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50 lines
1.1 KiB
C
50 lines
1.1 KiB
C
/**
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Some assembler helper functions plus boot.efi kernel jump callback
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by dmazar
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**/
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#ifndef APTIOFIX_ASM_FUNCS_H
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#define APTIOFIX_ASM_FUNCS_H
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#include <Library/BaseLib.h>
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/** Save 64 bit state that will be restored on callback. */
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VOID
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EFIAPI
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AsmPrepareJumpFromKernel (
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VOID
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);
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/** Start and end address of the 32 and 64 bit code
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that is copied to kernel entry address to jump back
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to our code, to AsmJumpFromKernel().
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*/
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extern UINT8 EntryPatchCode;
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extern UINT8 EntryPatchCodeEnd;
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/** Callback function, 32 and 64 bit, that is called when boot.efi jumps to kernel address. */
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VOID
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EFIAPI
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AsmJumpFromKernel (
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VOID
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);
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/** 32 bit function start and end that copies kernel to proper mem and jumps to kernel. */
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extern UINT8 JumpToKernel;
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extern UINT8 JumpToKernel32;
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extern UINT8 JumpToKernel64;
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extern UINT8 JumpToKernelEnd;
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extern UINTN SavedCR3;
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extern IA32_DESCRIPTOR SavedGDTR;
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extern IA32_DESCRIPTOR SavedIDTR;
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extern UINT64 AsmKernelEntry;
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extern UINT64 JumpToKernel32Addr;
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extern UINT64 JumpToKernel64Addr;
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#endif // APTIOFIX_ASM_FUNCS_H
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