfully test TARGET_SH2E / TARGET_IEEE \
483 here, so leave it to OVERRIDE_OPTIONS to set \
484 flag_finite_math_only. We set it to 2 here so we know if the user \
485 explicitly requested this to be on or off. */ \
486 flag_finite_math_only = 2; \
487 /* If flag_schedule_insns is 1, we set it to 2 here so we know if \
488 the user explicitly requested this to be on or off. */ \
489 if (flag_schedule_insns > 0) \
490 flag_schedule_insns = 2; \
491 } while (0)
492
493 #define ASSEMBLER_DIALECT assembler_dialect
494
495 extern int assembler_dialect;
496
497 enum sh_divide_strategy_e {
498 /* SH5 strategies. */
499 SH_DIV_CALL,
500 SH_DIV_CALL2,
501 SH_DIV_FP, /* We could do this also for SH4. */
502 SH_DIV_INV,
503 SH_DIV_INV_MINLAT,
504 SH_DIV_INV20U,
505 SH_DIV_INV20L,
506 SH_DIV_INV_CALL,
507 SH_DIV_INV_CALL2,
508 SH_DIV_INV_FP,
509 /* SH1 .. SH4 strategies. Because of the small number of registers
510 available, the compiler uses knowledge of the actual set of registers
511 being clobbered by the different functions called. */
512 SH_DIV_CALL_DIV1, /* No FPU, medium size, highest latency. */
513 SH_DIV_CALL_FP, /* FPU needed, small size, high latency. */
514 SH_DIV_CALL_TABLE, /* No FPU, large size, medium latency. */
515 SH_DIV_INTRINSIC
516 };
517
518 extern enum sh_divide_strategy_e sh_div_strategy;
519
520 #ifndef SH_DIV_STRATEGY_DEFAULT
521 #define SH_DIV_STRATEGY_DEFAULT SH_DIV_CALL
522 #endif
523
524 #define OVERRIDE_OPTIONS \
525 do { \
526 int regno; \
527 \
528 if (flag_finite_math_only == 2) \
529 flag_finite_math_only \
530 = !flag_signaling_nans && TARGET_SH2E && ! TARGET_IEEE; \
531 if (TARGET_SH2E && !flag_finite_math_only) \
532 target_flags |= MASK_IEEE; \
533 sh_cpu = CPU_SH1; \
534 assembler_dialect = 0; \
535 if (TARGET_SH2) \
536 sh_cpu = CPU_SH2; \
537 if (TARGET_SH2E) \
538 sh_cpu = CPU_SH2E; \
539 if (TARGET_SH2A) \
540 { \
541 sh_cpu = CPU_SH2A; \
542 if (TARGET_SH2A_DOUBLE) \
543 target_flags |= MASK_FMOVD; \
544 } \
545 if (TARGET_SH3) \
546 sh_cpu = CPU_SH3; \
547 if (TARGET_SH3E) \
548 sh_cpu = CPU_SH3E; \
549 if (TARGET_SH4) \
550 { \
551 assembler_dialect = 1; \
552 sh_cpu = CPU_SH4; \
553 } \
554 if (TARGET_SH4A_ARCH) \
555 { \
556 assembler_dialect = 1; \
557 sh_cpu = CPU_SH4A; \
558 } \
559 if (TARGET_SH5) \
560 { \
561 sh_cpu = CPU_SH5; \
562 target_flags |= MASK_ALIGN_DOUBLE; \
563 if (TARGET_SHMEDIA_FPU) \
564 target_flags |= MASK_FMOVD; \
565 if (TARGET_SHMEDIA) \
566 { \
567 /* There are no delay slots on SHmedia. */ \
568 flag_delayed_branch = 0; \
569 /* Relaxation isn't yet supported for SHmedia */ \
570 target_flags &= ~MASK_RELAX; \
571 /* After reload, if conversion does little good but can cause \
572 ICEs: \
573 - find_if_block doesn't do anything for SH because we don't\
574 have conditional execution patterns. (We use conditional\
575 move patterns, which are handled differently, and only \
576 before reload). \
577 - find_cond_trap doesn't do anything for the SH because we \
578 don't have conditional traps. \
579 - find_if_case_1 uses redirect_edge_and_branch_force in \
580 the only path that does an optimization, and this causes \
581 an ICE when branch targets are in registers. \
582 - find_if_case_2 doesn't do anything for the SHmedia after \
583 reload except when it can redirect a tablejump - and \
584 that's rather rare. */ \
585 flag_if_conversion2 = 0; \
586 if (! strcmp (sh_div_str, "call")) \
587 sh_div_strategy = SH_DIV_CALL; \
588 else if (! strcmp (sh_div_str, "call2")) \
589 sh_div_strategy = SH_DIV_CALL2; \
590 if (! strcmp (sh_div_str, "fp") && TARGET_FPU_ANY) \
591 sh_div_strategy = SH_DIV_FP; \
592 else if (! strcmp (sh_div_str, "inv")) \
593 sh_div_strategy = SH_DIV_INV; \
594 else if (! strcmp (sh_div_str, "inv:minlat")) \
595 sh_div_strategy = SH_DIV_INV_MINLAT; \
596 else if (! strcmp (sh_div_str, "inv20u")) \
597 sh_div_strategy = SH_DIV_INV20U; \
598 else if (! strcmp (sh_div_str, "inv20l")) \
599 sh_div_strategy = SH_DIV_INV20L; \
600 else if (! strcmp (sh_div_str, "inv:call2")) \
601 sh_div_strategy = SH_DIV_INV_CALL2; \
602 else if (! strcmp (sh_div_str, "inv:call")) \
603 sh_div_strategy = SH_DIV_INV_CALL; \
604 else if (! strcmp (sh_div_str, "inv:fp")) \
605 { \
606 if (TARGET_FPU_ANY) \
607 sh_div_strategy = SH_DIV_INV_FP; \
608 else \
609 sh_div_strategy = SH_DIV_INV; \
610 } \
611 } \
612 /* -fprofile-arcs needs a working libgcov . In unified tree \
613 configurations with newlib, this requires to configure with \
614 --with-newlib --with-headers. But there is no way to check \
615 here we have a working libgcov, so just assume that we have. */\
616 if (profile_flag) \
617 warning (0, "profiling is still experimental for this target");\
618 } \
619 else \
620 { \
621 /* Only the sh64-elf assembler fully supports .quad properly. */\
622 targetm.asm_out.aligned_op.di = NULL; \
623 targetm.asm_out.unaligned_op.di = NULL; \
624 } \
625 if (TARGET_SH1) \
626 { \
627 if (! strcmp (sh_div_str, "call-div1")) \
628 sh_div_strategy = SH_DIV_CALL_DIV1; \
629 else if (! strcmp (sh_div_str, "call-fp") \
630 && (TARGET_FPU_DOUBLE \
631 || (TARGET_HARD_SH4 && TARGET_SH2E) \
632 || (TARGET_SHCOMPACT && TARGET_FPU_ANY))) \
633 sh_div_strategy = SH_DIV_CALL_FP; \
634 else if (! strcmp (sh_div_str, "call-table") && TARGET_SH2) \
635 sh_div_strategy = SH_DIV_CALL_TABLE; \
636 else \
637 /* Pick one that makes most sense for the target in general. \
638 It is not much good to use different functions depending \
639 on -Os, since then we'll end up with two different functions \
640 when some of the code is compiled for size, and some for \
641 speed. */ \
642 \
643 /* SH4 tends to emphasize speed. */ \
644 if (TARGET_HARD_SH4) \
645 sh_div_strategy = SH_DIV_CALL_TABLE; \
646 /* These have their own way of doing things. */ \
647 else if (TARGET_SH2A) \
648 sh_div_strategy = SH_DIV_INTRINSIC; \
649 /* ??? Should we use the integer SHmedia function instead? */ \
650 else if (TARGET_SHCOMPACT && TARGET_FPU_ANY) \
651 sh_div_strategy = SH_DIV_CALL_FP; \
652 /* SH1 .. SH3 cores often go into small-footprint systems, so \
653 default to the smallest implementation available. */ \
654 else if (TARGET_SH2) /* ??? EXPERIMENTAL */ \
655 sh_div_strategy = SH_DIV_CALL_TABLE; \
656 else \
657 sh_div_strategy = SH_DIV_CALL_DIV1; \
658 } \
659 if (!TARGET_SH1) \
660 TARGET_PRETEND_CMOVE = 0; \
661 if (sh_divsi3_libfunc[0]) \
662 ; /* User supplied - leave it alone. */ \
663 else if (TARGET_DIVIDE_CALL_FP) \
664 sh_divsi3_libfunc = "__sdivsi3_i4"; \
665 else if (TARGET_DIVIDE_CALL_TABLE) \
666 sh_divsi3_libfunc = "__sdivsi3_i4i"; \
667 else if (TARGET_SH5) \
668 sh_divsi3_libfunc = "__sdivsi3_1"; \
669 else \
670 sh_divsi3_libfunc = "__sdivsi3"; \
671 if (TARGET_FMOVD) \
672 reg_class_from_letter['e' - 'a'] = NO_REGS; \
673 \
674 for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++) \
675 if (! VALID_REGISTER_P (regno)) \
676 sh_register_names[regno][0] = '\0'; \
677 \
678 for (regno = 0; regno < ADDREGNAMES_SIZE; regno++) \
679 if (! VALID_REGISTER_P (ADDREGNAMES_REGNO (regno))) \
680 sh_additional_register_names[regno][0] = '\0'; \
681 \
682 if (flag_omit_frame_pointer < 0) \
683 { \
684 /* The debugging information is sufficient, \
685 but gdb doesn't implement this yet */ \
686 if (0) \
687 flag_omit_frame_pointer \
688 = (PREFERRED_DEBUGGING_TYPE == DWARF2_DEBUG); \
689 else \
690 flag_omit_frame_pointer = 0; \
691 } \
692 \
693 if ((flag_pic && ! TARGET_PREFERGOT) \
694 || (TARGET_SHMEDIA && !TARGET_PT_FIXED)) \
695 flag_no_function_cse = 1; \
696 \
697 if (SMALL_REGISTER_CLASSES) \
698 { \
699 /* Never run scheduling before reload, since that can \
700 break global alloc, and generates slower code anyway due \
701 to the pressure on R0. */ \
702 /* Enable sched1 for SH4; ready queue will be reordered by \
703 the target hooks when pressure is high. We can not do this for \
704 SH3 and lower as they give spill failures for R0. */ \
705 if (!TARGET_HARD_SH4) \
706 flag_schedule_insns = 0; \
707 /* ??? Current exception handling places basic block boundaries \
708 after call_insns. It causes the high pressure on R0 and gives \
709 spill failures for R0 in reload. See PR 22553 and the thread \
710 on gcc-patches \
711 <http://gcc.gnu.org/ml/gcc-patches/2005-10/msg00816.html>. */ \
712 else if (flag_exceptions) \
713 { \
714 if (flag_schedule_insns == 1) \
715 warning (0, "ignoring -fschedule-insns because of exception handling bug"); \
716 flag_schedule_insns = 0; \
717 } \
718 } \
719 \
720 if (align_loops == 0) \
721 align_loops = 1 << (TARGET_SH5 ? 3 : 2); \
722 if (align_jumps == 0) \
723 align_jumps = 1 << CACHE_LOG; \
724 else if (align_jumps < (TARGET_SHMEDIA ? 4 : 2)) \
725 align_jumps = TARGET_SHMEDIA ? 4 : 2; \
726 \
727 /* Allocation boundary (in *bytes*) for the code of a function. \
728 SH1: 32 bit alignment is faster, because instructions are always \
729 fetched as a pair from a longword boundary. \
730 SH2 .. SH5 : align to cache line start. */ \
731 if (align_functions == 0) \
732 align_functions \
733 = TARGET_SMALLCODE ? FUNCTION_BOUNDARY/8 : (1 << CACHE_LOG); \
734 /* The linker relaxation code breaks when a function contains \
735 alignments that are larger than that at the start of a \
736 compilation unit. */ \
737 if (TARGET_RELAX) \
738 { \
739 int min_align \
740 = align_loops > align_jumps ? align_loops : align_jumps; \
741 \
742 /* Also take possible .long constants / mova tables int account. */\
743 if (min_align < 4) \
744 min_align = 4; \
745 if (align_functions < min_align) \
746 align_functions = min_align; \
747 } \
748 } while (0)
749 \f
750 /* Target machine storage layout. */
751
752 /* Define this if most significant bit is lowest numbered
753 in instructions that operate on numbered bit-fields. */
754
755 #define BITS_BIG_ENDIAN 0
756
757 /* Define this if most significant byte of a word is the lowest numbered. */
758 #define BYTES_BIG_ENDIAN (TARGET_LITTLE_ENDIAN == 0)
759
760 /* Define this if most significant word of a multiword number is the lowest
761 numbered. */
762 #define WORDS_BIG_ENDIAN (TARGET_LITTLE_ENDIAN == 0)
763
764 /* Define this to set the endianness to use in libgcc2.c, which can
765 not depend on target_flags. */
766 #if defined(__LITTLE_ENDIAN__)
767 #define LIBGCC2_WORDS_BIG_ENDIAN 0
768 #else
769 #define LIBGCC2_WORDS_BIG_ENDIAN 1
770 #endif
771
772 #define MAX_BITS_PER_WORD 64
773
774 /* Width in bits of an `int'. We want just 32-bits, even if words are
775 longer. */
776 #define INT_TYPE_SIZE 32
777
778 /* Width in bits of a `long'. */
779 #define LONG_TYPE_SIZE (TARGET_SHMEDIA64 ? 64 : 32)
780
781 /* Width in bits of a `long long'. */
782 #define LONG_LONG_TYPE_SIZE 64
783
784 /* Width in bits of a `long double'. */
785 #define LONG_DOUBLE_TYPE_SIZE 64
786
787 /* Width of a word, in units (bytes). */
788 #define UNITS_PER_WORD (TARGET_SHMEDIA ? 8 : 4)
789 #define MIN_UNITS_PER_WORD 4
790
791 /* Scaling factor for Dwarf data offsets for CFI information.
792 The dwarf2out.c default would use -UNITS_PER_WORD, which is -8 for
793 SHmedia; however, since we do partial register saves for the registers
794 visible to SHcompact, and for target registers for SHMEDIA32, we have
795 to allow saves that are only 4-byte aligned. */
796 #define DWARF_CIE_DATA_ALIGNMENT -4
797
798 /* Width in bits of a pointer.
799 See also the macro `Pmode' defined below. */
800 #define POINTER_SIZE (TARGET_SHMEDIA64 ? 64 : 32)
801
802 /* Allocation boundary (in *bits*) for storing arguments in argument list. */
803 #define PARM_BOUNDARY (TARGET_SH5 ? 64 : 32)
804
805 /* Boundary (in *bits*) on which stack pointer should be aligned. */
806 #define STACK_BOUNDARY BIGGEST_ALIGNMENT
807
808 /* The log (base 2) of the cache line size, in bytes. Processors prior to
809 SH2 have no actual cache, but they fetch code in chunks of 4 bytes.
810 The SH2/3 have 16 byte cache lines, and the SH4 has a 32 byte cache line */
811 #define CACHE_LOG (TARGET_CACHE32 ? 5 : TARGET_SH2 ? 4 : 2)
812
813 /* ABI given & required minimum allocation boundary (in *bits*) for the
814 code of a function. */
815 #define FUNCTION_BOUNDARY (16 << TARGET_SHMEDIA)
816
817 /* On SH5, the lowest bit is used to indicate SHmedia functions, so
818 the vbit must go into the delta field of
819 pointers-to-member-functions. */
820 #define TARGET_PTRMEMFUNC_VBIT_LOCATION \
821 (TARGET_SH5 ? ptrmemfunc_vbit_in_delta : ptrmemfunc_vbit_in_pfn)
822
823 /* Alignment of field after `int : 0' in a structure. */
824 #define EMPTY_FIELD_BOUNDARY 32
825
826 /* No data type wants to be aligned rounder than this. */
827 #define BIGGEST_ALIGNMENT (TARGET_ALIGN_DOUBLE ? 64 : 32)
828
829 /* The best alignment to use in cases where we have a choice. */
830 #define FASTEST_ALIGNMENT (TARGET_SH5 ? 64 : 32)
831
832 /* Make strings word-aligned so strcpy from constants will be faster. */
833 #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
834 ((TREE_CODE (EXP) == STRING_CST \
835 && (ALIGN) < FASTEST_ALIGNMENT) \
836 ? FASTEST_ALIGNMENT : (ALIGN))
837
838 /* get_mode_alignment assumes complex values are always held in multiple
839 registers, but that is not the case on the SH; CQImode and CHImode are
840 held in a single integer register. SH5 also holds CSImode and SCmode
841 values in integer registers. This is relevant for argument passing on
842 SHcompact as we use a stack temp in order to pass CSImode by reference. */
843 #define LOCAL_ALIGNMENT(TYPE, ALIGN) \
844 ((GET_MODE_CLASS (TYPE_MODE (TYPE)) == MODE_COMPLEX_INT \
845 || GET_MODE_CLASS (TYPE_MODE (TYPE)) == MODE_COMPLEX_FLOAT) \
846 ? (unsigned) MIN (BIGGEST_ALIGNMENT, GET_MODE_BITSIZE (TYPE_MODE (TYPE))) \
847 : (unsigned) ALIGN)
848
849 /* Make arrays of chars word-aligned for the same reasons. */
850 #define DATA_ALIGNMENT(TYPE, ALIGN) \
851 (TREE_CODE (TYPE) == ARRAY_TYPE \
852 && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \
853 && (ALIGN) < FASTEST_ALIGNMENT ? FASTEST_ALIGNMENT : (ALIGN))
854
855 /* Number of bits which any structure or union's size must be a
856 multiple of. Each structure or union's size is rounded up to a
857 multiple of this. */
858 #define STRUCTURE_SIZE_BOUNDARY (TARGET_PADSTRUCT ? 32 : 8)
859
860 /* Set this nonzero if move instructions will actually fail to work
861 when given unaligned data. */
862 #define STRICT_ALIGNMENT 1
863
864 /* If LABEL_AFTER_BARRIER demands an alignment, return its base 2 logarithm. */
865 #define LABEL_ALIGN_AFTER_BARRIER(LABEL_AFTER_BARRIER) \
866 barrier_align (LABEL_AFTER_BARRIER)
867
868 #define LOOP_ALIGN(A_LABEL) \
869 ((! optimize || TARGET_HARD_SH4 || TARGET_SMALLCODE) \
870 ? 0 : sh_loop_align (A_LABEL))
871
872 #define LABEL_ALIGN(A_LABEL) \
873 ( \
874 (PREV_INSN (A_LABEL) \
875 && GET_CODE (PREV_INSN (A_LABEL)) == INSN \
876 && GET_CODE (PATTERN (PREV_INSN (A_LABEL))) == UNSPEC_VOLATILE \
877 && XINT (PATTERN (PREV_INSN (A_LABEL)), 1) == UNSPECV_ALIGN) \
878 /* explicit alignment insn in constant tables. */ \
879 ? INTVAL (XVECEXP (PATTERN (PREV_INSN (A_LABEL)), 0, 0)) \
880 : 0)
881
882 /* Jump tables must be 32 bit aligned, no matter the size of the element. */
883 #define ADDR_VEC_ALIGN(ADDR_VEC) 2
884
885 /* The base two logarithm of the known minimum alignment of an insn length. */
886 #define INSN_LENGTH_ALIGNMENT(A_INSN) \
887 (GET_CODE (A_INSN) == INSN \
888 ? 1 << TARGET_SHMEDIA \
889 : GET_CODE (A_INSN) == JUMP_INSN || GET_CODE (A_INSN) == CALL_INSN \
890 ? 1 << TARGET_SHMEDIA \
891 : CACHE_LOG)
892 \f
893 /* Standard register usage. */
894
895 /* Register allocation for the Renesas calling convention:
896
897 r0 arg return
898 r1..r3 scratch
899 r4..r7 args in
900 r8..r13 call saved
901 r14 frame pointer/call saved
902 r15 stack pointer
903 ap arg pointer (doesn't really exist, always eliminated)
904 pr subroutine return address
905 t t bit
906 mach multiply/accumulate result, high part
907 macl multiply/accumulate result, low part.
