diff options
Diffstat (limited to 'x86/machine.m4')
| -rw-r--r-- | x86/machine.m4 | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/x86/machine.m4 b/x86/machine.m4 index 887bf3b3..38bee366 100644 --- a/x86/machine.m4 +++ b/x86/machine.m4 @@ -1,3 +1,16 @@ C OFFSET(i) C Expands to 4*i, or to the empty string if i is zero define(<OFFSET>, <ifelse($1,0,,eval(4*$1))>) + +dnl LREG(reg) gives the 8-bit register corresponding to the given 32-bit register. +define(<LREG>,<ifelse( + $1, %eax, %al, + $1, %ebx, %bl, + $1, %ecx, %cl, + $1, %edx, %dl)>)dnl + +define(<HREG>,<ifelse( + $1, %eax, %ah, + $1, %ebx, %bh, + $1, %ecx, %ch, + $1, %edx, %dh)>)dnl |