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instrs: Add reserved NOP/PREFETCH as weak opcodes

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Alexis Engelke
2021-01-10 16:50:27 +01:00
parent f1e18c208c
commit 80df5ff47c
3 changed files with 51 additions and 25 deletions
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26
instrs.txt
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@@ -347,11 +347,8 @@ F2.0f09 NP - - - - WBINVD
0f0d/0m M MEM8 - - - PREFETCH
0f0d/1m M MEM8 - - - PREFETCHW
0f0d/2m M MEM8 - - - PREFETCHWT1
0f0d/3m M MEM8 - - - RESERVED_PREFETCH
0f0d/4m M MEM8 - - - RESERVED_PREFETCH
0f0d/5m M MEM8 - - - RESERVED_PREFETCH
0f0d/6m M MEM8 - - - RESERVED_PREFETCH
0f0d/7m M MEM8 - - - RESERVED_PREFETCH
# All other slots are reserved, AMD maps them to /0
*0f0d/m M MEM8 - - - RESERVED_PREFETCH ONLYAMD
0f0e NP - - - - FEMMS ONLYAMD
# TODO: actually decode 3DNow! instructions. Given that 3DNow! no longer exists,
# this is unlikely to happen, though.
@@ -360,15 +357,16 @@ F2.0f09 NP - - - - WBINVD
0f18/1m M MEM8 - - - PREFETCHT0
0f18/2m M MEM8 - - - PREFETCHT1
0f18/3m M MEM8 - - - PREFETCHT2
0f18/0r M GP - - - RESERVED_NOP
0f18/1r M GP - - - RESERVED_NOP
0f18/2r M GP - - - RESERVED_NOP
0f18/3r M GP - - - RESERVED_NOP
0f18/4 M GP - - - RESERVED_NOP
0f18/5 M GP - - - RESERVED_NOP
0f18/6 M GP - - - RESERVED_NOP
0f18/7 M GP - - - RESERVED_NOP
0f1f M GP - - - NOP
# Reserved NOPs are weak, they can be overridden by other instructions.
*0f18 MR GP GP - - RESERVED_NOP
*0f19 MR GP GP - - RESERVED_NOP
*0f1a MR GP GP - - RESERVED_NOP
*0f1b MR GP GP - - RESERVED_NOP
*0f1c MR GP GP - - RESERVED_NOP
*0f1d MR GP GP - - RESERVED_NOP
*0f1e MR GP GP - - RESERVED_NOP
*0f1f MR GP GP - - RESERVED_NOP
0f1f/0 M GP - - - NOP
0f20 MR GP CR - - MOV_CR DEF64 IGN66
0f21 MR GP DR - - MOV_DR DEF64 IGN66
0f22 RM CR GP - - MOV_CR DEF64 IGN66