1 /* Definitions of various defaults for tm.h macros.
2 Copyright (C) 1992, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
3 2005, 2007, 2008, 2009, 2010, 2011, 2012
4 Free Software Foundation, Inc.
5 Contributed by Ron Guilmette (rfg@monkeys.com)
7 This file is part of GCC.
9 GCC is free software; you can redistribute it and/or modify it under
10 the terms of the GNU General Public License as published by the Free
11 Software Foundation; either version 3, or (at your option) any later
14 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 Under Section 7 of GPL version 3, you are granted additional
20 permissions described in the GCC Runtime Library Exception, version
21 3.1, as published by the Free Software Foundation.
23 You should have received a copy of the GNU General Public License and
24 a copy of the GCC Runtime Library Exception along with this program;
25 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
26 <http://www.gnu.org/licenses/>. */
28 #ifndef GCC_DEFAULTS_H
29 #define GCC_DEFAULTS_H
31 /* How to start an assembler comment. */
32 #ifndef ASM_COMMENT_START
33 #define ASM_COMMENT_START ";#"
36 /* Store in OUTPUT a string (made with alloca) containing an
37 assembler-name for a local static variable or function named NAME.
38 LABELNO is an integer which is different for each call. */
41 # ifndef NO_DOT_IN_LABEL
42 # define ASM_PN_FORMAT "%s.%lu"
44 # ifndef NO_DOLLAR_IN_LABEL
45 # define ASM_PN_FORMAT "%s$%lu"
47 # define ASM_PN_FORMAT "__%s_%lu"
50 #endif /* ! ASM_PN_FORMAT */
52 #ifndef ASM_FORMAT_PRIVATE_NAME
53 # define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
54 do { const char *const name_ = (NAME); \
55 char *const output_ = (OUTPUT) = \
56 (char *) alloca (strlen (name_) + 32); \
57 sprintf (output_, ASM_PN_FORMAT, name_, (unsigned long)(LABELNO)); \
61 /* Choose a reasonable default for ASM_OUTPUT_ASCII. */
63 #ifndef ASM_OUTPUT_ASCII
64 #define ASM_OUTPUT_ASCII(MYFILE, MYSTRING, MYLENGTH) \
66 FILE *_hide_asm_out_file = (MYFILE); \
67 const unsigned char *_hide_p = (const unsigned char *) (MYSTRING); \
68 int _hide_thissize = (MYLENGTH); \
70 FILE *asm_out_file = _hide_asm_out_file; \
71 const unsigned char *p = _hide_p; \
72 int thissize = _hide_thissize; \
74 fprintf (asm_out_file, "\t.ascii \""); \
76 for (i = 0; i < thissize; i++) \
79 if (c == '\"' || c == '\\') \
80 putc ('\\', asm_out_file); \
82 putc (c, asm_out_file); \
85 fprintf (asm_out_file, "\\%o", c); \
86 /* After an octal-escape, if a digit follows, \
87 terminate one string constant and start another. \
88 The VAX assembler fails to stop reading the escape \
89 after three digits, so this is the only way we \
90 can get it to parse the data properly. */ \
91 if (i < thissize - 1 && ISDIGIT(p[i + 1])) \
92 fprintf (asm_out_file, "\"\n\t.ascii \""); \
95 fprintf (asm_out_file, "\"\n"); \
101 /* This is how we tell the assembler to equate two values. */
103 #ifndef ASM_OUTPUT_DEF
104 #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \
105 do { fprintf ((FILE), "%s", SET_ASM_OP); \
106 assemble_name (FILE, LABEL1); \
107 fprintf (FILE, ","); \
108 assemble_name (FILE, LABEL2); \
109 fprintf (FILE, "\n"); \
114 #ifndef IFUNC_ASM_TYPE
115 #define IFUNC_ASM_TYPE "gnu_indirect_function"
118 #ifndef TLS_COMMON_ASM_OP
119 #define TLS_COMMON_ASM_OP ".tls_common"
122 #if defined (HAVE_AS_TLS) && !defined (ASM_OUTPUT_TLS_COMMON)
123 #define ASM_OUTPUT_TLS_COMMON(FILE, DECL, NAME, SIZE) \
126 fprintf ((FILE), "\t%s\t", TLS_COMMON_ASM_OP); \
127 assemble_name ((FILE), (NAME)); \
128 fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", \
129 (SIZE), DECL_ALIGN (DECL) / BITS_PER_UNIT); \
134 /* Decide whether to defer emitting the assembler output for an equate
135 of two values. The default is to not defer output. */
136 #ifndef TARGET_DEFERRED_OUTPUT_DEFS
137 #define TARGET_DEFERRED_OUTPUT_DEFS(DECL,TARGET) false
140 /* This is how to output the definition of a user-level label named
141 NAME, such as the label on variable NAME. */
143 #ifndef ASM_OUTPUT_LABEL
144 #define ASM_OUTPUT_LABEL(FILE,NAME) \
146 assemble_name ((FILE), (NAME)); \
147 fputs (":\n", (FILE)); \
151 /* This is how to output the definition of a user-level label named
152 NAME, such as the label on a function. */
154 #ifndef ASM_OUTPUT_FUNCTION_LABEL
155 #define ASM_OUTPUT_FUNCTION_LABEL(FILE, NAME, DECL) \
156 ASM_OUTPUT_LABEL ((FILE), (NAME))
159 /* Output the definition of a compiler-generated label named NAME. */
160 #ifndef ASM_OUTPUT_INTERNAL_LABEL
161 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,NAME) \
163 assemble_name_raw ((FILE), (NAME)); \
164 fputs (":\n", (FILE)); \
168 /* This is how to output a reference to a user-level label named NAME. */
170 #ifndef ASM_OUTPUT_LABELREF
171 #define ASM_OUTPUT_LABELREF(FILE,NAME) \
173 fputs (user_label_prefix, (FILE)); \
174 fputs ((NAME), (FILE)); \
178 /* Allow target to print debug info labels specially. This is useful for
179 VLIW targets, since debug info labels should go into the middle of
180 instruction bundles instead of breaking them. */
182 #ifndef ASM_OUTPUT_DEBUG_LABEL
183 #define ASM_OUTPUT_DEBUG_LABEL(FILE, PREFIX, NUM) \
184 (*targetm.asm_out.internal_label) (FILE, PREFIX, NUM)
187 /* This is how we tell the assembler that a symbol is weak. */
188 #ifndef ASM_OUTPUT_WEAK_ALIAS
189 #if defined (ASM_WEAKEN_LABEL) && defined (ASM_OUTPUT_DEF)
190 #define ASM_OUTPUT_WEAK_ALIAS(STREAM, NAME, VALUE) \
193 ASM_WEAKEN_LABEL (STREAM, NAME); \
195 ASM_OUTPUT_DEF (STREAM, NAME, VALUE); \
201 /* This is how we tell the assembler that a symbol is a weak alias to
202 another symbol that doesn't require the other symbol to be defined.
