hotspot/src/cpu/sparc/vm/frame_sparc.cpp
author never
Mon, 02 May 2011 18:53:37 -0700
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child 9632 cd86c748c12b
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7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp Reviewed-by: kvn, twisti
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/*
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 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#include "precompiled.hpp"
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#include "interpreter/interpreter.hpp"
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#include "memory/resourceArea.hpp"
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#include "oops/markOop.hpp"
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#include "oops/methodOop.hpp"
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#include "oops/oop.inline.hpp"
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#include "runtime/frame.inline.hpp"
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#include "runtime/handles.inline.hpp"
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#include "runtime/javaCalls.hpp"
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#include "runtime/monitorChunk.hpp"
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#include "runtime/signature.hpp"
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#include "runtime/stubCodeGenerator.hpp"
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#include "runtime/stubRoutines.hpp"
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#include "vmreg_sparc.inline.hpp"
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#ifdef COMPILER1
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#include "c1/c1_Runtime1.hpp"
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#include "runtime/vframeArray.hpp"
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#endif
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void RegisterMap::pd_clear() {
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  if (_thread->has_last_Java_frame()) {
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    frame fr = _thread->last_frame();
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    _window = fr.sp();
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  } else {
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    _window = NULL;
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  }
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  _younger_window = NULL;
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}
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// Unified register numbering scheme: each 32-bits counts as a register
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// number, so all the V9 registers take 2 slots.
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const static int R_L_nums[] = {0+040,2+040,4+040,6+040,8+040,10+040,12+040,14+040};
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const static int R_I_nums[] = {0+060,2+060,4+060,6+060,8+060,10+060,12+060,14+060};
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const static int R_O_nums[] = {0+020,2+020,4+020,6+020,8+020,10+020,12+020,14+020};
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const static int R_G_nums[] = {0+000,2+000,4+000,6+000,8+000,10+000,12+000,14+000};
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static RegisterMap::LocationValidType bad_mask = 0;
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static RegisterMap::LocationValidType R_LIO_mask = 0;
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static bool register_map_inited = false;
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static void register_map_init() {
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  if (!register_map_inited) {
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    register_map_inited = true;
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    int i;
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    for (i = 0; i < 8; i++) {
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      assert(R_L_nums[i] < RegisterMap::location_valid_type_size, "in first chunk");
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      assert(R_I_nums[i] < RegisterMap::location_valid_type_size, "in first chunk");
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      assert(R_O_nums[i] < RegisterMap::location_valid_type_size, "in first chunk");
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      assert(R_G_nums[i] < RegisterMap::location_valid_type_size, "in first chunk");
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    }
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    bad_mask |= (1LL << R_O_nums[6]); // SP
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    bad_mask |= (1LL << R_O_nums[7]); // cPC
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    bad_mask |= (1LL << R_I_nums[6]); // FP
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    bad_mask |= (1LL << R_I_nums[7]); // rPC
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    bad_mask |= (1LL << R_G_nums[2]); // TLS
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    bad_mask |= (1LL << R_G_nums[7]); // reserved by libthread
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    for (i = 0; i < 8; i++) {
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      R_LIO_mask |= (1LL << R_L_nums[i]);
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      R_LIO_mask |= (1LL << R_I_nums[i]);
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      R_LIO_mask |= (1LL << R_O_nums[i]);
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    }
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  }
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}
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address RegisterMap::pd_location(VMReg regname) const {
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  register_map_init();
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  assert(regname->is_reg(), "sanity check");
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  // Only the GPRs get handled this way
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  if( !regname->is_Register())
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    return NULL;
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  // don't talk about bad registers
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  if ((bad_mask & ((LocationValidType)1 << regname->value())) != 0) {
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    return NULL;
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  }
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  // Convert to a GPR
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  Register reg;
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  int second_word = 0;
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  // 32-bit registers for in, out and local
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  if (!regname->is_concrete()) {
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    // HMM ought to return NULL for any non-concrete (odd) vmreg
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    // this all tied up in the fact we put out double oopMaps for
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    // register locations. When that is fixed we'd will return NULL
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    // (or assert here).
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    reg = regname->prev()->as_Register();
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#ifdef _LP64
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    second_word = sizeof(jint);
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#else
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    return NULL;
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#endif // _LP64
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  } else {
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    reg = regname->as_Register();
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  }
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  if (reg->is_out()) {
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    assert(_younger_window != NULL, "Younger window should be available");
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    return second_word + (address)&_younger_window[reg->after_save()->sp_offset_in_saved_window()];
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  }
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  if (reg->is_local() || reg->is_in()) {
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    assert(_window != NULL, "Window should be available");
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    return second_word + (address)&_window[reg->sp_offset_in_saved_window()];
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  }
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  // Only the window'd GPRs get handled this way; not the globals.
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  return NULL;
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}
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#ifdef ASSERT
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void RegisterMap::check_location_valid() {
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  register_map_init();
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  assert((_location_valid[0] & bad_mask) == 0, "cannot have special locations for SP,FP,TLS,etc.");
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}
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#endif
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// We are shifting windows.  That means we are moving all %i to %o,
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// getting rid of all current %l, and keeping all %g.  This is only
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// complicated if any of the location pointers for these are valid.
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// The normal case is that everything is in its standard register window
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// home, and _location_valid[0] is zero.  In that case, this routine
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// does exactly nothing.
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void RegisterMap::shift_individual_registers() {
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  if (!update_map())  return;  // this only applies to maps with locations
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  register_map_init();
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  check_location_valid();
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  LocationValidType lv = _location_valid[0];
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  LocationValidType lv0 = lv;
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  lv &= ~R_LIO_mask;  // clear %l, %o, %i regs
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  // if we cleared some non-%g locations, we may have to do some shifting
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  if (lv != lv0) {
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    // copy %i0-%i5 to %o0-%o5, if they have special locations
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    // This can happen in within stubs which spill argument registers
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    // around a dynamic link operation, such as resolve_opt_virtual_call.
