;
; This file is part of the Infinity sound AC97 driver.
; (C) copyright Serge 2006
; email: infinity_sound@mail.ru
;
; This program is free software; you can redistribute it and/or modify
; it under the terms of the GNU General Public License as published by
; the Free Software Foundation; either version 2 of the License, or
; (at your option) any later version.
;
; This program is distributed in the hope that it will be useful,
; but WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
; GNU General Public License for more details.
align 4
proc attach_int_handler stdcall, irq:dword, handler:dword
mov ebx, [irq] ;irq num
test ebx, ebx
jz .err
mov eax, [handler]
test eax, eax
jz .err
mov [irq_tab+ebx*4], eax
stdcall enable_irq, [irq]
ret
.err:
xor eax, eax
ret
endp
align 4
proc detach_int_handler
ret
endp
align 4
proc enable_irq stdcall, irq_line:dword
mov ebx, [irq_line]
mov edx, 0x21
cmp ebx, 8
jb @F
mov edx, 0xA1
sub ebx,8
@@:
in al,dx
btr eax, ebx
out dx, al
ret
endp
align 16
;; proc irq_serv
irq_serv:
.irq_1:
push eax
mov eax, 1
jmp .main
align 4
.irq_2:
push eax
mov eax, 2
jmp .main
align 4
.irq_3:
push eax
mov eax, 3
jmp .main
align 4
.irq_4:
push eax
mov eax, 4
jmp .main
align 4
.irq_5:
push eax
mov eax, 5
jmp .main
align 4
.irq_6:
push eax
mov eax, 6
jmp .main
align 4
.irq_7:
push eax
mov eax, 7
jmp .main
align 4
.irq_8:
push eax
mov eax, 8
jmp .main
align 4
.irq_9:
push eax
mov eax, 9
jmp .main
align 4
.irq_10:
push eax
mov eax, 10
jmp .main
align 4
.irq_11:
push eax
mov eax, 11
jmp .main
align 4
.irq_12:
push eax
mov eax, 12
jmp .main
align 4
.irq_13:
push eax
mov eax, 13
jmp .main
align 4
.irq_14:
push eax
mov eax, 14
jmp .main
align 4
.irq_15:
push eax
mov eax, 15
jmp .main
align 16
.main:
save_ring3_context
mov bx, os_data
mov ds, bx
mov es, bx
mov ebx, [irq_tab+eax*4]
test ebx, ebx
jz .exit
call ebx
.exit:
restore_ring3_context
cmp eax, 8
mov al, 0x20
jb @f
out 0xa0, al
@@:
out 0x20, al
pop eax
iret
align 4
proc get_notify stdcall, p_ev:dword
.wait:
mov ebx,[CURRENT_TASK]
shl ebx,8
test dword [ebx+PROC_BASE+0xA8],EVENT_NOTIFY
jz @f
and dword [ebx+PROC_BASE+0xA8], not EVENT_NOTIFY
mov edi, [p_ev]
mov dword [edi], EV_INTR
mov eax, [ebx+PROC_BASE+APPDATA.event]
mov dword [edi+4], eax
ret
@@:
call change_task
jmp .wait
endp
align 4
proc pci_read32 stdcall, bus:dword, devfn:dword, reg:dword
xor eax, eax
xor ebx, ebx
mov ah, byte [bus]
mov al, 6
mov bh, byte [devfn]
mov bl, byte [reg]
call pci_read_reg
ret
endp
align 4
proc pci_read8 stdcall, bus:dword, devfn:dword, reg:dword
xor eax, eax
xor ebx, ebx
mov ah, byte [bus]
mov al, 4
mov bh, byte [devfn]
mov bl, byte [reg]
call pci_read_reg
ret
endp
align 4
proc pci_write8 stdcall, bus:dword, devfn:dword, reg:dword, val:dword
xor eax, eax
xor ebx, ebx
mov ah, byte [bus]
mov al, 8
mov bh, byte [devfn]
mov bl, byte [reg]
