# Copyright (C) 2018 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_relative 'Assertion' require_relative 'GeneratedFile' require_relative 'Section' require_relative 'Template' require_relative 'Type' require_relative 'Wasm' module DSL @sections = [] @wasm_section = nil @current_section = nil @context = binding() @namespaces = [] def self.begin_section(name, config={}) assert("must call `end_section` before beginning a new section") { @current_section.nil? } @current_section = Section.new name, config end def self.end_section(name) assert("current section's name is `#{@current_section.name}`, but end_section was called with `#{name}`") { @current_section.name == name } @current_section.sort! @sections << @current_section if @current_section.is_wasm? assert("Cannot have 2 wasm sections") { @wasm_section.nil? } @wasm_section = @current_section end @current_section = nil end def self.op(name, config = {}) assert("`op` can only be called in between `begin_section` and `end_section`") { not @current_section.nil? } @current_section.add_opcode(name, config) end def self.op_group(desc, ops, config) assert("`op_group` can only be called in between `begin_section` and `end_section`") { not @current_section.nil? } @current_section.add_opcode_group(desc, ops, config) end def self.types(types) types.map do |type| type = (@namespaces + [type]).join "::" @context.eval("#{type} = Type.new '#{type}'") end end def self.templates(types) types.map do |type| type = (@namespaces + [type]).join "::" @context.eval("#{type} = Template.new '#{type}'") end end def self.namespace(name) @namespaces << name.to_s ctx = @context @context = @context.eval(" module #{name} def self.get_binding binding() end end #{name}.get_binding ") yield @context = ctx @namespaces.pop end def self.autogenerate_wasm_opcodes() assert("`autogenerate_wasm_opcodes` can only be called in between `begin_section` and `end_section`") { not @current_section.nil? } assert("`autogenerate_wasm_opcodes` can only be called from the `Wasm` section") { @current_section.name == :Wasm } Wasm::autogenerate_opcodes(@context, @wasm_json) end def self.run(options) bytecode_list_path = options[:bytecode_list] bytecode_list = File.open(bytecode_list_path).read @wasm_json = File.open(options[:wasm_json_filename]).read @context.eval(bytecode_list, bytecode_list_path) assert("must end last section") { @current_section.nil? } write_bytecodes(bytecode_list, options[:bytecodes_filename]) write_bytecode_structs(bytecode_list, options[:bytecode_structs_filename]) write_bytecode_dumper(bytecode_list, options[:bytecode_dumper_filename]) write_bytecodes_init(options[:init_asm_filename], bytecode_list) write_indices(bytecode_list, options[:bytecode_indices_filename]) write_llint_generator(options[:wasm_llint_generator_filename], bytecode_list, @wasm_json) write_wasm_init(options[:wasm_init_filename], bytecode_list, @wasm_json) end def self.write_bytecodes(bytecode_list, bytecodes_filename) GeneratedFile::create(bytecodes_filename, bytecode_list) do |template| template.prefix = "#pragma once\n" num_opcodes = @sections.map(&:opcodes).flatten.size template.body = [ @sections.map { |s| s.header_helpers(num_opcodes) }, @sections.select { |s| s.config[:emit_in_structs_file] }.map(&:for_each_struct) ].flatten.join("\n") end end def self.write_bytecode_structs(bytecode_list, bytecode_structs_filename) GeneratedFile::create(bytecode_structs_filename, bytecode_list) do |template| template.prefix = <<-EOF #pragma once #include "ArithProfile.h" #include "BytecodeDumper.h" #include "Fits.h" #include "GetByIdMetadata.h" #include "GetByValHistory.h" #include "Instruction.h" #include "IterationModeMetadata.h" #include "Opcode.h" #include "PutByIdStatus.h" #include "PutByIdFlags.h" #include "PutByValFlags.h" #include "ToThisStatus.h" namespace JSC { void dumpBytecode(BytecodeDumperBase* dumper, InstructionStream::Offset, const Instruction*); #if ENABLE(WEBASSEMBLY) void dumpWasm(BytecodeDumperBase* dumper, InstructionStream::Offset, const Instruction*); #endif // ENABLE(WEBASSEMBLY) EOF template.body = <<-EOF #{opcodes_filter { |s| s.config[:emit_in_structs_file] && !s.is_wasm? }.map(&:struct).join("\n")} #if ENABLE(WEBASSEMBLY) #{opcodes_filter { |s| s.config[:emit_in_structs_file] && s.is_wasm? }.map(&:struct).join("\n")} #endif // ENABLE(WEBASSEMBLY) EOF template.suffix = "} // namespace JSC" end end def self.write_bytecode_dumper(bytecode_list, bytecode_dumper_filename) GeneratedFile::create(bytecode_dumper_filename, bytecode_list) do |template| template.prefix = <<-EOF #include "config.h" #include "BytecodeDumper.h" #include "BytecodeStructs.h" namespace JSC { EOF template.body = <<-EOF #{Opcode.dump_bytecode(:Bytecode, :JSOpcodeTraits, opcodes_filter { |s| s.config[:emit_in_structs_file] && !s.is_wasm? })} #if ENABLE(WEBASSEMBLY) #{Opcode.dump_bytecode(:Wasm, :WasmOpcodeTraits, opcodes_filter { |s| s.is_wasm? })} #endif // ENABLE(WEBASSEMBLY) EOF template.suffix = "} // namespace JSC" end end def self.write_init_asm(opcodes, filename, *dependencies) GeneratedFile::create(filename, *dependencies) do |template| template.multiline_comment = nil template.line_comment = "#" template.body = (opcodes.map.with_index(&:set_entry_address) + opcodes.map.with_index(&:set_entry_address_wide16) + opcodes.map.with_index(&:set_entry_address_wide32)) .join("\n") end end def self.write_bytecodes_init(bytecodes_init_filename, *dependencies) write_init_asm(opcodes_for(:emit_in_asm_file), bytecodes_init_filename, *dependencies) end def self.write_wasm_init(wasm_init_filename, *dependencies) write_init_asm(@wasm_section.opcodes, wasm_init_filename, *dependencies) end def self.write_llint_generator(generator_filename, *dependencies) GeneratedFile::create(generator_filename, *dependencies) do |template| template.body = Wasm::generate_llint_generator(@wasm_section) end end def self.write_indices(bytecode_list, indices_filename) opcodes = opcodes_for(:emit_in_structs_file) GeneratedFile::create(indices_filename, bytecode_list) do |template| template.prefix = "namespace JSC {\n" template.body = opcodes.map(&:struct_indices).join("\n") template.suffix = "\n} // namespace JSC" end end def self.opcodes_for(file) sections = @sections.select { |s| s.config[file] } sections.map(&:opcodes).flatten end def self.opcodes_filter sections = @sections.select { |s| yield s } sections.map(&:opcodes).flatten end end