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    for (int i = 0; i < 8; i++) {
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      if (lv0 & (1LL << R_I_nums[i])) {
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        _location[R_O_nums[i]] = _location[R_I_nums[i]];
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        lv |=  (1LL << R_O_nums[i]);
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      }
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    }
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  }
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  _location_valid[0] = lv;
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  check_location_valid();
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}
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bool frame::safe_for_sender(JavaThread *thread) {
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  address _SP = (address) sp();
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  address _FP = (address) fp();
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  address _UNEXTENDED_SP = (address) unextended_sp();
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  // sp must be within the stack
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  bool sp_safe = (_SP <= thread->stack_base()) &&
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                 (_SP >= thread->stack_base() - thread->stack_size());
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  if (!sp_safe) {
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    return false;
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  }
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  // unextended sp must be within the stack and above or equal sp
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  bool unextended_sp_safe = (_UNEXTENDED_SP <= thread->stack_base()) &&
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                            (_UNEXTENDED_SP >= _SP);
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  if (!unextended_sp_safe) return false;
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  // an fp must be within the stack and above (but not equal) sp
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  bool fp_safe = (_FP <= thread->stack_base()) &&
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                 (_FP > _SP);
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  // We know sp/unextended_sp are safe only fp is questionable here
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  // If the current frame is known to the code cache then we can attempt to
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  // to construct the sender and do some validation of it. This goes a long way
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  // toward eliminating issues when we get in frame construction code
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  if (_cb != NULL ) {
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    // First check if frame is complete and tester is reliable
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    // Unfortunately we can only check frame complete for runtime stubs and nmethod
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    // other generic buffer blobs are more problematic so we just assume they are
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    // ok. adapter blobs never have a frame complete and are never ok.
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    if (!_cb->is_frame_complete_at(_pc)) {
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      if (_cb->is_nmethod() || _cb->is_adapter_blob() || _cb->is_runtime_stub()) {
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        return false;
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      }
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    }
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    // Entry frame checks
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    if (is_entry_frame()) {
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      // an entry frame must have a valid fp.
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      if (!fp_safe) {
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        return false;
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      }
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      // Validate the JavaCallWrapper an entry frame must have
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      address jcw = (address)entry_frame_call_wrapper();
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      bool jcw_safe = (jcw <= thread->stack_base()) && ( jcw > _FP);
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      return jcw_safe;
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    }
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    intptr_t* younger_sp = sp();
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    intptr_t* _SENDER_SP = sender_sp(); // sender is actually just _FP
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    bool adjusted_stack = is_interpreted_frame();
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    address   sender_pc = (address)younger_sp[I7->sp_offset_in_saved_window()] + pc_return_offset;
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    // We must always be able to find a recognizable pc
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    CodeBlob* sender_blob = CodeCache::find_blob_unsafe(sender_pc);
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    if (sender_pc == NULL ||  sender_blob == NULL) {
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      return false;
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    }
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    // It should be safe to construct the sender though it might not be valid
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    frame sender(_SENDER_SP, younger_sp, adjusted_stack);
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    // Do we have a valid fp?
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    address sender_fp = (address) sender.fp();
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    // an fp must be within the stack and above (but not equal) current frame's _FP
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    bool sender_fp_safe = (sender_fp <= thread->stack_base()) &&
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                   (sender_fp > _FP);
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    if (!sender_fp_safe) {
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      return false;
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    }
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    // If the potential sender is the interpreter then we can do some more checking
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    if (Interpreter::contains(sender_pc)) {
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      return sender.is_interpreted_frame_valid(thread);
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    }
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    // Could just be some random pointer within the codeBlob
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    if (!sender.cb()->code_contains(sender_pc)) {
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      return false;
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    }
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    // We should never be able to see an adapter if the current frame is something from code cache
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    if (sender_blob->is_adapter_blob()) {
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      return false;
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    }
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    if( sender.is_entry_frame()) {
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      // Validate the JavaCallWrapper an entry frame must have
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      address jcw = (address)sender.entry_frame_call_wrapper();
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      bool jcw_safe = (jcw <= thread->stack_base()) && ( jcw > sender_fp);
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      return jcw_safe;
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    }
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    // If the frame size is 0 something is bad because every nmethod has a non-zero frame size
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    // because you must allocate window space
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    if (sender_blob->frame_size() == 0) {
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      assert(!sender_blob->is_nmethod(), "should count return address at least");
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      return false;
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    }
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    // The sender should positively be an nmethod or call_stub. On sparc we might in fact see something else.
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    // The cause of this is because at a save instruction the O7 we get is a leftover from an earlier
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    // window use. So if a runtime stub creates two frames (common in fastdebug/jvmg) then we see the
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    // stale pc. So if the sender blob is not something we'd expect we have little choice but to declare
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    // the stack unwalkable. pd_get_top_frame_for_signal_handler tries to recover from this by unwinding
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    // that initial frame and retrying.
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    if (!sender_blob->is_nmethod()) {
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      return false;
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    }
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    // Could put some more validation for the potential non-interpreted sender
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    // frame we'd create by calling sender if I could think of any. Wait for next crash in forte...
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    // One idea is seeing if the sender_pc we have is one that we'd expect to call to current cb
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    // We've validated the potential sender that would be created
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    return true;
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   319
  }
354
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diff changeset
   320
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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   321
  // Must be native-compiled frame. Since sender will try and use fp to find
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   322
  // linkages it must be safe
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diff changeset
   323
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   324
  if (!fp_safe) return false;
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   325
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   326
  // could try and do some more potential verification of native frame if we could think of some...
