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added comments to cpuid and msr defs

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This commit is contained in:
Stanislav Shwartsman 2024-11-16 18:45:01 +02:00
parent abe3a6fba3
commit 305539aae6
2 changed files with 4 additions and 0 deletions
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1
bochs/cpu/cpuid.cc
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@ -251,6 +251,7 @@ void bx_cpuid_t::get_std_cpuid_xsave_leaf(Bit32u subfunction, cpuid_function_t *
// EAX[1] - support for compaction extensions to the XSAVE feature set // EAX[1] - support for compaction extensions to the XSAVE feature set
// EAX[2] - support for execution of XGETBV with ECX = 1 // EAX[2] - support for execution of XGETBV with ECX = 1
// EAX[3] - support for XSAVES, XRSTORS, and the IA32_XSS MSR // EAX[3] - support for XSAVES, XRSTORS, and the IA32_XSS MSR
// EAX[4] - support for XFD
leaf->eax = 0; leaf->eax = 0;
if (is_cpu_extension_supported(BX_ISA_XSAVEOPT)) if (is_cpu_extension_supported(BX_ISA_XSAVEOPT))
leaf->eax |= 0x1; leaf->eax |= 0x1;

3
bochs/cpu/msr.h
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@ -42,6 +42,9 @@ enum MSR_Register {
BX_MSR_SYSENTER_EIP = 0x176, BX_MSR_SYSENTER_EIP = 0x176,
#endif #endif
BX_MSR_IA32_XFD = 0x1c4,
BX_MSR_IA32_XFD_ERROR = 0x1c5,
BX_MSR_DEBUGCTLMSR = 0x1d9, BX_MSR_DEBUGCTLMSR = 0x1d9,
BX_MSR_LASTBRANCHFROMIP = 0x1db, BX_MSR_LASTBRANCHFROMIP = 0x1db,
BX_MSR_LASTBRANCHTOIP = 0x1dc, BX_MSR_LASTBRANCHTOIP = 0x1dc,