MIPS: Switch full-codegen from StackHandlers to handler table.

src/mips64/code-stubs-mips64.cc

Index: src/mips64/code-stubs-mips64.cc
diff --git a/src/mips64/code-stubs-mips64.cc b/src/mips64/code-stubs-mips64.cc
index 74477b557bff04bb9cee26c9f98a1be43ea6b605..0f83a613c162fb93c71d0dee56b2dcbd051a6dd6 100644
--- a/src/mips64/code-stubs-mips64.cc
+++ b/src/mips64/code-stubs-mips64.cc
@@ -1173,9 +1173,8 @@ void CEntryStub::Generate(MacroAssembler* masm) {
   __ li(fp, Operand(pending_handler_fp_address));
   __ ld(fp, MemOperand(fp));
 
-  // If the handler is a JS frame, restore the context to the frame.
-  // (kind == ENTRY) == (fp == 0) == (cp == 0), so we could test either fp
-  // or cp.
+  // If the handler is a JS frame, restore the context to the frame. Note that
+  // the context will be set to (cp == 0) for non-JS frames.
   Label zero;
   __ Branch(&zero, eq, cp, Operand(zero_reg));
   __ sd(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
@@ -1281,7 +1280,7 @@ void JSEntryStub::Generate(MacroAssembler* masm) {
   handler_offset_ = handler_entry.pos();
   // Caught exception: Store result (exception) in the pending exception
   // field in the JSEnv and return a failure sentinel.  Coming in here the
-  // fp will be invalid because the PushTryHandler below sets it to 0 to
+  // fp will be invalid because the PushStackHandler below sets it to 0 to
   // signal the existence of the JSEntry frame.
   __ li(a4, Operand(ExternalReference(Isolate::kPendingExceptionAddress,
                                       isolate)));
@@ -1290,10 +1289,9 @@ void JSEntryStub::Generate(MacroAssembler* masm) {
   __ b(&exit);  // b exposes branch delay slot.
   __ nop();   // Branch delay slot nop.
 
-  // Invoke: Link this frame into the handler chain.  There's only one
-  // handler block in this code object, so its index is 0.
+  // Invoke: Link this frame into the handler chain.
   __ bind(&invoke);
-  __ PushTryHandler(StackHandler::JS_ENTRY, 0);
+  __ PushStackHandler();
   // If an exception not caught by another handler occurs, this handler
   // returns control to the code after the bal(&invoke) above, which
   // restores all kCalleeSaved registers (including cp and fp) to their
@@ -1337,7 +1335,7 @@ void JSEntryStub::Generate(MacroAssembler* masm) {
   __ Call(t9);
 
   // Unlink this frame from the handler chain.
-  __ PopTryHandler();
+  __ PopStackHandler();
 
   __ bind(&exit);  // v0 holds result
   // Check if the current stack frame is marked as the outermost JS frame.