running x86 program _on_ llvm

Question

Is it possible to use llvm to run x86 programs? I.e. I want to use llvm as an x86 simulator to run x86 programs and then instrument the x86 program.

Thanks!

Answer 1

I don't know libCPU, but there is libx86, which does something very similar; if running on an 32-bit x86 processor (but not in 64-bit mode), it runs a virtual 8086 process, if running elsewhere, it tries to emulate the 8086 in software. Pretty cool. Documentation is relatively scarce though.

http://www.codon.org.uk/~mjg59/libx86/