1 /*
2 * Copyright (c) 1997, 2014, 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.
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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 _deopt_state = not_deoptimized;
82 }
83 }
84
85 inline frame::frame(intptr_t* sp, intptr_t* fp) {
86 _sp = sp;
87 _unextended_sp = sp;
88 _fp = fp;
89 _pc = (address)(sp[-1]);
90
91 // Here's a sticky one. This constructor can be called via AsyncGetCallTrace
92 // when last_Java_sp is non-null but the pc fetched is junk. If we are truly
93 // unlucky the junk value could be to a zombied method and we'll die on the
94 // find_blob call. This is also why we can have no asserts on the validity
95 // of the pc we find here. AsyncGetCallTrace -> pd_get_top_frame_for_signal_handler
96 // -> pd_last_frame should use a specialized version of pd_last_frame which could
97 // call a specilaized frame constructor instead of this one.
98 // Then we could use the assert below. However this assert is of somewhat dubious
99 // value.
100 // assert(_pc != NULL, "no pc?");
101
102 _cb = CodeCache::find_blob(_pc);
103 adjust_unextended_sp();
104
105 address original_pc = nmethod::get_deopt_original_pc(this);
106 if (original_pc != NULL) {
107 _pc = original_pc;
108 _deopt_state = is_deoptimized;
109 } else {
110 _deopt_state = not_deoptimized;
111 }
112 }
113
114 // Accessors
115
116 inline bool frame::equal(frame other) const {
117 bool ret = sp() == other.sp()
118 && unextended_sp() == other.unextended_sp()
119 && fp() == other.fp()
120 && pc() == other.pc();
121 assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction");
122 return ret;
123 }
124
125 // Return unique id for this frame. The id must have a value where we can distinguish
126 // identity and younger/older relationship. NULL represents an invalid (incomparable)
127 // frame.
128 inline intptr_t* frame::id(void) const { return unextended_sp(); }
129
130 // Relationals on frames based
131 // Return true if the frame is younger (more recent activation) than the frame represented by id
132 inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
133 return this->id() < id ; }
134
135 // Return true if the frame is older (less recent activation) than the frame represented by id
136 inline bool frame::is_older(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
137 return this->id() > id ; }
138
139
140
141 inline intptr_t* frame::link() const { return (intptr_t*) *(intptr_t **)addr_at(link_offset); }
142 inline void frame::set_link(intptr_t* addr) { *(intptr_t **)addr_at(link_offset) = addr; }
143
144
145 inline intptr_t* frame::unextended_sp() const { return _unextended_sp; }
146
147 // Return address:
148
149 inline address* frame::sender_pc_addr() const { return (address*) addr_at( return_addr_offset); }
150 inline address frame::sender_pc() const { return *sender_pc_addr(); }
151
152 #ifdef CC_INTERP
153
154 inline interpreterState frame::get_interpreterState() const {
155 return ((interpreterState)addr_at( -((int)sizeof(BytecodeInterpreter))/wordSize ));
156 }
157
158 inline intptr_t* frame::sender_sp() const {
159 // Hmm this seems awfully expensive QQQ, is this really called with interpreted frames?
