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target/i386: introduce x86_ld*_code

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These take care of advancing s->pc, and will provide a unified point
where to check for the 15-byte instruction length limit.

Backports commit e3af7c788b73a6495eb9d94992ef11f6ad6f3c56 from qemu
This commit is contained in:
Paolo Bonzini 2018-03-05 04:08:56 -05:00 committed by Lioncash
parent c897ba3e2c
commit 44f87a8fbf
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GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 126 additions and 104 deletions
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230
qemu/target/i386/translate.c
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@ -2117,6 +2117,41 @@ static void gen_shifti(DisasContext *s, int op, TCGMemOp ot, int d, int c)
}
}
static uint64_t advance_pc(CPUX86State *env, DisasContext *s, int num_bytes)
{
uint64_t pc = s->pc;
s->pc += num_bytes;
return pc;
}
static inline uint8_t x86_ldub_code(CPUX86State *env, DisasContext *s)
{
return cpu_ldub_code(env, advance_pc(env, s, 1));
}
static inline int16_t x86_ldsw_code(CPUX86State *env, DisasContext *s)
{
return cpu_ldsw_code(env, advance_pc(env, s, 2));
}
static inline uint16_t x86_lduw_code(CPUX86State *env, DisasContext *s)
{
return cpu_lduw_code(env, advance_pc(env, s, 2));
}
static inline uint32_t x86_ldl_code(CPUX86State *env, DisasContext *s)
{
return cpu_ldl_code(env, advance_pc(env, s, 4));
}
#ifdef TARGET_X86_64
static inline uint64_t x86_ldq_code(CPUX86State *env, DisasContext *s)
{
return cpu_ldq_code(env, advance_pc(env, s, 8));
}
#endif
/* Decompose an address. */
typedef struct AddressParts {
@ -2156,7 +2191,7 @@ static AddressParts gen_lea_modrm_0(CPUX86State *env, DisasContext *s,
case MO_32:
havesib = 0;
if (rm == 4) {
int code = cpu_ldub_code(env, s->pc++);
int code = x86_ldub_code(env, s);
scale = (code >> 6) & 3;
index = ((code >> 3) & 7) | REX_X(s);
if (index == 4) {
@ -2170,8 +2205,7 @@ static AddressParts gen_lea_modrm_0(CPUX86State *env, DisasContext *s,
case 0:
if ((base & 7) == 5) {
base = -1;
disp = (int32_t)cpu_ldl_code(env, s->pc);
s->pc += 4;
disp = (int32_t)x86_ldl_code(env, s);
if (CODE64(s) && !havesib) {
base = -2;
disp += s->pc + s->rip_offset;
@ -2179,12 +2213,11 @@ static AddressParts gen_lea_modrm_0(CPUX86State *env, DisasContext *s,
}
break;
case 1:
disp = (int8_t)cpu_ldub_code(env, s->pc++);
disp = (int8_t)x86_ldub_code(env, s);
break;
default:
case 2:
disp = (int32_t)cpu_ldl_code(env, s->pc);
s->pc += 4;
disp = (int32_t)x86_ldl_code(env, s);
break;
}
@ -2202,15 +2235,13 @@ static AddressParts gen_lea_modrm_0(CPUX86State *env, DisasContext *s,
if (mod == 0) {
if (rm == 6) {
base = -1;
disp = cpu_lduw_code(env, s->pc);
s->pc += 2;
disp = x86_lduw_code(env, s);
break;
}
} else if (mod == 1) {
disp = (int8_t)cpu_ldub_code(env, s->pc++);
disp = (int8_t)x86_ldub_code(env, s);
} else {
disp = (int16_t)cpu_lduw_code(env, s->pc);
s->pc += 2;
disp = (int16_t)x86_lduw_code(env, s);
}
switch (rm) {
@ -2379,19 +2410,16 @@ static inline uint32_t insn_get(CPUX86State *env, DisasContext *s, TCGMemOp ot)
switch (ot) {
case MO_8:
ret = cpu_ldub_code(env, s->pc);
s->pc++;
ret = x86_ldub_code(env, s);
break;
case MO_16:
ret = cpu_lduw_code(env, s->pc);
s->pc += 2;
ret = x86_lduw_code(env, s);
break;
case MO_32:
#ifdef TARGET_X86_64
case MO_64:
#endif
ret = cpu_ldl_code(env, s->pc);
s->pc += 4;
