mirror of
https://github.com/yuzu-emu/unicorn
synced 2024-11-24 13:48:14 +00:00
13007eb12a
* renamed gem unicorn to unicorn-engine * renamed modules to unicornengine * renamed Module Unicorn to UnicornEngine and the gem unicorn-engine to unicornengine * unicornengine -> unicorn_engine
60 lines
1.5 KiB
Ruby
60 lines
1.5 KiB
Ruby
#!/usr/bin/env ruby
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require 'unicorn_engine'
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require 'unicorn_engine/x86_const'
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require 'weakref'
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include UnicornEngine
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X86_CODE32 = "\x41" # INC ecx; DEC edx
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# memory address where emulation starts
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ADDRESS = 0x1000000
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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("proc was run")
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end
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hook_code_weak = WeakRef.new hook_code
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begin
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# Initialize emulator in X86-32bit mode
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mu = Uc.new UC_ARCH_X86, UC_MODE_32
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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, X86_CODE32)
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# initialize machine registers
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mu.reg_write(UC_X86_REG_ECX, 0x1234)
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mu.reg_write(UC_X86_REG_EDX, 0x7890)
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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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hook_code = nil # erase reference to proc
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GC.start() # force garbage collection to test if proc is garbage collected
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# emulate machine code in infinite time
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mu.emu_start(ADDRESS, ADDRESS + X86_CODE32.bytesize)
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mu = nil # erase reference to Uc because apparently it doesn't go out of scope after this?
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rescue UcError => e
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puts("ERROR: %s" % e)
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exit 1
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rescue NoMethodError => e
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puts("proc was garbage collected and we tried to invoke `call` on something strange")
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exit 1
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end
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GC.start()
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if hook_code_weak.weakref_alive?() then
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puts("proc was not garbage collected")
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exit 1
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end
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puts "test passed"
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exit 0
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