[thirdparty/gcc.git] / gcc / defaults.h

/* Definitions of various defaults for tm.h macros.
   Copyright (C) 1992, 1996, 1997, 1998, 1999, 2000, 2001
   Free Software Foundation, Inc.
   Contributed by Ron Guilmette (rfg@monkeys.com)

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any later
version.

GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING.  If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA.  */

#ifndef GCC_DEFAULTS_H
#define GCC_DEFAULTS_H

/* Define default standard character escape sequences.  */
#ifndef TARGET_BELL
#  define TARGET_BELL 007
#  define TARGET_BS 010
#  define TARGET_TAB 011
#  define TARGET_NEWLINE 012
#  define TARGET_VT 013
#  define TARGET_FF 014
#  define TARGET_CR 015
#  define TARGET_ESC 033
#endif

/* Store in OUTPUT a string (made with alloca) containing
   an assembler-name for a local static variable or function named NAME.
   LABELNO is an integer which is different for each call.  */

#ifndef ASM_FORMAT_PRIVATE_NAME
#define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO)			\
  do {									\
    int len = strlen (NAME);						\
    char *temp = (char *) alloca (len + 3);				\
    temp[0] = 'L';							\
    strcpy (&temp[1], (NAME));						\
    temp[len + 1] = '.';						\
    temp[len + 2] = 0;							\
    (OUTPUT) = (char *) alloca (strlen (NAME) + 11);			\
    ASM_GENERATE_INTERNAL_LABEL (OUTPUT, temp, LABELNO);		\
  } while (0)
#endif

#ifndef ASM_STABD_OP
#define ASM_STABD_OP "\t.stabd\t"
#endif

/* This is how to output an element of a case-vector that is absolute.
   Some targets don't use this, but we have to define it anyway.  */

#ifndef ASM_OUTPUT_ADDR_VEC_ELT
#define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE)  \
do { fprintf (FILE, "\t%s\t", ASM_LONG);				\
     ASM_OUTPUT_INTERNAL_LABEL (FILE, "L", (VALUE));			\
     fputc ('\n', FILE);						\
   } while (0)
#endif

/* Provide default for ASM_OUTPUT_ALTERNATE_LABEL_NAME.  */
#ifndef ASM_OUTPUT_ALTERNATE_LABEL_NAME
#define ASM_OUTPUT_ALTERNATE_LABEL_NAME(FILE,INSN) \
do { ASM_OUTPUT_LABEL(FILE,LABEL_ALTERNATE_NAME (INSN)); } while (0)
#endif

/* choose a reasonable default for ASM_OUTPUT_ASCII.  */

#ifndef ASM_OUTPUT_ASCII
#define ASM_OUTPUT_ASCII(MYFILE, MYSTRING, MYLENGTH) \
  do {									      \
    FILE *_hide_asm_out_file = (MYFILE);				      \
    const unsigned char *_hide_p = (const unsigned char *) (MYSTRING);	      \
    int _hide_thissize = (MYLENGTH);					      \
    {									      \
      FILE *asm_out_file = _hide_asm_out_file;				      \
      const unsigned char *p = _hide_p;					      \
      int thissize = _hide_thissize;					      \
      int i;								      \
      fprintf (asm_out_file, "\t.ascii \"");				      \
									      \
      for (i = 0; i < thissize; i++)					      \
	{								      \
	  int c = p[i];			   				      \
	  if (c == '\"' || c == '\\')					      \
	    putc ('\\', asm_out_file);					      \
	  if (ISPRINT(c))						      \
	    putc (c, asm_out_file);					      \
	  else								      \
	    {								      \
	      fprintf (asm_out_file, "\\%o", c);			      \
	      /* After an octal-escape, if a digit follows,		      \
		 terminate one string constant and start another.	      \
		 The VAX assembler fails to stop reading the escape	      \
		 after three digits, so this is the only way we		      \
		 can get it to parse the data properly.  */		      \
	      if (i < thissize - 1 && ISDIGIT(p[i + 1]))		      \
		fprintf (asm_out_file, "\"\n\t.ascii \"");		      \
	  }								      \
	}								      \
      fprintf (asm_out_file, "\"\n");					      \
    }									      \
  }									      \
  while (0)
#endif

/* This is how we tell the assembler to equate two values.  */
#ifdef SET_ASM_OP
#ifndef ASM_OUTPUT_DEF
#define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2)				\
 do {	fprintf ((FILE), "%s", SET_ASM_OP);				\
	assemble_name (FILE, LABEL1);					\
	fprintf (FILE, ",");						\
	assemble_name (FILE, LABEL2);					\
	fprintf (FILE, "\n");						\
  } while (0)
#endif
#endif

