forked from KolibriOS/kolibrios
1105 lines
24 KiB
PHP
1105 lines
24 KiB
PHP
$Revision: 431 $
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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DRV_COMPAT equ 4 ;minimal required drivers version
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DRV_CURRENT equ 4 ;current drivers model version
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DRV_VERSION equ (DRV_COMPAT shl 16) or DRV_CURRENT
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align 4
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proc attach_int_handler stdcall, irq:dword, handler:dword
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mov ebx, [irq] ;irq num
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test ebx, ebx
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jz .err
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mov eax, [handler]
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test eax, eax
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jz .err
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mov [irq_tab+ebx*4], eax
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stdcall enable_irq, [irq]
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ret
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.err:
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xor eax, eax
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ret
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endp
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align 4
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proc detach_int_handler
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ret
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endp
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align 4
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proc enable_irq stdcall, irq_line:dword
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mov ebx, [irq_line]
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mov edx, 0x21
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cmp ebx, 8
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jb @F
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mov edx, 0xA1
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sub ebx,8
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@@:
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in al,dx
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btr eax, ebx
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out dx, al
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ret
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endp
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align 16
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;; proc irq_serv
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irq_serv:
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.irq_1:
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push eax
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mov eax, 1
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jmp .main
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align 4
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.irq_2:
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push eax
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mov eax, 2
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jmp .main
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align 4
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.irq_3:
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push eax
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mov eax, 3
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jmp .main
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align 4
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.irq_4:
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push eax
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mov eax, 4
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jmp .main
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align 4
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.irq_5:
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push eax
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mov eax, 5
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jmp .main
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align 4
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.irq_6:
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push eax
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mov eax, 6
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jmp .main
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align 4
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.irq_7:
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push eax
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mov eax, 7
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jmp .main
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align 4
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.irq_8:
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push eax
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mov eax, 8
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jmp .main
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align 4
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.irq_9:
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push eax
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mov eax, 9
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jmp .main
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align 4
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.irq_10:
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push eax
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mov eax, 10
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jmp .main
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align 4
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.irq_11:
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push eax
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mov eax, 11
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jmp .main
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align 4
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.irq_12:
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push eax
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mov eax, 12
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jmp .main
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align 4
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.irq_13:
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push eax
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mov eax, 13
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jmp .main
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align 4
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.irq_14:
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push eax
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mov eax, 14
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jmp .main
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align 4
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.irq_15:
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push eax
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mov eax, 15
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jmp .main
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align 16
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.main:
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save_ring3_context
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mov bx, app_data ;os_data
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mov ds, bx
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mov es, bx
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mov ebx, [irq_tab+eax*4]
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test ebx, ebx
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jz .exit
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call ebx
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.exit:
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restore_ring3_context
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cmp eax, 8
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mov al, 0x20
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jb @f
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out 0xa0, al
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@@:
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out 0x20, al
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pop eax
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iret
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align 4
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proc get_notify stdcall, p_ev:dword
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.wait:
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mov ebx,[current_slot]
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test dword [ebx+APPDATA.event_mask],EVENT_NOTIFY
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jz @f
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and dword [ebx+APPDATA.event_mask], not EVENT_NOTIFY
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mov edi, [p_ev]
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mov dword [edi], EV_INTR
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mov eax, [ebx+APPDATA.event]
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mov dword [edi+4], eax
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ret
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@@:
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call change_task
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jmp .wait
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endp
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align 4
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proc pci_read32 stdcall, bus:dword, devfn:dword, reg:dword
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xor eax, eax
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xor ebx, ebx
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mov ah, byte [bus]
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mov al, 6
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mov bh, byte [devfn]
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mov bl, byte [reg]
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call pci_read_reg
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ret
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endp
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align 4
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proc pci_read8 stdcall, bus:dword, devfn:dword, reg:dword
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xor eax, eax
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xor ebx, ebx
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mov ah, byte [bus]
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mov al, 4
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mov bh, byte [devfn]
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mov bl, byte [reg]
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call pci_read_reg
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ret
