unicorn/bindings/java/samples/Sample_x86_mmr.java

/*

Java bindings for the Unicorn Emulator Engine

Copyright(c) 2016 Chris Eagle

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.

*/

/* Sample code to demonstrate how to register read/write API */

import unicorn.*;

public class Sample_x86_mmr {

   static void test_x86_mmr() {
       // Initialize emulator in X86-32bit mode
       Unicorn uc;
       try {
         uc = new Unicorn(Unicorn.UC_ARCH_X86, Unicorn.UC_MODE_32);
       } catch (UnicornException uex) {
          System.out.println("Failed on uc_open() with error returned: " + uex);
          return;
       }
   
       // map 4k 
       uc.mem_map(0x400000, 0x1000, Unicorn.UC_PROT_ALL);

       X86_MMR ldtr1 = new X86_MMR(0x1111111122222222L, 0x33333333, 0x44444444, (short)0x5555);
       X86_MMR ldtr2;
       X86_MMR gdtr1 = new X86_MMR(0x6666666677777777L, 0x88888888, 0x99999999, (short)0xaaaa);
       X86_MMR gdtr2, gdtr3, gdtr4;

       int eax;
       
       // initialize machine registers

       uc.reg_write(Unicorn.UC_X86_REG_LDTR, ldtr1);       
       uc.reg_write(Unicorn.UC_X86_REG_GDTR, gdtr1);
       uc.reg_write(Unicorn.UC_X86_REG_EAX, new Long(0xdddddddd));
      
       // read the registers back out   
       eax = (int)((Long)uc.reg_read(Unicorn.UC_X86_REG_EAX)).longValue();
       ldtr2 = (X86_MMR)uc.reg_read(Unicorn.UC_X86_REG_LDTR);
       gdtr2 = (X86_MMR)uc.reg_read(Unicorn.UC_X86_REG_GDTR);

       System.out.printf(">>> EAX = 0x%x\n", eax);

       System.out.printf(">>> LDTR.base = 0x%x\n", ldtr2.base);
       System.out.printf(">>> LDTR.limit = 0x%x\n", ldtr2.limit);
       System.out.printf(">>> LDTR.flags = 0x%x\n", ldtr2.flags);
       System.out.printf(">>> LDTR.selector = 0x%x\n\n", ldtr2.selector);

       System.out.printf(">>> GDTR.base = 0x%x\n", gdtr2.base);
       System.out.printf(">>> GDTR.limit = 0x%x\n", gdtr2.limit);
   
       uc.close();
   }

   public static void main(String args[])
   {
      test_x86_mmr();
   }

}