public ProcedureBase GetTrampolineDestination(ImageReader rdr, IRewriterHost host)
{
var dasm = new PowerPcDisassembler(this, rdr, WordWidth);
return GetTrampolineDestination(dasm, host);
}
public override ProcedureBase GetTrampolineDestination(ImageReader rdr, IRewriterHost host)
{
var dasm = new PowerPcDisassembler(
(PowerPcArchitecture64) Architecture,
rdr,
PrimitiveType.Word64);
PowerPcInstruction instr;
ImmediateOperand immOp;
MemoryOperand memOp;
//addi r12,r0,0000
instr = dasm.DisassembleInstruction();
if (instr.Opcode != Opcode.addi)
return null;
//oris r12,r12,0006
instr = dasm.DisassembleInstruction();
if (instr.Opcode != Opcode.oris)
return null;
immOp = (ImmediateOperand) instr.op3;
uint aFuncDesc = immOp.Value.ToUInt32() << 16;
//lwz r12,nnnn(r12)
instr = dasm.DisassembleInstruction();
if (instr.Opcode != Opcode.lwz)
return null;
memOp = (MemoryOperand)instr.op2;
int offset = memOp.Offset.ToInt32();
aFuncDesc = (uint)(aFuncDesc + offset);
//std r2,40(r1)
instr = dasm.DisassembleInstruction();
if (instr.Opcode != Opcode.std)
return null;
//lwz r0,0(r12)
// Have a pointer to a trampoline
instr = dasm.DisassembleInstruction();
if (instr.Opcode != Opcode.lwz)
return null;
//lwz r2,4(r12)
instr = dasm.DisassembleInstruction();
if (instr.Opcode != Opcode.lwz)
return null;
// mtctr r0
instr = dasm.DisassembleInstruction();
if (instr.Opcode != Opcode.mtctr)
return null;
// bcctr 14,00
instr = dasm.DisassembleInstruction();
if (instr.Opcode != Opcode.bcctr)
return null;
// Read the function pointer from the function descriptor.
offset = (int)aFuncDesc - (int)rdr.Address.ToUInt32();
rdr.Offset = rdr.Offset + offset;
var aFn = rdr.ReadUInt32();
return null;
}
public override ProcedureBase GetTrampolineDestination(ImageReader rdr, IRewriterHost host)
{
var dasm = new PowerPcDisassembler(
(PowerPcArchitecture64)Architecture,
rdr,
PrimitiveType.Word64);
PowerPcInstruction instr;
ImmediateOperand immOp;
MemoryOperand memOp;
//addi r12,r0,0000
instr = dasm.DisassembleInstruction();
if (instr.Opcode != Opcode.addi)
{
return(null);
}
//oris r12,r12,0006
instr = dasm.DisassembleInstruction();
if (instr.Opcode != Opcode.oris)
{
return(null);
}
immOp = (ImmediateOperand)instr.op3;
uint aFuncDesc = immOp.Value.ToUInt32() << 16;
//lwz r12,nnnn(r12)
instr = dasm.DisassembleInstruction();
if (instr.Opcode != Opcode.lwz)
{
return(null);
}
memOp = (MemoryOperand)instr.op2;
int offset = memOp.Offset.ToInt32();
aFuncDesc = (uint)(aFuncDesc + offset);
//std r2,40(r1)
instr = dasm.DisassembleInstruction();
if (instr.Opcode != Opcode.std)
{
return(null);
}
//lwz r0,0(r12)
// Have a pointer to a trampoline
instr = dasm.DisassembleInstruction();
if (instr.Opcode != Opcode.lwz)
{
return(null);
}
//lwz r2,4(r12)
instr = dasm.DisassembleInstruction();
if (instr.Opcode != Opcode.lwz)
{
return(null);
}
// mtctr r0
instr = dasm.DisassembleInstruction();
if (instr.Opcode != Opcode.mtctr)
{
return(null);
}
// bcctr 14,00
instr = dasm.DisassembleInstruction();
if (instr.Opcode != Opcode.bcctr)
{
return(null);
}
// Read the function pointer from the function descriptor.
offset = (int)aFuncDesc - (int)rdr.Address.ToUInt32();
rdr.Offset = (ulong)(((long)rdr.Offset) + offset);
var aFn = rdr.ReadUInt32();
return(null);
}
