diff --git a/tests/regress/arm_init_input_crash.py b/tests/regress/arm_init_input_crash.py new file mode 100644 index 00000000..ecafbfd2 --- /dev/null +++ b/tests/regress/arm_init_input_crash.py @@ -0,0 +1,109 @@ +#!/usr/bin/env python +# Sample code for ARM of Unicorn. Nguyen Anh Quynh +# Python sample ported by Loi Anh Tuan +# + + +from __future__ import print_function +from unicorn import * +from unicorn.arm_const import * + + +# code to be emulated +ARM_CODE = "\x37\x00\xa0\xe3\x03\x10\x42\xe0" # mov r0, #0x37; sub r1, r2, r3 +THUMB_CODE = "\x83\xb0" # sub sp, #0xc +# memory address where emulation starts +ADDRESS = 0xF0000000 + + +# callback for tracing basic blocks +def hook_block(uc, address, size, user_data): + print(">>> Tracing basic block at 0x%x, block size = 0x%x" %(address, size)) + + +# callback for tracing instructions +def hook_code(uc, address, size, user_data): + print(">>> Tracing instruction at 0x%x, instruction size = %u" %(address, size)) + + +# Test ARM +def test_arm(): + print("Emulate ARM code") + try: + # Initialize emulator in ARM mode + mu = Uc(UC_ARCH_ARM, UC_MODE_ARM) + + mem_size = 2 * (1024 * 1024) + mu.mem_map(ADDRESS, mem_size) + + stack_address = ADDRESS + mem_size + stack_size = stack_address # >>> here huge memory size + mu.mem_map(stack_address, stack_size) + + # write machine code to be emulated to memory + mu.mem_write(ADDRESS, ARM_CODE) + + # initialize machine registers + mu.reg_write(UC_ARM_REG_R0, 0x1234) + mu.reg_write(UC_ARM_REG_R2, 0x6789) + mu.reg_write(UC_ARM_REG_R3, 0x3333) + + # tracing all basic blocks with customized callback + mu.hook_add(UC_HOOK_BLOCK, hook_block) + + # tracing all instructions with customized callback + mu.hook_add(UC_HOOK_CODE, hook_code) + + # emulate machine code in infinite time + mu.emu_start(ADDRESS, ADDRESS + len(ARM_CODE)) + + # now print out some registers + print(">>> Emulation done. Below is the CPU context") + + r0 = mu.reg_read(UC_ARM_REG_R0) + r1 = mu.reg_read(UC_ARM_REG_R1) + print(">>> R0 = 0x%x" %r0) + print(">>> R1 = 0x%x" %r1) + + except UcError as e: + print("ERROR: %s" % e) + + +def test_thumb(): + print("Emulate THUMB code") + try: + # Initialize emulator in thumb mode + mu = Uc(UC_ARCH_ARM, UC_MODE_THUMB) + + # map 2MB memory for this emulation + mu.mem_map(ADDRESS, 2 * 1024 * 1024) + + # write machine code to be emulated to memory + mu.mem_write(ADDRESS, THUMB_CODE) + + # initialize machine registers + mu.reg_write(UC_ARM_REG_SP, 0x1234) + + # tracing all basic blocks with customized callback + mu.hook_add(UC_HOOK_BLOCK, hook_block) + + # tracing all instructions with customized callback + mu.hook_add(UC_HOOK_CODE, hook_code) + + # emulate machine code in infinite time + mu.emu_start(ADDRESS, ADDRESS + len(THUMB_CODE)) + + # now print out some registers + print(">>> Emulation done. Below is the CPU context") + + sp = mu.reg_read(UC_ARM_REG_SP) + print(">>> SP = 0x%x" %sp) + + except UcError as e: + print("ERROR: %s" % e) + + +if __name__ == '__main__': + test_arm() + print("=" * 20) + test_thumb()