160 if (is_interpreted_frame()) {
161 assert(false, "should never happen");
162 return get_interpreterState()->sender_sp();
163 } else {
164 return addr_at(sender_sp_offset);
165 }
166 }
167
168 inline intptr_t** frame::interpreter_frame_locals_addr() const {
169 assert(is_interpreted_frame(), "must be interpreted");
170 return &(get_interpreterState()->_locals);
171 }
172
173 inline intptr_t* frame::interpreter_frame_bcp_addr() const {
174 assert(is_interpreted_frame(), "must be interpreted");
175 return (intptr_t*) &(get_interpreterState()->_bcp);
176 }
177
178
179 // Constant pool cache
180
181 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const {
182 assert(is_interpreted_frame(), "must be interpreted");
183 return &(get_interpreterState()->_constants);
184 }
185
186 // Method
187
188 inline Method** frame::interpreter_frame_method_addr() const {
189 assert(is_interpreted_frame(), "must be interpreted");
190 return &(get_interpreterState()->_method);
191 }
192
193 inline intptr_t* frame::interpreter_frame_mdp_addr() const {
194 assert(is_interpreted_frame(), "must be interpreted");
195 return (intptr_t*) &(get_interpreterState()->_mdx);
196 }
197
198 // top of expression stack
199 inline intptr_t* frame::interpreter_frame_tos_address() const {
200 assert(is_interpreted_frame(), "wrong frame type");
201 return get_interpreterState()->_stack + 1;
202 }
203
204 #else /* asm interpreter */
205 inline intptr_t* frame::sender_sp() const { return addr_at( sender_sp_offset); }
206
207 inline intptr_t** frame::interpreter_frame_locals_addr() const {
208 return (intptr_t**)addr_at(interpreter_frame_locals_offset);
209 }
210
211 inline intptr_t* frame::interpreter_frame_last_sp() const {
212 return *(intptr_t**)addr_at(interpreter_frame_last_sp_offset);
213 }
214
215 inline intptr_t* frame::interpreter_frame_bcp_addr() const {
216 return (intptr_t*)addr_at(interpreter_frame_bcp_offset);
217 }
218
219
220 inline intptr_t* frame::interpreter_frame_mdp_addr() const {
221 return (intptr_t*)addr_at(interpreter_frame_mdp_offset);
222 }
223
224
225
226 // Constant pool cache
227
228 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const {
229 return (ConstantPoolCache**)addr_at(interpreter_frame_cache_offset);
230 }
231
232 // Method
233
234 inline Method** frame::interpreter_frame_method_addr() const {
235 return (Method**)addr_at(interpreter_frame_method_offset);
236 }
237
238 // top of expression stack
239 inline intptr_t* frame::interpreter_frame_tos_address() const {
240 intptr_t* last_sp = interpreter_frame_last_sp();
241 if (last_sp == NULL) {
242 return sp();
243 } else {
244 // sp() may have been extended or shrunk by an adapter. At least
245 // check that we don't fall behind the legal region.
246 // For top deoptimized frame last_sp == interpreter_frame_monitor_end.
247 assert(last_sp <= (intptr_t*) interpreter_frame_monitor_end(), "bad tos");
248 return last_sp;
249 }
250 }
251
252 inline oop* frame::interpreter_frame_temp_oop_addr() const {
253 return (oop *)(fp() + interpreter_frame_oop_temp_offset);
254 }
255
256 #endif /* CC_INTERP */
257
258 inline int frame::pd_oop_map_offset_adjustment() const {
259 return 0;
260 }
261
262 inline int frame::interpreter_frame_monitor_size() {
263 return BasicObjectLock::size();
264 }
265
266
267 // expression stack
268 // (the max_stack arguments are used by the GC; see class FrameClosure)
269
270 inline intptr_t* frame::interpreter_frame_expression_stack() const {
271 intptr_t* monitor_end = (intptr_t*) interpreter_frame_monitor_end();
272 return monitor_end-1;
273 }
274
275
276 inline jint frame::interpreter_frame_expression_stack_direction() { return -1; }
277
278
279 // Entry frames
280
281 inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const {
282 return (JavaCallWrapper**)addr_at(entry_frame_call_wrapper_offset);
283 }
284
285 // Compiled frames
286
287 inline int frame::local_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
288 return (nof_args - local_index + (local_index < nof_args ? 1: -1));
289 }
290
291 inline int frame::monitor_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
292 return local_offset_for_compiler(local_index, nof_args, max_nof_locals, max_nof_monitors);
293 }
294
295 inline int frame::min_local_offset_for_compiler(int nof_args, int max_nof_locals, int max_nof_monitors) {
296 return (nof_args - (max_nof_locals + max_nof_monitors*2) - 1);
297 }
298
299 inline bool frame::volatile_across_calls(Register reg) {
300 return true;
301 }
302
303 inline oop frame::saved_oop_result(RegisterMap* map) const {
304 oop* result_adr = (oop *)map->location(rax->as_VMReg());
305 guarantee(result_adr != NULL, "bad register save location");
306
307 return (*result_adr);
308 }
309
310 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) {
311 oop* result_adr = (oop *)map->location(rax->as_VMReg());
312 guarantee(result_adr != NULL, "bad register save location");
313
314 *result_adr = obj;
315 }
316
317 #endif // CPU_X86_VM_FRAME_X86_INLINE_HPP