/* This is how to output a reference to a user-level label named NAME.  */

#ifndef ASM_OUTPUT_LABELREF
#define ASM_OUTPUT_LABELREF(FILE,NAME)  asm_fprintf ((FILE), "%U%s", (NAME))
#endif

/* Allow target to print debug info labels specially.  This is useful for
   VLIW targets, since debug info labels should go into the middle of
   instruction bundles instead of breaking them.  */

#ifndef ASM_OUTPUT_DEBUG_LABEL
#define ASM_OUTPUT_DEBUG_LABEL(FILE, PREFIX, NUM) \
  ASM_OUTPUT_INTERNAL_LABEL (FILE, PREFIX, NUM)
#endif

/* This is how we tell the assembler that a symbol is weak.  */
#ifndef ASM_OUTPUT_WEAK_ALIAS
#if defined (ASM_WEAKEN_LABEL) && defined (ASM_OUTPUT_DEF)
#define ASM_OUTPUT_WEAK_ALIAS(STREAM, NAME, VALUE)	\
  do							\
    {							\
      ASM_WEAKEN_LABEL (STREAM, NAME);			\
      if (VALUE)					\
        ASM_OUTPUT_DEF (STREAM, NAME, VALUE);		\
    }							\
  while (0)
#endif
#endif

/* This determines whether or not we support weak symbols.  */
#ifndef SUPPORTS_WEAK
#ifdef ASM_WEAKEN_LABEL
#define SUPPORTS_WEAK 1
#else
#define SUPPORTS_WEAK 0
#endif
#endif

/* This determines whether or not we support link-once semantics.  */
#ifndef SUPPORTS_ONE_ONLY
#ifdef MAKE_DECL_ONE_ONLY
#define SUPPORTS_ONE_ONLY 1
#else
#define SUPPORTS_ONE_ONLY 0
#endif
#endif

/* If the target supports weak symbols, define TARGET_ATTRIBUTE_WEAK to
   provide a weak attribute.  Else define it to nothing. 

   This would normally belong in ansidecl.h, but SUPPORTS_WEAK is
   not available at that time.

   Note, this is only for use by target files which we know are to be
   compiled by GCC.  */
#ifndef TARGET_ATTRIBUTE_WEAK
# if SUPPORTS_WEAK
#  define TARGET_ATTRIBUTE_WEAK __attribute__ ((weak))
# else
#  define TARGET_ATTRIBUTE_WEAK
# endif
#endif

/* If the target supports init_priority C++ attribute, give
   SUPPORTS_INIT_PRIORITY a nonzero value.  */
#ifndef SUPPORTS_INIT_PRIORITY
#define SUPPORTS_INIT_PRIORITY 1
#endif /* SUPPORTS_INIT_PRIORITY */

/* If duplicate library search directories can be removed from a
   linker command without changing the linker's semantics, give this
   symbol a nonzero.  */
#ifndef LINK_ELIMINATE_DUPLICATE_LDIRECTORIES
#define LINK_ELIMINATE_DUPLICATE_LDIRECTORIES 0
#endif /* LINK_ELIMINATE_DUPLICATE_LDIRECTORIES */

/* If we have a definition of INCOMING_RETURN_ADDR_RTX, assume that
   the rest of the DWARF 2 frame unwind support is also provided.  */
#if !defined (DWARF2_UNWIND_INFO) && defined (INCOMING_RETURN_ADDR_RTX)
#define DWARF2_UNWIND_INFO 1
#endif

/* If we have named sections, and we're using crtstuff to run ctors,
   use them for registering eh frame information.  */
#if defined (TARGET_ASM_NAMED_SECTION) && !defined(EH_FRAME_IN_DATA_SECTION)
#ifndef EH_FRAME_SECTION_NAME
#define EH_FRAME_SECTION_NAME ".eh_frame"
#endif
#endif

/* If we have named section and we support weak symbols, then use the
   .jcr section for recording java classes which need to be registered
   at program start-up time.  */
#if defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK
#ifndef JCR_SECTION_NAME
#define JCR_SECTION_NAME ".jcr"
#endif
#endif

