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- /* Declarations for stacks of tokenized Xtensa instructions.
- Copyright (C) 2003-2022 Free Software Foundation, Inc.
- This file is part of GAS, the GNU Assembler.
- GAS is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3, or (at your option)
- any later version.
- GAS is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with GAS; see the file COPYING. If not, write to the Free
- Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
- 02110-1301, USA. */
- #ifndef XTENSA_ISTACK_H
- #define XTENSA_ISTACK_H
- #include "xtensa-isa.h"
- #define MAX_ISTACK 12
- #define MAX_INSN_ARGS 64
- enum itype_enum
- {
- ITYPE_INSN,
- ITYPE_LITERAL,
- ITYPE_LABEL
- };
- /* Literals have 1 token and no opcode.
- Labels have 1 token and no opcode. */
- typedef struct tinsn_struct
- {
- enum itype_enum insn_type;
- xtensa_opcode opcode; /* Literals have an invalid opcode. */
- bool is_specific_opcode;
- bool keep_wide;
- int ntok;
- expressionS tok[MAX_INSN_ARGS];
- bool loc_directive_seen;
- struct dwarf2_line_info debug_line;
- /* This field is used for two types of special pseudo ops:
- 1. TLS-related operations. Eg: callx8.tls
- 2. j.l label, a2
- For the tls-related operations, it will hold a tls-related opcode
- and info to be used in a fixup. For j.l it will hold a
- register to be used during relaxation. */
- expressionS extra_arg;
- /* Filled out by relaxation_requirements: */
- enum xtensa_relax_statesE subtype;
- int literal_space;
- /* Filled out by vinsn_to_insnbuf: */
- symbolS *symbol;
- offsetT offset;
- fragS *literal_frag;
- } TInsn;
- /* tinsn_stack: This is a stack of instructions to be placed. */
- typedef struct tinsn_stack
- {
- int ninsn;
- TInsn insn[MAX_ISTACK];
- } IStack;
- void istack_init (IStack *);
- bool istack_empty (IStack *);
- bool istack_full (IStack *);
- TInsn *istack_top (IStack *);
- void istack_push (IStack *, TInsn *);
- TInsn *istack_push_space (IStack *);
- void istack_pop (IStack *);
- /* TInsn utilities. */
- void tinsn_init (TInsn *);
- /* vliw_insn: bundles of TInsns. */
- typedef struct vliw_insn
- {
- xtensa_format format;
- int num_slots;
- unsigned int inside_bundle;
- TInsn slots[MAX_SLOTS];
- xtensa_insnbuf insnbuf;
- xtensa_insnbuf slotbuf[MAX_SLOTS];
- } vliw_insn;
- #endif /* !XTENSA_ISTACK_H */
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