| 217,7 → 217,108 |
|---|
| @@: ret |
| ;end. |
| |
| |
| |
| struc MUTEX_WAITER |
| { |
| .next rd 1 |
| .prev rd 1 |
| .task rd 1 |
| .sizeof: |
| }; |
| |
| virtual at 0 |
| MUTEX_WAITER MUTEX_WAITER |
| end virtual |
| |
| ;void __fastcall mutex_init(struct mutex *lock) |
| |
| align 4 |
| mutex_init: |
| lea eax, [ecx+MUTEX.next] |
| mov [ecx+MUTEX.count],1 |
| mov [ecx+MUTEX.next], eax |
| mov [ecx+MUTEX.prev], eax |
| ret |
| |
| |
| ;void __fastcall mutex_lock(struct mutex *lock) |
| |
| align 4 |
| mutex_lock: |
| |
| dec [ecx+MUTEX.count] |
| jns .done |
| |
| pushfd |
| cli |
| |
| push esi |
| sub esp, MUTEX_WAITER.sizeof |
| |
| mov eax, [ecx+MUTEX.prev] |
| lea esi, [ecx+MUTEX.next] |
| |
| mov [ecx+MUTEX.prev], esp |
| mov [esp+MUTEX_WAITER.next], esi |
| mov [esp+MUTEX_WAITER.prev], eax |
| mov [eax], esp |
| |
| mov edx, [TASK_BASE] |
| mov [esp+MUTEX_WAITER.task], edx |
| |
| .forever: |
| |
| mov eax, -1 |
| xchg eax, [ecx+MUTEX.count] |
| dec eax |
| jz @F |
| |
| mov [edx+TASKDATA.state], 1 |
| call change_task |
| jmp .forever |
| @@: |
| mov edx, [esp+MUTEX_WAITER.next] |
| mov eax, [esp+MUTEX_WAITER.prev] |
| |
| mov [eax+MUTEX_WAITER.next], edx |
| cmp [ecx+MUTEX.next], esi |
| mov [edx+MUTEX_WAITER.prev], eax |
| jne @F |
| |
| mov [ecx+MUTEX.count], 0 |
| @@: |
| add esp, MUTEX_WAITER.sizeof |
| |
| pop esi |
| popfd |
| .done: |
| ret |
| |
| ;void __fastcall mutex_unlock(struct mutex *lock) |
| |
| align 4 |
| mutex_unlock: |
| |
| pushfd |
| cli |
| |
| lea eax, [ecx+MUTEX.next] |
| cmp eax, [ecx+MUTEX.next] |
| mov [ecx+MUTEX.count], 1 |
| je @F |
| |
| mov eax, [eax+MUTEX_WAITER.task] |
| mov [eax+TASKDATA.state], 0 |
| @@: |
| popfd |
| ret |
| |
| |
| purge MUTEX_WAITER |
| |
| if 0 |
| |
| struc TIMER |
| { |
| .next dd ? |