1 #ifndef _ASM_X86_INAT_H
2 #define _ASM_X86_INAT_H
3 /*
4 * x86 instruction attributes
5 *
6 * Written by Masami Hiramatsu <mhiramat@redhat.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21 *
22 */
23 #include <asm/inat_types.h>
24
25 /*
26 * Internal bits. Don't use bitmasks directly, because these bits are
27 * unstable. You should use checking functions.
28 */
29
30 #define INAT_OPCODE_TABLE_SIZE 256
31 #define INAT_GROUP_TABLE_SIZE 8
32
33 /* Legacy last prefixes */
34 #define INAT_PFX_OPNDSZ 1 /* 0x66 */ /* LPFX1 */
35 #define INAT_PFX_REPE 2 /* 0xF3 */ /* LPFX2 */
36 #define INAT_PFX_REPNE 3 /* 0xF2 */ /* LPFX3 */
37 /* Other Legacy prefixes */
38 #define INAT_PFX_LOCK 4 /* 0xF0 */
39 #define INAT_PFX_CS 5 /* 0x2E */
40 #define INAT_PFX_DS 6 /* 0x3E */
41 #define INAT_PFX_ES 7 /* 0x26 */
42 #define INAT_PFX_FS 8 /* 0x64 */
43 #define INAT_PFX_GS 9 /* 0x65 */
44 #define INAT_PFX_SS 10 /* 0x36 */
45 #define INAT_PFX_ADDRSZ 11 /* 0x67 */
46 /* x86-64 REX prefix */
47 #define INAT_PFX_REX 12 /* 0x4X */
48 /* AVX VEX prefixes */
49 #define INAT_PFX_VEX2 13 /* 2-bytes VEX prefix */
50 #define INAT_PFX_VEX3 14 /* 3-bytes VEX prefix */
51 #define INAT_PFX_EVEX 15 /* EVEX prefix */
52
53 #define INAT_LSTPFX_MAX 3
54 #define INAT_LGCPFX_MAX 11
55
56 /* Immediate size */
57 #define INAT_IMM_BYTE 1
58 #define INAT_IMM_WORD 2
59 #define INAT_IMM_DWORD 3
60 #define INAT_IMM_QWORD 4
61 #define INAT_IMM_PTR 5
62 #define INAT_IMM_VWORD32 6
63 #define INAT_IMM_VWORD 7
64
65 /* Legacy prefix */
66 #define INAT_PFX_OFFS 0
67 #define INAT_PFX_BITS 4
68 #define INAT_PFX_MAX ((1 << INAT_PFX_BITS) - 1)
69 #define INAT_PFX_MASK (INAT_PFX_MAX << INAT_PFX_OFFS)
70 /* Escape opcodes */
71 #define INAT_ESC_OFFS (INAT_PFX_OFFS + INAT_PFX_BITS)
72 #define INAT_ESC_BITS 2
73 #define INAT_ESC_MAX ((1 << INAT_ESC_BITS) - 1)
74 #define INAT_ESC_MASK (INAT_ESC_MAX << INAT_ESC_OFFS)
75 /* Group opcodes (1-16) */
76 #define INAT_GRP_OFFS (INAT_ESC_OFFS + INAT_ESC_BITS)
77 #define INAT_GRP_BITS 5
78 #define INAT_GRP_MAX ((1 << INAT_GRP_BITS) - 1)
79 #define INAT_GRP_MASK (INAT_GRP_MAX << INAT_GRP_OFFS)
80 /* Immediates */
81 #define INAT_IMM_OFFS (INAT_GRP_OFFS + INAT_GRP_BITS)
82 #define INAT_IMM_BITS 3
83 #define INAT_IMM_MASK (((1 << INAT_IMM_BITS) - 1) << INAT_IMM_OFFS)
84 /* Flags */
85 #define INAT_FLAG_OFFS (INAT_IMM_OFFS + INAT_IMM_BITS)
86 #define INAT_MODRM (1 << (INAT_FLAG_OFFS))
87 #define INAT_FORCE64 (1 << (INAT_FLAG_OFFS + 1))
88 #define INAT_SCNDIMM (1 << (INAT_FLAG_OFFS + 2))
89 #define INAT_MOFFSET (1 << (INAT_FLAG_OFFS + 3))
90 #define INAT_VARIANT (1 << (INAT_FLAG_OFFS + 4))
91 #define INAT_VEXOK (1 << (INAT_FLAG_OFFS + 5))
92 #define INAT_VEXONLY (1 << (INAT_FLAG_OFFS + 6))
93 #define INAT_EVEXONLY (1 << (INAT_FLAG_OFFS + 7))
94 /* Attribute making macros for attribute tables */
95 #define INAT_MAKE_PREFIX(pfx) (pfx << INAT_PFX_OFFS)
96 #define INAT_MAKE_ESCAPE(esc) (esc << INAT_ESC_OFFS)
97 #define INAT_MAKE_GROUP(grp) ((grp << INAT_GRP_OFFS) | INAT_MODRM)
98 #define INAT_MAKE_IMM(imm) (imm << INAT_IMM_OFFS)
99
100 /* Identifiers for segment registers */
101 #define INAT_SEG_REG_IGNORE 0
102 #define INAT_SEG_REG_DEFAULT 1
103 #define INAT_SEG_REG_CS 2
104 #define INAT_SEG_REG_SS 3
105 #define INAT_SEG_REG_DS 4
106 #define INAT_SEG_REG_ES 5
107 #define INAT_SEG_REG_FS 6
108 #define INAT_SEG_REG_GS 7
109
110 /* Attribute search APIs */
111 extern insn_attr_t inat_get_opcode_attribute(insn_byte_t opcode);
112 extern int inat_get_last_prefix_id(insn_byte_t last_pfx);
113 extern insn_attr_t inat_get_escape_attribute(insn_byte_t opcode,
114 int lpfx_id,
115 insn_attr_t esc_attr);
116 extern insn_attr_t inat_get_group_attribute(insn_byte_t modrm,
117 int lpfx_id,
118 insn_attr_t esc_attr);
119 extern insn_attr_t inat_get_avx_attribute(insn_byte_t opcode,
