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, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
4 Free Software Foundation, Inc.
5 Contributed by Michael Tiemann (tiemann@cygnus.com).
6 64-bit SPARC-V9 support by Michael Tiemann, Jim Wilson, and Doug Evans,
9 This file is part of GCC.
11 GCC is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3, or (at your option)
16 GCC is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with GCC; see the file COPYING3. If not see
23 <http://www.gnu.org/licenses/>. */
25 #include "config/vxworks-dummy.h"
27 /* Note that some other tm.h files include this one and then override
28 whatever definitions are necessary. */
30 /* Define the specific costs for a given cpu */
32 struct processor_costs
{
36 /* Integer signed load */
39 /* Integer zeroed load */
45 /* fmov, fneg, fabs */
49 const int float_plusminus
;
55 const int float_cmove
;
61 const int float_div_sf
;
64 const int float_div_df
;
67 const int float_sqrt_sf
;
70 const int float_sqrt_df
;
78 /* integer multiply cost for each bit set past the most
79 significant 3, so the formula for multiply cost becomes:
82 highest_bit = highest_clear_bit(rs1);
84 highest_bit = highest_set_bit(rs1);
87 cost = int_mul{,X} + ((highest_bit - 3) / int_mul_bit_factor);
89 A value of zero indicates that the multiply costs is fixed,
91 const int int_mul_bit_factor
;
102 /* penalty for shifts, due to scheduling rules etc. */
103 const int shift_penalty
;
106 extern const struct processor_costs
*sparc_costs
;
108 /* Target CPU builtins. FIXME: Defining sparc is for the benefit of
109 Solaris only; otherwise just define __sparc__. Sadly the headers
110 are such a mess there is no Solaris-specific header. */
111 #define TARGET_CPU_CPP_BUILTINS() \
114 builtin_define_std ("sparc"); \
117 builtin_assert ("cpu=sparc64"); \
118 builtin_assert ("machine=sparc64"); \
122 builtin_assert ("cpu=sparc"); \
123 builtin_assert ("machine=sparc"); \
128 /* Specify this in a cover file to provide bi-architecture (32/64) support. */
129 /* #define SPARC_BI_ARCH */
131 /* Macro used later in this file to determine default architecture. */
132 #define DEFAULT_ARCH32_P ((TARGET_DEFAULT & MASK_64BIT) == 0)
134 /* TARGET_ARCH{32,64} are the main macros to decide which of the two
135 architectures to compile for. We allow targets to choose compile time or
136 runtime selection. */
138 #if defined(__sparcv9) || defined(__arch64__)
139 #define TARGET_ARCH32 0
141 #define TARGET_ARCH32 1
145 #define TARGET_ARCH32 (! TARGET_64BIT)
147 #define TARGET_ARCH32 (DEFAULT_ARCH32_P)
148 #endif /* SPARC_BI_ARCH */
149 #endif /* IN_LIBGCC2 */
150 #define TARGET_ARCH64 (! TARGET_ARCH32)
152 /* Code model selection in 64-bit environment.
154 The machine mode used for addresses is 32-bit wide:
156 TARGET_CM_32: 32-bit address space.
157 It is the code model used when generating 32-bit code.
159 The machine mode used for addresses is 64-bit wide:
161 TARGET_CM_MEDLOW: 32-bit address space.
162 The executable must be in the low 32 bits of memory.
163 This avoids generating %uhi and %ulo terms. Programs
164 can be statically or dynamically linked.
166 TARGET_CM_MEDMID: 44-bit address space.
167 The executable must be in the low 44 bits of memory,
168 and the %[hml]44 terms are used. The text and data
169 segments have a maximum size of 2GB (31-bit span).
170 The maximum offset from any instruction to the label
171 _GLOBAL_OFFSET_TABLE_ is 2GB (31-bit span).
173 TARGET_CM_MEDANY: 64-bit address space.
174 The text and data segments have a maximum size of 2GB
175 (31-bit span) and may be located anywhere in memory.
176 The maximum offset from any instruction to the label
177 _GLOBAL_OFFSET_TABLE_ is 2GB (31-bit span).
179 TARGET_CM_EMBMEDANY: 64-bit address space.
180 The text and data segments have a maximum size of 2GB
181 (31-bit span) and may be located anywhere in memory.
182 The global register %g4 contains the start address of
183 the data segment. Programs are statically linked and
184 PIC is not supported.
186 Different code models are not supported in 32-bit environment. */
197 extern enum cmodel sparc_cmodel
;
199 /* V9 code model selection. */
200 #define TARGET_CM_MEDLOW (sparc_cmodel == CM_MEDLOW)
201 #define TARGET_CM_MEDMID (sparc_cmodel == CM_MEDMID)
202 #define TARGET_CM_MEDANY (sparc_cmodel == CM_MEDANY)
203 #define TARGET_CM_EMBMEDANY (sparc_cmodel == CM_EMBMEDANY)
205 #define SPARC_DEFAULT_CMODEL CM_32
207 /* The SPARC-V9 architecture defines a relaxed memory ordering model (RMO)
208 which requires the following macro to be true if enabled. Prior to V9,
209 there are no instructions to even talk about memory synchronization.
210 Note that the UltraSPARC III processors don't implement RMO, unlike the
211 UltraSPARC II processors. Niagara, Niagara-2, and Niagara-3 do not
212 implement RMO either.
214 Default to false; for example, Solaris never enables RMO, only ever uses
215 total memory ordering (TMO). */
216 #define SPARC_RELAXED_ORDERING false
218 /* Do not use the .note.GNU-stack convention by default. */
219 #define NEED_INDICATE_EXEC_STACK 0
221 /* This is call-clobbered in the normal ABI, but is reserved in the
222 home grown (aka upward compatible) embedded ABI. */
223 #define EMBMEDANY_BASE_REG "%g4"
225 /* Values of TARGET_CPU_DEFAULT, set via -D in the Makefile,
226 and specified by the user via --with-cpu=foo.
227 This specifies the cpu implementation, not the architecture size. */
228 /* Note that TARGET_CPU_v9 is assumed to start the list of 64-bit
230 #define TARGET_CPU_sparc 0
231 #define TARGET_CPU_v7 0 /* alias */
232 #define TARGET_CPU_cypress 0 /* alias */
233 #define TARGET_CPU_v8 1 /* generic v8 implementation */
234 #define TARGET_CPU_supersparc 2
235 #define TARGET_CPU_hypersparc 3
236 #define TARGET_CPU_leon 4
237 #define TARGET_CPU_sparclite 5
238 #define TARGET_CPU_f930 5 /* alias */
239 #define TARGET_CPU_f934 5 /* alias */
240 #define TARGET_CPU_sparclite86x 6
241 #define TARGET_CPU_sparclet 7
242 #define TARGET_CPU_tsc701 7 /* alias */
243 #define TARGET_CPU_v9 8 /* generic v9 implementation */
244 #define TARGET_CPU_sparcv9 8 /* alias */
245 #define TARGET_CPU_sparc64 8 /* alias */
246 #define TARGET_CPU_ultrasparc 9
247 #define TARGET_CPU_ultrasparc3 10
248 #define TARGET_CPU_niagara 11
249 #define TARGET_CPU_niagara2 12
250 #define TARGET_CPU_niagara3 13
251 #define TARGET_CPU_niagara4 14
253 #if TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
254 || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc \
255 || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc3 \
256 || TARGET_CPU_DEFAULT == TARGET_CPU_niagara \
257 || TARGET_CPU_DEFAULT == TARGET_CPU_niagara2 \
258 || TARGET_CPU_DEFAULT == TARGET_CPU_niagara3 \
259 || TARGET_CPU_DEFAULT == TARGET_CPU_niagara4
261 #define CPP_CPU32_DEFAULT_SPEC ""
262 #define ASM_CPU32_DEFAULT_SPEC ""
264 #if TARGET_CPU_DEFAULT == TARGET_CPU_v9
265 /* ??? What does Sun's CC pass? */
266 #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__"
267 /* ??? It's not clear how other assemblers will handle this, so by default
268 use GAS. Sun's Solaris assembler recognizes -xarch=v8plus, but this case
269 is handled in sol2.h. */
270 #define ASM_CPU64_DEFAULT_SPEC "-Av9"
272 #if TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc
273 #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__"
274 #define ASM_CPU64_DEFAULT_SPEC "-Av9a"
276 #if TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc3
277 #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__"
278 #define ASM_CPU64_DEFAULT_SPEC "-Av9b"
280 #if TARGET_CPU_DEFAULT == TARGET_CPU_niagara
281 #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__"
282 #define ASM_CPU64_DEFAULT_SPEC "-Av9b"
284 #if TARGET_CPU_DEFAULT == TARGET_CPU_niagara2
285 #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__"
286 #define ASM_CPU64_DEFAULT_SPEC "-Av9b"
288 #if TARGET_CPU_DEFAULT == TARGET_CPU_niagara3
289 #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__"
290 #define ASM_CPU64_DEFAULT_SPEC "-Av9" AS_NIAGARA3_FLAG
292 #if TARGET_CPU_DEFAULT == TARGET_CPU_niagara4
293 #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__"
294 #define ASM_CPU64_DEFAULT_SPEC "-Av9" AS_NIAGARA3_FLAG
299 #define CPP_CPU64_DEFAULT_SPEC ""
300 #define ASM_CPU64_DEFAULT_SPEC ""
302 #if TARGET_CPU_DEFAULT == TARGET_CPU_sparc \
303 || TARGET_CPU_DEFAULT == TARGET_CPU_v8
304 #define CPP_CPU32_DEFAULT_SPEC ""
305 #define ASM_CPU32_DEFAULT_SPEC ""
308 #if TARGET_CPU_DEFAULT == TARGET_CPU_sparclet
309 #define CPP_CPU32_DEFAULT_SPEC "-D__sparclet__"
310 #define ASM_CPU32_DEFAULT_SPEC "-Asparclet"
313 #if TARGET_CPU_DEFAULT == TARGET_CPU_sparclite
314 #define CPP_CPU32_DEFAULT_SPEC "-D__sparclite__"
315 #define ASM_CPU32_DEFAULT_SPEC "-Asparclite"
318 #if TARGET_CPU_DEFAULT == TARGET_CPU_sparclite86x
319 #define CPP_CPU32_DEFAULT_SPEC "-D__sparclite86x__"
320 #define ASM_CPU32_DEFAULT_SPEC "-Asparclite"
323 #if TARGET_CPU_DEFAULT == TARGET_CPU_supersparc
324 #define CPP_CPU32_DEFAULT_SPEC "-D__supersparc__ -D__sparc_v8__"
325 #define ASM_CPU32_DEFAULT_SPEC ""
328 #if TARGET_CPU_DEFAULT == TARGET_CPU_hypersparc
329 #define CPP_CPU32_DEFAULT_SPEC "-D__hypersparc__ -D__sparc_v8__"
330 #define ASM_CPU32_DEFAULT_SPEC ""
333 #if TARGET_CPU_DEFAULT == TARGET_CPU_leon
334 #define CPP_CPU32_DEFAULT_SPEC "-D__leon__ -D__sparc_v8__"
335 #define ASM_CPU32_DEFAULT_SPEC ""
340 #if !defined(CPP_CPU32_DEFAULT_SPEC) || !defined(CPP_CPU64_DEFAULT_SPEC)
341 #error Unrecognized value in TARGET_CPU_DEFAULT.
