From 2ce311322c72857f73138c45358e722607a1e80c Mon Sep 17 00:00:00 2001
From: ajfish <ajfish@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Wed, 26 Jul 2006 15:23:35 +0000
Subject: Removed cross references from PciCf8Lib and PciExpressLib class to
 PciLib class.
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Added PeCoffLoaderGetMachineType to the PeCoffGetEntryPointLibrary Class. Document to be updated.

Added the PeCoffLoaderImageReadFromMemory() and PeCoffLoaderRelocateImageForRuntime () to the PcCoffLib.

Updated EfiImage.h and removed EFI_IMAGE_OPTIONAL_HEADER and EFI_IMAGE_NT_HEADERS as they were replaced with checking the MachineType.

PeCoffLib – Added checks for MachineType so the PeCoff lib can load any PE32 or PE32+ image. The relocations are still limited to IA32, X64, IPF, and EBC. I also added a re-relocator function to remove PeLoader Code from Runtime Lib. Even though there is only one instance of the re-relocator I wanted to get all the PeCoff loader code together.

Replaced DEBUG_CODE() macro with DEBUG_CODE_START() and DEBUG_CODE_END() so you can debug through the DEBUG_CODE() macros. Also removed PE/COFF code and replaced with library usage.

I also updated the IO Instrinsic lib to use _ReadWriteBarrior() to help with sync problems

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1103 6f19259b-4bc3-4df7-8a09-765794883524
---
 MdePkg/Library/BasePeCoffLib/x64/PeCoffLoaderEx.c | 69 +++++++++++++++++------
 1 file changed, 52 insertions(+), 17 deletions(-)

(limited to 'MdePkg/Library/BasePeCoffLib/x64')

diff --git a/MdePkg/Library/BasePeCoffLib/x64/PeCoffLoaderEx.c b/MdePkg/Library/BasePeCoffLib/x64/PeCoffLoaderEx.c
index db7eead97d..7141adc2ad 100644
--- a/MdePkg/Library/BasePeCoffLib/x64/PeCoffLoaderEx.c
+++ b/MdePkg/Library/BasePeCoffLib/x64/PeCoffLoaderEx.c
@@ -31,23 +31,58 @@ PeCoffLoaderRelocateImageEx (
   IN UINT64      Adjust
   )
 {
-  UINT64      *F64;
-
-  switch ((*Reloc) >> 12) {
-
-    case EFI_IMAGE_REL_BASED_DIR64:
-      F64 = (UINT64 *) Fixup;
-      *F64 = *F64 + (UINT64) Adjust;
-      if (*FixupData != NULL) {
-        *FixupData = ALIGN_POINTER(*FixupData, sizeof(UINT64));
-        *(UINT64 *)(*FixupData) = *F64;
-        *FixupData = *FixupData + sizeof(UINT64);
-      }
-      break;
-
-    default:
-      return RETURN_UNSUPPORTED;
+  return RETURN_UNSUPPORTED;
+}
+
+/**
+  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. 
+
+  This function implies the basic PE/COFF loader/relocator supports IA32, EBC,
+  & X64 images. Calling the entry point in a correct mannor is up to the 
+  consumer of this library.
+
+  @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 == EFI_IMAGE_MACHINE_IA32) || (Machine == EFI_IMAGE_MACHINE_X64) || 
+      (Machine ==  EFI_IMAGE_MACHINE_EBC)) {
+    return TRUE; 
   }
 
-  return RETURN_SUCCESS;
+  return FALSE;
+}
+
+
+/**
+  Performs an Itanium-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       Pointer to the relocation record.
+  @param  Fixup       Pointer to the address to fix up.
+  @param  FixupData   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
+  )
+{
+  return RETURN_UNSUPPORTED;
 }
-- 
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