void DecodeIL(IMetaDataImport *pImport, BYTE *buffer, ULONG bufSize)
{
// First decode the header
COR_ILMETHOD *pHeader = (COR_ILMETHOD *) buffer;
COR_ILMETHOD_DECODER header(pHeader);
// Set globals
position = 0;
pBuffer = (BYTE *) header.Code;
UINT indentCount = 0;
ULONG endCodePosition = header.GetCodeSize();
while(position < endCodePosition)
{
for (unsigned e=0;e<header.EHCount();e++)
{
IMAGE_COR_ILMETHOD_SECT_EH_CLAUSE_FAT ehBuff;
const IMAGE_COR_ILMETHOD_SECT_EH_CLAUSE_FAT* ehInfo;
ehInfo = header.EH->EHClause(e,&ehBuff);
if (ehInfo->TryOffset == position)
{
printf ("%*s.try\n%*s{\n", indentCount, "", indentCount, "");
indentCount+=2;
}
else if ((ehInfo->TryOffset + ehInfo->TryLength) == position)
{
indentCount-=2;
printf("%*s} // end .try\n", indentCount, "");
}
if (ehInfo->HandlerOffset == position)
{
if (ehInfo->Flags == COR_ILEXCEPTION_CLAUSE_FINALLY)
printf("%*s.finally\n%*s{\n", indentCount, "", indentCount, "");
else
printf("%*s.catch\n%*s{\n", indentCount, "", indentCount, "");
indentCount+=2;
}
else if ((ehInfo->HandlerOffset + ehInfo->HandlerLength) == position)
{
indentCount-=2;
if (ehInfo->Flags == COR_ILEXCEPTION_CLAUSE_FINALLY)
printf("%*s} // end .finally\n", indentCount, "");
else
printf("%*s} // end .catch\n", indentCount, "");
}
}
printf("%*sIL_%04x: ", indentCount, "", position);
unsigned int c = readOpcode();
OpCode opcode = opcodes[c];
printf("%s ", opcode.name);
switch(opcode.args)
{
case InlineNone: break;
case ShortInlineVar:
printf("VAR OR ARG %d",readData<BYTE>()); break;
case InlineVar:
printf("VAR OR ARG %d",readData<unsigned short>()); break;
case InlineI:
printf("%d",readData<long>());
break;
case InlineR:
printf("%f",readData<double>());
break;
case InlineBrTarget:
printf("IL_%04x",readData<long>() + position); break;
case ShortInlineBrTarget:
printf("IL_%04x",readData<BYTE>() + position); break;
case InlineI8:
printf("%ld", readData<__int64>()); break;
case InlineMethod:
case InlineField:
case InlineType:
case InlineTok:
case InlineSig:
{
long l = readData<long>();
if (pImport != NULL)
{
DisassembleToken(pImport, l);
}
else
{
printf("TOKEN %x", l);
}
break;
}
case InlineString:
{
long l = readData<long>();
ULONG numChars;
WCHAR str[84];
if ((pImport != NULL) && (pImport->GetUserString((mdString) l, str, 80, &numChars) == S_OK))
{
if (numChars < 80)
str[numChars] = 0;
wcscpy_s(&str[79], 4, L"...");
WCHAR* ptr = str;
while(*ptr != 0) {
if (*ptr < 0x20 || * ptr >= 0x80) {
*ptr = '.';
}
ptr++;
}
printf("\"%S\"", str);
}
else
{
printf("STRING %x", l);
}
break;
}
case InlineSwitch:
{
long cases = readData<long>();
long *pArray = new long[cases];
long i=0;
for(i=0;i<cases;i++)
{
pArray[i] = readData<long>();
}
printf("(");
for(i=0;i<cases;i++)
{
if (i != 0)
printf(", ");
printf("IL_%04x",pArray[i] + position);
}
printf(")");
delete [] pArray;
break;
}
case ShortInlineI:
printf("%d", readData<char>()); break;
case ShortInlineR:
printf("%f", readData<float>()); break;
default: printf("Error, unexpected opcode type\n"); break;
}
printf("\n");
}
}
// Similar to the function above. TODO: factor them together before checkin.
void DecodeDynamicIL(BYTE *data, ULONG Size, DacpObjectData& tokenArray)
{
// There is no header for this dynamic guy.
