/*
* New-style decoder for i386 instructions
*
* Copyright (c) 2022 Red Hat, Inc.
*
* Author: Paolo Bonzini <pbonzini@redhat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
/*
* The decoder is mostly based on tables copied from the Intel SDM. As
* a result, most operand load and writeback is done entirely in common
* table-driven code using the same operand type (X86_TYPE_*) and
* size (X86_SIZE_*) codes used in the manual.
*
* The main difference is that the V, U and W types are extended to
* cover MMX as well; if an instruction is like
*
* por Pq, Qq
* 66 por Vx, Hx, Wx
*
* only the second row is included and the instruction is marked as a
* valid MMX instruction. The MMX flag directs the decoder to rewrite
* the V/U/H/W types to P/N/P/Q if there is no prefix, as well as changing
* "x" to "q" if there is no prefix.
*
* In addition, the ss/ps/sd/pd types are sometimes mushed together as "x"
* if the difference is expressed via prefixes. Individual instructions
* are separated by prefix in the generator functions.
*
* There are a couple cases in which instructions (e.g. MOVD) write the
* whole XMM or MM register but are established incorrectly in the manual
* as "d" or "q". These have to be fixed for the decoder to work correctly.
*/
#define X86_OP_NONE { 0 },
#define X86_OP_GROUP3(op, op0_, s0_, op1_, s1_, op2_, s2_, ...) { \
.decode = glue(decode_, op), \
.op0 = glue(X86_TYPE_, op0_), \
.s0 = glue(X86_SIZE_, s0_), \
.op1 = glue(X86_TYPE_, op1_), \
.s1 = glue(X86_SIZE_, s1_), \
.op2 = glue(X86_TYPE_, op2_), \
.s2 = glue(X86_SIZE_, s2_), \
.is_decode = true, \
## __VA_ARGS__ \
}
#define X86_OP_GROUP2(op, op0, s0, op1, s1, ...) \
X86_OP_GROUP3(op, op0, s0, 2op, s0, op1, s1, ## __VA_ARGS__)
#define X86_OP_GROUP0(op, ...) \
X86_OP_GROUP3(op, None, None, None, None, None, None, ## __VA_ARGS__)
#define X86_OP_ENTRY3(op, op0_, s0_, op1_, s1_, op2_, s2_, ...) { \
.gen = glue(gen_, op), \
.op0 = glue(X86_TYPE_, op0_), \
.s0 = glue(X86_SIZE_, s0_), \
.op1 = glue(X86_TYPE_, op1_), \
.s1 = glue(X86_SIZE_, s1_), \
.op2 = glue(X86_TYPE_, op2_), \
.s2 = glue(X86_SIZE_, s2_), \
## __VA_ARGS__ \
}
#define X86_OP_ENTRY4(op, op0_, s0_, op1_, s1_, op2_, s2_, ...) \
X86_OP_ENTRY3(op, op0_, s0_, op1_, s1_, op2_, s2_, \
.op3 = X86_TYPE_I, .s3 = X86_SIZE_b, \
## __VA_ARGS__)
#define X86_OP_ENTRY2(op, op0, s0, op1, s1, ...) \
X86_OP_ENTRY3(op, op0, s0, 2op, s0, op1, s1, ## __VA_ARGS__)
#define X86_OP_ENTRYw(op, op0, s0, ...) \
X86_OP_ENTRY3(op, op0, s0, None, None, None, None, ## __VA_ARGS__)
#define X86_OP_ENTRYr(op, op0, s0, ...) \
X86_OP_ENTRY3(op, None, None, None, None, op0, s0, ## __VA_ARGS__)
#define X86_OP_ENTRY0(op, ...) \
X86_OP_ENTRY3(op, None, None, None, None, None, None, ## __VA_ARGS__)
#define cpuid(feat) .cpuid = X86_FEAT_##feat,
#define i64 .special = X86_SPECIAL_i64,
#define o64 .special = X86_SPECIAL_o64,
#define xchg .special = X86_SPECIAL_Locked,
#define mmx .special = X86_SPECIAL_MMX,
#define zext0 .special = X86_SPECIAL_ZExtOp0,
#define zext2 .special = X86_SPECIAL_ZExtOp2,
#define avx_movx .special = X86_SPECIAL_AVXExtMov,
#define vex1 .vex_class = 1,
#define vex1_rep3 .vex_class = 1, .vex_special = X86_VEX_REPScalar,
#define vex2 .vex_class = 2,
#define vex2_rep3 .vex_class = 2, .vex_special = X86_VEX_REPScalar,
#define vex3 .vex_class = 3,
#define vex4 .vex_class = 4,
#define vex4_unal .vex_class = 4, .vex_special = X86_VEX_SSEUnaligned,
#define vex5 .vex_class = 5,
#define vex6 .vex_class = 6,
#define vex7 .vex_class = 7,
#define vex8 .vex_class = 8,
#define vex11 .vex_class = 11,
#define vex12 .vex_class = 12,
#define vex13 .vex_class = 13,
#define avx2_256 .vex_special = X86_VEX_AVX2_256,
#define P_00 1
#define P_66 (1 << PREFIX_DATA)
#define P_F3 (1 << PREFIX_REPZ)
#define P_F2 (1 << PREFIX_REPNZ)
#define p_00 .valid_prefix = P_00,
#define p_66 .valid_prefix = P_66,
#define p_f3 .valid_prefix = P_F3,
#define p_f2 .valid_prefix = P_F2,
#define p_00_66 .valid_prefix = P_00 | P_66,
#define p_00_f3 .valid_prefix = P_00 | P_F3,
#define p_66_f2 .valid_prefix = P_66 | P_F2,
#define p_00_66_f3 .valid_prefix = P_00 | P_66 | P_F3,
#define p_66_f3_f2 .valid_prefix = P_66 | P_F3 | P_F2,
#define p_00_66_f3_f2 .valid_prefix = P_00 | P_66 | P_F3 | P_F2,
static uint8_t get_modrm(DisasContext *s, CPUX86State *env)
{
if (!s->has_modrm) {
s->modrm = x86_ldub_code(env, s);
s->has_modrm = true;
}
return s->modrm;
}
static inline const X86OpEntry *decode_by_prefix(DisasContext *s, const X86OpEntry entries[4])
{
if (s->prefix & PREFIX_REPNZ) {
return &entries[3];
} else if (s->prefix & PREFIX_REPZ) {
return &entries[2];
} else if (s->prefix & PREFIX_DATA) {
return &entries[1];
} else {
return &entries[0];
}
}
static void decode_group15(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
/* only includes ldmxcsr and stmxcsr, because they have AVX variants. */
static const X86OpEntry group15_reg[8] = {
};
static const X86OpEntry group15_mem[8] = {
[2] = X86_OP_ENTRYr(LDMXCSR, E,d, vex5),
[3] = X86_OP_ENTRYw(STMXCSR, E,d, vex5),
};
uint8_t modrm = get_modrm(s, env);
if ((modrm >> 6) == 3) {
*entry = group15_reg[(modrm >> 3) & 7];
} else {
*entry = group15_mem[(modrm >> 3) & 7];
}
}
static void decode_group17(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
static const X86GenFunc group17_gen[8] = {
NULL, gen_BLSR, gen_BLSMSK, gen_BLSI,
};
int op = (get_modrm(s, env) >> 3) & 7;
entry->gen = group17_gen[op];
}
static void decode_group12(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
static const X86OpEntry opcodes_group12[8] = {
{},
{},
X86_OP_ENTRY3(PSRLW_i, H,x, U,x, I,b, vex7 mmx avx2_256 p_00_66),
{},
X86_OP_ENTRY3(PSRAW_i, H,x, U,x, I,b, vex7 mmx avx2_256 p_00_66),
{},
X86_OP_ENTRY3(PSLLW_i, H,x, U,x, I,b, vex7 mmx avx2_256 p_00_66),
{},
};
int op = (get_modrm(s, env) >> 3) & 7;
*entry = opcodes_group12[op];
}
static void decode_group13(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
static const X86OpEntry opcodes_group13[8] = {
{},
{},
X86_OP_ENTRY3(PSRLD_i, H,x, U,x, I,b, vex7 mmx avx2_256 p_00_66),
{},
X86_OP_ENTRY3(PSRAD_i, H,x, U,x, I,b, vex7 mmx avx2_256 p_00_66),
{},
X86_OP_ENTRY3(PSLLD_i, H,x, U,x, I,b, vex7 mmx avx2_256 p_00_66),
{},
};
int op = (get_modrm(s, env) >> 3) & 7;
*entry = opcodes_group13[op];
}
static void decode_group14(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
static const X86OpEntry opcodes_group14[8] = {
/* grp14 */
{},
{},
X86_OP_ENTRY3(PSRLQ_i, H,x, U,x, I,b, vex7 mmx avx2_256 p_00_66),
X86_OP_ENTRY3(PSRLDQ_i, H,x, U,x, I,b, vex7 avx2_256 p_66),
{},
{},
X86_OP_ENTRY3(PSLLQ_i, H,x, U,x, I,b, vex7 mmx avx2_256 p_00_66),
X86_OP_ENTRY3(PSLLDQ_i, H,x, U,x, I,b, vex7 avx2_256 p_66),
};
int op = (get_modrm(s, env) >> 3) & 7;
*entry = opcodes_group14[op];
}
static void decode_0F6F(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
static const X86OpEntry opcodes_0F6F[4] = {
X86_OP_ENTRY3(MOVDQ, P,q, None,None, Q,q, vex1 mmx), /* movq */
X86_OP_ENTRY3(MOVDQ, V,x, None,None, W,x, vex1), /* movdqa */
X86_OP_ENTRY3(MOVDQ, V,x, None,None, W,x, vex4_unal), /* movdqu */
{},
};
*entry = *decode_by_prefix(s, opcodes_0F6F);
}
