1 /* Definitions of target machine for GNU compiler for Hitachi / SuperH SH.
2 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
3 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 GNU CC.
9 GNU CC 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 GNU CC 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 GNU CC; 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 hconfig.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__"); \
49 builtin_define ("__sh3__"); \
50 builtin_define ("__SH3__"); \
51 if (TARGET_HARD_SH4) \
52 builtin_define ("__SH4_NOFPU__"); \
54 case PROCESSOR_SH3E: \
55 builtin_define (TARGET_HARD_SH4 ? "__SH4_SINGLE_ONLY__" : "__SH3E__"); \
58 builtin_define (TARGET_FPU_SINGLE ? "__SH4_SINGLE__" : "__SH4__"); \
62 builtin_define_with_value ("__SH5__", \
63 TARGET_SHMEDIA64 ? "64" : "32", 0); \
64 builtin_define_with_value ("__SHMEDIA__", \
65 TARGET_SHMEDIA ? "1" : "0", 0); \
66 if (! TARGET_FPU_DOUBLE) \
67 builtin_define ("__SH4_NOFPU__"); \
68 if (TARGET_SHMEDIA64) \
69 builtin_define_with_value ("__LONG_MAX__", \
70 "9223372036854775807L", 0); \
74 builtin_define ("__HITACHI__"); \
75 builtin_define (TARGET_LITTLE_ENDIAN \
76 ? "__LITTLE_ENDIAN__" : "__BIG_ENDIAN__"); \
79 builtin_define ("__pic__"); \
80 builtin_define ("__PIC__"); \
82 TARGET_OBJFMT_CPP_BUILTINS (); \
85 /* We can not debug without a frame pointer. */
86 /* #define CAN_DEBUG_WITHOUT_FP */
88 #define CONDITIONAL_REGISTER_USAGE do \
91 for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno ++) \
92 if (! VALID_REGISTER_P (regno)) \
93 fixed_regs[regno] = call_used_regs[regno] = 1; \
94 /* R8 and R9 are call-clobbered on SH5, but not on earlier SH ABIs. */ \
96 call_used_regs[FIRST_GENERAL_REG + 8] \
97 = call_used_regs[FIRST_GENERAL_REG + 9] = 1; \
100 regno_reg_class[FIRST_GENERAL_REG] = GENERAL_REGS; \
101 CLEAR_HARD_REG_SET (reg_class_contents[FP0_REGS]); \
102 regno_reg_class[FIRST_FP_REG] = FP_REGS; \
105 fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
106 /* Hitachi saves and restores mac registers on call. */ \
107 if (TARGET_HITACHI && ! TARGET_NOMACSAVE) \
109 call_used_regs[MACH_REG] = 0; \
110 call_used_regs[MACL_REG] = 0; \
112 if (TARGET_SHMEDIA) \
114 for (regno = FIRST_TARGET_REG; regno <= LAST_TARGET_REG; regno ++)\
115 if (! fixed_regs[regno] && call_used_regs[regno]) \
116 SET_HARD_REG_BIT (reg_class_contents[SIBCALL_REGS], regno); \
119 for (regno = FIRST_GENERAL_REG; regno <= LAST_GENERAL_REG; regno++) \
120 if (! fixed_regs[regno] && call_used_regs[regno]) \
121 SET_HARD_REG_BIT (reg_class_contents[SIBCALL_REGS], regno); \
124 /* ??? Need to write documentation for all SH options and add it to the
127 /* Run-time compilation parameters selecting different hardware subsets. */
129 extern int target_flags;
130 #define ISIZE_BIT (1<<1)
131 #define DALIGN_BIT (1<<6)
132 #define SH1_BIT (1<<8)
133 #define SH2_BIT (1<<9)
134 #define SH3_BIT (1<<10)
135 #define SH3E_BIT (1<<11)
136 #define HARD_SH4_BIT (1<<5)
137 #define FPU_SINGLE_BIT (1<<7)
138 #define SH4_BIT (1<<12)
139 #define FMOVD_BIT (1<<4)
140 #define SH5_BIT (1<<0)
141 #define SPACE_BIT (1<<13)
142 #define BIGTABLE_BIT (1<<14)
143 #define RELAX_BIT (1<<15)
144 #define USERMODE_BIT (1<<16)
145 #define HITACHI_BIT (1<<22)
146 #define NOMACSAVE_BIT (1<<23)
147 #define PREFERGOT_BIT (1<<24)
148 #define PADSTRUCT_BIT (1<<28)
149 #define LITTLE_ENDIAN_BIT (1<<29)
150 #define IEEE_BIT (1<<30)
152 /* Nonzero if we should dump out instruction size info. */
153 #define TARGET_DUMPISIZE (target_flags & ISIZE_BIT)
155 /* Nonzero to align doubles on 64 bit boundaries. */
156 #define TARGET_ALIGN_DOUBLE (target_flags & DALIGN_BIT)
158 /* Nonzero if we should generate code using type 1 insns. */
159 #define TARGET_SH1 (target_flags & SH1_BIT)
161 /* Nonzero if we should generate code using type 2 insns. */
162 #define TARGET_SH2 (target_flags & SH2_BIT)
164 /* Nonzero if we should generate code using type 3 insns. */
165 #define TARGET_SH3 (target_flags & SH3_BIT)
167 /* Nonzero if we should generate code using type 3E insns. */
168 #define TARGET_SH3E ((target_flags & SH3E_BIT) && (target_flags & SH1_BIT))
170 /* Nonzero if the cache line size is 32. */
171 #define TARGET_CACHE32 (target_flags & HARD_SH4_BIT || TARGET_SH5)
173 /* Nonzero if we schedule for a superscalar implementation. */
174 #define TARGET_SUPERSCALAR (target_flags & HARD_SH4_BIT)
176 /* Nonzero if the target has separate instruction and data caches. */
177 #define TARGET_HARVARD (target_flags & HARD_SH4_BIT)
179 /* Nonzero if compiling for SH4 hardware (to be used for insn costs etc.) */
180 #define TARGET_HARD_SH4 (target_flags & HARD_SH4_BIT)
182 /* Nonzero if the default precision of th FPU is single */
183 #define TARGET_FPU_SINGLE (target_flags & FPU_SINGLE_BIT)
185 /* Nonzero if a double-precision FPU is available. */
186 #define TARGET_FPU_DOUBLE (target_flags & SH4_BIT)
188 /* Nonzero if an FPU is available. */
189 #define TARGET_FPU_ANY (TARGET_SH3E || TARGET_FPU_DOUBLE)
191 /* Nonzero if we should generate code using type 4 insns. */
192 #define TARGET_SH4 ((target_flags & SH4_BIT) && (target_flags & SH1_BIT))
194 /* Nonzero if we should generate code for a SH5 CPU (either ISA). */
195 #define TARGET_SH5 (target_flags & SH5_BIT)
197 /* Nonzero if we should generate code using the SHcompact instruction
198 set and 32-bit ABI. */
199 #define TARGET_SHCOMPACT (TARGET_SH5 && TARGET_SH1)
201 /* Nonzero if we should generate code using the SHmedia instruction
203 #define TARGET_SHMEDIA (TARGET_SH5 && ! TARGET_SH1)
205 /* Nonzero if we should generate code using the SHmedia ISA and 32-bit
207 #define TARGET_SHMEDIA32 (TARGET_SH5 && ! TARGET_SH1 \
208 && (target_flags & SH3E_BIT))
210 /* Nonzero if we should generate code using the SHmedia ISA and 64-bit
212 #define TARGET_SHMEDIA64 (TARGET_SH5 && ! TARGET_SH1 \
213 && ! (target_flags & SH3E_BIT))
215 /* Nonzero if we should generate code using SHmedia FPU instructions. */
216 #define TARGET_SHMEDIA_FPU (TARGET_SHMEDIA && TARGET_FPU_DOUBLE)
217 /* Nonzero if we should generate fmovd. */
218 #define TARGET_FMOVD (target_flags & FMOVD_BIT)
220 /* Nonzero if we respect NANs. */
221 #define TARGET_IEEE (target_flags & IEEE_BIT)
223 /* Nonzero if we should generate smaller code rather than faster code. */
224 #define TARGET_SMALLCODE (target_flags & SPACE_BIT)
226 /* Nonzero to use long jump tables. */
227 #define TARGET_BIGTABLE (target_flags & BIGTABLE_BIT)
229 /* Nonzero to generate pseudo-ops needed by the assembler and linker
230 to do function call relaxing. */
231 #define TARGET_RELAX (target_flags & RELAX_BIT)
233 /* Nonzero if using Hitachi's calling convention. */
234 #define TARGET_HITACHI (target_flags & HITACHI_BIT)
236 /* Nonzero if not saving macl/mach when using -mhitachi */
237 #define TARGET_NOMACSAVE (target_flags & NOMACSAVE_BIT)
239 /* Nonzero if padding structures to a multiple of 4 bytes. This is
240 incompatible with Hitachi's compiler, and gives unusual structure layouts
241 which confuse programmers.
242 ??? This option is not useful, but is retained in case there are people
243 who are still relying on it. It may be deleted in the future. */
244 #define TARGET_PADSTRUCT (target_flags & PADSTRUCT_BIT)
246 /* Nonzero if generating code for a little endian SH. */
247 #define TARGET_LITTLE_ENDIAN (target_flags & LITTLE_ENDIAN_BIT)
249 /* Nonzero if we should do everything in userland. */
250 #define TARGET_USERMODE (target_flags & USERMODE_BIT)
252 /* Nonzero if we should prefer @GOT calls when generating PIC. */
253 #define TARGET_PREFERGOT (target_flags & PREFERGOT_BIT)
255 /* Reset all target-selection flags. */
256 #define TARGET_NONE -(SH1_BIT | SH2_BIT | SH3_BIT | SH3E_BIT | SH4_BIT \
257 | HARD_SH4_BIT | FPU_SINGLE_BIT | SH5_BIT)
259 #define TARGET_SWITCHES \
260 { {"1", TARGET_NONE, "" }, \
261 {"1", SH1_BIT, "" }, \
262 {"2", TARGET_NONE, "" }, \
263 {"2", SH2_BIT|SH1_BIT, "" }, \
264 {"3", TARGET_NONE, "" }, \
265 {"3", SH3_BIT|SH2_BIT|SH1_BIT, "" }, \
266 {"3e", TARGET_NONE, "" }, \
267 {"3e", SH3E_BIT|SH3_BIT|SH2_BIT|SH1_BIT|FPU_SINGLE_BIT, "" }, \
268 {"4-single-only", TARGET_NONE, "" }, \
269 {"4-single-only", SH3E_BIT|SH3_BIT|SH2_BIT|SH1_BIT|HARD_SH4_BIT|FPU_SINGLE_BIT, "" }, \
270 {"4-single", TARGET_NONE, "" }, \
271 {"4-single", SH4_BIT|SH3E_BIT|SH3_BIT|SH2_BIT|SH1_BIT|HARD_SH4_BIT|FPU_SINGLE_BIT, "" },\
272 {"4-nofpu", TARGET_NONE, "" }, \
273 {"4-nofpu", SH3_BIT|SH2_BIT|SH1_BIT|HARD_SH4_BIT, "" },\
274 {"4", TARGET_NONE, "" }, \
275 {"4", SH4_BIT|SH3E_BIT|SH3_BIT|SH2_BIT|SH1_BIT|HARD_SH4_BIT, "" }, \
276 {"5-64media", TARGET_NONE, "" }, \
277 {"5-64media", SH5_BIT|SH4_BIT, "Generate 64-bit SHmedia code" }, \
278 {"5-64media-nofpu", TARGET_NONE, "" }, \
279 {"5-64media-nofpu", SH5_BIT, "Generate 64-bit FPU-less SHmedia code" }, \
280 {"5-32media", TARGET_NONE, "" }, \
281 {"5-32media", SH5_BIT|SH4_BIT|SH3E_BIT, "Generate 32-bit SHmedia code" }, \
282 {"5-32media-nofpu", TARGET_NONE, "" }, \
283 {"5-32media-nofpu", SH5_BIT|SH3E_BIT, "Generate 32-bit FPU-less SHmedia code" }, \
284 {"5-compact", TARGET_NONE, "" }, \
285 {"5-compact", SH5_BIT|SH4_BIT|SH3E_BIT|SH3_BIT|SH2_BIT|SH1_BIT|FPU_SINGLE_BIT, "Generate SHcompact code" }, \
286 {"5-compact-nofpu", TARGET_NONE, "" }, \
287 {"5-compact-nofpu", SH5_BIT|SH3_BIT|SH2_BIT|SH1_BIT, "Generate FPU-less SHcompact code" }, \
288 {"b", -LITTLE_ENDIAN_BIT, "" }, \
289 {"bigtable", BIGTABLE_BIT, "" }, \
290 {"dalign", DALIGN_BIT, "" }, \
291 {"fmovd", FMOVD_BIT, "" }, \
292 {"hitachi", HITACHI_BIT, "" }, \
293 {"nomacsave", NOMACSAVE_BIT, "" }, \
294 {"ieee", IEEE_BIT, "" }, \
295 {"isize", ISIZE_BIT, "" }, \
296 {"l", LITTLE_ENDIAN_BIT, "" }, \
297 {"no-ieee", -IEEE_BIT, "" }, \
298 {"padstruct", PADSTRUCT_BIT, "" }, \
299 {"prefergot", PREFERGOT_BIT, "" }, \
300 {"relax", RELAX_BIT, "" }, \
301 {"space", SPACE_BIT, "" }, \
302 {"usermode", USERMODE_BIT, "" }, \
304 {"", TARGET_DEFAULT, "" } \
307 /* This are meant to be redefined in the host dependent files */
308 #define SUBTARGET_SWITCHES
310 /* This defaults us to big-endian. */
311 #ifndef TARGET_ENDIAN_DEFAULT
312 #define TARGET_ENDIAN_DEFAULT 0
315 #define TARGET_DEFAULT (SH1_BIT|TARGET_ENDIAN_DEFAULT)
317 #define CPP_SPEC " %(subtarget_cpp_spec) "
319 #ifndef SUBTARGET_CPP_SPEC
320 #define SUBTARGET_CPP_SPEC ""
323 #ifndef SUBTARGET_EXTRA_SPECS
324 #define SUBTARGET_EXTRA_SPECS
327 #define EXTRA_SPECS \
328 { "subtarget_cpp_spec", SUBTARGET_CPP_SPEC }, \
329 { "link_emul_prefix", LINK_EMUL_PREFIX }, \
330 { "link_default_cpu_emul", LINK_DEFAULT_CPU_EMUL }, \
331 { "subtarget_link_emul_suffix", SUBTARGET_LINK_EMUL_SUFFIX }, \
332 { "subtarget_link_spec", SUBTARGET_LINK_SPEC }, \
333 { "subtarget_asm_endian_spec", SUBTARGET_ASM_ENDIAN_SPEC }, \
334 SUBTARGET_EXTRA_SPECS
336 #define ASM_SPEC "%(subtarget_asm_endian_spec) %{mrelax:-relax}"
338 #ifndef SUBTARGET_ASM_ENDIAN_SPEC
339 #if TARGET_ENDIAN_DEFAULT == LITTLE_ENDIAN_BIT
340 #define SUBTARGET_ASM_ENDIAN_SPEC "%{mb:-big} %{!mb:-little}"
342 #define SUBTARGET_ASM_ENDIAN_SPEC "%{ml:-little} %{!ml:-big}"
346 #define LINK_EMUL_PREFIX "sh%{ml:l}"
347 #define LINK_DEFAULT_CPU_EMUL ""
348 #define SUBTARGET_LINK_EMUL_SUFFIX ""
349 #define SUBTARGET_LINK_SPEC ""
351 /* svr4.h redefines LINK_SPEC inappropriately, so go via SH_LINK_SPEC,
352 so that we can undo the damage without code replication. */
353 #define LINK_SPEC SH_LINK_SPEC
355 #define SH_LINK_SPEC "\
356 -m %(link_emul_prefix)\
357 %{m5-compact*|m5-32media*:32}\
359 %{!m1:%{!m2:%{!m3*:%{!m4*:%{!m5*:%(link_default_cpu_emul)}}}}}\
360 %(subtarget_link_emul_suffix) \
361 %{mrelax:-relax} %(subtarget_link_spec)"
363 #define OPTIMIZATION_OPTIONS(LEVEL,SIZE) \
366 flag_omit_frame_pointer = -1; \
368 target_flags |= SPACE_BIT; \
371 #define ASSEMBLER_DIALECT assembler_dialect
373 extern int assembler_dialect;
375 #define OVERRIDE_OPTIONS \
380 assembler_dialect = 0; \
389 assembler_dialect = 1; \
395 target_flags |= DALIGN_BIT; \
396 if (TARGET_FPU_ANY) \
397 target_flags |= FMOVD_BIT; \
398 if (TARGET_SHMEDIA) \
400 /* There are no delay slots on SHmedia. */ \
401 flag_delayed_branch = 0; \
402 /* Relaxation isn't yet supported for SHmedia */ \
403 target_flags &= ~RELAX_BIT; \
405 if (profile_flag || profile_arc_flag) \
407 warning ("Profiling is not supported on this target."); \
408 profile_flag = profile_arc_flag = 0; \
413 /* Only the sh64-elf assembler fully supports .quad properly. */\
414 targetm.asm_out.aligned_op.di = NULL; \
415 targetm.asm_out.unaligned_op.di = NULL; \
418 for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++) \
419 if (! VALID_REGISTER_P (regno)) \
420 sh_register_names[regno][0] = '\0'; \
422 for (regno = 0; regno < ADDREGNAMES_SIZE; regno++) \
423 if (! VALID_REGISTER_P (ADDREGNAMES_REGNO (regno))) \
424 sh_additional_register_names[regno][0] = '\0'; \
426 if (flag_omit_frame_pointer < 0) \
428 /* The debugging information is sufficient, \
429 but gdb doesn't implement this yet */ \
431 flag_omit_frame_pointer \
432 = (PREFERRED_DEBUGGING_TYPE == DWARF_DEBUG \
433 || PREFERRED_DEBUGGING_TYPE == DWARF2_DEBUG); \
435 flag_omit_frame_pointer = 0; \
438 if (flag_pic && ! TARGET_PREFERGOT) \
439 flag_no_function_cse = 1; \
441 /* Never run scheduling before reload, since that can \
442 break global alloc, and generates slower code anyway due \
443 to the pressure on R0. */ \
444 flag_schedule_insns = 0; \
447 /* Target machine storage layout. */
449 /* Define this if most significant bit is lowest numbered
450 in instructions that operate on numbered bit-fields. */
452 #define BITS_BIG_ENDIAN 0
454 /* Define this if most significant byte of a word is the lowest numbered. */
455 #define BYTES_BIG_ENDIAN (TARGET_LITTLE_ENDIAN == 0)
457 /* Define this if most significant word of a multiword number is the lowest
459 #define WORDS_BIG_ENDIAN (TARGET_LITTLE_ENDIAN == 0)
461 /* Define this to set the endianness to use in libgcc2.c, which can
462 not depend on target_flags. */
463 #if defined(__LITTLE_ENDIAN__)
464 #define LIBGCC2_WORDS_BIG_ENDIAN 0
466 #define LIBGCC2_WORDS_BIG_ENDIAN 1
469 #define MAX_BITS_PER_WORD 64
471 #define MAX_LONG_TYPE_SIZE MAX_BITS_PER_WORD
473 /* Width in bits of an `int'. We want just 32-bits, even if words are
475 #define INT_TYPE_SIZE 32
477 /* Width in bits of a `long'. */
478 #define LONG_TYPE_SIZE (TARGET_SHMEDIA64 ? 64 : 32)
480 /* Width in bits of a `long long'. */
481 #define LONG_LONG_TYPE_SIZE 64
483 /* Width in bits of a `long double'. */
484 #define LONG_DOUBLE_TYPE_SIZE 64
486 /* Width of a word, in units (bytes). */
487 #define UNITS_PER_WORD (TARGET_SHMEDIA ? 8 : 4)
488 #define MIN_UNITS_PER_WORD 4
490 /* Width in bits of a pointer.
