| 0,0 → 1,101 |
|---|
| /*++ |
| |
| Copyright (c) 1998 Intel Corporation |
| |
| Module Name: |
| |
| vm.c |
| |
| Abstract: |
| |
| EFI Hell to remap runtime address into the new virual address space |
| that was registered by the OS for RT calls. |
| |
| So the code image needs to be relocated. All pointers need to be |
| manually fixed up since the address map changes. |
| |
| GOOD LUCK NOT HAVING BUGS IN YOUR CODE! PLEASE TEST A LOT. MAKE SURE |
| EXIT BOOTSERVICES OVER WRITES ALL BOOTSERVICE MEMORY & DATA SPACES WHEN |
| YOU TEST. |
| |
| Revision History |
| |
| --*/ |
| |
| #include "lib.h" |
| |
| #pragma RUNTIME_CODE(RtLibEnableVirtualMappings) |
| VOID |
| RUNTIMEFUNCTION |
| RtLibEnableVirtualMappings ( |
| VOID |
| ) |
| { |
| EFI_CONVERT_POINTER ConvertPointer; |
| |
| // |
| // If this copy of the lib is linked into the firmware, then |
| // do not update the pointers yet. |
| // |
| |
| if (!LibFwInstance) { |
| |
| // |
| // Different components are updating to the new virtual |
| // mappings at differnt times. The only function that |
| // is safe to call at this notification is ConvertAddress |
| // |
| |
| ConvertPointer = RT->ConvertPointer; |
| |
| // |
| // Fix any pointers that the lib created, that may be needed |
| // during runtime. |
| // |
| |
| ConvertPointer (EFI_INTERNAL_PTR, (VOID **)&RT); |
| ConvertPointer (EFI_OPTIONAL_PTR, (VOID **)&LibRuntimeDebugOut); |
| |
| ConvertPointer (EFI_INTERNAL_PTR, (VOID **)&LibRuntimeRaiseTPL); |
| ConvertPointer (EFI_INTERNAL_PTR, (VOID **)&LibRuntimeRestoreTPL); |
| |
| // that was it :^) |
| } |
| } |
| |
| |
| #pragma RUNTIME_CODE(RtConvertList) |
| VOID |
| RUNTIMEFUNCTION |
| RtConvertList ( |
| IN UINTN DebugDisposition, |
| IN OUT LIST_ENTRY *ListHead |
| ) |
| { |
| LIST_ENTRY *Link; |
| LIST_ENTRY *NextLink; |
| EFI_CONVERT_POINTER ConvertPointer; |
| |
| ConvertPointer = RT->ConvertPointer; |
| |
| // |
| // Convert all the Flink & Blink pointers in the list |
| // |
| |
| Link = ListHead; |
| do { |
| NextLink = Link->Flink; |
| |
| ConvertPointer ( |
| Link->Flink == ListHead ? DebugDisposition : 0, |
| (VOID **)&Link->Flink |
| ); |
| |
| ConvertPointer ( |
| Link->Blink == ListHead ? DebugDisposition : 0, |
| (VOID **)&Link->Blink |
| ); |
| |
| Link = NextLink; |
| } while (Link != ListHead); |
| } |