static void decode_0F70(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
static const X86OpEntry pshufw[4] = {
X86_OP_ENTRY3(PSHUFW, P,q, Q,q, I,b, vex4 mmx),
X86_OP_ENTRY3(PSHUFD, V,x, W,x, I,b, vex4 avx2_256),
X86_OP_ENTRY3(PSHUFHW, V,x, W,x, I,b, vex4 avx2_256),
X86_OP_ENTRY3(PSHUFLW, V,x, W,x, I,b, vex4 avx2_256),
};
*entry = *decode_by_prefix(s, pshufw);
}
static void decode_0F77(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
if (!(s->prefix & PREFIX_VEX)) {
entry->gen = gen_EMMS;
} else if (!s->vex_l) {
entry->gen = gen_VZEROUPPER;
entry->vex_class = 8;
} else {
entry->gen = gen_VZEROALL;
entry->vex_class = 8;
}
}
static void decode_0F78(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
static const X86OpEntry opcodes_0F78[4] = {
{},
X86_OP_ENTRY3(EXTRQ_i, V,x, None,None, I,w, cpuid(SSE4A)),
{},
X86_OP_ENTRY3(INSERTQ_i, V,x, U,x, I,w, cpuid(SSE4A)),
};
*entry = *decode_by_prefix(s, opcodes_0F78);
}
static void decode_0F79(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
if (s->prefix & PREFIX_REPNZ) {
entry->gen = gen_INSERTQ_r;
} else if (s->prefix & PREFIX_DATA) {
entry->gen = gen_EXTRQ_r;
} else {
entry->gen = NULL;
};
}
static void decode_0F7E(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
static const X86OpEntry opcodes_0F7E[4] = {
X86_OP_ENTRY3(MOVD_from, E,y, None,None, P,y, vex5 mmx),
X86_OP_ENTRY3(MOVD_from, E,y, None,None, V,y, vex5),
X86_OP_ENTRY3(MOVQ, V,x, None,None, W,q, vex5), /* wrong dest Vy on SDM! */
{},
};
*entry = *decode_by_prefix(s, opcodes_0F7E);
}
static void decode_0F7F(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
static const X86OpEntry opcodes_0F7F[4] = {
X86_OP_ENTRY3(MOVDQ, W,x, None,None, V,x, vex1 mmx), /* movq */
X86_OP_ENTRY3(MOVDQ, W,x, None,None, V,x, vex1), /* movdqa */
X86_OP_ENTRY3(MOVDQ, W,x, None,None, V,x, vex4_unal), /* movdqu */
{},
};
*entry = *decode_by_prefix(s, opcodes_0F7F);
}
static void decode_0FD6(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
static const X86OpEntry movq[4] = {
{},
X86_OP_ENTRY3(MOVQ, W,x, None, None, V,q, vex5),
X86_OP_ENTRY3(MOVq_dq, V,dq, None, None, N,q),
X86_OP_ENTRY3(MOVq_dq, P,q, None, None, U,q),
};
*entry = *decode_by_prefix(s, movq);
}
static const X86OpEntry opcodes_0F38_00toEF[240] = {
[0x00] = X86_OP_ENTRY3(PSHUFB, V,x, H,x, W,x, vex4 cpuid(SSSE3) mmx avx2_256 p_00_66),
[0x01] = X86_OP_ENTRY3(PHADDW, V,x, H,x, W,x, vex4 cpuid(SSSE3) mmx avx2_256 p_00_66),
[0x02] = X86_OP_ENTRY3(PHADDD, V,x, H,x, W,x, vex4 cpuid(SSSE3) mmx avx2_256 p_00_66),
[0x03] = X86_OP_ENTRY3(PHADDSW, V,x, H,x, W,x, vex4 cpuid(SSSE3) mmx avx2_256 p_00_66),
[0x04] = X86_OP_ENTRY3(PMADDUBSW, V,x, H,x, W,x, vex4 cpuid(SSSE3) mmx avx2_256 p_00_66),
[0x05] = X86_OP_ENTRY3(PHSUBW, V,x, H,x, W,x, vex4 cpuid(SSSE3) mmx avx2_256 p_00_66),
[0x06] = X86_OP_ENTRY3(PHSUBD, V,x, H,x, W,x, vex4 cpuid(SSSE3) mmx avx2_256 p_00_66),
[0x07] = X86_OP_ENTRY3(PHSUBSW, V,x, H,x, W,x, vex4 cpuid(SSSE3) mmx avx2_256 p_00_66),
[0x10] = X86_OP_ENTRY2(PBLENDVB, V,x, W,x, vex4 cpuid(SSE41) avx2_256 p_66),
[0x13] = X86_OP_ENTRY2(VCVTPH2PS, V,x, W,ph, vex11 cpuid(F16C) p_66),
[0x14] = X86_OP_ENTRY2(BLENDVPS, V,x, W,x, vex4 cpuid(SSE41) p_66),
[0x15] = X86_OP_ENTRY2(BLENDVPD, V,x, W,x, vex4 cpuid(SSE41) p_66),
/* Listed incorrectly as type 4 */
[0x16] = X86_OP_ENTRY3(VPERMD, V,qq, H,qq, W,qq, vex6 cpuid(AVX2) p_66),
[0x17] = X86_OP_ENTRY3(VPTEST, None,None, V,x, W,x, vex4 cpuid(SSE41) p_66),
/*
* Source operand listed as Mq/Ux and similar in the manual; incorrectly listed
* as 128-bit only in 2-17.
*/
[0x20] = X86_OP_ENTRY3(VPMOVSXBW, V,x, None,None, W,q, vex5 cpuid(SSE41) avx_movx avx2_256 p_66),
[0x21] = X86_OP_ENTRY3(VPMOVSXBD, V,x, None,None, W,d, vex5 cpuid(SSE41) avx_movx avx2_256 p_66),
[0x22] = X86_OP_ENTRY3(VPMOVSXBQ, V,x, None,None, W,w, vex5 cpuid(SSE41) avx_movx avx2_256 p_66),
[0x23] = X86_OP_ENTRY3(VPMOVSXWD, V,x, None,None, W,q, vex5 cpuid(SSE41) avx_movx avx2_256 p_66),
[0x24] = X86_OP_ENTRY3(VPMOVSXWQ, V,x, None,None, W,d, vex5 cpuid(SSE41) avx_movx avx2_256 p_66),
[0x25] = X86_OP_ENTRY3(VPMOVSXDQ, V,x, None,None, W,q, vex5 cpuid(SSE41) avx_movx avx2_256 p_66),
/* Same as PMOVSX. */
[0x30] = X86_OP_ENTRY3(VPMOVZXBW, V,x, None,None, W,q, vex5 cpuid(SSE41) avx_movx avx2_256 p_66),
[0x31] = X86_OP_ENTRY3(VPMOVZXBD, V,x, None,None, W,d, vex5 cpuid(SSE41) avx_movx avx2_256 p_66),
[0x32] = X86_OP_ENTRY3(VPMOVZXBQ, V,x, None,None, W,w, vex5 cpuid(SSE41) avx_movx avx2_256 p_66),
[0x33] = X86_OP_ENTRY3(VPMOVZXWD, V,x, None,None, W,q, vex5 cpuid(SSE41) avx_movx avx2_256 p_66),
[0x34] = X86_OP_ENTRY3(VPMOVZXWQ, V,x, None,None, W,d, vex5 cpuid(SSE41) avx_movx avx2_256 p_66),
[0x35] = X86_OP_ENTRY3(VPMOVZXDQ, V,x, None,None, W,q, vex5 cpuid(SSE41) avx_movx avx2_256 p_66),
[0x36] = X86_OP_ENTRY3(VPERMD, V,qq, H,qq, W,qq, vex6 cpuid(AVX2) p_66),
[0x37] = X86_OP_ENTRY3(PCMPGTQ, V,x, H,x, W,x, vex4 cpuid(SSE42) avx2_256 p_66),
[0x40] = X86_OP_ENTRY3(PMULLD, V,x, H,x, W,x, vex4 cpuid(SSE41) avx2_256 p_66),
[0x41] = X86_OP_ENTRY3(VPHMINPOSUW, V,dq, None,None, W,dq, vex4 cpuid(SSE41) p_66),
/* Listed incorrectly as type 4 */
[0x45] = X86_OP_ENTRY3(VPSRLV, V,x, H,x, W,x, vex6 cpuid(AVX2) p_66),
[0x46] = X86_OP_ENTRY3(VPSRAV, V,x, H,x, W,x, vex6 cpuid(AVX2) p_66),
[0x47] = X86_OP_ENTRY3(VPSLLV, V,x, H,x, W,x, vex6 cpuid(AVX2) p_66),
[0x90] = X86_OP_ENTRY3(VPGATHERD, V,x, H,x, M,d, vex12 cpuid(AVX2) p_66), /* vpgatherdd/q */
[0x91] = X86_OP_ENTRY3(VPGATHERQ, V,x, H,x, M,q, vex12 cpuid(AVX2) p_66), /* vpgatherqd/q */
[0x92] = X86_OP_ENTRY3(VPGATHERD, V,x, H,x, M,d, vex12 cpuid(AVX2) p_66), /* vgatherdps/d */
[0x93] = X86_OP_ENTRY3(VPGATHERQ, V,x, H,x, M,q, vex12 cpuid(AVX2) p_66), /* vgatherqps/d */
/* Should be exception type 2 but they do not have legacy SSE equivalents? */
[0x96] = X86_OP_ENTRY3(VFMADDSUB132Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0x97] = X86_OP_ENTRY3(VFMSUBADD132Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xa6] = X86_OP_ENTRY3(VFMADDSUB213Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xa7] = X86_OP_ENTRY3(VFMSUBADD213Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xb6] = X86_OP_ENTRY3(VFMADDSUB231Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xb7] = X86_OP_ENTRY3(VFMSUBADD231Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0x08] = X86_OP_ENTRY3(PSIGNB, V,x, H,x, W,x, vex4 cpuid(SSSE3) mmx avx2_256 p_00_66),
[0x09] = X86_OP_ENTRY3(PSIGNW, V,x, H,x, W,x, vex4 cpuid(SSSE3) mmx avx2_256 p_00_66),
[0x0a] = X86_OP_ENTRY3(PSIGND, V,x, H,x, W,x, vex4 cpuid(SSSE3) mmx avx2_256 p_00_66),
[0x0b] = X86_OP_ENTRY3(PMULHRSW, V,x, H,x, W,x, vex4 cpuid(SSSE3) mmx avx2_256 p_00_66),
[0x0c] = X86_OP_ENTRY3(VPERMILPS, V,x, H,x, W,x, vex4 cpuid(AVX) p_00_66),
[0x0d] = X86_OP_ENTRY3(VPERMILPD, V,x, H,x, W,x, vex4 cpuid(AVX) p_66),
[0x0e] = X86_OP_ENTRY3(VTESTPS, None,None, V,x, W,x, vex4 cpuid(AVX) p_66),
[0x0f] = X86_OP_ENTRY3(VTESTPD, None,None, V,x, W,x, vex4 cpuid(AVX) p_66),
[0x18] = X86_OP_ENTRY3(VPBROADCASTD, V,x, None,None, W,d, vex6 cpuid(AVX) p_66), /* vbroadcastss */
[0x19] = X86_OP_ENTRY3(VPBROADCASTQ, V,qq, None,None, W,q, vex6 cpuid(AVX) p_66), /* vbroadcastsd */
