[thirdparty/binutils-gdb.git] / gas / config / tc-nds32.h

/* tc-nds32.h -- Header file for tc-nds32.c.
   Copyright (C) 2012-2021 Free Software Foundation, Inc.
   Contributed by Andes Technology Corporation.

   This file is part of GAS.

   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.  */

#ifndef TC_NDS32
#define TC_NDS32

#include "bfd_stdint.h"

/* Enum mapping symbol.  */
enum mstate
{
  MAP_UNDEFINED = 0,	/* Must be zero, for seginfo in new sections.  */
  MAP_DATA,
  MAP_CODE,
};
#define TC_SEGMENT_INFO_TYPE struct nds32_segment_info_type

/* For mapping symbol.  */
struct nds32_segment_info_type
{
  enum mstate mapstate;
};

#define LISTING_HEADER \
  (target_big_endian ? "NDS32 GAS" : "NDS32 GAS Little Endian")

/* The target BFD architecture.  */
#define TARGET_ARCH		bfd_arch_nds32

/* mapping to mach_table[5] */
#define ISA_V1      bfd_mach_n1h
#define ISA_V2      bfd_mach_n1h_v2
#define ISA_V3      bfd_mach_n1h_v3
#define ISA_V3M     bfd_mach_n1h_v3m

/* Default to big endian. Please note that for Andes architecture,
   instructions are always in big-endian format.  */
#ifndef TARGET_BYTES_BIG_ENDIAN
#define TARGET_BYTES_BIG_ENDIAN	1
#endif

/* as.c.  */
/* Extend GAS command line option handling capability.  */
extern int nds32_parse_option (int, const char *);
extern void nds32_after_parse_args (void);
/* The endianness of the target format may change based on command
   line arguments.  */
extern const char * nds32_target_format (void);

#define md_parse_option(optc, optarg)	nds32_parse_option (optc, optarg)
#define md_after_parse_args()		nds32_after_parse_args ()
#define TARGET_FORMAT nds32_target_format()

/* expr.c */
extern int nds32_parse_name (char const *, expressionS *, enum expr_mode, char *);
extern bfd_boolean nds32_allow_local_subtract (expressionS *, expressionS *, segT);
#define md_parse_name(name, exprP, mode, nextcharP) \
	nds32_parse_name (name, exprP, mode, nextcharP)
#define md_allow_local_subtract(lhs,rhs,sect)	nds32_allow_local_subtract (lhs, rhs, sect)

/* dwarf2dbg.c.  */
#define DWARF2_USE_FIXED_ADVANCE_PC		1

/* write.c.  */
extern long nds32_pcrel_from_section (struct fix *, segT);
extern bfd_boolean nds32_fix_adjustable (struct fix *);
extern void nds32_frob_file (void);
extern void nds32_post_relax_hook (void);
extern void nds32_frob_file_before_fix (void);
extern void elf_nds32_final_processing (void);
extern int nds32_validate_fix_sub (struct fix *, segT);
extern int nds32_force_relocation (struct fix *);
extern void nds32_set_section_relocs (asection *, arelent ** , unsigned int);

/* Fill in rs_align_code fragments.  TODO: Review this.  */
extern void nds32_handle_align (fragS *);
extern int nds32_relax_frag (segT, fragS *, long);
extern int tc_nds32_regname_to_dw2regnum (char *);
extern void tc_nds32_frame_initial_instructions (void);