491 See also the macro `Pmode' defined below. */
492 #define POINTER_SIZE (TARGET_SHMEDIA64 ? 64 : 32)
494 /* Allocation boundary (in *bits*) for storing arguments in argument list. */
495 #define PARM_BOUNDARY (TARGET_SH5 ? 64 : 32)
497 /* Boundary (in *bits*) on which stack pointer should be aligned. */
498 #define STACK_BOUNDARY BIGGEST_ALIGNMENT
500 /* The log (base 2) of the cache line size, in bytes. Processors prior to
501 SH2 have no actual cache, but they fetch code in chunks of 4 bytes.
502 The SH2/3 have 16 byte cache lines, and the SH4 has a 32 byte cache line */
503 #define CACHE_LOG (TARGET_CACHE32 ? 5 : TARGET_SH2 ? 4 : 2)
505 /* Allocation boundary (in *bits*) for the code of a function.
506 32 bit alignment is faster, because instructions are always fetched as a
507 pair from a longword boundary. */
508 #define FUNCTION_BOUNDARY \
509 (TARGET_SMALLCODE ? 16 << TARGET_SHMEDIA : (1 << CACHE_LOG) * 8)
511 /* On SH5, the lowest bit is used to indicate SHmedia functions, so
512 the vbit must go into the delta field of
513 pointers-to-member-functions. */
514 #define TARGET_PTRMEMFUNC_VBIT_LOCATION \
515 (TARGET_SH5 ? ptrmemfunc_vbit_in_delta : ptrmemfunc_vbit_in_pfn)
517 /* Alignment of field after `int : 0' in a structure. */
518 #define EMPTY_FIELD_BOUNDARY 32
520 /* No data type wants to be aligned rounder than this. */
521 #define BIGGEST_ALIGNMENT (TARGET_ALIGN_DOUBLE ? 64 : 32)
523 /* The best alignment to use in cases where we have a choice. */
524 #define FASTEST_ALIGNMENT (TARGET_SH5 ? 64 : 32)
526 /* Make strings word-aligned so strcpy from constants will be faster. */
527 #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
528 ((TREE_CODE (EXP) == STRING_CST \
529 && (ALIGN) < FASTEST_ALIGNMENT) \
530 ? FASTEST_ALIGNMENT : (ALIGN))
532 /* Make arrays of chars word-aligned for the same reasons. */
533 #define DATA_ALIGNMENT(TYPE, ALIGN) \
534 (TREE_CODE (TYPE) == ARRAY_TYPE \
535 && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \
536 && (ALIGN) < FASTEST_ALIGNMENT ? FASTEST_ALIGNMENT : (ALIGN))
538 /* Number of bits which any structure or union's size must be a
539 multiple of. Each structure or union's size is rounded up to a
541 #define STRUCTURE_SIZE_BOUNDARY (TARGET_PADSTRUCT ? 32 : 8)
543 /* Set this nonzero if move instructions will actually fail to work
544 when given unaligned data. */
545 #define STRICT_ALIGNMENT 1
547 /* If LABEL_AFTER_BARRIER demands an alignment, return its base 2 logarithm. */
548 #define LABEL_ALIGN_AFTER_BARRIER(LABEL_AFTER_BARRIER) \
549 barrier_align (LABEL_AFTER_BARRIER)
551 #define LOOP_ALIGN(A_LABEL) \
552 ((! optimize || TARGET_HARVARD || TARGET_SMALLCODE) \
553 ? 0 : sh_loop_align (A_LABEL))
555 #define LABEL_ALIGN(A_LABEL) \
557 (PREV_INSN (A_LABEL) \
558 && GET_CODE (PREV_INSN (A_LABEL)) == INSN \
559 && GET_CODE (PATTERN (PREV_INSN (A_LABEL))) == UNSPEC_VOLATILE \
560 && XINT (PATTERN (PREV_INSN (A_LABEL)), 1) == UNSPECV_ALIGN) \
561 /* explicit alignment insn in constant tables. */ \
562 ? INTVAL (XVECEXP (PATTERN (PREV_INSN (A_LABEL)), 0, 0)) \
565 /* Jump tables must be 32 bit aligned, no matter the size of the element. */
566 #define ADDR_VEC_ALIGN(ADDR_VEC) 2
568 /* The base two logarithm of the known minimum alignment of an insn length. */
569 #define INSN_LENGTH_ALIGNMENT(A_INSN) \
570 (GET_CODE (A_INSN) == INSN \
571 ? 1 << TARGET_SHMEDIA \
572 : GET_CODE (A_INSN) == JUMP_INSN || GET_CODE (A_INSN) == CALL_INSN \
573 ? 1 << TARGET_SHMEDIA \
576 /* Standard register usage. */
578 /* Register allocation for the Hitachi calling convention:
584 r14 frame pointer/call saved
586 ap arg pointer (doesn't really exist, always eliminated)
587 pr subroutine return address
589 mach multiply/accumulate result, high part
590 macl multiply/accumulate result, low part.
591 fpul fp/int communication register
592 rap return address pointer register
594 fr1..fr3 scratch floating point registers
596 fr12..fr15 call saved floating point registers */
598 #define MAX_REGISTER_NAME_LENGTH 5
599 extern char sh_register_names[][MAX_REGISTER_NAME_LENGTH + 1];
601 #define SH_REGISTER_NAMES_INITIALIZER \
603 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
604 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
605 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \
606 "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", \
607 "r32", "r33", "r34", "r35", "r36", "r37", "r38", "r39", \
608 "r40", "r41", "r42", "r43", "r44", "r45", "r46", "r47", \
609 "r48", "r49", "r50", "r51", "r52", "r53", "r54", "r55", \
610 "r56", "r57", "r58", "r59", "r60", "r61", "r62", "r63", \
611 "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", \
612 "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", \
613 "fr16", "fr17", "fr18", "fr19", "fr20", "fr21", "fr22", "fr23", \
614 "fr24", "fr25", "fr26", "fr27", "fr28", "fr29", "fr30", "fr31", \
615 "fr32", "fr33", "fr34", "fr35", "fr36", "fr37", "fr38", "fr39", \
616 "fr40", "fr41", "fr42", "fr43", "fr44", "fr45", "fr46", "fr47", \
617 "fr48", "fr49", "fr50", "fr51", "fr52", "fr53", "fr54", "fr55", \
618 "fr56", "fr57", "fr58", "fr59", "fr60", "fr61", "fr62", "fr63", \
619 "tr0", "tr1", "tr2", "tr3", "tr4", "tr5", "tr6", "tr7", \
620 "xd0", "xd2", "xd4", "xd6", "xd8", "xd10", "xd12", "xd14", \
621 "gbr", "ap", "pr", "t", "mach", "macl", "fpul", "fpscr", \
625 #define DEBUG_REGISTER_NAMES SH_REGISTER_NAMES_INITIALIZER
627 #define REGNAMES_ARR_INDEX_1(index) \
628 (sh_register_names[index])
629 #define REGNAMES_ARR_INDEX_2(index) \
630 REGNAMES_ARR_INDEX_1 ((index)), REGNAMES_ARR_INDEX_1 ((index)+1)
631 #define REGNAMES_ARR_INDEX_4(index) \
632 REGNAMES_ARR_INDEX_2 ((index)), REGNAMES_ARR_INDEX_2 ((index)+2)
633 #define REGNAMES_ARR_INDEX_8(index) \
634 REGNAMES_ARR_INDEX_4 ((index)), REGNAMES_ARR_INDEX_4 ((index)+4)
635 #define REGNAMES_ARR_INDEX_16(index) \
636 REGNAMES_ARR_INDEX_8 ((index)), REGNAMES_ARR_INDEX_8 ((index)+8)
637 #define REGNAMES_ARR_INDEX_32(index) \
638 REGNAMES_ARR_INDEX_16 ((index)), REGNAMES_ARR_INDEX_16 ((index)+16)
639 #define REGNAMES_ARR_INDEX_64(index) \
640 REGNAMES_ARR_INDEX_32 ((index)), REGNAMES_ARR_INDEX_32 ((index)+32)
642 #define REGISTER_NAMES \
644 REGNAMES_ARR_INDEX_64 (0), \
645 REGNAMES_ARR_INDEX_64 (64), \
646 REGNAMES_ARR_INDEX_8 (128), \
647 REGNAMES_ARR_INDEX_8 (136), \
648 REGNAMES_ARR_INDEX_8 (144), \
649 REGNAMES_ARR_INDEX_1 (152) \
652 #define ADDREGNAMES_SIZE 32
653 #define MAX_ADDITIONAL_REGISTER_NAME_LENGTH 4
654 extern char sh_additional_register_names[ADDREGNAMES_SIZE] \
655 [MAX_ADDITIONAL_REGISTER_NAME_LENGTH + 1];
657 #define SH_ADDITIONAL_REGISTER_NAMES_INITIALIZER \
659 "dr0", "dr2", "dr4", "dr6", "dr8", "dr10", "dr12", "dr14", \
660 "dr16", "dr18", "dr20", "dr22", "dr24", "dr26", "dr28", "dr30", \
661 "dr32", "dr34", "dr36", "dr38", "dr40", "dr42", "dr44", "dr46", \
662 "dr48", "dr50", "dr52", "dr54", "dr56", "dr58", "dr60", "dr62" \
665 #define ADDREGNAMES_REGNO(index) \
666 ((index < 32) ? (FIRST_FP_REG + (index) * 2) \
669 #define ADDREGNAMES_ARR_INDEX_1(index) \
670 { (sh_additional_register_names[index]), ADDREGNAMES_REGNO (index) }
671 #define ADDREGNAMES_ARR_INDEX_2(index) \
672 ADDREGNAMES_ARR_INDEX_1 ((index)), ADDREGNAMES_ARR_INDEX_1 ((index)+1)
673 #define ADDREGNAMES_ARR_INDEX_4(index) \
674 ADDREGNAMES_ARR_INDEX_2 ((index)), ADDREGNAMES_ARR_INDEX_2 ((index)+2)
675 #define ADDREGNAMES_ARR_INDEX_8(index) \
676 ADDREGNAMES_ARR_INDEX_4 ((index)), ADDREGNAMES_ARR_INDEX_4 ((index)+4)
677 #define ADDREGNAMES_ARR_INDEX_16(index) \
678 ADDREGNAMES_ARR_INDEX_8 ((index)), ADDREGNAMES_ARR_INDEX_8 ((index)+8)
679 #define ADDREGNAMES_ARR_INDEX_32(index) \
680 ADDREGNAMES_ARR_INDEX_16 ((index)), ADDREGNAMES_ARR_INDEX_16 ((index)+16)
682 #define ADDITIONAL_REGISTER_NAMES \
684 ADDREGNAMES_ARR_INDEX_32 (0) \
687 /* Number of actual hardware registers.
688 The hardware registers are assigned numbers for the compiler
689 from 0 to just below FIRST_PSEUDO_REGISTER.
690 All registers that the compiler knows about must be given numbers,
691 even those that are not normally considered general registers. */
693 /* There are many other relevant definitions in sh.md's md_constants. */
695 #define FIRST_GENERAL_REG R0_REG
696 #define LAST_GENERAL_REG (FIRST_GENERAL_REG + (TARGET_SHMEDIA ? 63 : 15))
697 #define FIRST_FP_REG DR0_REG
698 #define LAST_FP_REG (FIRST_FP_REG + \
699 (TARGET_SHMEDIA_FPU ? 63 : TARGET_SH3E ? 15 : -1))
700 #define FIRST_XD_REG XD0_REG
701 #define LAST_XD_REG (FIRST_XD_REG + ((TARGET_SH4 && TARGET_FMOVD) ? 7 : -1))
702 #define FIRST_TARGET_REG TR0_REG
703 #define LAST_TARGET_REG (FIRST_TARGET_REG + (TARGET_SHMEDIA ? 7 : -1))
705 #define GENERAL_REGISTER_P(REGNO) \
706 IN_RANGE ((REGNO), FIRST_GENERAL_REG, LAST_GENERAL_REG)
708 #define GENERAL_OR_AP_REGISTER_P(REGNO) \
709 (GENERAL_REGISTER_P (REGNO) || ((REGNO) == AP_REG))
711 #define FP_REGISTER_P(REGNO) \
712 ((REGNO) >= FIRST_FP_REG && (REGNO) <= LAST_FP_REG)
714 #define XD_REGISTER_P(REGNO) \
715 ((REGNO) >= FIRST_XD_REG && (REGNO) <= LAST_XD_REG)
717 #define FP_OR_XD_REGISTER_P(REGNO) \
718 (FP_REGISTER_P (REGNO) || XD_REGISTER_P (REGNO))
720 #define FP_ANY_REGISTER_P(REGNO) \
721 (FP_REGISTER_P (REGNO) || XD_REGISTER_P (REGNO) || (REGNO) == FPUL_REG)
723 #define SPECIAL_REGISTER_P(REGNO) \
724 ((REGNO) == GBR_REG || (REGNO) == T_REG \
725 || (REGNO) == MACH_REG || (REGNO) == MACL_REG)
727 #define TARGET_REGISTER_P(REGNO) \
728 ((REGNO) >= FIRST_TARGET_REG && (REGNO) <= LAST_TARGET_REG)
730 #define SHMEDIA_REGISTER_P(REGNO) \
731 (GENERAL_REGISTER_P (REGNO) || FP_REGISTER_P (REGNO) \
732 || TARGET_REGISTER_P (REGNO))
734 /* This is to be used in CONDITIONAL_REGISTER_USAGE, to mark registers
735 that should be fixed. */
736 #define VALID_REGISTER_P(REGNO) \
737 (SHMEDIA_REGISTER_P (REGNO) || XD_REGISTER_P (REGNO) \
738 || (REGNO) == AP_REG || (REGNO) == RAP_REG \
739 || (TARGET_SH1 && (SPECIAL_REGISTER_P (REGNO) || (REGNO) == PR_REG)) \
740 || (TARGET_SH3E && (REGNO) == FPUL_REG))
742 /* The mode that should be generally used to store a register by
743 itself in the stack, or to load it back. */
744 #define REGISTER_NATURAL_MODE(REGNO) \
745 (FP_REGISTER_P (REGNO) ? SFmode \
746 : XD_REGISTER_P (REGNO) ? DFmode \
747 : TARGET_SHMEDIA && ! HARD_REGNO_CALL_PART_CLOBBERED ((REGNO), DImode) \
751 #define FIRST_PSEUDO_REGISTER 153
753 /* 1 for registers that have pervasive standard uses
754 and are not available for the register allocator.
756 Mach register is fixed 'cause it's only 10 bits wide for SH1.
757 It is 32 bits wide for SH2. */
759 #define FIXED_REGISTERS \
761 /* Regular registers. */ \
762 0, 0, 0, 0, 0, 0, 0, 0, \
763 0, 0, 0, 0, 0, 0, 0, 1, \
764 /* r16 is reserved, r18 is the former pr. */ \
765 1, 0, 0, 0, 0, 0, 0, 0, \
766 /* r24 is reserved for the OS; r25, for the assembler or linker. */ \
767 /* r26 is a global variable data pointer; r27 is for constants. */ \
768 1, 1, 1, 1, 0, 0, 0, 0, \
769 0, 0, 0, 0, 0, 0, 0, 0, \
770 0, 0, 0, 0, 0, 0, 0, 0, \
771 0, 0, 0, 0, 0, 0, 0, 0, \
772 0, 0, 0, 0, 0, 0, 0, 1, \
773 /* FP registers. */ \
774 0, 0, 0, 0, 0, 0, 0, 0, \
775 0, 0, 0, 0, 0, 0, 0, 0, \
776 0, 0, 0, 0, 0, 0, 0, 0, \
777 0, 0, 0, 0, 0, 0, 0, 0, \
778 0, 0, 0, 0, 0, 0, 0, 0, \
779 0, 0, 0, 0, 0, 0, 0, 0, \
780 0, 0, 0, 0, 0, 0, 0, 0, \
781 0, 0, 0, 0, 0, 0, 0, 0, \
782 /* Branch target registers. */ \
783 0, 0, 0, 0, 0, 0, 0, 0, \
784 /* XD registers. */ \
785 0, 0, 0, 0, 0, 0, 0, 0, \
786 /*"gbr", "ap", "pr", "t", "mach", "macl", "fpul", "fpscr", */ \
787 1, 1, 1, 1, 1, 1, 0, 1, \
792 /* 1 for registers not available across function calls.
793 These must include the FIXED_REGISTERS and also any
794 registers that can be used without being saved.
795 The latter must include the registers where values are returned
796 and the register where structure-value addresses are passed.
