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
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 #ifndef GET_ENVIRONMENT
32 #define GET_ENVIRONMENT(VALUE, NAME) do { (VALUE) = getenv (NAME); } while (0)
35 /* Store in OUTPUT a string (made with alloca) containing an
36 assembler-name for a local static variable or function named NAME.
37 LABELNO is an integer which is different for each call. */
40 # ifndef NO_DOT_IN_LABEL
41 # define ASM_PN_FORMAT "%s.%lu"
43 # ifndef NO_DOLLAR_IN_LABEL
44 # define ASM_PN_FORMAT "%s$%lu"
46 # define ASM_PN_FORMAT "__%s_%lu"
49 #endif /* ! ASM_PN_FORMAT */
51 #ifndef ASM_FORMAT_PRIVATE_NAME
52 # define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
53 do { const char *const name_ = (NAME); \
54 char *const output_ = (OUTPUT) = \
55 (char *) alloca (strlen (name_) + 32); \
56 sprintf (output_, ASM_PN_FORMAT, name_, (unsigned long)(LABELNO)); \
60 /* Choose a reasonable default for ASM_OUTPUT_ASCII. */
62 #ifndef ASM_OUTPUT_ASCII
63 #define ASM_OUTPUT_ASCII(MYFILE, MYSTRING, MYLENGTH) \
65 FILE *_hide_asm_out_file = (MYFILE); \
66 const unsigned char *_hide_p = (const unsigned char *) (MYSTRING); \
67 int _hide_thissize = (MYLENGTH); \
69 FILE *asm_out_file = _hide_asm_out_file; \
70 const unsigned char *p = _hide_p; \
71 int thissize = _hide_thissize; \
73 fprintf (asm_out_file, "\t.ascii \""); \
75 for (i = 0; i < thissize; i++) \
78 if (c == '\"' || c == '\\') \
79 putc ('\\', asm_out_file); \
81 putc (c, asm_out_file); \
84 fprintf (asm_out_file, "\\%o", c); \
85 /* After an octal-escape, if a digit follows, \
86 terminate one string constant and start another. \
87 The VAX assembler fails to stop reading the escape \
88 after three digits, so this is the only way we \
89 can get it to parse the data properly. */ \
90 if (i < thissize - 1 && ISDIGIT(p[i + 1])) \
91 fprintf (asm_out_file, "\"\n\t.ascii \""); \
94 fprintf (asm_out_file, "\"\n"); \
100 /* This is how we tell the assembler to equate two values. */
102 #ifndef ASM_OUTPUT_DEF
103 #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \
104 do { fprintf ((FILE), "%s", SET_ASM_OP); \
105 assemble_name (FILE, LABEL1); \
106 fprintf (FILE, ","); \
107 assemble_name (FILE, LABEL2); \
108 fprintf (FILE, "\n"); \
113 #ifndef IFUNC_ASM_TYPE
114 #define IFUNC_ASM_TYPE "gnu_indirect_function"
117 #ifndef TLS_COMMON_ASM_OP
118 #define TLS_COMMON_ASM_OP ".tls_common"
121 #if defined (HAVE_AS_TLS) && !defined (ASM_OUTPUT_TLS_COMMON)
122 #define ASM_OUTPUT_TLS_COMMON(FILE, DECL, NAME, SIZE) \
125 fprintf ((FILE), "\t%s\t", TLS_COMMON_ASM_OP); \
126 assemble_name ((FILE), (NAME)); \
127 fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", \
128 (SIZE), DECL_ALIGN (DECL) / BITS_PER_UNIT); \
133 /* Decide whether to defer emitting the assembler output for an equate
134 of two values. The default is to not defer output. */
135 #ifndef TARGET_DEFERRED_OUTPUT_DEFS
136 #define TARGET_DEFERRED_OUTPUT_DEFS(DECL,TARGET) false
139 /* This is how to output the definition of a user-level label named
140 NAME, such as the label on variable NAME. */
142 #ifndef ASM_OUTPUT_LABEL
143 #define ASM_OUTPUT_LABEL(FILE,NAME) \
144 do { assemble_name ((FILE), (NAME)); fputs (":\n", (FILE)); } while (0)
147 /* This is how to output the definition of a user-level label named
148 NAME, such as the label on a function. */
150 #ifndef ASM_OUTPUT_FUNCTION_LABEL
151 #define ASM_OUTPUT_FUNCTION_LABEL(FILE, NAME, DECL) \
152 ASM_OUTPUT_LABEL ((FILE), (NAME))
155 /* Output the definition of a compiler-generated label named NAME. */
156 #ifndef ASM_OUTPUT_INTERNAL_LABEL
157 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,NAME) \
159 assemble_name_raw ((FILE), (NAME)); \
160 fputs (":\n", (FILE)); \
164 /* This is how to output a reference to a user-level label named NAME. */
166 #ifndef ASM_OUTPUT_LABELREF
167 #define ASM_OUTPUT_LABELREF(FILE,NAME) asm_fprintf ((FILE), "%U%s", (NAME))
170 /* Allow target to print debug info labels specially. This is useful for
171 VLIW targets, since debug info labels should go into the middle of
172 instruction bundles instead of breaking them. */
174 #ifndef ASM_OUTPUT_DEBUG_LABEL
175 #define ASM_OUTPUT_DEBUG_LABEL(FILE, PREFIX, NUM) \
176 (*targetm.asm_out.internal_label) (FILE, PREFIX, NUM)
179 /* This is how we tell the assembler that a symbol is weak. */
180 #ifndef ASM_OUTPUT_WEAK_ALIAS
181 #if defined (ASM_WEAKEN_LABEL) && defined (ASM_OUTPUT_DEF)
182 #define ASM_OUTPUT_WEAK_ALIAS(STREAM, NAME, VALUE) \
185 ASM_WEAKEN_LABEL (STREAM, NAME); \
187 ASM_OUTPUT_DEF (STREAM, NAME, VALUE); \
193 /* This is how we tell the assembler that a symbol is a weak alias to
194 another symbol that doesn't require the other symbol to be defined.
