UefiBootServicesTableLib.c

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#include <Uefi.h>
 
#include <Library/UefiBootServicesTableLib.h>
#include <Library/DebugLib.h>
 
EFI_HANDLE         gImageHandle = NULL;
EFI_SYSTEM_TABLE   *gST         = NULL;
EFI_BOOT_SERVICES  *gBS         = NULL;
 
EFI_STATUS
EFIAPI
UefiBootServicesTableLibConstructor (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  )
{
  //
  // Cache the Image Handle
  //
  gImageHandle = ImageHandle;
  ASSERT (gImageHandle != NULL);
 
  //
  // Cache pointer to the EFI System Table
  //
  gST = SystemTable;
  ASSERT (gST != NULL);
 
  //
  // Cache pointer to the EFI Boot Services Table
  //
  gBS = SystemTable->BootServices;
  ASSERT (gBS != NULL);
 
  return EFI_SUCCESS;
}