797 Aside from that, you can include as many other registers as you like. */
799 #define CALL_USED_REGISTERS \
801 /* Regular registers. */ \
802 1, 1, 1, 1, 1, 1, 1, 1, \
803 /* R8 and R9 are call-clobbered on SH5, but not on earlier SH ABIs. \
804 Only the lower 32bits of R10-R14 are guaranteed to be preserved \
805 across SH5 function calls. */ \
806 0, 0, 0, 0, 0, 0, 0, 1, \
807 1, 1, 0, 1, 1, 1, 1, 1, \
808 1, 1, 1, 1, 0, 0, 0, 0, \
809 0, 0, 0, 0, 1, 1, 1, 1, \
810 1, 1, 1, 1, 0, 0, 0, 0, \
811 0, 0, 0, 0, 0, 0, 0, 0, \
812 0, 0, 0, 0, 1, 1, 1, 1, \
813 /* FP registers. */ \
814 1, 1, 1, 1, 1, 1, 1, 1, \
815 1, 1, 1, 1, 0, 0, 0, 0, \
816 1, 1, 1, 1, 1, 1, 1, 1, \
817 1, 1, 1, 1, 1, 1, 1, 1, \
818 1, 1, 1, 1, 0, 0, 0, 0, \
819 0, 0, 0, 0, 0, 0, 0, 0, \
820 0, 0, 0, 0, 0, 0, 0, 0, \
821 0, 0, 0, 0, 0, 0, 0, 0, \
822 /* Branch target registers. */ \
823 1, 1, 1, 1, 1, 0, 0, 0, \
824 /* XD registers. */ \
825 1, 1, 1, 1, 1, 1, 0, 0, \
826 /*"gbr", "ap", "pr", "t", "mach", "macl", "fpul", "fpscr", */ \
827 1, 1, 0, 1, 1, 1, 1, 1, \
832 /* Only the lower 32-bits of R10-R14 are guaranteed to be preserved
833 across SHcompact function calls. We can't tell whether a called
834 function is SHmedia or SHcompact, so we assume it may be when
835 compiling SHmedia code with the 32-bit ABI, since that's the only
836 ABI that can be linked with SHcompact code. */
837 #define HARD_REGNO_CALL_PART_CLOBBERED(REGNO,MODE) \
839 && GET_MODE_SIZE (MODE) > 4 \
840 && (((REGNO) >= FIRST_GENERAL_REG + 10 \
841 && (REGNO) <= FIRST_GENERAL_REG + 14) \
842 || (REGNO) == PR_MEDIA_REG))
844 /* Return number of consecutive hard regs needed starting at reg REGNO
845 to hold something of mode MODE.
846 This is ordinarily the length in words of a value of mode MODE
847 but can be less for certain modes in special long registers.
849 On the SH all but the XD regs are UNITS_PER_WORD bits wide. */
851 #define HARD_REGNO_NREGS(REGNO, MODE) \
852 (XD_REGISTER_P (REGNO) \
853 ? (GET_MODE_SIZE (MODE) / (2 * UNITS_PER_WORD)) \
854 : (TARGET_SHMEDIA && FP_REGISTER_P (REGNO)) \
855 ? ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD/2 - 1) / (UNITS_PER_WORD/2)) \
856 : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)) \
858 /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
859 We can allow any mode in any general register. The special registers
860 only allow SImode. Don't allow any mode in the PR. */
862 /* We cannot hold DCmode values in the XD registers because alter_reg
863 handles subregs of them incorrectly. We could work around this by
864 spacing the XD registers like the DR registers, but this would require
865 additional memory in every compilation to hold larger register vectors.
866 We could hold SFmode / SCmode values in XD registers, but that
867 would require a tertiary reload when reloading from / to memory,
868 and a secondary reload to reload from / to general regs; that
869 seems to be a loosing proposition. */
870 #define HARD_REGNO_MODE_OK(REGNO, MODE) \
871 (SPECIAL_REGISTER_P (REGNO) ? (MODE) == SImode \
872 : (REGNO) == FPUL_REG ? (MODE) == SImode || (MODE) == SFmode \
873 : FP_REGISTER_P (REGNO) && (MODE) == SFmode \
875 : (MODE) == V2SFmode \
876 ? (FP_REGISTER_P (REGNO) && ((REGNO) - FIRST_FP_REG) % 2 == 0) \
877 : (MODE) == V4SFmode \
878 ? (FP_REGISTER_P (REGNO) && ((REGNO) - FIRST_FP_REG) % 4 == 0) \
879 : (MODE) == V16SFmode \
881 ? (FP_REGISTER_P (REGNO) && ((REGNO) - FIRST_FP_REG) % 16 == 0) \
882 : (REGNO) == FIRST_XD_REG) \
883 : FP_REGISTER_P (REGNO) \
884 ? ((MODE) == SFmode \
885 || (TARGET_SHMEDIA && (MODE) == SImode) \
886 || ((TARGET_SH3E || TARGET_SHMEDIA) && (MODE) == SCmode) \
887 || (((TARGET_SH4 && (MODE) == DFmode) || (MODE) == DCmode \
888 || (TARGET_SHMEDIA && ((MODE) == DFmode || (MODE) == DImode \
889 || (MODE) == V2SFmode))) \
890 && (((REGNO) - FIRST_FP_REG) & 1) == 0)) \
891 : XD_REGISTER_P (REGNO) \
893 : TARGET_REGISTER_P (REGNO) \
894 ? ((MODE) == DImode || (MODE) == SImode) \
895 : (REGNO) == PR_REG ? 0 \
896 : (REGNO) == FPSCR_REG ? (MODE) == PSImode \
899 /* Value is 1 if MODE is a supported vector mode. */
900 #define VECTOR_MODE_SUPPORTED_P(MODE) \
902 && ((MODE) == V2SFmode || (MODE) == V4SFmode || (MODE) == V16SFmode))
904 /* Value is 1 if it is a good idea to tie two pseudo registers
905 when one has mode MODE1 and one has mode MODE2.
906 If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
907 for any hard reg, then this must be 0 for correct output.
908 That's the case for xd registers: we don't hold SFmode values in
909 them, so we can't tie an SFmode pseudos with one in another
910 floating-point mode. */
912 #define MODES_TIEABLE_P(MODE1, MODE2) \
913 ((MODE1) == (MODE2) \
914 || (GET_MODE_CLASS (MODE1) == GET_MODE_CLASS (MODE2) \
915 && (TARGET_SHMEDIA ? ((GET_MODE_SIZE (MODE1) <= 4) \
916 && (GET_MODE_SIZE (MODE2) <= 4)) \
917 : ((MODE1) != SFmode && (MODE2) != SFmode))))
919 /* Specify the registers used for certain standard purposes.
920 The values of these macros are register numbers. */
922 /* Define this if the program counter is overloaded on a register. */
923 /* #define PC_REGNUM 15*/
925 /* Register to use for pushing function arguments. */
926 #define STACK_POINTER_REGNUM SP_REG
928 /* Base register for access to local variables of the function. */
929 #define FRAME_POINTER_REGNUM FP_REG
931 /* Fake register that holds the address on the stack of the
932 current function's return address. */
933 #define RETURN_ADDRESS_POINTER_REGNUM RAP_REG
935 /* Register to hold the addressing base for position independent
936 code access to data items. */
937 #define PIC_OFFSET_TABLE_REGNUM (flag_pic ? PIC_REG : INVALID_REGNUM)
939 #define GOT_SYMBOL_NAME "*_GLOBAL_OFFSET_TABLE_"
941 /* Value should be nonzero if functions must have frame pointers.
942 Zero means the frame pointer need not be set up (and parms may be accessed
943 via the stack pointer) in functions that seem suitable. */
945 #define FRAME_POINTER_REQUIRED 0
947 /* Definitions for register eliminations.
949 We have three registers that can be eliminated on the SH. First, the
950 frame pointer register can often be eliminated in favor of the stack
951 pointer register. Secondly, the argument pointer register can always be
952 eliminated; it is replaced with either the stack or frame pointer.
953 Third, there is the return address pointer, which can also be replaced
954 with either the stack or the frame pointer. */
956 /* This is an array of structures. Each structure initializes one pair
957 of eliminable registers. The "from" register number is given first,
958 followed by "to". Eliminations of the same "from" register are listed
959 in order of preference. */
961 /* If you add any registers here that are not actually hard registers,
962 and that have any alternative of elimination that doesn't always
963 apply, you need to amend calc_live_regs to exclude it, because
964 reload spills all eliminable registers where it sees an
965 can_eliminate == 0 entry, thus making them 'live' .
966 If you add any hard registers that can be eliminated in different
967 ways, you have to patch reload to spill them only when all alternatives
968 of elimination fail. */
970 #define ELIMINABLE_REGS \
971 {{ FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
972 { RETURN_ADDRESS_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
973 { RETURN_ADDRESS_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
974 { ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
975 { ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM},}
977 /* Given FROM and TO register numbers, say whether this elimination
979 #define CAN_ELIMINATE(FROM, TO) \
980 (!((FROM) == FRAME_POINTER_REGNUM && FRAME_POINTER_REQUIRED))
982 /* Define the offset between two registers, one to be eliminated, and the other
983 its replacement, at the start of a routine. */
985 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
986 OFFSET = initial_elimination_offset ((FROM), (TO))
988 /* Base register for access to arguments of the function. */
989 #define ARG_POINTER_REGNUM AP_REG
991 /* Register in which the static-chain is passed to a function. */
992 #define STATIC_CHAIN_REGNUM (TARGET_SH5 ? 1 : 3)
994 /* The register in which a struct value address is passed. */
996 #define STRUCT_VALUE_REGNUM 2
998 /* If the structure value address is not passed in a register, define
999 `STRUCT_VALUE' as an expression returning an RTX for the place
1000 where the address is passed. If it returns 0, the address is
1001 passed as an "invisible" first argument. */
1003 /* The Hitachi calling convention doesn't quite fit into this scheme since
1004 the address is passed like an invisible argument, but one that is always
1005 passed in memory. */
1006 #define STRUCT_VALUE \
1007 (TARGET_HITACHI ? 0 : gen_rtx_REG (Pmode, STRUCT_VALUE_REGNUM))
1009 #define RETURN_IN_MEMORY(TYPE) \
1011 ? ((TYPE_MODE (TYPE) == BLKmode \
1012 ? (unsigned HOST_WIDE_INT) int_size_in_bytes (TYPE) \
1013 : GET_MODE_SIZE (TYPE_MODE (TYPE))) > 8) \
1014 : (TYPE_MODE (TYPE) == BLKmode \
1015 || TARGET_HITACHI && TREE_CODE (TYPE) == RECORD_TYPE))
1017 /* Don't default to pcc-struct-return, because we have already specified
1018 exactly how to return structures in the RETURN_IN_MEMORY macro. */
1020 #define DEFAULT_PCC_STRUCT_RETURN 0
1022 #define SHMEDIA_REGS_STACK_ADJUST() \
1023 (TARGET_SHCOMPACT && current_function_has_nonlocal_label \
1024 ? (8 * (/* r28-r35 */ 8 + /* r44-r59 */ 16 + /* tr5-tr7 */ 3) \
1025 + (TARGET_FPU_ANY ? 4 * (/* fr36 - fr63 */ 28) : 0)) \
1029 /* Define the classes of registers for register constraints in the
1030 machine description. Also define ranges of constants.
1032 One of the classes must always be named ALL_REGS and include all hard regs.
1033 If there is more than one class, another class must be named NO_REGS
1034 and contain no registers.
1036 The name GENERAL_REGS must be the name of a class (or an alias for
1037 another name such as ALL_REGS). This is the class of registers
1038 that is allowed by "g" or "r" in a register constraint.
1039 Also, registers outside this class are allocated only when
1040 instructions express preferences for them.
1042 The classes must be numbered in nondecreasing order; that is,
1043 a larger-numbered class must never be contained completely
1044 in a smaller-numbered class.
1046 For any two classes, it is very desirable that there be another
1047 class that represents their union. */
1049 /* The SH has two sorts of general registers, R0 and the rest. R0 can
1050 be used as the destination of some of the arithmetic ops. There are
1051 also some special purpose registers; the T bit register, the
1052 Procedure Return Register and the Multiply Accumulate Registers. */
1053 /* Place GENERAL_REGS after FPUL_REGS so that it will be preferred by
1054 reg_class_subunion. We don't want to have an actual union class
1055 of these, because it would only be used when both classes are calculated
1056 to give the same cost, but there is only one FPUL register.
1057 Besides, regclass fails to notice the different REGISTER_MOVE_COSTS
1058 applying to the actual instruction alternative considered. E.g., the
1059 y/r alternative of movsi_ie is considered to have no more cost that
1060 the r/r alternative, which is patently untrue. */
1082 #define N_REG_CLASSES (int) LIM_REG_CLASSES
1084 /* Give names of register classes as strings for dump file. */
1085 #define REG_CLASS_NAMES \
1099 "GENERAL_FP_REGS", \
1104 /* Define which registers fit in which classes.
1105 This is an initializer for a vector of HARD_REG_SET
1106 of length N_REG_CLASSES. */
1108 #define REG_CLASS_CONTENTS \
1111 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, \
1113 { 0x00000001, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, \
1115 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00040000 }, \
1117 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00080000 }, \
1119 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00300000 }, \
1121 { 0x00000000, 0x00000000, 0x00000000, 0x00000001, 0x00400000 }, \
1122 /* SIBCALL_REGS: Initialized in CONDITIONAL_REGISTER_USAGE. */ \
1123 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, \
1124 /* GENERAL_REGS: */ \
1125 { 0xffffffff, 0xffffffff, 0x00000000, 0x00000000, 0x01020000 }, \
1127 { 0x00000000, 0x00000000, 0x00000001, 0x00000000, 0x00000000 }, \
1129 { 0x00000000, 0x00000000, 0xffffffff, 0xffffffff, 0x00000000 }, \
1131 { 0x00000000, 0x00000000, 0xffffffff, 0xffffffff, 0x0000ff00 }, \
1133 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00800000 }, \
1134 /* GENERAL_FP_REGS: */ \
1135 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0x0102ff00 }, \
1136 /* TARGET_REGS: */ \
1137 { 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x000000ff }, \
1139 { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0x01ffffff }, \
1142 /* The same information, inverted:
1143 Return the class number of the smallest class containing
1144 reg number REGNO. This could be a conditional expression
1145 or could index an array. */
1147 extern int regno_reg_class[FIRST_PSEUDO_REGISTER];
1148 #define REGNO_REG_CLASS(REGNO) regno_reg_class[(REGNO)]
1150 /* When defined, the compiler allows registers explicitly used in the
1151 rtl to be used as spill registers but prevents the compiler from
1152 extending the lifetime of these registers. */
1154 #define SMALL_REGISTER_CLASSES (! TARGET_SHMEDIA)
1156 /* The order in which register should be allocated. */
1157 /* Sometimes FP0_REGS becomes the preferred class of a floating point pseudo,
1158 and GENERAL_FP_REGS the alternate class. Since FP0 is likely to be
1159 spilled or used otherwise, we better have the FP_REGS allocated first. */
1160 #define REG_ALLOC_ORDER \
1161 { 65, 66, 67, 68, 69, 70, 71, 64, \
1162 72, 73, 74, 75, 76, 77, 78, 79, \
1163 136,137,138,139,140,141,142,143, \
1164 80, 81, 82, 83, 84, 85, 86, 87, \
1165 88, 89, 90, 91, 92, 93, 94, 95, \
1166 96, 97, 98, 99,100,101,102,103, \
1167 104,105,106,107,108,109,110,111, \
1168 112,113,114,115,116,117,118,119, \
1169 120,121,122,123,124,125,126,127, \
1170 151, 1, 2, 3, 7, 6, 5, 4, \
1171 0, 8, 9, 10, 11, 12, 13, 14, \
1172 16, 17, 18, 19, 20, 21, 22, 23, \
1173 24, 25, 26, 27, 28, 29, 30, 31, \
1174 32, 33, 34, 35, 36, 37, 38, 39, \
1175 40, 41, 42, 43, 44, 45, 46, 47, \
1176 48, 49, 50, 51, 52, 53, 54, 55, \
1177 56, 57, 58, 59, 60, 61, 62, 63, \
1178 150, 15,145,146,147,144,148,149, \
1179 128,129,130,131,132,133,134,135, \
1182 /* The class value for index registers, and the one for base regs. */
1183 #define INDEX_REG_CLASS (TARGET_SHMEDIA ? GENERAL_REGS : R0_REGS)
1184 #define BASE_REG_CLASS GENERAL_REGS
1186 /* Get reg_class from a letter such as appears in the machine
1188 extern const enum reg_class reg_class_from_letter[];
1190 #define REG_CLASS_FROM_LETTER(C) \
1191 ( ISLOWER (C) ? reg_class_from_letter[(C)-'a'] : NO_REGS )
1193 /* The letters I, J, K, L and M in a register constraint string
1194 can be used to stand for particular ranges of immediate operands.
1195 This macro defines what the ranges are.
1196 C is the letter, and VALUE is a constant value.
1197 Return 1 if VALUE is in the range specified by C.
1198 I: arithmetic operand -127..128, as used in add, sub, etc
1199 J: arithmetic operand -32768..32767, as used in SHmedia movi and shori
1200 K: shift operand 1,2,8 or 16
1201 L: logical operand 0..255, as used in and, or, etc.
1204 O: arithmetic operand -32..31, as used in SHmedia beqi, bnei and xori
1205 P: arithmetic operand -512..511, as used in SHmedia andi, ori
1208 #define CONST_OK_FOR_I(VALUE) (((HOST_WIDE_INT)(VALUE))>= -128 \
1209 && ((HOST_WIDE_INT)(VALUE)) <= 127)
1210 #define CONST_OK_FOR_J(VALUE) (((HOST_WIDE_INT)(VALUE)) >= -32768 \
1211 && ((HOST_WIDE_INT)(VALUE)) <= 32767)
1212 #define CONST_OK_FOR_K(VALUE) ((VALUE)==1||(VALUE)==2||(VALUE)==8||(VALUE)==16)
1213 #define CONST_OK_FOR_L(VALUE) (((HOST_WIDE_INT)(VALUE))>= 0 \
1214 && ((HOST_WIDE_INT)(VALUE)) <= 255)
1215 #define CONST_OK_FOR_M(VALUE) ((VALUE)==1)
1216 #define CONST_OK_FOR_N(VALUE) ((VALUE)==0)
1217 #define CONST_OK_FOR_O(VALUE) (((HOST_WIDE_INT)(VALUE)) >= -32 \
1218 && ((HOST_WIDE_INT)(VALUE)) <= 31)
1219 #define CONST_OK_FOR_P(VALUE) (((HOST_WIDE_INT)(VALUE)) >= -512 \
1220 && ((HOST_WIDE_INT)(VALUE)) <= 511)
1221 #define CONST_OK_FOR_LETTER_P(VALUE, C) \
1222 ((C) == 'I' ? CONST_OK_FOR_I (VALUE) \
1223 : (C) == 'J' ? CONST_OK_FOR_J (VALUE) \
1224 : (C) == 'K' ? CONST_OK_FOR_K (VALUE) \
1225 : (C) == 'L' ? CONST_OK_FOR_L (VALUE) \
1226 : (C) == 'M' ? CONST_OK_FOR_M (VALUE) \
1227 : (C) == 'N' ? CONST_OK_FOR_N (VALUE) \
1228 : (C) == 'O' ? CONST_OK_FOR_O (VALUE) \
1229 : (C) == 'P' ? CONST_OK_FOR_P (VALUE) \
1232 /* Similar, but for floating constants, and defining letters G and H.
1233 Here VALUE is the CONST_DOUBLE rtx itself. */
1235 #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
1236 ((C) == 'G' ? (fp_zero_operand (VALUE) && fldi_ok ()) \
1237 : (C) == 'H' ? (fp_one_operand (VALUE) && fldi_ok ()) \
1240 /* Given an rtx X being reloaded into a reg required to be
1241 in class CLASS, return the class of reg to actually use.
