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do not cause tranition to MMX state if no MMX reg touched

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This commit is contained in:
Stanislav Shwartsman 2008-04-29 21:47:16 +00:00
parent 18b4dec094
commit affbdbefb4
1 changed files with 5 additions and 3 deletions
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8
bochs/cpu/sse_pfp.cc
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@ -1,5 +1,5 @@
/////////////////////////////////////////////////////////////////////////
// $Id: sse_pfp.cc,v 1.46 2008-04-20 14:10:44 sshwarts Exp $
// $Id: sse_pfp.cc,v 1.47 2008-04-29 21:47:16 sshwarts Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2003 Stanislav Shwartsman
@ -85,16 +85,17 @@ void BX_CPP_AttrRegparmN(1) BX_CPU_C::CVTPI2PS_VpsQq(bxInstruction_c *i)
{
#if BX_SUPPORT_SSE >= 1
BX_CPU_THIS_PTR prepareSSE();
BX_CPU_THIS_PTR prepareFPU2MMX();
BxPackedMmxRegister op;
BxPackedXmmRegister result;
/* op is a register or memory reference */
if (i->modC0()) {
BX_CPU_THIS_PTR prepareFPU2MMX();
op = BX_READ_MMX_REG(i->rm());
}
else {
// do not cause transition to MMX state if no MMX register touched
BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
/* pointer, segment address pair */
MMXUQ(op) = read_virtual_qword(i->seg(), RMAddr(i));
@ -123,16 +124,17 @@ void BX_CPP_AttrRegparmN(1) BX_CPU_C::CVTPI2PD_VpdQq(bxInstruction_c *i)
{
#if BX_SUPPORT_SSE >= 2
BX_CPU_THIS_PTR prepareSSE();
BX_CPU_THIS_PTR prepareFPU2MMX();
BxPackedMmxRegister op;
BxPackedXmmRegister result;
/* op is a register or memory reference */
if (i->modC0()) {
BX_CPU_THIS_PTR prepareFPU2MMX();
op = BX_READ_MMX_REG(i->rm());
}
else {
// do not cause transition to MMX state if no MMX register touched
BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
/* pointer, segment address pair */
MMXUQ(op) = read_virtual_qword(i->seg(), RMAddr(i));