1 /*
2 * Copyright (c) 1997, 2018, 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 assert(_cb != NULL, "no cb 1 pc: %p orig_pc: %p", pc, original_pc);
78 _pc = original_pc;
79 assert(_cb->as_compiled_method()->insts_contains_inclusive(_pc),
80 "original PC must be in the main code section of the the compiled method (or must be immediately following it)");
81 _deopt_state = is_deoptimized;
82 } else {
83 assert(_cb != NULL, "no cb 2 sp: %p usp: %p fp: %p pc: %p orig_pc: %p", sp, unextended_sp, fp, pc, original_pc);
84 if (_cb->is_deoptimization_stub()) {
85 _deopt_state = is_deoptimized;
86 } else {
87 _deopt_state = not_deoptimized;
88 }
89 }
90 }
91
92 inline frame::frame(intptr_t* sp, intptr_t* fp) {
93 _sp = sp;
94 _unextended_sp = sp;
95 _fp = fp;
96 _pc = (address)(sp[-1]);
97
98 // Here's a sticky one. This constructor can be called via AsyncGetCallTrace
99 // when last_Java_sp is non-null but the pc fetched is junk. If we are truly
100 // unlucky the junk value could be to a zombied method and we'll die on the
101 // find_blob call. This is also why we can have no asserts on the validity
102 // of the pc we find here. AsyncGetCallTrace -> pd_get_top_frame_for_signal_handler
103 // -> pd_last_frame should use a specialized version of pd_last_frame which could
104 // call a specialized frame constructor instead of this one.
105 // Then we could use the assert below. However this assert is of somewhat dubious
106 // value.
107 // UPDATE: this constructor is only used by trace_method_handle_stub() now.
108 // assert(_pc != NULL, "no pc?");
109
110 _cb = CodeCache::find_blob(_pc);
111 adjust_unextended_sp();
112
113 address original_pc = CompiledMethod::get_deopt_original_pc(this);
114 if (original_pc != NULL) {
115 _pc = original_pc;
116 _deopt_state = is_deoptimized;
117 } else {
118 _deopt_state = not_deoptimized;
119 }
120 }
121
122 // Accessors
123
124 inline bool frame::equal(frame other) const {
125 bool ret = sp() == other.sp()
126 && unextended_sp() == other.unextended_sp()
127 && fp() == other.fp()
128 && pc() == other.pc();
129 assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction");
130 return ret;
131 }
132
133 // Return unique id for this frame. The id must have a value where we can distinguish
134 // identity and younger/older relationship. NULL represents an invalid (incomparable)
135 // frame.
136 inline intptr_t* frame::id(void) const { return unextended_sp(); }
137
138 // Relationals on frames based
139 // Return true if the frame is younger (more recent activation) than the frame represented by id
140 inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
141 return this->id() < id ; }
142
143 // Return true if the frame is older (less recent activation) than the frame represented by id
144 inline bool frame::is_older(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
145 return this->id() > id ; }
146
147
148
149 inline intptr_t* frame::link() const { return (intptr_t*) *(intptr_t **)addr_at(link_offset); }
150
151 inline intptr_t* frame::unextended_sp() const { return _unextended_sp; }
152
153 // Return address:
154
155 inline address* frame::sender_pc_addr() const { return (address*) addr_at( return_addr_offset); }
156 inline address frame::sender_pc() const { return *sender_pc_addr(); }
157
158 inline intptr_t* frame::sender_sp() const { return addr_at( sender_sp_offset); }
159
160 inline intptr_t** frame::interpreter_frame_locals_addr() const {
161 return (intptr_t**)addr_at(interpreter_frame_locals_offset);
162 }
163
164 inline intptr_t* frame::interpreter_frame_last_sp() const {
165 return *(intptr_t**)addr_at(interpreter_frame_last_sp_offset);
166 }
167
168 inline intptr_t* frame::interpreter_frame_bcp_addr() const {
169 return (intptr_t*)addr_at(interpreter_frame_bcp_offset);
170 }
171
172
173 inline intptr_t* frame::interpreter_frame_mdp_addr() const {
174 return (intptr_t*)addr_at(interpreter_frame_mdp_offset);
175 }
176
177
178
179 // Constant pool cache
180
181 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const {
182 return (ConstantPoolCache**)addr_at(interpreter_frame_cache_offset);
183 }
184
185 // Method
186
187 inline Method** frame::interpreter_frame_method_addr() const {
188 return (Method**)addr_at(interpreter_frame_method_offset);
189 }
190
191 // Mirror
192
193 inline oop* frame::interpreter_frame_mirror_addr() const {
194 return (oop*)addr_at(interpreter_frame_mirror_offset);
195 }
196
197 // top of expression stack
198 inline intptr_t* frame::interpreter_frame_tos_address() const {
199 intptr_t* last_sp = interpreter_frame_last_sp();
200 if (last_sp == NULL) {
201 return sp();
202 } else {
203 // sp() may have been extended or shrunk by an adapter. At least
204 // check that we don't fall behind the legal region.
205 // For top deoptimized frame last_sp == interpreter_frame_monitor_end.
206 assert(last_sp <= (intptr_t*) interpreter_frame_monitor_end(), "bad tos");
207 return last_sp;
208 }
209 }
210
211 inline oop* frame::interpreter_frame_temp_oop_addr() const {
212 return (oop *)(fp() + interpreter_frame_oop_temp_offset);
213 }
214
215 inline int frame::interpreter_frame_monitor_size() {
216 return BasicObjectLock::size();
217 }
218
219
220 // expression stack
221 // (the max_stack arguments are used by the GC; see class FrameClosure)
222
223 inline intptr_t* frame::interpreter_frame_expression_stack() const {
224 intptr_t* monitor_end = (intptr_t*) interpreter_frame_monitor_end();
225 return monitor_end-1;
226 }
227
228 // Entry frames
229
230 inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const {
231 return (JavaCallWrapper**)addr_at(entry_frame_call_wrapper_offset);
232 }
233
234 // Compiled frames
235
236 inline oop frame::saved_oop_result(RegisterMap* map) const {
237 oop* result_adr = (oop *)map->location(rax->as_VMReg());
238 guarantee(result_adr != NULL, "bad register save location");
239
240 return (*result_adr);
241 }
242
243 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) {
244 oop* result_adr = (oop *)map->location(rax->as_VMReg());
245 guarantee(result_adr != NULL, "bad register save location");
246
247 *result_adr = obj;
248 }
249
250 #endif // CPU_X86_VM_FRAME_X86_INLINE_HPP