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   327
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   328
  return true;
1
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   329
}
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   330
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   331
// constructors
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   332
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   333
// Construct an unpatchable, deficient frame
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   334
frame::frame(intptr_t* sp, unpatchable_t, address pc, CodeBlob* cb) {
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   335
#ifdef _LP64
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   336
  assert( (((intptr_t)sp & (wordSize-1)) == 0), "frame constructor passed an invalid sp");
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   337
#endif
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   338
  _sp = sp;
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   339
  _younger_sp = NULL;
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   340
  _pc = pc;
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   341
  _cb = cb;
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   342
  _sp_adjustment_by_callee = 0;
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   343
  assert(pc == NULL && cb == NULL || pc != NULL, "can't have a cb and no pc!");
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   344
  if (_cb == NULL && _pc != NULL ) {
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   345
    _cb = CodeCache::find_blob(_pc);
489c9b5090e2 Initial load
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parents:
diff changeset
   346
  }
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   347
  _deopt_state = unknown;
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   348
#ifdef ASSERT
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   349
  if ( _cb != NULL && _cb->is_nmethod()) {
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diff changeset
   350
    // Without a valid unextended_sp() we can't convert the pc to "original"
489c9b5090e2 Initial load
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   351
    assert(!((nmethod*)_cb)->is_deopt_pc(_pc), "invariant broken");
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diff changeset
   352
  }
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   353
#endif // ASSERT
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diff changeset
   354
}
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parents:
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   355
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b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
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parents: 5419
diff changeset
   356
frame::frame(intptr_t* sp, intptr_t* younger_sp, bool younger_frame_is_interpreted) :
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parents: 5419
diff changeset
   357
  _sp(sp),
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
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parents: 5419
diff changeset
   358
  _younger_sp(younger_sp),
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
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parents: 5419
diff changeset
   359
  _deopt_state(unknown),
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
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parents: 5419
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   360
  _sp_adjustment_by_callee(0) {
1
489c9b5090e2 Initial load
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parents:
diff changeset
   361
  if (younger_sp == NULL) {
489c9b5090e2 Initial load
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parents:
diff changeset
   362
    // make a deficient frame which doesn't know where its PC is
489c9b5090e2 Initial load
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parents:
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   363
    _pc = NULL;
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parents:
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   364
    _cb = NULL;
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parents:
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   365
  } else {
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parents:
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   366
    _pc = (address)younger_sp[I7->sp_offset_in_saved_window()] + pc_return_offset;
489c9b5090e2 Initial load
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   367
    assert( (intptr_t*)younger_sp[FP->sp_offset_in_saved_window()] == (intptr_t*)((intptr_t)sp - STACK_BIAS), "younger_sp must be valid");
489c9b5090e2 Initial load
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parents:
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   368
    // Any frame we ever build should always "safe" therefore we should not have to call
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parents:
diff changeset
   369
    // find_blob_unsafe
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parents:
diff changeset
   370
    // In case of native stubs, the pc retrieved here might be
489c9b5090e2 Initial load
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parents:
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   371
    // wrong.  (the _last_native_pc will have the right value)
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parents:
diff changeset
   372
    // So do not put add any asserts on the _pc here.
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parents:
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   373
  }
5687
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
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parents: 5419
diff changeset
   374
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
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parents: 5419
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   375
  if (_pc != NULL)
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
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parents: 5419
diff changeset
   376
    _cb = CodeCache::find_blob(_pc);
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
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parents: 5419
diff changeset
   377
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
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parents: 5419
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   378
  // Check for MethodHandle call sites.
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
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parents: 5419
diff changeset
   379
  if (_cb != NULL) {
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
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parents: 5419
diff changeset
   380
    nmethod* nm = _cb->as_nmethod_or_null();
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
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parents: 5419
diff changeset
   381
    if (nm != NULL) {
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
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parents: 5419
diff changeset
   382
      if (nm->is_deopt_mh_entry(_pc) || nm->is_method_handle_return(_pc)) {
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
twisti
parents: 5419
diff changeset
   383
        _sp_adjustment_by_callee = (intptr_t*) ((intptr_t) sp[L7_mh_SP_save->sp_offset_in_saved_window()] + STACK_BIAS) - sp;
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
twisti
parents: 5419
diff changeset
   384
        // The SP is already adjusted by this MH call site, don't
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
twisti
parents: 5419
diff changeset
   385
        // overwrite this value with the wrong interpreter value.
