mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-17 15:18:06 +01:00
44 lines
1.3 KiB
C
44 lines
1.3 KiB
C
/**
|
|
|
|
Some assembler helper functions plus boot.efi kernel jump callback
|
|
|
|
by dmazar
|
|
|
|
**/
|
|
|
|
#include <Library/BaseLib.h>
|
|
|
|
/** Read stack pointer. */
|
|
UINT64 EFIAPI MyAsmReadSp(VOID);
|
|
|
|
/** Save 64 bit state that will be restored on callback. */
|
|
VOID EFIAPI MyAsmPrepareJumpFromKernel(VOID);
|
|
|
|
/** Start and end address of the 32 and 64 bit code
|
|
that is copied to kernel entry address to jump back
|
|
to our code, to MyAsmJumpFromKernel().
|
|
*/
|
|
extern UINT8 MyAsmEntryPatchCode;
|
|
extern UINT8 MyAsmEntryPatchCodeEnd;
|
|
|
|
/** Callback function, 32 and 64 bit, that is called when boot.efi jumps to kernel address. */
|
|
VOID EFIAPI MyAsmJumpFromKernel(VOID);
|
|
|
|
/** 32 bit function start and end that copies kernel to proper mem and jumps to kernel. */
|
|
extern UINT8 MyAsmCopyAndJumpToKernel;
|
|
extern UINT8 MyAsmCopyAndJumpToKernel32;
|
|
extern UINT8 MyAsmCopyAndJumpToKernel64;
|
|
extern UINT8 MyAsmCopyAndJumpToKernelEnd;
|
|
|
|
extern UINTN SavedCR3;
|
|
extern IA32_DESCRIPTOR SavedGDTR;
|
|
extern IA32_DESCRIPTOR SavedIDTR;
|
|
|
|
extern UINT64 AsmKernelEntry;
|
|
extern UINT64 AsmKernelImageStartReloc;
|
|
extern UINT64 AsmKernelImageStart;
|
|
extern UINT64 AsmKernelImageSize;
|
|
|
|
extern UINT64 MyAsmCopyAndJumpToKernel32Addr;
|
|
extern UINT64 MyAsmCopyAndJumpToKernel64Addr;
|