203 Uses of the former will turn into weak uses of the latter, i.e.,
204 uses that, in case the latter is undefined, will not cause errors,
205 and will add it to the symbol table as weak undefined. However, if
206 the latter is referenced directly, a strong reference prevails. */
207 #ifndef ASM_OUTPUT_WEAKREF
208 #if defined HAVE_GAS_WEAKREF
209 #define ASM_OUTPUT_WEAKREF(FILE, DECL, NAME, VALUE) \
212 fprintf ((FILE), "\t.weakref\t"); \
213 assemble_name ((FILE), (NAME)); \
214 fprintf ((FILE), ","); \
215 assemble_name ((FILE), (VALUE)); \
216 fprintf ((FILE), "\n"); \
222 /* How to emit a .type directive. */
223 #ifndef ASM_OUTPUT_TYPE_DIRECTIVE
224 #if defined TYPE_ASM_OP && defined TYPE_OPERAND_FMT
225 #define ASM_OUTPUT_TYPE_DIRECTIVE(STREAM, NAME, TYPE) \
228 fputs (TYPE_ASM_OP, STREAM); \
229 assemble_name (STREAM, NAME); \
230 fputs (", ", STREAM); \
231 fprintf (STREAM, TYPE_OPERAND_FMT, TYPE); \
232 putc ('\n', STREAM); \
238 /* How to emit a .size directive. */
239 #ifndef ASM_OUTPUT_SIZE_DIRECTIVE
241 #define ASM_OUTPUT_SIZE_DIRECTIVE(STREAM, NAME, SIZE) \
244 HOST_WIDE_INT size_ = (SIZE); \
245 fputs (SIZE_ASM_OP, STREAM); \
246 assemble_name (STREAM, NAME); \
247 fprintf (STREAM, ", " HOST_WIDE_INT_PRINT_DEC "\n", size_); \
251 #define ASM_OUTPUT_MEASURED_SIZE(STREAM, NAME) \
254 fputs (SIZE_ASM_OP, STREAM); \
255 assemble_name (STREAM, NAME); \
256 fputs (", .-", STREAM); \
257 assemble_name (STREAM, NAME); \
258 putc ('\n', STREAM); \
265 /* This determines whether or not we support weak symbols. SUPPORTS_WEAK
266 must be a preprocessor constant. */
267 #ifndef SUPPORTS_WEAK
268 #if defined (ASM_WEAKEN_LABEL) || defined (ASM_WEAKEN_DECL)
269 #define SUPPORTS_WEAK 1
271 #define SUPPORTS_WEAK 0
275 /* This determines whether or not we support weak symbols during target
276 code generation. TARGET_SUPPORTS_WEAK can be any valid C expression. */
277 #ifndef TARGET_SUPPORTS_WEAK
278 #define TARGET_SUPPORTS_WEAK (SUPPORTS_WEAK)
281 /* This determines whether or not we support the discriminator
282 attribute in the .loc directive. */
283 #ifndef SUPPORTS_DISCRIMINATOR
284 #ifdef HAVE_GAS_DISCRIMINATOR
285 #define SUPPORTS_DISCRIMINATOR 1
287 #define SUPPORTS_DISCRIMINATOR 0
291 /* This determines whether or not we support link-once semantics. */
292 #ifndef SUPPORTS_ONE_ONLY
293 #ifdef MAKE_DECL_ONE_ONLY
294 #define SUPPORTS_ONE_ONLY 1
296 #define SUPPORTS_ONE_ONLY 0
300 /* This determines whether weak symbols must be left out of a static
301 archive's table of contents. Defining this macro to be nonzero has
302 the consequence that certain symbols will not be made weak that
303 otherwise would be. The C++ ABI requires this macro to be zero;
304 see the documentation. */
305 #ifndef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
306 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 0
309 /* This determines whether or not we need linkonce unwind information. */
310 #ifndef TARGET_USES_WEAK_UNWIND_INFO
311 #define TARGET_USES_WEAK_UNWIND_INFO 0
314 /* By default, there is no prefix on user-defined symbols. */
315 #ifndef USER_LABEL_PREFIX
316 #define USER_LABEL_PREFIX ""
319 /* If the target supports weak symbols, define TARGET_ATTRIBUTE_WEAK to
320 provide a weak attribute. Else define it to nothing.
322 This would normally belong in ansidecl.h, but SUPPORTS_WEAK is
323 not available at that time.
325 Note, this is only for use by target files which we know are to be
327 #ifndef TARGET_ATTRIBUTE_WEAK
329 # define TARGET_ATTRIBUTE_WEAK __attribute__ ((weak))
331 # define TARGET_ATTRIBUTE_WEAK
335 /* Determines whether we may use common symbols to represent one-only
336 semantics (a.k.a. "vague linkage"). */
337 #ifndef USE_COMMON_FOR_ONE_ONLY
338 # define USE_COMMON_FOR_ONE_ONLY 1
341 /* By default we can assume that all global symbols are in one namespace,
342 across all shared libraries. */
343 #ifndef MULTIPLE_SYMBOL_SPACES
344 # define MULTIPLE_SYMBOL_SPACES 0
347 /* If the target supports init_priority C++ attribute, give
348 SUPPORTS_INIT_PRIORITY a nonzero value. */
349 #ifndef SUPPORTS_INIT_PRIORITY
350 #define SUPPORTS_INIT_PRIORITY 1
351 #endif /* SUPPORTS_INIT_PRIORITY */
353 /* If we have a definition of INCOMING_RETURN_ADDR_RTX, assume that
354 the rest of the DWARF 2 frame unwind support is also provided. */
355 #if !defined (DWARF2_UNWIND_INFO) && defined (INCOMING_RETURN_ADDR_RTX)
356 #define DWARF2_UNWIND_INFO 1
359 /* If we have named sections, and we're using crtstuff to run ctors,
360 use them for registering eh frame information. */
361 #if defined (TARGET_ASM_NAMED_SECTION) && DWARF2_UNWIND_INFO \
362 && !defined(EH_FRAME_IN_DATA_SECTION)
363 #ifndef EH_FRAME_SECTION_NAME
364 #define EH_FRAME_SECTION_NAME ".eh_frame"
368 /* On many systems, different EH table encodings are used under
369 difference circumstances. Some will require runtime relocations;
370 some will not. For those that do not require runtime relocations,
371 we would like to make the table read-only. However, since the
372 read-only tables may need to be combined with read-write tables
373 that do require runtime relocation, it is not safe to make the
374 tables read-only unless the linker will merge read-only and
375 read-write sections into a single read-write section. If your
376 linker does not have this ability, but your system is such that no
377 encoding used with non-PIC code will ever require a runtime
378 relocation, then you can define EH_TABLES_CAN_BE_READ_ONLY to 1 in
379 your target configuration file. */
380 #ifndef EH_TABLES_CAN_BE_READ_ONLY
381 #ifdef HAVE_LD_RO_RW_SECTION_MIXING
382 #define EH_TABLES_CAN_BE_READ_ONLY 1
384 #define EH_TABLES_CAN_BE_READ_ONLY 0
388 /* If we have named section and we support weak symbols, then use the
389 .jcr section for recording java classes which need to be registered
390 at program start-up time. */
391 #if defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK
392 #ifndef JCR_SECTION_NAME
393 #define JCR_SECTION_NAME ".jcr"
397 /* This decision to use a .jcr section can be overridden by defining
398 USE_JCR_SECTION to 0 in target file. This is necessary if target
399 can define JCR_SECTION_NAME but does not have crtstuff or
400 linker support for .jcr section. */
401 #ifndef TARGET_USE_JCR_SECTION
402 #ifdef JCR_SECTION_NAME
403 #define TARGET_USE_JCR_SECTION 1
405 #define TARGET_USE_JCR_SECTION 0
409 /* Number of hardware registers that go into the DWARF-2 unwind info.