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
twisti
parents: 5419
diff changeset
   386
        younger_frame_is_interpreted = false;
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
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parents: 5419
diff changeset
   387
      }
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
twisti
parents: 5419
diff changeset
   388
    }
1
489c9b5090e2 Initial load
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parents:
diff changeset
   389
  }
489c9b5090e2 Initial load
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parents:
diff changeset
   390
5687
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
twisti
parents: 5419
diff changeset
   391
  if (younger_frame_is_interpreted) {
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
twisti
parents: 5419
diff changeset
   392
    // compute adjustment to this frame's SP made by its interpreted callee
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
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parents: 5419
diff changeset
   393
    _sp_adjustment_by_callee = (intptr_t*) ((intptr_t) younger_sp[I5_savedSP->sp_offset_in_saved_window()] + STACK_BIAS) - sp;
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
twisti
parents: 5419
diff changeset
   394
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   395
5687
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
twisti
parents: 5419
diff changeset
   396
  // It is important that the frame is fully constructed when we do
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
twisti
parents: 5419
diff changeset
   397
  // this lookup as get_deopt_original_pc() needs a correct value for
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
twisti
parents: 5419
diff changeset
   398
  // unextended_sp() which uses _sp_adjustment_by_callee.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   399
  if (_pc != NULL) {
4752
67a506670cd0 6921352: JSR 292 needs its own deopt handler
twisti
parents: 4749
diff changeset
   400
    address original_pc = nmethod::get_deopt_original_pc(this);
67a506670cd0 6921352: JSR 292 needs its own deopt handler
twisti
parents: 4749
diff changeset
   401
    if (original_pc != NULL) {
67a506670cd0 6921352: JSR 292 needs its own deopt handler
twisti
parents: 4749
diff changeset
   402
      _pc = original_pc;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   403
      _deopt_state = is_deoptimized;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   404
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   405
      _deopt_state = not_deoptimized;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   406
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   407
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   408
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   409
489c9b5090e2 Initial load
duke
parents:
diff changeset
   410
bool frame::is_interpreted_frame() const  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   411
  return Interpreter::contains(pc());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   412
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   413
489c9b5090e2 Initial load
duke
parents:
diff changeset
   414
// sender_sp
489c9b5090e2 Initial load
duke
parents:
diff changeset
   415
489c9b5090e2 Initial load
duke
parents:
diff changeset
   416
intptr_t* frame::interpreter_frame_sender_sp() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   417
  assert(is_interpreted_frame(), "interpreted frame expected");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   418
  return fp();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   419
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   420
489c9b5090e2 Initial load
duke
parents:
diff changeset
   421
#ifndef CC_INTERP
489c9b5090e2 Initial load
duke
parents:
diff changeset
   422
void frame::set_interpreter_frame_sender_sp(intptr_t* sender_sp) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   423
  assert(is_interpreted_frame(), "interpreted frame expected");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   424
  Unimplemented();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   425
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   426
#endif // CC_INTERP
489c9b5090e2 Initial load
duke
parents:
diff changeset
   427
489c9b5090e2 Initial load
duke
parents:
diff changeset
   428
489c9b5090e2 Initial load
duke
parents:
diff changeset
   429
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   430
// Debugging aid
489c9b5090e2 Initial load
duke
parents:
diff changeset
   431
static frame nth_sender(int n) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   432
  frame f = JavaThread::current()->last_frame();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   433
489c9b5090e2 Initial load
duke
parents:
diff changeset
   434
  for(int i = 0; i < n; ++i)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   435
    f = f.sender((RegisterMap*)NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   436
489c9b5090e2 Initial load
duke
parents:
diff changeset
   437
  printf("first frame %d\n",          f.is_first_frame()       ? 1 : 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   438
  printf("interpreted frame %d\n",    f.is_interpreted_frame() ? 1 : 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   439
  printf("java frame %d\n",           f.is_java_frame()        ? 1 : 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   440
  printf("entry frame %d\n",          f.is_entry_frame()       ? 1 : 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   441
  printf("native frame %d\n",         f.is_native_frame()      ? 1 : 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   442
  if (f.is_compiled_frame()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   443
    if (f.is_deoptimized_frame())
489c9b5090e2 Initial load
duke
parents:
diff changeset
   444
      printf("deoptimized frame 1\n");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   445
    else
489c9b5090e2 Initial load
duke
parents:
diff changeset
   446
      printf("compiled frame 1\n");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   447
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   448
489c9b5090e2 Initial load
duke
parents:
diff changeset
   449
  return f;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   450
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   451
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   452
489c9b5090e2 Initial load
duke
parents:
diff changeset
   453
489c9b5090e2 Initial load
duke
parents:
diff changeset
   454
frame frame::sender_for_entry_frame(RegisterMap *map) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   455
  assert(map != NULL, "map must be set");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   456
  // Java frame called from C; skip all C frames and return top C
489c9b5090e2 Initial load
duke
parents:
diff changeset
   457
  // frame of that chunk as the sender
489c9b5090e2 Initial load
duke
parents:
diff changeset
   458
  JavaFrameAnchor* jfa = entry_frame_call_wrapper()->anchor();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   459
  assert(!entry_frame_is_first(), "next Java fp must be non zero");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   460
  assert(jfa->last_Java_sp() > _sp, "must be above this frame on stack");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   461
  intptr_t* last_Java_sp = jfa->last_Java_sp();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   462
  // Since we are walking the stack now this nested anchor is obviously walkable
489c9b5090e2 Initial load
duke
parents:
diff changeset
   463
  // even if it wasn't when it was stacked.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   464
  if (!jfa->walkable()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   465
    // Capture _last_Java_pc (if needed) and mark anchor walkable.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   466
    jfa->capture_last_Java_pc(_sp);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   467
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   468
  assert(jfa->last_Java_pc() != NULL, "No captured pc!");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   469
  map->clear();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   470
  map->make_integer_regs_unsaved();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   471
  map->shift_window(last_Java_sp, NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   472
  assert(map->include_argument_oops(), "should be set by clear");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   473
  return frame(last_Java_sp, frame::unpatchable, jfa->last_Java_pc());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   474
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   475
489c9b5090e2 Initial load
duke
parents:
diff changeset
   476
frame frame::sender_for_interpreter_frame(RegisterMap *map) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   477
  ShouldNotCallThis();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   478
  return sender(map);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   479
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   480
489c9b5090e2 Initial load
duke
parents:
diff changeset
   481
frame frame::sender_for_compiled_frame(RegisterMap *map) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   482
  ShouldNotCallThis();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   483
  return sender(map);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   484
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   485
489c9b5090e2 Initial load
duke
parents:
diff changeset
   486
frame frame::sender(RegisterMap* map) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   487
  assert(map != NULL, "map must be set");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   488
489c9b5090e2 Initial load
duke
parents:
diff changeset
   489
  assert(CodeCache::find_blob_unsafe(_pc) == _cb, "inconsistent");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   490
489c9b5090e2 Initial load
duke
parents:
diff changeset
   491
  // Default is not to follow arguments; update it accordingly below
489c9b5090e2 Initial load
duke
parents:
diff changeset
   492
  map->set_include_argument_oops(false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   493
489c9b5090e2 Initial load
duke
parents:
diff changeset
   494
  if (is_entry_frame()) return sender_for_entry_frame(map);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   495
5687
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
twisti
parents: 5419
diff changeset
   496
  intptr_t* younger_sp = sp();
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
twisti
parents: 5419
diff changeset
   497
  intptr_t* sp         = sender_sp();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   498
489c9b5090e2 Initial load
duke
parents:
diff changeset
   499
  // Note:  The version of this operation on any platform with callee-save
489c9b5090e2 Initial load
duke
parents:
diff changeset
   500
  //        registers must update the register map (if not null).
