arch/x86/include/asm/inat.h

   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 */
 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
 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
 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
 140 static inline int inat_is_rex_prefix(insn_attr_t attr)
 141 {
 142         return (attr & INAT_PFX_MASK) == INAT_PFX_REX;
 143 }
 144
 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
 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
 160 static inline int inat_is_evex_prefix(insn_attr_t attr)
 161 {
 162         return (attr & INAT_PFX_MASK) == INAT_PFX_EVEX;
 163 }
 164
 165 static inline int inat_is_vex3_prefix(insn_attr_t attr)
 166 {
 167         return (attr & INAT_PFX_MASK) == INAT_PFX_VEX3;
 168 }
 169
 170 static inline int inat_is_escape(insn_attr_t attr)
 171 {
 172         return attr & INAT_ESC_MASK;
 173 }
 174
 175 static inline int inat_escape_id(insn_attr_t attr)
 176 {
 177         return (attr & INAT_ESC_MASK) >> INAT_ESC_OFFS;
 178 }
 179
 180 static inline int inat_is_group(insn_attr_t attr)
 181 {
 182         return attr & INAT_GRP_MASK;
 183 }
 184
 185 static inline int inat_group_id(insn_attr_t attr)
 186 {
 187         return (attr & INAT_GRP_MASK) >> INAT_GRP_OFFS;
 188 }
 189
 190 static inline int inat_group_common_attribute(insn_attr_t attr)
 191 {
 192         return attr & ~INAT_GRP_MASK;
 193 }
 194
 195 static inline int inat_has_immediate(insn_attr_t attr)
 196 {
 197         return attr & INAT_IMM_MASK;
 198 }
 199
 200 static inline int inat_immediate_size(insn_attr_t attr)
 201 {
 202         return (attr & INAT_IMM_MASK) >> INAT_IMM_OFFS;
 203 }
 204
 205 static inline int inat_has_modrm(insn_attr_t attr)
 206 {
 207         return attr & INAT_MODRM;
 208 }
 209
 210 static inline int inat_is_force64(insn_attr_t attr)
 211 {
 212         return attr & INAT_FORCE64;
 213 }
 214
 215 static inline int inat_has_second_immediate(insn_attr_t attr)
 216 {
 217         return attr & INAT_SCNDIMM;
 218 }
 219
 220 static inline int inat_has_moffset(insn_attr_t attr)
 221 {
 222         return attr & INAT_MOFFSET;
 223 }
 224
 225 static inline int inat_has_variant(insn_attr_t attr)
 226 {
 227         return attr & INAT_VARIANT;
 228 }
 229
 230 static inline int inat_accept_vex(insn_attr_t attr)
 231 {
 232         return attr & INAT_VEXOK;
 233 }
 234
 235 static inline int inat_must_vex(insn_attr_t attr)
 236 {
 237         return attr & (INAT_VEXONLY | INAT_EVEXONLY);
 238 }
 239
 240 static inline int inat_must_evex(insn_attr_t attr)
 241 {
 242         return attr & INAT_EVEXONLY;
 243 }
 244 #endif