346 #define CPP_CPU_DEFAULT_SPEC \
347 (DEFAULT_ARCH32_P ? "\
348 %{m64:" CPP_CPU64_DEFAULT_SPEC "} \
349 %{!m64:" CPP_CPU32_DEFAULT_SPEC "} \
351 %{m32:" CPP_CPU32_DEFAULT_SPEC "} \
352 %{!m32:" CPP_CPU64_DEFAULT_SPEC "} \
354 #define ASM_CPU_DEFAULT_SPEC \
355 (DEFAULT_ARCH32_P ? "\
356 %{m64:" ASM_CPU64_DEFAULT_SPEC "} \
357 %{!m64:" ASM_CPU32_DEFAULT_SPEC "} \
359 %{m32:" ASM_CPU32_DEFAULT_SPEC "} \
360 %{!m32:" ASM_CPU64_DEFAULT_SPEC "} \
363 #else /* !SPARC_BI_ARCH */
365 #define CPP_CPU_DEFAULT_SPEC (DEFAULT_ARCH32_P ? CPP_CPU32_DEFAULT_SPEC : CPP_CPU64_DEFAULT_SPEC)
366 #define ASM_CPU_DEFAULT_SPEC (DEFAULT_ARCH32_P ? ASM_CPU32_DEFAULT_SPEC : ASM_CPU64_DEFAULT_SPEC)
368 #endif /* !SPARC_BI_ARCH */
370 /* Define macros to distinguish architectures. */
372 /* Common CPP definitions used by CPP_SPEC amongst the various targets
373 for handling -mcpu=xxx switches. */
374 #define CPP_CPU_SPEC "\
375 %{mcpu=sparclet:-D__sparclet__} %{mcpu=tsc701:-D__sparclet__} \
376 %{mcpu=sparclite:-D__sparclite__} \
377 %{mcpu=f930:-D__sparclite__} %{mcpu=f934:-D__sparclite__} \
378 %{mcpu=sparclite86x:-D__sparclite86x__} \
379 %{mcpu=v8:-D__sparc_v8__} \
380 %{mcpu=supersparc:-D__supersparc__ -D__sparc_v8__} \
381 %{mcpu=hypersparc:-D__hypersparc__ -D__sparc_v8__} \
382 %{mcpu=leon:-D__leon__ -D__sparc_v8__} \
383 %{mcpu=v9:-D__sparc_v9__} \
384 %{mcpu=ultrasparc:-D__sparc_v9__} \
385 %{mcpu=ultrasparc3:-D__sparc_v9__} \
386 %{mcpu=niagara:-D__sparc_v9__} \
387 %{mcpu=niagara2:-D__sparc_v9__} \
388 %{mcpu=niagara3:-D__sparc_v9__} \
389 %{mcpu=niagara4:-D__sparc_v9__} \
390 %{!mcpu*:%(cpp_cpu_default)} \
392 #define CPP_ARCH32_SPEC ""
393 #define CPP_ARCH64_SPEC "-D__arch64__"
395 #define CPP_ARCH_DEFAULT_SPEC \
396 (DEFAULT_ARCH32_P ? CPP_ARCH32_SPEC : CPP_ARCH64_SPEC)
398 #define CPP_ARCH_SPEC "\
399 %{m32:%(cpp_arch32)} \
400 %{m64:%(cpp_arch64)} \
401 %{!m32:%{!m64:%(cpp_arch_default)}} \
404 /* Macros to distinguish the endianness, window model and FP support. */
405 #define CPP_OTHER_SPEC "\
406 %{mlittle-endian:-D__LITTLE_ENDIAN__} \
408 %{msoft-float:-D_SOFT_FLOAT} \
411 /* Macros to distinguish the particular subtarget. */
412 #define CPP_SUBTARGET_SPEC ""
415 "%(cpp_cpu) %(cpp_arch) %(cpp_endian) %(cpp_other) %(cpp_subtarget)"
417 /* This used to translate -dalign to -malign, but that is no good
418 because it can't turn off the usual meaning of making debugging dumps. */
422 /* Override in target specific files. */
423 #define ASM_CPU_SPEC "\
424 %{mcpu=sparclet:-Asparclet} %{mcpu=tsc701:-Asparclet} \
425 %{mcpu=sparclite:-Asparclite} \
426 %{mcpu=sparclite86x:-Asparclite} \
427 %{mcpu=f930:-Asparclite} %{mcpu=f934:-Asparclite} \
428 %{mv8plus:-Av8plus} \
430 %{mcpu=ultrasparc:%{!mv8plus:-Av9a}} \
431 %{mcpu=ultrasparc3:%{!mv8plus:-Av9b}} \
432 %{mcpu=niagara:%{!mv8plus:-Av9b}} \
433 %{mcpu=niagara2:%{!mv8plus:-Av9b}} \
434 %{mcpu=niagara3:%{!mv8plus:-Av9" AS_NIAGARA3_FLAG "}} \
435 %{mcpu=niagara4:%{!mv8plus:-Av9" AS_NIAGARA3_FLAG "}} \
436 %{!mcpu*:%(asm_cpu_default)} \
439 /* Word size selection, among other things.
440 This is what GAS uses. Add %(asm_arch) to ASM_SPEC to enable. */
442 #define ASM_ARCH32_SPEC "-32"
443 #ifdef HAVE_AS_REGISTER_PSEUDO_OP
444 #define ASM_ARCH64_SPEC "-64 -no-undeclared-regs"
446 #define ASM_ARCH64_SPEC "-64"
448 #define ASM_ARCH_DEFAULT_SPEC \
449 (DEFAULT_ARCH32_P ? ASM_ARCH32_SPEC : ASM_ARCH64_SPEC)
451 #define ASM_ARCH_SPEC "\
452 %{m32:%(asm_arch32)} \
453 %{m64:%(asm_arch64)} \
454 %{!m32:%{!m64:%(asm_arch_default)}} \
457 #ifdef HAVE_AS_RELAX_OPTION
458 #define ASM_RELAX_SPEC "%{!mno-relax:-relax}"
460 #define ASM_RELAX_SPEC ""
463 /* Special flags to the Sun-4 assembler when using pipe for input. */
466 %{!pg:%{!p:%{fpic|fPIC|fpie|fPIE:-k}}} %{keep-local-as-symbols:-L} \
467 %(asm_cpu) %(asm_relax)"
469 /* This macro defines names of additional specifications to put in the specs
470 that can be used in various specifications like CC1_SPEC. Its definition
471 is an initializer with a subgrouping for each command option.
473 Each subgrouping contains a string constant, that defines the
474 specification name, and a string constant that used by the GCC driver
477 Do not define this macro if it does not need to do anything. */
479 #define EXTRA_SPECS \
480 { "cpp_cpu", CPP_CPU_SPEC }, \
481 { "cpp_cpu_default", CPP_CPU_DEFAULT_SPEC }, \
482 { "cpp_arch32", CPP_ARCH32_SPEC }, \
483 { "cpp_arch64", CPP_ARCH64_SPEC }, \
484 { "cpp_arch_default", CPP_ARCH_DEFAULT_SPEC },\
485 { "cpp_arch", CPP_ARCH_SPEC }, \
486 { "cpp_other", CPP_OTHER_SPEC }, \
487 { "cpp_subtarget", CPP_SUBTARGET_SPEC }, \
488 { "asm_cpu", ASM_CPU_SPEC }, \
489 { "asm_cpu_default", ASM_CPU_DEFAULT_SPEC }, \
490 { "asm_arch32", ASM_ARCH32_SPEC }, \
491 { "asm_arch64", ASM_ARCH64_SPEC }, \
492 { "asm_relax", ASM_RELAX_SPEC }, \
493 { "asm_arch_default", ASM_ARCH_DEFAULT_SPEC },\
494 { "asm_arch", ASM_ARCH_SPEC }, \
495 SUBTARGET_EXTRA_SPECS
497 #define SUBTARGET_EXTRA_SPECS
499 /* Because libgcc can generate references back to libc (via .umul etc.) we have
500 to list libc again after the second libgcc. */
501 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G %L"
504 #define PTRDIFF_TYPE (TARGET_ARCH64 ? "long int" : "int")
505 #define SIZE_TYPE (TARGET_ARCH64 ? "long unsigned int" : "unsigned int")
507 /* ??? This should be 32 bits for v9 but what can we do? */
508 #define WCHAR_TYPE "short unsigned int"
509 #define WCHAR_TYPE_SIZE 16
511 /* Mask of all CPU selection flags. */
513 (MASK_V8 + MASK_SPARCLITE + MASK_SPARCLET + MASK_V9 + MASK_DEPRECATED_V8_INSNS)
515 /* TARGET_HARD_MUL: Use hardware multiply instructions but not %y.
516 TARGET_HARD_MUL32: Use hardware multiply instructions with rd %y
517 to get high 32 bits. False in V8+ or V9 because multiply stores
518 a 64-bit result in a register. */
520 #define TARGET_HARD_MUL32 \
521 ((TARGET_V8 || TARGET_SPARCLITE \
522 || TARGET_SPARCLET || TARGET_DEPRECATED_V8_INSNS) \
523 && ! TARGET_V8PLUS && TARGET_ARCH32)
525 #define TARGET_HARD_MUL \
526 (TARGET_V8 || TARGET_SPARCLITE || TARGET_SPARCLET \
527 || TARGET_DEPRECATED_V8_INSNS || TARGET_V8PLUS)
529 /* MASK_APP_REGS must always be the default because that's what
530 FIXED_REGISTERS is set to and -ffixed- is processed before
531 TARGET_CONDITIONAL_REGISTER_USAGE is called (where we process
533 #define TARGET_DEFAULT (MASK_APP_REGS + MASK_FPU)
535 /* Recast the cpu class to be the cpu attribute.
