1 /* Definitions of target machine for GNU compiler, for Sun SPARC.
2 Copyright (C) 1987, 1988, 1989, 1992, 1994, 1995, 1996, 1997, 1998, 1999
3 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
4 Contributed by Michael Tiemann (tiemann@cygnus.com).
5 64 bit SPARC V9 support by Michael Tiemann, Jim Wilson, and Doug Evans,
8 This file is part of GNU CC.
10 GNU CC is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2, or (at your option)
15 GNU CC is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with GNU CC; see the file COPYING. If not, write to
22 the Free Software Foundation, 59 Temple Place - Suite 330,
23 Boston, MA 02111-1307, USA. */
25 /* Note that some other tm.h files include this one and then override
26 whatever definitions are necessary. */
28 /* Target CPU builtins. */
29 #define TARGET_CPU_CPP_BUILTINS() \
32 builtin_define ("__sparc__"); \
35 builtin_assert ("cpu=sparc"); \
36 builtin_assert ("machine=sparc"); \
40 builtin_assert ("cpu=sparc64"); \
41 builtin_assert ("machine=sparc64"); \
46 /* Specify this in a cover file to provide bi-architecture (32/64) support. */
47 /* #define SPARC_BI_ARCH */
49 /* Macro used later in this file to determine default architecture. */
50 #define DEFAULT_ARCH32_P ((TARGET_DEFAULT & MASK_64BIT) == 0)
52 /* TARGET_ARCH{32,64} are the main macros to decide which of the two
53 architectures to compile for. We allow targets to choose compile time or
56 #if defined(__sparcv9) || defined(__arch64__)
57 #define TARGET_ARCH32 0
59 #define TARGET_ARCH32 1
63 #define TARGET_ARCH32 (! TARGET_64BIT)
65 #define TARGET_ARCH32 (DEFAULT_ARCH32_P)
66 #endif /* SPARC_BI_ARCH */
67 #endif /* IN_LIBGCC2 */
68 #define TARGET_ARCH64 (! TARGET_ARCH32)
70 /* Code model selection.
71 -mcmodel is used to select the v9 code model.
72 Different code models aren't supported for v7/8 code.
74 TARGET_CM_32: 32 bit address space, top 32 bits = 0,
75 pointers are 32 bits. Note that this isn't intended
78 TARGET_CM_MEDLOW: 32 bit address space, top 32 bits = 0,
79 avoid generating %uhi and %ulo terms,
82 TARGET_CM_MEDMID: 64 bit address space.
83 The executable must be in the low 16 TB of memory.
84 This corresponds to the low 44 bits, and the %[hml]44
85 relocs are used. The text segment has a maximum size
88 TARGET_CM_MEDANY: 64 bit address space.
89 The text and data segments have a maximum size of 31
90 bits and may be located anywhere. The maximum offset
91 from any instruction to the label _GLOBAL_OFFSET_TABLE_
94 TARGET_CM_EMBMEDANY: 64 bit address space.
95 The text and data segments have a maximum size of 31 bits
96 and may be located anywhere. Register %g4 contains
97 the start address of the data segment.
108 /* Value of -mcmodel specified by user. */
109 extern const char *sparc_cmodel_string;
111 extern enum cmodel sparc_cmodel;
113 /* V9 code model selection. */
114 #define TARGET_CM_MEDLOW (sparc_cmodel == CM_MEDLOW)
115 #define TARGET_CM_MEDMID (sparc_cmodel == CM_MEDMID)
116 #define TARGET_CM_MEDANY (sparc_cmodel == CM_MEDANY)
117 #define TARGET_CM_EMBMEDANY (sparc_cmodel == CM_EMBMEDANY)
119 #define SPARC_DEFAULT_CMODEL CM_32
121 /* This is call-clobbered in the normal ABI, but is reserved in the
122 home grown (aka upward compatible) embedded ABI. */
123 #define EMBMEDANY_BASE_REG "%g4"
125 /* Values of TARGET_CPU_DEFAULT, set via -D in the Makefile,
126 and specified by the user via --with-cpu=foo.
127 This specifies the cpu implementation, not the architecture size. */
128 /* Note that TARGET_CPU_v9 is assumed to start the list of 64-bit
130 #define TARGET_CPU_sparc 0
131 #define TARGET_CPU_v7 0 /* alias for previous */
132 #define TARGET_CPU_sparclet 1
133 #define TARGET_CPU_sparclite 2
134 #define TARGET_CPU_v8 3 /* generic v8 implementation */
135 #define TARGET_CPU_supersparc 4
136 #define TARGET_CPU_hypersparc 5
137 #define TARGET_CPU_sparc86x 6
138 #define TARGET_CPU_sparclite86x 6
139 #define TARGET_CPU_v9 7 /* generic v9 implementation */
140 #define TARGET_CPU_sparcv9 7 /* alias */
141 #define TARGET_CPU_sparc64 7 /* alias */
142 #define TARGET_CPU_ultrasparc 8
143 #define TARGET_CPU_ultrasparc3 9
145 #if TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
146 || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc \
147 || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc3
149 #define CPP_CPU32_DEFAULT_SPEC ""
150 #define ASM_CPU32_DEFAULT_SPEC ""
152 #if TARGET_CPU_DEFAULT == TARGET_CPU_v9
153 /* ??? What does Sun's CC pass? */
154 #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__"
155 /* ??? It's not clear how other assemblers will handle this, so by default
156 use GAS. Sun's Solaris assembler recognizes -xarch=v8plus, but this case
157 is handled in sol2.h. */
158 #define ASM_CPU64_DEFAULT_SPEC "-Av9"
160 #if TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc
161 #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__"
162 #define ASM_CPU64_DEFAULT_SPEC "-Av9a"
164 #if TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc3
165 #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__"
166 #define ASM_CPU64_DEFAULT_SPEC "-Av9b"
171 #define CPP_CPU64_DEFAULT_SPEC ""
172 #define ASM_CPU64_DEFAULT_SPEC ""
174 #if TARGET_CPU_DEFAULT == TARGET_CPU_sparc \
175 || TARGET_CPU_DEFAULT == TARGET_CPU_v8
176 #define CPP_CPU32_DEFAULT_SPEC ""
177 #define ASM_CPU32_DEFAULT_SPEC ""
180 #if TARGET_CPU_DEFAULT == TARGET_CPU_sparclet
181 #define CPP_CPU32_DEFAULT_SPEC "-D__sparclet__"
182 #define ASM_CPU32_DEFAULT_SPEC "-Asparclet"
185 #if TARGET_CPU_DEFAULT == TARGET_CPU_sparclite
186 #define CPP_CPU32_DEFAULT_SPEC "-D__sparclite__"
187 #define ASM_CPU32_DEFAULT_SPEC "-Asparclite"
190 #if TARGET_CPU_DEFAULT == TARGET_CPU_supersparc
191 #define CPP_CPU32_DEFAULT_SPEC "-D__supersparc__ -D__sparc_v8__"
192 #define ASM_CPU32_DEFAULT_SPEC ""
195 #if TARGET_CPU_DEFAULT == TARGET_CPU_hypersparc
196 #define CPP_CPU32_DEFAULT_SPEC "-D__hypersparc__ -D__sparc_v8__"
197 #define ASM_CPU32_DEFAULT_SPEC ""
200 #if TARGET_CPU_DEFAULT == TARGET_CPU_sparclite86x
201 #define CPP_CPU32_DEFAULT_SPEC "-D__sparclite86x__"
202 #define ASM_CPU32_DEFAULT_SPEC "-Asparclite"
207 #if !defined(CPP_CPU32_DEFAULT_SPEC) || !defined(CPP_CPU64_DEFAULT_SPEC)
208 #error Unrecognized value in TARGET_CPU_DEFAULT.
213 #define CPP_CPU_DEFAULT_SPEC \
214 (DEFAULT_ARCH32_P ? "\
215 %{m64:" CPP_CPU64_DEFAULT_SPEC "} \
216 %{!m64:" CPP_CPU32_DEFAULT_SPEC "} \
218 %{m32:" CPP_CPU32_DEFAULT_SPEC "} \
219 %{!m32:" CPP_CPU64_DEFAULT_SPEC "} \
221 #define ASM_CPU_DEFAULT_SPEC \
222 (DEFAULT_ARCH32_P ? "\
223 %{m64:" ASM_CPU64_DEFAULT_SPEC "} \
224 %{!m64:" ASM_CPU32_DEFAULT_SPEC "} \
226 %{m32:" ASM_CPU32_DEFAULT_SPEC "} \
227 %{!m32:" ASM_CPU64_DEFAULT_SPEC "} \
230 #else /* !SPARC_BI_ARCH */
232 #define CPP_CPU_DEFAULT_SPEC (DEFAULT_ARCH32_P ? CPP_CPU32_DEFAULT_SPEC : CPP_CPU64_DEFAULT_SPEC)
233 #define ASM_CPU_DEFAULT_SPEC (DEFAULT_ARCH32_P ? ASM_CPU32_DEFAULT_SPEC : ASM_CPU64_DEFAULT_SPEC)
235 #endif /* !SPARC_BI_ARCH */
237 /* Define macros to distinguish architectures. */
239 /* Common CPP definitions used by CPP_SPEC amongst the various targets
240 for handling -mcpu=xxx switches. */
241 #define CPP_CPU_SPEC "\
242 %{msoft-float:-D_SOFT_FLOAT} \
244 %{msparclite:-D__sparclite__} \
245 %{mf930:-D__sparclite__} %{mf934:-D__sparclite__} \
246 %{mv8:-D__sparc_v8__} \
247 %{msupersparc:-D__supersparc__ -D__sparc_v8__} \
248 %{mcpu=sparclet:-D__sparclet__} %{mcpu=tsc701:-D__sparclet__} \
249 %{mcpu=sparclite:-D__sparclite__} \
250 %{mcpu=f930:-D__sparclite__} %{mcpu=f934:-D__sparclite__} \
251 %{mcpu=v8:-D__sparc_v8__} \
252 %{mcpu=supersparc:-D__supersparc__ -D__sparc_v8__} \
253 %{mcpu=hypersparc:-D__hypersparc__ -D__sparc_v8__} \
254 %{mcpu=sparclite86x:-D__sparclite86x__} \
255 %{mcpu=v9:-D__sparc_v9__} \
256 %{mcpu=ultrasparc:-D__sparc_v9__} \
257 %{mcpu=ultrasparc3:-D__sparc_v9__} \
258 %{!mcpu*:%{!mcypress:%{!msparclite:%{!mf930:%{!mf934:%{!mv8:%{!msupersparc:%(cpp_cpu_default)}}}}}}} \
260 #define CPP_ARCH32_SPEC ""
261 #define CPP_ARCH64_SPEC "-D__arch64__"
263 #define CPP_ARCH_DEFAULT_SPEC \
264 (DEFAULT_ARCH32_P ? CPP_ARCH32_SPEC : CPP_ARCH64_SPEC)
266 #define CPP_ARCH_SPEC "\
267 %{m32:%(cpp_arch32)} \
268 %{m64:%(cpp_arch64)} \
269 %{!m32:%{!m64:%(cpp_arch_default)}} \
272 /* Macros to distinguish endianness. */
273 #define CPP_ENDIAN_SPEC "\
274 %{mlittle-endian:-D__LITTLE_ENDIAN__} \
275 %{mlittle-endian-data:-D__LITTLE_ENDIAN_DATA__}"
277 /* Macros to distinguish the particular subtarget. */
278 #define CPP_SUBTARGET_SPEC ""
280 #define CPP_SPEC "%(cpp_cpu) %(cpp_arch) %(cpp_endian) %(cpp_subtarget)"
282 /* Prevent error on `-sun4' and `-target sun4' options. */
283 /* This used to translate -dalign to -malign, but that is no good
284 because it can't turn off the usual meaning of making debugging dumps. */
285 /* Translate old style -m<cpu> into new style -mcpu=<cpu>.
286 ??? Delete support for -m<cpu> for 2.9. */
289 %{sun4:} %{target:} \
290 %{mcypress:-mcpu=cypress} \
291 %{msparclite:-mcpu=sparclite} %{mf930:-mcpu=f930} %{mf934:-mcpu=f934} \
292 %{mv8:-mcpu=v8} %{msupersparc:-mcpu=supersparc} \
295 /* Override in target specific files. */
296 #define ASM_CPU_SPEC "\
297 %{mcpu=sparclet:-Asparclet} %{mcpu=tsc701:-Asparclet} \
298 %{msparclite:-Asparclite} \
299 %{mf930:-Asparclite} %{mf934:-Asparclite} \
300 %{mcpu=sparclite:-Asparclite} \
301 %{mcpu=sparclite86x:-Asparclite} \
302 %{mcpu=f930:-Asparclite} %{mcpu=f934:-Asparclite} \
303 %{mv8plus:-Av8plus} \
305 %{mcpu=ultrasparc:%{!mv8plus:-Av9a}} \
306 %{mcpu=ultrasparc3:%{!mv8plus:-Av9b}} \
307 %{!mcpu*:%{!mcypress:%{!msparclite:%{!mf930:%{!mf934:%{!mv8:%{!msupersparc:%(asm_cpu_default)}}}}}}} \
310 /* Word size selection, among other things.
311 This is what GAS uses. Add %(asm_arch) to ASM_SPEC to enable. */
313 #define ASM_ARCH32_SPEC "-32"
314 #ifdef HAVE_AS_REGISTER_PSEUDO_OP
315 #define ASM_ARCH64_SPEC "-64 -no-undeclared-regs"
317 #define ASM_ARCH64_SPEC "-64"
319 #define ASM_ARCH_DEFAULT_SPEC \
320 (DEFAULT_ARCH32_P ? ASM_ARCH32_SPEC : ASM_ARCH64_SPEC)
322 #define ASM_ARCH_SPEC "\
323 %{m32:%(asm_arch32)} \
324 %{m64:%(asm_arch64)} \
325 %{!m32:%{!m64:%(asm_arch_default)}} \
328 #ifdef HAVE_AS_RELAX_OPTION
329 #define ASM_RELAX_SPEC "%{!mno-relax:-relax}"
331 #define ASM_RELAX_SPEC ""
334 /* Special flags to the Sun-4 assembler when using pipe for input. */
337 %{R} %{!pg:%{!p:%{fpic:-k} %{fPIC:-k}}} %{keep-local-as-symbols:-L} \
338 %(asm_cpu) %(asm_relax)"
340 #define AS_NEEDS_DASH_FOR_PIPED_INPUT
342 /* This macro defines names of additional specifications to put in the specs
343 that can be used in various specifications like CC1_SPEC. Its definition
344 is an initializer with a subgrouping for each command option.
346 Each subgrouping contains a string constant, that defines the
347 specification name, and a string constant that used by the GNU CC driver
350 Do not define this macro if it does not need to do anything. */
352 #define EXTRA_SPECS \
353 { "cpp_cpu", CPP_CPU_SPEC }, \
354 { "cpp_cpu_default", CPP_CPU_DEFAULT_SPEC }, \
355 { "cpp_arch32", CPP_ARCH32_SPEC }, \
356 { "cpp_arch64", CPP_ARCH64_SPEC }, \
357 { "cpp_arch_default", CPP_ARCH_DEFAULT_SPEC },\
358 { "cpp_arch", CPP_ARCH_SPEC }, \
359 { "cpp_endian", CPP_ENDIAN_SPEC }, \
360 { "cpp_subtarget", CPP_SUBTARGET_SPEC }, \
361 { "asm_cpu", ASM_CPU_SPEC }, \
362 { "asm_cpu_default", ASM_CPU_DEFAULT_SPEC }, \
363 { "asm_arch32", ASM_ARCH32_SPEC }, \
364 { "asm_arch64", ASM_ARCH64_SPEC }, \
365 { "asm_relax", ASM_RELAX_SPEC }, \
366 { "asm_arch_default", ASM_ARCH_DEFAULT_SPEC },\
367 { "asm_arch", ASM_ARCH_SPEC }, \
368 SUBTARGET_EXTRA_SPECS
370 #define SUBTARGET_EXTRA_SPECS
372 /* Because libgcc can generate references back to libc (via .umul etc.) we have
373 to list libc again after the second libgcc. */
374 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G %L"
377 #define PTRDIFF_TYPE (TARGET_ARCH64 ? "long int" : "int")
378 #define SIZE_TYPE (TARGET_ARCH64 ? "long unsigned int" : "unsigned int")
380 /* ??? This should be 32 bits for v9 but what can we do? */
381 #define WCHAR_TYPE "short unsigned int"
382 #define WCHAR_TYPE_SIZE 16
384 /* Show we can debug even without a frame pointer. */
385 #define CAN_DEBUG_WITHOUT_FP
387 #define OVERRIDE_OPTIONS sparc_override_options ()
389 /* Generate DBX debugging information. */
391 #define DBX_DEBUGGING_INFO 1
393 /* Run-time compilation parameters selecting different hardware subsets. */
395 extern int target_flags;
397 /* Nonzero if we should generate code to use the fpu. */
399 #define TARGET_FPU (target_flags & MASK_FPU)
401 /* Nonzero if we should assume that double pointers might be unaligned.
