1 /*
2 * Copyright (c) 1997, 2015, 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
22 * questions.
23 *
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 = nmethod::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 = nmethod::get_deopt_original_pc(this);
83 if (original_pc != NULL) {
84 _pc = original_pc;
85 assert(((nmethod*)_cb)->insts_contains(_pc), "original PC must be in nmethod");
86 _deopt_state = is_deoptimized;
87 } else {
88 _deopt_state = not_deoptimized;
89 }
90 }
91
92 inline frame::frame(intptr_t* sp, intptr_t* fp) {
93 intptr_t a = intptr_t(sp);
94 intptr_t b = intptr_t(fp);
95 _sp = sp;
96 _unextended_sp = sp;
97 _fp = fp;
98 _pc = (address)(sp[-1]);
99
100 // Here's a sticky one. This constructor can be called via AsyncGetCallTrace
101 // when last_Java_sp is non-null but the pc fetched is junk. If we are truly
102 // unlucky the junk value could be to a zombied method and we'll die on the
103 // find_blob call. This is also why we can have no asserts on the validity
104 // of the pc we find here. AsyncGetCallTrace -> pd_get_top_frame_for_signal_handler
105 // -> pd_last_frame should use a specialized version of pd_last_frame which could
106 // call a specilaized frame constructor instead of this one.
107 // Then we could use the assert below. However this assert is of somewhat dubious
108 // value.
109 // assert(_pc != NULL, "no pc?");
110
111 _cb = CodeCache::find_blob(_pc);
112 adjust_unextended_sp();
113
114 address original_pc = nmethod::get_deopt_original_pc(this);
115 if (original_pc != NULL) {
116 _pc = original_pc;
117 _deopt_state = is_deoptimized;
118 } else {
119 _deopt_state = not_deoptimized;
120 }
121 }
122
123 // Accessors
124
125 inline bool frame::equal(frame other) const {
126 bool ret = sp() == other.sp()
127 && unextended_sp() == other.unextended_sp()
128 && fp() == other.fp()
129 && pc() == other.pc();
130 assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction");
131 return ret;
132 }
133
134 // Return unique id for this frame. The id must have a value where we can distinguish
135 // identity and younger/older relationship. NULL represents an invalid (incomparable)
136 // frame.
137 inline intptr_t* frame::id(void) const { return unextended_sp(); }
138
139 // Relationals on frames based
140 // Return true if the frame is younger (more recent activation) than the frame represented by id
141 inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
142 return this->id() < id ; }
143
144 // Return true if the frame is older (less recent activation) than the frame represented by id
145 inline bool frame::is_older(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
146 return this->id() > id ; }
147
148
149
150 inline intptr_t* frame::link() const { return (intptr_t*) *(intptr_t **)addr_at(link_offset); }
151
152
153 inline intptr_t* frame::unextended_sp() const { return _unextended_sp; }
154
155 // Return address:
156
157 inline address* frame::sender_pc_addr() const { return (address*) addr_at( return_addr_offset); }
158 inline address frame::sender_pc() const { return *sender_pc_addr(); }
159
160 #ifdef CC_INTERP
161
162 inline interpreterState frame::get_interpreterState() const {
163 return ((interpreterState)addr_at( -((int)sizeof(BytecodeInterpreter))/wordSize ));
164 }
165
166 inline intptr_t* frame::sender_sp() const {
167 // Hmm this seems awfully expensive QQQ, is this really called with interpreted frames?