ret = x86_ldl_code(env, s);
break;
default:
tcg_abort();
@ -3609,7 +3637,7 @@ static void gen_sse(CPUX86State *env, DisasContext *s, int b,
gen_helper_enter_mmx(tcg_ctx, cpu_env);
}
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
reg = ((modrm >> 3) & 7);
if (is_xmm)
reg |= rex_r;
@ -3818,8 +3846,8 @@ static void gen_sse(CPUX86State *env, DisasContext *s, int b,
if (b1 == 1 && reg != 0)
goto illegal_op;
field_length = cpu_ldub_code(env, s->pc++) & 0x3F;
bit_index = cpu_ldub_code(env, s->pc++) & 0x3F;
field_length = x86_ldub_code(env, s) & 0x3F;
bit_index = x86_ldub_code(env, s) & 0x3F;
tcg_gen_addi_ptr(tcg_ctx, cpu_ptr0, cpu_env,
offsetof(CPUX86State,xmm_regs[reg]));
if (b1 == 1)
@ -3948,7 +3976,7 @@ static void gen_sse(CPUX86State *env, DisasContext *s, int b,
if (b1 >= 2) {
goto unknown_op;
}
val = cpu_ldub_code(env, s->pc++);
val = x86_ldub_code(env, s);
if (is_xmm) {
tcg_gen_movi_tl(tcg_ctx, cpu_T0, val);
tcg_gen_st32_tl(tcg_ctx, cpu_T0, cpu_env, offsetof(CPUX86State,xmm_t0.ZMM_L(0)));
@ -4105,7 +4133,7 @@ static void gen_sse(CPUX86State *env, DisasContext *s, int b,
case 0x1c4:
s->rip_offset = 1;
gen_ldst_modrm(env, s, modrm, MO_16, OR_TMP0, 0);
val = cpu_ldub_code(env, s->pc++);
val = x86_ldub_code(env, s);
if (b1) {
val &= 7;
tcg_gen_st16_tl(tcg_ctx, cpu_T0, cpu_env,
@ -4121,7 +4149,7 @@ static void gen_sse(CPUX86State *env, DisasContext *s, int b,
if (mod != 3)
goto illegal_op;
ot = mo_64_32(s->dflag);
val = cpu_ldub_code(env, s->pc++);
val = x86_ldub_code(env, s);
if (b1) {
val &= 7;
rm = (modrm & 7) | REX_B(s);
@ -4184,7 +4212,7 @@ static void gen_sse(CPUX86State *env, DisasContext *s, int b,
if ((b & 0xf0) == 0xf0) {
goto do_0f_38_fx;
}
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
rm = modrm & 7;
reg = ((modrm >> 3) & 7) | rex_r;
mod = (modrm >> 6) & 3;
@ -4261,7 +4289,7 @@ static void gen_sse(CPUX86State *env, DisasContext *s, int b,
do_0f_38_fx:
/* Various integer extensions at 0f 38 f[0-f]. */
b = modrm | (b1 << 8);
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
reg = ((modrm >> 3) & 7) | rex_r;
switch (b) {
@ -4622,7 +4650,7 @@ static void gen_sse(CPUX86State *env, DisasContext *s, int b,
case 0x03a:
case 0x13a:
b = modrm;
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
rm = modrm & 7;
reg = ((modrm >> 3) & 7) | rex_r;
mod = (modrm >> 6) & 3;
@ -4645,7 +4673,7 @@ static void gen_sse(CPUX86State *env, DisasContext *s, int b,
if (mod != 3)
gen_lea_modrm(env, s, modrm);
reg = ((modrm >> 3) & 7) | rex_r;
val = cpu_ldub_code(env, s->pc++);
val = x86_ldub_code(env, s);
switch (b) {
case 0x14: /* pextrb */
tcg_gen_ld8u_tl(tcg_ctx, cpu_T0, cpu_env, offsetof(CPUX86State,
@ -4793,7 +4821,7 @@ static void gen_sse(CPUX86State *env, DisasContext *s, int b,
gen_ldq_env_A0(s, op2_offset);
}
}
val = cpu_ldub_code(env, s->pc++);
val = x86_ldub_code(env, s);
if ((b & 0xfc) == 0x60) { /* pcmpXstrX */
set_cc_op(s, CC_OP_EFLAGS);
@ -4812,7 +4840,7 @@ static void gen_sse(CPUX86State *env, DisasContext *s, int b,
case 0x33a:
/* Various integer extensions at 0f 3a f[0-f]. */
b = modrm | (b1 << 8);
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
reg = ((modrm >> 3) & 7) | rex_r;
switch (b) {
@ -4824,7 +4852,7 @@ static void gen_sse(CPUX86State *env, DisasContext *s, int b,
}
ot = mo_64_32(s->dflag);
gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
b = cpu_ldub_code(env, s->pc++);
b = x86_ldub_code(env, s);
if (ot == MO_64) {
tcg_gen_rotri_tl(tcg_ctx, cpu_T0, cpu_T0, b & 63);
