1 /*
2 * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2014, Red Hat Inc. All rights reserved.
4 * Copyright (c) 2015, Linaro Ltd. All rights reserved.
5 * Copyright (c) 2015-2018, Azul Systems, Inc. All rights reserved.
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
7 *
8 * This code is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License version 2 only, as
10 * published by the Free Software Foundation.
11 *
12 * This code is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 * version 2 for more details (a copy is included in the LICENSE file that
16 * accompanied this code).
17 *
18 * You should have received a copy of the GNU General Public License version
19 * 2 along with this work; if not, write to the Free Software Foundation,
20 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
21 *
22 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
23 * or visit www.oracle.com if you need additional information or have any
24 * questions.
25 *
26 */
27
28 #ifndef CPU_AARCH32_VM_FRAME_AARCH32_INLINE_HPP
29 #define CPU_AARCH32_VM_FRAME_AARCH32_INLINE_HPP
30
31 #include "code/codeCache.hpp"
32 #include "code/vmreg.inline.hpp"
33
34 // Inline functions for AArch64 frames:
35
36 // Constructors:
37
38 inline frame::frame() {
39 _pc = NULL;
40 _sp = NULL;
41 _unextended_sp = NULL;
42 _fp = NULL;
43 _cb = NULL;
44 _deopt_state = unknown;
45 }
46
47 static int spin;
48
49 inline void frame::init(intptr_t* sp, intptr_t* fp, address pc) {
50 intptr_t a = intptr_t(sp);
51 intptr_t b = intptr_t(fp);
52 _sp = sp;
53 _unextended_sp = sp;
54 _fp = fp;
55 _pc = pc;
56 assert(pc != NULL, "no pc?");
57 _cb = CodeCache::find_blob(pc);
58 adjust_unextended_sp();
59
60 address original_pc = CompiledMethod::get_deopt_original_pc(this);
61 if (original_pc != NULL) {
62 _pc = original_pc;
63 _deopt_state = is_deoptimized;
64 } else {
65 _deopt_state = not_deoptimized;
66 }
67 }
68
69 inline frame::frame(intptr_t* sp, intptr_t* fp, address pc) {
70 init(sp, fp, pc);
71 }
72
73 inline frame::frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc) {
74 intptr_t a = intptr_t(sp);
75 intptr_t b = intptr_t(fp);
76 _sp = sp;
77 _unextended_sp = unextended_sp;
78 _fp = fp;
79 _pc = pc;
80 assert(pc != NULL, "no pc?");
81 _cb = CodeCache::find_blob(pc);
82 adjust_unextended_sp();
83
84 address original_pc = CompiledMethod::get_deopt_original_pc(this);
85 if (original_pc != NULL) {
86 _pc = original_pc;
87 assert(_cb->as_compiled_method()->insts_contains_inclusive(_pc),
88 "original PC must be in the main code section of the the compiled method (or must be immediately following it)");
89 _deopt_state = is_deoptimized;
90 } else {
91 _deopt_state = not_deoptimized;
92 }
93 }
94
95 inline frame::frame(intptr_t* sp, intptr_t* fp) {
96 _sp = sp;
97 _unextended_sp = sp;
98 _fp = fp;
99 assert(sp != NULL, "null SP ?");
100 // C2 generated code does not use or set fp
101 _pc = (address)(/*fp != NULL ? fp[0] : */sp[-1]);
102
103 // Here's a sticky one. This constructor can be called via AsyncGetCallTrace
104 // when last_Java_sp is non-null but the pc fetched is junk. If we are truly
105 // unlucky the junk value could be to a zombied method and we'll die on the
106 // find_blob call. This is also why we can have no asserts on the validity
107 // of the pc we find here. AsyncGetCallTrace -> pd_get_top_frame_for_signal_handler
108 // -> pd_last_frame should use a specialized version of pd_last_frame which could
109 // call a specilaized frame constructor instead of this one.
110 // Then we could use the assert below. However this assert is of somewhat dubious
111 // value.
