[thirdparty/gcc.git] / gcc / config / arm / aout.h

/* Definitions of target machine for GNU compiler, for ARM with a.out
   Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000
   Free Software Foundation, Inc.
   Contributed by Richard Earnshaw (rearnsha@armltd.co.uk).
   
This file is part of GNU CC.

GNU CC 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.

GNU CC 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 GNU CC; see the file COPYING.  If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

#ifndef ARM_OS_NAME
#define ARM_OS_NAME "(generic)"
#endif

/* The text to go at the start of the assembler file */
#ifndef ASM_FILE_START
#define ASM_FILE_START(STREAM)		    \
{					    \
  asm_fprintf (STREAM,"%Rrfp\t.req\t%Rr9\n"); \
  asm_fprintf (STREAM,"%Rsl\t.req\t%Rr10\n"); \
  asm_fprintf (STREAM,"%Rfp\t.req\t%Rr11\n"); \
  asm_fprintf (STREAM,"%Rip\t.req\t%Rr12\n"); \
  asm_fprintf (STREAM,"%Rsp\t.req\t%Rr13\n"); \
  asm_fprintf (STREAM,"%Rlr\t.req\t%Rr14\n"); \
  asm_fprintf (STREAM,"%Rpc\t.req\t%Rr15\n"); \
}
#endif

#ifndef ASM_APP_ON
#define ASM_APP_ON  		""
#endif
#ifndef ASM_APP_OFF
#define ASM_APP_OFF  		""
#endif

/* Switch to the text or data segment.  */
#define TEXT_SECTION_ASM_OP  	"\t.text"
#define DATA_SECTION_ASM_OP  	"\t.data"
#define BSS_SECTION_ASM_OP   	"\t.bss"

/* Note: If USER_LABEL_PREFIX or LOCAL_LABEL_PREFIX are changed,
   make sure that this change is reflected in the function
   coff_arm_is_local_label_name() in bfd/coff-arm.c  */
#ifndef REGISTER_PREFIX
#define REGISTER_PREFIX 	""
#endif

#ifndef USER_LABEL_PREFIX
#define USER_LABEL_PREFIX 	"_"
#endif

#ifndef LOCAL_LABEL_PREFIX
#define LOCAL_LABEL_PREFIX 	""
#endif


/* The assembler's names for the registers.  */
#ifndef REGISTER_NAMES
#define REGISTER_NAMES  			   \
{				                   \
  "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",  \
  "r8", "r9", "sl", "fp", "ip", "sp", "lr", "pc",  \
  "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",  \
  "cc", "sfp", "afp"		   		   \
}
#endif

#ifndef ADDITIONAL_REGISTER_NAMES
#define ADDITIONAL_REGISTER_NAMES		\
{						\
  {"a1", 0},					\
  {"a2", 1},					\
  {"a3", 2},					\
  {"a4", 3},					\
  {"v1", 4},					\
  {"v2", 5},					\
  {"v3", 6},					\
  {"v4", 7},					\
  {"v5", 8},					\
  {"v6", 9},					\
  {"rfp", 9}, /* Gcc used to call it this */	\
  {"sb", 9},					\
  {"v7", 10},					\
  {"r10", 10},	/* sl */			\
  {"r11", 11},	/* fp */			\
  {"r12", 12},	/* ip */			\
  {"r13", 13},	/* sp */			\
  {"r14", 14},	/* lr */			\
  {"r15", 15}	/* pc */			\
}
#endif

/* Arm Assembler barfs on dollars */
#define DOLLARS_IN_IDENTIFIERS 0

#ifndef NO_DOLLAR_IN_LABEL
#define NO_DOLLAR_IN_LABEL 1
#endif

/* Generate DBX debugging information.  riscix.h will undefine this because
   the native assembler does not support stabs. */
#ifndef DBX_DEBUGGING_INFO
#define DBX_DEBUGGING_INFO  1
#endif

