CS450 Compiler Design
47
Interpreters
Q: Why are abstract
machines useful?
2) Abstract
machines are useful for testing and debugging.
Example: Testing the
“Ultima” processor using hardware emulation
Ultima
x86
x86
Ultima
º
Ultima
P
Ultima
P
Functional equivalence
Note: we don’t have to
implement Ultima emulator directly in x86; we can use a high-level
language and compile it to x86.