1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * x86 instruction attribute tables
4 *
5 * Written by Masami Hiramatsu <mhiramat@redhat.com>
6 */
7 #include "../include/asm/insn.h" /* __ignore_sync_check__ */
8
9 /* Attribute tables are generated from opcode map */
10 #include "inat-tables.c"
11
12 /* Attribute search APIs */
13 insn_attr_t inat_get_opcode_attribute(insn_byte_t opcode)
14 {
15 return inat_primary_table[opcode];
16 }
17
18 int inat_get_last_prefix_id(insn_byte_t last_pfx)
19 {
20 insn_attr_t lpfx_attr;
21
22 lpfx_attr = inat_get_opcode_attribute(last_pfx);
23 return inat_last_prefix_id(lpfx_attr);
24 }
25
26 insn_attr_t inat_get_escape_attribute(insn_byte_t opcode, int lpfx_id,
27 insn_attr_t esc_attr)
28 {
29 const insn_attr_t *table;
30 int n;
31
32 n = inat_escape_id(esc_attr);
33
34 table = inat_escape_tables[n][0];
35 if (!table)
36 return 0;
37 if (inat_has_variant(table[opcode]) && lpfx_id) {
38 table = inat_escape_tables[n][lpfx_id];
39 if (!table)
40 return 0;
41 }
42 return table[opcode];
43 }
44
45 insn_attr_t inat_get_group_attribute(insn_byte_t modrm, int lpfx_id,
46 insn_attr_t grp_attr)
47 {
48 const insn_attr_t *table;
49 int n;
50
51 n = inat_group_id(grp_attr);
52
53 table = inat_group_tables[n][0];
54 if (!table)
55 return inat_group_common_attribute(grp_attr);
56 if (inat_has_variant(table[X86_MODRM_REG(modrm)]) && lpfx_id) {
57 table = inat_group_tables[n][lpfx_id];
58 if (!table)
59 return inat_group_common_attribute(grp_attr);
60 }
61 return table[X86_MODRM_REG(modrm)] |
62 inat_group_common_attribute(grp_attr);
63 }
64
65 insn_attr_t inat_get_avx_attribute(insn_byte_t opcode, insn_byte_t vex_m,
66 insn_byte_t vex_p)
67 {
68 const insn_attr_t *table;
69 if (vex_m > X86_VEX_M_MAX || vex_p > INAT_LSTPFX_MAX)
70 return 0;
71 /* At first, this checks the master table */
72 table = inat_avx_tables[vex_m][0];
73 if (!table)
74 return 0;
75 if (!inat_is_group(table[opcode]) && vex_p) {
76 /* If this is not a group, get attribute directly */
77 table = inat_avx_tables[vex_m][vex_p];
78 if (!table)
79 return 0;
80 }
81 return table[opcode];
82 }
83
84
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