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 Free Software Foundation, Inc.
4 Contributed by Steve Chamberlain (sac@cygnus.com).
5 Improved by Jim Wilson (wilson@cygnus.com).
7 This file is part of GCC.
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)
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.
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, 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
27 #define TARGET_VERSION \
28 fputs (" (Hitachi SH)", stderr);
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;
35 #define TARGET_CPU_CPP_BUILTINS() \
37 builtin_define ("__sh__"); \
38 builtin_assert ("cpu=sh"); \
39 builtin_assert ("machine=sh"); \
40 switch ((int) sh_cpu) \
43 builtin_define ("__sh1__"); \
46 builtin_define ("__sh2__"); \
48 case PROCESSOR_SH2E: \
49 builtin_define ("__SH2E__"); \
52 builtin_define ("__sh3__"); \
53 builtin_define ("__SH3__"); \
54 if (TARGET_HARD_SH4) \
55 builtin_define ("__SH4_NOFPU__"); \
57 case PROCESSOR_SH3E: \
58 builtin_define (TARGET_HARD_SH4 ? "__SH4_SINGLE_ONLY__" : "__SH3E__"); \
61 builtin_define (TARGET_FPU_SINGLE ? "__SH4_SINGLE__" : "__SH4__"); \
65 builtin_define_with_value ("__SH5__", \
66 TARGET_SHMEDIA64 ? "64" : "32", 0); \
67 builtin_define_with_value ("__SHMEDIA__", \
68 TARGET_SHMEDIA ? "1" : "0", 0); \
69 if (! TARGET_FPU_DOUBLE) \
70 builtin_define ("__SH4_NOFPU__"); \
74 builtin_define ("__HITACHI__"); \
75 builtin_define (TARGET_LITTLE_ENDIAN \
76 ? "__LITTLE_ENDIAN__" : "__BIG_ENDIAN__"); \
79 builtin_define ("__pic__"); \
80 builtin_define ("__PIC__"); \
84 /* We can not debug without a frame pointer. */
85 /* #define CAN_DEBUG_WITHOUT_FP */
87 #define CONDITIONAL_REGISTER_USAGE do \
90 for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno ++) \
91 if (! VALID_REGISTER_P (regno)) \
92 fixed_regs[regno] = call_used_regs[regno] = 1; \
93 /* R8 and R9 are call-clobbered on SH5, but not on earlier SH ABIs. */ \
95 call_used_regs[FIRST_GENERAL_REG + 8] \
96 = call_used_regs[FIRST_GENERAL_REG + 9] = 1; \
99 regno_reg_class[FIRST_GENERAL_REG] = GENERAL_REGS; \
100 CLEAR_HARD_REG_SET (reg_class_contents[FP0_REGS]); \
101 regno_reg_class[FIRST_FP_REG] = FP_REGS; \
104 fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
105 /* Renesas saves and restores mac registers on call. */ \
106 if (TARGET_HITACHI && ! TARGET_NOMACSAVE) \
108 call_used_regs[MACH_REG] = 0; \
109 call_used_regs[MACL_REG] = 0; \
111 for (regno = FIRST_FP_REG + (TARGET_LITTLE_ENDIAN != 0); \
112 regno <= LAST_FP_REG; regno += 2) \
113 SET_HARD_REG_BIT (reg_class_contents[DF_HI_REGS], regno); \
114 if (TARGET_SHMEDIA) \
116 for (regno = FIRST_TARGET_REG; regno <= LAST_TARGET_REG; regno ++)\
117 if (! fixed_regs[regno] && call_used_regs[regno]) \
118 SET_HARD_REG_BIT (reg_class_contents[SIBCALL_REGS], regno); \
121 for (regno = FIRST_GENERAL_REG; regno <= LAST_GENERAL_REG; regno++) \
122 if (! fixed_regs[regno] && call_used_regs[regno]) \
123 SET_HARD_REG_BIT (reg_class_contents[SIBCALL_REGS], regno); \
126 /* ??? Need to write documentation for all SH options and add it to the
129 /* Run-time compilation parameters selecting different hardware subsets. */
131 extern int target_flags;
132 #define ISIZE_BIT (1<<1)
133 #define DALIGN_BIT (1<<6)
134 #define SH1_BIT (1<<8)
135 #define SH2_BIT (1<<9)
136 #define SH3_BIT (1<<10)
137 #define SH_E_BIT (1<<11)
138 #define HARD_SH4_BIT (1<<5)
139 #define FPU_SINGLE_BIT (1<<7)
140 #define SH4_BIT (1<<12)
141 #define FMOVD_BIT (1<<4)
142 #define SH5_BIT (1<<0)
143 #define SPACE_BIT (1<<13)
144 #define BIGTABLE_BIT (1<<14)
145 #define RELAX_BIT (1<<15)
146 #define USERMODE_BIT (1<<16)
147 #define HITACHI_BIT (1<<22)
148 #define NOMACSAVE_BIT (1<<23)
149 #define PREFERGOT_BIT (1<<24)
150 #define PADSTRUCT_BIT (1<<28)
151 #define LITTLE_ENDIAN_BIT (1<<29)
152 #define IEEE_BIT (1<<30)
153 #define SAVE_ALL_TR_BIT (1<<2)
155 /* Nonzero if this is an ELF target - compile time only */
158 /* Nonzero if we should dump out instruction size info. */
159 #define TARGET_DUMPISIZE (target_flags & ISIZE_BIT)
161 /* Nonzero to align doubles on 64 bit boundaries. */
162 #define TARGET_ALIGN_DOUBLE (target_flags & DALIGN_BIT)
164 /* Nonzero if we should generate code using type 1 insns. */
165 #define TARGET_SH1 (target_flags & SH1_BIT)
167 /* Nonzero if we should generate code using type 2 insns. */
168 #define TARGET_SH2 (target_flags & SH2_BIT)
170 /* Nonzero if we should generate code using type 2E insns. */
171 #define TARGET_SH2E ((target_flags & SH_E_BIT) && TARGET_SH2)
173 /* Nonzero if we should generate code using type 3 insns. */
174 #define TARGET_SH3 (target_flags & SH3_BIT)
176 /* Nonzero if we should generate code using type 3E insns. */
177 #define TARGET_SH3E ((target_flags & SH_E_BIT) && TARGET_SH3)
179 /* Nonzero if the cache line size is 32. */
180 #define TARGET_CACHE32 (target_flags & HARD_SH4_BIT || TARGET_SH5)
182 /* Nonzero if we schedule for a superscalar implementation. */
183 #define TARGET_SUPERSCALAR (target_flags & HARD_SH4_BIT)
185 /* Nonzero if the target has separate instruction and data caches. */
186 #define TARGET_HARVARD (target_flags & HARD_SH4_BIT)
188 /* Nonzero if compiling for SH4 hardware (to be used for insn costs etc.) */
189 #define TARGET_HARD_SH4 (target_flags & HARD_SH4_BIT)
191 /* Nonzero if the default precision of th FPU is single */
192 #define TARGET_FPU_SINGLE (target_flags & FPU_SINGLE_BIT)
194 /* Nonzero if a double-precision FPU is available. */
195 #define TARGET_FPU_DOUBLE (target_flags & SH4_BIT)
197 /* Nonzero if an FPU is available. */
198 #define TARGET_FPU_ANY (TARGET_SH2E || TARGET_FPU_DOUBLE)
200 /* Nonzero if we should generate code using type 4 insns. */
201 #define TARGET_SH4 ((target_flags & SH4_BIT) && (target_flags & SH1_BIT))
203 /* Nonzero if we should generate code for a SH5 CPU (either ISA). */
204 #define TARGET_SH5 (target_flags & SH5_BIT)
206 /* Nonzero if we should generate code using the SHcompact instruction
207 set and 32-bit ABI. */
208 #define TARGET_SHCOMPACT (TARGET_SH5 && TARGET_SH1)
210 /* Nonzero if we should generate code using the SHmedia instruction
212 #define TARGET_SHMEDIA (TARGET_SH5 && ! TARGET_SH1)
214 /* Nonzero if we should generate code using the SHmedia ISA and 32-bit
216 #define TARGET_SHMEDIA32 (TARGET_SH5 && ! TARGET_SH1 \
217 && (target_flags & SH_E_BIT))
219 /* Nonzero if we should generate code using the SHmedia ISA and 64-bit
221 #define TARGET_SHMEDIA64 (TARGET_SH5 && ! TARGET_SH1 \
222 && ! (target_flags & SH_E_BIT))
224 /* Nonzero if we should generate code using SHmedia FPU instructions. */
225 #define TARGET_SHMEDIA_FPU (TARGET_SHMEDIA && TARGET_FPU_DOUBLE)
226 /* Nonzero if we should generate fmovd. */
227 #define TARGET_FMOVD (target_flags & FMOVD_BIT)
229 /* Nonzero if we respect NANs. */
230 #define TARGET_IEEE (target_flags & IEEE_BIT)
232 /* Nonzero if we should generate smaller code rather than faster code. */
233 #define TARGET_SMALLCODE (target_flags & SPACE_BIT)
235 /* Nonzero to use long jump tables. */
236 #define TARGET_BIGTABLE (target_flags & BIGTABLE_BIT)
238 /* Nonzero to generate pseudo-ops needed by the assembler and linker
239 to do function call relaxing. */
240 #define TARGET_RELAX (target_flags & RELAX_BIT)
242 /* Nonzero if using Renesas's calling convention. */
243 #define TARGET_HITACHI (target_flags & HITACHI_BIT)
245 /* Nonzero if not saving macl/mach when using -mhitachi */
246 #define TARGET_NOMACSAVE (target_flags & NOMACSAVE_BIT)
248 /* Nonzero if padding structures to a multiple of 4 bytes. This is
249 incompatible with Renesas's compiler, and gives unusual structure layouts
250 which confuse programmers.
251 ??? This option is not useful, but is retained in case there are people
252 who are still relying on it. It may be deleted in the future. */
253 #define TARGET_PADSTRUCT (target_flags & PADSTRUCT_BIT)
255 /* Nonzero if generating code for a little endian SH. */
256 #define TARGET_LITTLE_ENDIAN (target_flags & LITTLE_ENDIAN_BIT)
258 /* Nonzero if we should do everything in userland. */
259 #define TARGET_USERMODE (target_flags & USERMODE_BIT)
261 /* Nonzero if we should prefer @GOT calls when generating PIC. */
262 #define TARGET_PREFERGOT (target_flags & PREFERGOT_BIT)
264 #define TARGET_SAVE_ALL_TARGET_REGS (target_flags & SAVE_ALL_TR_BIT)
266 #define SELECT_SH1 (SH1_BIT)
267 #define SELECT_SH2 (SH2_BIT | SELECT_SH1)
268 #define SELECT_SH2E (SH_E_BIT | SH2_BIT | SH1_BIT | FPU_SINGLE_BIT)
269 #define SELECT_SH3 (SH3_BIT | SELECT_SH2)
270 #define SELECT_SH3E (SH_E_BIT | FPU_SINGLE_BIT | SELECT_SH3)
271 #define SELECT_SH4_NOFPU (HARD_SH4_BIT | SELECT_SH3)
272 #define SELECT_SH4_SINGLE_ONLY (HARD_SH4_BIT | SELECT_SH3E)
273 #define SELECT_SH4 (SH4_BIT | SH_E_BIT | HARD_SH4_BIT | SELECT_SH3)
274 #define SELECT_SH4_SINGLE (FPU_SINGLE_BIT | SELECT_SH4)
275 #define SELECT_SH5_64 (SH5_BIT | SH4_BIT)
276 #define SELECT_SH5_64_NOFPU (SH5_BIT)
277 #define SELECT_SH5_32 (SH5_BIT | SH4_BIT | SH_E_BIT)
278 #define SELECT_SH5_32_NOFPU (SH5_BIT | SH_E_BIT)
279 #define SELECT_SH5_COMPACT (SH5_BIT | SH4_BIT | SELECT_SH3E)
280 #define SELECT_SH5_COMPACT_NOFPU (SH5_BIT | SELECT_SH3)
282 /* Reset all target-selection flags. */
283 #define TARGET_NONE -(SH1_BIT | SH2_BIT | SH3_BIT | SH_E_BIT | SH4_BIT \
284 | HARD_SH4_BIT | FPU_SINGLE_BIT | SH5_BIT)
286 #define TARGET_SWITCHES \
287 { {"1", TARGET_NONE, "" }, \
288 {"1", SELECT_SH1, "Generate SH1 code" }, \
289 {"2", TARGET_NONE, "" }, \
290 {"2", SELECT_SH2, "Generate SH2 code" }, \
291 {"2e", TARGET_NONE, "" }, \
292 {"2e", SELECT_SH2E, "Generate SH2e code" }, \
293 {"3", TARGET_NONE, "" }, \
294 {"3", SELECT_SH3, "Generate SH3 code" }, \
295 {"3e", TARGET_NONE, "" }, \
296 {"3e", SELECT_SH3E, "Generate SH3e code" }, \
297 {"4-single-only", TARGET_NONE, "" }, \
298 {"4-single-only", SELECT_SH4_SINGLE_ONLY, "Generate only single-precision SH4 code" }, \
299 {"4-single", TARGET_NONE, "" }, \
300 {"4-single", SELECT_SH4_SINGLE, "Generate default single-precision SH4 code" }, \
301 {"4-nofpu", TARGET_NONE, "" }, \
302 {"4-nofpu", SELECT_SH4_NOFPU, "Generate SH4 FPU-less code" }, \
303 {"4", TARGET_NONE, "" }, \
304 {"4", SELECT_SH4, "Generate SH4 code" }, \
305 {"5-64media", TARGET_NONE, "" }, \
306 {"5-64media", SELECT_SH5_64, "Generate 64-bit SHmedia code" }, \
307 {"5-64media-nofpu", TARGET_NONE, "" }, \
308 {"5-64media-nofpu", SELECT_SH5_64_NOFPU, "Generate 64-bit FPU-less SHmedia code" }, \
309 {"5-32media", TARGET_NONE, "" }, \
310 {"5-32media", SELECT_SH5_32, "Generate 32-bit SHmedia code" }, \
311 {"5-32media-nofpu", TARGET_NONE, "" }, \
312 {"5-32media-nofpu", SELECT_SH5_32_NOFPU, "Generate 32-bit FPU-less SHmedia code" }, \
313 {"5-compact", TARGET_NONE, "" }, \
314 {"5-compact", SELECT_SH5_COMPACT, "Generate SHcompact code" }, \
315 {"5-compact-nofpu", TARGET_NONE, "" }, \
316 {"5-compact-nofpu", SELECT_SH5_COMPACT_NOFPU, "Generate FPU-less SHcompact code" }, \
317 {"b", -LITTLE_ENDIAN_BIT, "Generate code in big endian mode" }, \
318 {"bigtable", BIGTABLE_BIT, "Generate 32-bit offsets in switch tables" }, \
319 {"dalign", DALIGN_BIT, "Aligns doubles at 64-bit boundaries" }, \
320 {"fmovd", FMOVD_BIT, "" }, \
321 {"hitachi", HITACHI_BIT, "Follow Renesas (formerly Hitachi) / SuperH calling conventions" }, \
322 {"renesas", HITACHI_BIT, "Follow Renesas (formerly Hitachi) / SuperH calling conventions" }, \
323 {"nomacsave", NOMACSAVE_BIT, "Mark MAC register as call-clobbered" }, \
324 {"ieee", IEEE_BIT, "Increase the IEEE compliance for floating-point code" }, \
325 {"isize", ISIZE_BIT, "" }, \
326 {"l", LITTLE_ENDIAN_BIT, "Generate code in little endian mode" }, \
327 {"no-ieee", -IEEE_BIT, "" }, \
328 {"padstruct", PADSTRUCT_BIT, "" }, \
329 {"prefergot", PREFERGOT_BIT, "Emit function-calls using global offset table when generating PIC" }, \
330 {"relax", RELAX_BIT, "Shorten address references during linking" }, \
331 {"space", SPACE_BIT, "Deprecated. Use -Os instead" }, \
332 {"usermode", USERMODE_BIT, "Generate library function call to invalidate instruction cache entries after fixing trampoline" }, \
334 {"", TARGET_DEFAULT, "" } \
337 /* This are meant to be redefined in the host dependent files */
338 #define SUBTARGET_SWITCHES
340 /* This defaults us to big-endian. */
341 #ifndef TARGET_ENDIAN_DEFAULT
342 #define TARGET_ENDIAN_DEFAULT 0
345 #ifndef TARGET_CPU_DEFAULT
346 #define TARGET_CPU_DEFAULT SELECT_SH1
349 #define TARGET_DEFAULT (TARGET_CPU_DEFAULT|TARGET_ENDIAN_DEFAULT)
351 #define CPP_SPEC " %(subtarget_cpp_spec) "
353 #ifndef SUBTARGET_CPP_SPEC
354 #define SUBTARGET_CPP_SPEC ""
357 #ifndef SUBTARGET_EXTRA_SPECS
358 #define SUBTARGET_EXTRA_SPECS
361 #define EXTRA_SPECS \
362 { "subtarget_cpp_spec", SUBTARGET_CPP_SPEC }, \
363 { "link_emul_prefix", LINK_EMUL_PREFIX }, \
364 { "link_default_cpu_emul", LINK_DEFAULT_CPU_EMUL }, \
365 { "subtarget_link_emul_suffix", SUBTARGET_LINK_EMUL_SUFFIX }, \
366 { "subtarget_link_spec", SUBTARGET_LINK_SPEC }, \
367 { "subtarget_asm_endian_spec", SUBTARGET_ASM_ENDIAN_SPEC }, \
368 { "subtarget_asm_relax_spec", SUBTARGET_ASM_RELAX_SPEC }, \
369 { "subtarget_asm_isa_spec", SUBTARGET_ASM_ISA_SPEC }, \
370 SUBTARGET_EXTRA_SPECS
372 #if TARGET_CPU_DEFAULT & HARD_SH4_BIT
373 #define SUBTARGET_ASM_RELAX_SPEC "%{!m1:%{!m2:%{!m3*:%{!m5*:-isa=sh4}}}}"
375 #define SUBTARGET_ASM_RELAX_SPEC "%{m4*:-isa=sh4}"
378 #define SH_ASM_SPEC \
379 "%(subtarget_asm_endian_spec) %{mrelax:-relax %(subtarget_asm_relax_spec)}\
380 %(subtarget_asm_isa_spec)"
382 #define ASM_SPEC SH_ASM_SPEC
384 #ifndef SUBTARGET_ASM_ENDIAN_SPEC
385 #if TARGET_ENDIAN_DEFAULT == LITTLE_ENDIAN_BIT
386 #define SUBTARGET_ASM_ENDIAN_SPEC "%{mb:-big} %{!mb:-little}"
388 #define SUBTARGET_ASM_ENDIAN_SPEC "%{ml:-little} %{!ml:-big}"
392 #define SUBTARGET_ASM_ISA_SPEC ""
394 #define LINK_EMUL_PREFIX "sh%{ml:l}"
396 #if TARGET_CPU_DEFAULT & SH5_BIT
397 #if TARGET_CPU_DEFAULT & SH_E_BIT
