public void TranslateIndices(IInstructionList list)
{
//Note: The base value for the program counter is the instruction address following the instruction.
if (IsSwitch)
{
int origin = _offset;
//default case offset
var def = _operands[SW_Default];
int defIndex = (int)def.Value;
def.Value = list[defIndex].Offset - origin;
//cases
var cases = (int[])_operands[SW_Cases].Value;
for (int j = 0; j < cases.Length; ++j)
{
int index = cases[j];
cases[j] = list[index].Offset - origin;
}
}
else if (IsBranch)
{
int origin = _offset + 4;
int index = BranchTargetIndex;
var op = _operands[0];
if (index >= list.Count)
{
index = list.Count - 1;
}
op.Value = list[index].Offset - origin;
}
}
public void TranslateOffsets(IInstructionList list)
{
if (IsSwitch)
{
int origin = _offset;
var def = _operands[SW_Default];
int offset = origin + (int)def.Value;
int index = list.GetOffsetIndex(offset);
list[index].IsBranchTarget = true;
def.Value = index;
var offsets = (int[])_operands[SW_Cases].Value;
for (int i = 0; i < offsets.Length; ++i)
{
offset = origin + offsets[i];
index = list.GetOffsetIndex(offset);
list[index].IsBranchTarget = true;
offsets[i] = index;
}
}
else if (IsBranch)
{
var op = _operands[0];
int offset = _offset + 4 + (int)op.Value;
int index = list.GetOffsetIndex(offset);
list[index].IsBranchTarget = true;
op.Value = index;
}
}
private static int GetOffsetIndex(IInstructionList code, int offset)
{
int i = code.GetOffsetIndex(offset);
if (i < 0)
{
throw Errors.ABC.InvalidBranchOffset.CreateException();
}
return(i);
}
public void TranslateOffsets(IInstructionList list)
{
if (IsSwitch)
{
var offsets = (int[])Value;
for (int j = 0; j < offsets.Length; ++j)
{
int index = list.GetOffsetIndex(offsets[j]);
list[index].IsBranchTarget = true;
offsets[j] = index;
}
}
else if (IsBranch)
{
int index = list.GetOffsetIndex((int)Value);
list[index].IsBranchTarget = true;
Value = index;
}
}
private HandlerBlock CreateHandlerBlock(IMethod method, IMethodContext context, IInstructionList code, SEHBlock block)
{
switch (block.Type)
{
case SEHFlags.Catch:
{
int token = block.Value;
var type = context.ResolveType(method, token);
if (!HasGenericExceptions && type.IsGenericContext())
{
_genericFlags |= GenericFlags.HasGenericExceptions;
}
var h = new HandlerBlock(BlockType.Catch)
{
ExceptionType = type
};
return(h);
}
case SEHFlags.Filter:
{
var h = new HandlerBlock(BlockType.Filter)
{
FilterIndex = code.GetOffsetIndex(block.Value)
};
return(h);
}
case SEHFlags.Finally:
return(new HandlerBlock(BlockType.Finally));
case SEHFlags.Fault:
return(new HandlerBlock(BlockType.Fault));
default:
throw new IndexOutOfRangeException();
}
}
