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#!/usr/bin/env ruby
# Copyright (C) 2011-2023 Apple Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
# THE POSSIBILITY OF SUCH DAMAGE.
$: << File.dirname(__FILE__)
require "config"
require "backends"
require "digest/sha1"
require "offsets"
require 'optparse'
require "parser"
require "self_hash"
require "settings"
require "shellwords"
require "transform"
IncludeFile.processIncludeOptions()
inputFlnm = ARGV.shift
settingsFlnm = ARGV.shift
outputFlnm = ARGV.shift
tempFlnm = File.join(
ENV['TARGET_TEMP_DIR'] || File.dirname(outputFlnm),
"#{File.basename(outputFlnm)}.part"
)
inputBackends = canonicalizeBackendNames(ARGV.shift.split(/[,\s]+/))
includeOnlyBackends(inputBackends)
variants = ARGV.shift.split(/[,\s]+/)
$options = {}
OptionParser.new do |opts|
opts.banner = "Usage: generate_offset_extractor.rb asmFile settingFile outputFileName backends variants [--webkit-additions-path=<path>] [--depfile=<depfile>]"
opts.on("--webkit-additions-path=PATH", "WebKitAdditions path.") do |path|
$options[:webkit_additions_path] = path
end
opts.on("--depfile=DEPFILE", "path to write Makefile-style discovered dependencies to.") do |path|
$options[:depfile] = path
end
end.parse!
begin
configurationList = configurationIndicesForVariants(settingsFlnm, variants)
rescue MissingMagicValuesException
$stderr.puts "OffsetExtractor: No magic values found. Skipping offsets extractor file generation."
exit 1
end
def emitMagicNumber
OFFSET_MAGIC_NUMBERS.each {
| number |
$output.puts "unsigned(#{number}),"
}
end
configurationHash = Digest::SHA1.hexdigest(configurationList.join(' '))
inputHash = "// OffsetExtractor input hash: #{parseHash(inputFlnm, $options)} #{configurationHash} #{selfHash} #{validBackends.join(' ')}"
if FileTest.exist?(outputFlnm) and (not $options[:depfile] or FileTest.exist?($options[:depfile]))
File.open(outputFlnm, "r") {
| inp |
firstLine = inp.gets
if firstLine and firstLine.chomp == inputHash
# Nothing changed.
exit 0
end
}
end
sources = Set.new
ast = parse(inputFlnm, $options, sources)
settingsCombinations = computeSettingsCombinations(ast)
if $options[:depfile]
depfile = File.open($options[:depfile], "w")
depfile.print(Shellwords.escape(outputFlnm), ": ")
depfile.puts(Shellwords.join(sources.sort))
end
File.open(tempFlnm, "w") {
| outp |
$output = outp
outp.puts inputHash
configurationList.each {
| configIndex |
forSettings(settingsCombinations[configIndex], ast) {
| concreteSettings, lowLevelAST, backend |
lowLevelAST = lowLevelAST.demacroify({})
offsetsList = offsetsList(lowLevelAST)
sizesList = sizesList(lowLevelAST)
constsList = constsList(lowLevelAST)
emitCodeInConfiguration(concreteSettings, lowLevelAST, backend) {
# Windows complains about signed integers being cast to unsigned but we just want the bits.
constsList.each_with_index {
| const, index |
outp.puts "constexpr int64_t constValue#{index} = static_cast<int64_t>(#{const.value});"
}
outp.puts "static const int64_t offsetExtractorTable[] = {"
OFFSET_HEADER_MAGIC_NUMBERS.each {
| number |
outp.puts "unsigned(#{number}),"
}
emitMagicNumber
outp.puts "#{configIndex},"
offsetsList.each {
| offset |
emitMagicNumber
outp.puts "OFFLINE_ASM_OFFSETOF(#{offset.struct}, #{offset.field}),"
}
sizesList.each {
| sizeof |
emitMagicNumber
outp.puts "sizeof(#{sizeof.struct}),"
}
constsList.each_with_index {
| const, index |
emitMagicNumber
outp.puts "constValue#{index},"
}
outp.puts "};"
}
}
}
outp.puts "static const int64_t offsetExtractorTable[] = { };" if not configurationList.size
}
File.rename(tempFlnm, outputFlnm)
|