/* Acorn dbx moans about continuation chars, so don't use any.  */
#ifndef DBX_CONTIN_LENGTH
#define DBX_CONTIN_LENGTH  0
#endif

/* Output a source filename for the debugger. RISCiX dbx insists that the
   ``desc'' field is set to compiler version number >= 315 (sic).  */
#define DBX_OUTPUT_MAIN_SOURCE_FILENAME(STREAM, NAME)			\
  do									\
    {									\
      fprintf (STREAM, ".stabs ");					\
      output_quoted_string (STREAM, NAME);				\
      fprintf (STREAM, ",%d,0,315,%s\n", N_SO, &ltext_label_name[1]);	\
      text_section ();							\
      ASM_OUTPUT_INTERNAL_LABEL (STREAM, "Ltext", 0);			\
    }									\
  while (0)
  
/* Output a function label definition.  */
#ifndef ASM_DECLARE_FUNCTION_NAME
#define ASM_DECLARE_FUNCTION_NAME(STREAM, NAME, DECL)	\
  do							\
    {							\
      ARM_DECLARE_FUNCTION_NAME (STREAM, NAME, DECL);   \
      ASM_OUTPUT_LABEL (STREAM, NAME);			\
    }							\
  while (0)
#endif

#ifndef ASM_OUTPUT_LABEL
#define ASM_OUTPUT_LABEL(STREAM, NAME)		\
  do						\
    {						\
      assemble_name (STREAM,NAME);		\
      fputs (":\n", STREAM);			\
    }						\
  while (0)
#endif
     
/* Output a globalising directive for a label.  */
#ifndef ASM_GLOBALIZE_LABEL
#define ASM_GLOBALIZE_LABEL(STREAM, NAME)	\
  do						\
    {						\
      fprintf (STREAM, "\t.global\t");		\
      assemble_name (STREAM, NAME);		\
      fputc ('\n',STREAM);			\
    }						\
  while (0)
#endif

/* Make an internal label into a string.  */
#ifndef ASM_GENERATE_INTERNAL_LABEL
#define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM)  \
  sprintf (STRING, "*%s%s%u", LOCAL_LABEL_PREFIX, PREFIX, (unsigned int)(NUM))
#endif
     
/* Construct a private name.  */
#define ASM_FORMAT_PRIVATE_NAME(OUTVAR, NAME, NUMBER)  \
  ((OUTVAR) = (char *) alloca (strlen (NAME) + 10),  \
   sprintf (OUTVAR, "%s.%d", NAME, NUMBER))

/* Output an element of a dispatch table.  */
#define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE)  \
  asm_fprintf (STREAM, "\t.word\t%LL%d\n", VALUE)

#define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL)  \
  asm_fprintf (STREAM, "\tb\t%LL%d\n", VALUE)

#undef  ASM_OUTPUT_ASCII
#define ASM_OUTPUT_ASCII(STREAM, PTR, LEN)  \
  output_ascii_pseudo_op (STREAM, (const unsigned char *)(PTR), LEN)

/* Output a gap.  In fact we fill it with nulls.  */
#undef  ASM_OUTPUT_SKIP
#define ASM_OUTPUT_SKIP(STREAM, NBYTES) 	\
  fprintf (STREAM, "\t.space\t%d\n", NBYTES)

/* Align output to a power of two.  Horrible /bin/as.  */
#ifndef ASM_OUTPUT_ALIGN  
#define ASM_OUTPUT_ALIGN(STREAM, POWER)			\
  do							\
    {							\
      register int amount = 1 << (POWER);		\
							\
      if (amount == 2)					\
	fprintf (STREAM, "\t.even\n");			\
      else if (amount != 1)				\
	fprintf (STREAM, "\t.align\t%d\n", amount - 4);	\
    }							\
  while (0)
#endif

