src/cpu/x86/vm/frame_x86.inline.hpp

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1 /*
2 * Copyright (c) 1997, 2013, 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 #ifndef CPU_X86_VM_FRAME_X86_INLINE_HPP
26 #define CPU_X86_VM_FRAME_X86_INLINE_HPP
27
28 #include "code/codeCache.hpp"
29
30 // Inline functions for Intel frames:
31
32 // Constructors:
33
34 inline frame::frame() {
35 _pc = NULL;
36 _sp = NULL;
37 _unextended_sp = NULL;
38 _fp = NULL;
39 _cb = NULL;
40 _deopt_state = unknown;
41 }
42
43 inline frame::frame(intptr_t* sp, intptr_t* fp, address pc) {
44 _sp = sp;
45 _unextended_sp = sp;
46 _fp = fp;
47 _pc = pc;
48 assert(pc != NULL, "no pc?");
49 _cb = CodeCache::find_blob(pc);
50 adjust_unextended_sp();
51
52 address original_pc = nmethod::get_deopt_original_pc(this);
53 if (original_pc != NULL) {
54 _pc = original_pc;
55 _deopt_state = is_deoptimized;
56 } else {
57 _deopt_state = not_deoptimized;
58 }
59 }
60
61 inline frame::frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc) {
62 _sp = sp;
63 _unextended_sp = unextended_sp;
64 _fp = fp;
65 _pc = pc;
66 assert(pc != NULL, "no pc?");
67 _cb = CodeCache::find_blob(pc);
68 adjust_unextended_sp();
69
70 address original_pc = nmethod::get_deopt_original_pc(this);
71 if (original_pc != NULL) {
72 _pc = original_pc;
73 assert(((nmethod*)_cb)->insts_contains(_pc), "original PC must be in nmethod");
74 _deopt_state = is_deoptimized;
75 } else {
76 _deopt_state = not_deoptimized;
77 }
78 }
79
80 inline frame::frame(intptr_t* sp, intptr_t* fp) {
81 _sp = sp;
82 _unextended_sp = sp;
83 _fp = fp;
84 _pc = (address)(sp[-1]);
85
86 // Here's a sticky one. This constructor can be called via AsyncGetCallTrace
87 // when last_Java_sp is non-null but the pc fetched is junk. If we are truly
88 // unlucky the junk value could be to a zombied method and we'll die on the
89 // find_blob call. This is also why we can have no asserts on the validity
90 // of the pc we find here. AsyncGetCallTrace -> pd_get_top_frame_for_signal_handler
91 // -> pd_last_frame should use a specialized version of pd_last_frame which could
92 // call a specilaized frame constructor instead of this one.
93 // Then we could use the assert below. However this assert is of somewhat dubious
94 // value.
95 // assert(_pc != NULL, "no pc?");
96
97 _cb = CodeCache::find_blob(_pc);
98 adjust_unextended_sp();
99
100 address original_pc = nmethod::get_deopt_original_pc(this);
101 if (original_pc != NULL) {
102 _pc = original_pc;
103 _deopt_state = is_deoptimized;
104 } else {
105 _deopt_state = not_deoptimized;
106 }
107 }
108
109 // Accessors
110
111 inline bool frame::equal(frame other) const {
112 bool ret = sp() == other.sp()
113 && unextended_sp() == other.unextended_sp()
114 && fp() == other.fp()
115 && pc() == other.pc();
116 assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction");
117 return ret;
118 }
119
120 // Return unique id for this frame. The id must have a value where we can distinguish
121 // identity and younger/older relationship. NULL represents an invalid (incomparable)
122 // frame.
123 inline intptr_t* frame::id(void) const { return unextended_sp(); }
124
125 // Relationals on frames based
126 // Return true if the frame is younger (more recent activation) than the frame represented by id
127 inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
128 return this->id() < id ; }
129
130 // Return true if the frame is older (less recent activation) than the frame represented by id
131 inline bool frame::is_older(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
132 return this->id() > id ; }
133
134
135
136 inline intptr_t* frame::link() const { return (intptr_t*) *(intptr_t **)addr_at(link_offset); }
137 inline void frame::set_link(intptr_t* addr) { *(intptr_t **)addr_at(link_offset) = addr; }
138
139
140 inline intptr_t* frame::unextended_sp() const { return _unextended_sp; }
141
142 // Return address:
143
144 inline address* frame::sender_pc_addr() const { return (address*) addr_at( return_addr_offset); }
145 inline address frame::sender_pc() const { return *sender_pc_addr(); }
146
147 // return address of param, zero origin index.
148 inline address* frame::native_param_addr(int idx) const { return (address*) addr_at( native_frame_initial_param_offset+idx); }
149
150 #ifdef CC_INTERP
151
152 inline interpreterState frame::get_interpreterState() const {
153 return ((interpreterState)addr_at( -((int)sizeof(BytecodeInterpreter))/wordSize ));
154 }
155
156 inline intptr_t* frame::sender_sp() const {
157 // Hmm this seems awfully expensive QQQ, is this really called with interpreted frames?
