[deliverable/binutils-gdb.git] / gas / config / tc-m68k.h

/* This file is tc-m68k.h
   Copyright 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
   1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
   Free Software Foundation, Inc.

   This file is part of GAS, the GNU Assembler.

   GAS 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.

   GAS 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 GAS; see the file COPYING.  If not, write to the Free
   Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
   02110-1301, USA.  */

#define TC_M68K 1

struct fix;

#define TARGET_BYTES_BIG_ENDIAN 1

#ifdef OBJ_AOUT
#ifdef TE_SUN3
#define TARGET_FORMAT "a.out-sunos-big"
#endif
#ifdef TE_NetBSD
#define TARGET_FORMAT "a.out-m68k-netbsd"
#endif
#ifdef TE_LINUX
#define TARGET_FORMAT "a.out-m68k-linux"
#endif
#ifndef TARGET_FORMAT
#define TARGET_FORMAT "a.out-zero-big"
#endif
#endif

#ifdef OBJ_ELF
#define TARGET_FORMAT "elf32-m68k"
#endif

#ifdef TE_APOLLO
#define COFF_MAGIC		APOLLOM68KMAGIC
#define COFF_AOUTHDR_MAGIC	APOLLO_COFF_VERSION_NUMBER
#undef OBJ_COFF_OMIT_OPTIONAL_HEADER
#endif

#ifdef TE_AUX
#define TARGET_FORMAT		"coff-m68k-aux"
#endif
#ifdef TE_DELTA
#define TARGET_FORMAT		"coff-m68k-sysv"
#endif

#ifndef COFF_MAGIC
#define COFF_MAGIC MC68MAGIC
#endif
#define BFD_ARCH bfd_arch_m68k /* for non-BFD_ASSEMBLER */
#define TARGET_ARCH bfd_arch_m68k /* BFD_ASSEMBLER */
#define COFF_FLAGS F_AR32W
#define TC_COUNT_RELOC(x) ((x)->fx_addsy||(x)->fx_subsy)

#define TC_COFF_FIX2RTYPE(FIX) tc_coff_fix2rtype(FIX)
#define TC_COFF_SIZEMACHDEP(frag) tc_coff_sizemachdep(frag)
extern int tc_coff_sizemachdep (struct frag *);
#ifdef TE_SUN3
/* This variable contains the value to write out at the beginning of
   the a.out file.  The 2<<16 means that this is a 68020 file instead
   of an old-style 68000 file */

#define DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE (2<<16|OMAGIC);	/* Magic byte for file header */
#endif /* TE_SUN3 */

#ifndef AOUT_MACHTYPE
#define AOUT_MACHTYPE m68k_aout_machtype
extern int m68k_aout_machtype;
#endif

#define tc_comment_chars m68k_comment_chars
extern const char *m68k_comment_chars;

#define tc_crawl_symbol_chain(a)	{;}	/* not used */
#define tc_headers_hook(a)		{;}	/* not used */
#define tc_aout_pre_write_hook(x)	{;}	/* not used */

#define LISTING_WORD_SIZE 2	/* A word is 2 bytes */
#define LISTING_LHS_WIDTH 2	/* One word on the first line */
#define LISTING_LHS_WIDTH_SECOND 2	/* One word on the second line */
#define LISTING_LHS_CONT_LINES 4/* And 4 lines max */
#define LISTING_HEADER "68K GAS "

#ifndef REGISTER_PREFIX
#define REGISTER_PREFIX '%'
#endif

#if !defined (REGISTER_PREFIX_OPTIONAL)
#if defined (M68KCOFF) || defined (OBJ_ELF)
#ifndef BFD_ASSEMBLER
#define LOCAL_LABEL(name) (name[0] == '.' \
			   && (name[1] == 'L' || name[1] == '.'))
#endif /* ! BFD_ASSEMBLER */
#define REGISTER_PREFIX_OPTIONAL 0
#else /* ! (COFF || ELF) */
#define REGISTER_PREFIX_OPTIONAL 1
#endif /* ! (COFF || ELF) */
#endif /* not def REGISTER_PREFIX and not def OPTIONAL_REGISTER_PREFIX */