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endp
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align 4
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proc pci_write8 stdcall, bus:dword, devfn:dword, reg:dword, val:dword
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xor eax, eax
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xor ebx, ebx
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mov ah, byte [bus]
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mov al, 8
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mov bh, byte [devfn]
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mov bl, byte [reg]
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mov ecx, [val]
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call pci_write_reg
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ret
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endp
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handle equ IOCTL.handle
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io_code equ IOCTL.io_code
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input equ IOCTL.input
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inp_size equ IOCTL.inp_size
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output equ IOCTL.output
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out_size equ IOCTL.out_size
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align 4
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proc srv_handler stdcall, ioctl:dword
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mov esi, [ioctl]
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test esi, esi
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jz .err
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mov edi, [esi+handle]
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cmp [edi+SRV.magic], ' SRV'
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jne .fail
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cmp [edi+SRV.size], SRV_SIZE
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jne .fail
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stdcall [edi+SRV.srv_proc], esi
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ret
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.fail:
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xor eax, eax
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not eax
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mov [esi+output], eax
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mov [esi+out_size], 4
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ret
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.err:
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xor eax, eax
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not eax
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ret
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endp
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; param
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; ebx= io_control
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;
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; retval
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; eax= error code
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align 4
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srv_handlerEx:
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cmp ebx, OS_BASE
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jae .fail
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mov eax, [ebx+handle]
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cmp [eax+SRV.magic], ' SRV'
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jne .fail
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cmp [eax+SRV.size], SRV_SIZE
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jne .fail
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stdcall [eax+SRV.srv_proc], ebx
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ret
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.fail:
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or eax, -1
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ret
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restore handle
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restore io_code
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restore input
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restore inp_size
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restore output
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restore out_size
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align 4
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proc get_service stdcall, sz_name:dword
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mov eax, [sz_name]
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test eax, eax
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jnz @F
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ret
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@@:
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mov edx, [srv.fd]
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@@:
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cmp edx, srv.fd-SRV_FD_OFFSET
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je .not_load
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stdcall strncmp, edx, [sz_name], 16
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test eax, eax
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je .ok
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mov edx, [edx+SRV.fd]
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jmp @B
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.not_load:
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pop ebp
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jmp load_driver
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.ok:
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mov eax, edx
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ret
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endp
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align 4
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reg_service:
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.sz_name equ esp+4
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.handler equ esp+8
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mov eax, [.sz_name]
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test eax, eax
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jz .fail
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mov ebx, [.handler]
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test ebx, ebx
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jz .fail
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mov eax, SRV_SIZE
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call malloc ;call alloc_service
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test eax, eax
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jz .fail
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mov edi, eax
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mov esi, [.sz_name]
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mov ecx, 16/4
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rep movsd
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mov [eax+SRV.magic], ' SRV'
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mov [eax+SRV.size], SRV_SIZE
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mov ebx, srv.fd-SRV_FD_OFFSET
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mov edx, [ebx+SRV.fd]
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mov [eax+SRV.fd], edx
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mov [eax+SRV.bk], ebx
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mov [ebx+SRV.fd], eax
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mov [edx+SRV.bk], eax
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mov ecx, [.handler]
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mov [eax+SRV.srv_proc], ecx
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ret 8
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.fail:
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xor eax, eax
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ret 8
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align 4
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proc get_proc stdcall, exp:dword, sz_name:dword
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mov edx, [exp]
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.next:
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mov eax, [edx]
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test eax, eax
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jz .end
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push edx
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stdcall strncmp, eax, [sz_name], 16
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pop edx
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test eax, eax
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jz .ok
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add edx,8
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jmp .next
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.ok:
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mov eax, [edx+4]
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.end:
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ret
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endp
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align 4
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proc get_coff_sym stdcall, pSym:dword,count:dword, sz_sym:dword
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@@:
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stdcall strncmp, [pSym], [sz_sym], 8
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test eax,eax
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jz .ok
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add [pSym], 18
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dec [count]
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jnz @b
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xor eax, eax
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ret
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.ok:
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mov ebx, [pSym]
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mov eax, [ebx+8]
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ret
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endp
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align 4
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proc get_curr_task
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mov eax,[CURRENT_TASK]
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shl eax, 8
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ret
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endp
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align 4
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proc get_fileinfo stdcall, file_name:dword, info:dword
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locals
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cmd dd ?