1242 In general this is just CLASS; but on some machines
1243 in some cases it is preferable to use a more restrictive class. */
1245 #define PREFERRED_RELOAD_CLASS(X, CLASS) \
1246 ((CLASS) == NO_REGS && TARGET_SHMEDIA \
1247 && (GET_CODE (X) == CONST_DOUBLE \
1248 || GET_CODE (X) == SYMBOL_REF) \
1252 #define SECONDARY_OUTPUT_RELOAD_CLASS(CLASS,MODE,X) \
1253 ((((((CLASS) == FP_REGS || (CLASS) == FP0_REGS \
1254 || (CLASS) == DF_REGS) \
1255 && (GET_CODE (X) == REG && GENERAL_OR_AP_REGISTER_P (REGNO (X)))) \
1256 || (((CLASS) == GENERAL_REGS || (CLASS) == R0_REGS) \
1257 && GET_CODE (X) == REG \
1258 && FP_REGISTER_P (REGNO (X)))) \
1259 && ! TARGET_SHMEDIA \
1260 && MODE == SFmode) \
1262 : ((CLASS) == FPUL_REGS \
1263 && (GET_CODE (X) == MEM \
1264 || (GET_CODE (X) == REG \
1265 && (REGNO (X) >= FIRST_PSEUDO_REGISTER \
1266 || REGNO (X) == T_REG \
1267 || system_reg_operand (X, VOIDmode))))) \
1269 : (((CLASS) == FP_REGS || (CLASS) == DF_REGS) && TARGET_SHMEDIA \
1270 && immediate_operand ((X), (MODE))) \
1272 : ((CLASS) == TARGET_REGS \
1273 || (TARGET_SHMEDIA && (CLASS) == SIBCALL_REGS)) \
1274 ? ((target_operand ((X), (MODE)) \
1275 && ! target_reg_operand ((X), (MODE))) \
1276 ? NO_REGS : GENERAL_REGS) \
1277 : (((CLASS) == MAC_REGS || (CLASS) == PR_REGS) \
1278 && GET_CODE (X) == REG && ! GENERAL_REGISTER_P (REGNO (X)) \
1279 && (CLASS) != REGNO_REG_CLASS (REGNO (X))) \
1280 ? GENERAL_REGS : NO_REGS)
1282 #define SECONDARY_INPUT_RELOAD_CLASS(CLASS,MODE,X) \
1283 ((((CLASS) == FP_REGS || (CLASS) == FP0_REGS || (CLASS) == DF_REGS) \
1284 && ! TARGET_SHMEDIA \
1285 && immediate_operand ((X), (MODE)) \
1286 && ! ((fp_zero_operand (X) || fp_one_operand (X)) \
1287 && (MODE) == SFmode && fldi_ok ())) \
1289 : (CLASS == FPUL_REGS \
1290 && ((GET_CODE (X) == REG \
1291 && (REGNO (X) == MACL_REG || REGNO (X) == MACH_REG \
1292 || REGNO (X) == T_REG)))) \
1294 : CLASS == FPUL_REGS && immediate_operand ((X), (MODE)) \
1295 ? (GET_CODE (X) == CONST_INT && CONST_OK_FOR_I (INTVAL (X)) \
1298 : (CLASS == FPSCR_REGS \
1299 && ((GET_CODE (X) == REG && REGNO (X) >= FIRST_PSEUDO_REGISTER) \
1300 || (GET_CODE (X) == MEM && GET_CODE (XEXP ((X), 0)) == PLUS)))\
1302 : SECONDARY_OUTPUT_RELOAD_CLASS((CLASS),(MODE),(X)))
1304 /* Return the maximum number of consecutive registers
1305 needed to represent mode MODE in a register of class CLASS.
1307 On SH this is the size of MODE in words. */
1308 #define CLASS_MAX_NREGS(CLASS, MODE) \
1309 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
1311 /* If defined, gives a class of registers that cannot be used as the
1312 operand of a SUBREG that changes the mode of the object illegally. */
1314 #define CLASS_CANNOT_CHANGE_MODE DF_REGS
1316 /* Defines illegal mode changes for CLASS_CANNOT_CHANGE_MODE. */
1318 #define CLASS_CANNOT_CHANGE_MODE_P(FROM,TO) \
1319 (GET_MODE_SIZE (FROM) != GET_MODE_SIZE (TO))
1321 /* Stack layout; function entry, exit and calling. */
1323 /* Define the number of registers that can hold parameters.
1324 These macros are used only in other macro definitions below. */
1326 #define NPARM_REGS(MODE) \
1327 (TARGET_FPU_ANY && (MODE) == SFmode \
1328 ? (TARGET_SH5 ? 12 : 8) \
1329 : TARGET_SH4 && (GET_MODE_CLASS (MODE) == MODE_FLOAT \
1330 || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) \
1331 ? (TARGET_SH5 ? 12 : 8) \
1332 : (TARGET_SH5 ? 8 : 4))
1334 #define FIRST_PARM_REG (FIRST_GENERAL_REG + (TARGET_SH5 ? 2 : 4))
1335 #define FIRST_RET_REG (FIRST_GENERAL_REG + (TARGET_SH5 ? 2 : 0))
1337 #define FIRST_FP_PARM_REG (FIRST_FP_REG + (TARGET_SH5 ? 0 : 4))
1338 #define FIRST_FP_RET_REG FIRST_FP_REG
1340 /* Define this if pushing a word on the stack
1341 makes the stack pointer a smaller address. */
1342 #define STACK_GROWS_DOWNWARD
1344 /* Define this macro if the addresses of local variable slots are at
1345 negative offsets from the frame pointer.
1347 The SH only has positive indexes, so grow the frame up. */
1348 /* #define FRAME_GROWS_DOWNWARD */
1350 /* Offset from the frame pointer to the first local variable slot to
1352 #define STARTING_FRAME_OFFSET 0
1354 /* If we generate an insn to push BYTES bytes,
1355 this says how many the stack pointer really advances by. */
1356 /* Don't define PUSH_ROUNDING, since the hardware doesn't do this.
1357 When PUSH_ROUNDING is not defined, PARM_BOUNDARY will cause gcc to
1358 do correct alignment. */
1360 #define PUSH_ROUNDING(NPUSHED) (((NPUSHED) + 3) & ~3)
1363 /* Offset of first parameter from the argument pointer register value. */
1364 #define FIRST_PARM_OFFSET(FNDECL) 0
1366 /* Value is the number of byte of arguments automatically
1367 popped when returning from a subroutine call.
1368 FUNDECL is the declaration node of the function (as a tree),
1369 FUNTYPE is the data type of the function (as a tree),
1370 or for a library call it is an identifier node for the subroutine name.
1371 SIZE is the number of bytes of arguments passed on the stack.
1373 On the SH, the caller does not pop any of its arguments that were passed
1375 #define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE) 0
1377 /* Value is the number of bytes of arguments automatically popped when
1378 calling a subroutine.
1379 CUM is the accumulated argument list.
1381 On SHcompact, the call trampoline pops arguments off the stack. */
1382 #define CALL_POPS_ARGS(CUM) (TARGET_SHCOMPACT ? (CUM).stack_regs * 8 : 0)
1384 /* Nonzero if we do not know how to pass TYPE solely in registers.
1385 Values that come in registers with inconvenient padding are stored
1386 to memory at the function start. */
1388 #define MUST_PASS_IN_STACK(MODE,TYPE) \
1390 && (TREE_CODE (TYPE_SIZE (TYPE)) != INTEGER_CST \
1391 || TREE_ADDRESSABLE (TYPE)))
1392 /* Some subroutine macros specific to this machine. */
1394 #define BASE_RETURN_VALUE_REG(MODE) \
1395 ((TARGET_FPU_ANY && ((MODE) == SFmode)) \
1396 ? FIRST_FP_RET_REG \
1397 : TARGET_FPU_ANY && (MODE) == SCmode \
1398 ? FIRST_FP_RET_REG \
1399 : (TARGET_FPU_DOUBLE \
1400 && ((MODE) == DFmode || (MODE) == SFmode \
1401 || (MODE) == DCmode || (MODE) == SCmode )) \
1402 ? FIRST_FP_RET_REG \
1405 #define BASE_ARG_REG(MODE) \
1406 ((TARGET_SH3E && ((MODE) == SFmode)) \
1407 ? FIRST_FP_PARM_REG \
1408 : TARGET_SH4 && (GET_MODE_CLASS (MODE) == MODE_FLOAT \
1409 || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT)\
1410 ? FIRST_FP_PARM_REG \
1413 /* Define how to find the value returned by a function.
1414 VALTYPE is the data type of the value (as a tree).
1415 If the precise function being called is known, FUNC is its FUNCTION_DECL;
1416 otherwise, FUNC is 0.
1417 For the SH, this is like LIBCALL_VALUE, except that we must change the
1418 mode like PROMOTE_MODE does.
1419 ??? PROMOTE_MODE is ignored for non-scalar types. The set of types
1420 tested here has to be kept in sync with the one in explow.c:promote_mode. */
1422 #define FUNCTION_VALUE(VALTYPE, FUNC) \
1424 ((GET_MODE_CLASS (TYPE_MODE (VALTYPE)) == MODE_INT \
1425 && GET_MODE_SIZE (TYPE_MODE (VALTYPE)) < UNITS_PER_WORD \
1426 && (TREE_CODE (VALTYPE) == INTEGER_TYPE \
1427 || TREE_CODE (VALTYPE) == ENUMERAL_TYPE \
1428 || TREE_CODE (VALTYPE) == BOOLEAN_TYPE \
1429 || TREE_CODE (VALTYPE) == CHAR_TYPE \
1430 || TREE_CODE (VALTYPE) == REAL_TYPE \
1431 || TREE_CODE (VALTYPE) == OFFSET_TYPE)) \
1432 ? (TARGET_SHMEDIA ? DImode : SImode) : TYPE_MODE (VALTYPE)), \
1433 BASE_RETURN_VALUE_REG (TYPE_MODE (VALTYPE)))
1435 /* Define how to find the value returned by a library function
1436 assuming the value has mode MODE. */
1437 #define LIBCALL_VALUE(MODE) \
1438 gen_rtx_REG ((MODE), BASE_RETURN_VALUE_REG (MODE));
1440 /* 1 if N is a possible register number for a function value. */
1441 #define FUNCTION_VALUE_REGNO_P(REGNO) \
1442 ((REGNO) == FIRST_RET_REG || (TARGET_SH3E && (REGNO) == FIRST_FP_RET_REG) \
1443 || (TARGET_SHMEDIA_FPU && (REGNO) == FIRST_FP_RET_REG))
1445 /* 1 if N is a possible register number for function argument passing. */
1446 #define FUNCTION_ARG_REGNO_P(REGNO) \
1447 (((REGNO) >= FIRST_PARM_REG && (REGNO) < (FIRST_PARM_REG \
1448 + NPARM_REGS (SImode))) \
1449 || (TARGET_FPU_ANY \
1450 && (REGNO) >= FIRST_FP_PARM_REG && (REGNO) < (FIRST_FP_PARM_REG \
1451 + NPARM_REGS (SFmode))))
1453 /* Define a data type for recording info about an argument list
1454 during the scan of that argument list. This data type should
1455 hold all necessary information about the function itself
1456 and about the args processed so far, enough to enable macros
1457 such as FUNCTION_ARG to determine where the next arg should go.
1459 On SH, this is a single integer, which is a number of words
1460 of arguments scanned so far (including the invisible argument,
1461 if any, which holds the structure-value-address).
1462 Thus NARGREGS or more means all following args should go on the stack. */
1464 enum sh_arg_class { SH_ARG_INT = 0, SH_ARG_FLOAT = 1 };
1468 /* Non-zero if a prototype is available for the function. */
1470 /* The number of an odd floating-point register, that should be used
1471 for the next argument of type float. */
1472 int free_single_fp_reg;
1473 /* Whether we're processing an outgoing function call. */
1475 /* The number of general-purpose registers that should have been
1476 used to pass partial arguments, that are passed totally on the
1477 stack. On SHcompact, a call trampoline will pop them off the
1478 stack before calling the actual function, and, if the called
1479 function is implemented in SHcompact mode, the incoming arguments
1480 decoder will push such arguments back onto the stack. For
1481 incoming arguments, STACK_REGS also takes into account other
1482 arguments passed by reference, that the decoder will also push
1485 /* The number of general-purpose registers that should have been
1486 used to pass arguments, if the arguments didn't have to be passed
1489 /* Set by SHCOMPACT_BYREF if the current argument is to be passed by
1493 /* call_cookie is a bitmask used by call expanders, as well as
1494 function prologue and epilogues, to allow SHcompact to comply
1495 with the SH5 32-bit ABI, that requires 64-bit registers to be
1496 used even though only the lower 32-bit half is visible in
1497 SHcompact mode. The strategy is to call SHmedia trampolines.
1499 The alternatives for each of the argument-passing registers are
1500 (a) leave it unchanged; (b) pop it off the stack; (c) load its
1501 contents from the address in it; (d) add 8 to it, storing the
1502 result in the next register, then (c); (e) copy it from some
1503 floating-point register,
1505 Regarding copies from floating-point registers, r2 may only be
1506 copied from dr0. r3 may be copied from dr0 or dr2. r4 maybe
1507 copied from dr0, dr2 or dr4. r5 maybe copied from dr0, dr2,
1508 dr4 or dr6. r6 may be copied from dr0, dr2, dr4, dr6 or dr8.
1509 r7 through to r9 may be copied from dr0, dr2, dr4, dr8, dr8 or
1512 The bit mask is structured as follows:
1514 - 1 bit to tell whether to set up a return trampoline.
1516 - 3 bits to count the number consecutive registers to pop off the
1519 - 4 bits for each of r9, r8, r7 and r6.
1521 - 3 bits for each of r5, r4, r3 and r2.
1523 - 3 bits set to 0 (the most significant ones)
1526 1098 7654 3210 9876 5432 1098 7654 3210
1527 FLPF LPFL PFLP FFLP FFLP FFLP FFLP SSST
1528 2223 3344 4555 6666 7777 8888 9999 SSS-
1530 - If F is set, the register must be copied from an FP register,
1531 whose number is encoded in the remaining bits.
1533 - Else, if L is set, the register must be loaded from the address
1534 contained in it. If the P bit is *not* set, the address of the
1535 following dword should be computed first, and stored in the
1538 - Else, if P is set, the register alone should be popped off the
1541 - After all this processing, the number of registers represented
1542 in SSS will be popped off the stack. This is an optimization
1543 for pushing/popping consecutive registers, typically used for
1544 varargs and large arguments partially passed in registers.
1546 - If T is set, a return trampoline will be set up for 64-bit
1547 return values to be split into 2 32-bit registers. */
1548 #define CALL_COOKIE_RET_TRAMP_SHIFT 0
1549 #define CALL_COOKIE_RET_TRAMP(VAL) ((VAL) << CALL_COOKIE_RET_TRAMP_SHIFT)
1550 #define CALL_COOKIE_STACKSEQ_SHIFT 1
1551 #define CALL_COOKIE_STACKSEQ(VAL) ((VAL) << CALL_COOKIE_STACKSEQ_SHIFT)
1552 #define CALL_COOKIE_STACKSEQ_GET(COOKIE) \
1553 (((COOKIE) >> CALL_COOKIE_STACKSEQ_SHIFT) & 7)
1554 #define CALL_COOKIE_INT_REG_SHIFT(REG) \
1555 (4 * (7 - (REG)) + (((REG) <= 2) ? ((REG) - 2) : 1) + 3)
1556 #define CALL_COOKIE_INT_REG(REG, VAL) \
1557 ((VAL) << CALL_COOKIE_INT_REG_SHIFT (REG))
1558 #define CALL_COOKIE_INT_REG_GET(COOKIE, REG) \
1559 (((COOKIE) >> CALL_COOKIE_INT_REG_SHIFT (REG)) & ((REG) < 4 ? 7 : 15))
1563 #define CUMULATIVE_ARGS struct sh_args
1565 #define GET_SH_ARG_CLASS(MODE) \
1566 ((TARGET_FPU_ANY && (MODE) == SFmode) \
1568 /* There's no mention of complex float types in the SH5 ABI, so we
1569 should presumably handle them as aggregate types. */ \
1570 : TARGET_SH5 && GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT \
1572 : TARGET_FPU_DOUBLE && (GET_MODE_CLASS (MODE) == MODE_FLOAT \
1573 || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) \
1574 ? SH_ARG_FLOAT : SH_ARG_INT)
1576 #define ROUND_ADVANCE(SIZE) \
1577 (((SIZE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
1579 /* Round a register number up to a proper boundary for an arg of mode
1582 The SH doesn't care about double alignment, so we only
1583 round doubles to even regs when asked to explicitly. */
1585 #define ROUND_REG(CUM, MODE) \
1586 (((TARGET_ALIGN_DOUBLE \
1587 || (TARGET_SH4 && ((MODE) == DFmode || (MODE) == DCmode) \
1588 && (CUM).arg_count[(int) SH_ARG_FLOAT] < NPARM_REGS (MODE)))\
1589 && GET_MODE_UNIT_SIZE ((MODE)) > UNITS_PER_WORD) \
1590 ? ((CUM).arg_count[(int) GET_SH_ARG_CLASS (MODE)] \
1591 + ((CUM).arg_count[(int) GET_SH_ARG_CLASS (MODE)] & 1)) \
1592 : (CUM).arg_count[(int) GET_SH_ARG_CLASS (MODE)])
1594 /* Initialize a variable CUM of type CUMULATIVE_ARGS
1595 for a call to a function whose data type is FNTYPE.
1596 For a library call, FNTYPE is 0.
1598 On SH, the offset always starts at 0: the first parm reg is always
1599 the same reg for a given argument class.
