internal void OnBranch(uint aAddress, TArmInstructionSet aInstructionSet, TArmExceptionType aExceptionType, TETMBranchType aBranchType)
{
if (Branch != null)
{
ETMBranch branch = new ETMBranch(new SymAddress(aAddress), iBranchCounter, aBranchType, aInstructionSet, aExceptionType);
// Try to find a symbol
SymbolCollection col = null;
Symbol sym = LookUpSymbol(aAddress, out col);
//
if (sym != null)
{
branch.Symbol = sym;
}
else if (col != null)
{
branch.SymbolText = string.Format("Unknown Symbol from \'{0}\'", col.FileName.FileNameInHost);
}
// Cascade event
Branch(branch);
}
++iBranchCounter;
}
private void ETB_Branch(ETMBranch aBranch)
{
if (iCurrentStack != null)
{
iCurrentStack.HandleBranch(aBranch);
}
}
internal void HandleBranch(ETMBranch aBranch)
{
TETBStackEntry last = LastEntry;
if (last != null)
{
TETBStackEntry entry = new TETBStackEntry(aBranch);
//
if (last.SymbolAddress == entry.SymbolAddress)
{
if (entry.SymbolOffset > last.SymbolOffset)
{
// Internal branch? E.g. if statement, or loop?
}
else
{
PushBranch(entry);
}
}
else if (aBranch.SymbolAddressOffset == 0 && aBranch.Symbol != null)
{
// Guess: calling a new function
PushBranch(entry);
}
else
{
bool save = true;
// Check if we have branched back to an earlier function without
// popping back through the call stack
int count = iEntries.Count;
for (int i = count - 2; i >= 0; i--)
{
last = iEntries[i];
if (last.SymbolAddress == entry.SymbolAddress)
{
if (entry.SymbolOffset > last.SymbolOffset)
{
// We appear to have jumped back to a calling function - so
// discard later items on stack.
int deleteCount = count - i - 1;
iEntries.RemoveRange(i + 1, deleteCount);
save = false;
break;
}
}
}
if (save)
{
PushBranch(entry);
}
}
}
else
{
PushBranch(aBranch);
}
}
private void PushBranch(ETMBranch aBranch)
{
TETBStackEntry entry = new TETBStackEntry(aBranch);
PushBranch(entry);
}
public TETBStackEntry(ETMBranch aBranch)
{
iBranch = aBranch;
}
