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

/* This file is tc-arm.h
   Copyright (C) 1994-2014 Free Software Foundation, Inc.
   Contributed by Richard Earnshaw (rwe@pegasus.esprit.ec.org)
	Modified by David Taylor (dtaylor@armltd.co.uk)

   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 3, 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_ARM 1

#ifndef TARGET_BYTES_BIG_ENDIAN
#define TARGET_BYTES_BIG_ENDIAN 0
#endif

#define WORKING_DOT_WORD

#define COFF_MAGIC 	ARMMAGIC
#define TARGET_ARCH 	bfd_arch_arm

#define DIFF_EXPR_OK

#ifdef  LITTLE_ENDIAN
#undef  LITTLE_ENDIAN
#endif

#ifdef  BIG_ENDIAN
#undef  BIG_ENDIAN
#endif

#define LITTLE_ENDIAN 	1234
#define BIG_ENDIAN 	4321

struct fix;

#if defined OBJ_AOUT
# if defined TE_RISCIX
#  define TARGET_FORMAT "a.out-riscix"
# elif defined TE_LINUX
#  define ARM_BI_ENDIAN
#  define TARGET_FORMAT "a.out-arm-linux"
# elif defined TE_NetBSD
#  define TARGET_FORMAT "a.out-arm-netbsd"
# else
#  define ARM_BI_ENDIAN
#  define TARGET_FORMAT (target_big_endian ? "a.out-arm-big" : "a.out-arm-little")
# endif
#elif defined OBJ_AIF
# define TARGET_FORMAT "aif"
#elif defined OBJ_COFF
# define ARM_BI_ENDIAN
# if defined TE_PE
#  if defined TE_EPOC
#   define TARGET_FORMAT (target_big_endian ? "epoc-pe-arm-big" : "epoc-pe-arm-little")
#  elif defined TE_WINCE
#   define TARGET_FORMAT (target_big_endian ? "pe-arm-wince-big" : "pe-arm-wince-little")
#  else
#   define TARGET_FORMAT (target_big_endian ? "pe-arm-big" : "pe-arm-little")
#  endif
# else
#  define TARGET_FORMAT (target_big_endian ? "coff-arm-big" : "coff-arm-little")
# endif
#elif defined OBJ_ELF
# define ARM_BI_ENDIAN
# define TARGET_FORMAT	elf32_arm_target_format ()
#endif

/* We support double slash line-comments for compatibility with the ARM AArch64 Assembler.  */
#define DOUBLESLASH_LINE_COMMENTS

#define tc_symbol_chars arm_symbol_chars
extern const char arm_symbol_chars[];

#define TC_FORCE_RELOCATION(FIX) arm_force_relocation (FIX)

extern unsigned int arm_frag_max_var (struct frag *);
#define md_frag_max_var arm_frag_max_var

#define md_relax_frag(segment, fragp, stretch) \
  arm_relax_frag (segment, fragp, stretch)
extern int arm_relax_frag (asection *, struct frag *, long);

#define md_optimize_expr(l,o,r)		arm_optimize_expr (l, o, r)
extern int arm_optimize_expr (expressionS *, operatorT, expressionS *);

#define md_cleanup() arm_cleanup ()

#define md_start_line_hook() arm_start_line_hook ()

#define tc_frob_label(S) arm_frob_label (S)

/* We also need to mark assembler created symbols:  */
#define tc_frob_fake_label(S) arm_frob_label (S)

#ifdef OBJ_ELF
#define md_end arm_md_end
extern void arm_md_end (void);
bfd_boolean arm_is_eabi (void);
#endif

/* NOTE: The fake label creation in stabs.c:s_stab_generic() has
   deliberately not been updated to mark assembler created stabs
   symbols as Thumb.  */

#define TC_FIX_TYPE int
#define TC_INIT_FIX_DATA(FIX) ((FIX)->tc_fix_data = 0)

/* We need to keep some local information on symbols.  */

#define TC_SYMFIELD_TYPE 	unsigned int
#define ARM_GET_FLAG(s)   	(*symbol_get_tc (s))
#define ARM_SET_FLAG(s,v) 	(*symbol_get_tc (s) |= (v))
#define ARM_RESET_FLAG(s,v) 	(*symbol_get_tc (s) &= ~(v))

