X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=MdePkg%2FLibrary%2FBasePeCoffGetEntryPointLib%2FPeCoffGetEntryPoint.c;h=d0a6746e50969a0371901a1c6c45ba97159d5b6d;hb=0d49d8f681f213415c8e756b488692c83bcab62f;hp=001e043d3f22cc4829a1f8f98f05180402420a55;hpb=f1ad92e867a0b4f3299a88de4c1c7e0844f699f3;p=mirror_edk2.git

diff --git a/MdePkg/Library/BasePeCoffGetEntryPointLib/PeCoffGetEntryPoint.c b/MdePkg/Library/BasePeCoffGetEntryPointLib/PeCoffGetEntryPoint.c
index 001e043d3f..d0a6746e50 100644
--- a/MdePkg/Library/BasePeCoffGetEntryPointLib/PeCoffGetEntryPoint.c
+++ b/MdePkg/Library/BasePeCoffGetEntryPointLib/PeCoffGetEntryPoint.c
@@ -1,7 +1,7 @@
 /** @file
   Tiano PE/COFF loader.
 
-  Copyright (c) 2006, Intel Corporation<BR>
+  Copyright (c) 2006 - 2007, Intel Corporation<BR>
   All rights reserved. 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
@@ -69,17 +69,21 @@ PeCoffLoaderGetEntryPoint (
 
 
 /**
-  Returns the machine type of PE/COFF image. 
+  Returns the machine type of a PE/COFF image.
 
-  @param  Image   Pointer to a PE/COFF header
+  Returns the machine type from the PE/COFF image specified by Pe32Data.
+  If Pe32Data is NULL, then ASSERT().
+
+  @param  Pe32Data   Pointer to the PE/COFF image that is loaded in system
+                     memory.
 
-  @return         Machine type or zero if not a valid iamge
+  @return Machine type or zero if not a valid iamge.
 
 **/
 UINT16
 EFIAPI
 PeCoffLoaderGetMachineType (
-  IN  VOID  *Pe32Data
+  IN VOID  *Pe32Data
   )
 {
   EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION  Hdr;
@@ -99,4 +103,114 @@ PeCoffLoaderGetMachineType (
   return 0x0000;
 }
 