} else {
@ -4916,7 +4944,7 @@ static void gen_sse(CPUX86State *env, DisasContext *s, int b,
}
switch(b) {
case 0x0f: /* 3DNow! data insns */
val = cpu_ldub_code(env, s->pc++);
val = x86_ldub_code(env, s);
sse_fn_epp = sse_op_table5[val];
if (!sse_fn_epp) {
goto unknown_op;
@ -4930,7 +4958,7 @@ static void gen_sse(CPUX86State *env, DisasContext *s, int b,
break;
case 0x70: /* pshufx insn */
case 0xc6: /* pshufx insn */
val = cpu_ldub_code(env, s->pc++);
val = x86_ldub_code(env, s);
tcg_gen_addi_ptr(tcg_ctx, cpu_ptr0, cpu_env, op1_offset);
tcg_gen_addi_ptr(tcg_ctx, cpu_ptr1, cpu_env, op2_offset);
/* XXX: introduce a new table? */
@ -4939,7 +4967,7 @@ static void gen_sse(CPUX86State *env, DisasContext *s, int b,
break;
case 0xc2:
/* compare insns */
val = cpu_ldub_code(env, s->pc++);
val = x86_ldub_code(env, s);
if (val >= 8)
goto unknown_op;
sse_fn_epp = sse_op_table4[val][b1];
@ -5074,8 +5102,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
if (s->pc - pc_start > 14) {
goto illegal_op;
}
b = cpu_ldub_code(env, s->pc);
s->pc++;
b = x86_ldub_code(env, s);
/* Collect prefixes. */
switch (b) {
case 0xf3:
@ -5147,7 +5174,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
static const int pp_prefix[4] = {
0, PREFIX_DATA, PREFIX_REPZ, PREFIX_REPNZ
};
int vex3, vex2 = cpu_ldub_code(env, s->pc);
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,
@ -5169,17 +5196,17 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
rex_r = (~vex2 >> 4) & 8;
if (b == 0xc5) {
vex3 = vex2;
b = cpu_ldub_code(env, s->pc++);
b = x86_ldub_code(env, s);
} else {
#ifdef TARGET_X86_64
s->rex_x = (~vex2 >> 3) & 8;
s->rex_b = (~vex2 >> 2) & 8;
#endif
vex3 = cpu_ldub_code(env, s->pc++);
vex3 = x86_ldub_code(env, s);
rex_w = (vex3 >> 7) & 1;
switch (vex2 & 0x1f) {
case 0x01: /* Implied 0f leading opcode bytes. */
b = cpu_ldub_code(env, s->pc++) | 0x100;
b = x86_ldub_code(env, s) | 0x100;
break;
case 0x02: /* Implied 0f 38 leading opcode bytes. */
b = 0x138;
@ -5231,7 +5258,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
case 0x0f:
/**************************/
/* extended op code */
b = cpu_ldub_code(env, s->pc++) | 0x100;
b = x86_ldub_code(env, s) | 0x100;
goto reswitch;
/**************************/
@ -5253,7 +5280,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
switch(f) {
case 0: /* OP Ev, Gv */
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
reg = ((modrm >> 3) & 7) | rex_r;
mod = (modrm >> 6) & 3;
rm = (modrm & 7) | REX_B(s);
@ -5274,7 +5301,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
gen_op(s, op, ot, opreg);
break;
case 1: /* OP Gv, Ev */
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
mod = (modrm >> 6) & 3;
reg = ((modrm >> 3) & 7) | rex_r;
rm = (modrm & 7) | REX_B(s);
@ -5308,7 +5335,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
ot = mo_b_d(b, dflag);
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
mod = (modrm >> 6) & 3;
rm = (modrm & 7) | REX_B(s);
op = (modrm >> 3) & 7;
@ -5356,7 +5383,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
case 0xf7:
ot = mo_b_d(b, dflag);
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
mod = (modrm >> 6) & 3;
rm = (modrm & 7) | REX_B(s);
op = (modrm >> 3) & 7;
@ -5588,7 +5615,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
case 0xff: /* GRP5 */
ot = mo_b_d(b, dflag);
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
mod = (modrm >> 6) & 3;
rm = (modrm & 7) | REX_B(s);
