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/* GAS cgen support.
Copyright (C) 1998-2020 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 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 GAS_CGEN_H
#define GAS_CGEN_H
/* Opcode table handle. */
extern CGEN_CPU_DESC gas_cgen_cpu_desc;
/* Maximum number of fixups in an insn.
If you need to change this, allow target to override and do so there. */
#ifndef GAS_CGEN_MAX_FIXUPS
#define GAS_CGEN_MAX_FIXUPS 3
#endif
/* Struct defining result of gas_cgen_finish_insn. */
typedef struct
{
/* Frag containing the insn */
fragS * frag;
/* Address of insn in frag. */
char * addr;
/* Number of fixups this insn has. */
int num_fixups;
/* Array of fixups. */
fixS * fixups[GAS_CGEN_MAX_FIXUPS];
} finished_insnS;
/* Callback for operand parsing.
The result is an error message or NULL for success.
The parsed value is stored in the bfd_vma *. */
extern const char * gas_cgen_parse_operand
(CGEN_CPU_DESC, enum cgen_parse_operand_type,
const char **, int, int, enum cgen_parse_operand_result *,
bfd_vma *);
/* Call this from md_assemble to initialize the assembler callback. */
extern void gas_cgen_init_parse (void);
/* Routines and macros for saving fixup chains. */
extern void gas_cgen_save_fixups (int);
extern void gas_cgen_restore_fixups (int);
extern void gas_cgen_swap_fixups (int);
extern void gas_cgen_initialize_saved_fixups_array (void);
#define MAX_SAVED_FIXUP_CHAINS 50
/* Add a register to the assembler's hash table.
This makes lets GAS parse registers for us.
??? This isn't currently used, but it could be in the future. */
extern void cgen_asm_record_register (char *, int);
/* After CGEN_SYM (assemble_insn) is done, this is called to
output the insn and record any fixups. */
extern void gas_cgen_finish_insn (const CGEN_INSN *,
CGEN_INSN_BYTES_PTR, unsigned int,
int, finished_insnS *);
/* Record a fixup. */
extern fixS * gas_cgen_record_fixup (fragS *, int, const CGEN_INSN *,
int, const CGEN_OPERAND *, int,
symbolS *, offsetT);
extern fixS * gas_cgen_record_fixup_exp (fragS *, int, const CGEN_INSN *,
int, const CGEN_OPERAND *, int,
expressionS *);
extern bfd_reloc_code_real_type gas_cgen_pcrel_r_type (bfd_reloc_code_real_type);
/* md_apply_fix handler. */
extern void gas_cgen_md_apply_fix (fixS *, valueT *, segT);
/* tc_gen_reloc handler. */
extern arelent *gas_cgen_tc_gen_reloc (asection *, fixS *);
/* Target supplied routine to lookup a reloc. */
extern bfd_reloc_code_real_type
md_cgen_lookup_reloc (const CGEN_INSN *, const CGEN_OPERAND *, fixS *);
/* Optional target supplied routine to record a fixup for an expression. */
extern fixS *
md_cgen_record_fixup_exp (fragS *, int, const CGEN_INSN *, int,
const CGEN_OPERAND *, int, expressionS *);
extern void gas_cgen_md_operand (expressionS *);
/* Perform any cgen specific initialisation for gas. */
extern void gas_cgen_begin (void);
#endif /* GAS_CGEN_H */
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