public static TextPositionTuple GetTextPositionOfFrame(PathConverter converter, IDebugStackFrame2 frame)
{
IDebugDocumentContext2 documentContext;
var source = new Source();
if (frame.GetDocumentContext(out documentContext) == 0 &&
documentContext != null)
{
var beginPosition = new TEXT_POSITION[1];
var endPosition = new TEXT_POSITION[1];
documentContext.GetStatementRange(beginPosition, endPosition);
string filePath;
documentContext.GetName(enum_GETNAME_TYPE.GN_FILENAME, out filePath);
string convertedFilePath = converter.ConvertDebuggerPathToClient(filePath);
// save the filename as we need it in any case
source.Name = Path.GetFileName(convertedFilePath);
// we have debug info but do we actually have the source code?
if (File.Exists(convertedFilePath))
{
source.Path = convertedFilePath;
int srcline = converter.ConvertDebuggerLineToClient((int)beginPosition[0].dwLine);
int srccolumn = unchecked ((int)(beginPosition[0].dwColumn + 1));
return(new TextPositionTuple(source, srcline, srccolumn));
}
}
// this frame is lacking source code
source.Name = Path.ChangeExtension(source.Name, ".s") ?? "???";
source.Path = null;
source.Origin = "disassembly";
ulong startAddress;
IDebugCodeContext2 codeContext;
if (frame.GetCodeContext(out codeContext) != HRConstants.S_OK)
{
return(null); // we couldn't even find the current instruction, something's really wrong
}
var cinfos = new CONTEXT_INFO[1];
codeContext.GetInfo(enum_CONTEXT_INFO_FIELDS.CIF_ALLFIELDS, cinfos);
DisassembledRange disRange;
startAddress = (ulong)Convert.ToInt64(cinfos[0].bstrAddress, 16);
int idx = DisasmRangesDict.FindUpperBound(startAddress);
bool foundIt = false;
int column = 0;
int line = 0;
if (idx > 0)
{
var kv = DisasmRangesDict.TryGet(idx - 1).Value;
if (startAddress >= kv.Key && startAddress <= kv.Value.endAddress)
{
disRange = kv.Value;
source.SourceReference = disRange.sourceReference;
line = kv.Value.dasmData.FirstIndexWhere(d => (ulong)Convert.ToInt64(d.bstrAddress, 16) >= startAddress) ?? 0;
++line;
column = 0;
foundIt = true;
}
}
if (!foundIt)
{
IDebugThread2 thread;
frame.GetThread(out thread);
IDebugProgram2 program;
thread.GetProgram(out program);
IDebugDisassemblyStream2 disasmStream;
program.GetDisassemblyStream(enum_DISASSEMBLY_STREAM_SCOPE.DSS_FUNCTION, codeContext, out disasmStream);
uint instructionsRead;
var dasmData = new DisassemblyData[100];
if (disasmStream.Read(100, enum_DISASSEMBLY_STREAM_FIELDS.DSF_ALL, out instructionsRead, dasmData) == HRConstants.S_OK)
{
System.Array.Resize(ref dasmData, (int)instructionsRead);
source.SourceReference = ++lastSourceReference;
DisasmRangesDict.Add(startAddress, new DisassembledRange()
{
sourceReference = lastSourceReference,
endAddress = (ulong)Convert.ToInt64(dasmData.Last().bstrAddress, 16),
dasmData = dasmData
});
line = 1;
column = 0;
}
}
return(new TextPositionTuple(source, line, column));
}