402 This can happen when linking gcc compiled code with other compilers,
403 because the ABI only guarantees 4 byte alignment. */
404 #define MASK_UNALIGNED_DOUBLES 4
405 #define TARGET_UNALIGNED_DOUBLES (target_flags & MASK_UNALIGNED_DOUBLES)
407 /* Nonzero means that we should generate code for a v8 sparc. */
409 #define TARGET_V8 (target_flags & MASK_V8)
411 /* Nonzero means that we should generate code for a sparclite.
412 This enables the sparclite specific instructions, but does not affect
413 whether FPU instructions are emitted. */
414 #define MASK_SPARCLITE 0x10
415 #define TARGET_SPARCLITE (target_flags & MASK_SPARCLITE)
417 /* Nonzero if we're compiling for the sparclet. */
418 #define MASK_SPARCLET 0x20
419 #define TARGET_SPARCLET (target_flags & MASK_SPARCLET)
421 /* Nonzero if we're compiling for v9 sparc.
422 Note that v9's can run in 32 bit mode so this doesn't necessarily mean
423 the word size is 64. */
425 #define TARGET_V9 (target_flags & MASK_V9)
427 /* Nonzero to generate code that uses the instructions deprecated in
428 the v9 architecture. This option only applies to v9 systems. */
429 /* ??? This isn't user selectable yet. It's used to enable such insns
430 on 32 bit v9 systems and for the moment they're permanently disabled
431 on 64 bit v9 systems. */
432 #define MASK_DEPRECATED_V8_INSNS 0x80
433 #define TARGET_DEPRECATED_V8_INSNS (target_flags & MASK_DEPRECATED_V8_INSNS)
435 /* Mask of all CPU selection flags. */
437 (MASK_V8 + MASK_SPARCLITE + MASK_SPARCLET + MASK_V9 + MASK_DEPRECATED_V8_INSNS)
439 /* Nonzero means don't pass `-assert pure-text' to the linker. */
440 #define MASK_IMPURE_TEXT 0x100
441 #define TARGET_IMPURE_TEXT (target_flags & MASK_IMPURE_TEXT)
443 /* Nonzero means that we should generate code using a flat register window
444 model, i.e. no save/restore instructions are generated, which is
445 compatible with normal sparc code.
446 The frame pointer is %i7 instead of %fp. */
447 #define MASK_FLAT 0x200
448 #define TARGET_FLAT (target_flags & MASK_FLAT)
450 /* Nonzero means use the registers that the SPARC ABI reserves for
451 application software. This must be the default to coincide with the
452 setting in FIXED_REGISTERS. */
453 #define MASK_APP_REGS 0x400
454 #define TARGET_APP_REGS (target_flags & MASK_APP_REGS)
456 /* Option to select how quad word floating point is implemented.
457 When TARGET_HARD_QUAD is true, we use the hardware quad instructions.
458 Otherwise, we use the SPARC ABI quad library functions. */
459 #define MASK_HARD_QUAD 0x800
460 #define TARGET_HARD_QUAD (target_flags & MASK_HARD_QUAD)
462 /* Nonzero on little-endian machines. */
463 /* ??? Little endian support currently only exists for sparclet-aout and
464 sparc64-elf configurations. May eventually want to expand the support
465 to all targets, but for now it's kept local to only those two. */
466 #define MASK_LITTLE_ENDIAN 0x1000
467 #define TARGET_LITTLE_ENDIAN (target_flags & MASK_LITTLE_ENDIAN)
469 /* 0x2000, 0x4000 are unused */
471 /* Nonzero if pointers are 64 bits. */
472 #define MASK_PTR64 0x8000
473 #define TARGET_PTR64 (target_flags & MASK_PTR64)
475 /* Nonzero if generating code to run in a 64 bit environment.
476 This is intended to only be used by TARGET_ARCH{32,64} as they are the
477 mechanism used to control compile time or run time selection. */
478 #define MASK_64BIT 0x10000
479 #define TARGET_64BIT (target_flags & MASK_64BIT)
481 /* 0x20000,0x40000 unused */
483 /* Nonzero means use a stack bias of 2047. Stack offsets are obtained by
484 adding 2047 to %sp. This option is for v9 only and is the default. */
485 #define MASK_STACK_BIAS 0x80000
486 #define TARGET_STACK_BIAS (target_flags & MASK_STACK_BIAS)
488 /* 0x100000,0x200000 unused */
490 /* Nonzero means -m{,no-}fpu was passed on the command line. */
491 #define MASK_FPU_SET 0x400000
492 #define TARGET_FPU_SET (target_flags & MASK_FPU_SET)
494 /* Use the UltraSPARC Visual Instruction Set extensions. */
495 #define MASK_VIS 0x1000000
496 #define TARGET_VIS (target_flags & MASK_VIS)
498 /* Compile for Solaris V8+. 32 bit Solaris preserves the high bits of
499 the current out and global registers and Linux 2.2+ as well. */
500 #define MASK_V8PLUS 0x2000000
501 #define TARGET_V8PLUS (target_flags & MASK_V8PLUS)
503 /* Force a the fastest alignment on structures to take advantage of
505 #define MASK_FASTER_STRUCTS 0x4000000
506 #define TARGET_FASTER_STRUCTS (target_flags & MASK_FASTER_STRUCTS)
508 /* Use IEEE quad long double. */
509 #define MASK_LONG_DOUBLE_128 0x8000000
510 #define TARGET_LONG_DOUBLE_128 (target_flags & MASK_LONG_DOUBLE_128)
512 /* TARGET_HARD_MUL: Use hardware multiply instructions but not %y.
513 TARGET_HARD_MUL32: Use hardware multiply instructions with rd %y
514 to get high 32 bits. False in V8+ or V9 because multiply stores
515 a 64 bit result in a register. */
517 #define TARGET_HARD_MUL32 \
518 ((TARGET_V8 || TARGET_SPARCLITE \
519 || TARGET_SPARCLET || TARGET_DEPRECATED_V8_INSNS) \
520 && ! TARGET_V8PLUS && TARGET_ARCH32)
522 #define TARGET_HARD_MUL \
523 (TARGET_V8 || TARGET_SPARCLITE || TARGET_SPARCLET \
524 || TARGET_DEPRECATED_V8_INSNS || TARGET_V8PLUS)
527 /* Macro to define tables used to set the flags.
528 This is a list in braces of pairs in braces,
529 each pair being { "NAME", VALUE }
530 where VALUE is the bits to set or minus the bits to clear.
531 An empty string NAME is used to identify the default VALUE. */
533 #define TARGET_SWITCHES \
534 { {"fpu", MASK_FPU | MASK_FPU_SET, \
535 N_("Use hardware fp") }, \
536 {"no-fpu", -MASK_FPU, \
537 N_("Do not use hardware fp") }, \
538 {"no-fpu", MASK_FPU_SET, NULL, }, \
539 {"hard-float", MASK_FPU | MASK_FPU_SET, \
540 N_("Use hardware fp") }, \
541 {"soft-float", -MASK_FPU, \
542 N_("Do not use hardware fp") }, \
543 {"soft-float", MASK_FPU_SET, NULL }, \
544 {"unaligned-doubles", MASK_UNALIGNED_DOUBLES, \
545 N_("Assume possible double misalignment") }, \
546 {"no-unaligned-doubles", -MASK_UNALIGNED_DOUBLES, \
547 N_("Assume all doubles are aligned") }, \
548 {"impure-text", MASK_IMPURE_TEXT, \
549 N_("Pass -assert pure-text to linker") }, \
550 {"no-impure-text", -MASK_IMPURE_TEXT, \
551 N_("Do not pass -assert pure-text to linker") }, \
552 {"flat", MASK_FLAT, \
553 N_("Use flat register window model") }, \
554 {"no-flat", -MASK_FLAT, \
555 N_("Do not use flat register window model") }, \
556 {"app-regs", MASK_APP_REGS, \
557 N_("Use ABI reserved registers") }, \
558 {"no-app-regs", -MASK_APP_REGS, \
559 N_("Do not use ABI reserved registers") }, \
560 {"hard-quad-float", MASK_HARD_QUAD, \
561 N_("Use hardware quad fp instructions") }, \
562 {"soft-quad-float", -MASK_HARD_QUAD, \
563 N_("Do not use hardware quad fp instructions") }, \
564 {"v8plus", MASK_V8PLUS, \
565 N_("Compile for v8plus ABI") }, \
566 {"no-v8plus", -MASK_V8PLUS, \
567 N_("Do not compile for v8plus ABI") }, \
569 N_("Utilize Visual Instruction Set") }, \
570 {"no-vis", -MASK_VIS, \
571 N_("Do not utilize Visual Instruction Set") }, \
572 /* ??? These are deprecated, coerced to -mcpu=. Delete in 2.9. */ \
574 N_("Optimize for Cypress processors") }, \
576 N_("Optimize for SPARCLite processors") }, \
578 N_("Optimize for F930 processors") }, \
580 N_("Optimize for F934 processors") }, \
582 N_("Use V8 SPARC ISA") }, \
584 N_("Optimize for SuperSPARC processors") }, \
585 /* End of deprecated options. */ \
586 {"ptr64", MASK_PTR64, \
587 N_("Pointers are 64-bit") }, \
588 {"ptr32", -MASK_PTR64, \
589 N_("Pointers are 32-bit") }, \
590 {"32", -MASK_64BIT, \
591 N_("Use 32-bit ABI") }, \
593 N_("Use 64-bit ABI") }, \
594 {"stack-bias", MASK_STACK_BIAS, \
595 N_("Use stack bias") }, \
596 {"no-stack-bias", -MASK_STACK_BIAS, \
597 N_("Do not use stack bias") }, \
598 {"faster-structs", MASK_FASTER_STRUCTS, \
599 N_("Use structs on stronger alignment for double-word copies") }, \
600 {"no-faster-structs", -MASK_FASTER_STRUCTS, \
601 N_("Do not use structs on stronger alignment for double-word copies") }, \
603 N_("Optimize tail call instructions in assembler and linker") }, \
605 N_("Do not optimize tail call instructions in assembler or linker") }, \
607 { "", TARGET_DEFAULT, ""}}
609 /* MASK_APP_REGS must always be the default because that's what
610 FIXED_REGISTERS is set to and -ffixed- is processed before
611 CONDITIONAL_REGISTER_USAGE is called (where we process -mno-app-regs). */
612 #define TARGET_DEFAULT (MASK_APP_REGS + MASK_FPU)
614 /* This is meant to be redefined in target specific files. */
615 #define SUBTARGET_SWITCHES
618 These must match the values for the cpu attribute in sparc.md. */
619 enum processor_type {
623 PROCESSOR_SUPERSPARC,
627 PROCESSOR_HYPERSPARC,
628 PROCESSOR_SPARCLITE86X,
632 PROCESSOR_ULTRASPARC,
633 PROCESSOR_ULTRASPARC3
636 /* This is set from -m{cpu,tune}=xxx. */
637 extern enum processor_type sparc_cpu;
639 /* Recast the cpu class to be the cpu attribute.
640 Every file includes us, but not every file includes insn-attr.h. */
641 #define sparc_cpu_attr ((enum attr_cpu) sparc_cpu)
643 #define TARGET_OPTIONS \
645 { "cpu=", &sparc_select[1].string, \
646 N_("Use features of and schedule code for given CPU"), 0}, \
647 { "tune=", &sparc_select[2].string, \
648 N_("Schedule code for given CPU"), 0}, \
649 { "cmodel=", &sparc_cmodel_string, \
650 N_("Use given SPARC code model"), 0}, \
654 /* This is meant to be redefined in target specific files. */
655 #define SUBTARGET_OPTIONS
657 /* sparc_select[0] is reserved for the default cpu. */
658 struct sparc_cpu_select
661 const char *const name;
662 const int set_tune_p;
663 const int set_arch_p;
666 extern struct sparc_cpu_select sparc_select[];
668 /* target machine storage layout */
670 /* Define this if most significant bit is lowest numbered
671 in instructions that operate on numbered bit-fields. */
672 #define BITS_BIG_ENDIAN 1
674 /* Define this if most significant byte of a word is the lowest numbered. */
675 #define BYTES_BIG_ENDIAN 1
677 /* Define this if most significant word of a multiword number is the lowest
679 #define WORDS_BIG_ENDIAN 1
681 /* Define this to set the endianness to use in libgcc2.c, which can
682 not depend on target_flags. */
683 #if defined (__LITTLE_ENDIAN__) || defined(__LITTLE_ENDIAN_DATA__)
684 #define LIBGCC2_WORDS_BIG_ENDIAN 0
686 #define LIBGCC2_WORDS_BIG_ENDIAN 1
689 #define MAX_BITS_PER_WORD 64
691 /* Width of a word, in units (bytes). */
692 #define UNITS_PER_WORD (TARGET_ARCH64 ? 8 : 4)
694 #define MIN_UNITS_PER_WORD UNITS_PER_WORD
696 #define MIN_UNITS_PER_WORD 4
699 /* Now define the sizes of the C data types. */
701 #define SHORT_TYPE_SIZE 16
702 #define INT_TYPE_SIZE 32
703 #define LONG_TYPE_SIZE (TARGET_ARCH64 ? 64 : 32)
704 #define LONG_LONG_TYPE_SIZE 64
705 #define FLOAT_TYPE_SIZE 32
706 #define DOUBLE_TYPE_SIZE 64
709 #define MAX_LONG_TYPE_SIZE 64
713 /* ??? This does not work in SunOS 4.x, so it is not enabled here.
714 Instead, it is enabled in sol2.h, because it does work under Solaris. */
715 /* Define for support of TFmode long double.
716 SPARC ABI says that long double is 4 words. */
717 #define LONG_DOUBLE_TYPE_SIZE 128
720 /* Width in bits of a pointer.
721 See also the macro `Pmode' defined below. */
722 #define POINTER_SIZE (TARGET_PTR64 ? 64 : 32)
724 /* If we have to extend pointers (only when TARGET_ARCH64 and not
725 TARGET_PTR64), we want to do it unsigned. This macro does nothing
726 if ptr_mode and Pmode are the same. */
727 #define POINTERS_EXTEND_UNSIGNED 1
729 /* A macro to update MODE and UNSIGNEDP when an object whose type
730 is TYPE and which has the specified mode and signedness is to be
731 stored in a register. This macro is only called when TYPE is a
733 #define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \
735 && GET_MODE_CLASS (MODE) == MODE_INT \
736 && GET_MODE_SIZE (MODE) < UNITS_PER_WORD) \
739 /* Define this macro if the promotion described by PROMOTE_MODE
740 should also be done for outgoing function arguments. */
741 /* This is only needed for TARGET_ARCH64, but since PROMOTE_MODE is a no-op
742 for TARGET_ARCH32 this is ok. Otherwise we'd need to add a runtime test
744 #define PROMOTE_FUNCTION_ARGS
746 /* Define this macro if the promotion described by PROMOTE_MODE
747 should also be done for the return value of functions.
