135 lines
4.4 KiB
Java
135 lines
4.4 KiB
Java
/*
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Java bindings for the Unicorn Emulator Engine
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Copyright(c) 2015 Chris Eagle
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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version 2 as published by the Free Software Foundation.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/* Unicorn Emulator Engine */
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/* By Nguyen Anh Quynh, 2015 */
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/* Sample code to demonstrate how to emulate Mips code (big endian) */
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package samples;
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import unicorn.*;
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public class Sample_mips implements UnicornConst, MipsConst {
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// code to be emulated
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public static final byte[] MIPS_CODE_EB = { 52, 33, 52, 86 }; // ori $at, $at, 0x3456
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public static final byte[] MIPS_CODE_EL = { 86, 52, 33, 52 }; // ori $at, $at, 0x3456
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// memory address where emulation starts
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public static final int ADDRESS = 0x10000;
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// callback for tracing basic blocks
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private static class MyBlockHook implements BlockHook {
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public void hook(Unicorn u, long address, int size, Object user_data) {
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System.out.format(
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">>> Tracing basic block at 0x%x, block size = 0x%x\n", address,
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size);
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}
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}
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// callback for tracing instruction
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private static class MyCodeHook implements CodeHook {
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public void hook(Unicorn u, long address, int size, Object user_data) {
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System.out.format(
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">>> Tracing instruction at 0x%x, instruction size = 0x%x\n",
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address, size);
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}
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}
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public static void test_mips_eb() {
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long r1 = 0x6789L; // R1 register
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System.out.println("Emulate MIPS code (big-endian)");
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// Initialize emulator in MIPS mode
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Unicorn u =
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new Unicorn(UC_ARCH_MIPS, UC_MODE_MIPS32 + UC_MODE_BIG_ENDIAN);
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// map 2MB memory for this emulation
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u.mem_map(ADDRESS, 2 * 1024 * 1024, UC_PROT_ALL);
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// write machine code to be emulated to memory
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u.mem_write(ADDRESS, MIPS_CODE_EB);
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// initialize machine registers
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u.reg_write(UC_MIPS_REG_1, r1);
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// tracing all basic blocks with customized callback
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u.hook_add(new MyBlockHook(), 1, 0, null);
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// tracing one instruction at ADDRESS with customized callback
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u.hook_add(new MyCodeHook(), ADDRESS, ADDRESS, null);
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// emulate machine code in infinite time (last param = 0), or when
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// finishing all the code.
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u.emu_start(ADDRESS, ADDRESS + MIPS_CODE_EB.length, 0, 0);
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// now print out some registers
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System.out.println(">>> Emulation done. Below is the CPU context");
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r1 = u.reg_read(UC_MIPS_REG_1);
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System.out.format(">>> R1 = 0x%x\n", r1);
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}
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public static void test_mips_el() {
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long r1 = 0x6789L; // R1 register
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System.out.println("Emulate MIPS code (little-endian)");
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// Initialize emulator in MIPS mode
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Unicorn u = new Unicorn(UC_ARCH_MIPS,
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UC_MODE_MIPS32 + UC_MODE_LITTLE_ENDIAN);
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// map 2MB memory for this emulation
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u.mem_map(ADDRESS, 2 * 1024 * 1024, UC_PROT_ALL);
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// write machine code to be emulated to memory
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u.mem_write(ADDRESS, MIPS_CODE_EL);
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// initialize machine registers
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u.reg_write(UC_MIPS_REG_1, r1);
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// tracing all basic blocks with customized callback
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u.hook_add(new MyBlockHook(), 1, 0, null);
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// tracing one instruction at ADDRESS with customized callback
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u.hook_add(new MyCodeHook(), ADDRESS, ADDRESS, null);
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// emulate machine code in infinite time (last param = 0), or when
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// finishing all the code.
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u.emu_start(ADDRESS, ADDRESS + MIPS_CODE_EL.length, 0, 0);
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// now print out some registers
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System.out.println(">>> Emulation done. Below is the CPU context");
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r1 = u.reg_read(UC_MIPS_REG_1);
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System.out.format(">>> R1 = 0x%x\n", r1);
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}
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public static void main(String args[]) {
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test_mips_eb();
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System.out.println("===========================");
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test_mips_el();
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}
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}
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