#define ARM_FLAG_THUMB 		(1 << 0)	/* The symbol is a Thumb symbol rather than an Arm symbol.  */
#define ARM_FLAG_INTERWORK 	(1 << 1)	/* The symbol is attached to code that supports interworking.  */
#define THUMB_FLAG_FUNC		(1 << 2)	/* The symbol is attached to the start of a Thumb function.  */

#define ARM_IS_THUMB(s)		(ARM_GET_FLAG (s) & ARM_FLAG_THUMB)
#define ARM_IS_INTERWORK(s)	(ARM_GET_FLAG (s) & ARM_FLAG_INTERWORK)

#ifdef OBJ_ELF

/* For ELF objects THUMB_IS_FUNC is inferred from
   ARM_IS_THUMB and the function type.  */
#define THUMB_IS_FUNC(s)					\
  ((s) != NULL							\
   && ((arm_is_eabi ()						\
	&& (ARM_IS_THUMB (s))					\
	&& (symbol_get_bfdsym (s)->flags & BSF_FUNCTION))	\
       || (ARM_GET_FLAG (s) & THUMB_FLAG_FUNC)))

#define ARM_IS_FUNC(s)					\
  (((s) != NULL						\
    && arm_is_eabi ()					\
    && !(ARM_IS_THUMB (s))				\
    /* && !(THUMB_FLAG_FUNC & ARM_GET_FLAG (s)) \ */	\
    && (symbol_get_bfdsym (s)->flags & BSF_FUNCTION)))


#else

#define THUMB_IS_FUNC(s)	((s) && ARM_GET_FLAG (s) & THUMB_FLAG_FUNC)
#define ARM_IS_FUNC(s)          (!THUMB_IS_FUNC (s) \
				 && (s) && (symbol_get_bfdsym (s)->flags & BSF_FUNCTION))
#endif

#define ARM_SET_THUMB(s,t)      ((t) ? ARM_SET_FLAG (s, ARM_FLAG_THUMB)     : ARM_RESET_FLAG (s, ARM_FLAG_THUMB))
#define ARM_SET_INTERWORK(s,t)  ((t) ? ARM_SET_FLAG (s, ARM_FLAG_INTERWORK) : ARM_RESET_FLAG (s, ARM_FLAG_INTERWORK))
#define THUMB_SET_FUNC(s,t)     ((t) ? ARM_SET_FLAG (s, THUMB_FLAG_FUNC)    : ARM_RESET_FLAG (s, THUMB_FLAG_FUNC))

void arm_copy_symbol_attributes (symbolS *, symbolS *);

#ifndef TC_COPY_SYMBOL_ATTRIBUTES
#define TC_COPY_SYMBOL_ATTRIBUTES(DEST, SRC) \
  (arm_copy_symbol_attributes (DEST, SRC))
#endif

#define TC_START_LABEL(C,S,STR)            (C == ':' || (C == '/' && arm_data_in_code ()))
#define tc_canonicalize_symbol_name(str) arm_canonicalize_symbol_name (str);
#define obj_adjust_symtab() 		 arm_adjust_symtab ()

#define LISTING_HEADER "ARM GAS "

#define OPTIONAL_REGISTER_PREFIX '%'

#define LOCAL_LABEL(name)  (name[0] == '.' && name[1] == 'L')
#define LOCAL_LABELS_FB    1

/* 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.  GOTOFF does not need to be checked here because it is
   not pcrel.  I am not sure if some of the others are ever used with
   pcrel, but it is easier to be safe than sorry.  */

#define TC_FORCE_RELOCATION_LOCAL(FIX)			\
  (!(FIX)->fx_pcrel					\
   || (FIX)->fx_r_type == BFD_RELOC_ARM_GOT32		\
   || (FIX)->fx_r_type == BFD_RELOC_32			\
   || ((FIX)->fx_addsy != NULL && S_IS_WEAK ((FIX)->fx_addsy))	\
   || TC_FORCE_RELOCATION (FIX))

/* Force output of R_ARM_REL32 relocations against thumb function symbols.
   This is needed to ensure the low bit is handled correctly.  */
#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG)	\
  (THUMB_IS_FUNC ((FIX)->fx_addsy)		\
   || !SEG_NORMAL (SEG))

#define TC_FORCE_RELOCATION_ABS(FIX)			\
  (((FIX)->fx_pcrel					\
    && (FIX)->fx_r_type != BFD_RELOC_32			\
    && (FIX)->fx_r_type != BFD_RELOC_ARM_GOT32)		\
   || TC_FORCE_RELOCATION(FIX))