748 If this macro is defined, FUNCTION_VALUE must perform the same
749 promotions done by PROMOTE_MODE. */
750 /* This is only needed for TARGET_ARCH64, but since PROMOTE_MODE is a no-op
751 for TARGET_ARCH32 this is ok. Otherwise we'd need to add a runtime test
753 #define PROMOTE_FUNCTION_RETURN
755 /* Define this macro if the promotion described by PROMOTE_MODE
756 should _only_ be performed for outgoing function arguments or
757 function return values, as specified by PROMOTE_FUNCTION_ARGS
758 and PROMOTE_FUNCTION_RETURN, respectively. */
759 /* This is only needed for TARGET_ARCH64, but since PROMOTE_MODE is a no-op
760 for TARGET_ARCH32 this is ok. Otherwise we'd need to add a runtime test
761 for this value. For TARGET_ARCH64 we need it, as we don't have instructions
762 for arithmetic operations which do zero/sign extension at the same time,
763 so without this we end up with a srl/sra after every assignment to an
764 user variable, which means very very bad code. */
765 #define PROMOTE_FOR_CALL_ONLY
767 /* Allocation boundary (in *bits*) for storing arguments in argument list. */
768 #define PARM_BOUNDARY (TARGET_ARCH64 ? 64 : 32)
770 /* Boundary (in *bits*) on which stack pointer should be aligned. */
771 #define STACK_BOUNDARY (TARGET_ARCH64 ? 128 : 64)
773 /* ALIGN FRAMES on double word boundaries */
775 #define SPARC_STACK_ALIGN(LOC) \
776 (TARGET_ARCH64 ? (((LOC)+15) & ~15) : (((LOC)+7) & ~7))
778 /* Allocation boundary (in *bits*) for the code of a function. */
779 #define FUNCTION_BOUNDARY 32
781 /* Alignment of field after `int : 0' in a structure. */
782 #define EMPTY_FIELD_BOUNDARY (TARGET_ARCH64 ? 64 : 32)
784 /* Every structure's size must be a multiple of this. */
785 #define STRUCTURE_SIZE_BOUNDARY 8
787 /* A bit-field declared as `int' forces `int' alignment for the struct. */
788 #define PCC_BITFIELD_TYPE_MATTERS 1
790 /* No data type wants to be aligned rounder than this. */
791 #define BIGGEST_ALIGNMENT (TARGET_ARCH64 ? 128 : 64)
793 /* The best alignment to use in cases where we have a choice. */
794 #define FASTEST_ALIGNMENT 64
796 /* Define this macro as an expression for the alignment of a structure
797 (given by STRUCT as a tree node) if the alignment computed in the
798 usual way is COMPUTED and the alignment explicitly specified was
801 The default is to use SPECIFIED if it is larger; otherwise, use
802 the smaller of COMPUTED and `BIGGEST_ALIGNMENT' */
803 #define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \
804 (TARGET_FASTER_STRUCTS ? \
805 ((TREE_CODE (STRUCT) == RECORD_TYPE \
806 || TREE_CODE (STRUCT) == UNION_TYPE \
807 || TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \
808 && TYPE_FIELDS (STRUCT) != 0 \
809 ? MAX (MAX ((COMPUTED), (SPECIFIED)), BIGGEST_ALIGNMENT) \
810 : MAX ((COMPUTED), (SPECIFIED))) \
811 : MAX ((COMPUTED), (SPECIFIED)))
813 /* Make strings word-aligned so strcpy from constants will be faster. */
814 #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
815 ((TREE_CODE (EXP) == STRING_CST \
816 && (ALIGN) < FASTEST_ALIGNMENT) \
817 ? FASTEST_ALIGNMENT : (ALIGN))
819 /* Make arrays of chars word-aligned for the same reasons. */
820 #define DATA_ALIGNMENT(TYPE, ALIGN) \
821 (TREE_CODE (TYPE) == ARRAY_TYPE \
822 && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \
823 && (ALIGN) < FASTEST_ALIGNMENT ? FASTEST_ALIGNMENT : (ALIGN))
825 /* Set this nonzero if move instructions will actually fail to work
826 when given unaligned data. */
827 #define STRICT_ALIGNMENT 1
829 /* Things that must be doubleword aligned cannot go in the text section,
830 because the linker fails to align the text section enough!
831 Put them in the data section. This macro is only used in this file. */
832 #define MAX_TEXT_ALIGN 32
834 /* This forces all variables and constants to the data section when PIC.
835 This is because the SunOS 4 shared library scheme thinks everything in
836 text is a function, and patches the address to point to a loader stub. */
837 /* This is defined to zero for every system which doesn't use the a.out object
839 #ifndef SUNOS4_SHARED_LIBRARIES
840 #define SUNOS4_SHARED_LIBRARIES 0
843 /* Standard register usage. */
845 /* Number of actual hardware registers.
846 The hardware registers are assigned numbers for the compiler
847 from 0 to just below FIRST_PSEUDO_REGISTER.
848 All registers that the compiler knows about must be given numbers,
849 even those that are not normally considered general registers.
851 SPARC has 32 integer registers and 32 floating point registers.
852 64 bit SPARC has 32 additional fp regs, but the odd numbered ones are not
853 accessible. We still account for them to simplify register computations
854 (eg: in CLASS_MAX_NREGS). There are also 4 fp condition code registers, so
856 Register 100 is used as the integer condition code register.
857 Register 101 is used as the soft frame pointer register. */
859 #define FIRST_PSEUDO_REGISTER 102
861 #define SPARC_FIRST_FP_REG 32
862 /* Additional V9 fp regs. */
863 #define SPARC_FIRST_V9_FP_REG 64
864 #define SPARC_LAST_V9_FP_REG 95
865 /* V9 %fcc[0123]. V8 uses (figuratively) %fcc0. */
866 #define SPARC_FIRST_V9_FCC_REG 96
867 #define SPARC_LAST_V9_FCC_REG 99
869 #define SPARC_FCC_REG 96
870 /* Integer CC reg. We don't distinguish %icc from %xcc. */
871 #define SPARC_ICC_REG 100
873 /* Nonzero if REGNO is an fp reg. */
874 #define SPARC_FP_REG_P(REGNO) \
875 ((REGNO) >= SPARC_FIRST_FP_REG && (REGNO) <= SPARC_LAST_V9_FP_REG)
877 /* Argument passing regs. */
878 #define SPARC_OUTGOING_INT_ARG_FIRST 8
879 #define SPARC_INCOMING_INT_ARG_FIRST (TARGET_FLAT ? 8 : 24)
880 #define SPARC_FP_ARG_FIRST 32
882 /* 1 for registers that have pervasive standard uses
883 and are not available for the register allocator.
886 g1 is free to use as temporary.
887 g2-g4 are reserved for applications. Gcc normally uses them as
888 temporaries, but this can be disabled via the -mno-app-regs option.
889 g5 through g7 are reserved for the operating system.
892 g1,g5 are free to use as temporaries, and are free to use between calls
893 if the call is to an external function via the PLT.
894 g4 is free to use as a temporary in the non-embedded case.
895 g4 is reserved in the embedded case.
896 g2-g3 are reserved for applications. Gcc normally uses them as
897 temporaries, but this can be disabled via the -mno-app-regs option.
898 g6-g7 are reserved for the operating system (or application in
900 ??? Register 1 is used as a temporary by the 64 bit sethi pattern, so must
901 currently be a fixed register until this pattern is rewritten.
902 Register 1 is also used when restoring call-preserved registers in large
905 Registers fixed in arch32 and not arch64 (or vice-versa) are marked in
906 CONDITIONAL_REGISTER_USAGE in order to properly handle -ffixed-.
909 #define FIXED_REGISTERS \
910 {1, 0, 2, 2, 2, 2, 1, 1, \
911 0, 0, 0, 0, 0, 0, 1, 0, \
912 0, 0, 0, 0, 0, 0, 0, 0, \
913 0, 0, 0, 0, 0, 0, 1, 1, \
915 0, 0, 0, 0, 0, 0, 0, 0, \
916 0, 0, 0, 0, 0, 0, 0, 0, \
917 0, 0, 0, 0, 0, 0, 0, 0, \
918 0, 0, 0, 0, 0, 0, 0, 0, \
920 0, 0, 0, 0, 0, 0, 0, 0, \
921 0, 0, 0, 0, 0, 0, 0, 0, \
922 0, 0, 0, 0, 0, 0, 0, 0, \
923 0, 0, 0, 0, 0, 0, 0, 0, \
927 /* 1 for registers not available across function calls.
928 These must include the FIXED_REGISTERS and also any
929 registers that can be used without being saved.
930 The latter must include the registers where values are returned
931 and the register where structure-value addresses are passed.
932 Aside from that, you can include as many other registers as you like. */
934 #define CALL_USED_REGISTERS \
935 {1, 1, 1, 1, 1, 1, 1, 1, \
936 1, 1, 1, 1, 1, 1, 1, 1, \
937 0, 0, 0, 0, 0, 0, 0, 0, \
938 0, 0, 0, 0, 0, 0, 1, 1, \
940 1, 1, 1, 1, 1, 1, 1, 1, \
941 1, 1, 1, 1, 1, 1, 1, 1, \
942 1, 1, 1, 1, 1, 1, 1, 1, \
943 1, 1, 1, 1, 1, 1, 1, 1, \
945 1, 1, 1, 1, 1, 1, 1, 1, \
946 1, 1, 1, 1, 1, 1, 1, 1, \
947 1, 1, 1, 1, 1, 1, 1, 1, \
948 1, 1, 1, 1, 1, 1, 1, 1, \
952 /* If !TARGET_FPU, then make the fp registers and fp cc regs fixed so that
953 they won't be allocated. */
955 #define CONDITIONAL_REGISTER_USAGE \
958 if (PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM) \
960 fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
961 call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
963 /* If the user has passed -f{fixed,call-{used,saved}}-g5 */ \
964 /* then honor it. */ \
965 if (TARGET_ARCH32 && fixed_regs[5]) \
967 else if (TARGET_ARCH64 && fixed_regs[5] == 2) \
972 for (regno = SPARC_FIRST_V9_FP_REG; \
973 regno <= SPARC_LAST_V9_FP_REG; \
975 fixed_regs[regno] = 1; \
976 /* %fcc0 is used by v8 and v9. */ \
977 for (regno = SPARC_FIRST_V9_FCC_REG + 1; \
978 regno <= SPARC_LAST_V9_FCC_REG; \
980 fixed_regs[regno] = 1; \
985 for (regno = 32; regno < SPARC_LAST_V9_FCC_REG; regno++) \
986 fixed_regs[regno] = 1; \
988 /* If the user has passed -f{fixed,call-{used,saved}}-g2 */ \
989 /* then honor it. Likewise with g3 and g4. */ \
990 if (fixed_regs[2] == 2) \
991 fixed_regs[2] = ! TARGET_APP_REGS; \
992 if (fixed_regs[3] == 2) \
993 fixed_regs[3] = ! TARGET_APP_REGS; \
994 if (TARGET_ARCH32 && fixed_regs[4] == 2) \
995 fixed_regs[4] = ! TARGET_APP_REGS; \
996 else if (TARGET_CM_EMBMEDANY) \
998 else if (fixed_regs[4] == 2) \
1003 /* Let the compiler believe the frame pointer is still \
1004 %fp, but output it as %i7. */ \
1005 fixed_regs[31] = 1; \
1006 reg_names[HARD_FRAME_POINTER_REGNUM] = "%i7"; \
1007 /* Disable leaf functions */ \
1008 memset (sparc_leaf_regs, 0, FIRST_PSEUDO_REGISTER); \
1009 /* Make LEAF_REG_REMAP a noop. */ \
1010 for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++) \
1011 leaf_reg_remap [regno] = regno; \
1016 /* Return number of consecutive hard regs needed starting at reg REGNO
1017 to hold something of mode MODE.
1018 This is ordinarily the length in words of a value of mode MODE
1019 but can be less for certain modes in special long registers.
1021 On SPARC, ordinary registers hold 32 bits worth;
1022 this means both integer and floating point registers.
1023 On v9, integer regs hold 64 bits worth; floating point regs hold
1024 32 bits worth (this includes the new fp regs as even the odd ones are
1025 included in the hard register count). */
1027 #define HARD_REGNO_NREGS(REGNO, MODE) \
1029 ? ((REGNO) < 32 || (REGNO) == FRAME_POINTER_REGNUM \
1030 ? (GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD \
1031 : (GET_MODE_SIZE (MODE) + 3) / 4) \
1032 : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
1034 /* Due to the ARCH64 descrepancy above we must override this next
1036 #define REGMODE_NATURAL_SIZE(MODE) \
1037 ((TARGET_ARCH64 && FLOAT_MODE_P (MODE)) ? 4 : UNITS_PER_WORD)
1039 /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
1040 See sparc.c for how we initialize this. */
1041 extern const int *hard_regno_mode_classes;
1042 extern int sparc_mode_class[];
1044 /* ??? Because of the funny way we pass parameters we should allow certain
1045 ??? types of float/complex values to be in integer registers during
1046 ??? RTL generation. This only matters on arch32. */
1047 #define HARD_REGNO_MODE_OK(REGNO, MODE) \
1048 ((hard_regno_mode_classes[REGNO] & sparc_mode_class[MODE]) != 0)
1050 /* Value is 1 if it is a good idea to tie two pseudo registers
1051 when one has mode MODE1 and one has mode MODE2.
1052 If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
1053 for any hard reg, then this must be 0 for correct output.
1055 For V9: SFmode can't be combined with other float modes, because they can't
1056 be allocated to the %d registers. Also, DFmode won't fit in odd %f
1057 registers, but SFmode will. */
1058 #define MODES_TIEABLE_P(MODE1, MODE2) \
1059 ((MODE1) == (MODE2) \
1060 || (GET_MODE_CLASS (MODE1) == GET_MODE_CLASS (MODE2) \
1062 || (GET_MODE_CLASS (MODE1) != MODE_FLOAT \
1063 || (MODE1 != SFmode && MODE2 != SFmode)))))
1065 /* Specify the registers used for certain standard purposes.
1066 The values of these macros are register numbers. */
1068 /* SPARC pc isn't overloaded on a register that the compiler knows about. */
1069 /* #define PC_REGNUM */
1071 /* Register to use for pushing function arguments. */
1072 #define STACK_POINTER_REGNUM 14
1074 /* The stack bias (amount by which the hardware register is offset by). */
1075 #define SPARC_STACK_BIAS ((TARGET_ARCH64 && TARGET_STACK_BIAS) ? 2047 : 0)
1077 /* Actual top-of-stack address is 92/176 greater than the contents of the
1078 stack pointer register for !v9/v9. That is:
1079 - !v9: 64 bytes for the in and local registers, 4 bytes for structure return
1080 address, and 6*4 bytes for the 6 register parameters.
1081 - v9: 128 bytes for the in and local registers + 6*8 bytes for the integer
1083 #define STACK_POINTER_OFFSET (FIRST_PARM_OFFSET(0) + SPARC_STACK_BIAS)
1085 /* Base register for access to local variables of the function. */
1086 #define HARD_FRAME_POINTER_REGNUM 30
1088 /* The soft frame pointer does not have the stack bias applied. */
1089 #define FRAME_POINTER_REGNUM 101
1091 /* Given the stack bias, the stack pointer isn't actually aligned. */
1092 #define INIT_EXPANDERS \
1094 if (cfun && cfun->emit->regno_pointer_align && SPARC_STACK_BIAS) \
1096 REGNO_POINTER_ALIGN (STACK_POINTER_REGNUM) = BITS_PER_UNIT; \
1097 REGNO_POINTER_ALIGN (HARD_FRAME_POINTER_REGNUM) = BITS_PER_UNIT; \
1101 /* Value should be nonzero if functions must have frame pointers.
1102 Zero means the frame pointer need not be set up (and parms
1103 may be accessed via the stack pointer) in functions that seem suitable.
1104 This is computed in `reload', in reload1.c.
1105 Used in flow.c, global.c, and reload1.c.
1107 Being a non-leaf function does not mean a frame pointer is needed in the
1108 flat window model. However, the debugger won't be able to backtrace through
1110 #define FRAME_POINTER_REQUIRED \
1112 ? (current_function_calls_alloca \
1113 || !leaf_function_p ()) \
1114 : ! (leaf_function_p () && only_leaf_regs_used ()))
1116 /* Base register for access to arguments of the function. */
1117 #define ARG_POINTER_REGNUM FRAME_POINTER_REGNUM
1119 /* Register in which static-chain is passed to a function. This must
1120 not be a register used by the prologue. */
1121 #define STATIC_CHAIN_REGNUM (TARGET_ARCH64 ? 5 : 2)
1123 /* Register which holds offset table for position-independent
1126 #define PIC_OFFSET_TABLE_REGNUM (flag_pic ? 23 : INVALID_REGNUM)
1128 /* Pick a default value we can notice from override_options:
1130 v9: Default is off. */
1132 #define DEFAULT_PCC_STRUCT_RETURN -1
1134 /* SPARC ABI says that quad-precision floats and all structures are returned
1136 For v9: unions <= 32 bytes in size are returned in int regs,
1137 structures up to 32 bytes are returned in int and fp regs. */
1139 #define RETURN_IN_MEMORY(TYPE) \
1141 ? (TYPE_MODE (TYPE) == BLKmode \
1142 || TYPE_MODE (TYPE) == TFmode \
1143 || TYPE_MODE (TYPE) == TCmode) \
1144 : (TYPE_MODE (TYPE) == BLKmode \
1145 && (unsigned HOST_WIDE_INT) int_size_in_bytes (TYPE) > 32))
1147 /* Functions which return large structures get the address
1148 to place the wanted value at offset 64 from the frame.
1149 Must reserve 64 bytes for the in and local registers.
1150 v9: Functions which return large structures get the address to place the
1151 wanted value from an invisible first argument. */
1152 /* Used only in other #defines in this file. */
1153 #define STRUCT_VALUE_OFFSET 64
1155 #define STRUCT_VALUE \
1158 : gen_rtx_MEM (Pmode, plus_constant (stack_pointer_rtx, \
1159 STRUCT_VALUE_OFFSET)))
1161 #define STRUCT_VALUE_INCOMING \
1164 : gen_rtx_MEM (Pmode, plus_constant (frame_pointer_rtx, \
1165 STRUCT_VALUE_OFFSET)))
1167 /* Define the classes of registers for register constraints in the
1168 machine description. Also define ranges of constants.
1170 One of the classes must always be named ALL_REGS and include all hard regs.
1171 If there is more than one class, another class must be named NO_REGS
1172 and contain no registers.
1174 The name GENERAL_REGS must be the name of a class (or an alias for
1175 another name such as ALL_REGS). This is the class of registers
1176 that is allowed by "g" or "r" in a register constraint.