398 #define LINK_DEFAULT_CPU_EMUL "32"
400 #define LINK_DEFAULT_CPU_EMUL "64"
401 #endif /* SH_E_BIT */
403 #define LINK_DEFAULT_CPU_EMUL ""
406 #define SUBTARGET_LINK_EMUL_SUFFIX ""
407 #define SUBTARGET_LINK_SPEC ""
409 /* svr4.h redefines LINK_SPEC inappropriately, so go via SH_LINK_SPEC,
410 so that we can undo the damage without code replication. */
411 #define LINK_SPEC SH_LINK_SPEC
413 #define SH_LINK_SPEC "\
414 -m %(link_emul_prefix)\
415 %{m5-compact*|m5-32media*:32}\
417 %{!m1:%{!m2:%{!m3*:%{!m4*:%{!m5*:%(link_default_cpu_emul)}}}}}\
418 %(subtarget_link_emul_suffix) \
419 %{mrelax:-relax} %(subtarget_link_spec)"
421 #define OPTIMIZATION_OPTIONS(LEVEL,SIZE) \
424 flag_omit_frame_pointer = -1; \
426 target_flags |= SPACE_BIT; \
427 if (TARGET_SHMEDIA && LEVEL > 1) \
429 flag_branch_target_load_optimize = 1; \
431 target_flags |= SAVE_ALL_TR_BIT; \
435 #define ASSEMBLER_DIALECT assembler_dialect
437 extern int assembler_dialect;
439 #define OVERRIDE_OPTIONS \
444 assembler_dialect = 0; \
455 assembler_dialect = 1; \
461 target_flags |= DALIGN_BIT; \
463 && ! (TARGET_SHCOMPACT && TARGET_LITTLE_ENDIAN)) \
464 target_flags |= FMOVD_BIT; \
465 if (TARGET_SHMEDIA) \
467 /* There are no delay slots on SHmedia. */ \
468 flag_delayed_branch = 0; \
469 /* Relaxation isn't yet supported for SHmedia */ \
470 target_flags &= ~RELAX_BIT; \
472 /* -fprofile-arcs needs a working libgcov . In unified tree \
473 configurations with newlib, this requires to configure with \
474 --with-newlib --with-headers. But there is no way to check \
475 here we have a working libgcov, so just assume that we have. */\
478 warning ("Profiling is not supported on this target."); \
479 profile_flag = profile_arc_flag = 0; \
484 /* Only the sh64-elf assembler fully supports .quad properly. */\
485 targetm.asm_out.aligned_op.di = NULL; \
486 targetm.asm_out.unaligned_op.di = NULL; \
489 reg_class_from_letter['e' - 'a'] = NO_REGS; \
491 for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++) \
492 if (! VALID_REGISTER_P (regno)) \
493 sh_register_names[regno][0] = '\0'; \
495 for (regno = 0; regno < ADDREGNAMES_SIZE; regno++) \
496 if (! VALID_REGISTER_P (ADDREGNAMES_REGNO (regno))) \
497 sh_additional_register_names[regno][0] = '\0'; \
499 if (flag_omit_frame_pointer < 0) \
501 /* The debugging information is sufficient, \
502 but gdb doesn't implement this yet */ \
504 flag_omit_frame_pointer \
505 = (PREFERRED_DEBUGGING_TYPE == DWARF_DEBUG \
506 || PREFERRED_DEBUGGING_TYPE == DWARF2_DEBUG); \
508 flag_omit_frame_pointer = 0; \
511 if (flag_pic && ! TARGET_PREFERGOT) \
512 flag_no_function_cse = 1; \
514 if (SMALL_REGISTER_CLASSES) \
516 /* Never run scheduling before reload, since that can \
517 break global alloc, and generates slower code anyway due \
518 to the pressure on R0. */ \
519 /* Enable sched1 for SH4; ready queue will be reordered by \
520 the target hooks when pressure is high. We can not do this for \
521 SH3 and lower as they give spill failures for R0. */ \
522 if (!TARGET_HARD_SH4) \
523 flag_schedule_insns = 0; \
526 if (align_loops == 0) \
527 align_loops = 1 << (TARGET_SH5 ? 3 : 2); \
528 if (align_jumps == 0) \
529 align_jumps = 1 << CACHE_LOG; \
530 else if (align_jumps < (TARGET_SHMEDIA ? 4 : 2)) \
531 align_jumps = TARGET_SHMEDIA ? 4 : 2; \
533 /* Allocation boundary (in *bytes*) for the code of a function. \
534 SH1: 32 bit alignment is faster, because instructions are always \
535 fetched as a pair from a longword boundary. \
536 SH2 .. SH5 : align to cache line start. */ \
537 if (align_functions == 0) \
539 = TARGET_SMALLCODE ? FUNCTION_BOUNDARY/8 : (1 << CACHE_LOG); \
540 /* The linker relaxation code breaks when a function contains \
541 alignments that are larger than that at the start of a \
542 compilation unit. */ \
546 = align_loops > align_jumps ? align_loops : align_jumps; \
548 /* Also take possible .long constants / mova tables int account. */\
551 if (align_functions < min_align) \
552 align_functions = min_align; \
556 /* Target machine storage layout. */
558 /* Define this if most significant bit is lowest numbered
559 in instructions that operate on numbered bit-fields. */
561 #define BITS_BIG_ENDIAN 0
563 /* Define this if most significant byte of a word is the lowest numbered. */
564 #define BYTES_BIG_ENDIAN (TARGET_LITTLE_ENDIAN == 0)
566 /* Define this if most significant word of a multiword number is the lowest
568 #define WORDS_BIG_ENDIAN (TARGET_LITTLE_ENDIAN == 0)
570 /* Define this to set the endianness to use in libgcc2.c, which can
571 not depend on target_flags. */
572 #if defined(__LITTLE_ENDIAN__)
573 #define LIBGCC2_WORDS_BIG_ENDIAN 0
575 #define LIBGCC2_WORDS_BIG_ENDIAN 1
578 #define MAX_BITS_PER_WORD 64
580 /* Width in bits of an `int'. We want just 32-bits, even if words are
582 #define INT_TYPE_SIZE 32
584 /* Width in bits of a `long'. */
585 #define LONG_TYPE_SIZE (TARGET_SHMEDIA64 ? 64 : 32)
587 /* Width in bits of a `long long'. */
588 #define LONG_LONG_TYPE_SIZE 64
590 /* Width in bits of a `long double'. */
591 #define LONG_DOUBLE_TYPE_SIZE 64
593 /* Width of a word, in units (bytes). */
594 #define UNITS_PER_WORD (TARGET_SHMEDIA ? 8 : 4)
595 #define MIN_UNITS_PER_WORD 4
597 /* Scaling factor for Dwarf data offsets for CFI information.
598 The dwarf2out.c default would use -UNITS_PER_WORD, which is -8 for
599 SHmedia; however, since we do partial register saves for the registers
600 visible to SHcompact, and for target registers for SHMEDIA32, we have
601 to allow saves that are only 4-byte aligned. */
602 #define DWARF_CIE_DATA_ALIGNMENT -4
604 /* Width in bits of a pointer.
605 See also the macro `Pmode' defined below. */
606 #define POINTER_SIZE (TARGET_SHMEDIA64 ? 64 : 32)
608 /* Allocation boundary (in *bits*) for storing arguments in argument list. */
609 #define PARM_BOUNDARY (TARGET_SH5 ? 64 : 32)
611 /* Boundary (in *bits*) on which stack pointer should be aligned. */
612 #define STACK_BOUNDARY BIGGEST_ALIGNMENT
614 /* The log (base 2) of the cache line size, in bytes. Processors prior to
615 SH2 have no actual cache, but they fetch code in chunks of 4 bytes.
616 The SH2/3 have 16 byte cache lines, and the SH4 has a 32 byte cache line */
617 #define CACHE_LOG (TARGET_CACHE32 ? 5 : TARGET_SH2 ? 4 : 2)
619 /* ABI given & required minimum allocation boundary (in *bits*) for the
620 code of a function. */
621 #define FUNCTION_BOUNDARY (16 << TARGET_SHMEDIA)
623 /* On SH5, the lowest bit is used to indicate SHmedia functions, so
624 the vbit must go into the delta field of
625 pointers-to-member-functions. */
626 #define TARGET_PTRMEMFUNC_VBIT_LOCATION \
627 (TARGET_SH5 ? ptrmemfunc_vbit_in_delta : ptrmemfunc_vbit_in_pfn)
629 /* Alignment of field after `int : 0' in a structure. */
630 #define EMPTY_FIELD_BOUNDARY 32
632 /* No data type wants to be aligned rounder than this. */
633 #define BIGGEST_ALIGNMENT (TARGET_ALIGN_DOUBLE ? 64 : 32)
635 /* The best alignment to use in cases where we have a choice. */
636 #define FASTEST_ALIGNMENT (TARGET_SH5 ? 64 : 32)
638 /* Make strings word-aligned so strcpy from constants will be faster. */
639 #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
640 ((TREE_CODE (EXP) == STRING_CST \
641 && (ALIGN) < FASTEST_ALIGNMENT) \
642 ? FASTEST_ALIGNMENT : (ALIGN))
644 /* get_mode_alignment assumes complex values are always held in multiple
645 registers, but that is not the case on the SH; CQImode and CHImode are
646 held in a single integer register. SH5 also holds CSImode and SCmode
647 values in integer registers. This is relevant for argument passing on
648 SHcompact as we use a stack temp in order to pass CSImode by reference. */
649 #define LOCAL_ALIGNMENT(TYPE, ALIGN) \
650 ((GET_MODE_CLASS (TYPE_MODE (TYPE)) == MODE_COMPLEX_INT \
651 || GET_MODE_CLASS (TYPE_MODE (TYPE)) == MODE_COMPLEX_FLOAT) \
652 ? (unsigned) MIN (BIGGEST_ALIGNMENT, GET_MODE_BITSIZE (TYPE_MODE (TYPE))) \
655 /* Make arrays of chars word-aligned for the same reasons. */
656 #define DATA_ALIGNMENT(TYPE, ALIGN) \
657 (TREE_CODE (TYPE) == ARRAY_TYPE \
658 && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \
659 && (ALIGN) < FASTEST_ALIGNMENT ? FASTEST_ALIGNMENT : (ALIGN))
661 /* Number of bits which any structure or union's size must be a
662 multiple of. Each structure or union's size is rounded up to a
664 #define STRUCTURE_SIZE_BOUNDARY (TARGET_PADSTRUCT ? 32 : 8)
666 /* Set this nonzero if move instructions will actually fail to work
667 when given unaligned data. */
668 #define STRICT_ALIGNMENT 1
670 /* If LABEL_AFTER_BARRIER demands an alignment, return its base 2 logarithm. */
671 #define LABEL_ALIGN_AFTER_BARRIER(LABEL_AFTER_BARRIER) \
672 barrier_align (LABEL_AFTER_BARRIER)
674 #define LOOP_ALIGN(A_LABEL) \
675 ((! optimize || TARGET_HARVARD || TARGET_SMALLCODE) \
676 ? 0 : sh_loop_align (A_LABEL))
678 #define LABEL_ALIGN(A_LABEL) \
680 (PREV_INSN (A_LABEL) \
681 && GET_CODE (PREV_INSN (A_LABEL)) == INSN \
682 && GET_CODE (PATTERN (PREV_INSN (A_LABEL))) == UNSPEC_VOLATILE \
683 && XINT (PATTERN (PREV_INSN (A_LABEL)), 1) == UNSPECV_ALIGN) \
684 /* explicit alignment insn in constant tables. */ \
685 ? INTVAL (XVECEXP (PATTERN (PREV_INSN (A_LABEL)), 0, 0)) \
688 /* Jump tables must be 32 bit aligned, no matter the size of the element. */
689 #define ADDR_VEC_ALIGN(ADDR_VEC) 2
691 /* The base two logarithm of the known minimum alignment of an insn length. */
692 #define INSN_LENGTH_ALIGNMENT(A_INSN) \
693 (GET_CODE (A_INSN) == INSN \
694 ? 1 << TARGET_SHMEDIA \
695 : GET_CODE (A_INSN) == JUMP_INSN || GET_CODE (A_INSN) == CALL_INSN \
696 ? 1 << TARGET_SHMEDIA \
699 /* Standard register usage. */
701 /* Register allocation for the Renesas calling convention:
707 r14 frame pointer/call saved
709 ap arg pointer (doesn't really exist, always eliminated)
710 pr subroutine return address
712 mach multiply/accumulate result, high part
713 macl multiply/accumulate result, low part.
714 fpul fp/int communication register
715 rap return address pointer register
717 fr1..fr3 scratch floating point registers
719 fr12..fr15 call saved floating point registers */
721 #define MAX_REGISTER_NAME_LENGTH 5
722 extern char sh_register_names[][MAX_REGISTER_NAME_LENGTH + 1];
724 #define SH_REGISTER_NAMES_INITIALIZER \
726 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
727 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
728 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \
729 "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", \
730 "r32", "r33", "r34", "r35", "r36", "r37", "r38", "r39", \
731 "r40", "r41", "r42", "r43", "r44", "r45", "r46", "r47", \
732 "r48", "r49", "r50", "r51", "r52", "r53", "r54", "r55", \
733 "r56", "r57", "r58", "r59", "r60", "r61", "r62", "r63", \
734 "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", \
735 "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", \
736 "fr16", "fr17", "fr18", "fr19", "fr20", "fr21", "fr22", "fr23", \
737 "fr24", "fr25", "fr26", "fr27", "fr28", "fr29", "fr30", "fr31", \
738 "fr32", "fr33", "fr34", "fr35", "fr36", "fr37", "fr38", "fr39", \
739 "fr40", "fr41", "fr42", "fr43", "fr44", "fr45", "fr46", "fr47", \
740 "fr48", "fr49", "fr50", "fr51", "fr52", "fr53", "fr54", "fr55", \
741 "fr56", "fr57", "fr58", "fr59", "fr60", "fr61", "fr62", "fr63", \
742 "tr0", "tr1", "tr2", "tr3", "tr4", "tr5", "tr6", "tr7", \
743 "xd0", "xd2", "xd4", "xd6", "xd8", "xd10", "xd12", "xd14", \
744 "gbr", "ap", "pr", "t", "mach", "macl", "fpul", "fpscr", \
748 #define REGNAMES_ARR_INDEX_1(index) \
749 (sh_register_names[index])
750 #define REGNAMES_ARR_INDEX_2(index) \
751 REGNAMES_ARR_INDEX_1 ((index)), REGNAMES_ARR_INDEX_1 ((index)+1)
752 #define REGNAMES_ARR_INDEX_4(index) \
753 REGNAMES_ARR_INDEX_2 ((index)), REGNAMES_ARR_INDEX_2 ((index)+2)
754 #define REGNAMES_ARR_INDEX_8(index) \
755 REGNAMES_ARR_INDEX_4 ((index)), REGNAMES_ARR_INDEX_4 ((index)+4)
756 #define REGNAMES_ARR_INDEX_16(index) \
757 REGNAMES_ARR_INDEX_8 ((index)), REGNAMES_ARR_INDEX_8 ((index)+8)
758 #define REGNAMES_ARR_INDEX_32(index) \
759 REGNAMES_ARR_INDEX_16 ((index)), REGNAMES_ARR_INDEX_16 ((index)+16)
760 #define REGNAMES_ARR_INDEX_64(index) \
761 REGNAMES_ARR_INDEX_32 ((index)), REGNAMES_ARR_INDEX_32 ((index)+32)
763 #define REGISTER_NAMES \
765 REGNAMES_ARR_INDEX_64 (0), \
766 REGNAMES_ARR_INDEX_64 (64), \
767 REGNAMES_ARR_INDEX_8 (128), \
768 REGNAMES_ARR_INDEX_8 (136), \
769 REGNAMES_ARR_INDEX_8 (144), \
770 REGNAMES_ARR_INDEX_1 (152) \
773 #define ADDREGNAMES_SIZE 32
774 #define MAX_ADDITIONAL_REGISTER_NAME_LENGTH 4
775 extern char sh_additional_register_names[ADDREGNAMES_SIZE] \
776 [MAX_ADDITIONAL_REGISTER_NAME_LENGTH + 1];
778 #define SH_ADDITIONAL_REGISTER_NAMES_INITIALIZER \
780 "dr0", "dr2", "dr4", "dr6", "dr8", "dr10", "dr12", "dr14", \
781 "dr16", "dr18", "dr20", "dr22", "dr24", "dr26", "dr28", "dr30", \
782 "dr32", "dr34", "dr36", "dr38", "dr40", "dr42", "dr44", "dr46", \
783 "dr48", "dr50", "dr52", "dr54", "dr56", "dr58", "dr60", "dr62" \
786 #define ADDREGNAMES_REGNO(index) \
787 ((index < 32) ? (FIRST_FP_REG + (index) * 2) \
790 #define ADDREGNAMES_ARR_INDEX_1(index) \
791 { (sh_additional_register_names[index]), ADDREGNAMES_REGNO (index) }
792 #define ADDREGNAMES_ARR_INDEX_2(index) \
793 ADDREGNAMES_ARR_INDEX_1 ((index)), ADDREGNAMES_ARR_INDEX_1 ((index)+1)
794 #define ADDREGNAMES_ARR_INDEX_4(index) \
795 ADDREGNAMES_ARR_INDEX_2 ((index)), ADDREGNAMES_ARR_INDEX_2 ((index)+2)
796 #define ADDREGNAMES_ARR_INDEX_8(index) \
797 ADDREGNAMES_ARR_INDEX_4 ((index)), ADDREGNAMES_ARR_INDEX_4 ((index)+4)
798 #define ADDREGNAMES_ARR_INDEX_16(index) \
799 ADDREGNAMES_ARR_INDEX_8 ((index)), ADDREGNAMES_ARR_INDEX_8 ((index)+8)
800 #define ADDREGNAMES_ARR_INDEX_32(index) \
801 ADDREGNAMES_ARR_INDEX_16 ((index)), ADDREGNAMES_ARR_INDEX_16 ((index)+16)
803 #define ADDITIONAL_REGISTER_NAMES \
805 ADDREGNAMES_ARR_INDEX_32 (0) \
808 /* Number of actual hardware registers.