908 fpul fp/int communication register
909 rap return address pointer register
910 fr0 fp arg return
911 fr1..fr3 scratch floating point registers
912 fr4..fr11 fp args in
913 fr12..fr15 call saved floating point registers */
914
915 #define MAX_REGISTER_NAME_LENGTH 5
916 extern char sh_register_names[][MAX_REGISTER_NAME_LENGTH + 1];
917
918 #define SH_REGISTER_NAMES_INITIALIZER \
919 { \
920 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
921 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
922 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \
923 "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", \
924 "r32", "r33", "r34", "r35", "r36", "r37", "r38", "r39", \
925 "r40", "r41", "r42", "r43", "r44", "r45", "r46", "r47", \
926 "r48", "r49", "r50", "r51", "r52", "r53", "r54", "r55", \
927 "r56", "r57", "r58", "r59", "r60", "r61", "r62", "r63", \
928 "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", \
929 "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", \
930 "fr16", "fr17", "fr18", "fr19", "fr20", "fr21", "fr22", "fr23", \
931 "fr24", "fr25", "fr26", "fr27", "fr28", "fr29", "fr30", "fr31", \
932 "fr32", "fr33", "fr34", "fr35", "fr36", "fr37", "fr38", "fr39", \
933 "fr40", "fr41", "fr42", "fr43", "fr44", "fr45", "fr46", "fr47", \
934 "fr48", "fr49", "fr50", "fr51", "fr52", "fr53", "fr54", "fr55", \
935 "fr56", "fr57", "fr58", "fr59", "fr60", "fr61", "fr62", "fr63", \
936 "tr0", "tr1", "tr2", "tr3", "tr4", "tr5", "tr6", "tr7", \
937 "xd0", "xd2", "xd4", "xd6", "xd8", "xd10", "xd12", "xd14", \
938 "gbr", "ap", "pr", "t", "mach", "macl", "fpul", "fpscr", \
939 "rap", "sfp" \
940 }
941
942 #define REGNAMES_ARR_INDEX_1(index) \
943 (sh_register_names[index])
944 #define REGNAMES_ARR_INDEX_2(index) \
945 REGNAMES_ARR_INDEX_1 ((index)), REGNAMES_ARR_INDEX_1 ((index)+1)
946 #define REGNAMES_ARR_INDEX_4(index) \
947 REGNAMES_ARR_INDEX_2 ((index)), REGNAMES_ARR_INDEX_2 ((index)+2)
948 #define REGNAMES_ARR_INDEX_8(index) \
949 REGNAMES_ARR_INDEX_4 ((index)), REGNAMES_ARR_INDEX_4 ((index)+4)
950 #define REGNAMES_ARR_INDEX_16(index) \
951 REGNAMES_ARR_INDEX_8 ((index)), REGNAMES_ARR_INDEX_8 ((index)+8)
952 #define REGNAMES_ARR_INDEX_32(index) \
953 REGNAMES_ARR_INDEX_16 ((index)), REGNAMES_ARR_INDEX_16 ((index)+16)
954 #define REGNAMES_ARR_INDEX_64(index) \
955 REGNAMES_ARR_INDEX_32 ((index)), REGNAMES_ARR_INDEX_32 ((index)+32)
956
957 #define REGISTER_NAMES \
958 { \
959 REGNAMES_ARR_INDEX_64 (0), \
960 REGNAMES_ARR_INDEX_64 (64), \
961 REGNAMES_ARR_INDEX_8 (128), \
962 REGNAMES_ARR_INDEX_8 (136), \
963 REGNAMES_ARR_INDEX_8 (144), \
964 REGNAMES_ARR_INDEX_2 (152) \
965 }
966
967 #define ADDREGNAMES_SIZE 32
968 #define MAX_ADDITIONAL_REGISTER_NAME_LENGTH 4
969 extern char sh_additional_register_names[ADDREGNAMES_SIZE] \
970 [MAX_ADDITIONAL_REGISTER_NAME_LENGTH + 1];
971
972 #define SH_ADDITIONAL_REGISTER_NAMES_INITIALIZER \
973 { \
974 "dr0", "dr2", "dr4", "dr6", "dr8", "dr10", "dr12", "dr14", \
975 "dr16", "dr18", "dr20", "dr22", "dr24", "dr26", "dr28", "dr30", \
976 "dr32", "dr34", "dr36", "dr38", "dr40", "dr42", "dr44", "dr46", \
977 "dr48", "dr50", "dr52", "dr54", "dr56", "dr58", "dr60", "dr62" \
978 }
979
980 #define ADDREGNAMES_REGNO(index) \
981 ((index < 32) ? (FIRST_FP_REG + (index) * 2) \
982 : (-1))
983
984 #define ADDREGNAMES_ARR_INDEX_1(index) \
985 { (sh_additional_register_names[index]), ADDREGNAMES_REGNO (index) }
986 #define ADDREGNAMES_ARR_INDEX_2(index) \
987 ADDREGNAMES_ARR_INDEX_1 ((index)), ADDREGNAMES_ARR_INDEX_1 ((index)+1)
988 #define ADDREGNAMES_ARR_INDEX_4(index) \
989 ADDREGNAMES_ARR_INDEX_2 ((index)), ADDREGNAMES_ARR_INDEX_2 ((index)+2)
990 #define ADDREGNAMES_ARR_INDEX_8(index) \
991 ADDREGNAMES_ARR_INDEX_4 ((index)), ADDREGNAMES_ARR_INDEX_4 ((index)+4)
992 #define ADDREGNAMES_ARR_INDEX_16(index) \
993 ADDREGNAMES_ARR_INDEX_8 ((index)), ADDREGNAMES_ARR_INDEX_8 ((index)+8)
994 #define ADDREGNAMES_ARR_INDEX_32(index) \
995 ADDREGNAMES_ARR_INDEX_16 ((index)), ADDREGNAMES_ARR_INDEX_16 ((index)+16)
996
997 #define ADDITIONAL_REGISTER_NAMES \
998 { \
999 ADDREGNAMES_ARR_INDEX_32 (0) \
1000 }
1001
1002 /* Number of actual hardware registers.
1003 The hardware registers are assigned numbers for the compiler
1004 from 0 to just below FIRST_PSEUDO_REGISTER.
1005 All registers that the compiler knows about must be given numbers,
1006 even those that are not normally considered general registers. */
1007
1008 /* There are many other relevant definitions in sh.md's md_constants. */
1009
1010 #define FIRST_GENERAL_REG R0_REG
1011 #define LAST_GENERAL_REG (FIRST_GENERAL_REG + (TARGET_SHMEDIA ? 63 : 15))
1012 #define FIRST_FP_REG DR0_REG
1013 #define LAST_FP_REG (FIRST_FP_REG + \
1014 (TARGET_SHMEDIA_FPU ? 63 : TARGET_SH2E ? 15 : -1))
1015 #define FIRST_XD_REG XD0_REG
1016 #define LAST_XD_REG (FIRST_XD_REG + ((TARGET_SH4 && TARGET_FMOVD) ? 7 : -1))
1017 #define FIRST_TARGET_REG TR0_REG
1018 #define LAST_TARGET_REG (FIRST_TARGET_REG + (TARGET_SHMEDIA ? 7 : -1))
1019
1020 #define GENERAL_REGISTER_P(REGNO) \
1021 IN_RANGE ((REGNO), \
1022 (unsigned HOST_WIDE_INT) FIRST_GENERAL_REG, \
1023 (unsigned HOST_WIDE_INT) LAST_GENERAL_REG)
1024
1025 #define GENERAL_OR_AP_REGISTER_P(REGNO) \
1026 (GENERAL_REGISTER_P (REGNO) || ((REGNO) == AP_REG) \
1027 || ((REGNO) == FRAME_POINTER_REGNUM))
1028
1029 #define FP_REGISTER_P(REGNO) \
1030 ((int) (REGNO) >= FIRST_FP_REG && (int) (REGNO) <= LAST_FP_REG)
1031
1032 #define XD_REGISTER_P(REGNO) \
1033 ((int) (REGNO) >= FIRST_XD_REG && (int) (REGNO) <= LAST_XD_REG)
1034
1035 #define FP_OR_XD_REGISTER_P(REGNO) \
1036 (FP_REGISTER_P (REGNO) || XD_REGISTER_P (REGNO))
1037
1038 #define FP_ANY_REGISTER_P(REGNO) \
1039 (FP_REGISTER_P (REGNO) || XD_REGISTER_P (REGNO) || (REGNO) == FPUL_REG)
1040
1041 #define SPECIAL_REGISTER_P(REGNO) \
1042 ((REGNO) == GBR_REG || (REGNO) == T_REG \
1043 || (REGNO) == MACH_REG || (REGNO) == MACL_REG)
1044
1045 #define TARGET_REGISTER_P(REGNO) \
1046 ((int) (REGNO) >= FIRST_TARGET_REG && (int) (REGNO) <= LAST_TARGET_REG)
1047
1048 #define SHMEDIA_REGISTER_P(REGNO) \
1049 (GENERAL_REGISTER_P (REGNO) || FP_REGISTER_P (REGNO) \
1050 || TARGET_REGISTER_P (REGNO))
1051
1052 /* This is to be used in CONDITIONAL_REGISTER_USAGE, to mark registers
1053 that should be fixed. */
1054 #define VALID_REGISTER_P(REGNO) \
1055 (SHMEDIA_REGISTER_P (REGNO) || XD_REGISTER_P (REGNO) \
1056 || (REGNO) == AP_REG || (REGNO) == RAP_REG \
1057 || (REGNO) == FRAME_POINTER_REGNUM \
1058 || (TARGET_SH1 && (SPECIAL_REGISTER_P (REGNO) || (REGNO) == PR_REG)) \
1059 || (TARGET_SH2E && (REGNO) == FPUL_REG))
1060
1061 /* The mode that should be generally used to store a register by
1062 itself in the stack, or to load it back. */
1063 #define REGISTER_NATURAL_MODE(REGNO) \
1064 (FP_REGISTER_P (REGNO) ? SFmode \
1065 : XD_REGISTER_P (REGNO) ? DFmode \
1066 : TARGET_SHMEDIA && ! HARD_REGNO_CALL_PART_CLOBBERED ((REGNO), DImode) \
1067 ? DImode \
1068 : SImode)
1069
1070 #define FIRST_PSEUDO_REGISTER 154
1071
1072 /* Don't count soft frame pointer. */
1073 #define DWARF_FRAME_REGISTERS (FIRST_PSEUDO_REGISTER - 1)
1074
1075 /* 1 for registers that have pervasive standard uses
1076 and are not available for the register allocator.
1077
1078 Mach register is fixed 'cause it's only 10 bits wide for SH1.
1079 It is 32 bits wide for SH2. */
1080
1081 #define FIXED_REGISTERS \
1082 { \
1083 /* Regular registers. */ \
1084 0, 0, 0, 0, 0, 0, 0, 0, \
1085 0, 0, 0, 0, 0, 0, 0, 1, \
1086 /* r16 is reserved, r18 is the former pr. */ \
1087 1, 0, 0, 0, 0, 0, 0, 0, \
1088 /* r24 is reserved for the OS; r25, for the assembler or linker. */ \
1089 /* r26 is a global variable data pointer; r27 is for constants. */ \
1090 1, 1, 1, 1, 0, 0, 0, 0, \
1091 0, 0, 0, 0, 0, 0, 0, 0, \
1092 0, 0, 0, 0, 0, 0, 0, 0, \
1093 0, 0, 0, 0, 0, 0, 0, 0, \
1094 0, 0, 0, 0, 0, 0, 0, 1, \
1095 /* FP registers. */ \
1096 0, 0, 0, 0, 0, 0, 0, 0, \
1097 0, 0, 0, 0, 0, 0, 0, 0, \
1098 0, 0, 0, 0, 0, 0, 0, 0, \
1099 0, 0, 0, 0, 0, 0, 0, 0, \
1100 0, 0, 0, 0, 0, 0, 0, 0, \
1101 0, 0, 0, 0, 0, 0, 0, 0, \
1102 0, 0, 0, 0, 0, 0, 0, 0, \
1103 0, 0, 0, 0, 0, 0, 0, 0, \
1104 /* Branch target registers. */ \
1105 0, 0, 0, 0, 0, 0, 0, 0, \
1106 /* XD registers. */ \
1107 0, 0, 0, 0, 0, 0, 0, 0, \
1108 /*"gbr", "ap", "pr", "t", "mach", "macl", "fpul", "fpscr", */ \
1109 1, 1, 1, 1, 1, 1, 0, 1, \
1110 /*"rap", "sfp" */ \
1111 1, 1, \
1112 }
1113
1114 /* 1 for registers not available across function calls.
1115 These must include the FIXED_REGISTERS and also any
1116 registers that can be used without being saved.
1117 The latter must include the registers where values are returned
1118 and the register where structure-value addresses are passed.
1119 Aside from that, you can include as many other registers as you like. */
1120
1121 #define CALL_USED_REGISTERS \
1122 { \
1123 /* Regular registers. */ \
1124 1, 1, 1, 1, 1, 1, 1, 1, \
1125 /* R8 and R9 are call-clobbered on SH5, but not on earlier SH ABIs. \
1126 Only the lower 32bits of R10-R14 are guaranteed to be preserved \
1127 across SH5 function calls. */ \
1128 0, 0, 0, 0, 0, 0, 0, 1, \
1129 1, 1, 1, 1, 1, 1, 1, 1, \
1130 1, 1, 1, 1, 0, 0, 0, 0, \
1131 0, 0, 0, 0, 1, 1, 1, 1, \
1132 1, 1, 1, 1, 0, 0, 0, 0, \
1133 0, 0, 0, 0, 0, 0, 0, 0, \
1134 0, 0, 0, 0, 1, 1, 1, 1, \
1135 /* FP registers. */ \
1136 1, 1, 1, 1, 1, 1, 1, 1, \
1137 1, 1, 1, 1, 0, 0, 0, 0, \
1138 1, 1, 1, 1, 1, 1, 1, 1, \
1139 1, 1, 1, 1, 1, 1, 1, 1, \
1140 1, 1, 1, 1, 0, 0, 0, 0, \
1141 0, 0, 0, 0, 0, 0, 0, 0, \
1142 0, 0, 0, 0, 0, 0, 0, 0, \
1143 0, 0, 0, 0, 0, 0, 0, 0, \
1144 /* Branch target registers. */ \
1145 1, 1, 1, 1, 1, 0, 0, 0, \
1146 /* XD registers. */ \
1147 1, 1, 1, 1, 1, 1, 0, 0, \
1148 /*"gbr", "ap", "pr", "t", "mach", "macl", "fpul", "fpscr", */ \
1149 1, 1, 1, 1, 1, 1, 1, 1, \
1150 /*"rap", "sfp" */ \
1151 1, 1, \
1152 }
1153
1154 /* CONDITIONAL_REGISTER_USAGE might want to make a register call-used, yet
1155 fixed, like PIC_OFFSET_TABLE_REGNUM. */
1156 #define CALL_REALLY_USED_REGISTERS CALL_USED_REGISTERS
1157
1158 /* Only the lower 32-bits of R10-R14 are guaranteed to be preserved
1159 across SHcompact function calls. We can't tell whether a called
1160 function is SHmedia or SHcompact, so we assume it may be when
1161 compiling SHmedia code with the 32-bit ABI, since that's the only
1162 ABI that can be linked with SHcompact code. */
1163 #define HARD_REGNO_CALL_PART_CLOBBERED(REGNO,MODE) \
1164 (TARGET_SHMEDIA32 \
1165 && GET_MODE_SIZE (MODE) > 4 \
1166 && (((REGNO) >= FIRST_GENERAL_REG + 10 \
1167 && (REGNO) <= FIRST_GENERAL_REG + 15) \
1168 || TARGET_REGISTER_P (REGNO) \
1169 || (REGNO) == PR_MEDIA_REG))
1170
1171 /* Return number of consecutive hard regs needed starting at reg REGNO
1172 to hold something of mode MODE.
1173 This is ordinarily the length in words of a value of mode MODE
1174 but can be less for certain modes in special long registers.
1175
1176 On the SH all but the XD regs are UNITS_PER_WORD bits wide. */
1177
1178 #define HARD_REGNO_NREGS(REGNO, MODE) \
1179 (XD_REGISTER_P (REGNO) \
1180 ? ((GET_MODE_SIZE (MODE) + (2*UNITS_PER_WORD - 1)) / (2*UNITS_PER_WORD)) \
1181 : (TARGET_SHMEDIA && FP_REGISTER_P (REGNO)) \
1182 ? ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD/2 - 1) / (UNITS_PER_WORD/2)) \
1183 : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
1184
1185 /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
1186 We can allow any mode in any general register. The special registers
1187 only allow SImode. Don't allow any mode in the PR. */
1188
1189 /* We cannot hold DCmode values in the XD registers because alter_reg
1190 handles subregs of them incorrectly. We could work around this by
1191 spacing the XD registers like the DR registers, but this would require
1192 additional memory in every compilation to hold larger register vectors.
1193 We could hold SFmode / SCmode values in XD registers, but that
1194 would require a tertiary reload when reloading from / to memory,
1195 and a secondary reload to reload from / to general regs; that
1196 seems to be a loosing proposition. */
1197 /* We want to allow TImode FP regs so that when V4SFmode is loaded as TImode,
1198 it won't be ferried through GP registers first. */
1199 #define HARD_REGNO_MODE_OK(REGNO, MODE) \
1200 (SPECIAL_REGISTER_P (REGNO) ? (MODE) == SImode \
1201 : (REGNO) == FPUL_REG ? (MODE) == SImode || (MODE) == SFmode \
1202 : FP_REGISTER_P (REGNO) && (MODE) == SFmode \
1203 ? 1 \
1204 : (MODE) == V2SFmode \
1205 ? ((FP_REGISTER_P (REGNO) && ((REGNO) - FIRST_FP_REG) % 2 == 0) \
1206 || GENERAL_REGISTER_P (REGNO)) \
1207 : (MODE) == V4SFmode \
1208 ? ((FP_REGISTER_P (REGNO) && ((REGNO) - FIRST_FP_REG) % 4 == 0) \
1209 || GENERAL_REGISTER_P (REGNO)) \
1210 : (MODE) == V16SFmode \
1211 ? (TARGET_SHMEDIA \
1212 ? (FP_REGISTER_P (REGNO) && ((REGNO) - FIRST_FP_REG) % 16 == 0) \
1213 : (REGNO) == FIRST_XD_REG) \
1214 : FP_REGISTER_P (REGNO) \
1215 ? ((MODE) == SFmode || (MODE) == SImode \
1216 || ((TARGET_SH2E || TARGET_SHMEDIA) && (MODE) == SCmode) \
1217 || ((((TARGET_SH4 || TARGET_SH2A_DOUBLE) && (MODE) == DFmode) || (MODE) == DCmode \
1218 || (TARGET_SHMEDIA && ((MODE) == DFmode || (MODE) == DImode \
1219 || (MODE) == V2SFmode || (MODE) == TImode))) \
1220 && (((REGNO) - FIRST_FP_REG) & 1) == 0) \
1221 || ((TARGET_SH4 || TARGET_SHMEDIA) \
1222 && (MODE) == TImode \
1223 && (((REGNO) - FIRST_FP_REG) & 3) == 0)) \
1224 : XD_REGISTER_P (REGNO) \
1225 ? (MODE) == DFmode \
1226 : TARGET_REGISTER_P (REGNO) \
1227 ? ((MODE) == DImode || (MODE) == SImode || (MODE) == PDImode) \
1228 : (REGNO) == PR_REG ? (MODE) == SImode \
1229 : (REGNO) == FPSCR_REG ? (MODE) == PSImode \
1230 : 1)
1231
1232 /* Value is 1 if it is a good idea to tie two pseudo registers
1233 when one has mode MODE1 and one has mode MODE2.
