MIPS: Reland r11753: Fix try..finally.

src/mips/full-codegen-mips.cc

 // 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
@@ skipping 4511 matching lines @@
 
 void FullCodeGenerator::EnterFinallyBlock() {
   ASSERT(!result_register().is(a1));
   // Store result register while executing finally block.
   __ push(result_register());
   // Cook return address in link register to stack (smi encoded Code* delta).
   __ Subu(a1, ra, Operand(masm_->CodeObject()));
   ASSERT_EQ(1, kSmiTagSize + kSmiShiftSize);
   STATIC_ASSERT(0 == kSmiTag);
   __ Addu(a1, a1, Operand(a1));  // Convert to smi.
+
+  // Store result register while executing finally block.
+  __ push(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));
+  __ push(a1);
+
+  ExternalReference has_pending_message =
+      ExternalReference::address_of_has_pending_message(isolate());
+  __ li(at, Operand(has_pending_message));
+  __ lw(a1, MemOperand(at));
+  __ push(a1);
+
+  ExternalReference pending_message_script =
+      ExternalReference::address_of_pending_message_script(isolate());
+  __ li(at, Operand(pending_message_script));
+  __ lw(a1, MemOperand(at));
   __ push(a1);
 }
 
 
 void FullCodeGenerator::ExitFinallyBlock() {
   ASSERT(!result_register().is(a1));
+  // Restore pending message from stack.
+  __ pop(a1);
+  ExternalReference pending_message_script =
+      ExternalReference::address_of_pending_message_script(isolate());
+  __ li(at, Operand(pending_message_script));
+  __ sw(a1, MemOperand(at));
+
+  __ pop(a1);
+  ExternalReference has_pending_message =
+      ExternalReference::address_of_has_pending_message(isolate());
+  __ li(at, Operand(has_pending_message));
+  __ sw(a1, MemOperand(at));
+
+  __ pop(a1);
+  ExternalReference pending_message_obj =
+      ExternalReference::address_of_pending_message_obj(isolate());
+  __ li(at, Operand(pending_message_obj));
+  __ sw(a1, MemOperand(at));
+
   // Restore result register from stack.
   __ pop(a1);
+
   // Uncook return address and return.
   __ pop(result_register());
   ASSERT_EQ(1, kSmiTagSize + kSmiShiftSize);
   __ sra(a1, a1, 1);  // Un-smi-tag value.
   __ Addu(at, a1, Operand(masm_->CodeObject()));
   __ Jump(at);
 }
 
 
 #undef __
@@ skipping 22 matching lines @@
   *context_length = 0;
   return previous_;
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS