internal unsafe static StackFrame [] GetCallingStack()
{
uint bp, ip, count = 0;
StackFrame [] stackFrame = null;
// 1st step: count the stack frames
// 2nd step: create the array and find the method boundary for every stack frame
for (int step = 0; step < 2; step++)
{
// Get the current IP
Asm.CALL(GET_IP);
Asm.LABEL(GET_IP);
Asm.POP(R32.EAX);
Asm.MOV(&ip, R32.EAX);
// Get the current BP
Asm.MOV(&bp, R32.EBP);
if (step == 1)
{
stackFrame = new StackFrame [count];
}
count = 0;
do
{
if (step == 1)
{
MethodBoundary entry = null;
for (int i = 0; i < Runtime.MethodBoundaries.Length; i++)
{
if (ip >= (uint)Runtime.MethodBoundaries [i].Begin &&
ip < (uint)Runtime.MethodBoundaries [i].End)
{
entry = Runtime.MethodBoundaries [i];
break;
}
}
stackFrame [count] = new StackFrame((void *)ip, (void *)bp, entry);
}
count++;
// Get the next IP
Asm.MOV(R32.EBX, &bp);
Asm.MOV(R32.EAX, new DWordMemory(null, R32.EBX, null, 0, 4));
Asm.MOV(&ip, R32.EAX);
// Get the next BP
Asm.MOV(R32.EAX, new DWordMemory(null, R32.EBX, null, 0));
Asm.MOV(&bp, R32.EAX);
} while (bp != 0);
}
return(stackFrame);
}
public StackFrame(void *ip, void *bp, MethodBoundary methodBoundary)
{
this.IP = ip;
this.BP = bp;
this.MethodBoundary = methodBoundary;
if (methodBoundary.ExceptionHandlingClauses != null)
{
this.IgnoreMethodBoundaryClause = new bool [methodBoundary.ExceptionHandlingClauses.Length];
for (int i = 0; i < this.IgnoreMethodBoundaryClause.Length; i++)
{
this.IgnoreMethodBoundaryClause [i] = false;
}
}
else
{
this.IgnoreMethodBoundaryClause = new bool [0];
}
}