195 Uses of the former will turn into weak uses of the latter, i.e.,
196 uses that, in case the latter is undefined, will not cause errors,
197 and will add it to the symbol table as weak undefined. However, if
198 the latter is referenced directly, a strong reference prevails. */
199 #ifndef ASM_OUTPUT_WEAKREF
200 #if defined HAVE_GAS_WEAKREF
201 #define ASM_OUTPUT_WEAKREF(FILE, DECL, NAME, VALUE) \
204 fprintf ((FILE), "\t.weakref\t"); \
205 assemble_name ((FILE), (NAME)); \
206 fprintf ((FILE), ","); \
207 assemble_name ((FILE), (VALUE)); \
208 fprintf ((FILE), "\n"); \
214 /* How to emit a .type directive. */
215 #ifndef ASM_OUTPUT_TYPE_DIRECTIVE
216 #if defined TYPE_ASM_OP && defined TYPE_OPERAND_FMT
217 #define ASM_OUTPUT_TYPE_DIRECTIVE(STREAM, NAME, TYPE) \
220 fputs (TYPE_ASM_OP, STREAM); \
221 assemble_name (STREAM, NAME); \
222 fputs (", ", STREAM); \
223 fprintf (STREAM, TYPE_OPERAND_FMT, TYPE); \
224 putc ('\n', STREAM); \
230 /* How to emit a .size directive. */
231 #ifndef ASM_OUTPUT_SIZE_DIRECTIVE
233 #define ASM_OUTPUT_SIZE_DIRECTIVE(STREAM, NAME, SIZE) \
236 HOST_WIDE_INT size_ = (SIZE); \
237 fputs (SIZE_ASM_OP, STREAM); \
238 assemble_name (STREAM, NAME); \
239 fprintf (STREAM, ", " HOST_WIDE_INT_PRINT_DEC "\n", size_); \
243 #define ASM_OUTPUT_MEASURED_SIZE(STREAM, NAME) \
246 fputs (SIZE_ASM_OP, STREAM); \
247 assemble_name (STREAM, NAME); \
248 fputs (", .-", STREAM); \
249 assemble_name (STREAM, NAME); \
250 putc ('\n', STREAM); \
257 /* This determines whether or not we support weak symbols. SUPPORTS_WEAK
258 must be a preprocessor constant. */
259 #ifndef SUPPORTS_WEAK
260 #if defined (ASM_WEAKEN_LABEL) || defined (ASM_WEAKEN_DECL)
261 #define SUPPORTS_WEAK 1
263 #define SUPPORTS_WEAK 0
267 /* This determines whether or not we support weak symbols during target
268 code generation. TARGET_SUPPORTS_WEAK can be any valid C expression. */
269 #ifndef TARGET_SUPPORTS_WEAK
270 #define TARGET_SUPPORTS_WEAK (SUPPORTS_WEAK)
273 /* This determines whether or not we support the discriminator
274 attribute in the .loc directive. */
275 #ifndef SUPPORTS_DISCRIMINATOR
276 #ifdef HAVE_GAS_DISCRIMINATOR
277 #define SUPPORTS_DISCRIMINATOR 1
279 #define SUPPORTS_DISCRIMINATOR 0
283 /* This determines whether or not we support link-once semantics. */
284 #ifndef SUPPORTS_ONE_ONLY
285 #ifdef MAKE_DECL_ONE_ONLY
286 #define SUPPORTS_ONE_ONLY 1
288 #define SUPPORTS_ONE_ONLY 0
292 /* This determines whether weak symbols must be left out of a static
293 archive's table of contents. Defining this macro to be nonzero has
294 the consequence that certain symbols will not be made weak that
295 otherwise would be. The C++ ABI requires this macro to be zero;
296 see the documentation. */
297 #ifndef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
298 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 0
301 /* This determines whether or not we need linkonce unwind information. */
302 #ifndef TARGET_USES_WEAK_UNWIND_INFO
303 #define TARGET_USES_WEAK_UNWIND_INFO 0
306 /* By default, there is no prefix on user-defined symbols. */
307 #ifndef USER_LABEL_PREFIX
308 #define USER_LABEL_PREFIX ""
311 /* If the target supports weak symbols, define TARGET_ATTRIBUTE_WEAK to
312 provide a weak attribute. Else define it to nothing.
314 This would normally belong in ansidecl.h, but SUPPORTS_WEAK is
315 not available at that time.
317 Note, this is only for use by target files which we know are to be
319 #ifndef TARGET_ATTRIBUTE_WEAK
321 # define TARGET_ATTRIBUTE_WEAK __attribute__ ((weak))
323 # define TARGET_ATTRIBUTE_WEAK
327 /* Determines whether we may use common symbols to represent one-only
328 semantics (a.k.a. "vague linkage"). */
329 #ifndef USE_COMMON_FOR_ONE_ONLY
330 # define USE_COMMON_FOR_ONE_ONLY 1
333 /* By default we can assume that all global symbols are in one namespace,
334 across all shared libraries. */
335 #ifndef MULTIPLE_SYMBOL_SPACES
336 # define MULTIPLE_SYMBOL_SPACES 0
339 /* If the target supports init_priority C++ attribute, give
340 SUPPORTS_INIT_PRIORITY a nonzero value. */
341 #ifndef SUPPORTS_INIT_PRIORITY
342 #define SUPPORTS_INIT_PRIORITY 1
343 #endif /* SUPPORTS_INIT_PRIORITY */
345 /* If duplicate library search directories can be removed from a
346 linker command without changing the linker's semantics, give this
348 #ifndef LINK_ELIMINATE_DUPLICATE_LDIRECTORIES
349 #define LINK_ELIMINATE_DUPLICATE_LDIRECTORIES 0
350 #endif /* LINK_ELIMINATE_DUPLICATE_LDIRECTORIES */
352 /* If we have a definition of INCOMING_RETURN_ADDR_RTX, assume that
353 the rest of the DWARF 2 frame unwind support is also provided. */
354 #if !defined (DWARF2_UNWIND_INFO) && defined (INCOMING_RETURN_ADDR_RTX)