809 The hardware registers are assigned numbers for the compiler
810 from 0 to just below FIRST_PSEUDO_REGISTER.
811 All registers that the compiler knows about must be given numbers,
812 even those that are not normally considered general registers. */
814 /* There are many other relevant definitions in sh.md's md_constants. */
816 #define FIRST_GENERAL_REG R0_REG
817 #define LAST_GENERAL_REG (FIRST_GENERAL_REG + (TARGET_SHMEDIA ? 63 : 15))
818 #define FIRST_FP_REG DR0_REG
819 #define LAST_FP_REG (FIRST_FP_REG + \
820 (TARGET_SHMEDIA_FPU ? 63 : TARGET_SH2E ? 15 : -1))
821 #define FIRST_XD_REG XD0_REG
822 #define LAST_XD_REG (FIRST_XD_REG + ((TARGET_SH4 && TARGET_FMOVD) ? 7 : -1))
823 #define FIRST_TARGET_REG TR0_REG
824 #define LAST_TARGET_REG (FIRST_TARGET_REG + (TARGET_SHMEDIA ? 7 : -1))
826 #define GENERAL_REGISTER_P(REGNO) \
828 (unsigned HOST_WIDE_INT) FIRST_GENERAL_REG, \
829 (unsigned HOST_WIDE_INT) LAST_GENERAL_REG)
831 #define GENERAL_OR_AP_REGISTER_P(REGNO) \
832 (GENERAL_REGISTER_P (REGNO) || ((REGNO) == AP_REG))
834 #define FP_REGISTER_P(REGNO) \
835 ((int) (REGNO) >= FIRST_FP_REG && (int) (REGNO) <= LAST_FP_REG)
837 #define XD_REGISTER_P(REGNO) \
838 ((int) (REGNO) >= FIRST_XD_REG && (int) (REGNO) <= LAST_XD_REG)
840 #define FP_OR_XD_REGISTER_P(REGNO) \
841 (FP_REGISTER_P (REGNO) || XD_REGISTER_P (REGNO))
843 #define FP_ANY_REGISTER_P(REGNO) \
844 (FP_REGISTER_P (REGNO) || XD_REGISTER_P (REGNO) || (REGNO) == FPUL_REG)
846 #define SPECIAL_REGISTER_P(REGNO) \
847 ((REGNO) == GBR_REG || (REGNO) == T_REG \
848 || (REGNO) == MACH_REG || (REGNO) == MACL_REG)
850 #define TARGET_REGISTER_P(REGNO) \
851 ((int) (REGNO) >= FIRST_TARGET_REG && (int) (REGNO) <= LAST_TARGET_REG)
853 #define SHMEDIA_REGISTER_P(REGNO) \
854 (GENERAL_REGISTER_P (REGNO) || FP_REGISTER_P (REGNO) \
855 || TARGET_REGISTER_P (REGNO))
857 /* This is to be used in CONDITIONAL_REGISTER_USAGE, to mark registers
858 that should be fixed. */
859 #define VALID_REGISTER_P(REGNO) \
860 (SHMEDIA_REGISTER_P (REGNO) || XD_REGISTER_P (REGNO) \
861 || (REGNO) == AP_REG || (REGNO) == RAP_REG \
862 || (TARGET_SH1 && (SPECIAL_REGISTER_P (REGNO) || (REGNO) == PR_REG)) \
863 || (TARGET_SH2E && (REGNO) == FPUL_REG))
865 /* The mode that should be generally used to store a register by
866 itself in the stack, or to load it back. */
867 #define REGISTER_NATURAL_MODE(REGNO) \
868 (FP_REGISTER_P (REGNO) ? SFmode \
869 : XD_REGISTER_P (REGNO) ? DFmode \
870 : TARGET_SHMEDIA && ! HARD_REGNO_CALL_PART_CLOBBERED ((REGNO), DImode) \
874 #define FIRST_PSEUDO_REGISTER 153
876 /* 1 for registers that have pervasive standard uses
877 and are not available for the register allocator.
879 Mach register is fixed 'cause it's only 10 bits wide for SH1.
880 It is 32 bits wide for SH2. */
882 #define FIXED_REGISTERS \
884 /* Regular registers. */ \
885 0, 0, 0, 0, 0, 0, 0, 0, \
886 0, 0, 0, 0, 0, 0, 0, 1, \
887 /* r16 is reserved, r18 is the former pr. */ \
888 1, 0, 0, 0, 0, 0, 0, 0, \
889 /* r24 is reserved for the OS; r25, for the assembler or linker. */ \
890 /* r26 is a global variable data pointer; r27 is for constants. */ \
891 1, 1, 1, 1, 0, 0, 0, 0, \
892 0, 0, 0, 0, 0, 0, 0, 0, \
893 0, 0, 0, 0, 0, 0, 0, 0, \
894 0, 0, 0, 0, 0, 0, 0, 0, \
895 0, 0, 0, 0, 0, 0, 0, 1, \
896 /* FP registers. */ \
897 0, 0, 0, 0, 0, 0, 0, 0, \
898 0, 0, 0, 0, 0, 0, 0, 0, \
899 0, 0, 0, 0, 0, 0, 0, 0, \
900 0, 0, 0, 0, 0, 0, 0, 0, \
901 0, 0, 0, 0, 0, 0, 0, 0, \
902 0, 0, 0, 0, 0, 0, 0, 0, \
903 0, 0, 0, 0, 0, 0, 0, 0, \
904 0, 0, 0, 0, 0, 0, 0, 0, \
905 /* Branch target registers. */ \
906 0, 0, 0, 0, 0, 0, 0, 0, \
907 /* XD registers. */ \
908 0, 0, 0, 0, 0, 0, 0, 0, \
909 /*"gbr", "ap", "pr", "t", "mach", "macl", "fpul", "fpscr", */ \
910 1, 1, 1, 1, 1, 1, 0, 1, \
915 /* 1 for registers not available across function calls.
916 These must include the FIXED_REGISTERS and also any
917 registers that can be used without being saved.
918 The latter must include the registers where values are returned
919 and the register where structure-value addresses are passed.
920 Aside from that, you can include as many other registers as you like. */
922 #define CALL_USED_REGISTERS \
924 /* Regular registers. */ \
925 1, 1, 1, 1, 1, 1, 1, 1, \
926 /* R8 and R9 are call-clobbered on SH5, but not on earlier SH ABIs. \
927 Only the lower 32bits of R10-R14 are guaranteed to be preserved \
928 across SH5 function calls. */ \
929 0, 0, 0, 0, 0, 0, 0, 1, \
930 1, 1, 1, 1, 1, 1, 1, 1, \
931 1, 1, 1, 1, 0, 0, 0, 0, \
932 0, 0, 0, 0, 1, 1, 1, 1, \
933 1, 1, 1, 1, 0, 0, 0, 0, \
934 0, 0, 0, 0, 0, 0, 0, 0, \
935 0, 0, 0, 0, 1, 1, 1, 1, \
936 /* FP registers. */ \
937 1, 1, 1, 1, 1, 1, 1, 1, \
938 1, 1, 1, 1, 0, 0, 0, 0, \
939 1, 1, 1, 1, 1, 1, 1, 1, \
940 1, 1, 1, 1, 1, 1, 1, 1, \
941 1, 1, 1, 1, 0, 0, 0, 0, \
942 0, 0, 0, 0, 0, 0, 0, 0, \
943 0, 0, 0, 0, 0, 0, 0, 0, \
944 0, 0, 0, 0, 0, 0, 0, 0, \
945 /* Branch target registers. */ \
946 1, 1, 1, 1, 1, 0, 0, 0, \
947 /* XD registers. */ \
948 1, 1, 1, 1, 1, 1, 0, 0, \
949 /*"gbr", "ap", "pr", "t", "mach", "macl", "fpul", "fpscr", */ \
950 1, 1, 1, 1, 1, 1, 1, 1, \
955 /* Only the lower 32-bits of R10-R14 are guaranteed to be preserved
956 across SHcompact function calls. We can't tell whether a called
957 function is SHmedia or SHcompact, so we assume it may be when
958 compiling SHmedia code with the 32-bit ABI, since that's the only
959 ABI that can be linked with SHcompact code. */
960 #define HARD_REGNO_CALL_PART_CLOBBERED(REGNO,MODE) \
962 && GET_MODE_SIZE (MODE) > 4 \
963 && (((REGNO) >= FIRST_GENERAL_REG + 10 \
964 && (REGNO) <= FIRST_GENERAL_REG + 15) \
965 || TARGET_REGISTER_P (REGNO) \
966 || (REGNO) == PR_MEDIA_REG))
968 /* Return number of consecutive hard regs needed starting at reg REGNO
969 to hold something of mode MODE.
970 This is ordinarily the length in words of a value of mode MODE
971 but can be less for certain modes in special long registers.
973 On the SH all but the XD regs are UNITS_PER_WORD bits wide. */
975 #define HARD_REGNO_NREGS(REGNO, MODE) \
976 (XD_REGISTER_P (REGNO) \
977 ? ((GET_MODE_SIZE (MODE) + (2*UNITS_PER_WORD - 1)) / (2*UNITS_PER_WORD)) \
978 : (TARGET_SHMEDIA && FP_REGISTER_P (REGNO)) \
979 ? ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD/2 - 1) / (UNITS_PER_WORD/2)) \
980 : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
982 /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
983 We can allow any mode in any general register. The special registers
984 only allow SImode. Don't allow any mode in the PR. */
986 /* We cannot hold DCmode values in the XD registers because alter_reg
987 handles subregs of them incorrectly. We could work around this by
988 spacing the XD registers like the DR registers, but this would require
989 additional memory in every compilation to hold larger register vectors.
990 We could hold SFmode / SCmode values in XD registers, but that
991 would require a tertiary reload when reloading from / to memory,
992 and a secondary reload to reload from / to general regs; that
993 seems to be a loosing proposition. */
994 /* We want to allow TImode FP regs so that when V4SFmode is loaded as TImode,
995 it won't be ferried through GP registers first. */
996 #define HARD_REGNO_MODE_OK(REGNO, MODE) \
997 (SPECIAL_REGISTER_P (REGNO) ? (MODE) == SImode \
998 : (REGNO) == FPUL_REG ? (MODE) == SImode || (MODE) == SFmode \
999 : FP_REGISTER_P (REGNO) && (MODE) == SFmode \
1001 : (MODE) == V2SFmode \
1002 ? ((FP_REGISTER_P (REGNO) && ((REGNO) - FIRST_FP_REG) % 2 == 0) \
1003 || GENERAL_REGISTER_P (REGNO)) \
1004 : (MODE) == V4SFmode \
1005 ? ((FP_REGISTER_P (REGNO) && ((REGNO) - FIRST_FP_REG) % 4 == 0) \
1006 || (! TARGET_SHMEDIA && GENERAL_REGISTER_P (REGNO))) \
1007 : (MODE) == V16SFmode \
1009 ? (FP_REGISTER_P (REGNO) && ((REGNO) - FIRST_FP_REG) % 16 == 0) \
1010 : (REGNO) == FIRST_XD_REG) \
1011 : FP_REGISTER_P (REGNO) \
1012 ? ((MODE) == SFmode || (MODE) == SImode \
1013 || ((TARGET_SH2E || TARGET_SHMEDIA) && (MODE) == SCmode) \
1014 || (((TARGET_SH4 && (MODE) == DFmode) || (MODE) == DCmode \
1015 || (TARGET_SHMEDIA && ((MODE) == DFmode || (MODE) == DImode \
1016 || (MODE) == V2SFmode || (MODE) == TImode))) \
1017 && (((REGNO) - FIRST_FP_REG) & 1) == 0)) \
1018 : XD_REGISTER_P (REGNO) \
1019 ? (MODE) == DFmode \
1020 : TARGET_REGISTER_P (REGNO) \
1021 ? ((MODE) == DImode || (MODE) == SImode) \
1022 : (REGNO) == PR_REG ? (MODE) == SImode \
1023 : (REGNO) == FPSCR_REG ? (MODE) == PSImode \
1026 /* Value is 1 if MODE is a supported vector mode. */
1027 #define VECTOR_MODE_SUPPORTED_P(MODE) \
1029 && ((MODE) == V2SFmode || (MODE) == V4SFmode || (MODE) == V16SFmode)) \
1030 || (TARGET_SHMEDIA \
1031 && ((MODE) == V8QImode || (MODE) == V2HImode || (MODE) == V4HImode \
1032 || (MODE) == V2SImode)))
1034 /* Value is 1 if it is a good idea to tie two pseudo registers
1035 when one has mode MODE1 and one has mode MODE2.
1036 If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
1037 for any hard reg, then this must be 0 for correct output.
1038 That's the case for xd registers: we don't hold SFmode values in
1039 them, so we can't tie an SFmode pseudos with one in another
1040 floating-point mode. */
1042 #define MODES_TIEABLE_P(MODE1, MODE2) \
1043 ((MODE1) == (MODE2) \
1044 || (GET_MODE_CLASS (MODE1) == GET_MODE_CLASS (MODE2) \
1045 && (TARGET_SHMEDIA ? ((GET_MODE_SIZE (MODE1) <= 4) \
1046 && (GET_MODE_SIZE (MODE2) <= 4)) \
1047 : ((MODE1) != SFmode && (MODE2) != SFmode))))
1049 /* A C expression that is nonzero if hard register NEW_REG can be
1050 considered for use as a rename register for OLD_REG register */
1052 #define HARD_REGNO_RENAME_OK(OLD_REG, NEW_REG) \
1053 sh_hard_regno_rename_ok (OLD_REG, NEW_REG)
1055 /* Specify the registers used for certain standard purposes.
1056 The values of these macros are register numbers. */
1058 /* Define this if the program counter is overloaded on a register. */
1059 /* #define PC_REGNUM 15*/
1061 /* Register to use for pushing function arguments. */
1062 #define STACK_POINTER_REGNUM SP_REG
1064 /* Base register for access to local variables of the function. */
1065 #define FRAME_POINTER_REGNUM FP_REG
1067 /* Fake register that holds the address on the stack of the
1068 current function's return address. */
1069 #define RETURN_ADDRESS_POINTER_REGNUM RAP_REG
1071 /* Register to hold the addressing base for position independent
1072 code access to data items. */
1073 #define PIC_OFFSET_TABLE_REGNUM (flag_pic ? PIC_REG : INVALID_REGNUM)
1075 #define GOT_SYMBOL_NAME "*_GLOBAL_OFFSET_TABLE_"
1077 /* Value should be nonzero if functions must have frame pointers.
1078 Zero means the frame pointer need not be set up (and parms may be accessed
1079 via the stack pointer) in functions that seem suitable. */
1081 #define FRAME_POINTER_REQUIRED 0
1083 /* Definitions for register eliminations.
1085 We have three registers that can be eliminated on the SH. First, the
1086 frame pointer register can often be eliminated in favor of the stack
1087 pointer register. Secondly, the argument pointer register can always be
1088 eliminated; it is replaced with either the stack or frame pointer.
1089 Third, there is the return address pointer, which can also be replaced
1090 with either the stack or the frame pointer. */
1092 /* This is an array of structures. Each structure initializes one pair
1093 of eliminable registers. The "from" register number is given first,
1094 followed by "to". Eliminations of the same "from" register are listed
1095 in order of preference. */
1097 /* If you add any registers here that are not actually hard registers,
1098 and that have any alternative of elimination that doesn't always
1099 apply, you need to amend calc_live_regs to exclude it, because
1100 reload spills all eliminable registers where it sees an
1101 can_eliminate == 0 entry, thus making them 'live' .
