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 and Niagara-2 do not implement RMO
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
251 #if TARGET_CPU_DEFAULT == TARGET_CPU_v9 \
252 || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc \
253 || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc3 \
254 || TARGET_CPU_DEFAULT == TARGET_CPU_niagara \
255 || TARGET_CPU_DEFAULT == TARGET_CPU_niagara2
257 #define CPP_CPU32_DEFAULT_SPEC ""
258 #define ASM_CPU32_DEFAULT_SPEC ""
260 #if TARGET_CPU_DEFAULT == TARGET_CPU_v9
261 /* ??? What does Sun's CC pass? */
262 #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__"
263 /* ??? It's not clear how other assemblers will handle this, so by default
264 use GAS. Sun's Solaris assembler recognizes -xarch=v8plus, but this case
265 is handled in sol2.h. */
266 #define ASM_CPU64_DEFAULT_SPEC "-Av9"
268 #if TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc
269 #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__"
270 #define ASM_CPU64_DEFAULT_SPEC "-Av9a"
272 #if TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc3
273 #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__"
274 #define ASM_CPU64_DEFAULT_SPEC "-Av9b"
276 #if TARGET_CPU_DEFAULT == TARGET_CPU_niagara
277 #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__"
278 #define ASM_CPU64_DEFAULT_SPEC "-Av9b"
280 #if TARGET_CPU_DEFAULT == TARGET_CPU_niagara2
281 #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__"
282 #define ASM_CPU64_DEFAULT_SPEC "-Av9b"
287 #define CPP_CPU64_DEFAULT_SPEC ""
288 #define ASM_CPU64_DEFAULT_SPEC ""
290 #if TARGET_CPU_DEFAULT == TARGET_CPU_sparc \
291 || TARGET_CPU_DEFAULT == TARGET_CPU_v8
292 #define CPP_CPU32_DEFAULT_SPEC ""
293 #define ASM_CPU32_DEFAULT_SPEC ""
296 #if TARGET_CPU_DEFAULT == TARGET_CPU_sparclet
297 #define CPP_CPU32_DEFAULT_SPEC "-D__sparclet__"
298 #define ASM_CPU32_DEFAULT_SPEC "-Asparclet"
301 #if TARGET_CPU_DEFAULT == TARGET_CPU_sparclite
302 #define CPP_CPU32_DEFAULT_SPEC "-D__sparclite__"
303 #define ASM_CPU32_DEFAULT_SPEC "-Asparclite"
306 #if TARGET_CPU_DEFAULT == TARGET_CPU_sparclite86x
307 #define CPP_CPU32_DEFAULT_SPEC "-D__sparclite86x__"
308 #define ASM_CPU32_DEFAULT_SPEC "-Asparclite"
311 #if TARGET_CPU_DEFAULT == TARGET_CPU_supersparc
312 #define CPP_CPU32_DEFAULT_SPEC "-D__supersparc__ -D__sparc_v8__"
313 #define ASM_CPU32_DEFAULT_SPEC ""
316 #if TARGET_CPU_DEFAULT == TARGET_CPU_hypersparc
317 #define CPP_CPU32_DEFAULT_SPEC "-D__hypersparc__ -D__sparc_v8__"
318 #define ASM_CPU32_DEFAULT_SPEC ""
321 #if TARGET_CPU_DEFAULT == TARGET_CPU_leon
322 #define CPP_CPU32_DEFAULT_SPEC "-D__leon__ -D__sparc_v8__"
323 #define ASM_CPU32_DEFAULT_SPEC ""
328 #if !defined(CPP_CPU32_DEFAULT_SPEC) || !defined(CPP_CPU64_DEFAULT_SPEC)
329 #error Unrecognized value in TARGET_CPU_DEFAULT.
334 #define CPP_CPU_DEFAULT_SPEC \
335 (DEFAULT_ARCH32_P ? "\
336 %{m64:" CPP_CPU64_DEFAULT_SPEC "} \
337 %{!m64:" CPP_CPU32_DEFAULT_SPEC "} \
339 %{m32:" CPP_CPU32_DEFAULT_SPEC "} \
340 %{!m32:" CPP_CPU64_DEFAULT_SPEC "} \
342 #define ASM_CPU_DEFAULT_SPEC \
343 (DEFAULT_ARCH32_P ? "\
344 %{m64:" ASM_CPU64_DEFAULT_SPEC "} \
345 %{!m64:" ASM_CPU32_DEFAULT_SPEC "} \
347 %{m32:" ASM_CPU32_DEFAULT_SPEC "} \
348 %{!m32:" ASM_CPU64_DEFAULT_SPEC "} \
351 #else /* !SPARC_BI_ARCH */
353 #define CPP_CPU_DEFAULT_SPEC (DEFAULT_ARCH32_P ? CPP_CPU32_DEFAULT_SPEC : CPP_CPU64_DEFAULT_SPEC)
354 #define ASM_CPU_DEFAULT_SPEC (DEFAULT_ARCH32_P ? ASM_CPU32_DEFAULT_SPEC : ASM_CPU64_DEFAULT_SPEC)
356 #endif /* !SPARC_BI_ARCH */
358 /* Define macros to distinguish architectures. */
360 /* Common CPP definitions used by CPP_SPEC amongst the various targets
361 for handling -mcpu=xxx switches. */
362 #define CPP_CPU_SPEC "\
363 %{msoft-float:-D_SOFT_FLOAT} \
364 %{mcpu=sparclet:-D__sparclet__} %{mcpu=tsc701:-D__sparclet__} \
365 %{mcpu=sparclite:-D__sparclite__} \
366 %{mcpu=f930:-D__sparclite__} %{mcpu=f934:-D__sparclite__} \
367 %{mcpu=sparclite86x:-D__sparclite86x__} \
368 %{mcpu=v8:-D__sparc_v8__} \
369 %{mcpu=supersparc:-D__supersparc__ -D__sparc_v8__} \
370 %{mcpu=hypersparc:-D__hypersparc__ -D__sparc_v8__} \
371 %{mcpu=leon:-D__leon__ -D__sparc_v8__} \
372 %{mcpu=v9:-D__sparc_v9__} \
373 %{mcpu=ultrasparc:-D__sparc_v9__} \
374 %{mcpu=ultrasparc3:-D__sparc_v9__} \
375 %{mcpu=niagara:-D__sparc_v9__} \
376 %{mcpu=niagara2:-D__sparc_v9__} \
377 %{!mcpu*:%(cpp_cpu_default)} \
379 #define CPP_ARCH32_SPEC ""
380 #define CPP_ARCH64_SPEC "-D__arch64__"
382 #define CPP_ARCH_DEFAULT_SPEC \
383 (DEFAULT_ARCH32_P ? CPP_ARCH32_SPEC : CPP_ARCH64_SPEC)
385 #define CPP_ARCH_SPEC "\
386 %{m32:%(cpp_arch32)} \
387 %{m64:%(cpp_arch64)} \
388 %{!m32:%{!m64:%(cpp_arch_default)}} \
391 /* Macro to distinguish endianness. */
392 #define CPP_ENDIAN_SPEC "\
393 %{mlittle-endian:-D__LITTLE_ENDIAN__}"
395 /* Macros to distinguish the particular subtarget. */
396 #define CPP_SUBTARGET_SPEC ""
398 #define CPP_SPEC "%(cpp_cpu) %(cpp_arch) %(cpp_endian) %(cpp_subtarget)"
400 /* This used to translate -dalign to -malign, but that is no good
401 because it can't turn off the usual meaning of making debugging dumps. */
405 /* Override in target specific files. */
406 #define ASM_CPU_SPEC "\
407 %{mcpu=sparclet:-Asparclet} %{mcpu=tsc701:-Asparclet} \
408 %{mcpu=sparclite:-Asparclite} \
409 %{mcpu=sparclite86x:-Asparclite} \
410 %{mcpu=f930:-Asparclite} %{mcpu=f934:-Asparclite} \
411 %{mv8plus:-Av8plus} \
413 %{mcpu=ultrasparc:%{!mv8plus:-Av9a}} \
414 %{mcpu=ultrasparc3:%{!mv8plus:-Av9b}} \
415 %{mcpu=niagara:%{!mv8plus:-Av9b}} \
416 %{mcpu=niagara2:%{!mv8plus:-Av9b}} \
417 %{!mcpu*:%(asm_cpu_default)} \
420 /* Word size selection, among other things.
421 This is what GAS uses. Add %(asm_arch) to ASM_SPEC to enable. */
423 #define ASM_ARCH32_SPEC "-32"
424 #ifdef HAVE_AS_REGISTER_PSEUDO_OP
425 #define ASM_ARCH64_SPEC "-64 -no-undeclared-regs"
427 #define ASM_ARCH64_SPEC "-64"
429 #define ASM_ARCH_DEFAULT_SPEC \
430 (DEFAULT_ARCH32_P ? ASM_ARCH32_SPEC : ASM_ARCH64_SPEC)
432 #define ASM_ARCH_SPEC "\
433 %{m32:%(asm_arch32)} \
434 %{m64:%(asm_arch64)} \
435 %{!m32:%{!m64:%(asm_arch_default)}} \
438 #ifdef HAVE_AS_RELAX_OPTION
439 #define ASM_RELAX_SPEC "%{!mno-relax:-relax}"
441 #define ASM_RELAX_SPEC ""
444 /* Special flags to the Sun-4 assembler when using pipe for input. */
447 %{!pg:%{!p:%{fpic|fPIC|fpie|fPIE:-k}}} %{keep-local-as-symbols:-L} \
448 %(asm_cpu) %(asm_relax)"
450 /* This macro defines names of additional specifications to put in the specs
451 that can be used in various specifications like CC1_SPEC. Its definition
452 is an initializer with a subgrouping for each command option.