/* If we have no definition for UNIQUE_SECTION, but do have the 
   ability to generate arbitrary sections, construct something
   reasonable.  */
#ifndef UNIQUE_SECTION
#define UNIQUE_SECTION(DECL,RELOC)				\
do {								\
  int len;							\
  const char *name;						\
  char *string;							\
								\
  name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL));	\
  /* Strip off any encoding in name.  */			\
  STRIP_NAME_ENCODING (name, name);				\
								\
  len = strlen (name) + 1;					\
  string = alloca (len + 1);					\
  sprintf (string, ".%s", name);				\
								\
  DECL_SECTION_NAME (DECL) = build_string (len, string);	\
} while (0)
#endif

/* By default, we generate a label at the beginning and end of the
   text section, and compute the size of the text section by
   subtracting the two.  However, on some platforms that doesn't 
   work, and we use the section itself, rather than a label at the
   beginning of it, to indicate the start of the section.  On such
   platforms, define this to zero.  */
#ifndef DWARF2_GENERATE_TEXT_SECTION_LABEL
#define DWARF2_GENERATE_TEXT_SECTION_LABEL 1
#endif

/* Supply a default definition for PROMOTE_PROTOTYPES.  */
#ifndef PROMOTE_PROTOTYPES
#define PROMOTE_PROTOTYPES	0
#endif

/* Number of hardware registers that go into the DWARF-2 unwind info.
   If not defined, equals FIRST_PSEUDO_REGISTER  */

#ifndef DWARF_FRAME_REGISTERS
#define DWARF_FRAME_REGISTERS FIRST_PSEUDO_REGISTER
#endif

/* Default sizes for base C types.  If the sizes are different for
   your target, you should override these values by defining the
   appropriate symbols in your tm.h file.  */

#ifndef CHAR_TYPE_SIZE
#define CHAR_TYPE_SIZE BITS_PER_UNIT
#endif

#ifndef SHORT_TYPE_SIZE
#define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2))
#endif

#ifndef INT_TYPE_SIZE
#define INT_TYPE_SIZE BITS_PER_WORD
#endif

#ifndef LONG_TYPE_SIZE
#define LONG_TYPE_SIZE BITS_PER_WORD
#endif

#ifndef LONG_LONG_TYPE_SIZE
#define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2)
#endif

#ifndef WCHAR_TYPE_SIZE
#define WCHAR_TYPE_SIZE INT_TYPE_SIZE
#endif

#ifndef WCHAR_UNSIGNED
#define WCHAR_UNSIGNED 0
#endif

#ifndef FLOAT_TYPE_SIZE
#define FLOAT_TYPE_SIZE BITS_PER_WORD
#endif

#ifndef DOUBLE_TYPE_SIZE
#define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
#endif

#ifndef LONG_DOUBLE_TYPE_SIZE
#define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
#endif

#ifndef BUILD_VA_LIST_TYPE
#define BUILD_VA_LIST_TYPE(X) ((X) = ptr_type_node)
#endif

#ifndef PIC_OFFSET_TABLE_REGNUM
#define PIC_OFFSET_TABLE_REGNUM INVALID_REGNUM
#endif

/* Type used by GCOV counters.  Use 64bit data type if target supports
   it.  */
#if LONG_TYPE_SIZE >= 64
#define GCOV_TYPE_SIZE LONG_TYPE_SIZE
#else
#define GCOV_TYPE_SIZE LONG_LONG_TYPE_SIZE
#endif


/* By default, the preprocessor should be invoked the same way in C++
   as in C.  */
#ifndef CPLUSPLUS_CPP_SPEC
#ifdef CPP_SPEC
#define CPLUSPLUS_CPP_SPEC CPP_SPEC
#endif
#endif

#ifndef ACCUMULATE_OUTGOING_ARGS
#define ACCUMULATE_OUTGOING_ARGS 0
#endif

/* Supply a default definition for PUSH_ARGS.  */
#ifndef PUSH_ARGS
#ifdef PUSH_ROUNDING
#define PUSH_ARGS	!ACCUMULATE_OUTGOING_ARGS
#else
#define PUSH_ARGS	0
#endif
#endif

/* If PREFERRED_STACK_BOUNDARY is not defined, set it to STACK_BOUNDARY.
   STACK_BOUNDARY is required.  */
#ifndef PREFERRED_STACK_BOUNDARY
#define PREFERRED_STACK_BOUNDARY STACK_BOUNDARY
#endif

/* By default, the C++ compiler will use function addresses in the
   vtable entries.  Setting this non-zero tells the compiler to use
   function descriptors instead.  The value of this macro says how
   many words wide the descriptor is (normally 2).  It is assumed 
   that the address of a function descriptor may be treated as a
   pointer to a function.  */
#ifndef TARGET_VTABLE_USES_DESCRIPTORS
#define TARGET_VTABLE_USES_DESCRIPTORS 0
#endif