#ifdef TE_DELTA
/* On the Delta, `%' can occur within a label name, but not as the
   initial character.  */
#define LEX_PCT LEX_NAME
/* On the Delta, `~' can start a label name, but is converted to '.'.  */
#define LEX_TILDE LEX_BEGIN_NAME
#define tc_canonicalize_symbol_name(s) ((*(s) == '~' ? *(s) = '.' : '.'), s)
/* On the Delta, dots are not required before pseudo-ops.  */
#define NO_PSEUDO_DOT 1
#ifndef BFD_ASSEMBLER
#undef LOCAL_LABEL
#define LOCAL_LABEL(name) \
  (name[0] == '.' || (name[0] == 'L' && name[1] == '%'))
#endif
#endif

extern void m68k_mri_mode_change (int);
#define MRI_MODE_CHANGE(i) m68k_mri_mode_change (i)

extern int m68k_conditional_pseudoop (pseudo_typeS *);
#define tc_conditional_pseudoop(pop) m68k_conditional_pseudoop (pop)

extern void m68k_frob_label (symbolS *);
#define tc_frob_label(sym) m68k_frob_label (sym)

extern void m68k_flush_pending_output (void);
#define md_flush_pending_output() m68k_flush_pending_output ()

extern void m68k_frob_symbol (symbolS *);

#ifdef BFD_ASSEMBLER

#define tc_frob_symbol(sym,punt)				\
do								\
  {								\
    if (S_GET_SEGMENT (sym) == reg_section)			\
      punt = 1;							\
    m68k_frob_symbol (sym);					\
  }								\
while (0)

#define NO_RELOC BFD_RELOC_NONE
#define RELAX_RELOC_ABS8  BFD_RELOC_8
#define RELAX_RELOC_ABS16 BFD_RELOC_16
#define RELAX_RELOC_ABS32 BFD_RELOC_32
#define RELAX_RELOC_PC8   BFD_RELOC_8_PCREL
#define RELAX_RELOC_PC16  BFD_RELOC_16_PCREL
#define RELAX_RELOC_PC32  BFD_RELOC_32_PCREL

#ifdef OBJ_ELF
#define tc_fix_adjustable(X) tc_m68k_fix_adjustable(X)
extern int tc_m68k_fix_adjustable (struct fix *);

/* Target *-*-elf implies an embedded target.  No shared libs.
   *-*-uclinux also requires special casing to prevent GAS from
   generating unsupported R_68K_PC16 relocs.  */
#define EXTERN_FORCE_RELOC \
  ((strcmp (TARGET_OS, "elf") != 0) && (strcmp (TARGET_OS, "uclinux") != 0))

/* Values passed to md_apply_fix don't include symbol values.  */
#define MD_APPLY_SYM_VALUE(FIX) 0

#define elf_tc_final_processing m68k_elf_final_processing
extern void m68k_elf_final_processing (void);
#endif

#else /* ! BFD_ASSEMBLER */

#define tc_frob_coff_symbol(sym) m68k_frob_symbol (sym)

#define NO_RELOC          0
#define RELAX_RELOC_ABS8  0
#define RELAX_RELOC_ABS16 0
#define RELAX_RELOC_ABS32 0
#define RELAX_RELOC_PC8   0
#define RELAX_RELOC_PC16  0
#define RELAX_RELOC_PC32  0

#endif /* ! BFD_ASSEMBLER */

#define DIFF_EXPR_OK

extern void m68k_init_after_args (void);
#define tc_init_after_args m68k_init_after_args

extern int m68k_parse_long_option (char *);
#define md_parse_long_option m68k_parse_long_option

#define md_operand(x)

#define TARGET_ARCH bfd_arch_m68k

extern struct relax_type md_relax_table[];
#define TC_GENERIC_RELAX_TABLE md_relax_table

/* We can't do a byte jump to the next instruction, so in that case
   force word mode by faking AIM.  */
#define md_prepare_relax_scan(fragP, address, aim, this_state, this_type) \
  do									  \
    {								 	  \
      if (aim == 0 && this_type->rlx_forward == 127)			  \
        aim = 128;							  \
    }									  \
  while (0)

