jdk8-mips64-public/hotspot: src/cpu/ppc/vm/frame_ppc.cpp@41b780b43b74 (annotated)

src/cpu/ppc/vm/frame_ppc.cpp@41b780b43b74 (annotated)

src/cpu/ppc/vm/frame_ppc.cpp

Wed, 27 Nov 2013 16:16:21 -0800

author: goetz
date: Wed, 27 Nov 2013 16:16:21 -0800
changeset 6490: 41b780b43b74
parent 6483: 018b357638aa
child 6495: 67fa91961822
permissions: -rw-r--r--

8029015: PPC64 (part 216): opto: trap based null and range checks
Summary: On PPC64 use tdi instruction that does a compare and raises SIGTRAP for NULL and range checks.
Reviewed-by: kvn

 /*
  * 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) ? (oop)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();
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/cpu/ppc/vm/frame_ppc.cpp@41b780b43b74 (annotated)

src/cpu/ppc/vm/frame_ppc.cpp