mirror of
https://github.com/yuzu-emu/unicorn.git
synced 2024-10-19 21:18:17 +02:00
107 lines
2.8 KiB
Ruby
107 lines
2.8 KiB
Ruby
#!/usr/bin/env ruby
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require 'unicorn'
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require 'unicorn/arm_const'
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include Unicorn
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# code to be emulated
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ARM_CODE = "\x37\x00\xa0\xe3\x03\x10\x42\xe0" # mov r0, #0x37; sub r1, r2, r3
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THUMB_CODE = "\x83\xb0" # 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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$hook_block = Proc.new do |uc, address, size, user_data|
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puts(">>> Tracing basic block at 0x%x, block size = 0x%x" % [address, size])
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end
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# callback for tracing instructions
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$hook_code = Proc.new do |uc, address, size, user_data|
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puts(">>> Tracing instruction at 0x%x, instruction size = %u" % [address, size])
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end
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# Test ARM
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def test_arm()
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puts("Emulate ARM code")
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begin
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# Initialize emulator in ARM mode
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mu = Uc.new UC_ARCH_ARM, UC_MODE_ARM
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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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# 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 + ARM_CODE.bytesize)
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# now print out some registers
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puts(">>> 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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puts(">>> R0 = 0x%x" % r0)
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puts(">>> R1 = 0x%x" % r1)
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rescue UcError => e
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puts("ERROR: %s" % e)
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end
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end
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def test_thumb()
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puts("Emulate THUMB code")
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begin
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# Initialize emulator in thumb mode
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mu = Uc.new UC_ARCH_ARM, UC_MODE_THUMB
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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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mu.emu_start(ADDRESS | 1, ADDRESS + THUMB_CODE.bytesize)
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# now print out some registers
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puts(">>> Emulation done. Below is the CPU context")
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sp = mu.reg_read(UC_ARM_REG_SP)
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puts(">>> SP = 0x%x" % sp)
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rescue UcError => e
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puts("ERROR: %s" % e)
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end
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end
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test_arm()
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puts("=" * 20)
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test_thumb()
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