/* Declarations for stacks of tokenized Xtensa instructions. Copyright (C) 2003-2018 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. */ bfd_boolean is_specific_opcode; bfd_boolean keep_wide; int ntok; expressionS tok[MAX_INSN_ARGS]; bfd_boolean 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 *); bfd_boolean istack_empty (IStack *); bfd_boolean 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 */