1 /* Declarations for stacks of tokenized Xtensa instructions.
2 Copyright (C) 2003, 2004, 2007 Free Software Foundation, Inc.
4 This file is part of GAS, the GNU Assembler.
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 3, or (at your option)
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.
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
21 #ifndef XTENSA_ISTACK_H
22 #define XTENSA_ISTACK_H
24 #include "xtensa-isa.h"
27 #define MAX_INSN_ARGS 10
37 /* Literals have 1 token and no opcode.
38 Labels have 1 token and no opcode. */
40 typedef struct tinsn_struct
42 enum itype_enum insn_type;
44 xtensa_opcode opcode; /* Literals have an invalid opcode. */
45 bfd_boolean is_specific_opcode;
46 bfd_boolean keep_wide;
48 expressionS tok[MAX_INSN_ARGS];
51 /* Filled out by relaxation_requirements: */
52 enum xtensa_relax_statesE subtype;
54 /* Filled out by vinsn_to_insnbuf: */
61 /* tinsn_stack: This is a stack of instructions to be placed. */
63 typedef struct tinsn_stack
66 TInsn insn[MAX_ISTACK];
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 *);
78 /* TInsn utilities. */
79 void tinsn_init (TInsn *);
82 /* vliw_insn: bundles of TInsns. */
84 typedef struct vliw_insn
88 unsigned int inside_bundle;
89 TInsn slots[MAX_SLOTS];
90 xtensa_insnbuf insnbuf;
91 xtensa_insnbuf slotbuf[MAX_SLOTS];
94 #endif /* !XTENSA_ISTACK_H */