48 lines
1.4 KiB
Ruby
48 lines
1.4 KiB
Ruby
# This file is part of Metasm, the Ruby assembly manipulation suite
|
|
# Copyright (C) 2006-2009 Yoann GUILLOT
|
|
#
|
|
# Licence is LGPL, see LICENCE in the top-level directory
|
|
|
|
#
|
|
# This exemple illustrates the usage of the C parser to compute the offset of members of a given structure
|
|
# usage: struct_offset.rb <c file> <struct name>
|
|
#
|
|
|
|
require 'metasm'
|
|
include Metasm
|
|
|
|
require 'optparse'
|
|
opts = { :hdrs => [], :defs => {}, :path => [], :cpu => 'X86', :offbase => 16 }
|
|
OptionParser.new { |opt|
|
|
opt.on('-o outfile') { |f| opts[:outfile] = f }
|
|
opt.on('-H additional_header') { |f| opts[:hdrs] << f }
|
|
opt.on('-I path', '--includepath path') { |f| opts[:path] << f }
|
|
opt.on('-D var') { |f| k, v = f.split('=', 2) ; opts[:defs].update k => (v || '') }
|
|
opt.on('-d') { opts[:offbase] = 10 }
|
|
opt.on('--cpu CpuClass') { |c| opts[:cpu] = c }
|
|
opt.on('--gcc') { opts[:gcc] = true }
|
|
opt.on('--vs', '--visualstudio') { opts[:vs] = true }
|
|
}.parse!(ARGV)
|
|
|
|
cp = Metasm.const_get(opts[:cpu]).new.new_cparser
|
|
|
|
cp.prepare_gcc if opts[:gcc]
|
|
cp.prepare_visualstudio if opts[:vs]
|
|
|
|
pp = cp.lexer
|
|
pp.warn_redefinition = false
|
|
pp.include_search_path[0, 0] = opts[:path]
|
|
opts[:defs].each { |k, v| pp.define k, v }
|
|
|
|
cp.parse opts[:hdrs].map { |h| "#include <#{h}>" }.join("\n")
|
|
|
|
abort 'need source + struct name' unless ARGV.length >= 2
|
|
|
|
cp.parse_file(ARGV.shift)
|
|
|
|
$stdout.reopen File.open(opts[:outfile], 'w') if opts[:outfile]
|
|
|
|
ARGV.each { |structname|
|
|
puts cp.alloc_c_struct(structname)
|
|
}
|