/* Output a common block */
#ifndef ASM_OUTPUT_COMMON
#define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED)	\
  do							\
    {							\
      fprintf (STREAM, "\t.comm\t");			\
      assemble_name (STREAM, NAME);			\
      asm_fprintf (STREAM, ", %d\t%@ %d\n", 		\
	           ROUNDED, SIZE);			\
    }							\
  while (0)
#endif
     
/* Output a local common block.  /bin/as can't do this, so hack a
   `.space' into the bss segment.  Note that this is *bad* practice,
   which is guaranteed NOT to work since it doesn't define STATIC
   COMMON space but merely STATIC BSS space.  */
#ifndef ASM_OUTPUT_ALIGNED_LOCAL
#define ASM_OUTPUT_ALIGNED_LOCAL(STREAM, NAME, SIZE, ALIGN)		\
  do									\
    {									\
      bss_section ();							\
      ASM_OUTPUT_ALIGN (STREAM, floor_log2 (ALIGN / BITS_PER_UNIT));	\
      ASM_OUTPUT_LABEL (STREAM, NAME);					\
      fprintf (STREAM, "\t.space\t%d\n", SIZE);				\
    }									\
  while (0)
#endif
     
/* Output a zero-initialized block.  */
#ifndef ASM_OUTPUT_ALIGNED_BSS
#define ASM_OUTPUT_ALIGNED_BSS(STREAM, DECL, NAME, SIZE, ALIGN) \
  asm_output_aligned_bss (STREAM, DECL, NAME, SIZE, ALIGN)
#endif
     
/* Output a source line for the debugger.  */
/* #define ASM_OUTPUT_SOURCE_LINE(STREAM,LINE) */

/* Output a #ident directive.  */
#ifndef ASM_OUTPUT_IDENT
#define ASM_OUTPUT_IDENT(STREAM,STRING)  \
  asm_fprintf (STREAM, "%@ - - - ident %s\n", STRING)
#endif
     