1102 If you add any hard registers that can be eliminated in different
1103 ways, you have to patch reload to spill them only when all alternatives
1104 of elimination fail. */
1106 #define ELIMINABLE_REGS \
1107 {{ FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
1108 { RETURN_ADDRESS_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
1109 { RETURN_ADDRESS_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
1110 { ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
1111 { ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM},}
1113 /* Given FROM and TO register numbers, say whether this elimination
1115 #define CAN_ELIMINATE(FROM, TO) \
1116 (!((FROM) == FRAME_POINTER_REGNUM && FRAME_POINTER_REQUIRED))
1118 /* Define the offset between two registers, one to be eliminated, and the other
1119 its replacement, at the start of a routine. */
1121 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
1122 OFFSET = initial_elimination_offset ((FROM), (TO))
1124 /* Base register for access to arguments of the function. */
1125 #define ARG_POINTER_REGNUM AP_REG
1127 /* Register in which the static-chain is passed to a function. */
1128 #define STATIC_CHAIN_REGNUM (TARGET_SH5 ? 1 : 3)
1130 /* Don't default to pcc-struct-return, because we have already specified
1131 exactly how to return structures in the TARGET_RETURN_IN_MEMORY
1134 #define DEFAULT_PCC_STRUCT_RETURN 0
1136 #define SHMEDIA_REGS_STACK_ADJUST() \
1137 (TARGET_SHCOMPACT && current_function_has_nonlocal_label \
1138 ? (8 * (/* r28-r35 */ 8 + /* r44-r59 */ 16 + /* tr5-tr7 */ 3) \
1139 + (TARGET_FPU_ANY ? 4 * (/* fr36 - fr63 */ 28) : 0)) \
1143 /* Define the classes of registers for register constraints in the
1144 machine description. Also define ranges of constants.
1146 One of the classes must always be named ALL_REGS and include all hard regs.
1147 If there is more than one class, another class must be named NO_REGS
1148 and contain no registers.
1150 The name GENERAL_REGS must be the name of a class (or an alias for
1151 another name such as ALL_REGS). This is the class of registers
1152 that is allowed by "g" or "r" in a register constraint.
1153 Also, registers outside this class are allocated only when
1154 instructions express preferences for them.
1156 The classes must be numbered in nondecreasing order; that is,
1157 a larger-numbered class must never be contained completely
1158 in a smaller-numbered class.
1160 For any two classes, it is very desirable that there be another
1161 class that represents their union. */
1163 /* The SH has two sorts of general registers, R0 and the rest. R0 can
1164 be used as the destination of some of the arithmetic ops. There are
1165 also some special purpose registers; the T bit register, the
1166 Procedure Return Register and the Multiply Accumulate Registers. */
1167 /* Place GENERAL_REGS after FPUL_REGS so that it will be preferred by
1168 reg_class_subunion. We don't want to have an actual union class
1169 of these, because it would only be used when both classes are calculated
1170 to give the same cost, but there is only one FPUL register.
1171 Besides, regclass fails to notice the different REGISTER_MOVE_COSTS
1172 applying to the actual instruction alternative considered. E.g., the
1173 y/r alternative of movsi_ie is considered to have no more cost that
1174 the r/r alternative, which is patently untrue. */
1197 #define N_REG_CLASSES (int) LIM_REG_CLASSES
1199 /* Give names of register classes as strings for dump file. */
1200 #define REG_CLASS_NAMES \
1215 "GENERAL_FP_REGS", \
1220 /* Define which registers fit in which classes.
1221 This is an initializer for a vector of HARD_REG_SET
1222 of length N_REG_CLASSES. */
1224 #define REG_CLASS_CONTENTS \
1227 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, \
1229 { 0x00000001, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, \
1231 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00040000 }, \
1233 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00080000 }, \
1235 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00300000 }, \
1237 { 0x00000000, 0x00000000, 0x00000000, 0x00000001, 0x00400000 }, \
1238 /* SIBCALL_REGS: Initialized in CONDITIONAL_REGISTER_USAGE. */ \
1239 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, \
1240 /* GENERAL_REGS: */ \
1241 { 0xffffffff, 0xffffffff, 0x00000000, 0x00000000, 0x01020000 }, \
1243 { 0x00000000, 0x00000000, 0x00000001, 0x00000000, 0x00000000 }, \
1245 { 0x00000000, 0x00000000, 0xffffffff, 0xffffffff, 0x00000000 }, \
1246 /* DF_HI_REGS: Initialized in CONDITIONAL_REGISTER_USAGE. */ \
1247 { 0x00000000, 0x00000000, 0xffffffff, 0xffffffff, 0x0000ff00 }, \
1249 { 0x00000000, 0x00000000, 0xffffffff, 0xffffffff, 0x0000ff00 }, \
1251 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00800000 }, \
1252 /* GENERAL_FP_REGS: */ \
1253 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0x0102ff00 }, \
1254 /* TARGET_REGS: */ \
1255 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x000000ff }, \
1257 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0x01ffffff }, \
1260 /* The same information, inverted:
1261 Return the class number of the smallest class containing
1262 reg number REGNO. This could be a conditional expression
1263 or could index an array. */
1265 extern enum reg_class regno_reg_class[FIRST_PSEUDO_REGISTER];
1266 #define REGNO_REG_CLASS(REGNO) regno_reg_class[(REGNO)]
1268 /* When defined, the compiler allows registers explicitly used in the
1269 rtl to be used as spill registers but prevents the compiler from
1270 extending the lifetime of these registers. */
1272 #define SMALL_REGISTER_CLASSES (! TARGET_SHMEDIA)
1274 /* The order in which register should be allocated. */
1275 /* Sometimes FP0_REGS becomes the preferred class of a floating point pseudo,
1276 and GENERAL_FP_REGS the alternate class. Since FP0 is likely to be
1277 spilled or used otherwise, we better have the FP_REGS allocated first. */
1278 #define REG_ALLOC_ORDER \
1279 {/* Caller-saved FPRs */ \
1280 65, 66, 67, 68, 69, 70, 71, 64, \
1281 72, 73, 74, 75, 80, 81, 82, 83, \
1282 84, 85, 86, 87, 88, 89, 90, 91, \
1283 92, 93, 94, 95, 96, 97, 98, 99, \
1284 /* Callee-saved FPRs */ \
1285 76, 77, 78, 79,100,101,102,103, \
1286 104,105,106,107,108,109,110,111, \
1287 112,113,114,115,116,117,118,119, \
1288 120,121,122,123,124,125,126,127, \
1289 136,137,138,139,140,141,142,143, \
1291 /* Caller-saved GPRs (except 8/9 on SH1-4) */ \
1292 1, 2, 3, 7, 6, 5, 4, 0, \
1293 8, 9, 17, 19, 20, 21, 22, 23, \
1294 36, 37, 38, 39, 40, 41, 42, 43, \
1296 /* SH1-4 callee-saved saved GPRs / SH5 partially-saved GPRs */ \
1297 10, 11, 12, 13, 14, 18, \
1298 /* SH5 callee-saved GPRs */ \
1299 28, 29, 30, 31, 32, 33, 34, 35, \
1300 44, 45, 46, 47, 48, 49, 50, 51, \
1301 52, 53, 54, 55, 56, 57, 58, 59, \
1303 /* SH5 branch target registers */ \
1304 128,129,130,131,132,133,134,135, \
1305 /* Fixed registers */ \
1306 15, 16, 24, 25, 26, 27, 63,144, \
1307 145,146,147,148,149,152 }
1309 /* The class value for index registers, and the one for base regs. */
1310 #define INDEX_REG_CLASS (TARGET_SHMEDIA ? GENERAL_REGS : R0_REGS)
1311 #define BASE_REG_CLASS GENERAL_REGS
1313 /* Get reg_class from a letter such as appears in the machine
1315 extern enum reg_class reg_class_from_letter[];
1317 /* We might use 'Rxx' constraints in the future for exotic reg classes.*/
1318 #define REG_CLASS_FROM_CONSTRAINT(C, STR) \
1319 (ISLOWER (C) ? reg_class_from_letter[(C)-'a'] : NO_REGS )
1321 /* Overview of uppercase letter constraints:
1322 A: Addresses (constraint len == 3)
1323 Ac4: sh4 cache operations
1324 Ac5: sh5 cache operations
1325 Bxx: miscellaneous constraints
1326 Bsc: SCRATCH - for the scratch register in movsi_ie in the
1328 C: Constants other than only CONST_INT (constraint len == 3)
1329 C16: 16 bit constant, literal or symbolic
1330 Csy: label or symbol
1331 Cpg: non-explicit constants that can be directly loaded into a general
1332 purpose register in PIC code. like 's' except we don't allow
1334 IJKLMNOP: CONT_INT constants
1336 J16: 0xffffffff00000000 | 0x00000000ffffffff
1337 Kxx: unsigned xx bit
1341 Q: pc relative load operand
1342 Rxx: reserved for exotic register classes.
1343 S: extra memory (storage) constraints (constraint len == 3)
1344 Sua: unaligned memory operations
1348 unused CONST_INT constraint letters: LO
1349 unused EXTRA_CONSTRAINT letters: D T U Y */
1351 #if 1 /* check that the transition went well. */
1352 #define CONSTRAINT_LEN(C,STR) \
1353 (((C) == 'L' || (C) == 'O' || (C) == 'D' || (C) == 'T' || (C) == 'U' \
1356 && (((STR)[1] != '0' && (STR)[1] != '1') \
1357 || (STR)[2] < '0' || (STR)[2] > '9')) \
1358 || ((C) == 'B' && ((STR)[1] != 's' || (STR)[2] != 'c')) \
1359 || ((C) == 'J' && ((STR)[1] != '1' || (STR)[2] != '6')) \
1360 || ((C) == 'K' && ((STR)[1] != '0' || (STR)[2] != '8')) \
1361 || ((C) == 'P' && ((STR)[1] != '2' || (STR)[2] != '7'))) \
1363 : ((C) == 'A' || (C) == 'B' || (C) == 'C' \
1364 || (C) == 'I' || (C) == 'J' || (C) == 'K' || (C) == 'P' \
1365 || (C) == 'R' || (C) == 'S') \
1367 : DEFAULT_CONSTRAINT_LEN ((C), (STR)))
1369 #define CONSTRAINT_LEN(C,STR) \
1370 (((C) == 'A' || (C) == 'B' || (C) == 'C' \
1371 || (C) == 'I' || (C) == 'J' || (C) == 'K' || (C) == 'P' \
1372 || (C) == 'R' || (C) == 'S') \
1373 ? 3 : DEFAULT_CONSTRAINT_LEN ((C), (STR)))
1376 /* The letters I, J, K, L and M in a register constraint string
1377 can be used to stand for particular ranges of immediate operands.
1378 This macro defines what the ranges are.
1379 C is the letter, and VALUE is a constant value.
1380 Return 1 if VALUE is in the range specified by C.
1381 I08: arithmetic operand -127..128, as used in add, sub, etc
1382 I16: arithmetic operand -32768..32767, as used in SHmedia movi and shori
1383 P27: shift operand 1,2,8 or 16
1384 K08: logical operand 0..255, as used in and, or, etc.
1387 I06: arithmetic operand -32..31, as used in SHmedia beqi, bnei and xori
1388 I10: arithmetic operand -512..511, as used in SHmedia andi, ori
1391 #define CONST_OK_FOR_I06(VALUE) (((HOST_WIDE_INT)(VALUE)) >= -32 \
1392 && ((HOST_WIDE_INT)(VALUE)) <= 31)
1393 #define CONST_OK_FOR_I08(VALUE) (((HOST_WIDE_INT)(VALUE))>= -128 \
1394 && ((HOST_WIDE_INT)(VALUE)) <= 127)
1395 #define CONST_OK_FOR_I10(VALUE) (((HOST_WIDE_INT)(VALUE)) >= -512 \
1396 && ((HOST_WIDE_INT)(VALUE)) <= 511)
1397 #define CONST_OK_FOR_I16(VALUE) (((HOST_WIDE_INT)(VALUE)) >= -32768 \
1398 && ((HOST_WIDE_INT)(VALUE)) <= 32767)
1399 #define CONST_OK_FOR_I(VALUE, STR) \
1400 ((STR)[1] == '0' && (STR)[2] == 6 ? CONST_OK_FOR_I06 (VALUE) \
1401 : (STR)[1] == '0' && (STR)[2] == '8' ? CONST_OK_FOR_I08 (VALUE) \
1402 : (STR)[1] == '1' && (STR)[2] == '0' ? CONST_OK_FOR_I10 (VALUE) \
1403 : (STR)[1] == '1' && (STR)[2] == '6' ? CONST_OK_FOR_I16 (VALUE) \
1406 #define CONST_OK_FOR_J16(VALUE) \
1407 (HOST_BITS_PER_WIDE_INT >= 64 && (VALUE) == (HOST_WIDE_INT) 0xffffffff \
1408 || (HOST_BITS_PER_WIDE_INT >= 64 && (VALUE) == (HOST_WIDE_INT) -1 << 32))
1409 #define CONST_OK_FOR_J(VALUE, STR) \
1410 ((STR)[1] == '1' && (STR)[2] == '6' ? CONST_OK_FOR_J16 (VALUE) \
1413 #define CONST_OK_FOR_K08(VALUE) (((HOST_WIDE_INT)(VALUE))>= 0 \
1414 && ((HOST_WIDE_INT)(VALUE)) <= 255)
1415 #define CONST_OK_FOR_K(VALUE, STR) \
1416 ((STR)[1] == '0' && (STR)[2] == '8' ? CONST_OK_FOR_K08 (VALUE) \
1418 #define CONST_OK_FOR_P27(VALUE) \
1419 ((VALUE)==1||(VALUE)==2||(VALUE)==8||(VALUE)==16)
1420 #define CONST_OK_FOR_P(VALUE, STR) \
1421 ((STR)[1] == '2' && (STR)[2] == '7' ? CONST_OK_FOR_P27 (VALUE) \
1423 #define CONST_OK_FOR_M(VALUE) ((VALUE)==1)
1424 #define CONST_OK_FOR_N(VALUE) ((VALUE)==0)
1425 #define CONST_OK_FOR_CONSTRAINT_P(VALUE, C, STR) \
1426 ((C) == 'I' ? CONST_OK_FOR_I ((VALUE), (STR)) \
1427 : (C) == 'J' ? CONST_OK_FOR_J ((VALUE), (STR)) \
1428 : (C) == 'K' ? CONST_OK_FOR_K ((VALUE), (STR)) \
1429 : (C) == 'M' ? CONST_OK_FOR_M (VALUE) \
1430 : (C) == 'N' ? CONST_OK_FOR_N (VALUE) \
1431 : (C) == 'P' ? CONST_OK_FOR_P ((VALUE), (STR)) \
1434 /* Similar, but for floating constants, and defining letters G and H.
1435 Here VALUE is the CONST_DOUBLE rtx itself. */
1437 #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
1438 ((C) == 'G' ? (fp_zero_operand (VALUE) && fldi_ok ()) \
1439 : (C) == 'H' ? (fp_one_operand (VALUE) && fldi_ok ()) \
1442 /* Given an rtx X being reloaded into a reg required to be
1443 in class CLASS, return the class of reg to actually use.
1444 In general this is just CLASS; but on some machines
1445 in some cases it is preferable to use a more restrictive class. */
1447 #define PREFERRED_RELOAD_CLASS(X, CLASS) \
1448 ((CLASS) == NO_REGS && TARGET_SHMEDIA \
1449 && (GET_CODE (X) == CONST_DOUBLE \
1450 || GET_CODE (X) == SYMBOL_REF) \
1454 #define SECONDARY_OUTPUT_RELOAD_CLASS(CLASS,MODE,X) \
1455 ((((REGCLASS_HAS_FP_REG (CLASS) \
1456 && (GET_CODE (X) == REG \
1457 && (GENERAL_OR_AP_REGISTER_P (REGNO (X)) \
1458 || (FP_REGISTER_P (REGNO (X)) && (MODE) == SImode \
1459 && TARGET_FMOVD)))) \
1460 || (REGCLASS_HAS_GENERAL_REG (CLASS) \
1461 && GET_CODE (X) == REG \
1462 && FP_REGISTER_P (REGNO (X)))) \
1463 && ! TARGET_SHMEDIA \
1464 && ((MODE) == SFmode || (MODE) == SImode)) \
1466 : (((CLASS) == FPUL_REGS \
1467 || (REGCLASS_HAS_FP_REG (CLASS) \
1468 && ! TARGET_SHMEDIA && MODE == SImode)) \
1469 && (GET_CODE (X) == MEM \
1470 || (GET_CODE (X) == REG \
1471 && (REGNO (X) >= FIRST_PSEUDO_REGISTER \
1472 || REGNO (X) == T_REG \
1473 || system_reg_operand (X, VOIDmode))))) \
1475 : ((CLASS) == TARGET_REGS \
1476 || (TARGET_SHMEDIA && (CLASS) == SIBCALL_REGS)) \
1477 ? ((target_operand ((X), (MODE)) \
1478 && ! target_reg_operand ((X), (MODE))) \
1479 ? NO_REGS : GENERAL_REGS) \
1480 : (((CLASS) == MAC_REGS || (CLASS) == PR_REGS) \
1481 && GET_CODE (X) == REG && ! GENERAL_REGISTER_P (REGNO (X)) \
1482 && (CLASS) != REGNO_REG_CLASS (REGNO (X))) \
1484 : ((CLASS) != GENERAL_REGS && GET_CODE (X) == REG \
1485 && TARGET_REGISTER_P (REGNO (X))) \
1486 ? GENERAL_REGS : NO_REGS)
1488 #define SECONDARY_INPUT_RELOAD_CLASS(CLASS,MODE,X) \
1489 ((REGCLASS_HAS_FP_REG (CLASS) \
1490 && ! TARGET_SHMEDIA \
1491 && immediate_operand ((X), (MODE)) \
1492 && ! ((fp_zero_operand (X) || fp_one_operand (X)) \
1493 && (MODE) == SFmode && fldi_ok ())) \
1495 : (CLASS == FPUL_REGS \
1496 && ((GET_CODE (X) == REG \
1497 && (REGNO (X) == MACL_REG || REGNO (X) == MACH_REG \
1498 || REGNO (X) == T_REG)) \
1499 || GET_CODE (X) == PLUS)) \
1501 : CLASS == FPUL_REGS && immediate_operand ((X), (MODE)) \
1502 ? (GET_CODE (X) == CONST_INT && CONST_OK_FOR_I08 (INTVAL (X)) \
1505 : (CLASS == FPSCR_REGS \
1506 && ((GET_CODE (X) == REG && REGNO (X) >= FIRST_PSEUDO_REGISTER) \
1507 || (GET_CODE (X) == MEM && GET_CODE (XEXP ((X), 0)) == PLUS)))\
1509 : (REGCLASS_HAS_FP_REG (CLASS) \
1511 && immediate_operand ((X), (MODE)) \
1512 && (X) != CONST0_RTX (GET_MODE (X)) \
1513 && GET_MODE (X) != V4SFmode) \
1515 : SECONDARY_OUTPUT_RELOAD_CLASS((CLASS),(MODE),(X)))
1517 /* Return the maximum number of consecutive registers
1518 needed to represent mode MODE in a register of class CLASS.
