21 lines
248 B
ArmAsm
21 lines
248 B
ArmAsm
|
.sect .text; .sect .rom; .sect .data; .sect .bss
|
||
|
|
.define .exg
|
||
|
|
|
||
|
|
! #bytes in ecx
|
||
|
|
.sect .text
|
||
|
|
.exg:
|
||
|
|
push edi
|
||
|
|
mov esp,edi
|
||
|
|
add edi,8
|
||
|
|
mov ebx,edi
|
||
|
|
add ebx,ecx
|
||
|
|
sar ecx,2
|
||
|
|
1:
|
||
|
|
mov eax,(ebx)
|
||
|
|
xchg eax,(edi)
|
||
|
|
mov (ebx),eax
|
||
|
|
loop 1b
|
||
|
|
2:
|
||
|
|
pop edi
|
||
|
|
ret
|