355 #define DWARF2_UNWIND_INFO 1
358 /* If we have named sections, and we're using crtstuff to run ctors,
359 use them for registering eh frame information. */
360 #if defined (TARGET_ASM_NAMED_SECTION) && DWARF2_UNWIND_INFO \
361 && !defined(EH_FRAME_IN_DATA_SECTION)
362 #ifndef EH_FRAME_SECTION_NAME
363 #define EH_FRAME_SECTION_NAME ".eh_frame"
367 /* On many systems, different EH table encodings are used under
368 difference circumstances. Some will require runtime relocations;
369 some will not. For those that do not require runtime relocations,
370 we would like to make the table read-only. However, since the
371 read-only tables may need to be combined with read-write tables
372 that do require runtime relocation, it is not safe to make the
373 tables read-only unless the linker will merge read-only and
374 read-write sections into a single read-write section. If your
375 linker does not have this ability, but your system is such that no
376 encoding used with non-PIC code will ever require a runtime
377 relocation, then you can define EH_TABLES_CAN_BE_READ_ONLY to 1 in
378 your target configuration file. */
379 #ifndef EH_TABLES_CAN_BE_READ_ONLY
380 #ifdef HAVE_LD_RO_RW_SECTION_MIXING
381 #define EH_TABLES_CAN_BE_READ_ONLY 1
383 #define EH_TABLES_CAN_BE_READ_ONLY 0
387 /* If we have named section and we support weak symbols, then use the
388 .jcr section for recording java classes which need to be registered
389 at program start-up time. */
390 #if defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK
391 #ifndef JCR_SECTION_NAME
392 #define JCR_SECTION_NAME ".jcr"
396 /* This decision to use a .jcr section can be overridden by defining
397 USE_JCR_SECTION to 0 in target file. This is necessary if target
398 can define JCR_SECTION_NAME but does not have crtstuff or
399 linker support for .jcr section. */
400 #ifndef TARGET_USE_JCR_SECTION
401 #ifdef JCR_SECTION_NAME
402 #define TARGET_USE_JCR_SECTION 1
404 #define TARGET_USE_JCR_SECTION 0
408 /* Number of hardware registers that go into the DWARF-2 unwind info.
409 If not defined, equals FIRST_PSEUDO_REGISTER */
411 #ifndef DWARF_FRAME_REGISTERS
412 #define DWARF_FRAME_REGISTERS FIRST_PSEUDO_REGISTER
415 /* How to renumber registers for dbx and gdb. If not defined, assume
416 no renumbering is necessary. */
418 #ifndef DBX_REGISTER_NUMBER
419 #define DBX_REGISTER_NUMBER(REGNO) (REGNO)
422 /* Default sizes for base C types. If the sizes are different for
423 your target, you should override these values by defining the
424 appropriate symbols in your tm.h file. */
426 #ifndef BITS_PER_UNIT
427 #define BITS_PER_UNIT 8
430 #ifndef BITS_PER_WORD
431 #define BITS_PER_WORD (BITS_PER_UNIT * UNITS_PER_WORD)
434 #ifndef CHAR_TYPE_SIZE
435 #define CHAR_TYPE_SIZE BITS_PER_UNIT
438 #ifndef BOOL_TYPE_SIZE
439 /* `bool' has size and alignment `1', on almost all platforms. */
440 #define BOOL_TYPE_SIZE CHAR_TYPE_SIZE
443 #ifndef SHORT_TYPE_SIZE
444 #define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2))
447 #ifndef INT_TYPE_SIZE
448 #define INT_TYPE_SIZE BITS_PER_WORD
451 #ifndef LONG_TYPE_SIZE
452 #define LONG_TYPE_SIZE BITS_PER_WORD
455 #ifndef LONG_LONG_TYPE_SIZE
456 #define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2)
459 #ifndef WCHAR_TYPE_SIZE
460 #define WCHAR_TYPE_SIZE INT_TYPE_SIZE
463 #ifndef FLOAT_TYPE_SIZE
464 #define FLOAT_TYPE_SIZE BITS_PER_WORD
467 #ifndef DOUBLE_TYPE_SIZE
468 #define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
471 #ifndef LONG_DOUBLE_TYPE_SIZE
472 #define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
475 #ifndef DECIMAL32_TYPE_SIZE
476 #define DECIMAL32_TYPE_SIZE 32
479 #ifndef DECIMAL64_TYPE_SIZE
480 #define DECIMAL64_TYPE_SIZE 64
483 #ifndef DECIMAL128_TYPE_SIZE
484 #define DECIMAL128_TYPE_SIZE 128
487 #ifndef SHORT_FRACT_TYPE_SIZE
488 #define SHORT_FRACT_TYPE_SIZE BITS_PER_UNIT
491 #ifndef FRACT_TYPE_SIZE
492 #define FRACT_TYPE_SIZE (BITS_PER_UNIT * 2)
495 #ifndef LONG_FRACT_TYPE_SIZE
496 #define LONG_FRACT_TYPE_SIZE (BITS_PER_UNIT * 4)
499 #ifndef LONG_LONG_FRACT_TYPE_SIZE
500 #define LONG_LONG_FRACT_TYPE_SIZE (BITS_PER_UNIT * 8)
503 #ifndef SHORT_ACCUM_TYPE_SIZE
504 #define SHORT_ACCUM_TYPE_SIZE (SHORT_FRACT_TYPE_SIZE * 2)
507 #ifndef ACCUM_TYPE_SIZE
508 #define ACCUM_TYPE_SIZE (FRACT_TYPE_SIZE * 2)
511 #ifndef LONG_ACCUM_TYPE_SIZE
512 #define LONG_ACCUM_TYPE_SIZE (LONG_FRACT_TYPE_SIZE * 2)
515 #ifndef LONG_LONG_ACCUM_TYPE_SIZE
516 #define LONG_LONG_ACCUM_TYPE_SIZE (LONG_LONG_FRACT_TYPE_SIZE * 2)
519 /* We let tm.h override the types used here, to handle trivial differences
520 such as the choice of unsigned int or long unsigned int for size_t.
