gas/config/xtensa-istack.h

   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
  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   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
  53 typedef struct tinsn_stack
  54 {
  55   int ninsn;
  56   TInsn insn[MAX_ISTACK];
  57 } IStack;
  58
  59
  60 void         istack_init        PARAMS ((IStack *));
  61 bfd_boolean  istack_empty       PARAMS ((IStack *));
  62 bfd_boolean  istack_full        PARAMS ((IStack *));
  63 TInsn *      istack_top         PARAMS ((IStack *));
  64 void         istack_push        PARAMS ((IStack *, TInsn *));
  65 TInsn *      istack_push_space  PARAMS ((IStack *));
  66 void         istack_pop         PARAMS ((IStack *));
  67
  68 /* TInsn utilities.  */
  69 void         tinsn_init         PARAMS ((TInsn *));
  70 void         tinsn_copy         PARAMS ((TInsn *, const TInsn *));
  71 expressionS *tinsn_get_tok      PARAMS ((TInsn *, int));
  72
  73 #endif /* !XTENSA_ISTACK_H */