120 insn_byte_t vex_m,
121 insn_byte_t vex_pp);
122
123 /* Attribute checking functions */
inat_is_legacy_prefix(insn_attr_t attr)124 static inline int inat_is_legacy_prefix(insn_attr_t attr)
125 {
126 attr &= INAT_PFX_MASK;
127 return attr && attr <= INAT_LGCPFX_MAX;
128 }
129
inat_is_address_size_prefix(insn_attr_t attr)130 static inline int inat_is_address_size_prefix(insn_attr_t attr)
131 {
132 return (attr & INAT_PFX_MASK) == INAT_PFX_ADDRSZ;
133 }
134
inat_is_operand_size_prefix(insn_attr_t attr)135 static inline int inat_is_operand_size_prefix(insn_attr_t attr)
136 {
137 return (attr & INAT_PFX_MASK) == INAT_PFX_OPNDSZ;
138 }
139
inat_is_rex_prefix(insn_attr_t attr)140 static inline int inat_is_rex_prefix(insn_attr_t attr)
141 {
142 return (attr & INAT_PFX_MASK) == INAT_PFX_REX;
143 }
144
inat_last_prefix_id(insn_attr_t attr)145 static inline int inat_last_prefix_id(insn_attr_t attr)
146 {
147 if ((attr & INAT_PFX_MASK) > INAT_LSTPFX_MAX)
148 return 0;
149 else
150 return attr & INAT_PFX_MASK;
151 }
152
inat_is_vex_prefix(insn_attr_t attr)153 static inline int inat_is_vex_prefix(insn_attr_t attr)
154 {
155 attr &= INAT_PFX_MASK;
156 return attr == INAT_PFX_VEX2 || attr == INAT_PFX_VEX3 ||
157 attr == INAT_PFX_EVEX;
158 }
159
inat_is_evex_prefix(insn_attr_t attr)160 static inline int inat_is_evex_prefix(insn_attr_t attr)
161 {
162 return (attr & INAT_PFX_MASK) == INAT_PFX_EVEX;
163 }
164
inat_is_vex3_prefix(insn_attr_t attr)165 static inline int inat_is_vex3_prefix(insn_attr_t attr)
166 {
167 return (attr & INAT_PFX_MASK) == INAT_PFX_VEX3;
168 }
169
inat_is_escape(insn_attr_t attr)170 static inline int inat_is_escape(insn_attr_t attr)
171 {
172 return attr & INAT_ESC_MASK;
173 }
174
inat_escape_id(insn_attr_t attr)175 static inline int inat_escape_id(insn_attr_t attr)
176 {
177 return (attr & INAT_ESC_MASK) >> INAT_ESC_OFFS;
178 }
179
inat_is_group(insn_attr_t attr)180 static inline int inat_is_group(insn_attr_t attr)
181 {
182 return attr & INAT_GRP_MASK;
183 }
184
inat_group_id(insn_attr_t attr)185 static inline int inat_group_id(insn_attr_t attr)
186 {
187 return (attr & INAT_GRP_MASK) >> INAT_GRP_OFFS;
188 }
189
inat_group_common_attribute(insn_attr_t attr)190 static inline int inat_group_common_attribute(insn_attr_t attr)
191 {
192 return attr & ~INAT_GRP_MASK;
193 }
194
inat_has_immediate(insn_attr_t attr)195 static inline int inat_has_immediate(insn_attr_t attr)
196 {
197 return attr & INAT_IMM_MASK;
198 }
199
inat_immediate_size(insn_attr_t attr)200 static inline int inat_immediate_size(insn_attr_t attr)
201 {
202 return (attr & INAT_IMM_MASK) >> INAT_IMM_OFFS;
203 }
204
inat_has_modrm(insn_attr_t attr)205 static inline int inat_has_modrm(insn_attr_t attr)
206 {
207 return attr & INAT_MODRM;
208 }
209
inat_is_force64(insn_attr_t attr)210 static inline int inat_is_force64(insn_attr_t attr)
211 {
212 return attr & INAT_FORCE64;
213 }
214
inat_has_second_immediate(insn_attr_t attr)215 static inline int inat_has_second_immediate(insn_attr_t attr)
216 {
217 return attr & INAT_SCNDIMM;
218 }
219
inat_has_moffset(insn_attr_t attr)220 static inline int inat_has_moffset(insn_attr_t attr)
221 {
222 return attr & INAT_MOFFSET;
223 }
224
inat_has_variant(insn_attr_t attr)225 static inline int inat_has_variant(insn_attr_t attr)
226 {
227 return attr & INAT_VARIANT;
228 }
229
inat_accept_vex(insn_attr_t attr)230 static inline int inat_accept_vex(insn_attr_t attr)
231 {
232 return attr & INAT_VEXOK;
233 }
234
inat_must_vex(insn_attr_t attr)235 static inline int inat_must_vex(insn_attr_t attr)
236 {
237 return attr & (INAT_VEXONLY | INAT_EVEXONLY);
238 }
239
inat_must_evex(insn_attr_t attr)240 static inline int inat_must_evex(insn_attr_t attr)
241 {
242 return attr & INAT_EVEXONLY;
243 }
244 #endif
245