410 If not defined, equals FIRST_PSEUDO_REGISTER */
412 #ifndef DWARF_FRAME_REGISTERS
413 #define DWARF_FRAME_REGISTERS FIRST_PSEUDO_REGISTER
416 /* Offsets recorded in opcodes are a multiple of this alignment factor. */
417 #ifndef DWARF_CIE_DATA_ALIGNMENT
418 #ifdef STACK_GROWS_DOWNWARD
419 #define DWARF_CIE_DATA_ALIGNMENT (-((int) UNITS_PER_WORD))
421 #define DWARF_CIE_DATA_ALIGNMENT ((int) UNITS_PER_WORD)
425 /* The DWARF 2 CFA column which tracks the return address. Normally this
426 is the column for PC, or the first column after all of the hard
428 #ifndef DWARF_FRAME_RETURN_COLUMN
430 #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (PC_REGNUM)
432 #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGISTERS
436 /* How to renumber registers for dbx and gdb. If not defined, assume
437 no renumbering is necessary. */
439 #ifndef DBX_REGISTER_NUMBER
440 #define DBX_REGISTER_NUMBER(REGNO) (REGNO)
443 /* The mapping from gcc register number to DWARF 2 CFA column number.
444 By default, we just provide columns for all registers. */
445 #ifndef DWARF_FRAME_REGNUM
446 #define DWARF_FRAME_REGNUM(REG) DBX_REGISTER_NUMBER (REG)
449 /* Map register numbers held in the call frame info that gcc has
450 collected using DWARF_FRAME_REGNUM to those that should be output in
451 .debug_frame and .eh_frame. */
452 #ifndef DWARF2_FRAME_REG_OUT
453 #define DWARF2_FRAME_REG_OUT(REGNO, FOR_EH) (REGNO)
456 /* The size of addresses as they appear in the Dwarf 2 data.
457 Some architectures use word addresses to refer to code locations,
458 but Dwarf 2 info always uses byte addresses. On such machines,
459 Dwarf 2 addresses need to be larger than the architecture's
461 #ifndef DWARF2_ADDR_SIZE
462 #define DWARF2_ADDR_SIZE (POINTER_SIZE / BITS_PER_UNIT)
465 /* The size in bytes of a DWARF field indicating an offset or length
466 relative to a debug info section, specified to be 4 bytes in the
467 DWARF-2 specification. The SGI/MIPS ABI defines it to be the same
469 #ifndef DWARF_OFFSET_SIZE
470 #define DWARF_OFFSET_SIZE 4
473 /* The size in bytes of a DWARF 4 type signature. */
474 #ifndef DWARF_TYPE_SIGNATURE_SIZE
475 #define DWARF_TYPE_SIGNATURE_SIZE 8
478 /* Default sizes for base C types. If the sizes are different for
479 your target, you should override these values by defining the
480 appropriate symbols in your tm.h file. */
482 #ifndef BITS_PER_UNIT
483 #define BITS_PER_UNIT 8
486 #ifndef BITS_PER_WORD
487 #define BITS_PER_WORD (BITS_PER_UNIT * UNITS_PER_WORD)
490 #ifndef CHAR_TYPE_SIZE
491 #define CHAR_TYPE_SIZE BITS_PER_UNIT
494 #ifndef BOOL_TYPE_SIZE
495 /* `bool' has size and alignment `1', on almost all platforms. */
496 #define BOOL_TYPE_SIZE CHAR_TYPE_SIZE
499 #ifndef SHORT_TYPE_SIZE
500 #define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2))
503 #ifndef INT_TYPE_SIZE
504 #define INT_TYPE_SIZE BITS_PER_WORD
507 #ifndef LONG_TYPE_SIZE
508 #define LONG_TYPE_SIZE BITS_PER_WORD
511 #ifndef LONG_LONG_TYPE_SIZE
512 #define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2)
515 #ifndef WCHAR_TYPE_SIZE
516 #define WCHAR_TYPE_SIZE INT_TYPE_SIZE
519 #ifndef FLOAT_TYPE_SIZE
520 #define FLOAT_TYPE_SIZE BITS_PER_WORD
523 #ifndef DOUBLE_TYPE_SIZE
524 #define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
527 #ifndef LONG_DOUBLE_TYPE_SIZE
528 #define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
531 #ifndef DECIMAL32_TYPE_SIZE
532 #define DECIMAL32_TYPE_SIZE 32
535 #ifndef DECIMAL64_TYPE_SIZE
536 #define DECIMAL64_TYPE_SIZE 64
539 #ifndef DECIMAL128_TYPE_SIZE
540 #define DECIMAL128_TYPE_SIZE 128
543 #ifndef SHORT_FRACT_TYPE_SIZE
544 #define SHORT_FRACT_TYPE_SIZE BITS_PER_UNIT
547 #ifndef FRACT_TYPE_SIZE
548 #define FRACT_TYPE_SIZE (BITS_PER_UNIT * 2)
551 #ifndef LONG_FRACT_TYPE_SIZE
552 #define LONG_FRACT_TYPE_SIZE (BITS_PER_UNIT * 4)
555 #ifndef LONG_LONG_FRACT_TYPE_SIZE
556 #define LONG_LONG_FRACT_TYPE_SIZE (BITS_PER_UNIT * 8)
559 #ifndef SHORT_ACCUM_TYPE_SIZE
560 #define SHORT_ACCUM_TYPE_SIZE (SHORT_FRACT_TYPE_SIZE * 2)
563 #ifndef ACCUM_TYPE_SIZE
564 #define ACCUM_TYPE_SIZE (FRACT_TYPE_SIZE * 2)
567 #ifndef LONG_ACCUM_TYPE_SIZE
568 #define LONG_ACCUM_TYPE_SIZE (LONG_FRACT_TYPE_SIZE * 2)
571 #ifndef LONG_LONG_ACCUM_TYPE_SIZE
572 #define LONG_LONG_ACCUM_TYPE_SIZE (LONG_LONG_FRACT_TYPE_SIZE * 2)
575 /* We let tm.h override the types used here, to handle trivial differences
576 such as the choice of unsigned int or long unsigned int for size_t.
