mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
f8d98f1095
Fix to decode grouped AVX with VEX pp bits which should be handled as same as last-prefixes. This fixes below warnings in posttest with CONFIG_CRYPTO_SHA1_SSSE3=y. Warning: arch/x86/tools/test_get_len found difference at <sha1_transform_avx>:ffffffff810d5fc0 Warning: ffffffff810d6069: c5 f9 73 de 04 vpsrldq $0x4,%xmm6,%xmm0 Warning: objdump says 5 bytes, but insn_get_length() says 4 ... With this change, test_get_len can decode it correctly. $ arch/x86/tools/test_get_len -v -y ffffffff810d6069: c5 f9 73 de 04 vpsrldq $0x4,%xmm6,%xmm0 Succeed: decoded and checked 1 instructions Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: yrl.pp-manager.tt@hitachi.com Link: http://lkml.kernel.org/r/20120210053340.30429.73410.stgit@localhost.localdomain Signed-off-by: Ingo Molnar <mingo@elte.hu>
97 lines
2.6 KiB
C
97 lines
2.6 KiB
C
/*
|
|
* x86 instruction attribute tables
|
|
*
|
|
* Written by Masami Hiramatsu <mhiramat@redhat.com>
|
|
*
|
|
* 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];
|
|
}
|
|
|