inat.c

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/*
 * x86 instruction attribute tables
 *
 * Written by Masami Hiramatsu <[email protected]>
 *
 * This program 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 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 */
#include <asm/insn.h>

/* Attribute tables are generated from opcode map */
#include "inat-tables.c"

/* Attribute search APIs */
insn_attr_t inat_get_opcode_attribute(insn_byte_t opcode)
{
    return inat_primary_table[opcode];
}

int inat_get_last_prefix_id(insn_byte_t last_pfx)
{
    insn_attr_t lpfx_attr;

    lpfx_attr = inat_get_opcode_attribute(last_pfx);
    return inat_last_prefix_id(lpfx_attr);
}

insn_attr_t inat_get_escape_attribute(insn_byte_t opcode, int lpfx_id,
                      insn_attr_t esc_attr)
{
    const insn_attr_t *table;
    int n;

    n = inat_escape_id(esc_attr);

    table = inat_escape_tables[n][0];
    if (!table)
        return 0;
    if (inat_has_variant(table[opcode]) && lpfx_id) {
        table = inat_escape_tables[n][lpfx_id];
        if (!table)
            return 0;
    }
    return table[opcode];
}

insn_attr_t inat_get_group_attribute(insn_byte_t modrm, int lpfx_id,
                     insn_attr_t grp_attr)
{
    const insn_attr_t *table;
    int n;

    n = inat_group_id(grp_attr);

    table = inat_group_tables[n][0];
    if (!table)
        return inat_group_common_attribute(grp_attr);
    if (inat_has_variant(table[X86_MODRM_REG(modrm)]) && lpfx_id) {
        table = inat_group_tables[n][lpfx_id];
        if (!table)
            return inat_group_common_attribute(grp_attr);
    }
    return table[X86_MODRM_REG(modrm)] |
           inat_group_common_attribute(grp_attr);
}

insn_attr_t inat_get_avx_attribute(insn_byte_t opcode, insn_byte_t vex_m,
                   insn_byte_t vex_p)
{
    const insn_attr_t *table;
    if (vex_m > X86_VEX_M_MAX || vex_p > INAT_LSTPFX_MAX)
        return 0;
    /* At first, this checks the master table */
    table = inat_avx_tables[vex_m][0];
    if (!table)
        return 0;
    if (!inat_is_group(table[opcode]) && vex_p) {
        /* If this is not a group, get attribute directly */
        table = inat_avx_tables[vex_m][vex_p];
        if (!table)
            return 0;
    }
    return table[opcode];
}