#define DWARF2_LINE_MIN_INSN_LENGTH 2

/* We want .cfi_* pseudo-ops for generating unwind info.  */
#define TARGET_USE_CFIPOP 1

#define DWARF2_DEFAULT_RETURN_COLUMN 24
#define DWARF2_CIE_DATA_ALIGNMENT (-4)

#define tc_regname_to_dw2regnum tc_m68k_regname_to_dw2regnum
extern int tc_m68k_regname_to_dw2regnum (const char *regname);

#define tc_cfi_frame_initial_instructions tc_m68k_frame_initial_instructions
extern void tc_m68k_frame_initial_instructions (void);
Commit	Line	Data
252b5132	1	/* This file is tc-m68k.h
f7e42eb4	2	Copyright 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
9d0e75cb	3	1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
252b5132 RH	4	Free Software Foundation, Inc.
	5
	6	This file is part of GAS, the GNU Assembler.
	7
	8	GAS 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	GAS 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 GAS; see the file COPYING. If not, write to the Free
4b4da160 NC	20	Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
4b4da160 NC	21	02110-1301, USA. */
252b5132 RH	22
	23	#define TC_M68K 1
	24
252b5132	25	struct fix;
252b5132 RH	26
	27	#define TARGET_BYTES_BIG_ENDIAN 1
	28
	29	#ifdef OBJ_AOUT
	30	#ifdef TE_SUN3
	31	#define TARGET_FORMAT "a.out-sunos-big"
	32	#endif
	33	#ifdef TE_NetBSD
	34	#define TARGET_FORMAT "a.out-m68k-netbsd"
	35	#endif
	36	#ifdef TE_LINUX
	37	#define TARGET_FORMAT "a.out-m68k-linux"
	38	#endif
	39	#ifndef TARGET_FORMAT
	40	#define TARGET_FORMAT "a.out-zero-big"
	41	#endif
	42	#endif
	43
	44	#ifdef OBJ_ELF
	45	#define TARGET_FORMAT "elf32-m68k"
	46	#endif
	47
	48	#ifdef TE_APOLLO
	49	#define COFF_MAGIC APOLLOM68KMAGIC
	50	#define COFF_AOUTHDR_MAGIC APOLLO_COFF_VERSION_NUMBER
	51	#undef OBJ_COFF_OMIT_OPTIONAL_HEADER
	52	#endif
	53
252b5132 RH	54	#ifdef TE_AUX
	55	#define TARGET_FORMAT "coff-m68k-aux"
	56	#endif
	57	#ifdef TE_DELTA
	58	#define TARGET_FORMAT "coff-m68k-sysv"
	59	#endif
	60
	61	#ifndef COFF_MAGIC
	62	#define COFF_MAGIC MC68MAGIC
	63	#endif
	64	#define BFD_ARCH bfd_arch_m68k /* for non-BFD_ASSEMBLER */
	65	#define TARGET_ARCH bfd_arch_m68k /* BFD_ASSEMBLER */
	66	#define COFF_FLAGS F_AR32W
	67	#define TC_COUNT_RELOC(x) ((x)->fx_addsy\|\|(x)->fx_subsy)
	68
a161fe53	69	#define TC_COFF_FIX2RTYPE(FIX) tc_coff_fix2rtype(FIX)
252b5132	70	#define TC_COFF_SIZEMACHDEP(frag) tc_coff_sizemachdep(frag)
8f738565	71	extern int tc_coff_sizemachdep (struct frag *);
252b5132 RH	72	#ifdef TE_SUN3
	73	/* This variable contains the value to write out at the beginning of
	74	the a.out file. The 2<<16 means that this is a 68020 file instead
	75	of an old-style 68000 file */
	76
	77	#define DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE (2<<16\|OMAGIC); /* Magic byte for file header */
	78	#endif /* TE_SUN3 */
	79
	80	#ifndef AOUT_MACHTYPE
	81	#define AOUT_MACHTYPE m68k_aout_machtype