454 Each subgrouping contains a string constant, that defines the
455 specification name, and a string constant that used by the GCC driver
458 Do not define this macro if it does not need to do anything. */
460 #define EXTRA_SPECS \
461 { "cpp_cpu", CPP_CPU_SPEC }, \
462 { "cpp_cpu_default", CPP_CPU_DEFAULT_SPEC }, \
463 { "cpp_arch32", CPP_ARCH32_SPEC }, \
464 { "cpp_arch64", CPP_ARCH64_SPEC }, \
465 { "cpp_arch_default", CPP_ARCH_DEFAULT_SPEC },\
466 { "cpp_arch", CPP_ARCH_SPEC }, \
467 { "cpp_endian", CPP_ENDIAN_SPEC }, \
468 { "cpp_subtarget", CPP_SUBTARGET_SPEC }, \
469 { "asm_cpu", ASM_CPU_SPEC }, \
470 { "asm_cpu_default", ASM_CPU_DEFAULT_SPEC }, \
471 { "asm_arch32", ASM_ARCH32_SPEC }, \
472 { "asm_arch64", ASM_ARCH64_SPEC }, \
473 { "asm_relax", ASM_RELAX_SPEC }, \
474 { "asm_arch_default", ASM_ARCH_DEFAULT_SPEC },\
475 { "asm_arch", ASM_ARCH_SPEC }, \
476 SUBTARGET_EXTRA_SPECS
478 #define SUBTARGET_EXTRA_SPECS
480 /* Because libgcc can generate references back to libc (via .umul etc.) we have
481 to list libc again after the second libgcc. */
482 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G %L"
485 #define PTRDIFF_TYPE (TARGET_ARCH64 ? "long int" : "int")
486 #define SIZE_TYPE (TARGET_ARCH64 ? "long unsigned int" : "unsigned int")
488 /* ??? This should be 32 bits for v9 but what can we do? */
489 #define WCHAR_TYPE "short unsigned int"
490 #define WCHAR_TYPE_SIZE 16
492 /* Mask of all CPU selection flags. */
494 (MASK_V8 + MASK_SPARCLITE + MASK_SPARCLET + MASK_V9 + MASK_DEPRECATED_V8_INSNS)
496 /* TARGET_HARD_MUL: Use hardware multiply instructions but not %y.
497 TARGET_HARD_MUL32: Use hardware multiply instructions with rd %y
498 to get high 32 bits. False in V8+ or V9 because multiply stores
499 a 64-bit result in a register. */
501 #define TARGET_HARD_MUL32 \
502 ((TARGET_V8 || TARGET_SPARCLITE \
503 || TARGET_SPARCLET || TARGET_DEPRECATED_V8_INSNS) \
504 && ! TARGET_V8PLUS && TARGET_ARCH32)
506 #define TARGET_HARD_MUL \
507 (TARGET_V8 || TARGET_SPARCLITE || TARGET_SPARCLET \
508 || TARGET_DEPRECATED_V8_INSNS || TARGET_V8PLUS)
510 /* MASK_APP_REGS must always be the default because that's what
511 FIXED_REGISTERS is set to and -ffixed- is processed before
512 TARGET_CONDITIONAL_REGISTER_USAGE is called (where we process
514 #define TARGET_DEFAULT (MASK_APP_REGS + MASK_FPU)
516 /* Recast the cpu class to be the cpu attribute.
517 Every file includes us, but not every file includes insn-attr.h. */
518 #define sparc_cpu_attr ((enum attr_cpu) sparc_cpu)
520 /* Support for a compile-time default CPU, et cetera. The rules are:
521 --with-cpu is ignored if -mcpu is specified.
522 --with-tune is ignored if -mtune is specified.
523 --with-float is ignored if -mhard-float, -msoft-float, -mfpu, or -mno-fpu
525 #define OPTION_DEFAULT_SPECS \
526 {"cpu", "%{!mcpu=*:-mcpu=%(VALUE)}" }, \
527 {"tune", "%{!mtune=*:-mtune=%(VALUE)}" }, \
528 {"float", "%{!msoft-float:%{!mhard-float:%{!mfpu:%{!mno-fpu:-m%(VALUE)-float}}}}" }
530 /* target machine storage layout */
532 /* Define this if most significant bit is lowest numbered
533 in instructions that operate on numbered bit-fields. */
534 #define BITS_BIG_ENDIAN 1
536 /* Define this if most significant byte of a word is the lowest numbered. */
537 #define BYTES_BIG_ENDIAN 1
539 /* Define this if most significant word of a multiword number is the lowest
541 #define WORDS_BIG_ENDIAN 1
543 #define MAX_BITS_PER_WORD 64
545 /* Width of a word, in units (bytes). */
546 #define UNITS_PER_WORD (TARGET_ARCH64 ? 8 : 4)
548 #define MIN_UNITS_PER_WORD UNITS_PER_WORD
550 #define MIN_UNITS_PER_WORD 4
553 /* Now define the sizes of the C data types. */
555 #define SHORT_TYPE_SIZE 16
556 #define INT_TYPE_SIZE 32
557 #define LONG_TYPE_SIZE (TARGET_ARCH64 ? 64 : 32)
558 #define LONG_LONG_TYPE_SIZE 64
559 #define FLOAT_TYPE_SIZE 32
560 #define DOUBLE_TYPE_SIZE 64
562 /* LONG_DOUBLE_TYPE_SIZE is defined per OS even though the
563 SPARC ABI says that it is 128-bit wide. */
564 /* #define LONG_DOUBLE_TYPE_SIZE 128 */
566 /* The widest floating-point format really supported by the hardware. */
567 #define WIDEST_HARDWARE_FP_SIZE 64
569 /* Width in bits of a pointer. This is the size of ptr_mode. */
570 #define POINTER_SIZE (TARGET_PTR64 ? 64 : 32)
572 /* This is the machine mode used for addresses. */
573 #define Pmode (TARGET_ARCH64 ? DImode : SImode)
575 /* If we have to extend pointers (only when TARGET_ARCH64 and not
576 TARGET_PTR64), we want to do it unsigned. This macro does nothing
577 if ptr_mode and Pmode are the same. */
578 #define POINTERS_EXTEND_UNSIGNED 1
580 /* Allocation boundary (in *bits*) for storing arguments in argument list. */
581 #define PARM_BOUNDARY (TARGET_ARCH64 ? 64 : 32)
583 /* Boundary (in *bits*) on which stack pointer should be aligned. */
584 /* FIXME, this is wrong when TARGET_ARCH64 and TARGET_STACK_BIAS, because
585 then %sp+2047 is 128-bit aligned so %sp is really only byte-aligned. */
586 #define STACK_BOUNDARY (TARGET_ARCH64 ? 128 : 64)
587 /* Temporary hack until the FIXME above is fixed. */
588 #define SPARC_STACK_BOUNDARY_HACK (TARGET_ARCH64 && TARGET_STACK_BIAS)
590 /* ALIGN FRAMES on double word boundaries */
592 #define SPARC_STACK_ALIGN(LOC) \
593 (TARGET_ARCH64 ? (((LOC)+15) & ~15) : (((LOC)+7) & ~7))
595 /* Allocation boundary (in *bits*) for the code of a function. */
596 #define FUNCTION_BOUNDARY 32
598 /* Alignment of field after `int : 0' in a structure. */
599 #define EMPTY_FIELD_BOUNDARY (TARGET_ARCH64 ? 64 : 32)
601 /* Every structure's size must be a multiple of this. */
602 #define STRUCTURE_SIZE_BOUNDARY 8
604 /* A bit-field declared as `int' forces `int' alignment for the struct. */
605 #define PCC_BITFIELD_TYPE_MATTERS 1
607 /* No data type wants to be aligned rounder than this. */
608 #define BIGGEST_ALIGNMENT (TARGET_ARCH64 ? 128 : 64)
610 /* The best alignment to use in cases where we have a choice. */
611 #define FASTEST_ALIGNMENT 64
613 /* Define this macro as an expression for the alignment of a structure
614 (given by STRUCT as a tree node) if the alignment computed in the
615 usual way is COMPUTED and the alignment explicitly specified was
618 The default is to use SPECIFIED if it is larger; otherwise, use
619 the smaller of COMPUTED and `BIGGEST_ALIGNMENT' */
620 #define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \
621 (TARGET_FASTER_STRUCTS ? \
622 ((TREE_CODE (STRUCT) == RECORD_TYPE \
623 || TREE_CODE (STRUCT) == UNION_TYPE \
624 || TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \
625 && TYPE_FIELDS (STRUCT) != 0 \
626 ? MAX (MAX ((COMPUTED), (SPECIFIED)), BIGGEST_ALIGNMENT) \
627 : MAX ((COMPUTED), (SPECIFIED))) \
628 : MAX ((COMPUTED), (SPECIFIED)))
630 /* Make strings word-aligned so strcpy from constants will be faster. */
631 #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
632 ((TREE_CODE (EXP) == STRING_CST \
633 && (ALIGN) < FASTEST_ALIGNMENT) \
634 ? FASTEST_ALIGNMENT : (ALIGN))
636 /* Make arrays of chars word-aligned for the same reasons. */
637 #define DATA_ALIGNMENT(TYPE, ALIGN) \
638 (TREE_CODE (TYPE) == ARRAY_TYPE \
639 && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \
640 && (ALIGN) < FASTEST_ALIGNMENT ? FASTEST_ALIGNMENT : (ALIGN))
642 /* Make local arrays of chars word-aligned for the same reasons. */
643 #define LOCAL_ALIGNMENT(TYPE, ALIGN) DATA_ALIGNMENT (TYPE, ALIGN)
645 /* Set this nonzero if move instructions will actually fail to work
646 when given unaligned data. */
647 #define STRICT_ALIGNMENT 1
649 /* Things that must be doubleword aligned cannot go in the text section,
650 because the linker fails to align the text section enough!
651 Put them in the data section. This macro is only used in this file. */
652 #define MAX_TEXT_ALIGN 32
654 /* Standard register usage. */
656 /* Number of actual hardware registers.
657 The hardware registers are assigned numbers for the compiler
658 from 0 to just below FIRST_PSEUDO_REGISTER.
659 All registers that the compiler knows about must be given numbers,
660 even those that are not normally considered general registers.