/* Select a format to encode pointers in exception handling data.  We
   prefer those that result in fewer dynamic relocations.  Assume no
   special support here and encode direct references.  */
#ifndef ASM_PREFERRED_EH_DATA_FORMAT
#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)  DW_EH_PE_absptr
#endif

/* By default, the C++ compiler will use the lowest bit of the pointer
   to function to indicate a pointer-to-member-function points to a
   virtual member function.  However, if FUNCTION_BOUNDARY indicates
   function addresses aren't always even, the lowest bit of the delta
   field will be used.  */
#ifndef TARGET_PTRMEMFUNC_VBIT_LOCATION
#define TARGET_PTRMEMFUNC_VBIT_LOCATION \
  (FUNCTION_BOUNDARY >= 2 * BITS_PER_UNIT \
   ? ptrmemfunc_vbit_in_pfn : ptrmemfunc_vbit_in_delta)
#endif

/* True if it is possible to profile code that does not have a frame
   pointer.  */

#ifndef TARGET_ALLOWS_PROFILING_WITHOUT_FRAME_POINTER
#define TARGET_ALLOWS_PROFILING_WITHOUT_FRAME_POINTER true
#endif

/* GAS and SYSV4 assemblers accept these.  */
#ifdef OBJECT_FORMAT_ELF
#ifndef UNALIGNED_SHORT_ASM_OP
#define UNALIGNED_SHORT_ASM_OP		"\t.2byte\t"
#endif
#ifndef UNALIGNED_INT_ASM_OP
#define UNALIGNED_INT_ASM_OP		"\t.4byte\t"
#endif
#ifndef UNALIGNED_DOUBLE_INT_ASM_OP
#define UNALIGNED_DOUBLE_INT_ASM_OP	"\t.8byte\t"
#endif
#endif /* OBJECT_FORMAT_ELF */

