1/* Declarations for stacks of tokenized Xtensa instructions.
2   Copyright (C) 2003 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, 59 Temple Place - Suite 330, Boston, MA
19   02111-1307, 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 6
28
29enum 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
40typedef struct tinsn_struct
41{
42  enum itype_enum insn_type;
43
44  bfd_boolean is_specific_opcode;
45  xtensa_opcode opcode;	/* Literals have an invalid opcode.  */
46  int ntok;
47  expressionS tok[MAX_INSN_ARGS];
48} TInsn;
49
50
51/* tinsn_stack:  This is a stack of instructions to  be placed.  */
52
53typedef struct tinsn_stack
54{
55  int ninsn;
56  TInsn insn[MAX_ISTACK];
57} IStack;
58
59
60void         istack_init        PARAMS ((IStack *));
61bfd_boolean  istack_empty       PARAMS ((IStack *));
62bfd_boolean  istack_full        PARAMS ((IStack *));
63TInsn *      istack_top         PARAMS ((IStack *));
64void         istack_push        PARAMS ((IStack *, TInsn *));
65TInsn *      istack_push_space  PARAMS ((IStack *));
66void         istack_pop         PARAMS ((IStack *));
67
68/* TInsn utilities.  */
69void         tinsn_init         PARAMS ((TInsn *));
70void         tinsn_copy         PARAMS ((TInsn *, const TInsn *));
71expressionS *tinsn_get_tok      PARAMS ((TInsn *, int));
72
73#endif /* !XTENSA_ISTACK_H */
74