forked from Bananymous/banan-os
17 lines
241 B
ArmAsm
17 lines
241 B
ArmAsm
|
.global spinlock_lock_asm
|
||
|
|
spinlock_lock_asm:
|
||
|
|
lock; btsl $0, (%edi)
|
||
|
|
jnc .done
|
||
|
|
.retry:
|
||
|
|
pause
|
||
|
|
testl $1, (%edi)
|
||
|
|
jne .retry
|
||
|
|
lock; btsl $0, (%edi)
|
||
|
|
jc .retry
|
||
|
|
.done:
|
||
|
|
ret
|
||
|
|
|
||
|
|
.global spinlock_unlock_asm
|
||
|
|
spinlock_unlock_asm:
|
||
|
|
movl $0, (%edi)
|
||
|
|
ret
|