OcLegacyThunkLib.h

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#ifndef OC_LEGACY_THUNK_LIB_H
#define OC_LEGACY_THUNK_LIB_H
 
#include <Protocol/Legacy8259.h>
 
//
// Legacy region base is 0x0C0000.
//
#define LEGACY_REGION_BASE  0x0C0000
#define LEGACY_REGION_SIZE  0x10000
 
#define EFI_SEGMENT(_Adr)  (UINT16) ((UINT16) (((UINTN) (_Adr)) >> 4) & 0xf000)
#define EFI_OFFSET(_Adr)   (UINT16) (((UINT16) ((UINTN) (_Adr))) & 0xffff)
 
EFI_STATUS
OcLegacyThunkInitializeBiosIntCaller (
  IN OUT THUNK_CONTEXT  *ThunkContext
  );
 
EFI_STATUS
OcLegacyThunkInitializeInterruptRedirection (
  IN EFI_LEGACY_8259_PROTOCOL  *Legacy8259
  );
 
VOID
OcLegacyThunkDisconnectEfiGraphics (
  VOID
  );
 
BOOLEAN
EFIAPI
OcLegacyThunkBiosInt86 (
  IN  THUNK_CONTEXT             *ThunkContext,
  IN  EFI_LEGACY_8259_PROTOCOL  *Legacy8259,
  IN  UINT8                     BiosInt,
  IN  IA32_REGISTER_SET         *Regs
  );
 
BOOLEAN
EFIAPI
OcLegacyThunkFarCall86 (
  IN  THUNK_CONTEXT             *ThunkContext,
  IN  EFI_LEGACY_8259_PROTOCOL  *Legacy8259,
  IN  UINT16                    Segment,
  IN  UINT16                    Offset,
  IN  IA32_REGISTER_SET         *Regs,
  IN  VOID                      *Stack,
  IN  UINTN                     StackSize
  );
 
#endif // OC_LEGACY_THUNK_LIB_H