[0x1a] = X86_OP_ENTRY3(VBROADCASTx128, V,qq, None,None, WM,dq,vex6 cpuid(AVX) p_66),
[0x1c] = X86_OP_ENTRY3(PABSB, V,x, None,None, W,x, vex4 cpuid(SSSE3) mmx avx2_256 p_00_66),
[0x1d] = X86_OP_ENTRY3(PABSW, V,x, None,None, W,x, vex4 cpuid(SSSE3) mmx avx2_256 p_00_66),
[0x1e] = X86_OP_ENTRY3(PABSD, V,x, None,None, W,x, vex4 cpuid(SSSE3) mmx avx2_256 p_00_66),
[0x28] = X86_OP_ENTRY3(PMULDQ, V,x, H,x, W,x, vex4 cpuid(SSE41) avx2_256 p_66),
[0x29] = X86_OP_ENTRY3(PCMPEQQ, V,x, H,x, W,x, vex4 cpuid(SSE41) avx2_256 p_66),
[0x2a] = X86_OP_ENTRY3(MOVDQ, V,x, None,None, WM,x, vex1 cpuid(SSE41) avx2_256 p_66), /* movntdqa */
[0x2b] = X86_OP_ENTRY3(VPACKUSDW, V,x, H,x, W,x, vex4 cpuid(SSE41) avx2_256 p_66),
[0x2c] = X86_OP_ENTRY3(VMASKMOVPS, V,x, H,x, WM,x, vex6 cpuid(AVX) p_66),
[0x2d] = X86_OP_ENTRY3(VMASKMOVPD, V,x, H,x, WM,x, vex6 cpuid(AVX) p_66),
/* Incorrectly listed as Mx,Hx,Vx in the manual */
[0x2e] = X86_OP_ENTRY3(VMASKMOVPS_st, M,x, V,x, H,x, vex6 cpuid(AVX) p_66),
[0x2f] = X86_OP_ENTRY3(VMASKMOVPD_st, M,x, V,x, H,x, vex6 cpuid(AVX) p_66),
[0x38] = X86_OP_ENTRY3(PMINSB, V,x, H,x, W,x, vex4 cpuid(SSE41) avx2_256 p_66),
[0x39] = X86_OP_ENTRY3(PMINSD, V,x, H,x, W,x, vex4 cpuid(SSE41) avx2_256 p_66),
[0x3a] = X86_OP_ENTRY3(PMINUW, V,x, H,x, W,x, vex4 cpuid(SSE41) avx2_256 p_66),
[0x3b] = X86_OP_ENTRY3(PMINUD, V,x, H,x, W,x, vex4 cpuid(SSE41) avx2_256 p_66),
[0x3c] = X86_OP_ENTRY3(PMAXSB, V,x, H,x, W,x, vex4 cpuid(SSE41) avx2_256 p_66),
[0x3d] = X86_OP_ENTRY3(PMAXSD, V,x, H,x, W,x, vex4 cpuid(SSE41) avx2_256 p_66),
[0x3e] = X86_OP_ENTRY3(PMAXUW, V,x, H,x, W,x, vex4 cpuid(SSE41) avx2_256 p_66),
[0x3f] = X86_OP_ENTRY3(PMAXUD, V,x, H,x, W,x, vex4 cpuid(SSE41) avx2_256 p_66),
[0x58] = X86_OP_ENTRY3(VPBROADCASTD, V,x, None,None, W,d, vex6 cpuid(AVX2) p_66),
[0x59] = X86_OP_ENTRY3(VPBROADCASTQ, V,x, None,None, W,q, vex6 cpuid(AVX2) p_66),
[0x5a] = X86_OP_ENTRY3(VBROADCASTx128, V,qq, None,None, WM,dq,vex6 cpuid(AVX2) p_66),
[0x78] = X86_OP_ENTRY3(VPBROADCASTB, V,x, None,None, W,b, vex6 cpuid(AVX2) p_66),
[0x79] = X86_OP_ENTRY3(VPBROADCASTW, V,x, None,None, W,w, vex6 cpuid(AVX2) p_66),
[0x8c] = X86_OP_ENTRY3(VPMASKMOV, V,x, H,x, WM,x, vex6 cpuid(AVX2) p_66),
[0x8e] = X86_OP_ENTRY3(VPMASKMOV_st, M,x, V,x, H,x, vex6 cpuid(AVX2) p_66),
/* Should be exception type 2 or 3 but they do not have legacy SSE equivalents? */
[0x98] = X86_OP_ENTRY3(VFMADD132Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0x99] = X86_OP_ENTRY3(VFMADD132Sx, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0x9a] = X86_OP_ENTRY3(VFMSUB132Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0x9b] = X86_OP_ENTRY3(VFMSUB132Sx, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0x9c] = X86_OP_ENTRY3(VFNMADD132Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0x9d] = X86_OP_ENTRY3(VFNMADD132Sx, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0x9e] = X86_OP_ENTRY3(VFNMSUB132Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0x9f] = X86_OP_ENTRY3(VFNMSUB132Sx, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xa8] = X86_OP_ENTRY3(VFMADD213Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xa9] = X86_OP_ENTRY3(VFMADD213Sx, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xaa] = X86_OP_ENTRY3(VFMSUB213Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xab] = X86_OP_ENTRY3(VFMSUB213Sx, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xac] = X86_OP_ENTRY3(VFNMADD213Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xad] = X86_OP_ENTRY3(VFNMADD213Sx, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xae] = X86_OP_ENTRY3(VFNMSUB213Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xaf] = X86_OP_ENTRY3(VFNMSUB213Sx, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xb8] = X86_OP_ENTRY3(VFMADD231Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xb9] = X86_OP_ENTRY3(VFMADD231Sx, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xba] = X86_OP_ENTRY3(VFMSUB231Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xbb] = X86_OP_ENTRY3(VFMSUB231Sx, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xbc] = X86_OP_ENTRY3(VFNMADD231Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xbd] = X86_OP_ENTRY3(VFNMADD231Sx, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xbe] = X86_OP_ENTRY3(VFNMSUB231Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xbf] = X86_OP_ENTRY3(VFNMSUB231Sx, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xdb] = X86_OP_ENTRY3(VAESIMC, V,dq, None,None, W,dq, vex4 cpuid(AES) p_66),
[0xdc] = X86_OP_ENTRY3(VAESENC, V,x, H,x, W,x, vex4 cpuid(AES) p_66),
[0xdd] = X86_OP_ENTRY3(VAESENCLAST, V,x, H,x, W,x, vex4 cpuid(AES) p_66),
[0xde] = X86_OP_ENTRY3(VAESDEC, V,x, H,x, W,x, vex4 cpuid(AES) p_66),
[0xdf] = X86_OP_ENTRY3(VAESDECLAST, V,x, H,x, W,x, vex4 cpuid(AES) p_66),
};
/* five rows for no prefix, 66, F3, F2, 66+F2 */
static const X86OpEntry opcodes_0F38_F0toFF[16][5] = {
[0] = {
X86_OP_ENTRY3(MOVBE, G,y, M,y, None,None, cpuid(MOVBE)),
X86_OP_ENTRY3(MOVBE, G,w, M,w, None,None, cpuid(MOVBE)),
{},
X86_OP_ENTRY2(CRC32, G,d, E,b, cpuid(SSE42)),
X86_OP_ENTRY2(CRC32, G,d, E,b, cpuid(SSE42)),
},
[1] = {
X86_OP_ENTRY3(MOVBE, M,y, G,y, None,None, cpuid(MOVBE)),
X86_OP_ENTRY3(MOVBE, M,w, G,w, None,None, cpuid(MOVBE)),
{},
X86_OP_ENTRY2(CRC32, G,d, E,y, cpuid(SSE42)),
X86_OP_ENTRY2(CRC32, G,d, E,w, cpuid(SSE42)),
},
[2] = {
X86_OP_ENTRY3(ANDN, G,y, B,y, E,y, vex13 cpuid(BMI1)),
{},
{},
{},
{},
},
[3] = {
X86_OP_GROUP3(group17, B,y, E,y, None,None, vex13 cpuid(BMI1)),
{},
{},
{},
{},
},
[5] = {
X86_OP_ENTRY3(BZHI, G,y, E,y, B,y, vex13 cpuid(BMI1)),
{},
X86_OP_ENTRY3(PEXT, G,y, B,y, E,y, vex13 cpuid(BMI2)),
X86_OP_ENTRY3(PDEP, G,y, B,y, E,y, vex13 cpuid(BMI2)),
{},
},
[6] = {
{},
X86_OP_ENTRY2(ADCX, G,y, E,y, cpuid(ADX)),
X86_OP_ENTRY2(ADOX, G,y, E,y, cpuid(ADX)),
X86_OP_ENTRY3(MULX, /* B,y, */ G,y, E,y, 2,y, vex13 cpuid(BMI2)),
{},
},
[7] = {
X86_OP_ENTRY3(BEXTR, G,y, E,y, B,y, vex13 cpuid(BMI1)),
X86_OP_ENTRY3(SHLX, G,y, E,y, B,y, vex13 cpuid(BMI1)),
X86_OP_ENTRY3(SARX, G,y, E,y, B,y, vex13 cpuid(BMI1)),
X86_OP_ENTRY3(SHRX, G,y, E,y, B,y, vex13 cpuid(BMI1)),
{},
},
};
static void decode_0F38(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
*b = x86_ldub_code(env, s);
if (*b < 0xf0) {
*entry = opcodes_0F38_00toEF[*b];
} else {
int row = 0;
if (s->prefix & PREFIX_REPZ) {
/* The REPZ (F3) prefix has priority over 66 */
row = 2;
} else {
row += s->prefix & PREFIX_REPNZ ? 3 : 0;
row += s->prefix & PREFIX_DATA ? 1 : 0;
}
*entry = opcodes_0F38_F0toFF[*b & 15][row];
}
}
static void decode_VINSERTPS(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
static const X86OpEntry
vinsertps_reg = X86_OP_ENTRY4(VINSERTPS_r, V,dq, H,dq, U,dq, vex5 cpuid(SSE41) p_66),
vinsertps_mem = X86_OP_ENTRY4(VINSERTPS_m, V,dq, H,dq, M,d, vex5 cpuid(SSE41) p_66);
int modrm = get_modrm(s, env);
*entry = (modrm >> 6) == 3 ? vinsertps_reg : vinsertps_mem;
}
static const X86OpEntry opcodes_0F3A[256] = {
/*
* These are VEX-only, but incorrectly listed in the manual as exception type 4.
* Also the "qq" instructions are sometimes omitted by Table 2-17, but are VEX256
* only.