1234 If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
1235 for any hard reg, then this must be 0 for correct output.
1236 That's the case for xd registers: we don't hold SFmode values in
1237 them, so we can't tie an SFmode pseudos with one in another
1238 floating-point mode. */
1239
1240 #define MODES_TIEABLE_P(MODE1, MODE2) \
1241 ((MODE1) == (MODE2) \
1242 || (TARGET_SHMEDIA \
1243 && GET_MODE_SIZE (MODE1) == GET_MODE_SIZE (MODE2) \
1244 && INTEGRAL_MODE_P (MODE1) && INTEGRAL_MODE_P (MODE2)) \
1245 || (GET_MODE_CLASS (MODE1) == GET_MODE_CLASS (MODE2) \
1246 && (TARGET_SHMEDIA ? ((GET_MODE_SIZE (MODE1) <= 4) \
1247 && (GET_MODE_SIZE (MODE2) <= 4)) \
1248 : ((MODE1) != SFmode && (MODE2) != SFmode))))
1249
1250 /* A C expression that is nonzero if hard register NEW_REG can be
1251 considered for use as a rename register for OLD_REG register */
1252
1253 #define HARD_REGNO_RENAME_OK(OLD_REG, NEW_REG) \
1254 sh_hard_regno_rename_ok (OLD_REG, NEW_REG)
1255
1256 /* Specify the registers used for certain standard purposes.
1257 The values of these macros are register numbers. */
1258
1259 /* Define this if the program counter is overloaded on a register. */
1260 /* #define PC_REGNUM 15*/
1261
1262 /* Register to use for pushing function arguments. */
1263 #define STACK_POINTER_REGNUM SP_REG
1264
1265 /* Base register for access to local variables of the function. */
1266 #define HARD_FRAME_POINTER_REGNUM FP_REG
1267
1268 /* Base register for access to local variables of the function. */
1269 #define FRAME_POINTER_REGNUM 153
1270
1271 /* Fake register that holds the address on the stack of the
1272 current function's return address. */
1273 #define RETURN_ADDRESS_POINTER_REGNUM RAP_REG
1274
1275 /* Register to hold the addressing base for position independent
1276 code access to data items. */
1277 #define PIC_OFFSET_TABLE_REGNUM (flag_pic ? PIC_REG : INVALID_REGNUM)
1278
1279 #define GOT_SYMBOL_NAME "*_GLOBAL_OFFSET_TABLE_"
1280
1281 /* Value should be nonzero if functions must have frame pointers.
1282 Zero means the frame pointer need not be set up (and parms may be accessed
1283 via the stack pointer) in functions that seem suitable. */
1284
1285 #define FRAME_POINTER_REQUIRED 0
1286
1287 /* Definitions for register eliminations.
1288
1289 We have three registers that can be eliminated on the SH. First, the
1290 frame pointer register can often be eliminated in favor of the stack
1291 pointer register. Secondly, the argument pointer register can always be
1292 eliminated; it is replaced with either the stack or frame pointer.
1293 Third, there is the return address pointer, which can also be replaced
1294 with either the stack or the frame pointer. */
1295
1296 /* This is an array of structures. Each structure initializes one pair
1297 of eliminable registers. The "from" register number is given first,
1298 followed by "to". Eliminations of the same "from" register are listed
1299 in order of preference. */
1300
1301 /* If you add any registers here that are not actually hard registers,
1302 and that have any alternative of elimination that doesn't always
1303 apply, you need to amend calc_live_regs to exclude it, because
1304 reload spills all eliminable registers where it sees an
1305 can_eliminate == 0 entry, thus making them 'live' .
1306 If you add any hard registers that can be eliminated in different
1307 ways, you have to patch reload to spill them only when all alternatives
1308 of elimination fail. */
1309
1310 #define ELIMINABLE_REGS \
1311 {{ HARD_FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
1312 { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
1313 { FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}, \
1314 { RETURN_ADDRESS_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
1315 { RETURN_ADDRESS_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}, \
1316 { ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
1317 { ARG_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM},}
1318
1319 /* Given FROM and TO register numbers, say whether this elimination
1320 is allowed. */
1321 #define CAN_ELIMINATE(FROM, TO) \
1322 (!((FROM) == HARD_FRAME_POINTER_REGNUM && FRAME_POINTER_REQUIRED))
1323
1324 /* Define the offset between two registers, one to be eliminated, and the other
1325 its replacement, at the start of a routine. */
1326
1327 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
1328 OFFSET = initial_elimination_offset ((FROM), (TO))
1329
1330 /* Base register for access to arguments of the function. */
1331 #define ARG_POINTER_REGNUM AP_REG
1332
1333 /* Register in which the static-chain is passed to a function. */
1334 #define STATIC_CHAIN_REGNUM (TARGET_SH5 ? 1 : 3)
1335
1336 /* Don't default to pcc-struct-return, because we have already specified
1337 exactly how to return structures in the TARGET_RETURN_IN_MEMORY
1338 target hook. */
1339
1340 #define DEFAULT_PCC_STRUCT_RETURN 0
1341
1342 #define SHMEDIA_REGS_STACK_ADJUST() \
1343 (TARGET_SHCOMPACT && current_function_has_nonlocal_label \
1344 ? (8 * (/* r28-r35 */ 8 + /* r44-r59 */ 16 + /* tr5-tr7 */ 3) \
1345 + (TARGET_FPU_ANY ? 4 * (/* fr36 - fr63 */ 28) : 0)) \
1346 : 0)
1347
1348 \f
1349 /* Define the classes of registers for register constraints in the
1350 machine description. Also define ranges of constants.
1351
1352 One of the classes must always be named ALL_REGS and include all hard regs.
1353 If there is more than one class, another class must be named NO_REGS
1354 and contain no registers.
1355
1356 The name GENERAL_REGS must be the name of a class (or an alias for
1357 another name such as ALL_REGS). This is the class of registers
1358 that is allowed by "g" or "r" in a register constraint.
1359 Also, registers outside this class are allocated only when
1360 instructions express preferences for them.
1361
1362 The classes must be numbered in nondecreasing order; that is,
1363 a larger-numbered class must never be contained completely
1364 in a smaller-numbered class.
1365
1366 For any two classes, it is very desirable that there be another
1367 class that represents their union. */
1368
1369 /* The SH has two sorts of general registers, R0 and the rest. R0 can
1370 be used as the destination of some of the arithmetic ops. There are
1371 also some special purpose registers; the T bit register, the
1372 Procedure Return Register and the Multiply Accumulate Registers. */
1373 /* Place GENERAL_REGS after FPUL_REGS so that it will be preferred by
1374 reg_class_subunion. We don't want to have an actual union class
1375 of these, because it would only be used when both classes are calculated
1376 to give the same cost, but there is only one FPUL register.
1377 Besides, regclass fails to notice the different REGISTER_MOVE_COSTS
1378 applying to the actual instruction alternative considered. E.g., the
1379 y/r alternative of movsi_ie is considered to have no more cost that
1380 the r/r alternative, which is patently untrue. */
1381
1382 enum reg_class
1383 {
1384 NO_REGS,
1385 R0_REGS,
1386 PR_REGS,
1387 T_REGS,
1388 MAC_REGS,
1389 FPUL_REGS,
1390 SIBCALL_REGS,
1391 GENERAL_REGS,
1392 FP0_REGS,
1393 FP_REGS,
1394 DF_HI_REGS,
1395 DF_REGS,
1396 FPSCR_REGS,
1397 GENERAL_FP_REGS,
1398 GENERAL_DF_REGS,
1399 TARGET_REGS,
1400 ALL_REGS,
1401 LIM_REG_CLASSES
1402 };
1403
1404 #define N_REG_CLASSES (int) LIM_REG_CLASSES
1405
1406 /* Give names of register classes as strings for dump file. */
1407 #define REG_CLASS_NAMES \
1408 { \
1409 "NO_REGS", \
1410 "R0_REGS", \
1411 "PR_REGS", \
1412 "T_REGS", \
1413 "MAC_REGS", \
1414 "FPUL_REGS", \
1415 "SIBCALL_REGS", \
1416 "GENERAL_REGS", \
1417 "FP0_REGS", \
1418 "FP_REGS", \
1419 "DF_HI_REGS", \
1420 "DF_REGS", \
1421 "FPSCR_REGS", \
1422 "GENERAL_FP_REGS", \
1423 "GENERAL_DF_REGS", \
1424 "TARGET_REGS", \
1425 "ALL_REGS", \
1426 }
1427
1428 /* Define which registers fit in which classes.
1429 This is an initializer for a vector of HARD_REG_SET
1430 of length N_REG_CLASSES. */
1431
1432 #define REG_CLASS_CONTENTS \
1433 { \
1434 /* NO_REGS: */ \
1435 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, \
1436 /* R0_REGS: */ \
1437 { 0x00000001, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, \
1438 /* PR_REGS: */ \
1439 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00040000 }, \
1440 /* T_REGS: */ \
1441 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00080000 }, \
1442 /* MAC_REGS: */ \
1443 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00300000 }, \
1444 /* FPUL_REGS: */ \
1445 { 0x00000000, 0x00000000, 0x00000000, 0x00000001, 0x00400000 }, \
1446 /* SIBCALL_REGS: Initialized in CONDITIONAL_REGISTER_USAGE. */ \
1447 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, \
1448 /* GENERAL_REGS: */ \
1449 { 0xffffffff, 0xffffffff, 0x00000000, 0x00000000, 0x03020000 }, \
1450 /* FP0_REGS: */ \
1451 { 0x00000000, 0x00000000, 0x00000001, 0x00000000, 0x00000000 }, \
1452 /* FP_REGS: */ \
1453 { 0x00000000, 0x00000000, 0xffffffff, 0xffffffff, 0x00000000 }, \
1454 /* DF_HI_REGS: Initialized in CONDITIONAL_REGISTER_USAGE. */ \
1455 { 0x00000000, 0x00000000, 0xffffffff, 0xffffffff, 0x0000ff00 }, \
1456 /* DF_REGS: */ \
1457 { 0x00000000, 0x00000000, 0xffffffff, 0xffffffff, 0x0000ff00 }, \
1458 /* FPSCR_REGS: */ \
1459 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00800000 }, \
1460 /* GENERAL_FP_REGS: */ \
1461 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0x03020000 }, \
1462 /* GENERAL_DF_REGS: */ \
1463 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0x0302ff00 }, \
1464 /* TARGET_REGS: */ \
1465 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x000000ff }, \
1466 /* ALL_REGS: */ \
1467 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0x03ffffff }, \
1468 }
1469
1470 /* The same information, inverted:
1471 Return the class number of the smallest class containing
1472 reg number REGNO. This could be a conditional expression
1473 or could index an array. */
1474
1475 extern enum reg_class regno_reg_class[FIRST_PSEUDO_REGISTER];
1476 #define REGNO_REG_CLASS(REGNO) regno_reg_class[(REGNO)]
1477
1478 /* When defined, the compiler allows registers explicitly used in the
1479 rtl to be used as spill registers but prevents the compiler from
1480 extending the lifetime of these registers. */
1481
1482 #define SMALL_REGISTER_CLASSES (! TARGET_SHMEDIA)
1483
1484 /* The order in which register should be allocated. */
1485 /* Sometimes FP0_REGS becomes the preferred class of a floating point pseudo,
1486 and GENERAL_FP_REGS the alternate class. Since FP0 is likely to be
1487 spilled or used otherwise, we better have the FP_REGS allocated first. */
1488 #define REG_ALLOC_ORDER \
1489 {/* Caller-saved FPRs */ \
1490 65, 66, 67, 68, 69, 70, 71, 64, \
1491 72, 73, 74, 75, 80, 81, 82, 83, \
1492 84, 85, 86, 87, 88, 89, 90, 91, \
1493 92, 93, 94, 95, 96, 97, 98, 99, \
1494 /* Callee-saved FPRs */ \
1495 76, 77, 78, 79,100,101,102,103, \
1496 104,105,106,107,108,109,110,111, \
1497 112,113,114,115,116,117,118,119, \
1498 120,121,122,123,124,125,126,127, \
1499 136,137,138,139,140,141,142,143, \
1500 /* FPSCR */ 151, \
1501 /* Caller-saved GPRs (except 8/9 on SH1-4) */ \
1502 1, 2, 3, 7, 6, 5, 4, 0, \
1503 8, 9, 17, 19, 20, 21, 22, 23, \
1504 36, 37, 38, 39, 40, 41, 42, 43, \
1505 60, 61, 62, \
1506 /* SH1-4 callee-saved saved GPRs / SH5 partially-saved GPRs */ \
1507 10, 11, 12, 13, 14, 18, \
1508 /* SH5 callee-saved GPRs */ \
1509 28, 29, 30, 31, 32, 33, 34, 35, \
1510 44, 45, 46, 47, 48, 49, 50, 51, \
1511 52, 53, 54, 55, 56, 57, 58, 59, \
1512 /* FPUL */ 150, \
1513 /* SH5 branch target registers */ \
1514 128,129,130,131,132,133,134,135, \
1515 /* Fixed registers */ \
1516 15, 16, 24, 25, 26, 27, 63,144, \
1517 145,146,147,148,149,152,153 }
1518
1519 /* The class value for index registers, and the one for base regs. */
1520 #define INDEX_REG_CLASS \
1521 (!ALLOW_INDEXED_ADDRESS ? NO_REGS : TARGET_SHMEDIA ? GENERAL_REGS : R0_REGS)
1522 #define BASE_REG_CLASS GENERAL_REGS
1523
1524 /* Get reg_class from a letter such as appears in the machine
1525 description. */
1526 extern enum reg_class reg_class_from_letter[];
1527
1528 /* We might use 'Rxx' constraints in the future for exotic reg classes.*/
1529 #define REG_CLASS_FROM_CONSTRAINT(C, STR) \
1530 (ISLOWER (C) ? reg_class_from_letter[(C)-'a'] : NO_REGS )
1531 \f
1532 /* Overview of uppercase letter constraints:
1533 A: Addresses (constraint len == 3)
1534 Ac4: sh4 cache operations
1535 Ac5: sh5 cache operations
1536 Bxx: miscellaneous constraints
1537 Bsc: SCRATCH - for the scratch register in movsi_ie in the
1538 fldi0 / fldi0 cases
1539 C: Constants other than only CONST_INT (constraint len == 3)
1540 Css: signed 16 bit constant, literal or symbolic
1541 Csu: unsigned 16 bit constant, literal or symbolic
1542 Csy: label or symbol
1543 Cpg: non-explicit constants that can be directly loaded into a general
1544 purpose register in PIC code. like 's' except we don't allow
1545 PIC_DIRECT_ADDR_P
1546 IJKLMNOP: CONT_INT constants
1547 Ixx: signed xx bit
1548 J16: 0xffffffff00000000 | 0x00000000ffffffff
1549 Kxx: unsigned xx bit
1550 M: 1
1551 N: 0
1552 P27: 1 | 2 | 8 | 16
1553 Q: pc relative load operand
1554 Rxx: reserved for exotic register classes.
1555 S: extra memory (storage) constraints (constraint len == 3)
1556 Sua: unaligned memory operations
1557 W: vector
1558 Z: zero in any mode
1559
1560 unused CONST_INT constraint letters: LO
1561 unused EXTRA_CONSTRAINT letters: D T U Y */
1562
1563 #define CONSTRAINT_LEN(C,STR) \
1564 (((C) == 'A' || (C) == 'B' || (C) == 'C' \
1565 || (C) == 'I' || (C) == 'J' || (C) == 'K' || (C) == 'P' \
1566 || (C) == 'R' || (C) == 'S') \
1567 ? 3 : DEFAULT_CONSTRAINT_LEN ((C), (STR)))
1568
1569 /* The letters I, J, K, L and M in a register constraint string
1570 can be used to stand for particular ranges of immediate operands.
1571 This macro defines what the ranges are.
1572 C is the letter, and VALUE is a constant value.
1573 Return 1 if VALUE is in the range specified by C.
1574 I08: arithmetic operand -127..128, as used in add, sub, etc
1575 I16: arithmetic operand -32768..32767, as used in SHmedia movi
1576 K16: arithmetic operand 0..65535, as used in SHmedia shori
1577 P27: shift operand 1,2,8 or 16
1578 K08: logical operand 0..255, as used in and, or, etc.
1579 M: constant 1
1580 N: constant 0
1581 I06: arithmetic operand -32..31, as used in SHmedia beqi, bnei and xori
1582 I10: arithmetic operand -512..511, as used in SHmedia andi, ori
1583 */
1584
1585 #define CONST_OK_FOR_I06(VALUE) (((HOST_WIDE_INT)(VALUE)) >= -32 \
1586 && ((HOST_WIDE_INT)(VALUE)) <= 31)
1587 #define CONST_OK_FOR_I08(VALUE) (((HOST_WIDE_INT)(VALUE))>= -128 \
1588 && ((HOST_WIDE_INT)(VALUE)) <= 127)
1589 #define CONST_OK_FOR_I10(VALUE) (((HOST_WIDE_INT)(VALUE)) >= -512 \
1590 && ((HOST_WIDE_INT)(VALUE)) <= 511)
1591 #define CONST_OK_FOR_I16(VALUE) (((HOST_WIDE_INT)(VALUE)) >= -32768 \
1592 && ((HOST_WIDE_INT)(VALUE)) <= 32767)
1593 #define CONST_OK_FOR_I20(VALUE) (((HOST_WIDE_INT)(VALUE)) >= -524288 \
1594 && ((HOST_WIDE_INT)(VALUE)) <= 524287 \
1595 && TARGET_SH2A)
1596 #define CONST_OK_FOR_I(VALUE, STR) \
1597 ((STR)[1] == '0' && (STR)[2] == '6' ? CONST_OK_FOR_I06 (VALUE) \
1598 : (STR)[1] == '0' && (STR)[2] == '8' ? CONST_OK_FOR_I08 (VALUE) \
1599 : (STR)[1] == '1' && (STR)[2] == '0' ? CONST_OK_FOR_I10 (VALUE) \
1600 : (STR)[1] == '1' && (STR)[2] == '6' ? CONST_OK_FOR_I16 (VALUE) \
1601 : (STR)[1] == '2' && (STR)[2] == '0' ? CONST_OK_FOR_I20 (VALUE) \
1602 : 0)
1603
1604 #define CONST_OK_FOR_J16(VALUE) \
1605 ((HOST_BITS_PER_WIDE_INT >= 64 && (VALUE) == (HOST_WIDE_INT) 0xffffffff) \
1606 || (HOST_BITS_PER_WIDE_INT >= 64 && (VALUE) == (HOST_WIDE_INT) -1 << 32))
1607 #define CONST_OK_FOR_J(VALUE, STR) \
1608 ((STR)[1] == '1' && (STR)[2] == '6' ? CONST_OK_FOR_J16 (VALUE) \
1609 : 0)
1610
1611 #define CONST_OK_FOR_K08(VALUE) (((HOST_WIDE_INT)(VALUE))>= 0 \
1612 && ((HOST_WIDE_INT)(VALUE)) <= 255)
1613 #define CONST_OK_FOR_K16(VALUE) (((HOST_WIDE_INT)(VALUE))>= 0 \
1614 && ((HOST_WIDE_INT)(VALUE)) <= 65535)
1615 #define CONST_OK_FOR_K(VALUE, STR) \
1616 ((STR)[1] == '0' && (STR)[2] == '8' ? CONST_OK_FOR_K08 (VALUE) \
1617 : (STR)[1] == '1' && (STR)[2] == '6' ? CONST_OK_FOR_K16 (VALUE) \
1618 : 0)
1619 #define CONST_OK_FOR_P27(VALUE) \
1620 ((VALUE)==1||(VALUE)==2||(VALUE)==8||(VALUE)==16)
1621 #define CONST_OK_FOR_P(VALUE, STR) \
1622 ((STR)[1] == '2' && (STR)[2] == '7' ? CONST_OK_FOR_P27 (VALUE) \
1623 : 0)
1624 #define CONST_OK_FOR_M(VALUE) ((VALUE)==1)
1625 #define CONST_OK_FOR_N(VALUE) ((VALUE)==0)
1626 #define CONST_OK_FOR_CONSTRAINT_P(VALUE, C, STR) \
1627 ((C) == 'I' ? CONST_OK_FOR_I ((VALUE), (STR)) \
1628 : (C) == 'J' ? CONST_OK_FOR_J ((VALUE), (STR)) \
1629 : (C) == 'K' ? CONST_OK_FOR_K ((VALUE), (STR)) \
1630 : (C) == 'M' ? CONST_OK_FOR_M (VALUE) \
1631 : (C) == 'N' ? CONST_OK_FOR_N (VALUE) \
1632 : (C) == 'P' ? CONST_OK_FOR_P ((VALUE), (STR)) \
1633 : 0)
1634
1635 /* Similar, but for floating constants, and defining letters G and H.