#ifndef ASM_BYTE_OP
#define ASM_BYTE_OP			"\t.byte\t"
#endif

#endif  /* ! GCC_DEFAULTS_H */
Commit	Line	Data
eff01bb6	1	/* Definitions of various defaults for tm.h macros.
ea4f1fce	2	Copyright (C) 1992, 1996, 1997, 1998, 1999, 2000, 2001
d8ea8f28	3	Free Software Foundation, Inc.
b33c316c	4	Contributed by Ron Guilmette (rfg@monkeys.com)
c53a8ab6	5
1322177d	6	This file is part of GCC.
c53a8ab6	7
1322177d LB	8	GCC is free software; you can redistribute it and/or modify it under
	9	the terms of the GNU General Public License as published by the Free
	10	Software Foundation; either version 2, or (at your option) any later
	11	version.
c53a8ab6	12
1322177d LB	13	GCC is distributed in the hope that it will be useful, but WITHOUT ANY
	14	WARRANTY; without even the implied warranty of MERCHANTABILITY or
	15	FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	16	for more details.
c53a8ab6 RS	17
c53a8ab6 RS	18	You should have received a copy of the GNU General Public License
1322177d LB	19	along with GCC; see the file COPYING. If not, write to the Free
	20	Software Foundation, 59 Temple Place - Suite 330, Boston, MA
	21	02111-1307, USA. */
c53a8ab6	22
d8ea8f28 ZW	23	#ifndef GCC_DEFAULTS_H
	24	#define GCC_DEFAULTS_H
	25
b2b263e1 NB	26	/* Define default standard character escape sequences. */
	27	#ifndef TARGET_BELL
	28	# define TARGET_BELL 007
	29	# define TARGET_BS 010
	30	# define TARGET_TAB 011
	31	# define TARGET_NEWLINE 012
	32	# define TARGET_VT 013
	33	# define TARGET_FF 014
	34	# define TARGET_CR 015
501990bb	35	# define TARGET_ESC 033
b2b263e1 NB	36	#endif
b2b263e1 NB	37
7b73db04 CH	38	/* Store in OUTPUT a string (made with alloca) containing
	39	an assembler-name for a local static variable or function named NAME.
	40	LABELNO is an integer which is different for each call. */
	41
	42	#ifndef ASM_FORMAT_PRIVATE_NAME
	43	#define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
	44	do { \
	45	int len = strlen (NAME); \
	46	char temp = (char ) alloca (len + 3); \
	47	temp[0] = 'L'; \
	48	strcpy (&temp[1], (NAME)); \
	49	temp[len + 1] = '.'; \
	50	temp[len + 2] = 0; \
	51	(OUTPUT) = (char *) alloca (strlen (NAME) + 11); \
	52	ASM_GENERATE_INTERNAL_LABEL (OUTPUT, temp, LABELNO); \
	53	} while (0)
	54	#endif
	55
	56	#ifndef ASM_STABD_OP
0a3e1f45	57	#define ASM_STABD_OP "\t.stabd\t"
7b73db04 CH	58	#endif
	59
	60	/* This is how to output an element of a case-vector that is absolute.
	61	Some targets don't use this, but we have to define it anyway. */
	62
	63	#ifndef ASM_OUTPUT_ADDR_VEC_ELT
	64	#define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
	65	do { fprintf (FILE, "\t%s\t", ASM_LONG); \
	66	ASM_OUTPUT_INTERNAL_LABEL (FILE, "L", (VALUE)); \
	67	fputc ('\n', FILE); \
	68	} while (0)
	69	#endif
	70
8cd0faaf CM	71	/* Provide default for ASM_OUTPUT_ALTERNATE_LABEL_NAME. */
	72	#ifndef ASM_OUTPUT_ALTERNATE_LABEL_NAME
	73	#define ASM_OUTPUT_ALTERNATE_LABEL_NAME(FILE,INSN) \
a991240f	74	do { ASM_OUTPUT_LABEL(FILE,LABEL_ALTERNATE_NAME (INSN)); } while (0)
8cd0faaf CM	75	#endif
8cd0faaf CM	76
c53a8ab6 RS	77	/* choose a reasonable default for ASM_OUTPUT_ASCII. */
	78
	79	#ifndef ASM_OUTPUT_ASCII
	80	#define ASM_OUTPUT_ASCII(MYFILE, MYSTRING, MYLENGTH) \
	81	do { \
	82	FILE *_hide_asm_out_file = (MYFILE); \
47ee9bcb	83	const unsigned char _hide_p = (const unsigned char ) (MYSTRING); \
c53a8ab6 RS	84	int _hide_thissize = (MYLENGTH); \
	85	{ \
	86	FILE *asm_out_file = _hide_asm_out_file; \
47ee9bcb	87	const unsigned char *p = _hide_p; \
c53a8ab6 RS	88	int thissize = _hide_thissize; \
	89	int i; \
	90	fprintf (asm_out_file, "\t.ascii \""); \
	91	\
	92	for (i = 0; i < thissize; i++) \
	93	{ \
b3694847	94	int c = p[i]; \
c53a8ab6 RS	95	if (c == '\"' \|\| c == '\\') \