*/
[0x00] = X86_OP_ENTRY3(VPERMQ, V,qq, W,qq, I,b, vex6 cpuid(AVX2) p_66),
[0x01] = X86_OP_ENTRY3(VPERMQ, V,qq, W,qq, I,b, vex6 cpuid(AVX2) p_66), /* VPERMPD */
[0x02] = X86_OP_ENTRY4(VBLENDPS, V,x, H,x, W,x, vex6 cpuid(AVX2) p_66), /* VPBLENDD */
[0x04] = X86_OP_ENTRY3(VPERMILPS_i, V,x, W,x, I,b, vex6 cpuid(AVX) p_66),
[0x05] = X86_OP_ENTRY3(VPERMILPD_i, V,x, W,x, I,b, vex6 cpuid(AVX) p_66),
[0x06] = X86_OP_ENTRY4(VPERM2x128, V,qq, H,qq, W,qq, vex6 cpuid(AVX) p_66),
[0x14] = X86_OP_ENTRY3(PEXTRB, E,b, V,dq, I,b, vex5 cpuid(SSE41) zext0 p_66),
[0x15] = X86_OP_ENTRY3(PEXTRW, E,w, V,dq, I,b, vex5 cpuid(SSE41) zext0 p_66),
[0x16] = X86_OP_ENTRY3(PEXTR, E,y, V,dq, I,b, vex5 cpuid(SSE41) p_66),
[0x17] = X86_OP_ENTRY3(VEXTRACTPS, E,d, V,dq, I,b, vex5 cpuid(SSE41) p_66),
[0x1d] = X86_OP_ENTRY3(VCVTPS2PH, W,ph, V,x, I,b, vex11 cpuid(F16C) p_66),
[0x20] = X86_OP_ENTRY4(PINSRB, V,dq, H,dq, E,b, vex5 cpuid(SSE41) zext2 p_66),
[0x21] = X86_OP_GROUP0(VINSERTPS),
[0x22] = X86_OP_ENTRY4(PINSR, V,dq, H,dq, E,y, vex5 cpuid(SSE41) p_66),
[0x40] = X86_OP_ENTRY4(VDDPS, V,x, H,x, W,x, vex2 cpuid(SSE41) p_66),
[0x41] = X86_OP_ENTRY4(VDDPD, V,dq, H,dq, W,dq, vex2 cpuid(SSE41) p_66),
[0x42] = X86_OP_ENTRY4(VMPSADBW, V,x, H,x, W,x, vex2 cpuid(SSE41) avx2_256 p_66),
[0x44] = X86_OP_ENTRY4(PCLMULQDQ, V,dq, H,dq, W,dq, vex4 cpuid(PCLMULQDQ) p_66),
[0x46] = X86_OP_ENTRY4(VPERM2x128, V,qq, H,qq, W,qq, vex6 cpuid(AVX2) p_66),
[0x60] = X86_OP_ENTRY4(PCMPESTRM, None,None, V,dq, W,dq, vex4_unal cpuid(SSE42) p_66),
[0x61] = X86_OP_ENTRY4(PCMPESTRI, None,None, V,dq, W,dq, vex4_unal cpuid(SSE42) p_66),
[0x62] = X86_OP_ENTRY4(PCMPISTRM, None,None, V,dq, W,dq, vex4_unal cpuid(SSE42) p_66),
[0x63] = X86_OP_ENTRY4(PCMPISTRI, None,None, V,dq, W,dq, vex4_unal cpuid(SSE42) p_66),
[0x08] = X86_OP_ENTRY3(VROUNDPS, V,x, W,x, I,b, vex2 cpuid(SSE41) p_66),
[0x09] = X86_OP_ENTRY3(VROUNDPD, V,x, W,x, I,b, vex2 cpuid(SSE41) p_66),
/*
* Not listed as four operand in the manual. Also writes and reads 128-bits
* from the first two operands due to the V operand picking higher entries of
* the H operand; the "Vss,Hss,Wss" description from the manual is incorrect.
* For other unary operations such as VSQRTSx this is hidden by the "REPScalar"
* value of vex_special, because the table lists the operand types of VSQRTPx.
*/
[0x0a] = X86_OP_ENTRY4(VROUNDSS, V,x, H,x, W,ss, vex3 cpuid(SSE41) p_66),
[0x0b] = X86_OP_ENTRY4(VROUNDSD, V,x, H,x, W,sd, vex3 cpuid(SSE41) p_66),
[0x0c] = X86_OP_ENTRY4(VBLENDPS, V,x, H,x, W,x, vex4 cpuid(SSE41) p_66),
[0x0d] = X86_OP_ENTRY4(VBLENDPD, V,x, H,x, W,x, vex4 cpuid(SSE41) p_66),
[0x0e] = X86_OP_ENTRY4(VPBLENDW, V,x, H,x, W,x, vex4 cpuid(SSE41) avx2_256 p_66),
[0x0f] = X86_OP_ENTRY4(PALIGNR, V,x, H,x, W,x, vex4 cpuid(SSSE3) mmx avx2_256 p_00_66),
[0x18] = X86_OP_ENTRY4(VINSERTx128, V,qq, H,qq, W,qq, vex6 cpuid(AVX) p_66),
[0x19] = X86_OP_ENTRY3(VEXTRACTx128, W,dq, V,qq, I,b, vex6 cpuid(AVX) p_66),
[0x38] = X86_OP_ENTRY4(VINSERTx128, V,qq, H,qq, W,qq, vex6 cpuid(AVX2) p_66),
[0x39] = X86_OP_ENTRY3(VEXTRACTx128, W,dq, V,qq, I,b, vex6 cpuid(AVX2) p_66),
/* Listed incorrectly as type 4 */
[0x4a] = X86_OP_ENTRY4(VBLENDVPS, V,x, H,x, W,x, vex6 cpuid(AVX) p_66),
[0x4b] = X86_OP_ENTRY4(VBLENDVPD, V,x, H,x, W,x, vex6 cpuid(AVX) p_66),
[0x4c] = X86_OP_ENTRY4(VPBLENDVB, V,x, H,x, W,x, vex6 cpuid(AVX) p_66 avx2_256),
[0xdf] = X86_OP_ENTRY3(VAESKEYGEN, V,dq, W,dq, I,b, vex4 cpuid(AES) p_66),
[0xF0] = X86_OP_ENTRY3(RORX, G,y, E,y, I,b, vex13 cpuid(BMI2) p_f2),
};
static void decode_0F3A(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
*b = x86_ldub_code(env, s);
*entry = opcodes_0F3A[*b];
}
/*
* There are some mistakes in the operands in the manual, and the load/store/register
* cases are easiest to keep separate, so the entries for 10-17 follow simplicity and
* efficiency of implementation rather than copying what the manual says.
*
* In particular:
*
* 1) "VMOVSS m32, xmm1" and "VMOVSD m64, xmm1" do not support VEX.vvvv != 1111b,
* but this is not mentioned in the tables.
*
* 2) MOVHLPS, MOVHPS, MOVHPD, MOVLPD, MOVLPS read the high quadword of one of their
* operands, which must therefore be dq; MOVLPD and MOVLPS also write the high
* quadword of the V operand.
*/
static void decode_0F10(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
static const X86OpEntry opcodes_0F10_reg[4] = {
X86_OP_ENTRY3(MOVDQ, V,x, None,None, W,x, vex4_unal), /* MOVUPS */
X86_OP_ENTRY3(MOVDQ, V,x, None,None, W,x, vex4_unal), /* MOVUPD */
X86_OP_ENTRY3(VMOVSS, V,x, H,x, W,x, vex4),
X86_OP_ENTRY3(VMOVLPx, V,x, H,x, W,x, vex4), /* MOVSD */
};
static const X86OpEntry opcodes_0F10_mem[4] = {
X86_OP_ENTRY3(MOVDQ, V,x, None,None, W,x, vex4_unal), /* MOVUPS */
X86_OP_ENTRY3(MOVDQ, V,x, None,None, W,x, vex4_unal), /* MOVUPD */
X86_OP_ENTRY3(VMOVSS_ld, V,x, H,x, M,ss, vex4),
X86_OP_ENTRY3(VMOVSD_ld, V,x, H,x, M,sd, vex4),
};
if ((get_modrm(s, env) >> 6) == 3) {
*entry = *decode_by_prefix(s, opcodes_0F10_reg);
} else {
*entry = *decode_by_prefix(s, opcodes_0F10_mem);
}
}
static void decode_0F11(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
static const X86OpEntry opcodes_0F11_reg[4] = {
X86_OP_ENTRY3(MOVDQ, W,x, None,None, V,x, vex4), /* MOVPS */
X86_OP_ENTRY3(MOVDQ, W,x, None,None, V,x, vex4), /* MOVPD */
X86_OP_ENTRY3(VMOVSS, W,x, H,x, V,x, vex4),
X86_OP_ENTRY3(VMOVLPx, W,x, H,x, V,q, vex4), /* MOVSD */
};
static const X86OpEntry opcodes_0F11_mem[4] = {
X86_OP_ENTRY3(MOVDQ, W,x, None,None, V,x, vex4), /* MOVPS */
X86_OP_ENTRY3(MOVDQ, W,x, None,None, V,x, vex4), /* MOVPD */
X86_OP_ENTRY3(VMOVSS_st, M,ss, None,None, V,x, vex4),
X86_OP_ENTRY3(VMOVLPx_st, M,sd, None,None, V,x, vex4), /* MOVSD */
};
if ((get_modrm(s, env) >> 6) == 3) {
*entry = *decode_by_prefix(s, opcodes_0F11_reg);
} else {
*entry = *decode_by_prefix(s, opcodes_0F11_mem);
}
}
static void decode_0F12(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
static const X86OpEntry opcodes_0F12_mem[4] = {
/*
* Use dq for operand for compatibility with gen_MOVSD and
* to allow VEX128 only.
*/
X86_OP_ENTRY3(VMOVLPx_ld, V,dq, H,dq, M,q, vex4), /* MOVLPS */
X86_OP_ENTRY3(VMOVLPx_ld, V,dq, H,dq, M,q, vex4), /* MOVLPD */
X86_OP_ENTRY3(VMOVSLDUP, V,x, None,None, W,x, vex4 cpuid(SSE3)),
X86_OP_ENTRY3(VMOVDDUP, V,x, None,None, WM,q, vex4 cpuid(SSE3)), /* qq if VEX.256 */
};
static const X86OpEntry opcodes_0F12_reg[4] = {
X86_OP_ENTRY3(VMOVHLPS, V,dq, H,dq, U,dq, vex4),
X86_OP_ENTRY3(VMOVLPx, W,x, H,x, U,q, vex4), /* MOVLPD */
X86_OP_ENTRY3(VMOVSLDUP, V,x, None,None, U,x, vex4 cpuid(SSE3)),
X86_OP_ENTRY3(VMOVDDUP, V,x, None,None, U,x, vex4 cpuid(SSE3)),
};
if ((get_modrm(s, env) >> 6) == 3) {
*entry = *decode_by_prefix(s, opcodes_0F12_reg);
} else {
*entry = *decode_by_prefix(s, opcodes_0F12_mem);
if ((s->prefix & PREFIX_REPNZ) && s->vex_l) {
entry->s2 = X86_SIZE_qq;
}
}
}
static void decode_0F16(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
static const X86OpEntry opcodes_0F16_mem[4] = {
/*
* Operand 1 technically only reads the low 64 bits, but uses dq so that
* it is easier to check for op0 == op1 in an endianness-neutral manner.
