| 3933,52 → 3933,67 |
|---|
| align 4 |
| |
| get_irq_data: |
| movzx esi, bh ; save number of subfunction, if bh = 1, return data size, otherwise, read data |
| xor bh, bh |
| cmp ebx,16 |
| jae .not_owner |
| mov eax, [4 * ebx + irq_owner] |
| mov edx, [4 * ebx + irq_owner] ; check for irq owner |
| |
| mov edi,[TASK_BASE] |
| mov eax,[TASK_BASE] |
| |
| cmp eax,[edi+TASKDATA.pid] |
| cmp edx,[eax+TASKDATA.pid] |
| je gidril1 |
| .not_owner: |
| mov [esp+28],dword 2 ; ecx=2 |
| ret |
| xor edx, edx |
| dec edx |
| jmp gid1 |
| |
| gidril1: |
| |
| shl ebx,12 |
| xor ecx, ecx |
| inc ecx |
| lea eax,[ebx + IRQ_SAVE] |
| mov edx,[eax] |
| test edx,edx |
| lea eax, [ebx + IRQ_SAVE] ; calculate address of the beginning of buffer + 0x0 - data size |
| mov edx, [eax] ; + 0x4 - data offset |
| dec esi |
| jz gid1 |
| test edx, edx ; check if buffer is empty |
| jz gid1 |
| |
| dec edx |
| mov [eax], edx |
| mov ebx, [eax + 0x4] |
| mov edi, ecx |
| |
| mov ecx, [eax + 0x4] |
| mov ecx, 4000 ; buffer size, used frequently |
| |
| cmp ecx, 4000 |
| cmp ebx, ecx ; check for the end of buffer, if end of buffer, begin cycle again |
| jb @f |
| |
| xor ecx, ecx |
| xor ebx, ebx |
| |
| @@: |
| inc ecx |
| mov [eax + 0x4], ecx |
| dec ecx |
| add eax, ecx |
| |
| movzx ebx,byte [eax + 0x10] |
| lea esi, [ebx + edx] ; calculate data size and offset |
| cld |
| cmp esi, ecx ; if greater than the buffer size, begin cycle again |
| jbe @f |
| |
| xor ecx, ecx |
| sub ecx, ebx |
| sub edx, ecx |
| |
| lea esi, [eax + ebx + 0x10] |
| rep movsb |
| |
| xor ebx, ebx |
| @@: |
| lea esi, [eax + ebx + 0x10] |
| mov ecx, edx |
| add ebx, edx |
| |
| rep movsb |
| mov edx, [eax] |
| mov [eax], ecx ; set data size to zero |
| mov [eax + 0x4], ebx ; set data offset |
| |
| gid1: |
| mov [esp+32],edx |
| mov [esp+28],ecx |
| mov [esp+20],ebx |
| mov [esp+32], edx ; eax |
| ret |
| |
| |