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

/* This file is tc-arm.h
   Copyright (C) 1994-2018 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_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

/* We conditionally support labels without a colon.  */
#define LABELS_WITHOUT_COLONS codecomposer_syntax
extern bfd_boolean codecomposer_syntax;

#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_START_LABEL_WITHOUT_COLON(NUL_CHAR, NEXT_CHAR) \
  tc_start_label_without_colon ()
extern bfd_boolean tc_start_label_without_colon (void);

#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);

#define md_post_relax_hook		arm_md_post_relax ()
extern void arm_md_post_relax (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(STR, NUL_CHAR, NEXT_CHAR)			\
  (NEXT_CHAR == ':' || (NEXT_CHAR == '/' && 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)			\
  (GENERIC_FORCE_RELOCATION_LOCAL (FIX)			\
   || (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)))

/* 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)	\
  (GENERIC_FORCE_RELOCATION_SUB_SAME (FIX, SEG)	\
   || THUMB_IS_FUNC ((FIX)->fx_addsy))

#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
};

static inline int
arm_min (int am_p1, int am_p2)
{
  return am_p1 < am_p2 ? am_p1 : am_p2;
}

#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 TC_ALIGN_ZERO_IS_DEFAULT 1
#define HANDLE_ALIGN(fragp)	arm_handle_align (fragp)
/* PR gas/19276: COFF/PE segment alignment is already handled in coff_frob_section().  */
#ifndef TE_PE
#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN)				\
  ((!(FRCHAIN)->frch_next && subseg_text_p (SEG))		\
   ? arm_min (2, get_recorded_alignment (SEG)) : 0)
#endif

#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, this_segment)
#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 *,
			      bfd_reloc_code_real_type);
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 *, segT);
#endif

#define tc_comment_chars arm_comment_chars
extern char arm_comment_chars[];

#define tc_line_separator_chars arm_line_separator_chars
extern char arm_line_separator_chars[];

