| 1313,10 → 1313,9 |
|---|
| mov [esp+32], eax |
| ret |
| |
| |
| iglobal |
| align 4 |
| f68call: ; keep this table closer to main code |
| |
| f68call: |
| dd f68.11 ; init_heap |
| dd f68.12 ; user_alloc |
| dd f68.13 ; user_free |
| 1334,8 → 1333,8 |
|---|
| dd f68.25 ; unmask exception |
| dd f68.26 ; user_unmap |
| dd f68.27 ; load_file_umode |
| endg |
| |
| |
| align 4 |
| proc load_pe_driver stdcall, file:dword, cmdline:dword |
| push esi |
| 1447,130 → 1446,6 |
|---|
| 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 |
| ;ecx futex handle |
| ;edx new value |
| .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 eax, edx |
| lock cmpxchg [ecx], edx ;wait until old_value == new_value |
| jz .wait_slow |
| |
| mov [esp+SYSCALL_STACK._eax], 0 |
| ret |
| |
| .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 |
| |
| lock cmpxchg [ecx], edx |
| jz .again |
| |
| list_del esp |
| add esp, sizeof.MUTEX_WAITER |
| |
| popfd |
| mov [esp+SYSCALL_STACK._eax], 0 |
| ret |
| |
| .epicfail: |
| mov [esp+SYSCALL_STACK._eax], -1 |
| ret |
| |
| align 4 |
| .futex_wake: |
| 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 |
| |
| xor ecx, ecx |
| |
| pushfd |
| cli |
| |
| lea ebx, [edi+FUTEX.wait_list] |
| mov esi, [edi+FUTEX.wait_list.next] |
| @@: |
| cmp esi, ebx |
| je @F |
| |
| mov eax, [esi+MUTEX_WAITER.task] |
| mov [eax+TASKDATA.state], 0 |
| |
| mov esi, [esi+MUTEX_WAITER.list.next] |
| inc ecx |
| cmp ecx, edx |
| jb @B |
| @@: |
| popfd |
| mov [esp+SYSCALL_STACK._eax], ecx |
| ret |
| |
| |