536 Every file includes us, but not every file includes insn-attr.h. */
537 #define sparc_cpu_attr ((enum attr_cpu) sparc_cpu)
539 /* Support for a compile-time default CPU, et cetera. The rules are:
540 --with-cpu is ignored if -mcpu is specified.
541 --with-tune is ignored if -mtune is specified.
542 --with-float is ignored if -mhard-float, -msoft-float, -mfpu, or -mno-fpu
544 #define OPTION_DEFAULT_SPECS \
545 {"cpu", "%{!mcpu=*:-mcpu=%(VALUE)}" }, \
546 {"tune", "%{!mtune=*:-mtune=%(VALUE)}" }, \
547 {"float", "%{!msoft-float:%{!mhard-float:%{!mfpu:%{!mno-fpu:-m%(VALUE)-float}}}}" }
549 /* target machine storage layout */
551 /* Define this if most significant bit is lowest numbered
552 in instructions that operate on numbered bit-fields. */
553 #define BITS_BIG_ENDIAN 1
555 /* Define this if most significant byte of a word is the lowest numbered. */
556 #define BYTES_BIG_ENDIAN 1
558 /* Define this if most significant word of a multiword number is the lowest
560 #define WORDS_BIG_ENDIAN 1
562 #define MAX_BITS_PER_WORD 64
564 /* Width of a word, in units (bytes). */
565 #define UNITS_PER_WORD (TARGET_ARCH64 ? 8 : 4)
567 #define MIN_UNITS_PER_WORD UNITS_PER_WORD
569 #define MIN_UNITS_PER_WORD 4
572 /* Now define the sizes of the C data types. */
574 #define SHORT_TYPE_SIZE 16
575 #define INT_TYPE_SIZE 32
576 #define LONG_TYPE_SIZE (TARGET_ARCH64 ? 64 : 32)
577 #define LONG_LONG_TYPE_SIZE 64
578 #define FLOAT_TYPE_SIZE 32
579 #define DOUBLE_TYPE_SIZE 64
581 /* LONG_DOUBLE_TYPE_SIZE is defined per OS even though the
582 SPARC ABI says that it is 128-bit wide. */
583 /* #define LONG_DOUBLE_TYPE_SIZE 128 */
585 /* The widest floating-point format really supported by the hardware. */
586 #define WIDEST_HARDWARE_FP_SIZE 64
588 /* Width in bits of a pointer. This is the size of ptr_mode. */
589 #define POINTER_SIZE (TARGET_PTR64 ? 64 : 32)
591 /* This is the machine mode used for addresses. */
592 #define Pmode (TARGET_ARCH64 ? DImode : SImode)
594 /* If we have to extend pointers (only when TARGET_ARCH64 and not
595 TARGET_PTR64), we want to do it unsigned. This macro does nothing
596 if ptr_mode and Pmode are the same. */
597 #define POINTERS_EXTEND_UNSIGNED 1
599 /* Allocation boundary (in *bits*) for storing arguments in argument list. */
600 #define PARM_BOUNDARY (TARGET_ARCH64 ? 64 : 32)
602 /* Boundary (in *bits*) on which stack pointer should be aligned. */
603 /* FIXME, this is wrong when TARGET_ARCH64 and TARGET_STACK_BIAS, because
604 then %sp+2047 is 128-bit aligned so %sp is really only byte-aligned. */
605 #define STACK_BOUNDARY (TARGET_ARCH64 ? 128 : 64)
606 /* Temporary hack until the FIXME above is fixed. */
607 #define SPARC_STACK_BOUNDARY_HACK (TARGET_ARCH64 && TARGET_STACK_BIAS)
609 /* ALIGN FRAMES on double word boundaries */
611 #define SPARC_STACK_ALIGN(LOC) \
612 (TARGET_ARCH64 ? (((LOC)+15) & ~15) : (((LOC)+7) & ~7))
614 /* Allocation boundary (in *bits*) for the code of a function. */
615 #define FUNCTION_BOUNDARY 32
617 /* Alignment of field after `int : 0' in a structure. */
618 #define EMPTY_FIELD_BOUNDARY (TARGET_ARCH64 ? 64 : 32)
620 /* Every structure's size must be a multiple of this. */
621 #define STRUCTURE_SIZE_BOUNDARY 8
623 /* A bit-field declared as `int' forces `int' alignment for the struct. */
624 #define PCC_BITFIELD_TYPE_MATTERS 1
626 /* No data type wants to be aligned rounder than this. */
627 #define BIGGEST_ALIGNMENT (TARGET_ARCH64 ? 128 : 64)
629 /* The best alignment to use in cases where we have a choice. */
630 #define FASTEST_ALIGNMENT 64
632 /* Define this macro as an expression for the alignment of a structure
633 (given by STRUCT as a tree node) if the alignment computed in the
634 usual way is COMPUTED and the alignment explicitly specified was
637 The default is to use SPECIFIED if it is larger; otherwise, use
638 the smaller of COMPUTED and `BIGGEST_ALIGNMENT' */
639 #define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \
640 (TARGET_FASTER_STRUCTS ? \
641 ((TREE_CODE (STRUCT) == RECORD_TYPE \
642 || TREE_CODE (STRUCT) == UNION_TYPE \
643 || TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \
644 && TYPE_FIELDS (STRUCT) != 0 \
645 ? MAX (MAX ((COMPUTED), (SPECIFIED)), BIGGEST_ALIGNMENT) \
646 : MAX ((COMPUTED), (SPECIFIED))) \
647 : MAX ((COMPUTED), (SPECIFIED)))
649 /* We need 2 words, so we can save the stack pointer and the return register
650 of the function containing a non-local goto target. */
651 #define STACK_SAVEAREA_MODE(LEVEL) \
652 ((LEVEL) == SAVE_NONLOCAL ? (TARGET_ARCH64 ? TImode : DImode) : Pmode)
654 /* Make strings word-aligned so strcpy from constants will be faster. */
655 #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
656 ((TREE_CODE (EXP) == STRING_CST \
657 && (ALIGN) < FASTEST_ALIGNMENT) \
658 ? FASTEST_ALIGNMENT : (ALIGN))
660 /* Make arrays of chars word-aligned for the same reasons. */
661 #define DATA_ALIGNMENT(TYPE, ALIGN) \
662 (TREE_CODE (TYPE) == ARRAY_TYPE \
663 && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \
664 && (ALIGN) < FASTEST_ALIGNMENT ? FASTEST_ALIGNMENT : (ALIGN))
666 /* Make local arrays of chars word-aligned for the same reasons. */
667 #define LOCAL_ALIGNMENT(TYPE, ALIGN) DATA_ALIGNMENT (TYPE, ALIGN)
669 /* Set this nonzero if move instructions will actually fail to work
670 when given unaligned data. */
671 #define STRICT_ALIGNMENT 1
673 /* Things that must be doubleword aligned cannot go in the text section,
674 because the linker fails to align the text section enough!
675 Put them in the data section. This macro is only used in this file. */
676 #define MAX_TEXT_ALIGN 32
678 /* Standard register usage. */
680 /* Number of actual hardware registers.
681 The hardware registers are assigned numbers for the compiler
682 from 0 to just below FIRST_PSEUDO_REGISTER.
683 All registers that the compiler knows about must be given numbers,
684 even those that are not normally considered general registers.
686 SPARC has 32 integer registers and 32 floating point registers.
687 64-bit SPARC has 32 additional fp regs, but the odd numbered ones are not
688 accessible. We still account for them to simplify register computations
689 (e.g.: in CLASS_MAX_NREGS). There are also 4 fp condition code registers, so
691 Register 100 is used as the integer condition code register.
692 Register 101 is used as the soft frame pointer register. */
694 #define FIRST_PSEUDO_REGISTER 103
696 #define SPARC_FIRST_FP_REG 32
697 /* Additional V9 fp regs. */
698 #define SPARC_FIRST_V9_FP_REG 64
699 #define SPARC_LAST_V9_FP_REG 95
700 /* V9 %fcc[0123]. V8 uses (figuratively) %fcc0. */
701 #define SPARC_FIRST_V9_FCC_REG 96
702 #define SPARC_LAST_V9_FCC_REG 99
704 #define SPARC_FCC_REG 96
705 /* Integer CC reg. We don't distinguish %icc from %xcc. */
706 #define SPARC_ICC_REG 100
707 #define SPARC_GSR_REG 102
709 /* Nonzero if REGNO is an fp reg. */
710 #define SPARC_FP_REG_P(REGNO) \
711 ((REGNO) >= SPARC_FIRST_FP_REG && (REGNO) <= SPARC_LAST_V9_FP_REG)
713 /* Argument passing regs. */
714 #define SPARC_OUTGOING_INT_ARG_FIRST 8
715 #define SPARC_INCOMING_INT_ARG_FIRST (TARGET_FLAT ? 8 : 24)
716 #define SPARC_FP_ARG_FIRST 32
718 /* 1 for registers that have pervasive standard uses
719 and are not available for the register allocator.
722 g1 is free to use as temporary.
723 g2-g4 are reserved for applications. Gcc normally uses them as
724 temporaries, but this can be disabled via the -mno-app-regs option.
725 g5 through g7 are reserved for the operating system.
728 g1,g5 are free to use as temporaries, and are free to use between calls
729 if the call is to an external function via the PLT.
730 g4 is free to use as a temporary in the non-embedded case.
731 g4 is reserved in the embedded case.
732 g2-g3 are reserved for applications. Gcc normally uses them as
733 temporaries, but this can be disabled via the -mno-app-regs option.
734 g6-g7 are reserved for the operating system (or application in
736 ??? Register 1 is used as a temporary by the 64 bit sethi pattern, so must
737 currently be a fixed register until this pattern is rewritten.