662 SPARC has 32 integer registers and 32 floating point registers.
663 64-bit SPARC has 32 additional fp regs, but the odd numbered ones are not
664 accessible. We still account for them to simplify register computations
665 (e.g.: in CLASS_MAX_NREGS). There are also 4 fp condition code registers, so
667 Register 100 is used as the integer condition code register.
668 Register 101 is used as the soft frame pointer register. */
670 #define FIRST_PSEUDO_REGISTER 102
672 #define SPARC_FIRST_FP_REG 32
673 /* Additional V9 fp regs. */
674 #define SPARC_FIRST_V9_FP_REG 64
675 #define SPARC_LAST_V9_FP_REG 95
676 /* V9 %fcc[0123]. V8 uses (figuratively) %fcc0. */
677 #define SPARC_FIRST_V9_FCC_REG 96
678 #define SPARC_LAST_V9_FCC_REG 99
680 #define SPARC_FCC_REG 96
681 /* Integer CC reg. We don't distinguish %icc from %xcc. */
682 #define SPARC_ICC_REG 100
684 /* Nonzero if REGNO is an fp reg. */
685 #define SPARC_FP_REG_P(REGNO) \
686 ((REGNO) >= SPARC_FIRST_FP_REG && (REGNO) <= SPARC_LAST_V9_FP_REG)
688 /* Argument passing regs. */
689 #define SPARC_OUTGOING_INT_ARG_FIRST 8
690 #define SPARC_INCOMING_INT_ARG_FIRST 24
691 #define SPARC_FP_ARG_FIRST 32
693 /* 1 for registers that have pervasive standard uses
694 and are not available for the register allocator.
697 g1 is free to use as temporary.
698 g2-g4 are reserved for applications. Gcc normally uses them as
699 temporaries, but this can be disabled via the -mno-app-regs option.
700 g5 through g7 are reserved for the operating system.
703 g1,g5 are free to use as temporaries, and are free to use between calls
704 if the call is to an external function via the PLT.
705 g4 is free to use as a temporary in the non-embedded case.
706 g4 is reserved in the embedded case.
707 g2-g3 are reserved for applications. Gcc normally uses them as
708 temporaries, but this can be disabled via the -mno-app-regs option.
709 g6-g7 are reserved for the operating system (or application in
711 ??? Register 1 is used as a temporary by the 64 bit sethi pattern, so must
712 currently be a fixed register until this pattern is rewritten.
713 Register 1 is also used when restoring call-preserved registers in large
716 Registers fixed in arch32 and not arch64 (or vice-versa) are marked in
717 TARGET_CONDITIONAL_REGISTER_USAGE in order to properly handle -ffixed-.
720 #define FIXED_REGISTERS \
721 {1, 0, 2, 2, 2, 2, 1, 1, \
722 0, 0, 0, 0, 0, 0, 1, 0, \
723 0, 0, 0, 0, 0, 0, 0, 0, \
724 0, 0, 0, 0, 0, 0, 1, 1, \
726 0, 0, 0, 0, 0, 0, 0, 0, \
727 0, 0, 0, 0, 0, 0, 0, 0, \
728 0, 0, 0, 0, 0, 0, 0, 0, \
729 0, 0, 0, 0, 0, 0, 0, 0, \
731 0, 0, 0, 0, 0, 0, 0, 0, \
732 0, 0, 0, 0, 0, 0, 0, 0, \
733 0, 0, 0, 0, 0, 0, 0, 0, \
734 0, 0, 0, 0, 0, 0, 0, 0, \
738 /* 1 for registers not available across function calls.
739 These must include the FIXED_REGISTERS and also any
740 registers that can be used without being saved.
741 The latter must include the registers where values are returned
742 and the register where structure-value addresses are passed.
743 Aside from that, you can include as many other registers as you like. */
745 #define CALL_USED_REGISTERS \
746 {1, 1, 1, 1, 1, 1, 1, 1, \
747 1, 1, 1, 1, 1, 1, 1, 1, \
748 0, 0, 0, 0, 0, 0, 0, 0, \
749 0, 0, 0, 0, 0, 0, 1, 1, \
751 1, 1, 1, 1, 1, 1, 1, 1, \
752 1, 1, 1, 1, 1, 1, 1, 1, \
753 1, 1, 1, 1, 1, 1, 1, 1, \
754 1, 1, 1, 1, 1, 1, 1, 1, \
756 1, 1, 1, 1, 1, 1, 1, 1, \
757 1, 1, 1, 1, 1, 1, 1, 1, \
758 1, 1, 1, 1, 1, 1, 1, 1, \
759 1, 1, 1, 1, 1, 1, 1, 1, \
763 /* Return number of consecutive hard regs needed starting at reg REGNO
764 to hold something of mode MODE.
765 This is ordinarily the length in words of a value of mode MODE
766 but can be less for certain modes in special long registers.
768 On SPARC, ordinary registers hold 32 bits worth;
769 this means both integer and floating point registers.
770 On v9, integer regs hold 64 bits worth; floating point regs hold
771 32 bits worth (this includes the new fp regs as even the odd ones are
772 included in the hard register count). */
774 #define HARD_REGNO_NREGS(REGNO, MODE) \
776 ? ((REGNO) < 32 || (REGNO) == FRAME_POINTER_REGNUM \
777 ? (GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD \
778 : (GET_MODE_SIZE (MODE) + 3) / 4) \
779 : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
781 /* Due to the ARCH64 discrepancy above we must override this next
783 #define REGMODE_NATURAL_SIZE(MODE) \
784 ((TARGET_ARCH64 && FLOAT_MODE_P (MODE)) ? 4 : UNITS_PER_WORD)
786 /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
787 See sparc.c for how we initialize this. */
788 extern const int *hard_regno_mode_classes;
789 extern int sparc_mode_class[];
791 /* ??? Because of the funny way we pass parameters we should allow certain
792 ??? types of float/complex values to be in integer registers during
793 ??? RTL generation. This only matters on arch32. */
794 #define HARD_REGNO_MODE_OK(REGNO, MODE) \
795 ((hard_regno_mode_classes[REGNO] & sparc_mode_class[MODE]) != 0)
797 /* Value is 1 if it is OK to rename a hard register FROM to another hard
798 register TO. We cannot rename %g1 as it may be used before the save
799 register window instruction in the prologue. */
800 #define HARD_REGNO_RENAME_OK(FROM, TO) ((FROM) != 1)
802 /* Value is 1 if it is a good idea to tie two pseudo registers
803 when one has mode MODE1 and one has mode MODE2.
804 If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
805 for any hard reg, then this must be 0 for correct output.
807 For V9: SFmode can't be combined with other float modes, because they can't
808 be allocated to the %d registers. Also, DFmode won't fit in odd %f
809 registers, but SFmode will. */
810 #define MODES_TIEABLE_P(MODE1, MODE2) \
811 ((MODE1) == (MODE2) \
812 || (GET_MODE_CLASS (MODE1) == GET_MODE_CLASS (MODE2) \
814 || (GET_MODE_CLASS (MODE1) != MODE_FLOAT \
815 || (MODE1 != SFmode && MODE2 != SFmode)))))
817 /* Specify the registers used for certain standard purposes.
818 The values of these macros are register numbers. */
820 /* Register to use for pushing function arguments. */
821 #define STACK_POINTER_REGNUM 14
823 /* The stack bias (amount by which the hardware register is offset by). */
824 #define SPARC_STACK_BIAS ((TARGET_ARCH64 && TARGET_STACK_BIAS) ? 2047 : 0)
826 /* Actual top-of-stack address is 92/176 greater than the contents of the
827 stack pointer register for !v9/v9. That is:
828 - !v9: 64 bytes for the in and local registers, 4 bytes for structure return
829 address, and 6*4 bytes for the 6 register parameters.
830 - v9: 128 bytes for the in and local registers + 6*8 bytes for the integer
832 #define STACK_POINTER_OFFSET (FIRST_PARM_OFFSET(0) + SPARC_STACK_BIAS)
834 /* Base register for access to local variables of the function. */
835 #define HARD_FRAME_POINTER_REGNUM 30
837 /* The soft frame pointer does not have the stack bias applied. */
838 #define FRAME_POINTER_REGNUM 101
840 /* Given the stack bias, the stack pointer isn't actually aligned. */
841 #define INIT_EXPANDERS \
843 if (crtl->emit.regno_pointer_align && SPARC_STACK_BIAS) \
845 REGNO_POINTER_ALIGN (STACK_POINTER_REGNUM) = BITS_PER_UNIT; \
846 REGNO_POINTER_ALIGN (HARD_FRAME_POINTER_REGNUM) = BITS_PER_UNIT; \
850 /* Base register for access to arguments of the function. */
851 #define ARG_POINTER_REGNUM FRAME_POINTER_REGNUM
853 /* Register in which static-chain is passed to a function. This must
854 not be a register used by the prologue. */
855 #define STATIC_CHAIN_REGNUM (TARGET_ARCH64 ? 5 : 2)
857 /* Register which holds the global offset table, if any. */
859 #define GLOBAL_OFFSET_TABLE_REGNUM 23
861 /* Register which holds offset table for position-independent
864 #define PIC_OFFSET_TABLE_REGNUM \
865 (flag_pic ? GLOBAL_OFFSET_TABLE_REGNUM : INVALID_REGNUM)
867 /* Pick a default value we can notice from override_options:
870 Originally it was -1, but later on the container of options changed to
871 unsigned byte, so we decided to pick 127 as default value, which does
872 reflect an undefined default value in case of 0/1. */
874 #define DEFAULT_PCC_STRUCT_RETURN 127
876 /* Functions which return large structures get the address
877 to place the wanted value at offset 64 from the frame.
878 Must reserve 64 bytes for the in and local registers.
879 v9: Functions which return large structures get the address to place the
880 wanted value from an invisible first argument. */
881 #define STRUCT_VALUE_OFFSET 64
883 /* Define the classes of registers for register constraints in the
884 machine description. Also define ranges of constants.
886 One of the classes must always be named ALL_REGS and include all hard regs.
887 If there is more than one class, another class must be named NO_REGS
888 and contain no registers.
890 The name GENERAL_REGS must be the name of a class (or an alias for
891 another name such as ALL_REGS). This is the class of registers
892 that is allowed by "g" or "r" in a register constraint.
893 Also, registers outside this class are allocated only when
894 instructions express preferences for them.
896 The classes must be numbered in nondecreasing order; that is,
897 a larger-numbered class must never be contained completely
898 in a smaller-numbered class.
900 For any two classes, it is very desirable that there be another
901 class that represents their union. */
903 /* The SPARC has various kinds of registers: general, floating point,
904 and condition codes [well, it has others as well, but none that we
905 care directly about].