mov ecx, [val]
call pci_write_reg
ret
endp
handle equ IOCTL.handle
io_code equ IOCTL.io_code
input equ IOCTL.input
inp_size equ IOCTL.inp_size
output equ IOCTL.output
out_size equ IOCTL.out_size
align 4
proc srv_handler stdcall, ioctl:dword
mov esi, [ioctl]
test esi, esi
jz .err
mov edi, [esi+handle]
cmp [edi+SRV.magic], ' SRV'
jne .fail
cmp [edi+SRV.size], SRV_SIZE
jne .fail
stdcall [edi+SRV.srv_proc], esi
ret
.fail:
xor eax, eax
not eax
mov [esi+output], eax
mov [esi+out_size], 4
ret
.err:
xor eax, eax
not eax
ret
endp
align 4
proc srv_handlerEx stdcall, ioctl:dword
mov esi, [ioctl]
test esi, esi
jz .err
add esi, new_app_base
mov edi, [esi+handle]
cmp [edi+SRV.magic], ' SRV'
jne .fail
cmp [edi+SRV.size], SRV_SIZE
jne .fail
add [esi+input], new_app_base
add [esi+output], new_app_base
stdcall [edi+SRV.srv_proc], esi
ret
.fail:
xor eax, eax
not eax
mov [esi+output], eax
mov [esi+out_size], 4
ret
.err:
xor eax, eax
not eax
ret
endp
restore handle
restore io_code
restore input
restore inp_size
restore output
restore out_size
align 4
proc get_service stdcall, sz_name:dword
locals
srv_ptr dd ?
counter dd ?
endl
mov eax, [sz_name]
test eax, eax
jnz @F
ret
@@:
mov [srv_ptr], srv_tab
mov [counter], 16
@@:
stdcall strncmp, [srv_ptr], [sz_name], 16
test eax, eax
je .ok
add [srv_ptr], SRV_SIZE
dec [counter]
jnz @B
.not_load:
stdcall find_service, [sz_name]
test eax, eax
jnz @F
ret
@@:
stdcall load_driver, eax
ret
.ok:
mov eax, [srv_ptr]
ret
endp
align 4
proc find_service stdcall ,sz_name:dword
mov eax, [sz_name]
test eax, eax
jz .fail
mov esi, services
@@:
mov eax, [esi]
test eax, eax
jz .fail
push esi
stdcall strncmp, eax, [sz_name], 16
pop esi
test eax, eax
je .ok
add esi, 8
jmp @B
.ok:
mov eax, [esi+4]
ret
.fail:
xor eax, eax
ret
endp
align 4
proc reg_service stdcall, sz_name:dword, handler:dword
locals
srv dd ?
endl
mov eax, [sz_name]
test eax, eax
jz .fail
mov ebx, [handler]
test ebx, ebx
jz .fail
call alloc_service
test eax, eax
jz .fail
mov [srv], eax
mov edi, eax
mov esi, [sz_name]
mov ecx, 16
rep movsb
mov edi, eax
mov [edi+SRV.magic], ' SRV'
mov [edi+SRV.size], SRV_SIZE
mov ebx, [handler]
mov [edi+SRV.srv_proc], ebx
mov eax, [srv]
ret
.fail:
xor eax, eax
ret
endp
align 4
proc get_proc stdcall, exp:dword, sz_name:dword
mov edx, [exp]
.next:
mov eax, [edx]
test eax, eax
jz .end
push edx
stdcall strncmp, eax, [sz_name], 16
pop edx
test eax, eax
jz .ok
add edx,8
jmp .next
.ok:
mov eax, [edx+4]
.end:
ret
endp
align 4
proc get_coff_sym stdcall, pSym:dword,count:dword, sz_sym:dword
@@:
stdcall strncmp, [pSym], [sz_sym], 8
test eax,eax
jz .ok
add [pSym], 18
dec [count]
jnz @b
xor eax, eax
ret
.ok:
mov ebx, [pSym]
mov eax, [ebx+8]
ret
endp
align 4
proc get_curr_task
mov eax,[CURRENT_TASK]
shl eax, 8
ret
endp
align 4
proc get_fileinfo stdcall, file_name:dword, info:dword
locals
cmd dd ?