577 When machines start needing nontrivial differences in the size type,
578 it would be best to do something here to figure out automatically
579 from other information what type to use. */
582 #define SIZE_TYPE "long unsigned int"
586 #define SIZETYPE SIZE_TYPE
590 #define PID_TYPE "int"
593 /* If GCC knows the exact uint_least16_t and uint_least32_t types from
594 <stdint.h>, use them for char16_t and char32_t. Otherwise, use
595 these guesses; getting the wrong type of a given width will not
596 affect C++ name mangling because in C++ these are distinct types
599 #ifdef UINT_LEAST16_TYPE
600 #define CHAR16_TYPE UINT_LEAST16_TYPE
602 #define CHAR16_TYPE "short unsigned int"
605 #ifdef UINT_LEAST32_TYPE
606 #define CHAR32_TYPE UINT_LEAST32_TYPE
608 #define CHAR32_TYPE "unsigned int"
612 #define WCHAR_TYPE "int"
615 /* WCHAR_TYPE gets overridden by -fshort-wchar. */
616 #define MODIFIED_WCHAR_TYPE \
617 (flag_short_wchar ? "short unsigned int" : WCHAR_TYPE)
620 #define PTRDIFF_TYPE "long int"
624 #define WINT_TYPE "unsigned int"
628 #define INTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
630 : ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
636 #define UINTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
638 : ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
639 ? "long unsigned int" \
640 : "long long unsigned int"))
644 /* There are no default definitions of these <stdint.h> types. */
646 #ifndef SIG_ATOMIC_TYPE
647 #define SIG_ATOMIC_TYPE ((const char *) NULL)
651 #define INT8_TYPE ((const char *) NULL)
655 #define INT16_TYPE ((const char *) NULL)
659 #define INT32_TYPE ((const char *) NULL)
663 #define INT64_TYPE ((const char *) NULL)
667 #define UINT8_TYPE ((const char *) NULL)
671 #define UINT16_TYPE ((const char *) NULL)
675 #define UINT32_TYPE ((const char *) NULL)
679 #define UINT64_TYPE ((const char *) NULL)
682 #ifndef INT_LEAST8_TYPE
683 #define INT_LEAST8_TYPE ((const char *) NULL)
686 #ifndef INT_LEAST16_TYPE
687 #define INT_LEAST16_TYPE ((const char *) NULL)
690 #ifndef INT_LEAST32_TYPE
691 #define INT_LEAST32_TYPE ((const char *) NULL)
694 #ifndef INT_LEAST64_TYPE
695 #define INT_LEAST64_TYPE ((const char *) NULL)
698 #ifndef UINT_LEAST8_TYPE
699 #define UINT_LEAST8_TYPE ((const char *) NULL)
702 #ifndef UINT_LEAST16_TYPE
703 #define UINT_LEAST16_TYPE ((const char *) NULL)
706 #ifndef UINT_LEAST32_TYPE
707 #define UINT_LEAST32_TYPE ((const char *) NULL)
710 #ifndef UINT_LEAST64_TYPE
711 #define UINT_LEAST64_TYPE ((const char *) NULL)
714 #ifndef INT_FAST8_TYPE
715 #define INT_FAST8_TYPE ((const char *) NULL)
718 #ifndef INT_FAST16_TYPE
719 #define INT_FAST16_TYPE ((const char *) NULL)
722 #ifndef INT_FAST32_TYPE
723 #define INT_FAST32_TYPE ((const char *) NULL)
726 #ifndef INT_FAST64_TYPE
727 #define INT_FAST64_TYPE ((const char *) NULL)
730 #ifndef UINT_FAST8_TYPE
731 #define UINT_FAST8_TYPE ((const char *) NULL)
734 #ifndef UINT_FAST16_TYPE
735 #define UINT_FAST16_TYPE ((const char *) NULL)
738 #ifndef UINT_FAST32_TYPE
739 #define UINT_FAST32_TYPE ((const char *) NULL)
742 #ifndef UINT_FAST64_TYPE
743 #define UINT_FAST64_TYPE ((const char *) NULL)
747 #define INTPTR_TYPE ((const char *) NULL)
751 #define UINTPTR_TYPE ((const char *) NULL)
754 /* Width in bits of a pointer. Mind the value of the macro `Pmode'. */
756 #define POINTER_SIZE BITS_PER_WORD
759 #ifndef PIC_OFFSET_TABLE_REGNUM
760 #define PIC_OFFSET_TABLE_REGNUM INVALID_REGNUM
763 #ifndef PIC_OFFSET_TABLE_REG_CALL_CLOBBERED
764 #define PIC_OFFSET_TABLE_REG_CALL_CLOBBERED 0
767 #ifndef TARGET_DLLIMPORT_DECL_ATTRIBUTES
768 #define TARGET_DLLIMPORT_DECL_ATTRIBUTES 0
771 #ifndef TARGET_DECLSPEC
772 #if TARGET_DLLIMPORT_DECL_ATTRIBUTES
773 /* If the target supports the "dllimport" attribute, users are
774 probably used to the "__declspec" syntax. */
775 #define TARGET_DECLSPEC 1
777 #define TARGET_DECLSPEC 0
781 /* By default, the preprocessor should be invoked the same way in C++
783 #ifndef CPLUSPLUS_CPP_SPEC
785 #define CPLUSPLUS_CPP_SPEC CPP_SPEC
789 #ifndef ACCUMULATE_OUTGOING_ARGS
790 #define ACCUMULATE_OUTGOING_ARGS 0
793 /* By default, use the GNU runtime for Objective C. */
794 #ifndef NEXT_OBJC_RUNTIME
795 #define NEXT_OBJC_RUNTIME 0
798 /* Supply a default definition for PUSH_ARGS. */
801 #define PUSH_ARGS !ACCUMULATE_OUTGOING_ARGS
807 /* Decide whether a function's arguments should be processed
808 from first to last or from last to first.
810 They should if the stack and args grow in opposite directions, but
811 only if we have push insns. */
815 #ifndef PUSH_ARGS_REVERSED
816 #if defined (STACK_GROWS_DOWNWARD) != defined (ARGS_GROW_DOWNWARD)
817 #define PUSH_ARGS_REVERSED PUSH_ARGS
823 #ifndef PUSH_ARGS_REVERSED
824 #define PUSH_ARGS_REVERSED 0
827 /* Default value for the alignment (in bits) a C conformant malloc has to
828 provide. This default is intended to be safe and always correct. */
829 #ifndef MALLOC_ABI_ALIGNMENT
830 #define MALLOC_ABI_ALIGNMENT BITS_PER_WORD
833 /* If PREFERRED_STACK_BOUNDARY is not defined, set it to STACK_BOUNDARY.