907 For v9 we must distinguish between the upper and lower floating point
908 registers because the upper ones can't hold SFmode values.
909 HARD_REGNO_MODE_OK won't help here because reload assumes that register(s)
910 satisfying a group need for a class will also satisfy a single need for
911 that class. EXTRA_FP_REGS is a bit of a misnomer as it covers all 64 fp
914 It is important that one class contains all the general and all the standard
915 fp regs. Otherwise find_reg() won't properly allocate int regs for moves,
916 because reg_class_record() will bias the selection in favor of fp regs,
917 because reg_class_subunion[GENERAL_REGS][FP_REGS] will yield FP_REGS,
918 because FP_REGS > GENERAL_REGS.
920 It is also important that one class contain all the general and all
921 the fp regs. Otherwise when spilling a DFmode reg, it may be from
922 EXTRA_FP_REGS but find_reloads() may use class
923 GENERAL_OR_FP_REGS. This will cause allocate_reload_reg() to die
924 because the compiler thinks it doesn't have a spill reg when in
927 v9 also has 4 floating point condition code registers. Since we don't
928 have a class that is the union of FPCC_REGS with either of the others,
929 it is important that it appear first. Otherwise the compiler will die
930 trying to compile _fixunsdfsi because fix_truncdfsi2 won't match its
933 It is important that SPARC_ICC_REG have class NO_REGS. Otherwise combine
934 may try to use it to hold an SImode value. See register_operand.
935 ??? Should %fcc[0123] be handled similarly?
938 enum reg_class { NO_REGS, FPCC_REGS, I64_REGS, GENERAL_REGS, FP_REGS,
939 EXTRA_FP_REGS, GENERAL_OR_FP_REGS, GENERAL_OR_EXTRA_FP_REGS,
940 ALL_REGS, LIM_REG_CLASSES };
942 #define N_REG_CLASSES (int) LIM_REG_CLASSES
944 /* Give names of register classes as strings for dump file. */
946 #define REG_CLASS_NAMES \
947 { "NO_REGS", "FPCC_REGS", "I64_REGS", "GENERAL_REGS", "FP_REGS", \
948 "EXTRA_FP_REGS", "GENERAL_OR_FP_REGS", "GENERAL_OR_EXTRA_FP_REGS", \
951 /* Define which registers fit in which classes.
952 This is an initializer for a vector of HARD_REG_SET
953 of length N_REG_CLASSES. */
955 #define REG_CLASS_CONTENTS \
956 {{0, 0, 0, 0}, /* NO_REGS */ \
957 {0, 0, 0, 0xf}, /* FPCC_REGS */ \
958 {0xffff, 0, 0, 0}, /* I64_REGS */ \
959 {-1, 0, 0, 0x20}, /* GENERAL_REGS */ \
960 {0, -1, 0, 0}, /* FP_REGS */ \
961 {0, -1, -1, 0}, /* EXTRA_FP_REGS */ \
962 {-1, -1, 0, 0x20}, /* GENERAL_OR_FP_REGS */ \
963 {-1, -1, -1, 0x20}, /* GENERAL_OR_EXTRA_FP_REGS */ \
964 {-1, -1, -1, 0x3f}} /* ALL_REGS */
966 /* The same information, inverted:
967 Return the class number of the smallest class containing
968 reg number REGNO. This could be a conditional expression
969 or could index an array. */
971 extern enum reg_class sparc_regno_reg_class[FIRST_PSEUDO_REGISTER];
973 #define REGNO_REG_CLASS(REGNO) sparc_regno_reg_class[(REGNO)]
975 /* Defines invalid mode changes. Borrowed from pa64-regs.h.
977 SImode loads to floating-point registers are not zero-extended.
978 The definition for LOAD_EXTEND_OP specifies that integer loads
979 narrower than BITS_PER_WORD will be zero-extended. As a result,
980 we inhibit changes from SImode unless they are to a mode that is
981 identical in size. */
983 #define CANNOT_CHANGE_MODE_CLASS(FROM, TO, CLASS) \
985 && (FROM) == SImode \
986 && GET_MODE_SIZE (FROM) != GET_MODE_SIZE (TO) \
987 ? reg_classes_intersect_p (CLASS, FP_REGS) : 0)
989 /* This is the order in which to allocate registers normally.
991 We put %f0-%f7 last among the float registers, so as to make it more
992 likely that a pseudo-register which dies in the float return register
993 area will get allocated to the float return register, thus saving a move
994 instruction at the end of the function.
996 Similarly for integer return value registers.
998 We know in this case that we will not end up with a leaf function.
1000 The register allocator is given the global and out registers first
1001 because these registers are call clobbered and thus less useful to
1002 global register allocation.
1004 Next we list the local and in registers. They are not call clobbered
1005 and thus very useful for global register allocation. We list the input
1006 registers before the locals so that it is more likely the incoming
1007 arguments received in those registers can just stay there and not be
1010 #define REG_ALLOC_ORDER \
1011 { 1, 2, 3, 4, 5, 6, 7, /* %g1-%g7 */ \
1012 13, 12, 11, 10, 9, 8, /* %o5-%o0 */ \
1014 16, 17, 18, 19, 20, 21, 22, 23, /* %l0-%l7 */ \
1015 29, 28, 27, 26, 25, 24, 31, /* %i5-%i0,%i7 */\
1016 40, 41, 42, 43, 44, 45, 46, 47, /* %f8-%f15 */ \
1017 48, 49, 50, 51, 52, 53, 54, 55, /* %f16-%f23 */ \
1018 56, 57, 58, 59, 60, 61, 62, 63, /* %f24-%f31 */ \
1019 64, 65, 66, 67, 68, 69, 70, 71, /* %f32-%f39 */ \
1020 72, 73, 74, 75, 76, 77, 78, 79, /* %f40-%f47 */ \
1021 80, 81, 82, 83, 84, 85, 86, 87, /* %f48-%f55 */ \
1022 88, 89, 90, 91, 92, 93, 94, 95, /* %f56-%f63 */ \
1023 39, 38, 37, 36, 35, 34, 33, 32, /* %f7-%f0 */ \
1024 96, 97, 98, 99, /* %fcc0-3 */ \
1025 100, 0, 14, 30, 101} /* %icc, %g0, %o6, %i6, %sfp */
1027 /* This is the order in which to allocate registers for
1028 leaf functions. If all registers can fit in the global and
1029 output registers, then we have the possibility of having a leaf
1032 The macro actually mentioned the input registers first,
1033 because they get renumbered into the output registers once
1034 we know really do have a leaf function.
1036 To be more precise, this register allocation order is used
1037 when %o7 is found to not be clobbered right before register
1038 allocation. Normally, the reason %o7 would be clobbered is
1039 due to a call which could not be transformed into a sibling
1042 As a consequence, it is possible to use the leaf register
1043 allocation order and not end up with a leaf function. We will
1044 not get suboptimal register allocation in that case because by
1045 definition of being potentially leaf, there were no function
1046 calls. Therefore, allocation order within the local register
1047 window is not critical like it is when we do have function calls. */
1049 #define REG_LEAF_ALLOC_ORDER \
1050 { 1, 2, 3, 4, 5, 6, 7, /* %g1-%g7 */ \
1051 29, 28, 27, 26, 25, 24, /* %i5-%i0 */ \
1053 13, 12, 11, 10, 9, 8, /* %o5-%o0 */ \
1054 16, 17, 18, 19, 20, 21, 22, 23, /* %l0-%l7 */ \
1055 40, 41, 42, 43, 44, 45, 46, 47, /* %f8-%f15 */ \
1056 48, 49, 50, 51, 52, 53, 54, 55, /* %f16-%f23 */ \
1057 56, 57, 58, 59, 60, 61, 62, 63, /* %f24-%f31 */ \
1058 64, 65, 66, 67, 68, 69, 70, 71, /* %f32-%f39 */ \
1059 72, 73, 74, 75, 76, 77, 78, 79, /* %f40-%f47 */ \
1060 80, 81, 82, 83, 84, 85, 86, 87, /* %f48-%f55 */ \
1061 88, 89, 90, 91, 92, 93, 94, 95, /* %f56-%f63 */ \
1062 39, 38, 37, 36, 35, 34, 33, 32, /* %f7-%f0 */ \
1063 96, 97, 98, 99, /* %fcc0-3 */ \
1064 100, 0, 14, 30, 31, 101} /* %icc, %g0, %o6, %i6, %i7, %sfp */
1066 #define ADJUST_REG_ALLOC_ORDER order_regs_for_local_alloc ()
1068 extern char sparc_leaf_regs[];
1069 #define LEAF_REGISTERS sparc_leaf_regs
1071 extern char leaf_reg_remap[];
1072 #define LEAF_REG_REMAP(REGNO) (leaf_reg_remap[REGNO])
1074 /* The class value for index registers, and the one for base regs. */
1075 #define INDEX_REG_CLASS GENERAL_REGS
1076 #define BASE_REG_CLASS GENERAL_REGS
1078 /* Local macro to handle the two v9 classes of FP regs. */
1079 #define FP_REG_CLASS_P(CLASS) ((CLASS) == FP_REGS || (CLASS) == EXTRA_FP_REGS)
1081 /* Predicates for 10-bit, 11-bit and 13-bit signed constants. */
1082 #define SPARC_SIMM10_P(X) ((unsigned HOST_WIDE_INT) (X) + 0x200 < 0x400)
1083 #define SPARC_SIMM11_P(X) ((unsigned HOST_WIDE_INT) (X) + 0x400 < 0x800)
1084 #define SPARC_SIMM13_P(X) ((unsigned HOST_WIDE_INT) (X) + 0x1000 < 0x2000)
1086 /* 10- and 11-bit immediates are only used for a few specific insns.
1087 SMALL_INT is used throughout the port so we continue to use it. */
1088 #define SMALL_INT(X) (SPARC_SIMM13_P (INTVAL (X)))
1090 /* Predicate for constants that can be loaded with a sethi instruction.
