--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cpu/ppc/vm/frame_ppc.cpp	Fri Aug 02 16:46:45 2013 +0200
@@ -0,0 +1,306 @@
+/*
+ * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2012, 2013 SAP AG. 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"
+#include "interpreter/interpreter.hpp"
+#include "memory/resourceArea.hpp"
+#include "oops/markOop.hpp"
+#include "oops/method.hpp"
+#include "oops/oop.inline.hpp"
+#include "runtime/frame.inline.hpp"
+#include "runtime/handles.inline.hpp"
+#include "runtime/javaCalls.hpp"
+#include "runtime/monitorChunk.hpp"
+#include "runtime/signature.hpp"
+#include "runtime/stubCodeGenerator.hpp"
+#include "runtime/stubRoutines.hpp"
+#include "vmreg_ppc.inline.hpp"
+#ifdef COMPILER1
+#include "c1/c1_Runtime1.hpp"
+#include "runtime/vframeArray.hpp"
+#endif
+
+#ifndef CC_INTERP
+#error "CC_INTERP must be defined on PPC64"
+#endif
+
+#ifdef ASSERT
+void RegisterMap::check_location_valid() {
+}
+#endif // ASSERT
+
+bool frame::safe_for_sender(JavaThread *thread) {
+  bool safe = false;
+  address   cursp = (address)sp();
+  address   curfp = (address)fp();
+  if ((cursp != NULL && curfp != NULL &&
+      (cursp <= thread->stack_base() && cursp >= thread->stack_base() - thread->stack_size())) &&
+      (curfp <= thread->stack_base() && curfp >= thread->stack_base() - thread->stack_size())) {
+      safe = true;
+  }
+  return safe;
+}
+
+bool frame::is_interpreted_frame() const  {
+  return Interpreter::contains(pc());
+}
+
+frame frame::sender_for_entry_frame(RegisterMap *map) const {
+  assert(map != NULL, "map must be set");
+  // Java frame called from C; skip all C frames and return top C
+  // frame of that chunk as the sender.
+  JavaFrameAnchor* jfa = entry_frame_call_wrapper()->anchor();
+  assert(!entry_frame_is_first(), "next Java fp must be non zero");
+  assert(jfa->last_Java_sp() > _sp, "must be above this frame on stack");
+  map->clear();
+  assert(map->include_argument_oops(), "should be set by clear");
+
+  if (jfa->last_Java_pc() != NULL) {
+    frame fr(jfa->last_Java_sp(), jfa->last_Java_pc());
+    return fr;
+  }
+  // Last_java_pc is not set, if we come here from compiled code. The
+  // constructor retrieves the PC from the stack.
+  frame fr(jfa->last_Java_sp());
+  return fr;
+}
+
+frame frame::sender_for_interpreter_frame(RegisterMap *map) const {
+  // Pass callers initial_caller_sp as unextended_sp.
+  return frame(sender_sp(), sender_pc(), (intptr_t*)((parent_ijava_frame_abi *)callers_abi())->initial_caller_sp);
+}
+
+frame frame::sender_for_compiled_frame(RegisterMap *map) const {
+  assert(map != NULL, "map must be set");
+
+  // Frame owned by compiler.
+  address pc = *compiled_sender_pc_addr(_cb);
+  frame caller(compiled_sender_sp(_cb), pc);
+
+  // Now adjust the map.
+
+  // Get the rest.
+  if (map->update_map()) {
+    // Tell GC to use argument oopmaps for some runtime stubs that need it.
+    map->set_include_argument_oops(_cb->caller_must_gc_arguments(map->thread()));
+    if (_cb->oop_maps() != NULL) {
+      OopMapSet::update_register_map(this, map);
+    }
+  }
+
+  return caller;
+}
+
+intptr_t* frame::compiled_sender_sp(CodeBlob* cb) const {
+  return sender_sp();
+}
+
+address* frame::compiled_sender_pc_addr(CodeBlob* cb) const {
+  return sender_pc_addr();
+}
+
+frame frame::sender(RegisterMap* map) const {
+  // Default is we do have to follow them. The sender_for_xxx will
+  // update it accordingly.
+  map->set_include_argument_oops(false);
+
+  if (is_entry_frame())       return sender_for_entry_frame(map);
+  if (is_interpreted_frame()) return sender_for_interpreter_frame(map);
+  assert(_cb == CodeCache::find_blob(pc()),"Must be the same");
+
+  if (_cb != NULL) {
+    return sender_for_compiled_frame(map);
+  }
+  // Must be native-compiled frame, i.e. the marshaling code for native
+  // methods that exists in the core system.