489c9b5090e2 Initial load
duke
parents:
diff changeset
   501
  //        In order to do this correctly, the various subtypes of
489c9b5090e2 Initial load
duke
parents:
diff changeset
   502
  //        of frame (interpreted, compiled, glue, native),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   503
  //        must be distinguished.  There is no need on SPARC for
489c9b5090e2 Initial load
duke
parents:
diff changeset
   504
  //        such distinctions, because all callee-save registers are
489c9b5090e2 Initial load
duke
parents:
diff changeset
   505
  //        preserved for all frames via SPARC-specific mechanisms.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   506
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   507
  //        *** HOWEVER, *** if and when we make any floating-point
489c9b5090e2 Initial load
duke
parents:
diff changeset
   508
  //        registers callee-saved, then we will have to copy over
489c9b5090e2 Initial load
duke
parents:
diff changeset
   509
  //        the RegisterMap update logic from the Intel code.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   510
489c9b5090e2 Initial load
duke
parents:
diff changeset
   511
  // The constructor of the sender must know whether this frame is interpreted so it can set the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   512
  // sender's _sp_adjustment_by_callee field.  An osr adapter frame was originally
489c9b5090e2 Initial load
duke
parents:
diff changeset
   513
  // interpreted but its pc is in the code cache (for c1 -> osr_frame_return_id stub), so it must be
489c9b5090e2 Initial load
duke
parents:
diff changeset
   514
  // explicitly recognized.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   515
5687
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
twisti
parents: 5419
diff changeset
   516
  bool frame_is_interpreted = is_interpreted_frame();
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
twisti
parents: 5419
diff changeset
   517
  if (frame_is_interpreted) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   518
    map->make_integer_regs_unsaved();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   519
    map->shift_window(sp, younger_sp);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   520
  } else if (_cb != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   521
    // Update the locations of implicitly saved registers to be their
489c9b5090e2 Initial load
duke
parents:
diff changeset
   522
    // addresses in the register save area.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   523
    // For %o registers, the addresses of %i registers in the next younger
489c9b5090e2 Initial load
duke
parents:
diff changeset
   524
    // frame are used.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   525
    map->shift_window(sp, younger_sp);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   526
    if (map->update_map()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   527
      // Tell GC to use argument oopmaps for some runtime stubs that need it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   528
      // For C1, the runtime stub might not have oop maps, so set this flag
489c9b5090e2 Initial load
duke
parents:
diff changeset
   529
      // outside of update_register_map.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   530
      map->set_include_argument_oops(_cb->caller_must_gc_arguments(map->thread()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   531
      if (_cb->oop_maps() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   532
        OopMapSet::update_register_map(this, map);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   533
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   534
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   535
  }
5687
b862d1f189bd 6930772: JSR 292 needs to support SPARC C1
twisti
parents: 5419
diff changeset
   536
  return frame(sp, younger_sp, frame_is_interpreted);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   537
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   538
489c9b5090e2 Initial load
duke
parents:
diff changeset
   539
489c9b5090e2 Initial load
duke
parents:
diff changeset
   540
void frame::patch_pc(Thread* thread, address pc) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   541
  if(thread == Thread::current()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   542
   StubRoutines::Sparc::flush_callers_register_windows_func()();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   543
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   544
  if (TracePcPatching) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   545
    // QQQ this assert is invalid (or too strong anyway) sice _pc could
489c9b5090e2 Initial load
duke
parents:
diff changeset
   546
    // be original pc and frame could have the deopt pc.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   547
    // assert(_pc == *O7_addr() + pc_return_offset, "frame has wrong pc");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   548
    tty->print_cr("patch_pc at address  0x%x [0x%x -> 0x%x] ", O7_addr(), _pc, pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   549
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   550
  _cb = CodeCache::find_blob(pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   551
  *O7_addr() = pc - pc_return_offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   552
  _cb = CodeCache::find_blob(_pc);
4752
67a506670cd0 6921352: JSR 292 needs its own deopt handler
twisti
parents: 4749
diff changeset
   553
  address original_pc = nmethod::get_deopt_original_pc(this);
67a506670cd0 6921352: JSR 292 needs its own deopt handler
twisti
parents: 4749
diff changeset
   554
  if (original_pc != NULL) {
67a506670cd0 6921352: JSR 292 needs its own deopt handler
twisti
parents: 4749
diff changeset
   555
    assert(original_pc == _pc, "expected original to be stored before patching");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   556
    _deopt_state = is_deoptimized;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   557
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   558
    _deopt_state = not_deoptimized;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   559
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   560
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   561
489c9b5090e2 Initial load
duke
parents:
diff changeset
   562
489c9b5090e2 Initial load
duke
parents:
diff changeset
   563
static bool sp_is_valid(intptr_t* old_sp, intptr_t* young_sp, intptr_t* sp) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   564
  return (((intptr_t)sp & (2*wordSize-1)) == 0 &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
   565
          sp <= old_sp &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
   566
          sp >= young_sp);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   567
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   568
489c9b5090e2 Initial load
duke
parents:
diff changeset
   569
489c9b5090e2 Initial load
duke
parents:
diff changeset
   570
/*
489c9b5090e2 Initial load
duke
parents:
diff changeset
   571
  Find the (biased) sp that is just younger than old_sp starting at sp.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   572
  If not found return NULL. Register windows are assumed to be flushed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   573
*/
489c9b5090e2 Initial load
duke
parents:
diff changeset
   574
intptr_t* frame::next_younger_sp_or_null(intptr_t* old_sp, intptr_t* sp) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   575
489c9b5090e2 Initial load
duke
parents:
diff changeset
   576
  intptr_t* previous_sp = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   577
  intptr_t* orig_sp = sp;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   578
489c9b5090e2 Initial load
duke
parents:
diff changeset
   579
  int max_frames = (old_sp - sp) / 16; // Minimum frame size is 16
489c9b5090e2 Initial load
duke
parents:
diff changeset
   580
  int max_frame2 = max_frames;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   581
  while(sp != old_sp && sp_is_valid(old_sp, orig_sp, sp)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   582
    if (max_frames-- <= 0)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   583
      // too many frames have gone by; invalid parameters given to this function
489c9b5090e2 Initial load
duke
parents:
diff changeset
   584
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   585
    previous_sp = sp;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   586
    sp = (intptr_t*)sp[FP->sp_offset_in_saved_window()];
489c9b5090e2 Initial load
duke
parents:
diff changeset
