1171,8 → 1171,6 |
|
align 4 |
sysfn_meminfo: |
|
; add ecx, new_app_base |
cmp ecx, OS_BASE |
jae .fail |
|
1448,3 → 1446,97 |
.done: |
ret |
endp |
|
FUTEX_INIT equ 0 |
FUTEX_WAIT equ 1 |
FUTEX_WAKE equ 2 |
|
align 4 |
f77call: |
dd f77.futex_init ;0 |
dd f77.futex_wait ;1 |
dd f77.futex_wake ;2 |
|
align 4 |
sys_synchronization: |
f77: |
cmp ebx, FUTEX_WAKE |
ja .fail |
|
jmp dword [f77call+ebx*4] |
|
.fail: |
mov [esp+32], dword 0 |
ret |
|
|
align 4 |
.futex_init: |
call create_futex |
test eax, eax |
jz @F |
mov eax, [eax+FUTEX.handle] |
@@: |
mov [esp+32], eax |
ret |
|
align 4 |
.futex_wait: |
cmp ecx, 3 |
jb .epicfail |
cmp ecx, (PROC.pdt_0 - PROC.htab)/4 |
jae .epicfail |
|
mov esi, [current_process] |
mov edi, [esi+PROC.htab+ecx*4] |
|
cmp [edi+FUTEX.magic], 'FUTX' |
jne .epicfail |
cmp [edi+FUTEX.handle], ecx |
jne .epicfail |
|
mov ecx, [edi+FUTEX.pointer] |
mov edx, 1 |
mov eax, [ecx] |
test eax, eax |
jnz .wait_slow |
lock cmpxchg [ecx], edx |
jz .ok |
|
.wait_slow: |
pushfd |
cli |
|
sub esp, sizeof.MUTEX_WAITER |
mov ebx, [TASK_BASE] |
mov [ebx+TASKDATA.state], 1 |
mov [esp+MUTEX_WAITER.task], ebx |
lea esi, [edi+FUTEX.wait_list] |
|
list_add_tail esp, esi ;esp= new waiter, esi= list head |
|
.again: |
call change_task |
|
mov eax, [ecx] |
test eax, eax |
jnz .again |
lock cmpxchg [ecx], edx |
jnz .again |
|
list_del esp |
add esp, sizeof.MUTEX_WAITER |
|
popfd |
.ok: |
mov [esp+32], eax |
ret |
|
.epicfail: |
mov [esp+32], dword -1 |
ret |
|
align 4 |
.futex_wake: |
ret |
|