#define TC_CONS_FIX_NEW cons_fix_new_arm

#define MAX_MEM_ALIGNMENT_BYTES    6
#define MAX_MEM_FOR_RS_ALIGN_CODE ((1 << MAX_MEM_ALIGNMENT_BYTES) - 1)

/* For frags in code sections we need to record whether they contain
   ARM code or THUMB code.  This is that if they have to be aligned,
   they can contain the correct type of no-op instruction.  */
struct arm_frag_type
{
  int thumb_mode;
#ifdef OBJ_ELF
  /* If there is a mapping symbol at offset 0 in this frag,
     it will be saved in FIRST_MAP.  If there are any mapping
     symbols in this frag, the last one will be saved in
     LAST_MAP.  */
  symbolS *first_map, *last_map;
#endif
};

#define TC_FRAG_TYPE		struct arm_frag_type
/* NOTE: max_chars is a local variable from frag_var / frag_variant.  */
#define TC_FRAG_INIT(fragp)	arm_init_frag (fragp, max_chars)
#define HANDLE_ALIGN(fragp)	arm_handle_align (fragp)

#define md_do_align(N, FILL, LEN, MAX, LABEL)					\
  if (FILL == NULL && (N) != 0 && ! need_pass_2 && subseg_text_p (now_seg))	\
    {										\
      arm_frag_align_code (N, MAX);						\
      goto LABEL;								\
    }

#define DWARF2_LINE_MIN_INSN_LENGTH 	2

/* The lr register is r14.  */
#define DWARF2_DEFAULT_RETURN_COLUMN  14

/* Registers are generally saved at negative offsets to the CFA.  */
#define DWARF2_CIE_DATA_ALIGNMENT     (-4)

/* State variables for IT block handling.  */
enum it_state
{
  OUTSIDE_IT_BLOCK, MANUAL_IT_BLOCK, AUTOMATIC_IT_BLOCK
};
struct current_it
{
  int mask;
  enum it_state state;
  int cc;
  int block_length;
  char *insn;
  int state_handled;
  int warn_deprecated;
  int insn_cond;
};

#ifdef OBJ_ELF
# define obj_frob_symbol(sym, punt)	armelf_frob_symbol ((sym), & (punt))
# define md_elf_section_change_hook()	arm_elf_change_section ()
# define md_elf_section_type(str, len)	arm_elf_section_type (str, len)
# define GLOBAL_OFFSET_TABLE_NAME	"_GLOBAL_OFFSET_TABLE_"
# define TC_SEGMENT_INFO_TYPE 		struct arm_segment_info_type

/* This is not really an alignment operation, but it's something we
   need to do at the same time: whenever we are figuring out the
   alignment for data, we should check whether a $d symbol is
   necessary.  */
# define md_cons_align(nbytes)		mapping_state (MAP_DATA)

enum mstate
{
  MAP_UNDEFINED = 0, /* Must be zero, for seginfo in new sections.  */
  MAP_DATA,
  MAP_ARM,
  MAP_THUMB
};

void mapping_state (enum mstate);

struct arm_segment_info_type
{
  enum mstate mapstate;

  /* Bit N indicates that an R_ARM_NONE relocation has been output for
     __aeabi_unwind_cpp_prN already if set. This enables dependencies to be
     emitted only once per section, to save unnecessary bloat.  */
  unsigned int marked_pr_dependency;

  struct current_it current_it;
};

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

/* CFI hooks.  */
#define tc_regname_to_dw2regnum            tc_arm_regname_to_dw2regnum
#define tc_cfi_frame_initial_instructions  tc_arm_frame_initial_instructions

#else /* Not OBJ_ELF.  */
#define GLOBAL_OFFSET_TABLE_NAME "__GLOBAL_OFFSET_TABLE_"
#endif

#if defined OBJ_ELF || defined OBJ_COFF

# define EXTERN_FORCE_RELOC 			1
# define tc_fix_adjustable(FIX) 		arm_fix_adjustable (FIX)
#endif

#ifdef OBJ_ELF
/* Values passed to md_apply_fix don't include the symbol value.  */
# define MD_APPLY_SYM_VALUE(FIX) 		arm_apply_sym_value (FIX)
#endif