1636 Here VALUE is the CONST_DOUBLE rtx itself. */
1637
1638 #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
1639 ((C) == 'G' ? (fp_zero_operand (VALUE) && fldi_ok ()) \
1640 : (C) == 'H' ? (fp_one_operand (VALUE) && fldi_ok ()) \
1641 : (C) == 'F')
1642
1643 /* Given an rtx X being reloaded into a reg required to be
1644 in class CLASS, return the class of reg to actually use.
1645 In general this is just CLASS; but on some machines
1646 in some cases it is preferable to use a more restrictive class. */
1647
1648 #define PREFERRED_RELOAD_CLASS(X, CLASS) \
1649 ((CLASS) == NO_REGS && TARGET_SHMEDIA \
1650 && (GET_CODE (X) == CONST_DOUBLE \
1651 || GET_CODE (X) == SYMBOL_REF \
1652 || PIC_DIRECT_ADDR_P (X)) \
1653 ? GENERAL_REGS \
1654 : (CLASS)) \
1655
1656 #if 0
1657 #define SECONDARY_INOUT_RELOAD_CLASS(CLASS,MODE,X,ELSE) \
1658 ((((REGCLASS_HAS_FP_REG (CLASS) \
1659 && (GET_CODE (X) == REG \
1660 && (GENERAL_OR_AP_REGISTER_P (REGNO (X)) \
1661 || (FP_REGISTER_P (REGNO (X)) && (MODE) == SImode \
1662 && TARGET_FMOVD)))) \
1663 || (REGCLASS_HAS_GENERAL_REG (CLASS) \
1664 && GET_CODE (X) == REG \
1665 && FP_REGISTER_P (REGNO (X)))) \
1666 && ! TARGET_SHMEDIA \
1667 && ((MODE) == SFmode || (MODE) == SImode)) \
1668 ? FPUL_REGS \
1669 : (((CLASS) == FPUL_REGS \
1670 || (REGCLASS_HAS_FP_REG (CLASS) \
1671 && ! TARGET_SHMEDIA && MODE == SImode)) \
1672 && (GET_CODE (X) == MEM \
1673 || (GET_CODE (X) == REG \
1674 && (REGNO (X) >= FIRST_PSEUDO_REGISTER \
1675 || REGNO (X) == T_REG \
1676 || system_reg_operand (X, VOIDmode))))) \
1677 ? GENERAL_REGS \
1678 : (((CLASS) == TARGET_REGS \
1679 || (TARGET_SHMEDIA && (CLASS) == SIBCALL_REGS)) \
1680 && !EXTRA_CONSTRAINT_Csy (X) \
1681 && (GET_CODE (X) != REG || ! GENERAL_REGISTER_P (REGNO (X)))) \
1682 ? GENERAL_REGS \
1683 : (((CLASS) == MAC_REGS || (CLASS) == PR_REGS) \
1684 && GET_CODE (X) == REG && ! GENERAL_REGISTER_P (REGNO (X)) \
1685 && (CLASS) != REGNO_REG_CLASS (REGNO (X))) \
1686 ? GENERAL_REGS \
1687 : ((CLASS) != GENERAL_REGS && GET_CODE (X) == REG \
1688 && TARGET_REGISTER_P (REGNO (X))) \
1689 ? GENERAL_REGS : (ELSE))
1690
1691 #define SECONDARY_OUTPUT_RELOAD_CLASS(CLASS,MODE,X) \
1692 SECONDARY_INOUT_RELOAD_CLASS(CLASS,MODE,X,NO_REGS)
1693
1694 #define SECONDARY_INPUT_RELOAD_CLASS(CLASS,MODE,X) \
1695 ((REGCLASS_HAS_FP_REG (CLASS) \
1696 && ! TARGET_SHMEDIA \
1697 && immediate_operand ((X), (MODE)) \
1698 && ! ((fp_zero_operand (X) || fp_one_operand (X)) \
1699 && (MODE) == SFmode && fldi_ok ())) \
1700 ? R0_REGS \
1701 : ((CLASS) == FPUL_REGS \
1702 && ((GET_CODE (X) == REG \
1703 && (REGNO (X) == MACL_REG || REGNO (X) == MACH_REG \
1704 || REGNO (X) == T_REG)) \
1705 || GET_CODE (X) == PLUS)) \
1706 ? GENERAL_REGS \
1707 : (CLASS) == FPUL_REGS && immediate_operand ((X), (MODE)) \
1708 ? (GET_CODE (X) == CONST_INT && CONST_OK_FOR_I08 (INTVAL (X)) \
1709 ? GENERAL_REGS \
1710 : R0_REGS) \
1711 : ((CLASS) == FPSCR_REGS \
1712 && ((GET_CODE (X) == REG && REGNO (X) >= FIRST_PSEUDO_REGISTER) \
1713 || (GET_CODE (X) == MEM && GET_CODE (XEXP ((X), 0)) == PLUS)))\
1714 ? GENERAL_REGS \
1715 : (REGCLASS_HAS_FP_REG (CLASS) \
1716 && TARGET_SHMEDIA \
1717 && immediate_operand ((X), (MODE)) \
1718 && (X) != CONST0_RTX (GET_MODE (X)) \
1719 && GET_MODE (X) != V4SFmode) \
1720 ? GENERAL_REGS \
1721 : (((MODE) == QImode || (MODE) == HImode) \
1722 && TARGET_SHMEDIA && inqhi_operand ((X), (MODE))) \
1723 ? GENERAL_REGS \
1724 : (TARGET_SHMEDIA && (CLASS) == GENERAL_REGS \
1725 && (GET_CODE (X) == LABEL_REF || PIC_DIRECT_ADDR_P (X))) \
1726 ? TARGET_REGS \
1727 : SECONDARY_INOUT_RELOAD_CLASS((CLASS),(MODE),(X), NO_REGS))
1728 #else
1729 #define HAVE_SECONDARY_RELOADS
1730 #endif
1731
1732 /* Return the maximum number of consecutive registers
1733 needed to represent mode MODE in a register of class CLASS.
1734
1735 If TARGET_SHMEDIA, we need two FP registers per word.
1736 Otherwise we will need at most one register per word. */
1737 #define CLASS_MAX_NREGS(CLASS, MODE) \
1738 (TARGET_SHMEDIA \
1739 && TEST_HARD_REG_BIT (reg_class_contents[CLASS], FIRST_FP_REG) \
1740 ? (GET_MODE_SIZE (MODE) + UNITS_PER_WORD/2 - 1) / (UNITS_PER_WORD/2) \
1741 : (GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
1742
1743 /* If defined, gives a class of registers that cannot be used as the
1744 operand of a SUBREG that changes the mode of the object illegally. */
1745 /* ??? We need to renumber the internal numbers for the frnn registers
1746 when in little endian in order to allow mode size changes. */
1747
1748 #define CANNOT_CHANGE_MODE_CLASS(FROM, TO, CLASS) \
1749 sh_cannot_change_mode_class (FROM, TO, CLASS)
1750 \f
1751 /* Stack layout; function entry, exit and calling. */
1752
1753 /* Define the number of registers that can hold parameters.
1754 These macros are used only in other macro definitions below. */
1755
1756 #define NPARM_REGS(MODE) \
1757 (TARGET_FPU_ANY && (MODE) == SFmode \
1758 ? (TARGET_SH5 ? 12 : 8) \
1759 : (TARGET_SH4 || TARGET_SH2A_DOUBLE) && (GET_MODE_CLASS (MODE) == MODE_FLOAT \
1760 || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) \
1761 ? (TARGET_SH5 ? 12 : 8) \
1762 : (TARGET_SH5 ? 8 : 4))
1763
1764 #define FIRST_PARM_REG (FIRST_GENERAL_REG + (TARGET_SH5 ? 2 : 4))
1765 #define FIRST_RET_REG (FIRST_GENERAL_REG + (TARGET_SH5 ? 2 : 0))
1766
1767 #define FIRST_FP_PARM_REG (FIRST_FP_REG + (TARGET_SH5 ? 0 : 4))
1768 #define FIRST_FP_RET_REG FIRST_FP_REG
1769
1770 /* Define this if pushing a word on the stack
1771 makes the stack pointer a smaller address. */
1772 #define STACK_GROWS_DOWNWARD
1773
1774 /* Define this macro to nonzero if the addresses of local variable slots
1775 are at negative offsets from the frame pointer. */
1776 #define FRAME_GROWS_DOWNWARD 1
1777
1778 /* Offset from the frame pointer to the first local variable slot to
1779 be allocated. */
1780 #define STARTING_FRAME_OFFSET 0
1781
1782 /* If we generate an insn to push BYTES bytes,
1783 this says how many the stack pointer really advances by. */
1784 /* Don't define PUSH_ROUNDING, since the hardware doesn't do this.
1785 When PUSH_ROUNDING is not defined, PARM_BOUNDARY will cause gcc to
1786 do correct alignment. */
1787 #if 0
1788 #define PUSH_ROUNDING(NPUSHED) (((NPUSHED) + 3) & ~3)
1789 #endif
1790
1791 /* Offset of first parameter from the argument pointer register value. */
1792 #define FIRST_PARM_OFFSET(FNDECL) 0
1793
1794 /* Value is the number of byte of arguments automatically
1795 popped when returning from a subroutine call.
1796 FUNDECL is the declaration node of the function (as a tree),
1797 FUNTYPE is the data type of the function (as a tree),
1798 or for a library call it is an identifier node for the subroutine name.
1799 SIZE is the number of bytes of arguments passed on the stack.
1800
1801 On the SH, the caller does not pop any of its arguments that were passed
1802 on the stack. */
1803 #define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE) 0
1804
1805 /* Value is the number of bytes of arguments automatically popped when
1806 calling a subroutine.
1807 CUM is the accumulated argument list.
1808
1809 On SHcompact, the call trampoline pops arguments off the stack. */
1810 #define CALL_POPS_ARGS(CUM) (TARGET_SHCOMPACT ? (CUM).stack_regs * 8 : 0)
1811
1812 /* Some subroutine macros specific to this machine. */
1813
1814 #define BASE_RETURN_VALUE_REG(MODE) \
1815 ((TARGET_FPU_ANY && ((MODE) == SFmode)) \
1816 ? FIRST_FP_RET_REG \
1817 : TARGET_FPU_ANY && (MODE) == SCmode \
1818 ? FIRST_FP_RET_REG \
1819 : (TARGET_FPU_DOUBLE \
1820 && ((MODE) == DFmode || (MODE) == SFmode \
1821 || (MODE) == DCmode || (MODE) == SCmode )) \
1822 ? FIRST_FP_RET_REG \
1823 : FIRST_RET_REG)
1824
1825 #define BASE_ARG_REG(MODE) \
1826 ((TARGET_SH2E && ((MODE) == SFmode)) \
1827 ? FIRST_FP_PARM_REG \
1828 : (TARGET_SH4 || TARGET_SH2A_DOUBLE) && (GET_MODE_CLASS (MODE) == MODE_FLOAT \
1829 || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT)\
1830 ? FIRST_FP_PARM_REG \
1831 : FIRST_PARM_REG)
1832
1833 /* Define how to find the value returned by a function.
1834 VALTYPE is the data type of the value (as a tree).
1835 If the precise function being called is known, FUNC is its FUNCTION_DECL;
1836 otherwise, FUNC is 0.
1837 For the SH, this is like LIBCALL_VALUE, except that we must change the
1838 mode like PROMOTE_MODE does.
1839 ??? PROMOTE_MODE is ignored for non-scalar types. The set of types
1840 tested here has to be kept in sync with the one in explow.c:promote_mode. */
1841
1842 #define FUNCTION_VALUE(VALTYPE, FUNC) \
1843 gen_rtx_REG ( \
1844 ((GET_MODE_CLASS (TYPE_MODE (VALTYPE)) == MODE_INT \
1845 && GET_MODE_SIZE (TYPE_MODE (VALTYPE)) < 4 \
1846 && (TREE_CODE (VALTYPE) == INTEGER_TYPE \
1847 || TREE_CODE (VALTYPE) == ENUMERAL_TYPE \
1848 || TREE_CODE (VALTYPE) == BOOLEAN_TYPE \
1849 || TREE_CODE (VALTYPE) == REAL_TYPE \
1850 || TREE_CODE (VALTYPE) == OFFSET_TYPE)) \
1851 && sh_promote_prototypes (VALTYPE) \
1852 ? (TARGET_SHMEDIA64 ? DImode : SImode) : TYPE_MODE (VALTYPE)), \
1853 BASE_RETURN_VALUE_REG (TYPE_MODE (VALTYPE)))
1854
1855 /* Define how to find the value returned by a library function
1856 assuming the value has mode MODE. */
1857 #define LIBCALL_VALUE(MODE) \
1858 gen_rtx_REG ((MODE), BASE_RETURN_VALUE_REG (MODE));
1859
1860 /* 1 if N is a possible register number for a function value. */
1861 #define FUNCTION_VALUE_REGNO_P(REGNO) \
1862 ((REGNO) == FIRST_RET_REG || (TARGET_SH2E && (REGNO) == FIRST_FP_RET_REG) \
1863 || (TARGET_SHMEDIA_FPU && (REGNO) == FIRST_FP_RET_REG))
1864
1865 /* 1 if N is a possible register number for function argument passing. */
1866 /* ??? There are some callers that pass REGNO as int, and others that pass
1867 it as unsigned. We get warnings unless we do casts everywhere. */
1868 #define FUNCTION_ARG_REGNO_P(REGNO) \
1869 (((unsigned) (REGNO) >= (unsigned) FIRST_PARM_REG \
1870 && (unsigned) (REGNO) < (unsigned) (FIRST_PARM_REG + NPARM_REGS (SImode)))\
1871 || (TARGET_FPU_ANY \
1872 && (unsigned) (REGNO) >= (unsigned) FIRST_FP_PARM_REG \
1873 && (unsigned) (REGNO) < (unsigned) (FIRST_FP_PARM_REG \
1874 + NPARM_REGS (SFmode))))
1875 \f
1876 /* Define a data type for recording info about an argument list
1877 during the scan of that argument list. This data type should
1878 hold all necessary information about the function itself
1879 and about the args processed so far, enough to enable macros
1880 such as FUNCTION_ARG to determine where the next arg should go.
1881
1882 On SH, this is a single integer, which is a number of words
1883 of arguments scanned so far (including the invisible argument,
1884 if any, which holds the structure-value-address).
1885 Thus NARGREGS or more means all following args should go on the stack. */
1886
1887 enum sh_arg_class { SH_ARG_INT = 0, SH_ARG_FLOAT = 1 };
1888 struct sh_args {
1889 int arg_count[2];
1890 int force_mem;
1891 /* Nonzero if a prototype is available for the function. */
1892 int prototype_p;
1893 /* The number of an odd floating-point register, that should be used
1894 for the next argument of type float. */
1895 int free_single_fp_reg;
1896 /* Whether we're processing an outgoing function call. */
1897 int outgoing;
1898 /* The number of general-purpose registers that should have been
1899 used to pass partial arguments, that are passed totally on the
1900 stack. On SHcompact, a call trampoline will pop them off the
1901 stack before calling the actual function, and, if the called
1902 function is implemented in SHcompact mode, the incoming arguments
1903 decoder will push such arguments back onto the stack. For
1904 incoming arguments, STACK_REGS also takes into account other
1905 arguments passed by reference, that the decoder will also push
1906 onto the stack. */
1907 int stack_regs;
1908 /* The number of general-purpose registers that should have been
1909 used to pass arguments, if the arguments didn't have to be passed
1910 by reference. */
1911 int byref_regs;
1912 /* Set as by shcompact_byref if the current argument is to be passed
1913 by reference. */
1914 int byref;
1915
1916 /* call_cookie is a bitmask used by call expanders, as well as
1917 function prologue and epilogues, to allow SHcompact to comply
1918 with the SH5 32-bit ABI, that requires 64-bit registers to be
1919 used even though only the lower 32-bit half is visible in
1920 SHcompact mode. The strategy is to call SHmedia trampolines.
1921
1922 The alternatives for each of the argument-passing registers are
1923 (a) leave it unchanged; (b) pop it off the stack; (c) load its
1924 contents from the address in it; (d) add 8 to it, storing the
1925 result in the next register, then (c); (e) copy it from some
1926 floating-point register,
1927
1928 Regarding copies from floating-point registers, r2 may only be
1929 copied from dr0. r3 may be copied from dr0 or dr2. r4 maybe
1930 copied from dr0, dr2 or dr4. r5 maybe copied from dr0, dr2,
1931 dr4 or dr6. r6 may be copied from dr0, dr2, dr4, dr6 or dr8.
1932 r7 through to r9 may be copied from dr0, dr2, dr4, dr8, dr8 or
1933 dr10.
1934
1935 The bit mask is structured as follows:
1936
1937 - 1 bit to tell whether to set up a return trampoline.
1938
1939 - 3 bits to count the number consecutive registers to pop off the
1940 stack.
1941
1942 - 4 bits for each of r9, r8, r7 and r6.
1943
1944 - 3 bits for each of r5, r4, r3 and r2.
1945
1946 - 3 bits set to 0 (the most significant ones)
1947
1948 3 2 1 0
1949 1098 7654 3210 9876 5432 1098 7654 3210
1950 FLPF LPFL PFLP FFLP FFLP FFLP FFLP SSST
1951 2223 3344 4555 6666 7777 8888 9999 SSS-
1952
1953 - If F is set, the register must be copied from an FP register,
1954 whose number is encoded in the remaining bits.
1955
1956 - Else, if L is set, the register must be loaded from the address
1957 contained in it. If the P bit is *not* set, the address of the
1958 following dword should be computed first, and stored in the
1959 following register.
1960
1961 - Else, if P is set, the register alone should be popped off the
1962 stack.
1963
1964 - After all this processing, the number of registers represented
1965 in SSS will be popped off the stack. This is an optimization
1966 for pushing/popping consecutive registers, typically used for
1967 varargs and large arguments partially passed in registers.