*/
X86_OP_ENTRY3(VMOVHPx_ld, V,dq, H,dq, M,q, vex4), /* MOVHPS */
X86_OP_ENTRY3(VMOVHPx_ld, V,dq, H,dq, M,q, vex4), /* MOVHPD */
X86_OP_ENTRY3(VMOVSHDUP, V,x, None,None, W,x, vex4 cpuid(SSE3)),
{},
};
static const X86OpEntry opcodes_0F16_reg[4] = {
/* Same as above, operand 1 could be Hq if it wasn't for big-endian. */
X86_OP_ENTRY3(VMOVLHPS, V,dq, H,dq, U,q, vex4),
X86_OP_ENTRY3(VMOVHPx, V,x, H,x, U,x, vex4), /* MOVHPD */
X86_OP_ENTRY3(VMOVSHDUP, V,x, None,None, U,x, vex4 cpuid(SSE3)),
{},
};
if ((get_modrm(s, env) >> 6) == 3) {
*entry = *decode_by_prefix(s, opcodes_0F16_reg);
} else {
*entry = *decode_by_prefix(s, opcodes_0F16_mem);
}
}
static void decode_0F2A(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
static const X86OpEntry opcodes_0F2A[4] = {
X86_OP_ENTRY3(CVTPI2Px, V,x, None,None, Q,q),
X86_OP_ENTRY3(CVTPI2Px, V,x, None,None, Q,q),
X86_OP_ENTRY3(VCVTSI2Sx, V,x, H,x, E,y, vex3),
X86_OP_ENTRY3(VCVTSI2Sx, V,x, H,x, E,y, vex3),
};
*entry = *decode_by_prefix(s, opcodes_0F2A);
}
static void decode_0F2B(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
static const X86OpEntry opcodes_0F2B[4] = {
X86_OP_ENTRY3(MOVDQ, M,x, None,None, V,x, vex4), /* MOVNTPS */
X86_OP_ENTRY3(MOVDQ, M,x, None,None, V,x, vex4), /* MOVNTPD */
X86_OP_ENTRY3(VMOVSS_st, M,ss, None,None, V,x, vex4 cpuid(SSE4A)), /* MOVNTSS */
X86_OP_ENTRY3(VMOVLPx_st, M,sd, None,None, V,x, vex4 cpuid(SSE4A)), /* MOVNTSD */
};
*entry = *decode_by_prefix(s, opcodes_0F2B);
}
static void decode_0F2C(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
static const X86OpEntry opcodes_0F2C[4] = {
/* Listed as ps/pd in the manual, but CVTTPS2PI only reads 64-bit. */
X86_OP_ENTRY3(CVTTPx2PI, P,q, None,None, W,q),
X86_OP_ENTRY3(CVTTPx2PI, P,q, None,None, W,dq),
X86_OP_ENTRY3(VCVTTSx2SI, G,y, None,None, W,ss, vex3),
X86_OP_ENTRY3(VCVTTSx2SI, G,y, None,None, W,sd, vex3),
};
*entry = *decode_by_prefix(s, opcodes_0F2C);
}
static void decode_0F2D(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
static const X86OpEntry opcodes_0F2D[4] = {
/* Listed as ps/pd in the manual, but CVTPS2PI only reads 64-bit. */
X86_OP_ENTRY3(CVTPx2PI, P,q, None,None, W,q),
X86_OP_ENTRY3(CVTPx2PI, P,q, None,None, W,dq),
X86_OP_ENTRY3(VCVTSx2SI, G,y, None,None, W,ss, vex3),
X86_OP_ENTRY3(VCVTSx2SI, G,y, None,None, W,sd, vex3),
};
*entry = *decode_by_prefix(s, opcodes_0F2D);
}
static void decode_sse_unary(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
if (!(s->prefix & (PREFIX_REPZ | PREFIX_REPNZ))) {
entry->op1 = X86_TYPE_None;
entry->s1 = X86_SIZE_None;
}
switch (*b) {
case 0x51: entry->gen = gen_VSQRT; break;
case 0x52: entry->gen = gen_VRSQRT; break;
case 0x53: entry->gen = gen_VRCP; break;
case 0x5A: entry->gen = gen_VCVTfp2fp; break;
}
}
static void decode_0F5B(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
static const X86OpEntry opcodes_0F5B[4] = {
X86_OP_ENTRY2(VCVTDQ2PS, V,x, W,x, vex2),
X86_OP_ENTRY2(VCVTPS2DQ, V,x, W,x, vex2),
X86_OP_ENTRY2(VCVTTPS2DQ, V,x, W,x, vex2),
{},
};
*entry = *decode_by_prefix(s, opcodes_0F5B);
}
static void decode_0FE6(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
static const X86OpEntry opcodes_0FE6[4] = {
{},
X86_OP_ENTRY2(VCVTTPD2DQ, V,x, W,x, vex2),
X86_OP_ENTRY2(VCVTDQ2PD, V,x, W,x, vex2),
X86_OP_ENTRY2(VCVTPD2DQ, V,x, W,x, vex2),
};
*entry = *decode_by_prefix(s, opcodes_0FE6);
}
static const X86OpEntry opcodes_0F[256] = {
[0x0E] = X86_OP_ENTRY0(EMMS, cpuid(3DNOW)), /* femms */
/*
* 3DNow!'s opcode byte comes *after* modrm and displacements, making it
* more like an Ib operand. Dispatch to the right helper in a single gen_*
* function.
*/
[0x0F] = X86_OP_ENTRY3(3dnow, P,q, Q,q, I,b, cpuid(3DNOW)),
[0x10] = X86_OP_GROUP0(0F10),
[0x11] = X86_OP_GROUP0(0F11),
[0x12] = X86_OP_GROUP0(0F12),
[0x13] = X86_OP_ENTRY3(VMOVLPx_st, M,q, None,None, V,q, vex4 p_00_66),
[0x14] = X86_OP_ENTRY3(VUNPCKLPx, V,x, H,x, W,x, vex4 p_00_66),
[0x15] = X86_OP_ENTRY3(VUNPCKHPx, V,x, H,x, W,x, vex4 p_00_66),
[0x16] = X86_OP_GROUP0(0F16),
/* Incorrectly listed as Mq,Vq in the manual */
[0x17] = X86_OP_ENTRY3(VMOVHPx_st, M,q, None,None, V,dq, vex4 p_00_66),
[0x50] = X86_OP_ENTRY3(MOVMSK, G,y, None,None, U,x, vex7 p_00_66),
[0x51] = X86_OP_GROUP3(sse_unary, V,x, H,x, W,x, vex2_rep3 p_00_66_f3_f2),
[0x52] = X86_OP_GROUP3(sse_unary, V,x, H,x, W,x, vex5 p_00_f3),
[0x53] = X86_OP_GROUP3(sse_unary, V,x, H,x, W,x, vex5 p_00_f3),
[0x54] = X86_OP_ENTRY3(PAND, V,x, H,x, W,x, vex4 p_00_66), /* vand */
[0x55] = X86_OP_ENTRY3(PANDN, V,x, H,x, W,x, vex4 p_00_66), /* vandn */
[0x56] = X86_OP_ENTRY3(POR, V,x, H,x, W,x, vex4 p_00_66), /* vor */
[0x57] = X86_OP_ENTRY3(PXOR, V,x, H,x, W,x, vex4 p_00_66), /* vxor */
[0x60] = X86_OP_ENTRY3(PUNPCKLBW, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0x61] = X86_OP_ENTRY3(PUNPCKLWD, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0x62] = X86_OP_ENTRY3(PUNPCKLDQ, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0x63] = X86_OP_ENTRY3(PACKSSWB, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0x64] = X86_OP_ENTRY3(PCMPGTB, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0x65] = X86_OP_ENTRY3(PCMPGTW, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0x66] = X86_OP_ENTRY3(PCMPGTD, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0x67] = X86_OP_ENTRY3(PACKUSWB, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0x70] = X86_OP_GROUP0(0F70),
[0x71] = X86_OP_GROUP0(group12),
[0x72] = X86_OP_GROUP0(group13),
[0x73] = X86_OP_GROUP0(group14),
[0x74] = X86_OP_ENTRY3(PCMPEQB, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0x75] = X86_OP_ENTRY3(PCMPEQW, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0x76] = X86_OP_ENTRY3(PCMPEQD, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0x77] = X86_OP_GROUP0(0F77),
[0x28] = X86_OP_ENTRY3(MOVDQ, V,x, None,None, W,x, vex1 p_00_66), /* MOVAPS */
[0x29] = X86_OP_ENTRY3(MOVDQ, W,x, None,None, V,x, vex1 p_00_66), /* MOVAPS */
[0x2A] = X86_OP_GROUP0(0F2A),
[0x2B] = X86_OP_GROUP0(0F2B),
[0x2C] = X86_OP_GROUP0(0F2C),
[0x2D] = X86_OP_GROUP0(0F2D),
[0x2E] = X86_OP_ENTRY3(VUCOMI, None,None, V,x, W,x, vex4 p_00_66),
[0x2F] = X86_OP_ENTRY3(VCOMI, None,None, V,x, W,x, vex4 p_00_66),
[0x38] = X86_OP_GROUP0(0F38),
[0x3a] = X86_OP_GROUP0(0F3A),
[0x58] = X86_OP_ENTRY3(VADD, V,x, H,x, W,x, vex2_rep3 p_00_66_f3_f2),
[0x59] = X86_OP_ENTRY3(VMUL, V,x, H,x, W,x, vex2_rep3 p_00_66_f3_f2),
[0x5a] = X86_OP_GROUP3(sse_unary, V,x, H,x, W,x, vex3 p_00_66_f3_f2),
[0x5b] = X86_OP_GROUP0(0F5B),
[0x5c] = X86_OP_ENTRY3(VSUB, V,x, H,x, W,x, vex2_rep3 p_00_66_f3_f2),
[0x5d] = X86_OP_ENTRY3(VMIN, V,x, H,x, W,x, vex2_rep3 p_00_66_f3_f2),
[0x5e] = X86_OP_ENTRY3(VDIV, V,x, H,x, W,x, vex2_rep3 p_00_66_f3_f2),
[0x5f] = X86_OP_ENTRY3(VMAX, V,x, H,x, W,x, vex2_rep3 p_00_66_f3_f2),
[0x68] = X86_OP_ENTRY3(PUNPCKHBW, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0x69] = X86_OP_ENTRY3(PUNPCKHWD, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0x6a] = X86_OP_ENTRY3(PUNPCKHDQ, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0x6b] = X86_OP_ENTRY3(PACKSSDW, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0x6c] = X86_OP_ENTRY3(PUNPCKLQDQ, V,x, H,x, W,x, vex4 p_66 avx2_256),
[0x6d] = X86_OP_ENTRY3(PUNPCKHQDQ, V,x, H,x, W,x, vex4 p_66 avx2_256),
[0x6e] = X86_OP_ENTRY3(MOVD_to, V,x, None,None, E,y, vex5 mmx p_00_66), /* wrong dest Vy on SDM! */
[0x6f] = X86_OP_GROUP0(0F6F),
[0x78] = X86_OP_GROUP0(0F78),
[0x79] = X86_OP_GROUP2(0F79, V,x, U,x, cpuid(SSE4A)),
[0x7c] = X86_OP_ENTRY3(VHADD, V,x, H,x, W,x, vex2 cpuid(SSE3) p_66_f2),
[0x7d] = X86_OP_ENTRY3(VHSUB, V,x, H,x, W,x, vex2 cpuid(SSE3) p_66_f2),
[0x7e] = X86_OP_GROUP0(0F7E),
[0x7f] = X86_OP_GROUP0(0F7F),
