| commit | bb72f7f111abe0e01081506caa11afdf37b95857 | |
| author | H. Peter Anvin <hpa@zytor.com> | |
| Tue, 13 Nov 2007 06:55:27 +0000 (12 22:55 -0800) | ||
| committer | H. Peter Anvin <hpa@zytor.com> | |
| Tue, 13 Nov 2007 06:56:07 +0000 (12 22:56 -0800) | ||
| tree | 8a7e6b8fdca3c24701cb95fb93ed82304b509ffa | treesnapshot (tar.gz zip) |
| parent | fb0c90cdbeb63e08ffeaa5377b13e5c7743cec00 | commitdiff |
Un-special-case "xchg rax,rax"; disassemble o64
Un-special-case "xchg rax,rax"; allow it to be encoded as 48 90 for
orthogonality's sake. It's a no-op, to be sure, but so are many other
instructions.
"xchg eax,eax" is still special-cased in 64-bit mode since it is not a
no-op; unadorned opcode 90 is now simply "nop" and nothing else.
Make the disassembler detect unused REX.W and display them as an "o64"
prefix.
Un-special-case "xchg rax,rax"; allow it to be encoded as 48 90 for
orthogonality's sake. It's a no-op, to be sure, but so are many other
instructions.
"xchg eax,eax" is still special-cased in 64-bit mode since it is not a
no-op; unadorned opcode 90 is now simply "nop" and nothing else.
Make the disassembler detect unused REX.W and display them as an "o64"
prefix.
| disasm.c | diffblobblamehistory | |
| insns.dat | diffblobblamehistory | |
| test/nop.asm | [new file with mode: 0644] | blob |