CloverBootloader/MdeModulePkg/Universal/EbcDxe/EbcDebugger/EdbCmdSymbol.c
2019-09-03 12:58:42 +03:00

863 lines
22 KiB
C

/** @file
Copyright (c) 2007 - 2016, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "Edb.h"
/**
Get file name from full path.
@param FullPath - full file path
@return file name
**/
CHAR16 *
GetFileNameFromFullPath (
IN CHAR16 *FullPath
)
{
CHAR16 *FileName;
CHAR16 *TempFileName;
FileName = FullPath;
TempFileName = StrGetNewTokenLine (FullPath, L"\\");
while (TempFileName != NULL) {
FileName = TempFileName;
TempFileName = StrGetNextTokenLine (L"\\");
PatchForStrTokenBefore (TempFileName, L'\\');
}
return FileName;
}
/**
Get dir name from full path.
@param FullPath - full file path
@return dir name
**/
CHAR16 *
GetDirNameFromFullPath (
IN CHAR16 *FullPath
)
{
CHAR16 *FileName;
FileName = GetFileNameFromFullPath (FullPath);
if (FileName != FullPath) {
*(FileName - 1) = 0;
return FullPath;
}
return L"";
}
/**
Construct full path according to dir and file path.
@param DirPath - dir path
@param FilePath - file path
@param Size - dir max size
@return Full file name
**/
CHAR16 *
ConstructFullPath (
IN CHAR16 *DirPath,
IN CHAR16 *FilePath,
IN UINTN Size
)
{
UINTN DirPathSize;
DirPathSize = StrLen(DirPath);
*(DirPath + DirPathSize) = L'\\';
StrnCatS (DirPath, DirPathSize + Size + 1, FilePath, Size);
*(DirPath + DirPathSize + Size + 1) = 0;
return DirPath;
}
CHAR16 *mSymbolTypeStr[] = {
L"( F)",
L"(SF)",
L"(GV)",
L"(SV)",
};
/**
Comvert Symbol Type to string.
@param Type - Symbol Type
@return String
**/
CHAR16 *
EdbSymbolTypeToStr (
IN EFI_DEBUGGER_SYMBOL_TYPE Type
)
{
if (Type < 0 || Type >= EfiDebuggerSymbolTypeMax) {
return L"(?)";
}
return mSymbolTypeStr [Type];
}
/**
Find the symbol according to address and display symbol.
@param Address - SymbolAddress
@param DebuggerPrivate - EBC Debugger private data structure
@retval EFI_DEBUG_CONTINUE - formal return value
**/
EFI_DEBUG_STATUS
DebuggerDisplaySymbolAccrodingToAddress (
IN UINTN Address,
IN EFI_DEBUGGER_PRIVATE_DATA *DebuggerPrivate
)
{
EFI_DEBUGGER_SYMBOL_OBJECT *Object;
EFI_DEBUGGER_SYMBOL_ENTRY *Entry;
UINTN CandidateAddress;
//
// Find the nearest symbol address
//
CandidateAddress = EbdFindSymbolAddress (Address, EdbMatchSymbolTypeNearestAddress, &Object, &Entry);
if (CandidateAddress == 0 || CandidateAddress == (UINTN) -1) {
EDBPrint (L"Symbole at Address not found!\n");
return EFI_DEBUG_CONTINUE;
} else if (Address != CandidateAddress) {
EDBPrint (L"Symbole at Address not found, print nearest one!\n");
}
//
// Display symbol
//
EDBPrint (L"Symbol File Name: %s\n", Object->Name);
if (sizeof(UINTN) == sizeof(UINT64)) {
EDBPrint (L" Address Type Symbol\n");
EDBPrint (L" ================== ==== ========\n");
// EDBPrint (L" 0xFFFFFFFF00000000 ( F) TestMain\n");
EDBPrint (
L" 0x%016lx %s %a\n",
(UINT64)Entry->Rva + Object->BaseAddress,
EdbSymbolTypeToStr (Entry->Type),
Entry->Name
);
} else {
EDBPrint (L" Address Type Symbol\n");
EDBPrint (L" ========== ==== ========\n");
// EDBPrint (L" 0xFFFF0000 ( F) TestMain\n");
EDBPrint (
L" 0x%08x %s %a\n",
Entry->Rva + Object->BaseAddress,
EdbSymbolTypeToStr (Entry->Type),
Entry->Name
);
}
//
// Done
//
return EFI_DEBUG_CONTINUE;
}
/**
Find the symbol according to name and display symbol.