1177 Also, registers outside this class are allocated only when
1178 instructions express preferences for them.
1180 The classes must be numbered in nondecreasing order; that is,
1181 a larger-numbered class must never be contained completely
1182 in a smaller-numbered class.
1184 For any two classes, it is very desirable that there be another
1185 class that represents their union. */
1187 /* The SPARC has various kinds of registers: general, floating point,
1188 and condition codes [well, it has others as well, but none that we
1189 care directly about].
1191 For v9 we must distinguish between the upper and lower floating point
1192 registers because the upper ones can't hold SFmode values.
1193 HARD_REGNO_MODE_OK won't help here because reload assumes that register(s)
1194 satisfying a group need for a class will also satisfy a single need for
1195 that class. EXTRA_FP_REGS is a bit of a misnomer as it covers all 64 fp
1198 It is important that one class contains all the general and all the standard
1199 fp regs. Otherwise find_reg() won't properly allocate int regs for moves,
1200 because reg_class_record() will bias the selection in favor of fp regs,
1201 because reg_class_subunion[GENERAL_REGS][FP_REGS] will yield FP_REGS,
1202 because FP_REGS > GENERAL_REGS.
1204 It is also important that one class contain all the general and all the
1205 fp regs. Otherwise when spilling a DFmode reg, it may be from EXTRA_FP_REGS
1206 but find_reloads() may use class GENERAL_OR_FP_REGS. This will cause
1207 allocate_reload_reg() to bypass it causing an abort because the compiler
1208 thinks it doesn't have a spill reg when in fact it does.
1210 v9 also has 4 floating point condition code registers. Since we don't
1211 have a class that is the union of FPCC_REGS with either of the others,
1212 it is important that it appear first. Otherwise the compiler will die
1213 trying to compile _fixunsdfsi because fix_truncdfsi2 won't match its
1216 It is important that SPARC_ICC_REG have class NO_REGS. Otherwise combine
1217 may try to use it to hold an SImode value. See register_operand.
1218 ??? Should %fcc[0123] be handled similarly?
1221 enum reg_class { NO_REGS, FPCC_REGS, I64_REGS, GENERAL_REGS, FP_REGS,
1222 EXTRA_FP_REGS, GENERAL_OR_FP_REGS, GENERAL_OR_EXTRA_FP_REGS,
1223 ALL_REGS, LIM_REG_CLASSES };
1225 #define N_REG_CLASSES (int) LIM_REG_CLASSES
1227 /* Give names of register classes as strings for dump file. */
1229 #define REG_CLASS_NAMES \
1230 { "NO_REGS", "FPCC_REGS", "I64_REGS", "GENERAL_REGS", "FP_REGS", \
1231 "EXTRA_FP_REGS", "GENERAL_OR_FP_REGS", "GENERAL_OR_EXTRA_FP_REGS", \
1234 /* Define which registers fit in which classes.
1235 This is an initializer for a vector of HARD_REG_SET
1236 of length N_REG_CLASSES. */
1238 #define REG_CLASS_CONTENTS \
1239 {{0, 0, 0, 0}, /* NO_REGS */ \
1240 {0, 0, 0, 0xf}, /* FPCC_REGS */ \
1241 {0xffff, 0, 0, 0}, /* I64_REGS */ \
1242 {-1, 0, 0, 0x20}, /* GENERAL_REGS */ \
1243 {0, -1, 0, 0}, /* FP_REGS */ \
1244 {0, -1, -1, 0}, /* EXTRA_FP_REGS */ \
1245 {-1, -1, 0, 0x20}, /* GENERAL_OR_FP_REGS */ \
1246 {-1, -1, -1, 0x20}, /* GENERAL_OR_EXTRA_FP_REGS */ \
1247 {-1, -1, -1, 0x3f}} /* ALL_REGS */
1249 /* The same information, inverted:
1250 Return the class number of the smallest class containing
1251 reg number REGNO. This could be a conditional expression
1252 or could index an array. */
1254 extern enum reg_class sparc_regno_reg_class[FIRST_PSEUDO_REGISTER];
1256 #define REGNO_REG_CLASS(REGNO) sparc_regno_reg_class[(REGNO)]
1258 /* This is the order in which to allocate registers normally.
1260 We put %f0-%f7 last among the float registers, so as to make it more
1261 likely that a pseudo-register which dies in the float return register
1262 area will get allocated to the float return register, thus saving a move
1263 instruction at the end of the function.
1265 Similarly for integer return value registers.
1267 We know in this case that we will not end up with a leaf function.
1269 The register allocater is given the global and out registers first
1270 because these registers are call clobbered and thus less useful to
1271 global register allocation.
1273 Next we list the local and in registers. They are not call clobbered
1274 and thus very useful for global register allocation. We list the input
1275 registers before the locals so that it is more likely the incoming
1276 arguments received in those registers can just stay there and not be
1279 #define REG_ALLOC_ORDER \
1280 { 1, 2, 3, 4, 5, 6, 7, /* %g1-%g7 */ \
1281 13, 12, 11, 10, 9, 8, /* %o5-%o0 */ \
1283 16, 17, 18, 19, 20, 21, 22, 23, /* %l0-%l7 */ \
1284 29, 28, 27, 26, 25, 24, 31, /* %i5-%i0,%i7 */\
1285 40, 41, 42, 43, 44, 45, 46, 47, /* %f8-%f15 */ \
1286 48, 49, 50, 51, 52, 53, 54, 55, /* %f16-%f23 */ \
1287 56, 57, 58, 59, 60, 61, 62, 63, /* %f24-%f31 */ \
1288 64, 65, 66, 67, 68, 69, 70, 71, /* %f32-%f39 */ \
1289 72, 73, 74, 75, 76, 77, 78, 79, /* %f40-%f47 */ \
1290 80, 81, 82, 83, 84, 85, 86, 87, /* %f48-%f55 */ \
1291 88, 89, 90, 91, 92, 93, 94, 95, /* %f56-%f63 */ \
1292 39, 38, 37, 36, 35, 34, 33, 32, /* %f7-%f0 */ \
1293 96, 97, 98, 99, /* %fcc0-3 */ \
1294 100, 0, 14, 30, 101} /* %icc, %g0, %o6, %i6, %sfp */
1296 /* This is the order in which to allocate registers for
1297 leaf functions. If all registers can fit in the global and
1298 output registers, then we have the possibility of having a leaf
1301 The macro actually mentioned the input registers first,
1302 because they get renumbered into the output registers once
1303 we know really do have a leaf function.
1305 To be more precise, this register allocation order is used
1306 when %o7 is found to not be clobbered right before register
1307 allocation. Normally, the reason %o7 would be clobbered is
1308 due to a call which could not be transformed into a sibling
1311 As a consequence, it is possible to use the leaf register
1312 allocation order and not end up with a leaf function. We will
1313 not get suboptimal register allocation in that case because by
1314 definition of being potentially leaf, there were no function
1315 calls. Therefore, allocation order within the local register
1316 window is not critical like it is when we do have function calls. */
1318 #define REG_LEAF_ALLOC_ORDER \
1319 { 1, 2, 3, 4, 5, 6, 7, /* %g1-%g7 */ \
1320 29, 28, 27, 26, 25, 24, /* %i5-%i0 */ \
1322 13, 12, 11, 10, 9, 8, /* %o5-%o0 */ \
1323 16, 17, 18, 19, 20, 21, 22, 23, /* %l0-%l7 */ \
1324 40, 41, 42, 43, 44, 45, 46, 47, /* %f8-%f15 */ \
1325 48, 49, 50, 51, 52, 53, 54, 55, /* %f16-%f23 */ \
1326 56, 57, 58, 59, 60, 61, 62, 63, /* %f24-%f31 */ \
1327 64, 65, 66, 67, 68, 69, 70, 71, /* %f32-%f39 */ \
1328 72, 73, 74, 75, 76, 77, 78, 79, /* %f40-%f47 */ \
1329 80, 81, 82, 83, 84, 85, 86, 87, /* %f48-%f55 */ \
1330 88, 89, 90, 91, 92, 93, 94, 95, /* %f56-%f63 */ \
1331 39, 38, 37, 36, 35, 34, 33, 32, /* %f7-%f0 */ \
1332 96, 97, 98, 99, /* %fcc0-3 */ \
1333 100, 0, 14, 30, 31, 101} /* %icc, %g0, %o6, %i6, %i7, %sfp */
1335 #define ORDER_REGS_FOR_LOCAL_ALLOC order_regs_for_local_alloc ()
1337 extern char sparc_leaf_regs[];
1338 #define LEAF_REGISTERS sparc_leaf_regs
1340 extern char leaf_reg_remap[];
1341 #define LEAF_REG_REMAP(REGNO) (leaf_reg_remap[REGNO])
1343 /* The class value for index registers, and the one for base regs. */
1344 #define INDEX_REG_CLASS GENERAL_REGS
1345 #define BASE_REG_CLASS GENERAL_REGS
1347 /* Local macro to handle the two v9 classes of FP regs. */
1348 #define FP_REG_CLASS_P(CLASS) ((CLASS) == FP_REGS || (CLASS) == EXTRA_FP_REGS)
1350 /* Get reg_class from a letter such as appears in the machine description.
1351 In the not-v9 case, coerce v9's 'e' class to 'f', so we can use 'e' in the
1352 .md file for v8 and v9.
1353 'd' and 'b' are used for single and double precision VIS operations,
1355 'h' is used for V8+ 64 bit global and out registers. */
1357 #define REG_CLASS_FROM_LETTER(C) \
1359 ? ((C) == 'f' ? FP_REGS \
1360 : (C) == 'e' ? EXTRA_FP_REGS \
1361 : (C) == 'c' ? FPCC_REGS \
1362 : ((C) == 'd' && TARGET_VIS) ? FP_REGS\
1363 : ((C) == 'b' && TARGET_VIS) ? EXTRA_FP_REGS\
1364 : ((C) == 'h' && TARGET_V8PLUS) ? I64_REGS\
1366 : ((C) == 'f' ? FP_REGS \
1367 : (C) == 'e' ? FP_REGS \
1368 : (C) == 'c' ? FPCC_REGS \
1371 /* The letters I, J, K, L and M in a register constraint string
1372 can be used to stand for particular ranges of immediate operands.
1373 This macro defines what the ranges are.
1374 C is the letter, and VALUE is a constant value.
1375 Return 1 if VALUE is in the range specified by C.
1377 `I' is used for the range of constants an insn can actually contain.
1378 `J' is used for the range which is just zero (since that is R0).
1379 `K' is used for constants which can be loaded with a single sethi insn.
1380 `L' is used for the range of constants supported by the movcc insns.
1381 `M' is used for the range of constants supported by the movrcc insns.
1382 `N' is like K, but for constants wider than 32 bits. */
1384 #define SPARC_SIMM10_P(X) ((unsigned HOST_WIDE_INT) (X) + 0x200 < 0x400)
1385 #define SPARC_SIMM11_P(X) ((unsigned HOST_WIDE_INT) (X) + 0x400 < 0x800)
1386 #define SPARC_SIMM13_P(X) ((unsigned HOST_WIDE_INT) (X) + 0x1000 < 0x2000)
1387 /* 10 and 11 bit immediates are only used for a few specific insns.
1388 SMALL_INT is used throughout the port so we continue to use it. */
1389 #define SMALL_INT(X) (SPARC_SIMM13_P (INTVAL (X)))
1390 /* 13 bit immediate, considering only the low 32 bits */
1391 #define SMALL_INT32(X) (SPARC_SIMM13_P (trunc_int_for_mode \
1392 (INTVAL (X), SImode)))
1393 #define SPARC_SETHI_P(X) \
1394 (((unsigned HOST_WIDE_INT) (X) \
1395 & ((unsigned HOST_WIDE_INT) 0x3ff - GET_MODE_MASK (SImode) - 1)) == 0)
1396 #define SPARC_SETHI32_P(X) \
1397 (SPARC_SETHI_P ((unsigned HOST_WIDE_INT) (X) & GET_MODE_MASK (SImode)))
1399 #define CONST_OK_FOR_LETTER_P(VALUE, C) \
1400 ((C) == 'I' ? SPARC_SIMM13_P (VALUE) \
1401 : (C) == 'J' ? (VALUE) == 0 \
1402 : (C) == 'K' ? SPARC_SETHI32_P (VALUE) \
1403 : (C) == 'L' ? SPARC_SIMM11_P (VALUE) \
1404 : (C) == 'M' ? SPARC_SIMM10_P (VALUE) \
1405 : (C) == 'N' ? SPARC_SETHI_P (VALUE) \
1408 /* Similar, but for floating constants, and defining letters G and H.
1409 Here VALUE is the CONST_DOUBLE rtx itself. */
1411 #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
1412 ((C) == 'G' ? fp_zero_operand (VALUE, GET_MODE (VALUE)) \
1413 : (C) == 'H' ? arith_double_operand (VALUE, DImode) \
1416 /* Given an rtx X being reloaded into a reg required to be
1417 in class CLASS, return the class of reg to actually use.
1418 In general this is just CLASS; but on some machines
1419 in some cases it is preferable to use a more restrictive class. */
1420 /* - We can't load constants into FP registers.
1421 - We can't load FP constants into integer registers when soft-float,
1422 because there is no soft-float pattern with a r/F constraint.
1423 - We can't load FP constants into integer registers for TFmode unless
1424 it is 0.0L, because there is no movtf pattern with a r/F constraint.
1425 - Try and reload integer constants (symbolic or otherwise) back into
1426 registers directly, rather than having them dumped to memory. */
1428 #define PREFERRED_RELOAD_CLASS(X,CLASS) \
1430 ? ((FP_REG_CLASS_P (CLASS) \
1431 || (CLASS) == GENERAL_OR_FP_REGS \
1432 || (CLASS) == GENERAL_OR_EXTRA_FP_REGS \
1433 || (GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \
1435 || (GET_MODE (X) == TFmode \
1436 && ! fp_zero_operand (X, TFmode))) \
1438 : (!FP_REG_CLASS_P (CLASS) \
1439 && GET_MODE_CLASS (GET_MODE (X)) == MODE_INT) \
1444 /* Return the register class of a scratch register needed to load IN into
1445 a register of class CLASS in MODE.
1447 We need a temporary when loading/storing a HImode/QImode value
1448 between memory and the FPU registers. This can happen when combine puts
1449 a paradoxical subreg in a float/fix conversion insn.
1451 We need a temporary when loading/storing a DFmode value between
1452 unaligned memory and the upper FPU registers. */
1454 #define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, IN) \
1455 ((FP_REG_CLASS_P (CLASS) \
1456 && ((MODE) == HImode || (MODE) == QImode) \
1457 && (GET_CODE (IN) == MEM \
1458 || ((GET_CODE (IN) == REG || GET_CODE (IN) == SUBREG) \
1459 && true_regnum (IN) == -1))) \
1461 : ((CLASS) == EXTRA_FP_REGS && (MODE) == DFmode \
1462 && GET_CODE (IN) == MEM && TARGET_ARCH32 \
1463 && ! mem_min_alignment ((IN), 8)) \
1465 : (((TARGET_CM_MEDANY \
1466 && symbolic_operand ((IN), (MODE))) \
1467 || (TARGET_CM_EMBMEDANY \
1468 && text_segment_operand ((IN), (MODE)))) \
1473 #define SECONDARY_OUTPUT_RELOAD_CLASS(CLASS, MODE, IN) \
1474 ((FP_REG_CLASS_P (CLASS) \
1475 && ((MODE) == HImode || (MODE) == QImode) \
1476 && (GET_CODE (IN) == MEM \
1477 || ((GET_CODE (IN) == REG || GET_CODE (IN) == SUBREG) \
1478 && true_regnum (IN) == -1))) \
1480 : ((CLASS) == EXTRA_FP_REGS && (MODE) == DFmode \
1481 && GET_CODE (IN) == MEM && TARGET_ARCH32 \
1482 && ! mem_min_alignment ((IN), 8)) \
1484 : (((TARGET_CM_MEDANY \
1485 && symbolic_operand ((IN), (MODE))) \
1486 || (TARGET_CM_EMBMEDANY \
1487 && text_segment_operand ((IN), (MODE)))) \
1492 /* On SPARC it is not possible to directly move data between
1493 GENERAL_REGS and FP_REGS. */
1494 #define SECONDARY_MEMORY_NEEDED(CLASS1, CLASS2, MODE) \
1495 (FP_REG_CLASS_P (CLASS1) != FP_REG_CLASS_P (CLASS2))
1497 /* Return the stack location to use for secondary memory needed reloads.