#define TC_EQUAL_IN_INSN(c, s) arm_tc_equal_in_insn ((c), (s))
extern bfd_boolean arm_tc_equal_in_insn (int, char *);
Commit	Line	Data
	1	/* This file is tc-arm.h
	2	Copyright (C) 1994-2018 Free Software Foundation, Inc.
	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
	10	the Free Software Foundation; either version 3, 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
	20	Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
	21	02110-1301, USA. */
	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
	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
	47	struct fix;
	48
	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
	64	# define ARM_BI_ENDIAN
	65	# if defined TE_PE
	66	# if defined TE_WINCE
	67	# define TARGET_FORMAT (target_big_endian ? "pe-arm-wince-big" : "pe-arm-wince-little")
	68	# else
	69	# define TARGET_FORMAT (target_big_endian ? "pe-arm-big" : "pe-arm-little")
	70	# endif
	71	# else
	72	# define TARGET_FORMAT (target_big_endian ? "coff-arm-big" : "coff-arm-little")
	73	# endif
	74	#elif defined OBJ_ELF
	75	# define ARM_BI_ENDIAN
	76	# define TARGET_FORMAT elf32_arm_target_format ()
	77	#endif
	78
	79	/* We support double slash line-comments for compatibility with the ARM AArch64 Assembler. */
	80	#define DOUBLESLASH_LINE_COMMENTS
	81
	82	/* We conditionally support labels without a colon. */
	83	#define LABELS_WITHOUT_COLONS codecomposer_syntax
	84	extern bfd_boolean codecomposer_syntax;
	85
	86	#define tc_symbol_chars arm_symbol_chars
	87	extern const char arm_symbol_chars[];
	88
	89	#define TC_FORCE_RELOCATION(FIX) arm_force_relocation (FIX)
	90
	91	extern unsigned int arm_frag_max_var (struct frag *);
	92	#define md_frag_max_var arm_frag_max_var
	93
	94	#define md_relax_frag(segment, fragp, stretch) \
	95	arm_relax_frag (segment, fragp, stretch)
	96	extern int arm_relax_frag (asection , struct frag , long);
	97
	98	#define md_optimize_expr(l,o,r) arm_optimize_expr (l, o, r)
	99	extern int arm_optimize_expr (expressionS , operatorT, expressionS );
	100
	101	#define md_cleanup() arm_cleanup ()
	102
	103	#define md_start_line_hook() arm_start_line_hook ()
	104
	105	#define TC_START_LABEL_WITHOUT_COLON(NUL_CHAR, NEXT_CHAR) \
	106	tc_start_label_without_colon ()
	107	extern bfd_boolean tc_start_label_without_colon (void);
	108
	109	#define tc_frob_label(S) arm_frob_label (S)
	110
	111	/* We also need to mark assembler created symbols: */
	112	#define tc_frob_fake_label(S) arm_frob_label (S)
	113
	114	#ifdef OBJ_ELF
	115	#define md_end arm_md_end
	116	extern void arm_md_end (void);
	117	bfd_boolean arm_is_eabi (void);
	118
	119	#define md_post_relax_hook arm_md_post_relax ()
	120	extern void arm_md_post_relax (void);
	121	#endif
	122
	123	/* NOTE: The fake label creation in stabs.c:s_stab_generic() has
	124	deliberately not been updated to mark assembler created stabs
	125	symbols as Thumb. */
	126
	127	#define TC_FIX_TYPE int
	128	#define TC_INIT_FIX_DATA(FIX) ((FIX)->tc_fix_data = 0)
	129
	130	/* We need to keep some local information on symbols. */
	131
	132	#define TC_SYMFIELD_TYPE unsigned int
	133	#define ARM_GET_FLAG(s) (*symbol_get_tc (s))
	134	#define ARM_SET_FLAG(s,v) (*symbol_get_tc (s) \|= (v))
	135	#define ARM_RESET_FLAG(s,v) (*symbol_get_tc (s) &= ~(v))
	136
