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Fixed PANIC in CMPxx SSE instructions

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This commit is contained in:
Stanislav Shwartsman 2006-02-22 20:20:21 +00:00
parent 689d233c4f
commit 8ba6c1178a
1 changed files with 29 additions and 17 deletions
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46
bochs/cpu/sse_pfp.cc
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@ -1,5 +1,5 @@
/////////////////////////////////////////////////////////////////////////
// $Id: sse_pfp.cc,v 1.24 2006-02-20 19:28:57 sshwarts Exp $
// $Id: sse_pfp.cc,v 1.25 2006-02-22 20:20:21 sshwarts Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2003 Stanislav Shwartsman
@ -2666,6 +2666,12 @@ void BX_CPU_C::CMPPS_VpsWpsIb(bxInstruction_c *i)
mxcsr_to_softfloat_status_word(status, MXCSR);
int ib = i->Ib();
/* mask used bits, ignore reserved */
if (ib > 7) {
BX_ERROR(("CMPPS_VpsWpsIb: unrecognized predicate %u", i->Ib()));
}
ib &= 7;
if (MXCSR.get_DAZ()) {
op1.xmm32u(0) = handleDAZ(op1.xmm32u(0));
op1.xmm32u(1) = handleDAZ(op1.xmm32u(1));
@ -2689,7 +2695,7 @@ void BX_CPU_C::CMPPS_VpsWpsIb(bxInstruction_c *i)
result.xmm32u(3) =
compare32[ib](op1.xmm32u(3), op2.xmm32u(3), status) ? 0xFFFFFFFF : 0;
}
else if(ib < 8)
else
{
ib -= 4;
@ -2702,9 +2708,6 @@ void BX_CPU_C::CMPPS_VpsWpsIb(bxInstruction_c *i)
result.xmm32u(3) =
compare32[ib](op1.xmm32u(3), op2.xmm32u(3), status) ? 0 : 0xFFFFFFFF;
}
else {
BX_PANIC(("CMPPS_VpsWpsIb: unrecognized predicate %u", ib));
}
BX_CPU_THIS_PTR check_exceptionsSSE(status.float_exception_flags);
BX_WRITE_XMM_REG(i->nnn(), result);
@ -2740,6 +2743,12 @@ void BX_CPU_C::CMPPD_VpdWpdIb(bxInstruction_c *i)
mxcsr_to_softfloat_status_word(status, MXCSR);
int ib = i->Ib();
/* mask used bits, ignore reserved */
if (ib > 7) {
BX_ERROR(("CMPPD_VpdWpdIb: unrecognized predicate %u", i->Ib()));
}
ib &= 7;
if (MXCSR.get_DAZ())
{
op1.xmm64u(0) = handleDAZ(op1.xmm64u(0));
@ -2755,7 +2764,7 @@ void BX_CPU_C::CMPPD_VpdWpdIb(bxInstruction_c *i)
result.xmm64u(1) = compare64[ib](op1.xmm64u(1), op2.xmm64u(1), status) ?
BX_CONST64(0xFFFFFFFFFFFFFFFF) : 0;
}
else if(ib < 8)
else
{
ib -= 4;
@ -2764,9 +2773,6 @@ void BX_CPU_C::CMPPD_VpdWpdIb(bxInstruction_c *i)
result.xmm64u(1) = compare64[ib](op1.xmm64u(1), op2.xmm64u(1), status) ?
0 : BX_CONST64(0xFFFFFFFFFFFFFFFF);
}
else {
BX_PANIC(("CMPPS_VpdWpdIb: unrecognized predicate %u", ib));
}
BX_CPU_THIS_PTR check_exceptionsSSE(status.float_exception_flags);
BX_WRITE_XMM_REG(i->nnn(), result);
@ -2802,6 +2808,12 @@ void BX_CPU_C::CMPSD_VsdWsdIb(bxInstruction_c *i)
mxcsr_to_softfloat_status_word(status_word, MXCSR);
int ib = i->Ib();
/* mask used bits, ignore reserved */
if (ib > 7) {
BX_ERROR(("CMPSD_VsdWsdIb: unrecognized predicate %u", i->Ib()));
}
ib &= 7;
if (MXCSR.get_DAZ())
{
op1 = handleDAZ(op1);
@ -2814,19 +2826,16 @@ void BX_CPU_C::CMPSD_VsdWsdIb(bxInstruction_c *i)
} else {
result = 0;
}
} else if(ib < 8) {
} else {
if(compare64[ib-4](op1, op2, status_word)) {
result = 0;
} else {
result = BX_CONST64(0xFFFFFFFFFFFFFFFF);
}
} else {
BX_PANIC(("CMPPS_VsdWsdIb: unrecognized predicate %u", ib));
}
BX_CPU_THIS_PTR check_exceptionsSSE(status_word.float_exception_flags);
BX_WRITE_XMM_REG_LO_QWORD(i->nnn(), result);
#else
BX_INFO(("CMPSD_VsdWsdIb: required SSE2, use --enable-sse option"));
UndefinedOpcode(i);
@ -2858,6 +2867,12 @@ void BX_CPU_C::CMPSS_VssWssIb(bxInstruction_c *i)
mxcsr_to_softfloat_status_word(status_word, MXCSR);
int ib = i->Ib();
/* mask used bits, ignore reserved */
if (ib > 7) {
BX_ERROR(("CMPSS_VssWssIb: unrecognized predicate %u", i->Ib()));
}
ib &= 7;
if (MXCSR.get_DAZ())
{
op1 = handleDAZ(op1);
@ -2870,19 +2885,16 @@ void BX_CPU_C::CMPSS_VssWssIb(bxInstruction_c *i)
} else {
result = 0;
}
} else if(ib < 8) {
} else {
if(compare32[ib-4](op1, op2, status_word)) {
result = 0;
} else {
result = 0xFFFFFFFF;
}
} else {
BX_PANIC(("CMPPS_VssWssIb: unrecognized predicate %u", ib));
}
BX_CPU_THIS_PTR check_exceptionsSSE(status_word.float_exception_flags);
BX_WRITE_XMM_REG_LO_DWORD(i->nnn(), result);
#else
BX_INFO(("CMPSS_VssWssIb: required SSE, use --enable-sse option"));
UndefinedOpcode(i);