738 Register 1 is also used when restoring call-preserved registers in large
741 Registers fixed in arch32 and not arch64 (or vice-versa) are marked in
742 TARGET_CONDITIONAL_REGISTER_USAGE in order to properly handle -ffixed-.
745 #define FIXED_REGISTERS \
746 {1, 0, 2, 2, 2, 2, 1, 1, \
747 0, 0, 0, 0, 0, 0, 1, 0, \
748 0, 0, 0, 0, 0, 0, 0, 0, \
749 0, 0, 0, 0, 0, 0, 0, 1, \
751 0, 0, 0, 0, 0, 0, 0, 0, \
752 0, 0, 0, 0, 0, 0, 0, 0, \
753 0, 0, 0, 0, 0, 0, 0, 0, \
754 0, 0, 0, 0, 0, 0, 0, 0, \
756 0, 0, 0, 0, 0, 0, 0, 0, \
757 0, 0, 0, 0, 0, 0, 0, 0, \
758 0, 0, 0, 0, 0, 0, 0, 0, \
759 0, 0, 0, 0, 0, 0, 0, 0, \
763 /* 1 for registers not available across function calls.
764 These must include the FIXED_REGISTERS and also any
765 registers that can be used without being saved.
766 The latter must include the registers where values are returned
767 and the register where structure-value addresses are passed.
768 Aside from that, you can include as many other registers as you like. */
770 #define CALL_USED_REGISTERS \
771 {1, 1, 1, 1, 1, 1, 1, 1, \
772 1, 1, 1, 1, 1, 1, 1, 1, \
773 0, 0, 0, 0, 0, 0, 0, 0, \
774 0, 0, 0, 0, 0, 0, 0, 1, \
776 1, 1, 1, 1, 1, 1, 1, 1, \
777 1, 1, 1, 1, 1, 1, 1, 1, \
778 1, 1, 1, 1, 1, 1, 1, 1, \
779 1, 1, 1, 1, 1, 1, 1, 1, \
781 1, 1, 1, 1, 1, 1, 1, 1, \
782 1, 1, 1, 1, 1, 1, 1, 1, \
783 1, 1, 1, 1, 1, 1, 1, 1, \
784 1, 1, 1, 1, 1, 1, 1, 1, \
788 /* Return number of consecutive hard regs needed starting at reg REGNO
789 to hold something of mode MODE.
790 This is ordinarily the length in words of a value of mode MODE
791 but can be less for certain modes in special long registers.
793 On SPARC, ordinary registers hold 32 bits worth;
794 this means both integer and floating point registers.
795 On v9, integer regs hold 64 bits worth; floating point regs hold
796 32 bits worth (this includes the new fp regs as even the odd ones are
797 included in the hard register count). */
799 #define HARD_REGNO_NREGS(REGNO, MODE) \
800 ((REGNO) == SPARC_GSR_REG ? 1 : \
802 ? ((REGNO) < 32 || (REGNO) == FRAME_POINTER_REGNUM \
803 ? (GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD \
804 : (GET_MODE_SIZE (MODE) + 3) / 4) \
805 : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)))
807 /* Due to the ARCH64 discrepancy above we must override this next
809 #define REGMODE_NATURAL_SIZE(MODE) \
810 ((TARGET_ARCH64 && FLOAT_MODE_P (MODE)) ? 4 : UNITS_PER_WORD)
812 /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
813 See sparc.c for how we initialize this. */
814 extern const int *hard_regno_mode_classes
;
815 extern int sparc_mode_class
[];
817 /* ??? Because of the funny way we pass parameters we should allow certain
818 ??? types of float/complex values to be in integer registers during
819 ??? RTL generation. This only matters on arch32. */
820 #define HARD_REGNO_MODE_OK(REGNO, MODE) \
821 ((hard_regno_mode_classes[REGNO] & sparc_mode_class[MODE]) != 0)
823 /* Value is 1 if it is OK to rename a hard register FROM to another hard
824 register TO. We cannot rename %g1 as it may be used before the save
825 register window instruction in the prologue. */
826 #define HARD_REGNO_RENAME_OK(FROM, TO) ((FROM) != 1)
828 /* Value is 1 if it is a good idea to tie two pseudo registers
829 when one has mode MODE1 and one has mode MODE2.
830 If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
831 for any hard reg, then this must be 0 for correct output.
833 For V9: SFmode can't be combined with other float modes, because they can't
834 be allocated to the %d registers. Also, DFmode won't fit in odd %f
835 registers, but SFmode will. */
836 #define MODES_TIEABLE_P(MODE1, MODE2) \
837 ((MODE1) == (MODE2) \
838 || (GET_MODE_CLASS (MODE1) == GET_MODE_CLASS (MODE2) \
840 || (GET_MODE_CLASS (MODE1) != MODE_FLOAT \
841 || (MODE1 != SFmode && MODE2 != SFmode)))))
843 /* Specify the registers used for certain standard purposes.
844 The values of these macros are register numbers. */
846 /* Register to use for pushing function arguments. */
847 #define STACK_POINTER_REGNUM 14
849 /* The stack bias (amount by which the hardware register is offset by). */
850 #define SPARC_STACK_BIAS ((TARGET_ARCH64 && TARGET_STACK_BIAS) ? 2047 : 0)
852 /* Actual top-of-stack address is 92/176 greater than the contents of the
853 stack pointer register for !v9/v9. That is:
854 - !v9: 64 bytes for the in and local registers, 4 bytes for structure return
855 address, and 6*4 bytes for the 6 register parameters.
856 - v9: 128 bytes for the in and local registers + 6*8 bytes for the integer
858 #define STACK_POINTER_OFFSET (FIRST_PARM_OFFSET(0) + SPARC_STACK_BIAS)
860 /* Base register for access to local variables of the function. */
861 #define HARD_FRAME_POINTER_REGNUM 30
863 /* The soft frame pointer does not have the stack bias applied. */
864 #define FRAME_POINTER_REGNUM 101
866 /* Given the stack bias, the stack pointer isn't actually aligned. */
867 #define INIT_EXPANDERS \
869 if (crtl->emit.regno_pointer_align && SPARC_STACK_BIAS) \
871 REGNO_POINTER_ALIGN (STACK_POINTER_REGNUM) = BITS_PER_UNIT; \
872 REGNO_POINTER_ALIGN (HARD_FRAME_POINTER_REGNUM) = BITS_PER_UNIT; \
876 /* Base register for access to arguments of the function. */
877 #define ARG_POINTER_REGNUM FRAME_POINTER_REGNUM
879 /* Register in which static-chain is passed to a function. This must
880 not be a register used by the prologue. */
881 #define STATIC_CHAIN_REGNUM (TARGET_ARCH64 ? 5 : 2)
883 /* Register which holds the global offset table, if any. */
885 #define GLOBAL_OFFSET_TABLE_REGNUM 23
887 /* Register which holds offset table for position-independent
890 #define PIC_OFFSET_TABLE_REGNUM \
891 (flag_pic ? GLOBAL_OFFSET_TABLE_REGNUM : INVALID_REGNUM)
893 /* Pick a default value we can notice from override_options:
896 Originally it was -1, but later on the container of options changed to
897 unsigned byte, so we decided to pick 127 as default value, which does
898 reflect an undefined default value in case of 0/1. */
900 #define DEFAULT_PCC_STRUCT_RETURN 127
902 /* Functions which return large structures get the address
903 to place the wanted value at offset 64 from the frame.
904 Must reserve 64 bytes for the in and local registers.
905 v9: Functions which return large structures get the address to place the
906 wanted value from an invisible first argument. */
907 #define STRUCT_VALUE_OFFSET 64
909 /* Define the classes of registers for register constraints in the
910 machine description. Also define ranges of constants.
912 One of the classes must always be named ALL_REGS and include all hard regs.
913 If there is more than one class, another class must be named NO_REGS
914 and contain no registers.
916 The name GENERAL_REGS must be the name of a class (or an alias for
917 another name such as ALL_REGS). This is the class of registers
918 that is allowed by "g" or "r" in a register constraint.
919 Also, registers outside this class are allocated only when
920 instructions express preferences for them.
922 The classes must be numbered in nondecreasing order; that is,
923 a larger-numbered class must never be contained completely
924 in a smaller-numbered class.
926 For any two classes, it is very desirable that there be another
927 class that represents their union. */
929 /* The SPARC has various kinds of registers: general, floating point,
930 and condition codes [well, it has others as well, but none that we
931 care directly about].
933 For v9 we must distinguish between the upper and lower floating point
934 registers because the upper ones can't hold SFmode values.
935 HARD_REGNO_MODE_OK won't help here because reload assumes that register(s)
936 satisfying a group need for a class will also satisfy a single need for
937 that class. EXTRA_FP_REGS is a bit of a misnomer as it covers all 64 fp
940 It is important that one class contains all the general and all the standard
941 fp regs. Otherwise find_reg() won't properly allocate int regs for moves,
942 because reg_class_record() will bias the selection in favor of fp regs,
943 because reg_class_subunion[GENERAL_REGS][FP_REGS] will yield FP_REGS,
944 because FP_REGS > GENERAL_REGS.
946 It is also important that one class contain all the general and all
947 the fp regs. Otherwise when spilling a DFmode reg, it may be from
948 EXTRA_FP_REGS but find_reloads() may use class
949 GENERAL_OR_FP_REGS. This will cause allocate_reload_reg() to die
950 because the compiler thinks it doesn't have a spill reg when in
953 v9 also has 4 floating point condition code registers. Since we don't
954 have a class that is the union of FPCC_REGS with either of the others,
955 it is important that it appear first. Otherwise the compiler will die
956 trying to compile _fixunsdfsi because fix_truncdfsi2 won't match its
959 It is important that SPARC_ICC_REG have class NO_REGS. Otherwise combine
960 may try to use it to hold an SImode value. See register_operand.
961 ??? Should %fcc[0123] be handled similarly?
964 enum reg_class
{ NO_REGS
, FPCC_REGS
, I64_REGS
, GENERAL_REGS
, FP_REGS
,
965 EXTRA_FP_REGS
, GENERAL_OR_FP_REGS
, GENERAL_OR_EXTRA_FP_REGS
,
966 ALL_REGS
, LIM_REG_CLASSES
};
968 #define N_REG_CLASSES (int) LIM_REG_CLASSES
970 /* Give names of register classes as strings for dump file. */
972 #define REG_CLASS_NAMES \
973 { "NO_REGS", "FPCC_REGS", "I64_REGS", "GENERAL_REGS", "FP_REGS", \
974 "EXTRA_FP_REGS", "GENERAL_OR_FP_REGS", "GENERAL_OR_EXTRA_FP_REGS", \
977 /* Define which registers fit in which classes.