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offset dd ?
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dd ?
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count dd ?
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buff dd ?
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db ?
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name dd ?
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endl
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xor eax, eax
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mov ebx, [file_name]
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; sub ebx, new_app_base
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mov ecx, [info]
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; sub ecx, new_app_base
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mov [cmd], 5
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mov [offset], eax
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mov [offset+4], eax
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mov [count], eax
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mov [buff], ecx
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mov byte [buff+4], al
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mov [name], ebx
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mov eax, 70
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lea ebx, [cmd]
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; sub ebx, new_app_base
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int 0x40
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ret
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endp
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align 4
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proc read_file stdcall,file_name:dword, buffer:dword, off:dword,\
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bytes:dword
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locals
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cmd dd ?
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offset dd ?
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dd ?
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count dd ?
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buff dd ?
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db ?
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name dd ?
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endl
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xor eax, eax
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mov ebx, [file_name]
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mov ecx, [off]
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mov edx, [bytes]
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mov esi, [buffer]
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mov [cmd], eax
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mov [offset], ecx
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mov [offset+4], eax
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mov [count], edx
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mov [buff], esi
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mov byte [buff+4], al
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mov [name], ebx
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pushad
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push eax
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lea eax, [cmd]
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call file_system_lfn
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pop eax
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popad
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ret
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endp
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; description
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; allocate kernel memory and loads the specified file
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;
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; param
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; file_name= full path to file
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;
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; retval
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; eax= file image in kernel memory
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; ebx= size of file
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;
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; warging
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; You mast call kernel_free() to delete each file
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; loaded by the load_file() function
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align 4
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proc load_file stdcall, file_name:dword
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locals
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attr dd ?
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flags dd ?
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cr_time dd ?
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cr_date dd ?
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acc_time dd ?
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acc_date dd ?
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mod_time dd ?
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mod_date dd ?
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file_size dd ?
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file dd ?
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file2 dd ?
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endl
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lea eax, [attr]
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stdcall get_fileinfo, [file_name], eax
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test eax, eax
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jnz .fail
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mov eax, [file_size]
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cmp eax, 1024*1024*16
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ja .fail
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stdcall kernel_alloc, [file_size]
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mov [file], eax
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stdcall read_file, [file_name], eax, dword 0, [file_size]
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cmp ebx, [file_size]
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jne .cleanup
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mov eax, [file]
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cmp dword [eax], 0x4B43504B
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jne .exit
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mov ebx, [eax+4]
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mov [file_size], ebx
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stdcall kernel_alloc, ebx
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test eax, eax
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jz .cleanup
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mov [file2], eax
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stdcall unpack, [file], eax
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stdcall kernel_free, [file]
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mov eax, [file2]
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mov ebx, [file_size]
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.exit:
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push eax
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lea edi, [eax+ebx] ;cleanup remain space
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mov ecx, 4096 ;from file end
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and ebx, 4095
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sub ecx, ebx
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xor eax, eax
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cld
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rep stosb
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mov ebx, [file_size]
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pop eax
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ret
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.cleanup:
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stdcall kernel_free, [file]
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.fail:
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xor eax, eax
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xor ebx, ebx
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ret
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endp
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align 4
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proc get_proc_ex stdcall, proc_name:dword, imports:dword
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.look_up:
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mov edx, [imports]
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test edx, edx
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jz .end
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mov edx, [edx]
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test edx, edx
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jz .end
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.next:
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mov eax, [edx]
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test eax, eax
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jz .next_table
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push edx
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stdcall strncmp, eax, [proc_name], 16
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pop edx
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test eax, eax
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jz .ok
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add edx,8
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jmp .next
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.next_table:
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add [imports], 4
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jmp .look_up
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.ok:
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mov eax, [edx+4]
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ret
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.end:
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xor eax, eax
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ret
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endp
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align 4
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proc fix_coff_symbols stdcall, sec:dword, symbols:dword,\
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sym_count:dword, strings:dword, imports:dword
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locals
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retval dd ?
