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PPU LLVM: New analyser (#1858)

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Minor fixes
VEX prefix support
This commit is contained in:
Ivan 2016-07-07 21:42:39 +03:00 • committed by GitHub
parent 0dc00b8104
commit 77594dc66c
13 changed files with 798 additions and 493 deletions
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51
Utilities/Thread.cpp
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@ -590,6 +590,57 @@ void decode_x64_reg_op(const u8* code, x64_op_t& out_op, x64_reg_t& out_reg, siz
}
break;
}
case 0xc4: // 3-byte VEX prefix
case 0xc5: // 2-byte VEX prefix
{
// Last prefix byte: op2 or op3
const u8 opx = op1 == 0xc5 ? op2 : op3;
// Implied prefixes
rex |= op2 & 0x80 ? 0 : 0x4; // REX.R
rex |= op1 == 0xc4 && op3 & 0x80 ? 0x8 : 0; // REX.W ???
oso = (opx & 0x3) == 0x1;
repe = (opx & 0x3) == 0x2;
repne = (opx & 0x3) == 0x3;
const u8 vopm = op1 == 0xc5 ? 1 : op2 & 0x1f;
const u8 vop1 = op1 == 0xc5 ? op3 : code[2];
const u8 vlen = (opx & 0x4) ? 32 : 16;
const u8 vreg = (~opx >> 3) & 0xf;
out_length += op1 == 0xc5 ? 2 : 3;
code += op1 == 0xc5 ? 2 : 3;
if (vopm == 0x1) switch (vop1) // Implied leading byte 0x0F
{
case 0x11:
case 0x29:
{
if (!repe && !repne) // VMOVAPS/VMOVAPD/VMOVUPS/VMOVUPD mem,reg
{
out_op = X64OP_STORE;
out_reg = get_modRM_reg_xmm(code, rex);
out_size = vlen;
out_length += get_modRM_size(code);
return;
}
break;
}
case 0x7f:
{
if (repe || oso) // VMOVDQU/VMOVDQA mem,reg
{
out_op = X64OP_STORE;
out_reg = get_modRM_reg_xmm(code, rex);
out_size = vlen;
out_length += get_modRM_size(code);
return;
}
break;
}
}
break;
}
case 0xc6:
{
if (!lock && !oso && get_modRM_reg(code, 0) == 0) // MOV r8/m8, imm8