// Set globals
position = 0;
pBuffer = data;
// At this time no exception information will be displayed (fix soon)
UINT indentCount = 0;
ULONG endCodePosition = Size;
while(position < endCodePosition)
{
printf("%*sIL_%04x: ", indentCount, "", position);
unsigned int c = readOpcode();
OpCode opcode = opcodes[c];
printf("%s ", opcode.name);
switch(opcode.args)
{
case InlineNone: break;
case ShortInlineVar:
printf("VAR OR ARG %d",readData<BYTE>()); break;
case InlineVar:
printf("VAR OR ARG %d",readData<unsigned short>()); break;
case InlineI:
printf("%d",readData<long>());
break;
case InlineR:
printf("%f",readData<double>());
break;
case InlineBrTarget:
printf("IL_%04x",readData<long>() + position); break;
case ShortInlineBrTarget:
printf("IL_%04x",readData<BYTE>() + position); break;
case InlineI8:
printf("%ld", readData<__int64>()); break;
case InlineMethod:
case InlineField:
case InlineType:
case InlineTok:
case InlineSig:
case InlineString:
{
long l = readData<long>();
DisassembleToken(tokenArray, l);
break;
}
case InlineSwitch:
{
long cases = readData<long>();
long *pArray = new long[cases];
long i=0;
for(i=0;i<cases;i++)
{
pArray[i] = readData<long>();
}
printf("(");
for(i=0;i<cases;i++)
{
if (i != 0)
printf(", ");
printf("IL_%04x",pArray[i] + position);
}
printf(")");
delete [] pArray;
break;
}
case ShortInlineI:
printf("%d", readData<char>()); break;
case ShortInlineR:
printf("%f", readData<float>()); break;
default: printf("Error, unexpected opcode type\n"); break;
}
printf("\n");
}
}
/*static*/ SIZE_T DebuggerFunction::Disassemble(BOOL native,
SIZE_T offset,
BYTE *codeStart,
BYTE *codeEnd,
WCHAR *buffer,
BOOL noAddress,
DebuggerModule *module,
BYTE *ilCode)
{
SIZE_T ret;
if (!native)
{
//
// Write the address
//
swprintf(buffer, L"[IL:%.4x] ", offset);
buffer += wcslen(buffer);
//
// Read next opcode
//
BYTE *ip = codeStart + offset;
DWORD opcode;
BYTE *prevIP = ip;
ip = (BYTE *) ReadNextOpcode(ip, &opcode);
//
// Get the end of the instruction
//
BYTE *nextIP = (BYTE *) SkipIP(ip, opcode);
BYTE *bytes = prevIP;
//
// Dump the raw value of the stream
//
while (bytes < ip)
{
swprintf(buffer, L"%.2x", *bytes++);
buffer += wcslen(buffer);
}
*buffer++ = ':';
while (bytes < nextIP)
{
swprintf(buffer, L"%.2x", *bytes++);
buffer += wcslen(buffer);
}
while (bytes++ - prevIP < 8)
{
*buffer++ = L' ';
*buffer++ = L' ';
}
//
// Print the opcode
//
swprintf(buffer, L"%s\t", opcodeName[opcode]);
buffer += wcslen(buffer);
int tokenType = operandDescription[opcode];
if (tokenType == InlineSwitch)
{
*buffer++ = L'\n';
DWORD caseCount = GET_UNALIGNED_VAL32(ip);
ip += 4;
DWORD index = 0;
while (index < caseCount)
{
swprintf(buffer, L"\t\t\t%.5d:[%.4x]\n", index,
GET_UNALIGNED_VAL16(ip));
buffer += wcslen(buffer);
index++;
ip += 4;
}
}
else if (tokenType == InlinePhi)
{
*buffer++ = L'\n';
DWORD caseCount = *(unsigned char*)ip;
ip += 1;
DWORD index = 0;
while (index < caseCount)
{
swprintf(buffer, L"\t\t\t%.5d: [%.4x]\n", index, GET_UNALIGNED_VAL16(ip));
buffer += wcslen(buffer);
index++;
ip += 2;
}
}
else if (tokenType == InlineTok || tokenType == InlineType ||
tokenType == InlineField || tokenType == InlineMethod)
{
DisassembleToken(module->GetMetaData(), GET_UNALIGNED_VAL32(ip), buffer);
buffer += wcslen(buffer);
}
else
{
DisassembleArgument(ip, ip - ilCode, tokenType, buffer);
buffer += wcslen(buffer);
}
ret = nextIP - ilCode;
}
else
{
// Write the address
if (!noAddress)
{
swprintf(buffer, L"[%.4x] ", offset);
buffer += wcslen(buffer);
}
ret = 0xffff;
}
*buffer++ = L'\n';
*buffer = L'\0';
return (ret);
}
