linux/tools/arch/x86/lib/inat.c
Josh Poimboeuf 00a263902a perf intel-pt: Use shared x86 insn decoder
Now that there's a common version of the decoder for all tools, use it
instead of the local copy.

Also use perf's check-headers.sh script to diff the decoder files to
make sure they remain in sync with the kernel version.  Objtool has a
similar check.

Committer notes:

Had to keep this all pointing explicitely to x86 headers/files, i.e.
instead of asm/isnn.h we had to use ../include/asm/insn.h when the files
were in differemt dirs, or just replace "<asm/foo.h>" with "foo.h".

This way we continue to be able to process perf.data files with Intel PT
traces in distros other than x86.

Also fixed up the awk script paths to use $(srcdir)/tools/arch instead
or relative directories so that we keep detached tarballs (make help |
grep perf) working.

For now the include lines in these headers are being ignored so as not
to flag false reports of kernel/tools out of sync.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: x86@kernel.org
Link: http://lore.kernel.org/lkml/8a37e615d2880f039505d693d1e068a009358a2b.1567118001.git.jpoimboe@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-31 22:27:52 -03:00

84 lines
1.9 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* x86 instruction attribute tables
*
* Written by Masami Hiramatsu <mhiramat@redhat.com>
*/
#include "../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];
}