1520 If TARGET_SHMEDIA, we need two FP registers per word.
1521 Otherwise we will need at most one register per word. */
1522 #define CLASS_MAX_NREGS(CLASS, MODE) \
1524 && TEST_HARD_REG_BIT (reg_class_contents[CLASS], FIRST_FP_REG) \
1525 ? (GET_MODE_SIZE (MODE) + UNITS_PER_WORD/2 - 1) / (UNITS_PER_WORD/2) \
1526 : (GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
1528 /* If defined, gives a class of registers that cannot be used as the
1529 operand of a SUBREG that changes the mode of the object illegally. */
1530 /* ??? We need to renumber the internal numbers for the frnn registers
1531 when in little endian in order to allow mode size changes. */
1533 #define CANNOT_CHANGE_MODE_CLASS(FROM, TO, CLASS) \
1534 sh_cannot_change_mode_class (FROM, TO, CLASS)
1536 /* Stack layout; function entry, exit and calling. */
1538 /* Define the number of registers that can hold parameters.
1539 These macros are used only in other macro definitions below. */
1541 #define NPARM_REGS(MODE) \
1542 (TARGET_FPU_ANY && (MODE) == SFmode \
1543 ? (TARGET_SH5 ? 12 : 8) \
1544 : TARGET_SH4 && (GET_MODE_CLASS (MODE) == MODE_FLOAT \
1545 || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) \
1546 ? (TARGET_SH5 ? 12 : 8) \
1547 : (TARGET_SH5 ? 8 : 4))
1549 #define FIRST_PARM_REG (FIRST_GENERAL_REG + (TARGET_SH5 ? 2 : 4))
1550 #define FIRST_RET_REG (FIRST_GENERAL_REG + (TARGET_SH5 ? 2 : 0))
1552 #define FIRST_FP_PARM_REG (FIRST_FP_REG + (TARGET_SH5 ? 0 : 4))
1553 #define FIRST_FP_RET_REG FIRST_FP_REG
1555 /* Define this if pushing a word on the stack
1556 makes the stack pointer a smaller address. */
1557 #define STACK_GROWS_DOWNWARD
1559 /* Define this macro if the addresses of local variable slots are at
1560 negative offsets from the frame pointer.
1562 The SH only has positive indexes, so grow the frame up. */
1563 /* #define FRAME_GROWS_DOWNWARD */
1565 /* Offset from the frame pointer to the first local variable slot to
1567 #define STARTING_FRAME_OFFSET 0
1569 /* If we generate an insn to push BYTES bytes,
1570 this says how many the stack pointer really advances by. */
1571 /* Don't define PUSH_ROUNDING, since the hardware doesn't do this.
1572 When PUSH_ROUNDING is not defined, PARM_BOUNDARY will cause gcc to
1573 do correct alignment. */
1575 #define PUSH_ROUNDING(NPUSHED) (((NPUSHED) + 3) & ~3)
1578 /* Offset of first parameter from the argument pointer register value. */
1579 #define FIRST_PARM_OFFSET(FNDECL) 0
1581 /* Value is the number of byte of arguments automatically
1582 popped when returning from a subroutine call.
1583 FUNDECL is the declaration node of the function (as a tree),
1584 FUNTYPE is the data type of the function (as a tree),
1585 or for a library call it is an identifier node for the subroutine name.
1586 SIZE is the number of bytes of arguments passed on the stack.
1588 On the SH, the caller does not pop any of its arguments that were passed
1590 #define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE) 0
1592 /* Value is the number of bytes of arguments automatically popped when
1593 calling a subroutine.
1594 CUM is the accumulated argument list.
1596 On SHcompact, the call trampoline pops arguments off the stack. */
1597 #define CALL_POPS_ARGS(CUM) (TARGET_SHCOMPACT ? (CUM).stack_regs * 8 : 0)
1599 /* Nonzero if we do not know how to pass TYPE solely in registers.
1600 Values that come in registers with inconvenient padding are stored
1601 to memory at the function start. */
1603 #define MUST_PASS_IN_STACK(MODE,TYPE) \
1605 && (TREE_CODE (TYPE_SIZE (TYPE)) != INTEGER_CST \
1606 || TREE_ADDRESSABLE (TYPE)))
1607 /* Some subroutine macros specific to this machine. */
1609 #define BASE_RETURN_VALUE_REG(MODE) \
1610 ((TARGET_FPU_ANY && ((MODE) == SFmode)) \
1611 ? FIRST_FP_RET_REG \
1612 : TARGET_FPU_ANY && (MODE) == SCmode \
1613 ? FIRST_FP_RET_REG \
1614 : (TARGET_FPU_DOUBLE \
1615 && ((MODE) == DFmode || (MODE) == SFmode \
1616 || (MODE) == DCmode || (MODE) == SCmode )) \
1617 ? FIRST_FP_RET_REG \
1620 #define BASE_ARG_REG(MODE) \
1621 ((TARGET_SH2E && ((MODE) == SFmode)) \
1622 ? FIRST_FP_PARM_REG \
1623 : TARGET_SH4 && (GET_MODE_CLASS (MODE) == MODE_FLOAT \
1624 || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT)\
1625 ? FIRST_FP_PARM_REG \
1628 /* Define how to find the value returned by a function.
1629 VALTYPE is the data type of the value (as a tree).
1630 If the precise function being called is known, FUNC is its FUNCTION_DECL;
1631 otherwise, FUNC is 0.
1632 For the SH, this is like LIBCALL_VALUE, except that we must change the
1633 mode like PROMOTE_MODE does.
1634 ??? PROMOTE_MODE is ignored for non-scalar types. The set of types
1635 tested here has to be kept in sync with the one in explow.c:promote_mode. */
1637 #define FUNCTION_VALUE(VALTYPE, FUNC) \
1639 ((GET_MODE_CLASS (TYPE_MODE (VALTYPE)) == MODE_INT \
1640 && GET_MODE_SIZE (TYPE_MODE (VALTYPE)) < UNITS_PER_WORD \
1641 && (TREE_CODE (VALTYPE) == INTEGER_TYPE \
1642 || TREE_CODE (VALTYPE) == ENUMERAL_TYPE \
1643 || TREE_CODE (VALTYPE) == BOOLEAN_TYPE \
1644 || TREE_CODE (VALTYPE) == CHAR_TYPE \
1645 || TREE_CODE (VALTYPE) == REAL_TYPE \
1646 || TREE_CODE (VALTYPE) == OFFSET_TYPE)) \
1647 && sh_promote_prototypes (VALTYPE) \
1648 ? (TARGET_SHMEDIA ? DImode : SImode) : TYPE_MODE (VALTYPE)), \
1649 BASE_RETURN_VALUE_REG (TYPE_MODE (VALTYPE)))
1651 /* Define how to find the value returned by a library function
1652 assuming the value has mode MODE. */
1653 #define LIBCALL_VALUE(MODE) \
1654 gen_rtx_REG ((MODE), BASE_RETURN_VALUE_REG (MODE));
1656 /* 1 if N is a possible register number for a function value. */
1657 #define FUNCTION_VALUE_REGNO_P(REGNO) \
1658 ((REGNO) == FIRST_RET_REG || (TARGET_SH2E && (REGNO) == FIRST_FP_RET_REG) \
1659 || (TARGET_SHMEDIA_FPU && (REGNO) == FIRST_FP_RET_REG))
1661 /* 1 if N is a possible register number for function argument passing. */
1662 /* ??? There are some callers that pass REGNO as int, and others that pass
1663 it as unsigned. We get warnings unless we do casts everywhere. */
1664 #define FUNCTION_ARG_REGNO_P(REGNO) \
1665 (((unsigned) (REGNO) >= (unsigned) FIRST_PARM_REG \
1666 && (unsigned) (REGNO) < (unsigned) (FIRST_PARM_REG + NPARM_REGS (SImode)))\
1667 || (TARGET_FPU_ANY \
1668 && (unsigned) (REGNO) >= (unsigned) FIRST_FP_PARM_REG \
1669 && (unsigned) (REGNO) < (unsigned) (FIRST_FP_PARM_REG \
1670 + NPARM_REGS (SFmode))))
1672 /* Define a data type for recording info about an argument list
1673 during the scan of that argument list. This data type should
1674 hold all necessary information about the function itself
1675 and about the args processed so far, enough to enable macros
1676 such as FUNCTION_ARG to determine where the next arg should go.
1678 On SH, this is a single integer, which is a number of words
1679 of arguments scanned so far (including the invisible argument,
1680 if any, which holds the structure-value-address).
1681 Thus NARGREGS or more means all following args should go on the stack. */
1683 enum sh_arg_class { SH_ARG_INT = 0, SH_ARG_FLOAT = 1 };
1687 /* Nonzero if a prototype is available for the function. */
1689 /* The number of an odd floating-point register, that should be used
1690 for the next argument of type float. */
1691 int free_single_fp_reg;
1692 /* Whether we're processing an outgoing function call. */
1694 /* The number of general-purpose registers that should have been
1695 used to pass partial arguments, that are passed totally on the
1696 stack. On SHcompact, a call trampoline will pop them off the
1697 stack before calling the actual function, and, if the called
1698 function is implemented in SHcompact mode, the incoming arguments
1699 decoder will push such arguments back onto the stack. For
1700 incoming arguments, STACK_REGS also takes into account other
1701 arguments passed by reference, that the decoder will also push
1704 /* The number of general-purpose registers that should have been
1705 used to pass arguments, if the arguments didn't have to be passed
1708 /* Set by SHCOMPACT_BYREF if the current argument is to be passed by
1712 /* call_cookie is a bitmask used by call expanders, as well as
1713 function prologue and epilogues, to allow SHcompact to comply
1714 with the SH5 32-bit ABI, that requires 64-bit registers to be
1715 used even though only the lower 32-bit half is visible in
1716 SHcompact mode. The strategy is to call SHmedia trampolines.
1718 The alternatives for each of the argument-passing registers are
1719 (a) leave it unchanged; (b) pop it off the stack; (c) load its
1720 contents from the address in it; (d) add 8 to it, storing the
1721 result in the next register, then (c); (e) copy it from some
1722 floating-point register,
1724 Regarding copies from floating-point registers, r2 may only be
1725 copied from dr0. r3 may be copied from dr0 or dr2. r4 maybe
1726 copied from dr0, dr2 or dr4. r5 maybe copied from dr0, dr2,
1727 dr4 or dr6. r6 may be copied from dr0, dr2, dr4, dr6 or dr8.
1728 r7 through to r9 may be copied from dr0, dr2, dr4, dr8, dr8 or
1731 The bit mask is structured as follows:
1733 - 1 bit to tell whether to set up a return trampoline.
1735 - 3 bits to count the number consecutive registers to pop off the
1738 - 4 bits for each of r9, r8, r7 and r6.
1740 - 3 bits for each of r5, r4, r3 and r2.
1742 - 3 bits set to 0 (the most significant ones)
1745 1098 7654 3210 9876 5432 1098 7654 3210
1746 FLPF LPFL PFLP FFLP FFLP FFLP FFLP SSST
1747 2223 3344 4555 6666 7777 8888 9999 SSS-
1749 - If F is set, the register must be copied from an FP register,
1750 whose number is encoded in the remaining bits.
1752 - Else, if L is set, the register must be loaded from the address
1753 contained in it. If the P bit is *not* set, the address of the
1754 following dword should be computed first, and stored in the
1757 - Else, if P is set, the register alone should be popped off the
1760 - After all this processing, the number of registers represented
1761 in SSS will be popped off the stack. This is an optimization
1762 for pushing/popping consecutive registers, typically used for
1763 varargs and large arguments partially passed in registers.
1765 - If T is set, a return trampoline will be set up for 64-bit
1766 return values to be split into 2 32-bit registers. */
1767 #define CALL_COOKIE_RET_TRAMP_SHIFT 0
1768 #define CALL_COOKIE_RET_TRAMP(VAL) ((VAL) << CALL_COOKIE_RET_TRAMP_SHIFT)
1769 #define CALL_COOKIE_STACKSEQ_SHIFT 1
1770 #define CALL_COOKIE_STACKSEQ(VAL) ((VAL) << CALL_COOKIE_STACKSEQ_SHIFT)
1771 #define CALL_COOKIE_STACKSEQ_GET(COOKIE) \
1772 (((COOKIE) >> CALL_COOKIE_STACKSEQ_SHIFT) & 7)
1773 #define CALL_COOKIE_INT_REG_SHIFT(REG) \
1774 (4 * (7 - (REG)) + (((REG) <= 2) ? ((REG) - 2) : 1) + 3)
1775 #define CALL_COOKIE_INT_REG(REG, VAL) \
1776 ((VAL) << CALL_COOKIE_INT_REG_SHIFT (REG))
1777 #define CALL_COOKIE_INT_REG_GET(COOKIE, REG) \
1778 (((COOKIE) >> CALL_COOKIE_INT_REG_SHIFT (REG)) & ((REG) < 4 ? 7 : 15))
1781 /* This is set to nonzero when the call in question must use the Renesas ABI,
1782 even without the -mrenesas option. */
1786 #define CUMULATIVE_ARGS struct sh_args
1788 #define GET_SH_ARG_CLASS(MODE) \
1789 ((TARGET_FPU_ANY && (MODE) == SFmode) \
1791 /* There's no mention of complex float types in the SH5 ABI, so we
1792 should presumably handle them as aggregate types. */ \
1793 : TARGET_SH5 && GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT \
1795 : TARGET_FPU_DOUBLE && (GET_MODE_CLASS (MODE) == MODE_FLOAT \
1796 || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) \
1797 ? SH_ARG_FLOAT : SH_ARG_INT)
1799 #define ROUND_ADVANCE(SIZE) \
1800 (((SIZE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
1802 /* Round a register number up to a proper boundary for an arg of mode
1805 The SH doesn't care about double alignment, so we only
1806 round doubles to even regs when asked to explicitly. */
1808 #define ROUND_REG(CUM, MODE) \
1809 (((TARGET_ALIGN_DOUBLE \
1810 || (TARGET_SH4 && ((MODE) == DFmode || (MODE) == DCmode) \
1811 && (CUM).arg_count[(int) SH_ARG_FLOAT] < NPARM_REGS (MODE)))\
1812 && GET_MODE_UNIT_SIZE ((MODE)) > UNITS_PER_WORD) \
1813 ? ((CUM).arg_count[(int) GET_SH_ARG_CLASS (MODE)] \
1814 + ((CUM).arg_count[(int) GET_SH_ARG_CLASS (MODE)] & 1)) \
1815 : (CUM).arg_count[(int) GET_SH_ARG_CLASS (MODE)])
1817 /* Initialize a variable CUM of type CUMULATIVE_ARGS
1818 for a call to a function whose data type is FNTYPE.
1819 For a library call, FNTYPE is 0.
1821 On SH, the offset always starts at 0: the first parm reg is always
1822 the same reg for a given argument class.
1824 For TARGET_HITACHI, the structure value pointer is passed in memory. */
1826 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \
1828 (CUM).arg_count[(int) SH_ARG_INT] = 0; \
1829 (CUM).arg_count[(int) SH_ARG_FLOAT] = 0; \
1830 (CUM).renesas_abi = sh_attr_renesas_p (FNTYPE) ? 1 : 0; \
1832 = ((TARGET_HITACHI || (CUM).renesas_abi) && (FNTYPE) \
1833 && aggregate_value_p (TREE_TYPE (FNTYPE), (FNDECL))); \
1834 (CUM).prototype_p = (FNTYPE) && TYPE_ARG_TYPES (FNTYPE); \
1835 (CUM).arg_count[(int) SH_ARG_INT] \
1836 = (TARGET_SH5 && (FNTYPE) \
1837 && aggregate_value_p (TREE_TYPE (FNTYPE), (FNDECL))); \
1838 (CUM).free_single_fp_reg = 0; \
1839 (CUM).outgoing = 1; \
1840 (CUM).stack_regs = 0; \
1841 (CUM).byref_regs = 0; \
1844 = (CALL_COOKIE_RET_TRAMP \
1845 (TARGET_SHCOMPACT && (FNTYPE) \
1846 && (CUM).arg_count[(int) SH_ARG_INT] == 0 \
1847 && (TYPE_MODE (TREE_TYPE (FNTYPE)) == BLKmode \
1848 ? int_size_in_bytes (TREE_TYPE (FNTYPE)) \
1849 : GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (FNTYPE)))) > 4 \
1850 && (BASE_RETURN_VALUE_REG (TYPE_MODE (TREE_TYPE \
1852 == FIRST_RET_REG))); \
1855 #define INIT_CUMULATIVE_LIBCALL_ARGS(CUM, MODE, LIBNAME) \
1857 INIT_CUMULATIVE_ARGS ((CUM), NULL_TREE, (LIBNAME), 0, 0); \
1859 = (CALL_COOKIE_RET_TRAMP \
1860 (TARGET_SHCOMPACT && GET_MODE_SIZE (MODE) > 4 \
1861 && BASE_RETURN_VALUE_REG (MODE) == FIRST_RET_REG)); \
1864 #define INIT_CUMULATIVE_INCOMING_ARGS(CUM, FNTYPE, LIBNAME) \
1866 INIT_CUMULATIVE_ARGS ((CUM), (FNTYPE), (LIBNAME), 0, 0); \
1867 (CUM).outgoing = 0; \
1870 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
1871 sh_function_arg_advance (&(CUM), (MODE), (TYPE), (NAMED))
1872 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
1873 sh_function_arg (&(CUM), (MODE), (TYPE), (NAMED))
1875 /* Return boolean indicating arg of mode MODE will be passed in a reg.
