[deliverable/binutils-gdb.git] / gas / config / xtensa-istack.h

/* Declarations for stacks of tokenized Xtensa instructions.
   Copyright (C) 2003, 2004, 2007 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 2, 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 XTENSA_ISTACK_H
#define XTENSA_ISTACK_H

#include "xtensa-isa.h"

#define MAX_ISTACK 12
#define MAX_INSN_ARGS 10

enum itype_enum
{
  ITYPE_INSN,
  ITYPE_LITERAL,
  ITYPE_LABEL
};


/* Literals have 1 token and no opcode.
   Labels have 1 token and no opcode.  */

typedef struct tinsn_struct
{
  enum itype_enum insn_type;

  xtensa_opcode opcode;	/* Literals have an invalid opcode.  */
  bfd_boolean is_specific_opcode;
  bfd_boolean keep_wide;
  int ntok;
  expressionS tok[MAX_INSN_ARGS];
  unsigned linenum;

  /* Filled out by relaxation_requirements:  */
  enum xtensa_relax_statesE subtype;
  int literal_space;
  /* Filled out by vinsn_to_insnbuf:  */
  symbolS *symbol;
  offsetT offset;
  fragS *literal_frag;
} TInsn;


/* tinsn_stack:  This is a stack of instructions to  be placed.  */

typedef struct tinsn_stack
{
  int ninsn;
  TInsn insn[MAX_ISTACK];
} IStack;


void istack_init (IStack *);
bfd_boolean istack_empty (IStack *);
bfd_boolean istack_full (IStack *);
TInsn *istack_top (IStack *);
void istack_push (IStack *, TInsn *);
TInsn *istack_push_space (IStack *);
void istack_pop (IStack *);

/* TInsn utilities.  */
void tinsn_init (TInsn *);


/* vliw_insn: bundles of TInsns.  */

typedef struct vliw_insn
{
  xtensa_format format;
  int num_slots;
  unsigned int inside_bundle;
  TInsn slots[MAX_SLOTS];
  xtensa_insnbuf insnbuf;
  xtensa_insnbuf slotbuf[MAX_SLOTS];
} vliw_insn;

#endif /* !XTENSA_ISTACK_H */
Commit	Line	Data
	1	/* Declarations for stacks of tokenized Xtensa instructions.
	2	Copyright (C) 2003, 2004, 2007 Free Software Foundation, Inc.
	3
	4	This file is part of GAS, the GNU Assembler.
	5
	6	GAS is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
	8	the Free Software Foundation; either version 2, or (at your option)
	9	any later version.
	10
	11	GAS is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with GAS; see the file COPYING. If not, write to the Free
	18	Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
	19	02110-1301, USA. */
	20
	21	#ifndef XTENSA_ISTACK_H
	22	#define XTENSA_ISTACK_H
	23
	24	#include "xtensa-isa.h"
	25
	26	#define MAX_ISTACK 12
	27	#define MAX_INSN_ARGS 10
	28
	29	enum itype_enum
	30	{
	31	ITYPE_INSN,
	32	ITYPE_LITERAL,
	33	ITYPE_LABEL
	34	};
	35
	36
	37	/* Literals have 1 token and no opcode.
	38	Labels have 1 token and no opcode. */
	39
	40	typedef struct tinsn_struct
	41	{
	42	enum itype_enum insn_type;
	43
	44	xtensa_opcode opcode; /* Literals have an invalid opcode. */
	45	bfd_boolean is_specific_opcode;
	46	bfd_boolean keep_wide;
	47	int ntok;
	48	expressionS tok[MAX_INSN_ARGS];
	49	unsigned linenum;
	50
	51	/* Filled out by relaxation_requirements: */
	52	enum xtensa_relax_statesE subtype;
	53	int literal_space;
	54	/* Filled out by vinsn_to_insnbuf: */
	55	symbolS *symbol;
	56	offsetT offset;
	57	fragS *literal_frag;
	58	} TInsn;
	59
	60
	61	/* tinsn_stack: This is a stack of instructions to be placed. */
	62
	63	typedef struct tinsn_stack
	64	{
	65	int ninsn;
	66	TInsn insn[MAX_ISTACK];
	67	} IStack;
	68
	69
	70	void istack_init (IStack *);
	71	bfd_boolean istack_empty (IStack *);
	72	bfd_boolean istack_full (IStack *);
	73	TInsn istack_top (IStack );
	74	void istack_push (IStack , TInsn );
	75	TInsn istack_push_space (IStack );
	76	void istack_pop (IStack *);
	77
	78	/* TInsn utilities. */
	79	void tinsn_init (TInsn *);
	80
	81
	82	/* vliw_insn: bundles of TInsns. */
	83
	84	typedef struct vliw_insn
	85	{
	86	xtensa_format format;
	87	int num_slots;
	88	unsigned int inside_bundle;
	89	TInsn slots[MAX_SLOTS];
	90	xtensa_insnbuf insnbuf;
	91	xtensa_insnbuf slotbuf[MAX_SLOTS];
	92	} vliw_insn;
	93
	94	#endif /* !XTENSA_ISTACK_H */