#ifdef OBJ_COFF
# define TC_VALIDATE_FIX(FIX, SEGTYPE, LABEL)	arm_validate_fix (FIX)
/* Values passed to md_apply_fix don't include the symbol value.  */
# define MD_APPLY_SYM_VALUE(FIX) 		0
#endif

#define MD_PCREL_FROM_SECTION(F,S) md_pcrel_from_section(F,S)

extern long md_pcrel_from_section (struct fix *, segT);
extern void arm_frag_align_code (int, int);
extern void arm_validate_fix (struct fix *);
extern const char * elf32_arm_target_format (void);
extern void arm_elf_change_section (void);
extern int arm_force_relocation (struct fix *);
extern void arm_cleanup (void);
extern void arm_start_line_hook (void);
extern void arm_frob_label (symbolS *);
extern int arm_data_in_code (void);
extern char * arm_canonicalize_symbol_name (char *);
extern void arm_adjust_symtab (void);
extern void armelf_frob_symbol (symbolS *, int *);
extern void cons_fix_new_arm (fragS *, int, int, expressionS *);
extern void arm_init_frag (struct frag *, int);
extern void arm_handle_align (struct frag *);
extern bfd_boolean arm_fix_adjustable (struct fix *);
extern int arm_elf_section_type (const char *, size_t);
extern int tc_arm_regname_to_dw2regnum (char *regname);
extern void tc_arm_frame_initial_instructions (void);

#ifdef TE_PE

#define O_secrel O_md1

#define TC_DWARF2_EMIT_OFFSET  tc_pe_dwarf2_emit_offset
void tc_pe_dwarf2_emit_offset (symbolS *, unsigned int);

