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.
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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.
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23 */
24
25 #ifndef CPU_X86_VM_FRAME_X86_INLINE_HPP
26 #define CPU_X86_VM_FRAME_X86_INLINE_HPP
27
28 // Inline functions for Intel frames:
29
30 // Constructors:
31
32 inline frame::frame() {
33 _pc = NULL;
34 _sp = NULL;
35 _unextended_sp = NULL;
36 _fp = NULL;
37 _cb = NULL;
38 _deopt_state = unknown;
39 }
40
41 inline frame::frame(intptr_t* sp, intptr_t* fp, address pc) {
42 _sp = sp;
43 _unextended_sp = sp;
44 _fp = fp;
45 _pc = pc;
46 assert(pc != NULL, "no pc?");
47 _cb = CodeCache::find_blob(pc);
48
49 address original_pc = nmethod::get_deopt_original_pc(this);
50 if (original_pc != NULL) {
51 _pc = original_pc;
52 _deopt_state = is_deoptimized;
53 } else {
54 _deopt_state = not_deoptimized;
55 }
56 }
57
58 inline frame::frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc) {
59 _sp = sp;
60 _unextended_sp = unextended_sp;
61 _fp = fp;
62 _pc = pc;
63 assert(pc != NULL, "no pc?");
64 _cb = CodeCache::find_blob(pc);
65
66 address original_pc = nmethod::get_deopt_original_pc(this);
67 if (original_pc != NULL) {
68 _pc = original_pc;
69 assert(((nmethod*)_cb)->insts_contains(_pc), "original PC must be in nmethod");
70 _deopt_state = is_deoptimized;
71 } else {
72 _deopt_state = not_deoptimized;
73 }
74 }
75
76 inline frame::frame(intptr_t* sp, intptr_t* fp) {
77 _sp = sp;
78 _unextended_sp = sp;
79 _fp = fp;
80 _pc = (address)(sp[-1]);
81
82 // Here's a sticky one. This constructor can be called via AsyncGetCallTrace
83 // when last_Java_sp is non-null but the pc fetched is junk. If we are truly
84 // unlucky the junk value could be to a zombied method and we'll die on the
85 // find_blob call. This is also why we can have no asserts on the validity
86 // of the pc we find here. AsyncGetCallTrace -> pd_get_top_frame_for_signal_handler
87 // -> pd_last_frame should use a specialized version of pd_last_frame which could
88 // call a specilaized frame constructor instead of this one.
89 // Then we could use the assert below. However this assert is of somewhat dubious
90 // value.
91 // assert(_pc != NULL, "no pc?");
92
93 _cb = CodeCache::find_blob(_pc);
94
95 address original_pc = nmethod::get_deopt_original_pc(this);
96 if (original_pc != NULL) {
97 _pc = original_pc;
98 _deopt_state = is_deoptimized;
99 } else {
100 _deopt_state = not_deoptimized;
101 }
102 }
103
104 // Accessors
105
106 inline bool frame::equal(frame other) const {
107 bool ret = sp() == other.sp()
108 && unextended_sp() == other.unextended_sp()
109 && fp() == other.fp()
110 && pc() == other.pc();
111 assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction");
112 return ret;
113 }
114
115 // Return unique id for this frame. The id must have a value where we can distinguish
116 // identity and younger/older relationship. NULL represents an invalid (incomparable)
117 // frame.
118 inline intptr_t* frame::id(void) const { return unextended_sp(); }
119
120 // Relationals on frames based
121 // Return true if the frame is younger (more recent activation) than the frame represented by id
122 inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
123 return this->id() < id ; }
124
125 // Return true if the frame is older (less recent activation) than the frame represented by id
126 inline bool frame::is_older(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
127 return this->id() > id ; }
128
129
130
131 inline intptr_t* frame::link() const { return (intptr_t*) *(intptr_t **)addr_at(link_offset); }
132 inline void frame::set_link(intptr_t* addr) { *(intptr_t **)addr_at(link_offset) = addr; }
133
134
135 inline intptr_t* frame::unextended_sp() const { return _unextended_sp; }
136
137 // Return address:
138
139 inline address* frame::sender_pc_addr() const { return (address*) addr_at( return_addr_offset); }
140 inline address frame::sender_pc() const { return *sender_pc_addr(); }
141
142 // return address of param, zero origin index.
143 inline address* frame::native_param_addr(int idx) const { return (address*) addr_at( native_frame_initial_param_offset+idx); }
144
145 #ifdef CC_INTERP
146
147 inline interpreterState frame::get_interpreterState() const {
148 return ((interpreterState)addr_at( -((int)sizeof(BytecodeInterpreter))/wordSize ));
149 }
150
151 inline intptr_t* frame::sender_sp() const {
152 // Hmm this seems awfully expensive QQQ, is this really called with interpreted frames?