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endl
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mov edi, [symbols]
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mov [retval], 1
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.fix:
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movzx ebx, [edi+CSYM.SectionNumber]
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test ebx, ebx
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jnz .internal
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mov eax, dword [edi+CSYM.Name]
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test eax, eax
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jnz @F
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mov edi, [edi+4]
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add edi, [strings]
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@@:
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push edi
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stdcall get_proc_ex, edi,[imports]
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pop edi
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xor ebx, ebx
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test eax, eax
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jnz @F
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mov esi, msg_unresolved
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call sys_msg_board_str
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mov esi, edi
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call sys_msg_board_str
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mov esi, msg_CR
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call sys_msg_board_str
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mov [retval],0
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@@:
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mov edi, [symbols]
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mov [edi+CSYM.Value], eax
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jmp .next
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.internal:
|
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dec ebx
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shl ebx, 3
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lea ebx, [ebx+ebx*4]
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add ebx, [sec]
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mov eax, [ebx+CFS.VirtualAddress]
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add [edi+CSYM.Value], eax
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.next:
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add edi, CSYM_SIZE
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mov [symbols], edi
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dec [sym_count]
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jnz .fix
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mov eax, [retval]
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ret
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endp
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|
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align 4
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proc fix_coff_relocs stdcall, coff:dword, sec:dword, sym:dword
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locals
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n_sec dd ?
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endl
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mov eax, [coff]
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movzx ebx, [eax+CFH.nSections]
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mov [n_sec], ebx
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.fix_sec:
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mov esi, [sec]
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mov edi, [esi+CFS.PtrReloc]
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add edi, [coff]
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|
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movzx ecx, [esi+CFS.NumReloc]
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test ecx, ecx
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jz .next
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.next_reloc:
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mov ebx, [edi+CRELOC.SymIndex]
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add ebx,ebx
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lea ebx,[ebx+ebx*8]
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add ebx, [sym]
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mov edx, [ebx+CSYM.Value]
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|
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cmp [edi+CRELOC.Type], 6
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je .dir_32
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cmp [edi+CRELOC.Type], 20
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jne .next_reloc
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.rel_32:
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mov eax, [edi+CRELOC.VirtualAddress]
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add eax, [esi+CFS.VirtualAddress]
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sub edx, eax
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sub edx, 4
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jmp .fix
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.dir_32:
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mov eax, [edi+CRELOC.VirtualAddress]
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add eax, [esi+CFS.VirtualAddress]
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.fix:
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add [eax], edx
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add edi, 10
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dec ecx
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jnz .next_reloc
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.next:
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add [sec], COFF_SECTION_SIZE
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dec [n_sec]
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jnz .fix_sec
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.exit:
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ret
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endp
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align 4
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proc load_driver stdcall, driver_name:dword
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locals
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coff dd ?
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sym dd ?
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strings dd ?
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img_size dd ?
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img_base dd ?
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start dd ?
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|
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exports dd ? ;fake exports table
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dd ?
