1 files changed, 245 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/BaseTools/Source/C/GenFw/ElfConvert.c b/src/VBox/Devices/EFI/Firmware/BaseTools/Source/C/GenFw/ElfConvert.c
new file mode 100644
index 00000000..1dfc947f
--- /dev/null
+++ b/src/VBox/Devices/EFI/Firmware/BaseTools/Source/C/GenFw/ElfConvert.c
@@ -0,0 +1,245 @@
+/** @file
+Elf convert solution
+
+Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
+
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "WinNtInclude.h"
+
+#ifndef __GNUC__
+#include <windows.h>
+#include <io.h>
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <ctype.h>
+#include <assert.h>
+
+#include <Common/UefiBaseTypes.h>
+#include <IndustryStandard/PeImage.h>
+
+#include "EfiUtilityMsgs.h"
+
+#include "GenFw.h"
+#include "ElfConvert.h"
+#include "Elf32Convert.h"
+#include "Elf64Convert.h"
+
+//
+// Result Coff file in memory.
+//
+UINT8 *mCoffFile = NULL;
+
+//
+// COFF relocation data
+//
+EFI_IMAGE_BASE_RELOCATION *mCoffBaseRel;
+UINT16                    *mCoffEntryRel;
+
+//
+// Current offset in coff file.
+//
+UINT32 mCoffOffset;
+
+//
+// Offset in Coff file of headers and sections.
+//
+UINT32 mTableOffset;
+
+//
+//mFileBufferSize
+//
+UINT32 mFileBufferSize;
+
+//
+//*****************************************************************************
+// Common ELF Functions
+//*****************************************************************************
+//
+
+VOID
+CoffAddFixupEntry(
+  UINT16 Val
+  )
+{
+  *mCoffEntryRel = Val;
+  mCoffEntryRel++;
+  mCoffBaseRel->SizeOfBlock += 2;
+  mCoffOffset += 2;
+}
+
+VOID
+CoffAddFixup(
+  UINT32 Offset,
+  UINT8  Type
+  )
+{
+  if (mCoffBaseRel == NULL
+      || mCoffBaseRel->VirtualAddress != (Offset & ~0xfff)) {
+    if (mCoffBaseRel != NULL) {
+      //
+      // Add a null entry (is it required ?)
+      //
+      CoffAddFixupEntry (0);
+
+      //
+      // Pad for alignment.
+      //
+      if (mCoffOffset % 4 != 0)
+        CoffAddFixupEntry (0);
+    }
+
+    mCoffFile = realloc (
+      mCoffFile,
+      mCoffOffset + sizeof(EFI_IMAGE_BASE_RELOCATION) + 2 * MAX_COFF_ALIGNMENT
+      );
+    if (mCoffFile == NULL) {
+      Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");
+    }
+    assert (mCoffFile != NULL);
+    memset (
+      mCoffFile + mCoffOffset, 0,
+      sizeof(EFI_IMAGE_BASE_RELOCATION) + 2 * MAX_COFF_ALIGNMENT
+      );
+
+    mCoffBaseRel = (EFI_IMAGE_BASE_RELOCATION*)(mCoffFile + mCoffOffset);
+    mCoffBaseRel->VirtualAddress = Offset & ~0xfff;
+    mCoffBaseRel->SizeOfBlock = sizeof(EFI_IMAGE_BASE_RELOCATION);
+
+    mCoffEntryRel = (UINT16 *)(mCoffBaseRel + 1);
+    mCoffOffset += sizeof(EFI_IMAGE_BASE_RELOCATION);
+  }
+
+  //
+  // Fill the entry.
+  //
+  CoffAddFixupEntry((UINT16) ((Type << 12) | (Offset & 0xfff)));
+}
+
+VOID
+CreateSectionHeader (
+  const CHAR8 *Name,
+  UINT32      Offset,
+  UINT32      Size,
+  UINT32      Flags
+  )
+{
+  EFI_IMAGE_SECTION_HEADER *Hdr;
+  Hdr = (EFI_IMAGE_SECTION_HEADER*)(mCoffFile + mTableOffset);
+
+  strcpy((char *)Hdr->Name, Name);
+  Hdr->Misc.VirtualSize = Size;
+  Hdr->VirtualAddress = Offset;
+  Hdr->SizeOfRawData = Size;
+  Hdr->PointerToRawData = Offset;
+  Hdr->PointerToRelocations = 0;
+  Hdr->PointerToLinenumbers = 0;
+  Hdr->NumberOfRelocations = 0;
+  Hdr->NumberOfLinenumbers = 0;
+  Hdr->Characteristics = Flags;
+
+  mTableOffset += sizeof (EFI_IMAGE_SECTION_HEADER);
+}
+
+//
+//*****************************************************************************
+// Functions called from GenFw main code.
+//*****************************************************************************
+//
+
+INTN
+IsElfHeader (
+  UINT8  *FileBuffer
+)
+{
+  return (FileBuffer[EI_MAG0] == ELFMAG0 &&
+          FileBuffer[EI_MAG1] == ELFMAG1 &&
+          FileBuffer[EI_MAG2] == ELFMAG2 &&
+          FileBuffer[EI_MAG3] == ELFMAG3);
+}
+
+BOOLEAN
+ConvertElf (
+  UINT8  **FileBuffer,
+  UINT32 *FileLength
+  )
+{
+  ELF_FUNCTION_TABLE              ElfFunctions;
+  UINT8                           EiClass;
+
+  mFileBufferSize = *FileLength;
+  //
+  // Determine ELF type and set function table pointer correctly.
+  //
+  VerboseMsg ("Check Elf Image Header");
+  EiClass = (*FileBuffer)[EI_CLASS];
+  if (EiClass == ELFCLASS32) {
+    if (!InitializeElf32 (*FileBuffer, &ElfFunctions)) {
+      return FALSE;
+    }
+  } else if (EiClass == ELFCLASS64) {
+    if (!InitializeElf64 (*FileBuffer, &ElfFunctions)) {
+      return FALSE;
+    }
+  } else {
+    Error (NULL, 0, 3000, "Unsupported", "ELF EI_CLASS not supported.");
+    return FALSE;
+  }
+
+  //
+  // Compute sections new address.
+  //
+  VerboseMsg ("Compute sections new address.");
+  ElfFunctions.ScanSections ();
+
+  //
+  // Write and relocate sections.
+  //
+  VerboseMsg ("Write and relocate sections.");
+  if (!ElfFunctions.WriteSections (SECTION_TEXT)) {
+    return FALSE;
+  }
+  if (!ElfFunctions.WriteSections (SECTION_DATA)) {
+    return FALSE;
+  }
+  if (!ElfFunctions.WriteSections (SECTION_HII)) {
+    return FALSE;
+  }
+
+  //
+  // Translate and write relocations.
+  //
+  VerboseMsg ("Translate and write relocations.");
+  ElfFunctions.WriteRelocations ();
+
+  //
+  // Write debug info.
+  //
+  VerboseMsg ("Write debug info.");
+  ElfFunctions.WriteDebug ();
+
+  //
+  // Make sure image size is correct before returning the new image.
+  //
+  VerboseMsg ("Set image size.");
+  ElfFunctions.SetImageSize ();
+
+  //
+  // Replace.
+  //
+  free (*FileBuffer);
+  *FileBuffer = mCoffFile;
+  *FileLength = mCoffOffset;
+
+  //
+  // Free resources used by ELF functions.
+  //
+  ElfFunctions.CleanUp ();
+
+  return TRUE;
+}