// Copyright 2012 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * 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. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT // OWNER OR 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. #include "v8.h" #include "bootstrapper.h" #include "codegen.h" #include "compiler.h" #include "debug.h" #include "prettyprinter.h" #include "rewriter.h" #include "runtime.h" #include "stub-cache.h" namespace v8 { namespace internal { #define __ ACCESS_MASM(masm_) #ifdef DEBUG Comment::Comment(MacroAssembler* masm, const char* msg) : masm_(masm), msg_(msg) { __ RecordComment(msg); } Comment::~Comment() { if (msg_[0] == '[') __ RecordComment("]"); } #endif // DEBUG #undef __ void CodeGenerator::MakeCodePrologue(CompilationInfo* info) { #ifdef DEBUG bool print_source = false; bool print_ast = false; const char* ftype; if (Isolate::Current()->bootstrapper()->IsActive()) { print_source = FLAG_print_builtin_source; print_ast = FLAG_print_builtin_ast; ftype = "builtin"; } else { print_source = FLAG_print_source; print_ast = FLAG_print_ast; ftype = "user-defined"; } if (FLAG_trace_codegen || print_source || print_ast) { PrintF("*** Generate code for %s function: ", ftype); info->function()->name()->ShortPrint(); PrintF(" ***\n"); } if (print_source) { PrintF("--- Source from AST ---\n%s\n", PrettyPrinter().PrintProgram(info->function())); } if (print_ast) { PrintF("--- AST ---\n%s\n", AstPrinter().PrintProgram(info->function())); } #endif // DEBUG } Handle<Code> CodeGenerator::MakeCodeEpilogue(MacroAssembler* masm, Code::Flags flags, CompilationInfo* info) { Isolate* isolate = info->isolate(); // Allocate and install the code. CodeDesc desc; masm->GetCode(&desc); Handle<Code> code = isolate->factory()->NewCode(desc, flags, masm->CodeObject()); if (!code.is_null()) { isolate->counters()->total_compiled_code_size()->Increment( code->instruction_size()); } return code; } void CodeGenerator::PrintCode(Handle<Code> code, CompilationInfo* info) { #ifdef ENABLE_DISASSEMBLER bool print_code = Isolate::Current()->bootstrapper()->IsActive() ? FLAG_print_builtin_code : (FLAG_print_code || (info->IsOptimizing() && FLAG_print_opt_code)); if (print_code) { // Print the source code if available. FunctionLiteral* function = info->function(); Handle<Script> script = info->script(); if (!script->IsUndefined() && !script->source()->IsUndefined()) { PrintF("--- Raw source ---\n"); StringInputBuffer stream(String::cast(script->source())); stream.Seek(function->start_position()); // fun->end_position() points to the last character in the stream. We // need to compensate by adding one to calculate the length. int source_len = function->end_position() - function->start_position() + 1; for (int i = 0; i < source_len; i++) { if (stream.has_more()) PrintF("%c", stream.GetNext()); } PrintF("\n\n"); } if (info->IsOptimizing()) { if (FLAG_print_unopt_code) { PrintF("--- Unoptimized code ---\n"); info->closure()->shared()->code()->Disassemble( *function->debug_name()->ToCString()); } PrintF("--- Optimized code ---\n"); } else { PrintF("--- Code ---\n"); } code->Disassemble(*function->debug_name()->ToCString()); } #endif // ENABLE_DISASSEMBLER } bool CodeGenerator::ShouldGenerateLog(Expression* type) { ASSERT(type != NULL); Isolate* isolate = Isolate::Current(); if (!isolate->logger()->is_logging() && !CpuProfiler::is_profiling(isolate)) { return false; } Handle<String> name = Handle<String>::cast(type->AsLiteral()->handle()); if (FLAG_log_regexp) { if (name->IsEqualTo(CStrVector("regexp"))) return true; } return false; } bool CodeGenerator::RecordPositions(MacroAssembler* masm, int pos, bool right_here) { if (pos != RelocInfo::kNoPosition) { masm->positions_recorder()->RecordStatementPosition(pos); masm->positions_recorder()->RecordPosition(pos); if (right_here) { return masm->positions_recorder()->WriteRecordedPositions(); } } return false; } void ArgumentsAccessStub::Generate(MacroAssembler* masm) { switch (type_) { case READ_ELEMENT: GenerateReadElement(masm); break; case NEW_NON_STRICT_FAST: GenerateNewNonStrictFast(masm); break; case NEW_NON_STRICT_SLOW: GenerateNewNonStrictSlow(masm); break; case NEW_STRICT: GenerateNewStrict(masm); break; } } int CEntryStub::MinorKey() { int result = (save_doubles_ == kSaveFPRegs) ? 1 : 0; ASSERT(result_size_ == 1 || result_size_ == 2); #ifdef _WIN64 return result | ((result_size_ == 1) ? 0 : 2); #else return result; #endif } } } // namespace v8::internal