1968
1969 - If T is set, a return trampoline will be set up for 64-bit
1970 return values to be split into 2 32-bit registers. */
1971 #define CALL_COOKIE_RET_TRAMP_SHIFT 0
1972 #define CALL_COOKIE_RET_TRAMP(VAL) ((VAL) << CALL_COOKIE_RET_TRAMP_SHIFT)
1973 #define CALL_COOKIE_STACKSEQ_SHIFT 1
1974 #define CALL_COOKIE_STACKSEQ(VAL) ((VAL) << CALL_COOKIE_STACKSEQ_SHIFT)
1975 #define CALL_COOKIE_STACKSEQ_GET(COOKIE) \
1976 (((COOKIE) >> CALL_COOKIE_STACKSEQ_SHIFT) & 7)
1977 #define CALL_COOKIE_INT_REG_SHIFT(REG) \
1978 (4 * (7 - (REG)) + (((REG) <= 2) ? ((REG) - 2) : 1) + 3)
1979 #define CALL_COOKIE_INT_REG(REG, VAL) \
1980 ((VAL) << CALL_COOKIE_INT_REG_SHIFT (REG))
1981 #define CALL_COOKIE_INT_REG_GET(COOKIE, REG) \
1982 (((COOKIE) >> CALL_COOKIE_INT_REG_SHIFT (REG)) & ((REG) < 4 ? 7 : 15))
1983 long call_cookie;
1984
1985 /* This is set to nonzero when the call in question must use the Renesas ABI,
1986 even without the -mrenesas option. */
1987 int renesas_abi;
1988 };
1989
1990 #define CUMULATIVE_ARGS struct sh_args
1991
1992 #define GET_SH_ARG_CLASS(MODE) \
1993 ((TARGET_FPU_ANY && (MODE) == SFmode) \
1994 ? SH_ARG_FLOAT \
1995 /* There's no mention of complex float types in the SH5 ABI, so we
1996 should presumably handle them as aggregate types. */ \
1997 : TARGET_SH5 && GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT \
1998 ? SH_ARG_INT \
1999 : TARGET_FPU_DOUBLE && (GET_MODE_CLASS (MODE) == MODE_FLOAT \
2000 || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) \
2001 ? SH_ARG_FLOAT : SH_ARG_INT)
2002
2003 #define ROUND_ADVANCE(SIZE) \
2004 (((SIZE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
2005
2006 /* Round a register number up to a proper boundary for an arg of mode
2007 MODE.
2008
2009 The SH doesn't care about double alignment, so we only
2010 round doubles to even regs when asked to explicitly. */
2011
2012 #define ROUND_REG(CUM, MODE) \
2013 (((TARGET_ALIGN_DOUBLE \
2014 || ((TARGET_SH4 || TARGET_SH2A_DOUBLE) && ((MODE) == DFmode || (MODE) == DCmode) \
2015 && (CUM).arg_count[(int) SH_ARG_FLOAT] < NPARM_REGS (MODE)))\
2016 && GET_MODE_UNIT_SIZE ((MODE)) > UNITS_PER_WORD) \
2017 ? ((CUM).arg_count[(int) GET_SH_ARG_CLASS (MODE)] \
2018 + ((CUM).arg_count[(int) GET_SH_ARG_CLASS (MODE)] & 1)) \
2019 : (CUM).arg_count[(int) GET_SH_ARG_CLASS (MODE)])
2020
2021 /* Initialize a variable CUM of type CUMULATIVE_ARGS
2022 for a call to a function whose data type is FNTYPE.
2023 For a library call, FNTYPE is 0.
2024
2025 On SH, the offset always starts at 0: the first parm reg is always
2026 the same reg for a given argument class.
2027
2028 For TARGET_HITACHI, the structure value pointer is passed in memory. */
2029
2030 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \
2031 sh_init_cumulative_args (& (CUM), (FNTYPE), (LIBNAME), (FNDECL), (N_NAMED_ARGS), VOIDmode)
2032
2033 #define INIT_CUMULATIVE_LIBCALL_ARGS(CUM, MODE, LIBNAME) \
2034 sh_init_cumulative_args (& (CUM), NULL_TREE, (LIBNAME), NULL_TREE, 0, (MODE))
2035
2036 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
2037 sh_function_arg_advance (&(CUM), (MODE), (TYPE), (NAMED))
2038 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
2039 sh_function_arg (&(CUM), (MODE), (TYPE), (NAMED))
2040
2041 /* Return boolean indicating arg of mode MODE will be passed in a reg.
2042 This macro is only used in this file. */
2043
2044 #define PASS_IN_REG_P(CUM, MODE, TYPE) \
2045 (((TYPE) == 0 \
2046 || (! TREE_ADDRESSABLE ((tree)(TYPE)) \
2047 && (! (TARGET_HITACHI || (CUM).renesas_abi) \
2048 || ! (AGGREGATE_TYPE_P (TYPE) \
2049 || (!TARGET_FPU_ANY \
2050 && (GET_MODE_CLASS (MODE) == MODE_FLOAT \
2051 && GET_MODE_SIZE (MODE) > GET_MODE_SIZE (SFmode))))))) \
2052 && ! (CUM).force_mem \
2053 && (TARGET_SH2E \
2054 ? ((MODE) == BLKmode \
2055 ? (((CUM).arg_count[(int) SH_ARG_INT] * UNITS_PER_WORD \
2056 + int_size_in_bytes (TYPE)) \
2057 <= NPARM_REGS (SImode) * UNITS_PER_WORD) \
2058 : ((ROUND_REG((CUM), (MODE)) \
2059 + HARD_REGNO_NREGS (BASE_ARG_REG (MODE), (MODE))) \
2060 <= NPARM_REGS (MODE))) \
2061 : ROUND_REG ((CUM), (MODE)) < NPARM_REGS (MODE)))
2062
2063 /* By accident we got stuck with passing SCmode on SH4 little endian
2064 in two registers that are nominally successive - which is different from
2065 two single SFmode values, where we take endianness translation into
2066 account. That does not work at all if an odd number of registers is
2067 already in use, so that got fixed, but library functions are still more
2068 likely to use complex numbers without mixing them with SFmode arguments
2069 (which in C would have to be structures), so for the sake of ABI
2070 compatibility the way SCmode values are passed when an even number of
2071 FP registers is in use remains different from a pair of SFmode values for
2072 now.
2073 I.e.:
2074 foo (double); a: fr5,fr4
2075 foo (float a, float b); a: fr5 b: fr4
2076 foo (__complex float a); a.real fr4 a.imag: fr5 - for consistency,
2077 this should be the other way round...
2078 foo (float a, __complex float b); a: fr5 b.real: fr4 b.imag: fr7 */
2079 #define FUNCTION_ARG_SCmode_WART 1
2080
2081 /* If an argument of size 5, 6 or 7 bytes is to be passed in a 64-bit
2082 register in SHcompact mode, it must be padded in the most
2083 significant end. This means that passing it by reference wouldn't
2084 pad properly on a big-endian machine. In this particular case, we
2085 pass this argument on the stack, in a way that the call trampoline
2086 will load its value into the appropriate register. */
2087 #define SHCOMPACT_FORCE_ON_STACK(MODE,TYPE) \
2088 ((MODE) == BLKmode \
2089 && TARGET_SHCOMPACT \
2090 && ! TARGET_LITTLE_ENDIAN \
2091 && int_size_in_bytes (TYPE) > 4 \
2092 && int_size_in_bytes (TYPE) < 8)
2093
2094 /* Minimum alignment for an argument to be passed by callee-copy
2095 reference. We need such arguments to be aligned to 8 byte
2096 boundaries, because they'll be loaded using quad loads. */
2097 #define SH_MIN_ALIGN_FOR_CALLEE_COPY (8 * BITS_PER_UNIT)
2098
2099 /* The SH5 ABI requires floating-point arguments to be passed to
2100 functions without a prototype in both an FP register and a regular
2101 register or the stack. When passing the argument in both FP and
2102 general-purpose registers, list the FP register first. */
2103 #define SH5_PROTOTYPELESS_FLOAT_ARG(CUM,MODE) \
2104 (gen_rtx_PARALLEL \
2105 ((MODE), \
2106 gen_rtvec (2, \
2107 gen_rtx_EXPR_LIST \
2108 (VOIDmode, \
2109 ((CUM).arg_count[(int) SH_ARG_INT] < NPARM_REGS (SImode) \
2110 ? gen_rtx_REG ((MODE), FIRST_FP_PARM_REG \
2111 + (CUM).arg_count[(int) SH_ARG_FLOAT]) \
2112 : NULL_RTX), \
2113 const0_rtx), \
2114 gen_rtx_EXPR_LIST \
2115 (VOIDmode, \
2116 ((CUM).arg_count[(int) SH_ARG_INT] < NPARM_REGS (SImode) \
2117 ? gen_rtx_REG ((MODE), FIRST_PARM_REG \
2118 + (CUM).arg_count[(int) SH_ARG_INT]) \
2119 : gen_rtx_REG ((MODE), FIRST_FP_PARM_REG \
2120 + (CUM).arg_count[(int) SH_ARG_FLOAT])), \
2121 const0_rtx))))
2122
2123 /* The SH5 ABI requires regular registers or stack slots to be
2124 reserved for floating-point arguments. Registers are taken care of
2125 in FUNCTION_ARG_ADVANCE, but stack slots must be reserved here.
2126 Unfortunately, there's no way to just reserve a stack slot, so
2127 we'll end up needlessly storing a copy of the argument in the
2128 stack. For incoming arguments, however, the PARALLEL will be
2129 optimized to the register-only form, and the value in the stack
2130 slot won't be used at all. */
2131 #define SH5_PROTOTYPED_FLOAT_ARG(CUM,MODE,REG) \
2132 ((CUM).arg_count[(int) SH_ARG_INT] < NPARM_REGS (SImode) \
2133 ? gen_rtx_REG ((MODE), (REG)) \
2134 : gen_rtx_PARALLEL ((MODE), \
2135 gen_rtvec (2, \
2136 gen_rtx_EXPR_LIST \
2137 (VOIDmode, NULL_RTX, \
2138 const0_rtx), \
2139 gen_rtx_EXPR_LIST \
2140 (VOIDmode, gen_rtx_REG ((MODE), \
2141 (REG)), \
2142 const0_rtx))))
2143
2144 #define SH5_WOULD_BE_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \
2145 (TARGET_SH5 \
2146 && ((MODE) == BLKmode || (MODE) == TImode || (MODE) == CDImode \
2147 || (MODE) == DCmode) \
2148 && ((CUM).arg_count[(int) SH_ARG_INT] \
2149 + (((MODE) == BLKmode ? int_size_in_bytes (TYPE) \
2150 : GET_MODE_SIZE (MODE)) \
2151 + 7) / 8) > NPARM_REGS (SImode))
2152
2153 /* Perform any needed actions needed for a function that is receiving a
2154 variable number of arguments. */
2155
2156 /* Implement `va_start' for varargs and stdarg. */
2157 #define EXPAND_BUILTIN_VA_START(valist, nextarg) \
2158 sh_va_start (valist, nextarg)
2159
2160 /* Call the function profiler with a given profile label.
2161 We use two .aligns, so as to make sure that both the .long is aligned
2162 on a 4 byte boundary, and that the .long is a fixed distance (2 bytes)
2163 from the trapa instruction. */
2164
2165 #define FUNCTION_PROFILER(STREAM,LABELNO) \
2166 { \
2167 if (TARGET_SHMEDIA) \
2168 { \
2169 fprintf((STREAM), "\tmovi\t33,r0\n"); \
2170 fprintf((STREAM), "\ttrapa\tr0\n"); \
2171 asm_fprintf((STREAM), "\t.long\t%LLP%d\n", (LABELNO)); \
2172 } \
2173 else \
2174 { \
2175 fprintf((STREAM), "\t.align\t2\n"); \
2176 fprintf((STREAM), "\ttrapa\t#33\n"); \
2177 fprintf((STREAM), "\t.align\t2\n"); \
2178 asm_fprintf((STREAM), "\t.long\t%LLP%d\n", (LABELNO)); \
2179 } \
2180 }
2181
2182 /* Define this macro if the code for function profiling should come
2183 before the function prologue. Normally, the profiling code comes
2184 after. */
2185
2186 #define PROFILE_BEFORE_PROLOGUE
2187
2188 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
2189 the stack pointer does not matter. The value is tested only in
2190 functions that have frame pointers.
2191 No definition is equivalent to always zero. */
2192
2193 #define EXIT_IGNORE_STACK 1
2194
2195 /*
2196 On the SH, the trampoline looks like
2197 2 0002 D202 mov.l l2,r2
2198 1 0000 D301 mov.l l1,r3
2199 3 0004 422B jmp @r2
2200 4 0006 0009 nop
2201 5 0008 00000000 l1: .long area
2202 6 000c 00000000 l2: .long function */
2203
2204 /* Length in units of the trampoline for entering a nested function. */
2205 #define TRAMPOLINE_SIZE (TARGET_SHMEDIA64 ? 40 : TARGET_SH5 ? 24 : 16)
2206
2207 /* Alignment required for a trampoline in bits . */
2208 #define TRAMPOLINE_ALIGNMENT \
2209 ((CACHE_LOG < 3 || (TARGET_SMALLCODE && ! TARGET_HARVARD)) ? 32 \
2210 : TARGET_SHMEDIA ? 256 : 64)
2211
2212 /* Emit RTL insns to initialize the variable parts of a trampoline.
2213 FNADDR is an RTX for the address of the function's pure code.
2214 CXT is an RTX for the static chain value for the function. */
2215
2216 #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
2217 sh_initialize_trampoline ((TRAMP), (FNADDR), (CXT))
2218
2219 /* On SH5, trampolines are SHmedia code, so add 1 to the address. */
2220
2221 #define TRAMPOLINE_ADJUST_ADDRESS(TRAMP) do \
2222 { \
2223 if (TARGET_SHMEDIA) \
2224 (TRAMP) = expand_simple_binop (Pmode, PLUS, (TRAMP), const1_rtx, \
2225 gen_reg_rtx (Pmode), 0, \
2226 OPTAB_LIB_WIDEN); \
2227 } while (0)
2228
2229 /* A C expression whose value is RTL representing the value of the return
2230 address for the frame COUNT steps up from the current frame.
2231 FRAMEADDR is already the frame pointer of the COUNT frame, so we
2232 can ignore COUNT. */
2233
2234 #define RETURN_ADDR_RTX(COUNT, FRAME) \
2235 (((COUNT) == 0) ? sh_get_pr_initial_val () : (rtx) 0)
2236
2237 /* A C expression whose value is RTL representing the location of the
2238 incoming return address at the beginning of any function, before the
2239 prologue. This RTL is either a REG, indicating that the return
2240 value is saved in REG, or a MEM representing a location in
2241 the stack. */
2242 #define INCOMING_RETURN_ADDR_RTX \
2243 gen_rtx_REG (Pmode, TARGET_SHMEDIA ? PR_MEDIA_REG : PR_REG)
2244 \f
2245 /* Addressing modes, and classification of registers for them. */
2246 #define HAVE_POST_INCREMENT TARGET_SH1
2247 #define HAVE_PRE_DECREMENT TARGET_SH1
2248
2249 #define USE_LOAD_POST_INCREMENT(mode) ((mode == SImode || mode == DImode) \
2250 ? 0 : TARGET_SH1)
2251 #define USE_LOAD_PRE_DECREMENT(mode) 0
2252 #define USE_STORE_POST_INCREMENT(mode) 0
2253 #define USE_STORE_PRE_DECREMENT(mode) ((mode == SImode || mode == DImode) \
2254 ? 0 : TARGET_SH1)
2255
2256 #define MOVE_BY_PIECES_P(SIZE, ALIGN) \
2257 (move_by_pieces_ninsns (SIZE, ALIGN, MOVE_MAX_PIECES + 1) \
2258 < (TARGET_SMALLCODE ? 2 : ((ALIGN >= 32) ? 16 : 2)))
2259
2260 #define STORE_BY_PIECES_P(SIZE, ALIGN) \
2261 (move_by_pieces_ninsns (SIZE, ALIGN, STORE_MAX_PIECES + 1) \
2262 < (TARGET_SMALLCODE ? 2 : ((ALIGN >= 32) ? 16 : 2)))
2263
2264 /* Macros to check register numbers against specific register classes. */
2265
2266 /* These assume that REGNO is a hard or pseudo reg number.
2267 They give nonzero only if REGNO is a hard reg of the suitable class
2268 or a pseudo reg currently allocated to a suitable hard reg.
2269 Since they use reg_renumber, they are safe only once reg_renumber
2270 has been allocated, which happens in local-alloc.c. */
2271
2272 #define REGNO_OK_FOR_BASE_P(REGNO) \
2273 (GENERAL_OR_AP_REGISTER_P (REGNO) \
2274 || GENERAL_OR_AP_REGISTER_P (reg_renumber[(REGNO)]))
2275 #define REGNO_OK_FOR_INDEX_P(REGNO) \
2276 (TARGET_SHMEDIA \
2277 ? (GENERAL_REGISTER_P (REGNO) \
2278 || GENERAL_REGISTER_P ((unsigned) reg_renumber[(REGNO)])) \
2279 : (REGNO) == R0_REG || (unsigned) reg_renumber[(REGNO)] == R0_REG)
2280
2281 /* Maximum number of registers that can appear in a valid memory
2282 address. */
2283
2284 #define MAX_REGS_PER_ADDRESS 2
2285
2286 /* Recognize any constant value that is a valid address. */
2287
2288 #define CONSTANT_ADDRESS_P(X) (GET_CODE (X) == LABEL_REF)
2289
2290 /* Nonzero if the constant value X is a legitimate general operand. */
2291
2292 #define LEGITIMATE_CONSTANT_P(X) \
2293 (TARGET_SHMEDIA \
2294 ? ((GET_MODE (X) != DFmode \
2295 && GET_MODE_CLASS (GET_MODE (X)) != MODE_VECTOR_FLOAT) \
2296 || (X) == CONST0_RTX (GET_MODE (X)) \
2297 || ! TARGET_SHMEDIA_FPU \
2298 || TARGET_SHMEDIA64) \
2299 : (GET_CODE (X) != CONST_DOUBLE \
2300 || GET_MODE (X) == DFmode || GET_MODE (X) == SFmode \
2301 || (TARGET_SH2E && (fp_zero_operand (X) || fp_one_operand (X)))))
2302
2303 /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
2304 and check its validity for a certain class.
2305 We have two alternate definitions for each of them.
2306 The usual definition accepts all pseudo regs; the other rejects
2307 them unless they have been allocated suitable hard regs.
