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 (like spurious interrupt vector) still
not implemented
2005-09-05 21:50:37 +04:00
[!] No support of AC flag (aligment checking) and #AC exception
2005-11-22 00:15:35 +03:00
#AC exception should be generated if trying to do unaligned memory
access when
CPL == 3 && CR.AM == 1 && EFLAGS.AC == 1
[!] 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.