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      1 // Copyright 2011 the V8 project authors. All rights reserved.
      2 // Redistribution and use in source and binary forms, with or without
      3 // modification, are permitted provided that the following conditions are
      4 // met:
      5 //
      6 //     * Redistributions of source code must retain the above copyright
      7 //       notice, this list of conditions and the following disclaimer.
      8 //     * Redistributions in binary form must reproduce the above
      9 //       copyright notice, this list of conditions and the following
     10 //       disclaimer in the documentation and/or other materials provided
     11 //       with the distribution.
     12 //     * Neither the name of Google Inc. nor the names of its
     13 //       contributors may be used to endorse or promote products derived
     14 //       from this software without specific prior written permission.
     15 //
     16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27 
     28 #include "v8.h"
     29 
     30 #include "codegen.h"
     31 #include "deoptimizer.h"
     32 #include "full-codegen.h"
     33 #include "safepoint-table.h"
     34 
     35 // Note: this file was taken from the X64 version. ARM has a partially working
     36 // lithium implementation, but for now it is not ported to mips.
     37 
     38 namespace v8 {
     39 namespace internal {
     40 
     41 
     42 int Deoptimizer::table_entry_size_ = 10;
     43 
     44 
     45 int Deoptimizer::patch_size() {
     46   const int kCallInstructionSizeInWords = 3;
     47   return kCallInstructionSizeInWords * Assembler::kInstrSize;
     48 }
     49 
     50 
     51 void Deoptimizer::DeoptimizeFunction(JSFunction* function) {
     52   UNIMPLEMENTED();
     53 }
     54 
     55 
     56 void Deoptimizer::PatchStackCheckCodeAt(Address pc_after,
     57                                         Code* check_code,
     58                                         Code* replacement_code) {
     59   UNIMPLEMENTED();
     60 }
     61 
     62 
     63 void Deoptimizer::RevertStackCheckCodeAt(Address pc_after,
     64                                          Code* check_code,
     65                                          Code* replacement_code) {
     66   UNIMPLEMENTED();
     67 }
     68 
     69 
     70 void Deoptimizer::DoComputeOsrOutputFrame() {
     71   UNIMPLEMENTED();
     72 }
     73 
     74 
     75 void Deoptimizer::DoComputeFrame(TranslationIterator* iterator,
     76                                  int frame_index) {
     77   UNIMPLEMENTED();
     78 }
     79 
     80 
     81 void Deoptimizer::EntryGenerator::Generate() {
     82   UNIMPLEMENTED();
     83 }
     84 
     85 
     86 void Deoptimizer::TableEntryGenerator::GeneratePrologue() {
     87   UNIMPLEMENTED();
     88 }
     89 
     90 
     91 } }  // namespace v8::internal
     92