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/* GAS cgen support.

   Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2005, 2007, 2011

   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 */