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

/* This file is tc-sh.h
   Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
   2003 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, 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#define TC_SH

#define TARGET_ARCH bfd_arch_sh

#if ANSI_PROTOTYPES
/* The type fixS is defined (to struct fix) in write.h, but write.h uses
   definitions from this file.  To avoid problems with including write.h
   after the "right" definitions, don't; just forward-declare struct fix
   here.  */
struct fix;
struct segment_info_struct;
struct internal_reloc;
#endif

/* Whether -relax was used.  */
extern int sh_relax;

/* Whether -small was used.  */
extern int sh_small;

/* Don't try to break words.  */
#define WORKING_DOT_WORD

/* All SH instructions are multiples of 16 bits.  */
#define DWARF2_LINE_MIN_INSN_LENGTH 2

/* We require .long, et. al., to be aligned correctly.  */
#define md_cons_align(nbytes) sh_cons_align (nbytes)
extern void sh_cons_align PARAMS ((int));

/* When relaxing, we need to generate relocations for alignment
   directives.  */
#define HANDLE_ALIGN(frag) sh_handle_align (frag)
extern void sh_handle_align PARAMS ((fragS *));

#define MAX_MEM_FOR_RS_ALIGN_CODE (1 + 2)

/* We need to force out some relocations when relaxing.  */
#define TC_FORCE_RELOCATION(fix) sh_force_relocation (fix)
extern int sh_force_relocation PARAMS ((struct fix *));

/* This macro decides whether a particular reloc is an entry in a
   switch table.  It is used when relaxing, because the linker needs
   to know about all such entries so that it can adjust them if
   necessary.  */

#ifdef BFD_ASSEMBLER
#define SWITCH_TABLE_CONS(FIX) (0)
#else
#define SWITCH_TABLE_CONS(FIX)				\
  ((FIX)->fx_r_type == 0				\
   && ((FIX)->fx_size == 2				\
       || (FIX)->fx_size == 1				\
       || (FIX)->fx_size == 4))
#endif

#define SWITCH_TABLE(FIX)				\
  ((FIX)->fx_addsy != NULL				\
   && (FIX)->fx_subsy != NULL				\
   && S_GET_SEGMENT ((FIX)->fx_addsy) == text_section	\
   && S_GET_SEGMENT ((FIX)->fx_subsy) == text_section	\
   && ((FIX)->fx_r_type == BFD_RELOC_32			\
       || (FIX)->fx_r_type == BFD_RELOC_16		\
       || (FIX)->fx_r_type == BFD_RELOC_8		\
       || SWITCH_TABLE_CONS (FIX)))

#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEC)		\
  (! SEG_NORMAL (SEC)					\
   || TC_FORCE_RELOCATION (FIX)				\
   || (sh_relax && SWITCH_TABLE (FIX)))

/* Don't complain when we leave fx_subsy around.  */
#define TC_VALIDATE_FIX_SUB(FIX)			\
  (sh_relax && SWITCH_TABLE (FIX))

#define MD_PCREL_FROM_SECTION(FIX, SEC) md_pcrel_from_section (FIX, SEC)
extern long md_pcrel_from_section PARAMS ((struct fix *, segT));

#define IGNORE_NONSTANDARD_ESCAPES

#define LISTING_HEADER \
  (!target_big_endian \
   ? "Hitachi Super-H GAS Little Endian" : "Hitachi Super-H GAS Big Endian")

#define md_operand(x)

extern const struct relax_type md_relax_table[];
#define TC_GENERIC_RELAX_TABLE md_relax_table

/* We record, for each section, whether we have most recently output a
   CODE reloc or a DATA reloc.  */
struct sh_segment_info_type
{
  int in_code : 1;
};
#define TC_SEGMENT_INFO_TYPE struct sh_segment_info_type

/* We call a routine to emit a reloc for a label, so that the linker
   can align loads and stores without crossing a label.  */
extern void sh_frob_label PARAMS ((void));
#define tc_frob_label(sym) sh_frob_label ()

