frame_ppc.cpp revision 9751:4a24de859a87 
1/*
2 * Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2012, 2015 SAP AG. All rights reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26#include "precompiled.hpp"
27#include "interpreter/interpreter.hpp"
28#include "memory/resourceArea.hpp"
29#include "oops/markOop.hpp"
30#include "oops/method.hpp"
31#include "oops/oop.inline.hpp"
32#include "runtime/frame.inline.hpp"
33#include "runtime/handles.inline.hpp"
34#include "runtime/javaCalls.hpp"
35#include "runtime/monitorChunk.hpp"
36#include "runtime/signature.hpp"
37#include "runtime/stubCodeGenerator.hpp"
38#include "runtime/stubRoutines.hpp"
39#ifdef COMPILER1
40#include "c1/c1_Runtime1.hpp"
41#include "runtime/vframeArray.hpp"
42#endif
43
44#ifdef ASSERT
45void RegisterMap::check_location_valid() {
46}
47#endif // ASSERT
48
49bool frame::safe_for_sender(JavaThread *thread) {
50  bool safe = false;
51  address   cursp = (address)sp();
52  address   curfp = (address)fp();
53  if ((cursp != NULL && curfp != NULL &&
54      (cursp <= thread->stack_base() && cursp >= thread->stack_base() - thread->stack_size())) &&
55      (curfp <= thread->stack_base() && curfp >= thread->stack_base() - thread->stack_size())) {
56      safe = true;
57  }
58  return safe;
59}
60
61bool frame::is_interpreted_frame() const  {
62  return Interpreter::contains(pc());
63}
64
65frame frame::sender_for_entry_frame(RegisterMap *map) const {
66  assert(map != NULL, "map must be set");
67  // Java frame called from C; skip all C frames and return top C
68  // frame of that chunk as the sender.
69  JavaFrameAnchor* jfa = entry_frame_call_wrapper()->anchor();
70  assert(!entry_frame_is_first(), "next Java fp must be non zero");
71  assert(jfa->last_Java_sp() > _sp, "must be above this frame on stack");
72  map->clear();
73  assert(map->include_argument_oops(), "should be set by clear");
74
75  if (jfa->last_Java_pc() != NULL) {
76    frame fr(jfa->last_Java_sp(), jfa->last_Java_pc());
77    return fr;
78  }
79  // Last_java_pc is not set, if we come here from compiled code. The
80  // constructor retrieves the PC from the stack.
81  frame fr(jfa->last_Java_sp());
82  return fr;
83}
84
85frame frame::sender_for_interpreter_frame(RegisterMap *map) const {
86  // Pass callers initial_caller_sp as unextended_sp.
87  return frame(sender_sp(), sender_pc(),
88               CC_INTERP_ONLY((intptr_t*)((parent_ijava_frame_abi *)callers_abi())->initial_caller_sp)
89               NOT_CC_INTERP((intptr_t*)get_ijava_state()->sender_sp)
90               );
91}
92
93frame frame::sender_for_compiled_frame(RegisterMap *map) const {
94  assert(map != NULL, "map must be set");
95
96  // Frame owned by compiler.
97  address pc = *compiled_sender_pc_addr(_cb);
98  frame caller(compiled_sender_sp(_cb), pc);
99
100  // Now adjust the map.
101
102  // Get the rest.
103  if (map->update_map()) {
104    // Tell GC to use argument oopmaps for some runtime stubs that need it.
105    map->set_include_argument_oops(_cb->caller_must_gc_arguments(map->thread()));
106    if (_cb->oop_maps() != NULL) {
107      OopMapSet::update_register_map(this, map);
108    }
109  }
110
111  return caller;
112}
113
114intptr_t* frame::compiled_sender_sp(CodeBlob* cb) const {
115  return sender_sp();
116}
117
118address* frame::compiled_sender_pc_addr(CodeBlob* cb) const {
119  return sender_pc_addr();
120}
121
122frame frame::sender(RegisterMap* map) const {
123  // Default is we do have to follow them. The sender_for_xxx will
124  // update it accordingly.
125  map->set_include_argument_oops(false);
126
127  if (is_entry_frame())       return sender_for_entry_frame(map);
128  if (is_interpreted_frame()) return sender_for_interpreter_frame(map);
129  assert(_cb == CodeCache::find_blob(pc()),"Must be the same");
130
131  if (_cb != NULL) {
132    return sender_for_compiled_frame(map);
133  }
134  // Must be native-compiled frame, i.e. the marshaling code for native
135  // methods that exists in the core system.
