frame_x86.inline.hpp revision 1472:c18cbe5936b8 
1/*
2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25// Inline functions for Intel frames:
26
27// Constructors:
28
29inline frame::frame() {
30  _pc = NULL;
31  _sp = NULL;
32  _unextended_sp = NULL;
33  _fp = NULL;
34  _cb = NULL;
35  _deopt_state = unknown;
36}
37
38inline frame::frame(intptr_t* sp, intptr_t* fp, address pc) {
39  _sp = sp;
40  _unextended_sp = sp;
41  _fp = fp;
42  _pc = pc;
43  assert(pc != NULL, "no pc?");
44  _cb = CodeCache::find_blob(pc);
45
46  address original_pc = nmethod::get_deopt_original_pc(this);
47  if (original_pc != NULL) {
48    _pc = original_pc;
49    _deopt_state = is_deoptimized;
50  } else {
51    _deopt_state = not_deoptimized;
52  }
53}
54
55inline frame::frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc) {
56  _sp = sp;
57  _unextended_sp = unextended_sp;
58  _fp = fp;
59  _pc = pc;
60  assert(pc != NULL, "no pc?");
61  _cb = CodeCache::find_blob(pc);
62
63  address original_pc = nmethod::get_deopt_original_pc(this);
64  if (original_pc != NULL) {
65    _pc = original_pc;
66    assert(((nmethod*)_cb)->code_contains(_pc), "original PC must be in nmethod");
67    _deopt_state = is_deoptimized;
68  } else {
69    _deopt_state = not_deoptimized;
70  }
71}
72
73inline frame::frame(intptr_t* sp, intptr_t* fp) {
74  _sp = sp;
75  _unextended_sp = sp;
76  _fp = fp;
77  _pc = (address)(sp[-1]);
78
79  // Here's a sticky one. This constructor can be called via AsyncGetCallTrace
80  // when last_Java_sp is non-null but the pc fetched is junk. If we are truly
81  // unlucky the junk value could be to a zombied method and we'll die on the
82  // find_blob call. This is also why we can have no asserts on the validity
83  // of the pc we find here. AsyncGetCallTrace -> pd_get_top_frame_for_signal_handler
84  // -> pd_last_frame should use a specialized version of pd_last_frame which could
85  // call a specilaized frame constructor instead of this one.
86  // Then we could use the assert below. However this assert is of somewhat dubious
87  // value.
88  // assert(_pc != NULL, "no pc?");
89
90  _cb = CodeCache::find_blob(_pc);
91
92  address original_pc = nmethod::get_deopt_original_pc(this);
93  if (original_pc != NULL) {
94    _pc = original_pc;
95    _deopt_state = is_deoptimized;
96  } else {
97    _deopt_state = not_deoptimized;
98  }
99}
100
101// Accessors
102
103inline bool frame::equal(frame other) const {
104  bool ret =  sp() == other.sp()
105              && unextended_sp() == other.unextended_sp()
106              && fp() == other.fp()
107              && pc() == other.pc();
108  assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction");
109  return ret;
110}
111
112// Return unique id for this frame. The id must have a value where we can distinguish
113// identity and younger/older relationship. NULL represents an invalid (incomparable)
114// frame.
115inline intptr_t* frame::id(void) const { return unextended_sp(); }
116
117// Relationals on frames based
118// Return true if the frame is younger (more recent activation) than the frame represented by id
119inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
120                                                    return this->id() < id ; }
121
122// Return true if the frame is older (less recent activation) than the frame represented by id
123inline bool frame::is_older(intptr_t* id) const   { assert(this->id() != NULL && id != NULL, "NULL frame id");
124                                                    return this->id() > id ; }
125
126
127
128inline intptr_t* frame::link() const              { return (intptr_t*) *(intptr_t **)addr_at(link_offset); }
129inline void      frame::set_link(intptr_t* addr)  { *(intptr_t **)addr_at(link_offset) = addr; }
130
131
132inline intptr_t* frame::unextended_sp() const     { return _unextended_sp; }
133
134// Return address:
135
136inline address* frame::sender_pc_addr()      const { return (address*) addr_at( return_addr_offset); }
137inline address  frame::sender_pc()           const { return *sender_pc_addr(); }
138
139// return address of param, zero origin index.
140inline address* frame::native_param_addr(int idx) const { return (address*) addr_at( native_frame_initial_param_offset+idx); }
141
142#ifdef CC_INTERP
143
144inline interpreterState frame::get_interpreterState() const {
145  return ((interpreterState)addr_at( -((int)sizeof(BytecodeInterpreter))/wordSize ));
146}
147
148inline intptr_t*    frame::sender_sp()        const {
149  // Hmm this seems awfully expensive QQQ, is this really called with interpreted frames?
