I've been on-and-off working on a disassembler for jitted x86 functions in Racket, and it now seems to work well enough to show other people.
You can find it at http://github.com/samth/disassemble . You'll need `ndisasm' in your path. To use it, try something like this: [sa...@punge:~/sw/disassemble (master) plt] racket Welcome to Racket v5.0.99.6. > (enter! "decompiler.rkt") > (define (const x) 1) > (const 3) ;; makes sure that `const' is jitted 1 > (decompile const) 00000000 8943FC mov [ebx-0x4],eax 00000003 83C3FC add ebx,byte -0x4 00000006 B803000000 mov eax,0x3 0000000B 83C41C add esp,byte +0x1c 0000000E 5F pop edi 0000000F 5E pop esi 00000010 5B pop ebx 00000011 5D pop ebp 00000012 C3 ret Currently, `decompile' takes a #:size parameter which specifies how many bytes to decompile, because it doesn't understand x86 code enough to find the end of the function. Patches, uses, complaints, and suggestions are all welcome. Thanks to Felix Klock and Matthew Flatt for advice, and to Stevie Strickland and Vincent St-Amour for derision. -- sam th sa...@ccs.neu.edu _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