#endif /* TE_PE */

#ifdef OBJ_ELF
#define CONVERT_SYMBOLIC_ATTRIBUTE(name) arm_convert_symbolic_attribute (name)
extern int arm_convert_symbolic_attribute (const char *);
extern int arm_apply_sym_value (struct fix *);
#endif
Commit	Line	Data
252b5132	1	/* This file is tc-arm.h
4b95cf5c	2	Copyright (C) 1994-2014 Free Software Foundation, Inc.
252b5132 RH	3	Contributed by Richard Earnshaw (rwe@pegasus.esprit.ec.org)
	4	Modified by David Taylor (dtaylor@armltd.co.uk)
	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
ec2655a6	10	the Free Software Foundation; either version 3, or (at your option)
252b5132 RH	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_ARM 1
	24
	25	#ifndef TARGET_BYTES_BIG_ENDIAN
	26	#define TARGET_BYTES_BIG_ENDIAN 0
	27	#endif
	28
	29	#define WORKING_DOT_WORD
	30
	31	#define COFF_MAGIC ARMMAGIC
	32	#define TARGET_ARCH bfd_arch_arm
	33
252b5132 RH	34	#define DIFF_EXPR_OK
	35
	36	#ifdef LITTLE_ENDIAN
	37	#undef LITTLE_ENDIAN
	38	#endif
	39
	40	#ifdef BIG_ENDIAN
	41	#undef BIG_ENDIAN
	42	#endif
	43
	44	#define LITTLE_ENDIAN 1234
	45	#define BIG_ENDIAN 4321
	46
a161fe53 AM	47	struct fix;
a161fe53 AM	48
69b97547 NC	49	#if defined OBJ_AOUT
	50	# if defined TE_RISCIX
	51	# define TARGET_FORMAT "a.out-riscix"
	52	# elif defined TE_LINUX
	53	# define ARM_BI_ENDIAN
	54	# define TARGET_FORMAT "a.out-arm-linux"
	55	# elif defined TE_NetBSD
	56	# define TARGET_FORMAT "a.out-arm-netbsd"
	57	# else
	58	# define ARM_BI_ENDIAN
	59	# define TARGET_FORMAT (target_big_endian ? "a.out-arm-big" : "a.out-arm-little")
	60	# endif
	61	#elif defined OBJ_AIF
	62	# define TARGET_FORMAT "aif"
	63	#elif defined OBJ_COFF
252b5132	64	# define ARM_BI_ENDIAN
252b5132	65	# if defined TE_PE
69b97547 NC	66	# if defined TE_EPOC
69b97547 NC	67	# define TARGET_FORMAT (target_big_endian ? "epoc-pe-arm-big" : "epoc-pe-arm-little")
7148cc28 NC	68	# elif defined TE_WINCE
7148cc28 NC	69	# define TARGET_FORMAT (target_big_endian ? "pe-arm-wince-big" : "pe-arm-wince-little")
69b97547 NC	70	# else
	71	# define TARGET_FORMAT (target_big_endian ? "pe-arm-big" : "pe-arm-little")
	72	# endif
252b5132 RH	73	# else
	74	# define TARGET_FORMAT (target_big_endian ? "coff-arm-big" : "coff-arm-little")
	75	# endif
69b97547 NC	76	#elif defined OBJ_ELF
	77	# define ARM_BI_ENDIAN
	78	# define TARGET_FORMAT elf32_arm_target_format ()
252b5132 RH	79	#endif
252b5132 RH	80
1bf10b0d NC	81	/* We support double slash line-comments for compatibility with the ARM AArch64 Assembler. */
	82	#define DOUBLESLASH_LINE_COMMENTS
	83
bacebabc RM	84	#define tc_symbol_chars arm_symbol_chars
	85	extern const char arm_symbol_chars[];
	86
114424c6	87	#define TC_FORCE_RELOCATION(FIX) arm_force_relocation (FIX)
114424c6	88
fa94de6b RM	89	extern unsigned int arm_frag_max_var (struct frag *);
	90	#define md_frag_max_var arm_frag_max_var
	91
0110f2b8	92	#define md_relax_frag(segment, fragp, stretch) \
e07e6e58	93	arm_relax_frag (segment, fragp, stretch)
0110f2b8	94	extern int arm_relax_frag (asection , struct frag , long);
252b5132	95
a8bc6c78 PB	96	#define md_optimize_expr(l,o,r) arm_optimize_expr (l, o, r)
	97	extern int arm_optimize_expr (expressionS , operatorT, expressionS );
	98
252b5132	99	#define md_cleanup() arm_cleanup ()
252b5132 RH	100
252b5132 RH	101	#define md_start_line_hook() arm_start_line_hook ()
252b5132 RH	102
252b5132 RH	103	#define tc_frob_label(S) arm_frob_label (S)
252b5132 RH	104
	105	/* We also need to mark assembler created symbols: */
	106	#define tc_frob_fake_label(S) arm_frob_label (S)
	107
ee065d83 PB	108	#ifdef OBJ_ELF
	109	#define md_end arm_md_end
