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XSAVE: Fixed XCR0 reserved combination checking in XSETBV instruction

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Stanislav Shwartsman 2012-12-23 16:54:18 +00:00
parent ce2751a13c
commit 6e5a934eea
1 changed files with 2 additions and 2 deletions
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4
bochs/cpu/xsave.cc
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@ -425,13 +425,13 @@ BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::XSETBV(bxInstruction_c *i)
exception(BX_GP_EXCEPTION, 0);
}
if (EDX != 0 || (EAX & ~BX_CPU_THIS_PTR xcr0_suppmask) != 0 || (EAX & 1) == 0) {
if (EDX != 0 || (EAX & ~BX_CPU_THIS_PTR xcr0_suppmask) != 0 || (EAX & BX_XCR0_FPU_MASK) == 0) {
BX_ERROR(("XSETBV: Attempting to change reserved bits!"));
exception(BX_GP_EXCEPTION, 0);
}
#if BX_SUPPORT_AVX
if ((EAX & (BX_XCR0_AVX_BIT | BX_XCR0_SSE_BIT)) == BX_XCR0_AVX_BIT) {
if ((EAX & (BX_XCR0_AVX_MASK | BX_XCR0_SSE_MASK)) == BX_XCR0_AVX_MASK) {
BX_ERROR(("XSETBV: Attempting to set AVX without SSE!"));
exception(BX_GP_EXCEPTION, 0);
}