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1 /*
2  * x86 instruction attribute tables
3  *
4  * Written by Masami Hiramatsu <mhiramat@redhat.com>
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19  *
20  */
21 #include <asm/insn.h>
22 
23 /* Attribute tables are generated from opcode map */
24 #include "inat-tables.c"
25 
26 /* Attribute search APIs */
inat_get_opcode_attribute(insn_byte_t opcode)27 insn_attr_t inat_get_opcode_attribute(insn_byte_t opcode)
28 {
29 	return inat_primary_table[opcode];
30 }
31 
inat_get_last_prefix_id(insn_byte_t last_pfx)32 int inat_get_last_prefix_id(insn_byte_t last_pfx)
33 {
34 	insn_attr_t lpfx_attr;
35 
36 	lpfx_attr = inat_get_opcode_attribute(last_pfx);
37 	return inat_last_prefix_id(lpfx_attr);
38 }
39 
inat_get_escape_attribute(insn_byte_t opcode,int lpfx_id,insn_attr_t esc_attr)40 insn_attr_t inat_get_escape_attribute(insn_byte_t opcode, int lpfx_id,
41 				      insn_attr_t esc_attr)
42 {
43 	const insn_attr_t *table;
44 	int n;
45 
46 	n = inat_escape_id(esc_attr);
47 
48 	table = inat_escape_tables[n][0];
49 	if (!table)
50 		return 0;
51 	if (inat_has_variant(table[opcode]) && lpfx_id) {
52 		table = inat_escape_tables[n][lpfx_id];
53 		if (!table)
54 			return 0;
55 	}
56 	return table[opcode];
57 }
58 
inat_get_group_attribute(insn_byte_t modrm,int lpfx_id,insn_attr_t grp_attr)59 insn_attr_t inat_get_group_attribute(insn_byte_t modrm, int lpfx_id,
60 				     insn_attr_t grp_attr)
61 {
62 	const insn_attr_t *table;
63 	int n;
64 
65 	n = inat_group_id(grp_attr);
66 
67 	table = inat_group_tables[n][0];
68 	if (!table)
69 		return inat_group_common_attribute(grp_attr);
70 	if (inat_has_variant(table[X86_MODRM_REG(modrm)]) && lpfx_id) {
71 		table = inat_group_tables[n][lpfx_id];
72 		if (!table)
73 			return inat_group_common_attribute(grp_attr);
74 	}
75 	return table[X86_MODRM_REG(modrm)] |
76 	       inat_group_common_attribute(grp_attr);
77 }
78 
inat_get_avx_attribute(insn_byte_t opcode,insn_byte_t vex_m,insn_byte_t vex_p)79 insn_attr_t inat_get_avx_attribute(insn_byte_t opcode, insn_byte_t vex_m,
80 				   insn_byte_t vex_p)
81 {
82 	const insn_attr_t *table;
83 	if (vex_m > X86_VEX_M_MAX || vex_p > INAT_LSTPFX_MAX)
84 		return 0;
85 	/* At first, this checks the master table */
86 	table = inat_avx_tables[vex_m][0];
87 	if (!table)
88 		return 0;
89 	if (!inat_is_group(table[opcode]) && vex_p) {
90 		/* If this is not a group, get attribute directly */
91 		table = inat_avx_tables[vex_m][vex_p];
92 		if (!table)
93 			return 0;
94 	}
95 	return table[opcode];
96 }
97 
98