#define MD_PCREL_FROM_SECTION(fix, sect)	nds32_pcrel_from_section (fix, sect)
#define TC_FINALIZE_SYMS_BEFORE_SIZE_SEG	0
#define tc_fix_adjustable(FIX)			nds32_fix_adjustable (FIX)
#define md_apply_fix(fixP, addn, seg)		nds32_apply_fix (fixP, addn, seg)
#define md_post_relax_hook			nds32_post_relax_hook ()
#define tc_frob_file_before_fix()		nds32_frob_file_before_fix ()
#define elf_tc_final_processing()		elf_nds32_final_processing ()
/* For DIFF relocations.  The default behavior is inconsistent with the
   asm internal document.  */
#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEC)		\
  (GENERIC_FORCE_RELOCATION_SUB_SAME (FIX, SEC)		\
   || TC_FORCE_RELOCATION (FIX))
#define TC_FORCE_RELOCATION(fix)		nds32_force_relocation (fix)
#define TC_VALIDATE_FIX_SUB(FIX,SEG)		nds32_validate_fix_sub (FIX,SEG)
#define SET_SECTION_RELOCS(sec, relocs, n)	nds32_set_section_relocs (sec, relocs, n)
/* Values passed to md_apply_fix don't include the symbol value.  */
#define MD_APPLY_SYM_VALUE(FIX)			0
#define HANDLE_ALIGN(f)				nds32_handle_align (f)
#undef DIFF_EXPR_OK				/* They should be fixed in linker.  */
#define md_relax_frag(segment, fragP, stretch)	nds32_relax_frag (segment, fragP, stretch)
#define WORKING_DOT_WORD			/* We don't need to handle .word strangely.  */
/* Using to chain fixup with previous fixup.  */
#define TC_FIX_TYPE struct fix *
#define TC_INIT_FIX_DATA(fixP)		\
  do					\
    {					\
      fixP->tc_fix_data = NULL;		\
    }					\
  while (0)

/* read.c.  */
/* Extend GAS macro handling capability.  */
extern void nds32_macro_start (void);
extern void nds32_macro_end (void);
extern void nds32_macro_info (void *);
extern void nds32_start_line_hook (void);
extern void nds32_elf_section_change_hook (void);
extern void md_begin (void);
extern void md_end (void);
extern int nds32_start_label (int, int);
extern void nds32_cleanup (void);
extern void nds32_flush_pending_output (void);
extern void nds32_cons_align (int);
extern void nds32_check_label (symbolS *);
extern void nds32_frob_label (symbolS *);
extern void nds32_pre_do_align (int, char *, int, int);
extern void nds32_do_align (int);

#define md_macro_start()			nds32_macro_start ()
#define md_macro_end()				nds32_macro_end ()
#define md_macro_info(args)			nds32_macro_info (args)
#define TC_START_LABEL(STR, NUL_CHAR, NEXT_CHAR)	\
  (NEXT_CHAR == ':' && nds32_start_label (0, 0))
#define tc_check_label(label)			nds32_check_label (label)
#define tc_frob_label(label)			nds32_frob_label (label)
#define md_end					md_end
#define md_start_line_hook()			nds32_start_line_hook ()
#define md_cons_align(n)			nds32_cons_align (n)
/* COLE: TODO: Review md_do_align.  */
#define md_do_align(N, FILL, LEN, MAX, LABEL)	\
  nds32_pre_do_align (N, FILL, LEN, MAX);	\
  if ((N) > 1 && (subseg_text_p (now_seg)	\
      || strncmp (now_seg->name, ".gcc_except_table", sizeof(".gcc_except_table") - 1) == 0)) \
    nds32_do_align (N);				\
  goto LABEL;
#define md_elf_section_change_hook()		nds32_elf_section_change_hook ()
#define md_flush_pending_output()		nds32_flush_pending_output ()
#define md_cleanup()				nds32_cleanup ()
#define LOCAL_LABELS_FB				1 /* Permit temporary numeric labels.  */

/* frags.c.  */

enum FRAG_ATTR
{
  NDS32_FRAG_RELAXABLE  = 0x1,
  NDS32_FRAG_RELAXED = 0x2,
  NDS32_FRAG_BRANCH = 0x4,
  NDS32_FRAG_LABEL = 0x8,
  NDS32_FRAG_FINAL = 0x10,
  NDS32_FRAG_RELAXABLE_BRANCH = 0x20,
  NDS32_FRAG_ALIGN = 0x40
};

struct nds32_frag_type
{
  relax_substateT flag;
  struct nds32_opcode *opcode;
  uint32_t insn;
  /* To Save previous label fixup if existence.  */
  struct fix *fixup;
};

extern void nds32_frag_init (fragS *);

#define TC_FRAG_TYPE				struct nds32_frag_type
#define TC_FRAG_INIT(fragP, max_bytes)		nds32_frag_init (fragP)

/* CFI directive.  */
extern void nds32_elf_frame_initial_instructions (void);
extern int tc_nds32_regname_to_dw2regnum (char *);