#ifndef ASM_COMMENT_START
#define ASM_COMMENT_START 	"@"
#endif

/* This works for GAS and some other assemblers.  */
#define SET_ASM_OP		"\t.set\t"
Commit	Line	Data
9fb7806b	1	/* Definitions of target machine for GNU compiler, for ARM with a.out
2398fb2a RB	2	Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000
2398fb2a RB	3	Free Software Foundation, Inc.
ae3e1bb4	4	Contributed by Richard Earnshaw (rearnsha@armltd.co.uk).
9fb7806b RE	5
	6	This file is part of GNU CC.
	7
	8	GNU CC is free software; you can redistribute it and/or modify
	9	it under the terms of the GNU General Public License as published by
	10	the Free Software Foundation; either version 2, or (at your option)
	11	any later version.
	12
	13	GNU CC is distributed in the hope that it will be useful,
	14	but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	GNU General Public License for more details.
	17
	18	You should have received a copy of the GNU General Public License
	19	along with GNU CC; see the file COPYING. If not, write to
	20	the Free Software Foundation, 59 Temple Place - Suite 330,
	21	Boston, MA 02111-1307, USA. */
	22
	23	#ifndef ARM_OS_NAME
	24	#define ARM_OS_NAME "(generic)"
	25	#endif
	26
	27	/* The text to go at the start of the assembler file */
b355a481	28	#ifndef ASM_FILE_START
d5b7b3ae RE	29	#define ASM_FILE_START(STREAM) \
	30	{ \
	31	asm_fprintf (STREAM,"%Rrfp\t.req\t%Rr9\n"); \
	32	asm_fprintf (STREAM,"%Rsl\t.req\t%Rr10\n"); \
	33	asm_fprintf (STREAM,"%Rfp\t.req\t%Rr11\n"); \
	34	asm_fprintf (STREAM,"%Rip\t.req\t%Rr12\n"); \
	35	asm_fprintf (STREAM,"%Rsp\t.req\t%Rr13\n"); \
	36	asm_fprintf (STREAM,"%Rlr\t.req\t%Rr14\n"); \
	37	asm_fprintf (STREAM,"%Rpc\t.req\t%Rr15\n"); \
9fb7806b	38	}
b355a481	39	#endif
9fb7806b	40
d5b7b3ae RE	41	#ifndef ASM_APP_ON
	42	#define ASM_APP_ON ""
	43	#endif
	44	#ifndef ASM_APP_OFF
	45	#define ASM_APP_OFF ""
	46	#endif
9fb7806b RE	47
9fb7806b RE	48	/* Switch to the text or data segment. */
93de6f51 HPN	49	#define TEXT_SECTION_ASM_OP "\t.text"
	50	#define DATA_SECTION_ASM_OP "\t.data"
	51	#define BSS_SECTION_ASM_OP "\t.bss"
b355a481 NC	52
	53	/* Note: If USER_LABEL_PREFIX or LOCAL_LABEL_PREFIX are changed,
	54	make sure that this change is reflected in the function
	55	coff_arm_is_local_label_name() in bfd/coff-arm.c */
	56	#ifndef REGISTER_PREFIX
	57	#define REGISTER_PREFIX ""
	58	#endif
	59
	60	#ifndef USER_LABEL_PREFIX
	61	#define USER_LABEL_PREFIX "_"
	62	#endif
	63
	64	#ifndef LOCAL_LABEL_PREFIX
	65	#define LOCAL_LABEL_PREFIX ""
	66	#endif
9fb7806b	67
9fb7806b RE	68
	69	/* The assembler's names for the registers. */
	70	#ifndef REGISTER_NAMES
b355a481	71	#define REGISTER_NAMES \
9fb7806b RE	72	{ \
	73	"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
	74	"r8", "r9", "sl", "fp", "ip", "sp", "lr", "pc", \
	75	"f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \
d5b7b3ae	76	"cc", "sfp", "afp" \
9fb7806b RE	77	}
	78	#endif
	79
	80	#ifndef ADDITIONAL_REGISTER_NAMES
	81	#define ADDITIONAL_REGISTER_NAMES \
	82	{ \
	83	{"a1", 0}, \
	84	{"a2", 1}, \
	85	{"a3", 2}, \
	86	{"a4", 3}, \
	87	{"v1", 4}, \
