diff options
Diffstat (limited to 'roms/edk2/ShellPkg/Library/UefiShellDebug1CommandsLib/HexEdit/MemImage.c')
| -rw-r--r-- | roms/edk2/ShellPkg/Library/UefiShellDebug1CommandsLib/HexEdit/MemImage.c | 278 |
1 files changed, 278 insertions, 0 deletions
diff --git a/roms/edk2/ShellPkg/Library/UefiShellDebug1CommandsLib/HexEdit/MemImage.c b/roms/edk2/ShellPkg/Library/UefiShellDebug1CommandsLib/HexEdit/MemImage.c new file mode 100644 index 000000000..5e734f668 --- /dev/null +++ b/roms/edk2/ShellPkg/Library/UefiShellDebug1CommandsLib/HexEdit/MemImage.c @@ -0,0 +1,278 @@ +/** @file
+ Functions to deal with Mem buffer
+
+ Copyright (c) 2005 - 2018, Intel Corporation. All rights reserved. <BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "HexEditor.h"
+
+extern EFI_HANDLE HImageHandleBackup;
+
+extern HEFI_EDITOR_BUFFER_IMAGE HBufferImage;
+
+extern BOOLEAN HBufferImageNeedRefresh;
+extern BOOLEAN HBufferImageOnlyLineNeedRefresh;
+extern BOOLEAN HBufferImageMouseNeedRefresh;
+
+extern HEFI_EDITOR_GLOBAL_EDITOR HMainEditor;
+
+HEFI_EDITOR_MEM_IMAGE HMemImage;
+HEFI_EDITOR_MEM_IMAGE HMemImageBackupVar;
+
+//
+// for basic initialization of HDiskImage
+//
+HEFI_EDITOR_MEM_IMAGE HMemImageConst = {
+ NULL,
+ 0,
+ 0
+};
+
+/**
+ Initialization function for HDiskImage.
+
+ @retval EFI_SUCCESS The operation was successful.
+ @retval EFI_LOAD_ERROR A load error occurred.
+**/
+EFI_STATUS
+HMemImageInit (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+
+ //
+ // basically initialize the HMemImage
+ //
+ CopyMem (&HMemImage, &HMemImageConst, sizeof (HMemImage));
+
+ Status = gBS->LocateProtocol (
+ &gEfiCpuIo2ProtocolGuid,
+ NULL,
+ (VOID**)&HMemImage.IoFncs
+ );
+ if (!EFI_ERROR (Status)) {
+ return EFI_SUCCESS;
+ } else {
+ return EFI_LOAD_ERROR;
+ }
+}
+
+/**
+ Backup function for HDiskImage. Only a few fields need to be backup.
+ This is for making the Disk buffer refresh as few as possible.
+
+ @retval EFI_SUCCESS The operation was successful.
+**/
+EFI_STATUS
+HMemImageBackup (
+ VOID
+ )
+{
+ HMemImageBackupVar.Offset = HMemImage.Offset;
+ HMemImageBackupVar.Size = HMemImage.Size;
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Set FileName field in HFileImage.
+
+ @param[in] Offset The offset.
+ @param[in] Size The size.
+
+ @retval EFI_SUCCESS The operation was successful.
+ @retval EFI_OUT_OF_RESOURCES A memory allocation failed.
+**/
+EFI_STATUS
+HMemImageSetMemOffsetSize (
+ IN UINTN Offset,
+ IN UINTN Size
+ )
+{
+
+ HMemImage.Offset = Offset;
+ HMemImage.Size = Size;
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Read a disk from disk into HBufferImage.
+
+ @param[in] Offset The offset.
+ @param[in] Size The size.
+ @param[in] Recover if is for recover, no information print.
+
+ @retval EFI_LOAD_ERROR A load error occurred.
+ @retval EFI_SUCCESS The operation was successful.
+ @retval EFI_OUT_OF_RESOURCES A memory allocation failed.