1498 We want to use the reserved location just below the frame pointer.
1499 However, we must ensure that there is a frame, so use assign_stack_local
1500 if the frame size is zero. */
1501 #define SECONDARY_MEMORY_NEEDED_RTX(MODE) \
1502 (get_frame_size () == 0 \
1503 ? assign_stack_local (MODE, GET_MODE_SIZE (MODE), 0) \
1504 : gen_rtx_MEM (MODE, plus_constant (frame_pointer_rtx, \
1505 STARTING_FRAME_OFFSET)))
1507 /* Get_secondary_mem widens its argument to BITS_PER_WORD which loses on v9
1508 because the movsi and movsf patterns don't handle r/f moves.
1509 For v8 we copy the default definition. */
1510 #define SECONDARY_MEMORY_NEEDED_MODE(MODE) \
1512 ? (GET_MODE_BITSIZE (MODE) < 32 \
1513 ? mode_for_size (32, GET_MODE_CLASS (MODE), 0) \
1515 : (GET_MODE_BITSIZE (MODE) < BITS_PER_WORD \
1516 ? mode_for_size (BITS_PER_WORD, GET_MODE_CLASS (MODE), 0) \
1519 /* Return the maximum number of consecutive registers
1520 needed to represent mode MODE in a register of class CLASS. */
1521 /* On SPARC, this is the size of MODE in words. */
1522 #define CLASS_MAX_NREGS(CLASS, MODE) \
1523 (FP_REG_CLASS_P (CLASS) ? (GET_MODE_SIZE (MODE) + 3) / 4 \
1524 : (GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
1526 /* Stack layout; function entry, exit and calling. */
1528 /* Define the number of register that can hold parameters.
1529 This macro is only used in other macro definitions below and in sparc.c.
1530 MODE is the mode of the argument.
1531 !v9: All args are passed in %o0-%o5.
1532 v9: %o0-%o5 and %f0-%f31 are cumulatively used to pass values.
1533 See the description in sparc.c. */
1534 #define NPARM_REGS(MODE) \
1536 ? (GET_MODE_CLASS (MODE) == MODE_FLOAT ? 32 : 6) \
1539 /* Define this if pushing a word on the stack
1540 makes the stack pointer a smaller address. */
1541 #define STACK_GROWS_DOWNWARD
1543 /* Define this if the nominal address of the stack frame
1544 is at the high-address end of the local variables;
1545 that is, each additional local variable allocated
1546 goes at a more negative offset in the frame. */
1547 #define FRAME_GROWS_DOWNWARD
1549 /* Offset within stack frame to start allocating local variables at.
1550 If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
1551 first local allocated. Otherwise, it is the offset to the BEGINNING
1552 of the first local allocated. */
1553 /* This allows space for one TFmode floating point value. */
1554 #define STARTING_FRAME_OFFSET \
1555 (TARGET_ARCH64 ? -16 \
1556 : (-SPARC_STACK_ALIGN (LONG_DOUBLE_TYPE_SIZE / BITS_PER_UNIT)))
1558 /* If we generate an insn to push BYTES bytes,
1559 this says how many the stack pointer really advances by.
1560 On SPARC, don't define this because there are no push insns. */
1561 /* #define PUSH_ROUNDING(BYTES) */
1563 /* Offset of first parameter from the argument pointer register value.
1564 !v9: This is 64 for the ins and locals, plus 4 for the struct-return reg
1565 even if this function isn't going to use it.
1566 v9: This is 128 for the ins and locals. */
1567 #define FIRST_PARM_OFFSET(FNDECL) \
1568 (TARGET_ARCH64 ? 16 * UNITS_PER_WORD : STRUCT_VALUE_OFFSET + UNITS_PER_WORD)
1570 /* Offset from the argument pointer register value to the CFA.
1571 This is different from FIRST_PARM_OFFSET because the register window
1572 comes between the CFA and the arguments. */
1573 #define ARG_POINTER_CFA_OFFSET(FNDECL) 0
1575 /* When a parameter is passed in a register, stack space is still
1577 !v9: All 6 possible integer registers have backing store allocated.
1578 v9: Only space for the arguments passed is allocated. */
1579 /* ??? Ideally, we'd use zero here (as the minimum), but zero has special
1580 meaning to the backend. Further, we need to be able to detect if a
1581 varargs/unprototyped function is called, as they may want to spill more
1582 registers than we've provided space. Ugly, ugly. So for now we retain
1583 all 6 slots even for v9. */
1584 #define REG_PARM_STACK_SPACE(DECL) (6 * UNITS_PER_WORD)
1586 /* Definitions for register elimination. */
1587 /* ??? In TARGET_FLAT mode we needn't have a hard frame pointer. */
1589 #define ELIMINABLE_REGS \
1590 {{ FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
1591 { FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM} }
1593 /* The way this is structured, we can't eliminate SFP in favor of SP
1594 if the frame pointer is required: we want to use the SFP->HFP elimination
1595 in that case. But the test in update_eliminables doesn't know we are
1596 assuming below that we only do the former elimination. */
1597 #define CAN_ELIMINATE(FROM, TO) \
1598 ((TO) == HARD_FRAME_POINTER_REGNUM || !FRAME_POINTER_REQUIRED)
1600 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
1603 if ((TO) == STACK_POINTER_REGNUM) \
1605 /* Note, we always pretend that this is a leaf function \
1606 because if it's not, there's no point in trying to \
1607 eliminate the frame pointer. If it is a leaf \
1608 function, we guessed right! */ \
1611 sparc_flat_compute_frame_size (get_frame_size ()); \
1613 (OFFSET) = compute_frame_size (get_frame_size (), 1); \
1615 (OFFSET) += SPARC_STACK_BIAS; \
1618 /* Keep the stack pointer constant throughout the function.
1619 This is both an optimization and a necessity: longjmp
1620 doesn't behave itself when the stack pointer moves within
1622 #define ACCUMULATE_OUTGOING_ARGS 1
1624 /* Value is the number of bytes of arguments automatically
1625 popped when returning from a subroutine call.
1626 FUNDECL is the declaration node of the function (as a tree),
1627 FUNTYPE is the data type of the function (as a tree),
1628 or for a library call it is an identifier node for the subroutine name.
1629 SIZE is the number of bytes of arguments passed on the stack. */
1631 #define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE) 0
1633 /* Some subroutine macros specific to this machine.
1634 When !TARGET_FPU, put float return values in the general registers,
1635 since we don't have any fp registers. */
1636 #define BASE_RETURN_VALUE_REG(MODE) \
1638 ? (TARGET_FPU && FLOAT_MODE_P (MODE) ? 32 : 8) \
1639 : (((MODE) == SFmode || (MODE) == DFmode) && TARGET_FPU ? 32 : 8))
1641 #define BASE_OUTGOING_VALUE_REG(MODE) \
1643 ? (TARGET_FPU && FLOAT_MODE_P (MODE) ? 32 \
1644 : TARGET_FLAT ? 8 : 24) \
1645 : (((MODE) == SFmode || (MODE) == DFmode) && TARGET_FPU ? 32 \
1646 : (TARGET_FLAT ? 8 : 24)))
1648 #define BASE_PASSING_ARG_REG(MODE) \
1650 ? (TARGET_FPU && FLOAT_MODE_P (MODE) ? 32 : 8) \
1653 /* ??? FIXME -- seems wrong for v9 structure passing... */
1654 #define BASE_INCOMING_ARG_REG(MODE) \
1656 ? (TARGET_FPU && FLOAT_MODE_P (MODE) ? 32 \
1657 : TARGET_FLAT ? 8 : 24) \
1658 : (TARGET_FLAT ? 8 : 24))
1660 /* Define this macro if the target machine has "register windows". This
1661 C expression returns the register number as seen by the called function
1662 corresponding to register number OUT as seen by the calling function.
1663 Return OUT if register number OUT is not an outbound register. */
1665 #define INCOMING_REGNO(OUT) \
1666 ((TARGET_FLAT || (OUT) < 8 || (OUT) > 15) ? (OUT) : (OUT) + 16)
1668 /* Define this macro if the target machine has "register windows". This
1669 C expression returns the register number as seen by the calling function
1670 corresponding to register number IN as seen by the called function.
1671 Return IN if register number IN is not an inbound register. */
1673 #define OUTGOING_REGNO(IN) \
1674 ((TARGET_FLAT || (IN) < 24 || (IN) > 31) ? (IN) : (IN) - 16)
1676 /* Define this macro if the target machine has register windows. This
1677 C expression returns true if the register is call-saved but is in the
1680 #define LOCAL_REGNO(REGNO) \
1681 (TARGET_FLAT ? 0 : (REGNO) >= 16 && (REGNO) <= 31)
1683 /* Define how to find the value returned by a function.
1684 VALTYPE is the data type of the value (as a tree).
1685 If the precise function being called is known, FUNC is its FUNCTION_DECL;
1686 otherwise, FUNC is 0. */
1688 /* On SPARC the value is found in the first "output" register. */
1690 #define FUNCTION_VALUE(VALTYPE, FUNC) \
1691 function_value ((VALTYPE), TYPE_MODE (VALTYPE), 1)
1693 /* But the called function leaves it in the first "input" register. */
1695 #define FUNCTION_OUTGOING_VALUE(VALTYPE, FUNC) \
1696 function_value ((VALTYPE), TYPE_MODE (VALTYPE), 0)
1698 /* Define how to find the value returned by a library function
1699 assuming the value has mode MODE. */
1701 #define LIBCALL_VALUE(MODE) \
1702 function_value (NULL_TREE, (MODE), 1)
1704 /* 1 if N is a possible register number for a function value
1705 as seen by the caller.
1706 On SPARC, the first "output" reg is used for integer values,
1707 and the first floating point register is used for floating point values. */
1709 #define FUNCTION_VALUE_REGNO_P(N) ((N) == 8 || (N) == 32)
1711 /* Define the size of space to allocate for the return value of an
1714 #define APPLY_RESULT_SIZE 16
1716 /* 1 if N is a possible register number for function argument passing.
1717 On SPARC, these are the "output" registers. v9 also uses %f0-%f31. */
1719 #define FUNCTION_ARG_REGNO_P(N) \
1721 ? (((N) >= 8 && (N) <= 13) || ((N) >= 32 && (N) <= 63)) \
1722 : ((N) >= 8 && (N) <= 13))
1724 /* Define a data type for recording info about an argument list
1725 during the scan of that argument list. This data type should
1726 hold all necessary information about the function itself
1727 and about the args processed so far, enough to enable macros
1728 such as FUNCTION_ARG to determine where the next arg should go.
1730 On SPARC (!v9), this is a single integer, which is a number of words
1731 of arguments scanned so far (including the invisible argument,
1732 if any, which holds the structure-value-address).
1733 Thus 7 or more means all following args should go on the stack.
1735 For v9, we also need to know whether a prototype is present. */
1738 int words; /* number of words passed so far */
1739 int prototype_p; /* nonzero if a prototype is present */
1740 int libcall_p; /* nonzero if a library call */
1742 #define CUMULATIVE_ARGS struct sparc_args
1744 /* Initialize a variable CUM of type CUMULATIVE_ARGS
1745 for a call to a function whose data type is FNTYPE.
1746 For a library call, FNTYPE is 0. */
1748 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL) \
1749 init_cumulative_args (& (CUM), (FNTYPE), (LIBNAME), (FNDECL));
1751 /* Update the data in CUM to advance over an argument
1752 of mode MODE and data type TYPE.
1753 TYPE is null for libcalls where that information may not be available. */
1755 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
1756 function_arg_advance (& (CUM), (MODE), (TYPE), (NAMED))
1758 /* Nonzero if we do not know how to pass TYPE solely in registers. */
1760 #define MUST_PASS_IN_STACK(MODE,TYPE) \
1762 && (TREE_CODE (TYPE_SIZE (TYPE)) != INTEGER_CST \
1763 || TREE_ADDRESSABLE (TYPE)))
1765 /* Determine where to put an argument to a function.
1766 Value is zero to push the argument on the stack,
1767 or a hard register in which to store the argument.
1769 MODE is the argument's machine mode.
1770 TYPE is the data type of the argument (as a tree).
1771 This is null for libcalls where that information may
1773 CUM is a variable of type CUMULATIVE_ARGS which gives info about
1774 the preceding args and about the function being called.
1775 NAMED is nonzero if this argument is a named parameter
1776 (otherwise it is an extra parameter matching an ellipsis). */
1778 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
1779 function_arg (& (CUM), (MODE), (TYPE), (NAMED), 0)
1781 /* Define where a function finds its arguments.
1782 This is different from FUNCTION_ARG because of register windows. */
1784 #define FUNCTION_INCOMING_ARG(CUM, MODE, TYPE, NAMED) \
1785 function_arg (& (CUM), (MODE), (TYPE), (NAMED), 1)
1787 /* For an arg passed partly in registers and partly in memory,
1788 this is the number of registers used.
1789 For args passed entirely in registers or entirely in memory, zero. */
1791 #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \
1792 function_arg_partial_nregs (& (CUM), (MODE), (TYPE), (NAMED))
1794 /* A C expression that indicates when an argument must be passed by reference.
1795 If nonzero for an argument, a copy of that argument is made in memory and a
1796 pointer to the argument is passed instead of the argument itself.
1797 The pointer is passed in whatever way is appropriate for passing a pointer
1800 #define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) \
1801 function_arg_pass_by_reference (& (CUM), (MODE), (TYPE), (NAMED))
1803 /* If defined, a C expression which determines whether, and in which direction,
1804 to pad out an argument with extra space. The value should be of type
1805 `enum direction': either `upward' to pad above the argument,
1806 `downward' to pad below, or `none' to inhibit padding. */
1808 #define FUNCTION_ARG_PADDING(MODE, TYPE) \
1809 function_arg_padding ((MODE), (TYPE))
1811 /* If defined, a C expression that gives the alignment boundary, in bits,
1812 of an argument with the specified mode and type. If it is not defined,
1813 PARM_BOUNDARY is used for all arguments.
1814 For sparc64, objects requiring 16 byte alignment are passed that way. */
1816 #define FUNCTION_ARG_BOUNDARY(MODE, TYPE) \
1818 && (GET_MODE_ALIGNMENT (MODE) == 128 \
1819 || ((TYPE) && TYPE_ALIGN (TYPE) == 128))) \
1820 ? 128 : PARM_BOUNDARY)
1822 /* Define the information needed to generate branch and scc insns. This is
1823 stored from the compare operation. Note that we can't use "rtx" here
1824 since it hasn't been defined! */
1826 extern GTY(()) rtx sparc_compare_op0;
1827 extern GTY(()) rtx sparc_compare_op1;
1830 /* Generate the special assembly code needed to tell the assembler whatever
1831 it might need to know about the return value of a function.
1833 For SPARC assemblers, we need to output a .proc pseudo-op which conveys
1834 information to the assembler relating to peephole optimization (done in
1837 #define ASM_DECLARE_RESULT(FILE, RESULT) \
1838 fprintf ((FILE), "\t.proc\t0%lo\n", sparc_type_code (TREE_TYPE (RESULT)))
1840 /* Output the special assembly code needed to tell the assembler some
1841 register is used as global register variable.
1843 SPARC 64bit psABI declares registers %g2 and %g3 as application
1844 registers and %g6 and %g7 as OS registers. Any object using them
1845 should declare (for %g2/%g3 has to, for %g6/%g7 can) that it uses them
1846 and how they are used (scratch or some global variable).
1847 Linker will then refuse to link together objects which use those
1848 registers incompatibly.
1850 Unless the registers are used for scratch, two different global
1851 registers cannot be declared to the same name, so in the unlikely
1852 case of a global register variable occupying more than one register
1853 we prefix the second and following registers with .gnu.part1. etc. */
1855 extern char sparc_hard_reg_printed[8];
1857 #ifdef HAVE_AS_REGISTER_PSEUDO_OP
1858 #define ASM_DECLARE_REGISTER_GLOBAL(FILE, DECL, REGNO, NAME) \
1860 if (TARGET_ARCH64) \
1862 int end = HARD_REGNO_NREGS ((REGNO), DECL_MODE (decl)) + (REGNO); \
1864 for (reg = (REGNO); reg < 8 && reg < end; reg++) \
1865 if ((reg & ~1) == 2 || (reg & ~1) == 6) \
1867 if (reg == (REGNO)) \
1868 fprintf ((FILE), "\t.register\t%%g%d, %s\n", reg, (NAME)); \
1870 fprintf ((FILE), "\t.register\t%%g%d, .gnu.part%d.%s\n", \
1871 reg, reg - (REGNO), (NAME)); \
1872 sparc_hard_reg_printed[reg] = 1; \
1879 /* Emit rtl for profiling. */
1880 #define PROFILE_HOOK(LABEL) sparc_profile_hook (LABEL)
1882 /* All the work done in PROFILE_HOOK, but still required. */
1883 #define FUNCTION_PROFILER(FILE, LABELNO) do { } while (0)
1885 /* Set the name of the mcount function for the system. */
1886 #define MCOUNT_FUNCTION "*mcount"
1888 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
1889 the stack pointer does not matter. The value is tested only in
1890 functions that have frame pointers.