834 STACK_BOUNDARY is required. */
835 #ifndef PREFERRED_STACK_BOUNDARY
836 #define PREFERRED_STACK_BOUNDARY STACK_BOUNDARY
839 /* Set INCOMING_STACK_BOUNDARY to PREFERRED_STACK_BOUNDARY if it is not
841 #ifndef INCOMING_STACK_BOUNDARY
842 #define INCOMING_STACK_BOUNDARY PREFERRED_STACK_BOUNDARY
845 #ifndef TARGET_DEFAULT_PACK_STRUCT
846 #define TARGET_DEFAULT_PACK_STRUCT 0
849 /* By default, the vtable entries are void pointers, the so the alignment
850 is the same as pointer alignment. The value of this macro specifies
851 the alignment of the vtable entry in bits. It should be defined only
852 when special alignment is necessary. */
853 #ifndef TARGET_VTABLE_ENTRY_ALIGN
854 #define TARGET_VTABLE_ENTRY_ALIGN POINTER_SIZE
857 /* There are a few non-descriptor entries in the vtable at offsets below
858 zero. If these entries must be padded (say, to preserve the alignment
859 specified by TARGET_VTABLE_ENTRY_ALIGN), set this to the number of
860 words in each data entry. */
861 #ifndef TARGET_VTABLE_DATA_ENTRY_DISTANCE
862 #define TARGET_VTABLE_DATA_ENTRY_DISTANCE 1
865 /* Decide whether it is safe to use a local alias for a virtual function
866 when constructing thunks. */
867 #ifndef TARGET_USE_LOCAL_THUNK_ALIAS_P
868 #ifdef ASM_OUTPUT_DEF
869 #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 1
871 #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 0
875 /* Select a format to encode pointers in exception handling data. We
876 prefer those that result in fewer dynamic relocations. Assume no
877 special support here and encode direct references. */
878 #ifndef ASM_PREFERRED_EH_DATA_FORMAT
879 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) DW_EH_PE_absptr
882 /* By default, the C++ compiler will use the lowest bit of the pointer
883 to function to indicate a pointer-to-member-function points to a
884 virtual member function. However, if FUNCTION_BOUNDARY indicates
885 function addresses aren't always even, the lowest bit of the delta
886 field will be used. */
887 #ifndef TARGET_PTRMEMFUNC_VBIT_LOCATION
888 #define TARGET_PTRMEMFUNC_VBIT_LOCATION \
889 (FUNCTION_BOUNDARY >= 2 * BITS_PER_UNIT \
890 ? ptrmemfunc_vbit_in_pfn : ptrmemfunc_vbit_in_delta)
893 #ifndef DEFAULT_GDB_EXTENSIONS
894 #define DEFAULT_GDB_EXTENSIONS 1
897 /* If more than one debugging type is supported, you must define
898 PREFERRED_DEBUGGING_TYPE to choose the default. */
900 #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) \
901 + defined (DWARF2_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO) \
902 + defined (VMS_DEBUGGING_INFO))
903 #ifndef PREFERRED_DEBUGGING_TYPE
904 #error You must define PREFERRED_DEBUGGING_TYPE
905 #endif /* no PREFERRED_DEBUGGING_TYPE */
907 /* If only one debugging format is supported, define PREFERRED_DEBUGGING_TYPE
908 here so other code needn't care. */
909 #elif defined DBX_DEBUGGING_INFO
910 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
912 #elif defined SDB_DEBUGGING_INFO
913 #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG
915 #elif defined DWARF2_DEBUGGING_INFO
916 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
918 #elif defined VMS_DEBUGGING_INFO
919 #define PREFERRED_DEBUGGING_TYPE VMS_AND_DWARF2_DEBUG
921 #elif defined XCOFF_DEBUGGING_INFO
922 #define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG
925 /* No debugging format is supported by this target. */
926 #define PREFERRED_DEBUGGING_TYPE NO_DEBUG
929 #ifndef LARGEST_EXPONENT_IS_NORMAL
930 #define LARGEST_EXPONENT_IS_NORMAL(SIZE) 0
933 #ifndef ROUND_TOWARDS_ZERO
934 #define ROUND_TOWARDS_ZERO 0
937 #ifndef FLOAT_LIB_COMPARE_RETURNS_BOOL
938 #define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) false
941 /* True if the targets integer-comparison functions return { 0, 1, 2
942 } to indicate { <, ==, > }. False if { -1, 0, 1 } is used
943 instead. The libgcc routines are biased. */
944 #ifndef TARGET_LIB_INT_CMP_BIASED
945 #define TARGET_LIB_INT_CMP_BIASED (true)
948 /* If FLOAT_WORDS_BIG_ENDIAN is not defined in the header files,
949 then the word-endianness is the same as for integers. */
950 #ifndef FLOAT_WORDS_BIG_ENDIAN
951 #define FLOAT_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
954 #ifndef REG_WORDS_BIG_ENDIAN
955 #define REG_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
958 #ifdef TARGET_FLT_EVAL_METHOD
959 #define TARGET_FLT_EVAL_METHOD_NON_DEFAULT 1
961 #define TARGET_FLT_EVAL_METHOD 0
962 #define TARGET_FLT_EVAL_METHOD_NON_DEFAULT 0
965 #ifndef TARGET_DEC_EVAL_METHOD
966 #define TARGET_DEC_EVAL_METHOD 2
969 #ifndef HAS_LONG_COND_BRANCH
970 #define HAS_LONG_COND_BRANCH 0
973 #ifndef HAS_LONG_UNCOND_BRANCH
974 #define HAS_LONG_UNCOND_BRANCH 0
977 /* Determine whether __cxa_atexit, rather than atexit, is used to
978 register C++ destructors for local statics and global objects. */
979 #ifndef DEFAULT_USE_CXA_ATEXIT
980 #define DEFAULT_USE_CXA_ATEXIT 0
983 /* If none of these macros are defined, the port must use the new
984 technique of defining constraints in the machine description.
