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

/* tc-riscv.h -- header file for tc-riscv.c.
   Copyright (C) 2011-2021 Free Software Foundation, Inc.

   Contributed by Andrew Waterman (andrew@sifive.com).
   Based on MIPS target.

   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 this program; see the file COPYING3. If not,
   see <http://www.gnu.org/licenses/>.  */

#ifndef TC_RISCV
#define TC_RISCV

#include "opcode/riscv.h"

struct frag;
struct expressionS;

#ifndef TARGET_BYTES_BIG_ENDIAN
#define TARGET_BYTES_BIG_ENDIAN 0
#endif

#define TARGET_ARCH bfd_arch_riscv

#define WORKING_DOT_WORD	1
#define LOCAL_LABELS_FB 	1

/* Symbols named FAKE_LABEL_NAME are emitted when generating DWARF, so make
   sure FAKE_LABEL_NAME is printable.  It still must be distinct from any
   real label name.  So, append a space, which other labels can't contain.  */
#define FAKE_LABEL_NAME RISCV_FAKE_LABEL_NAME
/* Changing the special character in FAKE_LABEL_NAME requires changing
   FAKE_LABEL_CHAR too.  */
#define FAKE_LABEL_CHAR RISCV_FAKE_LABEL_CHAR

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

#define md_section_align(seg,size)	(size)
#define md_undefined_symbol(name)	(0)
#define md_operand(x)

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

extern void riscv_handle_align (fragS *);
#define HANDLE_ALIGN riscv_handle_align

#define MAX_MEM_FOR_RS_ALIGN_CODE (3 + 4)

/* The ISA of the target may change based on command-line arguments.  */
#define TARGET_FORMAT riscv_target_format ()
extern const char * riscv_target_format (void);

#define md_after_parse_args() riscv_after_parse_args ()
extern void riscv_after_parse_args (void);

#define md_parse_long_option(arg) riscv_parse_long_option (arg)
extern int riscv_parse_long_option (const char *);

#define md_pre_output_hook riscv_pre_output_hook ()
extern void riscv_pre_output_hook (void);

/* Let the linker resolve all the relocs due to relaxation.  */
#define tc_fix_adjustable(fixp) 0
#define md_allow_local_subtract(l,r,s) 0

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

/* Global syms must not be resolved, to support ELF shared libraries.  */
#define EXTERN_FORCE_RELOC			\
  (OUTPUT_FLAVOR == bfd_target_elf_flavour)

/* Postpone text-section label subtraction calculation until linking, since
   linker relaxations might change the deltas.  */
#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG)	\
  (GENERIC_FORCE_RELOCATION_SUB_SAME (FIX, SEG)	\
   || ((SEG)->flags & SEC_CODE) != 0)
#define TC_FORCE_RELOCATION_SUB_LOCAL(FIX, SEG) 1
#define TC_VALIDATE_FIX_SUB(FIX, SEG) 1
#define TC_FORCE_RELOCATION_LOCAL(FIX) 1
#define DIFF_EXPR_OK 1

extern void riscv_pop_insert (void);
#define md_pop_insert()		riscv_pop_insert ()

#define TARGET_USE_CFIPOP 1

#define tc_cfi_frame_initial_instructions riscv_cfi_frame_initial_instructions
extern void riscv_cfi_frame_initial_instructions (void);

#define tc_regname_to_dw2regnum tc_riscv_regname_to_dw2regnum
extern int tc_riscv_regname_to_dw2regnum (char *);

#define DWARF2_DEFAULT_RETURN_COLUMN X_RA

/* Even on RV64, use 4-byte alignment, as F registers may be only 32 bits.  */
#define DWARF2_CIE_DATA_ALIGNMENT -4

#define elf_tc_final_processing riscv_elf_final_processing
extern void riscv_elf_final_processing (void);

/* Adjust debug_line after relaxation.  */
#define DWARF2_USE_FIXED_ADVANCE_PC 1

#define md_end riscv_md_end
#define CONVERT_SYMBOLIC_ATTRIBUTE riscv_convert_symbolic_attribute

extern void riscv_md_end (void);
extern int riscv_convert_symbolic_attribute (const char *);

