| # 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. |
| |
| require "config" |
| require "armv7" |
| require "ast" |
| require "x86" |
| require "cloop" |
| |
| BACKENDS = |
| [ |
| "X86", |
| "X86_64", |
| "ARMv7", |
| "C_LOOP" |
| ] |
| |
| # Keep the set of working backends separate from the set of backends that might be |
| # supported. This is great because the BACKENDS list is almost like a reserved |
| # words list, in that it causes settings resolution to treat those words specially. |
| # Hence this lets us set aside the name of a backend we might want to support in |
| # the future while not actually supporting the backend yet. |
| WORKING_BACKENDS = |
| [ |
| "X86", |
| "X86_64", |
| "ARMv7", |
| "C_LOOP" |
| ] |
| |
| BACKEND_PATTERN = Regexp.new('\\A(' + BACKENDS.join(')|(') + ')\\Z') |
| |
| class Node |
| def lower(name) |
| begin |
| $activeBackend = name |
| send("lower" + name) |
| rescue => e |
| e.message << "At #{codeOriginString}" |
| raise e |
| end |
| end |
| end |
| |
| # Overrides for lower() for those nodes that are backend-agnostic |
| |
| class Label |
| def lower(name) |
| $asm.putsLabel(self.name[1..-1]) |
| end |
| end |
| |
| class LocalLabel |
| def lower(name) |
| $asm.putsLocalLabel "_offlineasm_#{self.name[1..-1]}" |
| end |
| end |
| |
| class LabelReference |
| def asmLabel |
| Assembler.labelReference(name[1..-1]) |
| end |
| def cLabel |
| Assembler.cLabelReference(name[1..-1]) |
| end |
| end |
| |
| class LocalLabelReference |
| def asmLabel |
| Assembler.localLabelReference("_offlineasm_"+name[1..-1]) |
| end |
| def cLabel |
| Assembler.cLocalLabelReference("_offlineasm_"+name[1..-1]) |
| end |
| end |
| |
| class Skip |
| def lower(name) |
| end |
| end |
| |
| class Sequence |
| def lower(name) |
| $activeBackend = name |
| if respond_to? "getModifiedList#{name}" |
| newList = send("getModifiedList#{name}") |
| newList.each { |
| | node | |
| node.lower(name) |
| } |
| elsif respond_to? "lower#{name}" |
| send("lower#{name}") |
| else |
| @list.each { |
| | node | |
| node.lower(name) |
| } |
| end |
| end |
| end |
| |