978 This is an initializer for a vector of HARD_REG_SET
979 of length N_REG_CLASSES. */
981 #define REG_CLASS_CONTENTS \
982 {{0, 0, 0, 0}, /* NO_REGS */ \
983 {0, 0, 0, 0xf}, /* FPCC_REGS */ \
984 {0xffff, 0, 0, 0}, /* I64_REGS */ \
985 {-1, 0, 0, 0x20}, /* GENERAL_REGS */ \
986 {0, -1, 0, 0}, /* FP_REGS */ \
987 {0, -1, -1, 0}, /* EXTRA_FP_REGS */ \
988 {-1, -1, 0, 0x20}, /* GENERAL_OR_FP_REGS */ \
989 {-1, -1, -1, 0x20}, /* GENERAL_OR_EXTRA_FP_REGS */ \
990 {-1, -1, -1, 0x7f}} /* ALL_REGS */
992 /* The same information, inverted:
993 Return the class number of the smallest class containing
994 reg number REGNO. This could be a conditional expression
995 or could index an array. */
997 extern enum reg_class sparc_regno_reg_class
[FIRST_PSEUDO_REGISTER
];
999 #define REGNO_REG_CLASS(REGNO) sparc_regno_reg_class[(REGNO)]
1001 /* Defines invalid mode changes. Borrowed from pa64-regs.h.
1003 SImode loads to floating-point registers are not zero-extended.
1004 The definition for LOAD_EXTEND_OP specifies that integer loads
1005 narrower than BITS_PER_WORD will be zero-extended. As a result,
1006 we inhibit changes from SImode unless they are to a mode that is
1007 identical in size. */
1009 #define CANNOT_CHANGE_MODE_CLASS(FROM, TO, CLASS) \
1011 && (FROM) == SImode \
1012 && GET_MODE_SIZE (FROM) != GET_MODE_SIZE (TO) \
1013 ? reg_classes_intersect_p (CLASS, FP_REGS) : 0)
1015 /* This is the order in which to allocate registers normally.
1017 We put %f0-%f7 last among the float registers, so as to make it more
1018 likely that a pseudo-register which dies in the float return register
1019 area will get allocated to the float return register, thus saving a move
1020 instruction at the end of the function.
1022 Similarly for integer return value registers.
1024 We know in this case that we will not end up with a leaf function.
1026 The register allocator is given the global and out registers first
1027 because these registers are call clobbered and thus less useful to
1028 global register allocation.
1030 Next we list the local and in registers. They are not call clobbered
1031 and thus very useful for global register allocation. We list the input
1032 registers before the locals so that it is more likely the incoming
1033 arguments received in those registers can just stay there and not be
1036 #define REG_ALLOC_ORDER \
1037 { 1, 2, 3, 4, 5, 6, 7, /* %g1-%g7 */ \
1038 13, 12, 11, 10, 9, 8, /* %o5-%o0 */ \
1040 16, 17, 18, 19, 20, 21, 22, 23, /* %l0-%l7 */ \
1041 29, 28, 27, 26, 25, 24, 31, /* %i5-%i0,%i7 */\
1042 40, 41, 42, 43, 44, 45, 46, 47, /* %f8-%f15 */ \
1043 48, 49, 50, 51, 52, 53, 54, 55, /* %f16-%f23 */ \
1044 56, 57, 58, 59, 60, 61, 62, 63, /* %f24-%f31 */ \
1045 64, 65, 66, 67, 68, 69, 70, 71, /* %f32-%f39 */ \
1046 72, 73, 74, 75, 76, 77, 78, 79, /* %f40-%f47 */ \
1047 80, 81, 82, 83, 84, 85, 86, 87, /* %f48-%f55 */ \
1048 88, 89, 90, 91, 92, 93, 94, 95, /* %f56-%f63 */ \
1049 39, 38, 37, 36, 35, 34, 33, 32, /* %f7-%f0 */ \
1050 96, 97, 98, 99, /* %fcc0-3 */ \
1051 100, 0, 14, 30, 101, 102 } /* %icc, %g0, %o6, %i6, %sfp, %gsr */
1053 /* This is the order in which to allocate registers for
1054 leaf functions. If all registers can fit in the global and
1055 output registers, then we have the possibility of having a leaf
1058 The macro actually mentioned the input registers first,
1059 because they get renumbered into the output registers once
1060 we know really do have a leaf function.
1062 To be more precise, this register allocation order is used
1063 when %o7 is found to not be clobbered right before register
1064 allocation. Normally, the reason %o7 would be clobbered is
1065 due to a call which could not be transformed into a sibling
1068 As a consequence, it is possible to use the leaf register
1069 allocation order and not end up with a leaf function. We will
1070 not get suboptimal register allocation in that case because by
1071 definition of being potentially leaf, there were no function
1072 calls. Therefore, allocation order within the local register
1073 window is not critical like it is when we do have function calls. */
1075 #define REG_LEAF_ALLOC_ORDER \
1076 { 1, 2, 3, 4, 5, 6, 7, /* %g1-%g7 */ \
1077 29, 28, 27, 26, 25, 24, /* %i5-%i0 */ \
1079 13, 12, 11, 10, 9, 8, /* %o5-%o0 */ \
1080 16, 17, 18, 19, 20, 21, 22, 23, /* %l0-%l7 */ \
1081 40, 41, 42, 43, 44, 45, 46, 47, /* %f8-%f15 */ \
1082 48, 49, 50, 51, 52, 53, 54, 55, /* %f16-%f23 */ \
1083 56, 57, 58, 59, 60, 61, 62, 63, /* %f24-%f31 */ \
1084 64, 65, 66, 67, 68, 69, 70, 71, /* %f32-%f39 */ \
1085 72, 73, 74, 75, 76, 77, 78, 79, /* %f40-%f47 */ \
1086 80, 81, 82, 83, 84, 85, 86, 87, /* %f48-%f55 */ \
1087 88, 89, 90, 91, 92, 93, 94, 95, /* %f56-%f63 */ \
1088 39, 38, 37, 36, 35, 34, 33, 32, /* %f7-%f0 */ \
1089 96, 97, 98, 99, /* %fcc0-3 */ \
1090 100, 0, 14, 30, 31, 101, 102 } /* %icc, %g0, %o6, %i6, %i7, %sfp, %gsr */
1092 #define ADJUST_REG_ALLOC_ORDER order_regs_for_local_alloc ()
1094 extern char sparc_leaf_regs
[];
1095 #define LEAF_REGISTERS sparc_leaf_regs
1097 extern char leaf_reg_remap
[];
1098 #define LEAF_REG_REMAP(REGNO) (leaf_reg_remap[REGNO])
1100 /* The class value for index registers, and the one for base regs. */
1101 #define INDEX_REG_CLASS GENERAL_REGS
1102 #define BASE_REG_CLASS GENERAL_REGS
1104 /* Local macro to handle the two v9 classes of FP regs. */
1105 #define FP_REG_CLASS_P(CLASS) ((CLASS) == FP_REGS || (CLASS) == EXTRA_FP_REGS)
1107 /* Predicates for 10-bit, 11-bit and 13-bit signed constants. */
1108 #define SPARC_SIMM10_P(X) ((unsigned HOST_WIDE_INT) (X) + 0x200 < 0x400)
1109 #define SPARC_SIMM11_P(X) ((unsigned HOST_WIDE_INT) (X) + 0x400 < 0x800)
1110 #define SPARC_SIMM13_P(X) ((unsigned HOST_WIDE_INT) (X) + 0x1000 < 0x2000)
1112 /* 10- and 11-bit immediates are only used for a few specific insns.
1113 SMALL_INT is used throughout the port so we continue to use it. */
1114 #define SMALL_INT(X) (SPARC_SIMM13_P (INTVAL (X)))
1116 /* Predicate for constants that can be loaded with a sethi instruction.
1117 This is the general, 64-bit aware, bitwise version that ensures that
1118 only constants whose representation fits in the mask
1122 are accepted. It will reject, for example, negative SImode constants
1123 on 64-bit hosts, so correct handling is to mask the value beforehand
1124 according to the mode of the instruction. */
1125 #define SPARC_SETHI_P(X) \
1126 (((unsigned HOST_WIDE_INT) (X) \
1127 & ((unsigned HOST_WIDE_INT) 0x3ff - GET_MODE_MASK (SImode) - 1)) == 0)
1129 /* Version of the above predicate for SImode constants and below. */
1130 #define SPARC_SETHI32_P(X) \
1131 (SPARC_SETHI_P ((unsigned HOST_WIDE_INT) (X) & GET_MODE_MASK (SImode)))
1133 /* Return the register class of a scratch register needed to load IN into
1134 a register of class CLASS in MODE.
1136 We need a temporary when loading/storing a HImode/QImode value
1137 between memory and the FPU registers. This can happen when combine puts
1138 a paradoxical subreg in a float/fix conversion insn.
1140 We need a temporary when loading/storing a DFmode value between
1141 unaligned memory and the upper FPU registers. */
1143 #define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, IN) \
1144 ((FP_REG_CLASS_P (CLASS) \
1145 && ((MODE) == HImode || (MODE) == QImode) \
1146 && (GET_CODE (IN) == MEM \
1147 || ((GET_CODE (IN) == REG || GET_CODE (IN) == SUBREG) \
1148 && true_regnum (IN) == -1))) \
1150 : ((CLASS) == EXTRA_FP_REGS && (MODE) == DFmode \
1151 && GET_CODE (IN) == MEM && TARGET_ARCH32 \
1152 && ! mem_min_alignment ((IN), 8)) \
1154 : (((TARGET_CM_MEDANY \
1155 && symbolic_operand ((IN), (MODE))) \
1156 || (TARGET_CM_EMBMEDANY \
1157 && text_segment_operand ((IN), (MODE)))) \
1162 #define SECONDARY_OUTPUT_RELOAD_CLASS(CLASS, MODE, IN) \
1163 ((FP_REG_CLASS_P (CLASS) \
1164 && ((MODE) == HImode || (MODE) == QImode) \
1165 && (GET_CODE (IN) == MEM \
1166 || ((GET_CODE (IN) == REG || GET_CODE (IN) == SUBREG) \
1167 && true_regnum (IN) == -1))) \
1169 : ((CLASS) == EXTRA_FP_REGS && (MODE) == DFmode \
1170 && GET_CODE (IN) == MEM && TARGET_ARCH32 \
1171 && ! mem_min_alignment ((IN), 8)) \
1173 : (((TARGET_CM_MEDANY \
1174 && symbolic_operand ((IN), (MODE))) \
1175 || (TARGET_CM_EMBMEDANY \
1176 && text_segment_operand ((IN), (MODE)))) \
1181 /* On SPARC it is not possible to directly move data between
1182 GENERAL_REGS and FP_REGS. */
1183 #define SECONDARY_MEMORY_NEEDED(CLASS1, CLASS2, MODE) \
1184 (FP_REG_CLASS_P (CLASS1) != FP_REG_CLASS_P (CLASS2))
1186 /* Get_secondary_mem widens its argument to BITS_PER_WORD which loses on v9
1187 because the movsi and movsf patterns don't handle r/f moves.
