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inat.c
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1 /*
2  * x86 instruction attribute tables
3  *
4  * Written by Masami Hiramatsu <[email protected]>
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 */
28 {
29  return inat_primary_table[opcode];
30 }
31 
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 
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 
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 
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