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Edit File : code_block.rb \| Size : 2.28 KB
module RubyVM::RJIT class CodeBlock # @param mem_block [Integer] JIT buffer address # @param mem_size [Integer] JIT buffer size # @param outliend [TrueClass,FalseClass] true for outlined CodeBlock def initialize(mem_block:, mem_size:, outlined: false) @comments = Hash.new { \|h, k\| h[k] = [] } if dump_disasm? @mem_block = mem_block @mem_size = mem_size @write_pos = 0 @outlined = outlined end # @param asm [RubyVM::RJIT::Assembler] def write(asm) return 0 if @write_pos + asm.size >= @mem_size start_addr = write_addr # Write machine code C.mprotect_write(@mem_block, @mem_size) @write_pos += asm.assemble(start_addr) C.mprotect_exec(@mem_block, @mem_size) end_addr = write_addr # Convert comment indexes to addresses asm.comments.each do \|index, comments\| @comments[start_addr + index] += comments if dump_disasm? end asm.comments.clear # Dump disasm if --rjit-dump-disasm if C.rjit_opts.dump_disasm && start_addr < end_addr dump_disasm(start_addr, end_addr) end start_addr end def set_write_addr(addr) @write_pos = addr - @mem_block @comments.delete(addr) if dump_disasm? end def with_write_addr(addr) old_write_pos = @write_pos set_write_addr(addr) yield ensure @write_pos = old_write_pos end def write_addr @mem_block + @write_pos end def include?(addr) (@mem_block...(@mem_block + @mem_size)).include?(addr) end def dump_disasm(from, to, io: STDOUT, color: true, test: false) C.dump_disasm(from, to, test:).each do \|address, mnemonic, op_str\| @comments.fetch(address, []).each do \|comment\| io.puts colorize(" # #{comment}", bold: true, color:) end io.puts colorize(" 0x#{format("%x", address)}: #{mnemonic} #{op_str}", color:) end io.puts end private def colorize(text, bold: false, color:) return text unless color buf = +'' buf << "\e[1m" if bold buf << "\e[34m" if @outlined buf << text buf << "\e[0m" buf end def bold(text) "\e[1m#{text}\e[0m" end def dump_disasm? C.rjit_opts.dump_disasm end end end Back

Edit File : code_block.rb | Size : 2.28 KB

module RubyVM::RJIT
  class CodeBlock
    # @param mem_block [Integer] JIT buffer address
    # @param mem_size  [Integer] JIT buffer size
    # @param outliend  [TrueClass,FalseClass] true for outlined CodeBlock
    def initialize(mem_block:, mem_size:, outlined: false)
      @comments  = Hash.new { |h, k| h[k] = [] } if dump_disasm?
      @mem_block = mem_block
      @mem_size  = mem_size
      @write_pos = 0
      @outlined  = outlined
    end

# @param asm [RubyVM::RJIT::Assembler]
    def write(asm)
      return 0 if @write_pos + asm.size >= @mem_size

start_addr = write_addr

# Write machine code
      C.mprotect_write(@mem_block, @mem_size)
      @write_pos += asm.assemble(start_addr)
      C.mprotect_exec(@mem_block, @mem_size)

end_addr = write_addr

# Convert comment indexes to addresses
      asm.comments.each do |index, comments|
        @comments[start_addr + index] += comments if dump_disasm?
      end
      asm.comments.clear

# Dump disasm if --rjit-dump-disasm
      if C.rjit_opts.dump_disasm && start_addr < end_addr
        dump_disasm(start_addr, end_addr)
      end
      start_addr
    end

def set_write_addr(addr)
      @write_pos = addr - @mem_block
      @comments.delete(addr) if dump_disasm?
    end

def with_write_addr(addr)
      old_write_pos = @write_pos
      set_write_addr(addr)
      yield
    ensure
      @write_pos = old_write_pos
    end

def write_addr
      @mem_block + @write_pos
    end

def include?(addr)
      (@mem_block...(@mem_block + @mem_size)).include?(addr)
    end

def dump_disasm(from, to, io: STDOUT, color: true, test: false)
      C.dump_disasm(from, to, test:).each do |address, mnemonic, op_str|
        @comments.fetch(address, []).each do |comment|
          io.puts colorize("  # #{comment}", bold: true, color:)
        end
        io.puts colorize("  0x#{format("%x", address)}: #{mnemonic} #{op_str}", color:)
      end
      io.puts
    end

private

def colorize(text, bold: false, color:)
      return text unless color
      buf = +''
      buf << "\e[1m" if bold
      buf << "\e[34m" if @outlined
      buf << text
      buf << "\e[0m"
      buf
    end

def bold(text)
      "\e[1m#{text}\e[0m"
    end

def dump_disasm?
      C.rjit_opts.dump_disasm
    end
  end
end

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