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file_name rb 14+16+4+1 ; '/rd/1/drivers/<up-to-16-chars>.obj'
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endl
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lea edx, [file_name]
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mov dword [edx], '/rd/'
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mov dword [edx+4], '1/dr'
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mov dword [edx+8], 'iver'
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mov word [edx+12], 's/'
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mov esi, [driver_name]
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lea edi, [edx+14]
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mov ecx, 16
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@@:
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lodsb
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test al, al
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jz @f
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stosb
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loop @b
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@@:
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mov dword [edi], '.obj'
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mov byte [edi+4], 0
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stdcall load_file, edx
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test eax, eax
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jz .exit
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mov [coff], eax
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|
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movzx ecx, [eax+CFH.nSections]
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xor ebx, ebx
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|
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lea edx, [eax+20]
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@@:
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add ebx, [edx+CFS.SizeOfRawData]
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add ebx, 15
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and ebx, not 15
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add edx, COFF_SECTION_SIZE
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dec ecx
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jnz @B
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mov [img_size], ebx
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|
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|
stdcall kernel_alloc, ebx
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|
test eax, eax
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|
jz .fail
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mov [img_base], eax
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|
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mov edi, eax
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xor eax, eax
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mov ecx, [img_size]
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add ecx, 4095
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and ecx, not 4095
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shr ecx, 2
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|
cld
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|
rep stosd
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|
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mov edx, [coff]
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movzx ebx, [edx+CFH.nSections]
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mov edi, [img_base]
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|
lea eax, [edx+20]
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|
@@:
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mov [eax+CFS.VirtualAddress], edi
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mov esi, [eax+CFS.PtrRawData]
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|
test esi, esi
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|
jnz .copy
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|
add edi, [eax+CFS.SizeOfRawData]
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|
jmp .next
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|
.copy:
|
|
add esi, edx
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|
mov ecx, [eax+CFS.SizeOfRawData]
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|
cld
|
|
rep movsb
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.next:
|
|
add edi, 15
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|
and edi, not 15
|
|
add eax, COFF_SECTION_SIZE
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|
dec ebx
|
|
jnz @B
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|
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|
mov ebx, [edx+CFH.pSymTable]
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|
add ebx, edx
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|
mov [sym], ebx
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|
mov ecx, [edx+CFH.nSymbols]
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|
add ecx,ecx
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|
lea ecx,[ecx+ecx*8] ;ecx*=18 = nSymbols*CSYM_SIZE
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|
add ecx, [sym]
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|
mov [strings], ecx
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|
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|
lea ebx, [exports]
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|
mov dword [ebx], kernel_export
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|
mov dword [ebx+4], 0
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|
lea eax, [edx+20]
|
|
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|
stdcall fix_coff_symbols, eax, [sym], [edx+CFH.nSymbols],\
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|
[strings], ebx
|
|
test eax, eax
|
|
jz .link_fail
|
|
|
|
mov ebx, [coff]
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|
add ebx, 20
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|
stdcall fix_coff_relocs, [coff], ebx, [sym]
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|
|
|
mov ebx, [coff]
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|
stdcall get_coff_sym,[sym],[ebx+CFH.nSymbols],szVersion
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|
test eax, eax
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|
jz .link_fail
|
|
|
|
mov eax, [eax]
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|
shr eax, 16
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|
cmp eax, DRV_COMPAT
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|
jb .ver_fail
|
|
|
|
cmp eax, DRV_CURRENT
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|
ja .ver_fail
|
|
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|
mov ebx, [coff]
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|
stdcall get_coff_sym,[sym],[ebx+CFH.nSymbols],szSTART
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|
mov [start], eax
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|
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|
stdcall kernel_free, [coff]
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|
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|
mov ebx, [start]
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|
stdcall ebx, DRV_ENTRY
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|
test eax, eax
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|
jnz .ok
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|
|
|
stdcall kernel_free, [img_base]
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|
xor eax, eax
|
|
ret
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|
.ok:
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|
mov ebx, [img_base]
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|
mov [eax+SRV.base], ebx
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|
mov ecx, [start]
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|
mov [eax+SRV.entry], ecx
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|
ret
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|
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|
.ver_fail:
|
|
mov esi, msg_CR
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|
call sys_msg_board_str
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|
mov esi, [driver_name]
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|
call sys_msg_board_str
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|
mov esi, msg_CR
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|
call sys_msg_board_str
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|
mov esi, msg_version
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|
call sys_msg_board_str
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|
mov esi, msg_www
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|
call sys_msg_board_str
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|
jmp .cleanup
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|
|
|
.link_fail:
|
|
mov esi, msg_module
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|
call sys_msg_board_str
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|
mov esi, [driver_name]
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|
call sys_msg_board_str
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|
mov esi, msg_CR
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|
call sys_msg_board_str
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|
.cleanup:
|
|
stdcall kernel_free,[img_base]
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|
.fail:
|
|
stdcall kernel_free, [coff]
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|
.exit:
|
|
xor eax, eax
|
|
ret
|
|
endp
|
|
|
|
align 4
|
|
proc load_library stdcall, file_name:dword
|
|
locals
|
|
coff dd ?
