FEXCore: Fallback to the memcpy slow path for overlaps within 32 bytes #3501
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Take e.g a forward rep movsb copy from addr 0 to 1, the expected behaviour since this is a bytewise copy is: before: aaabbbb... after: aaaaaaa... but by copying in 32-byte chunks we end up with: after: aaaabbbb... due to the self overwrites not occuring within a single 32 bit copy.
alyssarosenzweig
approved these changes
Mar 20, 2024
Sonicadvance1
approved these changes
Mar 21, 2024
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Take e.g a forward rep movsb copy from addr 0 to 1, the expected
behaviour since this is a bytewise copy is:
before: aaabbbb...
after: aaaaaaa...
but by copying in 32-byte chunks we end up with:
after: aaaabbbb...
due to the self overwrites not occuring within a single 32 bit copy.
Fixes: #3498
Also removes a needless alignment check.