2308 The symbol REG_OK_STRICT causes the latter definition to be used. */
2309
2310 #ifndef REG_OK_STRICT
2311
2312 /* Nonzero if X is a hard reg that can be used as a base reg
2313 or if it is a pseudo reg. */
2314 #define REG_OK_FOR_BASE_P(X) \
2315 (GENERAL_OR_AP_REGISTER_P (REGNO (X)) || REGNO (X) >= FIRST_PSEUDO_REGISTER)
2316
2317 /* Nonzero if X is a hard reg that can be used as an index
2318 or if it is a pseudo reg. */
2319 #define REG_OK_FOR_INDEX_P(X) \
2320 ((TARGET_SHMEDIA ? GENERAL_REGISTER_P (REGNO (X)) \
2321 : REGNO (X) == R0_REG) || REGNO (X) >= FIRST_PSEUDO_REGISTER)
2322
2323 /* Nonzero if X/OFFSET is a hard reg that can be used as an index
2324 or if X is a pseudo reg. */
2325 #define SUBREG_OK_FOR_INDEX_P(X, OFFSET) \
2326 ((TARGET_SHMEDIA ? GENERAL_REGISTER_P (REGNO (X)) \
2327 : REGNO (X) == R0_REG && OFFSET == 0) || REGNO (X) >= FIRST_PSEUDO_REGISTER)
2328
2329 #else
2330
2331 /* Nonzero if X is a hard reg that can be used as a base reg. */
2332 #define REG_OK_FOR_BASE_P(X) \
2333 REGNO_OK_FOR_BASE_P (REGNO (X))
2334
2335 /* Nonzero if X is a hard reg that can be used as an index. */
2336 #define REG_OK_FOR_INDEX_P(X) \
2337 REGNO_OK_FOR_INDEX_P (REGNO (X))
2338
2339 /* Nonzero if X/OFFSET is a hard reg that can be used as an index. */
2340 #define SUBREG_OK_FOR_INDEX_P(X, OFFSET) \
2341 (REGNO_OK_FOR_INDEX_P (REGNO (X)) && (OFFSET) == 0)
2342
2343 #endif
2344
2345 /* The 'Q' constraint is a pc relative load operand. */
2346 #define EXTRA_CONSTRAINT_Q(OP) \
2347 (GET_CODE (OP) == MEM \
2348 && ((GET_CODE (XEXP ((OP), 0)) == LABEL_REF) \
2349 || (GET_CODE (XEXP ((OP), 0)) == CONST \
2350 && GET_CODE (XEXP (XEXP ((OP), 0), 0)) == PLUS \
2351 && GET_CODE (XEXP (XEXP (XEXP ((OP), 0), 0), 0)) == LABEL_REF \
2352 && GET_CODE (XEXP (XEXP (XEXP ((OP), 0), 0), 1)) == CONST_INT)))
2353
2354 /* Extra address constraints. */
2355 #define EXTRA_CONSTRAINT_A(OP, STR) 0
2356
2357 /* Constraint for selecting FLDI0 or FLDI1 instruction. If the clobber
2358 operand is not SCRATCH (i.e. REG) then R0 is probably being
2359 used, hence mova is being used, hence do not select this pattern */
2360 #define EXTRA_CONSTRAINT_Bsc(OP) (GET_CODE(OP) == SCRATCH)
2361 #define EXTRA_CONSTRAINT_B(OP, STR) \
2362 ((STR)[1] == 's' && (STR)[2] == 'c' ? EXTRA_CONSTRAINT_Bsc (OP) \
2363 : 0)
2364
2365 /* The `Css' constraint is a signed 16-bit constant, literal or symbolic. */
2366 #define EXTRA_CONSTRAINT_Css(OP) \
2367 (GET_CODE (OP) == CONST \
2368 && GET_CODE (XEXP ((OP), 0)) == SIGN_EXTEND \
2369 && (GET_MODE (XEXP ((OP), 0)) == DImode \
2370 || GET_MODE (XEXP ((OP), 0)) == SImode) \
2371 && GET_CODE (XEXP (XEXP ((OP), 0), 0)) == TRUNCATE \
2372 && GET_MODE (XEXP (XEXP ((OP), 0), 0)) == HImode \
2373 && (MOVI_SHORI_BASE_OPERAND_P (XEXP (XEXP (XEXP ((OP), 0), 0), 0)) \
2374 || (GET_CODE (XEXP (XEXP (XEXP ((OP), 0), 0), 0)) == ASHIFTRT \
2375 && (MOVI_SHORI_BASE_OPERAND_P \
2376 (XEXP (XEXP (XEXP (XEXP ((OP), 0), 0), 0), 0))) \
2377 && GET_CODE (XEXP (XEXP (XEXP (XEXP ((OP), 0), 0), 0), \
2378 1)) == CONST_INT)))
2379
2380 /* The `Csu' constraint is an unsigned 16-bit constant, literal or symbolic. */
2381 #define EXTRA_CONSTRAINT_Csu(OP) \
2382 (GET_CODE (OP) == CONST \
2383 && GET_CODE (XEXP ((OP), 0)) == ZERO_EXTEND \
2384 && (GET_MODE (XEXP ((OP), 0)) == DImode \
2385 || GET_MODE (XEXP ((OP), 0)) == SImode) \
2386 && GET_CODE (XEXP (XEXP ((OP), 0), 0)) == TRUNCATE \
2387 && GET_MODE (XEXP (XEXP ((OP), 0), 0)) == HImode \
2388 && (MOVI_SHORI_BASE_OPERAND_P (XEXP (XEXP (XEXP ((OP), 0), 0), 0)) \
2389 || (GET_CODE (XEXP (XEXP (XEXP ((OP), 0), 0), 0)) == ASHIFTRT \
2390 && (MOVI_SHORI_BASE_OPERAND_P \
2391 (XEXP (XEXP (XEXP (XEXP ((OP), 0), 0), 0), 0))) \
2392 && GET_CODE (XEXP (XEXP (XEXP (XEXP ((OP), 0), 0), 0), \
2393 1)) == CONST_INT)))
2394
2395 /* Check whether OP is a datalabel unspec. */
2396 #define DATALABEL_REF_NO_CONST_P(OP) \
2397 (GET_CODE (OP) == UNSPEC \
2398 && XINT ((OP), 1) == UNSPEC_DATALABEL \
2399 && XVECLEN ((OP), 0) == 1 \
2400 && GET_CODE (XVECEXP ((OP), 0, 0)) == LABEL_REF)
2401
2402 #define GOT_ENTRY_P(OP) \
2403 (GET_CODE (OP) == CONST && GET_CODE (XEXP ((OP), 0)) == UNSPEC \
2404 && XINT (XEXP ((OP), 0), 1) == UNSPEC_GOT)
2405
2406 #define GOTPLT_ENTRY_P(OP) \
2407 (GET_CODE (OP) == CONST && GET_CODE (XEXP ((OP), 0)) == UNSPEC \
2408 && XINT (XEXP ((OP), 0), 1) == UNSPEC_GOTPLT)
2409
2410 #define UNSPEC_GOTOFF_P(OP) \
2411 (GET_CODE (OP) == UNSPEC && XINT ((OP), 1) == UNSPEC_GOTOFF)
2412
2413 #define GOTOFF_P(OP) \
2414 (GET_CODE (OP) == CONST \
2415 && (UNSPEC_GOTOFF_P (XEXP ((OP), 0)) \
2416 || (GET_CODE (XEXP ((OP), 0)) == PLUS \
2417 && UNSPEC_GOTOFF_P (XEXP (XEXP ((OP), 0), 0)) \
2418 && GET_CODE (XEXP (XEXP ((OP), 0), 1)) == CONST_INT)))
2419
2420 #define PIC_ADDR_P(OP) \
2421 (GET_CODE (OP) == CONST && GET_CODE (XEXP ((OP), 0)) == UNSPEC \
2422 && XINT (XEXP ((OP), 0), 1) == UNSPEC_PIC)
2423
2424 #define PIC_OFFSET_P(OP) \
2425 (PIC_ADDR_P (OP) \
2426 && GET_CODE (XVECEXP (XEXP ((OP), 0), 0, 0)) == MINUS \
2427 && reg_mentioned_p (pc_rtx, XEXP (XVECEXP (XEXP ((OP), 0), 0, 0), 1)))
2428
2429 #define PIC_DIRECT_ADDR_P(OP) \
2430 (PIC_ADDR_P (OP) && GET_CODE (XVECEXP (XEXP ((OP), 0), 0, 0)) != MINUS)
2431
2432 #define NON_PIC_REFERENCE_P(OP) \
2433 (GET_CODE (OP) == LABEL_REF || GET_CODE (OP) == SYMBOL_REF \
2434 || (GET_CODE (OP) == CONST \
2435 && (GET_CODE (XEXP ((OP), 0)) == LABEL_REF \
2436 || GET_CODE (XEXP ((OP), 0)) == SYMBOL_REF \
2437 || DATALABEL_REF_NO_CONST_P (XEXP ((OP), 0)))) \
2438 || (GET_CODE (OP) == CONST && GET_CODE (XEXP ((OP), 0)) == PLUS \
2439 && (GET_CODE (XEXP (XEXP ((OP), 0), 0)) == SYMBOL_REF \
2440 || GET_CODE (XEXP (XEXP ((OP), 0), 0)) == LABEL_REF \
2441 || DATALABEL_REF_NO_CONST_P (XEXP (XEXP ((OP), 0), 0))) \
2442 && GET_CODE (XEXP (XEXP ((OP), 0), 1)) == CONST_INT))
2443
2444 #define PIC_REFERENCE_P(OP) \
2445 (GOT_ENTRY_P (OP) || GOTPLT_ENTRY_P (OP) \
2446 || GOTOFF_P (OP) || PIC_ADDR_P (OP))
2447
2448 #define MOVI_SHORI_BASE_OPERAND_P(OP) \
2449 (flag_pic \
2450 ? (GOT_ENTRY_P (OP) || GOTPLT_ENTRY_P (OP) || GOTOFF_P (OP) \
2451 || PIC_OFFSET_P (OP)) \
2452 : NON_PIC_REFERENCE_P (OP))
2453
2454 /* The `Csy' constraint is a label or a symbol. */
2455 #define EXTRA_CONSTRAINT_Csy(OP) \
2456 (NON_PIC_REFERENCE_P (OP) || PIC_DIRECT_ADDR_P (OP))
2457
2458 /* A zero in any shape or form. */
2459 #define EXTRA_CONSTRAINT_Z(OP) \
2460 ((OP) == CONST0_RTX (GET_MODE (OP)))
2461
2462 /* Any vector constant we can handle. */
2463 #define EXTRA_CONSTRAINT_W(OP) \
2464 (GET_CODE (OP) == CONST_VECTOR \
2465 && (sh_rep_vec ((OP), VOIDmode) \
2466 || (HOST_BITS_PER_WIDE_INT >= 64 \
2467 ? sh_const_vec ((OP), VOIDmode) \
2468 : sh_1el_vec ((OP), VOIDmode))))
2469
2470 /* A non-explicit constant that can be loaded directly into a general purpose
2471 register. This is like 's' except we don't allow PIC_DIRECT_ADDR_P. */
2472 #define EXTRA_CONSTRAINT_Cpg(OP) \
2473 (CONSTANT_P (OP) \
2474 && GET_CODE (OP) != CONST_INT \
2475 && GET_CODE (OP) != CONST_DOUBLE \
2476 && (!flag_pic \
2477 || (LEGITIMATE_PIC_OPERAND_P (OP) \
2478 && (! PIC_ADDR_P (OP) || PIC_OFFSET_P (OP)) \
2479 && GET_CODE (OP) != LABEL_REF)))
2480 #define EXTRA_CONSTRAINT_C(OP, STR) \
2481 ((STR)[1] == 's' && (STR)[2] == 's' ? EXTRA_CONSTRAINT_Css (OP) \
2482 : (STR)[1] == 's' && (STR)[2] == 'u' ? EXTRA_CONSTRAINT_Csu (OP) \
2483 : (STR)[1] == 's' && (STR)[2] == 'y' ? EXTRA_CONSTRAINT_Csy (OP) \
2484 : (STR)[1] == 'p' && (STR)[2] == 'g' ? EXTRA_CONSTRAINT_Cpg (OP) \
2485 : 0)
2486
2487 #define EXTRA_MEMORY_CONSTRAINT(C,STR) ((C) == 'S')
2488 #define EXTRA_CONSTRAINT_Sr0(OP) \
2489 (memory_operand((OP), GET_MODE (OP)) \
2490 && ! refers_to_regno_p (R0_REG, R0_REG + 1, OP, (rtx *)0))
2491 #define EXTRA_CONSTRAINT_Sua(OP) \
2492 (memory_operand((OP), GET_MODE (OP)) \
2493 && GET_CODE (XEXP (OP, 0)) != PLUS)
2494 #define EXTRA_CONSTRAINT_S(OP, STR) \
2495 ((STR)[1] == 'r' && (STR)[2] == '0' ? EXTRA_CONSTRAINT_Sr0 (OP) \
2496 : (STR)[1] == 'u' && (STR)[2] == 'a' ? EXTRA_CONSTRAINT_Sua (OP) \
2497 : 0)
2498
2499 #define EXTRA_CONSTRAINT_STR(OP, C, STR) \
2500 ((C) == 'Q' ? EXTRA_CONSTRAINT_Q (OP) \
2501 : (C) == 'A' ? EXTRA_CONSTRAINT_A ((OP), (STR)) \
2502 : (C) == 'B' ? EXTRA_CONSTRAINT_B ((OP), (STR)) \
2503 : (C) == 'C' ? EXTRA_CONSTRAINT_C ((OP), (STR)) \
2504 : (C) == 'S' ? EXTRA_CONSTRAINT_S ((OP), (STR)) \
2505 : (C) == 'W' ? EXTRA_CONSTRAINT_W (OP) \
2506 : (C) == 'Z' ? EXTRA_CONSTRAINT_Z (OP) \
2507 : 0)
2508 \f
2509 /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
2510 that is a valid memory address for an instruction.
2511 The MODE argument is the machine mode for the MEM expression
2512 that wants to use this address. */
2513
2514 #define MODE_DISP_OK_4(X,MODE) \
2515 (GET_MODE_SIZE (MODE) == 4 && (unsigned) INTVAL (X) < 64 \
2516 && ! (INTVAL (X) & 3) && ! (TARGET_SH2E && (MODE) == SFmode))
2517
2518 #define MODE_DISP_OK_8(X,MODE) \
2519 ((GET_MODE_SIZE(MODE)==8) && ((unsigned)INTVAL(X)<60) \
2520 && ! (INTVAL(X) & 3) && ! (TARGET_SH4 && (MODE) == DFmode))
2521
2522 #undef MODE_DISP_OK_4
2523 #define MODE_DISP_OK_4(X,MODE) \
2524 ((GET_MODE_SIZE (MODE) == 4 && (unsigned) INTVAL (X) < 64 \
2525 && ! (INTVAL (X) & 3) && ! (TARGET_SH2E && (MODE) == SFmode)) \
2526 || ((GET_MODE_SIZE(MODE)==4) && ((unsigned)INTVAL(X)<16383) \
2527 && ! (INTVAL(X) & 3) && TARGET_SH2A))
2528
2529 #undef MODE_DISP_OK_8
2530 #define MODE_DISP_OK_8(X,MODE) \
2531 (((GET_MODE_SIZE(MODE)==8) && ((unsigned)INTVAL(X)<60) \
2532 && ! (INTVAL(X) & 3) && ! ((TARGET_SH4 || TARGET_SH2A) && (MODE) == DFmode)) \
2533 || ((GET_MODE_SIZE(MODE)==8) && ((unsigned)INTVAL(X)<8192) \
2534 && ! (INTVAL(X) & (TARGET_SH2A_DOUBLE ? 7 : 3)) && (TARGET_SH2A && (MODE) == DFmode)))
2535
2536 #define BASE_REGISTER_RTX_P(X) \
2537 ((GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) \
2538 || (GET_CODE (X) == SUBREG \
2539 && TRULY_NOOP_TRUNCATION (GET_MODE_BITSIZE (GET_MODE ((X))), \
2540 GET_MODE_BITSIZE (GET_MODE (SUBREG_REG (X)))) \
2541 && GET_CODE (SUBREG_REG (X)) == REG \
2542 && REG_OK_FOR_BASE_P (SUBREG_REG (X))))
2543
2544 /* Since this must be r0, which is a single register class, we must check
2545 SUBREGs more carefully, to be sure that we don't accept one that extends
2546 outside the class. */
2547 #define INDEX_REGISTER_RTX_P(X) \
2548 ((GET_CODE (X) == REG && REG_OK_FOR_INDEX_P (X)) \
2549 || (GET_CODE (X) == SUBREG \
2550 && TRULY_NOOP_TRUNCATION (GET_MODE_BITSIZE (GET_MODE ((X))), \
2551 GET_MODE_BITSIZE (GET_MODE (SUBREG_REG (X)))) \
2552 && GET_CODE (SUBREG_REG (X)) == REG \
2553 && SUBREG_OK_FOR_INDEX_P (SUBREG_REG (X), SUBREG_BYTE (X))))
2554
2555 /* Jump to LABEL if X is a valid address RTX. This must also take
2556 REG_OK_STRICT into account when deciding about valid registers, but it uses
2557 the above macros so we are in luck.
2558
2559 Allow REG
2560 REG+disp
2561 REG+r0
2562 REG++
2563 --REG */
2564
2565 /* ??? The SH2e does not have the REG+disp addressing mode when loading values
2566 into the FRx registers. We implement this by setting the maximum offset
2567 to zero when the value is SFmode. This also restricts loading of SFmode
2568 values into the integer registers, but that can't be helped. */
2569
2570 /* The SH allows a displacement in a QI or HI amode, but only when the
2571 other operand is R0. GCC doesn't handle this very well, so we forgo
2572 all of that.
2573
2574 A legitimate index for a QI or HI is 0, SI can be any number 0..63,
2575 DI can be any number 0..60. */
2576
2577 #define GO_IF_LEGITIMATE_INDEX(MODE, OP, LABEL) \
2578 do { \
2579 if (GET_CODE (OP) == CONST_INT) \
2580 { \
2581 if (TARGET_SHMEDIA) \
2582 { \
2583 int MODE_SIZE; \
2584 /* Check if this the address of an unaligned load / store. */\
2585 if ((MODE) == VOIDmode) \
2586 { \
2587 if (CONST_OK_FOR_I06 (INTVAL (OP))) \
2588 goto LABEL; \
2589 break; \
2590 } \
2591 MODE_SIZE = GET_MODE_SIZE (MODE); \
2592 if (! (INTVAL (OP) & (MODE_SIZE - 1)) \
2593 && INTVAL (OP) >= -512 * MODE_SIZE \
2594 && INTVAL (OP) < 512 * MODE_SIZE) \
2595 goto LABEL; \
2596 else \
2597 break; \
2598 } \
2599 if (MODE_DISP_OK_4 ((OP), (MODE))) goto LABEL; \
2600 if (MODE_DISP_OK_8 ((OP), (MODE))) goto LABEL; \
2601 } \
2602 } while(0)
2603
2604 #define ALLOW_INDEXED_ADDRESS \
2605 ((!TARGET_SHMEDIA32 && !TARGET_SHCOMPACT) || TARGET_ALLOW_INDEXED_ADDRESS)
2606
2607 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \
2608 { \
2609 if (BASE_REGISTER_RTX_P (X)) \
2610 goto LABEL; \
2611 else if ((GET_CODE (X) == POST_INC || GET_CODE (X) == PRE_DEC) \
2612 && ! TARGET_SHMEDIA \
2613 && BASE_REGISTER_RTX_P (XEXP ((X), 0))) \
2614 goto LABEL; \
2615 else if (GET_CODE (X) == PLUS \
2616 && ((MODE) != PSImode || reload_completed)) \
2617 { \
2618 rtx xop0 = XEXP ((X), 0); \
2619 rtx xop1 = XEXP ((X), 1); \
2620 if (GET_MODE_SIZE (MODE) <= 8 && BASE_REGISTER_RTX_P (xop0)) \
2621 GO_IF_LEGITIMATE_INDEX ((MODE), xop1, LABEL); \
2622 if ((ALLOW_INDEXED_ADDRESS || GET_MODE (X) == DImode \
2623 || ((xop0 == stack_pointer_rtx \
2624 || xop0 == hard_frame_pointer_rtx) \
2625 && REG_P (xop1) && REGNO (xop1) == R0_REG) \
2626 || ((xop1 == stack_pointer_rtx \
2627 || xop1 == hard_frame_pointer_rtx) \
2628 && REG_P (xop0) && REGNO (xop0) == R0_REG)) \
2629 && ((!TARGET_SHMEDIA && GET_MODE_SIZE (MODE) <= 4) \
2630 || (TARGET_SHMEDIA && GET_MODE_SIZE (MODE) <= 8) \
2631 || ((TARGET_SH4 || TARGET_SH2A_DOUBLE) \
2632 && TARGET_FMOVD && MODE == DFmode))) \
2633 { \
2634 if (BASE_REGISTER_RTX_P (xop1) && INDEX_REGISTER_RTX_P (xop0))\
2635 goto LABEL; \
2636 if (INDEX_REGISTER_RTX_P (xop1) && BASE_REGISTER_RTX_P (xop0))\
2637 goto LABEL; \
2638 } \
2639 } \
2640 }
2641 \f
2642 /* Try machine-dependent ways of modifying an illegitimate address
2643 to be legitimate. If we find one, return the new, valid address.
2644 This macro is used in only one place: `memory_address' in explow.c.
2645
2646 OLDX is the address as it was before break_out_memory_refs was called.
2647 In some cases it is useful to look at this to decide what needs to be done.
2648
2649 MODE and WIN are passed so that this macro can use
2650 GO_IF_LEGITIMATE_ADDRESS.
2651
2652 It is always safe for this macro to do nothing. It exists to recognize
2653 opportunities to optimize the output.
