Open mahmoodn opened 5 years ago
Hey Mahmood, I think you found a nearby repository, but not the one you wanted.
I think you wanted this one: https://github.com/xoreaxeaxeax/sandsifter
And the info you requested is in https://github.com/xoreaxeaxeax/sandsifter/blob/master/references/domas_breaking_the_x86_isa_wp.pdf
Chris, Regarding your method to find undocumented instructions, I would like to know how did you catch undefined opcodes? I have written a single line of assembly code in C which is
__asm__(".byte 0x00");
. GDB then showsAs you can see the compiler combines 00 with other things and create an instruction. Therefore, I get segmentation fault.