168 if (is_interpreted_frame()) {
169 assert(false, "should never happen");
170 return get_interpreterState()->sender_sp();
171 } else {
172 return addr_at(sender_sp_offset);
173 }
174 }
175
176 inline intptr_t** frame::interpreter_frame_locals_addr() const {
177 assert(is_interpreted_frame(), "must be interpreted");
178 return &(get_interpreterState()->_locals);
179 }
180
181 inline intptr_t* frame::interpreter_frame_bcx_addr() const {
182 assert(is_interpreted_frame(), "must be interpreted");
183 return (intptr_t*) &(get_interpreterState()->_bcp);
184 }
185
186
187 // Constant pool cache
188
189 inline constantPoolCacheOop* frame::interpreter_frame_cache_addr() const {
190 assert(is_interpreted_frame(), "must be interpreted");
191 return &(get_interpreterState()->_constants);
192 }
193
194 // Method
195
196 inline methodOop* frame::interpreter_frame_method_addr() const {
197 assert(is_interpreted_frame(), "must be interpreted");
198 return &(get_interpreterState()->_method);
199 }
200
201 inline intptr_t* frame::interpreter_frame_mdx_addr() const {
202 assert(is_interpreted_frame(), "must be interpreted");
203 return (intptr_t*) &(get_interpreterState()->_mdx);
204 }
205
206 // top of expression stack
207 inline intptr_t* frame::interpreter_frame_tos_address() const {
208 assert(is_interpreted_frame(), "wrong frame type");
209 return get_interpreterState()->_stack + 1;
210 }
211
212 #else /* asm interpreter */
213 inline intptr_t* frame::sender_sp() const { return addr_at( sender_sp_offset); }
214
215 inline intptr_t** frame::interpreter_frame_locals_addr() const {
216 return (intptr_t**)addr_at(interpreter_frame_locals_offset);
217 }
218
219 inline intptr_t* frame::interpreter_frame_last_sp() const {
220 return *(intptr_t**)addr_at(interpreter_frame_last_sp_offset);
221 }
222
223 inline intptr_t* frame::interpreter_frame_bcp_addr() const {
224 return (intptr_t*)addr_at(interpreter_frame_bcp_offset);
225 }
226
227 inline intptr_t* frame::interpreter_frame_mdp_addr() const {
228 return (intptr_t*)addr_at(interpreter_frame_mdp_offset);
229 }
230
231
232 // Constant pool cache
233
234 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const {
235 return (ConstantPoolCache**)addr_at(interpreter_frame_cache_offset);
236 }
237
238 // Method
239
240 inline Method** frame::interpreter_frame_method_addr() const {
241 return (Method**)addr_at(interpreter_frame_method_offset);
242 }
243
244 // top of expression stack
245 inline intptr_t* frame::interpreter_frame_tos_address() const {
246 intptr_t* last_sp = interpreter_frame_last_sp();
247 if (last_sp == NULL) {
248 return sp();
249 } else {
250 // sp() may have been extended or shrunk by an adapter. At least
251 // check that we don't fall behind the legal region.
252 // For top deoptimized frame last_sp == interpreter_frame_monitor_end.
253 assert(last_sp <= (intptr_t*) interpreter_frame_monitor_end(), "bad tos");
254 return last_sp;
255 }
256 }
257
258 inline oop* frame::interpreter_frame_temp_oop_addr() const {
259 return (oop *)(fp() + interpreter_frame_oop_temp_offset);
260 }
261
262 #endif /* CC_INTERP */
263
264 inline int frame::pd_oop_map_offset_adjustment() const {
265 return 0;
266 }
267
268 inline int frame::interpreter_frame_monitor_size() {
269 return BasicObjectLock::size();
270 }
271
272
273 // expression stack
274 // (the max_stack arguments are used by the GC; see class FrameClosure)
275
276 inline intptr_t* frame::interpreter_frame_expression_stack() const {
277 intptr_t* monitor_end = (intptr_t*) interpreter_frame_monitor_end();
278 return monitor_end-1;
279 }
280
281
282 inline jint frame::interpreter_frame_expression_stack_direction() { return -1; }
283
284
285 // Entry frames
286
287 inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const {
288 return (JavaCallWrapper**)addr_at(entry_frame_call_wrapper_offset);
289 }
290
291
292 // Compiled frames
293
294 inline int frame::local_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
295 return (nof_args - local_index + (local_index < nof_args ? 1: -1));
296 }
297
298 inline int frame::monitor_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
299 return local_offset_for_compiler(local_index, nof_args, max_nof_locals, max_nof_monitors);
300 }
301
302 inline int frame::min_local_offset_for_compiler(int nof_args, int max_nof_locals, int max_nof_monitors) {
303 return (nof_args - (max_nof_locals + max_nof_monitors*2) - 1);
304 }
305
306 inline bool frame::volatile_across_calls(Register reg) {
307 return true;
308 }
309
310
311
312 inline oop frame::saved_oop_result(RegisterMap* map) const {
313 oop* result_adr = (oop *)map->location(r0->as_VMReg());
314 guarantee(result_adr != NULL, "bad register save location");
315
316 return (*result_adr);
317 }
318
319 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) {
320 oop* result_adr = (oop *)map->location(r0->as_VMReg());
321 guarantee(result_adr != NULL, "bad register save location");
322
323 *result_adr = obj;
324 }
325
326 #endif // CPU_AARCH64_VM_FRAME_AARCH64_INLINE_HPP