op = (modrm >> 3) & 7;
@ -5696,7 +5723,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
case 0x85:
ot = mo_b_d(b, dflag);
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
reg = ((modrm >> 3) & 7) | rex_r;
gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
@ -5768,7 +5795,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
case 0x69: /* imul Gv, Ev, I */
case 0x6b:
ot = dflag;
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
reg = ((modrm >> 3) & 7) | rex_r;
if (b == 0x69)
s->rip_offset = insn_const_size(ot);
@ -5820,7 +5847,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
case 0x1c0:
case 0x1c1: /* xadd Ev, Gv */
ot = mo_b_d(b, dflag);
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
reg = ((modrm >> 3) & 7) | rex_r;
mod = (modrm >> 6) & 3;
gen_op_mov_v_reg(tcg_ctx, ot, cpu_T0, reg);
@ -5852,7 +5879,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
TCGv oldv, newv, cmpv;
ot = mo_b_d(b, dflag);
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
reg = ((modrm >> 3) & 7) | rex_r;
mod = (modrm >> 6) & 3;
oldv = tcg_temp_new(tcg_ctx);
@ -5903,7 +5930,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
}
break;
case 0x1c7: /* cmpxchg8b */
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
mod = (modrm >> 6) & 3;
if ((mod == 3) || ((modrm & 0x38) != 0x8))
goto illegal_op;
@ -5967,7 +5994,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
gen_push_v(s, cpu_T0);
break;
case 0x8f: /* pop Ev */
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
mod = (modrm >> 6) & 3;
ot = gen_pop_T0(s);
if (mod == 3) {
@ -5986,9 +6013,8 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
case 0xc8: /* enter */
{
int level;
val = cpu_lduw_code(env, s->pc);
s->pc += 2;
level = cpu_ldub_code(env, s->pc++);
val = x86_lduw_code(env, s);
level = x86_ldub_code(env, s);
gen_enter(s, val, level);
}
break;
@ -6045,7 +6071,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
case 0x88:
case 0x89: /* mov Gv, Ev */
ot = mo_b_d(b, dflag);
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
reg = ((modrm >> 3) & 7) | rex_r;
/* generate a generic store */
@ -6054,7 +6080,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
case 0xc6:
case 0xc7: /* mov Ev, Iv */
ot = mo_b_d(b, dflag);
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
mod = (modrm >> 6) & 3;
reg = ((modrm >> 3) & 7) | rex_r;
if (mod != 3) {
@ -6077,14 +6103,14 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
case 0x8a:
case 0x8b: /* mov Ev, Gv */
ot = mo_b_d(b, dflag);
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
reg = ((modrm >> 3) & 7) | rex_r;
gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
gen_op_mov_reg_v(tcg_ctx, ot, reg, cpu_T0);
break;
case 0x8e: /* mov seg, Gv */
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
reg = (modrm >> 3) & 7;
if (reg >= 6 || reg == R_CS)
goto illegal_op;
@ -6102,7 +6128,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
}
break;
case 0x8c: /* mov Gv, seg */
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
reg = (modrm >> 3) & 7;
mod = (modrm >> 6) & 3;
if (reg >= 6)
@ -6127,7 +6153,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
/* s_ot is the sign+size of source */
s_ot = b & 8 ? MO_SIGN | ot : ot;
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
reg = ((modrm >> 3) & 7) | rex_r;
mod = (modrm >> 6) & 3;
rm = (modrm & 7) | REX_B(s);
@ -6163,7 +6189,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
break;