#define TARGET_USE_CFIPOP			1
#define DWARF2_DEFAULT_RETURN_COLUMN		30
#define DWARF2_CIE_DATA_ALIGNMENT		-4
#define DWARF2_LINE_MIN_INSN_LENGTH		2

#define tc_regname_to_dw2regnum			tc_nds32_regname_to_dw2regnum
#define tc_cfi_frame_initial_instructions	tc_nds32_frame_initial_instructions

/* COLE: TODO: Review These. They seem to be obsoleted.  */
#if 1
#define TC_RELOC_RTSYM_LOC_FIXUP(FIX)				\
   ((FIX)->fx_addsy == NULL					\
    || (! S_IS_EXTERNAL ((FIX)->fx_addsy)			\
	&& ! S_IS_WEAK ((FIX)->fx_addsy)			\
	&& S_IS_DEFINED ((FIX)->fx_addsy)			\
	&& ! S_IS_COMMON ((FIX)->fx_addsy)))
#define TC_HANDLES_FX_DONE
/* This arranges for gas/write.c to not apply a relocation if
   obj_fix_adjustable() says it is not adjustable.  */
#define TC_FIX_ADJUSTABLE(fixP) obj_fix_adjustable (fixP)
#endif

/* Because linker may relax the code, assemble-time expression
   optimization is not allowed.  */
#define md_allow_eh_opt 0

/* For nds32 relax.  */
enum nds32_br_range
{
  BR_RANGE_S256 = 0,
  BR_RANGE_S16K,
  BR_RANGE_S64K,
  BR_RANGE_S16M,
  BR_RANGE_U4G,
  BR_RANGE_NUM
};

enum nds32_ramp
{
  NDS32_CREATE_LABEL = 1,
  NDS32_RELAX = (1 << 1), /* Obsolete in the future.  */
  NDS32_ORIGIN = (1 << 2),
  NDS32_INSN16 = (1 << 3),
  NDS32_PTR = (1 << 4),
  NDS32_ABS = (1 << 5),
  NDS32_HINT = (1 << 6),
  NDS32_FIX = (1 << 7),
  NDS32_ADDEND = (1 << 8),
  NDS32_SYM = (1 << 9),
  NDS32_PCREL = (1 << 10),
  NDS32_PTR_PATTERN = (1 << 11),
  NDS32_PTR_MULTIPLE = (1 << 12),
  NDS32_GROUP = (1 << 13),
  NDS32_SYM_DESC_MEM = (1 << 14)
};

typedef struct nds32_relax_fixup_info
{
  int offset;
  int size;
  /* Reverse branch has to jump to the end of instruction pattern.  */
  int ramp;
  enum bfd_reloc_code_real r_type;
} nds32_relax_fixup_info_t;

typedef struct nds32_cond_field
{
  int offset;
  int bitpos; /* Register position.  */
  int bitmask; /* Number of register bits.  */
  bfd_boolean signed_extend;
} nds32_cond_field_t;

/* The max relaxation pattern is 20-bytes including the nop.  */
#define NDS32_MAXCHAR 20
/* In current, the max extended number of instruction for one pseudo instruction
   is 6, but its number of relocation may be 12.  */
#define MAX_RELAX_NUM 6
#define MAX_RELAX_FIX 12

typedef struct nds32_relax_info
{
  /* Opcode for the instruction.  */
  const char *opcode;
  enum nds32_br_range br_range;
  nds32_cond_field_t cond_field[MAX_RELAX_NUM]; /* TODO: Reuse nds32_field?  */
  /* Code sequences for different branch range.  */
  uint32_t relax_code_seq[BR_RANGE_NUM][MAX_RELAX_NUM];
  nds32_cond_field_t relax_code_condition[BR_RANGE_NUM][MAX_RELAX_NUM];
  unsigned int relax_code_size[BR_RANGE_NUM];
  int relax_branch_isize[BR_RANGE_NUM];
  nds32_relax_fixup_info_t relax_fixup[BR_RANGE_NUM][MAX_RELAX_FIX];
} relax_info_t;