521 When machines start needing nontrivial differences in the size type,
522 it would be best to do something here to figure out automatically
523 from other information what type to use. */
526 #define SIZE_TYPE "long unsigned int"
530 #define PID_TYPE "int"
533 /* If GCC knows the exact uint_least16_t and uint_least32_t types from
534 <stdint.h>, use them for char16_t and char32_t. Otherwise, use
535 these guesses; getting the wrong type of a given width will not
536 affect C++ name mangling because in C++ these are distinct types
539 #ifdef UINT_LEAST16_TYPE
540 #define CHAR16_TYPE UINT_LEAST16_TYPE
542 #define CHAR16_TYPE "short unsigned int"
545 #ifdef UINT_LEAST32_TYPE
546 #define CHAR32_TYPE UINT_LEAST32_TYPE
548 #define CHAR32_TYPE "unsigned int"
552 #define WCHAR_TYPE "int"
555 /* WCHAR_TYPE gets overridden by -fshort-wchar. */
556 #define MODIFIED_WCHAR_TYPE \
557 (flag_short_wchar ? "short unsigned int" : WCHAR_TYPE)
560 #define PTRDIFF_TYPE "long int"
564 #define WINT_TYPE "unsigned int"
568 #define INTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
570 : ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
576 #define UINTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
578 : ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
579 ? "long unsigned int" \
580 : "long long unsigned int"))
584 /* There are no default definitions of these <stdint.h> types. */
586 #ifndef SIG_ATOMIC_TYPE
587 #define SIG_ATOMIC_TYPE ((const char *) NULL)
591 #define INT8_TYPE ((const char *) NULL)
595 #define INT16_TYPE ((const char *) NULL)
599 #define INT32_TYPE ((const char *) NULL)
603 #define INT64_TYPE ((const char *) NULL)
607 #define UINT8_TYPE ((const char *) NULL)
611 #define UINT16_TYPE ((const char *) NULL)
615 #define UINT32_TYPE ((const char *) NULL)
619 #define UINT64_TYPE ((const char *) NULL)
622 #ifndef INT_LEAST8_TYPE
623 #define INT_LEAST8_TYPE ((const char *) NULL)
626 #ifndef INT_LEAST16_TYPE
627 #define INT_LEAST16_TYPE ((const char *) NULL)
630 #ifndef INT_LEAST32_TYPE
631 #define INT_LEAST32_TYPE ((const char *) NULL)
634 #ifndef INT_LEAST64_TYPE
635 #define INT_LEAST64_TYPE ((const char *) NULL)
638 #ifndef UINT_LEAST8_TYPE
639 #define UINT_LEAST8_TYPE ((const char *) NULL)
642 #ifndef UINT_LEAST16_TYPE
643 #define UINT_LEAST16_TYPE ((const char *) NULL)
646 #ifndef UINT_LEAST32_TYPE
647 #define UINT_LEAST32_TYPE ((const char *) NULL)
650 #ifndef UINT_LEAST64_TYPE
651 #define UINT_LEAST64_TYPE ((const char *) NULL)
654 #ifndef INT_FAST8_TYPE
655 #define INT_FAST8_TYPE ((const char *) NULL)
658 #ifndef INT_FAST16_TYPE
659 #define INT_FAST16_TYPE ((const char *) NULL)
662 #ifndef INT_FAST32_TYPE
663 #define INT_FAST32_TYPE ((const char *) NULL)
666 #ifndef INT_FAST64_TYPE
667 #define INT_FAST64_TYPE ((const char *) NULL)
670 #ifndef UINT_FAST8_TYPE
671 #define UINT_FAST8_TYPE ((const char *) NULL)
674 #ifndef UINT_FAST16_TYPE
675 #define UINT_FAST16_TYPE ((const char *) NULL)
678 #ifndef UINT_FAST32_TYPE
679 #define UINT_FAST32_TYPE ((const char *) NULL)
682 #ifndef UINT_FAST64_TYPE
683 #define UINT_FAST64_TYPE ((const char *) NULL)
687 #define INTPTR_TYPE ((const char *) NULL)
691 #define UINTPTR_TYPE ((const char *) NULL)
694 /* Width in bits of a pointer. Mind the value of the macro `Pmode'. */
696 #define POINTER_SIZE BITS_PER_WORD
699 #ifndef PIC_OFFSET_TABLE_REGNUM
700 #define PIC_OFFSET_TABLE_REGNUM INVALID_REGNUM
703 #ifndef PIC_OFFSET_TABLE_REG_CALL_CLOBBERED
704 #define PIC_OFFSET_TABLE_REG_CALL_CLOBBERED 0
707 #ifndef TARGET_DLLIMPORT_DECL_ATTRIBUTES
708 #define TARGET_DLLIMPORT_DECL_ATTRIBUTES 0
711 #ifndef TARGET_DECLSPEC
712 #if TARGET_DLLIMPORT_DECL_ATTRIBUTES
713 /* If the target supports the "dllimport" attribute, users are
714 probably used to the "__declspec" syntax. */
715 #define TARGET_DECLSPEC 1
717 #define TARGET_DECLSPEC 0
721 /* By default, the preprocessor should be invoked the same way in C++
723 #ifndef CPLUSPLUS_CPP_SPEC
725 #define CPLUSPLUS_CPP_SPEC CPP_SPEC
729 #ifndef ACCUMULATE_OUTGOING_ARGS
730 #define ACCUMULATE_OUTGOING_ARGS 0
733 /* Supply a default definition for PUSH_ARGS. */
736 #define PUSH_ARGS !ACCUMULATE_OUTGOING_ARGS
742 /* Decide whether a function's arguments should be processed
743 from first to last or from last to first.
745 They should if the stack and args grow in opposite directions, but
746 only if we have push insns. */
750 #ifndef PUSH_ARGS_REVERSED
751 #if defined (STACK_GROWS_DOWNWARD) != defined (ARGS_GROW_DOWNWARD)
752 #define PUSH_ARGS_REVERSED PUSH_ARGS
758 #ifndef PUSH_ARGS_REVERSED
759 #define PUSH_ARGS_REVERSED 0
762 /* Default value for the alignment (in bits) a C conformant malloc has to
763 provide. This default is intended to be safe and always correct. */
764 #ifndef MALLOC_ABI_ALIGNMENT
765 #define MALLOC_ABI_ALIGNMENT BITS_PER_WORD
768 /* If PREFERRED_STACK_BOUNDARY is not defined, set it to STACK_BOUNDARY.