2654
2655 For the SH, if X is almost suitable for indexing, but the offset is
2656 out of range, convert it into a normal form so that cse has a chance
2657 of reducing the number of address registers used. */
2658
2659 #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) \
2660 { \
2661 if (flag_pic) \
2662 (X) = legitimize_pic_address (OLDX, MODE, NULL_RTX); \
2663 if (GET_CODE (X) == PLUS \
2664 && (GET_MODE_SIZE (MODE) == 4 \
2665 || GET_MODE_SIZE (MODE) == 8) \
2666 && GET_CODE (XEXP ((X), 1)) == CONST_INT \
2667 && BASE_REGISTER_RTX_P (XEXP ((X), 0)) \
2668 && ! TARGET_SHMEDIA \
2669 && ! ((TARGET_SH4 || TARGET_SH2A_DOUBLE) && (MODE) == DFmode) \
2670 && ! (TARGET_SH2E && (MODE) == SFmode)) \
2671 { \
2672 rtx index_rtx = XEXP ((X), 1); \
2673 HOST_WIDE_INT offset = INTVAL (index_rtx), offset_base; \
2674 rtx sum; \
2675 \
2676 GO_IF_LEGITIMATE_INDEX ((MODE), index_rtx, WIN); \
2677 /* On rare occasions, we might get an unaligned pointer \
2678 that is indexed in a way to give an aligned address. \
2679 Therefore, keep the lower two bits in offset_base. */ \
2680 /* Instead of offset_base 128..131 use 124..127, so that \
2681 simple add suffices. */ \
2682 if (offset > 127) \
2683 { \
2684 offset_base = ((offset + 4) & ~60) - 4; \
2685 } \
2686 else \
2687 offset_base = offset & ~60; \
2688 /* Sometimes the normal form does not suit DImode. We \
2689 could avoid that by using smaller ranges, but that \
2690 would give less optimized code when SImode is \
2691 prevalent. */ \
2692 if (GET_MODE_SIZE (MODE) + offset - offset_base <= 64) \
2693 { \
2694 sum = expand_binop (Pmode, add_optab, XEXP ((X), 0), \
2695 GEN_INT (offset_base), NULL_RTX, 0, \
2696 OPTAB_LIB_WIDEN); \
2697 \
2698 (X) = gen_rtx_PLUS (Pmode, sum, GEN_INT (offset - offset_base)); \
2699 goto WIN; \
2700 } \
2701 } \
2702 }
2703
2704 /* A C compound statement that attempts to replace X, which is an address
2705 that needs reloading, with a valid memory address for an operand of
2706 mode MODE. WIN is a C statement label elsewhere in the code.
2707
2708 Like for LEGITIMIZE_ADDRESS, for the SH we try to get a normal form
2709 of the address. That will allow inheritance of the address reloads. */
2710
2711 #define LEGITIMIZE_RELOAD_ADDRESS(X,MODE,OPNUM,TYPE,IND_LEVELS,WIN) \
2712 { \
2713 if (GET_CODE (X) == PLUS \
2714 && (GET_MODE_SIZE (MODE) == 4 || GET_MODE_SIZE (MODE) == 8) \
2715 && GET_CODE (XEXP (X, 1)) == CONST_INT \
2716 && BASE_REGISTER_RTX_P (XEXP (X, 0)) \
2717 && ! TARGET_SHMEDIA \
2718 && ! (TARGET_SH4 && (MODE) == DFmode) \
2719 && ! ((MODE) == PSImode && (TYPE) == RELOAD_FOR_INPUT_ADDRESS) \
2720 && (ALLOW_INDEXED_ADDRESS \
2721 || XEXP ((X), 0) == stack_pointer_rtx \
2722 || XEXP ((X), 0) == hard_frame_pointer_rtx)) \
2723 { \
2724 rtx index_rtx = XEXP (X, 1); \
2725 HOST_WIDE_INT offset = INTVAL (index_rtx), offset_base; \
2726 rtx sum; \
2727 \
2728 if (TARGET_SH2A && (MODE) == DFmode && (offset & 0x7)) \
2729 { \
2730 push_reload (X, NULL_RTX, &X, NULL, \
2731 BASE_REG_CLASS, Pmode, VOIDmode, 0, 0, (OPNUM), \
2732 (TYPE)); \
2733 goto WIN; \
2734 } \
2735 if (TARGET_SH2E && MODE == SFmode) \
2736 { \
2737 X = copy_rtx (X); \
2738 push_reload (index_rtx, NULL_RTX, &XEXP (X, 1), NULL, \
2739 R0_REGS, Pmode, VOIDmode, 0, 0, (OPNUM), \
2740 (TYPE)); \
2741 goto WIN; \
2742 } \
2743 /* Instead of offset_base 128..131 use 124..127, so that \
2744 simple add suffices. */ \
2745 if (offset > 127) \
2746 { \
2747 offset_base = ((offset + 4) & ~60) - 4; \
2748 } \
2749 else \
2750 offset_base = offset & ~60; \
2751 /* Sometimes the normal form does not suit DImode. We \
2752 could avoid that by using smaller ranges, but that \
2753 would give less optimized code when SImode is \
2754 prevalent. */ \
2755 if (GET_MODE_SIZE (MODE) + offset - offset_base <= 64) \
2756 { \
2757 sum = gen_rtx_PLUS (Pmode, XEXP (X, 0), \
2758 GEN_INT (offset_base)); \
2759 X = gen_rtx_PLUS (Pmode, sum, GEN_INT (offset - offset_base));\
2760 push_reload (sum, NULL_RTX, &XEXP (X, 0), NULL, \
2761 BASE_REG_CLASS, Pmode, VOIDmode, 0, 0, (OPNUM), \
2762 (TYPE)); \
2763 goto WIN; \
2764 } \
2765 } \
2766 /* We must re-recognize what we created before. */ \
2767 else if (GET_CODE (X) == PLUS \
2768 && (GET_MODE_SIZE (MODE) == 4 || GET_MODE_SIZE (MODE) == 8) \
2769 && GET_CODE (XEXP (X, 0)) == PLUS \
2770 && GET_CODE (XEXP (XEXP (X, 0), 1)) == CONST_INT \
2771 && BASE_REGISTER_RTX_P (XEXP (XEXP (X, 0), 0)) \
2772 && GET_CODE (XEXP (X, 1)) == CONST_INT \
2773 && ! TARGET_SHMEDIA \
2774 && ! (TARGET_SH2E && MODE == SFmode)) \
2775 { \
2776 /* Because this address is so complex, we know it must have \
2777 been created by LEGITIMIZE_RELOAD_ADDRESS before; thus, \
2778 it is already unshared, and needs no further unsharing. */ \
2779 push_reload (XEXP ((X), 0), NULL_RTX, &XEXP ((X), 0), NULL, \
2780 BASE_REG_CLASS, Pmode, VOIDmode, 0, 0, (OPNUM), (TYPE));\
2781 goto WIN; \
2782 } \
2783 }
2784
2785 /* Go to LABEL if ADDR (a legitimate address expression)
2786 has an effect that depends on the machine mode it is used for.
2787
2788 ??? Strictly speaking, we should also include all indexed addressing,
2789 because the index scale factor is the length of the operand.
2790 However, the impact of GO_IF_MODE_DEPENDENT_ADDRESS would be to
2791 high if we did that. So we rely on reload to fix things up. */
2792
2793 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) \
2794 { \
2795 if (GET_CODE(ADDR) == PRE_DEC || GET_CODE(ADDR) == POST_INC) \
2796 goto LABEL; \
2797 }
2798 \f
2799 /* Specify the machine mode that this machine uses
2800 for the index in the tablejump instruction. */
2801 #define CASE_VECTOR_MODE ((! optimize || TARGET_BIGTABLE) ? SImode : HImode)
2802
2803 #define CASE_VECTOR_SHORTEN_MODE(MIN_OFFSET, MAX_OFFSET, BODY) \
2804 ((MIN_OFFSET) >= 0 && (MAX_OFFSET) <= 127 \
2805 ? (ADDR_DIFF_VEC_FLAGS (BODY).offset_unsigned = 0, QImode) \
2806 : (MIN_OFFSET) >= 0 && (MAX_OFFSET) <= 255 \
2807 ? (ADDR_DIFF_VEC_FLAGS (BODY).offset_unsigned = 1, QImode) \
2808 : (MIN_OFFSET) >= -32768 && (MAX_OFFSET) <= 32767 ? HImode \
2809 : SImode)
2810
2811 /* Define as C expression which evaluates to nonzero if the tablejump
2812 instruction expects the table to contain offsets from the address of the
2813 table.
2814 Do not define this if the table should contain absolute addresses. */
2815 #define CASE_VECTOR_PC_RELATIVE 1
2816
2817 /* Define it here, so that it doesn't get bumped to 64-bits on SHmedia. */
2818 #define FLOAT_TYPE_SIZE 32
2819
2820 /* Since the SH2e has only `float' support, it is desirable to make all
2821 floating point types equivalent to `float'. */
2822 #define DOUBLE_TYPE_SIZE ((TARGET_SH2E && ! TARGET_SH4 && ! TARGET_SH2A_DOUBLE) ? 32 : 64)
2823
2824 /* 'char' is signed by default. */
2825 #define DEFAULT_SIGNED_CHAR 1
2826
2827 /* The type of size_t unsigned int. */
2828 #define SIZE_TYPE (TARGET_SH5 ? "long unsigned int" : "unsigned int")
2829
2830 #undef PTRDIFF_TYPE
2831 #define PTRDIFF_TYPE (TARGET_SH5 ? "long int" : "int")
2832
2833 #define WCHAR_TYPE "short unsigned int"
2834 #define WCHAR_TYPE_SIZE 16
2835
2836 #define SH_ELF_WCHAR_TYPE "long int"
2837
2838 /* Max number of bytes we can move from memory to memory
2839 in one reasonably fast instruction. */
2840 #define MOVE_MAX (TARGET_SHMEDIA ? 8 : 4)
2841
2842 /* Maximum value possibly taken by MOVE_MAX. Must be defined whenever
2843 MOVE_MAX is not a compile-time constant. */
2844 #define MAX_MOVE_MAX 8
2845
2846 /* Max number of bytes we want move_by_pieces to be able to copy
2847 efficiently. */
2848 #define MOVE_MAX_PIECES (TARGET_SH4 || TARGET_SHMEDIA ? 8 : 4)
2849
2850 /* Define if operations between registers always perform the operation
2851 on the full register even if a narrower mode is specified. */
2852 #define WORD_REGISTER_OPERATIONS
2853
2854 /* Define if loading in MODE, an integral mode narrower than BITS_PER_WORD
2855 will either zero-extend or sign-extend. The value of this macro should
2856 be the code that says which one of the two operations is implicitly
2857 done, UNKNOWN if none. */
2858 /* For SHmedia, we can truncate to QImode easier using zero extension. */
2859 /* FP registers can load SImode values, but don't implicitly sign-extend
2860 them to DImode. */
2861 #define LOAD_EXTEND_OP(MODE) \
2862 (((MODE) == QImode && TARGET_SHMEDIA) ? ZERO_EXTEND \
2863 : (MODE) != SImode ? SIGN_EXTEND : UNKNOWN)
2864
2865 /* Define if loading short immediate values into registers sign extends. */
2866 #define SHORT_IMMEDIATES_SIGN_EXTEND
2867
2868 /* Nonzero if access to memory by bytes is no faster than for words. */
2869 #define SLOW_BYTE_ACCESS 1
2870
2871 /* Immediate shift counts are truncated by the output routines (or was it
2872 the assembler?). Shift counts in a register are truncated by SH. Note
2873 that the native compiler puts too large (> 32) immediate shift counts
2874 into a register and shifts by the register, letting the SH decide what
2875 to do instead of doing that itself. */
2876 /* ??? The library routines in lib1funcs.asm truncate the shift count.
2877 However, the SH3 has hardware shifts that do not truncate exactly as gcc
2878 expects - the sign bit is significant - so it appears that we need to
2879 leave this zero for correct SH3 code. */
2880 #define SHIFT_COUNT_TRUNCATED (! TARGET_SH3 && ! TARGET_SH2A)
2881
2882 /* All integers have the same format so truncation is easy. */
2883 /* But SHmedia must sign-extend DImode when truncating to SImode. */
2884 #define TRULY_NOOP_TRUNCATION(OUTPREC,INPREC) \
2885 (!TARGET_SHMEDIA || (INPREC) < 64 || (OUTPREC) >= 64)
2886
2887 /* Define this if addresses of constant functions
2888 shouldn't be put through pseudo regs where they can be cse'd.
2889 Desirable on machines where ordinary constants are expensive
2890 but a CALL with constant address is cheap. */
2891 /*#define NO_FUNCTION_CSE 1*/
2892
2893 /* The machine modes of pointers and functions. */
2894 #define Pmode (TARGET_SHMEDIA64 ? DImode : SImode)
2895 #define FUNCTION_MODE Pmode
2896
2897 /* The multiply insn on the SH1 and the divide insns on the SH1 and SH2
2898 are actually function calls with some special constraints on arguments
2899 and register usage.
2900
2901 These macros tell reorg that the references to arguments and
2902 register clobbers for insns of type sfunc do not appear to happen
2903 until after the millicode call. This allows reorg to put insns
2904 which set the argument registers into the delay slot of the millicode
2905 call -- thus they act more like traditional CALL_INSNs.
2906
2907 get_attr_is_sfunc will try to recognize the given insn, so make sure to
2908 filter out things it will not accept -- SEQUENCE, USE and CLOBBER insns
2909 in particular. */
2910
2911 #define INSN_SETS_ARE_DELAYED(X) \
2912 ((GET_CODE (X) == INSN \
2913 && GET_CODE (PATTERN (X)) != SEQUENCE \
2914 && GET_CODE (PATTERN (X)) != USE \
2915 && GET_CODE (PATTERN (X)) != CLOBBER \
2916 && get_attr_is_sfunc (X)))
2917
2918 #define INSN_REFERENCES_ARE_DELAYED(X) \
2919 ((GET_CODE (X) == INSN \
2920 && GET_CODE (PATTERN (X)) != SEQUENCE \
2921 && GET_CODE (PATTERN (X)) != USE \
2922 && GET_CODE (PATTERN (X)) != CLOBBER \
2923 && get_attr_is_sfunc (X)))
2924
2925 \f
2926 /* Position Independent Code. */
2927
2928 /* We can't directly access anything that contains a symbol,
2929 nor can we indirect via the constant pool. */
2930 #define LEGITIMATE_PIC_OPERAND_P(X) \
2931 ((! nonpic_symbol_mentioned_p (X) \
2932 && (GET_CODE (X) != SYMBOL_REF \
2933 || ! CONSTANT_POOL_ADDRESS_P (X) \
2934 || ! nonpic_symbol_mentioned_p (get_pool_constant (X)))) \
2935 || (TARGET_SHMEDIA && GET_CODE (X) == LABEL_REF))
2936
2937 #define SYMBOLIC_CONST_P(X) \
2938 ((GET_CODE (X) == SYMBOL_REF || GET_CODE (X) == LABEL_REF) \
2939 && nonpic_symbol_mentioned_p (X))
2940 \f
2941 /* Compute extra cost of moving data between one register class
2942 and another. */
2943
2944 /* If SECONDARY*_RELOAD_CLASS says something about the src/dst pair, regclass
2945 uses this information. Hence, the general register <-> floating point
2946 register information here is not used for SFmode. */
2947
2948 #define REGCLASS_HAS_GENERAL_REG(CLASS) \
2949 ((CLASS) == GENERAL_REGS || (CLASS) == R0_REGS \
2950 || (! TARGET_SHMEDIA && (CLASS) == SIBCALL_REGS))
2951
2952 #define REGCLASS_HAS_FP_REG(CLASS) \
2953 ((CLASS) == FP0_REGS || (CLASS) == FP_REGS \
2954 || (CLASS) == DF_REGS || (CLASS) == DF_HI_REGS)
2955
2956 #define REGISTER_MOVE_COST(MODE, SRCCLASS, DSTCLASS) \
2957 sh_register_move_cost ((MODE), (SRCCLASS), (DSTCLASS))
2958
2959 /* ??? Perhaps make MEMORY_MOVE_COST depend on compiler option? This
2960 would be so that people with slow memory systems could generate
2961 different code that does fewer memory accesses. */
2962
2963 /* A C expression for the cost of a branch instruction. A value of 1
2964 is the default; other values are interpreted relative to that.
2965 The SH1 does not have delay slots, hence we get a pipeline stall
2966 at every branch. The SH4 is superscalar, so the single delay slot
2967 is not sufficient to keep both pipelines filled. */
2968 #define BRANCH_COST (TARGET_SH5 ? 1 : ! TARGET_SH2 || TARGET_HARD_SH4 ? 2 : 1)
2969 \f
2970 /* Assembler output control. */
2971
2972 /* A C string constant describing how to begin a comment in the target
2973 assembler language. The compiler assumes that the comment will end at
2974 the end of the line. */
2975 #define ASM_COMMENT_START "!"
2976
2977 #define ASM_APP_ON ""
2978 #define ASM_APP_OFF ""
2979 #define FILE_ASM_OP "\t.file\n"
2980 #define SET_ASM_OP "\t.set\t"
2981
2982 /* How to change between sections. */
2983
2984 #define TEXT_SECTION_ASM_OP (TARGET_SHMEDIA32 ? "\t.section\t.text..SHmedia32,\"ax\"" : "\t.text")
2985 #define DATA_SECTION_ASM_OP "\t.data"
2986
2987 #if defined CRT_BEGIN || defined CRT_END
2988 /* Arrange for TEXT_SECTION_ASM_OP to be a compile-time constant. */
2989 # undef TEXT_SECTION_ASM_OP
2990 # if __SHMEDIA__ == 1 && __SH5__ == 32
2991 # define TEXT_SECTION_ASM_OP "\t.section\t.text..SHmedia32,\"ax\""
2992 # else
2993 # define TEXT_SECTION_ASM_OP "\t.text"
2994 # endif
2995 #endif
2996
2997
2998 /* If defined, a C expression whose value is a string containing the
2999 assembler operation to identify the following data as
3000 uninitialized global data. If not defined, and neither
3001 `ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined,
3002 uninitialized global data will be output in the data section if
3003 `-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be
3004 used. */
3005 #ifndef BSS_SECTION_ASM_OP
3006 #define BSS_SECTION_ASM_OP "\t.section\t.bss"
3007 #endif
3008
3009 /* Like `ASM_OUTPUT_BSS' except takes the required alignment as a
3010 separate, explicit argument. If you define this macro, it is used
3011 in place of `ASM_OUTPUT_BSS', and gives you more flexibility in
3012 handling the required alignment of the variable. The alignment is
3013 specified as the number of bits.
