--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/cpu/sparc/runtime_sparc.cpp	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,159 @@
+/*
+ * Copyright (c) 1998, 2016, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#ifdef COMPILER2
+#include "asm/macroAssembler.inline.hpp"
+#include "classfile/systemDictionary.hpp"
+#include "code/vmreg.hpp"
+#include "interpreter/interpreter.hpp"
+#include "memory/resourceArea.hpp"
+#include "nativeInst_sparc.hpp"
+#include "opto/runtime.hpp"
+#include "runtime/interfaceSupport.hpp"
+#include "runtime/sharedRuntime.hpp"
+#include "runtime/stubRoutines.hpp"
+#include "runtime/vframeArray.hpp"
+#include "utilities/globalDefinitions.hpp"
+#include "vmreg_sparc.inline.hpp"
+#endif
+
+
+#define __ masm->
+
+//------------------------------ generate_exception_blob ---------------------------
+// creates exception blob at the end
+// Using exception blob, this code is jumped from a compiled method.
+// (see emit_exception_handler in sparc.ad file)
+//
+// Given an exception pc at a call we call into the runtime for the
+// handler in this method. This handler might merely restore state
+// (i.e. callee save registers) unwind the frame and jump to the
+// exception handler for the nmethod if there is no Java level handler
+// for the nmethod.
+//
+// This code is entered with a jmp.
+//
+// Arguments:
+//   O0: exception oop
+//   O1: exception pc
+//
+// Results:
+//   O0: exception oop
+//   O1: exception pc in caller or ???
+//   destination: exception handler of caller
+//
+// Note: the exception pc MUST be at a call (precise debug information)
+//
+void OptoRuntime::generate_exception_blob() {
+  // allocate space for code
+  ResourceMark rm;
+  int pad = VerifyThread ? 256 : 0;// Extra slop space for more verify code
+
+  // setup code generation tools
+  // Measured 8/7/03 at 256 in 32bit debug build (no VerifyThread)
+  // Measured 8/7/03 at 528 in 32bit debug build (VerifyThread)
+  CodeBuffer buffer("exception_blob", 600+pad, 512);
+  MacroAssembler* masm     = new MacroAssembler(&buffer);
+
+  int framesize_in_bytes = __ total_frame_size_in_bytes(0);
+  int framesize_in_words = framesize_in_bytes / wordSize;
+  int framesize_in_slots = framesize_in_bytes / sizeof(jint);
+
+  Label L;
+
+  int start = __ offset();
+
+  __ verify_thread();
+  __ st_ptr(Oexception,  G2_thread, JavaThread::exception_oop_offset());
+  __ st_ptr(Oissuing_pc, G2_thread, JavaThread::exception_pc_offset());
+
+  // This call does all the hard work. It checks if an exception catch
+  // exists in the method.
+  // If so, it returns the handler address.
+  // If the nmethod has been deoptimized and it had a handler the handler
+  // address is the deopt blob unpack_with_exception entry.
+  //
+  // If no handler exists it prepares for stack-unwinding, restoring the callee-save
+  // registers of the frame being removed.
+  //
+  __ save_frame(0);
+
+  __ mov(G2_thread, O0);
+  __ set_last_Java_frame(SP, noreg);
+  __ save_thread(L7_thread_cache);
+
+  // This call can block at exit and nmethod can be deoptimized at that
+  // point. If the nmethod had a catch point we would jump to the
+  // now deoptimized catch point and fall thru the vanilla deopt
+  // path and lose the exception
+  // Sure would be simpler if this call didn't block!
+  __ call(CAST_FROM_FN_PTR(address, OptoRuntime::handle_exception_C), relocInfo::runtime_call_type);
+  __ delayed()->mov(L7_thread_cache, O0);
+
+  // Set an oopmap for the call site.  This oopmap will only be used if we
+  // are unwinding the stack.  Hence, all locations will be dead.
+  // Callee-saved registers will be the same as the frame above (i.e.,
+  // handle_exception_stub), since they were restored when we got the
+  // exception.
+
+  OopMapSet *oop_maps = new OopMapSet();
+  oop_maps->add_gc_map( __ offset()-start, new OopMap(framesize_in_slots, 0));
+
+  __ bind(L);
+  __ restore_thread(L7_thread_cache);
+  __ reset_last_Java_frame();
+
+  __ mov(O0, G3_scratch);             // Move handler address to temp
+  __ restore();
+
+  // Restore SP from L7 if the exception PC is a MethodHandle call site.
+  __ lduw(Address(G2_thread, JavaThread::is_method_handle_return_offset()), O7);
+  __ tst(O7);
+  __ movcc(Assembler::notZero, false, Assembler::icc, L7_mh_SP_save, SP);
+
+  // G3_scratch contains handler address
+  // Since this may be the deopt blob we must set O7 to look like we returned
+  // from the original pc that threw the exception
+
+  __ ld_ptr(G2_thread, JavaThread::exception_pc_offset(), O7);
+  __ sub(O7, frame::pc_return_offset, O7);
+
+
+  assert(Assembler::is_simm13(in_bytes(JavaThread::exception_oop_offset())), "exception offset overflows simm13, following ld instruction cannot be in delay slot");
+  __ ld_ptr(G2_thread, JavaThread::exception_oop_offset(), Oexception); // O0
+#ifdef ASSERT
+  __ st_ptr(G0, G2_thread, JavaThread::exception_handler_pc_offset());
+  __ st_ptr(G0, G2_thread, JavaThread::exception_pc_offset());
+#endif
+  __ JMP(G3_scratch, 0);
+  // Clear the exception oop so GC no longer processes it as a root.
+  __ delayed()->st_ptr(G0, G2_thread, JavaThread::exception_oop_offset());
+
+  // -------------
+  // make sure all code is generated
+  masm->flush();
+
+  _exception_blob = ExceptionBlob::create(&buffer, oop_maps, framesize_in_words);
+}