mirror of
https://github.com/yuzu-emu/unicorn.git
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105 lines
3.1 KiB
Python
Executable File
105 lines
3.1 KiB
Python
Executable File
#!/usr/bin/env python
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# Sample code for ARM big endian of Unicorn. zhangwm <rustydaar@gmail.com>
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from __future__ import print_function
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from unicorn import *
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from unicorn.arm_const import *
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# code to be emulated
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ARM_CODE = b"\xe3\xa0\x00\x37\xe0\x42\x10\x03" # mov r0, #0x37; sub r1, r2, r3
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THUMB_CODE = b"\xb0\x83" # sub sp, #0xc
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# memory address where emulation starts
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ADDRESS = 0x10000
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# callback for tracing basic blocks
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def hook_block(uc, address, size, user_data):
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print(">>> Tracing basic block at 0x%x, block size = 0x%x" %(address, size))
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# callback for tracing instructions
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def hook_code(uc, address, size, user_data):
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print(">>> Tracing instruction at 0x%x, instruction size = 0x%x" %(address, size))
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# Test ARM
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def test_arm():
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print("Emulate ARM Big-Endian code")
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try:
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# Initialize emulator in ARM mode
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mu = Uc(UC_ARCH_ARM, UC_MODE_ARM | UC_MODE_BIG_ENDIAN)
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# map 2MB memory for this emulation
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mu.mem_map(ADDRESS, 2 * 1024 * 1024)
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# write machine code to be emulated to memory
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mu.mem_write(ADDRESS, ARM_CODE)
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# initialize machine registers
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mu.reg_write(UC_ARM_REG_R0, 0x1234)
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mu.reg_write(UC_ARM_REG_R2, 0x6789)
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mu.reg_write(UC_ARM_REG_R3, 0x3333)
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mu.reg_write(UC_ARM_REG_APSR, 0xFFFFFFFF) #All application flags turned on
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# tracing all basic blocks with customized callback
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mu.hook_add(UC_HOOK_BLOCK, hook_block)
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# tracing one instruction at ADDRESS with customized callback
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mu.hook_add(UC_HOOK_CODE, hook_code, begin=ADDRESS, end=ADDRESS)
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# emulate machine code in infinite time
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mu.emu_start(ADDRESS, ADDRESS + len(ARM_CODE))
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# now print out some registers
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print(">>> Emulation done. Below is the CPU context")
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r0 = mu.reg_read(UC_ARM_REG_R0)
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r1 = mu.reg_read(UC_ARM_REG_R1)
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print(">>> R0 = 0x%x" %r0)
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print(">>> R1 = 0x%x" %r1)
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except UcError as e:
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print("ERROR: %s" % e)
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def test_thumb():
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print("Emulate THUMB code")
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try:
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# Initialize emulator in thumb mode
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mu = Uc(UC_ARCH_ARM, UC_MODE_THUMB | UC_MODE_BIG_ENDIAN)
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# map 2MB memory for this emulation
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mu.mem_map(ADDRESS, 2 * 1024 * 1024)
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# write machine code to be emulated to memory
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mu.mem_write(ADDRESS, THUMB_CODE)
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# initialize machine registers
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mu.reg_write(UC_ARM_REG_SP, 0x1234)
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# tracing all basic blocks with customized callback
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mu.hook_add(UC_HOOK_BLOCK, hook_block)
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# tracing all instructions with customized callback
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mu.hook_add(UC_HOOK_CODE, hook_code)
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# emulate machine code in infinite time
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# Note we start at ADDRESS | 1 to indicate THUMB mode.
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mu.emu_start(ADDRESS | 1, ADDRESS + len(THUMB_CODE))
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# now print out some registers
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print(">>> Emulation done. Below is the CPU context")
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sp = mu.reg_read(UC_ARM_REG_SP)
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print(">>> SP = 0x%x" %sp)
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except UcError as e:
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print("ERROR: %s" % e)
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if __name__ == '__main__':
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test_arm()
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print("=" * 26)
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test_thumb()
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