unicorn/bindings/java/samples/Sample_sparc.java
2015-08-25 03:21:47 -07:00

116 lines
3.6 KiB
Java
Executable File

/*
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 Sparc code */
import unicorn.*;
public class Sample_sparc {
// code to be emulated
public static final byte[] SPARC_CODE = {-122,0,64,2};
//public static final byte[] SPARC_CODE = {-69,112,0,0}; //illegal code
// 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_sparc()
{
byte[] g1 = toBytes(0x1230); // G1 register
byte[] g2 = toBytes(0x6789); // G2 register
byte[] g3 = toBytes(0x5555); // G3 register
System.out.print("Emulate SPARC code\n");
// Initialize emulator in Sparc mode
Unicorn u = new Unicorn(Unicorn.UC_ARCH_SPARC, 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, SPARC_CODE);
// initialize machine registers
u.reg_write(Unicorn.UC_SPARC_REG_G1, g1);
u.reg_write(Unicorn.UC_SPARC_REG_G2, g2);
u.reg_write(Unicorn.UC_SPARC_REG_G3, g3);
// 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 + SPARC_CODE.length, 0, 0);
// now print out some registers
System.out.print(">>> Emulation done. Below is the CPU context\n");
g3 = u.reg_read(Unicorn.UC_SPARC_REG_G3, 4);
System.out.print(String.format(">>> G3 = 0x%x\n", toInt(g3)));
u.close();
}
public static void main(String args[])
{
test_sparc();
}
}