Virtual Machines – Architectures, Implementations, and ... - Hot Chips

Binary Translation Example
x86 Source Binary
addl %edx,4(%eax)
movl 4(%eax),%edx
add %eax,4
PowerPC Target
addi r16,r4,4 ;add 4 to %eax
lwzx r17,r2,r16 ;load operand from memory
add r7,r17,r7 ;perform add of %edx
stwx r7,r2,r16 ;store %edx value into memory
mr r4,r16 ;move update value into %eax
addi r3,r3,9 ;update PC (9 bytes)
August 2005 VM Intro (c) 2005, J. E. Smith 34