@param SymbolFileName - The Symbol File Name, NULL means for all
@param SymbolName - The Symbol Name, NULL means for all
@param DebuggerPrivate - EBC Debugger private data structure
@retval EFI_DEBUG_CONTINUE - formal return value
**/
EFI_DEBUG_STATUS
DebuggerDisplaySymbolAccrodingToName (
IN CHAR16 *SymbolFileName,
IN CHAR16 *SymbolName,
IN EFI_DEBUGGER_PRIVATE_DATA *DebuggerPrivate
)
{
UINTN Index;
UINTN SubIndex;
EFI_DEBUGGER_SYMBOL_OBJECT *Object;
EFI_DEBUGGER_SYMBOL_ENTRY *Entry;
if (DebuggerPrivate->DebuggerSymbolContext.ObjectCount == 0) {
EDBPrint (L"No Symbol File!\n");
return EFI_DEBUG_CONTINUE;
}
//
// Go throuth each symbol file
//
Object = DebuggerPrivate->DebuggerSymbolContext.Object;
for (Index = 0; Index < DebuggerPrivate->DebuggerSymbolContext.ObjectCount; Index++, Object++) {
if ((SymbolFileName != NULL) &&
(StriCmp (SymbolFileName, Object->Name) != 0)) {
continue;
}
//
// Break each symbol file
//
if (Index != 0) {
if (SetPageBreak ()) {
break;
}
}
EDBPrint (L"Symbol File Name: %s\n", Object->Name);
if (Object->EntryCount == 0) {
EDBPrint (L"No Symbol!\n");
continue;
}
Entry = Object->Entry;
if (sizeof(UINTN) == sizeof(UINT64)) {
EDBPrint (L" Address Type Symbol\n");
EDBPrint (L" ================== ==== ========\n");
// EDBPrint (L" 0xFFFFFFFF00000000 ( F) TestMain (EbcTest.obj)\n");
} else {
EDBPrint (L" Address Type Symbol\n");
EDBPrint (L" ========== ==== ========\n");
// EDBPrint (L" 0xFFFF0000 ( F) TestMain (EbcTest.obj)\n");
}
//
// Go through each symbol name
//
for (SubIndex = 0; SubIndex < Object->EntryCount; SubIndex++, Entry++) {
if ((SymbolName != NULL) &&
(StrCmpUnicodeAndAscii (SymbolName, Entry->Name) != 0)) {
continue;
}
//
// Break symbol
//
if (((SubIndex % EFI_DEBUGGER_LINE_NUMBER_IN_PAGE) == 0) &&
(SubIndex != 0)) {
if (SetPageBreak ()) {
break;
}
}
if (sizeof(UINTN) == sizeof(UINT64)) {
EDBPrint (
L" 0x%016lx %s %a (%a)\n",
(UINT64)Entry->Rva + Object->BaseAddress,
EdbSymbolTypeToStr (Entry->Type),
Entry->Name,
Entry->ObjName
);
} else {
EDBPrint (
L" 0x%08x %s %a (%a)\n",
Entry->Rva + Object->BaseAddress,
EdbSymbolTypeToStr (Entry->Type),
Entry->Name,
Entry->ObjName
);
}
}
}
//
// Done
//
return EFI_DEBUG_CONTINUE;
}
/**
DebuggerCommand - ListSymbol.
@param CommandArg - The argument for this command
@param DebuggerPrivate - EBC Debugger private data structure
@param ExceptionType - Exception type.
@param SystemContext - EBC system context.
