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optimization 46 and 64 sysfunc.

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git-svn-id: svn://kolibrios.org@1306 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Alexey Teplov (
2009-12-03 18:48:41 +00:00
parent dceaa5fee0
commit b1d15587ca
5 changed files with 160 additions and 154 deletions
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212
kernel/trunk/kernel.asm
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@@ -4015,193 +4015,173 @@ get_irq_data:
set_io_access_rights:
pushad
mov edi, tss._io_map_0
push edi eax
mov edi, tss._io_map_0
; mov ecx,eax
; and ecx,7 ; offset in byte
; shr eax,3 ; number of byte
; add edi,eax
; mov ebx,1
; shl ebx,cl
test ebp,ebp
; cmp ebp,0 ; enable access - ebp = 0
jnz siar1
; not ebx
; and [edi],byte bl
btr [edi], eax
popad
pop eax edi
ret
siar1:
bts [edi], eax
; or [edi],byte bl ; disable access - ebp = 1
popad
pop eax edi
ret
;reserve/free group of ports
; * eax = 46 - number function
; * ebx = 0 - reserve, 1 - free
; * ecx = number start arrea of ports
; * edx = number end arrea of ports (include last number of port)
;Return value:
; * eax = 0 - succesful
; * eax = 1 - error
; * The system has reserve this ports:
; 0..0x2d, 0x30..0x4d, 0x50..0xdf, 0xe5..0xff (include last number of port).
;destroys eax,ebx, ebp
r_f_port_area:
test eax, eax
test ebx, ebx
jnz free_port_area
; je r_port_area
; jmp free_port_area
; r_port_area:
pushad
; pushad
cmp ebx,ecx ; beginning > end ?
cmp ecx,edx ; beginning > end ?
ja rpal1
cmp ecx,65536
cmp edx,65536
jae rpal1
mov esi,[RESERVED_PORTS]
test esi,esi ; no reserved areas ?
mov eax,[RESERVED_PORTS]
test eax,eax ; no reserved areas ?
je rpal2
cmp esi,255 ; max reserved
cmp eax,255 ; max reserved
jae rpal1
rpal3:
mov edi,esi
shl edi,4
add edi,RESERVED_PORTS
cmp ebx,[edi+8]
mov ebx,eax
shl ebx,4
add ebx,RESERVED_PORTS
cmp ecx,[ebx+8]
ja rpal4
cmp ecx,[edi+4]
cmp edx,[ebx+4]
jae rpal1
; jb rpal4
; jmp rpal1
rpal4:
dec esi
dec eax
jnz rpal3
jmp rpal2
rpal1:
popad
mov eax,1
; popad
; mov eax,1
xor eax,eax
inc eax
ret
rpal2:
popad
; popad
; enable port access at port IO map
cli
pushad ; start enable io map
cmp ecx,65536 ;16384
jae no_unmask_io ; jge
mov eax,ebx
new_port_access:
pushad
xor ebp,ebp ; enable - eax = port
call set_io_access_rights
popad
cli
pushad ; start enable io map
cmp edx,65536 ;16384
jae no_unmask_io ; jge
mov eax,ecx
; push ebp
xor ebp,ebp ; enable - eax = port
new_port_access:
; pushad
call set_io_access_rights
; popad
inc eax
cmp eax,ecx
cmp eax,edx
jbe new_port_access
no_unmask_io:
popad ; end enable io map
; pop ebp
no_unmask_io:
popad ; end enable io map
sti
mov edi,[RESERVED_PORTS]
add edi,1
mov [RESERVED_PORTS],edi
shl edi,4
add edi,RESERVED_PORTS
mov esi,[TASK_BASE]
mov esi,[esi+TASKDATA.pid]
mov [edi],esi
mov [edi+4],ebx
mov [edi+8],ecx
mov eax,[RESERVED_PORTS]
add eax,1
mov [RESERVED_PORTS],eax
shl eax,4
add eax,RESERVED_PORTS
mov ebx,[TASK_BASE]
mov ebx,[ebx+TASKDATA.pid]
mov [eax],ebx
mov [eax+4],ecx
mov [eax+8],edx
xor eax, eax
ret
free_port_area:
pushad
mov esi,[RESERVED_PORTS] ; no reserved areas ?
test esi,esi
je frpal2
mov edx,[TASK_BASE]
mov edx,[edx+TASKDATA.pid]
; pushad
mov eax,[RESERVED_PORTS] ; no reserved areas ?
test eax,eax
jz frpal2
mov ebx,[TASK_BASE]
mov ebx,[ebx+TASKDATA.pid]
frpal3:
mov edi,esi
mov edi,eax
shl edi,4
add edi,RESERVED_PORTS
cmp edx,[edi]
cmp ebx,[edi]
jne frpal4
cmp ebx,[edi+4]
cmp ecx,[edi+4]
jne frpal4
cmp ecx,[edi+8]
cmp edx,[edi+8]
jne frpal4
jmp frpal1
frpal4:
dec esi
dec eax
jnz frpal3
frpal2:
popad
mov eax,1
; popad
inc eax
ret
frpal1:
mov ecx,256
sub ecx,esi
shl ecx,4
mov esi,edi
add esi,16
cld
rep movsb
push ecx
mov ecx,256
sub ecx,eax
shl ecx,4
mov esi,edi
add esi,16
cld
rep movsb
dec dword [RESERVED_PORTS]
dec dword [RESERVED_PORTS]
;popad
;disable port access at port IO map
popad
; disable port access at port IO map
pushad ; start disable io map
cmp ecx,65536 ;16384
; pushad ; start disable io map
pop eax ;start port
cmp edx,65536 ;16384
jge no_mask_io
mov eax,ebx
new_port_access_disable:
pushad
mov ebp,1 ; disable - eax = port
; mov eax,ecx
xor ebp,ebp
inc ebp
new_port_access_disable:
; pushad
; mov ebp,1 ; disable - eax = port
call set_io_access_rights
popad
; popad
inc eax
cmp eax,ecx
cmp eax,edx
jbe new_port_access_disable
no_mask_io:
popad ; end disable io map
no_mask_io:
; popad ; end disable io map
xor eax, eax
ret
@@ -5381,7 +5361,7 @@ align 4
syscall_reserveportarea: ; ReservePortArea and FreePortArea
call r_f_port_area
mov [esp+36],eax
mov [esp+32],eax
ret
align 4