1091 This is the general, 64-bit aware, bitwise version that ensures that
1092 only constants whose representation fits in the mask
1096 are accepted. It will reject, for example, negative SImode constants
1097 on 64-bit hosts, so correct handling is to mask the value beforehand
1098 according to the mode of the instruction. */
1099 #define SPARC_SETHI_P(X) \
1100 (((unsigned HOST_WIDE_INT) (X) \
1101 & ((unsigned HOST_WIDE_INT) 0x3ff - GET_MODE_MASK (SImode) - 1)) == 0)
1103 /* Version of the above predicate for SImode constants and below. */
1104 #define SPARC_SETHI32_P(X) \
1105 (SPARC_SETHI_P ((unsigned HOST_WIDE_INT) (X) & GET_MODE_MASK (SImode)))
1107 /* Return the register class of a scratch register needed to load IN into
1108 a register of class CLASS in MODE.
1110 We need a temporary when loading/storing a HImode/QImode value
1111 between memory and the FPU registers. This can happen when combine puts
1112 a paradoxical subreg in a float/fix conversion insn.
1114 We need a temporary when loading/storing a DFmode value between
1115 unaligned memory and the upper FPU registers. */
1117 #define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, IN) \
1118 ((FP_REG_CLASS_P (CLASS) \
1119 && ((MODE) == HImode || (MODE) == QImode) \
1120 && (GET_CODE (IN) == MEM \
1121 || ((GET_CODE (IN) == REG || GET_CODE (IN) == SUBREG) \
1122 && true_regnum (IN) == -1))) \
1124 : ((CLASS) == EXTRA_FP_REGS && (MODE) == DFmode \
1125 && GET_CODE (IN) == MEM && TARGET_ARCH32 \
1126 && ! mem_min_alignment ((IN), 8)) \
1128 : (((TARGET_CM_MEDANY \
1129 && symbolic_operand ((IN), (MODE))) \
1130 || (TARGET_CM_EMBMEDANY \
1131 && text_segment_operand ((IN), (MODE)))) \
1136 #define SECONDARY_OUTPUT_RELOAD_CLASS(CLASS, MODE, IN) \
1137 ((FP_REG_CLASS_P (CLASS) \
1138 && ((MODE) == HImode || (MODE) == QImode) \
1139 && (GET_CODE (IN) == MEM \
1140 || ((GET_CODE (IN) == REG || GET_CODE (IN) == SUBREG) \
1141 && true_regnum (IN) == -1))) \
1143 : ((CLASS) == EXTRA_FP_REGS && (MODE) == DFmode \
1144 && GET_CODE (IN) == MEM && TARGET_ARCH32 \
1145 && ! mem_min_alignment ((IN), 8)) \
1147 : (((TARGET_CM_MEDANY \
1148 && symbolic_operand ((IN), (MODE))) \
1149 || (TARGET_CM_EMBMEDANY \
1150 && text_segment_operand ((IN), (MODE)))) \
1155 /* On SPARC it is not possible to directly move data between
1156 GENERAL_REGS and FP_REGS. */
1157 #define SECONDARY_MEMORY_NEEDED(CLASS1, CLASS2, MODE) \
1158 (FP_REG_CLASS_P (CLASS1) != FP_REG_CLASS_P (CLASS2))
1160 /* Get_secondary_mem widens its argument to BITS_PER_WORD which loses on v9
1161 because the movsi and movsf patterns don't handle r/f moves.
1162 For v8 we copy the default definition. */
1163 #define SECONDARY_MEMORY_NEEDED_MODE(MODE) \
1165 ? (GET_MODE_BITSIZE (MODE) < 32 \
1166 ? mode_for_size (32, GET_MODE_CLASS (MODE), 0) \
1168 : (GET_MODE_BITSIZE (MODE) < BITS_PER_WORD \
1169 ? mode_for_size (BITS_PER_WORD, GET_MODE_CLASS (MODE), 0) \
1172 /* Return the maximum number of consecutive registers
1173 needed to represent mode MODE in a register of class CLASS. */
1174 /* On SPARC, this is the size of MODE in words. */
1175 #define CLASS_MAX_NREGS(CLASS, MODE) \
1176 (FP_REG_CLASS_P (CLASS) ? (GET_MODE_SIZE (MODE) + 3) / 4 \
1177 : (GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
1179 /* Stack layout; function entry, exit and calling. */
1181 /* Define this if pushing a word on the stack
1182 makes the stack pointer a smaller address. */
1183 #define STACK_GROWS_DOWNWARD
1185 /* Define this to nonzero if the nominal address of the stack frame
1186 is at the high-address end of the local variables;
1187 that is, each additional local variable allocated
1188 goes at a more negative offset in the frame. */
1189 #define FRAME_GROWS_DOWNWARD 1
1191 /* Offset within stack frame to start allocating local variables at.
1192 If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
1193 first local allocated. Otherwise, it is the offset to the BEGINNING
1194 of the first local allocated. */
1195 #define STARTING_FRAME_OFFSET 0
1197 /* Offset of first parameter from the argument pointer register value.
1198 !v9: This is 64 for the ins and locals, plus 4 for the struct-return reg
1199 even if this function isn't going to use it.
1200 v9: This is 128 for the ins and locals. */
1201 #define FIRST_PARM_OFFSET(FNDECL) \
1202 (TARGET_ARCH64 ? 16 * UNITS_PER_WORD : STRUCT_VALUE_OFFSET + UNITS_PER_WORD)
1204 /* Offset from the argument pointer register value to the CFA.
1205 This is different from FIRST_PARM_OFFSET because the register window
1206 comes between the CFA and the arguments. */
1207 #define ARG_POINTER_CFA_OFFSET(FNDECL) 0
1209 /* When a parameter is passed in a register, stack space is still
1211 !v9: All 6 possible integer registers have backing store allocated.
1212 v9: Only space for the arguments passed is allocated. */
1213 /* ??? Ideally, we'd use zero here (as the minimum), but zero has special
1214 meaning to the backend. Further, we need to be able to detect if a
1215 varargs/unprototyped function is called, as they may want to spill more
1216 registers than we've provided space. Ugly, ugly. So for now we retain
1217 all 6 slots even for v9. */
1218 #define REG_PARM_STACK_SPACE(DECL) (6 * UNITS_PER_WORD)
1220 /* Definitions for register elimination. */
1222 #define ELIMINABLE_REGS \
1223 {{ FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
1224 { FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM} }
1226 /* We always pretend that this is a leaf function because if it's not,
1227 there's no point in trying to eliminate the frame pointer. If it
1228 is a leaf function, we guessed right! */
1229 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
1231 if ((TO) == STACK_POINTER_REGNUM) \
1232 (OFFSET) = sparc_compute_frame_size (get_frame_size (), 1); \
1235 (OFFSET) += SPARC_STACK_BIAS; \
1238 /* Keep the stack pointer constant throughout the function.
1239 This is both an optimization and a necessity: longjmp
1240 doesn't behave itself when the stack pointer moves within
1242 #define ACCUMULATE_OUTGOING_ARGS 1
1244 /* Define this macro if the target machine has "register windows". This
1245 C expression returns the register number as seen by the called function
1246 corresponding to register number OUT as seen by the calling function.
1247 Return OUT if register number OUT is not an outbound register. */
1249 #define INCOMING_REGNO(OUT) \
1250 (((OUT) < 8 || (OUT) > 15) ? (OUT) : (OUT) + 16)
1252 /* Define this macro if the target machine has "register windows". This
1253 C expression returns the register number as seen by the calling function
1254 corresponding to register number IN as seen by the called function.
1255 Return IN if register number IN is not an inbound register. */
1257 #define OUTGOING_REGNO(IN) \
1258 (((IN) < 24 || (IN) > 31) ? (IN) : (IN) - 16)
1260 /* Define this macro if the target machine has register windows. This
1261 C expression returns true if the register is call-saved but is in the
1264 #define LOCAL_REGNO(REGNO) \
1265 ((REGNO) >= 16 && (REGNO) <= 31)
1267 /* Define the size of space to allocate for the return value of an
1270 #define APPLY_RESULT_SIZE (TARGET_ARCH64 ? 24 : 16)
1272 /* 1 if N is a possible register number for function argument passing.
1273 On SPARC, these are the "output" registers. v9 also uses %f0-%f31. */
1275 #define FUNCTION_ARG_REGNO_P(N) \
1277 ? (((N) >= 8 && (N) <= 13) || ((N) >= 32 && (N) <= 63)) \
1278 : ((N) >= 8 && (N) <= 13))
1280 /* Define a data type for recording info about an argument list
1281 during the scan of that argument list. This data type should
1282 hold all necessary information about the function itself
1283 and about the args processed so far, enough to enable macros
1284 such as FUNCTION_ARG to determine where the next arg should go.
1286 On SPARC (!v9), this is a single integer, which is a number of words
1287 of arguments scanned so far (including the invisible argument,
1288 if any, which holds the structure-value-address).
1289 Thus 7 or more means all following args should go on the stack.
1291 For v9, we also need to know whether a prototype is present. */
1294 int words; /* number of words passed so far */
1295 int prototype_p; /* nonzero if a prototype is present */
1296 int libcall_p; /* nonzero if a library call */
1298 #define CUMULATIVE_ARGS struct sparc_args
1300 /* Initialize a variable CUM of type CUMULATIVE_ARGS
1301 for a call to a function whose data type is FNTYPE.
1302 For a library call, FNTYPE is 0. */
1304 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \
1305 init_cumulative_args (& (CUM), (FNTYPE), (LIBNAME), (FNDECL));
1307 /* If defined, a C expression which determines whether, and in which direction,
1308 to pad out an argument with extra space. The value should be of type
1309 `enum direction': either `upward' to pad above the argument,
1310 `downward' to pad below, or `none' to inhibit padding. */
1312 #define FUNCTION_ARG_PADDING(MODE, TYPE) \
1313 function_arg_padding ((MODE), (TYPE))
1316 /* Generate the special assembly code needed to tell the assembler whatever
1317 it might need to know about the return value of a function.
1319 For SPARC assemblers, we need to output a .proc pseudo-op which conveys
1320 information to the assembler relating to peephole optimization (done in
1323 #define ASM_DECLARE_RESULT(FILE, RESULT) \
1324 fprintf ((FILE), "\t.proc\t0%lo\n", sparc_type_code (TREE_TYPE (RESULT)))
1326 /* Output the special assembly code needed to tell the assembler some
1327 register is used as global register variable.