1188 For v8 we copy the default definition. */
1189 #define SECONDARY_MEMORY_NEEDED_MODE(MODE) \
1191 ? (GET_MODE_BITSIZE (MODE) < 32 \
1192 ? mode_for_size (32, GET_MODE_CLASS (MODE), 0) \
1194 : (GET_MODE_BITSIZE (MODE) < BITS_PER_WORD \
1195 ? mode_for_size (BITS_PER_WORD, GET_MODE_CLASS (MODE), 0) \
1198 /* Return the maximum number of consecutive registers
1199 needed to represent mode MODE in a register of class CLASS. */
1200 /* On SPARC, this is the size of MODE in words. */
1201 #define CLASS_MAX_NREGS(CLASS, MODE) \
1202 (FP_REG_CLASS_P (CLASS) ? (GET_MODE_SIZE (MODE) + 3) / 4 \
1203 : (GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
1205 /* Stack layout; function entry, exit and calling. */
1207 /* Define this if pushing a word on the stack
1208 makes the stack pointer a smaller address. */
1209 #define STACK_GROWS_DOWNWARD
1211 /* Define this to nonzero if the nominal address of the stack frame
1212 is at the high-address end of the local variables;
1213 that is, each additional local variable allocated
1214 goes at a more negative offset in the frame. */
1215 #define FRAME_GROWS_DOWNWARD 1
1217 /* Offset within stack frame to start allocating local variables at.
1218 If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
1219 first local allocated. Otherwise, it is the offset to the BEGINNING
1220 of the first local allocated. */
1221 #define STARTING_FRAME_OFFSET 0
1223 /* Offset of first parameter from the argument pointer register value.
1224 !v9: This is 64 for the ins and locals, plus 4 for the struct-return reg
1225 even if this function isn't going to use it.
1226 v9: This is 128 for the ins and locals. */
1227 #define FIRST_PARM_OFFSET(FNDECL) \
1228 (TARGET_ARCH64 ? 16 * UNITS_PER_WORD : STRUCT_VALUE_OFFSET + UNITS_PER_WORD)
1230 /* Offset from the argument pointer register value to the CFA.
1231 This is different from FIRST_PARM_OFFSET because the register window
1232 comes between the CFA and the arguments. */
1233 #define ARG_POINTER_CFA_OFFSET(FNDECL) 0
1235 /* When a parameter is passed in a register, stack space is still
1237 !v9: All 6 possible integer registers have backing store allocated.
1238 v9: Only space for the arguments passed is allocated. */
1239 /* ??? Ideally, we'd use zero here (as the minimum), but zero has special
1240 meaning to the backend. Further, we need to be able to detect if a
1241 varargs/unprototyped function is called, as they may want to spill more
1242 registers than we've provided space. Ugly, ugly. So for now we retain
1243 all 6 slots even for v9. */
1244 #define REG_PARM_STACK_SPACE(DECL) (6 * UNITS_PER_WORD)
1246 /* Definitions for register elimination. */
1248 #define ELIMINABLE_REGS \
1249 {{ FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
1250 { FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM} }
1252 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
1254 if ((TO) == STACK_POINTER_REGNUM) \
1255 (OFFSET) = sparc_compute_frame_size (get_frame_size (), \
1256 current_function_is_leaf); \
1259 (OFFSET) += SPARC_STACK_BIAS; \
1262 /* Keep the stack pointer constant throughout the function.
1263 This is both an optimization and a necessity: longjmp
1264 doesn't behave itself when the stack pointer moves within
1266 #define ACCUMULATE_OUTGOING_ARGS 1
1268 /* Define this macro if the target machine has "register windows". This
1269 C expression returns the register number as seen by the called function
1270 corresponding to register number OUT as seen by the calling function.
1271 Return OUT if register number OUT is not an outbound register. */
1273 #define INCOMING_REGNO(OUT) \
1274 ((TARGET_FLAT || (OUT) < 8 || (OUT) > 15) ? (OUT) : (OUT) + 16)
1276 /* Define this macro if the target machine has "register windows". This
1277 C expression returns the register number as seen by the calling function
1278 corresponding to register number IN as seen by the called function.
1279 Return IN if register number IN is not an inbound register. */
1281 #define OUTGOING_REGNO(IN) \
1282 ((TARGET_FLAT || (IN) < 24 || (IN) > 31) ? (IN) : (IN) - 16)
1284 /* Define this macro if the target machine has register windows. This
1285 C expression returns true if the register is call-saved but is in the
1288 #define LOCAL_REGNO(REGNO) \
1289 (!TARGET_FLAT && (REGNO) >= 16 && (REGNO) <= 31)
1291 /* Define the size of space to allocate for the return value of an
1294 #define APPLY_RESULT_SIZE (TARGET_ARCH64 ? 24 : 16)
1296 /* 1 if N is a possible register number for function argument passing.
1297 On SPARC, these are the "output" registers. v9 also uses %f0-%f31. */
1299 #define FUNCTION_ARG_REGNO_P(N) \
1301 ? (((N) >= 8 && (N) <= 13) || ((N) >= 32 && (N) <= 63)) \
1302 : ((N) >= 8 && (N) <= 13))
1304 /* Define a data type for recording info about an argument list
1305 during the scan of that argument list. This data type should
1306 hold all necessary information about the function itself
1307 and about the args processed so far, enough to enable macros
1308 such as FUNCTION_ARG to determine where the next arg should go.
1310 On SPARC (!v9), this is a single integer, which is a number of words
1311 of arguments scanned so far (including the invisible argument,
1312 if any, which holds the structure-value-address).
1313 Thus 7 or more means all following args should go on the stack.
1315 For v9, we also need to know whether a prototype is present. */
1318 int words
; /* number of words passed so far */
1319 int prototype_p
; /* nonzero if a prototype is present */
1320 int libcall_p
; /* nonzero if a library call */
1322 #define CUMULATIVE_ARGS struct sparc_args
1324 /* Initialize a variable CUM of type CUMULATIVE_ARGS
1325 for a call to a function whose data type is FNTYPE.
1326 For a library call, FNTYPE is 0. */
1328 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \
1329 init_cumulative_args (& (CUM), (FNTYPE), (LIBNAME), (FNDECL));
1331 /* If defined, a C expression which determines whether, and in which direction,
1332 to pad out an argument with extra space. The value should be of type
1333 `enum direction': either `upward' to pad above the argument,
1334 `downward' to pad below, or `none' to inhibit padding. */
1336 #define FUNCTION_ARG_PADDING(MODE, TYPE) \
1337 function_arg_padding ((MODE), (TYPE))
1340 /* Generate the special assembly code needed to tell the assembler whatever
1341 it might need to know about the return value of a function.
1343 For SPARC assemblers, we need to output a .proc pseudo-op which conveys
1344 information to the assembler relating to peephole optimization (done in
1347 #define ASM_DECLARE_RESULT(FILE, RESULT) \
1348 fprintf ((FILE), "\t.proc\t0%lo\n", sparc_type_code (TREE_TYPE (RESULT)))
1350 /* Output the special assembly code needed to tell the assembler some
1351 register is used as global register variable.
1353 SPARC 64bit psABI declares registers %g2 and %g3 as application
1354 registers and %g6 and %g7 as OS registers. Any object using them
1355 should declare (for %g2/%g3 has to, for %g6/%g7 can) that it uses them
1356 and how they are used (scratch or some global variable).
1357 Linker will then refuse to link together objects which use those
1358 registers incompatibly.
1360 Unless the registers are used for scratch, two different global
1361 registers cannot be declared to the same name, so in the unlikely
1362 case of a global register variable occupying more than one register
1363 we prefix the second and following registers with .gnu.part1. etc. */
1365 extern GTY(()) char sparc_hard_reg_printed
[8];
1367 #ifdef HAVE_AS_REGISTER_PSEUDO_OP
1368 #define ASM_DECLARE_REGISTER_GLOBAL(FILE, DECL, REGNO, NAME) \
1370 if (TARGET_ARCH64) \
1372 int end = HARD_REGNO_NREGS ((REGNO), DECL_MODE (decl)) + (REGNO); \
1374 for (reg = (REGNO); reg < 8 && reg < end; reg++) \
1375 if ((reg & ~1) == 2 || (reg & ~1) == 6) \
1377 if (reg == (REGNO)) \
1378 fprintf ((FILE), "\t.register\t%%g%d, %s\n", reg, (NAME)); \
1380 fprintf ((FILE), "\t.register\t%%g%d, .gnu.part%d.%s\n", \
1381 reg, reg - (REGNO), (NAME)); \
1382 sparc_hard_reg_printed[reg] = 1; \
1389 /* Emit rtl for profiling. */
1390 #define PROFILE_HOOK(LABEL) sparc_profile_hook (LABEL)
1392 /* All the work done in PROFILE_HOOK, but still required. */
1393 #define FUNCTION_PROFILER(FILE, LABELNO) do { } while (0)
1395 /* Set the name of the mcount function for the system. */
1396 #define MCOUNT_FUNCTION "*mcount"
1398 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
1399 the stack pointer does not matter. The value is tested only in
1400 functions that have frame pointers. */
1401 #define EXIT_IGNORE_STACK 1
1403 /* Length in units of the trampoline for entering a nested function. */
1404 #define TRAMPOLINE_SIZE (TARGET_ARCH64 ? 32 : 16)
1406 /* Alignment required for trampolines, in bits. */
1407 #define TRAMPOLINE_ALIGNMENT 128
1409 /* Generate RTL to flush the register windows so as to make arbitrary frames
1411 #define SETUP_FRAME_ADDRESSES() \
1414 emit_insn (gen_flush_register_windows ());\
1417 /* Given an rtx for the address of a frame,
1418 return an rtx for the address of the word in the frame
1419 that holds the dynamic chain--the previous frame's address. */
1420 #define DYNAMIC_CHAIN_ADDRESS(frame) \
1421 plus_constant (frame, 14 * UNITS_PER_WORD + SPARC_STACK_BIAS)
1423 /* Given an rtx for the frame pointer,
1424 return an rtx for the address of the frame. */
1425 #define FRAME_ADDR_RTX(frame) plus_constant (frame, SPARC_STACK_BIAS)
1427 /* The return address isn't on the stack, it is in a register, so we can't
1428 access it from the current frame pointer. We can access it from the
1429 previous frame pointer though by reading a value from the register window
1431 #define RETURN_ADDR_IN_PREVIOUS_FRAME
1433 /* This is the offset of the return address to the true next instruction to be
1434 executed for the current function. */
1435 #define RETURN_ADDR_OFFSET \
1436 (8 + 4 * (! TARGET_ARCH64 && cfun->returns_struct))
1438 /* The current return address is in %i7. The return address of anything
1439 farther back is in the register window save area at [%fp+60]. */
1440 /* ??? This ignores the fact that the actual return address is +8 for normal
1441 returns, and +12 for structure returns. */
1442 #define RETURN_ADDR_REGNUM 31
1443 #define RETURN_ADDR_RTX(count, frame) \
1445 ? gen_rtx_REG (Pmode, RETURN_ADDR_REGNUM) \
1446 : gen_rtx_MEM (Pmode, \
1447 memory_address (Pmode, plus_constant (frame, \
1448 15 * UNITS_PER_WORD \
1449 + SPARC_STACK_BIAS))))
1451 /* Before the prologue, the return address is %o7 + 8. OK, sometimes it's
1452 +12, but always using +8 is close enough for frame unwind purposes.