/* We call a routine to flush pending output in order to output a DATA
   reloc when required.  */
extern void sh_flush_pending_output PARAMS ((void));
#define md_flush_pending_output() sh_flush_pending_output ()

#ifdef BFD_ASSEMBLER
#define tc_frob_file_before_adjust sh_frob_file
#else
#define tc_frob_file sh_frob_file
#endif
extern void sh_frob_file PARAMS ((void));


#ifdef OBJ_COFF
/* COFF specific definitions.  */

#define DO_NOT_STRIP 0

/* This macro translates between an internal fix and a coff reloc type.  */
#define TC_COFF_FIX2RTYPE(fix) ((fix)->fx_r_type)

#define BFD_ARCH TARGET_ARCH

#define COFF_MAGIC (!target_big_endian ? SH_ARCH_MAGIC_LITTLE : SH_ARCH_MAGIC_BIG)

/* We need to write out relocs which have not been completed.  */
#define TC_COUNT_RELOC(fix) ((fix)->fx_addsy != NULL)

#define TC_RELOC_MANGLE(seg, fix, int, paddr) \
  sh_coff_reloc_mangle ((seg), (fix), (int), (paddr))
extern void sh_coff_reloc_mangle
  PARAMS ((struct segment_info_struct *, struct fix *,
	   struct internal_reloc *, unsigned int));

#define tc_coff_symbol_emit_hook(a) ; /* not used */

#define NEED_FX_R_TYPE 1

#define TC_KEEP_FX_OFFSET 1

#define TC_COFF_SIZEMACHDEP(frag) tc_coff_sizemachdep(frag)
extern int tc_coff_sizemachdep PARAMS ((fragS *));

#ifdef BFD_ASSEMBLER
#define SEG_NAME(SEG) segment_name (SEG)
#else
#define SEG_NAME(SEG) obj_segment_name (SEG)
#endif

/* We align most sections to a 16 byte boundary.  */
#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN)			\
  (strncmp (SEG_NAME (SEG), ".stabstr", 8) == 0		\
   ? 0							\
   : ((strncmp (SEG_NAME (SEG), ".stab", 5) == 0	\
       || strcmp (SEG_NAME (SEG), ".ctors") == 0	\
       || strcmp (SEG_NAME (SEG), ".dtors") == 0)	\
      ? 2						\
      : (sh_small ? 2 : 4)))

#endif /* OBJ_COFF */

#ifdef OBJ_ELF
/* ELF specific definitions.  */

/* Whether or not the target is big endian */
extern int target_big_endian;
#ifdef TE_LINUX
#define TARGET_FORMAT (!target_big_endian ? "elf32-sh-linux" : "elf32-shbig-linux")
#elif defined(TE_NetBSD)
#define TARGET_FORMAT (!target_big_endian ? "elf32-shl-nbsd" : "elf32-sh-nbsd")
#else
#define TARGET_FORMAT (!target_big_endian ? "elf32-shl" : "elf32-sh")
#endif

#define elf_tc_final_processing sh_elf_final_processing
extern void sh_elf_final_processing PARAMS ((void));

#define DIFF_EXPR_OK		/* foo-. gets turned into PC relative relocs */

#define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_"

/* This is the relocation type for direct references to
   GLOBAL_OFFSET_TABLE.  It comes up in complicated expressions such
   as _GLOBAL_OFFSET_TABLE_+[.-.L284], which cannot be expressed
   normally with the regular expressions.  The fixup specified here
   when used at runtime implies that we should add the address of the
   GOT to the specified location, and as a result we have simplified
   the expression into something we can use.  */
#define TC_RELOC_GLOBAL_OFFSET_TABLE BFD_RELOC_SH_GOTPC

#define tc_fix_adjustable(FIX) sh_fix_adjustable(FIX)
extern bfd_boolean sh_fix_adjustable PARAMS ((struct fix *));

/* Values passed to md_apply_fix3 don't include symbol values.  */
#define MD_APPLY_SYM_VALUE(FIX) 0

/* This expression evaluates to true if the relocation is for a local object
   for which we still want to do the relocation at runtime.  False if we
   are willing to perform this relocation while building the .o file.

