| 9,7 → 9,7 |
|---|
| |
| |
| DRV_COMPAT equ 5 ;minimal required drivers version |
| DRV_CURRENT equ 5 ;current drivers model version |
| DRV_CURRENT equ 6 ;current drivers model version |
| |
| DRV_VERSION equ (DRV_COMPAT shl 16) or DRV_CURRENT |
| PID_KERNEL equ 1 ;os_idle thread |
| 17,6 → 17,9 |
|---|
| align 4 |
| proc attach_int_handler stdcall, irq:dword, handler:dword, access_rights:dword |
| |
| pushfd |
| cli |
| |
| push ebx |
| |
| mov ebx, [irq] ;irq num |
| 27,51 → 30,26 |
|---|
| mov eax, [handler] |
| test eax, eax |
| jz .err |
| cmp [irq_owner + 4 * ebx], 0 |
| je @f |
| |
| mov ecx, [irq_rights + 4 * ebx] ; Rights : 0 - full access, 1 - read only, 2 - forbidden |
| test ecx, ecx |
| jnz .err |
| |
| @@: |
| mov [irq_tab+ebx*4], eax |
| |
| mov eax, [access_rights] |
| mov [irq_rights + 4 * ebx], eax |
| |
| mov [irq_owner + 4 * ebx], PID_KERNEL ; all handlers belong to a kernel |
| |
| stdcall enable_irq, [irq] |
| pop ebx |
| mov eax, 1 |
| popfd |
| ret |
| .err: |
| pop ebx |
| xor eax, eax |
| popfd |
| ret |
| endp |
| |
| uglobal |
| |
| irq_rights rd 16 |
| |
| endg |
| |
| proc get_int_handler stdcall, irq:dword |
| |
| mov eax, [irq] |
| |
| cmp [irq_rights + 4 * eax], dword 1 |
| ja .err |
| |
| mov eax, [irq_tab + 4 * eax] |
| ret |
| |
| .err: |
| xor eax, eax |
| ret |
| |
| endp |
| |
| align 4 |