153 if (is_interpreted_frame()) {
154 assert(false, "should never happen");
155 return get_interpreterState()->sender_sp();
156 } else {
157 return addr_at(sender_sp_offset);
158 }
159 }
160
161 inline intptr_t** frame::interpreter_frame_locals_addr() const {
162 assert(is_interpreted_frame(), "must be interpreted");
163 return &(get_interpreterState()->_locals);
164 }
165
166 inline intptr_t* frame::interpreter_frame_bcx_addr() const {
167 assert(is_interpreted_frame(), "must be interpreted");
168 return (intptr_t*) &(get_interpreterState()->_bcp);
169 }
170
171
172 // Constant pool cache
173
174 inline constantPoolCacheOop* frame::interpreter_frame_cache_addr() const {
175 assert(is_interpreted_frame(), "must be interpreted");
176 return &(get_interpreterState()->_constants);
177 }
178
179 // Method
180
181 inline methodOop* frame::interpreter_frame_method_addr() const {
182 assert(is_interpreted_frame(), "must be interpreted");
183 return &(get_interpreterState()->_method);
184 }
185
186 inline intptr_t* frame::interpreter_frame_mdx_addr() const {
187 assert(is_interpreted_frame(), "must be interpreted");
188 return (intptr_t*) &(get_interpreterState()->_mdx);
189 }
190
191 // top of expression stack
192 inline intptr_t* frame::interpreter_frame_tos_address() const {
193 assert(is_interpreted_frame(), "wrong frame type");
194 return get_interpreterState()->_stack + 1;
195 }
196
197 #else /* asm interpreter */
198 inline intptr_t* frame::sender_sp() const { return addr_at( sender_sp_offset); }
199
200 inline intptr_t** frame::interpreter_frame_locals_addr() const {
201 return (intptr_t**)addr_at(interpreter_frame_locals_offset);
202 }
203
204 inline intptr_t* frame::interpreter_frame_last_sp() const {
205 return *(intptr_t**)addr_at(interpreter_frame_last_sp_offset);
206 }
207
208 inline intptr_t* frame::interpreter_frame_bcx_addr() const {
209 return (intptr_t*)addr_at(interpreter_frame_bcx_offset);
210 }
211
212
213 inline intptr_t* frame::interpreter_frame_mdx_addr() const {
214 return (intptr_t*)addr_at(interpreter_frame_mdx_offset);
215 }
216
217
218
219 // Constant pool cache
220
221 inline constantPoolCacheOop* frame::interpreter_frame_cache_addr() const {
222 return (constantPoolCacheOop*)addr_at(interpreter_frame_cache_offset);
223 }
224
225 // Method
226
227 inline methodOop* frame::interpreter_frame_method_addr() const {
228 return (methodOop*)addr_at(interpreter_frame_method_offset);
229 }
230
231 // top of expression stack
232 inline intptr_t* frame::interpreter_frame_tos_address() const {
233 intptr_t* last_sp = interpreter_frame_last_sp();
234 if (last_sp == NULL) {
235 return sp();
236 } else {
237 // sp() may have been extended or shrunk by an adapter. At least
238 // check that we don't fall behind the legal region.
239 // For top deoptimized frame last_sp == interpreter_frame_monitor_end.
240 assert(last_sp <= (intptr_t*) interpreter_frame_monitor_end(), "bad tos");
241 return last_sp;
242 }
243 }
244
245 #endif /* CC_INTERP */
246
247 inline int frame::pd_oop_map_offset_adjustment() const {
248 return 0;
249 }
250
251 inline int frame::interpreter_frame_monitor_size() {
252 return BasicObjectLock::size();
253 }
254
255
256 // expression stack
257 // (the max_stack arguments are used by the GC; see class FrameClosure)
258
259 inline intptr_t* frame::interpreter_frame_expression_stack() const {
260 intptr_t* monitor_end = (intptr_t*) interpreter_frame_monitor_end();
261 return monitor_end-1;
262 }
263
264
265 inline jint frame::interpreter_frame_expression_stack_direction() { return -1; }
266
267
268 // Entry frames
269
270 inline JavaCallWrapper* frame::entry_frame_call_wrapper() const {
271 return (JavaCallWrapper*)at(entry_frame_call_wrapper_offset);
272 }
273
274
275 // Compiled frames
276
277 inline int frame::local_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
278 return (nof_args - local_index + (local_index < nof_args ? 1: -1));
279 }
280
281 inline int frame::monitor_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
282 return local_offset_for_compiler(local_index, nof_args, max_nof_locals, max_nof_monitors);
283 }
284
285 inline int frame::min_local_offset_for_compiler(int nof_args, int max_nof_locals, int max_nof_monitors) {
286 return (nof_args - (max_nof_locals + max_nof_monitors*2) - 1);
287 }
288
289 inline bool frame::volatile_across_calls(Register reg) {
290 return true;
291 }
292
293
294
295 inline oop frame::saved_oop_result(RegisterMap* map) const {
296 return *((oop*) map->location(rax->as_VMReg()));
297 }
298
299 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) {
300 *((oop*) map->location(rax->as_VMReg())) = obj;
301 }
302
303 #endif // CPU_X86_VM_FRAME_X86_INLINE_HPP