	88	{"v2", 5}, \
	89	{"v3", 6}, \
	90	{"v4", 7}, \
	91	{"v5", 8}, \
	92	{"v6", 9}, \
	93	{"rfp", 9}, /* Gcc used to call it this */ \
	94	{"sb", 9}, \
	95	{"v7", 10}, \
	96	{"r10", 10}, /* sl */ \
	97	{"r11", 11}, /* fp */ \
	98	{"r12", 12}, /* ip */ \
	99	{"r13", 13}, /* sp */ \
	100	{"r14", 14}, /* lr */ \
	101	{"r15", 15} /* pc */ \
	102	}
	103	#endif
	104
	105	/* Arm Assembler barfs on dollars */
	106	#define DOLLARS_IN_IDENTIFIERS 0
	107
be393ecf	108	#ifndef NO_DOLLAR_IN_LABEL
6cfc7210	109	#define NO_DOLLAR_IN_LABEL 1
be393ecf	110	#endif
9fb7806b	111
9fb7806b RE	112	/* Generate DBX debugging information. riscix.h will undefine this because
9fb7806b RE	113	the native assembler does not support stabs. */
863ebdad	114	#ifndef DBX_DEBUGGING_INFO
9fb7806b	115	#define DBX_DEBUGGING_INFO 1
863ebdad	116	#endif
9fb7806b RE	117
	118	/* Acorn dbx moans about continuation chars, so don't use any. */
	119	#ifndef DBX_CONTIN_LENGTH
	120	#define DBX_CONTIN_LENGTH 0
	121	#endif
	122
	123	/* Output a source filename for the debugger. RISCiX dbx insists that the
	124	``desc'' field is set to compiler version number >= 315 (sic). */
6cfc7210 NC	125	#define DBX_OUTPUT_MAIN_SOURCE_FILENAME(STREAM, NAME) \
	126	do \
	127	{ \
	128	fprintf (STREAM, ".stabs "); \
	129	output_quoted_string (STREAM, NAME); \
	130	fprintf (STREAM, ",%d,0,315,%s\n", N_SO, &ltext_label_name[1]); \
	131	text_section (); \
	132	ASM_OUTPUT_INTERNAL_LABEL (STREAM, "Ltext", 0); \
	133	} \
	134	while (0)
9fb7806b RE	135
9fb7806b RE	136	/* Output a function label definition. */
b355a481	137	#ifndef ASM_DECLARE_FUNCTION_NAME
6cfc7210 NC	138	#define ASM_DECLARE_FUNCTION_NAME(STREAM, NAME, DECL) \
	139	do \
	140	{ \
	141	ARM_DECLARE_FUNCTION_NAME (STREAM, NAME, DECL); \
	142	ASM_OUTPUT_LABEL (STREAM, NAME); \
	143	} \
	144	while (0)
b355a481	145	#endif
9fb7806b	146
b355a481	147	#ifndef ASM_OUTPUT_LABEL
6cfc7210 NC	148	#define ASM_OUTPUT_LABEL(STREAM, NAME) \
	149	do \
	150	{ \
	151	assemble_name (STREAM,NAME); \
	152	fputs (":\n", STREAM); \
	153	} \
	154	while (0)
b355a481 NC	155	#endif
b355a481 NC	156
9fb7806b	157	/* Output a globalising directive for a label. */
b355a481	158	#ifndef ASM_GLOBALIZE_LABEL
6cfc7210 NC	159	#define ASM_GLOBALIZE_LABEL(STREAM, NAME) \
	160	do \
	161	{ \
	162	fprintf (STREAM, "\t.global\t"); \
	163	assemble_name (STREAM, NAME); \
	164	fputc ('\n',STREAM); \
	165	} \
	166	while (0)
b355a481	167	#endif
9fb7806b	168
9fb7806b	169	/* Make an internal label into a string. */
b355a481	170	#ifndef ASM_GENERATE_INTERNAL_LABEL
9fb7806b	171	#define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM) \
aec3cfba	172	sprintf (STRING, "*%s%s%u", LOCAL_LABEL_PREFIX, PREFIX, (unsigned int)(NUM))
b355a481 NC	173	#endif
b355a481 NC	174
9fb7806b	175	/* Construct a private name. */
6cfc7210	176	#define ASM_FORMAT_PRIVATE_NAME(OUTVAR, NAME, NUMBER) \
9fb7806b	177	((OUTVAR) = (char *) alloca (strlen (NAME) + 10), \
6cfc7210	178	sprintf (OUTVAR, "%s.%d", NAME, NUMBER))
9fb7806b RE	179
9fb7806b RE	180	/* Output an element of a dispatch table. */