769 STACK_BOUNDARY is required. */
770 #ifndef PREFERRED_STACK_BOUNDARY
771 #define PREFERRED_STACK_BOUNDARY STACK_BOUNDARY
774 /* Set INCOMING_STACK_BOUNDARY to PREFERRED_STACK_BOUNDARY if it is not
776 #ifndef INCOMING_STACK_BOUNDARY
777 #define INCOMING_STACK_BOUNDARY PREFERRED_STACK_BOUNDARY
780 #ifndef TARGET_DEFAULT_PACK_STRUCT
781 #define TARGET_DEFAULT_PACK_STRUCT 0
784 /* By default, the vtable entries are void pointers, the so the alignment
785 is the same as pointer alignment. The value of this macro specifies
786 the alignment of the vtable entry in bits. It should be defined only
787 when special alignment is necessary. */
788 #ifndef TARGET_VTABLE_ENTRY_ALIGN
789 #define TARGET_VTABLE_ENTRY_ALIGN POINTER_SIZE
792 /* There are a few non-descriptor entries in the vtable at offsets below
793 zero. If these entries must be padded (say, to preserve the alignment
794 specified by TARGET_VTABLE_ENTRY_ALIGN), set this to the number of
795 words in each data entry. */
796 #ifndef TARGET_VTABLE_DATA_ENTRY_DISTANCE
797 #define TARGET_VTABLE_DATA_ENTRY_DISTANCE 1
800 /* Decide whether it is safe to use a local alias for a virtual function
801 when constructing thunks. */
802 #ifndef TARGET_USE_LOCAL_THUNK_ALIAS_P
803 #ifdef ASM_OUTPUT_DEF
804 #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 1
806 #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 0
810 /* Select a format to encode pointers in exception handling data. We
811 prefer those that result in fewer dynamic relocations. Assume no
812 special support here and encode direct references. */
813 #ifndef ASM_PREFERRED_EH_DATA_FORMAT
814 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) DW_EH_PE_absptr
817 /* By default, the C++ compiler will use the lowest bit of the pointer
818 to function to indicate a pointer-to-member-function points to a
819 virtual member function. However, if FUNCTION_BOUNDARY indicates
820 function addresses aren't always even, the lowest bit of the delta
821 field will be used. */
822 #ifndef TARGET_PTRMEMFUNC_VBIT_LOCATION
823 #define TARGET_PTRMEMFUNC_VBIT_LOCATION \
824 (FUNCTION_BOUNDARY >= 2 * BITS_PER_UNIT \
825 ? ptrmemfunc_vbit_in_pfn : ptrmemfunc_vbit_in_delta)
828 #ifndef DEFAULT_GDB_EXTENSIONS
829 #define DEFAULT_GDB_EXTENSIONS 1
832 /* If more than one debugging type is supported, you must define
833 PREFERRED_DEBUGGING_TYPE to choose the default. */
835 #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) \
836 + defined (DWARF2_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO) \
837 + defined (VMS_DEBUGGING_INFO))
838 #ifndef PREFERRED_DEBUGGING_TYPE
839 #error You must define PREFERRED_DEBUGGING_TYPE
840 #endif /* no PREFERRED_DEBUGGING_TYPE */
842 /* If only one debugging format is supported, define PREFERRED_DEBUGGING_TYPE
843 here so other code needn't care. */
844 #elif defined DBX_DEBUGGING_INFO
845 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
847 #elif defined SDB_DEBUGGING_INFO
848 #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG
850 #elif defined DWARF2_DEBUGGING_INFO
851 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
853 #elif defined VMS_DEBUGGING_INFO
854 #define PREFERRED_DEBUGGING_TYPE VMS_AND_DWARF2_DEBUG
856 #elif defined XCOFF_DEBUGGING_INFO
857 #define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG
860 /* No debugging format is supported by this target. */
861 #define PREFERRED_DEBUGGING_TYPE NO_DEBUG
864 #ifndef LARGEST_EXPONENT_IS_NORMAL
865 #define LARGEST_EXPONENT_IS_NORMAL(SIZE) 0
868 #ifndef ROUND_TOWARDS_ZERO
869 #define ROUND_TOWARDS_ZERO 0
872 #ifndef FLOAT_LIB_COMPARE_RETURNS_BOOL
873 #define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) false
876 /* True if the targets integer-comparison functions return { 0, 1, 2
877 } to indicate { <, ==, > }. False if { -1, 0, 1 } is used
878 instead. The libgcc routines are biased. */
879 #ifndef TARGET_LIB_INT_CMP_BIASED
880 #define TARGET_LIB_INT_CMP_BIASED (true)
883 /* If FLOAT_WORDS_BIG_ENDIAN is not defined in the header files,
884 then the word-endianness is the same as for integers. */
885 #ifndef FLOAT_WORDS_BIG_ENDIAN
886 #define FLOAT_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
889 #ifdef TARGET_FLT_EVAL_METHOD
890 #define TARGET_FLT_EVAL_METHOD_NON_DEFAULT 1
892 #define TARGET_FLT_EVAL_METHOD 0
893 #define TARGET_FLT_EVAL_METHOD_NON_DEFAULT 0
896 #ifndef TARGET_DEC_EVAL_METHOD
897 #define TARGET_DEC_EVAL_METHOD 2
900 #ifndef HAS_LONG_COND_BRANCH
901 #define HAS_LONG_COND_BRANCH 0
904 #ifndef HAS_LONG_UNCOND_BRANCH
905 #define HAS_LONG_UNCOND_BRANCH 0
908 /* Determine whether __cxa_atexit, rather than atexit, is used to
909 register C++ destructors for local statics and global objects. */
910 #ifndef DEFAULT_USE_CXA_ATEXIT
911 #define DEFAULT_USE_CXA_ATEXIT 0
914 /* If none of these macros are defined, the port must use the new
915 technique of defining constraints in the machine description.