+  return frame(sender_sp(), sender_pc());
+}
+
+void frame::patch_pc(Thread* thread, address pc) {
+  if (TracePcPatching) {
+    tty->print_cr("patch_pc at address " PTR_FORMAT " [" PTR_FORMAT " -> " PTR_FORMAT "]",
+                  &((address*) _sp)[-1], ((address*) _sp)[-1], pc);
+  }
+  own_abi()->lr = (uint64_t)pc;
+  _cb = CodeCache::find_blob(pc);
+  if (_cb != NULL && _cb->is_nmethod() && ((nmethod*)_cb)->is_deopt_pc(_pc)) {
+    address orig = (((nmethod*)_cb)->get_original_pc(this));
+    assert(orig == _pc, "expected original to be stored before patching");
+    _deopt_state = is_deoptimized;
+    // Leave _pc as is.
+  } else {
+    _deopt_state = not_deoptimized;
+    _pc = pc;
+  }
+}
+
+void frame::pd_gc_epilog() {
+  if (is_interpreted_frame()) {
+    // Set constant pool cache entry for interpreter.
+    Method* m = interpreter_frame_method();
+
+    *interpreter_frame_cpoolcache_addr() = m->constants()->cache();
+  }
+}
+
+bool frame::is_interpreted_frame_valid(JavaThread* thread) const {
+  // Is there anything to do?
+  assert(is_interpreted_frame(), "Not an interpreted frame");
+  return true;
+}
+
+BasicType frame::interpreter_frame_result(oop* oop_result, jvalue* value_result) {
+  assert(is_interpreted_frame(), "interpreted frame expected");
+  Method* method = interpreter_frame_method();
+  BasicType type = method->result_type();
+
+#ifdef CC_INTERP
+  if (method->is_native()) {
+    // Prior to calling into the runtime to notify the method exit the possible
+    // result value is saved into the interpreter frame.
+    interpreterState istate = get_interpreterState();
+    address lresult = (address)istate + in_bytes(BytecodeInterpreter::native_lresult_offset());
+    address fresult = (address)istate + in_bytes(BytecodeInterpreter::native_fresult_offset());
+
+    switch (method->result_type()) {
+      case T_OBJECT:
+      case T_ARRAY: {
+        oop* obj_p = *(oop**)lresult;
+        oop obj = (obj_p == NULL) ? NULL : *obj_p;
+        assert(obj == NULL || Universe::heap()->is_in(obj), "sanity check");
+        *oop_result = obj;
+        break;
+      }
+      // We use std/stfd to store the values.
+      case T_BOOLEAN : value_result->z = (jboolean) *(unsigned long*)lresult; break;
+      case T_INT     : value_result->i = (jint)     *(long*)lresult;          break;
+      case T_CHAR    : value_result->c = (jchar)    *(unsigned long*)lresult; break;
+      case T_SHORT   : value_result->s = (jshort)   *(long*)lresult;          break;
+      case T_BYTE    : value_result->z = (jbyte)    *(long*)lresult;          break;
+      case T_LONG    : value_result->j = (jlong)    *(long*)lresult;          break;
+      case T_FLOAT   : value_result->f = (jfloat)   *(double*)fresult;        break;
+      case T_DOUBLE  : value_result->d = (jdouble)  *(double*)fresult;        break;
+      case T_VOID    : /* Nothing to do */ break;
+      default        : ShouldNotReachHere();
+    }
+  } else {
+    intptr_t* tos_addr = interpreter_frame_tos_address();
+    switch (method->result_type()) {
+      case T_OBJECT:
+      case T_ARRAY: {
+        oop obj = *(oop*)tos_addr;
+        assert(obj == NULL || Universe::heap()->is_in(obj), "sanity check");
+        *oop_result = obj;
+      }
+      case T_BOOLEAN : value_result->z = (jboolean) *(jint*)tos_addr; break;
+      case T_BYTE    : value_result->b = (jbyte) *(jint*)tos_addr; break;
+      case T_CHAR    : value_result->c = (jchar) *(jint*)tos_addr; break;
+      case T_SHORT   : value_result->s = (jshort) *(jint*)tos_addr; break;
+      case T_INT     : value_result->i = *(jint*)tos_addr; break;
+      case T_LONG    : value_result->j = *(jlong*)tos_addr; break;
+      case T_FLOAT   : value_result->f = *(jfloat*)tos_addr; break;