1876 This macro is only used in this file. */
1878 #define PASS_IN_REG_P(CUM, MODE, TYPE) \
1880 || (! TREE_ADDRESSABLE ((tree)(TYPE)) \
1881 && (! (TARGET_HITACHI || (CUM).renesas_abi) \
1882 || ! (AGGREGATE_TYPE_P (TYPE) \
1883 || (!TARGET_FPU_ANY \
1884 && (GET_MODE_CLASS (MODE) == MODE_FLOAT \
1885 && GET_MODE_SIZE (MODE) > GET_MODE_SIZE (SFmode))))))) \
1886 && ! (CUM).force_mem \
1888 ? ((MODE) == BLKmode \
1889 ? (((CUM).arg_count[(int) SH_ARG_INT] * UNITS_PER_WORD \
1890 + int_size_in_bytes (TYPE)) \
1891 <= NPARM_REGS (SImode) * UNITS_PER_WORD) \
1892 : ((ROUND_REG((CUM), (MODE)) \
1893 + HARD_REGNO_NREGS (BASE_ARG_REG (MODE), (MODE))) \
1894 <= NPARM_REGS (MODE))) \
1895 : ROUND_REG ((CUM), (MODE)) < NPARM_REGS (MODE)))
1897 /* By accident we got stuck with passing SCmode on SH4 little endian
1898 in two registers that are nominally successive - which is different from
1899 two single SFmode values, where we take endianness translation into
1900 account. That does not work at all if an odd number of registers is
1901 already in use, so that got fixed, but library functions are still more
1902 likely to use complex numbers without mixing them with SFmode arguments
1903 (which in C would have to be structures), so for the sake of ABI
1904 compatibility the way SCmode values are passed when an even number of
1905 FP registers is in use remains different from a pair of SFmode values for
1908 foo (double); a: fr5,fr4
1909 foo (float a, float b); a: fr5 b: fr4
1910 foo (__complex float a); a.real fr4 a.imag: fr5 - for consistency,
1911 this should be the other way round...
1912 foo (float a, __complex float b); a: fr5 b.real: fr4 b.imag: fr7 */
1913 #define FUNCTION_ARG_SCmode_WART 1
1915 /* Whether an argument must be passed by reference. On SHcompact, we
1916 pretend arguments wider than 32-bits that would have been passed in
1917 registers are passed by reference, so that an SHmedia trampoline
1918 loads them into the full 64-bits registers. */
1919 #define FUNCTION_ARG_PASS_BY_REFERENCE(CUM,MODE,TYPE,NAMED) \
1920 (MUST_PASS_IN_STACK ((MODE), (TYPE)) \
1921 || SHCOMPACT_BYREF ((CUM), (MODE), (TYPE), (NAMED)))
1923 #define SHCOMPACT_BYREF(CUM, MODE, TYPE, NAMED) \
1925 = (TARGET_SHCOMPACT \
1926 && (CUM).arg_count[(int) SH_ARG_INT] < NPARM_REGS (SImode) \
1927 && (! (NAMED) || GET_SH_ARG_CLASS (MODE) == SH_ARG_INT \
1928 || (GET_SH_ARG_CLASS (MODE) == SH_ARG_FLOAT \
1929 && ((CUM).arg_count[(int) SH_ARG_FLOAT] \
1930 >= NPARM_REGS (SFmode)))) \
1931 && ((MODE) == BLKmode ? int_size_in_bytes (TYPE) \
1932 : GET_MODE_SIZE (MODE)) > 4 \
1933 && ! SHCOMPACT_FORCE_ON_STACK ((MODE), (TYPE)) \
1934 && ! SH5_WOULD_BE_PARTIAL_NREGS ((CUM), (MODE), \
1936 ? ((MODE) == BLKmode ? int_size_in_bytes (TYPE) \
1937 : GET_MODE_SIZE (MODE)) \
1940 /* If an argument of size 5, 6 or 7 bytes is to be passed in a 64-bit
1941 register in SHcompact mode, it must be padded in the most
1942 significant end. This means that passing it by reference wouldn't
1943 pad properly on a big-endian machine. In this particular case, we
1944 pass this argument on the stack, in a way that the call trampoline
1945 will load its value into the appropriate register. */
1946 #define SHCOMPACT_FORCE_ON_STACK(MODE,TYPE) \
1947 ((MODE) == BLKmode \
1948 && TARGET_SHCOMPACT \
1949 && ! TARGET_LITTLE_ENDIAN \
1950 && int_size_in_bytes (TYPE) > 4 \
1951 && int_size_in_bytes (TYPE) < 8)
1953 /* Minimum alignment for an argument to be passed by callee-copy
1954 reference. We need such arguments to be aligned to 8 byte
1955 boundaries, because they'll be loaded using quad loads. */
1956 #define SH_MIN_ALIGN_FOR_CALLEE_COPY (8 * BITS_PER_UNIT)
1958 #define FUNCTION_ARG_CALLEE_COPIES(CUM,MODE,TYPE,NAMED) \
1960 && (((MODE) == BLKmode ? TYPE_ALIGN (TYPE) \
1961 : GET_MODE_ALIGNMENT (MODE)) \
1962 % SH_MIN_ALIGN_FOR_CALLEE_COPY == 0))
1964 /* The SH5 ABI requires floating-point arguments to be passed to
1965 functions without a prototype in both an FP register and a regular
1966 register or the stack. When passing the argument in both FP and
1967 general-purpose registers, list the FP register first. */
1968 #define SH5_PROTOTYPELESS_FLOAT_ARG(CUM,MODE) \
1974 ((CUM).arg_count[(int) SH_ARG_INT] < NPARM_REGS (SImode) \
1975 ? gen_rtx_REG ((MODE), FIRST_FP_PARM_REG \
1976 + (CUM).arg_count[(int) SH_ARG_FLOAT]) \
1981 ((CUM).arg_count[(int) SH_ARG_INT] < NPARM_REGS (SImode) \
1982 ? gen_rtx_REG ((MODE), FIRST_PARM_REG \
1983 + (CUM).arg_count[(int) SH_ARG_INT]) \
1984 : gen_rtx_REG ((MODE), FIRST_FP_PARM_REG \
1985 + (CUM).arg_count[(int) SH_ARG_FLOAT])), \
1988 /* The SH5 ABI requires regular registers or stack slots to be
1989 reserved for floating-point arguments. Registers are taken care of
1990 in FUNCTION_ARG_ADVANCE, but stack slots must be reserved here.
1991 Unfortunately, there's no way to just reserve a stack slot, so
1992 we'll end up needlessly storing a copy of the argument in the
1993 stack. For incoming arguments, however, the PARALLEL will be
1994 optimized to the register-only form, and the value in the stack
1995 slot won't be used at all. */
1996 #define SH5_PROTOTYPED_FLOAT_ARG(CUM,MODE,REG) \
1997 ((CUM).arg_count[(int) SH_ARG_INT] < NPARM_REGS (SImode) \
1998 ? gen_rtx_REG ((MODE), (REG)) \
1999 : gen_rtx_PARALLEL ((MODE), \
2002 (VOIDmode, NULL_RTX, \
2005 (VOIDmode, gen_rtx_REG ((MODE), \
2009 /* For an arg passed partly in registers and partly in memory,
2010 this is the number of registers used.
2011 For args passed entirely in registers or entirely in memory, zero.
2013 We sometimes split args. */
2015 #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \
2017 && PASS_IN_REG_P ((CUM), (MODE), (TYPE)) \
2019 && (ROUND_REG ((CUM), (MODE)) \
2020 + ((MODE) != BLKmode \
2021 ? ROUND_ADVANCE (GET_MODE_SIZE (MODE)) \
2022 : ROUND_ADVANCE (int_size_in_bytes (TYPE))) \
2023 > NPARM_REGS (MODE))) \
2024 ? NPARM_REGS (MODE) - ROUND_REG ((CUM), (MODE)) \
2025 : (SH5_WOULD_BE_PARTIAL_NREGS ((CUM), (MODE), (TYPE), (NAMED)) \
2026 && ! TARGET_SHCOMPACT) \
2027 ? NPARM_REGS (SImode) - (CUM).arg_count[(int) SH_ARG_INT] \
2030 #define SH5_WOULD_BE_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \
2032 && ((MODE) == BLKmode || (MODE) == TImode || (MODE) == CDImode \
2033 || (MODE) == DCmode) \
2034 && ((CUM).arg_count[(int) SH_ARG_INT] \
2035 + (int_size_in_bytes (TYPE) + 7) / 8) > NPARM_REGS (SImode))
2037 /* Perform any needed actions needed for a function that is receiving a
2038 variable number of arguments. */
2040 /* Implement `va_start' for varargs and stdarg. */
2041 #define EXPAND_BUILTIN_VA_START(valist, nextarg) \
2042 sh_va_start (valist, nextarg)
2044 /* Implement `va_arg'. */
2045 #define EXPAND_BUILTIN_VA_ARG(valist, type) \
2046 sh_va_arg (valist, type)
2048 /* Call the function profiler with a given profile label.
2049 We use two .aligns, so as to make sure that both the .long is aligned
2050 on a 4 byte boundary, and that the .long is a fixed distance (2 bytes)
2051 from the trapa instruction. */
2053 #define FUNCTION_PROFILER(STREAM,LABELNO) \
2055 fprintf((STREAM), "\t.align\t2\n"); \
2056 fprintf((STREAM), "\ttrapa\t#33\n"); \
2057 fprintf((STREAM), "\t.align\t2\n"); \
2058 asm_fprintf((STREAM), "\t.long\t%LLP%d\n", (LABELNO)); \
2061 /* Define this macro if the code for function profiling should come
2062 before the function prologue. Normally, the profiling code comes
2065 #define PROFILE_BEFORE_PROLOGUE
2067 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
2068 the stack pointer does not matter. The value is tested only in
2069 functions that have frame pointers.
2070 No definition is equivalent to always zero. */
2072 #define EXIT_IGNORE_STACK 1
2075 On the SH, the trampoline looks like
2076 2 0002 D202 mov.l l2,r2
2077 1 0000 D301 mov.l l1,r3
2080 5 0008 00000000 l1: .long area
2081 6 000c 00000000 l2: .long function */
2083 /* Length in units of the trampoline for entering a nested function. */
2084 #define TRAMPOLINE_SIZE (TARGET_SHMEDIA64 ? 40 : TARGET_SH5 ? 24 : 16)
2086 /* Alignment required for a trampoline in bits . */
2087 #define TRAMPOLINE_ALIGNMENT \
2088 ((CACHE_LOG < 3 || (TARGET_SMALLCODE && ! TARGET_HARVARD)) ? 32 \
2089 : TARGET_SHMEDIA ? 256 : 64)
2091 /* Emit RTL insns to initialize the variable parts of a trampoline.
2092 FNADDR is an RTX for the address of the function's pure code.
2093 CXT is an RTX for the static chain value for the function. */
2095 #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
2096 sh_initialize_trampoline ((TRAMP), (FNADDR), (CXT))
2098 /* On SH5, trampolines are SHmedia code, so add 1 to the address. */
2100 #define TRAMPOLINE_ADJUST_ADDRESS(TRAMP) do \
2102 if (TARGET_SHMEDIA) \
2103 (TRAMP) = expand_simple_binop (Pmode, PLUS, (TRAMP), const1_rtx, \
2104 gen_reg_rtx (Pmode), 0, \
2108 /* A C expression whose value is RTL representing the value of the return
2109 address for the frame COUNT steps up from the current frame.
2110 FRAMEADDR is already the frame pointer of the COUNT frame, so we
2111 can ignore COUNT. */
2113 #define RETURN_ADDR_RTX(COUNT, FRAME) \
2114 (((COUNT) == 0) ? sh_get_pr_initial_val () : (rtx) 0)
2116 /* A C expression whose value is RTL representing the location of the
2117 incoming return address at the beginning of any function, before the
2118 prologue. This RTL is either a REG, indicating that the return
2119 value is saved in REG, or a MEM representing a location in
2121 #define INCOMING_RETURN_ADDR_RTX \
2122 gen_rtx_REG (Pmode, TARGET_SHMEDIA ? PR_MEDIA_REG : PR_REG)
2124 /* Addressing modes, and classification of registers for them. */
2125 #define HAVE_POST_INCREMENT TARGET_SH1
2126 #define HAVE_PRE_DECREMENT TARGET_SH1
2128 #define USE_LOAD_POST_INCREMENT(mode) ((mode == SImode || mode == DImode) \
2130 #define USE_LOAD_PRE_DECREMENT(mode) 0
2131 #define USE_STORE_POST_INCREMENT(mode) 0
2132 #define USE_STORE_PRE_DECREMENT(mode) ((mode == SImode || mode == DImode) \
2135 #define MOVE_BY_PIECES_P(SIZE, ALIGN) (move_by_pieces_ninsns (SIZE, ALIGN) \
2136 < (TARGET_SMALLCODE ? 2 : \
2137 ((ALIGN >= 32) ? 16 : 2)))
2139 /* Macros to check register numbers against specific register classes. */
2141 /* These assume that REGNO is a hard or pseudo reg number.
2142 They give nonzero only if REGNO is a hard reg of the suitable class
2143 or a pseudo reg currently allocated to a suitable hard reg.
2144 Since they use reg_renumber, they are safe only once reg_renumber
2145 has been allocated, which happens in local-alloc.c. */
2147 #define REGNO_OK_FOR_BASE_P(REGNO) \
2148 (GENERAL_OR_AP_REGISTER_P (REGNO) \
2149 || GENERAL_OR_AP_REGISTER_P (reg_renumber[(REGNO)]))
2150 #define REGNO_OK_FOR_INDEX_P(REGNO) \
2152 ? (GENERAL_REGISTER_P (REGNO) \
2153 || GENERAL_REGISTER_P ((unsigned) reg_renumber[(REGNO)])) \
2154 : (REGNO) == R0_REG || (unsigned) reg_renumber[(REGNO)] == R0_REG)
2156 /* Maximum number of registers that can appear in a valid memory
2159 #define MAX_REGS_PER_ADDRESS 2
2161 /* Recognize any constant value that is a valid address. */
2163 #define CONSTANT_ADDRESS_P(X) (GET_CODE (X) == LABEL_REF)
2165 /* Nonzero if the constant value X is a legitimate general operand. */
2167 #define LEGITIMATE_CONSTANT_P(X) \
2169 ? ((GET_MODE (X) != DFmode \
2170 && GET_MODE_CLASS (GET_MODE (X)) != MODE_VECTOR_FLOAT) \
2171 || (X) == CONST0_RTX (GET_MODE (X)) \
2172 || ! TARGET_SHMEDIA_FPU \
2173 || TARGET_SHMEDIA64) \
2174 : (GET_CODE (X) != CONST_DOUBLE \
2175 || GET_MODE (X) == DFmode || GET_MODE (X) == SFmode \
2176 || (TARGET_SH2E && (fp_zero_operand (X) || fp_one_operand (X)))))
2178 /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
2179 and check its validity for a certain class.
2180 We have two alternate definitions for each of them.
2181 The usual definition accepts all pseudo regs; the other rejects
2182 them unless they have been allocated suitable hard regs.