1329 SPARC 64bit psABI declares registers %g2 and %g3 as application
1330 registers and %g6 and %g7 as OS registers. Any object using them
1331 should declare (for %g2/%g3 has to, for %g6/%g7 can) that it uses them
1332 and how they are used (scratch or some global variable).
1333 Linker will then refuse to link together objects which use those
1334 registers incompatibly.
1336 Unless the registers are used for scratch, two different global
1337 registers cannot be declared to the same name, so in the unlikely
1338 case of a global register variable occupying more than one register
1339 we prefix the second and following registers with .gnu.part1. etc. */
1341 extern GTY(()) char sparc_hard_reg_printed[8];
1343 #ifdef HAVE_AS_REGISTER_PSEUDO_OP
1344 #define ASM_DECLARE_REGISTER_GLOBAL(FILE, DECL, REGNO, NAME) \
1346 if (TARGET_ARCH64) \
1348 int end = HARD_REGNO_NREGS ((REGNO), DECL_MODE (decl)) + (REGNO); \
1350 for (reg = (REGNO); reg < 8 && reg < end; reg++) \
1351 if ((reg & ~1) == 2 || (reg & ~1) == 6) \
1353 if (reg == (REGNO)) \
1354 fprintf ((FILE), "\t.register\t%%g%d, %s\n", reg, (NAME)); \
1356 fprintf ((FILE), "\t.register\t%%g%d, .gnu.part%d.%s\n", \
1357 reg, reg - (REGNO), (NAME)); \
1358 sparc_hard_reg_printed[reg] = 1; \
1365 /* Emit rtl for profiling. */
1366 #define PROFILE_HOOK(LABEL) sparc_profile_hook (LABEL)
1368 /* All the work done in PROFILE_HOOK, but still required. */
1369 #define FUNCTION_PROFILER(FILE, LABELNO) do { } while (0)
1371 /* Set the name of the mcount function for the system. */
1372 #define MCOUNT_FUNCTION "*mcount"
1374 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
1375 the stack pointer does not matter. The value is tested only in
1376 functions that have frame pointers.
1377 No definition is equivalent to always zero. */
1379 #define EXIT_IGNORE_STACK \
1380 (get_frame_size () != 0 \
1381 || cfun->calls_alloca || crtl->outgoing_args_size)
1383 /* Define registers used by the epilogue and return instruction. */
1384 #define EPILOGUE_USES(REGNO) ((REGNO) == 31 \
1385 || (crtl->calls_eh_return && (REGNO) == 1))
1387 /* Length in units of the trampoline for entering a nested function. */
1389 #define TRAMPOLINE_SIZE (TARGET_ARCH64 ? 32 : 16)
1391 #define TRAMPOLINE_ALIGNMENT 128 /* 16 bytes */
1393 /* Generate RTL to flush the register windows so as to make arbitrary frames
1395 #define SETUP_FRAME_ADDRESSES() \
1396 emit_insn (gen_flush_register_windows ())
1398 /* Given an rtx for the address of a frame,
1399 return an rtx for the address of the word in the frame
1400 that holds the dynamic chain--the previous frame's address. */
1401 #define DYNAMIC_CHAIN_ADDRESS(frame) \
1402 plus_constant (frame, 14 * UNITS_PER_WORD + SPARC_STACK_BIAS)
1404 /* Given an rtx for the frame pointer,
1405 return an rtx for the address of the frame. */
1406 #define FRAME_ADDR_RTX(frame) plus_constant (frame, SPARC_STACK_BIAS)
1408 /* The return address isn't on the stack, it is in a register, so we can't
1409 access it from the current frame pointer. We can access it from the
1410 previous frame pointer though by reading a value from the register window
1412 #define RETURN_ADDR_IN_PREVIOUS_FRAME
1414 /* This is the offset of the return address to the true next instruction to be
1415 executed for the current function. */
1416 #define RETURN_ADDR_OFFSET \
1417 (8 + 4 * (! TARGET_ARCH64 && cfun->returns_struct))
1419 /* The current return address is in %i7. The return address of anything
1420 farther back is in the register window save area at [%fp+60]. */
1421 /* ??? This ignores the fact that the actual return address is +8 for normal
1422 returns, and +12 for structure returns. */
1423 #define RETURN_ADDR_RTX(count, frame) \
1425 ? gen_rtx_REG (Pmode, 31) \
1426 : gen_rtx_MEM (Pmode, \
1427 memory_address (Pmode, plus_constant (frame, \
1428 15 * UNITS_PER_WORD \
1429 + SPARC_STACK_BIAS))))
1431 /* Before the prologue, the return address is %o7 + 8. OK, sometimes it's
1432 +12, but always using +8 is close enough for frame unwind purposes.
1433 Actually, just using %o7 is close enough for unwinding, but %o7+8
1434 is something you can return to. */
1435 #define INCOMING_RETURN_ADDR_RTX \
1436 plus_constant (gen_rtx_REG (word_mode, 15), 8)
1437 #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (15)
1439 /* The offset from the incoming value of %sp to the top of the stack frame
1440 for the current function. On sparc64, we have to account for the stack
1442 #define INCOMING_FRAME_SP_OFFSET SPARC_STACK_BIAS
1444 /* Describe how we implement __builtin_eh_return. */
1445 #define EH_RETURN_DATA_REGNO(N) ((N) < 4 ? (N) + 24 : INVALID_REGNUM)
1446 #define EH_RETURN_STACKADJ_RTX gen_rtx_REG (Pmode, 1) /* %g1 */
1447 #define EH_RETURN_HANDLER_RTX gen_rtx_REG (Pmode, 31) /* %i7 */
1449 /* Select a format to encode pointers in exception handling data. CODE
1450 is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is
1451 true if the symbol may be affected by dynamic relocations.
1453 If assembler and linker properly support .uaword %r_disp32(foo),
1454 then use PC relative 32-bit relocations instead of absolute relocs
1455 for shared libraries. On sparc64, use pc relative 32-bit relocs even
1456 for binaries, to save memory.
1458 binutils 2.12 would emit a R_SPARC_DISP32 dynamic relocation if the
1459 symbol %r_disp32() is against was not local, but .hidden. In that
1460 case, we have to use DW_EH_PE_absptr for pic personality. */
1461 #ifdef HAVE_AS_SPARC_UA_PCREL
1462 #ifdef HAVE_AS_SPARC_UA_PCREL_HIDDEN
1463 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
1465 ? (GLOBAL ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4\
1466 : ((TARGET_ARCH64 && ! GLOBAL) \
1467 ? (DW_EH_PE_pcrel | DW_EH_PE_sdata4) \
1470 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
1472 ? (GLOBAL ? DW_EH_PE_absptr : (DW_EH_PE_pcrel | DW_EH_PE_sdata4)) \
1473 : ((TARGET_ARCH64 && ! GLOBAL) \
1474 ? (DW_EH_PE_pcrel | DW_EH_PE_sdata4) \
1478 /* Emit a PC-relative relocation. */
1479 #define ASM_OUTPUT_DWARF_PCREL(FILE, SIZE, LABEL) \
1481 fputs (integer_asm_op (SIZE, FALSE), FILE); \
1482 fprintf (FILE, "%%r_disp%d(", SIZE * 8); \
1483 assemble_name (FILE, LABEL); \
1484 fputc (')', FILE); \
1488 /* Addressing modes, and classification of registers for them. */
1490 /* Macros to check register numbers against specific register classes. */
1492 /* These assume that REGNO is a hard or pseudo reg number.
1493 They give nonzero only if REGNO is a hard reg of the suitable class
1494 or a pseudo reg currently allocated to a suitable hard reg.
1495 Since they use reg_renumber, they are safe only once reg_renumber
1496 has been allocated, which happens in local-alloc.c. */
1498 #define REGNO_OK_FOR_INDEX_P(REGNO) \
1499 ((REGNO) < 32 || (unsigned) reg_renumber[REGNO] < (unsigned)32 \
1500 || (REGNO) == FRAME_POINTER_REGNUM \
1501 || reg_renumber[REGNO] == FRAME_POINTER_REGNUM)
1503 #define REGNO_OK_FOR_BASE_P(REGNO) REGNO_OK_FOR_INDEX_P (REGNO)
1505 #define REGNO_OK_FOR_FP_P(REGNO) \
1506 (((unsigned) (REGNO) - 32 < (TARGET_V9 ? (unsigned)64 : (unsigned)32)) \
1507 || ((unsigned) reg_renumber[REGNO] - 32 < (TARGET_V9 ? (unsigned)64 : (unsigned)32)))
1508 #define REGNO_OK_FOR_CCFP_P(REGNO) \
1510 && (((unsigned) (REGNO) - 96 < (unsigned)4) \
1511 || ((unsigned) reg_renumber[REGNO] - 96 < (unsigned)4)))
1513 /* Now macros that check whether X is a register and also,
1514 strictly, whether it is in a specified class.
1516 These macros are specific to the SPARC, and may be used only
1517 in code for printing assembler insns and in conditions for
1518 define_optimization. */
1520 /* 1 if X is an fp register. */
1522 #define FP_REG_P(X) (REG_P (X) && REGNO_OK_FOR_FP_P (REGNO (X)))
1524 /* Is X, a REG, an in or global register? i.e. is regno 0..7 or 24..31 */
1525 #define IN_OR_GLOBAL_P(X) (REGNO (X) < 8 || (REGNO (X) >= 24 && REGNO (X) <= 31))
1527 /* Maximum number of registers that can appear in a valid memory address. */
1529 #define MAX_REGS_PER_ADDRESS 2
1531 /* Recognize any constant value that is a valid address.
1532 When PIC, we do not accept an address that would require a scratch reg
1533 to load into a register. */
1535 #define CONSTANT_ADDRESS_P(X) constant_address_p (X)
1537 /* Define this, so that when PIC, reload won't try to reload invalid
1538 addresses which require two reload registers. */
1540 #define LEGITIMATE_PIC_OPERAND_P(X) legitimate_pic_operand_p (X)
1542 /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
1543 and check its validity for a certain class.
1544 We have two alternate definitions for each of them.
1545 The usual definition accepts all pseudo regs; the other rejects
1546 them unless they have been allocated suitable hard regs.
