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sys function 49

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git-svn-id: svn://kolibrios.org@1330 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Alexey Teplov (
2009-12-24 17:12:36 +00:00
parent e9e908d84d
commit 90bb6a20e2
2 changed files with 46 additions and 42 deletions
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84
kernel/trunk/kernel.asm
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@@ -5478,57 +5478,61 @@ set_screen:
hlt ; Houston, we've had a problem
; --------------- APM ---------------------
apm_entry dp 0
apm_vf dd 0
uglobal
apm_entry dp 0
apm_vf dd 0
endg
align 4
sys_apm:
cmp word [apm_vf], 0 ; Check APM BIOS enable
jne @f
or [esp + 48], byte 1 ; error
mov [esp + 36], dword 8 ; 32-bit protected-mode interface not supported
ret
xor eax,eax
cmp word [apm_vf], ax ; Check APM BIOS enable
jne @f
inc eax
or dword [esp + 44], eax ; error
add eax,7
mov dword [esp + 32], eax ; 32-bit protected-mode interface not supported
ret
@@:
xchg eax, ecx
xchg ebx, ecx
; xchg eax, ecx
; xchg ebx, ecx
cmp al, 3
ja @f
and [esp + 48], byte 0xfe ; emulate func 0..3 as func 0
mov eax, [apm_vf]
mov [esp + 36], eax
shr eax, 16
mov [esp + 32], eax
ret
cmp dx, 3
ja @f
and [esp + 44], byte 0xfe ; emulate func 0..3 as func 0
mov eax,[apm_vf]
mov [esp + 32], eax
shr eax, 16
mov [esp + 28], eax
ret
@@:
mov esi, [master_tab+(OS_BASE shr 20)]
xchg [master_tab], esi
push esi
mov edi, cr3
mov cr3, edi ;flush TLB
mov esi,[master_tab+(OS_BASE shr 20)]
xchg [master_tab], esi
push esi
mov edi, cr3
mov cr3, edi ;flush TLB
call pword [apm_entry] ; call APM BIOS
call pword [apm_entry] ;call APM BIOS
xchg eax, [esp]
mov [master_tab], eax
mov eax, cr3
mov cr3, eax
pop eax
xchg eax, [esp]
mov [master_tab], eax
mov eax, cr3
mov cr3, eax
pop eax
mov [esp + 8 ], edi
mov [esp + 12], esi
mov [esp + 24], ebx
mov [esp + 28], edx
mov [esp + 32], ecx
mov [esp + 36], eax
setc al
and [esp + 48], byte 0xfe
or [esp + 48], al
ret
mov [esp + 4 ], edi
mov [esp + 8], esi
mov [esp + 20], ebx
mov [esp + 24], edx
mov [esp + 28], ecx
mov [esp + 32], eax
setc al
and [esp + 44], byte 0xfe
or [esp + 44], al
ret
; -----------------------------------------
align 4