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#!/usr/bin/env ruby
# Sample code for SPARC of Unicorn. Nguyen Anh Quynh <aquynh@gmail.com>
# Ruby sample ported by Sascha Schirra <sashs82@gmail.com>
require 'unicorn_engine'
require 'unicorn_engine/sparc_const'
include UnicornEngine
# code to be emulated
SPARC_CODE = "\x86\x00\x40\x02" # add %g1, %g2, %g3;
# memory address where emulation starts
ADDRESS = 0x10000
# callback for tracing basic blocks
$hook_block = Proc.new do |uc, address, size, user_data|
puts(">>> Tracing basic block at 0x%x, block size = 0x%x" % [address, size])
end
# callback for tracing instructions
$hook_code = Proc.new do |uc, address, size, user_data|
puts(">>> Tracing instruction at 0x%x, instruction size = %u" % [address, size])
end
# Test SPARC
def test_sparc()
puts("Emulate SPARC code")
begin
# Initialize emulator in SPARC EB mode
mu = Uc.new UC_ARCH_SPARC, UC_MODE_SPARC32|UC_MODE_BIG_ENDIAN
# 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, SPARC_CODE)
# initialize machine registers
mu.reg_write(UC_SPARC_REG_G1, 0x1230)
mu.reg_write(UC_SPARC_REG_G2, 0x6789)
mu.reg_write(UC_SPARC_REG_G3, 0x5555)
# 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 + SPARC_CODE.bytesize)
# now puts out some registers
puts(">>> Emulation done. Below is the CPU context")
g3 = mu.reg_read(UC_SPARC_REG_G3)
puts(">>> G3 = 0x%x" %g3)
rescue UcError => e
puts("ERROR: %s" % e)
end
end
test_sparc()
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