1601 For TARGET_HITACHI, the structure value pointer is passed in memory. */
1603 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT) \
1605 (CUM).arg_count[(int) SH_ARG_INT] = 0; \
1606 (CUM).arg_count[(int) SH_ARG_FLOAT] = 0; \
1608 = (TARGET_HITACHI && FNTYPE \
1609 && aggregate_value_p (TREE_TYPE (FNTYPE))); \
1610 (CUM).prototype_p = (FNTYPE) && TYPE_ARG_TYPES (FNTYPE); \
1611 (CUM).arg_count[(int) SH_ARG_INT] \
1612 = (TARGET_SH5 && (FNTYPE) \
1613 && aggregate_value_p (TREE_TYPE (FNTYPE))); \
1614 (CUM).free_single_fp_reg = 0; \
1615 (CUM).outgoing = 1; \
1616 (CUM).stack_regs = 0; \
1617 (CUM).byref_regs = 0; \
1620 = (CALL_COOKIE_RET_TRAMP \
1621 (TARGET_SHCOMPACT && (FNTYPE) \
1622 && (CUM).arg_count[(int) SH_ARG_INT] == 0 \
1623 && (TYPE_MODE (TREE_TYPE (FNTYPE)) == BLKmode \
1624 ? int_size_in_bytes (TREE_TYPE (FNTYPE)) \
1625 : GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (FNTYPE)))) > 4 \
1626 && (BASE_RETURN_VALUE_REG (TYPE_MODE (TREE_TYPE \
1628 == FIRST_RET_REG))); \
1631 #define INIT_CUMULATIVE_LIBCALL_ARGS(CUM, MODE, LIBNAME) \
1633 INIT_CUMULATIVE_ARGS ((CUM), NULL_TREE, (LIBNAME), 0); \
1635 = (CALL_COOKIE_RET_TRAMP \
1636 (TARGET_SHCOMPACT && GET_MODE_SIZE (MODE) > 4 \
1637 && BASE_RETURN_VALUE_REG (MODE) == FIRST_RET_REG)); \
1640 #define INIT_CUMULATIVE_INCOMING_ARGS(CUM, FNTYPE, LIBNAME) \
1642 INIT_CUMULATIVE_ARGS ((CUM), (FNTYPE), (LIBNAME), 0); \
1643 (CUM).outgoing = 0; \
1646 /* FIXME: This is overly conservative. A SHcompact function that
1647 receives arguments ``by reference'' will have them stored in its
1648 own stack frame, so it must not pass pointers or references to
1649 these arguments to other functions by means of sibling calls. */
1650 #define FUNCTION_OK_FOR_SIBCALL(DECL) \
1651 (! TARGET_SHCOMPACT || current_function_args_info.stack_regs == 0)
1653 /* Update the data in CUM to advance over an argument
1654 of mode MODE and data type TYPE.
1655 (TYPE is null for libcalls where that information may not be
1658 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
1659 if ((CUM).force_mem) \
1660 (CUM).force_mem = 0; \
1661 else if (TARGET_SH5) \
1663 tree TYPE_ = ((CUM).byref && (TYPE) \
1664 ? TREE_TYPE (TYPE) \
1666 enum machine_mode MODE_ = ((CUM).byref && (TYPE) \
1667 ? TYPE_MODE (TYPE_) \
1669 int dwords = (((CUM).byref \
1671 : (MODE_) == BLKmode \
1672 ? int_size_in_bytes (TYPE_) \
1673 : GET_MODE_SIZE (MODE_)) + 7) / 8; \
1674 int numregs = MIN (dwords, NPARM_REGS (SImode) \
1675 - (CUM).arg_count[(int) SH_ARG_INT]); \
1679 (CUM).arg_count[(int) SH_ARG_INT] += numregs; \
1680 if (TARGET_SHCOMPACT \
1681 && SHCOMPACT_FORCE_ON_STACK (MODE_, TYPE_)) \
1683 |= CALL_COOKIE_INT_REG (((CUM).arg_count[(int) SH_ARG_INT] \
1685 else if ((CUM).byref) \
1687 if (! (CUM).outgoing) \
1688 (CUM).stack_regs += numregs; \
1689 (CUM).byref_regs += numregs; \
1693 |= CALL_COOKIE_INT_REG (((CUM).arg_count[(int) SH_ARG_INT] \
1695 while (--numregs); \
1697 |= CALL_COOKIE_INT_REG (((CUM).arg_count[(int) SH_ARG_INT] \
1700 else if (dwords > numregs) \
1702 int pushregs = numregs; \
1704 if (TARGET_SHCOMPACT) \
1705 (CUM).stack_regs += numregs; \
1706 while (pushregs < NPARM_REGS (SImode) - 1 \
1707 && (CALL_COOKIE_INT_REG_GET \
1708 ((CUM).call_cookie, \
1709 NPARM_REGS (SImode) - pushregs) \
1713 &= ~ CALL_COOKIE_INT_REG (NPARM_REGS (SImode) \
1717 if (numregs == NPARM_REGS (SImode)) \
1719 |= CALL_COOKIE_INT_REG (0, 1) \
1720 | CALL_COOKIE_STACKSEQ (numregs - 1); \
1723 |= CALL_COOKIE_STACKSEQ (numregs); \
1726 if (GET_SH_ARG_CLASS (MODE_) == SH_ARG_FLOAT \
1727 && ((NAMED) || ! (CUM).prototype_p)) \
1729 if ((MODE_) == SFmode && (CUM).free_single_fp_reg) \
1730 (CUM).free_single_fp_reg = 0; \
1731 else if ((CUM).arg_count[(int) SH_ARG_FLOAT] \
1732 < NPARM_REGS (SFmode)) \
1735 = MIN ((GET_MODE_SIZE (MODE_) + 7) / 8 * 2, \
1736 NPARM_REGS (SFmode) \
1737 - (CUM).arg_count[(int) SH_ARG_FLOAT]); \
1739 (CUM).arg_count[(int) SH_ARG_FLOAT] += numfpregs; \
1741 if (TARGET_SHCOMPACT && ! (CUM).prototype_p) \
1743 if ((CUM).outgoing && numregs > 0) \
1747 |= (CALL_COOKIE_INT_REG \
1748 ((CUM).arg_count[(int) SH_ARG_INT] \
1749 - numregs + ((numfpregs - 2) / 2), \
1750 4 + ((CUM).arg_count[(int) SH_ARG_FLOAT] \
1751 - numfpregs) / 2)); \
1753 while (numfpregs -= 2); \
1755 else if ((MODE_) == SFmode && (NAMED) \
1756 && ((CUM).arg_count[(int) SH_ARG_FLOAT] \
1757 < NPARM_REGS (SFmode))) \
1758 (CUM).free_single_fp_reg \
1759 = FIRST_FP_PARM_REG - numfpregs \
1760 + (CUM).arg_count[(int) SH_ARG_FLOAT] + 1; \
1764 else if (! TARGET_SH4 || PASS_IN_REG_P ((CUM), (MODE), (TYPE))) \
1765 ((CUM).arg_count[(int) GET_SH_ARG_CLASS (MODE)] \
1766 = (ROUND_REG ((CUM), (MODE)) \
1767 + ((MODE) == BLKmode \
1768 ? ROUND_ADVANCE (int_size_in_bytes (TYPE)) \
1769 : ROUND_ADVANCE (GET_MODE_SIZE (MODE)))))
1771 /* Return boolean indicating arg of mode MODE will be passed in a reg.
1772 This macro is only used in this file. */
1774 #define PASS_IN_REG_P(CUM, MODE, TYPE) \
1776 || (! TREE_ADDRESSABLE ((tree)(TYPE)) \
1777 && (! TARGET_HITACHI || ! AGGREGATE_TYPE_P (TYPE)))) \
1778 && ! (CUM).force_mem \
1780 ? ((MODE) == BLKmode \
1781 ? (((CUM).arg_count[(int) SH_ARG_INT] * UNITS_PER_WORD \
1782 + int_size_in_bytes (TYPE)) \
1783 <= NPARM_REGS (SImode) * UNITS_PER_WORD) \
1784 : ((ROUND_REG((CUM), (MODE)) \
1785 + HARD_REGNO_NREGS (BASE_ARG_REG (MODE), (MODE))) \
1786 <= NPARM_REGS (MODE))) \
1787 : ROUND_REG ((CUM), (MODE)) < NPARM_REGS (MODE)))
1789 /* Define where to put the arguments to a function.
1790 Value is zero to push the argument on the stack,
1791 or a hard register in which to store the argument.
1793 MODE is the argument's machine mode.
1794 TYPE is the data type of the argument (as a tree).
1795 This is null for libcalls where that information may
1797 CUM is a variable of type CUMULATIVE_ARGS which gives info about
1798 the preceding args and about the function being called.
1799 NAMED is nonzero if this argument is a named parameter
1800 (otherwise it is an extra parameter matching an ellipsis).
1802 On SH the first args are normally in registers
1803 and the rest are pushed. Any arg that starts within the first
1804 NPARM_REGS words is at least partially passed in a register unless
1805 its data type forbids. */
1807 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
1809 && PASS_IN_REG_P ((CUM), (MODE), (TYPE)) \
1811 || (! TARGET_HITACHI && (TARGET_SH3E || ! current_function_varargs)))) \
1812 ? gen_rtx_REG ((MODE), \
1813 ((BASE_ARG_REG (MODE) + ROUND_REG ((CUM), (MODE))) \
1814 ^ ((MODE) == SFmode && TARGET_SH4 \
1815 && TARGET_LITTLE_ENDIAN != 0))) \
1817 ? ((MODE) == VOIDmode && TARGET_SHCOMPACT \
1818 ? GEN_INT ((CUM).call_cookie) \
1819 /* The following test assumes unnamed arguments are promoted to \
1821 : (MODE) == SFmode && (CUM).free_single_fp_reg \
1822 ? SH5_PROTOTYPED_FLOAT_ARG ((CUM), (MODE), (CUM).free_single_fp_reg) \
1823 : (GET_SH_ARG_CLASS (MODE) == SH_ARG_FLOAT \
1824 && ((NAMED) || ! (CUM).prototype_p) \
1825 && (CUM).arg_count[(int) SH_ARG_FLOAT] < NPARM_REGS (SFmode)) \
1826 ? ((! (CUM).prototype_p && TARGET_SHMEDIA) \
1827 ? SH5_PROTOTYPELESS_FLOAT_ARG ((CUM), (MODE)) \
1828 : SH5_PROTOTYPED_FLOAT_ARG ((CUM), (MODE), \
1830 + (CUM).arg_count[(int) SH_ARG_FLOAT])) \
1831 : ((CUM).arg_count[(int) SH_ARG_INT] < NPARM_REGS (SImode) \
1832 && (! TARGET_SHCOMPACT \
1833 || (! SHCOMPACT_FORCE_ON_STACK ((MODE), (TYPE)) \
1834 && ! SH5_WOULD_BE_PARTIAL_NREGS ((CUM), (MODE), \
1835 (TYPE), (NAMED))))) \
1836 ? gen_rtx_REG ((MODE), (FIRST_PARM_REG \
1837 + (CUM).arg_count[(int) SH_ARG_INT])) \
1841 /* Whether an argument must be passed by reference. On SHcompact, we
1842 pretend arguments wider than 32-bits that would have been passed in
1843 registers are passed by reference, so that an SHmedia trampoline
1844 loads them into the full 64-bits registers. */
1845 #define FUNCTION_ARG_PASS_BY_REFERENCE(CUM,MODE,TYPE,NAMED) \
1846 (MUST_PASS_IN_STACK ((MODE), (TYPE)) \
1847 || SHCOMPACT_BYREF ((CUM), (MODE), (TYPE), (NAMED)))
1849 #define SHCOMPACT_BYREF(CUM, MODE, TYPE, NAMED) \
1851 = (TARGET_SHCOMPACT \
1852 && (CUM).arg_count[(int) SH_ARG_INT] < NPARM_REGS (SImode) \
1853 && (! (NAMED) || GET_SH_ARG_CLASS (MODE) == SH_ARG_INT \
1854 || (GET_SH_ARG_CLASS (MODE) == SH_ARG_FLOAT \
1855 && ((CUM).arg_count[(int) SH_ARG_FLOAT] \
1856 >= NPARM_REGS (SFmode)))) \
1857 && ((MODE) == BLKmode ? int_size_in_bytes (TYPE) \
1858 : GET_MODE_SIZE (MODE)) > 4 \
1859 && ! SHCOMPACT_FORCE_ON_STACK ((MODE), (TYPE)) \
1860 && ! SH5_WOULD_BE_PARTIAL_NREGS ((CUM), (MODE), \
1862 ? ((MODE) == BLKmode ? int_size_in_bytes (TYPE) \
1863 : GET_MODE_SIZE (MODE)) \
1866 /* If an argument of size 5, 6 or 7 bytes is to be passed in a 64-bit
1867 register in SHcompact mode, it must be padded in the most
1868 significant end. This means that passing it by reference wouldn't
1869 pad properly on a big-endian machine. In this particular case, we
1870 pass this argument on the stack, in a way that the call trampoline
1871 will load its value into the appropriate register. */
1872 #define SHCOMPACT_FORCE_ON_STACK(MODE,TYPE) \
1873 ((MODE) == BLKmode \
1874 && TARGET_SHCOMPACT \
1875 && ! TARGET_LITTLE_ENDIAN \
1876 && int_size_in_bytes (TYPE) > 4 \
1877 && int_size_in_bytes (TYPE) < 8)
1879 /* Minimum alignment for an argument to be passed by callee-copy
1880 reference. We need such arguments to be aligned to 8 byte
1881 boundaries, because they'll be loaded using quad loads. */
1882 #define SH_MIN_ALIGN_FOR_CALLEE_COPY (8 * BITS_PER_UNIT)
1884 #define FUNCTION_ARG_CALLEE_COPIES(CUM,MODE,TYPE,NAMED) \
1886 && (((MODE) == BLKmode ? TYPE_ALIGN (TYPE) \
1887 : GET_MODE_ALIGNMENT (MODE)) \
1888 % SH_MIN_ALIGN_FOR_CALLEE_COPY == 0))
1890 /* The SH5 ABI requires floating-point arguments to be passed to
1891 functions without a prototype in both an FP register and a regular
1892 register or the stack. When passing the argument in both FP and
1893 general-purpose registers, list the FP register first. */
1894 #define SH5_PROTOTYPELESS_FLOAT_ARG(CUM,MODE) \
1900 ((CUM).arg_count[(int) SH_ARG_INT] < NPARM_REGS (SImode) \
1901 ? gen_rtx_REG ((MODE), FIRST_FP_PARM_REG \
1902 + (CUM).arg_count[(int) SH_ARG_FLOAT]) \
1907 ((CUM).arg_count[(int) SH_ARG_INT] < NPARM_REGS (SImode) \
1908 ? gen_rtx_REG ((MODE), FIRST_PARM_REG \
1909 + (CUM).arg_count[(int) SH_ARG_INT]) \
1910 : gen_rtx_REG ((MODE), FIRST_FP_PARM_REG \
1911 + (CUM).arg_count[(int) SH_ARG_FLOAT])), \
1914 /* The SH5 ABI requires regular registers or stack slots to be
1915 reserved for floating-point arguments. Registers are taken care of
1916 in FUNCTION_ARG_ADVANCE, but stack slots must be reserved here.
1917 Unfortunately, there's no way to just reserve a stack slot, so
1918 we'll end up needlessly storing a copy of the argument in the
1919 stack. For incoming arguments, however, the PARALLEL will be
1920 optimized to the register-only form, and the value in the stack
1921 slot won't be used at all. */
1922 #define SH5_PROTOTYPED_FLOAT_ARG(CUM,MODE,REG) \
1923 ((CUM).arg_count[(int) SH_ARG_INT] < NPARM_REGS (SImode) \
1924 ? gen_rtx_REG ((MODE), (REG)) \
1925 : gen_rtx_PARALLEL ((MODE), \
1928 (VOIDmode, NULL_RTX, \
1931 (VOIDmode, gen_rtx_REG ((MODE), \
1935 #define STRICT_ARGUMENT_NAMING TARGET_SH5
1937 #define PRETEND_OUTGOING_VARARGS_NAMED (! TARGET_HITACHI && ! TARGET_SH5)
1939 /* For an arg passed partly in registers and partly in memory,
1940 this is the number of registers used.
1941 For args passed entirely in registers or entirely in memory, zero.
1943 We sometimes split args. */
1945 #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \
1947 && PASS_IN_REG_P ((CUM), (MODE), (TYPE)) \
1949 && (ROUND_REG ((CUM), (MODE)) \
1950 + ((MODE) != BLKmode \
1951 ? ROUND_ADVANCE (GET_MODE_SIZE (MODE)) \
1952 : ROUND_ADVANCE (int_size_in_bytes (TYPE))) \
1953 > NPARM_REGS (MODE))) \
1954 ? NPARM_REGS (MODE) - ROUND_REG ((CUM), (MODE)) \
1955 : (SH5_WOULD_BE_PARTIAL_NREGS ((CUM), (MODE), (TYPE), (NAMED)) \
1956 && ! TARGET_SHCOMPACT) \
1957 ? NPARM_REGS (SImode) - (CUM).arg_count[(int) SH_ARG_INT] \
1960 #define SH5_WOULD_BE_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \
1961 (TARGET_SH5 && (MODE) == BLKmode \
1962 && ((CUM).arg_count[(int) SH_ARG_INT] \
1963 + (int_size_in_bytes (TYPE) + 7) / 8) > NPARM_REGS (SImode))
1965 /* Perform any needed actions needed for a function that is receiving a
1966 variable number of arguments. */
1968 /* We actually emit the code in sh_expand_prologue. We used to use
1969 a static variable to flag that we need to emit this code, but that
1970 doesn't when inlining, when functions are deferred and then emitted
1971 later. Fortunately, we already have two flags that are part of struct
1972 function that tell if a function uses varargs or stdarg. */
1973 #define SETUP_INCOMING_VARARGS(ASF, MODE, TYPE, PAS, ST) do \
1974 if (! current_function_varargs && ! current_function_stdarg) \
1978 /* Define the `__builtin_va_list' type for the ABI. */
1979 #define BUILD_VA_LIST_TYPE(VALIST) \
1980 (VALIST) = sh_build_va_list ()
1982 /* Implement `va_start' for varargs and stdarg. */
1983 #define EXPAND_BUILTIN_VA_START(stdarg, valist, nextarg) \
1984 sh_va_start (stdarg, valist, nextarg)
1986 /* Implement `va_arg'. */
1987 #define EXPAND_BUILTIN_VA_ARG(valist, type) \
1988 sh_va_arg (valist, type)
1990 /* Call the function profiler with a given profile label.
1991 We use two .aligns, so as to make sure that both the .long is aligned
1992 on a 4 byte boundary, and that the .long is a fixed distance (2 bytes)
1993 from the trapa instruction. */
1995 #define FUNCTION_PROFILER(STREAM,LABELNO) \
1997 fprintf((STREAM), "\t.align\t2\n"); \
1998 fprintf((STREAM), "\ttrapa\t#33\n"); \
1999 fprintf((STREAM), "\t.align\t2\n"); \
2000 asm_fprintf((STREAM), "\t.long\t%LLP%d\n", (LABELNO)); \
2003 /* Define this macro if the code for function profiling should come
2004 before the function prologue. Normally, the profiling code comes
2007 #define PROFILE_BEFORE_PROLOGUE
2009 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
2010 the stack pointer does not matter. The value is tested only in
2011 functions that have frame pointers.
2012 No definition is equivalent to always zero. */
2014 #define EXIT_IGNORE_STACK 1
2017 On the SH, the trampoline looks like
2018 2 0002 D202 mov.l l2,r2
2019 1 0000 D301 mov.l l1,r3
2022 5 0008 00000000 l1: .long area
2023 6 000c 00000000 l2: .long function */
2025 /* Length in units of the trampoline for entering a nested function. */
2026 #define TRAMPOLINE_SIZE (TARGET_SHMEDIA64 ? 40 : TARGET_SH5 ? 32 : 16)
2028 /* Alignment required for a trampoline in bits . */
2029 #define TRAMPOLINE_ALIGNMENT \
2030 ((CACHE_LOG < 3 || (TARGET_SMALLCODE && ! TARGET_HARVARD)) ? 32 : 64)
2032 /* Emit RTL insns to initialize the variable parts of a trampoline.