   We can't resolve references to the GOT or the PLT when creating the
   object file, since these tables are only created by the linker.
   Also, if the symbol is global, weak, common or not defined, the
   assembler can't compute the appropriate reloc, since its location
   can only be determined at link time.  */

#define TC_FORCE_RELOCATION_LOCAL(FIX)			\
  (!(FIX)->fx_pcrel					\
   || (FIX)->fx_plt					\
   || (FIX)->fx_r_type == BFD_RELOC_32_PLT_PCREL	\
   || (FIX)->fx_r_type == BFD_RELOC_32_GOT_PCREL	\
   || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPC		\
   || TC_FORCE_RELOCATION (FIX))

/* This keeps the subtracted symbol around, for use by PLT_PCREL
   relocs.  */
#define TC_FORCE_RELOCATION_SUB_ABS(FIX)		\
  ((FIX)->fx_r_type == BFD_RELOC_32_PLT_PCREL)

/* Don't complain when we leave fx_subsy around.  */
#undef TC_VALIDATE_FIX_SUB
#define TC_VALIDATE_FIX_SUB(FIX)			\
  ((FIX)->fx_r_type == BFD_RELOC_32_PLT_PCREL		\
   || (sh_relax && SWITCH_TABLE (FIX)))

#define md_parse_name(name, exprP, nextcharP) \
  sh_parse_name ((name), (exprP), (nextcharP))
int sh_parse_name PARAMS ((char const *name,
			   expressionS *exprP,
			   char *nextchar));

#define TC_CONS_FIX_NEW(FRAG, OFF, LEN, EXP) \
  sh_cons_fix_new ((FRAG), (OFF), (LEN), (EXP))
void sh_cons_fix_new PARAMS ((fragS *, int, int, expressionS *));

/* This is used to construct expressions out of @GOTOFF, @PLT and @GOT
   symbols.  The relocation type is stored in X_md.  */
#define O_PIC_reloc O_md1

