1 /* Declarations for stacks of tokenized Xtensa instructions.
2 Copyright (C) 2003-2021 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)
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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 64
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
];
49 bfd_boolean loc_directive_seen
;
50 struct dwarf2_line_info debug_line
;
52 /* This field is used for two types of special pseudo ops:
53 1. TLS-related operations. Eg: callx8.tls
56 For the tls-related operations, it will hold a tls-related opcode
57 and info to be used in a fixup. For j.l it will hold a
58 register to be used during relaxation. */
59 expressionS extra_arg
;
61 /* Filled out by relaxation_requirements: */
62 enum xtensa_relax_statesE subtype
;
65 /* Filled out by vinsn_to_insnbuf: */
72 /* tinsn_stack: This is a stack of instructions to be placed. */
74 typedef struct tinsn_stack
77 TInsn insn
[MAX_ISTACK
];
81 void istack_init (IStack
*);
82 bfd_boolean
istack_empty (IStack
*);
83 bfd_boolean
istack_full (IStack
*);
84 TInsn
*istack_top (IStack
*);
85 void istack_push (IStack
*, TInsn
*);
86 TInsn
*istack_push_space (IStack
*);
87 void istack_pop (IStack
*);
89 /* TInsn utilities. */
90 void tinsn_init (TInsn
*);
93 /* vliw_insn: bundles of TInsns. */
95 typedef struct vliw_insn
99 unsigned int inside_bundle
;
100 TInsn slots
[MAX_SLOTS
];
101 xtensa_insnbuf insnbuf
;
102 xtensa_insnbuf slotbuf
[MAX_SLOTS
];
105 #endif /* !XTENSA_ISTACK_H */