56 lines
1.6 KiB
Ruby
56 lines
1.6 KiB
Ruby
# This file is part of Metasm, the Ruby assembly manipulation suite
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# Copyright (C) 2007 Yoann GUILLOT
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#
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# Licence is LGPL, see LICENCE in the top-level directory
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#
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# This script takes a C header or a path to a Visual Studio install and
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# outputs a ruby source file defining StackOffsets, a hash used by the disassembler
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# In verbose mode (ruby -v), instead dumps the parsed header (+ warnings)
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#
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require 'metasm'
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filename = ARGV.shift
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abort "usage: #$0 filename" if not File.exist? filename
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# path to visual studio install directory
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if File.directory? filename
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src = <<EOS
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// add the path to the visual studio std headers
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#ifdef __METASM__
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#pragma include_dir #{(filename+'/VC/platformsdk/include').inspect}
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#pragma include_dir #{(filename+'/VC/include').inspect}
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#pragma prepare_visualstudio
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#pragma no_warn_redefinition
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#endif
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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EOS
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else
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# standalone header
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src = File.read(filename)
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end
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include Metasm
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cp = Ia32.new.new_cparser.parse(src)
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if not $VERBOSE
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funcs = cp.toplevel.symbol.values.grep(C::Variable).reject { |v| v.initializer or not v.type.kind_of? C::Function }
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puts 'module Metasm'
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puts 'StackOffsets = {'
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align = lambda { |val| (val + cp.typesize[:ptr] - 1) / cp.typesize[:ptr] * cp.typesize[:ptr] }
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puts funcs.find_all { |f| f.attributes and f.attributes.include? 'stdcall' and f.type.args }.sort_by { |f| f.name }.map { |f|
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"#{f.name.inspect} => #{f.type.args.inject(0) { |sum, arg| sum + align[cp.sizeof(arg)] }}"
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}.join(",\n")
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puts '}'
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puts 'end'
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else
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# dump the full parsed header
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puts cp.lexer.dump_macros(cp.lexer.definition.keys, false), '', '', cp
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end
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