1 /* Declarations for stacks of tokenized Xtensa instructions.
2 Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008
3 Free Software Foundation, Inc.
5 This file is part of GAS, the GNU Assembler.
7 GAS is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
12 GAS is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GAS; see the file COPYING. If not, write to the Free
19 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
22 #ifndef XTENSA_ISTACK_H
23 #define XTENSA_ISTACK_H
25 #include "xtensa-isa.h"
28 #define MAX_INSN_ARGS 64
38 /* Literals have 1 token and no opcode.
39 Labels have 1 token and no opcode. */
41 typedef struct tinsn_struct
43 enum itype_enum insn_type
;
45 xtensa_opcode opcode
; /* Literals have an invalid opcode. */
46 bfd_boolean is_specific_opcode
;
47 bfd_boolean keep_wide
;
49 expressionS tok
[MAX_INSN_ARGS
];
50 bfd_boolean loc_directive_seen
;
51 struct dwarf2_line_info debug_line
;
53 /* This field is used for two types of special pseudo ops:
54 1. TLS-related operations. Eg: callx8.tls
57 For the tls-related operations, it will hold a tls-related opcode
58 and info to be used in a fixup. For j.l it will hold a
59 register to be used during relaxation. */
60 expressionS extra_arg
;
62 /* Filled out by relaxation_requirements: */
63 enum xtensa_relax_statesE subtype
;
66 /* Filled out by vinsn_to_insnbuf: */
73 /* tinsn_stack: This is a stack of instructions to be placed. */
75 typedef struct tinsn_stack
78 TInsn insn
[MAX_ISTACK
];
82 void istack_init (IStack
*);
83 bfd_boolean
istack_empty (IStack
*);
84 bfd_boolean
istack_full (IStack
*);
85 TInsn
*istack_top (IStack
*);
86 void istack_push (IStack
*, TInsn
*);
87 TInsn
*istack_push_space (IStack
*);
88 void istack_pop (IStack
*);
90 /* TInsn utilities. */
91 void tinsn_init (TInsn
*);
94 /* vliw_insn: bundles of TInsns. */
96 typedef struct vliw_insn
100 unsigned int inside_bundle
;
101 TInsn slots
[MAX_SLOTS
];
102 xtensa_insnbuf insnbuf
;
103 xtensa_insnbuf slotbuf
[MAX_SLOTS
];
106 #endif /* !XTENSA_ISTACK_H */