1 /*
2 * Copyright (c) 1997, 2015, 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
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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 #include "code/codeCache.hpp"
29 #include "code/vmreg.inline.hpp"
30
31 // Inline functions for Intel frames:
32
33 // Constructors:
34
35 inline frame::frame() {
36 _pc = NULL;
37 _sp = NULL;
38 _unextended_sp = NULL;
39 _fp = NULL;
40 _cb = NULL;
41 _deopt_state = unknown;
42 }
43
44 inline void frame::init(intptr_t* sp, intptr_t* fp, address pc) {
45 _sp = sp;
46 _unextended_sp = sp;
47 _fp = fp;
48 _pc = pc;
49 assert(pc != NULL, "no pc?");
50 _cb = CodeCache::find_blob(pc);
51 adjust_unextended_sp();
52
53 address original_pc = nmethod::get_deopt_original_pc(this);
54 if (original_pc != NULL) {
55 _pc = original_pc;
56 _deopt_state = is_deoptimized;
57 } else {
58 _deopt_state = not_deoptimized;
59 }
60 }
61
62 inline frame::frame(intptr_t* sp, intptr_t* fp, address pc) {
63 init(sp, fp, pc);
64 }
65
66 inline frame::frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc) {
67 _sp = sp;
68 _unextended_sp = unextended_sp;
69 _fp = fp;
70 _pc = pc;
71 assert(pc != NULL, "no pc?");
72 _cb = CodeCache::find_blob(pc);
73 adjust_unextended_sp();
74
75 address original_pc = nmethod::get_deopt_original_pc(this);
76 if (original_pc != NULL) {
77 _pc = original_pc;
78 assert(((nmethod*)_cb)->insts_contains(_pc), "original PC must be in nmethod");
79 _deopt_state = is_deoptimized;
80 } else {
81 if (_cb->is_deoptimization_stub()) {
82 _deopt_state = is_deoptimized;
83 } else {
84 _deopt_state = not_deoptimized;
85 }
86 }
87 }
88
89 inline frame::frame(intptr_t* sp, intptr_t* fp) {
90 _sp = sp;
91 _unextended_sp = sp;
92 _fp = fp;
93 _pc = (address)(sp[-1]);
94
95 // Here's a sticky one. This constructor can be called via AsyncGetCallTrace
96 // when last_Java_sp is non-null but the pc fetched is junk. If we are truly
97 // unlucky the junk value could be to a zombied method and we'll die on the
98 // find_blob call. This is also why we can have no asserts on the validity
99 // of the pc we find here. AsyncGetCallTrace -> pd_get_top_frame_for_signal_handler
100 // -> pd_last_frame should use a specialized version of pd_last_frame which could
101 // call a specialized frame constructor instead of this one.
102 // Then we could use the assert below. However this assert is of somewhat dubious
103 // value.
104 // assert(_pc != NULL, "no pc?");
105
106 _cb = CodeCache::find_blob(_pc);
107 adjust_unextended_sp();
108
109 address original_pc = nmethod::get_deopt_original_pc(this);
110 if (original_pc != NULL) {
111 _pc = original_pc;
112 _deopt_state = is_deoptimized;
113 } else {
114 _deopt_state = not_deoptimized;
115 }
116 }
117
118 // Accessors
119
120 inline bool frame::equal(frame other) const {
121 bool ret = sp() == other.sp()
122 && unextended_sp() == other.unextended_sp()
123 && fp() == other.fp()
124 && pc() == other.pc();
125 assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction");
126 return ret;
127 }
128
129 // Return unique id for this frame. The id must have a value where we can distinguish
130 // identity and younger/older relationship. NULL represents an invalid (incomparable)
131 // frame.
132 inline intptr_t* frame::id(void) const { return unextended_sp(); }
133
134 // Relationals on frames based
135 // Return true if the frame is younger (more recent activation) than the frame represented by id
136 inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
137 return this->id() < id ; }
138
139 // Return true if the frame is older (less recent activation) than the frame represented by id
140 inline bool frame::is_older(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
141 return this->id() > id ; }
142
143
144
145 inline intptr_t* frame::link() const { return (intptr_t*) *(intptr_t **)addr_at(link_offset); }
146
147 inline intptr_t* frame::unextended_sp() const { return _unextended_sp; }
148
149 // Return address:
150
151 inline address* frame::sender_pc_addr() const { return (address*) addr_at( return_addr_offset); }
152 inline address frame::sender_pc() const { return *sender_pc_addr(); }
153
154 #ifdef CC_INTERP
155
156 inline interpreterState frame::get_interpreterState() const {
157 return ((interpreterState)addr_at( -((int)sizeof(BytecodeInterpreter))/wordSize ));
158 }
159
160 inline intptr_t* frame::sender_sp() const {
161 // Hmm this seems awfully expensive QQQ, is this really called with interpreted frames?