[0xae] = X86_OP_GROUP0(group15),
[0xc2] = X86_OP_ENTRY4(VCMP, V,x, H,x, W,x, vex2_rep3 p_00_66_f3_f2),
[0xc4] = X86_OP_ENTRY4(PINSRW, V,dq,H,dq,E,w, vex5 mmx p_00_66),
[0xc5] = X86_OP_ENTRY3(PEXTRW, G,d, U,dq,I,b, vex5 mmx p_00_66),
[0xc6] = X86_OP_ENTRY4(VSHUF, V,x, H,x, W,x, vex4 p_00_66),
[0xd0] = X86_OP_ENTRY3(VADDSUB, V,x, H,x, W,x, vex2 cpuid(SSE3) p_66_f2),
[0xd1] = X86_OP_ENTRY3(PSRLW_r, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xd2] = X86_OP_ENTRY3(PSRLD_r, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xd3] = X86_OP_ENTRY3(PSRLQ_r, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xd4] = X86_OP_ENTRY3(PADDQ, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xd5] = X86_OP_ENTRY3(PMULLW, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xd6] = X86_OP_GROUP0(0FD6),
[0xd7] = X86_OP_ENTRY3(PMOVMSKB, G,d, None,None, U,x, vex7 mmx avx2_256 p_00_66),
[0xe0] = X86_OP_ENTRY3(PAVGB, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xe1] = X86_OP_ENTRY3(PSRAW_r, V,x, H,x, W,x, vex7 mmx avx2_256 p_00_66),
[0xe2] = X86_OP_ENTRY3(PSRAD_r, V,x, H,x, W,x, vex7 mmx avx2_256 p_00_66),
[0xe3] = X86_OP_ENTRY3(PAVGW, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xe4] = X86_OP_ENTRY3(PMULHUW, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xe5] = X86_OP_ENTRY3(PMULHW, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xe6] = X86_OP_GROUP0(0FE6),
[0xe7] = X86_OP_ENTRY3(MOVDQ, W,x, None,None, V,x, vex1 mmx p_00_66), /* MOVNTQ/MOVNTDQ */
[0xf0] = X86_OP_ENTRY3(MOVDQ, V,x, None,None, WM,x, vex4_unal cpuid(SSE3) p_f2), /* LDDQU */
[0xf1] = X86_OP_ENTRY3(PSLLW_r, V,x, H,x, W,x, vex7 mmx avx2_256 p_00_66),
[0xf2] = X86_OP_ENTRY3(PSLLD_r, V,x, H,x, W,x, vex7 mmx avx2_256 p_00_66),
[0xf3] = X86_OP_ENTRY3(PSLLQ_r, V,x, H,x, W,x, vex7 mmx avx2_256 p_00_66),
[0xf4] = X86_OP_ENTRY3(PMULUDQ, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xf5] = X86_OP_ENTRY3(PMADDWD, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xf6] = X86_OP_ENTRY3(PSADBW, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xf7] = X86_OP_ENTRY3(MASKMOV, None,None, V,dq, U,dq, vex4_unal avx2_256 mmx p_00_66),
/* Incorrectly missing from 2-17 */
[0xd8] = X86_OP_ENTRY3(PSUBUSB, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xd9] = X86_OP_ENTRY3(PSUBUSW, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xda] = X86_OP_ENTRY3(PMINUB, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xdb] = X86_OP_ENTRY3(PAND, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xdc] = X86_OP_ENTRY3(PADDUSB, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xdd] = X86_OP_ENTRY3(PADDUSW, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xde] = X86_OP_ENTRY3(PMAXUB, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xdf] = X86_OP_ENTRY3(PANDN, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xe8] = X86_OP_ENTRY3(PSUBSB, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xe9] = X86_OP_ENTRY3(PSUBSW, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xea] = X86_OP_ENTRY3(PMINSW, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xeb] = X86_OP_ENTRY3(POR, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xec] = X86_OP_ENTRY3(PADDSB, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xed] = X86_OP_ENTRY3(PADDSW, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xee] = X86_OP_ENTRY3(PMAXSW, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xef] = X86_OP_ENTRY3(PXOR, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xf8] = X86_OP_ENTRY3(PSUBB, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xf9] = X86_OP_ENTRY3(PSUBW, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xfa] = X86_OP_ENTRY3(PSUBD, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xfb] = X86_OP_ENTRY3(PSUBQ, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xfc] = X86_OP_ENTRY3(PADDB, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xfd] = X86_OP_ENTRY3(PADDW, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
[0xfe] = X86_OP_ENTRY3(PADDD, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66),
/* 0xff = UD0 */
};
static void do_decode_0F(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
*entry = opcodes_0F[*b];
}
static void decode_0F(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
*b = x86_ldub_code(env, s);
do_decode_0F(s, env, entry, b);
}
static const X86OpEntry opcodes_root[256] = {
[0x0F] = X86_OP_GROUP0(0F),
};
#undef mmx
#undef vex1
#undef vex2
#undef vex3
#undef vex4
#undef vex4_unal
#undef vex5
#undef vex6
#undef vex7
#undef vex8
#undef vex11
#undef vex12
#undef vex13
/*
* Decode the fixed part of the opcode and place the last
* in b.
*/
static void decode_root(DisasContext *s, CPUX86State *env, X86OpEntry *entry, uint8_t *b)
{
*entry = opcodes_root[*b];
}
static int decode_modrm(DisasContext *s, CPUX86State *env, X86DecodedInsn *decode,
X86DecodedOp *op, X86OpType type)
{
int modrm = get_modrm(s, env);
if ((modrm >> 6) == 3) {
if (s->prefix & PREFIX_LOCK) {
decode->e.gen = gen_illegal;
return 0xff;
}
op->n = (modrm & 7);
if (type != X86_TYPE_Q && type != X86_TYPE_N) {
op->n |= REX_B(s);
}
} else {
op->has_ea = true;
op->n = -1;
decode->mem = gen_lea_modrm_0(env, s, get_modrm(s, env));
}
return modrm;
}
static bool decode_op_size(DisasContext *s, X86OpEntry *e, X86OpSize size, MemOp *ot)
{
switch (size) {
case X86_SIZE_b: /* byte */
*ot = MO_8;
return true;
case X86_SIZE_d: /* 32-bit */
case X86_SIZE_ss: /* SSE/AVX scalar single precision */
*ot = MO_32;
return true;
case X86_SIZE_p: /* Far pointer, return offset size */
case X86_SIZE_s: /* Descriptor, return offset size */
case X86_SIZE_v: /* 16/32/64-bit, based on operand size */
*ot = s->dflag;
return true;
case X86_SIZE_pi: /* MMX */
case X86_SIZE_q: /* 64-bit */
case X86_SIZE_sd: /* SSE/AVX scalar double precision */
*ot = MO_64;
return true;
case X86_SIZE_w: /* 16-bit */
*ot = MO_16;
return true;
case X86_SIZE_y: /* 32/64-bit, based on operand size */
*ot = s->dflag == MO_16 ? MO_32 : s->dflag;
return true;
case X86_SIZE_z: /* 16-bit for 16-bit operand size, else 32-bit */
*ot = s->dflag == MO_16 ? MO_16 : MO_32;
return true;
case X86_SIZE_dq: /* SSE/AVX 128-bit */
if (e->special == X86_SPECIAL_MMX &&
!(s->prefix & (PREFIX_DATA | PREFIX_REPZ | PREFIX_REPNZ))) {
*ot = MO_64;
return true;
}
if (s->vex_l && e->s0 != X86_SIZE_qq && e->s1 != X86_SIZE_qq) {
return false;
}
*ot = MO_128;
return true;
case X86_SIZE_qq: /* AVX 256-bit */
if (!s->vex_l) {
return false;
}
*ot = MO_256;
return true;
case X86_SIZE_x: /* 128/256-bit, based on operand size */
if (e->special == X86_SPECIAL_MMX &&
!(s->prefix & (PREFIX_DATA | PREFIX_REPZ | PREFIX_REPNZ))) {
*ot = MO_64;
return true;
}
/* fall through */
case X86_SIZE_ps: /* SSE/AVX packed single precision */
case X86_SIZE_pd: /* SSE/AVX packed double precision */
*ot = s->vex_l ? MO_256 : MO_128;
return true;
case X86_SIZE_ph: /* SSE/AVX packed half precision */
*ot = s->vex_l ? MO_128 : MO_64;
return true;
case X86_SIZE_d64: /* Default to 64-bit in 64-bit mode */
*ot = CODE64(s) && s->dflag == MO_32 ? MO_64 : s->dflag;
return true;
case X86_SIZE_f64: /* Ignore size override prefix in 64-bit mode */
*ot = CODE64(s) ? MO_64 : s->dflag;
return true;
default:
*ot = -1;
return true;
}
}
static bool decode_op(DisasContext *s, CPUX86State *env, X86DecodedInsn *decode,
X86DecodedOp *op, X86OpType type, int b)
{
int modrm;
switch (type) {
case X86_TYPE_None: /* Implicit or absent */
case X86_TYPE_A: /* Implicit */
case X86_TYPE_F: /* EFLAGS/RFLAGS */
break;
case X86_TYPE_B: /* VEX.vvvv selects a GPR */
op->unit = X86_OP_INT;
op->n = s->vex_v;
break;
case X86_TYPE_C: /* REG in the modrm byte selects a control register */
op->unit = X86_OP_CR;
