[fullcodegen] Remove exception handling support.

src/full-codegen/mips/full-codegen-mips.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_MIPS
 
 // Note on Mips implementation:
 //
 // The result_register() for mips is the 'v0' register, which is defined
 // by the ABI to contain function return values. However, the first
@@ skipping 3441 matching lines @@
     // code.  Fetch it from the context.
     __ lw(at, ContextMemOperand(cp, Context::CLOSURE_INDEX));
   } else {
     DCHECK(closure_scope->is_function_scope());
     __ lw(at, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
   }
   PushOperand(at);
 }
 
 
-// ----------------------------------------------------------------------------
-// Non-local control flow support.
-
-void FullCodeGenerator::EnterFinallyBlock() {
-  DCHECK(!result_register().is(a1));
-  // Store pending message while executing finally block.
-  ExternalReference pending_message_obj =
-      ExternalReference::address_of_pending_message_obj(isolate());
-  __ li(at, Operand(pending_message_obj));
-  __ lw(a1, MemOperand(at));
-  PushOperand(a1);
-
-  ClearPendingMessage();
-}
-
-
-void FullCodeGenerator::ExitFinallyBlock() {
-  DCHECK(!result_register().is(a1));
-  // Restore pending message from stack.
-  PopOperand(a1);
-  ExternalReference pending_message_obj =
-      ExternalReference::address_of_pending_message_obj(isolate());
-  __ li(at, Operand(pending_message_obj));
-  __ sw(a1, MemOperand(at));
-}
-
-
-void FullCodeGenerator::ClearPendingMessage() {
-  DCHECK(!result_register().is(a1));
-  ExternalReference pending_message_obj =
-      ExternalReference::address_of_pending_message_obj(isolate());
-  __ LoadRoot(a1, Heap::kTheHoleValueRootIndex);
-  __ li(at, Operand(pending_message_obj));
-  __ sw(a1, MemOperand(at));
-}
-
-
-void FullCodeGenerator::DeferredCommands::EmitCommands() {
-  DCHECK(!result_register().is(a1));
-  __ Pop(result_register());  // Restore the accumulator.
-  __ Pop(a1);                 // Get the token.
-  for (DeferredCommand cmd : commands_) {
-    Label skip;
-    __ li(at, Operand(Smi::FromInt(cmd.token)));
-    __ Branch(&skip, ne, a1, Operand(at));
-    switch (cmd.command) {
-      case kReturn:
-        codegen_->EmitUnwindAndReturn();
-        break;
-      case kThrow:
-        __ Push(result_register());
-        __ CallRuntime(Runtime::kReThrow);
-        break;
-      case kContinue:
-        codegen_->EmitContinue(cmd.target);
-        break;
-      case kBreak:
-        codegen_->EmitBreak(cmd.target);
-        break;
-    }
-    __ bind(&skip);
-  }
-}
-
 #undef __
 
 
 void BackEdgeTable::PatchAt(Code* unoptimized_code,
                             Address pc,
                             BackEdgeState target_state,
                             Code* replacement_code) {
   static const int kInstrSize = Assembler::kInstrSize;
   Address pc_immediate_load_address =
       Assembler::target_address_from_return_address(pc);
@@ skipping 58 matching lines @@
          reinterpret_cast<uint32_t>(
              isolate->builtins()->OnStackReplacement()->entry()));
   return ON_STACK_REPLACEMENT;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS