/*
JPC: An x86 PC Hardware Emulator for a pure Java Virtual Machine
Copyright (C) 2012-2013 Ian Preston
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2 as published by
the Free Software Foundation.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Details (including contact information) can be found at:
jpc.sourceforge.net
or the developer website
sourceforge.net/projects/jpc/
End of licence header
*/
package org.jpc.emulator.execution.opcodes.rm;
import org.jpc.emulator.execution.*;
import org.jpc.emulator.execution.decoder.*;
import org.jpc.emulator.processor.*;
import org.jpc.emulator.processor.fpu64.*;
import static org.jpc.emulator.processor.Processor.*;
public class frstor_o16_M extends Executable
{
final Pointer op1;
public frstor_o16_M(int blockStart, int eip, int prefices, PeekableInputStream input)
{
super(blockStart, eip);
int modrm = input.readU8();
op1 = Modrm.getPointer(prefices, modrm, input);
}
public Branch execute(Processor cpu)
{
System.out.println("Warning: Using incomplete opcode: FRSTOR_94");
int addr = op1.get(cpu);
cpu.fpu.setControl(cpu.linearMemory.getWord(addr));
cpu.fpu.setStatus(cpu.linearMemory.getWord(addr+2));
cpu.fpu.setTagWord(cpu.linearMemory.getWord(addr+4));
//cpu.linearMemory.setWord(addr + 6, (short) 0 /* cpu.fpu.getIP() offset*/);
//cpu.linearMemory.setWord(addr + 8, (short) 0 /* (selector & 0xFFFF)*/);
//cpu.linearMemory.setWord(addr + 10, (short) 0 /* operand pntr offset*/);
//cpu.linearMemory.setWord(addr + 12, (short) 0 /* operand pntr selector & 0xFFFF*/);
//for (int i = 0; i < 8; i++) {
// byte[] extended = FpuState64.doubleToExtended(fpu.ST(i), false /* this is WRONG!!!!!!! */);
// for (int j = 0; j < 10; j++)
// seg0.setByte(addr0 + 14 + j + (10 * i), extended[j]);
//}
return Branch.None;
}
public boolean isBranch()
{
return false;
}
public String toString()
{
return this.getClass().getName();
}
}