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generic cpuid: automatically enable lzcnt of bmi is enabled; sse4a support in cpuid

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This commit is contained in:
Stanislav Shwartsman 2011-09-18 18:17:34 +00:00
parent 6fb673b9fa
commit d489ba3d37
1 changed files with 8 additions and 2 deletions
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10
bochs/cpu/generic_cpuid.cc
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@ -765,7 +765,7 @@ void bx_generic_cpuid_t::init_isa_extensions_bitmask(void)
static unsigned bmi_enabled = SIM->get_param_num(BXPN_CPUID_BMI)->get();
if (bmi_enabled) {
features_bitmask |= BX_CPU_BMI1;
features_bitmask |= BX_CPU_BMI1 | BX_CPU_LZCNT;
if (! avx_enabled) {
BX_PANIC(("PANIC: Bit Manipulation Instructions (BMI) emulation requires AVX support !"));
@ -1204,7 +1204,7 @@ Bit32u bx_generic_cpuid_t::get_ext2_cpuid_features(void) const
// [18:17] reserved
// [19:19] NodeId: Indicates support for NodeId MSR (0xc001100c)
// [20:20] reserved
// [21:21] TBM: trailing bit manipulation instruction support
// [21:21] TBM: trailing bit manipulation instructions support
// [22:22] Topology extensions support
// [31:23] reserved
@ -1217,6 +1217,12 @@ Bit32u bx_generic_cpuid_t::get_ext2_cpuid_features(void) const
features |= BX_CPUID_EXT2_MISALIGNED_SSE;
#endif
if (BX_CPUID_SUPPORT_ISA_EXTENSION(BX_CPU_LZCNT))
features |= BX_CPUID_EXT2_LZCNT;
if (BX_CPUID_SUPPORT_ISA_EXTENSION(BX_CPU_SSE4A))
features |= BX_CPUID_EXT2_SSE4A;
return features;
}