	137	#define ARM_FLAG_THUMB (1 << 0) /* The symbol is a Thumb symbol rather than an Arm symbol. */
	138	#define ARM_FLAG_INTERWORK (1 << 1) /* The symbol is attached to code that supports interworking. */
	139	#define THUMB_FLAG_FUNC (1 << 2) /* The symbol is attached to the start of a Thumb function. */
	140
	141	#define ARM_IS_THUMB(s) (ARM_GET_FLAG (s) & ARM_FLAG_THUMB)
	142	#define ARM_IS_INTERWORK(s) (ARM_GET_FLAG (s) & ARM_FLAG_INTERWORK)
	143
	144	#ifdef OBJ_ELF
	145
	146	/* For ELF objects THUMB_IS_FUNC is inferred from
	147	ARM_IS_THUMB and the function type. */
	148	#define THUMB_IS_FUNC(s) \
	149	((s) != NULL \
	150	&& ((arm_is_eabi () \
	151	&& (ARM_IS_THUMB (s)) \
	152	&& (symbol_get_bfdsym (s)->flags & BSF_FUNCTION)) \
	153	\|\| (ARM_GET_FLAG (s) & THUMB_FLAG_FUNC)))
	154
	155	#define ARM_IS_FUNC(s) \
	156	(((s) != NULL \
	157	&& arm_is_eabi () \
	158	&& !(ARM_IS_THUMB (s)) \
	159	/* && !(THUMB_FLAG_FUNC & ARM_GET_FLAG (s)) \ */ \
	160	&& (symbol_get_bfdsym (s)->flags & BSF_FUNCTION)))
	161
	162
	163	#else
	164
	165	#define THUMB_IS_FUNC(s) ((s) && ARM_GET_FLAG (s) & THUMB_FLAG_FUNC)
	166	#define ARM_IS_FUNC(s) (!THUMB_IS_FUNC (s) \
	167	&& (s) && (symbol_get_bfdsym (s)->flags & BSF_FUNCTION))
	168	#endif
	169
	170	#define ARM_SET_THUMB(s,t) ((t) ? ARM_SET_FLAG (s, ARM_FLAG_THUMB) : ARM_RESET_FLAG (s, ARM_FLAG_THUMB))
	171	#define ARM_SET_INTERWORK(s,t) ((t) ? ARM_SET_FLAG (s, ARM_FLAG_INTERWORK) : ARM_RESET_FLAG (s, ARM_FLAG_INTERWORK))
	172	#define THUMB_SET_FUNC(s,t) ((t) ? ARM_SET_FLAG (s, THUMB_FLAG_FUNC) : ARM_RESET_FLAG (s, THUMB_FLAG_FUNC))
	173
	174	void arm_copy_symbol_attributes (symbolS , symbolS );
	175
	176	#ifndef TC_COPY_SYMBOL_ATTRIBUTES
	177	#define TC_COPY_SYMBOL_ATTRIBUTES(DEST, SRC) \
	178	(arm_copy_symbol_attributes (DEST, SRC))
	179	#endif
	180
	181	#define TC_START_LABEL(STR, NUL_CHAR, NEXT_CHAR) \
	182	(NEXT_CHAR == ':' \|\| (NEXT_CHAR == '/' && arm_data_in_code ()))
	183	#define tc_canonicalize_symbol_name(str) arm_canonicalize_symbol_name (str);
	184	#define obj_adjust_symtab() arm_adjust_symtab ()
	185
	186	#define LISTING_HEADER "ARM GAS "
	187
	188	#define OPTIONAL_REGISTER_PREFIX '%'
	189
	190	#define LOCAL_LABEL(name) (name[0] == '.' && name[1] == 'L')
	191	#define LOCAL_LABELS_FB 1
	192
	193	/* This expression evaluates to true if the relocation is for a local
	194	object for which we still want to do the relocation at runtime.
	195	False if we are willing to perform this relocation while building
	196	the .o file. GOTOFF does not need to be checked here because it is
	197	not pcrel. I am not sure if some of the others are ever used with
	198	pcrel, but it is easier to be safe than sorry. */
	199
	200	#define TC_FORCE_RELOCATION_LOCAL(FIX) \
	201	(GENERIC_FORCE_RELOCATION_LOCAL (FIX) \
	202	\|\| (FIX)->fx_r_type == BFD_RELOC_ARM_GOT32 \
	203	\|\| (FIX)->fx_r_type == BFD_RELOC_32 \
	204	\|\| ((FIX)->fx_addsy != NULL \
	205	&& S_IS_WEAK ((FIX)->fx_addsy)))
	206
	207	/* Force output of R_ARM_REL32 relocations against thumb function symbols.
	208	This is needed to ensure the low bit is handled correctly. */
	209	#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \
	210	(GENERIC_FORCE_RELOCATION_SUB_SAME (FIX, SEG) \
	211	\|\| THUMB_IS_FUNC ((FIX)->fx_addsy))
	212
	213	#define TC_FORCE_RELOCATION_ABS(FIX) \