	110	extern void arm_md_end (void);
e1da3f5b	111	bfd_boolean arm_is_eabi (void);
ee065d83 PB	112	#endif
ee065d83 PB	113
252b5132 RH	114	/* NOTE: The fake label creation in stabs.c:s_stab_generic() has
	115	deliberately not been updated to mark assembler created stabs
	116	symbols as Thumb. */
	117
adbaf948 ZW	118	#define TC_FIX_TYPE int
adbaf948 ZW	119	#define TC_INIT_FIX_DATA(FIX) ((FIX)->tc_fix_data = 0)
29c4c6b5	120
252b5132 RH	121	/* We need to keep some local information on symbols. */
252b5132 RH	122
69b97547	123	#define TC_SYMFIELD_TYPE unsigned int
174419c1 ILT	124	#define ARM_GET_FLAG(s) (*symbol_get_tc (s))
	125	#define ARM_SET_FLAG(s,v) (*symbol_get_tc (s) \|= (v))
	126	#define ARM_RESET_FLAG(s,v) (*symbol_get_tc (s) &= ~(v))
252b5132 RH	127
252b5132 RH	128	#define ARM_FLAG_THUMB (1 << 0) /* The symbol is a Thumb symbol rather than an Arm symbol. */
2d2255b5	129	#define ARM_FLAG_INTERWORK (1 << 1) /* The symbol is attached to code that supports interworking. */
252b5132 RH	130	#define THUMB_FLAG_FUNC (1 << 2) /* The symbol is attached to the start of a Thumb function. */
	131
	132	#define ARM_IS_THUMB(s) (ARM_GET_FLAG (s) & ARM_FLAG_THUMB)
	133	#define ARM_IS_INTERWORK(s) (ARM_GET_FLAG (s) & ARM_FLAG_INTERWORK)
e07e6e58	134
e1da3f5b PB	135	#ifdef OBJ_ELF
	136
	137	/* For ELF objects THUMB_IS_FUNC is inferred from
267bf995	138	ARM_IS_THUMB and the function type. */
63b33ceb NC	139	#define THUMB_IS_FUNC(s) \
	140	((s) != NULL \
	141	&& ((arm_is_eabi () \
	142	&& (ARM_IS_THUMB (s)) \
	143	&& (symbol_get_bfdsym (s)->flags & BSF_FUNCTION)) \
	144	\|\| (ARM_GET_FLAG (s) & THUMB_FLAG_FUNC)))
	145
	146	#define ARM_IS_FUNC(s) \
	147	(((s) != NULL \
	148	&& arm_is_eabi () \
	149	&& !(ARM_IS_THUMB (s)) \
	150	/* && !(THUMB_FLAG_FUNC & ARM_GET_FLAG (s)) \ */ \
267bf995 RR	151	&& (symbol_get_bfdsym (s)->flags & BSF_FUNCTION)))
	152
	153
e1da3f5b	154	#else
e07e6e58	155
63b33ceb	156	#define THUMB_IS_FUNC(s) ((s) && ARM_GET_FLAG (s) & THUMB_FLAG_FUNC)
267bf995	157	#define ARM_IS_FUNC(s) (!THUMB_IS_FUNC (s) \
63b33ceb	158	&& (s) && (symbol_get_bfdsym (s)->flags & BSF_FUNCTION))
e1da3f5b	159	#endif
252b5132 RH	160
	161	#define ARM_SET_THUMB(s,t) ((t) ? ARM_SET_FLAG (s, ARM_FLAG_THUMB) : ARM_RESET_FLAG (s, ARM_FLAG_THUMB))
	162	#define ARM_SET_INTERWORK(s,t) ((t) ? ARM_SET_FLAG (s, ARM_FLAG_INTERWORK) : ARM_RESET_FLAG (s, ARM_FLAG_INTERWORK))
	163	#define THUMB_SET_FUNC(s,t) ((t) ? ARM_SET_FLAG (s, THUMB_FLAG_FUNC) : ARM_RESET_FLAG (s, THUMB_FLAG_FUNC))
	164
794ba86a	165	void arm_copy_symbol_attributes (symbolS , symbolS );
e07e6e58	166
794ba86a DJ	167	#ifndef TC_COPY_SYMBOL_ATTRIBUTES
	168	#define TC_COPY_SYMBOL_ATTRIBUTES(DEST, SRC) \
	169	(arm_copy_symbol_attributes (DEST, SRC))
	170	#endif
	171
5e8c8f8f	172	#define TC_START_LABEL(C,S,STR) (C == ':' \|\| (C == '/' && arm_data_in_code ()))
69b97547 NC	173	#define tc_canonicalize_symbol_name(str) arm_canonicalize_symbol_name (str);
69b97547 NC	174	#define obj_adjust_symtab() arm_adjust_symtab ()
252b5132 RH	175
	176	#define LISTING_HEADER "ARM GAS "
	177
	178	#define OPTIONAL_REGISTER_PREFIX '%'
	179
37f6032b ZW	180	#define LOCAL_LABEL(name) (name[0] == '.' && name[1] == 'L')
37f6032b ZW	181	#define LOCAL_LABELS_FB 1
252b5132	182
a161fe53 AM	183	/* This expression evaluates to true if the relocation is for a local
	184	object for which we still want to do the relocation at runtime.
	185	False if we are willing to perform this relocation while building
	186	the .o file. GOTOFF does not need to be checked here because it is
	187	not pcrel. I am not sure if some of the others are ever used with