1453 Actually, just using %o7 is close enough for unwinding, but %o7+8
1454 is something you can return to. */
1455 #define INCOMING_RETURN_ADDR_REGNUM 15
1456 #define INCOMING_RETURN_ADDR_RTX \
1457 plus_constant (gen_rtx_REG (word_mode, INCOMING_RETURN_ADDR_REGNUM), 8)
1458 #define DWARF_FRAME_RETURN_COLUMN \
1459 DWARF_FRAME_REGNUM (INCOMING_RETURN_ADDR_REGNUM)
1461 /* The offset from the incoming value of %sp to the top of the stack frame
1462 for the current function. On sparc64, we have to account for the stack
1464 #define INCOMING_FRAME_SP_OFFSET SPARC_STACK_BIAS
1466 /* Describe how we implement __builtin_eh_return. */
1467 #define EH_RETURN_REGNUM 1
1468 #define EH_RETURN_DATA_REGNO(N) ((N) < 4 ? (N) + 24 : INVALID_REGNUM)
1469 #define EH_RETURN_STACKADJ_RTX gen_rtx_REG (Pmode, EH_RETURN_REGNUM)
1471 /* Define registers used by the epilogue and return instruction. */
1472 #define EPILOGUE_USES(REGNO) \
1473 ((REGNO) == RETURN_ADDR_REGNUM \
1475 && epilogue_completed \
1476 && (REGNO) == INCOMING_RETURN_ADDR_REGNUM) \
1477 || (crtl->calls_eh_return && (REGNO) == EH_RETURN_REGNUM))
1479 /* Select a format to encode pointers in exception handling data. CODE
1480 is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is
1481 true if the symbol may be affected by dynamic relocations.
1483 If assembler and linker properly support .uaword %r_disp32(foo),
1484 then use PC relative 32-bit relocations instead of absolute relocs
1485 for shared libraries. On sparc64, use pc relative 32-bit relocs even
1486 for binaries, to save memory.
1488 binutils 2.12 would emit a R_SPARC_DISP32 dynamic relocation if the
1489 symbol %r_disp32() is against was not local, but .hidden. In that
1490 case, we have to use DW_EH_PE_absptr for pic personality. */
1491 #ifdef HAVE_AS_SPARC_UA_PCREL
1492 #ifdef HAVE_AS_SPARC_UA_PCREL_HIDDEN
1493 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
1495 ? (GLOBAL ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4\
1496 : ((TARGET_ARCH64 && ! GLOBAL) \
1497 ? (DW_EH_PE_pcrel | DW_EH_PE_sdata4) \
1500 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
1502 ? (GLOBAL ? DW_EH_PE_absptr : (DW_EH_PE_pcrel | DW_EH_PE_sdata4)) \
1503 : ((TARGET_ARCH64 && ! GLOBAL) \
1504 ? (DW_EH_PE_pcrel | DW_EH_PE_sdata4) \
1508 /* Emit a PC-relative relocation. */
1509 #define ASM_OUTPUT_DWARF_PCREL(FILE, SIZE, LABEL) \
1511 fputs (integer_asm_op (SIZE, FALSE), FILE); \
1512 fprintf (FILE, "%%r_disp%d(", SIZE * 8); \
1513 assemble_name (FILE, LABEL); \
1514 fputc (')', FILE); \
1518 /* Addressing modes, and classification of registers for them. */
1520 /* Macros to check register numbers against specific register classes. */
1522 /* These assume that REGNO is a hard or pseudo reg number.
1523 They give nonzero only if REGNO is a hard reg of the suitable class
1524 or a pseudo reg currently allocated to a suitable hard reg.
1525 Since they use reg_renumber, they are safe only once reg_renumber
1526 has been allocated, which happens in local-alloc.c. */
1528 #define REGNO_OK_FOR_INDEX_P(REGNO) \
1529 ((REGNO) < 32 || (unsigned) reg_renumber[REGNO] < (unsigned)32 \
1530 || (REGNO) == FRAME_POINTER_REGNUM \
1531 || reg_renumber[REGNO] == FRAME_POINTER_REGNUM)
1533 #define REGNO_OK_FOR_BASE_P(REGNO) REGNO_OK_FOR_INDEX_P (REGNO)
1535 #define REGNO_OK_FOR_FP_P(REGNO) \
1536 (((unsigned) (REGNO) - 32 < (TARGET_V9 ? (unsigned)64 : (unsigned)32)) \
1537 || ((unsigned) reg_renumber[REGNO] - 32 < (TARGET_V9 ? (unsigned)64 : (unsigned)32)))
1539 #define REGNO_OK_FOR_CCFP_P(REGNO) \
1541 && (((unsigned) (REGNO) - 96 < (unsigned)4) \
1542 || ((unsigned) reg_renumber[REGNO] - 96 < (unsigned)4)))
1544 /* Maximum number of registers that can appear in a valid memory address. */
1546 #define MAX_REGS_PER_ADDRESS 2
1548 /* Recognize any constant value that is a valid address.
1549 When PIC, we do not accept an address that would require a scratch reg
1550 to load into a register. */
1552 #define CONSTANT_ADDRESS_P(X) constant_address_p (X)
1554 /* Define this, so that when PIC, reload won't try to reload invalid
1555 addresses which require two reload registers. */
1557 #define LEGITIMATE_PIC_OPERAND_P(X) legitimate_pic_operand_p (X)
1559 /* Should gcc use [%reg+%lo(xx)+offset] addresses? */
1561 #ifdef HAVE_AS_OFFSETABLE_LO10
1562 #define USE_AS_OFFSETABLE_LO10 1
1564 #define USE_AS_OFFSETABLE_LO10 0
1567 /* Try a machine-dependent way of reloading an illegitimate address
1568 operand. If we find one, push the reload and jump to WIN. This
1569 macro is used in only one place: `find_reloads_address' in reload.c. */
1570 #define LEGITIMIZE_RELOAD_ADDRESS(X,MODE,OPNUM,TYPE,IND_LEVELS,WIN) \
1573 (X) = sparc_legitimize_reload_address ((X), (MODE), (OPNUM), \
1574 (int)(TYPE), (IND_LEVELS), &win); \
1579 /* Specify the machine mode that this machine uses
1580 for the index in the tablejump instruction. */
1581 /* If we ever implement any of the full models (such as CM_FULLANY),
1582 this has to be DImode in that case */
1583 #ifdef HAVE_GAS_SUBSECTION_ORDERING
1584 #define CASE_VECTOR_MODE \
1585 (! TARGET_PTR64 ? SImode : flag_pic ? SImode : TARGET_CM_MEDLOW ? SImode : DImode)
1587 /* If assembler does not have working .subsection -1, we use DImode for pic, as otherwise
1588 we have to sign extend which slows things down. */
1589 #define CASE_VECTOR_MODE \
1590 (! TARGET_PTR64 ? SImode : flag_pic ? DImode : TARGET_CM_MEDLOW ? SImode : DImode)
1593 /* Define this as 1 if `char' should by default be signed; else as 0. */
1594 #define DEFAULT_SIGNED_CHAR 1
1596 /* Max number of bytes we can move from memory to memory
1597 in one reasonably fast instruction. */
1600 /* If a memory-to-memory move would take MOVE_RATIO or more simple
1601 move-instruction pairs, we will do a movmem or libcall instead. */
1603 #define MOVE_RATIO(speed) ((speed) ? 8 : 3)
1605 /* Define if operations between registers always perform the operation
1606 on the full register even if a narrower mode is specified. */
1607 #define WORD_REGISTER_OPERATIONS
1609 /* Define if loading in MODE, an integral mode narrower than BITS_PER_WORD
1610 will either zero-extend or sign-extend. The value of this macro should
1611 be the code that says which one of the two operations is implicitly
1612 done, UNKNOWN if none. */
1613 #define LOAD_EXTEND_OP(MODE) ZERO_EXTEND
1615 /* Nonzero if access to memory by bytes is slow and undesirable.
1616 For RISC chips, it means that access to memory by bytes is no
1617 better than access by words when possible, so grab a whole word
1618 and maybe make use of that. */
1619 #define SLOW_BYTE_ACCESS 1
1621 /* Define this to be nonzero if shift instructions ignore all but the low-order
1623 #define SHIFT_COUNT_TRUNCATED 1
1625 /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
1626 is done just by pretending it is already truncated. */
1627 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
1629 /* Given a comparison code (EQ, NE, etc.) and the first operand of a COMPARE,
1630 return the mode to be used for the comparison. For floating-point,
1631 CCFP[E]mode is used. CC_NOOVmode should be used when the first operand
1632 is a PLUS, MINUS, NEG, or ASHIFT. CCmode should be used when no special
1633 processing is needed. */
1634 #define SELECT_CC_MODE(OP,X,Y) select_cc_mode ((OP), (X), (Y))
1636 /* Return nonzero if MODE implies a floating point inequality can be
1637 reversed. For SPARC this is always true because we have a full
1638 compliment of ordered and unordered comparisons, but until generic
1639 code knows how to reverse it correctly we keep the old definition. */
1640 #define REVERSIBLE_CC_MODE(MODE) ((MODE) != CCFPEmode && (MODE) != CCFPmode)
1642 /* A function address in a call instruction for indexing purposes. */
1643 #define FUNCTION_MODE Pmode
1645 /* Define this if addresses of constant functions
1646 shouldn't be put through pseudo regs where they can be cse'd.
