58 lines
1.5 KiB
Plaintext
Executable File
58 lines
1.5 KiB
Plaintext
Executable File
TODO (know issues in CPU model):
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-------------------------------
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[!] The following 3DNow! instructions still not implemented:
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PF2IW_PqQq
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PFNACC_PqQq
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PFPNACC_PqQq
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PFCMPGE_PqQq
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PFCMPGT_PqQq
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PFCMPEQ_PqQq
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PFMIN_PqQq
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PFMAX_PqQq
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PFRCP_PqQq
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PFRSQRT_PqQq
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PFSUB_PqQq
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PFSUBR_PqQq
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PFADD_PqQq
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PFACC_PqQq,
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PFMUL_PqQq
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PFRCPIT1_PqQq
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PFRSQIT1_PqQq
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PFRCPIT2_PqQq
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[!] CPUID does not report 3DNow! instruction set
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[!] Some of APIC functionality still not implemented, for example
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- LVT pins handling
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- Filter interrupts according processor priority (PPR)
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[!] REP NOP is PAUSE (on P4/XEON)
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When running in SMP mode, this means that we are in a spin loop.
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This processor should yield to the other one, as we are anyhow waiting
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for a lock, and any other processor is responsible for this.
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[!] Canonical fault in 64-bit mode not handled correctly in many many cases,
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the exception is just missed.
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[!] 32-bit linear address wrap when executing in legacy mode might be
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not implemented correctly for system memory accesses (like descriptor
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tables and etc)
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[!] AMD and Intel x86_64 implementations are different.
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Currently Bochs emulation is according to AMD version.
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Do we need to support both ?
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[!] More flexible CPUID - vendor and etc
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[!] VMX:
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- Dual-monitor treatment of SMIs and SMM not implemented yet
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- NMI virtualization, APIC virtualization not implemented yet
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- VMENTER to not-active state not supported yet
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- No advanced features like Extended Page Tables (EPT) or VPID
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[!] SSE4A, SSE5A, SMX, SVM, AVX
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