	82	extern int m68k_aout_machtype;
	83	#endif
	84
	85	#define tc_comment_chars m68k_comment_chars
	86	extern const char *m68k_comment_chars;
	87
	88	#define tc_crawl_symbol_chain(a) {;} /* not used */
	89	#define tc_headers_hook(a) {;} /* not used */
	90	#define tc_aout_pre_write_hook(x) {;} /* not used */
	91
	92	#define LISTING_WORD_SIZE 2 /* A word is 2 bytes */
	93	#define LISTING_LHS_WIDTH 2 /* One word on the first line */
	94	#define LISTING_LHS_WIDTH_SECOND 2 /* One word on the second line */
	95	#define LISTING_LHS_CONT_LINES 4/* And 4 lines max */
	96	#define LISTING_HEADER "68K GAS "
	97
	98	#ifndef REGISTER_PREFIX
	99	#define REGISTER_PREFIX '%'
	100	#endif
	101
	102	#if !defined (REGISTER_PREFIX_OPTIONAL)
	103	#if defined (M68KCOFF) \|\| defined (OBJ_ELF)
	104	#ifndef BFD_ASSEMBLER
	105	#define LOCAL_LABEL(name) (name[0] == '.' \
	106	&& (name[1] == 'L' \|\| name[1] == '.'))
	107	#endif /* ! BFD_ASSEMBLER */
	108	#define REGISTER_PREFIX_OPTIONAL 0
	109	#else /* ! (COFF \|\| ELF) */
	110	#define REGISTER_PREFIX_OPTIONAL 1
	111	#endif /* ! (COFF \|\| ELF) */
	112	#endif /* not def REGISTER_PREFIX and not def OPTIONAL_REGISTER_PREFIX */
	113
	114	#ifdef TE_DELTA
	115	/* On the Delta, `%' can occur within a label name, but not as the
	116	initial character. */
	117	#define LEX_PCT LEX_NAME
81d4177b	118	/* On the Delta, `~' can start a label name, but is converted to '.'. */
252b5132 RH	119	#define LEX_TILDE LEX_BEGIN_NAME
	120	#define tc_canonicalize_symbol_name(s) (((s) == '~' ? (s) = '.' : '.'), s)
	121	/* On the Delta, dots are not required before pseudo-ops. */
abd63a32	122	#define NO_PSEUDO_DOT 1
252b5132 RH	123	#ifndef BFD_ASSEMBLER
	124	#undef LOCAL_LABEL
	125	#define LOCAL_LABEL(name) \
	126	(name[0] == '.' \|\| (name[0] == 'L' && name[1] == '%'))
	127	#endif
	128	#endif
	129
8f738565	130	extern void m68k_mri_mode_change (int);
252b5132 RH	131	#define MRI_MODE_CHANGE(i) m68k_mri_mode_change (i)
252b5132 RH	132
8f738565	133	extern int m68k_conditional_pseudoop (pseudo_typeS *);
252b5132 RH	134	#define tc_conditional_pseudoop(pop) m68k_conditional_pseudoop (pop)
252b5132 RH	135
8f738565	136	extern void m68k_frob_label (symbolS *);
252b5132 RH	137	#define tc_frob_label(sym) m68k_frob_label (sym)
252b5132 RH	138
8f738565	139	extern void m68k_flush_pending_output (void);
252b5132 RH	140	#define md_flush_pending_output() m68k_flush_pending_output ()
252b5132 RH	141
8f738565	142	extern void m68k_frob_symbol (symbolS *);
252b5132 RH	143
	144	#ifdef BFD_ASSEMBLER
	145
	146	#define tc_frob_symbol(sym,punt) \
	147	do \
	148	{ \
	149	if (S_GET_SEGMENT (sym) == reg_section) \
	150	punt = 1; \
	151	m68k_frob_symbol (sym); \
	152	} \
	153	while (0)
	154
	155	#define NO_RELOC BFD_RELOC_NONE
5cbdaa77 NC	156	#define RELAX_RELOC_ABS8 BFD_RELOC_8
	157	#define RELAX_RELOC_ABS16 BFD_RELOC_16