enum nds32_relax_hint_type
{
  NDS32_RELAX_HINT_NONE = 0,
  NDS32_RELAX_HINT_LA_FLSI,
  NDS32_RELAX_HINT_LALS,
  NDS32_RELAX_HINT_LA_PLT,
  NDS32_RELAX_HINT_LA_GOT,
  NDS32_RELAX_HINT_LA_GOTOFF,
  NDS32_RELAX_HINT_TLS_START = 0x100,
  NDS32_RELAX_HINT_TLS_LE_LS,
  NDS32_RELAX_HINT_TLS_IE_LS,
  NDS32_RELAX_HINT_TLS_IE_LA,
  NDS32_RELAX_HINT_TLS_IEGP_LA,
  NDS32_RELAX_HINT_TLS_DESC_LS,
};

struct nds32_relax_hint_table
{
  enum nds32_relax_hint_type main_type;
  unsigned int relax_code_size;
  uint32_t relax_code_seq[MAX_RELAX_NUM];
  nds32_relax_fixup_info_t relax_fixup[MAX_RELAX_FIX];
};

#endif /* TC_NDS32 */
Commit	Line	Data
35c08157	1	/* tc-nds32.h -- Header file for tc-nds32.c.
250d07de	2	Copyright (C) 2012-2021 Free Software Foundation, Inc.
35c08157 KLC	3	Contributed by Andes Technology Corporation.
	4
	5	This file is part of GAS.
	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 3, 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 the Free
	19	Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
	20	02110-1301, USA. */
	21
	22	#ifndef TC_NDS32
	23	#define TC_NDS32
	24
	25	#include "bfd_stdint.h"
	26
fbaf61ad NC	27	/* Enum mapping symbol. */
	28	enum mstate
	29	{
	30	MAP_UNDEFINED = 0, /* Must be zero, for seginfo in new sections. */
	31	MAP_DATA,
	32	MAP_CODE,
	33	};
	34	#define TC_SEGMENT_INFO_TYPE struct nds32_segment_info_type
	35
	36	/* For mapping symbol. */
	37	struct nds32_segment_info_type
	38	{
	39	enum mstate mapstate;
	40	};
	41
35c08157 KLC	42	#define LISTING_HEADER \
	43	(target_big_endian ? "NDS32 GAS" : "NDS32 GAS Little Endian")
	44
	45	/* The target BFD architecture. */
	46	#define TARGET_ARCH bfd_arch_nds32
	47
	48	/* mapping to mach_table[5] */
	49	#define ISA_V1 bfd_mach_n1h
	50	#define ISA_V2 bfd_mach_n1h_v2
	51	#define ISA_V3 bfd_mach_n1h_v3
	52	#define ISA_V3M bfd_mach_n1h_v3m
	53
	54	/* Default to big endian. Please note that for Andes architecture,
	55	instructions are always in big-endian format. */
	56	#ifndef TARGET_BYTES_BIG_ENDIAN
	57	#define TARGET_BYTES_BIG_ENDIAN 1
	58	#endif
	59
35c08157 KLC	60	/* as.c. */
35c08157 KLC	61	/* Extend GAS command line option handling capability. */
17b9d67d	62	extern int nds32_parse_option (int, const char *);
35c08157 KLC	63	extern void nds32_after_parse_args (void);
	64	/* The endianness of the target format may change based on command
	65	line arguments. */
	66	extern const char * nds32_target_format (void);
	67
	68	#define md_parse_option(optc, optarg) nds32_parse_option (optc, optarg)
	69	#define md_after_parse_args() nds32_after_parse_args ()
	70	#define TARGET_FORMAT nds32_target_format()
	71
	72	/* expr.c */
	73	extern int nds32_parse_name (char const , expressionS , enum expr_mode, char *);
	74	extern bfd_boolean nds32_allow_local_subtract (expressionS , expressionS , segT);
	75	#define md_parse_name(name, exprP, mode, nextcharP) \
	76	nds32_parse_name (name, exprP, mode, nextcharP)
	77	#define md_allow_local_subtract(lhs,rhs,sect) nds32_allow_local_subtract (lhs, rhs, sect)
	78
	79	/* dwarf2dbg.c. */
	80	#define DWARF2_USE_FIXED_ADVANCE_PC 1