@retval EFI_DEBUG_CONTINUE - formal return value
**/
EFI_DEBUG_STATUS
DebuggerListSymbol (
IN CHAR16 *CommandArg,
IN EFI_DEBUGGER_PRIVATE_DATA *DebuggerPrivate,
IN EFI_EXCEPTION_TYPE ExceptionType,
IN OUT EFI_SYSTEM_CONTEXT SystemContext
)
{
CHAR16 *SymbolFileName;
CHAR16 *SymbolName;
CHAR16 *CommandStr;
UINTN Address;
SymbolFileName = NULL;
SymbolName = NULL;
CommandStr = CommandArg;
//
// display symbol according to address
//
if (CommandStr != NULL) {
if ((StriCmp (CommandStr, L"F") != 0) &&
(StriCmp (CommandStr, L"S") != 0)) {
Address = Xtoi (CommandStr);
return DebuggerDisplaySymbolAccrodingToAddress (Address, DebuggerPrivate);
}
}
//
// Get SymbolFileName
//
if (CommandStr != NULL) {
if (StriCmp (CommandStr, L"F") == 0) {
CommandStr = StrGetNextTokenLine (L" ");
if (CommandStr == NULL) {
EDBPrint (L"Symbol File Name missing!\n");
return EFI_DEBUG_CONTINUE;
} else {
SymbolFileName = CommandStr;
CommandStr = StrGetNextTokenLine (L" ");
}
}
}
//
// Get SymbolName
//
if (CommandStr != NULL) {
if (StriCmp (CommandStr, L"S") == 0) {
CommandStr = StrGetNextTokenLine (L" ");
if (CommandStr == NULL) {
EDBPrint (L"Symbol Name missing!\n");
return EFI_DEBUG_CONTINUE;
} else {
SymbolName = CommandStr;
CommandStr = StrGetNextTokenLine (L" ");
}
}
}
if (CommandStr != NULL) {
EDBPrint (L"Argument error!\n");
return EFI_DEBUG_CONTINUE;
}
//
// display symbol according to name
//
return DebuggerDisplaySymbolAccrodingToName (SymbolFileName, SymbolName, DebuggerPrivate);
}
/**
DebuggerCommand - LoadSymbol.
@param CommandArg - The argument for this command
@param DebuggerPrivate - EBC Debugger private data structure
@param ExceptionType - Exception type.
@param SystemContext - EBC system context.
@retval EFI_DEBUG_CONTINUE - formal return value
**/
EFI_DEBUG_STATUS
DebuggerLoadSymbol (
IN CHAR16 *CommandArg,
IN EFI_DEBUGGER_PRIVATE_DATA *DebuggerPrivate,
IN EFI_EXCEPTION_TYPE ExceptionType,
IN OUT EFI_SYSTEM_CONTEXT SystemContext
)
{
UINTN BufferSize;
VOID *Buffer;
EFI_STATUS Status;
CHAR16 *FileName;
CHAR16 *CommandArg2;
BOOLEAN IsLoadCode;
CHAR16 *DirName;
CHAR16 CodFile[EFI_DEBUGGER_SYMBOL_NAME_MAX];
CHAR16 *CodFileName;
UINTN Index;
//
// Check the argument
//
if (CommandArg == NULL) {
EDBPrint (L"SymbolFile not found!\n");
return EFI_DEBUG_CONTINUE;
}
IsLoadCode = FALSE;
CommandArg2 = StrGetNextTokenLine (L" ");
if (CommandArg2 != NULL) {
if (StriCmp (CommandArg2, L"a") == 0) {
IsLoadCode = TRUE;
} else {
EDBPrint (L"Argument error!\n");
return EFI_DEBUG_CONTINUE;
}
}
if (StrLen (CommandArg) <= 4) {
EDBPrint (L"SymbolFile name error!\n");
return EFI_DEBUG_CONTINUE;
}
if (StriCmp (CommandArg + (StrLen (CommandArg) - 4), L".map") != 0) {
EDBPrint (L"SymbolFile name error!\n");
return EFI_DEBUG_CONTINUE;
}
//
// Read MAP file to memory
//
Status = ReadFileToBuffer (DebuggerPrivate, CommandArg, &BufferSize, &Buffer, TRUE);
if (EFI_ERROR(Status)) {
EDBPrint (L"SymbolFile read error!\n");
return EFI_DEBUG_CONTINUE;
}
FileName = GetFileNameFromFullPath (CommandArg);
//
// Load Symbol
//
Status = EdbLoadSymbol (DebuggerPrivate, FileName, BufferSize, Buffer);
if (EFI_ERROR(Status)) {
EDBPrint (L"LoadSymbol error!\n");
gBS->FreePool (Buffer);
return EFI_DEBUG_CONTINUE;
}
gBS->FreePool (Buffer);
//
// Patch Symbol for RVA
//
Status = EdbPatchSymbolRVA (DebuggerPrivate, FileName, EdbEbcImageRvaSearchTypeLast);
if (EFI_ERROR(Status)) {
EDBPrint (L"PatchSymbol RVA - %r! Using the RVA in symbol file.\n", Status);
} else {
DEBUG ((DEBUG_ERROR, "PatchSymbol RVA successfully!\n"));
}
if (!IsLoadCode) {
return EFI_DEBUG_CONTINUE;
}
//
// load each cod file
//
DirName = GetDirNameFromFullPath (CommandArg);
