mirror of https://gitee.com/openkylin/linux.git
84 lines
1.9 KiB
C
84 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* x86 instruction attribute tables
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*
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* Written by Masami Hiramatsu <mhiramat@redhat.com>
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*/
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#include <asm/insn.h>
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/* Attribute tables are generated from opcode map */
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#include "inat-tables.c"
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/* Attribute search APIs */
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insn_attr_t inat_get_opcode_attribute(insn_byte_t opcode)
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{
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return inat_primary_table[opcode];
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}
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int inat_get_last_prefix_id(insn_byte_t last_pfx)
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{
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insn_attr_t lpfx_attr;
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lpfx_attr = inat_get_opcode_attribute(last_pfx);
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return inat_last_prefix_id(lpfx_attr);
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}
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insn_attr_t inat_get_escape_attribute(insn_byte_t opcode, int lpfx_id,
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insn_attr_t esc_attr)
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{
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const insn_attr_t *table;
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int n;
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n = inat_escape_id(esc_attr);
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table = inat_escape_tables[n][0];
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if (!table)
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return 0;
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if (inat_has_variant(table[opcode]) && lpfx_id) {
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table = inat_escape_tables[n][lpfx_id];
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if (!table)
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return 0;
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}
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return table[opcode];
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}
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insn_attr_t inat_get_group_attribute(insn_byte_t modrm, int lpfx_id,
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insn_attr_t grp_attr)
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{
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const insn_attr_t *table;
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int n;
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n = inat_group_id(grp_attr);
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table = inat_group_tables[n][0];
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if (!table)
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return inat_group_common_attribute(grp_attr);
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if (inat_has_variant(table[X86_MODRM_REG(modrm)]) && lpfx_id) {
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table = inat_group_tables[n][lpfx_id];
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if (!table)
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return inat_group_common_attribute(grp_attr);
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}
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return table[X86_MODRM_REG(modrm)] |
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inat_group_common_attribute(grp_attr);
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}
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insn_attr_t inat_get_avx_attribute(insn_byte_t opcode, insn_byte_t vex_m,
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insn_byte_t vex_p)
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{
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const insn_attr_t *table;
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if (vex_m > X86_VEX_M_MAX || vex_p > INAT_LSTPFX_MAX)
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return 0;
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/* At first, this checks the master table */
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table = inat_avx_tables[vex_m][0];
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if (!table)
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return 0;
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if (!inat_is_group(table[opcode]) && vex_p) {
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/* If this is not a group, get attribute directly */
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table = inat_avx_tables[vex_m][vex_p];
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if (!table)
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return 0;
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}
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return table[opcode];
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}
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