	214	(((FIX)->fx_pcrel \
	215	&& (FIX)->fx_r_type != BFD_RELOC_32 \
	216	&& (FIX)->fx_r_type != BFD_RELOC_ARM_GOT32) \
	217	\|\| TC_FORCE_RELOCATION(FIX))
	218
	219	#define TC_CONS_FIX_NEW cons_fix_new_arm
	220
	221	#define MAX_MEM_ALIGNMENT_BYTES 6
	222	#define MAX_MEM_FOR_RS_ALIGN_CODE ((1 << MAX_MEM_ALIGNMENT_BYTES) - 1)
	223
	224	/* For frags in code sections we need to record whether they contain
	225	ARM code or THUMB code. This is that if they have to be aligned,
	226	they can contain the correct type of no-op instruction. */
	227	struct arm_frag_type
	228	{
	229	int thumb_mode;
	230	#ifdef OBJ_ELF
	231	/* If there is a mapping symbol at offset 0 in this frag,
	232	it will be saved in FIRST_MAP. If there are any mapping
	233	symbols in this frag, the last one will be saved in
	234	LAST_MAP. */
	235	symbolS first_map, last_map;
	236	#endif
	237	};
	238
	239	static inline int
	240	arm_min (int am_p1, int am_p2)
	241	{
	242	return am_p1 < am_p2 ? am_p1 : am_p2;
	243	}
	244
	245	#define TC_FRAG_TYPE struct arm_frag_type
	246	/* NOTE: max_chars is a local variable from frag_var / frag_variant. */
	247	#define TC_FRAG_INIT(fragp) arm_init_frag (fragp, max_chars)
	248	#define TC_ALIGN_ZERO_IS_DEFAULT 1
	249	#define HANDLE_ALIGN(fragp) arm_handle_align (fragp)
	250	/* PR gas/19276: COFF/PE segment alignment is already handled in coff_frob_section(). */
	251	#ifndef TE_PE
	252	#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) \
	253	((!(FRCHAIN)->frch_next && subseg_text_p (SEG)) \
	254	? arm_min (2, get_recorded_alignment (SEG)) : 0)
	255	#endif
	256
	257	#define md_do_align(N, FILL, LEN, MAX, LABEL) \
	258	if (FILL == NULL && (N) != 0 && ! need_pass_2 && subseg_text_p (now_seg)) \
	259	{ \
	260	arm_frag_align_code (N, MAX); \
	261	goto LABEL; \
	262	}
	263
	264	#define DWARF2_LINE_MIN_INSN_LENGTH 2
	265
	266	/* The lr register is r14. */
	267	#define DWARF2_DEFAULT_RETURN_COLUMN 14
	268
	269	/* Registers are generally saved at negative offsets to the CFA. */
	270	#define DWARF2_CIE_DATA_ALIGNMENT (-4)
	271
	272	/* State variables for IT block handling. */
	273	enum it_state
	274	{
	275	OUTSIDE_IT_BLOCK, MANUAL_IT_BLOCK, AUTOMATIC_IT_BLOCK
	276	};
	277	struct current_it
	278	{
	279	int mask;
	280	enum it_state state;
	281	int cc;
	282	int block_length;
	283	char *insn;
	284	int state_handled;
	285	int warn_deprecated;
	286	int insn_cond;
	287	};
	288
	289	#ifdef OBJ_ELF
	290	# define obj_frob_symbol(sym, punt) armelf_frob_symbol ((sym), & (punt))
	291	# define md_elf_section_change_hook() arm_elf_change_section ()
	292	# define md_elf_section_type(str, len) arm_elf_section_type (str, len)
	293	# define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_"
	294	# define TC_SEGMENT_INFO_TYPE struct arm_segment_info_type
	295
	296	/* This is not really an alignment operation, but it's something we
	297	need to do at the same time: whenever we are figuring out the
	298	alignment for data, we should check whether a $d symbol is
	299	necessary. */
	300	# define md_cons_align(nbytes) mapping_state (MAP_DATA)
	301
	302	enum mstate
	303	{
	304	MAP_UNDEFINED = 0, /* Must be zero, for seginfo in new sections. */
	305	MAP_DATA,
	306	MAP_ARM,
	307	MAP_THUMB
	308	};
	309
	310	void mapping_state (enum mstate);
	311