1891 No definition is equivalent to always zero. */
1893 #define EXIT_IGNORE_STACK \
1894 (get_frame_size () != 0 \
1895 || current_function_calls_alloca || current_function_outgoing_args_size)
1897 #define DELAY_SLOTS_FOR_EPILOGUE \
1898 (TARGET_FLAT ? sparc_flat_epilogue_delay_slots () : 1)
1899 #define ELIGIBLE_FOR_EPILOGUE_DELAY(trial, slots_filled) \
1900 (TARGET_FLAT ? sparc_flat_eligible_for_epilogue_delay (trial, slots_filled) \
1901 : eligible_for_epilogue_delay (trial, slots_filled))
1903 /* Define registers used by the epilogue and return instruction. */
1904 #define EPILOGUE_USES(REGNO) \
1905 (!TARGET_FLAT && REGNO == 31)
1907 /* Length in units of the trampoline for entering a nested function. */
1909 #define TRAMPOLINE_SIZE (TARGET_ARCH64 ? 32 : 16)
1911 #define TRAMPOLINE_ALIGNMENT 128 /* 16 bytes */
1913 /* Emit RTL insns to initialize the variable parts of a trampoline.
1914 FNADDR is an RTX for the address of the function's pure code.
1915 CXT is an RTX for the static chain value for the function. */
1917 #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
1918 if (TARGET_ARCH64) \
1919 sparc64_initialize_trampoline (TRAMP, FNADDR, CXT); \
1921 sparc_initialize_trampoline (TRAMP, FNADDR, CXT)
1923 /* Generate necessary RTL for __builtin_saveregs(). */
1925 #define EXPAND_BUILTIN_SAVEREGS() sparc_builtin_saveregs ()
1927 /* Implement `va_start' for varargs and stdarg. */
1928 #define EXPAND_BUILTIN_VA_START(valist, nextarg) \
1929 sparc_va_start (valist, nextarg)
1931 /* Implement `va_arg'. */
1932 #define EXPAND_BUILTIN_VA_ARG(valist, type) \
1933 sparc_va_arg (valist, type)
1935 /* Define this macro if the location where a function argument is passed
1936 depends on whether or not it is a named argument.
1938 This macro controls how the NAMED argument to FUNCTION_ARG
1939 is set for varargs and stdarg functions. With this macro defined,
1940 the NAMED argument is always true for named arguments, and false for
1941 unnamed arguments. If this is not defined, but SETUP_INCOMING_VARARGS
1942 is defined, then all arguments are treated as named. Otherwise, all named
1943 arguments except the last are treated as named.
1944 For the v9 we want NAMED to mean what it says it means. */
1946 #define STRICT_ARGUMENT_NAMING TARGET_V9
1948 /* Generate RTL to flush the register windows so as to make arbitrary frames
1950 #define SETUP_FRAME_ADDRESSES() \
1951 emit_insn (gen_flush_register_windows ())
1953 /* Given an rtx for the address of a frame,
1954 return an rtx for the address of the word in the frame
1955 that holds the dynamic chain--the previous frame's address.
1956 ??? -mflat support? */
1957 #define DYNAMIC_CHAIN_ADDRESS(frame) \
1958 plus_constant (frame, 14 * UNITS_PER_WORD + SPARC_STACK_BIAS)
1960 /* The return address isn't on the stack, it is in a register, so we can't
1961 access it from the current frame pointer. We can access it from the
1962 previous frame pointer though by reading a value from the register window
1964 #define RETURN_ADDR_IN_PREVIOUS_FRAME
1966 /* This is the offset of the return address to the true next instruction to be
1967 executed for the current function. */
1968 #define RETURN_ADDR_OFFSET \
1969 (8 + 4 * (! TARGET_ARCH64 && current_function_returns_struct))
1971 /* The current return address is in %i7. The return address of anything
1972 farther back is in the register window save area at [%fp+60]. */
1973 /* ??? This ignores the fact that the actual return address is +8 for normal
1974 returns, and +12 for structure returns. */
1975 #define RETURN_ADDR_RTX(count, frame) \
1977 ? gen_rtx_REG (Pmode, 31) \
1978 : gen_rtx_MEM (Pmode, \
1979 memory_address (Pmode, plus_constant (frame, \
1980 15 * UNITS_PER_WORD \
1981 + SPARC_STACK_BIAS))))
1983 /* Before the prologue, the return address is %o7 + 8. OK, sometimes it's
1984 +12, but always using +8 is close enough for frame unwind purposes.
1985 Actually, just using %o7 is close enough for unwinding, but %o7+8
1986 is something you can return to. */
1987 #define INCOMING_RETURN_ADDR_RTX \
1988 plus_constant (gen_rtx_REG (word_mode, 15), 8)
1989 #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (15)
1991 /* The offset from the incoming value of %sp to the top of the stack frame
1992 for the current function. On sparc64, we have to account for the stack
1994 #define INCOMING_FRAME_SP_OFFSET SPARC_STACK_BIAS
1996 /* Describe how we implement __builtin_eh_return. */
1997 #define EH_RETURN_DATA_REGNO(N) ((N) < 4 ? (N) + 24 : INVALID_REGNUM)
1998 #define EH_RETURN_STACKADJ_RTX gen_rtx_REG (Pmode, 1) /* %g1 */
1999 #define EH_RETURN_HANDLER_RTX gen_rtx_REG (Pmode, 31) /* %i7 */
2001 /* Select a format to encode pointers in exception handling data. CODE
2002 is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is
2003 true if the symbol may be affected by dynamic relocations.
2005 If assembler and linker properly support .uaword %r_disp32(foo),
2006 then use PC relative 32-bit relocations instead of absolute relocs
2007 for shared libraries. On sparc64, use pc relative 32-bit relocs even
2008 for binaries, to save memory.
2010 binutils 2.12 would emit a R_SPARC_DISP32 dynamic relocation if the
2011 symbol %r_disp32() is against was not local, but .hidden. In that
2012 case, we have to use DW_EH_PE_absptr for pic personality. */
2013 #ifdef HAVE_AS_SPARC_UA_PCREL
2014 #ifdef HAVE_AS_SPARC_UA_PCREL_HIDDEN
2015 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
2017 ? (GLOBAL ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4\
2018 : ((TARGET_ARCH64 && ! GLOBAL) \
2019 ? (DW_EH_PE_pcrel | DW_EH_PE_sdata4) \
2022 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
2024 ? (GLOBAL ? DW_EH_PE_absptr : (DW_EH_PE_pcrel | DW_EH_PE_sdata4)) \
2025 : ((TARGET_ARCH64 && ! GLOBAL) \
2026 ? (DW_EH_PE_pcrel | DW_EH_PE_sdata4) \
2030 /* Emit a PC-relative relocation. */
2031 #define ASM_OUTPUT_DWARF_PCREL(FILE, SIZE, LABEL) \
2033 fputs (integer_asm_op (SIZE, FALSE), FILE); \
2034 fprintf (FILE, "%%r_disp%d(", SIZE * 8); \
2035 assemble_name (FILE, LABEL); \
2036 fputc (')', FILE); \
2040 /* Addressing modes, and classification of registers for them. */
2042 /* Macros to check register numbers against specific register classes. */
2044 /* These assume that REGNO is a hard or pseudo reg number.
2045 They give nonzero only if REGNO is a hard reg of the suitable class
2046 or a pseudo reg currently allocated to a suitable hard reg.
2047 Since they use reg_renumber, they are safe only once reg_renumber
2048 has been allocated, which happens in local-alloc.c. */
2050 #define REGNO_OK_FOR_INDEX_P(REGNO) \
2051 ((REGNO) < 32 || (unsigned) reg_renumber[REGNO] < (unsigned)32 \
2052 || (REGNO) == FRAME_POINTER_REGNUM \
2053 || reg_renumber[REGNO] == FRAME_POINTER_REGNUM)
2055 #define REGNO_OK_FOR_BASE_P(REGNO) REGNO_OK_FOR_INDEX_P (REGNO)
2057 #define REGNO_OK_FOR_FP_P(REGNO) \
2058 (((unsigned) (REGNO) - 32 < (TARGET_V9 ? (unsigned)64 : (unsigned)32)) \
2059 || ((unsigned) reg_renumber[REGNO] - 32 < (TARGET_V9 ? (unsigned)64 : (unsigned)32)))
2060 #define REGNO_OK_FOR_CCFP_P(REGNO) \
2062 && (((unsigned) (REGNO) - 96 < (unsigned)4) \
2063 || ((unsigned) reg_renumber[REGNO] - 96 < (unsigned)4)))
2065 /* Now macros that check whether X is a register and also,
2066 strictly, whether it is in a specified class.
2068 These macros are specific to the SPARC, and may be used only
2069 in code for printing assembler insns and in conditions for
2070 define_optimization. */
2072 /* 1 if X is an fp register. */
2074 #define FP_REG_P(X) (REG_P (X) && REGNO_OK_FOR_FP_P (REGNO (X)))
2076 /* Is X, a REG, an in or global register? i.e. is regno 0..7 or 24..31 */
2077 #define IN_OR_GLOBAL_P(X) (REGNO (X) < 8 || (REGNO (X) >= 24 && REGNO (X) <= 31))
2079 /* Maximum number of registers that can appear in a valid memory address. */
2081 #define MAX_REGS_PER_ADDRESS 2
2083 /* Recognize any constant value that is a valid address.
2084 When PIC, we do not accept an address that would require a scratch reg
2085 to load into a register. */
2087 #define CONSTANT_ADDRESS_P(X) \
2088 (GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF \
2089 || GET_CODE (X) == CONST_INT || GET_CODE (X) == HIGH \
2090 || (GET_CODE (X) == CONST \
2091 && ! (flag_pic && pic_address_needs_scratch (X))))
2093 /* Define this, so that when PIC, reload won't try to reload invalid
2094 addresses which require two reload registers. */
2096 #define LEGITIMATE_PIC_OPERAND_P(X) (! pic_address_needs_scratch (X))
2098 /* Nonzero if the constant value X is a legitimate general operand.
2099 Anything can be made to work except floating point constants.
2100 If TARGET_VIS, 0.0 can be made to work as well. */
2102 #define LEGITIMATE_CONSTANT_P(X) \
2103 (GET_CODE (X) != CONST_DOUBLE || GET_MODE (X) == VOIDmode || \
2105 (GET_MODE (X) == SFmode || GET_MODE (X) == DFmode || \
2106 GET_MODE (X) == TFmode) && \
2107 fp_zero_operand (X, GET_MODE (X))))
2109 /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
2110 and check its validity for a certain class.
2111 We have two alternate definitions for each of them.
2112 The usual definition accepts all pseudo regs; the other rejects
2113 them unless they have been allocated suitable hard regs.
2114 The symbol REG_OK_STRICT causes the latter definition to be used.
2116 Most source files want to accept pseudo regs in the hope that
2117 they will get allocated to the class that the insn wants them to be in.
2118 Source files for reload pass need to be strict.
2119 After reload, it makes no difference, since pseudo regs have
2120 been eliminated by then. */
2122 /* Optional extra constraints for this machine.
2124 'Q' handles floating point constants which can be moved into
2125 an integer register with a single sethi instruction.
2127 'R' handles floating point constants which can be moved into
2128 an integer register with a single mov instruction.
2130 'S' handles floating point constants which can be moved into
2131 an integer register using a high/lo_sum sequence.
2133 'T' handles memory addresses where the alignment is known to
2134 be at least 8 bytes.
2136 `U' handles all pseudo registers or a hard even numbered
2137 integer register, needed for ldd/std instructions.
2139 'W' handles the memory operand when moving operands in/out
2140 of 'e' constraint floating point registers. */
2142 #ifndef REG_OK_STRICT
2144 /* Nonzero if X is a hard reg that can be used as an index
2145 or if it is a pseudo reg. */
2146 #define REG_OK_FOR_INDEX_P(X) \
2148 || REGNO (X) == FRAME_POINTER_REGNUM \
2149 || REGNO (X) >= FIRST_PSEUDO_REGISTER)
2151 /* Nonzero if X is a hard reg that can be used as a base reg
2152 or if it is a pseudo reg. */
2153 #define REG_OK_FOR_BASE_P(X) REG_OK_FOR_INDEX_P (X)
2155 /* 'T', 'U' are for aligned memory loads which aren't needed for arch64.
2156 'W' is like 'T' but is assumed true on arch64.
2158 Remember to accept pseudo-registers for memory constraints if reload is
2161 #define EXTRA_CONSTRAINT(OP, C) \
2162 sparc_extra_constraint_check(OP, C, 0)
2166 /* Nonzero if X is a hard reg that can be used as an index. */
2167 #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
2168 /* Nonzero if X is a hard reg that can be used as a base reg. */
2169 #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
2171 #define EXTRA_CONSTRAINT(OP, C) \
2172 sparc_extra_constraint_check(OP, C, 1)
2176 /* Should gcc use [%reg+%lo(xx)+offset] addresses? */
2178 #ifdef HAVE_AS_OFFSETABLE_LO10
2179 #define USE_AS_OFFSETABLE_LO10 1
2181 #define USE_AS_OFFSETABLE_LO10 0
2184 /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
2185 that is a valid memory address for an instruction.
2186 The MODE argument is the machine mode for the MEM expression
2187 that wants to use this address.
2189 On SPARC, the actual legitimate addresses must be REG+REG or REG+SMALLINT
2190 ordinarily. This changes a bit when generating PIC.
2192 If you change this, execute "rm explow.o recog.o reload.o". */
2194 #define SYMBOLIC_CONST(X) symbolic_operand (X, VOIDmode)
2196 #define RTX_OK_FOR_BASE_P(X) \
2197 ((GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) \
2198 || (GET_CODE (X) == SUBREG \
2199 && GET_CODE (SUBREG_REG (X)) == REG \
2200 && REG_OK_FOR_BASE_P (SUBREG_REG (X))))
2202 #define RTX_OK_FOR_INDEX_P(X) \
2203 ((GET_CODE (X) == REG && REG_OK_FOR_INDEX_P (X)) \
2204 || (GET_CODE (X) == SUBREG \
2205 && GET_CODE (SUBREG_REG (X)) == REG \
2206 && REG_OK_FOR_INDEX_P (SUBREG_REG (X))))
2208 #define RTX_OK_FOR_OFFSET_P(X) \
2209 (GET_CODE (X) == CONST_INT && INTVAL (X) >= -0x1000 && INTVAL (X) < 0x1000 - 8)
2211 #define RTX_OK_FOR_OLO10_P(X) \
2212 (GET_CODE (X) == CONST_INT && INTVAL (X) >= -0x1000 && INTVAL (X) < 0xc00 - 8)
2214 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \
2215 { if (RTX_OK_FOR_BASE_P (X)) \
2217 else if (GET_CODE (X) == PLUS) \
2219 register rtx op0 = XEXP (X, 0); \
2220 register rtx op1 = XEXP (X, 1); \
2221 if (flag_pic && op0 == pic_offset_table_rtx) \
2223 if (RTX_OK_FOR_BASE_P (op1)) \
2225 else if (flag_pic == 1 \
2226 && GET_CODE (op1) != REG \
2227 && GET_CODE (op1) != LO_SUM \
2228 && GET_CODE (op1) != MEM \
2229 && (! SYMBOLIC_CONST (op1) \
2231 && (GET_CODE (op1) != CONST_INT \
2232 || SMALL_INT (op1))) \
2235 else if (RTX_OK_FOR_BASE_P (op0)) \
2237 if ((RTX_OK_FOR_INDEX_P (op1) \
2238 /* We prohibit REG + REG for TFmode when \
2239 there are no instructions which accept \
2240 REG+REG instructions. We do this \
2241 because REG+REG is not an offsetable \
2242 address. If we get the situation \
2243 in reload where source and destination \
2244 of a movtf pattern are both MEMs with \
2245 REG+REG address, then only one of them \
2246 gets converted to an offsetable \
2248 && (MODE != TFmode \
2249 || (TARGET_FPU && TARGET_ARCH64 \
2251 && TARGET_HARD_QUAD)) \
2252 /* We prohibit REG + REG on ARCH32 if \
2253 not optimizing for DFmode/DImode \
2254 because then mem_min_alignment is \
2255 likely to be zero after reload and the \
2256 forced split would lack a matching \
2257 splitter pattern. */ \
2258 && (TARGET_ARCH64 || optimize \
2259 || (MODE != DFmode \
2260 && MODE != DImode))) \
2261 || RTX_OK_FOR_OFFSET_P (op1)) \
2264 else if (RTX_OK_FOR_BASE_P (op1)) \
2266 if ((RTX_OK_FOR_INDEX_P (op0) \
2267 /* See the previous comment. */ \
2268 && (MODE != TFmode \
2269 || (TARGET_FPU && TARGET_ARCH64 \
2271 && TARGET_HARD_QUAD)) \
2272 && (TARGET_ARCH64 || optimize \
2273 || (MODE != DFmode \
2274 && MODE != DImode))) \
2275 || RTX_OK_FOR_OFFSET_P (op0)) \
2278 else if (USE_AS_OFFSETABLE_LO10 \
2279 && GET_CODE (op0) == LO_SUM \
2281 && ! TARGET_CM_MEDMID \
2282 && RTX_OK_FOR_OLO10_P (op1)) \
2284 register rtx op00 = XEXP (op0, 0); \
2285 register rtx op01 = XEXP (op0, 1); \
2286 if (RTX_OK_FOR_BASE_P (op00) \
2287 && CONSTANT_P (op01)) \
2290 else if (USE_AS_OFFSETABLE_LO10 \
2291 && GET_CODE (op1) == LO_SUM \
2293 && ! TARGET_CM_MEDMID \
2294 && RTX_OK_FOR_OLO10_P (op0)) \
2296 register rtx op10 = XEXP (op1, 0); \
2297 register rtx op11 = XEXP (op1, 1); \
2298 if (RTX_OK_FOR_BASE_P (op10) \
2299 && CONSTANT_P (op11)) \
2303 else if (GET_CODE (X) == LO_SUM) \
2305 register rtx op0 = XEXP (X, 0); \
2306 register rtx op1 = XEXP (X, 1); \
2307 if (RTX_OK_FOR_BASE_P (op0) \
2308 && CONSTANT_P (op1) \
2309 /* We can't allow TFmode, because an offset \
2310 greater than or equal to the alignment (8) \
2311 may cause the LO_SUM to overflow if !v9. */\
2312 && (MODE != TFmode || TARGET_V9)) \
2315 else if (GET_CODE (X) == CONST_INT && SMALL_INT (X)) \
2319 /* Go to LABEL if ADDR (a legitimate address expression)
2320 has an effect that depends on the machine mode it is used for.
