frame_x86.inline.hpp revision 196:d1605aabd0a1 
1/*
2 * Copyright 1997-2008 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any 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  _deopt_state = not_deoptimized;
46  if (_cb != NULL && _cb->is_nmethod() && ((nmethod*)_cb)->is_deopt_pc(_pc)) {
47    _pc = (((nmethod*)_cb)->get_original_pc(this));
48    _deopt_state = is_deoptimized;
49  } else {
50    _deopt_state = not_deoptimized;
51  }
52}
53
54inline frame:: frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc) {
55  _sp = sp;
56  _unextended_sp = unextended_sp;
57  _fp = fp;
58  _pc = pc;
59  assert(pc != NULL, "no pc?");
60  _cb = CodeCache::find_blob(pc);
61  _deopt_state = not_deoptimized;
62  if (_cb != NULL && _cb->is_nmethod() && ((nmethod*)_cb)->is_deopt_pc(_pc)) {
63    _pc = (((nmethod*)_cb)->get_original_pc(this));
64    _deopt_state = is_deoptimized;
65  } else {
66    _deopt_state = not_deoptimized;
67  }
68}
69
70inline frame::frame(intptr_t* sp, intptr_t* fp) {
71  _sp = sp;
72  _unextended_sp = sp;
73  _fp = fp;
74  _pc = (address)(sp[-1]);
75
76  // Here's a sticky one. This constructor can be called via AsyncGetCallTrace
77  // when last_Java_sp is non-null but the pc fetched is junk. If we are truly
78  // unlucky the junk value could be to a zombied method and we'll die on the
79  // find_blob call. This is also why we can have no asserts on the validity
80  // of the pc we find here. AsyncGetCallTrace -> pd_get_top_frame_for_signal_handler
81  // -> pd_last_frame should use a specialized version of pd_last_frame which could
82  // call a specilaized frame constructor instead of this one.
83  // Then we could use the assert below. However this assert is of somewhat dubious
84  // value.
85  // assert(_pc != NULL, "no pc?");
86
87  _cb = CodeCache::find_blob(_pc);
88
89  _deopt_state = not_deoptimized;
90  if (_cb != NULL && _cb->is_nmethod() && ((nmethod*)_cb)->is_deopt_pc(_pc)) {
91    _pc = (((nmethod*)_cb)->get_original_pc(this));
92    _deopt_state = is_deoptimized;
93  } else {
94    _deopt_state = not_deoptimized;
95  }
96}
97
98// Accessors
99
100inline bool frame::equal(frame other) const {
101  bool ret =  sp() == other.sp()
102              && unextended_sp() == other.unextended_sp()
103              && fp() == other.fp()
104              && pc() == other.pc();
105  assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction");
106  return ret;
107}
108
109// Return unique id for this frame. The id must have a value where we can distinguish
110// identity and younger/older relationship. NULL represents an invalid (incomparable)
111// frame.
112inline intptr_t* frame::id(void) const { return unextended_sp(); }
113
114// Relationals on frames based
115// Return true if the frame is younger (more recent activation) than the frame represented by id
116inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
117                                                    return this->id() < id ; }
118
119// Return true if the frame is older (less recent activation) than the frame represented by id
120inline bool frame::is_older(intptr_t* id) const   { assert(this->id() != NULL && id != NULL, "NULL frame id");
121                                                    return this->id() > id ; }
122
123
124
125inline intptr_t* frame::link() const              { return (intptr_t*) *(intptr_t **)addr_at(link_offset); }
126inline void      frame::set_link(intptr_t* addr)  { *(intptr_t **)addr_at(link_offset) = addr; }
127
128
129inline intptr_t* frame::unextended_sp() const     { return _unextended_sp; }
130
131// Return address:
132
133inline address* frame::sender_pc_addr()      const { return (address*) addr_at( return_addr_offset); }
134inline address  frame::sender_pc()           const { return *sender_pc_addr(); }
135
136// return address of param, zero origin index.
137inline address* frame::native_param_addr(int idx) const { return (address*) addr_at( native_frame_initial_param_offset+idx); }
138
139#ifdef CC_INTERP
140
141inline interpreterState frame::get_interpreterState() const {
142  return ((interpreterState)addr_at( -sizeof(BytecodeInterpreter)/wordSize ));
143}
144
145inline intptr_t*    frame::sender_sp()        const {
146  // Hmm this seems awfully expensive QQQ, is this really called with interpreted frames?