1547 The symbol REG_OK_STRICT causes the latter definition to be used.
1549 Most source files want to accept pseudo regs in the hope that
1550 they will get allocated to the class that the insn wants them to be in.
1551 Source files for reload pass need to be strict.
1552 After reload, it makes no difference, since pseudo regs have
1553 been eliminated by then. */
1555 #ifndef REG_OK_STRICT
1557 /* Nonzero if X is a hard reg that can be used as an index
1558 or if it is a pseudo reg. */
1559 #define REG_OK_FOR_INDEX_P(X) \
1561 || REGNO (X) == FRAME_POINTER_REGNUM \
1562 || REGNO (X) >= FIRST_PSEUDO_REGISTER)
1564 /* Nonzero if X is a hard reg that can be used as a base reg
1565 or if it is a pseudo reg. */
1566 #define REG_OK_FOR_BASE_P(X) REG_OK_FOR_INDEX_P (X)
1570 /* Nonzero if X is a hard reg that can be used as an index. */
1571 #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
1572 /* Nonzero if X is a hard reg that can be used as a base reg. */
1573 #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
1577 /* Should gcc use [%reg+%lo(xx)+offset] addresses? */
1579 #ifdef HAVE_AS_OFFSETABLE_LO10
1580 #define USE_AS_OFFSETABLE_LO10 1
1582 #define USE_AS_OFFSETABLE_LO10 0
1585 /* On SPARC, the actual legitimate addresses must be REG+REG or REG+SMALLINT
1586 ordinarily. This changes a bit when generating PIC. The details are
1587 in sparc.c's implementation of TARGET_LEGITIMATE_ADDRESS_P. */
1589 #define SYMBOLIC_CONST(X) symbolic_operand (X, VOIDmode)
1591 #define RTX_OK_FOR_BASE_P(X) \
1592 ((GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) \
1593 || (GET_CODE (X) == SUBREG \
1594 && GET_CODE (SUBREG_REG (X)) == REG \
1595 && REG_OK_FOR_BASE_P (SUBREG_REG (X))))
1597 #define RTX_OK_FOR_INDEX_P(X) \
1598 ((GET_CODE (X) == REG && REG_OK_FOR_INDEX_P (X)) \
1599 || (GET_CODE (X) == SUBREG \
1600 && GET_CODE (SUBREG_REG (X)) == REG \
1601 && REG_OK_FOR_INDEX_P (SUBREG_REG (X))))
1603 #define RTX_OK_FOR_OFFSET_P(X) \
1604 (GET_CODE (X) == CONST_INT && INTVAL (X) >= -0x1000 && INTVAL (X) < 0x1000 - 8)
1606 #define RTX_OK_FOR_OLO10_P(X) \
1607 (GET_CODE (X) == CONST_INT && INTVAL (X) >= -0x1000 && INTVAL (X) < 0xc00 - 8)
1610 /* Try a machine-dependent way of reloading an illegitimate address
1611 operand. If we find one, push the reload and jump to WIN. This
1612 macro is used in only one place: `find_reloads_address' in reload.c. */
1613 #define LEGITIMIZE_RELOAD_ADDRESS(X,MODE,OPNUM,TYPE,IND_LEVELS,WIN) \
1616 (X) = sparc_legitimize_reload_address ((X), (MODE), (OPNUM), \
1617 (int)(TYPE), (IND_LEVELS), &win); \
1622 /* Specify the machine mode that this machine uses
1623 for the index in the tablejump instruction. */
1624 /* If we ever implement any of the full models (such as CM_FULLANY),
1625 this has to be DImode in that case */
1626 #ifdef HAVE_GAS_SUBSECTION_ORDERING
1627 #define CASE_VECTOR_MODE \
1628 (! TARGET_PTR64 ? SImode : flag_pic ? SImode : TARGET_CM_MEDLOW ? SImode : DImode)
1630 /* If assembler does not have working .subsection -1, we use DImode for pic, as otherwise
1631 we have to sign extend which slows things down. */
1632 #define CASE_VECTOR_MODE \
1633 (! TARGET_PTR64 ? SImode : flag_pic ? DImode : TARGET_CM_MEDLOW ? SImode : DImode)
1636 /* Define this as 1 if `char' should by default be signed; else as 0. */
1637 #define DEFAULT_SIGNED_CHAR 1
1639 /* Max number of bytes we can move from memory to memory
1640 in one reasonably fast instruction. */
1643 /* If a memory-to-memory move would take MOVE_RATIO or more simple
1644 move-instruction pairs, we will do a movmem or libcall instead. */
1646 #define MOVE_RATIO(speed) ((speed) ? 8 : 3)
1648 /* Define if operations between registers always perform the operation
1649 on the full register even if a narrower mode is specified. */
1650 #define WORD_REGISTER_OPERATIONS
1652 /* Define if loading in MODE, an integral mode narrower than BITS_PER_WORD
1653 will either zero-extend or sign-extend. The value of this macro should
1654 be the code that says which one of the two operations is implicitly
1655 done, UNKNOWN if none. */
1656 #define LOAD_EXTEND_OP(MODE) ZERO_EXTEND
1658 /* Nonzero if access to memory by bytes is slow and undesirable.
1659 For RISC chips, it means that access to memory by bytes is no
1660 better than access by words when possible, so grab a whole word
1661 and maybe make use of that. */
1662 #define SLOW_BYTE_ACCESS 1
1664 /* Define this to be nonzero if shift instructions ignore all but the low-order
1666 #define SHIFT_COUNT_TRUNCATED 1
1668 /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
1669 is done just by pretending it is already truncated. */
1670 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
1672 /* Given a comparison code (EQ, NE, etc.) and the first operand of a COMPARE,
1673 return the mode to be used for the comparison. For floating-point,
1674 CCFP[E]mode is used. CC_NOOVmode should be used when the first operand
1675 is a PLUS, MINUS, NEG, or ASHIFT. CCmode should be used when no special
1676 processing is needed. */
1677 #define SELECT_CC_MODE(OP,X,Y) select_cc_mode ((OP), (X), (Y))
1679 /* Return nonzero if MODE implies a floating point inequality can be
1680 reversed. For SPARC this is always true because we have a full
1681 compliment of ordered and unordered comparisons, but until generic
1682 code knows how to reverse it correctly we keep the old definition. */
1683 #define REVERSIBLE_CC_MODE(MODE) ((MODE) != CCFPEmode && (MODE) != CCFPmode)
1685 /* A function address in a call instruction for indexing purposes. */
1686 #define FUNCTION_MODE Pmode
1688 /* Define this if addresses of constant functions
1689 shouldn't be put through pseudo regs where they can be cse'd.
1690 Desirable on machines where ordinary constants are expensive
1691 but a CALL with constant address is cheap. */
1692 #define NO_FUNCTION_CSE
1694 /* alloca should avoid clobbering the old register save area. */
1695 #define SETJMP_VIA_SAVE_AREA
1697 /* The _Q_* comparison libcalls return booleans. */
1698 #define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) ((MODE) == TFmode)
1700 /* Assume by default that the _Qp_* 64-bit libcalls are implemented such
1701 that the inputs are fully consumed before the output memory is clobbered. */
1703 #define TARGET_BUGGY_QP_LIB 0
1705 /* Assume by default that we do not have the Solaris-specific conversion
1706 routines nor 64-bit integer multiply and divide routines. */
1708 #define SUN_CONVERSION_LIBFUNCS 0
1709 #define DITF_CONVERSION_LIBFUNCS 0
1710 #define SUN_INTEGER_MULTIPLY_64 0
1712 /* Provide the cost of a branch. For pre-v9 processors we use
1713 a value of 3 to take into account the potential annulling of
1714 the delay slot (which ends up being a bubble in the pipeline slot)
1715 plus a cycle to take into consideration the instruction cache
1718 On v9 and later, which have branch prediction facilities, we set
1719 it to the depth of the pipeline as that is the cost of a
1720 mispredicted branch.
1722 On Niagara, normal branches insert 3 bubbles into the pipe
1723 and annulled branches insert 4 bubbles.
1725 On Niagara-2, a not-taken branch costs 1 cycle whereas a taken
1726 branch costs 6 cycles. */
1728 #define BRANCH_COST(speed_p, predictable_p) \
1729 ((sparc_cpu == PROCESSOR_V9 \
1730 || sparc_cpu == PROCESSOR_ULTRASPARC) \
1732 : (sparc_cpu == PROCESSOR_ULTRASPARC3 \
1734 : (sparc_cpu == PROCESSOR_NIAGARA \
1736 : (sparc_cpu == PROCESSOR_NIAGARA2 \
1740 /* Control the assembler format that we output. */
1742 /* A C string constant describing how to begin a comment in the target
1743 assembler language. The compiler assumes that the comment will end at
1744 the end of the line. */
1746 #define ASM_COMMENT_START "!"
1748 /* Output to assembler file text saying following lines
1749 may contain character constants, extra white space, comments, etc. */
1751 #define ASM_APP_ON ""
1753 /* Output to assembler file text saying following lines
1754 no longer contain unusual constructs. */
1756 #define ASM_APP_OFF ""
1758 /* How to refer to registers in assembler output.