2183 The symbol REG_OK_STRICT causes the latter definition to be used. */
2185 #ifndef REG_OK_STRICT
2187 /* Nonzero if X is a hard reg that can be used as a base reg
2188 or if it is a pseudo reg. */
2189 #define REG_OK_FOR_BASE_P(X) \
2190 (GENERAL_OR_AP_REGISTER_P (REGNO (X)) || REGNO (X) >= FIRST_PSEUDO_REGISTER)
2192 /* Nonzero if X is a hard reg that can be used as an index
2193 or if it is a pseudo reg. */
2194 #define REG_OK_FOR_INDEX_P(X) \
2195 ((TARGET_SHMEDIA ? GENERAL_REGISTER_P (REGNO (X)) \
2196 : REGNO (X) == R0_REG) || REGNO (X) >= FIRST_PSEUDO_REGISTER)
2198 /* Nonzero if X/OFFSET is a hard reg that can be used as an index
2199 or if X is a pseudo reg. */
2200 #define SUBREG_OK_FOR_INDEX_P(X, OFFSET) \
2201 ((TARGET_SHMEDIA ? GENERAL_REGISTER_P (REGNO (X)) \
2202 : REGNO (X) == R0_REG && OFFSET == 0) || REGNO (X) >= FIRST_PSEUDO_REGISTER)
2206 /* Nonzero if X is a hard reg that can be used as a base reg. */
2207 #define REG_OK_FOR_BASE_P(X) \
2208 REGNO_OK_FOR_BASE_P (REGNO (X))
2210 /* Nonzero if X is a hard reg that can be used as an index. */
2211 #define REG_OK_FOR_INDEX_P(X) \
2212 REGNO_OK_FOR_INDEX_P (REGNO (X))
2214 /* Nonzero if X/OFFSET is a hard reg that can be used as an index. */
2215 #define SUBREG_OK_FOR_INDEX_P(X, OFFSET) \
2216 (REGNO_OK_FOR_INDEX_P (REGNO (X)) && (OFFSET) == 0)
2220 /* The 'Q' constraint is a pc relative load operand. */
2221 #define EXTRA_CONSTRAINT_Q(OP) \
2222 (GET_CODE (OP) == MEM \
2223 && ((GET_CODE (XEXP ((OP), 0)) == LABEL_REF) \
2224 || (GET_CODE (XEXP ((OP), 0)) == CONST \
2225 && GET_CODE (XEXP (XEXP ((OP), 0), 0)) == PLUS \
2226 && GET_CODE (XEXP (XEXP (XEXP ((OP), 0), 0), 0)) == LABEL_REF \
2227 && GET_CODE (XEXP (XEXP (XEXP ((OP), 0), 0), 1)) == CONST_INT)))
2229 /* Extra address constraints. */
2230 #define EXTRA_CONSTRAINT_A(OP, STR) 0
2232 /* Constraint for selecting FLDI0 or FLDI1 instruction. If the clobber
2233 operand is not SCRATCH (i.e. REG) then R0 is probably being
2234 used, hence mova is being used, hence do not select this pattern */
2235 #define EXTRA_CONSTRAINT_Bsc(OP) (GET_CODE(OP) == SCRATCH)
2236 #define EXTRA_CONSTRAINT_B(OP, STR) \
2237 ((STR)[1] == 's' && (STR)[2] == 'c' ? EXTRA_CONSTRAINT_Bsc (OP) \
2240 /* The `C16' constraint is a 16-bit constant, literal or symbolic. */
2241 #define EXTRA_CONSTRAINT_C16(OP) \
2242 (GET_CODE (OP) == CONST \
2243 && GET_CODE (XEXP ((OP), 0)) == SIGN_EXTEND \
2244 && GET_MODE (XEXP ((OP), 0)) == DImode \
2245 && GET_CODE (XEXP (XEXP ((OP), 0), 0)) == TRUNCATE \
2246 && GET_MODE (XEXP (XEXP ((OP), 0), 0)) == HImode \
2247 && (MOVI_SHORI_BASE_OPERAND_P (XEXP (XEXP (XEXP ((OP), 0), 0), 0)) \
2248 || (GET_CODE (XEXP (XEXP (XEXP ((OP), 0), 0), 0)) == ASHIFTRT \
2249 && (MOVI_SHORI_BASE_OPERAND_P \
2250 (XEXP (XEXP (XEXP (XEXP ((OP), 0), 0), 0), 0))) \
2251 && GET_CODE (XEXP (XEXP (XEXP (XEXP ((OP), 0), 0), 0), \
2254 /* Check whether OP is a datalabel unspec. */
2255 #define DATALABEL_REF_NO_CONST_P(OP) \
2256 (GET_CODE (OP) == UNSPEC \
2257 && XINT ((OP), 1) == UNSPEC_DATALABEL \
2258 && XVECLEN ((OP), 0) == 1 \
2259 && (GET_CODE (XVECEXP ((OP), 0, 0)) == SYMBOL_REF \
2260 || GET_CODE (XVECEXP ((OP), 0, 0)) == LABEL_REF))
2262 /* Check whether OP is a datalabel unspec, possibly enclosed within a
2264 #define DATALABEL_REF_P(OP) \
2265 ((GET_CODE (OP) == CONST && DATALABEL_REF_NO_CONST_P (XEXP ((OP), 0))) \
2266 || DATALABEL_REF_NO_CONST_P (OP))
2268 #define GOT_ENTRY_P(OP) \
2269 (GET_CODE (OP) == CONST && GET_CODE (XEXP ((OP), 0)) == UNSPEC \
2270 && XINT (XEXP ((OP), 0), 1) == UNSPEC_GOT)
2272 #define GOTPLT_ENTRY_P(OP) \
2273 (GET_CODE (OP) == CONST && GET_CODE (XEXP ((OP), 0)) == UNSPEC \
2274 && XINT (XEXP ((OP), 0), 1) == UNSPEC_GOTPLT)
2276 #define UNSPEC_GOTOFF_P(OP) \
2277 (GET_CODE (OP) == UNSPEC && XINT ((OP), 1) == UNSPEC_GOTOFF)
2279 #define GOTOFF_P(OP) \
2280 (GET_CODE (OP) == CONST \
2281 && (UNSPEC_GOTOFF_P (XEXP ((OP), 0)) \
2282 || (GET_CODE (XEXP ((OP), 0)) == PLUS \
2283 && UNSPEC_GOTOFF_P (XEXP (XEXP ((OP), 0), 0)) \
2284 && GET_CODE (XEXP (XEXP ((OP), 0), 1)) == CONST_INT)))
2286 #define PIC_ADDR_P(OP) \
2287 (GET_CODE (OP) == CONST && GET_CODE (XEXP ((OP), 0)) == UNSPEC \
2288 && XINT (XEXP ((OP), 0), 1) == UNSPEC_PIC)
2290 #define PIC_OFFSET_P(OP) \
2292 && GET_CODE (XVECEXP (XEXP ((OP), 0), 0, 0)) == MINUS \
2293 && reg_mentioned_p (pc_rtx, XEXP (XVECEXP (XEXP ((OP), 0), 0, 0), 1)))
2295 #define PIC_DIRECT_ADDR_P(OP) \
2296 (PIC_ADDR_P (OP) && GET_CODE (XVECEXP (XEXP ((OP), 0), 0, 0)) != MINUS)
2298 #define NON_PIC_REFERENCE_P(OP) \
2299 (GET_CODE (OP) == LABEL_REF || GET_CODE (OP) == SYMBOL_REF \
2300 || DATALABEL_REF_P (OP) \
2301 || (GET_CODE (OP) == CONST && GET_CODE (XEXP ((OP), 0)) == PLUS \
2302 && (GET_CODE (XEXP (XEXP ((OP), 0), 0)) == SYMBOL_REF \
2303 || DATALABEL_REF_P (XEXP (XEXP ((OP), 0), 0))) \
2304 && GET_CODE (XEXP (XEXP ((OP), 0), 1)) == CONST_INT))
2306 #define PIC_REFERENCE_P(OP) \
2307 (GOT_ENTRY_P (OP) || GOTPLT_ENTRY_P (OP) \
2308 || GOTOFF_P (OP) || PIC_ADDR_P (OP))
2310 #define MOVI_SHORI_BASE_OPERAND_P(OP) \
2312 ? (GOT_ENTRY_P (OP) || GOTPLT_ENTRY_P (OP) || GOTOFF_P (OP) \
2313 || PIC_OFFSET_P (OP)) \
2314 : NON_PIC_REFERENCE_P (OP))
2316 /* The `Csy' constraint is a label or a symbol. */
2317 #define EXTRA_CONSTRAINT_Csy(OP) \
2318 (NON_PIC_REFERENCE_P (OP) || PIC_DIRECT_ADDR_P (OP))
2320 /* A zero in any shape or form. */
2321 #define EXTRA_CONSTRAINT_Z(OP) \
2322 ((OP) == CONST0_RTX (GET_MODE (OP)))
2324 /* Any vector constant we can handle. */
2325 #define EXTRA_CONSTRAINT_W(OP) \
2326 (GET_CODE (OP) == CONST_VECTOR \
2327 && (sh_rep_vec ((OP), VOIDmode) \
2328 || (HOST_BITS_PER_WIDE_INT >= 64 \
2329 ? sh_const_vec ((OP), VOIDmode) \
2330 : sh_1el_vec ((OP), VOIDmode))))
2332 /* A non-explicit constant that can be loaded directly into a general purpose
2333 register. This is like 's' except we don't allow PIC_DIRECT_ADDR_P. */
2334 #define EXTRA_CONSTRAINT_Cpg(OP) \
2336 && GET_CODE (OP) != CONST_INT \
2337 && GET_CODE (OP) != CONST_DOUBLE \
2339 || (LEGITIMATE_PIC_OPERAND_P (OP) \
2340 && (! PIC_ADDR_P (OP) || PIC_OFFSET_P (OP)) \
2341 && GET_CODE (OP) != LABEL_REF)))
2342 #define EXTRA_CONSTRAINT_C(OP, STR) \
2343 ((STR)[1] == '1' && (STR)[2] == '6' ? EXTRA_CONSTRAINT_C16 (OP) \
2344 : (STR)[1] == 's' && (STR)[2] == 'y' ? EXTRA_CONSTRAINT_Csy (OP) \
2345 : (STR)[1] == 'p' && (STR)[2] == 'g' ? EXTRA_CONSTRAINT_Cpg (OP) \
2348 #define EXTRA_MEMORY_CONSTRAINT(C,STR) ((C) == 'S')
2349 #define EXTRA_CONSTRAINT_Sr0(OP) \
2350 (memory_operand((OP), GET_MODE (OP)) \
2351 && ! refers_to_regno_p (R0_REG, R0_REG + 1, OP, (rtx *)0))
2352 #define EXTRA_CONSTRAINT_S(OP, STR) \
2353 ((STR)[1] == 'r' && (STR)[2] == '0' ? EXTRA_CONSTRAINT_Sr0 (OP) \
2356 #define EXTRA_CONSTRAINT_STR(OP, C, STR) \
2357 ((C) == 'Q' ? EXTRA_CONSTRAINT_Q (OP) \
2358 : (C) == 'A' ? EXTRA_CONSTRAINT_A ((OP), (STR)) \
2359 : (C) == 'B' ? EXTRA_CONSTRAINT_B ((OP), (STR)) \
2360 : (C) == 'C' ? EXTRA_CONSTRAINT_C ((OP), (STR)) \
2361 : (C) == 'S' ? EXTRA_CONSTRAINT_S ((OP), (STR)) \
2362 : (C) == 'W' ? EXTRA_CONSTRAINT_W (OP) \
2363 : (C) == 'Z' ? EXTRA_CONSTRAINT_Z (OP) \
2366 /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
2367 that is a valid memory address for an instruction.
2368 The MODE argument is the machine mode for the MEM expression
2369 that wants to use this address. */
2371 #define MODE_DISP_OK_4(X,MODE) \
2372 (GET_MODE_SIZE (MODE) == 4 && (unsigned) INTVAL (X) < 64 \
2373 && ! (INTVAL (X) & 3) && ! (TARGET_SH2E && (MODE) == SFmode))
2375 #define MODE_DISP_OK_8(X,MODE) \
2376 ((GET_MODE_SIZE(MODE)==8) && ((unsigned)INTVAL(X)<60) \
2377 && ! (INTVAL(X) & 3) && ! (TARGET_SH4 && (MODE) == DFmode))
2379 #define BASE_REGISTER_RTX_P(X) \
2380 ((GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) \
2381 || (GET_CODE (X) == SUBREG \
2382 && GET_CODE (SUBREG_REG (X)) == REG \
2383 && REG_OK_FOR_BASE_P (SUBREG_REG (X))))
2385 /* Since this must be r0, which is a single register class, we must check
2386 SUBREGs more carefully, to be sure that we don't accept one that extends
2387 outside the class. */
2388 #define INDEX_REGISTER_RTX_P(X) \
2389 ((GET_CODE (X) == REG && REG_OK_FOR_INDEX_P (X)) \
2390 || (GET_CODE (X) == SUBREG \
2391 && GET_CODE (SUBREG_REG (X)) == REG \
2392 && SUBREG_OK_FOR_INDEX_P (SUBREG_REG (X), SUBREG_BYTE (X))))
2394 /* Jump to LABEL if X is a valid address RTX. This must also take
2395 REG_OK_STRICT into account when deciding about valid registers, but it uses
2396 the above macros so we are in luck.
2404 /* ??? The SH2e does not have the REG+disp addressing mode when loading values
2405 into the FRx registers. We implement this by setting the maximum offset
2406 to zero when the value is SFmode. This also restricts loading of SFmode
2407 values into the integer registers, but that can't be helped. */
2409 /* The SH allows a displacement in a QI or HI amode, but only when the
2410 other operand is R0. GCC doesn't handle this very well, so we forgo
2413 A legitimate index for a QI or HI is 0, SI can be any number 0..63,
2414 DI can be any number 0..60. */
2416 #define GO_IF_LEGITIMATE_INDEX(MODE, OP, LABEL) \
2418 if (GET_CODE (OP) == CONST_INT) \
2420 if (TARGET_SHMEDIA) \
2422 int MODE_SIZE = GET_MODE_SIZE (MODE); \
2423 if (! (INTVAL (OP) & (MODE_SIZE - 1)) \
2424 && INTVAL (OP) >= -512 * MODE_SIZE \
2425 && INTVAL (OP) < 512 * MODE_SIZE) \
2430 if (MODE_DISP_OK_4 ((OP), (MODE))) goto LABEL; \
2431 if (MODE_DISP_OK_8 ((OP), (MODE))) goto LABEL; \
2435 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \
2437 if (BASE_REGISTER_RTX_P (X)) \
2439 else if ((GET_CODE (X) == POST_INC || GET_CODE (X) == PRE_DEC) \
2440 && ! TARGET_SHMEDIA \
2441 && BASE_REGISTER_RTX_P (XEXP ((X), 0))) \
2443 else if (GET_CODE (X) == PLUS \
2444 && ((MODE) != PSImode || reload_completed)) \
2446 rtx xop0 = XEXP ((X), 0); \
2447 rtx xop1 = XEXP ((X), 1); \
2448 if (GET_MODE_SIZE (MODE) <= 8 && BASE_REGISTER_RTX_P (xop0)) \
2449 GO_IF_LEGITIMATE_INDEX ((MODE), xop1, LABEL); \
2450 if (GET_MODE_SIZE (MODE) <= 4 \
2451 || (TARGET_SHMEDIA && GET_MODE_SIZE (MODE) <= 8) \
2452 || (TARGET_SH4 && TARGET_FMOVD && MODE == DFmode)) \
2454 if (BASE_REGISTER_RTX_P (xop1) && INDEX_REGISTER_RTX_P (xop0))\
2456 if (INDEX_REGISTER_RTX_P (xop1) && BASE_REGISTER_RTX_P (xop0))\
2462 /* Try machine-dependent ways of modifying an illegitimate address
2463 to be legitimate. If we find one, return the new, valid address.
2464 This macro is used in only one place: `memory_address' in explow.c.
2466 OLDX is the address as it was before break_out_memory_refs was called.
2467 In some cases it is useful to look at this to decide what needs to be done.
2469 MODE and WIN are passed so that this macro can use
2470 GO_IF_LEGITIMATE_ADDRESS.
2472 It is always safe for this macro to do nothing. It exists to recognize
2473 opportunities to optimize the output.
2475 For the SH, if X is almost suitable for indexing, but the offset is
2476 out of range, convert it into a normal form so that cse has a chance
2477 of reducing the number of address registers used. */
2479 #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) \
2482 (X) = legitimize_pic_address (OLDX, MODE, NULL_RTX); \
2483 if (GET_CODE (X) == PLUS \
2484 && (GET_MODE_SIZE (MODE) == 4 \
2485 || GET_MODE_SIZE (MODE) == 8) \
2486 && GET_CODE (XEXP ((X), 1)) == CONST_INT \
2487 && BASE_REGISTER_RTX_P (XEXP ((X), 0)) \
2488 && ! TARGET_SHMEDIA \
2489 && ! (TARGET_SH4 && (MODE) == DFmode) \
2490 && ! (TARGET_SH2E && (MODE) == SFmode)) \
2492 rtx index_rtx = XEXP ((X), 1); \
2493 HOST_WIDE_INT offset = INTVAL (index_rtx), offset_base; \
2496 GO_IF_LEGITIMATE_INDEX ((MODE), index_rtx, WIN); \
2497 /* On rare occasions, we might get an unaligned pointer \
2498 that is indexed in a way to give an aligned address. \
2499 Therefore, keep the lower two bits in offset_base. */ \
2500 /* Instead of offset_base 128..131 use 124..127, so that \
2501 simple add suffices. */ \
2504 offset_base = ((offset + 4) & ~60) - 4; \
2507 offset_base = offset & ~60; \
2508 /* Sometimes the normal form does not suit DImode. We \
2509 could avoid that by using smaller ranges, but that \
2510 would give less optimized code when SImode is \
2512 if (GET_MODE_SIZE (MODE) + offset - offset_base <= 64) \
2514 sum = expand_binop (Pmode, add_optab, XEXP ((X), 0), \
2515 GEN_INT (offset_base), NULL_RTX, 0, \
2518 (X) = gen_rtx_PLUS (Pmode, sum, GEN_INT (offset - offset_base)); \
2524 /* A C compound statement that attempts to replace X, which is an address
2525 that needs reloading, with a valid memory address for an operand of
2526 mode MODE. WIN is a C statement label elsewhere in the code.
2528 Like for LEGITIMIZE_ADDRESS, for the SH we try to get a normal form
2529 of the address. That will allow inheritance of the address reloads. */
2531 #define LEGITIMIZE_RELOAD_ADDRESS(X,MODE,OPNUM,TYPE,IND_LEVELS,WIN) \
2533 if (GET_CODE (X) == PLUS \
2534 && (GET_MODE_SIZE (MODE) == 4 || GET_MODE_SIZE (MODE) == 8) \
2535 && GET_CODE (XEXP (X, 1)) == CONST_INT \
2536 && BASE_REGISTER_RTX_P (XEXP (X, 0)) \
2537 && ! TARGET_SHMEDIA \
2538 && ! (TARGET_SH4 && (MODE) == DFmode) \
2539 && ! ((MODE) == PSImode && (TYPE) == RELOAD_FOR_INPUT_ADDRESS)) \
2541 rtx index_rtx = XEXP (X, 1); \
2542 HOST_WIDE_INT offset = INTVAL (index_rtx), offset_base; \
2545 if (TARGET_SH2E && MODE == SFmode) \
2548 push_reload (index_rtx, NULL_RTX, &XEXP (X, 1), NULL, \
2549 INDEX_REG_CLASS, Pmode, VOIDmode, 0, 0, (OPNUM), \
2553 /* Instead of offset_base 128..131 use 124..127, so that \
2554 simple add suffices. */ \
2557 offset_base = ((offset + 4) & ~60) - 4; \
2560 offset_base = offset & ~60; \
2561 /* Sometimes the normal form does not suit DImode. We \
2562 could avoid that by using smaller ranges, but that \
2563 would give less optimized code when SImode is \
2565 if (GET_MODE_SIZE (MODE) + offset - offset_base <= 64) \
2567 sum = gen_rtx_PLUS (Pmode, XEXP (X, 0), \
2568 GEN_INT (offset_base)); \
2569 X = gen_rtx_PLUS (Pmode, sum, GEN_INT (offset - offset_base));\
2570 push_reload (sum, NULL_RTX, &XEXP (X, 0), NULL, \
2571 BASE_REG_CLASS, Pmode, VOIDmode, 0, 0, (OPNUM), \
2576 /* We must re-recognize what we created before. */ \
2577 else if (GET_CODE (X) == PLUS \
2578 && (GET_MODE_SIZE (MODE) == 4 || GET_MODE_SIZE (MODE) == 8) \
2579 && GET_CODE (XEXP (X, 0)) == PLUS \
2580 && GET_CODE (XEXP (XEXP (X, 0), 1)) == CONST_INT \
2581 && BASE_REGISTER_RTX_P (XEXP (XEXP (X, 0), 0)) \
2582 && GET_CODE (XEXP (X, 1)) == CONST_INT \
2583 && ! TARGET_SHMEDIA \
2584 && ! (TARGET_SH2E && MODE == SFmode)) \
2586 /* Because this address is so complex, we know it must have \
2587 been created by LEGITIMIZE_RELOAD_ADDRESS before; thus, \
2588 it is already unshared, and needs no further unsharing. */ \
2589 push_reload (XEXP ((X), 0), NULL_RTX, &XEXP ((X), 0), NULL, \
2590 BASE_REG_CLASS, Pmode, VOIDmode, 0, 0, (OPNUM), (TYPE));\
2595 /* Go to LABEL if ADDR (a legitimate address expression)
2596 has an effect that depends on the machine mode it is used for.