136  return frame(sender_sp(), sender_pc());
137}
138
139void frame::patch_pc(Thread* thread, address pc) {
140  if (TracePcPatching) {
141    tty->print_cr("patch_pc at address " PTR_FORMAT " [" PTR_FORMAT " -> " PTR_FORMAT "]",
142                  p2i(&((address*) _sp)[-1]), p2i(((address*) _sp)[-1]), p2i(pc));
143  }
144  own_abi()->lr = (uint64_t)pc;
145  _cb = CodeCache::find_blob(pc);
146  if (_cb != NULL && _cb->is_nmethod() && ((nmethod*)_cb)->is_deopt_pc(_pc)) {
147    address orig = (((nmethod*)_cb)->get_original_pc(this));
148    assert(orig == _pc, "expected original to be stored before patching");
149    _deopt_state = is_deoptimized;
150    // Leave _pc as is.
151  } else {
152    _deopt_state = not_deoptimized;
153    _pc = pc;
154  }
155}
156
157bool frame::is_interpreted_frame_valid(JavaThread* thread) const {
158  // Is there anything to do?
159  assert(is_interpreted_frame(), "Not an interpreted frame");
160  return true;
161}
162
163BasicType frame::interpreter_frame_result(oop* oop_result, jvalue* value_result) {
164  assert(is_interpreted_frame(), "interpreted frame expected");
165  Method* method = interpreter_frame_method();
166  BasicType type = method->result_type();
167
168  if (method->is_native()) {
169    // Prior to calling into the runtime to notify the method exit the possible
170    // result value is saved into the interpreter frame.
171#ifdef CC_INTERP
172    interpreterState istate = get_interpreterState();
173    address lresult = (address)istate + in_bytes(BytecodeInterpreter::native_lresult_offset());
174    address fresult = (address)istate + in_bytes(BytecodeInterpreter::native_fresult_offset());
175#else
176    address lresult = (address)&(get_ijava_state()->lresult);
177    address fresult = (address)&(get_ijava_state()->fresult);
178#endif
179
180    switch (method->result_type()) {
181      case T_OBJECT:
182      case T_ARRAY: {
183        oop* obj_p = *(oop**)lresult;
184        oop obj = (obj_p == NULL) ? (oop)NULL : *obj_p;
185        assert(obj == NULL || Universe::heap()->is_in(obj), "sanity check");
186        *oop_result = obj;
187        break;
188      }
189      // We use std/stfd to store the values.
190      case T_BOOLEAN : value_result->z = (jboolean) *(unsigned long*)lresult; break;
191      case T_INT     : value_result->i = (jint)     *(long*)lresult;          break;
192      case T_CHAR    : value_result->c = (jchar)    *(unsigned long*)lresult; break;
193      case T_SHORT   : value_result->s = (jshort)   *(long*)lresult;          break;
194      case T_BYTE    : value_result->z = (jbyte)    *(long*)lresult;          break;
195      case T_LONG    : value_result->j = (jlong)    *(long*)lresult;          break;
196      case T_FLOAT   : value_result->f = (jfloat)   *(double*)fresult;        break;
197      case T_DOUBLE  : value_result->d = (jdouble)  *(double*)fresult;        break;
198      case T_VOID    : /* Nothing to do */ break;
199      default        : ShouldNotReachHere();
200    }
201  } else {
202    intptr_t* tos_addr = interpreter_frame_tos_address();
203    switch (method->result_type()) {
204      case T_OBJECT:
205      case T_ARRAY: {
206        oop obj = *(oop*)tos_addr;
207        assert(obj == NULL || Universe::heap()->is_in(obj), "sanity check");
208        *oop_result = obj;
209      }
210      case T_BOOLEAN : value_result->z = (jboolean) *(jint*)tos_addr; break;
211      case T_BYTE    : value_result->b = (jbyte) *(jint*)tos_addr; break;
212      case T_CHAR    : value_result->c = (jchar) *(jint*)tos_addr; break;
213      case T_SHORT   : value_result->s = (jshort) *(jint*)tos_addr; break;
