InternalSwitchStack.c

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#include "BaseLibInternals.h"
 
UINTN
EFIAPI
InternalSwitchStackAsm (
  IN     BASE_LIBRARY_JUMP_BUFFER  *JumpBuffer
  );
 
VOID
EFIAPI
InternalSwitchStack (
  IN      SWITCH_STACK_ENTRY_POINT  EntryPoint,
  IN      VOID                      *Context1   OPTIONAL,
  IN      VOID                      *Context2   OPTIONAL,
  IN      VOID                      *NewStack,
  IN      VA_LIST                   Marker
  )
 
{
  BASE_LIBRARY_JUMP_BUFFER  JumpBuffer;
 
  JumpBuffer.RA                      = (UINTN)EntryPoint;
  JumpBuffer.SP                      = (UINTN)NewStack - sizeof (VOID *);
  JumpBuffer.SP                     -= sizeof (Context1) + sizeof (Context2);
  ((VOID **)(UINTN)JumpBuffer.SP)[0] = Context1;
  ((VOID **)(UINTN)JumpBuffer.SP)[1] = Context2;
 
  InternalSwitchStackAsm (&JumpBuffer);
}