#endif /* OBJ_ELF */
Commit	Line	Data
252b5132	1	/* This file is tc-sh.h
ae6063d4 AM	2	Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
ae6063d4 AM	3	2003 Free Software Foundation, Inc.
252b5132 RH	4
	5	This file is part of GAS, the GNU Assembler.
	6
	7	GAS is free software; you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
	9	the Free Software Foundation; either version 2, or (at your option)
	10	any later version.
	11
	12	GAS is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
	18	along with GAS; see the file COPYING. If not, write to
	19	the Free Software Foundation, 59 Temple Place - Suite 330,
	20	Boston, MA 02111-1307, USA. */
	21
	22	#define TC_SH
	23
252b5132 RH	24	#define TARGET_ARCH bfd_arch_sh
	25
	26	#if ANSI_PROTOTYPES
a161fe53 AM	27	/* The type fixS is defined (to struct fix) in write.h, but write.h uses
	28	definitions from this file. To avoid problems with including write.h
	29	after the "right" definitions, don't; just forward-declare struct fix
	30	here. */
	31	struct fix;
252b5132 RH	32	struct segment_info_struct;
	33	struct internal_reloc;
	34	#endif
	35
252b5132 RH	36	/* Whether -relax was used. */
	37	extern int sh_relax;
	38
	39	/* Whether -small was used. */
	40	extern int sh_small;
	41
	42	/* Don't try to break words. */
	43	#define WORKING_DOT_WORD
	44
0d10e182 JL	45	/* All SH instructions are multiples of 16 bits. */
	46	#define DWARF2_LINE_MIN_INSN_LENGTH 2
	47
252b5132 RH	48	/* We require .long, et. al., to be aligned correctly. */
	49	#define md_cons_align(nbytes) sh_cons_align (nbytes)
	50	extern void sh_cons_align PARAMS ((int));
	51
	52	/* When relaxing, we need to generate relocations for alignment
	53	directives. */
	54	#define HANDLE_ALIGN(frag) sh_handle_align (frag)
	55	extern void sh_handle_align PARAMS ((fragS *));
	56
0a9ef439 RH	57	#define MAX_MEM_FOR_RS_ALIGN_CODE (1 + 2)
0a9ef439 RH	58
252b5132 RH	59	/* We need to force out some relocations when relaxing. */
252b5132 RH	60	#define TC_FORCE_RELOCATION(fix) sh_force_relocation (fix)
e08ae979	61	extern int sh_force_relocation PARAMS ((struct fix *));
252b5132	62
a161fe53 AM	63	/* This macro decides whether a particular reloc is an entry in a
	64	switch table. It is used when relaxing, because the linker needs
	65	to know about all such entries so that it can adjust them if
	66	necessary. */
a1cc9221	67
a161fe53 AM	68	#ifdef BFD_ASSEMBLER
	69	#define SWITCH_TABLE_CONS(FIX) (0)
	70	#else
	71	#define SWITCH_TABLE_CONS(FIX) \
	72	((FIX)->fx_r_type == 0 \
	73	&& ((FIX)->fx_size == 2 \
	74	\|\| (FIX)->fx_size == 1 \
	75	\|\| (FIX)->fx_size == 4))
252b5132 RH	76	#endif
252b5132 RH	77
a161fe53 AM	78	#define SWITCH_TABLE(FIX) \
	79	((FIX)->fx_addsy != NULL \
	80	&& (FIX)->fx_subsy != NULL \
	81	&& S_GET_SEGMENT ((FIX)->fx_addsy) == text_section \
	82	&& S_GET_SEGMENT ((FIX)->fx_subsy) == text_section \
	83	&& ((FIX)->fx_r_type == BFD_RELOC_32 \
	84	\|\| (FIX)->fx_r_type == BFD_RELOC_16 \
	85	\|\| (FIX)->fx_r_type == BFD_RELOC_8 \
	86	\|\| SWITCH_TABLE_CONS (FIX)))
	87
ae6063d4 AM	88	#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEC) \
	89	(! SEG_NORMAL (SEC) \
	90	\|\| TC_FORCE_RELOCATION (FIX) \
a161fe53 AM	91	\|\| (sh_relax && SWITCH_TABLE (FIX)))
	92
	93	/* Don't complain when we leave fx_subsy around. */
	94	#define TC_VALIDATE_FIX_SUB(FIX) \
	95	(sh_relax && SWITCH_TABLE (FIX))
	96