2033 FNADDR is an RTX for the address of the function's pure code.
2034 CXT is an RTX for the static chain value for the function. */
2036 #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) do \
2040 rtx tramp_templ = gen_rtx_SYMBOL_REF (Pmode, \
2041 "__GCC_nested_trampoline"); \
2042 int fixed_len = TRAMPOLINE_SIZE - 2 * GET_MODE_SIZE (Pmode); \
2044 tramp_templ = gen_datalabel_ref (tramp_templ); \
2045 emit_block_move (gen_rtx_MEM (BLKmode, (TRAMP)), \
2046 gen_rtx_MEM (BLKmode, tramp_templ), \
2047 GEN_INT (fixed_len)); \
2048 emit_move_insn (gen_rtx_MEM (Pmode, plus_constant ((TRAMP), \
2051 emit_move_insn (gen_rtx_MEM (Pmode, \
2052 plus_constant ((TRAMP), \
2054 + GET_MODE_SIZE (Pmode))), \
2056 emit_insn (gen_ic_invalidate_line (TRAMP)); \
2059 emit_move_insn (gen_rtx_MEM (SImode, (TRAMP)), \
2060 GEN_INT (trunc_int_for_mode \
2061 (TARGET_LITTLE_ENDIAN ? 0xd301d202 : 0xd202d301,\
2063 emit_move_insn (gen_rtx_MEM (SImode, plus_constant ((TRAMP), 4)), \
2064 GEN_INT (TARGET_LITTLE_ENDIAN ? 0x0009422b : 0x422b0009));\
2065 emit_move_insn (gen_rtx_MEM (SImode, plus_constant ((TRAMP), 8)), \
2067 emit_move_insn (gen_rtx_MEM (SImode, plus_constant ((TRAMP), 12)), \
2069 if (TARGET_HARVARD) \
2071 if (TARGET_USERMODE) \
2072 emit_library_call (gen_rtx_SYMBOL_REF (Pmode, "__ic_invalidate"),\
2073 0, VOIDmode, 1, (TRAMP), SImode); \
2075 emit_insn (gen_ic_invalidate_line (TRAMP)); \
2079 /* On SH5, trampolines are SHmedia code, so add 1 to the address. */
2081 #define TRAMPOLINE_ADJUST_ADDRESS(TRAMP) do \
2084 (TRAMP) = expand_simple_binop (Pmode, PLUS, (TRAMP), GEN_INT (1), \
2085 gen_reg_rtx (Pmode), 0, \
2089 /* A C expression whose value is RTL representing the value of the return
2090 address for the frame COUNT steps up from the current frame.
2091 FRAMEADDR is already the frame pointer of the COUNT frame, so we
2092 can ignore COUNT. */
2094 #define RETURN_ADDR_RTX(COUNT, FRAME) \
2096 ? get_hard_reg_initial_val (Pmode, TARGET_SHMEDIA ? PR_MEDIA_REG : PR_REG) \
2099 /* A C expression whose value is RTL representing the location of the
2100 incoming return address at the beginning of any function, before the
2101 prologue. This RTL is either a REG, indicating that the return
2102 value is saved in REG, or a MEM representing a location in
2104 #define INCOMING_RETURN_ADDR_RTX \
2105 gen_rtx_REG (Pmode, TARGET_SHMEDIA ? PR_MEDIA_REG : PR_REG)
2107 /* Generate necessary RTL for __builtin_saveregs(). */
2108 #define EXPAND_BUILTIN_SAVEREGS() sh_builtin_saveregs ()
2110 /* Addressing modes, and classification of registers for them. */
2111 #define HAVE_POST_INCREMENT TARGET_SH1
2112 /*#define HAVE_PRE_INCREMENT 1*/
2113 /*#define HAVE_POST_DECREMENT 1*/
2114 #define HAVE_PRE_DECREMENT TARGET_SH1
2116 #define USE_LOAD_POST_INCREMENT(mode) ((mode == SImode || mode == DImode) \
2118 #define USE_LOAD_PRE_DECREMENT(mode) 0
2119 #define USE_STORE_POST_INCREMENT(mode) 0
2120 #define USE_STORE_PRE_DECREMENT(mode) ((mode == SImode || mode == DImode) \
2123 #define MOVE_BY_PIECES_P(SIZE, ALIGN) (move_by_pieces_ninsns (SIZE, ALIGN) \
2124 < (TARGET_SMALLCODE ? 2 : \
2125 ((ALIGN >= 32) ? 16 : 2)))
2127 /* Macros to check register numbers against specific register classes. */
2129 /* These assume that REGNO is a hard or pseudo reg number.
2130 They give nonzero only if REGNO is a hard reg of the suitable class
2131 or a pseudo reg currently allocated to a suitable hard reg.
2132 Since they use reg_renumber, they are safe only once reg_renumber
2133 has been allocated, which happens in local-alloc.c. */
2135 #define REGNO_OK_FOR_BASE_P(REGNO) \
2136 (GENERAL_OR_AP_REGISTER_P (REGNO) \
2137 || GENERAL_OR_AP_REGISTER_P (reg_renumber[(REGNO)]))
2138 #define REGNO_OK_FOR_INDEX_P(REGNO) \
2140 ? (GENERAL_REGISTER_P (REGNO) \
2141 || GENERAL_REGISTER_P ((unsigned) reg_renumber[(REGNO)])) \
2142 : (REGNO) == R0_REG || (unsigned) reg_renumber[(REGNO)] == R0_REG)
2144 /* Maximum number of registers that can appear in a valid memory
2147 #define MAX_REGS_PER_ADDRESS 2
2149 /* Recognize any constant value that is a valid address. */
2151 #define CONSTANT_ADDRESS_P(X) (GET_CODE (X) == LABEL_REF)
2153 /* Nonzero if the constant value X is a legitimate general operand. */
2155 #define LEGITIMATE_CONSTANT_P(X) \
2157 ? (GET_MODE (X) != DFmode \
2158 || (X) == CONST0_RTX (GET_MODE (X)) \
2159 || ! TARGET_SHMEDIA_FPU \
2160 || TARGET_SHMEDIA64) \
2161 : (GET_CODE (X) != CONST_DOUBLE \
2162 || GET_MODE (X) == DFmode || GET_MODE (X) == SFmode \
2163 || (TARGET_SH3E && (fp_zero_operand (X) || fp_one_operand (X)))))
2165 /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
2166 and check its validity for a certain class.
2167 We have two alternate definitions for each of them.
2168 The usual definition accepts all pseudo regs; the other rejects
2169 them unless they have been allocated suitable hard regs.
2170 The symbol REG_OK_STRICT causes the latter definition to be used. */
2172 #ifndef REG_OK_STRICT
2174 /* Nonzero if X is a hard reg that can be used as a base reg
2175 or if it is a pseudo reg. */
2176 #define REG_OK_FOR_BASE_P(X) \
2177 (GENERAL_OR_AP_REGISTER_P (REGNO (X)) || REGNO (X) >= FIRST_PSEUDO_REGISTER)
2179 /* Nonzero if X is a hard reg that can be used as an index
2180 or if it is a pseudo reg. */
2181 #define REG_OK_FOR_INDEX_P(X) \
2182 ((TARGET_SHMEDIA ? GENERAL_REGISTER_P (REGNO (X)) \
2183 : REGNO (X) == R0_REG) || REGNO (X) >= FIRST_PSEUDO_REGISTER)
2185 /* Nonzero if X/OFFSET is a hard reg that can be used as an index
2186 or if X is a pseudo reg. */
2187 #define SUBREG_OK_FOR_INDEX_P(X, OFFSET) \
2188 ((TARGET_SHMEDIA ? GENERAL_REGISTER_P (REGNO (X)) \
2189 : REGNO (X) == R0_REG && OFFSET == 0) || REGNO (X) >= FIRST_PSEUDO_REGISTER)
2193 /* Nonzero if X is a hard reg that can be used as a base reg. */
2194 #define REG_OK_FOR_BASE_P(X) \
2195 REGNO_OK_FOR_BASE_P (REGNO (X))
2197 /* Nonzero if X is a hard reg that can be used as an index. */
2198 #define REG_OK_FOR_INDEX_P(X) \
2199 REGNO_OK_FOR_INDEX_P (REGNO (X))
2201 /* Nonzero if X/OFFSET is a hard reg that can be used as an index. */
2202 #define SUBREG_OK_FOR_INDEX_P(X, OFFSET) \
2203 (REGNO_OK_FOR_INDEX_P (REGNO (X)) && (OFFSET) == 0)
2207 /* The 'Q' constraint is a pc relative load operand. */
2208 #define EXTRA_CONSTRAINT_Q(OP) \
2209 (GET_CODE (OP) == MEM \
2210 && ((GET_CODE (XEXP ((OP), 0)) == LABEL_REF) \
2211 || (GET_CODE (XEXP ((OP), 0)) == CONST \
2212 && GET_CODE (XEXP (XEXP ((OP), 0), 0)) == PLUS \
2213 && GET_CODE (XEXP (XEXP (XEXP ((OP), 0), 0), 0)) == LABEL_REF \
2214 && GET_CODE (XEXP (XEXP (XEXP ((OP), 0), 0), 1)) == CONST_INT)))
2216 /* The `S' constraint is a 16-bit constant, literal or symbolic. */
2217 #define EXTRA_CONSTRAINT_S(OP) \
2218 (GET_CODE (OP) == CONST \
2219 && GET_CODE (XEXP ((OP), 0)) == SIGN_EXTEND \
2220 && GET_MODE (XEXP ((OP), 0)) == DImode \
2221 && GET_CODE (XEXP (XEXP ((OP), 0), 0)) == TRUNCATE \
2222 && GET_MODE (XEXP (XEXP ((OP), 0), 0)) == HImode \
2223 && (MOVI_SHORI_BASE_OPERAND_P (XEXP (XEXP (XEXP ((OP), 0), 0), 0)) \
2224 || (GET_CODE (XEXP (XEXP (XEXP ((OP), 0), 0), 0)) == ASHIFTRT \
2225 && (MOVI_SHORI_BASE_OPERAND_P \
2226 (XEXP (XEXP (XEXP (XEXP ((OP), 0), 0), 0), 0))) \
2227 && GET_CODE (XEXP (XEXP (XEXP (XEXP ((OP), 0), 0), 0), \
2230 /* Check whether OP is a datalabel unspec. */
2231 #define DATALABEL_REF_NO_CONST_P(OP) \
2232 (GET_CODE (OP) == UNSPEC \
2233 && XINT ((OP), 1) == UNSPEC_DATALABEL \
2234 && XVECLEN ((OP), 0) == 1 \
2235 && (GET_CODE (XVECEXP ((OP), 0, 0)) == SYMBOL_REF \
2236 || GET_CODE (XVECEXP ((OP), 0, 0)) == LABEL_REF))
2238 /* Check whether OP is a datalabel unspec, possibly enclosed within a
2240 #define DATALABEL_REF_P(OP) \
2241 ((GET_CODE (OP) == CONST && DATALABEL_REF_NO_CONST_P (XEXP ((OP), 0))) \
2242 || DATALABEL_REF_NO_CONST_P (OP))
2244 #define GOT_ENTRY_P(OP) \
2245 (GET_CODE (OP) == CONST && GET_CODE (XEXP ((OP), 0)) == UNSPEC \
2246 && XINT (XEXP ((OP), 0), 1) == UNSPEC_GOT)
2248 #define GOTPLT_ENTRY_P(OP) \
2249 (GET_CODE (OP) == CONST && GET_CODE (XEXP ((OP), 0)) == UNSPEC \
2250 && XINT (XEXP ((OP), 0), 1) == UNSPEC_GOTPLT)
2252 #define GOTOFF_P(OP) \
2253 (GET_CODE (OP) == CONST && GET_CODE (XEXP ((OP), 0)) == UNSPEC \
2254 && XINT (XEXP ((OP), 0), 1) == UNSPEC_GOTOFF)
2256 #define PIC_ADDR_P(OP) \
2257 (GET_CODE (OP) == CONST && GET_CODE (XEXP ((OP), 0)) == UNSPEC \
2258 && XINT (XEXP ((OP), 0), 1) == UNSPEC_PIC)
2260 #define NON_PIC_REFERENCE_P(OP) \
2261 (GET_CODE (OP) == LABEL_REF || GET_CODE (OP) == SYMBOL_REF \
2262 || DATALABEL_REF_P (OP) \
2263 || (GET_CODE (OP) == CONST && GET_CODE (XEXP ((OP), 0)) == PLUS \
2264 && (GET_CODE (XEXP (XEXP ((OP), 0), 0)) == SYMBOL_REF \
2265 || DATALABEL_REF_P (XEXP (XEXP ((OP), 0), 0))) \
2266 && GET_CODE (XEXP (XEXP ((OP), 0), 1)) == CONST_INT))
2268 #define PIC_REFERENCE_P(OP) \
2269 (GOT_ENTRY_P (OP) || GOTPLT_ENTRY_P (OP) \
2270 || GOTOFF_P (OP) || PIC_ADDR_P (OP))
2272 #define MOVI_SHORI_BASE_OPERAND_P(OP) \
2273 (flag_pic ? PIC_REFERENCE_P (OP) : NON_PIC_REFERENCE_P (OP))
2275 /* The `T' constraint is a label or a symbol. */
2276 #define EXTRA_CONSTRAINT_T(OP) \
2277 (NON_PIC_REFERENCE_P (OP))
2279 #define EXTRA_CONSTRAINT(OP, C) \
2280 ((C) == 'Q' ? EXTRA_CONSTRAINT_Q (OP) \
2281 : (C) == 'S' ? EXTRA_CONSTRAINT_S (OP) \
2282 : (C) == 'T' ? EXTRA_CONSTRAINT_T (OP) \
2285 /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
2286 that is a valid memory address for an instruction.
2287 The MODE argument is the machine mode for the MEM expression
2288 that wants to use this address. */
2290 #define MODE_DISP_OK_4(X,MODE) \
2291 (GET_MODE_SIZE (MODE) == 4 && (unsigned) INTVAL (X) < 64 \
2292 && ! (INTVAL (X) & 3) && ! (TARGET_SH3E && (MODE) == SFmode))
2294 #define MODE_DISP_OK_8(X,MODE) \
2295 ((GET_MODE_SIZE(MODE)==8) && ((unsigned)INTVAL(X)<60) \
2296 && ! (INTVAL(X) & 3) && ! (TARGET_SH4 && (MODE) == DFmode))
2298 #define BASE_REGISTER_RTX_P(X) \
2299 ((GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) \
2300 || (GET_CODE (X) == SUBREG \
2301 && GET_CODE (SUBREG_REG (X)) == REG \
2302 && REG_OK_FOR_BASE_P (SUBREG_REG (X))))
2304 /* Since this must be r0, which is a single register class, we must check
2305 SUBREGs more carefully, to be sure that we don't accept one that extends
2306 outside the class. */
2307 #define INDEX_REGISTER_RTX_P(X) \
2308 ((GET_CODE (X) == REG && REG_OK_FOR_INDEX_P (X)) \
2309 || (GET_CODE (X) == SUBREG \
2310 && GET_CODE (SUBREG_REG (X)) == REG \
2311 && SUBREG_OK_FOR_INDEX_P (SUBREG_REG (X), SUBREG_BYTE (X))))
2313 /* Jump to LABEL if X is a valid address RTX. This must also take
2314 REG_OK_STRICT into account when deciding about valid registers, but it uses
2315 the above macros so we are in luck.
2323 /* ??? The SH3e does not have the REG+disp addressing mode when loading values
2324 into the FRx registers. We implement this by setting the maximum offset
2325 to zero when the value is SFmode. This also restricts loading of SFmode
2326 values into the integer registers, but that can't be helped. */
2328 /* The SH allows a displacement in a QI or HI amode, but only when the
2329 other operand is R0. GCC doesn't handle this very well, so we forgo
2332 A legitimate index for a QI or HI is 0, SI can be any number 0..63,
2333 DI can be any number 0..60. */
2335 #define GO_IF_LEGITIMATE_INDEX(MODE, OP, LABEL) \
2337 if (GET_CODE (OP) == CONST_INT) \
2339 if (TARGET_SHMEDIA) \
2341 int MODE_SIZE = GET_MODE_SIZE (MODE); \
2342 if (! (INTVAL (OP) & (MODE_SIZE - 1)) \
2343 && INTVAL (OP) >= -512 * MODE_SIZE \
2344 && INTVAL (OP) < 512 * MODE_SIZE) \
2349 if (MODE_DISP_OK_4 ((OP), (MODE))) goto LABEL; \
2350 if (MODE_DISP_OK_8 ((OP), (MODE))) goto LABEL; \
2354 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \
2356 if (BASE_REGISTER_RTX_P (X)) \
2358 else if ((GET_CODE (X) == POST_INC || GET_CODE (X) == PRE_DEC) \
2359 && ! TARGET_SHMEDIA \
2360 && BASE_REGISTER_RTX_P (XEXP ((X), 0))) \
2362 else if (GET_CODE (X) == PLUS \
2363 && ((MODE) != PSImode || reload_completed)) \
2365 rtx xop0 = XEXP ((X), 0); \
2366 rtx xop1 = XEXP ((X), 1); \
2367 if (GET_MODE_SIZE (MODE) <= 8 && BASE_REGISTER_RTX_P (xop0)) \
2368 GO_IF_LEGITIMATE_INDEX ((MODE), xop1, LABEL); \
2369 if (GET_MODE_SIZE (MODE) <= 4 \
2370 || (TARGET_SHMEDIA && GET_MODE_SIZE (MODE) <= 8) \
2371 || (TARGET_SH4 && TARGET_FMOVD && MODE == DFmode)) \
2373 if (BASE_REGISTER_RTX_P (xop1) && INDEX_REGISTER_RTX_P (xop0))\
2375 if (INDEX_REGISTER_RTX_P (xop1) && BASE_REGISTER_RTX_P (xop0))\
2381 /* Try machine-dependent ways of modifying an illegitimate address
2382 to be legitimate. If we find one, return the new, valid address.
2383 This macro is used in only one place: `memory_address' in explow.c.
2385 OLDX is the address as it was before break_out_memory_refs was called.
2386 In some cases it is useful to look at this to decide what needs to be done.
2388 MODE and WIN are passed so that this macro can use
2389 GO_IF_LEGITIMATE_ADDRESS.
2391 It is always safe for this macro to do nothing. It exists to recognize
2392 opportunities to optimize the output.