case 0x8d: /* lea */
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
mod = (modrm >> 6) & 3;
if (mod == 3)
goto illegal_op;
@ -6187,8 +6213,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
switch (s->aflag) {
#ifdef TARGET_X86_64
case MO_64:
offset_addr = cpu_ldq_code(env, s->pc);
s->pc += 8;
offset_addr = x86_ldq_code(env, s);
break;
#endif
default:
@ -6227,8 +6252,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
if (dflag == MO_64) {
uint64_t tmp;
/* 64 bit case */
tmp = cpu_ldq_code(env, s->pc);
s->pc += 8;
tmp = x86_ldq_code(env, s);
reg = (b & 7) | REX_B(s);
tcg_gen_movi_tl(tcg_ctx, cpu_T0, tmp);
gen_op_mov_reg_v(tcg_ctx, MO_64, reg, cpu_T0);
@ -6253,7 +6277,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
case 0x86:
case 0x87: /* xchg Ev, Gv */
ot = mo_b_d(b, dflag);
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
reg = ((modrm >> 3) & 7) | rex_r;
mod = (modrm >> 6) & 3;
if (mod == 3) {
@ -6290,7 +6314,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
op = R_GS;
do_lxx:
ot = dflag != MO_16 ? MO_32 : MO_16;
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
reg = ((modrm >> 3) & 7) | rex_r;
mod = (modrm >> 6) & 3;
if (mod == 3)
@ -6318,7 +6342,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
grp2_label:
{
ot = mo_b_d(b, dflag);
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
mod = (modrm >> 6) & 3;
op = (modrm >> 3) & 7;
@ -6337,7 +6361,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
gen_shift(s, op, ot, opreg, OR_ECX);
} else {
if (shift == 2) {
shift = cpu_ldub_code(env, s->pc++);
shift = x86_ldub_code(env, s);
}
gen_shifti(s, op, ot, opreg, shift);
}
@ -6371,7 +6395,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
shift = 0;
do_shiftd:
ot = dflag;
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
mod = (modrm >> 6) & 3;
rm = (modrm & 7) | REX_B(s);
reg = ((modrm >> 3) & 7) | rex_r;
@ -6384,7 +6408,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
gen_op_mov_v_reg(tcg_ctx, ot, cpu_T1, reg);
if (shift) {
TCGv imm = tcg_const_tl(tcg_ctx, cpu_ldub_code(env, s->pc++));
TCGv imm = tcg_const_tl(tcg_ctx, x86_ldub_code(env, s));
gen_shiftd_rm_T1(s, ot, opreg, op, imm);
tcg_temp_free(tcg_ctx, imm);
} else {
@ -6402,14 +6426,14 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
gen_exception(s, EXCP07_PREX, pc_start - s->cs_base);
break;
}
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
mod = (modrm >> 6) & 3;
rm = modrm & 7;
op = ((b & 7) << 3) | ((modrm >> 3) & 7);
if (mod != 3) {
/* memory op */
gen_lea_modrm(env, s, modrm);
if( (op >= 0x00 && op <= 0x07) || /* fxxxs */
(op >= 0x10 && op <= 0x17) || /* fixxxl */
(op >= 0x20 && op <= 0x27) || /* fxxxl */
@ -7022,7 +7046,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
case 0xe4: // in
case 0xe5: // out
ot = mo_b_d32(b, dflag);
val = cpu_ldub_code(env, s->pc++);
val = x86_ldub_code(env, s);
tcg_gen_movi_tl(tcg_ctx, cpu_T0, val);
gen_check_io(s, ot, pc_start - s->cs_base,
SVM_IOIO_TYPE_MASK | svm_is_rep(prefixes));
@ -7034,7 +7058,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
case 0xe6:
case 0xe7:
ot = mo_b_d32(b, dflag);
val = cpu_ldub_code(env, s->pc++);
val = x86_ldub_code(env, s);
tcg_gen_movi_tl(tcg_ctx, cpu_T0, val);
gen_check_io(s, ot, pc_start - s->cs_base,
svm_is_rep(prefixes));
@ -7073,8 +7097,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
/************************/
/* control */
case 0xc2: /* ret im */
val = cpu_ldsw_code(env, s->pc);
