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|
#!/usr/bin/env ruby
# Copyright (C) 2011 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 "backends"
require "digest/sha1"
require "offsets"
require "parser"
require "self_hash"
require "settings"
require "transform"
class Assembler
def initialize(outp)
@outp = outp
@state = :cpp
@commentState = :none
@comment = nil
end
def enterAsm
@outp.puts "asm ("
@state = :asm
end
def leaveAsm
putsLastComment
@outp.puts ");"
@state = :cpp
end
def inAsm
enterAsm
yield
leaveAsm
end
def lastComment
if @comment
result = "// #{@comment}"
else
result = ""
end
@commentState = :none
@comment = nil
result
end
def putsLastComment
comment = lastComment
unless comment.empty?
@outp.puts comment
end
end
def puts(*line)
raise unless @state == :asm
@outp.puts("\"\\t" + line.join('') + "\\n\" #{lastComment}")
end
def print(line)
raise unless @state == :asm
@outp.print("\"" + line + "\"")
end
def putsLabel(labelName)
raise unless @state == :asm
@outp.puts("OFFLINE_ASM_GLOBAL_LABEL(#{labelName}) #{lastComment}")
end
def putsLocalLabel(labelName)
raise unless @state == :asm
@outp.puts("LOCAL_LABEL_STRING(#{labelName}) \":\\n\" #{lastComment}")
end
def self.labelReference(labelName)
"\" SYMBOL_STRING(#{labelName}) \""
end
def self.localLabelReference(labelName)
"\" LOCAL_LABEL_STRING(#{labelName}) \""
end
def comment(text)
case @commentState
when :none
@comment = text
@commentState = :one
when :one
@outp.puts "// #{@comment}"
@outp.puts "// #{text}"
@comment = nil
@commentState = :many
when :many
@outp.puts "// #{text}"
else
raise
end
end
end
asmFile = ARGV.shift
offsetsFile = ARGV.shift
outputFlnm = ARGV.shift
$stderr.puts "offlineasm: Parsing #{asmFile} and #{offsetsFile} and creating assembly file #{outputFlnm}."
configurationList = offsetsAndConfigurationIndex(offsetsFile)
inputData = IO::read(asmFile)
inputHash =
"// offlineasm input hash: " + Digest::SHA1.hexdigest(inputData) +
" " + Digest::SHA1.hexdigest(configurationList.map{|v| (v[0] + [v[1]]).join(' ')}.join(' ')) +
" " + selfHash
if FileTest.exist? outputFlnm
File.open(outputFlnm, "r") {
| inp |
firstLine = inp.gets
if firstLine and firstLine.chomp == inputHash
$stderr.puts "offlineasm: Nothing changed."
exit 0
end
}
end
File.open(outputFlnm, "w") {
| outp |
$output = outp
$output.puts inputHash
$asm = Assembler.new($output)
ast = parse(lex(inputData))
configurationList.each {
| configuration |
offsetsList = configuration[0]
configIndex = configuration[1]
forSettings(computeSettingsCombinations(ast)[configIndex], ast) {
| concreteSettings, lowLevelAST, backend |
lowLevelAST = lowLevelAST.resolve(*buildOffsetsMap(lowLevelAST, offsetsList))
emitCodeInConfiguration(concreteSettings, lowLevelAST, backend) {
$asm.inAsm {
lowLevelAST.lower(backend)
}
}
}
}
}
$stderr.puts "offlineasm: Assembly file #{outputFlnm} successfully generated."
|
