Initial checkin of unicorn java binding

bindings/java/samples/Sample_mips.java

@@ -0,0 +1,151 @@
+/*
+
+Java bindings for the Unicorn Emulator Engine
+
+Copyright(c) 2015 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.
+
+*/
+
+/* Unicorn Emulator Engine */
+/* By Nguyen Anh Quynh, 2015 */
+
+/* Sample code to demonstrate how to emulate Mips code (big endian) */
+
+import unicorn.*;
+
+public class Sample_mips {
+
+   // code to be emulated
+   public static final byte[] MIPS_CODE_EB = {52,33,52,86};
+   public static final byte[] MIPS_CODE_EL = {86,52,33,52};
+
+   // memory address where emulation starts
+   public static final int ADDRESS = 0x10000;
+   
+   public static final long toInt(byte val[]) {
+      long res = 0;
+      for (int i = 0; i < val.length; i++) {
+         long v = val[i] & 0xff;
+         res = res + (v << (i * 8));
+      }
+      return res;
+   }
+
+   public static final byte[] toBytes(long val) {
+      byte[] res = new byte[8];
+      for (int i = 0; i < 8; i++) {
+         res[i] = (byte)(val & 0xff);
+         val >>>= 8;
+      }
+      return res;
+   }
+   
+   // callback for tracing basic blocks
+   private static class MyBlockHook implements BlockHook {
+      public void hook(Unicorn u, long address, int size, Object user_data) {
+         System.out.print(String.format(">>> Tracing basic block at 0x%x, block size = 0x%x\n", address, size));
+      }
+   }
+      
+   // callback for tracing instruction
+   private static class MyCodeHook implements CodeHook {
+      public void hook(Unicorn u, long address, int size, Object user_data) {
+         System.out.print(String.format(">>> Tracing instruction at 0x%x, instruction size = 0x%x\n", address, size));
+      }
+   }
+   
+   static void test_mips_eb()
+   {
+   
+       byte[] r1 = toBytes(0x6789);     // R1 register
+   
+       System.out.print("Emulate MIPS code (big-endian)\n");
+   
+       // Initialize emulator in MIPS mode
+       Unicorn u = new Unicorn(Unicorn.UC_ARCH_MIPS, Unicorn.UC_MODE_MIPS32 + Unicorn.UC_MODE_BIG_ENDIAN);
+   
+       // map 2MB memory for this emulation
+       u.mem_map(ADDRESS, 2 * 1024 * 1024);
+   
+       // write machine code to be emulated to memory
+       u.mem_write(ADDRESS, MIPS_CODE_EB);
+   
+       // initialize machine registers
+       u.reg_write(Unicorn.UC_MIPS_REG_1, r1);
+   
+       // tracing all basic blocks with customized callback
+       u.hook_add(new MyBlockHook(), 1, 0, null);
+   
+       // tracing one instruction at ADDRESS with customized callback
+       u.hook_add(new MyCodeHook(), ADDRESS, ADDRESS, null);
+   
+       // emulate machine code in infinite time (last param = 0), or when
+       // finishing all the code.
+       u.emu_start(ADDRESS, ADDRESS + MIPS_CODE_EB.length, 0, 0);
+   
+       // now print out some registers
+       System.out.print(">>> Emulation done. Below is the CPU context\n");
+   
+       r1 = u.reg_read(Unicorn.UC_MIPS_REG_1, 4);
+       System.out.print(String.format(">>> R1 = 0x%x\n", toInt(r1)));
+   
+       u.close();
+   }
+   
+   static void test_mips_el()
+   {
+       byte[] r1 = toBytes(0x6789);     // R1 register
+   
+       System.out.print("===========================\n");
+       System.out.print("Emulate MIPS code (little-endian)\n");
+   
+       // Initialize emulator in MIPS mode
+       Unicorn u = new Unicorn(Unicorn.UC_ARCH_MIPS, Unicorn.UC_MODE_MIPS32);
+   
+       // map 2MB memory for this emulation
+       u.mem_map(ADDRESS, 2 * 1024 * 1024);
+   
+       // write machine code to be emulated to memory
+       u.mem_write(ADDRESS, MIPS_CODE_EL);
+   
+       // initialize machine registers
+       u.reg_write(Unicorn.UC_MIPS_REG_1, r1);
+   
+       // tracing all basic blocks with customized callback
+       u.hook_add(new MyBlockHook(), 1, 0, null);
+   
+       // tracing one instruction at ADDRESS with customized callback
+       u.hook_add(new MyCodeHook(), ADDRESS, ADDRESS, null);
+   
+       // emulate machine code in infinite time (last param = 0), or when
+       // finishing all the code.
+       u.emu_start(ADDRESS, ADDRESS + MIPS_CODE_EL.length, 0, 0);
+   
+       // now print out some registers
+       System.out.print(">>> Emulation done. Below is the CPU context\n");
+   
+       r1 = u.reg_read(Unicorn.UC_MIPS_REG_1, 4);
+       System.out.print(String.format(">>> R1 = 0x%x\n", toInt(r1)));
+   
+       u.close();
+   }
+   
+   public static void main(String args[])
+   {
+       test_mips_eb();
+       test_mips_el();
+   }
+}