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begin
require "crabstone"
require "stringio"
rescue LoadError => e
puts "Please install crabstone, which is needed by the disassembler:"
puts " $ brew install capstone"
puts " $ gem install capstone"
raise e
end
module UJIT
def self.disasm(iseq)
blocks = UJIT.blocks_for(iseq)
return if blocks.empty?
io = StringIO.new
cs = Crabstone::Disassembler.new(Crabstone::ARCH_X86, Crabstone::MODE_64)
io.puts iseq.disasm
blocks.sort_by(&:address).reverse.each do |block|
io.puts "== ISEQ RANGE: #{block.iseq_start_index} -> #{block.iseq_end_index} ".ljust(80, "=")
cs.disasm(block.code, 0).each do |i|
io.printf(
"\t0x%<address>x:\t%<instruction>s\t%<details>s\n",
address: i.address,
instruction: i.mnemonic,
details: i.op_str
)
end
end
io.string
end
end
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