985 tm_p.h will define those macros that machine-independent code
987 #if !defined CONSTRAINT_LEN \
988 && !defined REG_CLASS_FROM_LETTER \
989 && !defined REG_CLASS_FROM_CONSTRAINT \
990 && !defined CONST_OK_FOR_LETTER_P \
991 && !defined CONST_OK_FOR_CONSTRAINT_P \
992 && !defined CONST_DOUBLE_OK_FOR_LETTER_P \
993 && !defined CONST_DOUBLE_OK_FOR_CONSTRAINT_P \
994 && !defined EXTRA_CONSTRAINT \
995 && !defined EXTRA_CONSTRAINT_STR \
996 && !defined EXTRA_MEMORY_CONSTRAINT \
997 && !defined EXTRA_ADDRESS_CONSTRAINT
999 #define USE_MD_CONSTRAINTS
1001 #if GCC_VERSION >= 3000 && defined IN_GCC
1002 /* These old constraint macros shouldn't appear anywhere in a
1003 configuration using MD constraint definitions. */
1004 #pragma GCC poison REG_CLASS_FROM_LETTER CONST_OK_FOR_LETTER_P \
1005 CONST_DOUBLE_OK_FOR_LETTER_P EXTRA_CONSTRAINT
1008 #else /* old constraint mechanism in use */
1010 /* Determine whether extra constraint letter should be handled
1011 via address reload (like 'o'). */
1012 #ifndef EXTRA_MEMORY_CONSTRAINT
1013 #define EXTRA_MEMORY_CONSTRAINT(C,STR) 0
1016 /* Determine whether extra constraint letter should be handled
1017 as an address (like 'p'). */
1018 #ifndef EXTRA_ADDRESS_CONSTRAINT
1019 #define EXTRA_ADDRESS_CONSTRAINT(C,STR) 0
1022 /* When a port defines CONSTRAINT_LEN, it should use DEFAULT_CONSTRAINT_LEN
1023 for all the characters that it does not want to change, so things like the
1024 'length' of a digit in a matching constraint is an implementation detail,
1025 and not part of the interface. */
1026 #define DEFAULT_CONSTRAINT_LEN(C,STR) 1
1028 #ifndef CONSTRAINT_LEN
1029 #define CONSTRAINT_LEN(C,STR) DEFAULT_CONSTRAINT_LEN (C, STR)
1032 #if defined (CONST_OK_FOR_LETTER_P) && ! defined (CONST_OK_FOR_CONSTRAINT_P)
1033 #define CONST_OK_FOR_CONSTRAINT_P(VAL,C,STR) CONST_OK_FOR_LETTER_P (VAL, C)
1036 #if defined (CONST_DOUBLE_OK_FOR_LETTER_P) && ! defined (CONST_DOUBLE_OK_FOR_CONSTRAINT_P)
1037 #define CONST_DOUBLE_OK_FOR_CONSTRAINT_P(OP,C,STR) \
1038 CONST_DOUBLE_OK_FOR_LETTER_P (OP, C)
1041 #ifndef REG_CLASS_FROM_CONSTRAINT
1042 #define REG_CLASS_FROM_CONSTRAINT(C,STR) REG_CLASS_FROM_LETTER (C)
1045 #if defined (EXTRA_CONSTRAINT) && ! defined (EXTRA_CONSTRAINT_STR)
1046 #define EXTRA_CONSTRAINT_STR(OP, C,STR) EXTRA_CONSTRAINT (OP, C)
1049 #endif /* old constraint mechanism in use */
1051 /* Determine whether the entire c99 runtime
1052 is present in the runtime library. */
1053 #ifndef TARGET_C99_FUNCTIONS
1054 #define TARGET_C99_FUNCTIONS 0
1057 /* Determine whether the target runtime library has
1058 a sincos implementation following the GNU extension. */
1059 #ifndef TARGET_HAS_SINCOS
1060 #define TARGET_HAS_SINCOS 0
1063 /* Indicate that CLZ and CTZ are undefined at zero. */
1064 #ifndef CLZ_DEFINED_VALUE_AT_ZERO
1065 #define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0
1067 #ifndef CTZ_DEFINED_VALUE_AT_ZERO
1068 #define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0
1071 /* Provide a default value for STORE_FLAG_VALUE. */
1072 #ifndef STORE_FLAG_VALUE
1073 #define STORE_FLAG_VALUE 1
1076 /* This macro is used to determine what the largest unit size that
1077 move_by_pieces can use is. */
1079 /* MOVE_MAX_PIECES is the number of bytes at a time which we can
1080 move efficiently, as opposed to MOVE_MAX which is the maximum
1081 number of bytes we can move with a single instruction. */
1083 #ifndef MOVE_MAX_PIECES
1084 #define MOVE_MAX_PIECES MOVE_MAX
1087 #ifndef MAX_MOVE_MAX
1088 #define MAX_MOVE_MAX MOVE_MAX
1091 #ifndef MIN_UNITS_PER_WORD
1092 #define MIN_UNITS_PER_WORD UNITS_PER_WORD
1095 #ifndef MAX_BITS_PER_WORD
1096 #define MAX_BITS_PER_WORD BITS_PER_WORD
1099 #ifndef STACK_POINTER_OFFSET
1100 #define STACK_POINTER_OFFSET 0
1104 #define LOCAL_REGNO(REGNO) 0
1107 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
1108 the stack pointer does not matter. The value is tested only in
1109 functions that have frame pointers. */
1110 #ifndef EXIT_IGNORE_STACK
1111 #define EXIT_IGNORE_STACK 0
1114 /* Assume that case vectors are not pc-relative. */
1115 #ifndef CASE_VECTOR_PC_RELATIVE
1116 #define CASE_VECTOR_PC_RELATIVE 0
1119 /* Assume that trampolines need function alignment. */
1120 #ifndef TRAMPOLINE_ALIGNMENT
1121 #define TRAMPOLINE_ALIGNMENT FUNCTION_BOUNDARY
1124 /* Register mappings for target machines without register windows. */
1125 #ifndef INCOMING_REGNO
1126 #define INCOMING_REGNO(N) (N)
1129 #ifndef OUTGOING_REGNO
1130 #define OUTGOING_REGNO(N) (N)
1133 #ifndef SHIFT_COUNT_TRUNCATED
1134 #define SHIFT_COUNT_TRUNCATED 0
1137 #ifndef LEGITIMATE_PIC_OPERAND_P
1138 #define LEGITIMATE_PIC_OPERAND_P(X) 1
1141 #ifndef TARGET_MEM_CONSTRAINT
1142 #define TARGET_MEM_CONSTRAINT 'm'
1145 #ifndef REVERSIBLE_CC_MODE
1146 #define REVERSIBLE_CC_MODE(MODE) 0
1149 /* Biggest alignment supported by the object file format of this machine. */
1150 #ifndef MAX_OFILE_ALIGNMENT
1151 #define MAX_OFILE_ALIGNMENT BIGGEST_ALIGNMENT
1154 #ifndef FRAME_GROWS_DOWNWARD
1155 #define FRAME_GROWS_DOWNWARD 0
1158 /* On most machines, the CFA coincides with the first incoming parm. */
1159 #ifndef ARG_POINTER_CFA_OFFSET
1160 #define ARG_POINTER_CFA_OFFSET(FNDECL) \
1161 (FIRST_PARM_OFFSET (FNDECL) + crtl->args.pretend_args_size)
1164 /* On most machines, we use the CFA as DW_AT_frame_base. */
1165 #ifndef CFA_FRAME_BASE_OFFSET
1166 #define CFA_FRAME_BASE_OFFSET(FNDECL) 0