#endif /* TC_RISCV */
Commit	Line	Data
e23eba97	1	/* tc-riscv.h -- header file for tc-riscv.c.
250d07de	2	Copyright (C) 2011-2021 Free Software Foundation, Inc.
e23eba97 NC	3
	4	Contributed by Andrew Waterman (andrew@sifive.com).
	5	Based on MIPS target.
	6
	7	This file is part of GAS.
	8
	9	GAS is free software; you can redistribute it and/or modify
	10	it under the terms of the GNU General Public License as published by
	11	the Free Software Foundation; either version 3, or (at your option)
	12	any later version.
	13
	14	GAS is distributed in the hope that it will be useful,
	15	but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	GNU General Public License for more details.
	18
	19	You should have received a copy of the GNU General Public License
	20	along with this program; see the file COPYING3. If not,
	21	see <http://www.gnu.org/licenses/>. */
	22
	23	#ifndef TC_RISCV
	24	#define TC_RISCV
	25
	26	#include "opcode/riscv.h"
	27
	28	struct frag;
	29	struct expressionS;
	30
fbc09e7a	31	#ifndef TARGET_BYTES_BIG_ENDIAN
e23eba97	32	#define TARGET_BYTES_BIG_ENDIAN 0
fbc09e7a	33	#endif
e23eba97 NC	34
	35	#define TARGET_ARCH bfd_arch_riscv
	36
	37	#define WORKING_DOT_WORD 1
	38	#define LOCAL_LABELS_FB 1
	39
	40	/* Symbols named FAKE_LABEL_NAME are emitted when generating DWARF, so make
	41	sure FAKE_LABEL_NAME is printable. It still must be distinct from any
	42	real label name. So, append a space, which other labels can't contain. */
884b49e3	43	#define FAKE_LABEL_NAME RISCV_FAKE_LABEL_NAME
2469b3c5 JW	44	/* Changing the special character in FAKE_LABEL_NAME requires changing
2469b3c5 JW	45	FAKE_LABEL_CHAR too. */
884b49e3	46	#define FAKE_LABEL_CHAR RISCV_FAKE_LABEL_CHAR
e23eba97 NC	47
	48	#define md_relax_frag(segment, fragp, stretch) \
	49	riscv_relax_frag (segment, fragp, stretch)
	50	extern int riscv_relax_frag (asection , struct frag , long);
	51
	52	#define md_section_align(seg,size) (size)
	53	#define md_undefined_symbol(name) (0)
	54	#define md_operand(x)
	55
d115ab8e AW	56	extern bfd_boolean riscv_frag_align_code (int);
	57	#define md_do_align(N, FILL, LEN, MAX, LABEL) \
	58	if ((N) != 0 && !(FILL) && !need_pass_2 && subseg_text_p (now_seg)) \
	59	{ \
	60	if (riscv_frag_align_code (N)) \
	61	goto LABEL; \
	62	}
	63
	64	extern void riscv_handle_align (fragS *);
	65	#define HANDLE_ALIGN riscv_handle_align
	66
e80ae190	67	#define MAX_MEM_FOR_RS_ALIGN_CODE (3 + 4)
e23eba97 NC	68
e23eba97 NC	69	/* The ISA of the target may change based on command-line arguments. */
1942a048	70	#define TARGET_FORMAT riscv_target_format ()
e23eba97 NC	71	extern const char * riscv_target_format (void);
e23eba97 NC	72
1942a048	73	#define md_after_parse_args() riscv_after_parse_args ()
e23eba97 NC	74	extern void riscv_after_parse_args (void);
	75
	76	#define md_parse_long_option(arg) riscv_parse_long_option (arg)
	77	extern int riscv_parse_long_option (const char *);
	78
1942a048	79	#define md_pre_output_hook riscv_pre_output_hook ()
45f76423 AW	80	extern void riscv_pre_output_hook (void);
45f76423 AW	81
e23eba97 NC	82	/* Let the linker resolve all the relocs due to relaxation. */
	83	#define tc_fix_adjustable(fixp) 0
	84	#define md_allow_local_subtract(l,r,s) 0
	85
	86	/* Values passed to md_apply_fix don't include symbol values. */
	87	#define MD_APPLY_SYM_VALUE(FIX) 0
	88
	89	/* Global syms must not be resolved, to support ELF shared libraries. */
	90	#define EXTERN_FORCE_RELOC \
	91	(OUTPUT_FLAVOR == bfd_target_elf_flavour)
	92
	93	/* Postpone text-section label subtraction calculation until linking, since
	94	linker relaxations might change the deltas. */
91cb9803 AM	95	#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \
	96	(GENERIC_FORCE_RELOCATION_SUB_SAME (FIX, SEG) \
	97	\|\| ((SEG)->flags & SEC_CODE) != 0)
e23eba97 NC	98	#define TC_FORCE_RELOCATION_SUB_LOCAL(FIX, SEG) 1
	99	#define TC_VALIDATE_FIX_SUB(FIX, SEG) 1
	100	#define TC_FORCE_RELOCATION_LOCAL(FIX) 1
	101	#define DIFF_EXPR_OK 1
	102
	103	extern void riscv_pop_insert (void);
	104	#define md_pop_insert() riscv_pop_insert ()
	105
	106	#define TARGET_USE_CFIPOP 1
	107
	108	#define tc_cfi_frame_initial_instructions riscv_cfi_frame_initial_instructions
	109	extern void riscv_cfi_frame_initial_instructions (void);
	110
	111	#define tc_regname_to_dw2regnum tc_riscv_regname_to_dw2regnum
	112	extern int tc_riscv_regname_to_dw2regnum (char *);
	113
e23eba97	114	#define DWARF2_DEFAULT_RETURN_COLUMN X_RA
45f76423 AW	115
	116	/* Even on RV64, use 4-byte alignment, as F registers may be only 32 bits. */
	117	#define DWARF2_CIE_DATA_ALIGNMENT -4
e23eba97 NC	118
	119	#define elf_tc_final_processing riscv_elf_final_processing
	120	extern void riscv_elf_final_processing (void);
	121
d47c3ff7 KLC	122	/* Adjust debug_line after relaxation. */
	123	#define DWARF2_USE_FIXED_ADVANCE_PC 1
	124
2dc8dd17 JW	125	#define md_end riscv_md_end
	126	#define CONVERT_SYMBOLIC_ATTRIBUTE riscv_convert_symbolic_attribute
	127
	128	extern void riscv_md_end (void);
	129	extern int riscv_convert_symbolic_attribute (const char *);
	130
e23eba97	131	#endif /* TC_RISCV */