1759 This sequence is indexed by compiler's hard-register-number (see above). */
1761 #define REGISTER_NAMES \
1762 {"%g0", "%g1", "%g2", "%g3", "%g4", "%g5", "%g6", "%g7", \
1763 "%o0", "%o1", "%o2", "%o3", "%o4", "%o5", "%sp", "%o7", \
1764 "%l0", "%l1", "%l2", "%l3", "%l4", "%l5", "%l6", "%l7", \
1765 "%i0", "%i1", "%i2", "%i3", "%i4", "%i5", "%fp", "%i7", \
1766 "%f0", "%f1", "%f2", "%f3", "%f4", "%f5", "%f6", "%f7", \
1767 "%f8", "%f9", "%f10", "%f11", "%f12", "%f13", "%f14", "%f15", \
1768 "%f16", "%f17", "%f18", "%f19", "%f20", "%f21", "%f22", "%f23", \
1769 "%f24", "%f25", "%f26", "%f27", "%f28", "%f29", "%f30", "%f31", \
1770 "%f32", "%f33", "%f34", "%f35", "%f36", "%f37", "%f38", "%f39", \
1771 "%f40", "%f41", "%f42", "%f43", "%f44", "%f45", "%f46", "%f47", \
1772 "%f48", "%f49", "%f50", "%f51", "%f52", "%f53", "%f54", "%f55", \
1773 "%f56", "%f57", "%f58", "%f59", "%f60", "%f61", "%f62", "%f63", \
1774 "%fcc0", "%fcc1", "%fcc2", "%fcc3", "%icc", "%sfp" }
1776 /* Define additional names for use in asm clobbers and asm declarations. */
1778 #define ADDITIONAL_REGISTER_NAMES \
1779 {{"ccr", SPARC_ICC_REG}, {"cc", SPARC_ICC_REG}}
1781 /* On Sun 4, this limit is 2048. We use 1000 to be safe, since the length
1782 can run past this up to a continuation point. Once we used 1500, but
1783 a single entry in C++ can run more than 500 bytes, due to the length of
1784 mangled symbol names. dbxout.c should really be fixed to do
1785 continuations when they are actually needed instead of trying to
1787 #define DBX_CONTIN_LENGTH 1000
1789 /* This is how to output a command to make the user-level label named NAME
1790 defined for reference from other files. */
1792 /* Globalizing directive for a label. */
1793 #define GLOBAL_ASM_OP "\t.global "
1795 /* The prefix to add to user-visible assembler symbols. */
1797 #define USER_LABEL_PREFIX "_"
1799 /* This is how to store into the string LABEL
1800 the symbol_ref name of an internal numbered label where
1801 PREFIX is the class of label and NUM is the number within the class.
1802 This is suitable for output with `assemble_name'. */
1804 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
1805 sprintf ((LABEL), "*%s%ld", (PREFIX), (long)(NUM))
1807 /* This is how we hook in and defer the case-vector until the end of
1809 #define ASM_OUTPUT_ADDR_VEC(LAB,VEC) \
1810 sparc_defer_case_vector ((LAB),(VEC), 0)
1812 #define ASM_OUTPUT_ADDR_DIFF_VEC(LAB,VEC) \
1813 sparc_defer_case_vector ((LAB),(VEC), 1)
1815 /* This is how to output an element of a case-vector that is absolute. */
1817 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
1820 ASM_GENERATE_INTERNAL_LABEL (label, "L", VALUE); \
1821 if (CASE_VECTOR_MODE == SImode) \
1822 fprintf (FILE, "\t.word\t"); \
1824 fprintf (FILE, "\t.xword\t"); \
1825 assemble_name (FILE, label); \
1826 fputc ('\n', FILE); \
1829 /* This is how to output an element of a case-vector that is relative.
1830 (SPARC uses such vectors only when generating PIC.) */
1832 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
1835 ASM_GENERATE_INTERNAL_LABEL (label, "L", (VALUE)); \
1836 if (CASE_VECTOR_MODE == SImode) \
1837 fprintf (FILE, "\t.word\t"); \
1839 fprintf (FILE, "\t.xword\t"); \
1840 assemble_name (FILE, label); \
1841 ASM_GENERATE_INTERNAL_LABEL (label, "L", (REL)); \
1842 fputc ('-', FILE); \
1843 assemble_name (FILE, label); \
1844 fputc ('\n', FILE); \
1847 /* This is what to output before and after case-vector (both
1848 relative and absolute). If .subsection -1 works, we put case-vectors
1849 at the beginning of the current section. */
1851 #ifdef HAVE_GAS_SUBSECTION_ORDERING
1853 #define ASM_OUTPUT_ADDR_VEC_START(FILE) \
1854 fprintf(FILE, "\t.subsection\t-1\n")
1856 #define ASM_OUTPUT_ADDR_VEC_END(FILE) \
1857 fprintf(FILE, "\t.previous\n")
1861 /* This is how to output an assembler line
1862 that says to advance the location counter
1863 to a multiple of 2**LOG bytes. */
1865 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
1867 fprintf (FILE, "\t.align %d\n", (1<<(LOG)))
1869 #define ASM_OUTPUT_SKIP(FILE,SIZE) \
1870 fprintf (FILE, "\t.skip "HOST_WIDE_INT_PRINT_UNSIGNED"\n", (SIZE))
1872 /* This says how to output an assembler line
1873 to define a global common symbol. */
1875 #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
1876 ( fputs ("\t.common ", (FILE)), \
1877 assemble_name ((FILE), (NAME)), \
1878 fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",\"bss\"\n", (SIZE)))
1880 /* This says how to output an assembler line to define a local common
1883 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGNED) \
1884 ( fputs ("\t.reserve ", (FILE)), \
1885 assemble_name ((FILE), (NAME)), \
1886 fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",\"bss\",%u\n", \
1887 (SIZE), ((ALIGNED) / BITS_PER_UNIT)))
1889 /* A C statement (sans semicolon) to output to the stdio stream
1890 FILE the assembler definition of uninitialized global DECL named
1891 NAME whose size is SIZE bytes and alignment is ALIGN bytes.
1892 Try to use asm_output_aligned_bss to implement this macro. */
1894 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
1896 ASM_OUTPUT_ALIGNED_LOCAL (FILE, NAME, SIZE, ALIGN); \
1899 #define IDENT_ASM_OP "\t.ident\t"
1901 /* Output #ident as a .ident. */
1903 #define ASM_OUTPUT_IDENT(FILE, NAME) \
1904 fprintf (FILE, "%s\"%s\"\n", IDENT_ASM_OP, NAME);
1906 /* Prettify the assembly. */
1908 extern int sparc_indent_opcode;
1910 #define ASM_OUTPUT_OPCODE(FILE, PTR) \
1912 if (sparc_indent_opcode) \
1915 sparc_indent_opcode = 0; \
1919 #define PRINT_OPERAND_PUNCT_VALID_P(CHAR) \
1920 ((CHAR) == '#' || (CHAR) == '*' || (CHAR) == '(' \
1921 || (CHAR) == ')' || (CHAR) == '_' || (CHAR) == '&')
1923 /* Print operand X (an rtx) in assembler syntax to file FILE.
1924 CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified.
1925 For `%' followed by punctuation, CODE is the punctuation and X is null. */
1927 #define PRINT_OPERAND(FILE, X, CODE) print_operand (FILE, X, CODE)
1929 /* Print a memory address as an operand to reference that memory location. */
1931 #define PRINT_OPERAND_ADDRESS(FILE, ADDR) \
1932 { register rtx base, index = 0; \
1934 register rtx addr = ADDR; \
1935 if (GET_CODE (addr) == REG) \
1936 fputs (reg_names[REGNO (addr)], FILE); \
1937 else if (GET_CODE (addr) == PLUS) \
1939 if (GET_CODE (XEXP (addr, 0)) == CONST_INT) \
1940 offset = INTVAL (XEXP (addr, 0)), base = XEXP (addr, 1);\
1941 else if (GET_CODE (XEXP (addr, 1)) == CONST_INT) \
1942 offset = INTVAL (XEXP (addr, 1)), base = XEXP (addr, 0);\
1944 base = XEXP (addr, 0), index = XEXP (addr, 1); \
1945 if (GET_CODE (base) == LO_SUM) \
1947 gcc_assert (USE_AS_OFFSETABLE_LO10 \
1949 && ! TARGET_CM_MEDMID); \
1950 output_operand (XEXP (base, 0), 0); \
1951 fputs ("+%lo(", FILE); \
1952 output_address (XEXP (base, 1)); \
1953 fprintf (FILE, ")+%d", offset); \
1957 fputs (reg_names[REGNO (base)], FILE); \
1959 fprintf (FILE, "%+d", offset); \
1960 else if (GET_CODE (index) == REG) \
1961 fprintf (FILE, "+%s", reg_names[REGNO (index)]); \
1962 else if (GET_CODE (index) == SYMBOL_REF \
1963 || GET_CODE (index) == LABEL_REF \
1964 || GET_CODE (index) == CONST) \
1965 fputc ('+', FILE), output_addr_const (FILE, index); \
1966 else gcc_unreachable (); \
1969 else if (GET_CODE (addr) == MINUS \
1970 && GET_CODE (XEXP (addr, 1)) == LABEL_REF) \
1972 output_addr_const (FILE, XEXP (addr, 0)); \
1973 fputs ("-(", FILE); \
1974 output_addr_const (FILE, XEXP (addr, 1)); \
1975 fputs ("-.)", FILE); \
1977 else if (GET_CODE (addr) == LO_SUM) \
1979 output_operand (XEXP (addr, 0), 0); \
1980 if (TARGET_CM_MEDMID) \
1981 fputs ("+%l44(", FILE); \
1983 fputs ("+%lo(", FILE); \
1984 output_address (XEXP (addr, 1)); \
1985 fputc (')', FILE); \
1987 else if (flag_pic && GET_CODE (addr) == CONST \
1988 && GET_CODE (XEXP (addr, 0)) == MINUS \
1989 && GET_CODE (XEXP (XEXP (addr, 0), 1)) == CONST \
1990 && GET_CODE (XEXP (XEXP (XEXP (addr, 0), 1), 0)) == MINUS \
1991 && XEXP (XEXP (XEXP (XEXP (addr, 0), 1), 0), 1) == pc_rtx) \
1993 addr = XEXP (addr, 0); \
1994 output_addr_const (FILE, XEXP (addr, 0)); \
1995 /* Group the args of the second CONST in parenthesis. */ \
1996 fputs ("-(", FILE); \
1997 /* Skip past the second CONST--it does nothing for us. */\
1998 output_addr_const (FILE, XEXP (XEXP (addr, 1), 0)); \
1999 /* Close the parenthesis. */ \
2000 fputc (')', FILE); \
2004 output_addr_const (FILE, addr); \
2008 /* TLS support defaulting to original Sun flavor. GNU extensions
2009 must be activated in separate configuration files. */
2011 #define TARGET_TLS 1
2013 #define TARGET_TLS 0
2016 #define TARGET_SUN_TLS TARGET_TLS
2017 #define TARGET_GNU_TLS 0
2019 /* The number of Pmode words for the setjmp buffer. */
2020 #define JMP_BUF_SIZE 12
2022 /* We use gcc _mcount for profiling. */
2023 #define NO_PROFILE_COUNTERS 0