916 tm_p.h will define those macros that machine-independent code
918 #if !defined CONSTRAINT_LEN \
919 && !defined REG_CLASS_FROM_LETTER \
920 && !defined REG_CLASS_FROM_CONSTRAINT \
921 && !defined CONST_OK_FOR_LETTER_P \
922 && !defined CONST_OK_FOR_CONSTRAINT_P \
923 && !defined CONST_DOUBLE_OK_FOR_LETTER_P \
924 && !defined CONST_DOUBLE_OK_FOR_CONSTRAINT_P \
925 && !defined EXTRA_CONSTRAINT \
926 && !defined EXTRA_CONSTRAINT_STR \
927 && !defined EXTRA_MEMORY_CONSTRAINT \
928 && !defined EXTRA_ADDRESS_CONSTRAINT
930 #define USE_MD_CONSTRAINTS
932 #if GCC_VERSION >= 3000 && defined IN_GCC
933 /* These old constraint macros shouldn't appear anywhere in a
934 configuration using MD constraint definitions. */
935 #pragma GCC poison REG_CLASS_FROM_LETTER CONST_OK_FOR_LETTER_P \
936 CONST_DOUBLE_OK_FOR_LETTER_P EXTRA_CONSTRAINT
939 #else /* old constraint mechanism in use */
941 /* Determine whether extra constraint letter should be handled
942 via address reload (like 'o'). */
943 #ifndef EXTRA_MEMORY_CONSTRAINT
944 #define EXTRA_MEMORY_CONSTRAINT(C,STR) 0
947 /* Determine whether extra constraint letter should be handled
948 as an address (like 'p'). */
949 #ifndef EXTRA_ADDRESS_CONSTRAINT
950 #define EXTRA_ADDRESS_CONSTRAINT(C,STR) 0
953 /* When a port defines CONSTRAINT_LEN, it should use DEFAULT_CONSTRAINT_LEN
954 for all the characters that it does not want to change, so things like the
955 'length' of a digit in a matching constraint is an implementation detail,
956 and not part of the interface. */
957 #define DEFAULT_CONSTRAINT_LEN(C,STR) 1
959 #ifndef CONSTRAINT_LEN
960 #define CONSTRAINT_LEN(C,STR) DEFAULT_CONSTRAINT_LEN (C, STR)
963 #if defined (CONST_OK_FOR_LETTER_P) && ! defined (CONST_OK_FOR_CONSTRAINT_P)
964 #define CONST_OK_FOR_CONSTRAINT_P(VAL,C,STR) CONST_OK_FOR_LETTER_P (VAL, C)
967 #if defined (CONST_DOUBLE_OK_FOR_LETTER_P) && ! defined (CONST_DOUBLE_OK_FOR_CONSTRAINT_P)
968 #define CONST_DOUBLE_OK_FOR_CONSTRAINT_P(OP,C,STR) \
969 CONST_DOUBLE_OK_FOR_LETTER_P (OP, C)
972 #ifndef REG_CLASS_FROM_CONSTRAINT
973 #define REG_CLASS_FROM_CONSTRAINT(C,STR) REG_CLASS_FROM_LETTER (C)
976 #if defined (EXTRA_CONSTRAINT) && ! defined (EXTRA_CONSTRAINT_STR)
977 #define EXTRA_CONSTRAINT_STR(OP, C,STR) EXTRA_CONSTRAINT (OP, C)
980 #endif /* old constraint mechanism in use */
982 /* Determine whether the entire c99 runtime
983 is present in the runtime library. */
984 #ifndef TARGET_C99_FUNCTIONS
985 #define TARGET_C99_FUNCTIONS 0
988 /* Determine whether the target runtime library has
989 a sincos implementation following the GNU extension. */
990 #ifndef TARGET_HAS_SINCOS
991 #define TARGET_HAS_SINCOS 0
994 /* Indicate that CLZ and CTZ are undefined at zero. */
995 #ifndef CLZ_DEFINED_VALUE_AT_ZERO
996 #define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0
998 #ifndef CTZ_DEFINED_VALUE_AT_ZERO
999 #define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0
1002 /* Provide a default value for STORE_FLAG_VALUE. */
1003 #ifndef STORE_FLAG_VALUE
1004 #define STORE_FLAG_VALUE 1
1007 /* This macro is used to determine what the largest unit size that
1008 move_by_pieces can use is. */
1010 /* MOVE_MAX_PIECES is the number of bytes at a time which we can
1011 move efficiently, as opposed to MOVE_MAX which is the maximum
1012 number of bytes we can move with a single instruction. */
1014 #ifndef MOVE_MAX_PIECES
1015 #define MOVE_MAX_PIECES MOVE_MAX
1018 #ifndef MAX_MOVE_MAX
1019 #define MAX_MOVE_MAX MOVE_MAX
1022 #ifndef MIN_UNITS_PER_WORD
1023 #define MIN_UNITS_PER_WORD UNITS_PER_WORD
1026 #ifndef MAX_BITS_PER_WORD
1027 #define MAX_BITS_PER_WORD BITS_PER_WORD
1030 #ifndef STACK_POINTER_OFFSET
1031 #define STACK_POINTER_OFFSET 0
1035 #define LOCAL_REGNO(REGNO) 0
1038 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
1039 the stack pointer does not matter. The value is tested only in
1040 functions that have frame pointers. */
1041 #ifndef EXIT_IGNORE_STACK
1042 #define EXIT_IGNORE_STACK 0
1045 /* Assume that case vectors are not pc-relative. */
1046 #ifndef CASE_VECTOR_PC_RELATIVE
1047 #define CASE_VECTOR_PC_RELATIVE 0
1050 /* Assume that trampolines need function alignment. */
1051 #ifndef TRAMPOLINE_ALIGNMENT
1052 #define TRAMPOLINE_ALIGNMENT FUNCTION_BOUNDARY
1055 /* Register mappings for target machines without register windows. */
