This was an up-to-date libdasm fork, but I never got the time.

If you're looking for a good and open disassembly engine, you should check Capstone

It's public domain.

updates

added opcodes : * 0xf6-0xf7 group 3 xx001xxx test * 0xc0-0xc1 group 2 xx110xxx sal

fixes : * 0xd9 0xd0-0xff fpu * 0x8c mov segment register * 0x0f 0xb6-0xb7 movzx

test

libdasm\examples>das test32.bin 00000000 d9e0 fchs 00000002 d9e1 fabs 00000004 90 nop 00000005 f60000 test byte [eax],0x0 00000008 f60800 test byte [eax],0x0 0000000b f70000000000 test dword [eax],0x0 00000011 f70800000000 test dword [eax],0x0 00000017 90 nop 00000018 8c00 mov [eax],es 0000001a 90 nop 0000001b 0fb700 movzx eax,[eax] 0000001e 0fb600 movzx eax,[eax] 00000021 0fb68000000000 movzx eax,[eax+0x0] 00000028 90 nop 00000029 c03000 sal byte [eax],0x0 0000002c c13000 sal dword [eax],0x0 0000002f 90 nop ...

credits and links

thanks to : * Georg Wicherski * Silvio Cesare * Ero Carrera * BeatriX and of course, jt, the original author of libdasm.

other disassembly engines: * Distorm64 * BeaEngine * libdisasm * Hacker Disassembler Engine * libdisassemble * Udis86

documentation: * Intel * AMD * Sandpile.org * x86 instruction reference