6cfc7210 NC	181	#define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \
6cfc7210 NC	182	asm_fprintf (STREAM, "\t.word\t%LL%d\n", VALUE)
9fb7806b	183
6cfc7210 NC	184	#define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL) \
6cfc7210 NC	185	asm_fprintf (STREAM, "\tb\t%LL%d\n", VALUE)
9fb7806b	186
be393ecf	187	#undef ASM_OUTPUT_ASCII
9fb7806b	188	#define ASM_OUTPUT_ASCII(STREAM, PTR, LEN) \
3cce094d	189	output_ascii_pseudo_op (STREAM, (const unsigned char *)(PTR), LEN)
9fb7806b RE	190
9fb7806b RE	191	/* Output a gap. In fact we fill it with nulls. */
be393ecf	192	#undef ASM_OUTPUT_SKIP
b355a481	193	#define ASM_OUTPUT_SKIP(STREAM, NBYTES) \
6cfc7210	194	fprintf (STREAM, "\t.space\t%d\n", NBYTES)
9fb7806b RE	195
9fb7806b RE	196	/* Align output to a power of two. Horrible /bin/as. */
00275db1	197	#ifndef ASM_OUTPUT_ALIGN
6cfc7210 NC	198	#define ASM_OUTPUT_ALIGN(STREAM, POWER) \
	199	do \
	200	{ \
	201	register int amount = 1 << (POWER); \
	202	\
	203	if (amount == 2) \
	204	fprintf (STREAM, "\t.even\n"); \
	205	else if (amount != 1) \
	206	fprintf (STREAM, "\t.align\t%d\n", amount - 4); \
	207	} \
00275db1 PB	208	while (0)
00275db1 PB	209	#endif
9fb7806b RE	210
9fb7806b RE	211	/* Output a common block */
b355a481	212	#ifndef ASM_OUTPUT_COMMON
6cfc7210 NC	213	#define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED) \
	214	do \
	215	{ \
	216	fprintf (STREAM, "\t.comm\t"); \
	217	assemble_name (STREAM, NAME); \
d5b7b3ae RE	218	asm_fprintf (STREAM, ", %d\t%@ %d\n", \
d5b7b3ae RE	219	ROUNDED, SIZE); \
6cfc7210 NC	220	} \
6cfc7210 NC	221	while (0)
b355a481 NC	222	#endif
b355a481 NC	223
33f7f353	224	/* Output a local common block. /bin/as can't do this, so hack a
b355a481 NC	225	`.space' into the bss segment. Note that this is bad practice,
	226	which is guaranteed NOT to work since it doesn't define STATIC
	227	COMMON space but merely STATIC BSS space. */
	228	#ifndef ASM_OUTPUT_ALIGNED_LOCAL
6cfc7210 NC	229	#define ASM_OUTPUT_ALIGNED_LOCAL(STREAM, NAME, SIZE, ALIGN) \
	230	do \
	231	{ \
	232	bss_section (); \
	233	ASM_OUTPUT_ALIGN (STREAM, floor_log2 (ALIGN / BITS_PER_UNIT)); \
	234	ASM_OUTPUT_LABEL (STREAM, NAME); \
	235	fprintf (STREAM, "\t.space\t%d\n", SIZE); \
	236	} \
	237	while (0)
b355a481 NC	238	#endif
b355a481 NC	239
c9d9bc85	240	/* Output a zero-initialized block. */
b355a481	241	#ifndef ASM_OUTPUT_ALIGNED_BSS
6cfc7210	242	#define ASM_OUTPUT_ALIGNED_BSS(STREAM, DECL, NAME, SIZE, ALIGN) \
b355a481 NC	243	asm_output_aligned_bss (STREAM, DECL, NAME, SIZE, ALIGN)
	244	#endif
	245
9fb7806b RE	246	/* Output a source line for the debugger. */
	247	/* #define ASM_OUTPUT_SOURCE_LINE(STREAM,LINE) */
	248
	249	/* Output a #ident directive. */
b355a481	250	#ifndef ASM_OUTPUT_IDENT
9fb7806b	251	#define ASM_OUTPUT_IDENT(STREAM,STRING) \
d5b7b3ae	252	asm_fprintf (STREAM, "%@ - - - ident %s\n", STRING)
b355a481 NC	253	#endif
b355a481 NC	254
9fb7806b	255	#ifndef ASM_COMMENT_START
b355a481	256	#define ASM_COMMENT_START "@"
9fb7806b RE	257	#endif
9fb7806b RE	258
ce29b9d0	259	/* This works for GAS and some other assemblers. */
93de6f51	260	#define SET_ASM_OP "\t.set\t"