+/**
+  Returns a pointer to the PDB file name for a PE/COFF image that has been
+  loaded into system memory with the PE/COFF Loader Library functions. 
+
+  Returns the PDB file name for the PE/COFF image specified by Pe32Data.  If
+  the PE/COFF image specified by Pe32Data is not a valid, then NULL is
+  returned.  If the PE/COFF image specified by Pe32Data does not contain a
+  debug directory entry, then NULL is returned.  If the debug directory entry
+  in the PE/COFF image specified by Pe32Data does not contain a PDB file name,
+  then NULL is returned.
+  If Pe32Data is NULL, then ASSERT().
+
+  @param  Pe32Data   Pointer to the PE/COFF image that is loaded in system
+                     memory.
+
+  @return The PDB file name for the PE/COFF image specified by Pe32Data or NULL
+          if it cannot be retrieved.
+
+**/
+VOID *
+EFIAPI
+PeCoffLoaderGetPdbPointer (
+  IN VOID  *Pe32Data
+  )
+{
+  EFI_IMAGE_DOS_HEADER                  *DosHeader;
+  EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION   Hdr;
+  EFI_IMAGE_DATA_DIRECTORY              *DirectoryEntry;
+  EFI_IMAGE_DEBUG_DIRECTORY_ENTRY       *DebugEntry;
+  UINTN                                 DirCount;
+  VOID                                  *CodeViewEntryPointer;
+  INTN                                  TEImageAdjust;
+  UINT32                                NumberOfRvaAndSizes;
+ 
+  ASSERT (Pe32Data   != NULL);
+
+  TEImageAdjust       = 0;
+  DirectoryEntry      = NULL;
+  DebugEntry          = NULL;
+  NumberOfRvaAndSizes = 0;
+
+  DosHeader = (EFI_IMAGE_DOS_HEADER *)Pe32Data;
+  if (DosHeader->e_magic == EFI_IMAGE_DOS_SIGNATURE) {
+    //
+    // DOS image header is present, so read the PE header after the DOS image header.
+    //
+    Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINTN) Pe32Data + (UINTN) ((DosHeader->e_lfanew) & 0x0ffff));
+  } else {
+    //
+    // DOS image header is not present, so PE header is at the image base.
+    //
+    Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)Pe32Data;
+  }
+
+  if (Hdr.Te->Signature == EFI_TE_IMAGE_HEADER_SIGNATURE) {
+    if (Hdr.Te->DataDirectory[EFI_TE_IMAGE_DIRECTORY_ENTRY_DEBUG].VirtualAddress != 0) {
+      DirectoryEntry  = &Hdr.Te->DataDirectory[EFI_TE_IMAGE_DIRECTORY_ENTRY_DEBUG];
+      TEImageAdjust   = sizeof (EFI_TE_IMAGE_HEADER) - Hdr.Te->StrippedSize;
+      DebugEntry = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *)((UINTN) Hdr.Te +
+                    Hdr.Te->DataDirectory[EFI_TE_IMAGE_DIRECTORY_ENTRY_DEBUG].VirtualAddress +
+                    TEImageAdjust);
+    }
+  } else if (Hdr.Pe32->Signature == EFI_IMAGE_NT_SIGNATURE) {
+    if (Hdr.Pe32->OptionalHeader.Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
+      //     
+      // Use PE32 offset get Debug Directory Entry
+      //
+      NumberOfRvaAndSizes = Hdr.Pe32->OptionalHeader.NumberOfRvaAndSizes;
+      DirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *)&(Hdr.Pe32->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG]);
+      DebugEntry     = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *) ((UINTN) Pe32Data + DirectoryEntry->VirtualAddress);
+    } else if (Hdr.Pe32->OptionalHeader.Magic == EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC) {
+      //     
+      // Use PE32+ offset get Debug Directory Entry
+      //
+      NumberOfRvaAndSizes = Hdr.Pe32Plus->OptionalHeader.NumberOfRvaAndSizes;
+      DirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *)&(Hdr.Pe32Plus->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG]);
+      DebugEntry     = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *) ((UINTN) Pe32Data + DirectoryEntry->VirtualAddress);
+    }
+
+    if (NumberOfRvaAndSizes <= EFI_IMAGE_DIRECTORY_ENTRY_DEBUG) {
+      DirectoryEntry = NULL;
+      DebugEntry = NULL;
+    }
+  } else {
+    return NULL;
+  }
+
+  if (DebugEntry == NULL || DirectoryEntry == NULL) {
+    return NULL;
+  }
+
+  for (DirCount = 0; DirCount < DirectoryEntry->Size; DirCount++, DebugEntry++) {
+    if (DebugEntry->Type == EFI_IMAGE_DEBUG_TYPE_CODEVIEW) {
+      if (DebugEntry->SizeOfData > 0) {
+        CodeViewEntryPointer = (VOID *) ((UINTN) DebugEntry->RVA + ((UINTN)Pe32Data) + (UINTN)TEImageAdjust);
+        switch (* (UINT32 *) CodeViewEntryPointer) {
+        case CODEVIEW_SIGNATURE_NB10:
+          return (VOID *) ((CHAR8 *)CodeViewEntryPointer + sizeof (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY));
+        case CODEVIEW_SIGNATURE_RSDS:
+          return (VOID *) ((CHAR8 *)CodeViewEntryPointer + sizeof (EFI_IMAGE_DEBUG_CODEVIEW_RSDS_ENTRY));
+        default:
+          break;
+        }
+      }
+    }
+  }
+
+  return NULL;
+}
+