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b6f5520bee
[ROSLOAD]: Implement OslExecuteTransition, OslArchKernelSetup, ArchRestoreProcessorFeatures, OslArchTransferToKernel. [ROSLOAD]: Factor out the logo code. Clean ups.
56 lines
1.2 KiB
ArmAsm
56 lines
1.2 KiB
ArmAsm
/*
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* COPYRIGHT: See COPYING.ARM in the top level directory
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* PROJECT: ReactOS UEFI OS Loader
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* FILE: boot/environ/i386/osxfera.asm
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* PURPOSE: OS Loader i386 Transfer Functions
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* PROGRAMMER: Alex Ionescu (alex.ionescu@reactos.org)
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*/
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/* INCLUDES ******************************************************************/
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#include <asm.inc>
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#include <ks386.inc>
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EXTERN _OslKernelGdt:FWORD
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EXTERN _OslKernelIdt:FWORD
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/* FUNCTIONS ****************************************************************/
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.code
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ASSUME nothing
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PUBLIC _OslArchTransferToKernel
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_OslArchTransferToKernel:
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/* Load new GDT and IDT */
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lgdt _OslKernelGdt+2
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lidt _OslKernelIdt+2
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/* Set the Ring 0 DS/ES/SS Segment */
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mov ax, KGDT_R0_DATA
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mov ds, ax
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mov es, ax
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mov ss, ax
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mov gs, ax
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/* Get the Ring 0 TSS */
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mov ax, KGDT_TSS
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ltr ax
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/* Save loader block and entrypoint */
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mov ecx, [esp+4]
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mov eax, [esp+8]
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/* Create initial interrupt frame */
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xor edx, edx
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push ecx
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push edx
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push KGDT_R0_CODE
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push eax
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/* Jump to KGDT_R0_CODE:[EAX] */
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retf
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/* We should never make it here */
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ret 8
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END
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