252b5132 RH	188	pcrel, but it is easier to be safe than sorry. */
252b5132 RH	189
a161fe53 AM	190	#define TC_FORCE_RELOCATION_LOCAL(FIX) \
a161fe53 AM	191	(!(FIX)->fx_pcrel \
a161fe53 AM	192	\|\| (FIX)->fx_r_type == BFD_RELOC_ARM_GOT32 \
a161fe53 AM	193	\|\| (FIX)->fx_r_type == BFD_RELOC_32 \
1fc5d88e	194	\|\| ((FIX)->fx_addsy != NULL && S_IS_WEAK ((FIX)->fx_addsy)) \
a161fe53	195	\|\| TC_FORCE_RELOCATION (FIX))
252b5132	196
a8bc6c78 PB	197	/* Force output of R_ARM_REL32 relocations against thumb function symbols.
	198	This is needed to ensure the low bit is handled correctly. */
	199	#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \
	200	(THUMB_IS_FUNC ((FIX)->fx_addsy) \
	201	\|\| !SEG_NORMAL (SEG))
	202
6e7ce2cd PB	203	#define TC_FORCE_RELOCATION_ABS(FIX) \
	204	(((FIX)->fx_pcrel \
	205	&& (FIX)->fx_r_type != BFD_RELOC_32 \
	206	&& (FIX)->fx_r_type != BFD_RELOC_ARM_GOT32) \
	207	\|\| TC_FORCE_RELOCATION(FIX))
	208
252b5132	209	#define TC_CONS_FIX_NEW cons_fix_new_arm
16a0c2d4	210
140033b3 NC	211	#define MAX_MEM_ALIGNMENT_BYTES 6
140033b3 NC	212	#define MAX_MEM_FOR_RS_ALIGN_CODE ((1 << MAX_MEM_ALIGNMENT_BYTES) - 1)
d8708f40	213
16a0c2d4 NC	214	/* For frags in code sections we need to record whether they contain
	215	ARM code or THUMB code. This is that if they have to be aligned,
	216	they can contain the correct type of no-op instruction. */
cd000bff DJ	217	struct arm_frag_type
	218	{
	219	int thumb_mode;
	220	#ifdef OBJ_ELF
	221	/* If there is a mapping symbol at offset 0 in this frag,
	222	it will be saved in FIRST_MAP. If there are any mapping
	223	symbols in this frag, the last one will be saved in
	224	LAST_MAP. */
	225	symbolS first_map, last_map;
	226	#endif
	227	};
	228
	229	#define TC_FRAG_TYPE struct arm_frag_type
	230	/* NOTE: max_chars is a local variable from frag_var / frag_variant. */
	231	#define TC_FRAG_INIT(fragp) arm_init_frag (fragp, max_chars)
69b97547	232	#define HANDLE_ALIGN(fragp) arm_handle_align (fragp)
16a0c2d4 NC	233
	234	#define md_do_align(N, FILL, LEN, MAX, LABEL) \
	235	if (FILL == NULL && (N) != 0 && ! need_pass_2 && subseg_text_p (now_seg)) \
	236	{ \
	237	arm_frag_align_code (N, MAX); \
	238	goto LABEL; \
	239	}
69b97547	240
f0927246 NC	241	#define DWARF2_LINE_MIN_INSN_LENGTH 2
	242
	243	/* The lr register is r14. */
	244	#define DWARF2_DEFAULT_RETURN_COLUMN 14
	245
	246	/* Registers are generally saved at negative offsets to the CFA. */
8d79fd44	247	#define DWARF2_CIE_DATA_ALIGNMENT (-4)
f0927246	248
e07e6e58 NC	249	/* State variables for IT block handling. */
	250	enum it_state
	251	{
	252	OUTSIDE_IT_BLOCK, MANUAL_IT_BLOCK, AUTOMATIC_IT_BLOCK
	253	};
	254	struct current_it
	255	{
	256	int mask;
	257	enum it_state state;
	258	int cc;
	259	int block_length;
	260	char *insn;
	261	int state_handled;
5a01bb1d MGD	262	int warn_deprecated;
5a01bb1d MGD	263	int insn_cond;
e07e6e58 NC	264	};
e07e6e58 NC	265
69b97547	266	#ifdef OBJ_ELF
69b97547 NC	267	# define obj_frob_symbol(sym, punt) armelf_frob_symbol ((sym), & (punt))
69b97547 NC	268	# define md_elf_section_change_hook() arm_elf_change_section ()
40a18ebd	269	# define md_elf_section_type(str, len) arm_elf_section_type (str, len)
69b97547	270	# define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_"
84798bd6	271	# define TC_SEGMENT_INFO_TYPE struct arm_segment_info_type
69b97547	272
e821645d DJ	273	/* This is not really an alignment operation, but it's something we
	274	need to do at the same time: whenever we are figuring out the
	275	alignment for data, we should check whether a $d symbol is