1056 #ifndef INCOMING_REGNO
1057 #define INCOMING_REGNO(N) (N)
1060 #ifndef OUTGOING_REGNO
1061 #define OUTGOING_REGNO(N) (N)
1064 #ifndef SHIFT_COUNT_TRUNCATED
1065 #define SHIFT_COUNT_TRUNCATED 0
1068 #ifndef LEGITIMATE_PIC_OPERAND_P
1069 #define LEGITIMATE_PIC_OPERAND_P(X) 1
1072 #ifndef TARGET_MEM_CONSTRAINT
1073 #define TARGET_MEM_CONSTRAINT 'm'
1076 #ifndef REVERSIBLE_CC_MODE
1077 #define REVERSIBLE_CC_MODE(MODE) 0
1080 /* Biggest alignment supported by the object file format of this machine. */
1081 #ifndef MAX_OFILE_ALIGNMENT
1082 #define MAX_OFILE_ALIGNMENT BIGGEST_ALIGNMENT
1085 #ifndef FRAME_GROWS_DOWNWARD
1086 #define FRAME_GROWS_DOWNWARD 0
1089 /* On most machines, the CFA coincides with the first incoming parm. */
1090 #ifndef ARG_POINTER_CFA_OFFSET
1091 #define ARG_POINTER_CFA_OFFSET(FNDECL) \
1092 (FIRST_PARM_OFFSET (FNDECL) + crtl->args.pretend_args_size)
1095 /* On most machines, we use the CFA as DW_AT_frame_base. */
1096 #ifndef CFA_FRAME_BASE_OFFSET
1097 #define CFA_FRAME_BASE_OFFSET(FNDECL) 0
1100 /* The offset from the incoming value of %sp to the top of the stack frame
1101 for the current function. */
1102 #ifndef INCOMING_FRAME_SP_OFFSET
1103 #define INCOMING_FRAME_SP_OFFSET 0
1106 #ifndef HARD_REGNO_NREGS_HAS_PADDING
1107 #define HARD_REGNO_NREGS_HAS_PADDING(REGNO, MODE) 0
1108 #define HARD_REGNO_NREGS_WITH_PADDING(REGNO, MODE) -1
1111 #ifndef OUTGOING_REG_PARM_STACK_SPACE
1112 #define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) 0
1115 /* MAX_STACK_ALIGNMENT is the maximum stack alignment guaranteed by
1116 the backend. MAX_SUPPORTED_STACK_ALIGNMENT is the maximum best
1117 effort stack alignment supported by the backend. If the backend
1118 supports stack alignment, MAX_SUPPORTED_STACK_ALIGNMENT and
1119 MAX_STACK_ALIGNMENT are the same. Otherwise, the incoming stack
1120 boundary will limit the maximum guaranteed stack alignment. */
1121 #ifdef MAX_STACK_ALIGNMENT
1122 #define MAX_SUPPORTED_STACK_ALIGNMENT MAX_STACK_ALIGNMENT
1124 #define MAX_STACK_ALIGNMENT STACK_BOUNDARY
1125 #define MAX_SUPPORTED_STACK_ALIGNMENT PREFERRED_STACK_BOUNDARY
1128 #define SUPPORTS_STACK_ALIGNMENT (MAX_STACK_ALIGNMENT > STACK_BOUNDARY)
1130 #ifndef LOCAL_ALIGNMENT
1131 #define LOCAL_ALIGNMENT(TYPE, ALIGNMENT) ALIGNMENT
1134 #ifndef STACK_SLOT_ALIGNMENT
1135 #define STACK_SLOT_ALIGNMENT(TYPE,MODE,ALIGN) \
1136 ((TYPE) ? LOCAL_ALIGNMENT ((TYPE), (ALIGN)) : (ALIGN))
1139 #ifndef LOCAL_DECL_ALIGNMENT
1140 #define LOCAL_DECL_ALIGNMENT(DECL) \
1141 LOCAL_ALIGNMENT (TREE_TYPE (DECL), DECL_ALIGN (DECL))
1144 #ifndef MINIMUM_ALIGNMENT
1145 #define MINIMUM_ALIGNMENT(EXP,MODE,ALIGN) (ALIGN)
1148 /* Alignment value for attribute ((aligned)). */
1149 #ifndef ATTRIBUTE_ALIGNED_VALUE
1150 #define ATTRIBUTE_ALIGNED_VALUE BIGGEST_ALIGNMENT
1153 /* Many ports have no mode-dependent addresses (except possibly autoincrement
1154 and autodecrement addresses, which are handled by target-independent code
1156 #ifndef GO_IF_MODE_DEPENDENT_ADDRESS
1157 #define GO_IF_MODE_DEPENDENT_ADDRESS(X, WIN)
1160 /* For most ports anything that evaluates to a constant symbolic
1161 or integer value is acceptable as a constant address. */
1162 #ifndef CONSTANT_ADDRESS_P
1163 #define CONSTANT_ADDRESS_P(X) (CONSTANT_P (X) && GET_CODE (X) != CONST_DOUBLE)
1166 #ifndef MAX_FIXED_MODE_SIZE
1167 #define MAX_FIXED_MODE_SIZE GET_MODE_BITSIZE (DImode)
1170 /* Nonzero if structures and unions should be returned in memory.
1172 This should only be defined if compatibility with another compiler or
1173 with an ABI is needed, because it results in slower code. */
1175 #ifndef DEFAULT_PCC_STRUCT_RETURN
1176 #define DEFAULT_PCC_STRUCT_RETURN 1
1179 #ifdef GCC_INSN_FLAGS_H
1180 /* Dependent default target macro definitions
1182 This section of defaults.h defines target macros that depend on generated
1183 headers. This is a bit awkward: We want to put all default definitions
1184 for target macros in defaults.h, but some of the defaults depend on the
1185 HAVE_* flags defines of insn-flags.h. But insn-flags.h is not always
1186 included by files that do include defaults.h.
1188 Fortunately, the default macro definitions that depend on the HAVE_*
1189 macros are also the ones that will only be used inside GCC itself, i.e.
1190 not in the gen* programs or in target objects like libgcc.