ZeroMem (CodFile, sizeof(CodFile));
if (StrCmp (DirName, L"") != 0) {
StrCpyS (CodFile, sizeof(CodFile), DirName);
} else {
DirName = L"\\";
}
//
// Go throuth each file under this dir
//
Index = 0;
CodFileName = GetFileNameUnderDir (DebuggerPrivate, DirName, L".cod", &Index);
while (CodFileName != NULL) {
ZeroMem (CodFile, sizeof(CodFile));
if (StrCmp (DirName, L"\\") != 0) {
StrCpyS (CodFile, sizeof(CodFile), DirName);
}
//
// read cod file to memory
//
Status = ReadFileToBuffer (DebuggerPrivate, ConstructFullPath (CodFile, CodFileName, EFI_DEBUGGER_SYMBOL_NAME_MAX - StrLen (CodFile) - 2), &BufferSize, &Buffer, FALSE);
if (EFI_ERROR(Status)) {
EDBPrint (L"CodeFile read error!\n");
CodFileName = GetFileNameUnderDir (DebuggerPrivate, DirName, L".cod", &Index);
continue;
}
//
// Load Code
//
Status = EdbLoadCode (DebuggerPrivate, FileName, CodFileName, BufferSize, Buffer);
if (EFI_ERROR (Status)) {
EDBPrint (L"LoadCode error!\n");
gBS->FreePool (Buffer);
CodFileName = GetFileNameUnderDir (DebuggerPrivate, DirName, L".cod", &Index);
continue;
}
//
// Record the buffer
//
Status = EdbAddCodeBuffer (DebuggerPrivate, FileName, CodFileName, BufferSize, Buffer);
if (EFI_ERROR (Status)) {
EDBPrint (L"AddCodeBuffer error!\n");
gBS->FreePool (Buffer);
CodFileName = GetFileNameUnderDir (DebuggerPrivate, DirName, L".cod", &Index);
continue;
}
//
// Get next file
//
CodFileName = GetFileNameUnderDir (DebuggerPrivate, DirName, L".cod", &Index);
}
//
// Done
//
return EFI_DEBUG_CONTINUE;
}
/**
DebuggerCommand - UnloadSymbol
@param CommandArg - The argument for this command
@param DebuggerPrivate - EBC Debugger private data structure
@param ExceptionType - Exception type.
@param SystemContext - EBC system context.
@retval EFI_DEBUG_CONTINUE - formal return value
**/
EFI_DEBUG_STATUS
DebuggerUnloadSymbol (
IN CHAR16 *CommandArg,
IN EFI_DEBUGGER_PRIVATE_DATA *DebuggerPrivate,
IN EFI_EXCEPTION_TYPE ExceptionType,
IN OUT EFI_SYSTEM_CONTEXT SystemContext
)
{
EFI_STATUS Status;
CHAR16 *FileName;
CHAR16 *DirName;
CHAR16 CodFile[EFI_DEBUGGER_SYMBOL_NAME_MAX];
CHAR16 *CodFileName;
UINTN Index;
VOID *BufferPtr;
//
// Check the argument
//
if (CommandArg == NULL) {
EDBPrint (L"SymbolFile not found!\n");
return EFI_DEBUG_CONTINUE;
}
FileName = GetFileNameFromFullPath (CommandArg);
//
// Unload Code
//
DirName = GetDirNameFromFullPath (CommandArg);
ZeroMem (CodFile, sizeof(CodFile));
if (StrCmp (DirName, L"") != 0) {
StrCpyS (CodFile, sizeof(CodFile), DirName);
} else {
DirName = L"\\";
}
//
// Go through each file under this dir
//
Index = 0;
CodFileName = GetFileNameUnderDir (DebuggerPrivate, DirName, L".cod", &Index);
while (CodFileName != NULL) {
ZeroMem (CodFile, sizeof(CodFile));
if (StrCmp (DirName, L"\\") != 0) {
StrCpyS (CodFile, sizeof(CodFile), DirName);
}
//
// Unload Code
//
Status = EdbUnloadCode (DebuggerPrivate, FileName, CodFileName, &BufferPtr);
if (EFI_ERROR (Status)) {
EDBPrint (L"UnloadCode error!\n");
CodFileName = GetFileNameUnderDir (DebuggerPrivate, DirName, L".cod", &Index);
continue;
}
//
// Delete the code buffer
//
Status = EdbDeleteCodeBuffer (DebuggerPrivate, FileName, CodFileName, BufferPtr);
if (EFI_ERROR (Status)) {
EDBPrint (L"DeleteCodeBuffer error!\n");
CodFileName = GetFileNameUnderDir (DebuggerPrivate, DirName, L".cod", &Index);
continue;
}
//
// Get next file
//
CodFileName = GetFileNameUnderDir (DebuggerPrivate, DirName, L".cod", &Index);
}
//
// Unload Symbol
//
Status = EdbUnloadSymbol (DebuggerPrivate, FileName);
if (EFI_ERROR(Status)) {
EDBPrint (L"UnloadSymbol error!\n");
}
//
// Done
//
return EFI_DEBUG_CONTINUE;
}
/**
DebuggerCommand - DisplaySymbol.