c53a8ab6 RS	96	putc ('\\', asm_out_file); \
5f6d3823	97	if (ISPRINT(c)) \
c53a8ab6 RS	98	putc (c, asm_out_file); \
	99	else \
	100	{ \
	101	fprintf (asm_out_file, "\\%o", c); \
	102	/* After an octal-escape, if a digit follows, \
	103	terminate one string constant and start another. \
8aeea6e6	104	The VAX assembler fails to stop reading the escape \
c53a8ab6 RS	105	after three digits, so this is the only way we \
c53a8ab6 RS	106	can get it to parse the data properly. */ \
d07ecc3b	107	if (i < thissize - 1 && ISDIGIT(p[i + 1])) \
c53a8ab6 RS	108	fprintf (asm_out_file, "\"\n\t.ascii \""); \
	109	} \
	110	} \
	111	fprintf (asm_out_file, "\"\n"); \
	112	} \
	113	} \
	114	while (0)
	115	#endif
d0d4af87	116
650f773a JW	117	/* This is how we tell the assembler to equate two values. */
	118	#ifdef SET_ASM_OP
	119	#ifndef ASM_OUTPUT_DEF
	120	#define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \
e8638df0	121	do { fprintf ((FILE), "%s", SET_ASM_OP); \
650f773a JW	122	assemble_name (FILE, LABEL1); \
	123	fprintf (FILE, ","); \
	124	assemble_name (FILE, LABEL2); \
	125	fprintf (FILE, "\n"); \
	126	} while (0)
	127	#endif
	128	#endif
daefd78b	129
81d77cda RK	130	/* This is how to output a reference to a user-level label named NAME. */
	131
	132	#ifndef ASM_OUTPUT_LABELREF
19283265	133	#define ASM_OUTPUT_LABELREF(FILE,NAME) asm_fprintf ((FILE), "%U%s", (NAME))
81d77cda RK	134	#endif
81d77cda RK	135
8215347e JW	136	/* Allow target to print debug info labels specially. This is useful for
	137	VLIW targets, since debug info labels should go into the middle of
	138	instruction bundles instead of breaking them. */
	139
	140	#ifndef ASM_OUTPUT_DEBUG_LABEL
	141	#define ASM_OUTPUT_DEBUG_LABEL(FILE, PREFIX, NUM) \
	142	ASM_OUTPUT_INTERNAL_LABEL (FILE, PREFIX, NUM)
	143	#endif
	144
3aa8ab7b	145	/* This is how we tell the assembler that a symbol is weak. */
20c93f7c RO	146	#ifndef ASM_OUTPUT_WEAK_ALIAS
20c93f7c RO	147	#if defined (ASM_WEAKEN_LABEL) && defined (ASM_OUTPUT_DEF)
3aa8ab7b L	148	#define ASM_OUTPUT_WEAK_ALIAS(STREAM, NAME, VALUE) \
	149	do \
	150	{ \
	151	ASM_WEAKEN_LABEL (STREAM, NAME); \
	152	if (VALUE) \
	153	ASM_OUTPUT_DEF (STREAM, NAME, VALUE); \
	154	} \
	155	while (0)
	156	#endif
20c93f7c	157	#endif
3aa8ab7b	158
daefd78b JM	159	/* This determines whether or not we support weak symbols. */
	160	#ifndef SUPPORTS_WEAK
	161	#ifdef ASM_WEAKEN_LABEL
	162	#define SUPPORTS_WEAK 1
	163	#else
	164	#define SUPPORTS_WEAK 0
	165	#endif
	166	#endif
a6ab3aad	167
1ca894a0 MM	168	/* This determines whether or not we support link-once semantics. */
	169	#ifndef SUPPORTS_ONE_ONLY
	170	#ifdef MAKE_DECL_ONE_ONLY
	171	#define SUPPORTS_ONE_ONLY 1
	172	#else
	173	#define SUPPORTS_ONE_ONLY 0
	174	#endif
	175	#endif
	176
8f08ea1e L	177	/* If the target supports weak symbols, define TARGET_ATTRIBUTE_WEAK to
	178	provide a weak attribute. Else define it to nothing.
	179
d02af173	180	This would normally belong in ansidecl.h, but SUPPORTS_WEAK is
8f08ea1e L	181	not available at that time.
	182
	183	Note, this is only for use by target files which we know are to be
	184	compiled by GCC. */
	185	#ifndef TARGET_ATTRIBUTE_WEAK
	186	# if SUPPORTS_WEAK
	187	# define TARGET_ATTRIBUTE_WEAK __attribute__ ((weak))
	188	# else
	189	# define TARGET_ATTRIBUTE_WEAK
	190	# endif
	191	#endif
	192
ea4f1fce JO	193	/* If the target supports init_priority C++ attribute, give
	194	SUPPORTS_INIT_PRIORITY a nonzero value. */
	195	#ifndef SUPPORTS_INIT_PRIORITY
	196	#define SUPPORTS_INIT_PRIORITY 1
	197	#endif /* SUPPORTS_INIT_PRIORITY */
	198
5897739e JO	199	/* If duplicate library search directories can be removed from a
	200	linker command without changing the linker's semantics, give this
	201	symbol a nonzero. */
