| public SetRegisters ( Registers registers ) : void | ||
| registers | Registers | |
| return | void | |
internal override void Hack_ReturnNull(Inferior inferior)
{
Registers regs = inferior.GetRegisters ();
TargetAddress rsp = new TargetAddress (
inferior.AddressDomain, regs [(int) X86_Register.RSP].GetValue ());
TargetAddress rip = inferior.ReadAddress (rsp);
rsp += TargetAddressSize;
regs [(int) X86_Register.RIP].SetValue (rip);
regs [(int) X86_Register.RSP].SetValue (rsp);
regs [(int) X86_Register.RAX].SetValue (TargetAddress.Null);
inferior.SetRegisters (regs);
}
public override bool InterpretInstruction(Inferior inferior)
{
switch (InstructionType) {
case Type.IndirectJump:
case Type.Jump: {
TargetAddress target = GetEffectiveAddress (inferior);
Registers regs = inferior.GetRegisters ();
regs [(int) X86_Register.RIP].SetValue (target);
inferior.SetRegisters (regs);
return true;
}
case Type.IndirectCall:
case Type.Call: {
TargetAddress target = GetEffectiveAddress (inferior);
Registers regs = inferior.GetRegisters ();
TargetAddress rip = new TargetAddress (
inferior.AddressDomain, regs [(int) X86_Register.RIP].Value);
TargetAddress rsp = new TargetAddress (
inferior.AddressDomain, regs [(int) X86_Register.RSP].Value);
inferior.WriteAddress (rsp - 8, rip + InstructionSize);
regs [(int) X86_Register.RSP].SetValue (rsp - 8);
regs [(int) X86_Register.RIP].SetValue (target);
inferior.SetRegisters (regs);
return true;
}
case Type.Ret: {
Registers regs = inferior.GetRegisters ();
TargetAddress rsp = new TargetAddress (
inferior.AddressDomain, regs [(int) X86_Register.RSP].Value);
TargetAddress rip = inferior.ReadAddress (rsp);
rsp += 8 + Displacement;
regs [(int) X86_Register.RSP].SetValue (rsp);
regs [(int) X86_Register.RIP].SetValue (rip);
inferior.SetRegisters (regs);
return true;
}
case Type.Interpretable: {
Registers regs = inferior.GetRegisters ();
TargetAddress rsp = new TargetAddress (
inferior.AddressDomain, regs [(int) X86_Register.RSP].Value);
TargetAddress rbp = new TargetAddress (
inferior.AddressDomain, regs [(int) X86_Register.RBP].Value);
TargetAddress rip = new TargetAddress (
inferior.AddressDomain, regs [(int) X86_Register.RIP].Value);
if (Code [0] == 0x55) /* push %rbp */ {
inferior.WriteAddress (rsp - 8, rbp);
regs [(int) X86_Register.RSP].SetValue (rsp - 8);
regs [(int) X86_Register.RIP].SetValue (rip + 1);
inferior.SetRegisters (regs);
return true;
}
return false;
}
default:
return false;
}
}