214      case T_INT     : value_result->i = *(jint*)tos_addr; break;
215      case T_LONG    : value_result->j = *(jlong*)tos_addr; break;
216      case T_FLOAT   : value_result->f = *(jfloat*)tos_addr; break;
217      case T_DOUBLE  : value_result->d = *(jdouble*)tos_addr; break;
218      case T_VOID    : /* Nothing to do */ break;
219      default        : ShouldNotReachHere();
220    }
221  }
222  return type;
223}
224
225#ifndef PRODUCT
226
227void frame::describe_pd(FrameValues& values, int frame_no) {
228  if (is_interpreted_frame()) {
229#ifdef CC_INTERP
230    interpreterState istate = get_interpreterState();
231    values.describe(frame_no, (intptr_t*)istate, "istate");
232    values.describe(frame_no, (intptr_t*)&(istate->_thread), " thread");
233    values.describe(frame_no, (intptr_t*)&(istate->_bcp), " bcp");
234    values.describe(frame_no, (intptr_t*)&(istate->_locals), " locals");
235    values.describe(frame_no, (intptr_t*)&(istate->_constants), " constants");
236    values.describe(frame_no, (intptr_t*)&(istate->_method), err_msg(" method = %s", istate->_method->name_and_sig_as_C_string()));
237    values.describe(frame_no, (intptr_t*)&(istate->_mdx), " mdx");
238    values.describe(frame_no, (intptr_t*)&(istate->_stack), " stack");
239    values.describe(frame_no, (intptr_t*)&(istate->_msg), err_msg(" msg = %s", BytecodeInterpreter::C_msg(istate->_msg)));
240    values.describe(frame_no, (intptr_t*)&(istate->_result), " result");
241    values.describe(frame_no, (intptr_t*)&(istate->_prev_link), " prev_link");
242    values.describe(frame_no, (intptr_t*)&(istate->_oop_temp), " oop_temp");
243    values.describe(frame_no, (intptr_t*)&(istate->_stack_base), " stack_base");
244    values.describe(frame_no, (intptr_t*)&(istate->_stack_limit), " stack_limit");
245    values.describe(frame_no, (intptr_t*)&(istate->_monitor_base), " monitor_base");
246    values.describe(frame_no, (intptr_t*)&(istate->_frame_bottom), " frame_bottom");
247    values.describe(frame_no, (intptr_t*)&(istate->_last_Java_pc), " last_Java_pc");
248    values.describe(frame_no, (intptr_t*)&(istate->_last_Java_fp), " last_Java_fp");
249    values.describe(frame_no, (intptr_t*)&(istate->_last_Java_sp), " last_Java_sp");
250    values.describe(frame_no, (intptr_t*)&(istate->_self_link), " self_link");
251    values.describe(frame_no, (intptr_t*)&(istate->_native_fresult), " native_fresult");
252    values.describe(frame_no, (intptr_t*)&(istate->_native_lresult), " native_lresult");
253#else
254#define DESCRIBE_ADDRESS(name) \
255  values.describe(frame_no, (intptr_t*)&(get_ijava_state()->name), #name);
256
257      DESCRIBE_ADDRESS(method);
258      DESCRIBE_ADDRESS(locals);
259      DESCRIBE_ADDRESS(monitors);
260      DESCRIBE_ADDRESS(cpoolCache);
261      DESCRIBE_ADDRESS(bcp);
262      DESCRIBE_ADDRESS(esp);
263      DESCRIBE_ADDRESS(mdx);
264      DESCRIBE_ADDRESS(top_frame_sp);
265      DESCRIBE_ADDRESS(sender_sp);
266      DESCRIBE_ADDRESS(oop_tmp);
267      DESCRIBE_ADDRESS(lresult);
268      DESCRIBE_ADDRESS(fresult);
269#endif
270  }
271}
272#endif
273
274intptr_t *frame::initial_deoptimization_info() {
275  // unused... but returns fp() to minimize changes introduced by 7087445
276  return fp();
277}
278
279#ifndef PRODUCT
280// This is a generic constructor which is only used by pns() in debug.cpp.
281frame::frame(void* sp, void* fp, void* pc) : _sp((intptr_t*)sp), _unextended_sp((intptr_t*)sp) {
282  find_codeblob_and_set_pc_and_deopt_state((address)pc); // also sets _fp and adjusts _unextended_sp
283}
284#endif
285