diff --git a/bindings/java/samples/Sample_x86.java b/bindings/java/samples/Sample_x86.java index ce63ca83..2d0f4346 100755 --- a/bindings/java/samples/Sample_x86.java +++ b/bindings/java/samples/Sample_x86.java @@ -38,6 +38,7 @@ public class Sample_x86 { public static final byte[] X86_CODE32_JMP_INVALID = {-23,-23,-18,-18,-18,65,74}; public static final byte[] X86_CODE32_INOUT = {65,-28,63,74,-26,70,67}; public static final byte[] X86_CODE64 = {65,-68,59,-80,40,42,73,15,-55,-112,77,15,-83,-49,73,-121,-3,-112,72,-127,-46,-118,-50,119,53,72,-9,-39,77,41,-12,73,-127,-55,-10,-118,-58,83,77,-121,-19,72,15,-83,-46,73,-9,-44,72,-9,-31,77,25,-59,77,-119,-59,72,-9,-42,65,-72,79,-115,107,89,77,-121,-48,104,106,30,9,60,89}; + public static final byte[] X86_CODE16 = {0, 0}; // add byte ptr [bx + si], al // memory address where emulation starts public static final int ADDRESS = 0x1000000; @@ -585,6 +586,41 @@ public class Sample_x86 { u.close(); } + static void test_x86_16() + { + byte[] eax = toBytes(7); + byte[] ebx = toBytes(5); + byte[] esi = toBytes(6); + + System.out.print("Emulate x86 16-bit code\n"); + + // Initialize emulator in X86-16bit mode + Unicorn u = new Unicorn(Unicorn.UC_ARCH_X86, Unicorn.UC_MODE_16); + + // map 8KB memory for this emulation + u.mem_map(0, 8 * 1024); + + // write machine code to be emulated to memory + u.mem_write(0, X86_CODE16); + + // initialize machine registers + u.reg_write(Unicorn.UC_X86_REG_EAX, eax); + u.reg_write(Unicorn.UC_X86_REG_EBX, ebx); + u.reg_write(Unicorn.UC_X86_REG_ESI, esi); + + // emulate machine code in infinite time (last param = 0), or when + // finishing all the code. + u.emu_start(0, X86_CODE16.length, 0, 0); + + // now print out some registers + System.out.print(">>> Emulation done. Below is the CPU context\n"); + + // read from memory + byte[] tmp = u.mem_read(11, 1); + + u.close(); + } + public static void main(String args[]) { if (args.length == 1) { @@ -602,6 +638,10 @@ public class Sample_x86 { test_x86_64(); } + if (args[0].equals("-16")) { + test_x86_16(); + } + // test memleak if (args[0].equals("-0")) { while(true) { @@ -610,7 +650,7 @@ public class Sample_x86 { } } } else { - System.out.print("Syntax: java Sample_x86 <-32|-64>\n"); + System.out.print("Syntax: java Sample_x86 <-16|-32|-64>\n"); } }