goto get_reg;
case X86_TYPE_D: /* REG in the modrm byte selects a debug register */
op->unit = X86_OP_DR;
goto get_reg;
case X86_TYPE_G: /* REG in the modrm byte selects a GPR */
op->unit = X86_OP_INT;
goto get_reg;
case X86_TYPE_S: /* reg selects a segment register */
op->unit = X86_OP_SEG;
goto get_reg;
case X86_TYPE_P:
op->unit = X86_OP_MMX;
goto get_reg;
case X86_TYPE_V: /* reg in the modrm byte selects an XMM/YMM register */
if (decode->e.special == X86_SPECIAL_MMX &&
!(s->prefix & (PREFIX_DATA | PREFIX_REPZ | PREFIX_REPNZ))) {
op->unit = X86_OP_MMX;
} else {
op->unit = X86_OP_SSE;
}
get_reg:
op->n = ((get_modrm(s, env) >> 3) & 7) | REX_R(s);
break;
case X86_TYPE_E: /* ALU modrm operand */
op->unit = X86_OP_INT;
goto get_modrm;
case X86_TYPE_Q: /* MMX modrm operand */
op->unit = X86_OP_MMX;
goto get_modrm;
case X86_TYPE_W: /* XMM/YMM modrm operand */
if (decode->e.special == X86_SPECIAL_MMX &&
!(s->prefix & (PREFIX_DATA | PREFIX_REPZ | PREFIX_REPNZ))) {
op->unit = X86_OP_MMX;
} else {
op->unit = X86_OP_SSE;
}
goto get_modrm;
case X86_TYPE_N: /* R/M in the modrm byte selects an MMX register */
op->unit = X86_OP_MMX;
goto get_modrm_reg;
case X86_TYPE_U: /* R/M in the modrm byte selects an XMM/YMM register */
if (decode->e.special == X86_SPECIAL_MMX &&
!(s->prefix & (PREFIX_DATA | PREFIX_REPZ | PREFIX_REPNZ))) {
op->unit = X86_OP_MMX;
} else {
op->unit = X86_OP_SSE;
}
goto get_modrm_reg;
case X86_TYPE_R: /* R/M in the modrm byte selects a register */
op->unit = X86_OP_INT;
get_modrm_reg:
modrm = get_modrm(s, env);
if ((modrm >> 6) != 3) {
return false;
}
goto get_modrm;
case X86_TYPE_WM: /* modrm byte selects an XMM/YMM memory operand */
op->unit = X86_OP_SSE;
/* fall through */
case X86_TYPE_M: /* modrm byte selects a memory operand */
modrm = get_modrm(s, env);
if ((modrm >> 6) == 3) {
return false;
}
get_modrm:
decode_modrm(s, env, decode, op, type);
break;
case X86_TYPE_O: /* Absolute address encoded in the instruction */
op->unit = X86_OP_INT;
op->has_ea = true;
op->n = -1;
decode->mem = (AddressParts) {
.def_seg = R_DS,
.base = -1,
.index = -1,
.disp = insn_get_addr(env, s, s->aflag)
};
break;
case X86_TYPE_H: /* For AVX, VEX.vvvv selects an XMM/YMM register */
if ((s->prefix & PREFIX_VEX)) {
op->unit = X86_OP_SSE;
op->n = s->vex_v;
break;
}
if (op == &decode->op[0]) {
/* shifts place the destination in VEX.vvvv, use modrm */
return decode_op(s, env, decode, op, decode->e.op1, b);
} else {
return decode_op(s, env, decode, op, decode->e.op0, b);
}
case X86_TYPE_I: /* Immediate */
op->unit = X86_OP_IMM;
decode->immediate = insn_get_signed(env, s, op->ot);
break;
case X86_TYPE_J: /* Relative offset for a jump */
op->unit = X86_OP_IMM;
decode->immediate = insn_get_signed(env, s, op->ot);
decode->immediate += s->pc - s->cs_base;
if (s->dflag == MO_16) {
decode->immediate &= 0xffff;
} else if (!CODE64(s)) {
decode->immediate &= 0xffffffffu;
}
break;
case X86_TYPE_L: /* The upper 4 bits of the immediate select a 128-bit register */
op->n = insn_get(env, s, op->ot) >> 4;
break;
case X86_TYPE_X: /* string source */
op->n = -1;
decode->mem = (AddressParts) {
.def_seg = R_DS,
.base = R_ESI,
.index = -1,
};
break;
case X86_TYPE_Y: /* string destination */
op->n = -1;
decode->mem = (AddressParts) {
.def_seg = R_ES,
.base = R_EDI,
.index = -1,
};
break;
case X86_TYPE_2op:
*op = decode->op[0];
break;
case X86_TYPE_LoBits:
op->n = (b & 7) | REX_B(s);
op->unit = X86_OP_INT;
break;
case X86_TYPE_0 ... X86_TYPE_7:
op->n = type - X86_TYPE_0;
op->unit = X86_OP_INT;
break;
case X86_TYPE_ES ... X86_TYPE_GS:
op->n = type - X86_TYPE_ES;
op->unit = X86_OP_SEG;
break;
}
return true;
}
static bool validate_sse_prefix(DisasContext *s, X86OpEntry *e)
{
uint16_t sse_prefixes;
if (!e->valid_prefix) {
return true;
}
if (s->prefix & (PREFIX_REPZ | PREFIX_REPNZ)) {
/* In SSE instructions, 0xF3 and 0xF2 cancel 0x66. */
s->prefix &= ~PREFIX_DATA;
}
/* Now, either zero or one bit is set in sse_prefixes. */
sse_prefixes = s->prefix & (PREFIX_REPZ | PREFIX_REPNZ | PREFIX_DATA);
return e->valid_prefix & (1 << sse_prefixes);
}
static bool decode_insn(DisasContext *s, CPUX86State *env, X86DecodeFunc decode_func,
X86DecodedInsn *decode)
{
X86OpEntry *e = &decode->e;
decode_func(s, env, e, &decode->b);
while (e->is_decode) {
e->is_decode = false;
e->decode(s, env, e, &decode->b);
}
if (!validate_sse_prefix(s, e)) {
return false;
}
/* First compute size of operands in order to initialize s->rip_offset. */
if (e->op0 != X86_TYPE_None) {
if (!decode_op_size(s, e, e->s0, &decode->op[0].ot)) {
return false;
}
if (e->op0 == X86_TYPE_I) {
s->rip_offset += 1 << decode->op[0].ot;
}
}
if (e->op1 != X86_TYPE_None) {
if (!decode_op_size(s, e, e->s1, &decode->op[1].ot)) {
return false;
}
if (e->op1 == X86_TYPE_I) {
s->rip_offset += 1 << decode->op[1].ot;
}
}
if (e->op2 != X86_TYPE_None) {
if (!decode_op_size(s, e, e->s2, &decode->op[2].ot)) {
return false;
}
if (e->op2 == X86_TYPE_I) {
s->rip_offset += 1 << decode->op[2].ot;
}
}
if (e->op3 != X86_TYPE_None) {
/*
* A couple instructions actually use the extra immediate byte for an Lx
* register operand; those are handled in the gen_* functions as one off.
*/
assert(e->op3 == X86_TYPE_I && e->s3 == X86_SIZE_b);
s->rip_offset += 1;
}
if (e->op0 != X86_TYPE_None &&
!decode_op(s, env, decode, &decode->op[0], e->op0, decode->b)) {
return false;
}
if (e->op1 != X86_TYPE_None &&
!decode_op(s, env, decode, &decode->op[1], e->op1, decode->b)) {
return false;
}
if (e->op2 != X86_TYPE_None &&
!decode_op(s, env, decode, &decode->op[2], e->op2, decode->b)) {
return false;
}
if (e->op3 != X86_TYPE_None) {
decode->immediate = insn_get_signed(env, s, MO_8);
}
return true;
}
static bool has_cpuid_feature(DisasContext *s, X86CPUIDFeature cpuid)
{
switch (cpuid) {
case X86_FEAT_None:
return true;
case X86_FEAT_F16C:
return (s->cpuid_ext_features & CPUID_EXT_F16C);
case X86_FEAT_FMA:
return (s->cpuid_ext_features & CPUID_EXT_FMA);
case X86_FEAT_MOVBE:
return (s->cpuid_ext_features & CPUID_EXT_MOVBE);
case X86_FEAT_PCLMULQDQ:
return (s->cpuid_ext_features & CPUID_EXT_PCLMULQDQ);
case X86_FEAT_SSE:
return (s->cpuid_ext_features & CPUID_SSE);
case X86_FEAT_SSE2:
return (s->cpuid_ext_features & CPUID_SSE2);
case X86_FEAT_SSE3:
return (s->cpuid_ext_features & CPUID_EXT_SSE3);
case X86_FEAT_SSSE3:
return (s->cpuid_ext_features & CPUID_EXT_SSSE3);
case X86_FEAT_SSE41:
return (s->cpuid_ext_features & CPUID_EXT_SSE41);
case X86_FEAT_SSE42:
return (s->cpuid_ext_features & CPUID_EXT_SSE42);
case X86_FEAT_AES:
if (!(s->cpuid_ext_features & CPUID_EXT_AES)) {
return false;
} else if (!(s->prefix & PREFIX_VEX)) {
return true;
} else if (!(s->cpuid_ext_features & CPUID_EXT_AVX)) {
return false;
} else {
return !s->vex_l || (s->cpuid_7_0_ecx_features & CPUID_7_0_ECX_VAES);
}
case X86_FEAT_AVX:
return (s->cpuid_ext_features & CPUID_EXT_AVX);
case X86_FEAT_3DNOW:
return (s->cpuid_ext2_features & CPUID_EXT2_3DNOW);
case X86_FEAT_SSE4A:
return (s->cpuid_ext3_features & CPUID_EXT3_SSE4A);
case X86_FEAT_ADX:
return (s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_ADX);
case X86_FEAT_BMI1:
return (s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_BMI1);
case X86_FEAT_BMI2:
return (s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_BMI2);
case X86_FEAT_AVX2:
return (s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_AVX2);
}
g_assert_not_reached();
}
static bool validate_vex(DisasContext *s, X86DecodedInsn *decode)
{
X86OpEntry *e = &decode->e;
switch (e->vex_special) {
case X86_VEX_REPScalar:
/*
* Instructions which differ between 00/66 and F2/F3 in the
* exception classification and the size of the memory operand.