	81
	82	/* write.c. */
	83	extern long nds32_pcrel_from_section (struct fix *, segT);
	84	extern bfd_boolean nds32_fix_adjustable (struct fix *);
	85	extern void nds32_frob_file (void);
	86	extern void nds32_post_relax_hook (void);
	87	extern void nds32_frob_file_before_fix (void);
	88	extern void elf_nds32_final_processing (void);
	89	extern int nds32_validate_fix_sub (struct fix *, segT);
	90	extern int nds32_force_relocation (struct fix *);
	91	extern void nds32_set_section_relocs (asection , arelent * , unsigned int);
	92
	93	/* Fill in rs_align_code fragments. TODO: Review this. */
	94	extern void nds32_handle_align (fragS *);
	95	extern int nds32_relax_frag (segT, fragS *, long);
	96	extern int tc_nds32_regname_to_dw2regnum (char *);
	97	extern void tc_nds32_frame_initial_instructions (void);
	98
	99	#define MD_PCREL_FROM_SECTION(fix, sect) nds32_pcrel_from_section (fix, sect)
	100	#define TC_FINALIZE_SYMS_BEFORE_SIZE_SEG 0
	101	#define tc_fix_adjustable(FIX) nds32_fix_adjustable (FIX)
	102	#define md_apply_fix(fixP, addn, seg) nds32_apply_fix (fixP, addn, seg)
	103	#define md_post_relax_hook nds32_post_relax_hook ()
	104	#define tc_frob_file_before_fix() nds32_frob_file_before_fix ()
	105	#define elf_tc_final_processing() elf_nds32_final_processing ()
	106	/* For DIFF relocations. The default behavior is inconsistent with the
	107	asm internal document. */
	108	#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEC) \
91cb9803 AM	109	(GENERIC_FORCE_RELOCATION_SUB_SAME (FIX, SEC) \
91cb9803 AM	110	\|\| TC_FORCE_RELOCATION (FIX))
35c08157 KLC	111	#define TC_FORCE_RELOCATION(fix) nds32_force_relocation (fix)
	112	#define TC_VALIDATE_FIX_SUB(FIX,SEG) nds32_validate_fix_sub (FIX,SEG)
	113	#define SET_SECTION_RELOCS(sec, relocs, n) nds32_set_section_relocs (sec, relocs, n)
	114	/* Values passed to md_apply_fix don't include the symbol value. */
	115	#define MD_APPLY_SYM_VALUE(FIX) 0
	116	#define HANDLE_ALIGN(f) nds32_handle_align (f)
	117	#undef DIFF_EXPR_OK /* They should be fixed in linker. */
	118	#define md_relax_frag(segment, fragP, stretch) nds32_relax_frag (segment, fragP, stretch)
	119	#define WORKING_DOT_WORD /* We don't need to handle .word strangely. */
	120	/* Using to chain fixup with previous fixup. */
	121	#define TC_FIX_TYPE struct fix *
	122	#define TC_INIT_FIX_DATA(fixP) \
	123	do \
	124	{ \
	125	fixP->tc_fix_data = NULL; \
	126	} \
	127	while (0)
	128
	129	/* read.c. */
	130	/* Extend GAS macro handling capability. */
	131	extern void nds32_macro_start (void);
	132	extern void nds32_macro_end (void);
	133	extern void nds32_macro_info (void *);
	134	extern void nds32_start_line_hook (void);
	135	extern void nds32_elf_section_change_hook (void);
	136	extern void md_begin (void);
	137	extern void md_end (void);
	138	extern int nds32_start_label (int, int);
	139	extern void nds32_cleanup (void);
	140	extern void nds32_flush_pending_output (void);
	141	extern void nds32_cons_align (int);
	142	extern void nds32_check_label (symbolS *);
	143	extern void nds32_frob_label (symbolS *);