158 if (is_interpreted_frame()) {
159 assert(false, "should never happen");
160 return get_interpreterState()->sender_sp();
161 } else {
162 return addr_at(sender_sp_offset);
163 }
164 }
165
166 inline intptr_t** frame::interpreter_frame_locals_addr() const {
167 assert(is_interpreted_frame(), "must be interpreted");
168 return &(get_interpreterState()->_locals);
169 }
170
171 inline intptr_t* frame::interpreter_frame_bcx_addr() const {
172 assert(is_interpreted_frame(), "must be interpreted");
173 return (intptr_t*) &(get_interpreterState()->_bcp);
174 }
175
176
177 // Constant pool cache
178
179 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const {
180 assert(is_interpreted_frame(), "must be interpreted");
181 return &(get_interpreterState()->_constants);
182 }
183
184 // Method
185
186 inline Method** frame::interpreter_frame_method_addr() const {
187 assert(is_interpreted_frame(), "must be interpreted");
188 return &(get_interpreterState()->_method);
189 }
190
191 inline intptr_t* frame::interpreter_frame_mdx_addr() const {
192 assert(is_interpreted_frame(), "must be interpreted");
193 return (intptr_t*) &(get_interpreterState()->_mdx);
194 }
195
196 // top of expression stack
197 inline intptr_t* frame::interpreter_frame_tos_address() const {
198 assert(is_interpreted_frame(), "wrong frame type");
199 return get_interpreterState()->_stack + 1;
200 }
201
202 #else /* asm interpreter */
203 inline intptr_t* frame::sender_sp() const { return addr_at( sender_sp_offset); }
204
205 inline intptr_t** frame::interpreter_frame_locals_addr() const {
206 return (intptr_t**)addr_at(interpreter_frame_locals_offset);
207 }
208
209 inline intptr_t* frame::interpreter_frame_last_sp() const {
210 return *(intptr_t**)addr_at(interpreter_frame_last_sp_offset);
211 }
212
213 inline intptr_t* frame::interpreter_frame_bcx_addr() const {
214 return (intptr_t*)addr_at(interpreter_frame_bcx_offset);
215 }
216
217
218 inline intptr_t* frame::interpreter_frame_mdx_addr() const {
219 return (intptr_t*)addr_at(interpreter_frame_mdx_offset);
220 }
221
222
223
224 // Constant pool cache
225
226 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const {
227 return (ConstantPoolCache**)addr_at(interpreter_frame_cache_offset);
228 }
229
230 // Method
231
232 inline Method** frame::interpreter_frame_method_addr() const {
233 return (Method**)addr_at(interpreter_frame_method_offset);
234 }
235
236 // top of expression stack
237 inline intptr_t* frame::interpreter_frame_tos_address() const {
238 intptr_t* last_sp = interpreter_frame_last_sp();
239 if (last_sp == NULL) {
240 return sp();
241 } else {
242 // sp() may have been extended or shrunk by an adapter. At least
243 // check that we don't fall behind the legal region.
244 // For top deoptimized frame last_sp == interpreter_frame_monitor_end.
245 assert(last_sp <= (intptr_t*) interpreter_frame_monitor_end(), "bad tos");
246 return last_sp;
247 }
248 }
249
250 inline oop* frame::interpreter_frame_temp_oop_addr() const {
251 return (oop *)(fp() + interpreter_frame_oop_temp_offset);
252 }
253
254 #endif /* CC_INTERP */
255
256 inline int frame::pd_oop_map_offset_adjustment() const {
257 return 0;
258 }
259
260 inline int frame::interpreter_frame_monitor_size() {
261 return BasicObjectLock::size();
262 }
263
264
265 // expression stack
266 // (the max_stack arguments are used by the GC; see class FrameClosure)
267
268 inline intptr_t* frame::interpreter_frame_expression_stack() const {
269 intptr_t* monitor_end = (intptr_t*) interpreter_frame_monitor_end();
270 return monitor_end-1;
271 }
272
273
274 inline jint frame::interpreter_frame_expression_stack_direction() { return -1; }
275
276
277 // Entry frames
278
279 inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const {
280 return (JavaCallWrapper**)addr_at(entry_frame_call_wrapper_offset);
281 }
282
283 // Compiled frames
284
285 inline int frame::local_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
286 return (nof_args - local_index + (local_index < nof_args ? 1: -1));
287 }
288
289 inline int frame::monitor_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
290 return local_offset_for_compiler(local_index, nof_args, max_nof_locals, max_nof_monitors);
291 }
292
293 inline int frame::min_local_offset_for_compiler(int nof_args, int max_nof_locals, int max_nof_monitors) {
294 return (nof_args - (max_nof_locals + max_nof_monitors*2) - 1);
295 }
296
297 inline bool frame::volatile_across_calls(Register reg) {
298 return true;
299 }
300
301 inline oop frame::saved_oop_result(RegisterMap* map) const {
302 oop* result_adr = (oop *)map->location(rax->as_VMReg());
303 guarantee(result_adr != NULL, "bad register save location");
304
305 return (*result_adr);
306 }
307
308 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) {
309 oop* result_adr = (oop *)map->location(rax->as_VMReg());
310 guarantee(result_adr != NULL, "bad register save location");
311
312 *result_adr = obj;
313 }
314
315 #endif // CPU_X86_VM_FRAME_X86_INLINE_HPP

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