	202	#ifndef LINK_ELIMINATE_DUPLICATE_LDIRECTORIES
	203	#define LINK_ELIMINATE_DUPLICATE_LDIRECTORIES 0
	204	#endif /* LINK_ELIMINATE_DUPLICATE_LDIRECTORIES */
	205
a6ab3aad JM	206	/* If we have a definition of INCOMING_RETURN_ADDR_RTX, assume that
a6ab3aad JM	207	the rest of the DWARF 2 frame unwind support is also provided. */
0021b564 JM	208	#if !defined (DWARF2_UNWIND_INFO) && defined (INCOMING_RETURN_ADDR_RTX)
0021b564 JM	209	#define DWARF2_UNWIND_INFO 1
a6ab3aad	210	#endif
b366352b	211
2cc07db4 RH	212	/* If we have named sections, and we're using crtstuff to run ctors,
2cc07db4 RH	213	use them for registering eh frame information. */
02c9b1ca	214	#if defined (TARGET_ASM_NAMED_SECTION) && !defined(EH_FRAME_IN_DATA_SECTION)
7c262518 RH	215	#ifndef EH_FRAME_SECTION_NAME
	216	#define EH_FRAME_SECTION_NAME ".eh_frame"
	217	#endif
31cf0144 JM	218	#endif
31cf0144 JM	219
6351543d AG	220	/* If we have named section and we support weak symbols, then use the
	221	.jcr section for recording java classes which need to be registered
	222	at program start-up time. */
	223	#if defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK
	224	#ifndef JCR_SECTION_NAME
	225	#define JCR_SECTION_NAME ".jcr"
	226	#endif
	227	#endif
	228
eff01bb6 RH	229	/* If we have no definition for UNIQUE_SECTION, but do have the
	230	ability to generate arbitrary sections, construct something
	231	reasonable. */
eff01bb6 RH	232	#ifndef UNIQUE_SECTION
	233	#define UNIQUE_SECTION(DECL,RELOC) \
	234	do { \
	235	int len; \
	236	const char *name; \
	237	char *string; \
	238	\
	239	name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL)); \
	240	/* Strip off any encoding in name. */ \
	241	STRIP_NAME_ENCODING (name, name); \
	242	\
	243	len = strlen (name) + 1; \
	244	string = alloca (len + 1); \
	245	sprintf (string, ".%s", name); \
	246	\
	247	DECL_SECTION_NAME (DECL) = build_string (len, string); \
	248	} while (0)
	249	#endif
eff01bb6	250
b366352b MM	251	/* By default, we generate a label at the beginning and end of the
	252	text section, and compute the size of the text section by
	253	subtracting the two. However, on some platforms that doesn't
	254	work, and we use the section itself, rather than a label at the
	255	beginning of it, to indicate the start of the section. On such
	256	platforms, define this to zero. */
	257	#ifndef DWARF2_GENERATE_TEXT_SECTION_LABEL
	258	#define DWARF2_GENERATE_TEXT_SECTION_LABEL 1
	259	#endif
246833ac RH	260
	261	/* Supply a default definition for PROMOTE_PROTOTYPES. */
	262	#ifndef PROMOTE_PROTOTYPES
	263	#define PROMOTE_PROTOTYPES 0
	264	#endif
c478efd1 GDR	265
	266	/* Number of hardware registers that go into the DWARF-2 unwind info.
	267	If not defined, equals FIRST_PSEUDO_REGISTER */
	268
	269	#ifndef DWARF_FRAME_REGISTERS
	270	#define DWARF_FRAME_REGISTERS FIRST_PSEUDO_REGISTER
	271	#endif
d8ea8f28 ZW	272
	273	/* Default sizes for base C types. If the sizes are different for
	274	your target, you should override these values by defining the
	275	appropriate symbols in your tm.h file. */
	276
	277	#ifndef CHAR_TYPE_SIZE
	278	#define CHAR_TYPE_SIZE BITS_PER_UNIT
	279	#endif
	280
	281	#ifndef SHORT_TYPE_SIZE
	282	#define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2))
	283	#endif
	284
	285	#ifndef INT_TYPE_SIZE
	286	#define INT_TYPE_SIZE BITS_PER_WORD
	287	#endif
	288
	289	#ifndef LONG_TYPE_SIZE
	290	#define LONG_TYPE_SIZE BITS_PER_WORD
	291	#endif
	292
	293	#ifndef LONG_LONG_TYPE_SIZE
	294	#define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2)
	295	#endif
	296
	297	#ifndef WCHAR_TYPE_SIZE
	298	#define WCHAR_TYPE_SIZE INT_TYPE_SIZE
	299	#endif
	300
	301	#ifndef WCHAR_UNSIGNED
	302	#define WCHAR_UNSIGNED 0
	303	#endif
	304
	305	#ifndef FLOAT_TYPE_SIZE
