| #!/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 "config" |
| 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 |
| @internalComment = nil |
| @annotation = nil |
| @codeOrigin = nil |
| @numLocalLabels = 0 |
| @numGlobalLabels = 0 |
| |
| @newlineSpacerState = :none |
| end |
| |
| def enterAsm |
| @outp.puts "OFFLINE_ASM_BEGIN" |
| @state = :asm |
| end |
| |
| def leaveAsm |
| putsLastComment |
| @outp.puts "OFFLINE_ASM_END" |
| @state = :cpp |
| end |
| |
| def inAsm |
| enterAsm |
| yield |
| leaveAsm |
| end |
| |
| # Concatenates all the various components of the comment to dump. |
| def lastComment |
| separator = " " |
| result = "" |
| result = "#{@comment}" if @comment |
| if @annotation and $enableInstrAnnotations |
| result += separator if result != "" |
| result += "#{@annotation}" |
| end |
| if @internalComment |
| result += separator if result != "" |
| result += "#{@internalComment}" |
| end |
| if @codeOrigin and $enableCodeOriginComments |
| result += separator if result != "" |
| result += "#{@codeOrigin}" |
| end |
| if result != "" |
| result = "// " + result |
| end |
| |
| # Reset all the components that we've just sent to be dumped. |
| @commentState = :none |
| @comment = nil |
| @annotation = nil |
| @codeOrigin = nil |
| @internalComment = nil |
| result |
| end |
| |
| # Puts a C Statement in the output stream. |
| def putc(*line) |
| raise unless @state == :asm |
| @outp.puts(formatDump(" " + line.join(''), lastComment)) |
| end |
| |
| def formatDump(dumpStr, comment, commentColumns=$preferredCommentStartColumn) |
| if comment.length > 0 |
| "%-#{commentColumns}s %s" % [dumpStr, comment] |
| else |
| dumpStr |
| end |
| end |
| |
| # private method for internal use only. |
| def putAnnotation(text) |
| raise unless @state == :asm |
| if $enableInstrAnnotations |
| @outp.puts text |
| @annotation = nil |
| end |
| end |
| |
| def putLocalAnnotation() |
| putAnnotation " // #{@annotation}" if @annotation |
| end |
| |
| def putGlobalAnnotation() |
| putsNewlineSpacerIfAppropriate(:annotation) |
| putAnnotation "// #{@annotation}" if @annotation |
| end |
| |
| def putsLastComment |
| comment = lastComment |
| unless comment.empty? |
| @outp.puts comment |
| end |
| end |
| |
| def puts(*line) |
| raise unless @state == :asm |
| @outp.puts(formatDump(" \"\\t" + line.join('') + "\\n\"", lastComment)) |
| end |
| |
| def print(line) |
| raise unless @state == :asm |
| @outp.print("\"" + line + "\"") |
| end |
| |
| def putsNewlineSpacerIfAppropriate(state) |
| if @newlineSpacerState != state |
| @outp.puts("\n") |
| @newlineSpacerState = state |
| end |
| end |
| |
| def putsLabel(labelName) |
| raise unless @state == :asm |
| @numGlobalLabels += 1 |
| putsNewlineSpacerIfAppropriate(:global) |
| @internalComment = $enableLabelCountComments ? "Global Label #{@numGlobalLabels}" : nil |
| if /\Allint_op_/.match(labelName) |
| @outp.puts(formatDump("OFFLINE_ASM_OPCODE_LABEL(op_#{$~.post_match})", lastComment)) |
| else |
| @outp.puts(formatDump("OFFLINE_ASM_GLUE_LABEL(#{labelName})", lastComment)) |
| end |
| @newlineSpacerState = :none # After a global label, we can use another spacer. |
| end |
| |
| def putsLocalLabel(labelName) |
| raise unless @state == :asm |
| @numLocalLabels += 1 |
| @outp.puts("\n") |
| @internalComment = $enableLabelCountComments ? "Local Label #{@numLocalLabels}" : nil |
| @outp.puts(formatDump(" OFFLINE_ASM_LOCAL_LABEL(#{labelName})", lastComment)) |
| end |
| |
| def self.labelReference(labelName) |
| "\" LOCAL_REFERENCE(#{labelName}) \"" |
| end |
| |
| def self.localLabelReference(labelName) |
| "\" LOCAL_LABEL_STRING(#{labelName}) \"" |
| end |
| |
| def self.cLabelReference(labelName) |
| if /\Allint_op_/.match(labelName) |
| "op_#{$~.post_match}" # strip opcodes of their llint_ prefix. |
| else |
| "#{labelName}" |
| end |
| end |
| |
| def self.cLocalLabelReference(labelName) |
| "#{labelName}" |
| end |
| |
| def codeOrigin(text) |
| case @commentState |
| when :none |
| @codeOrigin = text |
| @commentState = :one |
| when :one |
| if $enableCodeOriginComments |
| @outp.puts " // #{@codeOrigin}" |
| @outp.puts " // #{text}" |
| end |
| @codeOrigin = nil |
| @commentState = :many |
| when :many |
| @outp.puts "// #{text}" if $enableCodeOriginComments |
| else |
| raise |
| end |
| end |
| |
| def comment(text) |
| @comment = text |
| end |
| def annotation(text) |
| @annotation = text |
| end |
| end |
| |
| asmFile = ARGV.shift |
| offsetsFile = ARGV.shift |
| outputFlnm = ARGV.shift |
| |
| $stderr.puts "offlineasm: Parsing #{asmFile} and #{offsetsFile} and creating assembly file #{outputFlnm}." |
| |
| begin |
| configurationList = offsetsAndConfigurationIndex(offsetsFile) |
| rescue MissingMagicValuesException |
| $stderr.puts "offlineasm: No magic values found. Skipping assembly file generation." |
| exit 0 |
| end |
| |
| inputHash = |
| "// offlineasm input hash: " + parseHash(asmFile) + |
| " " + 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(asmFile) |
| |
| configurationList.each { |
| | configuration | |
| offsetsList = configuration[0] |
| configIndex = configuration[1] |
| forSettings(computeSettingsCombinations(ast)[configIndex], ast) { |
| | concreteSettings, lowLevelAST, backend | |
| lowLevelAST = lowLevelAST.resolve(*buildOffsetsMap(lowLevelAST, offsetsList)) |
| lowLevelAST.validate |
| emitCodeInConfiguration(concreteSettings, lowLevelAST, backend) { |
| $asm.inAsm { |
| lowLevelAST.lower(backend) |
| } |
| } |
| } |
| } |
| } |
| |
| $stderr.puts "offlineasm: Assembly file #{outputFlnm} successfully generated." |
| |