150  if (is_interpreted_frame()) {
151    assert(false, "should never happen");
152    return get_interpreterState()->sender_sp();
153  } else {
154    return            addr_at(sender_sp_offset);
155  }
156}
157
158inline intptr_t** frame::interpreter_frame_locals_addr() const {
159  assert(is_interpreted_frame(), "must be interpreted");
160  return &(get_interpreterState()->_locals);
161}
162
163inline intptr_t* frame::interpreter_frame_bcx_addr() const {
164  assert(is_interpreted_frame(), "must be interpreted");
165  return (intptr_t*) &(get_interpreterState()->_bcp);
166}
167
168
169// Constant pool cache
170
171inline constantPoolCacheOop* frame::interpreter_frame_cache_addr() const {
172  assert(is_interpreted_frame(), "must be interpreted");
173  return &(get_interpreterState()->_constants);
174}
175
176// Method
177
178inline methodOop* frame::interpreter_frame_method_addr() const {
179  assert(is_interpreted_frame(), "must be interpreted");
180  return &(get_interpreterState()->_method);
181}
182
183inline intptr_t* frame::interpreter_frame_mdx_addr() const {
184  assert(is_interpreted_frame(), "must be interpreted");
185  return (intptr_t*) &(get_interpreterState()->_mdx);
186}
187
188// top of expression stack
189inline intptr_t* frame::interpreter_frame_tos_address() const {
190  assert(is_interpreted_frame(), "wrong frame type");
191  return get_interpreterState()->_stack + 1;
192}
193
194#else /* asm interpreter */
195inline intptr_t*    frame::sender_sp()        const { return            addr_at(   sender_sp_offset); }
196
197inline intptr_t** frame::interpreter_frame_locals_addr() const {
198  return (intptr_t**)addr_at(interpreter_frame_locals_offset);
199}
200
201inline intptr_t* frame::interpreter_frame_last_sp() const {
202  return *(intptr_t**)addr_at(interpreter_frame_last_sp_offset);
203}
204
205inline intptr_t* frame::interpreter_frame_bcx_addr() const {
206  return (intptr_t*)addr_at(interpreter_frame_bcx_offset);
207}
208
209
210inline intptr_t* frame::interpreter_frame_mdx_addr() const {
211  return (intptr_t*)addr_at(interpreter_frame_mdx_offset);
212}
213
214
215
216// Constant pool cache
217
218inline constantPoolCacheOop* frame::interpreter_frame_cache_addr() const {
219  return (constantPoolCacheOop*)addr_at(interpreter_frame_cache_offset);
220}
221
222// Method
223
224inline methodOop* frame::interpreter_frame_method_addr() const {
225  return (methodOop*)addr_at(interpreter_frame_method_offset);
226}
227
228// top of expression stack
229inline intptr_t* frame::interpreter_frame_tos_address() const {
230  intptr_t* last_sp = interpreter_frame_last_sp();
231  if (last_sp == NULL) {
232    return sp();
233  } else {
234    // sp() may have been extended or shrunk by an adapter.  At least
235    // check that we don't fall behind the legal region.
236    // For top deoptimized frame last_sp == interpreter_frame_monitor_end.
237    assert(last_sp <= (intptr_t*) interpreter_frame_monitor_end(), "bad tos");
238    return last_sp;
239  }
240}
241
242#endif /* CC_INTERP */
243
244inline int frame::pd_oop_map_offset_adjustment() const {
245  return 0;
246}
247
248inline int frame::interpreter_frame_monitor_size() {
249  return BasicObjectLock::size();
250}
251
252
253// expression stack
254// (the max_stack arguments are used by the GC; see class FrameClosure)
255
256inline intptr_t* frame::interpreter_frame_expression_stack() const {
257  intptr_t* monitor_end = (intptr_t*) interpreter_frame_monitor_end();
258  return monitor_end-1;
259}
260
261
262inline jint frame::interpreter_frame_expression_stack_direction() { return -1; }
263
264
265// Entry frames
266
267inline JavaCallWrapper* frame::entry_frame_call_wrapper() const {
268 return (JavaCallWrapper*)at(entry_frame_call_wrapper_offset);
269}
270
271
272// Compiled frames
273
274inline int frame::local_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
275  return (nof_args - local_index + (local_index < nof_args ? 1: -1));
276}
277
278inline int frame::monitor_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
279  return local_offset_for_compiler(local_index, nof_args, max_nof_locals, max_nof_monitors);
280}
281
282inline int frame::min_local_offset_for_compiler(int nof_args, int max_nof_locals, int max_nof_monitors) {
283  return (nof_args - (max_nof_locals + max_nof_monitors*2) - 1);
284}
285
286inline bool frame::volatile_across_calls(Register reg) {
287  return true;
288}
289
290
291
292inline oop frame::saved_oop_result(RegisterMap* map) const       {
293  return *((oop*) map->location(rax->as_VMReg()));
294}
295
296inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) {
297  *((oop*) map->location(rax->as_VMReg())) = obj;
298}
299