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