summaryrefslogtreecommitdiffstats
path: root/tools/objtool/arch/x86/lib/inat.c
blob: c1f01a8e9f65ecd266b81a2806cf6ff56d3ed5ba (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
/*
 * 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];
}