2326 is not equivalent to
2328 (mem:QI [%l7+a]) (mem:QI [%l7+a+1])
2330 because [%l7+a+1] is interpreted as the address of (a+1). */
2332 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL) \
2334 if (flag_pic == 1) \
2336 if (GET_CODE (ADDR) == PLUS) \
2338 rtx op0 = XEXP (ADDR, 0); \
2339 rtx op1 = XEXP (ADDR, 1); \
2340 if (op0 == pic_offset_table_rtx \
2341 && SYMBOLIC_CONST (op1)) \
2347 /* Try machine-dependent ways of modifying an illegitimate address
2348 to be legitimate. If we find one, return the new, valid address.
2349 This macro is used in only one place: `memory_address' in explow.c.
2351 OLDX is the address as it was before break_out_memory_refs was called.
2352 In some cases it is useful to look at this to decide what needs to be done.
2354 MODE and WIN are passed so that this macro can use
2355 GO_IF_LEGITIMATE_ADDRESS.
2357 It is always safe for this macro to do nothing. It exists to recognize
2358 opportunities to optimize the output. */
2360 /* On SPARC, change REG+N into REG+REG, and REG+(X*Y) into REG+REG. */
2361 #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) \
2362 { rtx sparc_x = (X); \
2363 if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 0)) == MULT) \
2364 (X) = gen_rtx_PLUS (Pmode, XEXP (X, 1), \
2365 force_operand (XEXP (X, 0), NULL_RTX)); \
2366 if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 1)) == MULT) \
2367 (X) = gen_rtx_PLUS (Pmode, XEXP (X, 0), \
2368 force_operand (XEXP (X, 1), NULL_RTX)); \
2369 if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 0)) == PLUS) \
2370 (X) = gen_rtx_PLUS (Pmode, force_operand (XEXP (X, 0), NULL_RTX),\
2372 if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 1)) == PLUS) \
2373 (X) = gen_rtx_PLUS (Pmode, XEXP (X, 0), \
2374 force_operand (XEXP (X, 1), NULL_RTX)); \
2375 if (sparc_x != (X) && memory_address_p (MODE, X)) \
2377 if (flag_pic) (X) = legitimize_pic_address (X, MODE, 0); \
2378 else if (GET_CODE (X) == PLUS && CONSTANT_ADDRESS_P (XEXP (X, 1))) \
2379 (X) = gen_rtx_PLUS (Pmode, XEXP (X, 0), \
2380 copy_to_mode_reg (Pmode, XEXP (X, 1))); \
2381 else if (GET_CODE (X) == PLUS && CONSTANT_ADDRESS_P (XEXP (X, 0))) \
2382 (X) = gen_rtx_PLUS (Pmode, XEXP (X, 1), \
2383 copy_to_mode_reg (Pmode, XEXP (X, 0))); \
2384 else if (GET_CODE (X) == SYMBOL_REF || GET_CODE (X) == CONST \
2385 || GET_CODE (X) == LABEL_REF) \
2386 (X) = copy_to_suggested_reg (X, NULL_RTX, Pmode); \
2387 if (memory_address_p (MODE, X)) \
2390 /* Try a machine-dependent way of reloading an illegitimate address
2391 operand. If we find one, push the reload and jump to WIN. This
2392 macro is used in only one place: `find_reloads_address' in reload.c.
2394 For SPARC 32, we wish to handle addresses by splitting them into
2395 HIGH+LO_SUM pairs, retaining the LO_SUM in the memory reference.
2396 This cuts the number of extra insns by one.
2398 Do nothing when generating PIC code and the address is a
2399 symbolic operand or requires a scratch register. */
2401 #define LEGITIMIZE_RELOAD_ADDRESS(X,MODE,OPNUM,TYPE,IND_LEVELS,WIN) \
2403 /* Decompose SImode constants into hi+lo_sum. We do have to \
2404 rerecognize what we produce, so be careful. */ \
2405 if (CONSTANT_P (X) \
2406 && (MODE != TFmode || TARGET_ARCH64) \
2407 && GET_MODE (X) == SImode \
2408 && GET_CODE (X) != LO_SUM && GET_CODE (X) != HIGH \
2410 && (symbolic_operand (X, Pmode) \
2411 || pic_address_needs_scratch (X))) \
2412 && sparc_cmodel <= CM_MEDLOW) \
2414 X = gen_rtx_LO_SUM (GET_MODE (X), \
2415 gen_rtx_HIGH (GET_MODE (X), X), X); \
2416 push_reload (XEXP (X, 0), NULL_RTX, &XEXP (X, 0), NULL, \
2417 BASE_REG_CLASS, GET_MODE (X), VOIDmode, 0, 0, \
2421 /* ??? 64-bit reloads. */ \
2424 /* Specify the machine mode that this machine uses
2425 for the index in the tablejump instruction. */
2426 /* If we ever implement any of the full models (such as CM_FULLANY),
2427 this has to be DImode in that case */
2428 #ifdef HAVE_GAS_SUBSECTION_ORDERING
2429 #define CASE_VECTOR_MODE \
2430 (! TARGET_PTR64 ? SImode : flag_pic ? SImode : TARGET_CM_MEDLOW ? SImode : DImode)
2432 /* If assembler does not have working .subsection -1, we use DImode for pic, as otherwise
2433 we have to sign extend which slows things down. */
2434 #define CASE_VECTOR_MODE \
2435 (! TARGET_PTR64 ? SImode : flag_pic ? DImode : TARGET_CM_MEDLOW ? SImode : DImode)
2438 /* Define as C expression which evaluates to nonzero if the tablejump
2439 instruction expects the table to contain offsets from the address of the
2441 Do not define this if the table should contain absolute addresses. */
2442 /* #define CASE_VECTOR_PC_RELATIVE 1 */
2444 /* Define this as 1 if `char' should by default be signed; else as 0. */
2445 #define DEFAULT_SIGNED_CHAR 1
2447 /* Max number of bytes we can move from memory to memory
2448 in one reasonably fast instruction. */
2451 #if 0 /* Sun 4 has matherr, so this is no good. */
2452 /* This is the value of the error code EDOM for this machine,
2453 used by the sqrt instruction. */
2454 #define TARGET_EDOM 33
2456 /* This is how to refer to the variable errno. */
2457 #define GEN_ERRNO_RTX \
2458 gen_rtx_MEM (SImode, gen_rtx_SYMBOL_REF (Pmode, "errno"))
2461 /* Define if operations between registers always perform the operation
2462 on the full register even if a narrower mode is specified. */
2463 #define WORD_REGISTER_OPERATIONS
2465 /* Define if loading in MODE, an integral mode narrower than BITS_PER_WORD
2466 will either zero-extend or sign-extend. The value of this macro should
2467 be the code that says which one of the two operations is implicitly
2468 done, NIL if none. */
2469 #define LOAD_EXTEND_OP(MODE) ZERO_EXTEND
2471 /* Nonzero if access to memory by bytes is slow and undesirable.
2472 For RISC chips, it means that access to memory by bytes is no
2473 better than access by words when possible, so grab a whole word
2474 and maybe make use of that. */
2475 #define SLOW_BYTE_ACCESS 1
2477 /* We assume that the store-condition-codes instructions store 0 for false
2478 and some other value for true. This is the value stored for true. */
2480 #define STORE_FLAG_VALUE 1
2482 /* When a prototype says `char' or `short', really pass an `int'. */
2483 #define PROMOTE_PROTOTYPES (TARGET_ARCH32)
2485 /* Define this to be nonzero if shift instructions ignore all but the low-order
2487 #define SHIFT_COUNT_TRUNCATED 1
2489 /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
2490 is done just by pretending it is already truncated. */
2491 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
2493 /* Specify the machine mode that pointers have.
2494 After generation of rtl, the compiler makes no further distinction
2495 between pointers and any other objects of this machine mode. */
2496 #define Pmode (TARGET_ARCH64 ? DImode : SImode)
2498 /* Generate calls to memcpy, memcmp and memset. */
2499 #define TARGET_MEM_FUNCTIONS
2501 /* Given a comparison code (EQ, NE, etc.) and the first operand of a COMPARE,
2502 return the mode to be used for the comparison. For floating-point,
2503 CCFP[E]mode is used. CC_NOOVmode should be used when the first operand
2504 is a PLUS, MINUS, NEG, or ASHIFT. CCmode should be used when no special
2505 processing is needed. */
2506 #define SELECT_CC_MODE(OP,X,Y) select_cc_mode ((OP), (X), (Y))
2508 /* Return nonzero if MODE implies a floating point inequality can be
2509 reversed. For SPARC this is always true because we have a full
2510 compliment of ordered and unordered comparisons, but until generic
2511 code knows how to reverse it correctly we keep the old definition. */
2512 #define REVERSIBLE_CC_MODE(MODE) ((MODE) != CCFPEmode && (MODE) != CCFPmode)
2514 /* A function address in a call instruction for indexing purposes. */
2515 #define FUNCTION_MODE Pmode
2517 /* Define this if addresses of constant functions
2518 shouldn't be put through pseudo regs where they can be cse'd.
2519 Desirable on machines where ordinary constants are expensive
2520 but a CALL with constant address is cheap. */
2521 #define NO_FUNCTION_CSE
2523 /* alloca should avoid clobbering the old register save area. */
2524 #define SETJMP_VIA_SAVE_AREA
2526 /* Define subroutines to call to handle multiply and divide.
2527 Use the subroutines that Sun's library provides.
2528 The `*' prevents an underscore from being prepended by the compiler. */
2530 #define DIVSI3_LIBCALL "*.div"
2531 #define UDIVSI3_LIBCALL "*.udiv"
2532 #define MODSI3_LIBCALL "*.rem"
2533 #define UMODSI3_LIBCALL "*.urem"
2534 /* .umul is a little faster than .mul. */
2535 #define MULSI3_LIBCALL "*.umul"
2537 /* Define library calls for quad FP operations. These are all part of the
2539 #define ADDTF3_LIBCALL "_Q_add"
2540 #define SUBTF3_LIBCALL "_Q_sub"
2541 #define NEGTF2_LIBCALL "_Q_neg"
2542 #define MULTF3_LIBCALL "_Q_mul"
2543 #define DIVTF3_LIBCALL "_Q_div"
2544 #define FLOATSITF2_LIBCALL "_Q_itoq"
2545 #define FIX_TRUNCTFSI2_LIBCALL "_Q_qtoi"
2546 #define FIXUNS_TRUNCTFSI2_LIBCALL "_Q_qtou"
2547 #define EXTENDSFTF2_LIBCALL "_Q_stoq"
2548 #define TRUNCTFSF2_LIBCALL "_Q_qtos"
2549 #define EXTENDDFTF2_LIBCALL "_Q_dtoq"
2550 #define TRUNCTFDF2_LIBCALL "_Q_qtod"
2551 #define EQTF2_LIBCALL "_Q_feq"
2552 #define NETF2_LIBCALL "_Q_fne"
2553 #define GTTF2_LIBCALL "_Q_fgt"
2554 #define GETF2_LIBCALL "_Q_fge"
2555 #define LTTF2_LIBCALL "_Q_flt"
2556 #define LETF2_LIBCALL "_Q_fle"
2558 /* Assume by default that the _Qp_* 64-bit libcalls are implemented such
2559 that the inputs are fully consumed before the output memory is clobbered. */
2561 #define TARGET_BUGGY_QP_LIB 0
2563 /* We can define the TFmode sqrt optab only if TARGET_FPU. This is because
2564 with soft-float, the SFmode and DFmode sqrt instructions will be absent,
2565 and the compiler will notice and try to use the TFmode sqrt instruction
2566 for calls to the builtin function sqrt, but this fails. */
2567 #define INIT_TARGET_OPTABS \
2569 if (TARGET_ARCH32) \
2571 add_optab->handlers[(int) TFmode].libfunc \
2572 = init_one_libfunc (ADDTF3_LIBCALL); \
2573 sub_optab->handlers[(int) TFmode].libfunc \
2574 = init_one_libfunc (SUBTF3_LIBCALL); \
2575 neg_optab->handlers[(int) TFmode].libfunc \
2576 = init_one_libfunc (NEGTF2_LIBCALL); \
2577 smul_optab->handlers[(int) TFmode].libfunc \
2578 = init_one_libfunc (MULTF3_LIBCALL); \
2579 sdiv_optab->handlers[(int) TFmode].libfunc \
2580 = init_one_libfunc (DIVTF3_LIBCALL); \
2581 eqtf2_libfunc = init_one_libfunc (EQTF2_LIBCALL); \
2582 netf2_libfunc = init_one_libfunc (NETF2_LIBCALL); \
2583 gttf2_libfunc = init_one_libfunc (GTTF2_LIBCALL); \
2584 getf2_libfunc = init_one_libfunc (GETF2_LIBCALL); \
2585 lttf2_libfunc = init_one_libfunc (LTTF2_LIBCALL); \
2586 letf2_libfunc = init_one_libfunc (LETF2_LIBCALL); \
2587 trunctfsf2_libfunc = init_one_libfunc (TRUNCTFSF2_LIBCALL); \
2588 trunctfdf2_libfunc = init_one_libfunc (TRUNCTFDF2_LIBCALL); \
2589 extendsftf2_libfunc = init_one_libfunc (EXTENDSFTF2_LIBCALL); \
2590 extenddftf2_libfunc = init_one_libfunc (EXTENDDFTF2_LIBCALL); \
2591 floatsitf_libfunc = init_one_libfunc (FLOATSITF2_LIBCALL); \
2592 fixtfsi_libfunc = init_one_libfunc (FIX_TRUNCTFSI2_LIBCALL); \
2593 fixunstfsi_libfunc \
2594 = init_one_libfunc (FIXUNS_TRUNCTFSI2_LIBCALL); \
2596 sqrt_optab->handlers[(int) TFmode].libfunc \
2597 = init_one_libfunc ("_Q_sqrt"); \
2599 if (TARGET_ARCH64) \
2601 /* In the SPARC 64bit ABI, these libfuncs do not exist in the \
2602 library. Make sure the compiler does not emit calls to them \
2604 sdiv_optab->handlers[(int) SImode].libfunc = NULL; \
2605 udiv_optab->handlers[(int) SImode].libfunc = NULL; \
2606 smod_optab->handlers[(int) SImode].libfunc = NULL; \
2607 umod_optab->handlers[(int) SImode].libfunc = NULL; \
2608 smul_optab->handlers[(int) SImode].libfunc = NULL; \
2610 INIT_SUBTARGET_OPTABS; \
2613 /* This is meant to be redefined in the host dependent files */
2614 #define INIT_SUBTARGET_OPTABS
2616 /* Nonzero if a floating point comparison library call for
2617 mode MODE that will return a boolean value. Zero if one
2618 of the libgcc2 functions is used. */
2619 #define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) ((MODE) == TFmode)
2621 /* Compute extra cost of moving data between one register class
2623 #define GENERAL_OR_I64(C) ((C) == GENERAL_REGS || (C) == I64_REGS)
2624 #define REGISTER_MOVE_COST(MODE, CLASS1, CLASS2) \
2625 (((FP_REG_CLASS_P (CLASS1) && GENERAL_OR_I64 (CLASS2)) \
2626 || (GENERAL_OR_I64 (CLASS1) && FP_REG_CLASS_P (CLASS2)) \
2627 || (CLASS1) == FPCC_REGS || (CLASS2) == FPCC_REGS) \
2628 ? ((sparc_cpu == PROCESSOR_ULTRASPARC \
2629 || sparc_cpu == PROCESSOR_ULTRASPARC3) ? 12 : 6) : 2)
2631 /* Provide the cost of a branch. For pre-v9 processors we use
2632 a value of 3 to take into account the potential annulling of
2633 the delay slot (which ends up being a bubble in the pipeline slot)
2634 plus a cycle to take into consideration the instruction cache
2637 On v9 and later, which have branch prediction facilities, we set
2638 it to the depth of the pipeline as that is the cost of a
2639 mispredicted branch. */
2641 #define BRANCH_COST \
2642 ((sparc_cpu == PROCESSOR_V9 \
2643 || sparc_cpu == PROCESSOR_ULTRASPARC) \
2645 : (sparc_cpu == PROCESSOR_ULTRASPARC3 \
2648 #define PREFETCH_BLOCK \
2649 ((sparc_cpu == PROCESSOR_ULTRASPARC \
2650 || sparc_cpu == PROCESSOR_ULTRASPARC3) \
2653 #define SIMULTANEOUS_PREFETCHES \
2654 ((sparc_cpu == PROCESSOR_ULTRASPARC) \
2656 : (sparc_cpu == PROCESSOR_ULTRASPARC3 \
2659 /* Control the assembler format that we output. */
2661 /* Output at beginning of assembler file. */
2663 #define ASM_FILE_START(file)
2665 /* A C string constant describing how to begin a comment in the target
2666 assembler language. The compiler assumes that the comment will end at
2667 the end of the line. */
2669 #define ASM_COMMENT_START "!"