s->pc += 2;
val = x86_ldsw_code(env, s);
ot = gen_pop_T0(s);
gen_stack_update(s, val + (1 << ot));
/* Note that gen_pop_T0 uses a zero-extending load. */
@ -7091,8 +7114,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
gen_jr(s, cpu_T0);
break;
case 0xca: /* lret im */
val = cpu_ldsw_code(env, s->pc);
s->pc += 2;
val = x86_ldsw_code(env, s);
do_lret:
if (s->pe && !s->vm86) {
gen_update_cc_op(s);
@ -7235,7 +7257,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
//case 0x190 ... 0x19f: /* setcc Gv */
case 0x190: case 0x191: case 0x192: case 0x193: case 0x194: case 0x195: case 0x196: case 0x197:
case 0x198: case 0x199: case 0x19a: case 0x19b: case 0x19c: case 0x19d: case 0x19e: case 0x19f:
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
gen_setcc1(s, b, cpu_T0);
gen_ldst_modrm(env, s, modrm, MO_8, OR_TMP0, 1);
break;
@ -7246,7 +7268,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
goto illegal_op;
}
ot = dflag;
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
reg = ((modrm >> 3) & 7) | rex_r;
gen_cmovcc1(env, s, ot, b, modrm, reg);
break;
@ -7363,7 +7385,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
/* bit operations */
case 0x1ba: /* bt/bts/btr/btc Gv, im */
ot = dflag;
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
op = (modrm >> 3) & 7;
mod = (modrm >> 6) & 3;
rm = (modrm & 7) | REX_B(s);
@ -7377,7 +7399,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
gen_op_mov_v_reg(tcg_ctx, ot, cpu_T0, rm);
}
/* load shift */
val = cpu_ldub_code(env, s->pc++);
val = x86_ldub_code(env, s);
tcg_gen_movi_tl(tcg_ctx, cpu_T1, val);
if (op < 4)
goto unknown_op;
@ -7396,7 +7418,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
op = 3;
do_btx:
ot = dflag;
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
reg = ((modrm >> 3) & 7) | rex_r;
mod = (modrm >> 6) & 3;
rm = (modrm & 7) | REX_B(s);
@ -7501,7 +7523,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
case 0x1bc: /* bsf / tzcnt */
case 0x1bd: /* bsr / lzcnt */
ot = dflag;
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
reg = ((modrm >> 3) & 7) | rex_r;
gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
gen_extu(tcg_ctx, ot, cpu_T0);
@ -7581,7 +7603,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
case 0xd4: /* aam */
if (CODE64(s))
goto illegal_op;
val = cpu_ldub_code(env, s->pc++);
val = x86_ldub_code(env, s);
if (val == 0) {
gen_exception(s, EXCP00_DIVZ, pc_start - s->cs_base);
} else {
@ -7592,7 +7614,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
case 0xd5: /* aad */
if (CODE64(s))
goto illegal_op;
val = cpu_ldub_code(env, s->pc++);
val = x86_ldub_code(env, s);
gen_helper_aad(tcg_ctx, cpu_env, tcg_const_i32(tcg_ctx, val));
set_cc_op(s, CC_OP_LOGICB);
break;
@ -7628,7 +7650,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
gen_interrupt(s, EXCP03_INT3, pc_start - s->cs_base, s->pc - s->cs_base);
break;
case 0xcd: /* int N */
val = cpu_ldub_code(env, s->pc++);
val = x86_ldub_code(env, s);
if (s->vm86 && s->iopl != 3) {
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
} else {
@ -7696,7 +7718,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
if (CODE64(s))
goto illegal_op;
ot = dflag;
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
reg = (modrm >> 3) & 7;
mod = (modrm >> 6) & 3;
if (mod == 3)
@ -7868,7 +7890,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
}
break;
case 0x100:
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