@param CommandArg - The argument for this command
@param DebuggerPrivate - EBC Debugger private data structure
@param ExceptionType - Exception type.
@param SystemContext - EBC system context.
@retval EFI_DEBUG_CONTINUE - formal return value
**/
EFI_DEBUG_STATUS
DebuggerDisplaySymbol (
IN CHAR16 *CommandArg,
IN EFI_DEBUGGER_PRIVATE_DATA *DebuggerPrivate,
IN EFI_EXCEPTION_TYPE ExceptionType,
IN OUT EFI_SYSTEM_CONTEXT SystemContext
)
{
if (CommandArg == NULL) {
DebuggerPrivate->DebuggerSymbolContext.DisplaySymbol = !DebuggerPrivate->DebuggerSymbolContext.DisplaySymbol;
EdbShowDisasm (DebuggerPrivate, SystemContext);
} else if (StriCmp (CommandArg, L"on") == 0) {
DebuggerPrivate->DebuggerSymbolContext.DisplaySymbol = TRUE;
EdbShowDisasm (DebuggerPrivate, SystemContext);
} else if (StriCmp (CommandArg, L"off") == 0) {
DebuggerPrivate->DebuggerSymbolContext.DisplaySymbol = FALSE;
EdbShowDisasm (DebuggerPrivate, SystemContext);
} else {
EDBPrint (L"DisplaySymbol - argument error\n");
}
return EFI_DEBUG_CONTINUE;
}
/**
DebuggerCommand - LoadCode.
@param CommandArg - The argument for this command
@param DebuggerPrivate - EBC Debugger private data structure
@param ExceptionType - Exception type.
@param SystemContext - EBC system context.
@retval EFI_DEBUG_CONTINUE - formal return value
**/
EFI_DEBUG_STATUS
DebuggerLoadCode (
IN CHAR16 *CommandArg,
IN EFI_DEBUGGER_PRIVATE_DATA *DebuggerPrivate,
IN EFI_EXCEPTION_TYPE ExceptionType,
IN OUT EFI_SYSTEM_CONTEXT SystemContext
)
{
UINTN BufferSize;
VOID *Buffer;
EFI_STATUS Status;
CHAR16 *CommandArg2;
CHAR16 *FileName;
CHAR16 *MapFileName;
//
// Check the argument
//
if (CommandArg == NULL) {
EDBPrint (L"CodeFile not found!\n");
return EFI_DEBUG_CONTINUE;
}
CommandArg2 = StrGetNextTokenLine (L" ");
if (CommandArg2 == NULL) {
EDBPrint (L"SymbolFile not found!\n");
return EFI_DEBUG_CONTINUE;
}
if (StrLen (CommandArg) <= 4) {
EDBPrint (L"CodeFile name error!\n");
return EFI_DEBUG_CONTINUE;
}
if (StriCmp (CommandArg + (StrLen (CommandArg) - 4), L".cod") != 0) {
EDBPrint (L"CodeFile name error!\n");
return EFI_DEBUG_CONTINUE;
}
if (StrLen (CommandArg2) <= 4) {
EDBPrint (L"SymbolFile name error!\n");
return EFI_DEBUG_CONTINUE;
}
if (StriCmp (CommandArg2 + (StrLen (CommandArg2) - 4), L".map") != 0) {
EDBPrint (L"SymbolFile name error!\n");
return EFI_DEBUG_CONTINUE;
}
//
// read cod file to memory
//
Status = ReadFileToBuffer (DebuggerPrivate, CommandArg, &BufferSize, &Buffer, TRUE);
if (EFI_ERROR(Status)) {
EDBPrint (L"CodeFile read error!\n");
return EFI_DEBUG_CONTINUE;
}
FileName = GetFileNameFromFullPath (CommandArg);
MapFileName = GetFileNameFromFullPath (CommandArg2);
//
// Load Code
//
Status = EdbLoadCode (DebuggerPrivate, MapFileName, FileName, BufferSize, Buffer);
if (EFI_ERROR (Status)) {
EDBPrint (L"LoadCode error!\n");
gBS->FreePool (Buffer);
return EFI_DEBUG_CONTINUE;
}
//
// Record the buffer
//
Status = EdbAddCodeBuffer (DebuggerPrivate, MapFileName, FileName, BufferSize, Buffer);
if (EFI_ERROR (Status)) {
EDBPrint (L"AddCodeBuffer error!\n");
gBS->FreePool (Buffer);
return EFI_DEBUG_CONTINUE;
}
//
// Done
//
return EFI_DEBUG_CONTINUE;
}
/**
DebuggerCommand - UnloadCode.