2671 /* Output to assembler file text saying following lines
2672 may contain character constants, extra white space, comments, etc. */
2674 #define ASM_APP_ON ""
2676 /* Output to assembler file text saying following lines
2677 no longer contain unusual constructs. */
2679 #define ASM_APP_OFF ""
2681 /* ??? Try to make the style consistent here (_OP?). */
2683 #define ASM_FLOAT ".single"
2684 #define ASM_DOUBLE ".double"
2685 #define ASM_LONGDOUBLE ".xxx" /* ??? Not known (or used yet). */
2687 /* How to refer to registers in assembler output.
2688 This sequence is indexed by compiler's hard-register-number (see above). */
2690 #define REGISTER_NAMES \
2691 {"%g0", "%g1", "%g2", "%g3", "%g4", "%g5", "%g6", "%g7", \
2692 "%o0", "%o1", "%o2", "%o3", "%o4", "%o5", "%sp", "%o7", \
2693 "%l0", "%l1", "%l2", "%l3", "%l4", "%l5", "%l6", "%l7", \
2694 "%i0", "%i1", "%i2", "%i3", "%i4", "%i5", "%fp", "%i7", \
2695 "%f0", "%f1", "%f2", "%f3", "%f4", "%f5", "%f6", "%f7", \
2696 "%f8", "%f9", "%f10", "%f11", "%f12", "%f13", "%f14", "%f15", \
2697 "%f16", "%f17", "%f18", "%f19", "%f20", "%f21", "%f22", "%f23", \
2698 "%f24", "%f25", "%f26", "%f27", "%f28", "%f29", "%f30", "%f31", \
2699 "%f32", "%f33", "%f34", "%f35", "%f36", "%f37", "%f38", "%f39", \
2700 "%f40", "%f41", "%f42", "%f43", "%f44", "%f45", "%f46", "%f47", \
2701 "%f48", "%f49", "%f50", "%f51", "%f52", "%f53", "%f54", "%f55", \
2702 "%f56", "%f57", "%f58", "%f59", "%f60", "%f61", "%f62", "%f63", \
2703 "%fcc0", "%fcc1", "%fcc2", "%fcc3", "%icc", "%sfp" }
2705 /* Define additional names for use in asm clobbers and asm declarations. */
2707 #define ADDITIONAL_REGISTER_NAMES \
2708 {{"ccr", SPARC_ICC_REG}, {"cc", SPARC_ICC_REG}}
2710 /* On Sun 4, this limit is 2048. We use 1000 to be safe, since the length
2711 can run past this up to a continuation point. Once we used 1500, but
2712 a single entry in C++ can run more than 500 bytes, due to the length of
2713 mangled symbol names. dbxout.c should really be fixed to do
2714 continuations when they are actually needed instead of trying to
2716 #define DBX_CONTIN_LENGTH 1000
2718 /* This is how to output a command to make the user-level label named NAME
2719 defined for reference from other files. */
2721 /* Globalizing directive for a label. */
2722 #define GLOBAL_ASM_OP "\t.global "
2724 /* The prefix to add to user-visible assembler symbols. */
2726 #define USER_LABEL_PREFIX "_"
2728 /* This is how to store into the string LABEL
2729 the symbol_ref name of an internal numbered label where
2730 PREFIX is the class of label and NUM is the number within the class.
2731 This is suitable for output with `assemble_name'. */
2733 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
2734 sprintf ((LABEL), "*%s%ld", (PREFIX), (long)(NUM))
2736 /* This is how we hook in and defer the case-vector until the end of
2738 #define ASM_OUTPUT_ADDR_VEC(LAB,VEC) \
2739 sparc_defer_case_vector ((LAB),(VEC), 0)
2741 #define ASM_OUTPUT_ADDR_DIFF_VEC(LAB,VEC) \
2742 sparc_defer_case_vector ((LAB),(VEC), 1)
2744 /* This is how to output an element of a case-vector that is absolute. */
2746 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
2749 ASM_GENERATE_INTERNAL_LABEL (label, "L", VALUE); \
2750 if (CASE_VECTOR_MODE == SImode) \
2751 fprintf (FILE, "\t.word\t"); \
2753 fprintf (FILE, "\t.xword\t"); \
2754 assemble_name (FILE, label); \
2755 fputc ('\n', FILE); \
2758 /* This is how to output an element of a case-vector that is relative.
2759 (SPARC uses such vectors only when generating PIC.) */
2761 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
2764 ASM_GENERATE_INTERNAL_LABEL (label, "L", (VALUE)); \
2765 if (CASE_VECTOR_MODE == SImode) \
2766 fprintf (FILE, "\t.word\t"); \
2768 fprintf (FILE, "\t.xword\t"); \
2769 assemble_name (FILE, label); \
2770 ASM_GENERATE_INTERNAL_LABEL (label, "L", (REL)); \
2771 fputc ('-', FILE); \
2772 assemble_name (FILE, label); \
2773 fputc ('\n', FILE); \
2776 /* This is what to output before and after case-vector (both
2777 relative and absolute). If .subsection -1 works, we put case-vectors
2778 at the beginning of the current section. */
2780 #ifdef HAVE_GAS_SUBSECTION_ORDERING
2782 #define ASM_OUTPUT_ADDR_VEC_START(FILE) \
2783 fprintf(FILE, "\t.subsection\t-1\n")
2785 #define ASM_OUTPUT_ADDR_VEC_END(FILE) \
2786 fprintf(FILE, "\t.previous\n")
2790 /* This is how to output an assembler line
2791 that says to advance the location counter
2792 to a multiple of 2**LOG bytes. */
2794 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
2796 fprintf (FILE, "\t.align %d\n", (1<<(LOG)))
2798 /* This is how to output an assembler line that says to advance
2799 the location counter to a multiple of 2**LOG bytes using the
2800 "nop" instruction as padding. */
2801 #define ASM_OUTPUT_ALIGN_WITH_NOP(FILE,LOG) \
2803 fprintf (FILE, "\t.align %d,0x1000000\n", (1<<(LOG)))
2805 #define ASM_OUTPUT_SKIP(FILE,SIZE) \
2806 fprintf (FILE, "\t.skip "HOST_WIDE_INT_PRINT_UNSIGNED"\n", (SIZE))
2808 /* This says how to output an assembler line
2809 to define a global common symbol. */
2811 #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
2812 ( fputs ("\t.common ", (FILE)), \
2813 assemble_name ((FILE), (NAME)), \
2814 fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",\"bss\"\n", (SIZE)))
2816 /* This says how to output an assembler line to define a local common
2819 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGNED) \
2820 ( fputs ("\t.reserve ", (FILE)), \
2821 assemble_name ((FILE), (NAME)), \
2822 fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",\"bss\",%u\n", \
2823 (SIZE), ((ALIGNED) / BITS_PER_UNIT)))
2825 /* A C statement (sans semicolon) to output to the stdio stream
2826 FILE the assembler definition of uninitialized global DECL named
2827 NAME whose size is SIZE bytes and alignment is ALIGN bytes.
2828 Try to use asm_output_aligned_bss to implement this macro. */
2830 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
2832 ASM_OUTPUT_ALIGNED_LOCAL (FILE, NAME, SIZE, ALIGN); \
2835 #define IDENT_ASM_OP "\t.ident\t"
2837 /* Output #ident as a .ident. */
2839 #define ASM_OUTPUT_IDENT(FILE, NAME) \
2840 fprintf (FILE, "%s\"%s\"\n", IDENT_ASM_OP, NAME);
2842 #define PRINT_OPERAND_PUNCT_VALID_P(CHAR) \
2843 ((CHAR) == '#' || (CHAR) == '*' || (CHAR) == '^' || (CHAR) == '(' || (CHAR) == '_')
2845 /* Print operand X (an rtx) in assembler syntax to file FILE.
2846 CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified.
2847 For `%' followed by punctuation, CODE is the punctuation and X is null. */
2849 #define PRINT_OPERAND(FILE, X, CODE) print_operand (FILE, X, CODE)
2851 /* Print a memory address as an operand to reference that memory location. */
2853 #define PRINT_OPERAND_ADDRESS(FILE, ADDR) \
2854 { register rtx base, index = 0; \
2856 register rtx addr = ADDR; \
2857 if (GET_CODE (addr) == REG) \
2858 fputs (reg_names[REGNO (addr)], FILE); \
2859 else if (GET_CODE (addr) == PLUS) \
2861 if (GET_CODE (XEXP (addr, 0)) == CONST_INT) \
2862 offset = INTVAL (XEXP (addr, 0)), base = XEXP (addr, 1);\
2863 else if (GET_CODE (XEXP (addr, 1)) == CONST_INT) \
2864 offset = INTVAL (XEXP (addr, 1)), base = XEXP (addr, 0);\
2866 base = XEXP (addr, 0), index = XEXP (addr, 1); \
2867 if (GET_CODE (base) == LO_SUM) \
2869 if (! USE_AS_OFFSETABLE_LO10 \
2871 || TARGET_CM_MEDMID) \
2873 output_operand (XEXP (base, 0), 0); \
2874 fputs ("+%lo(", FILE); \
2875 output_address (XEXP (base, 1)); \
2876 fprintf (FILE, ")+%d", offset); \
2880 fputs (reg_names[REGNO (base)], FILE); \
2882 fprintf (FILE, "%+d", offset); \
2883 else if (GET_CODE (index) == REG) \
2884 fprintf (FILE, "+%s", reg_names[REGNO (index)]); \
2885 else if (GET_CODE (index) == SYMBOL_REF \
2886 || GET_CODE (index) == CONST) \
2887 fputc ('+', FILE), output_addr_const (FILE, index); \
2891 else if (GET_CODE (addr) == MINUS \
2892 && GET_CODE (XEXP (addr, 1)) == LABEL_REF) \
2894 output_addr_const (FILE, XEXP (addr, 0)); \
2895 fputs ("-(", FILE); \
2896 output_addr_const (FILE, XEXP (addr, 1)); \
2897 fputs ("-.)", FILE); \
2899 else if (GET_CODE (addr) == LO_SUM) \
2901 output_operand (XEXP (addr, 0), 0); \
2902 if (TARGET_CM_MEDMID) \
2903 fputs ("+%l44(", FILE); \
2905 fputs ("+%lo(", FILE); \
2906 output_address (XEXP (addr, 1)); \
2907 fputc (')', FILE); \
2909 else if (flag_pic && GET_CODE (addr) == CONST \
2910 && GET_CODE (XEXP (addr, 0)) == MINUS \
2911 && GET_CODE (XEXP (XEXP (addr, 0), 1)) == CONST \
2912 && GET_CODE (XEXP (XEXP (XEXP (addr, 0), 1), 0)) == MINUS \
2913 && XEXP (XEXP (XEXP (XEXP (addr, 0), 1), 0), 1) == pc_rtx) \
2915 addr = XEXP (addr, 0); \
2916 output_addr_const (FILE, XEXP (addr, 0)); \
2917 /* Group the args of the second CONST in parenthesis. */ \
2918 fputs ("-(", FILE); \
2919 /* Skip past the second CONST--it does nothing for us. */\
2920 output_addr_const (FILE, XEXP (XEXP (addr, 1), 0)); \
2921 /* Close the parenthesis. */ \
2922 fputc (')', FILE); \
2926 output_addr_const (FILE, addr); \
2930 /* Define the codes that are matched by predicates in sparc.c. */
2932 #define PREDICATE_CODES \
2933 {"reg_or_0_operand", {SUBREG, REG, CONST_INT, CONST_DOUBLE}}, \
2934 {"const1_operand", {CONST_INT}}, \
2935 {"fp_zero_operand", {CONST_DOUBLE}}, \
2936 {"fp_register_operand", {SUBREG, REG}}, \
2937 {"intreg_operand", {SUBREG, REG}}, \
2938 {"fcc_reg_operand", {REG}}, \
2939 {"fcc0_reg_operand", {REG}}, \
2940 {"icc_or_fcc_reg_operand", {REG}}, \
2941 {"restore_operand", {REG}}, \
2942 {"call_operand", {MEM}}, \
2943 {"call_operand_address", {SYMBOL_REF, LABEL_REF, CONST, CONST_DOUBLE, \
2944 ADDRESSOF, SUBREG, REG, PLUS, LO_SUM, CONST_INT}}, \
2945 {"symbolic_operand", {SYMBOL_REF, LABEL_REF, CONST}}, \
2946 {"symbolic_memory_operand", {SUBREG, MEM}}, \
2947 {"label_ref_operand", {LABEL_REF}}, \
2948 {"sp64_medium_pic_operand", {CONST}}, \
2949 {"data_segment_operand", {SYMBOL_REF, PLUS, CONST}}, \
2950 {"text_segment_operand", {LABEL_REF, SYMBOL_REF, PLUS, CONST}}, \
2951 {"reg_or_nonsymb_mem_operand", {SUBREG, REG, MEM}}, \
2952 {"splittable_symbolic_memory_operand", {MEM}}, \
2953 {"splittable_immediate_memory_operand", {MEM}}, \
2954 {"eq_or_neq", {EQ, NE}}, \
2955 {"normal_comp_operator", {GE, GT, LE, LT, GTU, LEU}}, \
2956 {"noov_compare_op", {NE, EQ, GE, GT, LE, LT, GEU, GTU, LEU, LTU}}, \
2957 {"noov_compare64_op", {NE, EQ, GE, GT, LE, LT, GEU, GTU, LEU, LTU}}, \
2958 {"v9_regcmp_op", {EQ, NE, GE, LT, LE, GT}}, \
2959 {"extend_op", {SIGN_EXTEND, ZERO_EXTEND}}, \
2960 {"cc_arithop", {AND, IOR, XOR}}, \
2961 {"cc_arithopn", {AND, IOR}}, \
2962 {"arith_operand", {SUBREG, REG, CONST_INT}}, \
2963 {"arith_add_operand", {SUBREG, REG, CONST_INT}}, \
2964 {"arith11_operand", {SUBREG, REG, CONST_INT}}, \
2965 {"arith10_operand", {SUBREG, REG, CONST_INT}}, \
2966 {"arith_double_operand", {SUBREG, REG, CONST_INT, CONST_DOUBLE}}, \
2967 {"arith_double_add_operand", {SUBREG, REG, CONST_INT, CONST_DOUBLE}}, \
2968 {"arith11_double_operand", {SUBREG, REG, CONST_INT, CONST_DOUBLE}}, \
2969 {"arith10_double_operand", {SUBREG, REG, CONST_INT, CONST_DOUBLE}}, \
2970 {"small_int", {CONST_INT}}, \
2971 {"small_int_or_double", {CONST_INT, CONST_DOUBLE}}, \
2972 {"uns_small_int", {CONST_INT}}, \
2973 {"uns_arith_operand", {SUBREG, REG, CONST_INT}}, \
2974 {"clobbered_register", {REG}}, \
2975 {"input_operand", {SUBREG, REG, CONST_INT, MEM, CONST}}, \
2976 {"const64_operand", {CONST_INT, CONST_DOUBLE}}, \
2977 {"const64_high_operand", {CONST_INT, CONST_DOUBLE}},
2979 /* The number of Pmode words for the setjmp buffer. */
2980 #define JMP_BUF_SIZE 12
2982 #define DONT_ACCESS_GBLS_AFTER_EPILOGUE (flag_pic)
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