1169 /* The offset from the incoming value of %sp to the top of the stack frame
1170 for the current function. */
1171 #ifndef INCOMING_FRAME_SP_OFFSET
1172 #define INCOMING_FRAME_SP_OFFSET 0
1175 #ifndef HARD_REGNO_NREGS_HAS_PADDING
1176 #define HARD_REGNO_NREGS_HAS_PADDING(REGNO, MODE) 0
1177 #define HARD_REGNO_NREGS_WITH_PADDING(REGNO, MODE) -1
1180 #ifndef OUTGOING_REG_PARM_STACK_SPACE
1181 #define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) 0
1184 /* MAX_STACK_ALIGNMENT is the maximum stack alignment guaranteed by
1185 the backend. MAX_SUPPORTED_STACK_ALIGNMENT is the maximum best
1186 effort stack alignment supported by the backend. If the backend
1187 supports stack alignment, MAX_SUPPORTED_STACK_ALIGNMENT and
1188 MAX_STACK_ALIGNMENT are the same. Otherwise, the incoming stack
1189 boundary will limit the maximum guaranteed stack alignment. */
1190 #ifdef MAX_STACK_ALIGNMENT
1191 #define MAX_SUPPORTED_STACK_ALIGNMENT MAX_STACK_ALIGNMENT
1193 #define MAX_STACK_ALIGNMENT STACK_BOUNDARY
1194 #define MAX_SUPPORTED_STACK_ALIGNMENT PREFERRED_STACK_BOUNDARY
1197 #define SUPPORTS_STACK_ALIGNMENT (MAX_STACK_ALIGNMENT > STACK_BOUNDARY)
1199 #ifndef LOCAL_ALIGNMENT
1200 #define LOCAL_ALIGNMENT(TYPE, ALIGNMENT) ALIGNMENT
1203 #ifndef STACK_SLOT_ALIGNMENT
1204 #define STACK_SLOT_ALIGNMENT(TYPE,MODE,ALIGN) \
1205 ((TYPE) ? LOCAL_ALIGNMENT ((TYPE), (ALIGN)) : (ALIGN))
1208 #ifndef LOCAL_DECL_ALIGNMENT
1209 #define LOCAL_DECL_ALIGNMENT(DECL) \
1210 LOCAL_ALIGNMENT (TREE_TYPE (DECL), DECL_ALIGN (DECL))
1213 #ifndef MINIMUM_ALIGNMENT
1214 #define MINIMUM_ALIGNMENT(EXP,MODE,ALIGN) (ALIGN)
1217 /* Alignment value for attribute ((aligned)). */
1218 #ifndef ATTRIBUTE_ALIGNED_VALUE
1219 #define ATTRIBUTE_ALIGNED_VALUE BIGGEST_ALIGNMENT
1222 /* Many ports have no mode-dependent addresses (except possibly autoincrement
1223 and autodecrement addresses, which are handled by target-independent code
1225 #ifndef GO_IF_MODE_DEPENDENT_ADDRESS
1226 #define GO_IF_MODE_DEPENDENT_ADDRESS(X, WIN)
1229 /* For most ports anything that evaluates to a constant symbolic
1230 or integer value is acceptable as a constant address. */
1231 #ifndef CONSTANT_ADDRESS_P
1232 #define CONSTANT_ADDRESS_P(X) (CONSTANT_P (X) && GET_CODE (X) != CONST_DOUBLE)
1235 #ifndef MAX_FIXED_MODE_SIZE
1236 #define MAX_FIXED_MODE_SIZE GET_MODE_BITSIZE (DImode)
1239 /* Nonzero if structures and unions should be returned in memory.
1241 This should only be defined if compatibility with another compiler or
1242 with an ABI is needed, because it results in slower code. */
1244 #ifndef DEFAULT_PCC_STRUCT_RETURN
1245 #define DEFAULT_PCC_STRUCT_RETURN 1
1248 #ifdef GCC_INSN_FLAGS_H
1249 /* Dependent default target macro definitions
1251 This section of defaults.h defines target macros that depend on generated
1252 headers. This is a bit awkward: We want to put all default definitions
1253 for target macros in defaults.h, but some of the defaults depend on the
1254 HAVE_* flags defines of insn-flags.h. But insn-flags.h is not always
1255 included by files that do include defaults.h.
1257 Fortunately, the default macro definitions that depend on the HAVE_*
1258 macros are also the ones that will only be used inside GCC itself, i.e.
1259 not in the gen* programs or in target objects like libgcc.
1261 Obviously, it would be best to keep this section of defaults.h as small
1262 as possible, by converting the macros defined below to target hooks or
1266 /* The default branch cost is 1. */
1268 #define BRANCH_COST(speed_p, predictable_p) 1
1271 /* If a memory-to-memory move would take MOVE_RATIO or more simple
1272 move-instruction sequences, we will do a movmem or libcall instead. */
1275 #if defined (HAVE_movmemqi) || defined (HAVE_movmemhi) || defined (HAVE_movmemsi) || defined (HAVE_movmemdi) || defined (HAVE_movmemti)
1276 #define MOVE_RATIO(speed) 2
1278 /* If we are optimizing for space (-Os), cut down the default move ratio. */
1279 #define MOVE_RATIO(speed) ((speed) ? 15 : 3)
1283 /* If a clear memory operation would take CLEAR_RATIO or more simple
1284 move-instruction sequences, we will do a setmem or libcall instead. */
1287 #if defined (HAVE_setmemqi) || defined (HAVE_setmemhi) || defined (HAVE_setmemsi) || defined (HAVE_setmemdi) || defined (HAVE_setmemti)
1288 #define CLEAR_RATIO(speed) 2
1290 /* If we are optimizing for space, cut down the default clear ratio. */
1291 #define CLEAR_RATIO(speed) ((speed) ? 15 :3)
1295 /* If a memory set (to value other than zero) operation would take
1296 SET_RATIO or more simple move-instruction sequences, we will do a movmem
1297 or libcall instead. */
1299 #define SET_RATIO(speed) MOVE_RATIO(speed)
1302 /* Supply a default definition for FUNCTION_ARG_PADDING:
1303 usually pad upward, but pad short args downward on
1304 big-endian machines. */
1306 #define DEFAULT_FUNCTION_ARG_PADDING(MODE, TYPE) \
1307 (! BYTES_BIG_ENDIAN \
1309 : (((MODE) == BLKmode \
1310 ? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \
1311 && int_size_in_bytes (TYPE) < (PARM_BOUNDARY / BITS_PER_UNIT)) \
1312 : GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY) \
1313 ? downward : upward))
1315 #ifndef FUNCTION_ARG_PADDING
1316 #define FUNCTION_ARG_PADDING(MODE, TYPE) \
1317 DEFAULT_FUNCTION_ARG_PADDING ((MODE), (TYPE))
1320 /* Supply a default definition of STACK_SAVEAREA_MODE for emit_stack_save.