2394 For the SH, if X is almost suitable for indexing, but the offset is
2395 out of range, convert it into a normal form so that cse has a chance
2396 of reducing the number of address registers used. */
2398 #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) \
2401 (X) = legitimize_pic_address (OLDX, MODE, NULL_RTX); \
2402 if (GET_CODE (X) == PLUS \
2403 && (GET_MODE_SIZE (MODE) == 4 \
2404 || GET_MODE_SIZE (MODE) == 8) \
2405 && GET_CODE (XEXP ((X), 1)) == CONST_INT \
2406 && BASE_REGISTER_RTX_P (XEXP ((X), 0)) \
2407 && ! TARGET_SHMEDIA \
2408 && ! (TARGET_SH4 && (MODE) == DFmode) \
2409 && ! (TARGET_SH3E && (MODE) == SFmode)) \
2411 rtx index_rtx = XEXP ((X), 1); \
2412 HOST_WIDE_INT offset = INTVAL (index_rtx), offset_base; \
2415 GO_IF_LEGITIMATE_INDEX ((MODE), index_rtx, WIN); \
2416 /* On rare occasions, we might get an unaligned pointer \
2417 that is indexed in a way to give an aligned address. \
2418 Therefore, keep the lower two bits in offset_base. */ \
2419 /* Instead of offset_base 128..131 use 124..127, so that \
2420 simple add suffices. */ \
2423 offset_base = ((offset + 4) & ~60) - 4; \
2426 offset_base = offset & ~60; \
2427 /* Sometimes the normal form does not suit DImode. We \
2428 could avoid that by using smaller ranges, but that \
2429 would give less optimized code when SImode is \
2431 if (GET_MODE_SIZE (MODE) + offset - offset_base <= 64) \
2433 sum = expand_binop (Pmode, add_optab, XEXP ((X), 0), \
2434 GEN_INT (offset_base), NULL_RTX, 0, \
2437 (X) = gen_rtx_PLUS (Pmode, sum, GEN_INT (offset - offset_base)); \
2443 /* A C compound statement that attempts to replace X, which is an address
2444 that needs reloading, with a valid memory address for an operand of
2445 mode MODE. WIN is a C statement label elsewhere in the code.
2447 Like for LEGITIMIZE_ADDRESS, for the SH we try to get a normal form
2448 of the address. That will allow inheritance of the address reloads. */
2450 #define LEGITIMIZE_RELOAD_ADDRESS(X,MODE,OPNUM,TYPE,IND_LEVELS,WIN) \
2452 if (GET_CODE (X) == PLUS \
2453 && (GET_MODE_SIZE (MODE) == 4 || GET_MODE_SIZE (MODE) == 8) \
2454 && GET_CODE (XEXP (X, 1)) == CONST_INT \
2455 && BASE_REGISTER_RTX_P (XEXP (X, 0)) \
2456 && ! TARGET_SHMEDIA \
2457 && ! (TARGET_SH4 && (MODE) == DFmode) \
2458 && ! ((MODE) == PSImode && (TYPE) == RELOAD_FOR_INPUT_ADDRESS)) \
2460 rtx index_rtx = XEXP (X, 1); \
2461 HOST_WIDE_INT offset = INTVAL (index_rtx), offset_base; \
2464 if (TARGET_SH3E && MODE == SFmode) \
2467 push_reload (index_rtx, NULL_RTX, &XEXP (X, 1), NULL, \
2468 INDEX_REG_CLASS, Pmode, VOIDmode, 0, 0, (OPNUM), \
2472 /* Instead of offset_base 128..131 use 124..127, so that \
2473 simple add suffices. */ \
2476 offset_base = ((offset + 4) & ~60) - 4; \
2479 offset_base = offset & ~60; \
2480 /* Sometimes the normal form does not suit DImode. We \
2481 could avoid that by using smaller ranges, but that \
2482 would give less optimized code when SImode is \
2484 if (GET_MODE_SIZE (MODE) + offset - offset_base <= 64) \
2486 sum = gen_rtx (PLUS, Pmode, XEXP (X, 0), \
2487 GEN_INT (offset_base)); \
2488 X = gen_rtx (PLUS, Pmode, sum, GEN_INT (offset - offset_base));\
2489 push_reload (sum, NULL_RTX, &XEXP (X, 0), NULL, \
2490 BASE_REG_CLASS, Pmode, VOIDmode, 0, 0, (OPNUM), \
2495 /* We must re-recognize what we created before. */ \
2496 else if (GET_CODE (X) == PLUS \
2497 && (GET_MODE_SIZE (MODE) == 4 || GET_MODE_SIZE (MODE) == 8) \
2498 && GET_CODE (XEXP (X, 0)) == PLUS \
2499 && GET_CODE (XEXP (XEXP (X, 0), 1)) == CONST_INT \
2500 && BASE_REGISTER_RTX_P (XEXP (XEXP (X, 0), 0)) \
2501 && GET_CODE (XEXP (X, 1)) == CONST_INT \
2502 && ! TARGET_SHMEDIA \
2503 && ! (TARGET_SH3E && MODE == SFmode)) \
2505 /* Because this address is so complex, we know it must have \
2506 been created by LEGITIMIZE_RELOAD_ADDRESS before; thus, \
2507 it is already unshared, and needs no further unsharing. */ \
2508 push_reload (XEXP ((X), 0), NULL_RTX, &XEXP ((X), 0), NULL, \
2509 BASE_REG_CLASS, Pmode, VOIDmode, 0, 0, (OPNUM), (TYPE));\
2514 /* Go to LABEL if ADDR (a legitimate address expression)
2515 has an effect that depends on the machine mode it is used for.
2517 ??? Strictly speaking, we should also include all indexed addressing,
2518 because the index scale factor is the length of the operand.
2519 However, the impact of GO_IF_MODE_DEPENDENT_ADDRESS would be to
2520 high if we did that. So we rely on reload to fix things up. */
2522 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) \
2524 if (GET_CODE(ADDR) == PRE_DEC || GET_CODE(ADDR) == POST_INC) \
2528 /* Specify the machine mode that this machine uses
2529 for the index in the tablejump instruction. */
2530 #define CASE_VECTOR_MODE (TARGET_BIGTABLE ? SImode : HImode)
2532 #define CASE_VECTOR_SHORTEN_MODE(MIN_OFFSET, MAX_OFFSET, BODY) \
2533 ((MIN_OFFSET) >= 0 && (MAX_OFFSET) <= 127 \
2534 ? (ADDR_DIFF_VEC_FLAGS (BODY).offset_unsigned = 0, QImode) \
2535 : (MIN_OFFSET) >= 0 && (MAX_OFFSET) <= 255 \
2536 ? (ADDR_DIFF_VEC_FLAGS (BODY).offset_unsigned = 1, QImode) \
2537 : (MIN_OFFSET) >= -32768 && (MAX_OFFSET) <= 32767 ? HImode \
2540 /* Define as C expression which evaluates to nonzero if the tablejump
2541 instruction expects the table to contain offsets from the address of the
2543 Do not define this if the table should contain absolute addresses. */
2544 #define CASE_VECTOR_PC_RELATIVE 1
2546 /* Define it here, so that it doesn't get bumped to 64-bits on SHmedia. */
2547 #define FLOAT_TYPE_SIZE 32
2549 /* Since the SH3e has only `float' support, it is desirable to make all
2550 floating point types equivalent to `float'. */
2551 #define DOUBLE_TYPE_SIZE ((TARGET_SH3E && ! TARGET_SH4) ? 32 : 64)
2553 /* 'char' is signed by default. */
2554 #define DEFAULT_SIGNED_CHAR 1
2556 /* The type of size_t unsigned int. */
2557 #define SIZE_TYPE (TARGET_SH5 ? "long unsigned int" : "unsigned int")
2560 #define PTRDIFF_TYPE (TARGET_SH5 ? "long int" : "int")
2562 #define WCHAR_TYPE "short unsigned int"
2563 #define WCHAR_TYPE_SIZE 16
2565 #define SH_ELF_WCHAR_TYPE "long int"
2567 /* Don't cse the address of the function being compiled. */
2568 /*#define NO_RECURSIVE_FUNCTION_CSE 1*/
2570 /* Max number of bytes we can move from memory to memory
2571 in one reasonably fast instruction. */
2572 #define MOVE_MAX (TARGET_SHMEDIA ? 8 : 4)
2574 /* Maximum value possibly taken by MOVE_MAX. Must be defined whenever
2575 MOVE_MAX is not a compile-time constant. */
2576 #define MAX_MOVE_MAX 8
2578 /* Max number of bytes we want move_by_pieces to be able to copy
2580 #define MOVE_MAX_PIECES (TARGET_SH4 || TARGET_SHMEDIA ? 8 : 4)
2582 /* Define if operations between registers always perform the operation
2583 on the full register even if a narrower mode is specified. */
2584 #define WORD_REGISTER_OPERATIONS
2586 /* Define if loading in MODE, an integral mode narrower than BITS_PER_WORD
2587 will either zero-extend or sign-extend. The value of this macro should
2588 be the code that says which one of the two operations is implicitly
2589 done, NIL if none. */
2590 #define LOAD_EXTEND_OP(MODE) SIGN_EXTEND
2592 /* Define if loading short immediate values into registers sign extends. */
2593 #define SHORT_IMMEDIATES_SIGN_EXTEND
2595 /* Nonzero if access to memory by bytes is no faster than for words. */
2596 #define SLOW_BYTE_ACCESS 1
2598 /* We assume that the store-condition-codes instructions store 0 for false
2599 and some other value for true. This is the value stored for true. */
2601 #define STORE_FLAG_VALUE 1
2603 /* Immediate shift counts are truncated by the output routines (or was it
2604 the assembler?). Shift counts in a register are truncated by SH. Note
2605 that the native compiler puts too large (> 32) immediate shift counts
2606 into a register and shifts by the register, letting the SH decide what
2607 to do instead of doing that itself. */
2608 /* ??? The library routines in lib1funcs.asm truncate the shift count.
2609 However, the SH3 has hardware shifts that do not truncate exactly as gcc
2610 expects - the sign bit is significant - so it appears that we need to
2611 leave this zero for correct SH3 code. */
2612 #define SHIFT_COUNT_TRUNCATED (! TARGET_SH3)
2614 /* All integers have the same format so truncation is easy. */
2615 #define TRULY_NOOP_TRUNCATION(OUTPREC,INPREC) 1
2617 /* Define this if addresses of constant functions
2618 shouldn't be put through pseudo regs where they can be cse'd.
2619 Desirable on machines where ordinary constants are expensive
2620 but a CALL with constant address is cheap. */
2621 /*#define NO_FUNCTION_CSE 1*/
2623 /* Chars and shorts should be passed as ints. */
2624 #define PROMOTE_PROTOTYPES 1
2626 /* The machine modes of pointers and functions. */
2627 #define Pmode (TARGET_SHMEDIA64 ? DImode : SImode)
2628 #define FUNCTION_MODE Pmode
2630 /* The relative costs of various types of constants. */
2632 #define CONST_COSTS(RTX, CODE, OUTER_CODE) \
2634 if (TARGET_SHMEDIA) \
2636 if (CONST_OK_FOR_J (INTVAL (RTX))) \
2637 return COSTS_N_INSNS (1); \
2638 else if (CONST_OK_FOR_J (INTVAL (RTX) >> 16)) \
2639 return COSTS_N_INSNS (2); \
2640 else if (CONST_OK_FOR_J ((INTVAL (RTX) >> 16) >> 16)) \
2641 return COSTS_N_INSNS (3); \
2643 return COSTS_N_INSNS (4); \
2645 if (CONST_OK_FOR_I (INTVAL (RTX))) \
2647 else if (((OUTER_CODE) == AND || (OUTER_CODE) == IOR || (OUTER_CODE) == XOR) \
2648 && CONST_OK_FOR_L (INTVAL (RTX))) \
2655 if (TARGET_SHMEDIA64) \
2656 return COSTS_N_INSNS (4); \
2657 if (TARGET_SHMEDIA32) \
2658 return COSTS_N_INSNS (2); \
2660 case CONST_DOUBLE: \
2661 if (TARGET_SHMEDIA) \
2662 return COSTS_N_INSNS (4); \
2666 #define RTX_COSTS(X, CODE, OUTER_CODE) \
2668 return COSTS_N_INSNS (addsubcosts (X)); \
2670 return COSTS_N_INSNS (andcosts (X)); \
2672 return COSTS_N_INSNS (multcosts (X)); \
2676 return COSTS_N_INSNS (shiftcosts (X)); \
2681 return COSTS_N_INSNS (20); \
2686 /* The multiply insn on the SH1 and the divide insns on the SH1 and SH2
2687 are actually function calls with some special constraints on arguments
2690 These macros tell reorg that the references to arguments and
2691 register clobbers for insns of type sfunc do not appear to happen
2692 until after the millicode call. This allows reorg to put insns
2693 which set the argument registers into the delay slot of the millicode
2694 call -- thus they act more like traditional CALL_INSNs.
2696 get_attr_is_sfunc will try to recognize the given insn, so make sure to
2697 filter out things it will not accept -- SEQUENCE, USE and CLOBBER insns
2700 #define INSN_SETS_ARE_DELAYED(X) \
2701 ((GET_CODE (X) == INSN \
2702 && GET_CODE (PATTERN (X)) != SEQUENCE \
2703 && GET_CODE (PATTERN (X)) != USE \
2704 && GET_CODE (PATTERN (X)) != CLOBBER \
2705 && get_attr_is_sfunc (X)))
2707 #define INSN_REFERENCES_ARE_DELAYED(X) \
2708 ((GET_CODE (X) == INSN \
2709 && GET_CODE (PATTERN (X)) != SEQUENCE \
2710 && GET_CODE (PATTERN (X)) != USE \
2711 && GET_CODE (PATTERN (X)) != CLOBBER \
2712 && get_attr_is_sfunc (X)))
2715 /* Position Independent Code. */
2717 /* The prefix used to mark SYMBOL_REFs that refer to data symbols. */
2718 #define SH_DATALABEL_ENCODING "#"
2720 /* Return true if SYM_NAME starts with SH_DATALABEL_ENCODING. */
2721 #define DATALABEL_SYMNAME_P(SYM_NAME) \
2722 (SH_DATALABEL_ENCODING[1] ? (abort (), 0) : \
2723 (SYM_NAME)[0] == SH_DATALABEL_ENCODING[0])
2725 /* Skip an optional SH_DATALABEL_ENCODING in the beginning of
2726 SYM_NAME. Then, remove a leading *, like the default definition in
2728 #define STRIP_DATALABEL_ENCODING(VAR, SYM_NAME) \
2729 (VAR) = (SYM_NAME) + (DATALABEL_SYMNAME_P (SYM_NAME) \
2730 ? strlen (SH_DATALABEL_ENCODING) : 0)
2732 /* We can't directly access anything that contains a symbol,
2733 nor can we indirect via the constant pool. */
2734 #define LEGITIMATE_PIC_OPERAND_P(X) \
2735 (! nonpic_symbol_mentioned_p (X) \
2736 && (GET_CODE (X) != SYMBOL_REF \
2737 || ! CONSTANT_POOL_ADDRESS_P (X) \
2738 || ! nonpic_symbol_mentioned_p (get_pool_constant (X))))
2740 #define SYMBOLIC_CONST_P(X) \
2741 ((GET_CODE (X) == SYMBOL_REF || GET_CODE (X) == LABEL_REF) \
2742 && nonpic_symbol_mentioned_p (X))
2744 /* Compute the cost of an address. For the SH, all valid addresses are
2745 the same cost. Use a slightly higher cost for reg + reg addressing,
2746 since it increases pressure on r0. */
2748 #define ADDRESS_COST(X) (GET_CODE (X) == PLUS && ! CONSTANT_P (XEXP (X, 1)) \
2749 && ! TARGET_SHMEDIA \
2752 /* Compute extra cost of moving data between one register class
2755 /* Regclass always uses 2 for moves in the same register class;
2756 If SECONDARY*_RELOAD_CLASS says something about the src/dst pair,
2757 it uses this information. Hence, the general register <-> floating point
2758 register information here is not used for SFmode. */
2759 #define REGISTER_MOVE_COST(MODE, SRCCLASS, DSTCLASS) \
2760 (((((DSTCLASS) == T_REGS) || ((DSTCLASS) == PR_REGS)) ? 10 \
2761 : ((((DSTCLASS) == FP0_REGS || (DSTCLASS) == FP_REGS || (DSTCLASS) == DF_REGS) \
2762 && ((SRCCLASS) == GENERAL_REGS || (SRCCLASS) == R0_REGS)) \
2763 || (((DSTCLASS) == GENERAL_REGS || (DSTCLASS) == R0_REGS) \
2764 && ((SRCCLASS) == FP0_REGS || (SRCCLASS) == FP_REGS \
2765 || (SRCCLASS) == DF_REGS))) \
2766 ? (TARGET_SHMEDIA ? 2 \
2767 : TARGET_FMOVD ? 8 : 12) \
2768 : (((DSTCLASS) == FPUL_REGS \
2769 && ((SRCCLASS) == GENERAL_REGS || (SRCCLASS) == R0_REGS)) \
2770 || (SRCCLASS == FPUL_REGS \
2771 && ((DSTCLASS) == GENERAL_REGS || (DSTCLASS) == R0_REGS))) \
2773 : (((DSTCLASS) == FPUL_REGS \
2774 && ((SRCCLASS) == PR_REGS || (SRCCLASS) == MAC_REGS \
2775 || (SRCCLASS) == T_REGS)) \
2776 || ((SRCCLASS) == FPUL_REGS \
2777 && ((DSTCLASS) == PR_REGS || (DSTCLASS) == MAC_REGS))) \
2779 : (((SRCCLASS) == TARGET_REGS && (DSTCLASS) != GENERAL_REGS) \
2780 || ((DSTCLASS) == TARGET_REGS && (SRCCLASS) != GENERAL_REGS)) \
2782 : (((SRCCLASS) == FPSCR_REGS && (DSTCLASS) != GENERAL_REGS) \
2783 || ((DSTCLASS) == FPSCR_REGS && (SRCCLASS) != GENERAL_REGS)) \
2785 : 2) * ((MODE) == V16SFmode ? 8 : (MODE) == V4SFmode ? 2 : 1))
2787 /* ??? Perhaps make MEMORY_MOVE_COST depend on compiler option? This
2788 would be so that people with slow memory systems could generate
2789 different code that does fewer memory accesses. */
2791 /* A C expression for the cost of a branch instruction. A value of 1
2792 is the default; other values are interpreted relative to that.
2793 The SH1 does not have delay slots, hence we get a pipeline stall
2794 at every branch. The SH4 is superscalar, so the single delay slot
2795 is not sufficient to keep both pipelines filled. */
2796 #define BRANCH_COST (TARGET_SH5 ? 1 : ! TARGET_SH2 || TARGET_HARD_SH4 ? 2 : 1)
2798 /* Assembler output control. */
2800 /* A C string constant describing how to begin a comment in the target
2801 assembler language. The compiler assumes that the comment will end at
2802 the end of the line. */
2803 #define ASM_COMMENT_START "!"
