Allow arguments in safepoints with registers.

src/objects.cc

 // Copyright 2010 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
@@ skipping 5969 matching lines @@
       if (statement_position < p && p <= position) {
         statement_position = p;
       }
     }
     it.next();
   }
   return statement_position;
 }
 
 
-uint8_t* Code::GetSafepointEntry(Address pc) {
+SafepointEntry Code::GetSafepointEntry(Address pc) {
   SafepointTable table(this);
-  unsigned pc_offset = static_cast<unsigned>(pc - instruction_start());
-  for (unsigned i = 0; i < table.length(); i++) {
-    // TODO(kasperl): Replace the linear search with binary search.
-    if (table.GetPcOffset(i) == pc_offset) return table.GetEntry(i);
-  }
-  return NULL;
+  return table.FindEntry(pc);
 }
 
 
 void Code::SetNoStackCheckTable() {
   // Indicate the absence of a stack-check table by a table start after the
   // end of the instructions.  Table start must be aligned, so round up.
   set_stack_check_table_start(RoundUp(instruction_size(), kIntSize));
 }
 
 
@@ skipping 250 matching lines @@
 #endif
 
   if (kind() == OPTIMIZED_FUNCTION) {
     SafepointTable table(this);
     PrintF(out, "Safepoints (size = %u)\n", table.size());
     for (unsigned i = 0; i < table.length(); i++) {
       unsigned pc_offset = table.GetPcOffset(i);
       PrintF(out, "%p  %4d  ", (instruction_start() + pc_offset), pc_offset);
       table.PrintEntry(i);
       PrintF(out, " (sp -> fp)");
-      int deoptimization_index = table.GetDeoptimizationIndex(i);
+      int deoptimization_index = table.GetEntry(i).deoptimization_index();
       if (deoptimization_index != Safepoint::kNoDeoptimizationIndex) {
         PrintF(out, "  %6d", deoptimization_index);
       } else {
         PrintF(out, "  <none>");
       }
       PrintF(out, "\n");
     }
     PrintF(out, "\n");
   } else if (kind() == FUNCTION) {
     unsigned offset = stack_check_table_start();
@@ skipping 3589 matching lines @@
   if (break_point_objects()->IsUndefined()) return 0;
   // Single beak point.
   if (!break_point_objects()->IsFixedArray()) return 1;
   // Multiple break points.
   return FixedArray::cast(break_point_objects())->length();
 }
 #endif
 
 
 } }  // namespace v8::internal