   587
    sp = (intptr_t*)((intptr_t)sp + STACK_BIAS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   588
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   589
489c9b5090e2 Initial load
duke
parents:
diff changeset
   590
  return (sp == old_sp ? previous_sp : NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   591
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   592
489c9b5090e2 Initial load
duke
parents:
diff changeset
   593
/*
489c9b5090e2 Initial load
duke
parents:
diff changeset
   594
  Determine if "sp" is a valid stack pointer. "sp" is assumed to be younger than
489c9b5090e2 Initial load
duke
parents:
diff changeset
   595
  "valid_sp". So if "sp" is valid itself then it should be possible to walk frames
489c9b5090e2 Initial load
duke
parents:
diff changeset
   596
  from "sp" to "valid_sp". The assumption is that the registers windows for the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   597
  thread stack in question are flushed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   598
*/
489c9b5090e2 Initial load
duke
parents:
diff changeset
   599
bool frame::is_valid_stack_pointer(intptr_t* valid_sp, intptr_t* sp) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   600
  return next_younger_sp_or_null(valid_sp, sp) != NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   601
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   602
489c9b5090e2 Initial load
duke
parents:
diff changeset
   603
489c9b5090e2 Initial load
duke
parents:
diff changeset
   604
bool frame::interpreter_frame_equals_unpacked_fp(intptr_t* fp) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   605
  assert(is_interpreted_frame(), "must be interpreter frame");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   606
  return this->fp() == fp;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   607
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   608
489c9b5090e2 Initial load
duke
parents:
diff changeset
   609
489c9b5090e2 Initial load
duke
parents:
diff changeset
   610
void frame::pd_gc_epilog() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   611
  if (is_interpreted_frame()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   612
    // set constant pool cache entry for interpreter
489c9b5090e2 Initial load
duke
parents:
diff changeset
   613
    methodOop m = interpreter_frame_method();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   614
489c9b5090e2 Initial load
duke
parents:
diff changeset
   615
    *interpreter_frame_cpoolcache_addr() = m->constants()->cache();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   616
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   617
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   618
489c9b5090e2 Initial load
duke
parents:
diff changeset
   619
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   620
bool frame::is_interpreted_frame_valid(JavaThread* thread) const {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   621
#ifdef CC_INTERP
489c9b5090e2 Initial load
duke
parents:
diff changeset
   622
  // Is there anything to do?
489c9b5090e2 Initial load
duke
parents:
diff changeset
   623
#else
489c9b5090e2 Initial load
duke
parents:
diff changeset
   624
  assert(is_interpreted_frame(), "Not an interpreted frame");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   625
  // These are reasonable sanity checks
489c9b5090e2 Initial load
duke
parents:
diff changeset
   626
  if (fp() == 0 || (intptr_t(fp()) & (2*wordSize-1)) != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   627
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   628
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   629
  if (sp() == 0 || (intptr_t(sp()) & (2*wordSize-1)) != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   630
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   631
  }
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   632
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   633
  const intptr_t interpreter_frame_initial_sp_offset = interpreter_frame_vm_local_words;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   634
  if (fp() + interpreter_frame_initial_sp_offset < sp()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   635
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   636
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   637
  // These are hacks to keep us out of trouble.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   638
  // The problem with these is that they mask other problems
489c9b5090e2 Initial load
duke
parents:
diff changeset
   639
  if (fp() <= sp()) {        // this attempts to deal with unsigned comparison above
489c9b5090e2 Initial load
duke
parents:
diff changeset
   640
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   641
  }
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   642
  // do some validation of frame elements
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   643
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   644
  // first the method
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   645
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   646
  methodOop m = *interpreter_frame_method_addr();
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   647
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   648
  // validate the method we'd find in this potential sender
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   649
  if (!Universe::heap()->is_valid_method(m)) return false;
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   650
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   651
  // stack frames shouldn't be much larger than max_stack elements
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   652
5419
f2e8cc8c12ea 6943304: remove tagged stack interpreter
twisti
parents: 4752
diff changeset
   653
  if (fp() - sp() > 1024 + m->max_stack()*Interpreter::stackElementSize) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   654
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   655
  }
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   656
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   657
  // validate bci/bcx
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   658
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   659
  intptr_t  bcx    = interpreter_frame_bcx();
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   660
  if (m->validate_bci_from_bcx(bcx) < 0) {
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   661
    return false;
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   662
  }
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   663
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   664
  // validate constantPoolCacheOop
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   665
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   666
  constantPoolCacheOop cp = *interpreter_frame_cache_addr();
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   667
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   668
  if (cp == NULL ||
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   669
      !Space::is_aligned(cp) ||
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   670
      !Universe::heap()->is_permanent((void*)cp)) return false;
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   671
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   672
  // validate locals
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   673
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   674
  address locals =  (address) *interpreter_frame_locals_addr();
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   675
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   676
  if (locals > thread->stack_base() || locals < (address) fp()) return false;
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   677
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   678
  // We'd have to be pretty unlucky to be mislead at this point
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   679
#endif /* CC_INTERP */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   680
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   681
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   682
489c9b5090e2 Initial load
duke
parents:
diff changeset
   683
489c9b5090e2 Initial load
duke
parents:
diff changeset
   684
// Windows have been flushed on entry (but not marked). Capture the pc that
489c9b5090e2 Initial load
duke
parents:
diff changeset
   685
// is the return address to the frame that contains "sp" as its stack pointer.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   686
// This pc resides in the called of the frame corresponding to "sp".