	158	#define RELAX_RELOC_ABS32 BFD_RELOC_32
	159	#define RELAX_RELOC_PC8 BFD_RELOC_8_PCREL
	160	#define RELAX_RELOC_PC16 BFD_RELOC_16_PCREL
	161	#define RELAX_RELOC_PC32 BFD_RELOC_32_PCREL
252b5132 RH	162
252b5132 RH	163	#ifdef OBJ_ELF
8f36cd18	164	#define tc_fix_adjustable(X) tc_m68k_fix_adjustable(X)
8f738565	165	extern int tc_m68k_fix_adjustable (struct fix *);
8f36cd18	166
6358301e NC	167	/* Target --elf implies an embedded target. No shared libs.
	168	--uclinux also requires special casing to prevent GAS from
	169	generating unsupported R_68K_PC16 relocs. */
	170	#define EXTERN_FORCE_RELOC \
	171	((strcmp (TARGET_OS, "elf") != 0) && (strcmp (TARGET_OS, "uclinux") != 0))
a161fe53	172
55cf6793	173	/* Values passed to md_apply_fix don't include symbol values. */
a161fe53	174	#define MD_APPLY_SYM_VALUE(FIX) 0
02198638	175
0d96863f	176	#define elf_tc_final_processing m68k_elf_final_processing
8f738565	177	extern void m68k_elf_final_processing (void);
252b5132 RH	178	#endif
252b5132 RH	179
252b5132 RH	180	#else /* ! BFD_ASSEMBLER */
	181
	182	#define tc_frob_coff_symbol(sym) m68k_frob_symbol (sym)
	183
5cbdaa77 NC	184	#define NO_RELOC 0
	185	#define RELAX_RELOC_ABS8 0
	186	#define RELAX_RELOC_ABS16 0
	187	#define RELAX_RELOC_ABS32 0
	188	#define RELAX_RELOC_PC8 0
	189	#define RELAX_RELOC_PC16 0
	190	#define RELAX_RELOC_PC32 0
252b5132 RH	191
	192	#endif /* ! BFD_ASSEMBLER */
	193
	194	#define DIFF_EXPR_OK
	195
8f738565	196	extern void m68k_init_after_args (void);
252b5132 RH	197	#define tc_init_after_args m68k_init_after_args
252b5132 RH	198
8f738565	199	extern int m68k_parse_long_option (char *);
252b5132 RH	200	#define md_parse_long_option m68k_parse_long_option
	201
	202	#define md_operand(x)
	203
252b5132 RH	204	#define TARGET_ARCH bfd_arch_m68k
	205
	206	extern struct relax_type md_relax_table[];
	207	#define TC_GENERIC_RELAX_TABLE md_relax_table
	208
d7861ad2 AM	209	/* We can't do a byte jump to the next instruction, so in that case
d7861ad2 AM	210	force word mode by faking AIM. */
252b5132	211	#define md_prepare_relax_scan(fragP, address, aim, this_state, this_type) \
d7861ad2 AM	212	do \
	213	{ \
	214	if (aim == 0 && this_type->rlx_forward == 127) \
	215	aim = 128; \
	216	} \
	217	while (0)
f27a3839 AS	218
f27a3839 AS	219	#define DWARF2_LINE_MIN_INSN_LENGTH 2
c04898f8 AS	220
	221	/* We want .cfi_* pseudo-ops for generating unwind info. */
	222	#define TARGET_USE_CFIPOP 1
	223
	224	#define DWARF2_DEFAULT_RETURN_COLUMN 24
	225	#define DWARF2_CIE_DATA_ALIGNMENT (-4)
	226
	227	#define tc_regname_to_dw2regnum tc_m68k_regname_to_dw2regnum
	228	extern int tc_m68k_regname_to_dw2regnum (const char *regname);
	229
	230	#define tc_cfi_frame_initial_instructions tc_m68k_frame_initial_instructions
	231	extern void tc_m68k_frame_initial_instructions (void);