2805 /* The text to go at the start of the assembler file. */
2806 #define ASM_FILE_START(STREAM) \
2807 output_file_start (STREAM)
2809 #define ASM_APP_ON ""
2810 #define ASM_APP_OFF ""
2811 #define FILE_ASM_OP "\t.file\n"
2812 #define SET_ASM_OP "\t.set\t"
2814 /* How to change between sections. */
2816 #define TEXT_SECTION_ASM_OP (TARGET_SHMEDIA32 ? "\t.section\t.text..SHmedia32,\"ax\"" : "\t.text")
2817 #define DATA_SECTION_ASM_OP "\t.data"
2819 #if defined CRT_BEGIN || defined CRT_END
2820 /* Arrange for TEXT_SECTION_ASM_OP to be a compile-time constant. */
2821 # undef TEXT_SECTION_ASM_OP
2822 # if __SHMEDIA__ == 1 && __SH5__ == 32
2823 # define TEXT_SECTION_ASM_OP "\t.section\t.text..SHmedia32,\"ax\""
2825 # define TEXT_SECTION_ASM_OP "\t.text"
2830 /* If defined, a C expression whose value is a string containing the
2831 assembler operation to identify the following data as
2832 uninitialized global data. If not defined, and neither
2833 `ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined,
2834 uninitialized global data will be output in the data section if
2835 `-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be
2837 #ifndef BSS_SECTION_ASM_OP
2838 #define BSS_SECTION_ASM_OP "\t.section\t.bss"
2841 /* Like `ASM_OUTPUT_BSS' except takes the required alignment as a
2842 separate, explicit argument. If you define this macro, it is used
2843 in place of `ASM_OUTPUT_BSS', and gives you more flexibility in
2844 handling the required alignment of the variable. The alignment is
2845 specified as the number of bits.
2847 Try to use function `asm_output_aligned_bss' defined in file
2848 `varasm.c' when defining this macro. */
2849 #ifndef ASM_OUTPUT_ALIGNED_BSS
2850 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
2851 asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
2854 /* Define this so that jump tables go in same section as the current function,
2855 which could be text or it could be a user defined section. */
2856 #define JUMP_TABLES_IN_TEXT_SECTION 1
2858 #undef DO_GLOBAL_CTORS_BODY
2859 #define DO_GLOBAL_CTORS_BODY \
2861 typedef (*pfunc)(); \
2862 extern pfunc __ctors[]; \
2863 extern pfunc __ctors_end[]; \
2865 for (p = __ctors_end; p > __ctors; ) \
2871 #undef DO_GLOBAL_DTORS_BODY
2872 #define DO_GLOBAL_DTORS_BODY \
2874 typedef (*pfunc)(); \
2875 extern pfunc __dtors[]; \
2876 extern pfunc __dtors_end[]; \
2878 for (p = __dtors; p < __dtors_end; p++) \
2884 #define ASM_OUTPUT_REG_PUSH(file, v) \
2885 fprintf ((file), "\tmov.l\tr%d,@-r15\n", (v));
2887 #define ASM_OUTPUT_REG_POP(file, v) \
2888 fprintf ((file), "\tmov.l\t@r15+,r%d\n", (v));
2890 /* DBX register number for a given compiler register number. */
2891 /* GDB has FPUL at 23 and FP0 at 25, so we must add one to all FP registers
2893 /* svr4.h undefines this macro, yet we really want to use the same numbers
2894 for coff as for elf, so we go via another macro: SH_DBX_REGISTER_NUMBER. */
2895 #define DBX_REGISTER_NUMBER(REGNO) SH_DBX_REGISTER_NUMBER (REGNO)
2897 #define SH_DBX_REGISTER_NUMBER(REGNO) \
2898 (GENERAL_REGISTER_P (REGNO) \
2899 ? ((REGNO) - FIRST_GENERAL_REG) \
2900 : FP_REGISTER_P (REGNO) \
2901 ? ((REGNO) - FIRST_FP_REG + (TARGET_SH5 ? (TARGET_SHCOMPACT ? 245 \
2903 : XD_REGISTER_P (REGNO) \
2904 ? ((REGNO) - FIRST_XD_REG + (TARGET_SH5 ? 289 : 87)) \
2905 : TARGET_REGISTER_P (REGNO) \
2906 ? ((REGNO) - FIRST_TARGET_REG + 68) \
2907 : (REGNO) == PR_REG \
2908 ? (TARGET_SH5 ? 241 : 17) \
2909 : (REGNO) == T_REG \
2910 ? (TARGET_SH5 ? 242 : 18) \
2911 : (REGNO) == GBR_REG \
2912 ? (TARGET_SH5 ? 238 : 19) \
2913 : (REGNO) == MACH_REG \
2914 ? (TARGET_SH5 ? 239 : 20) \
2915 : (REGNO) == MACL_REG \
2916 ? (TARGET_SH5 ? 240 : 21) \
2917 : (REGNO) == FPUL_REG \
2918 ? (TARGET_SH5 ? 244 : 23) \
2921 /* This is how to output a reference to a user-level label named NAME. */
2922 #define ASM_OUTPUT_LABELREF(FILE, NAME) \
2927 STRIP_DATALABEL_ENCODING (lname, (NAME)); \
2928 if (lname[0] == '*') \
2929 fputs (lname + 1, (FILE)); \
2931 asm_fprintf ((FILE), "%U%s", lname); \
2935 /* This is how to output a reference to a symbol_ref. On SH5,
2936 references to non-code symbols must be preceded by `datalabel'. */
2937 #define ASM_OUTPUT_SYMBOL_REF(FILE,SYM) \
2941 && (DATALABEL_SYMNAME_P (XSTR ((SYM), 0)) \
2942 || CONSTANT_POOL_ADDRESS_P (SYM))) \
2943 fputs ("datalabel ", (FILE)); \
2944 assemble_name ((FILE), XSTR ((SYM), 0)); \
2948 /* Output a label definition. */
2949 #define ASM_OUTPUT_LABEL(FILE,NAME) \
2950 do { assemble_name ((FILE), (NAME)); fputs (":\n", (FILE)); } while (0)
2952 /* This is how to output an assembler line
2953 that says to advance the location counter
2954 to a multiple of 2**LOG bytes. */
2956 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
2958 fprintf ((FILE), "\t.align %d\n", (LOG))
2960 /* Output a globalising directive for a label. */
2961 #define ASM_GLOBALIZE_LABEL(STREAM,NAME) \
2962 (fprintf ((STREAM), "\t.global\t"), \
2963 assemble_name ((STREAM), (NAME)), \
2964 fputc ('\n', (STREAM)))
2966 /* #define ASM_OUTPUT_CASE_END(STREAM,NUM,TABLE) */
2968 /* Construct a private name. */
2969 #define ASM_FORMAT_PRIVATE_NAME(OUTVAR,NAME,NUMBER) \
2970 ((OUTVAR) = (char *) alloca (strlen (NAME) + 10), \
2971 sprintf ((OUTVAR), "%s.%d", (NAME), (NUMBER)))
2973 /* Output a relative address table. */
2975 #define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM,BODY,VALUE,REL) \
2976 switch (GET_MODE (BODY)) \
2981 asm_fprintf ((STREAM), "\t.long\t%LL%d-datalabel %LL%d\n", \
2985 asm_fprintf ((STREAM), "\t.long\t%LL%d-%LL%d\n", (VALUE),(REL)); \
2990 asm_fprintf ((STREAM), "\t.word\t%LL%d-datalabel %LL%d\n", \
2994 asm_fprintf ((STREAM), "\t.word\t%LL%d-%LL%d\n", (VALUE),(REL)); \
2999 asm_fprintf ((STREAM), "\t.byte\t%LL%d-datalabel %LL%d\n", \
3003 asm_fprintf ((STREAM), "\t.byte\t%LL%d-%LL%d\n", (VALUE),(REL)); \
3009 /* Output an absolute table element. */
3011 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM,VALUE) \
3012 if (TARGET_BIGTABLE) \
3013 asm_fprintf ((STREAM), "\t.long\t%LL%d\n", (VALUE)); \
3015 asm_fprintf ((STREAM), "\t.word\t%LL%d\n", (VALUE));
3018 /* A C statement to be executed just prior to the output of
3019 assembler code for INSN, to modify the extracted operands so
3020 they will be output differently.
3022 Here the argument OPVEC is the vector containing the operands
3023 extracted from INSN, and NOPERANDS is the number of elements of
3024 the vector which contain meaningful data for this insn.
3025 The contents of this vector are what will be used to convert the insn
3026 template into assembler code, so you can change the assembler output
3027 by changing the contents of the vector. */
3029 #define FINAL_PRESCAN_INSN(INSN, OPVEC, NOPERANDS) \
3030 final_prescan_insn ((INSN), (OPVEC), (NOPERANDS))
3032 /* Print operand X (an rtx) in assembler syntax to file FILE.
3033 CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified.
3034 For `%' followed by punctuation, CODE is the punctuation and X is null. */
3036 #define PRINT_OPERAND(STREAM, X, CODE) print_operand ((STREAM), (X), (CODE))
3038 /* Print a memory address as an operand to reference that memory location. */
3040 #define PRINT_OPERAND_ADDRESS(STREAM,X) print_operand_address ((STREAM), (X))
3042 #define PRINT_OPERAND_PUNCT_VALID_P(CHAR) \
3043 ((CHAR) == '.' || (CHAR) == '#' || (CHAR) == '@' || (CHAR) == ',' \
3046 /* Recognize machine-specific patterns that may appear within
3047 constants. Used for PIC-specific UNSPECs. */
3048 #define OUTPUT_ADDR_CONST_EXTRA(STREAM, X, FAIL) \
3050 if (GET_CODE (X) == UNSPEC && XVECLEN ((X), 0) == 1) \
3052 switch (XINT ((X), 1)) \
3054 case UNSPEC_DATALABEL: \
3055 fputs ("datalabel ", (STREAM)); \
3056 output_addr_const ((STREAM), XVECEXP ((X), 0, 0)); \
3059 /* GLOBAL_OFFSET_TABLE or local symbols, no suffix. */ \
3060 output_addr_const ((STREAM), XVECEXP ((X), 0, 0)); \
3063 output_addr_const ((STREAM), XVECEXP ((X), 0, 0)); \
3064 fputs ("@GOT", (STREAM)); \
3066 case UNSPEC_GOTOFF: \
3067 output_addr_const ((STREAM), XVECEXP ((X), 0, 0)); \
3068 fputs ("@GOTOFF", (STREAM)); \
3071 output_addr_const ((STREAM), XVECEXP ((X), 0, 0)); \
3072 fputs ("@PLT", (STREAM)); \
3074 case UNSPEC_GOTPLT: \
3075 output_addr_const ((STREAM), XVECEXP ((X), 0, 0)); \
3076 fputs ("@GOTPLT", (STREAM)); \
3078 case UNSPEC_CALLER: \
3081 /* LPCS stands for Label for PIC Call Site. */ \
3082 ASM_GENERATE_INTERNAL_LABEL \
3083 (name, "LPCS", INTVAL (XVECEXP ((X), 0, 0))); \
3084 assemble_name ((STREAM), name); \
3097 extern struct rtx_def *sh_compare_op0;
3098 extern struct rtx_def *sh_compare_op1;
3100 /* Which processor to schedule for. The elements of the enumeration must
3101 match exactly the cpu attribute in the sh.md file. */
3103 enum processor_type {
3112 #define sh_cpu_attr ((enum attr_cpu)sh_cpu)
3113 extern enum processor_type sh_cpu;
3115 extern int optimize; /* needed for gen_casesi. */
3117 enum mdep_reorg_phase_e
3119 SH_BEFORE_MDEP_REORG,
3120 SH_INSERT_USES_LABELS,
3121 SH_SHORTEN_BRANCHES0,
3123 SH_SHORTEN_BRANCHES1,
3127 extern enum mdep_reorg_phase_e mdep_reorg_phase;
3129 #define MACHINE_DEPENDENT_REORG(X) machine_dependent_reorg(X)
3131 /* Generate calls to memcpy, memcmp and memset. */
3133 #define TARGET_MEM_FUNCTIONS
3135 /* Handle Hitachi compiler's pragmas. */
3136 #define REGISTER_TARGET_PRAGMAS(PFILE) do { \
3137 cpp_register_pragma (PFILE, 0, "interrupt", sh_pr_interrupt); \
3138 cpp_register_pragma (PFILE, 0, "trapa", sh_pr_trapa); \
3139 cpp_register_pragma (PFILE, 0, "nosave_low_regs", sh_pr_nosave_low_regs); \
3142 /* Set when processing a function with pragma interrupt turned on. */
3144 extern int pragma_interrupt;
3146 /* Set when processing a function with interrupt attribute. */
3148 extern int current_function_interrupt;
3150 /* Set to an RTX containing the address of the stack to switch to
3151 for interrupt functions. */
3152 extern struct rtx_def *sp_switch;
3154 extern int rtx_equal_function_value_matters;
3155 extern struct rtx_def *fpscr_rtx;
3158 /* Instructions with unfilled delay slots take up an
3159 extra two bytes for the nop in the delay slot.
3160 sh-dsp parallel processing insns are four bytes long. */
3162 #define ADJUST_INSN_LENGTH(X, LENGTH) \
3163 (LENGTH) += sh_insn_length_adjustment (X);
3165 /* Define the codes that are matched by predicates in sh.c. */
3166 #define PREDICATE_CODES \
3167 {"arith_operand", {SUBREG, REG, CONST_INT}}, \
3168 {"arith_reg_operand", {SUBREG, REG}}, \
3169 {"arith_reg_or_0_operand", {SUBREG, REG, CONST_INT}}, \
3170 {"binary_float_operator", {PLUS, MULT}}, \
3171 {"commutative_float_operator", {PLUS, MULT}}, \
3172 {"fp_arith_reg_operand", {SUBREG, REG}}, \
3173 {"fpscr_operand", {REG}}, \
3174 {"fpul_operand", {REG}}, \
3175 {"general_movsrc_operand", {SUBREG, REG, CONST_INT, CONST_DOUBLE, MEM}}, \
3176 {"general_movdst_operand", {SUBREG, REG, MEM}}, \
3177 {"logical_operand", {SUBREG, REG, CONST_INT}}, \
3178 {"noncommutative_float_operator", {MINUS, DIV}}, \
3179 {"shmedia_6bit_operand", {SUBREG, REG, CONST_INT}}, \
3180 {"target_reg_operand", {SUBREG, REG}}, \
3181 {"target_operand", {SUBREG, REG, LABEL_REF, SYMBOL_REF}}, \
3182 {"register_operand", {SUBREG, REG}}, \
3183 {"symbol_ref_operand", {SYMBOL_REF}},
3185 /* Define this macro if it is advisable to hold scalars in registers
3186 in a wider mode than that declared by the program. In such cases,
3187 the value is constrained to be within the bounds of the declared
3188 type, but kept valid in the wider mode. The signedness of the
3189 extension may differ from that of the type.
3191 Leaving the unsignedp unchanged gives better code than always setting it
3192 to 0. This is despite the fact that we have only signed char and short
3193 load instructions. */
3194 #define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \
3195 if (GET_MODE_CLASS (MODE) == MODE_INT \
3196 && GET_MODE_SIZE (MODE) < UNITS_PER_WORD) \
3197 (UNSIGNEDP) = ((MODE) == SImode ? 0 : (UNSIGNEDP)), \
3198 (MODE) = (TARGET_SH1 ? SImode : DImode);
3200 /* Defining PROMOTE_FUNCTION_ARGS eliminates some unnecessary zero/sign
3201 extensions applied to char/short functions arguments. Defining
3202 PROMOTE_FUNCTION_RETURN does the same for function returns. */
3204 #define PROMOTE_FUNCTION_ARGS
3205 #define PROMOTE_FUNCTION_RETURN
3207 /* ??? Define ACCUMULATE_OUTGOING_ARGS? This is more efficient than pushing
3208 and poping arguments. However, we do have push/pop instructions, and
3209 rather limited offsets (4 bits) in load/store instructions, so it isn't
3210 clear if this would give better code. If implemented, should check for
3211 compatibility problems. */
3213 #define SH_DYNAMIC_SHIFT_COST \
3214 (TARGET_HARD_SH4 ? 1 : TARGET_SH3 ? (TARGET_SMALLCODE ? 1 : 2) : 20)
3217 #define NUM_MODES_FOR_MODE_SWITCHING { FP_MODE_NONE }
3219 #define OPTIMIZE_MODE_SWITCHING(ENTITY) TARGET_SH4
3221 #define NORMAL_MODE(ENTITY) \
3222 (TARGET_FPU_SINGLE ? FP_MODE_SINGLE : FP_MODE_DOUBLE)
3224 #define EPILOGUE_USES(REGNO) ((TARGET_SH3E || TARGET_SH4) \
3225 && (REGNO) == FPSCR_REG)
3227 #define MODE_NEEDED(ENTITY, INSN) \
3228 (recog_memoized (INSN) >= 0 \
3229 ? get_attr_fp_mode (INSN) \
3232 #define MODE_PRIORITY_TO_MODE(ENTITY, N) \
3233 ((TARGET_FPU_SINGLE != 0) ^ (N) ? FP_MODE_SINGLE : FP_MODE_DOUBLE)
3235 #define EMIT_MODE_SET(ENTITY, MODE, HARD_REGS_LIVE) \
3236 fpscr_set_from_mem ((MODE), (HARD_REGS_LIVE))
3238 #define MD_CAN_REDIRECT_BRANCH(INSN, SEQ) \
3239 sh_can_redirect_branch ((INSN), (SEQ))
3241 #define DWARF_FRAME_RETURN_COLUMN (TARGET_SH5 ? PR_MEDIA_REG : PR_REG)
3243 #if (defined CRT_BEGIN || defined CRT_END) && ! __SHMEDIA__
3244 /* SH constant pool breaks the devices in crtstuff.c to control section
3245 in where code resides. We have to write it as asm code. */
3246 #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
3247 asm (SECTION_OP "\n\
3253 1: .long " USER_LABEL_PREFIX #FUNC " - 0b\n\
3254 2:\n" TEXT_SECTION_ASM_OP);
3255 #endif /* (defined CRT_BEGIN || defined CRT_END) && ! __SHMEDIA__ */
3257 #define ALLOCATE_INITIAL_VALUE(hard_reg) \
3258 (REGNO (hard_reg) == (TARGET_SH5 ? PR_MEDIA_REG : PR_REG) \
3259 ? (current_function_is_leaf && ! sh_pr_n_sets () \
3261 : gen_rtx_MEM (Pmode, TARGET_SH5 \
3262 ? (plus_constant (arg_pointer_rtx, \
3263 TARGET_SHMEDIA64 ? -8 : -4)) \
3264 : frame_pointer_rtx)) \
3267 #endif /* ! GCC_SH_H */
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