	144	extern void nds32_pre_do_align (int, char *, int, int);
	145	extern void nds32_do_align (int);
	146
	147	#define md_macro_start() nds32_macro_start ()
	148	#define md_macro_end() nds32_macro_end ()
	149	#define md_macro_info(args) nds32_macro_info (args)
2e57ce7b AM	150	#define TC_START_LABEL(STR, NUL_CHAR, NEXT_CHAR) \
2e57ce7b AM	151	(NEXT_CHAR == ':' && nds32_start_label (0, 0))
35c08157 KLC	152	#define tc_check_label(label) nds32_check_label (label)
	153	#define tc_frob_label(label) nds32_frob_label (label)
	154	#define md_end md_end
	155	#define md_start_line_hook() nds32_start_line_hook ()
	156	#define md_cons_align(n) nds32_cons_align (n)
	157	/* COLE: TODO: Review md_do_align. */
	158	#define md_do_align(N, FILL, LEN, MAX, LABEL) \
	159	nds32_pre_do_align (N, FILL, LEN, MAX); \
	160	if ((N) > 1 && (subseg_text_p (now_seg) \
	161	\|\| strncmp (now_seg->name, ".gcc_except_table", sizeof(".gcc_except_table") - 1) == 0)) \
	162	nds32_do_align (N); \
	163	goto LABEL;
	164	#define md_elf_section_change_hook() nds32_elf_section_change_hook ()
	165	#define md_flush_pending_output() nds32_flush_pending_output ()
	166	#define md_cleanup() nds32_cleanup ()
	167	#define LOCAL_LABELS_FB 1 /* Permit temporary numeric labels. */
	168
	169	/* frags.c. */
1c8f6a4d	170
ea16498d KLC	171	enum FRAG_ATTR
	172	{
	173	NDS32_FRAG_RELAXABLE = 0x1,
	174	NDS32_FRAG_RELAXED = 0x2,
	175	NDS32_FRAG_BRANCH = 0x4,
	176	NDS32_FRAG_LABEL = 0x8,
	177	NDS32_FRAG_FINAL = 0x10,
	178	NDS32_FRAG_RELAXABLE_BRANCH = 0x20,
	179	NDS32_FRAG_ALIGN = 0x40
	180	};
1c8f6a4d	181
35c08157 KLC	182	struct nds32_frag_type
	183	{
	184	relax_substateT flag;
	185	struct nds32_opcode *opcode;
	186	uint32_t insn;
33eaf5de	187	/* To Save previous label fixup if existence. */
35c08157 KLC	188	struct fix *fixup;
	189	};
	190
	191	extern void nds32_frag_init (fragS *);
	192
	193	#define TC_FRAG_TYPE struct nds32_frag_type
db222310	194	#define TC_FRAG_INIT(fragP, max_bytes) nds32_frag_init (fragP)
35c08157 KLC	195
	196	/* CFI directive. */
	197	extern void nds32_elf_frame_initial_instructions (void);
	198	extern int tc_nds32_regname_to_dw2regnum (char *);
	199
	200	#define TARGET_USE_CFIPOP 1
	201	#define DWARF2_DEFAULT_RETURN_COLUMN 30
	202	#define DWARF2_CIE_DATA_ALIGNMENT -4
	203	#define DWARF2_LINE_MIN_INSN_LENGTH 2
	204
	205	#define tc_regname_to_dw2regnum tc_nds32_regname_to_dw2regnum
	206	#define tc_cfi_frame_initial_instructions tc_nds32_frame_initial_instructions
	207
	208	/* COLE: TODO: Review These. They seem to be obsoleted. */
	209	#if 1
	210	#define TC_RELOC_RTSYM_LOC_FIXUP(FIX) \
	211	((FIX)->fx_addsy == NULL \
	212	\|\| (! S_IS_EXTERNAL ((FIX)->fx_addsy) \
	213	&& ! S_IS_WEAK ((FIX)->fx_addsy) \
	214	&& S_IS_DEFINED ((FIX)->fx_addsy) \
	215	&& ! S_IS_COMMON ((FIX)->fx_addsy)))
	216	#define TC_HANDLES_FX_DONE
	217	/* This arranges for gas/write.c to not apply a relocation if
	218	obj_fix_adjustable() says it is not adjustable. */
	219	#define TC_FIX_ADJUSTABLE(fixP) obj_fix_adjustable (fixP)
	220	#endif
	221
	222	/* Because linker may relax the code, assemble-time expression
