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/**@file
Copyright (c) 2006, Intel Corporation
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
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.
Module Name:
PeiUnixPeCoffExtraActionLib.c
Abstract:
Provides services to perform additional actions to relocate and unload
PE/Coff image for Unix environment specific purpose such as souce level debug.
This version only works for DXE phase
**/
#include <PiDxe.h>
#include <Guid/StatusCodeDataTypeId.h>
#include <UnixDxe.h>
#include <Library/PeCoffLib.h>
#include <Library/PeiServicesLib.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/HobLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/PeCoffExtraActionLib.h>
//
// Cache of UnixThunk protocol
//
EFI_UNIX_THUNK_PROTOCOL *mUnix;
/**
The constructor function gets the pointer of the WinNT thunk functions
It will ASSERT() if Unix thunk protocol is not installed.
@retval EFI_SUCCESS Unix thunk protocol is found and cached.
**/
EFI_STATUS
EFIAPI
DxeUnixPeCoffLibExtraActionConstructor (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_HOB_GUID_TYPE *GuidHob;
//
// Retrieve UnixThunkProtocol from GUID'ed HOB
//
GuidHob = GetFirstGuidHob (&gEfiUnixThunkProtocolGuid);
ASSERT (GuidHob != NULL);
mUnix = (EFI_UNIX_THUNK_PROTOCOL *)(*(UINTN *)(GET_GUID_HOB_DATA (GuidHob)));
ASSERT (mUnix != NULL);
return EFI_SUCCESS;
}
/**
Applies additional actions to relocate fixups to a PE/COFF image.
Generally this function is called after sucessfully Applying relocation fixups
to a PE/COFF image for some specicial purpose.
@param ImageContext Pointer to the image context structure that describes the PE/COFF
image that is being relocated.
**/
VOID
EFIAPI
PeCoffLoaderRelocateImageExtraAction (
IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
)
{
VOID * Handle;
VOID * Entry;
Handle = NULL;
Entry = NULL;
DEBUG ((EFI_D_ERROR, "Loading %s 0x%08lx - entry point 0x%08lx\n",
ImageContext->PdbPointer,
(UINTN)ImageContext->ImageAddress,
(UINTN)ImageContext->EntryPoint));
Handle = mUnix->Dlopen(ImageContext->PdbPointer, RTLD_NOW);
if (Handle) {
Entry = mUnix->Dlsym(Handle, "_ModuleEntryPoint");
} else {
DEBUG ((EFI_D_ERROR, "%s\n", mUnix->Dlerror()));
}
if (Entry != NULL) {
ImageContext->EntryPoint = Entry;
DEBUG ((EFI_D_ERROR, "Change %s Entrypoint to :0x%08lx\n", ImageContext->PdbPointer, Entry));
}
return;
}
/**
Unloads a loaded PE/COFF image from memory and releases its taken resource.
Releases any environment specific resources that were allocated when the image
specified by ImageContext was loaded using PeCoffLoaderLoadImage().
If ImageContext is NULL, then ASSERT().
@param ImageContext Pointer to the image context structure that describes the PE/COFF
image to be unloaded.
**/
VOID
EFIAPI
PeCoffLoaderUnloadImageExtraAction (
IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
)
{
}
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