147  if (is_interpreted_frame()) {
148    assert(false, "should never happen");
149    return get_interpreterState()->sender_sp();
150  } else {
151    return            addr_at(sender_sp_offset);
152  }
153}
154
155inline intptr_t** frame::interpreter_frame_locals_addr() const {
156  assert(is_interpreted_frame(), "must be interpreted");
157  return &(get_interpreterState()->_locals);
158}
159
160inline intptr_t* frame::interpreter_frame_bcx_addr() const {
161  assert(is_interpreted_frame(), "must be interpreted");
162  return (jint*) &(get_interpreterState()->_bcp);
163}
164
165
166// Constant pool cache
167
168inline constantPoolCacheOop* frame::interpreter_frame_cache_addr() const {
169  assert(is_interpreted_frame(), "must be interpreted");
170  return &(get_interpreterState()->_constants);
171}
172
173// Method
174
175inline methodOop* frame::interpreter_frame_method_addr() const {
176  assert(is_interpreted_frame(), "must be interpreted");
177  return &(get_interpreterState()->_method);
178}
179
180inline intptr_t* frame::interpreter_frame_mdx_addr() const {
181  assert(is_interpreted_frame(), "must be interpreted");
182  return (jint*) &(get_interpreterState()->_mdx);
183}
184
185// top of expression stack
186inline intptr_t* frame::interpreter_frame_tos_address() const {
187  assert(is_interpreted_frame(), "wrong frame type");
188  return get_interpreterState()->_stack + 1;
189}
190
191#else /* asm interpreter */
192inline intptr_t*    frame::sender_sp()        const { return            addr_at(   sender_sp_offset); }
193
194inline intptr_t** frame::interpreter_frame_locals_addr() const {
195  return (intptr_t**)addr_at(interpreter_frame_locals_offset);
196}
197
198inline intptr_t* frame::interpreter_frame_last_sp() const {
199  return *(intptr_t**)addr_at(interpreter_frame_last_sp_offset);
200}
201
202inline intptr_t* frame::interpreter_frame_bcx_addr() const {
203  return (intptr_t*)addr_at(interpreter_frame_bcx_offset);
204}
205
206
207inline intptr_t* frame::interpreter_frame_mdx_addr() const {
208  return (intptr_t*)addr_at(interpreter_frame_mdx_offset);
209}
210
211
212
213// Constant pool cache
214
215inline constantPoolCacheOop* frame::interpreter_frame_cache_addr() const {
216  return (constantPoolCacheOop*)addr_at(interpreter_frame_cache_offset);
217}
218
219// Method
220
221inline methodOop* frame::interpreter_frame_method_addr() const {
222  return (methodOop*)addr_at(interpreter_frame_method_offset);
223}
224
225// top of expression stack
226inline intptr_t* frame::interpreter_frame_tos_address() const {
227  intptr_t* last_sp = interpreter_frame_last_sp();
228  if (last_sp == NULL ) {
229    return sp();
230  } else {
231    // sp() may have been extended by an adapter
232    assert(last_sp < fp() && last_sp >= sp(), "bad tos");
233    return last_sp;
234  }
235}
236
237#endif /* CC_INTERP */
238
239inline int frame::pd_oop_map_offset_adjustment() const {
240  return 0;
241}
242
243inline int frame::interpreter_frame_monitor_size() {
244  return BasicObjectLock::size();
245}
246
247
248// expression stack
249// (the max_stack arguments are used by the GC; see class FrameClosure)
250
251inline intptr_t* frame::interpreter_frame_expression_stack() const {
252  intptr_t* monitor_end = (intptr_t*) interpreter_frame_monitor_end();
253  return monitor_end-1;
254}
255
256
257inline jint frame::interpreter_frame_expression_stack_direction() { return -1; }
258
259
260// Entry frames
261
262inline JavaCallWrapper* frame::entry_frame_call_wrapper() const {
263 return (JavaCallWrapper*)at(entry_frame_call_wrapper_offset);
264}
265
266
267// Compiled frames
268
269inline int frame::local_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
270  return (nof_args - local_index + (local_index < nof_args ? 1: -1));
271}
272
273inline int frame::monitor_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
274  return local_offset_for_compiler(local_index, nof_args, max_nof_locals, max_nof_monitors);
275}
276
277inline int frame::min_local_offset_for_compiler(int nof_args, int max_nof_locals, int max_nof_monitors) {
278  return (nof_args - (max_nof_locals + max_nof_monitors*2) - 1);
279}
280
281inline bool frame::volatile_across_calls(Register reg) {
282  return true;
283}
284
285
286
287inline oop frame::saved_oop_result(RegisterMap* map) const       {
288  return *((oop*) map->location(rax->as_VMReg()));
289}
290
291inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) {
292  *((oop*) map->location(rax->as_VMReg())) = obj;
293}
294