+      case T_DOUBLE  : value_result->d = *(jdouble*)tos_addr; break;
+      case T_VOID    : /* Nothing to do */ break;
+      default        : ShouldNotReachHere();
+    }
+  }
+#else
+  Unimplemented();
+#endif
+  return type;
+}
+
+#ifndef PRODUCT
+
+void frame::describe_pd(FrameValues& values, int frame_no) {
+  if (is_interpreted_frame()) {
+#ifdef CC_INTERP
+    interpreterState istate = get_interpreterState();
+    values.describe(frame_no, (intptr_t*)istate, "istate");
+    values.describe(frame_no, (intptr_t*)&(istate->_thread), " thread");
+    values.describe(frame_no, (intptr_t*)&(istate->_bcp), " bcp");
+    values.describe(frame_no, (intptr_t*)&(istate->_locals), " locals");
+    values.describe(frame_no, (intptr_t*)&(istate->_constants), " constants");
+    values.describe(frame_no, (intptr_t*)&(istate->_method), err_msg(" method = %s", istate->_method->name_and_sig_as_C_string()));
+    values.describe(frame_no, (intptr_t*)&(istate->_mdx), " mdx");
+    values.describe(frame_no, (intptr_t*)&(istate->_stack), " stack");
+    values.describe(frame_no, (intptr_t*)&(istate->_msg), err_msg(" msg = %s", BytecodeInterpreter::C_msg(istate->_msg)));
+    values.describe(frame_no, (intptr_t*)&(istate->_result), " result");
+    values.describe(frame_no, (intptr_t*)&(istate->_prev_link), " prev_link");
+    values.describe(frame_no, (intptr_t*)&(istate->_oop_temp), " oop_temp");
+    values.describe(frame_no, (intptr_t*)&(istate->_stack_base), " stack_base");
+    values.describe(frame_no, (intptr_t*)&(istate->_stack_limit), " stack_limit");
+    values.describe(frame_no, (intptr_t*)&(istate->_monitor_base), " monitor_base");
+    values.describe(frame_no, (intptr_t*)&(istate->_frame_bottom), " frame_bottom");
+    values.describe(frame_no, (intptr_t*)&(istate->_last_Java_pc), " last_Java_pc");
+    values.describe(frame_no, (intptr_t*)&(istate->_last_Java_fp), " last_Java_fp");
+    values.describe(frame_no, (intptr_t*)&(istate->_last_Java_sp), " last_Java_sp");
+    values.describe(frame_no, (intptr_t*)&(istate->_self_link), " self_link");
+    values.describe(frame_no, (intptr_t*)&(istate->_native_fresult), " native_fresult");
+    values.describe(frame_no, (intptr_t*)&(istate->_native_lresult), " native_lresult");
+#else
+    Unimplemented();
+#endif
+  }
+}
+#endif
+
+void frame::adjust_unextended_sp() {
+  // If we are returning to a compiled MethodHandle call site, the
+  // saved_fp will in fact be a saved value of the unextended SP. The
+  // simplest way to tell whether we are returning to such a call site
+  // is as follows:
+
+  if (is_compiled_frame() && false /*is_at_mh_callsite()*/) {  // TODO PPC port
+    // If the sender PC is a deoptimization point, get the original
+    // PC. For MethodHandle call site the unextended_sp is stored in
+    // saved_fp.
+    _unextended_sp = _fp - _cb->frame_size();
+
+#ifdef ASSERT
+    nmethod *sender_nm = _cb->as_nmethod_or_null();
+    assert(sender_nm && *_sp == *_unextended_sp, "backlink changed");
+
+    intptr_t* sp = _unextended_sp;  // check if stack can be walked from here
+    for (int x = 0; x < 5; ++x) {   // check up to a couple of backlinks
+      intptr_t* prev_sp = *(intptr_t**)sp;
+      if (prev_sp == 0) break;      // end of stack
+      assert(prev_sp>sp, "broken stack");
+      sp = prev_sp;
+    }
+
+    if (sender_nm->is_deopt_mh_entry(_pc)) { // checks for deoptimization
+      address original_pc = sender_nm->get_original_pc(this);
+      assert(sender_nm->insts_contains(original_pc), "original PC must be in nmethod");
+      assert(sender_nm->is_method_handle_return(original_pc), "must be");
+    }
+#endif
+  }
+}
+
+intptr_t *frame::initial_deoptimization_info() {
+  // unused... but returns fp() to minimize changes introduced by 7087445
+  return fp();
+}