	223	optimization is not allowed. */
	224	#define md_allow_eh_opt 0
	225
	226	/* For nds32 relax. */
	227	enum nds32_br_range
	228	{
	229	BR_RANGE_S256 = 0,
	230	BR_RANGE_S16K,
	231	BR_RANGE_S64K,
	232	BR_RANGE_S16M,
	233	BR_RANGE_U4G,
	234	BR_RANGE_NUM
	235	};
	236
	237	enum nds32_ramp
	238	{
1c8f6a4d KLC	239	NDS32_CREATE_LABEL = 1,
	240	NDS32_RELAX = (1 << 1), /* Obsolete in the future. */
	241	NDS32_ORIGIN = (1 << 2),
	242	NDS32_INSN16 = (1 << 3),
	243	NDS32_PTR = (1 << 4),
	244	NDS32_ABS = (1 << 5),
	245	NDS32_HINT = (1 << 6),
	246	NDS32_FIX = (1 << 7),
	247	NDS32_ADDEND = (1 << 8),
ea16498d	248	NDS32_SYM = (1 << 9),
fbaf61ad NC	249	NDS32_PCREL = (1 << 10),
	250	NDS32_PTR_PATTERN = (1 << 11),
	251	NDS32_PTR_MULTIPLE = (1 << 12),
	252	NDS32_GROUP = (1 << 13),
	253	NDS32_SYM_DESC_MEM = (1 << 14)
35c08157 KLC	254	};
	255
	256	typedef struct nds32_relax_fixup_info
	257	{
	258	int offset;
	259	int size;
	260	/* Reverse branch has to jump to the end of instruction pattern. */
	261	int ramp;
	262	enum bfd_reloc_code_real r_type;
	263	} nds32_relax_fixup_info_t;
	264
	265	typedef struct nds32_cond_field
	266	{
	267	int offset;
	268	int bitpos; /* Register position. */
	269	int bitmask; /* Number of register bits. */
1c8f6a4d	270	bfd_boolean signed_extend;
35c08157 KLC	271	} nds32_cond_field_t;
	272
	273	/* The max relaxation pattern is 20-bytes including the nop. */
	274	#define NDS32_MAXCHAR 20
33eaf5de	275	/* In current, the max extended number of instruction for one pseudo instruction
fbaf61ad NC	276	is 6, but its number of relocation may be 12. */
fbaf61ad NC	277	#define MAX_RELAX_NUM 6
1c8f6a4d	278	#define MAX_RELAX_FIX 12
35c08157 KLC	279
	280	typedef struct nds32_relax_info
	281	{
	282	/* Opcode for the instruction. */
	283	const char *opcode;
	284	enum nds32_br_range br_range;
	285	nds32_cond_field_t cond_field[MAX_RELAX_NUM]; /* TODO: Reuse nds32_field? */
	286	/* Code sequences for different branch range. */
	287	uint32_t relax_code_seq[BR_RANGE_NUM][MAX_RELAX_NUM];
	288	nds32_cond_field_t relax_code_condition[BR_RANGE_NUM][MAX_RELAX_NUM];
1c8f6a4d	289	unsigned int relax_code_size[BR_RANGE_NUM];
35c08157	290	int relax_branch_isize[BR_RANGE_NUM];
1c8f6a4d	291	nds32_relax_fixup_info_t relax_fixup[BR_RANGE_NUM][MAX_RELAX_FIX];
35c08157 KLC	292	} relax_info_t;
35c08157 KLC	293
1c8f6a4d KLC	294	enum nds32_relax_hint_type
	295	{
	296	NDS32_RELAX_HINT_NONE = 0,
fbaf61ad NC	297	NDS32_RELAX_HINT_LA_FLSI,
	298	NDS32_RELAX_HINT_LALS,
	299	NDS32_RELAX_HINT_LA_PLT,
	300	NDS32_RELAX_HINT_LA_GOT,
	301	NDS32_RELAX_HINT_LA_GOTOFF,
	302	NDS32_RELAX_HINT_TLS_START = 0x100,
	303	NDS32_RELAX_HINT_TLS_LE_LS,
	304	NDS32_RELAX_HINT_TLS_IE_LS,
	305	NDS32_RELAX_HINT_TLS_IE_LA,
	306	NDS32_RELAX_HINT_TLS_IEGP_LA,
	307	NDS32_RELAX_HINT_TLS_DESC_LS,
1c8f6a4d KLC	308	};
	309
	310	struct nds32_relax_hint_table
35c08157	311	{
1c8f6a4d KLC	312	enum nds32_relax_hint_type main_type;
	313	unsigned int relax_code_size;
	314	uint32_t relax_code_seq[MAX_RELAX_NUM];
	315	nds32_relax_fixup_info_t relax_fixup[MAX_RELAX_FIX];
35c08157 KLC	316	};
	317
	318	#endif /* TC_NDS32 */