112 // assert(_pc != NULL, "no pc?");
113
114 _cb = CodeCache::find_blob(_pc);
115 adjust_unextended_sp();
116
117 address original_pc = CompiledMethod::get_deopt_original_pc(this);
118 if (original_pc != NULL) {
119 _pc = original_pc;
120 _deopt_state = is_deoptimized;
121 } else {
122 _deopt_state = not_deoptimized;
123 }
124 }
125
126 // Accessors
127
128 inline bool frame::equal(frame other) const {
129 bool ret = sp() == other.sp()
130 && unextended_sp() == other.unextended_sp()
131 && fp() == other.fp()
132 && pc() == other.pc();
133 assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction");
134 return ret;
135 }
136
137 // Return unique id for this frame. The id must have a value where we can distinguish
138 // identity and younger/older relationship. NULL represents an invalid (incomparable)
139 // frame.
140 inline intptr_t* frame::id(void) const { return unextended_sp(); }
141
142 // Relationals on frames based
143 // Return true if the frame is younger (more recent activation) than the frame represented by id
144 inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
145 return this->id() < id ; }
146
147 // Return true if the frame is older (less recent activation) than the frame represented by id
148 inline bool frame::is_older(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
149 return this->id() > id ; }
150
151 inline intptr_t* frame::link() const { return *(intptr_t **)addr_at(get_link_offset(VMFrameAPCS)); }
152
153 inline intptr_t* frame::unextended_sp() const { return _unextended_sp; }
154
155 inline address frame::sender_pc() const { return *(address*) addr_at(get_return_addr_offset(VMFrameAPCS)); }
156
157 inline intptr_t* frame::sender_sp() const { return addr_at(sender_sp_offset); }
158
159 inline intptr_t** frame::interpreter_frame_locals_addr() const {
160 return (intptr_t**)addr_at(get_interpreter_frame_locals_offset());
161 }
162
163 inline intptr_t* frame::interpreter_frame_last_sp() const {
164 return *(intptr_t**)addr_at(get_interpreter_frame_last_sp_offset());
165 }
166
167 inline intptr_t* frame::interpreter_frame_bcp_addr() const {
168 return (intptr_t*) addr_at(get_interpreter_frame_bcp_offset());
169 }
170
171 inline intptr_t* frame::interpreter_frame_mdp_addr() const {
172 return (intptr_t*) addr_at(get_interpreter_frame_mdp_offset());
173 }
174
175
176 // Constant pool cache
177
178 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const {
179 return (ConstantPoolCache**)addr_at(get_interpreter_frame_cache_offset());
180 }
181
182 // Method
183
184 inline Method** frame::interpreter_frame_method_addr() const {
185 return (Method**)addr_at(get_interpreter_frame_method_offset());
186 }
187
188 // Mirror
189
190 inline oop* frame::interpreter_frame_mirror_addr() const {
191 return (oop*)addr_at(get_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::interpreter_frame_monitor_size() {
213 return BasicObjectLock::size();
214 }
215
216
217 // expression stack
218 // (the max_stack arguments are used by the GC; see class FrameClosure)
219
220 inline intptr_t* frame::interpreter_frame_expression_stack() const {
221 intptr_t* monitor_end = (intptr_t*) interpreter_frame_monitor_end();
222 return monitor_end-1;
223 }
224
225
226 // Entry frames
227
228 inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const {
229 return (JavaCallWrapper**)addr_at(get_entry_frame_call_wrapper_offset());
230 }
231
232
233 // Compiled frames
234
235 inline oop frame::saved_oop_result(RegisterMap* map) const {
236 oop* result_adr = (oop *)map->location(r0->as_VMReg());
237 guarantee(result_adr != NULL, "bad register save location");
238
239 return (*result_adr);
240 }
241
242 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) {
243 oop* result_adr = (oop *)map->location(r0->as_VMReg());
244 guarantee(result_adr != NULL, "bad register save location");
245
246 *result_adr = obj;
247 }
248
249 #endif // CPU_AARCH32_VM_FRAME_AARCH32_INLINE_HPP