1192 Obviously, it would be best to keep this section of defaults.h as small
1193 as possible, by converting the macros defined below to target hooks or
1197 /* The default branch cost is 1. */
1199 #define BRANCH_COST(speed_p, predictable_p) 1
1202 /* If a memory-to-memory move would take MOVE_RATIO or more simple
1203 move-instruction sequences, we will do a movmem or libcall instead. */
1206 #if defined (HAVE_movmemqi) || defined (HAVE_movmemhi) || defined (HAVE_movmemsi) || defined (HAVE_movmemdi) || defined (HAVE_movmemti)
1207 #define MOVE_RATIO(speed) 2
1209 /* If we are optimizing for space (-Os), cut down the default move ratio. */
1210 #define MOVE_RATIO(speed) ((speed) ? 15 : 3)
1214 /* If a clear memory operation would take CLEAR_RATIO or more simple
1215 move-instruction sequences, we will do a setmem or libcall instead. */
1218 #if defined (HAVE_setmemqi) || defined (HAVE_setmemhi) || defined (HAVE_setmemsi) || defined (HAVE_setmemdi) || defined (HAVE_setmemti)
1219 #define CLEAR_RATIO(speed) 2
1221 /* If we are optimizing for space, cut down the default clear ratio. */
1222 #define CLEAR_RATIO(speed) ((speed) ? 15 :3)
1226 /* If a memory set (to value other than zero) operation would take
1227 SET_RATIO or more simple move-instruction sequences, we will do a movmem
1228 or libcall instead. */
1230 #define SET_RATIO(speed) MOVE_RATIO(speed)
1233 /* Supply a default definition for FUNCTION_ARG_PADDING:
1234 usually pad upward, but pad short args downward on
1235 big-endian machines. */
1237 #define DEFAULT_FUNCTION_ARG_PADDING(MODE, TYPE) \
1238 (! BYTES_BIG_ENDIAN \
1240 : (((MODE) == BLKmode \
1241 ? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \
1242 && int_size_in_bytes (TYPE) < (PARM_BOUNDARY / BITS_PER_UNIT)) \
1243 : GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY) \
1244 ? downward : upward))
1246 #ifndef FUNCTION_ARG_PADDING
1247 #define FUNCTION_ARG_PADDING(MODE, TYPE) \
1248 DEFAULT_FUNCTION_ARG_PADDING ((MODE), (TYPE))
1251 /* Supply a default definition of STACK_SAVEAREA_MODE for emit_stack_save.
1252 Normally move_insn, so Pmode stack pointer. */
1254 #ifndef STACK_SAVEAREA_MODE
1255 #define STACK_SAVEAREA_MODE(LEVEL) Pmode
1258 /* Supply a default definition of STACK_SIZE_MODE for
1259 allocate_dynamic_stack_space. Normally PLUS/MINUS, so word_mode. */
1261 #ifndef STACK_SIZE_MODE
1262 #define STACK_SIZE_MODE word_mode
1265 /* Provide default values for the macros controlling stack checking. */
1267 /* The default is neither full builtin stack checking... */
1268 #ifndef STACK_CHECK_BUILTIN
1269 #define STACK_CHECK_BUILTIN 0
1272 /* ...nor static builtin stack checking. */
1273 #ifndef STACK_CHECK_STATIC_BUILTIN
1274 #define STACK_CHECK_STATIC_BUILTIN 0
1277 /* The default interval is one page (4096 bytes). */
1278 #ifndef STACK_CHECK_PROBE_INTERVAL_EXP
1279 #define STACK_CHECK_PROBE_INTERVAL_EXP 12
1282 /* The default is not to move the stack pointer. */
1283 #ifndef STACK_CHECK_MOVING_SP
1284 #define STACK_CHECK_MOVING_SP 0
1287 /* This is a kludge to try to capture the discrepancy between the old
1288 mechanism (generic stack checking) and the new mechanism (static
1289 builtin stack checking). STACK_CHECK_PROTECT needs to be bumped
1290 for the latter because part of the protection area is effectively
1291 included in STACK_CHECK_MAX_FRAME_SIZE for the former. */
1292 #ifdef STACK_CHECK_PROTECT
1293 #define STACK_OLD_CHECK_PROTECT STACK_CHECK_PROTECT
1295 #define STACK_OLD_CHECK_PROTECT \
1296 (targetm.except_unwind_info (&global_options) == UI_SJLJ \
1297 ? 75 * UNITS_PER_WORD \
1301 /* Minimum amount of stack required to recover from an anticipated stack
1302 overflow detection. The default value conveys an estimate of the amount
1303 of stack required to propagate an exception. */
1304 #ifndef STACK_CHECK_PROTECT
1305 #define STACK_CHECK_PROTECT \
1306 (targetm.except_unwind_info (&global_options) == UI_SJLJ \
1307 ? 75 * UNITS_PER_WORD \
1311 /* Make the maximum frame size be the largest we can and still only need
1312 one probe per function. */
1313 #ifndef STACK_CHECK_MAX_FRAME_SIZE
1314 #define STACK_CHECK_MAX_FRAME_SIZE \
1315 ((1 << STACK_CHECK_PROBE_INTERVAL_EXP) - UNITS_PER_WORD)
1318 /* This is arbitrary, but should be large enough everywhere. */
1319 #ifndef STACK_CHECK_FIXED_FRAME_SIZE
1320 #define STACK_CHECK_FIXED_FRAME_SIZE (4 * UNITS_PER_WORD)
1323 /* Provide a reasonable default for the maximum size of an object to
1324 allocate in the fixed frame. We may need to be able to make this
1325 controllable by the user at some point. */
1326 #ifndef STACK_CHECK_MAX_VAR_SIZE
1327 #define STACK_CHECK_MAX_VAR_SIZE (STACK_CHECK_MAX_FRAME_SIZE / 100)
1330 /* By default, the C++ compiler will use function addresses in the
1331 vtable entries. Setting this nonzero tells the compiler to use
1332 function descriptors instead. The value of this macro says how
1333 many words wide the descriptor is (normally 2). It is assumed
1334 that the address of a function descriptor may be treated as a
1335 pointer to a function. */
1336 #ifndef TARGET_VTABLE_USES_DESCRIPTORS
1337 #define TARGET_VTABLE_USES_DESCRIPTORS 0
1340 #ifndef SWITCHABLE_TARGET
1341 #define SWITCHABLE_TARGET 0
1344 #endif /* GCC_INSN_FLAGS_H */
1346 #endif /* ! GCC_DEFAULTS_H */