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bugfix for decoder with EVEX enabled

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This commit is contained in:
Stanislav Shwartsman 2017-12-11 19:29:11 +00:00
parent e46f37b40e
commit a028ef7c9c
1 changed files with 13 additions and 3 deletions
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16
bochs/cpu/decoder/fetchdecode32.cc
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@ -1509,8 +1509,11 @@ unsigned evex_displ8_compression(const bxInstruction_c *i, unsigned ia_opcode, u
return 1;
}
if (ia_opcode == BX_IA_V512_VMOVDDUP_VpdWpd && i->getVL() == BX_VL128)
return 8;
// VMOVDDUP special case
if ((ia_opcode == BX_IA_V512_VMOVDDUP_VpdWpd ||
ia_opcode == BX_IA_V512_VMOVDDUP_VpdWpd_Kmask ||
ia_opcode == BX_IA_V256_VMOVDDUP_VpdWpd ||
ia_opcode == BX_IA_V128_VMOVDDUP_VpdWpd) && i->getVL() == BX_VL128) return 8;
unsigned len = i->getVL();
if (len == BX_NO_VL) len = BX_VL128;
@ -1584,7 +1587,6 @@ bx_bool assign_srcs(bxInstruction_c *i, unsigned ia_opcode, unsigned nnn, unsign
i->setSrcReg(n, nnn);
break;
case BX_SRC_RM:
case BX_SRC_VECTOR_RM:
if (i->modC0()) {
i->setSrcReg(n, rm);
}
@ -1596,6 +1598,14 @@ bx_bool assign_srcs(bxInstruction_c *i, unsigned ia_opcode, unsigned nnn, unsign
i->setSrcReg(n, tmpreg);
}
break;
case BX_SRC_VECTOR_RM:
if (i->modC0()) {
i->setSrcReg(n, rm);
}
else {
i->setSrcReg(n, BX_VECTOR_TMP_REGISTER);
}
break;
default:
BX_FATAL(("assign_srcs: unknown definition %d for src %d", src, n));
break;