	312	struct arm_segment_info_type
	313	{
	314	enum mstate mapstate;
	315
	316	/* Bit N indicates that an R_ARM_NONE relocation has been output for
	317	__aeabi_unwind_cpp_prN already if set. This enables dependencies to be
	318	emitted only once per section, to save unnecessary bloat. */
	319	unsigned int marked_pr_dependency;
	320
	321	struct current_it current_it;
	322	};
	323
	324	/* We want .cfi_* pseudo-ops for generating unwind info. */
	325	#define TARGET_USE_CFIPOP 1
	326
	327	/* CFI hooks. */
	328	#define tc_regname_to_dw2regnum tc_arm_regname_to_dw2regnum
	329	#define tc_cfi_frame_initial_instructions tc_arm_frame_initial_instructions
	330
	331	#else /* Not OBJ_ELF. */
	332	#define GLOBAL_OFFSET_TABLE_NAME "__GLOBAL_OFFSET_TABLE_"
	333	#endif
	334
	335	#if defined OBJ_ELF \|\| defined OBJ_COFF
	336
	337	# define EXTERN_FORCE_RELOC 1
	338	# define tc_fix_adjustable(FIX) arm_fix_adjustable (FIX)
	339	#endif
	340
	341	#ifdef OBJ_ELF
	342	/* Values passed to md_apply_fix don't include the symbol value. */
	343	# define MD_APPLY_SYM_VALUE(FIX) arm_apply_sym_value (FIX, this_segment)
	344	#endif
	345
	346	#ifdef OBJ_COFF
	347	# define TC_VALIDATE_FIX(FIX, SEGTYPE, LABEL) arm_validate_fix (FIX)
	348	/* Values passed to md_apply_fix don't include the symbol value. */
	349	# define MD_APPLY_SYM_VALUE(FIX) 0
	350	#endif
	351
	352	#define MD_PCREL_FROM_SECTION(F,S) md_pcrel_from_section(F,S)
	353
	354	extern long md_pcrel_from_section (struct fix *, segT);
	355	extern void arm_frag_align_code (int, int);
	356	extern void arm_validate_fix (struct fix *);
	357	extern const char * elf32_arm_target_format (void);
	358	extern void arm_elf_change_section (void);
	359	extern int arm_force_relocation (struct fix *);
	360	extern void arm_cleanup (void);
	361	extern void arm_start_line_hook (void);
	362	extern void arm_frob_label (symbolS *);
	363	extern int arm_data_in_code (void);
	364	extern char * arm_canonicalize_symbol_name (char *);
	365	extern void arm_adjust_symtab (void);
	366	extern void armelf_frob_symbol (symbolS , int );
	367	extern void cons_fix_new_arm (fragS , int, int, expressionS ,
	368	bfd_reloc_code_real_type);
	369	extern void arm_init_frag (struct frag *, int);
	370	extern void arm_handle_align (struct frag *);
	371	extern bfd_boolean arm_fix_adjustable (struct fix *);
	372	extern int arm_elf_section_type (const char *, size_t);
	373	extern int tc_arm_regname_to_dw2regnum (char *regname);
	374	extern void tc_arm_frame_initial_instructions (void);
	375
	376	#ifdef TE_PE
	377
	378	#define O_secrel O_md1
	379
	380	#define TC_DWARF2_EMIT_OFFSET tc_pe_dwarf2_emit_offset
	381	void tc_pe_dwarf2_emit_offset (symbolS *, unsigned int);
	382
	383	#endif /* TE_PE */
	384
	385	#ifdef OBJ_ELF
	386	#define CONVERT_SYMBOLIC_ATTRIBUTE(name) arm_convert_symbolic_attribute (name)
	387	extern int arm_convert_symbolic_attribute (const char *);
	388	extern int arm_apply_sym_value (struct fix *, segT);
	389	#endif
	390
	391	#define tc_comment_chars arm_comment_chars
	392	extern char arm_comment_chars[];
	393
	394	#define tc_line_separator_chars arm_line_separator_chars
	395	extern char arm_line_separator_chars[];
	396
	397	#define TC_EQUAL_IN_INSN(c, s) arm_tc_equal_in_insn ((c), (s))
	398	extern bfd_boolean arm_tc_equal_in_insn (int, char *);