	97	#define MD_PCREL_FROM_SECTION(FIX, SEC) md_pcrel_from_section (FIX, SEC)
79ad6e94 HPN	98	extern long md_pcrel_from_section PARAMS ((struct fix *, segT));
79ad6e94 HPN	99
252b5132 RH	100	#define IGNORE_NONSTANDARD_ESCAPES
252b5132 RH	101
05982cac HPN	102	#define LISTING_HEADER \
	103	(!target_big_endian \
	104	? "Hitachi Super-H GAS Little Endian" : "Hitachi Super-H GAS Big Endian")
252b5132 RH	105
	106	#define md_operand(x)
	107
	108	extern const struct relax_type md_relax_table[];
	109	#define TC_GENERIC_RELAX_TABLE md_relax_table
	110
252b5132 RH	111	/* We record, for each section, whether we have most recently output a
	112	CODE reloc or a DATA reloc. */
	113	struct sh_segment_info_type
	114	{
	115	int in_code : 1;
	116	};
	117	#define TC_SEGMENT_INFO_TYPE struct sh_segment_info_type
	118
	119	/* We call a routine to emit a reloc for a label, so that the linker
	120	can align loads and stores without crossing a label. */
	121	extern void sh_frob_label PARAMS ((void));
	122	#define tc_frob_label(sym) sh_frob_label ()
	123
	124	/* We call a routine to flush pending output in order to output a DATA
	125	reloc when required. */
	126	extern void sh_flush_pending_output PARAMS ((void));
	127	#define md_flush_pending_output() sh_flush_pending_output ()
	128
	129	#ifdef BFD_ASSEMBLER
	130	#define tc_frob_file_before_adjust sh_frob_file
	131	#else
	132	#define tc_frob_file sh_frob_file
	133	#endif
	134	extern void sh_frob_file PARAMS ((void));
	135
a161fe53	136
252b5132 RH	137	#ifdef OBJ_COFF
	138	/* COFF specific definitions. */
	139
	140	#define DO_NOT_STRIP 0
	141
c03099e6	142	/* This macro translates between an internal fix and a coff reloc type. */
252b5132 RH	143	#define TC_COFF_FIX2RTYPE(fix) ((fix)->fx_r_type)
	144
	145	#define BFD_ARCH TARGET_ARCH
	146
05982cac	147	#define COFF_MAGIC (!target_big_endian ? SH_ARCH_MAGIC_LITTLE : SH_ARCH_MAGIC_BIG)
252b5132 RH	148
	149	/* We need to write out relocs which have not been completed. */
	150	#define TC_COUNT_RELOC(fix) ((fix)->fx_addsy != NULL)
	151
	152	#define TC_RELOC_MANGLE(seg, fix, int, paddr) \
	153	sh_coff_reloc_mangle ((seg), (fix), (int), (paddr))
	154	extern void sh_coff_reloc_mangle
	155	PARAMS ((struct segment_info_struct , struct fix ,
	156	struct internal_reloc *, unsigned int));
	157
	158	#define tc_coff_symbol_emit_hook(a) ; /* not used */
	159
	160	#define NEED_FX_R_TYPE 1
	161
	162	#define TC_KEEP_FX_OFFSET 1
	163
	164	#define TC_COFF_SIZEMACHDEP(frag) tc_coff_sizemachdep(frag)
	165	extern int tc_coff_sizemachdep PARAMS ((fragS *));
	166
056350c6	167	#ifdef BFD_ASSEMBLER
21d75ec2	168	#define SEG_NAME(SEG) segment_name (SEG)
056350c6	169	#else
21d75ec2 NC	170	#define SEG_NAME(SEG) obj_segment_name (SEG)
	171	#endif
	172
252b5132	173	/* We align most sections to a 16 byte boundary. */
18e1d487	174	#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) \
21d75ec2 NC	175	(strncmp (SEG_NAME (SEG), ".stabstr", 8) == 0 \
	176	? 0 \
	177	: ((strncmp (SEG_NAME (SEG), ".stab", 5) == 0 \
	178	\|\| strcmp (SEG_NAME (SEG), ".ctors") == 0 \
	179	\|\| strcmp (SEG_NAME (SEG), ".dtors") == 0) \
	180	? 2 \
252b5132 RH	181	: (sh_small ? 2 : 4)))
	182
	183	#endif /* OBJ_COFF */
	184
	185	#ifdef OBJ_ELF
	186	/* ELF specific definitions. */
	187
	188	/* Whether or not the target is big endian */
	189	extern int target_big_endian;
d07ed2cd	190	#ifdef TE_LINUX