+**/
+EFI_STATUS
+HMemImageRead (
+ IN UINTN Offset,
+ IN UINTN Size,
+ IN BOOLEAN Recover
+ )
+{
+
+ EFI_STATUS Status;
+ void *Buffer;
+ CHAR16 *Str;
+ HEFI_EDITOR_LINE *Line;
+
+ HBufferImage.BufferType = FileTypeMemBuffer;
+
+ Buffer = AllocateZeroPool (Size);
+ if (Buffer == NULL) {
+ StatusBarSetStatusString (L"Read Memory Failed");
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ Status = HMemImage.IoFncs->Mem.Read (
+ HMemImage.IoFncs,
+ EfiCpuIoWidthUint8,
+ Offset,
+ Size,
+ Buffer
+ );
+
+ if (EFI_ERROR (Status)) {
+ FreePool (Buffer);
+ StatusBarSetStatusString (L"Memory Specified Not Accessible");
+ return EFI_LOAD_ERROR;
+ }
+
+ HBufferImageFree ();
+
+ Status = HBufferImageBufferToList (Buffer, Size);
+ FreePool (Buffer);
+
+ if (EFI_ERROR (Status)) {
+ StatusBarSetStatusString (L"Read Memory Failed");
+ return Status;
+ }
+
+ Status = HMemImageSetMemOffsetSize (Offset, Size);
+
+ HBufferImage.DisplayPosition.Row = 2;
+ HBufferImage.DisplayPosition.Column = 10;
+
+ HBufferImage.MousePosition.Row = 2;
+ HBufferImage.MousePosition.Column = 10;
+
+ HBufferImage.LowVisibleRow = 1;
+ HBufferImage.HighBits = TRUE;
+
+ HBufferImage.BufferPosition.Row = 1;
+ HBufferImage.BufferPosition.Column = 1;
+
+ if (!Recover) {
+ Str = CatSPrint(NULL, L"%d Lines Read", HBufferImage.NumLines);
+ if (Str == NULL) {
+ StatusBarSetStatusString (L"Read Memory Failed");
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ StatusBarSetStatusString (Str);
+ SHELL_FREE_NON_NULL (Str);
+
+ HMainEditor.SelectStart = 0;
+ HMainEditor.SelectEnd = 0;
+
+ }
+
+ //
+ // has line
+ //
+ if (HBufferImage.Lines != NULL) {
+ HBufferImage.CurrentLine = CR (HBufferImage.ListHead->ForwardLink, HEFI_EDITOR_LINE, Link, EFI_EDITOR_LINE_LIST);
+ } else {
+ //
+ // create a dummy line
+ //
+ Line = HBufferImageCreateLine ();
+ if (Line == NULL) {
+ StatusBarSetStatusString (L"Read Memory Failed");
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ HBufferImage.CurrentLine = Line;
+ }
+
+ HBufferImage.Modified = FALSE;
+ HBufferImageNeedRefresh = TRUE;
+ HBufferImageOnlyLineNeedRefresh = FALSE;
+ HBufferImageMouseNeedRefresh = TRUE;
+
+ return EFI_SUCCESS;
+
+}
+
+/**
+ Save lines in HBufferImage to disk.
+
+ @param[in] Offset The offset.
+ @param[in] Size The size.
+
+ @retval EFI_LOAD_ERROR A load error occurred.
+ @retval EFI_SUCCESS The operation was successful.
+ @retval EFI_OUT_OF_RESOURCES A memory allocation failed.
+**/
+EFI_STATUS
+HMemImageSave (
+ IN UINTN Offset,
+ IN UINTN Size
+ )
+{
+
+ EFI_STATUS Status;
+ VOID *Buffer;
+
+ //
+ // not modified, so directly return
+ //
+ if (HBufferImage.Modified == FALSE) {
+ return EFI_SUCCESS;
+ }
+
+ HBufferImage.BufferType = FileTypeMemBuffer;
+
+ Buffer = AllocateZeroPool (Size);
+
+ if (Buffer == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ Status = HBufferImageListToBuffer (Buffer, Size);
+ if (EFI_ERROR (Status)) {
+ FreePool (Buffer);
+ return Status;
+ }
+ //
+ // write back to memory
+ //
+ Status = HMemImage.IoFncs->Mem.Write (
+ HMemImage.IoFncs,
+ EfiCpuIoWidthUint8,
+ Offset,
+ Size,
+ Buffer
+ );
+
+ FreePool (Buffer);
+
+ if (EFI_ERROR (Status)) {
+ return EFI_LOAD_ERROR;
+ }
+ //
+ // now not modified
+ //
+ HBufferImage.Modified = FALSE;
+
+ return EFI_SUCCESS;
+}
+
+
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