Class: Voodoo::GasELFGenerator
- Inherits:
-
Object
- Object
- Voodoo::GasELFGenerator
- Includes:
- CommandPostProcessor
- Defined in:
- lib/voodoo/generators/gas_elf_generator.rb
Overview
Class that generates ELF object files by invoking the GNU assembler on the output of a code generator that generates GNU assembly.
Instance Method Summary collapse
-
#initialize(asmgenerator, extra_args) ⇒ GasELFGenerator
constructor
A new instance of GasELFGenerator.
- #output_file_name(input_name) ⇒ Object
- #output_file_suffix ⇒ Object
-
#write(io) ⇒ Object
Writes the generated code to the given IO handle.
Methods included from CommandPostProcessor
shell_encode, tempfile, write_file_to_io
Constructor Details
#initialize(asmgenerator, extra_args) ⇒ GasELFGenerator
Returns a new instance of GasELFGenerator.
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# File 'lib/voodoo/generators/gas_elf_generator.rb', line 8 def initialize asmgenerator, extra_args @asmgenerator = asmgenerator @extra_args = extra_args @output_file_suffix = '.o' end |
Instance Method Details
#output_file_name(input_name) ⇒ Object
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# File 'lib/voodoo/generators/gas_elf_generator.rb', line 16 def output_file_name input_name input_name.sub(/\.voo$/, '') + @output_file_suffix end |
#output_file_suffix ⇒ Object
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# File 'lib/voodoo/generators/gas_elf_generator.rb', line 20 def output_file_suffix @output_file_suffix end |
#write(io) ⇒ Object
Writes the generated code to the given IO handle
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# File 'lib/voodoo/generators/gas_elf_generator.rb', line 25 def write io # Create temporary file to write assembly code to if io.respond_to? :path base = File.basename(io.path).sub(/([^.]*).*/, "\\1") else base = self.class.name end Tempfile.open(base + '.s') do |asmfile| Tempfile.open(base + '.o') do |elffile| elffile.close # Write assembly code to nsamfile @asmgenerator.write asmfile asmfile.close # Find out the name of the GNU assembler gas = Voodoo::Config.gas_command # Invoke gas on asmfile command = "#{gas} #{@extra_args}" + " -o #{shell_encode elffile.path}" + " #{shell_encode asmfile.path}" if system(command) write_file_to_io elffile.path, io end elffile.unlink end asmfile.unlink end end |