1 /*
2 * Copyright (c) 1997, 2016, 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 = CompiledMethod::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 = CompiledMethod::get_deopt_original_pc(this);
76 if (original_pc != NULL) {
77 _pc = original_pc;
78 assert(((CompiledMethod*)_cb)->insts_contains(_pc), "original PC must be in CompiledMethod");
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 // UPDATE: this constructor is only used by trace_method_handle_stub() now.
105 // assert(_pc != NULL, "no pc?");
106
107 _cb = CodeCache::find_blob(_pc);
108 adjust_unextended_sp();
109
110 address original_pc = CompiledMethod::get_deopt_original_pc(this);
111 if (original_pc != NULL) {
112 _pc = original_pc;
113 _deopt_state = is_deoptimized;
114 } else {
115 _deopt_state = not_deoptimized;
116 }
117 }
118
119 // Accessors
120
121 inline bool frame::equal(frame other) const {
122 bool ret = sp() == other.sp()
123 && unextended_sp() == other.unextended_sp()
124 && fp() == other.fp()
125 && pc() == other.pc();
126 assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction");
127 return ret;
128 }
129
130 // Return unique id for this frame. The id must have a value where we can distinguish
131 // identity and younger/older relationship. NULL represents an invalid (incomparable)
132 // frame.
133 inline intptr_t* frame::id(void) const { return unextended_sp(); }
134
135 // Relationals on frames based
136 // Return true if the frame is younger (more recent activation) than the frame represented by id
137 inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
138 return this->id() < id ; }
139
140 // Return true if the frame is older (less recent activation) than the frame represented by id
141 inline bool frame::is_older(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
142 return this->id() > id ; }
143
144
145
146 inline intptr_t* frame::link() const { return (intptr_t*) *(intptr_t **)addr_at(link_offset); }
147
148 inline intptr_t* frame::unextended_sp() const { return _unextended_sp; }
149
150 // Return address:
151
152 inline address* frame::sender_pc_addr() const { return (address*) addr_at( return_addr_offset); }
153 inline address frame::sender_pc() const { return *sender_pc_addr(); }
154
155 inline intptr_t* frame::sender_sp() const { return addr_at( sender_sp_offset); }
156
157 inline intptr_t** frame::interpreter_frame_locals_addr() const {
158 return (intptr_t**)addr_at(interpreter_frame_locals_offset);
159 }
160
161 inline intptr_t* frame::interpreter_frame_last_sp() const {
162 return *(intptr_t**)addr_at(interpreter_frame_last_sp_offset);
163 }
164
165 inline intptr_t* frame::interpreter_frame_bcp_addr() const {
166 return (intptr_t*)addr_at(interpreter_frame_bcp_offset);
167 }
168
169
170 inline intptr_t* frame::interpreter_frame_mdp_addr() const {
171 return (intptr_t*)addr_at(interpreter_frame_mdp_offset);
172 }
173
174
175
176 // Constant pool cache
177
178 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const {
179 return (ConstantPoolCache**)addr_at(interpreter_frame_cache_offset);
180 }
181
182 // Method
183
184 inline Method** frame::interpreter_frame_method_addr() const {
185 return (Method**)addr_at(interpreter_frame_method_offset);
186 }
187
188 // Mirror
189
190 inline oop* frame::interpreter_frame_mirror_addr() const {
191 return (oop*)addr_at(interpreter_frame_mirror_offset);
192 }
193
194 // top of expression stack
195 inline intptr_t* frame::interpreter_frame_tos_address() const {
196 intptr_t* last_sp = interpreter_frame_last_sp();
197 if (last_sp == NULL) {
198 return sp();
199 } else {
200 // sp() may have been extended or shrunk by an adapter. At least
201 // check that we don't fall behind the legal region.
202 // For top deoptimized frame last_sp == interpreter_frame_monitor_end.
203 assert(last_sp <= (intptr_t*) interpreter_frame_monitor_end(), "bad tos");
204 return last_sp;
205 }
206 }
207
208 inline oop* frame::interpreter_frame_temp_oop_addr() const {
209 return (oop *)(fp() + interpreter_frame_oop_temp_offset);
210 }
211
212 inline int frame::pd_oop_map_offset_adjustment() const {
213 return 0;
214 }
215
216 inline int frame::interpreter_frame_monitor_size() {
217 return BasicObjectLock::size();
218 }
219
220
221 // expression stack
222 // (the max_stack arguments are used by the GC; see class FrameClosure)
223
224 inline intptr_t* frame::interpreter_frame_expression_stack() const {
225 intptr_t* monitor_end = (intptr_t*) interpreter_frame_monitor_end();
226 return monitor_end-1;
227 }
228
229
230 inline jint frame::interpreter_frame_expression_stack_direction() { return -1; }
231
232
233 // Entry frames
234
235 inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const {
236 return (JavaCallWrapper**)addr_at(entry_frame_call_wrapper_offset);
237 }
238
239 // Compiled frames
240
241 inline int frame::local_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
242 return (nof_args - local_index + (local_index < nof_args ? 1: -1));
243 }
244
245 inline int frame::monitor_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
246 return local_offset_for_compiler(local_index, nof_args, max_nof_locals, max_nof_monitors);
247 }
248
249 inline int frame::min_local_offset_for_compiler(int nof_args, int max_nof_locals, int max_nof_monitors) {
250 return (nof_args - (max_nof_locals + max_nof_monitors*2) - 1);
251 }
252
253 inline bool frame::volatile_across_calls(Register reg) {
254 return true;
255 }
256
257 inline oop frame::saved_oop_result(RegisterMap* map) const {
258 oop* result_adr = (oop *)map->location(rax->as_VMReg());
259 guarantee(result_adr != NULL, "bad register save location");
260
261 return (*result_adr);
262 }
263
264 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) {
265 oop* result_adr = (oop *)map->location(rax->as_VMReg());
266 guarantee(result_adr != NULL, "bad register save location");
267
268 *result_adr = obj;
269 }
270
271 #endif // CPU_X86_VM_FRAME_X86_INLINE_HPP