1321 Normally move_insn, so Pmode stack pointer. */
1323 #ifndef STACK_SAVEAREA_MODE
1324 #define STACK_SAVEAREA_MODE(LEVEL) Pmode
1327 /* Supply a default definition of STACK_SIZE_MODE for
1328 allocate_dynamic_stack_space. Normally PLUS/MINUS, so word_mode. */
1330 #ifndef STACK_SIZE_MODE
1331 #define STACK_SIZE_MODE word_mode
1334 /* Provide default values for the macros controlling stack checking. */
1336 /* The default is neither full builtin stack checking... */
1337 #ifndef STACK_CHECK_BUILTIN
1338 #define STACK_CHECK_BUILTIN 0
1341 /* ...nor static builtin stack checking. */
1342 #ifndef STACK_CHECK_STATIC_BUILTIN
1343 #define STACK_CHECK_STATIC_BUILTIN 0
1346 /* The default interval is one page (4096 bytes). */
1347 #ifndef STACK_CHECK_PROBE_INTERVAL_EXP
1348 #define STACK_CHECK_PROBE_INTERVAL_EXP 12
1351 /* The default is not to move the stack pointer. */
1352 #ifndef STACK_CHECK_MOVING_SP
1353 #define STACK_CHECK_MOVING_SP 0
1356 /* This is a kludge to try to capture the discrepancy between the old
1357 mechanism (generic stack checking) and the new mechanism (static
1358 builtin stack checking). STACK_CHECK_PROTECT needs to be bumped
1359 for the latter because part of the protection area is effectively
1360 included in STACK_CHECK_MAX_FRAME_SIZE for the former. */
1361 #ifdef STACK_CHECK_PROTECT
1362 #define STACK_OLD_CHECK_PROTECT STACK_CHECK_PROTECT
1364 #define STACK_OLD_CHECK_PROTECT \
1365 (targetm_common.except_unwind_info (&global_options) == UI_SJLJ \
1366 ? 75 * UNITS_PER_WORD \
1370 /* Minimum amount of stack required to recover from an anticipated stack
1371 overflow detection. The default value conveys an estimate of the amount
1372 of stack required to propagate an exception. */
1373 #ifndef STACK_CHECK_PROTECT
1374 #define STACK_CHECK_PROTECT \
1375 (targetm_common.except_unwind_info (&global_options) == UI_SJLJ \
1376 ? 75 * UNITS_PER_WORD \
1380 /* Make the maximum frame size be the largest we can and still only need
1381 one probe per function. */
1382 #ifndef STACK_CHECK_MAX_FRAME_SIZE
1383 #define STACK_CHECK_MAX_FRAME_SIZE \
1384 ((1 << STACK_CHECK_PROBE_INTERVAL_EXP) - UNITS_PER_WORD)
1387 /* This is arbitrary, but should be large enough everywhere. */
1388 #ifndef STACK_CHECK_FIXED_FRAME_SIZE
1389 #define STACK_CHECK_FIXED_FRAME_SIZE (4 * UNITS_PER_WORD)
1392 /* Provide a reasonable default for the maximum size of an object to
1393 allocate in the fixed frame. We may need to be able to make this
1394 controllable by the user at some point. */
1395 #ifndef STACK_CHECK_MAX_VAR_SIZE
1396 #define STACK_CHECK_MAX_VAR_SIZE (STACK_CHECK_MAX_FRAME_SIZE / 100)
1399 /* By default, the C++ compiler will use function addresses in the
1400 vtable entries. Setting this nonzero tells the compiler to use
1401 function descriptors instead. The value of this macro says how
1402 many words wide the descriptor is (normally 2). It is assumed
1403 that the address of a function descriptor may be treated as a
1404 pointer to a function. */
1405 #ifndef TARGET_VTABLE_USES_DESCRIPTORS
1406 #define TARGET_VTABLE_USES_DESCRIPTORS 0
1409 #ifndef SWITCHABLE_TARGET
1410 #define SWITCHABLE_TARGET 0
1413 #endif /* GCC_INSN_FLAGS_H */
1415 /* UPC section names and begin/end labels */
1417 /* Name of section used to assign addresses to shared data items */
1418 #ifndef UPC_SHARED_SECTION_NAME
1419 #define UPC_SHARED_SECTION_NAME "upc_shared"
1422 /* Used by upc-crtbegin to define the beginning of the shared section */
1423 #ifndef UPC_SHARED_BEGIN_NAME
1424 #define UPC_SHARED_BEGIN_NAME __upc_shared_start
1427 /* Used by upc-crtend to define the end of the shared section */
1428 #ifndef UPC_SHARED_END_NAME
1429 #define UPC_SHARED_END_NAME __upc_shared_end
1432 /* Name of section used to hold info. describing how a UPC source file was compiled. */
1433 #ifndef UPC_PGM_INFO_SECTION_NAME
1434 #define UPC_PGM_INFO_SECTION_NAME "upc_pgm_info"
1437 /* Used by upc-crtbegin to define the beginning of the shared section */
1438 #ifndef UPC_PGM_INFO_BEGIN_NAME
1439 #define UPC_PGM_INFO_BEGIN_NAME __upc_pgm_info_start
1442 /* Used by upc-crtend to define the end of the shared section */
1443 #ifndef UPC_PGM_INFO_END_NAME
1444 #define UPC_PGM_INFO_END_NAME __upc_pgm_info_end
1447 /* Name of section where UPC iniitialization routines are located. */
1448 #ifndef UPC_INIT_SECTION_NAME
1449 #define UPC_INIT_SECTION_NAME "upc_init"
1452 /* Used by upc-crtbegin to define the beginning of init. routines section */
1453 #ifndef UPC_INIT_BEGIN_NAME
1454 #define UPC_INIT_BEGIN_NAME __upc_init_start
1457 /* Used by upc-crtend to define the beginning of init. routines section */
1458 #ifndef UPC_INIT_END_NAME
1459 #define UPC_INIT_END_NAME __upc_init_end
1462 /* Name of section that holds an array of addresses that points to
1463 the UPC initialization routiones */
1464 #ifndef UPC_INIT_ARRAY_SECTION_NAME
1465 #define UPC_INIT_ARRAY_SECTION_NAME "upc_init_array"
1468 /* Used by upc-crtbegin to define the beginning of UPC init. array ection. */
1469 #ifndef UPC_INIT_ARRAY_BEGIN_NAME
1470 #define UPC_INIT_ARRAY_BEGIN_NAME __upc_init_array_start
1473 /* Used by upc-crtend to define the beginning of UPC init. array section. */
1474 #ifndef UPC_INIT_ARRAY_END_NAME
1475 #define UPC_INIT_ARRAY_END_NAME __upc_init_array_end
1478 #endif /* ! GCC_DEFAULTS_H */