offset dd ?
dd ?
count dd ?
buff dd ?
db ?
name dd ?
endl
xor eax, eax
mov ebx, [file_name]
sub ebx, new_app_base
mov ecx, [info]
sub ecx, new_app_base
mov [cmd], 5
mov [offset], eax
mov [offset+4], eax
mov [count], eax
mov [buff], ecx
mov byte [buff+4], al
mov [name], ebx
mov eax, 70
lea ebx, [cmd]
sub ebx, new_app_base
int 0x40
ret
endp
align 4
proc read_file stdcall,file_name:dword, buffer:dword, off:dword,\
bytes:dword
locals
cmd dd ?
offset dd ?
dd ?
count dd ?
buff dd ?
db ?
name dd ?
endl
xor eax, eax
mov ebx, [file_name]
mov ecx, [off]
mov edx, [bytes]
mov esi, [buffer]
sub ebx, new_app_base
sub esi, new_app_base
mov [cmd], eax
mov [offset], ecx
mov [offset+4], eax
mov [count], edx
mov [buff], esi
mov byte [buff+4], al
mov [name], ebx
mov eax, 70
lea ebx, [cmd]
sub ebx, new_app_base
int 0x40
ret
endp
align 4
proc load_file stdcall, file_name:dword
locals
attr dd ?
flags dd ?
cr_time dd ?
cr_date dd ?
acc_time dd ?
acc_date dd ?
mod_time dd ?
mod_date dd ?
file_size dd ?
file dd ?
endl
lea eax, [attr]
stdcall get_fileinfo, [file_name], eax
test eax, eax
jnz .fail
stdcall kernel_alloc, [file_size]
mov [file], eax
stdcall read_file, [file_name], eax, dword 0, [file_size]
cmp ebx, [file_size]
jne .cleanup
mov eax, [file]
ret
.cleanup:
stdcall kernel_free, [file]
.fail:
xor eax, eax
ret
endp
align 4
proc get_proc_ex stdcall, proc_name:dword, imports:dword
.look_up:
mov edx, [imports]
mov edx, [edx]
test edx, edx
jz .end
.next:
mov eax, [edx]
test eax, eax
jz .next_table
push edx
stdcall strncmp, eax, [proc_name], 16
pop edx
test eax, eax
jz .ok
add edx,8
jmp .next
.next_table:
add [imports], 4
jmp .look_up
.ok:
mov eax, [edx+4]
ret
.end:
xor eax, eax
ret
endp
align 4
proc fix_coff_symbols stdcall, sec:dword, symbols:dword,\
sym_count:dword, strings:dword, imports:dword
locals
retval dd ?
endl
mov edi, [symbols]
mov [retval], 1
.fix:
movzx ebx, [edi+CSYM.SectionNumber]
test ebx, ebx
jnz .internal
mov eax, dword [edi+CSYM.Name]
test eax, eax
jnz @F
mov edi, [edi+4]
add edi, [strings]
@@:
push edi
stdcall get_proc_ex, edi,[imports]
pop edi
xor ebx, ebx
test eax, eax
jnz @F
mov esi, msg_unresolved
call sys_msg_board_str
mov esi, edi
call sys_msg_board_str
mov esi, msg_CR
call sys_msg_board_str
mov [retval],0
@@:
mov edi, [symbols]
mov [edi+CSYM.Value], eax
jmp .next
.internal:
dec ebx
shl ebx, 3
lea ebx, [ebx+ebx*4]
add ebx, [sec]
mov eax, [ebx+CFS.VirtualAddress]
add [edi+CSYM.Value], eax
.next:
add edi, CSYM_SIZE
mov [symbols], edi
dec [sym_count]
jnz .fix
mov eax, [retval]
ret
endp
align 4
proc fix_coff_relocs stdcall, coff:dword, sec:dword, sym:dword
locals
n_sec dd ?