*/
assert(e->vex_class == 1 || e->vex_class == 2);
if (s->prefix & (PREFIX_REPZ | PREFIX_REPNZ)) {
e->vex_class = 3;
if (s->vex_l) {
goto illegal;
}
assert(decode->e.s2 == X86_SIZE_x);
if (decode->op[2].has_ea) {
decode->op[2].ot = s->prefix & PREFIX_REPZ ? MO_32 : MO_64;
}
}
break;
case X86_VEX_SSEUnaligned:
/* handled in sse_needs_alignment. */
break;
case X86_VEX_AVX2_256:
if ((s->prefix & PREFIX_VEX) && s->vex_l && !has_cpuid_feature(s, X86_FEAT_AVX2)) {
goto illegal;
}
}
/* TODO: instructions that require VEX.W=0 (Table 2-16) */
switch (e->vex_class) {
case 0:
if (s->prefix & PREFIX_VEX) {
goto illegal;
}
return true;
case 1:
case 2:
case 3:
case 4:
case 5:
case 7:
if (s->prefix & PREFIX_VEX) {
if (!(s->flags & HF_AVX_EN_MASK)) {
goto illegal;
}
} else if (e->special != X86_SPECIAL_MMX ||
(s->prefix & (PREFIX_REPZ | PREFIX_REPNZ | PREFIX_DATA))) {
if (!(s->flags & HF_OSFXSR_MASK)) {
goto illegal;
}
}
break;
case 12:
/* Must have a VSIB byte and no address prefix. */
assert(s->has_modrm);
if ((s->modrm & 7) != 4 || s->aflag == MO_16) {
goto illegal;
}
/* Check no overlap between registers. */
if (!decode->op[0].has_ea &&
(decode->op[0].n == decode->mem.index || decode->op[0].n == decode->op[1].n)) {
goto illegal;
}
assert(!decode->op[1].has_ea);
if (decode->op[1].n == decode->mem.index) {
goto illegal;
}
if (!decode->op[2].has_ea &&
(decode->op[2].n == decode->mem.index || decode->op[2].n == decode->op[1].n)) {
goto illegal;
}
/* fall through */
case 6:
case 11:
if (!(s->prefix & PREFIX_VEX)) {
goto illegal;
}
if (!(s->flags & HF_AVX_EN_MASK)) {
goto illegal;
}
break;
case 8:
/* Non-VEX case handled in decode_0F77. */
assert(s->prefix & PREFIX_VEX);
if (!(s->flags & HF_AVX_EN_MASK)) {
goto illegal;
}
break;
case 13:
if (!(s->prefix & PREFIX_VEX)) {
goto illegal;
}
if (s->vex_l) {
goto illegal;
}
/* All integer instructions use VEX.vvvv, so exit. */
return true;
}
if (s->vex_v != 0 &&
e->op0 != X86_TYPE_H && e->op0 != X86_TYPE_B &&
e->op1 != X86_TYPE_H && e->op1 != X86_TYPE_B &&
e->op2 != X86_TYPE_H && e->op2 != X86_TYPE_B) {
goto illegal;
}
if (s->flags & HF_TS_MASK) {
goto nm_exception;
}
if (s->flags & HF_EM_MASK) {
goto illegal;
}
return true;
nm_exception:
gen_NM_exception(s);
return false;
illegal:
gen_illegal_opcode(s);
return false;
}
static void decode_temp_free(X86DecodedOp *op)
{
if (op->v_ptr) {
tcg_temp_free_ptr(op->v_ptr);
}
}
static void decode_temps_free(X86DecodedInsn *decode)
{
decode_temp_free(&decode->op[0]);
decode_temp_free(&decode->op[1]);
decode_temp_free(&decode->op[2]);
}
/*
* Convert one instruction. s->base.is_jmp is set if the translation must
* be stopped.
*/
static void disas_insn_new(DisasContext *s, CPUState *cpu, int b)
{
CPUX86State *env = cpu->env_ptr;
bool first = true;
X86DecodedInsn decode;
X86DecodeFunc decode_func = decode_root;
s->has_modrm = false;
next_byte:
if (first) {
first = false;
} else {
b = x86_ldub_code(env, s);
}
/* Collect prefixes. */
switch (b) {
case 0xf3:
s->prefix |= PREFIX_REPZ;
s->prefix &= ~PREFIX_REPNZ;
goto next_byte;
case 0xf2:
s->prefix |= PREFIX_REPNZ;
s->prefix &= ~PREFIX_REPZ;
goto next_byte;
case 0xf0:
s->prefix |= PREFIX_LOCK;
goto next_byte;
case 0x2e:
s->override = R_CS;
goto next_byte;
case 0x36:
s->override = R_SS;
goto next_byte;
case 0x3e:
s->override = R_DS;
goto next_byte;
case 0x26:
s->override = R_ES;
goto next_byte;
case 0x64:
s->override = R_FS;
goto next_byte;
case 0x65:
s->override = R_GS;
goto next_byte;
case 0x66:
s->prefix |= PREFIX_DATA;
goto next_byte;
case 0x67:
s->prefix |= PREFIX_ADR;
goto next_byte;
#ifdef TARGET_X86_64
case 0x40 ... 0x4f:
if (CODE64(s)) {
/* REX prefix */
s->prefix |= PREFIX_REX;
s->vex_w = (b >> 3) & 1;
s->rex_r = (b & 0x4) << 1;
s->rex_x = (b & 0x2) << 2;
s->rex_b = (b & 0x1) << 3;
goto next_byte;
}
break;
#endif
case 0xc5: /* 2-byte VEX */
case 0xc4: /* 3-byte VEX */
/*
* VEX prefixes cannot be used except in 32-bit mode.
* Otherwise the instruction is LES or LDS.
*/
if (CODE32(s) && !VM86(s)) {
static const int pp_prefix[4] = {
0, PREFIX_DATA, PREFIX_REPZ, PREFIX_REPNZ
};
int vex3, vex2 = x86_ldub_code(env, s);
if (!CODE64(s) && (vex2 & 0xc0) != 0xc0) {
/*
* 4.1.4.6: In 32-bit mode, bits [7:6] must be 11b,
* otherwise the instruction is LES or LDS.
*/
s->pc--; /* rewind the advance_pc() x86_ldub_code() did */
break;
}
/* 4.1.1-4.1.3: No preceding lock, 66, f2, f3, or rex prefixes. */
if (s->prefix & (PREFIX_REPZ | PREFIX_REPNZ
| PREFIX_LOCK | PREFIX_DATA | PREFIX_REX)) {
goto illegal_op;
}
#ifdef TARGET_X86_64
s->rex_r = (~vex2 >> 4) & 8;
#endif
if (b == 0xc5) {
/* 2-byte VEX prefix: RVVVVlpp, implied 0f leading opcode byte */
vex3 = vex2;
decode_func = decode_0F;
} else {
/* 3-byte VEX prefix: RXBmmmmm wVVVVlpp */
vex3 = x86_ldub_code(env, s);
#ifdef TARGET_X86_64
s->rex_x = (~vex2 >> 3) & 8;
s->rex_b = (~vex2 >> 2) & 8;
#endif
s->vex_w = (vex3 >> 7) & 1;
switch (vex2 & 0x1f) {
case 0x01: /* Implied 0f leading opcode bytes. */
decode_func = decode_0F;
break;
case 0x02: /* Implied 0f 38 leading opcode bytes. */
decode_func = decode_0F38;
break;
case 0x03: /* Implied 0f 3a leading opcode bytes. */
decode_func = decode_0F3A;
break;
default: /* Reserved for future use. */
goto unknown_op;
}
}
s->vex_v = (~vex3 >> 3) & 0xf;
s->vex_l = (vex3 >> 2) & 1;
s->prefix |= pp_prefix[vex3 & 3] | PREFIX_VEX;
}
break;
default:
if (b >= 0x100) {
b -= 0x100;
decode_func = do_decode_0F;
}
break;
}
/* Post-process prefixes. */
if (CODE64(s)) {
/*
* In 64-bit mode, the default data size is 32-bit. Select 64-bit
* data with rex_w, and 16-bit data with 0x66; rex_w takes precedence
* over 0x66 if both are present.
*/
s->dflag = (REX_W(s) ? MO_64 : s->prefix & PREFIX_DATA ? MO_16 : MO_32);
/* In 64-bit mode, 0x67 selects 32-bit addressing. */
s->aflag = (s->prefix & PREFIX_ADR ? MO_32 : MO_64);
} else {
/* In 16/32-bit mode, 0x66 selects the opposite data size. */
if (CODE32(s) ^ ((s->prefix & PREFIX_DATA) != 0)) {
s->dflag = MO_32;
} else {
s->dflag = MO_16;
}
/* In 16/32-bit mode, 0x67 selects the opposite addressing. */
if (CODE32(s) ^ ((s->prefix & PREFIX_ADR) != 0)) {
s->aflag = MO_32;
} else {
s->aflag = MO_16;
}
}
memset(&decode, 0, sizeof(decode));
decode.b = b;
if (!decode_insn(s, env, decode_func, &decode)) {
goto illegal_op;
}
if (!decode.e.gen) {
goto unknown_op;
}
if (!has_cpuid_feature(s, decode.e.cpuid)) {
goto illegal_op;
}
switch (decode.e.special) {
case X86_SPECIAL_None:
break;
case X86_SPECIAL_Locked:
if (decode.op[0].has_ea) {
s->prefix |= PREFIX_LOCK;
}
break;
case X86_SPECIAL_ProtMode:
if (!PE(s) || VM86(s)) {
goto illegal_op;
}
break;
case X86_SPECIAL_i64:
if (CODE64(s)) {
goto illegal_op;
}
break;
case X86_SPECIAL_o64:
if (!CODE64(s)) {
goto illegal_op;
}
break;
case X86_SPECIAL_ZExtOp0:
assert(decode.op[0].unit == X86_OP_INT);
if (!decode.op[0].has_ea) {
decode.op[0].ot = MO_32;
}
break;
case X86_SPECIAL_ZExtOp2:
assert(decode.op[2].unit == X86_OP_INT);
if (!decode.op[2].has_ea) {
decode.op[2].ot = MO_32;
}
break;
case X86_SPECIAL_AVXExtMov:
if (!decode.op[2].has_ea) {
decode.op[2].ot = s->vex_l ? MO_256 : MO_128;
} else if (s->vex_l) {
decode.op[2].ot++;
}
break;
case X86_SPECIAL_MMX:
if (!(s->prefix & (PREFIX_REPZ | PREFIX_REPNZ | PREFIX_DATA))) {
gen_helper_enter_mmx(cpu_env);
}
break;
}
if (!validate_vex(s, &decode)) {
return;
}
if (decode.op[0].has_ea || decode.op[1].has_ea || decode.op[2].has_ea) {
gen_load_ea(s, &decode.mem, decode.e.vex_class == 12);
}
if (s->prefix & PREFIX_LOCK) {
if (decode.op[0].unit != X86_OP_INT || !decode.op[0].has_ea) {
goto illegal_op;
}
gen_load(s, &decode, 2, s->T1);
decode.e.gen(s, env, &decode);
} else {
if (decode.op[0].unit == X86_OP_MMX) {
compute_mmx_offset(&decode.op[0]);
} else if (decode.op[0].unit == X86_OP_SSE) {
compute_xmm_offset(&decode.op[0]);
}
gen_load(s, &decode, 1, s->T0);
gen_load(s, &decode, 2, s->T1);
decode.e.gen(s, env, &decode);
gen_writeback(s, &decode, 0, s->T0);
}
decode_temps_free(&decode);
return;
illegal_op:
gen_illegal_opcode(s);
return;
unknown_op:
gen_unknown_opcode(env, s);
}
