Bochs/bochs/cpu/todo

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2005-08-10 23:04:19 +04:00
TODO (know issues in CPU model):
-------------------------------
[!] The following 3DNow! instructions still not implemented:
PF2IW_PqQq
PFNACC_PqQq
PFPNACC_PqQq
PFCMPGE_PqQq
PFCMPGT_PqQq
PFCMPEQ_PqQq
PFMIN_PqQq
PFMAX_PqQq
PFRCP_PqQq
PFRSQRT_PqQq
PFSUB_PqQq
PFSUBR_PqQq
PFADD_PqQq
PFACC_PqQq,
PFMUL_PqQq
PFRCPIT1_PqQq
PFRSQIT1_PqQq
PFRCPIT2_PqQq
[!] CPUID does not report 3DNow! instruction set
[!] Some of APIC functionality still not implemented, for example
2008-12-12 00:00:01 +03:00
- LVT pins handling
- Filter interrupts according processor priority (PPR)
2005-08-10 23:04:19 +04:00
[!] REP NOP is PAUSE (on P4/XEON)
When running in SMP mode, this means that we are in a spin loop.
This processor should yield to the other one, as we are anyhow waiting
for a lock, and any other processor is responsible for this.
2008-04-08 21:59:51 +04:00
[!] 32-bit linear address wrap when executing in legacy mode might be
2008-04-16 09:41:43 +04:00
not implemented correctly for system memory accesses (like descriptor
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tables and etc)
2008-02-03 00:46:54 +03:00
[!] AMD and Intel x86_64 implementations are different.
2009-10-02 20:09:08 +04:00
Currently Bochs emulation is according to Intel version.
Do we need to support both ?
[!] More flexible CPUID - vendor and etc
2009-01-31 14:34:51 +03:00
[!] VMX:
- Dual-monitor treatment of SMIs and SMM not implemented yet
- VMENTER to not-active state not supported yet
2010-03-16 17:51:20 +03:00
[!] SSE4A, SMX, SVM, AVX