3014
3015 Try to use function `asm_output_aligned_bss' defined in file
3016 `varasm.c' when defining this macro. */
3017 #ifndef ASM_OUTPUT_ALIGNED_BSS
3018 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
3019 asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
3020 #endif
3021
3022 /* Define this so that jump tables go in same section as the current function,
3023 which could be text or it could be a user defined section. */
3024 #define JUMP_TABLES_IN_TEXT_SECTION 1
3025
3026 #undef DO_GLOBAL_CTORS_BODY
3027 #define DO_GLOBAL_CTORS_BODY \
3028 { \
3029 typedef (*pfunc)(); \
3030 extern pfunc __ctors[]; \
3031 extern pfunc __ctors_end[]; \
3032 pfunc *p; \
3033 for (p = __ctors_end; p > __ctors; ) \
3034 { \
3035 (*--p)(); \
3036 } \
3037 }
3038
3039 #undef DO_GLOBAL_DTORS_BODY
3040 #define DO_GLOBAL_DTORS_BODY \
3041 { \
3042 typedef (*pfunc)(); \
3043 extern pfunc __dtors[]; \
3044 extern pfunc __dtors_end[]; \
3045 pfunc *p; \
3046 for (p = __dtors; p < __dtors_end; p++) \
3047 { \
3048 (*p)(); \
3049 } \
3050 }
3051
3052 #define ASM_OUTPUT_REG_PUSH(file, v) \
3053 { \
3054 if (TARGET_SHMEDIA) \
3055 { \
3056 fprintf ((file), "\taddi.l\tr15,-8,r15\n"); \
3057 fprintf ((file), "\tst.q\tr15,0,r%d\n", (v)); \
3058 } \
3059 else \
3060 fprintf ((file), "\tmov.l\tr%d,@-r15\n", (v)); \
3061 }
3062
3063 #define ASM_OUTPUT_REG_POP(file, v) \
3064 { \
3065 if (TARGET_SHMEDIA) \
3066 { \
3067 fprintf ((file), "\tld.q\tr15,0,r%d\n", (v)); \
3068 fprintf ((file), "\taddi.l\tr15,8,r15\n"); \
3069 } \
3070 else \
3071 fprintf ((file), "\tmov.l\t@r15+,r%d\n", (v)); \
3072 }
3073
3074 /* DBX register number for a given compiler register number. */
3075 /* GDB has FPUL at 23 and FP0 at 25, so we must add one to all FP registers
3076 to match gdb. */
3077 /* svr4.h undefines this macro, yet we really want to use the same numbers
3078 for coff as for elf, so we go via another macro: SH_DBX_REGISTER_NUMBER. */
3079 /* expand_builtin_init_dwarf_reg_sizes uses this to test if a
3080 register exists, so we should return -1 for invalid register numbers. */
3081 #define DBX_REGISTER_NUMBER(REGNO) SH_DBX_REGISTER_NUMBER (REGNO)
3082
3083 /* SHcompact PR_REG used to use the encoding 241, and SHcompact FP registers
3084 used to use the encodings 245..260, but that doesn't make sense:
3085 PR_REG and PR_MEDIA_REG are actually the same register, and likewise
3086 the FP registers stay the same when switching between compact and media
3087 mode. Hence, we also need to use the same dwarf frame columns.
3088 Likewise, we need to support unwind information for SHmedia registers
3089 even in compact code. */
3090 #define SH_DBX_REGISTER_NUMBER(REGNO) \
3091 (IN_RANGE ((REGNO), \
3092 (unsigned HOST_WIDE_INT) FIRST_GENERAL_REG, \
3093 FIRST_GENERAL_REG + (TARGET_SH5 ? 63U :15U)) \
3094 ? ((unsigned) (REGNO) - FIRST_GENERAL_REG) \
3095 : ((int) (REGNO) >= FIRST_FP_REG \
3096 && ((int) (REGNO) \
3097 <= (FIRST_FP_REG + \
3098 ((TARGET_SH5 && TARGET_FPU_ANY) ? 63 : TARGET_SH2E ? 15 : -1)))) \
3099 ? ((unsigned) (REGNO) - FIRST_FP_REG \
3100 + (TARGET_SH5 ? 77 : 25)) \
3101 : XD_REGISTER_P (REGNO) \
3102 ? ((unsigned) (REGNO) - FIRST_XD_REG + (TARGET_SH5 ? 289 : 87)) \
3103 : TARGET_REGISTER_P (REGNO) \
3104 ? ((unsigned) (REGNO) - FIRST_TARGET_REG + 68) \
3105 : (REGNO) == PR_REG \
3106 ? (TARGET_SH5 ? 18 : 17) \
3107 : (REGNO) == PR_MEDIA_REG \
3108 ? (TARGET_SH5 ? 18 : (unsigned) -1) \
3109 : (REGNO) == T_REG \
3110 ? (TARGET_SH5 ? 242 : 18) \
3111 : (REGNO) == GBR_REG \
3112 ? (TARGET_SH5 ? 238 : 19) \
3113 : (REGNO) == MACH_REG \
3114 ? (TARGET_SH5 ? 239 : 20) \
3115 : (REGNO) == MACL_REG \
3116 ? (TARGET_SH5 ? 240 : 21) \
3117 : (REGNO) == FPUL_REG \
3118 ? (TARGET_SH5 ? 244 : 23) \
3119 : (unsigned) -1)
3120
3121 /* This is how to output a reference to a symbol_ref. On SH5,
3122 references to non-code symbols must be preceded by `datalabel'. */
3123 #define ASM_OUTPUT_SYMBOL_REF(FILE,SYM) \
3124 do \
3125 { \
3126 if (TARGET_SH5 && !SYMBOL_REF_FUNCTION_P (SYM)) \
3127 fputs ("datalabel ", (FILE)); \
3128 assemble_name ((FILE), XSTR ((SYM), 0)); \
3129 } \
3130 while (0)
3131
3132 /* This is how to output an assembler line
3133 that says to advance the location counter
3134 to a multiple of 2**LOG bytes. */
3135
3136 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
3137 if ((LOG) != 0) \
3138 fprintf ((FILE), "\t.align %d\n", (LOG))
3139
3140 /* Globalizing directive for a label. */
3141 #define GLOBAL_ASM_OP "\t.global\t"
3142
3143 /* #define ASM_OUTPUT_CASE_END(STREAM,NUM,TABLE) */
3144
3145 /* Output a relative address table. */
3146
3147 #define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM,BODY,VALUE,REL) \
3148 switch (GET_MODE (BODY)) \
3149 { \
3150 case SImode: \
3151 if (TARGET_SH5) \
3152 { \
3153 asm_fprintf ((STREAM), "\t.long\t%LL%d-datalabel %LL%d\n", \
3154 (VALUE), (REL)); \
3155 break; \
3156 } \
3157 asm_fprintf ((STREAM), "\t.long\t%LL%d-%LL%d\n", (VALUE),(REL)); \
3158 break; \
3159 case HImode: \
3160 if (TARGET_SH5) \
3161 { \
3162 asm_fprintf ((STREAM), "\t.word\t%LL%d-datalabel %LL%d\n", \
3163 (VALUE), (REL)); \
3164 break; \
3165 } \
3166 asm_fprintf ((STREAM), "\t.word\t%LL%d-%LL%d\n", (VALUE),(REL)); \
3167 break; \
3168 case QImode: \
3169 if (TARGET_SH5) \
3170 { \
3171 asm_fprintf ((STREAM), "\t.byte\t%LL%d-datalabel %LL%d\n", \
3172 (VALUE), (REL)); \
3173 break; \
3174 } \
3175 asm_fprintf ((STREAM), "\t.byte\t%LL%d-%LL%d\n", (VALUE),(REL)); \
3176 break; \
3177 default: \
3178 break; \
3179 }
3180
3181 /* Output an absolute table element. */
3182
3183 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM,VALUE) \
3184 if (! optimize || TARGET_BIGTABLE) \
3185 asm_fprintf ((STREAM), "\t.long\t%LL%d\n", (VALUE)); \
3186 else \
3187 asm_fprintf ((STREAM), "\t.word\t%LL%d\n", (VALUE));
3188
3189 \f
3190 /* A C statement to be executed just prior to the output of
3191 assembler code for INSN, to modify the extracted operands so
3192 they will be output differently.
3193
3194 Here the argument OPVEC is the vector containing the operands
3195 extracted from INSN, and NOPERANDS is the number of elements of
3196 the vector which contain meaningful data for this insn.
3197 The contents of this vector are what will be used to convert the insn
3198 template into assembler code, so you can change the assembler output
3199 by changing the contents of the vector. */
3200
3201 #define FINAL_PRESCAN_INSN(INSN, OPVEC, NOPERANDS) \
3202 final_prescan_insn ((INSN), (OPVEC), (NOPERANDS))
3203
3204 /* Print operand X (an rtx) in assembler syntax to file FILE.
3205 CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified.
3206 For `%' followed by punctuation, CODE is the punctuation and X is null. */
3207
3208 #define PRINT_OPERAND(STREAM, X, CODE) print_operand ((STREAM), (X), (CODE))
3209
3210 /* Print a memory address as an operand to reference that memory location. */
3211
3212 #define PRINT_OPERAND_ADDRESS(STREAM,X) print_operand_address ((STREAM), (X))
3213
3214 #define PRINT_OPERAND_PUNCT_VALID_P(CHAR) \
3215 ((CHAR) == '.' || (CHAR) == '#' || (CHAR) == '@' || (CHAR) == ',' \
3216 || (CHAR) == '$' || (CHAR) == '\'' || (CHAR) == '>')
3217
3218 /* Recognize machine-specific patterns that may appear within
3219 constants. Used for PIC-specific UNSPECs. */
3220 #define OUTPUT_ADDR_CONST_EXTRA(STREAM, X, FAIL) \
3221 do \
3222 if (GET_CODE (X) == UNSPEC && XVECLEN ((X), 0) == 1) \
3223 { \
3224 switch (XINT ((X), 1)) \
3225 { \
3226 case UNSPEC_DATALABEL: \
3227 fputs ("datalabel ", (STREAM)); \
3228 output_addr_const ((STREAM), XVECEXP ((X), 0, 0)); \
3229 break; \
3230 case UNSPEC_PIC: \
3231 /* GLOBAL_OFFSET_TABLE or local symbols, no suffix. */ \
3232 output_addr_const ((STREAM), XVECEXP ((X), 0, 0)); \
3233 break; \
3234 case UNSPEC_GOT: \
3235 output_addr_const ((STREAM), XVECEXP ((X), 0, 0)); \
3236 fputs ("@GOT", (STREAM)); \
3237 break; \
3238 case UNSPEC_GOTOFF: \
3239 output_addr_const ((STREAM), XVECEXP ((X), 0, 0)); \
3240 fputs ("@GOTOFF", (STREAM)); \
3241 break; \
3242 case UNSPEC_PLT: \
3243 output_addr_const ((STREAM), XVECEXP ((X), 0, 0)); \
3244 fputs ("@PLT", (STREAM)); \
3245 break; \
3246 case UNSPEC_GOTPLT: \
3247 output_addr_const ((STREAM), XVECEXP ((X), 0, 0)); \
3248 fputs ("@GOTPLT", (STREAM)); \
3249 break; \
3250 case UNSPEC_DTPOFF: \
3251 output_addr_const ((STREAM), XVECEXP ((X), 0, 0)); \
3252 fputs ("@DTPOFF", (STREAM)); \
3253 break; \
3254 case UNSPEC_GOTTPOFF: \
3255 output_addr_const ((STREAM), XVECEXP ((X), 0, 0)); \
3256 fputs ("@GOTTPOFF", (STREAM)); \
3257 break; \
3258 case UNSPEC_TPOFF: \
3259 output_addr_const ((STREAM), XVECEXP ((X), 0, 0)); \
3260 fputs ("@TPOFF", (STREAM)); \
3261 break; \
3262 case UNSPEC_CALLER: \
3263 { \
3264 char name[32]; \
3265 /* LPCS stands for Label for PIC Call Site. */ \
3266 ASM_GENERATE_INTERNAL_LABEL \
3267 (name, "LPCS", INTVAL (XVECEXP ((X), 0, 0))); \
3268 assemble_name ((STREAM), name); \
3269 } \
3270 break; \
3271 default: \
3272 goto FAIL; \
3273 } \
3274 break; \
3275 } \
3276 else \
3277 goto FAIL; \
3278 while (0)
3279
3280 \f
3281 extern struct rtx_def *sh_compare_op0;
3282 extern struct rtx_def *sh_compare_op1;
3283
3284 /* Which processor to schedule for. The elements of the enumeration must
3285 match exactly the cpu attribute in the sh.md file. */
3286
3287 enum processor_type {
3288 PROCESSOR_SH1,
3289 PROCESSOR_SH2,
3290 PROCESSOR_SH2E,
3291 PROCESSOR_SH2A,
3292 PROCESSOR_SH3,
3293 PROCESSOR_SH3E,
3294 PROCESSOR_SH4,
3295 PROCESSOR_SH4A,
3296 PROCESSOR_SH5
3297 };
3298
3299 #define sh_cpu_attr ((enum attr_cpu)sh_cpu)
3300 extern enum processor_type sh_cpu;
3301
3302 extern int optimize; /* needed for gen_casesi. */
3303
3304 enum mdep_reorg_phase_e
3305 {
3306 SH_BEFORE_MDEP_REORG,
3307 SH_INSERT_USES_LABELS,
3308 SH_SHORTEN_BRANCHES0,
3309 SH_FIXUP_PCLOAD,
3310 SH_SHORTEN_BRANCHES1,
3311 SH_AFTER_MDEP_REORG
3312 };
3313
3314 extern enum mdep_reorg_phase_e mdep_reorg_phase;
3315
3316 /* Handle Renesas compiler's pragmas. */
3317 #define REGISTER_TARGET_PRAGMAS() do { \
3318 c_register_pragma (0, "interrupt", sh_pr_interrupt); \
3319 c_register_pragma (0, "trapa", sh_pr_trapa); \
3320 c_register_pragma (0, "nosave_low_regs", sh_pr_nosave_low_regs); \
3321 } while (0)
3322
3323 extern tree sh_deferred_function_attributes;
3324 extern tree *sh_deferred_function_attributes_tail;
3325
3326 /* Set when processing a function with interrupt attribute. */
3327
3328 extern int current_function_interrupt;
3329
3330 \f
3331 /* Instructions with unfilled delay slots take up an
3332 extra two bytes for the nop in the delay slot.
3333 sh-dsp parallel processing insns are four bytes long. */
3334
3335 #define ADJUST_INSN_LENGTH(X, LENGTH) \
3336 (LENGTH) += sh_insn_length_adjustment (X);
3337 \f
3338 /* Define this macro if it is advisable to hold scalars in registers
3339 in a wider mode than that declared by the program. In such cases,
3340 the value is constrained to be within the bounds of the declared
3341 type, but kept valid in the wider mode. The signedness of the
3342 extension may differ from that of the type.
3343
3344 Leaving the unsignedp unchanged gives better code than always setting it
3345 to 0. This is despite the fact that we have only signed char and short
3346 load instructions. */
3347 #define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \
3348 if (GET_MODE_CLASS (MODE) == MODE_INT \
3349 && GET_MODE_SIZE (MODE) < 4/* ! UNITS_PER_WORD */)\
3350 (UNSIGNEDP) = ((MODE) == SImode ? 0 : (UNSIGNEDP)), \
3351 (MODE) = (TARGET_SH1 ? SImode \
3352 : TARGET_SHMEDIA32 ? SImode : DImode);
3353
3354 #define MAX_FIXED_MODE_SIZE (TARGET_SH5 ? 128 : 64)
3355
3356 #define SIDI_OFF (TARGET_LITTLE_ENDIAN ? 0 : 4)
3357
3358 /* ??? Define ACCUMULATE_OUTGOING_ARGS? This is more efficient than pushing
3359 and popping arguments. However, we do have push/pop instructions, and
3360 rather limited offsets (4 bits) in load/store instructions, so it isn't
3361 clear if this would give better code. If implemented, should check for
3362 compatibility problems. */
3363
3364 #define SH_DYNAMIC_SHIFT_COST \
3365 (TARGET_HARD_SH4 ? 1 : TARGET_SH3 ? (TARGET_SMALLCODE ? 1 : 2) : 20)
3366
3367
3368 #define NUM_MODES_FOR_MODE_SWITCHING { FP_MODE_NONE }
3369
3370 #define OPTIMIZE_MODE_SWITCHING(ENTITY) (TARGET_SH4 || TARGET_SH2A_DOUBLE)
3371
3372 #define ACTUAL_NORMAL_MODE(ENTITY) \
3373 (TARGET_FPU_SINGLE ? FP_MODE_SINGLE : FP_MODE_DOUBLE)
3374
3375 #define NORMAL_MODE(ENTITY) \
3376 (sh_cfun_interrupt_handler_p () \
3377 ? (TARGET_FMOVD ? FP_MODE_DOUBLE : FP_MODE_NONE) \
3378 : ACTUAL_NORMAL_MODE (ENTITY))
3379
3380 #define MODE_ENTRY(ENTITY) NORMAL_MODE (ENTITY)
3381
3382 #define MODE_EXIT(ENTITY) \
3383 (sh_cfun_attr_renesas_p () ? FP_MODE_NONE : NORMAL_MODE (ENTITY))
3384
3385 #define EPILOGUE_USES(REGNO) ((TARGET_SH2E || TARGET_SH4) \
3386 && (REGNO) == FPSCR_REG)
3387
3388 #define MODE_NEEDED(ENTITY, INSN) \
3389 (recog_memoized (INSN) >= 0 \
3390 ? get_attr_fp_mode (INSN) \
3391 : FP_MODE_NONE)
3392
3393 #define MODE_AFTER(MODE, INSN) \
3394 (TARGET_HITACHI \
3395 && recog_memoized (INSN) >= 0 \
3396 && get_attr_fp_set (INSN) != FP_SET_NONE \
3397 ? (int) get_attr_fp_set (INSN) \
3398 : (MODE))
3399
3400 #define MODE_PRIORITY_TO_MODE(ENTITY, N) \
3401 ((TARGET_FPU_SINGLE != 0) ^ (N) ? FP_MODE_SINGLE : FP_MODE_DOUBLE)
3402
3403 #define EMIT_MODE_SET(ENTITY, MODE, HARD_REGS_LIVE) \
3404 fpscr_set_from_mem ((MODE), (HARD_REGS_LIVE))
3405
3406 #define MD_CAN_REDIRECT_BRANCH(INSN, SEQ) \
3407 sh_can_redirect_branch ((INSN), (SEQ))
3408
3409 #define DWARF_FRAME_RETURN_COLUMN \
3410 (TARGET_SH5 ? DWARF_FRAME_REGNUM (PR_MEDIA_REG) : DWARF_FRAME_REGNUM (PR_REG))
3411
3412 #define EH_RETURN_DATA_REGNO(N) \
3413 ((N) < 4 ? (N) + (TARGET_SH5 ? 2U : 4U) : INVALID_REGNUM)
3414
3415 #define EH_RETURN_STACKADJ_REGNO STATIC_CHAIN_REGNUM
3416 #define EH_RETURN_STACKADJ_RTX gen_rtx_REG (Pmode, EH_RETURN_STACKADJ_REGNO)
3417
3418 /* We have to distinguish between code and data, so that we apply
3419 datalabel where and only where appropriate. Use sdataN for data. */
3420 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL) \
3421 ((flag_pic && (GLOBAL) ? DW_EH_PE_indirect : 0) \
3422 | (flag_pic ? DW_EH_PE_pcrel : DW_EH_PE_absptr) \
3423 | ((CODE) ? 0 : (TARGET_SHMEDIA64 ? DW_EH_PE_sdata8 : DW_EH_PE_sdata4)))
3424
3425 /* Handle special EH pointer encodings. Absolute, pc-relative, and
3426 indirect are handled automatically. */
3427 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(FILE, ENCODING, SIZE, ADDR, DONE) \
3428 do { \
3429 if (((ENCODING) & 0xf) != DW_EH_PE_sdata4 \
3430 && ((ENCODING) & 0xf) != DW_EH_PE_sdata8) \
3431 { \
3432 gcc_assert (GET_CODE (ADDR) == SYMBOL_REF); \
3433 SYMBOL_REF_FLAGS (ADDR) |= SYMBOL_FLAG_FUNCTION; \
3434 if (0) goto DONE; \
3435 } \
3436 } while (0)
3437
3438 #if (defined CRT_BEGIN || defined CRT_END) && ! __SHMEDIA__
3439 /* SH constant pool breaks the devices in crtstuff.c to control section
3440 in where code resides. We have to write it as asm code. */
3441 #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
3442 asm (SECTION_OP "\n\
3443 mov.l 1f,r1\n\
3444 mova 2f,r0\n\
3445 braf r1\n\
3446 lds r0,pr\n\
3447 0: .p2align 2\n\
3448 1: .long " USER_LABEL_PREFIX #FUNC " - 0b\n\
3449 2:\n" TEXT_SECTION_ASM_OP);
3450 #endif /* (defined CRT_BEGIN || defined CRT_END) && ! __SHMEDIA__ */
3451
3452 #define SIMULTANEOUS_PREFETCHES 2
3453
3454 /* FIXME: middle-end support for highpart optimizations is missing. */
3455 #define high_life_started reload_in_progress
3456
3457 #endif /* ! GCC_SH_H */
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