From e0d216f6a88dab3007d7633dc40e3c81d29536b9 Mon Sep 17 00:00:00 2001
From: lzeng14 <lzeng14@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Mon, 12 Nov 2012 01:33:41 +0000
Subject: Free the buffer allocated by GetSectionFromAnyFv() when exit, and add
 Error Status Check for InstallProtocolInterface(), GetSectionFromAnyFv()
 return.

Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13933 6f19259b-4bc3-4df7-8a09-765794883524
---
 .../BootScriptSaveOnS3SaveStateThunk/ScriptSave.c  | 40 +++++++++-------------
 1 file changed, 16 insertions(+), 24 deletions(-)

(limited to 'EdkCompatibilityPkg/Compatibility')

diff --git a/EdkCompatibilityPkg/Compatibility/BootScriptSaveOnS3SaveStateThunk/ScriptSave.c b/EdkCompatibilityPkg/Compatibility/BootScriptSaveOnS3SaveStateThunk/ScriptSave.c
index eb8de8ce6d..4a63977115 100644
--- a/EdkCompatibilityPkg/Compatibility/BootScriptSaveOnS3SaveStateThunk/ScriptSave.c
+++ b/EdkCompatibilityPkg/Compatibility/BootScriptSaveOnS3SaveStateThunk/ScriptSave.c
@@ -2,7 +2,7 @@
   Implementation for S3 Boot Script Save thunk driver.
   This thunk driver consumes PI S3SaveState protocol to produce framework S3BootScriptSave Protocol 
   
-  Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2010 - 2012, Intel Corporation. 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
@@ -830,7 +830,7 @@ InitializeScriptSaveOnS3SaveState (
     // This is the first-time loaded by DXE core. reload itself to NVS mem
     //
     //
-    // A workarouond: Here we install a dummy handle
+    // A workaround: Here we install a dummy handle
     //
     NewImageHandle = NULL;
     Status = gBS->InstallProtocolInterface (
@@ -839,6 +839,7 @@ InitializeScriptSaveOnS3SaveState (
                     EFI_NATIVE_INTERFACE,
                     NULL
                     );
+    ASSERT_EFI_ERROR (Status);
 
     Status = GetSectionFromAnyFv  (
                &gEfiCallerIdGuid,
@@ -847,15 +848,14 @@ InitializeScriptSaveOnS3SaveState (
                (VOID **) &Buffer,
                &BufferSize
                );
+    ASSERT_EFI_ERROR (Status);
     ImageContext.Handle    = Buffer;
     ImageContext.ImageRead = PeCoffLoaderImageReadFromMemory;
     //
     // Get information about the image being loaded
     //
     Status = PeCoffLoaderGetImageInfo (&ImageContext);
-    if (EFI_ERROR (Status)) {
-      return Status;
-    }
+    ASSERT_EFI_ERROR (Status);
 
     MemoryAddress = SIZE_4GB - 1;
     PageNumber    = EFI_SIZE_TO_PAGES (BufferSize + ImageContext.SectionAlignment);
@@ -865,9 +865,7 @@ InitializeScriptSaveOnS3SaveState (
                      PageNumber,
                      &MemoryAddress
                      );
-    if (EFI_ERROR (Status)) {
-      return EFI_OUT_OF_RESOURCES;
-    }
+    ASSERT_EFI_ERROR (Status);
     ImageContext.ImageAddress = (PHYSICAL_ADDRESS)(UINTN)MemoryAddress;
     //
     // Align buffer on section boundry
@@ -878,30 +876,26 @@ InitializeScriptSaveOnS3SaveState (
     // Load the image to our new buffer
     //
     Status = PeCoffLoaderLoadImage (&ImageContext);
-    if (EFI_ERROR (Status)) {
-      gBS->FreePages (MemoryAddress, PageNumber);
-      return Status;
-    }
+    ASSERT_EFI_ERROR (Status);
 
     //
     // Relocate the image in our new buffer
     //
     Status = PeCoffLoaderRelocateImage (&ImageContext);
+    ASSERT_EFI_ERROR (Status);
+
+    //
+    // Free the buffer allocated by ReadSection since the image has been relocated in the new buffer
+    //
+    gBS->FreePool (Buffer);
 
-    if (EFI_ERROR (Status)) {
-      PeCoffLoaderUnloadImage (&ImageContext);
-      gBS->FreePages (MemoryAddress, PageNumber);
-      return Status;
-    }
     //
     // Flush the instruction cache so the image data is written before we execute it
     //
     InvalidateInstructionCacheRange ((VOID *)(UINTN)ImageContext.ImageAddress, (UINTN)ImageContext.ImageSize);
     Status = ((EFI_IMAGE_ENTRY_POINT)(UINTN)(ImageContext.EntryPoint)) (NewImageHandle, SystemTable);
-    if (EFI_ERROR (Status)) {
-      gBS->FreePages (MemoryAddress, PageNumber);
-      return Status;
-    }
+    ASSERT_EFI_ERROR (Status);
+
     //
     // Additional step for BootScriptThunk integrity
     //
@@ -910,9 +904,7 @@ InitializeScriptSaveOnS3SaveState (
     // Allocate BootScriptThunkData
     //
     BootScriptThunkData = AllocatePool (sizeof (BOOT_SCRIPT_THUNK_DATA));
-    if (BootScriptThunkData == NULL) {
-      return EFI_OUT_OF_RESOURCES;
-    }
+    ASSERT (BootScriptThunkData != NULL);
 
     BootScriptThunkData->BootScriptThunkBase   = ImageContext.ImageAddress;
     BootScriptThunkData->BootScriptThunkLength = ImageContext.ImageSize;
-- 
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