05982cac	191	#define TARGET_FORMAT (!target_big_endian ? "elf32-sh-linux" : "elf32-shbig-linux")
8d05742f JT	192	#elif defined(TE_NetBSD)
8d05742f JT	193	#define TARGET_FORMAT (!target_big_endian ? "elf32-shl-nbsd" : "elf32-sh-nbsd")
d07ed2cd	194	#else
05982cac	195	#define TARGET_FORMAT (!target_big_endian ? "elf32-shl" : "elf32-sh")
d07ed2cd	196	#endif
252b5132	197
d4845d57 JR	198	#define elf_tc_final_processing sh_elf_final_processing
	199	extern void sh_elf_final_processing PARAMS ((void));
	200
a1cc9221 AO	201	#define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */
	202
	203	#define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_"
81d4177b	204
a1cc9221 AO	205	/* This is the relocation type for direct references to
	206	GLOBAL_OFFSET_TABLE. It comes up in complicated expressions such
	207	as _GLOBAL_OFFSET_TABLE_+[.-.L284], which cannot be expressed
	208	normally with the regular expressions. The fixup specified here
	209	when used at runtime implies that we should add the address of the
	210	GOT to the specified location, and as a result we have simplified
	211	the expression into something we can use. */
	212	#define TC_RELOC_GLOBAL_OFFSET_TABLE BFD_RELOC_SH_GOTPC
	213
a161fe53	214	#define tc_fix_adjustable(FIX) sh_fix_adjustable(FIX)
b34976b6	215	extern bfd_boolean sh_fix_adjustable PARAMS ((struct fix *));
a161fe53 AM	216
	217	/* Values passed to md_apply_fix3 don't include symbol values. */
	218	#define MD_APPLY_SYM_VALUE(FIX) 0
	219
	220	/* This expression evaluates to true if the relocation is for a local object
	221	for which we still want to do the relocation at runtime. False if we
a1cc9221	222	are willing to perform this relocation while building the .o file.
a1cc9221 AO	223
	224	We can't resolve references to the GOT or the PLT when creating the
	225	object file, since these tables are only created by the linker.
	226	Also, if the symbol is global, weak, common or not defined, the
	227	assembler can't compute the appropriate reloc, since its location
	228	can only be determined at link time. */
	229
a161fe53 AM	230	#define TC_FORCE_RELOCATION_LOCAL(FIX) \
	231	(!(FIX)->fx_pcrel \
	232	\|\| (FIX)->fx_plt \
	233	\|\| (FIX)->fx_r_type == BFD_RELOC_32_PLT_PCREL \
	234	\|\| (FIX)->fx_r_type == BFD_RELOC_32_GOT_PCREL \
	235	\|\| (FIX)->fx_r_type == BFD_RELOC_SH_GOTPC \
	236	\|\| TC_FORCE_RELOCATION (FIX))
	237
	238	/* This keeps the subtracted symbol around, for use by PLT_PCREL
	239	relocs. */
	240	#define TC_FORCE_RELOCATION_SUB_ABS(FIX) \
ae6063d4	241	((FIX)->fx_r_type == BFD_RELOC_32_PLT_PCREL)
a161fe53 AM	242
	243	/* Don't complain when we leave fx_subsy around. */
	244	#undef TC_VALIDATE_FIX_SUB
	245	#define TC_VALIDATE_FIX_SUB(FIX) \
	246	((FIX)->fx_r_type == BFD_RELOC_32_PLT_PCREL \
	247	\|\| (sh_relax && SWITCH_TABLE (FIX)))
a1cc9221	248
538cd60f AO	249	#define md_parse_name(name, exprP, nextcharP) \
	250	sh_parse_name ((name), (exprP), (nextcharP))
	251	int sh_parse_name PARAMS ((char const *name,
	252	expressionS *exprP,
	253	char *nextchar));
	254
	255	#define TC_CONS_FIX_NEW(FRAG, OFF, LEN, EXP) \
	256	sh_cons_fix_new ((FRAG), (OFF), (LEN), (EXP))
	257	void sh_cons_fix_new PARAMS ((fragS , int, int, expressionS ));
	258
	259	/* This is used to construct expressions out of @GOTOFF, @PLT and @GOT
	260	symbols. The relocation type is stored in X_md. */
	261	#define O_PIC_reloc O_md1
	262
252b5132	263	#endif /* OBJ_ELF */