2598 ??? Strictly speaking, we should also include all indexed addressing,
2599 because the index scale factor is the length of the operand.
2600 However, the impact of GO_IF_MODE_DEPENDENT_ADDRESS would be to
2601 high if we did that. So we rely on reload to fix things up. */
2603 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) \
2605 if (GET_CODE(ADDR) == PRE_DEC || GET_CODE(ADDR) == POST_INC) \
2609 /* Specify the machine mode that this machine uses
2610 for the index in the tablejump instruction. */
2611 #define CASE_VECTOR_MODE ((! optimize || TARGET_BIGTABLE) ? SImode : HImode)
2613 #define CASE_VECTOR_SHORTEN_MODE(MIN_OFFSET, MAX_OFFSET, BODY) \
2614 ((MIN_OFFSET) >= 0 && (MAX_OFFSET) <= 127 \
2615 ? (ADDR_DIFF_VEC_FLAGS (BODY).offset_unsigned = 0, QImode) \
2616 : (MIN_OFFSET) >= 0 && (MAX_OFFSET) <= 255 \
2617 ? (ADDR_DIFF_VEC_FLAGS (BODY).offset_unsigned = 1, QImode) \
2618 : (MIN_OFFSET) >= -32768 && (MAX_OFFSET) <= 32767 ? HImode \
2621 /* Define as C expression which evaluates to nonzero if the tablejump
2622 instruction expects the table to contain offsets from the address of the
2624 Do not define this if the table should contain absolute addresses. */
2625 #define CASE_VECTOR_PC_RELATIVE 1
2627 /* Define it here, so that it doesn't get bumped to 64-bits on SHmedia. */
2628 #define FLOAT_TYPE_SIZE 32
2630 /* Since the SH2e has only `float' support, it is desirable to make all
2631 floating point types equivalent to `float'. */
2632 #define DOUBLE_TYPE_SIZE ((TARGET_SH2E && ! TARGET_SH4) ? 32 : 64)
2634 /* 'char' is signed by default. */
2635 #define DEFAULT_SIGNED_CHAR 1
2637 /* The type of size_t unsigned int. */
2638 #define SIZE_TYPE (TARGET_SH5 ? "long unsigned int" : "unsigned int")
2641 #define PTRDIFF_TYPE (TARGET_SH5 ? "long int" : "int")
2643 #define WCHAR_TYPE "short unsigned int"
2644 #define WCHAR_TYPE_SIZE 16
2646 #define SH_ELF_WCHAR_TYPE "long int"
2648 /* Don't cse the address of the function being compiled. */
2649 /*#define NO_RECURSIVE_FUNCTION_CSE 1*/
2651 /* Max number of bytes we can move from memory to memory
2652 in one reasonably fast instruction. */
2653 #define MOVE_MAX (TARGET_SHMEDIA ? 8 : 4)
2655 /* Maximum value possibly taken by MOVE_MAX. Must be defined whenever
2656 MOVE_MAX is not a compile-time constant. */
2657 #define MAX_MOVE_MAX 8
2659 /* Max number of bytes we want move_by_pieces to be able to copy
2661 #define MOVE_MAX_PIECES (TARGET_SH4 || TARGET_SHMEDIA ? 8 : 4)
2663 /* Define if operations between registers always perform the operation
2664 on the full register even if a narrower mode is specified. */
2665 #define WORD_REGISTER_OPERATIONS
2667 /* Define if loading in MODE, an integral mode narrower than BITS_PER_WORD
2668 will either zero-extend or sign-extend. The value of this macro should
2669 be the code that says which one of the two operations is implicitly
2670 done, NIL if none. */
2671 /* For SHmedia, we can truncate to QImode easier using zero extension. */
2672 /* FP registers can load SImode values, but don't implicitly sign-extend
2674 #define LOAD_EXTEND_OP(MODE) \
2675 (((MODE) == QImode && TARGET_SHMEDIA) ? ZERO_EXTEND \
2676 : (MODE) != SImode ? SIGN_EXTEND : NIL)
2678 /* Define if loading short immediate values into registers sign extends. */
2679 #define SHORT_IMMEDIATES_SIGN_EXTEND
2681 /* Nonzero if access to memory by bytes is no faster than for words. */
2682 #define SLOW_BYTE_ACCESS 1
2684 /* Immediate shift counts are truncated by the output routines (or was it
2685 the assembler?). Shift counts in a register are truncated by SH. Note
2686 that the native compiler puts too large (> 32) immediate shift counts
2687 into a register and shifts by the register, letting the SH decide what
2688 to do instead of doing that itself. */
2689 /* ??? The library routines in lib1funcs.asm truncate the shift count.
2690 However, the SH3 has hardware shifts that do not truncate exactly as gcc
2691 expects - the sign bit is significant - so it appears that we need to
2692 leave this zero for correct SH3 code. */
2693 #define SHIFT_COUNT_TRUNCATED (! TARGET_SH3)
2695 /* All integers have the same format so truncation is easy. */
2696 #define TRULY_NOOP_TRUNCATION(OUTPREC,INPREC) 1
2698 /* Define this if addresses of constant functions
2699 shouldn't be put through pseudo regs where they can be cse'd.
2700 Desirable on machines where ordinary constants are expensive
2701 but a CALL with constant address is cheap. */
2702 /*#define NO_FUNCTION_CSE 1*/
2704 /* The machine modes of pointers and functions. */
2705 #define Pmode (TARGET_SHMEDIA64 ? DImode : SImode)
2706 #define FUNCTION_MODE Pmode
2708 /* The multiply insn on the SH1 and the divide insns on the SH1 and SH2
2709 are actually function calls with some special constraints on arguments
2712 These macros tell reorg that the references to arguments and
2713 register clobbers for insns of type sfunc do not appear to happen
2714 until after the millicode call. This allows reorg to put insns
2715 which set the argument registers into the delay slot of the millicode
2716 call -- thus they act more like traditional CALL_INSNs.
2718 get_attr_is_sfunc will try to recognize the given insn, so make sure to
2719 filter out things it will not accept -- SEQUENCE, USE and CLOBBER insns
2722 #define INSN_SETS_ARE_DELAYED(X) \
2723 ((GET_CODE (X) == INSN \
2724 && GET_CODE (PATTERN (X)) != SEQUENCE \
2725 && GET_CODE (PATTERN (X)) != USE \
2726 && GET_CODE (PATTERN (X)) != CLOBBER \
2727 && get_attr_is_sfunc (X)))
2729 #define INSN_REFERENCES_ARE_DELAYED(X) \
2730 ((GET_CODE (X) == INSN \
2731 && GET_CODE (PATTERN (X)) != SEQUENCE \
2732 && GET_CODE (PATTERN (X)) != USE \
2733 && GET_CODE (PATTERN (X)) != CLOBBER \
2734 && get_attr_is_sfunc (X)))
2737 /* Position Independent Code. */
2739 /* We can't directly access anything that contains a symbol,
2740 nor can we indirect via the constant pool. */
2741 #define LEGITIMATE_PIC_OPERAND_P(X) \
2742 ((! nonpic_symbol_mentioned_p (X) \
2743 && (GET_CODE (X) != SYMBOL_REF \
2744 || ! CONSTANT_POOL_ADDRESS_P (X) \
2745 || ! nonpic_symbol_mentioned_p (get_pool_constant (X)))) \
2746 || (TARGET_SHMEDIA && GET_CODE (X) == LABEL_REF))
2748 #define SYMBOLIC_CONST_P(X) \
2749 ((GET_CODE (X) == SYMBOL_REF || GET_CODE (X) == LABEL_REF) \
2750 && nonpic_symbol_mentioned_p (X))
2752 /* Compute extra cost of moving data between one register class
2755 /* If SECONDARY*_RELOAD_CLASS says something about the src/dst pair, regclass
2756 uses this information. Hence, the general register <-> floating point
2757 register information here is not used for SFmode. */
2759 #define REGCLASS_HAS_GENERAL_REG(CLASS) \
2760 ((CLASS) == GENERAL_REGS || (CLASS) == R0_REGS \
2761 || (! TARGET_SHMEDIA && (CLASS) == SIBCALL_REGS))
2763 #define REGCLASS_HAS_FP_REG(CLASS) \
2764 ((CLASS) == FP0_REGS || (CLASS) == FP_REGS \
2765 || (CLASS) == DF_REGS || (CLASS) == DF_HI_REGS)
2767 #define REGISTER_MOVE_COST(MODE, SRCCLASS, DSTCLASS) \
2768 sh_register_move_cost ((MODE), (SRCCLASS), (DSTCLASS))
2770 /* ??? Perhaps make MEMORY_MOVE_COST depend on compiler option? This
2771 would be so that people with slow memory systems could generate
2772 different code that does fewer memory accesses. */
2774 /* A C expression for the cost of a branch instruction. A value of 1
2775 is the default; other values are interpreted relative to that.
2776 The SH1 does not have delay slots, hence we get a pipeline stall
2777 at every branch. The SH4 is superscalar, so the single delay slot
2778 is not sufficient to keep both pipelines filled. */
2779 #define BRANCH_COST (TARGET_SH5 ? 1 : ! TARGET_SH2 || TARGET_HARD_SH4 ? 2 : 1)
2781 /* Assembler output control. */
2783 /* A C string constant describing how to begin a comment in the target
2784 assembler language. The compiler assumes that the comment will end at
2785 the end of the line. */
2786 #define ASM_COMMENT_START "!"
2788 #define ASM_APP_ON ""
2789 #define ASM_APP_OFF ""
2790 #define FILE_ASM_OP "\t.file\n"
2791 #define SET_ASM_OP "\t.set\t"
2793 /* How to change between sections. */
2795 #define TEXT_SECTION_ASM_OP (TARGET_SHMEDIA32 ? "\t.section\t.text..SHmedia32,\"ax\"" : "\t.text")
2796 #define DATA_SECTION_ASM_OP "\t.data"
2798 #if defined CRT_BEGIN || defined CRT_END
2799 /* Arrange for TEXT_SECTION_ASM_OP to be a compile-time constant. */
2800 # undef TEXT_SECTION_ASM_OP
2801 # if __SHMEDIA__ == 1 && __SH5__ == 32
2802 # define TEXT_SECTION_ASM_OP "\t.section\t.text..SHmedia32,\"ax\""
2804 # define TEXT_SECTION_ASM_OP "\t.text"
2809 /* If defined, a C expression whose value is a string containing the
2810 assembler operation to identify the following data as
2811 uninitialized global data. If not defined, and neither
2812 `ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined,
2813 uninitialized global data will be output in the data section if
2814 `-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be
2816 #ifndef BSS_SECTION_ASM_OP
2817 #define BSS_SECTION_ASM_OP "\t.section\t.bss"
2820 /* Like `ASM_OUTPUT_BSS' except takes the required alignment as a
2821 separate, explicit argument. If you define this macro, it is used
2822 in place of `ASM_OUTPUT_BSS', and gives you more flexibility in
2823 handling the required alignment of the variable. The alignment is
2824 specified as the number of bits.
2826 Try to use function `asm_output_aligned_bss' defined in file
2827 `varasm.c' when defining this macro. */
2828 #ifndef ASM_OUTPUT_ALIGNED_BSS
2829 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
2830 asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
2833 /* Define this so that jump tables go in same section as the current function,
2834 which could be text or it could be a user defined section. */
2835 #define JUMP_TABLES_IN_TEXT_SECTION 1
2837 #undef DO_GLOBAL_CTORS_BODY
2838 #define DO_GLOBAL_CTORS_BODY \
2840 typedef (*pfunc)(); \
2841 extern pfunc __ctors[]; \
2842 extern pfunc __ctors_end[]; \
2844 for (p = __ctors_end; p > __ctors; ) \
2850 #undef DO_GLOBAL_DTORS_BODY
2851 #define DO_GLOBAL_DTORS_BODY \
2853 typedef (*pfunc)(); \
2854 extern pfunc __dtors[]; \
2855 extern pfunc __dtors_end[]; \
2857 for (p = __dtors; p < __dtors_end; p++) \
2863 #define ASM_OUTPUT_REG_PUSH(file, v) \
2864 fprintf ((file), "\tmov.l\tr%d,@-r15\n", (v));
2866 #define ASM_OUTPUT_REG_POP(file, v) \
2867 fprintf ((file), "\tmov.l\t@r15+,r%d\n", (v));
2869 /* DBX register number for a given compiler register number. */
2870 /* GDB has FPUL at 23 and FP0 at 25, so we must add one to all FP registers
2872 /* svr4.h undefines this macro, yet we really want to use the same numbers
2873 for coff as for elf, so we go via another macro: SH_DBX_REGISTER_NUMBER. */
2874 /* expand_builtin_init_dwarf_reg_sizes uses this to test if a
2875 register exists, so we should return -1 for invalid register numbers. */
2876 #define DBX_REGISTER_NUMBER(REGNO) SH_DBX_REGISTER_NUMBER (REGNO)
2878 /* SHcompact PR_REG used to use the encoding 241, and SHcompact FP registers
2879 used to use the encodings 245..260, but that doesn't make sense:
2880 PR_REG and PR_MEDIA_REG are actually the same register, and likewise
2881 the FP registers stay the same when switching between compact and media
2882 mode. Hence, we also need to use the same dwarf frame columns.
2883 Likewise, we need to support unwind information for SHmedia registers
2884 even in compact code. */
2885 #define SH_DBX_REGISTER_NUMBER(REGNO) \
2886 (IN_RANGE ((REGNO), \
2887 (unsigned HOST_WIDE_INT) FIRST_GENERAL_REG, \
2888 FIRST_GENERAL_REG + (TARGET_SH5 ? 63U :15U)) \
2889 ? ((unsigned) (REGNO) - FIRST_GENERAL_REG) \
2890 : ((int) (REGNO) >= FIRST_FP_REG \
2892 <= (FIRST_FP_REG + \
2893 ((TARGET_SH5 && TARGET_FPU_ANY) ? 63 : TARGET_SH2E ? 15 : -1)))) \
2894 ? ((unsigned) (REGNO) - FIRST_FP_REG \
2895 + (TARGET_SH5 ? 77 : 25)) \
2896 : XD_REGISTER_P (REGNO) \
2897 ? ((unsigned) (REGNO) - FIRST_XD_REG + (TARGET_SH5 ? 289 : 87)) \
2898 : TARGET_REGISTER_P (REGNO) \
2899 ? ((unsigned) (REGNO) - FIRST_TARGET_REG + 68) \
2900 : (REGNO) == PR_REG \
2901 ? (TARGET_SH5 ? 18 : 17) \
2902 : (REGNO) == PR_MEDIA_REG \
2903 ? (TARGET_SH5 ? 18 : (unsigned) -1) \
2904 : (REGNO) == T_REG \
2905 ? (TARGET_SH5 ? 242 : 18) \
2906 : (REGNO) == GBR_REG \
2907 ? (TARGET_SH5 ? 238 : 19) \
2908 : (REGNO) == MACH_REG \
2909 ? (TARGET_SH5 ? 239 : 20) \
2910 : (REGNO) == MACL_REG \
2911 ? (TARGET_SH5 ? 240 : 21) \
2912 : (REGNO) == FPUL_REG \
2913 ? (TARGET_SH5 ? 244 : 23) \
2916 /* This is how to output a reference to a symbol_ref. On SH5,
2917 references to non-code symbols must be preceded by `datalabel'. */
2918 #define ASM_OUTPUT_SYMBOL_REF(FILE,SYM) \
2921 if (TARGET_SH5 && !SYMBOL_REF_FUNCTION_P (SYM)) \
2922 fputs ("datalabel ", (FILE)); \
2923 assemble_name ((FILE), XSTR ((SYM), 0)); \
2927 /* This is how to output an assembler line
2928 that says to advance the location counter
2929 to a multiple of 2**LOG bytes. */
2931 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
2933 fprintf ((FILE), "\t.align %d\n", (LOG))
2935 /* Globalizing directive for a label. */
2936 #define GLOBAL_ASM_OP "\t.global\t"
2938 /* #define ASM_OUTPUT_CASE_END(STREAM,NUM,TABLE) */
2940 /* Output a relative address table. */
2942 #define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM,BODY,VALUE,REL) \
2943 switch (GET_MODE (BODY)) \
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