1 /*
2 * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2014, Red Hat Inc. All rights reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
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24 */
25
26 #ifndef CPU_AARCH64_VM_FRAME_AARCH64_INLINE_HPP
27 #define CPU_AARCH64_VM_FRAME_AARCH64_INLINE_HPP
28
29 #include "code/codeCache.hpp"
30 #include "code/vmreg.inline.hpp"
31
32 // Inline functions for AArch64 frames:
33
34 // Constructors:
35
36 inline frame::frame() {
37 _pc = NULL;
38 _sp = NULL;
39 _unextended_sp = NULL;
40 _fp = NULL;
41 _cb = NULL;
42 _deopt_state = unknown;
43 }
44
45 static int spin;
46
47 inline void frame::init(intptr_t* sp, intptr_t* fp, address pc) {
48 intptr_t a = intptr_t(sp);
49 intptr_t b = intptr_t(fp);
50 _sp = sp;
51 _unextended_sp = sp;
52 _fp = fp;
53 _pc = pc;
54 assert(pc != NULL, "no pc?");
55 _cb = CodeCache::find_blob(pc);
56 adjust_unextended_sp();
57
58 address original_pc = CompiledMethod::get_deopt_original_pc(this);
59 if (original_pc != NULL) {
60 _pc = original_pc;
61 _deopt_state = is_deoptimized;
62 } else {
63 _deopt_state = not_deoptimized;
64 }
65 }
66
67 inline frame::frame(intptr_t* sp, intptr_t* fp, address pc) {
68 init(sp, fp, pc);
69 }
70
71 inline frame::frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc) {
72 intptr_t a = intptr_t(sp);
73 intptr_t b = intptr_t(fp);
74 _sp = sp;
75 _unextended_sp = unextended_sp;
76 _fp = fp;
77 _pc = pc;
78 assert(pc != NULL, "no pc?");
79 _cb = CodeCache::find_blob(pc);
80 adjust_unextended_sp();
81
82 address original_pc = CompiledMethod::get_deopt_original_pc(this);
83 if (original_pc != NULL) {
84 _pc = original_pc;
85 assert(_cb->as_compiled_method()->insts_contains_inclusive(_pc),
86 "original PC must be in the main code section of the the compiled method (or must be immediately following it)");
87 _deopt_state = is_deoptimized;
88 } else {
89 _deopt_state = not_deoptimized;
90 }
91 }
92
93 inline frame::frame(intptr_t* sp, intptr_t* fp) {
94 intptr_t a = intptr_t(sp);
95 intptr_t b = intptr_t(fp);
96 _sp = sp;
97 _unextended_sp = sp;
98 _fp = fp;
99 _pc = (address)(sp[-1]);
100
101 // Here's a sticky one. This constructor can be called via AsyncGetCallTrace
102 // when last_Java_sp is non-null but the pc fetched is junk. If we are truly
103 // unlucky the junk value could be to a zombied method and we'll die on the
104 // find_blob call. This is also why we can have no asserts on the validity
105 // of the pc we find here. AsyncGetCallTrace -> pd_get_top_frame_for_signal_handler
106 // -> pd_last_frame should use a specialized version of pd_last_frame which could
107 // call a specilaized frame constructor instead of this one.
108 // Then we could use the assert below. However this assert is of somewhat dubious
109 // value.
110 // assert(_pc != NULL, "no pc?");
111
112 _cb = CodeCache::find_blob(_pc);
113 adjust_unextended_sp();
114
115 address original_pc = CompiledMethod::get_deopt_original_pc(this);
116 if (original_pc != NULL) {
117 _pc = original_pc;
118 _deopt_state = is_deoptimized;
119 } else {
120 _deopt_state = not_deoptimized;
121 }
122 }
123
124 // Accessors
125
126 inline bool frame::equal(frame other) const {
127 bool ret = sp() == other.sp()
128 && unextended_sp() == other.unextended_sp()
129 && fp() == other.fp()
130 && pc() == other.pc();
131 assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction");
132 return ret;
133 }
134
135 // Return unique id for this frame. The id must have a value where we can distinguish
136 // identity and younger/older relationship. NULL represents an invalid (incomparable)
137 // frame.
138 inline intptr_t* frame::id(void) const { return unextended_sp(); }
139
140 // Relationals on frames based
141 // Return true if the frame is younger (more recent activation) than the frame represented by id
142 inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
143 return this->id() < id ; }
144
145 // Return true if the frame is older (less recent activation) than the frame represented by id
146 inline bool frame::is_older(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
147 return this->id() > id ; }
148
149
150
151 inline intptr_t* frame::link() const { return (intptr_t*) *(intptr_t **)addr_at(link_offset); }
152
153
154 inline intptr_t* frame::unextended_sp() const { return _unextended_sp; }
155
156 // Return address:
157
158 inline address* frame::sender_pc_addr() const { return (address*) addr_at( return_addr_offset); }
159 inline address frame::sender_pc() const { return *sender_pc_addr(); }
160
161 inline intptr_t* frame::sender_sp() const { return addr_at( sender_sp_offset); }
162
163 inline intptr_t** frame::interpreter_frame_locals_addr() const {
164 return (intptr_t**)addr_at(interpreter_frame_locals_offset);
165 }
166
167 inline intptr_t* frame::interpreter_frame_last_sp() const {
168 return *(intptr_t**)addr_at(interpreter_frame_last_sp_offset);
169 }
170
171 inline intptr_t* frame::interpreter_frame_bcp_addr() const {
172 return (intptr_t*)addr_at(interpreter_frame_bcp_offset);
173 }
174
175 inline intptr_t* frame::interpreter_frame_mdp_addr() const {
176 return (intptr_t*)addr_at(interpreter_frame_mdp_offset);
177 }
178
179
180 // Constant pool cache
181
182 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const {
183 return (ConstantPoolCache**)addr_at(interpreter_frame_cache_offset);
184 }
185
186 // Method
187
188 inline Method** frame::interpreter_frame_method_addr() const {
189 return (Method**)addr_at(interpreter_frame_method_offset);
190 }
191
192 // Mirror
193
194 inline oop* frame::interpreter_frame_mirror_addr() const {
195 return (oop*)addr_at(interpreter_frame_mirror_offset);
196 }
197
198 // top of expression stack
199 inline intptr_t* frame::interpreter_frame_tos_address() const {
200 intptr_t* last_sp = interpreter_frame_last_sp();
201 if (last_sp == NULL) {
202 return sp();
203 } else {
204 // sp() may have been extended or shrunk by an adapter. At least
205 // check that we don't fall behind the legal region.
206 // For top deoptimized frame last_sp == interpreter_frame_monitor_end.
207 assert(last_sp <= (intptr_t*) interpreter_frame_monitor_end(), "bad tos");
208 return last_sp;
209 }
210 }
211
212 inline oop* frame::interpreter_frame_temp_oop_addr() const {
213 return (oop *)(fp() + interpreter_frame_oop_temp_offset);
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
240 // Compiled frames
241
242 inline oop frame::saved_oop_result(RegisterMap* map) const {
243 oop* result_adr = (oop *)map->location(r0->as_VMReg());
244 guarantee(result_adr != NULL, "bad register save location");
245
246 return (*result_adr);
247 }
248
249 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) {
250 oop* result_adr = (oop *)map->location(r0->as_VMReg());
251 guarantee(result_adr != NULL, "bad register save location");
252
253 *result_adr = obj;
254 }
255
256 #endif // CPU_AARCH64_VM_FRAME_AARCH64_INLINE_HPP