mod = (modrm >> 6) & 3;
op = (modrm >> 3) & 7;
switch(op) {
@ -7931,7 +7953,7 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
break;
case 0x101:
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
switch (modrm) {
CASE_MODRM_MEM_OP(0): /* sgdt */
gen_svm_check_intercept(s, pc_start, SVM_EXIT_GDTR_READ);
@ -8283,7 +8305,7 @@ case 0x101:
/* d_ot is the size of destination */
d_ot = dflag;
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
reg = ((modrm >> 3) & 7) | rex_r;
mod = (modrm >> 6) & 3;
rm = (modrm & 7) | REX_B(s);
@ -8312,7 +8334,7 @@ case 0x101:
t1 = tcg_temp_local_new(tcg_ctx);
t2 = tcg_temp_local_new(tcg_ctx);
ot = MO_16;
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
reg = (modrm >> 3) & 7;
mod = (modrm >> 6) & 3;
rm = modrm & 7;
@ -8357,7 +8379,7 @@ case 0x101:
if (!s->pe || s->vm86)
goto illegal_op;
ot = dflag != MO_16 ? MO_32 : MO_16;
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
reg = ((modrm >> 3) & 7) | rex_r;
gen_ldst_modrm(env, s, modrm, MO_16, OR_TMP0, 0);
t0 = tcg_temp_local_new(tcg_ctx);
@ -8377,7 +8399,7 @@ case 0x101:
}
break;
case 0x118:
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
mod = (modrm >> 6) & 3;
op = (modrm >> 3) & 7;
switch(op) {
@ -8396,7 +8418,7 @@ case 0x101:
}
break;
case 0x11a:
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
if (s->flags & HF_MPX_EN_MASK) {
mod = (modrm >> 6) & 3;
reg = ((modrm >> 3) & 7) | rex_r;
@ -8486,7 +8508,7 @@ case 0x101:
gen_nop_modrm(env, s, modrm);
break;
case 0x11b:
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
if (s->flags & HF_MPX_EN_MASK) {
mod = (modrm >> 6) & 3;
reg = ((modrm >> 3) & 7) | rex_r;
@ -8588,7 +8610,7 @@ case 0x101:
gen_nop_modrm(env, s, modrm);
break;
case 0x119: case 0x11c: case 0x11d: case 0x11e: case 0x11f: /* nop (multi byte) */
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
gen_nop_modrm(env, s, modrm);
break;
case 0x120: /* mov reg, crN */
@ -8596,7 +8618,7 @@ case 0x101:
if (s->cpl != 0) {
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
} else {
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
/* Ignore the mod bits (assume (modrm&0xc0)==0xc0).
* AMD documentation (24594.pdf) and testing of
* intel 386 and 486 processors all show that the mod bits
@ -8665,7 +8687,7 @@ case 0x101:
if (s->cpl != 0) {
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
} else {
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
/* Ignore the mod bits (assume (modrm&0xc0)==0xc0).
* AMD documentation (24594.pdf) and testing of
* intel 386 and 486 processors all show that the mod bits
@ -8711,7 +8733,7 @@ case 0x101:
if (!(s->cpuid_features & CPUID_SSE2))
goto illegal_op;
ot = mo_64_32(dflag);
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
mod = (modrm >> 6) & 3;
if (mod == 3)
goto illegal_op;
@ -8720,7 +8742,7 @@ case 0x101:
gen_ldst_modrm(env, s, modrm, ot, reg, 1);
break;
case 0x1ae:
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
switch (modrm) {
CASE_MODRM_MEM_OP(0): /* fxsave */
if (!(s->cpuid_features & CPUID_FXSR)
@ -8966,7 +8988,7 @@ case 0x101:
break;
case 0x10d: /* 3DNow! prefetch(w) */
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
mod = (modrm >> 6) & 3;
if (mod == 3)
goto illegal_op;
@ -8988,7 +9010,7 @@ case 0x101:
if (!(s->cpuid_ext_features & CPUID_EXT_POPCNT))
goto illegal_op;
modrm = cpu_ldub_code(env, s->pc++);
modrm = x86_ldub_code(env, s);
reg = ((modrm >> 3) & 7) | rex_r;
if (s->prefix & PREFIX_DATA) {