64 lines
1.6 KiB
Python
64 lines
1.6 KiB
Python
#!/usr/bin/env python
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# Sample code for S390x of Unicorn.
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from unicorn import *
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from unicorn.s390x_const import *
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# lr %r2, %r3
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S390X_CODE = b"\x18\x23"
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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 RISCV
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def test_s390x():
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print("Emulate S390X code")
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try:
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# Initialize emulator in big endian mode
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mu = Uc(UC_ARCH_S390X, 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, S390X_CODE)
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# initialize machine registers
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mu.reg_write(UC_S390X_REG_R3, 0x7890)
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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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mu.emu_start(ADDRESS, ADDRESS + len(S390X_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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r2 = mu.reg_read(UC_S390X_REG_R2)
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r3 = mu.reg_read(UC_S390X_REG_R3)
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print(">>> R2 = 0x%x" % r2)
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print(">>> R3 = 0x%x" % r3)
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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_s390x()
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