endl
mov eax, [coff]
movzx ebx, [eax+CFH.nSections]
mov [n_sec], ebx
.fix_sec:
mov esi, [sec]
mov edi, [esi+CFS.PtrReloc]
add edi, [coff]
movzx ecx, [esi+CFS.NumReloc]
test ecx, ecx
jz .next
.next_reloc:
mov ebx, [edi+CRELOC.SymIndex]
add ebx,ebx
lea ebx,[ebx+ebx*8]
add ebx, [sym]
mov edx, [ebx+CSYM.Value]
cmp [edi+CRELOC.Type], 6
je .dir_32
cmp [edi+CRELOC.Type], 20
jne .next_reloc
.rel_32:
mov eax, [edi+CRELOC.VirtualAddress]
add eax, [esi+CFS.VirtualAddress]
sub edx, eax
sub edx, 4
jmp .fix
.dir_32:
mov eax, [edi+CRELOC.VirtualAddress]
add eax, [esi+CFS.VirtualAddress]
.fix:
add [eax], edx
add edi, 10
dec ecx
jnz .next_reloc
.next:
add [sec], 40
dec [n_sec]
jnz .fix_sec
.exit:
ret
endp
align 4
proc load_driver stdcall, file_name:dword
locals
coff dd ?
sym dd ?
strings dd ?
img_size dd ?
img_base dd ?
start dd ?
exports dd ? ;fake exports table
dd ?
endl
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, 18
dec ecx
jnz @B
mov [img_size], ebx
stdcall kernel_alloc, ebx
test eax, eax
jz .fail
mov [img_base], eax
mov edi, eax
xor eax, eax
mov ecx, [img_size]
add ecx, 4095
and ecx, not 4095
shr ecx, 2
cld
rep stosd
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
mov ecx, [eax+CFS.SizeOfRawData]
cld
rep movsb
.next:
add edi, 15
and edi, not 15
add eax, 40
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 ebx, [exports]
mov dword [ebx], kernel_export
mov dword [ebx+4], 0
lea eax, [edx+20]
stdcall fix_coff_symbols, eax, [sym], [edx+CFH.nSymbols],\
[strings], ebx
test eax, eax
jnz @F
mov esi, msg_module
call sys_msg_board_str
mov esi, [file_name]
call sys_msg_board_str
mov esi, msg_CR
call sys_msg_board_str
stdcall kernel_free,[coff]
xor eax, eax
ret
@@:
mov ebx, [coff]
add ebx, 20
stdcall fix_coff_relocs, [coff], ebx, [sym]
mov ebx, [coff]
stdcall get_coff_sym,[sym],[ebx+CFH.nSymbols],szSTART
mov [start], eax
stdcall kernel_free, [coff]
mov ebx, [start]
call ebx
test eax, eax
jnz .ok
stdcall kernel_free, [img_base]
xor eax, eax
ret
.ok:
mov ebx, [img_base]
mov [eax+SRV.base], ebx
ret
.fail:
xor eax, eax
ret
endp
drv_sound db '/rd/1/unisound.obj', 0
drv_infinity db '/rd/1/infinity.obj', 0
szSound db 'SOUND',0
szInfinity db 'INFINITY',0
szSTART db 'START',0
szEXPORTS db 'EXPORTS',0
szIMPORTS db 'IMPORTS',0
msg_unresolved db 'unresolved ',0
msg_module db 'in module ',0
msg_CR db 13,10,0
align 16
services:
dd szSound, drv_sound
dd szInfinity, drv_infinity
dd 0