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MXCSR.FUZ is ignoired for F16 instructions

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This commit is contained in:
Stanislav Shwartsman 2011-10-03 15:08:22 +00:00
parent fc9410ba41
commit 8a9b8f4622
1 changed files with 2 additions and 0 deletions
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2
bochs/cpu/avx_pfp.cc
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@ -1339,6 +1339,7 @@ BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::VCVTPH2PS_VpsWpsR(bxInstruction_c
float_status_t status;
mxcsr_to_softfloat_status_word(status, MXCSR);
status.flush_underflow_to_zero = 0; // ignore MXCSR.FUZ
for (unsigned n=0; n < (4*len); n++) {
result.avx32u(n) = float16_to_float32(op.xmm16u(n), status);
@ -1365,6 +1366,7 @@ BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::VCVTPS2PH_WpsVpsIb(bxInstruction_c
Bit8u control = i->Ib();
status.flush_underflow_to_zero = 0; // ignore MXCSR.FUZ
// override MXCSR rounding mode with control coming from imm8
if ((control & 0x4) == 0)
status.float_rounding_mode = control & 0x3;