489c9b5090e2 Initial load
duke
parents:
diff changeset
   687
// As a side effect we mark this JavaFrameAnchor as having flushed the windows.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   688
// This side effect lets us mark stacked JavaFrameAnchors (stacked in the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   689
// call_helper) as flushed when we have flushed the windows for the most
489c9b5090e2 Initial load
duke
parents:
diff changeset
   690
// recent (i.e. current) JavaFrameAnchor. This saves useless flushing calls
489c9b5090e2 Initial load
duke
parents:
diff changeset
   691
// and lets us find the pc just once rather than multiple times as it did
489c9b5090e2 Initial load
duke
parents:
diff changeset
   692
// in the bad old _post_Java_state days.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   693
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   694
void JavaFrameAnchor::capture_last_Java_pc(intptr_t* sp) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   695
  if (last_Java_sp() != NULL && last_Java_pc() == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   696
    // try and find the sp just younger than _last_Java_sp
489c9b5090e2 Initial load
duke
parents:
diff changeset
   697
    intptr_t* _post_Java_sp = frame::next_younger_sp_or_null(last_Java_sp(), sp);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   698
    // Really this should never fail otherwise VM call must have non-standard
489c9b5090e2 Initial load
duke
parents:
diff changeset
   699
    // frame linkage (bad) or stack is not properly flushed (worse).
489c9b5090e2 Initial load
duke
parents:
diff changeset
   700
    guarantee(_post_Java_sp != NULL, "bad stack!");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   701
    _last_Java_pc = (address) _post_Java_sp[ I7->sp_offset_in_saved_window()] + frame::pc_return_offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   702
489c9b5090e2 Initial load
duke
parents:
diff changeset
   703
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   704
  set_window_flushed();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   705
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   706
489c9b5090e2 Initial load
duke
parents:
diff changeset
   707
void JavaFrameAnchor::make_walkable(JavaThread* thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   708
  if (walkable()) return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   709
  // Eventually make an assert
489c9b5090e2 Initial load
duke
parents:
diff changeset
   710
  guarantee(Thread::current() == (Thread*)thread, "only current thread can flush its registers");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   711
  // We always flush in case the profiler wants it but we won't mark
489c9b5090e2 Initial load
duke
parents:
diff changeset
   712
  // the windows as flushed unless we have a last_Java_frame
489c9b5090e2 Initial load
duke
parents:
diff changeset
   713
  intptr_t* sp = StubRoutines::Sparc::flush_callers_register_windows_func()();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   714
  if (last_Java_sp() != NULL ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   715
    capture_last_Java_pc(sp);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   716
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   717
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   718
489c9b5090e2 Initial load
duke
parents:
diff changeset
   719
intptr_t* frame::entry_frame_argument_at(int offset) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   720
  // convert offset to index to deal with tsi
489c9b5090e2 Initial load
duke
parents:
diff changeset
   721
  int index = (Interpreter::expr_offset_in_bytes(offset)/wordSize);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   722
489c9b5090e2 Initial load
duke
parents:
diff changeset
   723
  intptr_t* LSP = (intptr_t*) sp()[Lentry_args->sp_offset_in_saved_window()];
489c9b5090e2 Initial load
duke
parents:
diff changeset
   724
  return &LSP[index+1];
489c9b5090e2 Initial load
duke
parents:
diff changeset
   725
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   726
489c9b5090e2 Initial load
duke
parents:
diff changeset
   727
489c9b5090e2 Initial load
duke
parents:
diff changeset
   728
BasicType frame::interpreter_frame_result(oop* oop_result, jvalue* value_result) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   729
  assert(is_interpreted_frame(), "interpreted frame expected");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   730
  methodOop method = interpreter_frame_method();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   731
  BasicType type = method->result_type();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   732
489c9b5090e2 Initial load
duke
parents:
diff changeset
   733
  if (method->is_native()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   734
    // Prior to notifying the runtime of the method_exit the possible result
489c9b5090e2 Initial load
duke
parents:
diff changeset
   735
    // value is saved to l_scratch and d_scratch.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   736
489c9b5090e2 Initial load
duke
parents:
diff changeset
   737
#ifdef CC_INTERP
489c9b5090e2 Initial load
duke
parents:
diff changeset
   738
    interpreterState istate = get_interpreterState();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   739
    intptr_t* l_scratch = (intptr_t*) &istate->_native_lresult;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   740
    intptr_t* d_scratch = (intptr_t*) &istate->_native_fresult;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   741
#else /* CC_INTERP */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   742
    intptr_t* l_scratch = fp() + interpreter_frame_l_scratch_fp_offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   743
    intptr_t* d_scratch = fp() + interpreter_frame_d_scratch_fp_offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   744
#endif /* CC_INTERP */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   745
489c9b5090e2 Initial load
duke
parents:
diff changeset
   746
    address l_addr = (address)l_scratch;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   747
#ifdef _LP64
489c9b5090e2 Initial load
duke
parents:
diff changeset
   748
    // On 64-bit the result for 1/8/16/32-bit result types is in the other
489c9b5090e2 Initial load
duke
parents:
diff changeset
   749
    // word half
489c9b5090e2 Initial load
duke
parents:
diff changeset
   750
    l_addr += wordSize/2;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   751
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   752
489c9b5090e2 Initial load
duke
parents:
diff changeset
   753
    switch (type) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   754
      case T_OBJECT:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   755
      case T_ARRAY: {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   756
#ifdef CC_INTERP
489c9b5090e2 Initial load
duke
parents:
diff changeset
   757
        *oop_result = istate->_oop_temp;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   758
#else
489c9b5090e2 Initial load
duke
parents:
diff changeset
   759
        oop obj = (oop) at(interpreter_frame_oop_temp_offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   760
        assert(obj == NULL || Universe::heap()->is_in(obj), "sanity check");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   761
        *oop_result = obj;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   762
#endif // CC_INTERP
489c9b5090e2 Initial load
duke
parents:
diff changeset
   763
