92 lines
2.9 KiB
Java
92 lines
2.9 KiB
Java
/*
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Java bindings for the Unicorn Emulator Engine
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Copyright(c) 2023 Robert Xiao
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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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/* Sample code to demonstrate how to emulate S390X code */
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package samples;
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import unicorn.*;
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public class Sample_ppc implements UnicornConst, PpcConst {
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/** code to be emulated:
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* {@code add r26, r6, r3}
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*/
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private static final byte[] CODE = Utils.hexToBytes("7F461A14");
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// memory address where emulation starts
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private static final long ADDRESS = 0x10000;
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private static final BlockHook hook_block =
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(uc, address, size, user_data) -> {
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System.out.format(
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">>> Tracing basic block at 0x%x, block size = 0x%x\n",
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address, size);
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};
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private static final CodeHook hook_code =
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(uc, address, size, 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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public static void test_ppc() {
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long r3 = 0x1234; // R3 register
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long r6 = 0x6789; // R6 register
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long r26 = 0x8877; // R26 register (result)
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System.out.println("Emulate PPC code");
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Unicorn uc =
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new Unicorn(UC_ARCH_PPC, UC_MODE_PPC32 | UC_MODE_BIG_ENDIAN);
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// map 2MB memory for this emulation
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uc.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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uc.mem_write(ADDRESS, CODE);
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// initialize machine registers
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uc.reg_write(UC_PPC_REG_3, r3);
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uc.reg_write(UC_PPC_REG_6, r6);
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uc.reg_write(UC_PPC_REG_26, r26);
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// tracing all basic blocks with customized callback
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uc.hook_add(hook_block, 1, 0, null);
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// tracing one instruction at ADDRESS with customized callback
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uc.hook_add(hook_code, ADDRESS, ADDRESS + CODE.length, 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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uc.emu_start(ADDRESS, ADDRESS + CODE.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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System.out.format(">>> r26 = 0x%x\n", uc.reg_read(UC_PPC_REG_26));
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}
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public static final void main(String[] args) {
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test_ppc();
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}
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}
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