MdePkg: remove redundant handling of EFI_IMAGE_REL_BASED_DIR64 relocations

There is AARCH64 specific code in the PE/COFF loader to handle relocations
of type EFI_IMAGE_REL_BASED_DIR64 which is dead code since this type is
handled by generic code and never handed to the AARCH64 specific routine.
So remove it.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18556 6f19259b-4bc3-4df7-8a09-765794883524

MdePkg/Library/BasePeCoffLib/AArch64/PeCoffLoaderEx.c

@@ -1,127 +0,0 @@
-/** @file
-  Specific relocation fixups for ARM architecture.
-
-  Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
-  Portions copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>
-  Portions copyright (c) 2011 - 2013, ARM Ltd. All rights reserved.<BR>
-
-  This program and the accompanying materials
-  are licensed and made available under the terms and conditions of the BSD License
-  which accompanies this distribution.  The full text of the license may be found at
-  http://opensource.org/licenses/bsd-license.php.
-
-  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-
-#include "BasePeCoffLibInternals.h"
-#include <Library/BaseLib.h>
-
-// Note: Currently only large memory model is supported by UEFI relocation code.
-
-/**
-  Performs an AARCH64-based specific relocation fixup and is a no-op on other
-  instruction sets.
-
-  @param  Reloc       The pointer to the relocation record.
-  @param  Fixup       The pointer to the address to fix up.
-  @param  FixupData   The pointer to a buffer to log the fixups.
-  @param  Adjust      The offset to adjust the fixup.
-
-  @return Status code.
-
-**/
-RETURN_STATUS
-PeCoffLoaderRelocateImageEx (
-  IN UINT16      *Reloc,
-  IN OUT CHAR8   *Fixup,
-  IN OUT CHAR8   **FixupData,
-  IN UINT64      Adjust
-  )
-{
-  UINT64      *Fixup64;
-
-  switch ((*Reloc) >> 12) {
-
-    case EFI_IMAGE_REL_BASED_DIR64:
-      Fixup64 = (UINT64 *) Fixup;
-      *Fixup64 = *Fixup64 + (UINT64) Adjust;
-      if (*FixupData != NULL) {
-        *FixupData = ALIGN_POINTER(*FixupData, sizeof(UINT64));
-        *(UINT64 *)(*FixupData) = *Fixup64;
-        *FixupData = *FixupData + sizeof(UINT64);
-      }
-      break;
-
-    default:
-      return RETURN_UNSUPPORTED;
-  }
-
-  return RETURN_SUCCESS;
-}
-
-/**
-  Returns TRUE if the machine type of PE/COFF image is supported. Supported
-  does not mean the image can be executed it means the PE/COFF loader supports
-  loading and relocating of the image type. It's up to the caller to support
-  the entry point.
-
-  @param  Machine   Machine type from the PE Header.
-
-  @return TRUE if this PE/COFF loader can load the image
-
-**/
-BOOLEAN
-PeCoffLoaderImageFormatSupported (
-  IN  UINT16  Machine
-  )
-{
-  if ((Machine == IMAGE_FILE_MACHINE_ARM64) || (Machine ==  IMAGE_FILE_MACHINE_EBC)) {
-    return TRUE;
-  }
-
-  return FALSE;
-}
-
-/**
-  Performs an ARM-based specific re-relocation fixup and is a no-op on other
-  instruction sets. This is used to re-relocated the image into the EFI virtual
-  space for runtime calls.
-
-  @param  Reloc       The pointer to the relocation record.
-  @param  Fixup       The pointer to the address to fix up.
-  @param  FixupData   The pointer to a buffer to log the fixups.
-  @param  Adjust      The offset to adjust the fixup.
-
-  @return Status code.
-
-**/
-RETURN_STATUS
-PeHotRelocateImageEx (
-  IN UINT16      *Reloc,
-  IN OUT CHAR8   *Fixup,
-  IN OUT CHAR8   **FixupData,
-  IN UINT64      Adjust
-  )
-{
-  UINT64  *Fixup64;
-
-  switch ((*Reloc) >> 12) {
-  case EFI_IMAGE_REL_BASED_DIR64:
-    Fixup64     = (UINT64 *) Fixup;
-    *FixupData  = ALIGN_POINTER (*FixupData, sizeof (UINT64));
-    if (*(UINT64 *) (*FixupData) == *Fixup64) {
-      *Fixup64 = *Fixup64 + (UINT64) Adjust;
-    }
-
-    *FixupData = *FixupData + sizeof (UINT64);
-    break;
-
-  default:
-    DEBUG ((EFI_D_ERROR, "PeHotRelocateEx:unknown fixed type\n"));
-    return RETURN_UNSUPPORTED;
-  }
-
-  return RETURN_SUCCESS;
-}

MdePkg/Library/BasePeCoffLib/BasePeCoffLib.inf

@@ -40,7 +40,7 @@
   BasePeCoffLibInternals.h
   BasePeCoff.c
 
-[Sources.IA32, Sources.X64, Sources.EBC]
+[Sources.IA32, Sources.X64, Sources.EBC, Sources.AARCH64]
   PeCoffLoaderEx.c
 
 [Sources.IPF]
@@ -49,9 +49,6 @@
 [Sources.ARM]
   Arm/PeCoffLoaderEx.c
 
-[Sources.AARCH64]
-  AArch64/PeCoffLoaderEx.c
-
 [Packages]
   MdePkg/MdePkg.dec
 

MdePkg/Library/BasePeCoffLib/PeCoffLoaderEx.c

@@ -57,7 +57,7 @@ PeCoffLoaderImageFormatSupported (
   )
 {
   if ((Machine == IMAGE_FILE_MACHINE_I386) || (Machine == IMAGE_FILE_MACHINE_X64) || 
-      (Machine ==  IMAGE_FILE_MACHINE_EBC)) {
+      (Machine == IMAGE_FILE_MACHINE_EBC) || (Machine == IMAGE_FILE_MACHINE_ARM64)) {
     return TRUE; 
   }