UefiCpuPkg/CpuExceptionHandlerLib: Add stack switch support

[mirror_edk2.git] / UefiCpuPkg / Library / CpuExceptionHandlerLib / PeiCpuException.c

diff --git a/UefiCpuPkg/Library/CpuExceptionHandlerLib/PeiCpuException.c b/UefiCpuPkg/Library/CpuExceptionHandlerLib/PeiCpuException.c
index 8d8d16ecbd7e3f817bd0576b83b8ee8d6c1fe75a..6f271983f2d27d4842368674b57e8c9dfe6b6690 100644 (file)
--- a/UefiCpuPkg/Library/CpuExceptionHandlerLib/PeiCpuException.c
+++ b/UefiCpuPkg/Library/CpuExceptionHandlerLib/PeiCpuException.c
@@ -177,4 +177,36 @@ RegisterCpuInterruptHandler (
   )\r
 {\r
   return EFI_UNSUPPORTED;\r
-}
\ No newline at end of file
+}\r
+\r
+/**\r
+  Initializes all CPU exceptions entries with optional extra initializations.\r
+\r
+  By default, this method should include all functionalities implemented by\r
+  InitializeCpuExceptionHandlers(), plus extra initialization works, if any.\r
+  This could be done by calling InitializeCpuExceptionHandlers() directly\r
+  in this method besides the extra works.\r
+\r
+  InitData is optional and its use and content are processor arch dependent.\r
+  The typical usage of it is to convey resources which have to be reserved\r
+  elsewhere and are necessary for the extra initializations of exception.\r
+\r
+  @param[in]  VectorInfo    Pointer to reserved vector list.\r
+  @param[in]  InitData      Pointer to data optional for extra initializations\r
+                            of exception.\r
+\r
+  @retval EFI_SUCCESS             The exceptions have been successfully\r
+                                  initialized.\r
+  @retval EFI_INVALID_PARAMETER   VectorInfo or InitData contains invalid\r
+                                  content.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+InitializeCpuExceptionHandlersEx (\r
+  IN EFI_VECTOR_HANDOFF_INFO            *VectorInfo OPTIONAL,\r
+  IN CPU_EXCEPTION_INIT_DATA            *InitData OPTIONAL\r
+  )\r
+{\r
+  return InitializeCpuExceptionHandlers (VectorInfo);\r
+}\r