internal static Instruction Get(EffectiveAddress at)
{
if (null == LastAnalyzed)
{
IntPtr nativeAddress =
InteropConstants.GetExportedData(ExportedDataIdentifier.ExportedCommandId);
// TODO : Should implement a factory
LastAnalyzed = new IntelInstruction(nativeAddress);
Interactivity.Message(
"Last analyzed instruction pinned at 0x{0:X08} / 0x{0:X016}\r\n",
nativeAddress.ToInt32(), nativeAddress.ToInt64());
}
if (0 == decode_insn(at))
{
if (0 != create_insn(at)) { Interactivity.Message("Successfully created instruction at 0x{0:X08}\r\n", at); }
else { Interactivity.Message("Failed to create instruction at 0x{0:X08}\r\n", at); }
}
else { Interactivity.Message("Already existing instruction found at 0x{0:X08}\r\n", at); }
return LastAnalyzed;
}
// get the scale factor of the operand with a displacement
internal int x86_scale(IntelInstruction owner)
{
return this.hasSIB ? sib_scale : 0;
}
// get the index register of the operand with a displacement
internal int x86_index(IntelInstruction owner)
{
return this.hasSIB ? sib_index(owner) : INDEX_NONE;
}
// get the base register of the operand with a displacement
internal int x86_base(IntelInstruction owner)
{
return this.hasSIB ? this.sib_base(owner) : this.Phrase;
}
// get extended sib index
internal short sib_index(IntelInstruction owner)
{
short index = (short)((this.SpecialFlag2 >> 3) & 7);
if (0 != (owner.InstructionPrefix & IntelInstruction.REX_X)) { index |= 8; }
return index;
}
// get extended sib base
internal int sib_base(IntelInstruction owner)
{
int @base = this.SpecialFlag2 & 7;
if (0 != (owner.InstructionPrefix & IntelInstruction.REX_B)) { @base |= 8; }
return @base;
}