162 if (is_interpreted_frame()) {
163 assert(false, "should never happen");
164 return get_interpreterState()->sender_sp();
165 } else {
166 return addr_at(sender_sp_offset);
167 }
168 }
169
170 inline intptr_t** frame::interpreter_frame_locals_addr() const {
171 assert(is_interpreted_frame(), "must be interpreted");
172 return &(get_interpreterState()->_locals);
173 }
174
175 inline intptr_t* frame::interpreter_frame_bcp_addr() const {
176 assert(is_interpreted_frame(), "must be interpreted");
177 return (intptr_t*) &(get_interpreterState()->_bcp);
178 }
179
180
181 // Constant pool cache
182
183 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const {
184 assert(is_interpreted_frame(), "must be interpreted");
185 return &(get_interpreterState()->_constants);
186 }
187
188 // Method
189
190 inline Method** frame::interpreter_frame_method_addr() const {
191 assert(is_interpreted_frame(), "must be interpreted");
192 return &(get_interpreterState()->_method);
193 }
194
195 inline intptr_t* frame::interpreter_frame_mdp_addr() const {
196 assert(is_interpreted_frame(), "must be interpreted");
197 return (intptr_t*) &(get_interpreterState()->_mdx);
198 }
199
200 // top of expression stack
201 inline intptr_t* frame::interpreter_frame_tos_address() const {
202 assert(is_interpreted_frame(), "wrong frame type");
203 return get_interpreterState()->_stack + 1;
204 }
205
206 #else /* asm interpreter */
207 inline intptr_t* frame::sender_sp() const { return addr_at( sender_sp_offset); }
208
209 inline intptr_t** frame::interpreter_frame_locals_addr() const {
210 return (intptr_t**)addr_at(interpreter_frame_locals_offset);
211 }
212
213 inline intptr_t* frame::interpreter_frame_last_sp() const {
214 return *(intptr_t**)addr_at(interpreter_frame_last_sp_offset);
215 }
216
217 inline intptr_t* frame::interpreter_frame_bcp_addr() const {
218 return (intptr_t*)addr_at(interpreter_frame_bcp_offset);
219 }
220
221
222 inline intptr_t* frame::interpreter_frame_mdp_addr() const {
223 return (intptr_t*)addr_at(interpreter_frame_mdp_offset);
224 }
225
226
227
228 // Constant pool cache
229
230 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const {
231 return (ConstantPoolCache**)addr_at(interpreter_frame_cache_offset);
232 }
233
234 // Method
235
236 inline Method** frame::interpreter_frame_method_addr() const {
237 return (Method**)addr_at(interpreter_frame_method_offset);
238 }
239
240 // top of expression stack
241 inline intptr_t* frame::interpreter_frame_tos_address() const {
242 intptr_t* last_sp = interpreter_frame_last_sp();
243 if (last_sp == NULL) {
244 return sp();
245 } else {
246 // sp() may have been extended or shrunk by an adapter. At least
247 // check that we don't fall behind the legal region.
248 // For top deoptimized frame last_sp == interpreter_frame_monitor_end.
249 assert(last_sp <= (intptr_t*) interpreter_frame_monitor_end(), "bad tos");
250 return last_sp;
251 }
252 }
253
254 inline oop* frame::interpreter_frame_temp_oop_addr() const {
255 return (oop *)(fp() + interpreter_frame_oop_temp_offset);
256 }
257
258 #endif /* CC_INTERP */
259
260 inline int frame::pd_oop_map_offset_adjustment() const {
261 return 0;
262 }
263
264 inline int frame::interpreter_frame_monitor_size() {
265 return BasicObjectLock::size();
266 }
267
268
269 // expression stack
270 // (the max_stack arguments are used by the GC; see class FrameClosure)
271
272 inline intptr_t* frame::interpreter_frame_expression_stack() const {
273 intptr_t* monitor_end = (intptr_t*) interpreter_frame_monitor_end();
274 return monitor_end-1;
275 }
276
277
278 inline jint frame::interpreter_frame_expression_stack_direction() { return -1; }
279
280
281 // Entry frames
282
283 inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const {
284 return (JavaCallWrapper**)addr_at(entry_frame_call_wrapper_offset);
285 }
286
287 // Compiled frames
288
289 inline int frame::local_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
290 return (nof_args - local_index + (local_index < nof_args ? 1: -1));
291 }
292
293 inline int frame::monitor_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
294 return local_offset_for_compiler(local_index, nof_args, max_nof_locals, max_nof_monitors);
295 }
296
297 inline int frame::min_local_offset_for_compiler(int nof_args, int max_nof_locals, int max_nof_monitors) {
298 return (nof_args - (max_nof_locals + max_nof_monitors*2) - 1);
299 }
300
301 inline bool frame::volatile_across_calls(Register reg) {
302 return true;
303 }
304
305 inline oop frame::saved_oop_result(RegisterMap* map) const {
306 oop* result_adr = (oop *)map->location(rax->as_VMReg());
307 guarantee(result_adr != NULL, "bad register save location");
308
309 return (*result_adr);
310 }
311
312 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) {
313 oop* result_adr = (oop *)map->location(rax->as_VMReg());
314 guarantee(result_adr != NULL, "bad register save location");
315
316 *result_adr = obj;
317 }
318
319 #endif // CPU_X86_VM_FRAME_X86_INLINE_HPP