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cdecl16 update for EnterUnrealMode

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This commit is contained in:
Elaina Claus
2024-10-03 17:59:29 -04:00
parent 269e90a122
commit 09366afbdf
1 changed files with 5 additions and 6 deletions
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11
src/stage2/stage2.nasm
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@@ -94,8 +94,6 @@ main:
call PrintString call PrintString
add sp, 0x2 add sp, 0x2
ERROR STEVIA_DEBUG_HALT
; enter unreal mode ; enter unreal mode
call EnterUnrealMode call EnterUnrealMode
@@ -104,6 +102,7 @@ main:
call PrintString call PrintString
add sp, 0x2 add sp, 0x2
ERROR STEVIA_DEBUG_HALT
; FAT Driver setup ; FAT Driver setup
push bp push bp
@@ -853,10 +852,10 @@ EnableA20:
; TODO: fix the prolog, epilog and stack usage to confirm with cdecl16 ; TODO: fix the prolog, epilog and stack usage to confirm with cdecl16
EnterUnrealMode: EnterUnrealMode:
__CDECL16_ENTRY
.func:
cli ; no interrupts cli ; no interrupts
push ds ; save real mode push ds ; save real mode data selector
push bx
lgdt [unreal_gdt_info] lgdt [unreal_gdt_info]
mov eax, cr0 ; switch to pmode mov eax, cr0 ; switch to pmode
@@ -871,10 +870,10 @@ EnterUnrealMode:
and al,0xFE ; back to realmode and al,0xFE ; back to realmode
mov cr0, eax ; by toggling bit again mov cr0, eax ; by toggling bit again
pop bx
pop ds ; get back old segment pop ds ; get back old segment
sti sti
.endp: .endp:
__CDECL16_EXIT
ret ret
; ############# ; #############