@param CommandArg - The argument for this command
@param DebuggerPrivate - EBC Debugger private data structure
@param ExceptionType - Exception type.
@param SystemContext - EBC system context.
@retval EFI_DEBUG_CONTINUE - formal return value
**/
EFI_DEBUG_STATUS
DebuggerUnloadCode (
IN CHAR16 *CommandArg,
IN EFI_DEBUGGER_PRIVATE_DATA *DebuggerPrivate,
IN EFI_EXCEPTION_TYPE ExceptionType,
IN OUT EFI_SYSTEM_CONTEXT SystemContext
)
{
CHAR16 *CommandArg2;
CHAR16 *FileName;
CHAR16 *MapFileName;
EFI_STATUS Status;
VOID *BufferPtr;
//
// Check the argument
//
if (CommandArg == NULL) {
EDBPrint (L"CodeFile not found!\n");
return EFI_DEBUG_CONTINUE;
}
CommandArg2 = StrGetNextTokenLine (L" ");
if (CommandArg2 == NULL) {
EDBPrint (L"SymbolFile not found!\n");
return EFI_DEBUG_CONTINUE;
}
FileName = GetFileNameFromFullPath (CommandArg);
MapFileName = GetFileNameFromFullPath (CommandArg2);
//
// Unload Code
//
Status = EdbUnloadCode (DebuggerPrivate, MapFileName, FileName, &BufferPtr);
if (EFI_ERROR (Status)) {
EDBPrint (L"UnloadCode error!\n");
return EFI_DEBUG_CONTINUE;
}
//
// Delete Code buffer
//
Status = EdbDeleteCodeBuffer (DebuggerPrivate, MapFileName, FileName, BufferPtr);
if (EFI_ERROR (Status)) {
EDBPrint (L"DeleteCodeBuffer error!\n");
}
//
// Done
//
return EFI_DEBUG_CONTINUE;
}
/**
DebuggerCommand - DisplayCode.
@param CommandArg - The argument for this command
@param DebuggerPrivate - EBC Debugger private data structure
@param ExceptionType - Exception type.
@param SystemContext - EBC system context.
@retval EFI_DEBUG_CONTINUE - formal return value
**/
EFI_DEBUG_STATUS
DebuggerDisplayCode (
IN CHAR16 *CommandArg,
IN EFI_DEBUGGER_PRIVATE_DATA *DebuggerPrivate,
IN EFI_EXCEPTION_TYPE ExceptionType,
IN OUT EFI_SYSTEM_CONTEXT SystemContext
)
{
if (CommandArg == NULL) {
DebuggerPrivate->DebuggerSymbolContext.DisplayCodeOnly = !DebuggerPrivate->DebuggerSymbolContext.DisplayCodeOnly;
EdbShowDisasm (DebuggerPrivate, SystemContext);
} else if (StriCmp (CommandArg, L"on") == 0) {
DebuggerPrivate->DebuggerSymbolContext.DisplayCodeOnly = TRUE;
EdbShowDisasm (DebuggerPrivate, SystemContext);
} else if (StriCmp (CommandArg, L"off") == 0) {
DebuggerPrivate->DebuggerSymbolContext.DisplayCodeOnly = FALSE;
EdbShowDisasm (DebuggerPrivate, SystemContext);
} else {
EDBPrint (L"DisplayCode - argument error\n");
}
return EFI_DEBUG_CONTINUE;
}