diff options
Diffstat (limited to 'include/opcode/i386.h')
| -rw-r--r-- | include/opcode/i386.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/opcode/i386.h b/include/opcode/i386.h index c46c86d..76b5172 100644 --- a/include/opcode/i386.h +++ b/include/opcode/i386.h @@ -555,7 +555,11 @@ static const template i386_optab[] = {"bound", 2, 0x62, X, Cpu186|CpuNo64, wl_Suf|Modrm, { WordReg, WordMem, 0} }, {"hlt", 0, 0xf4, X, 0, NoSuf, { 0, 0, 0} }, -/* nop is actually 'xchgl %eax, %eax'. */ + +{"nop", 1, 0x0f1f, X, Cpu686, wl_Suf|Modrm, { WordMem, 0, 0} }, + +/* nop is actually "xchg %ax,%ax" in 16bit mode, "xchg %eax,%eax" in + 32bit mode and "xchg %rax,%rax" in 64bit mode. */ {"nop", 0, 0x90, X, 0, NoSuf, { 0, 0, 0} }, /* Protection control. */ |