singrdk/base/Windows/singx86/charv.cpp

73 lines
2.2 KiB
C++

///////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
#include "singx86.h"
struct CharVector {
ULONG64 ulDataOffset;
ULONG64 ulDataLength;
};
EXT_DECL(charv) // Defines: PDEBUG_CLIENT Client, PCSTR args
{
EXT_ENTER(); // Defines: HRESULT status = S_OK;
if (!isalpha(args[0])) {
ExtOut("Usage:\n !charv <var>\n");
goto Exit;
}
ULONG64 indirect = 0;
EXT_CHECK(g_ExtSymbols->GetOffsetByName(args, &indirect));
ULONG64 offset = 0;
EXT_CHECK(g_ExtData->ReadPointersVirtual(1, indirect, &offset));
ULONG typeId;
ULONG64 module;
EXT_CHECK(g_ExtSymbols->GetSymbolTypeId(args, &typeId, &module));
CHAR szTypeName[255];
const SIZE_T cbTypeName = sizeof(szTypeName) / sizeof(szTypeName[0]);
EXT_CHECK(g_ExtSymbols->GetTypeName(module, typeId,
szTypeName, cbTypeName, NULL));
const CHAR szExpected[] = "char**";
const SIZE_T cbExpected = sizeof(szExpected) / sizeof(szExpected[0]);
if (strncmp(szTypeName, szExpected, cbExpected)) {
ExtOut("%s is not a char vector.\n", args);
goto Exit;
}
struct CharVector cv;
EXT_CHECK(g_ExtData->ReadPointersVirtual(2, offset, (PULONG64)&cv));
SIZE_T cChars = (SIZE_T) cv.ulDataLength / sizeof(WCHAR);
PWCHAR pwcText = new WCHAR[cChars + 1];
pwcText[cChars] = UNICODE_NULL;
HRESULT hRR =
g_ExtData->ReadVirtual(cv.ulDataOffset,
pwcText,
(ULONG)cv.ulDataLength,
NULL);
if (S_OK == hRR) {
g_ExtControl->Output(DEBUG_OUTPUT_NORMAL,
"Char vector %s : address 0x%p length " \
"0x%p\nValue = \"",
args, cv.ulDataOffset,
(cv.ulDataLength / sizeof(WCHAR)));
g_ExtControl->OutputWide(DEBUG_OUTPUT_NORMAL, pwcText);
g_ExtControl->Output(DEBUG_OUTPUT_NORMAL, "\"\n");
}
else {
ExtVerb("ReadVirtual failed (%p)", hRR);
}
delete [] pwcText;
EXT_LEAVE();
}