|
|
sym dd ?
|
|
strings dd ?
|
|
img_size dd ?
|
|
img_base dd ?
|
|
exports dd ?
|
|
endl
|
|
|
|
cli
|
|
|
|
stdcall load_file, [file_name]
|
|
test eax, eax
|
|
jz .fail
|
|
|
|
mov [coff], eax
|
|
movzx ecx, [eax+CFH.nSections]
|
|
xor ebx, ebx
|
|
|
|
lea edx, [eax+20]
|
|
@@:
|
|
add ebx, [edx+CFS.SizeOfRawData]
|
|
add ebx, 15
|
|
and ebx, not 15
|
|
add edx, COFF_SECTION_SIZE
|
|
dec ecx
|
|
jnz @B
|
|
mov [img_size], ebx
|
|
|
|
call init_heap
|
|
stdcall user_alloc, [img_size]
|
|
|
|
test eax, eax
|
|
jz .fail
|
|
mov [img_base], eax
|
|
|
|
mov edx, [coff]
|
|
movzx ebx, [edx+CFH.nSections]
|
|
mov edi, [img_base]
|
|
lea eax, [edx+20]
|
|
@@:
|
|
mov [eax+CFS.VirtualAddress], edi
|
|
mov esi, [eax+CFS.PtrRawData]
|
|
test esi, esi
|
|
jnz .copy
|
|
add edi, [eax+CFS.SizeOfRawData]
|
|
jmp .next
|
|
.copy:
|
|
add esi, edx
|
|
; add edi, new_app_base
|
|
mov ecx, [eax+CFS.SizeOfRawData]
|
|
cld
|
|
rep movsb
|
|
.next:
|
|
add edi, 15 ;-new_app_base
|
|
and edi, -16
|
|
add eax, COFF_SECTION_SIZE
|
|
dec ebx
|
|
jnz @B
|
|
|
|
mov ebx, [edx+CFH.pSymTable]
|
|
add ebx, edx
|
|
mov [sym], ebx
|
|
mov ecx, [edx+CFH.nSymbols]
|
|
add ecx,ecx
|
|
lea ecx,[ecx+ecx*8] ;ecx*=18 = nSymbols*CSYM_SIZE
|
|
add ecx, [sym]
|
|
mov [strings], ecx
|
|
|
|
lea eax, [edx+20]
|
|
|
|
stdcall fix_coff_symbols, eax, [sym], [edx+CFH.nSymbols],\
|
|
[strings], dword 0
|
|
test eax, eax
|
|
jnz @F
|
|
|
|
@@:
|
|
mov edx, [coff]
|
|
movzx ebx, [edx+CFH.nSections]
|
|
mov edi, new_app_base
|
|
lea eax, [edx+20]
|
|
@@:
|
|
add [eax+CFS.VirtualAddress], edi ;patch user space offset
|
|
add eax, COFF_SECTION_SIZE
|
|
dec ebx
|
|
jnz @B
|
|
|
|
add edx, 20
|
|
stdcall fix_coff_relocs, [coff], edx, [sym]
|
|
|
|
mov ebx, [coff]
|
|
stdcall get_coff_sym,[sym],[ebx+CFH.nSymbols],szEXPORTS
|
|
mov [exports], eax
|
|
|
|
stdcall kernel_free, [coff]
|
|
mov eax, [exports]
|
|
ret
|
|
.fail:
|
|
xor eax, eax
|
|
ret
|
|
endp
|
|
|
|
align 4
|
|
proc stop_all_services
|
|
|
|
mov edx, [srv.fd]
|
|
.next:
|
|
cmp edx, srv.fd-SRV_FD_OFFSET
|
|
je .done
|
|
cmp [edx+SRV.magic], ' SRV'