	276	necessary. */
	277	# define md_cons_align(nbytes) mapping_state (MAP_DATA)
	278
69b97547 NC	279	enum mstate
	280	{
	281	MAP_UNDEFINED = 0, /* Must be zero, for seginfo in new sections. */
	282	MAP_DATA,
	283	MAP_ARM,
	284	MAP_THUMB
	285	};
	286
e821645d DJ	287	void mapping_state (enum mstate);
e821645d DJ	288
84798bd6 JB	289	struct arm_segment_info_type
	290	{
	291	enum mstate mapstate;
940b5ce0 DJ	292
	293	/* Bit N indicates that an R_ARM_NONE relocation has been output for
	294	__aeabi_unwind_cpp_prN already if set. This enables dependencies to be
	295	emitted only once per section, to save unnecessary bloat. */
84798bd6	296	unsigned int marked_pr_dependency;
940b5ce0	297
e07e6e58	298	struct current_it current_it;
84798bd6 JB	299	};
84798bd6 JB	300
a394c00f NC	301	/* We want .cfi_* pseudo-ops for generating unwind info. */
	302	#define TARGET_USE_CFIPOP 1
	303
a394c00f NC	304	/* CFI hooks. */
	305	#define tc_regname_to_dw2regnum tc_arm_regname_to_dw2regnum
	306	#define tc_cfi_frame_initial_instructions tc_arm_frame_initial_instructions
	307
69b97547 NC	308	#else /* Not OBJ_ELF. */
	309	#define GLOBAL_OFFSET_TABLE_NAME "__GLOBAL_OFFSET_TABLE_"
	310	#endif
	311
	312	#if defined OBJ_ELF \|\| defined OBJ_COFF
	313
	314	# define EXTERN_FORCE_RELOC 1
	315	# define tc_fix_adjustable(FIX) arm_fix_adjustable (FIX)
267bf995 RR	316	#endif
	317
	318	#ifdef OBJ_ELF
55cf6793	319	/* Values passed to md_apply_fix don't include the symbol value. */
267bf995	320	# define MD_APPLY_SYM_VALUE(FIX) arm_apply_sym_value (FIX)
4343666d	321	#endif
69b97547	322
4343666d RR	323	#ifdef OBJ_COFF
4343666d RR	324	# define TC_VALIDATE_FIX(FIX, SEGTYPE, LABEL) arm_validate_fix (FIX)
267bf995 RR	325	/* Values passed to md_apply_fix don't include the symbol value. */
267bf995 RR	326	# define MD_APPLY_SYM_VALUE(FIX) 0
69b97547 NC	327	#endif
69b97547 NC	328
2fc8bdac ZW	329	#define MD_PCREL_FROM_SECTION(F,S) md_pcrel_from_section(F,S)
	330
	331	extern long md_pcrel_from_section (struct fix *, segT);
69b97547 NC	332	extern void arm_frag_align_code (int, int);
	333	extern void arm_validate_fix (struct fix *);
	334	extern const char * elf32_arm_target_format (void);
	335	extern void arm_elf_change_section (void);
	336	extern int arm_force_relocation (struct fix *);
	337	extern void arm_cleanup (void);
	338	extern void arm_start_line_hook (void);
	339	extern void arm_frob_label (symbolS *);
	340	extern int arm_data_in_code (void);
	341	extern char * arm_canonicalize_symbol_name (char *);
	342	extern void arm_adjust_symtab (void);
	343	extern void armelf_frob_symbol (symbolS , int );
	344	extern void cons_fix_new_arm (fragS , int, int, expressionS );
cd000bff	345	extern void arm_init_frag (struct frag *, int);
69b97547 NC	346	extern void arm_handle_align (struct frag *);
69b97547 NC	347	extern bfd_boolean arm_fix_adjustable (struct fix *);
40a18ebd	348	extern int arm_elf_section_type (const char *, size_t);
1df69f4f	349	extern int tc_arm_regname_to_dw2regnum (char *regname);
a394c00f	350	extern void tc_arm_frame_initial_instructions (void);
f0927246 NC	351
	352	#ifdef TE_PE
	353
	354	#define O_secrel O_md1
	355
	356	#define TC_DWARF2_EMIT_OFFSET tc_pe_dwarf2_emit_offset
	357	void tc_pe_dwarf2_emit_offset (symbolS *, unsigned int);
	358
	359	#endif /* TE_PE */
e04befd0	360
f31fef98	361	#ifdef OBJ_ELF
e04befd0	362	#define CONVERT_SYMBOLIC_ATTRIBUTE(name) arm_convert_symbolic_attribute (name)
f31fef98	363	extern int arm_convert_symbolic_attribute (const char *);
267bf995	364	extern int arm_apply_sym_value (struct fix *);
f31fef98	365	#endif