1647 Desirable on machines where ordinary constants are expensive
1648 but a CALL with constant address is cheap. */
1649 #define NO_FUNCTION_CSE
1651 /* The _Q_* comparison libcalls return booleans. */
1652 #define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) ((MODE) == TFmode)
1654 /* Assume by default that the _Qp_* 64-bit libcalls are implemented such
1655 that the inputs are fully consumed before the output memory is clobbered. */
1657 #define TARGET_BUGGY_QP_LIB 0
1659 /* Assume by default that we do not have the Solaris-specific conversion
1660 routines nor 64-bit integer multiply and divide routines. */
1662 #define SUN_CONVERSION_LIBFUNCS 0
1663 #define DITF_CONVERSION_LIBFUNCS 0
1664 #define SUN_INTEGER_MULTIPLY_64 0
1666 /* Provide the cost of a branch. For pre-v9 processors we use
1667 a value of 3 to take into account the potential annulling of
1668 the delay slot (which ends up being a bubble in the pipeline slot)
1669 plus a cycle to take into consideration the instruction cache
1672 On v9 and later, which have branch prediction facilities, we set
1673 it to the depth of the pipeline as that is the cost of a
1674 mispredicted branch.
1676 On Niagara, normal branches insert 3 bubbles into the pipe
1677 and annulled branches insert 4 bubbles.
1679 On Niagara-2 and Niagara-3, a not-taken branch costs 1 cycle whereas
1680 a taken branch costs 6 cycles. */
1682 #define BRANCH_COST(speed_p, predictable_p) \
1683 ((sparc_cpu == PROCESSOR_V9 \
1684 || sparc_cpu == PROCESSOR_ULTRASPARC) \
1686 : (sparc_cpu == PROCESSOR_ULTRASPARC3 \
1688 : (sparc_cpu == PROCESSOR_NIAGARA \
1690 : ((sparc_cpu == PROCESSOR_NIAGARA2 \
1691 || sparc_cpu == PROCESSOR_NIAGARA3) \
1695 /* Control the assembler format that we output. */
1697 /* A C string constant describing how to begin a comment in the target
1698 assembler language. The compiler assumes that the comment will end at
1699 the end of the line. */
1701 #define ASM_COMMENT_START "!"
1703 /* Output to assembler file text saying following lines
1704 may contain character constants, extra white space, comments, etc. */
1706 #define ASM_APP_ON ""
1708 /* Output to assembler file text saying following lines
1709 no longer contain unusual constructs. */
1711 #define ASM_APP_OFF ""
1713 /* How to refer to registers in assembler output.
1714 This sequence is indexed by compiler's hard-register-number (see above). */
1716 #define REGISTER_NAMES \
1717 {"%g0", "%g1", "%g2", "%g3", "%g4", "%g5", "%g6", "%g7", \
1718 "%o0", "%o1", "%o2", "%o3", "%o4", "%o5", "%sp", "%o7", \
1719 "%l0", "%l1", "%l2", "%l3", "%l4", "%l5", "%l6", "%l7", \
1720 "%i0", "%i1", "%i2", "%i3", "%i4", "%i5", "%fp", "%i7", \
1721 "%f0", "%f1", "%f2", "%f3", "%f4", "%f5", "%f6", "%f7", \
1722 "%f8", "%f9", "%f10", "%f11", "%f12", "%f13", "%f14", "%f15", \
1723 "%f16", "%f17", "%f18", "%f19", "%f20", "%f21", "%f22", "%f23", \
1724 "%f24", "%f25", "%f26", "%f27", "%f28", "%f29", "%f30", "%f31", \
1725 "%f32", "%f33", "%f34", "%f35", "%f36", "%f37", "%f38", "%f39", \
1726 "%f40", "%f41", "%f42", "%f43", "%f44", "%f45", "%f46", "%f47", \
1727 "%f48", "%f49", "%f50", "%f51", "%f52", "%f53", "%f54", "%f55", \
1728 "%f56", "%f57", "%f58", "%f59", "%f60", "%f61", "%f62", "%f63", \
1729 "%fcc0", "%fcc1", "%fcc2", "%fcc3", "%icc", "%sfp", "%gsr" }
1731 /* Define additional names for use in asm clobbers and asm declarations. */
1733 #define ADDITIONAL_REGISTER_NAMES \
1734 {{"ccr", SPARC_ICC_REG}, {"cc", SPARC_ICC_REG}}
1736 /* On Sun 4, this limit is 2048. We use 1000 to be safe, since the length
1737 can run past this up to a continuation point. Once we used 1500, but
1738 a single entry in C++ can run more than 500 bytes, due to the length of
1739 mangled symbol names. dbxout.c should really be fixed to do
1740 continuations when they are actually needed instead of trying to
1742 #define DBX_CONTIN_LENGTH 1000
1744 /* This is how to output a command to make the user-level label named NAME
1745 defined for reference from other files. */
1747 /* Globalizing directive for a label. */
1748 #define GLOBAL_ASM_OP "\t.global "
1750 /* The prefix to add to user-visible assembler symbols. */
1752 #define USER_LABEL_PREFIX "_"
1754 /* This is how to store into the string LABEL
1755 the symbol_ref name of an internal numbered label where
1756 PREFIX is the class of label and NUM is the number within the class.
1757 This is suitable for output with `assemble_name'. */
1759 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
1760 sprintf ((LABEL), "*%s%ld", (PREFIX), (long)(NUM))
1762 /* This is how we hook in and defer the case-vector until the end of
1764 #define ASM_OUTPUT_ADDR_VEC(LAB,VEC) \
1765 sparc_defer_case_vector ((LAB),(VEC), 0)
1767 #define ASM_OUTPUT_ADDR_DIFF_VEC(LAB,VEC) \
1768 sparc_defer_case_vector ((LAB),(VEC), 1)
1770 /* This is how to output an element of a case-vector that is absolute. */
1772 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
1775 ASM_GENERATE_INTERNAL_LABEL (label, "L", VALUE); \
1776 if (CASE_VECTOR_MODE == SImode) \
1777 fprintf (FILE, "\t.word\t"); \
1779 fprintf (FILE, "\t.xword\t"); \
1780 assemble_name (FILE, label); \
1781 fputc ('\n', FILE); \
1784 /* This is how to output an element of a case-vector that is relative.
1785 (SPARC uses such vectors only when generating PIC.) */
1787 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
1790 ASM_GENERATE_INTERNAL_LABEL (label, "L", (VALUE)); \
1791 if (CASE_VECTOR_MODE == SImode) \
1792 fprintf (FILE, "\t.word\t"); \
1794 fprintf (FILE, "\t.xword\t"); \
1795 assemble_name (FILE, label); \
1796 ASM_GENERATE_INTERNAL_LABEL (label, "L", (REL)); \
1797 fputc ('-', FILE); \
1798 assemble_name (FILE, label); \
1799 fputc ('\n', FILE); \
1802 /* This is what to output before and after case-vector (both
1803 relative and absolute). If .subsection -1 works, we put case-vectors
1804 at the beginning of the current section. */
1806 #ifdef HAVE_GAS_SUBSECTION_ORDERING
1808 #define ASM_OUTPUT_ADDR_VEC_START(FILE) \
1809 fprintf(FILE, "\t.subsection\t-1\n")
1811 #define ASM_OUTPUT_ADDR_VEC_END(FILE) \
1812 fprintf(FILE, "\t.previous\n")
1816 /* This is how to output an assembler line
1817 that says to advance the location counter
1818 to a multiple of 2**LOG bytes. */
1820 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
1822 fprintf (FILE, "\t.align %d\n", (1<<(LOG)))
1824 #define ASM_OUTPUT_SKIP(FILE,SIZE) \
1825 fprintf (FILE, "\t.skip "HOST_WIDE_INT_PRINT_UNSIGNED"\n", (SIZE))
1827 /* This says how to output an assembler line
1828 to define a global common symbol. */
1830 #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
1831 ( fputs ("\t.common ", (FILE)), \
1832 assemble_name ((FILE), (NAME)), \
1833 fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",\"bss\"\n", (SIZE)))
1835 /* This says how to output an assembler line to define a local common
1838 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGNED) \
1839 ( fputs ("\t.reserve ", (FILE)), \
1840 assemble_name ((FILE), (NAME)), \
1841 fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",\"bss\",%u\n", \
1842 (SIZE), ((ALIGNED) / BITS_PER_UNIT)))
1844 /* A C statement (sans semicolon) to output to the stdio stream
1845 FILE the assembler definition of uninitialized global DECL named
1846 NAME whose size is SIZE bytes and alignment is ALIGN bytes.
1847 Try to use asm_output_aligned_bss to implement this macro. */
1849 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
1851 ASM_OUTPUT_ALIGNED_LOCAL (FILE, NAME, SIZE, ALIGN); \
1854 #define IDENT_ASM_OP "\t.ident\t"
1856 /* Output #ident as a .ident. */
1858 #define ASM_OUTPUT_IDENT(FILE, NAME) \
1859 fprintf (FILE, "%s\"%s\"\n", IDENT_ASM_OP, NAME);
1861 /* Prettify the assembly. */
1863 extern int sparc_indent_opcode
;
1865 #define ASM_OUTPUT_OPCODE(FILE, PTR) \
1867 if (sparc_indent_opcode) \
1870 sparc_indent_opcode = 0; \
1874 /* TLS support defaulting to original Sun flavor. GNU extensions
1875 must be activated in separate configuration files. */
1877 #define TARGET_TLS 1
1879 #define TARGET_TLS 0
1882 #define TARGET_SUN_TLS TARGET_TLS
1883 #define TARGET_GNU_TLS 0
1885 #ifndef HAVE_AS_FMAF_HPC_VIS3
1886 #define AS_NIAGARA3_FLAG "b"
1888 #define TARGET_FMAF 0
1890 #define AS_NIAGARA3_FLAG "d"
1893 /* The number of Pmode words for the setjmp buffer. */
1894 #define JMP_BUF_SIZE 12
1896 /* We use gcc _mcount for profiling. */
1897 #define NO_PROFILE_COUNTERS 0