3 ms·

Why not?

• MBCook 6mo ago
  They don’t have to match. As an example, what about a divide instruction. A machine without an FPU can emulate a machine that has one. It will legitimately have to run hundreds/thousands of instructions to emulate a single divide instruction, it will certainly take longer. Thats OK, just means the emulation is slower doing that than something like add that the host has a native instruction for. In ‘emulator time’ you still only ran one instruction. That world is still consistent.
  • anematode 6mo ago
    ? That's not how Windows on ARM emulation works. It uses dynamic JIT translation from x86 to ARM. When the compiler sees, e.g., lock add [mem], reg presumably it'll emit a ldadd, but that will have different semantics if the operand is misaligned.
    • deleted 6mo ago
      [deleted]
  • cylemons 6mo ago
    You mean the locking would be done in software?