|
|
jne .next
|
|
cmp [edx+SRV.size], SRV_SIZE
|
|
jne .next
|
|
mov ebx, [edx+SRV.entry]
|
|
mov edx, [edx+SRV.fd]
|
|
push edx
|
|
stdcall ebx, dword -1
|
|
pop edx
|
|
jmp .next
|
|
.done:
|
|
ret
|
|
endp
|
|
|
|
; param
|
|
; eax= size
|
|
; ebx= pid
|
|
|
|
align 4
|
|
create_kernel_object:
|
|
|
|
push ebx
|
|
call malloc
|
|
pop ebx
|
|
test eax, eax
|
|
jz .fail
|
|
|
|
mov ecx,[current_slot]
|
|
add ecx, APP_OBJ_OFFSET
|
|
|
|
pushfd
|
|
cli
|
|
mov edx, [ecx+APPOBJ.fd]
|
|
mov [eax+APPOBJ.fd], edx
|
|
mov [eax+APPOBJ.bk], ecx
|
|
mov [eax+APPOBJ.pid], ebx
|
|
|
|
mov [ecx+APPOBJ.fd], eax
|
|
mov [edx+APPOBJ.bk], eax
|
|
popfd
|
|
.fail:
|
|
ret
|
|
|
|
; param
|
|
; eax= object
|
|
|
|
align 4
|
|
destroy_kernel_object:
|
|
|
|
pushfd
|
|
cli
|
|
mov ebx, [eax+APPOBJ.fd]
|
|
mov ecx, [eax+APPOBJ.bk]
|
|
mov [ebx+APPOBJ.bk], ecx
|
|
mov [ecx+APPOBJ.fd], ebx
|
|
popfd
|
|
|
|
xor edx, edx ;clear common header
|
|
mov [eax], edx
|
|
mov [eax+4], edx
|
|
mov [eax+8], edx
|
|
mov [eax+12], edx
|
|
mov [eax+16], edx
|
|
|
|
call free ;release object memory
|
|
ret
|
|
|
|
|
|
|
|
if 0
|
|
|
|
irq:
|
|
|
|
.irq0:
|
|
pusfd
|
|
pushad
|
|
push IRQ_0
|
|
jmp .master
|
|
.irq_1:
|
|
pusfd
|
|
pushad
|
|
push IRQ_1
|
|
jmp .master
|
|
|
|
.master:
|
|
mov ax, app_data
|
|
mov ds, eax
|
|
mov es, eax
|
|
mov ebx, [esp+4] ;IRQ_xx
|
|
mov eax, [irq_handlers+ebx+4]
|
|
call intr_handler
|
|
mov ecx, [esp+4]
|
|
cmp [irq_actids+ecx*4], 0
|
|
je @F
|
|
in al, 0x21
|
|
bts eax, ecx
|
|
out 0x21, al
|
|
mov al, 0x20
|
|
out 0x20, al
|
|
jmp .restart
|
|
|
|
.slave:
|
|
mov ax, app_data
|
|
mov ds, eax
|
|
mov es, eax
|
|
mov ebx, [esp+4] ;IRQ_xx
|
|
mov eax, [irq_handlers+ebx+4]
|
|
call intr_handler
|
|
mov ecx, [esp+4]
|
|
sub ecx, 8
|
|
cmp [irq_actids+ecx*4], 0
|
|
je @F
|
|
in al, 0xA1
|
|
bts eax, ecx
|
|
out 0xA1, al
|
|
mov al, 0x20
|
|
out 0xA0, al
|
|
out 0x20, al
|
|
.restart:
|
|
mov ebx, [next_slot]
|
|
test ebx, ebx
|
|
jz @F
|
|
mov [next_task],0
|
|
mov esi, [prev_slot]
|
|
call do_change_task
|
|
add esp, 4
|
|
iretd
|
|
|
|
end if
|
|
|
|
|
|
|
|
|