Thread-local store buffers, v2

runtime/vm/stub_code_mips.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_MIPS)
 
 #include "vm/assembler.h"
 #include "vm/code_generator.h"
 #include "vm/compiler.h"
@@ skipping 1080 matching lines @@
   __ lw(T1, Address(SP, 0 * kWordSize));
   __ lw(T2, Address(SP, 1 * kWordSize));
   __ lw(T3, Address(SP, 2 * kWordSize));
   __ addiu(SP, SP, Immediate(3 * kWordSize));
   __ Ret();
 
   __ Bind(&add_to_buffer);
   __ ori(T2, T2, Immediate(1 << RawObject::kRememberedBit));
   __ sw(T2, FieldAddress(T0, Object::tags_offset()));
 
-  // Load the isolate.
-  // Spilled: T1, T2, T3.
-  // T0: Address being stored.
-  __ LoadIsolate(T1);
-
-  // Load the StoreBuffer block out of the isolate. Then load top_ out of the
+  // Load the StoreBuffer block out of the thread. Then load top_ out of the
   // StoreBufferBlock and add the address to the pointers_.
-  // T1: Isolate.
-  __ lw(T1, Address(T1, Isolate::store_buffer_offset()));
+  __ lw(T1, Address(THR, Thread::store_buffer_block_offset()));
   __ lw(T2, Address(T1, StoreBufferBlock::top_offset()));
   __ sll(T3, T2, 2);
   __ addu(T3, T1, T3);
   __ sw(T0, Address(T3, StoreBufferBlock::pointers_offset()));
 
   // Increment top_ and check for overflow.
   // T2: top_
   // T1: StoreBufferBlock
   Label L;
   __ addiu(T2, T2, Immediate(1));
   __ sw(T2, Address(T1, StoreBufferBlock::top_offset()));
   __ addiu(CMPRES1, T2, Immediate(-StoreBufferBlock::kSize));
   // Restore values.
   __ lw(T1, Address(SP, 0 * kWordSize));
   __ lw(T2, Address(SP, 1 * kWordSize));
   __ lw(T3, Address(SP, 2 * kWordSize));
   __ beq(CMPRES1, ZR, &L);
   __ delay_slot()->addiu(SP, SP, Immediate(3 * kWordSize));
   __ Ret();
 
   // Handle overflow: Call the runtime leaf function.
   __ Bind(&L);
   // Setup frame, push callee-saved registers.
 
   __ EnterCallRuntimeFrame(1 * kWordSize);
-  __ LoadIsolate(A0);
+  __ mov(A0, THR);
   __ CallRuntime(kStoreBufferBlockProcessRuntimeEntry, 1);
   __ Comment("UpdateStoreBufferStub return");
   // Restore callee-saved registers, tear down frame.
   __ LeaveCallRuntimeFrame();
   __ Ret();
 }
 
 
 // Called for inline allocation of objects.
 // Input parameters:
@@ skipping 1149 matching lines @@
 // Result:
 //  T1: entry point.
 void StubCode::GenerateMegamorphicLookupStub(Assembler* assembler) {
   EmitMegamorphicLookup(assembler, T0, T1, T1);
   __ Ret();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_MIPS