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   764
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   765
489c9b5090e2 Initial load
duke
parents:
diff changeset
   766
      case T_BOOLEAN : { jint* p = (jint*)l_addr; value_result->z = (jboolean)((*p) & 0x1); break; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   767
      case T_BYTE    : { jint* p = (jint*)l_addr; value_result->b = (jbyte)((*p) & 0xff); break; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   768
      case T_CHAR    : { jint* p = (jint*)l_addr; value_result->c = (jchar)((*p) & 0xffff); break; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   769
      case T_SHORT   : { jint* p = (jint*)l_addr; value_result->s = (jshort)((*p) & 0xffff); break; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   770
      case T_INT     : value_result->i = *(jint*)l_addr; break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   771
      case T_LONG    : value_result->j = *(jlong*)l_scratch; break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   772
      case T_FLOAT   : value_result->f = *(jfloat*)d_scratch; break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   773
      case T_DOUBLE  : value_result->d = *(jdouble*)d_scratch; break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   774
      case T_VOID    : /* Nothing to do */ break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   775
      default        : ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   776
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   777
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   778
    intptr_t* tos_addr = interpreter_frame_tos_address();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   779
489c9b5090e2 Initial load
duke
parents:
diff changeset
   780
    switch(type) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   781
      case T_OBJECT:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   782
      case T_ARRAY: {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   783
        oop obj = (oop)*tos_addr;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   784
        assert(obj == NULL || Universe::heap()->is_in(obj), "sanity check");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   785
        *oop_result = obj;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   786
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   787
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   788
      case T_BOOLEAN : { jint* p = (jint*)tos_addr; value_result->z = (jboolean)((*p) & 0x1); break; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   789
      case T_BYTE    : { jint* p = (jint*)tos_addr; value_result->b = (jbyte)((*p) & 0xff); break; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   790
      case T_CHAR    : { jint* p = (jint*)tos_addr; value_result->c = (jchar)((*p) & 0xffff); break; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   791
      case T_SHORT   : { jint* p = (jint*)tos_addr; value_result->s = (jshort)((*p) & 0xffff); break; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   792
      case T_INT     : value_result->i = *(jint*)tos_addr; break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   793
      case T_LONG    : value_result->j = *(jlong*)tos_addr; break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   794
      case T_FLOAT   : value_result->f = *(jfloat*)tos_addr; break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   795
      case T_DOUBLE  : value_result->d = *(jdouble*)tos_addr; break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   796
      case T_VOID    : /* Nothing to do */ break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   797
      default        : ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   798
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   799
  };
489c9b5090e2 Initial load
duke
parents:
diff changeset
   800
489c9b5090e2 Initial load
duke
parents:
diff changeset
   801
  return type;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   802
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   803
489c9b5090e2 Initial load
duke
parents:
diff changeset
   804
// Lesp pointer is one word lower than the top item on the stack.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   805
intptr_t* frame::interpreter_frame_tos_at(jint offset) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   806
  int index = (Interpreter::expr_offset_in_bytes(offset)/wordSize) - 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   807
  return &interpreter_frame_tos_address()[index];
489c9b5090e2 Initial load
duke
parents:
diff changeset
   808
}
9437
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   809
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   810
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   811
#ifdef ASSERT
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   812
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   813
#define DESCRIBE_FP_OFFSET(name) \
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   814
  values.describe(-1, fp() + frame::name##_offset, #name)
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   815
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   816
void frame::describe_pd(FrameValues& values, int frame_no) {
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   817
  for (int w = 0; w < frame::register_save_words; w++) {
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   818
    values.describe(frame_no, sp() + w, err_msg("register save area word %d", w), 1);
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   819
  }
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   820
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   821
  if (is_interpreted_frame()) {
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   822
    DESCRIBE_FP_OFFSET(interpreter_frame_d_scratch_fp);
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   823
    DESCRIBE_FP_OFFSET(interpreter_frame_l_scratch_fp);
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   824
    DESCRIBE_FP_OFFSET(interpreter_frame_padding);
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   825
    DESCRIBE_FP_OFFSET(interpreter_frame_oop_temp);
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   826
  }
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   827
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   828
  if (!is_compiled_frame()) {
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   829
    if (frame::callee_aggregate_return_pointer_words != 0) {
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   830
      values.describe(frame_no, sp() + frame::callee_aggregate_return_pointer_sp_offset, "callee_aggregate_return_pointer_word");
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   831
    }
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   832
    for (int w = 0; w < frame::callee_register_argument_save_area_words; w++) {
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   833
      values.describe(frame_no, sp() + frame::callee_register_argument_save_area_sp_offset + w,
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   834
                      err_msg("callee_register_argument_save_area_words %d", w));
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   835
    }
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   836
  }
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   837
}
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   838
9981851b4b8c 7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents: 7397
diff changeset
   839
#endif