	306	#define FLOAT_TYPE_SIZE BITS_PER_WORD
	307	#endif
	308
	309	#ifndef DOUBLE_TYPE_SIZE
	310	#define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
	311	#endif
	312
	313	#ifndef LONG_DOUBLE_TYPE_SIZE
	314	#define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
	315	#endif
	316
2df88e9f JO	317	#ifndef BUILD_VA_LIST_TYPE
	318	#define BUILD_VA_LIST_TYPE(X) ((X) = ptr_type_node)
	319	#endif
	320
848e0190 JH	321	#ifndef PIC_OFFSET_TABLE_REGNUM
	322	#define PIC_OFFSET_TABLE_REGNUM INVALID_REGNUM
	323	#endif
	324
b2aec5c0 JH	325	/* Type used by GCOV counters. Use 64bit data type if target supports
	326	it. */
	327	#if LONG_TYPE_SIZE >= 64
	328	#define GCOV_TYPE_SIZE LONG_TYPE_SIZE
	329	#else
	330	#define GCOV_TYPE_SIZE LONG_LONG_TYPE_SIZE
	331	#endif
	332
	333
a9374841 MM	334	/* By default, the preprocessor should be invoked the same way in C++
	335	as in C. */
	336	#ifndef CPLUSPLUS_CPP_SPEC
	337	#ifdef CPP_SPEC
	338	#define CPLUSPLUS_CPP_SPEC CPP_SPEC
	339	#endif
	340	#endif
	341
bf501a65 RH	342	#ifndef ACCUMULATE_OUTGOING_ARGS
	343	#define ACCUMULATE_OUTGOING_ARGS 0
	344	#endif
	345
	346	/* Supply a default definition for PUSH_ARGS. */
	347	#ifndef PUSH_ARGS
	348	#ifdef PUSH_ROUNDING
	349	#define PUSH_ARGS !ACCUMULATE_OUTGOING_ARGS
	350	#else
	351	#define PUSH_ARGS 0
	352	#endif
	353	#endif
	354
31cdd499 ZW	355	/* If PREFERRED_STACK_BOUNDARY is not defined, set it to STACK_BOUNDARY.
	356	STACK_BOUNDARY is required. */
	357	#ifndef PREFERRED_STACK_BOUNDARY
	358	#define PREFERRED_STACK_BOUNDARY STACK_BOUNDARY
	359	#endif
	360
67231816 RH	361	/* By default, the C++ compiler will use function addresses in the
	362	vtable entries. Setting this non-zero tells the compiler to use
	363	function descriptors instead. The value of this macro says how
	364	many words wide the descriptor is (normally 2). It is assumed
	365	that the address of a function descriptor may be treated as a
	366	pointer to a function. */
	367	#ifndef TARGET_VTABLE_USES_DESCRIPTORS
	368	#define TARGET_VTABLE_USES_DESCRIPTORS 0
	369	#endif
	370
2a1ee410 RH	371	/* Select a format to encode pointers in exception handling data. We
	372	prefer those that result in fewer dynamic relocations. Assume no
	373	special support here and encode direct references. */
	374	#ifndef ASM_PREFERRED_EH_DATA_FORMAT
	375	#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) DW_EH_PE_absptr
	376	#endif
	377
f3c55c97 AO	378	/* By default, the C++ compiler will use the lowest bit of the pointer
	379	to function to indicate a pointer-to-member-function points to a
	380	virtual member function. However, if FUNCTION_BOUNDARY indicates
	381	function addresses aren't always even, the lowest bit of the delta
	382	field will be used. */
	383	#ifndef TARGET_PTRMEMFUNC_VBIT_LOCATION
	384	#define TARGET_PTRMEMFUNC_VBIT_LOCATION \
	385	(FUNCTION_BOUNDARY >= 2 * BITS_PER_UNIT \
	386	? ptrmemfunc_vbit_in_pfn : ptrmemfunc_vbit_in_delta)
	387	#endif
	388
4da5f005 MM	389	/* True if it is possible to profile code that does not have a frame
	390	pointer. */
	391
	392	#ifndef TARGET_ALLOWS_PROFILING_WITHOUT_FRAME_POINTER
	393	#define TARGET_ALLOWS_PROFILING_WITHOUT_FRAME_POINTER true
	394	#endif
	395
c8af3574 RH	396	/* GAS and SYSV4 assemblers accept these. */
	397	#ifdef OBJECT_FORMAT_ELF
	398	#ifndef UNALIGNED_SHORT_ASM_OP
	399	#define UNALIGNED_SHORT_ASM_OP "\t.2byte\t"
	400	#endif
	401	#ifndef UNALIGNED_INT_ASM_OP
	402	#define UNALIGNED_INT_ASM_OP "\t.4byte\t"
	403	#endif
	404	#ifndef UNALIGNED_DOUBLE_INT_ASM_OP
	405	#define UNALIGNED_DOUBLE_INT_ASM_OP "\t.8byte\t"
	406	#endif
	407	#endif /* OBJECT_FORMAT_ELF */
	408
	409	#ifndef ASM_BYTE_OP
	410	#define ASM_BYTE_OP "\t.byte\t"
	411	#endif
	412
88657302	413	#endif /* ! GCC_DEFAULTS_H */