1 /*
2 * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2014, Red Hat Inc. All rights reserved.
4 * Copyright (c) 2020, 2022, Huawei Technologies Co., Ltd. All rights reserved.
5 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 *
7 * This code is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 only, as
9 * published by the Free Software Foundation.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 *
25 */
26
27 #ifndef CPU_RISCV_FRAME_RISCV_INLINE_HPP
28 #define CPU_RISCV_FRAME_RISCV_INLINE_HPP
29
30 #include "code/codeCache.hpp"
31 #include "code/vmreg.inline.hpp"
32
33 // Inline functions for RISCV frames:
34
35 // Constructors:
36
37 inline frame::frame() {
38 _pc = NULL;
39 _sp = NULL;
40 _unextended_sp = NULL;
41 _fp = NULL;
42 _cb = NULL;
43 _deopt_state = unknown;
44 }
45
46 static int spin;
47
48 inline void frame::init(intptr_t* ptr_sp, intptr_t* ptr_fp, address pc) {
49 intptr_t a = intptr_t(ptr_sp);
50 intptr_t b = intptr_t(ptr_fp);
51 _sp = ptr_sp;
52 _unextended_sp = ptr_sp;
53 _fp = ptr_fp;
54 _pc = pc;
55 assert(pc != NULL, "no pc?");
56 _cb = CodeCache::find_blob(pc);
57 adjust_unextended_sp();
58
59 address original_pc = CompiledMethod::get_deopt_original_pc(this);
60 if (original_pc != NULL) {
61 _pc = original_pc;
62 _deopt_state = is_deoptimized;
63 } else {
64 _deopt_state = not_deoptimized;
65 }
66 }
67
68 inline frame::frame(intptr_t* ptr_sp, intptr_t* ptr_fp, address pc) {
69 init(ptr_sp, ptr_fp, pc);
70 }
71
72 inline frame::frame(intptr_t* ptr_sp, intptr_t* unextended_sp, intptr_t* ptr_fp, address pc) {
73 intptr_t a = intptr_t(ptr_sp);
74 intptr_t b = intptr_t(ptr_fp);
75 _sp = ptr_sp;
76 _unextended_sp = unextended_sp;
77 _fp = ptr_fp;
78 _pc = pc;
79 assert(pc != NULL, "no pc?");
80 _cb = CodeCache::find_blob(pc);
81 adjust_unextended_sp();
82
83 address original_pc = CompiledMethod::get_deopt_original_pc(this);
84 if (original_pc != NULL) {
85 _pc = original_pc;
86 assert(_cb->as_compiled_method()->insts_contains_inclusive(_pc),
87 "original PC must be in the main code section of the the compiled method (or must be immediately following it)");
88 _deopt_state = is_deoptimized;
89 } else {
90 _deopt_state = not_deoptimized;
91 }
92 }
93
94 inline frame::frame(intptr_t* ptr_sp, intptr_t* ptr_fp) {
95 intptr_t a = intptr_t(ptr_sp);
96 intptr_t b = intptr_t(ptr_fp);
97 _sp = ptr_sp;
98 _unextended_sp = ptr_sp;
99 _fp = ptr_fp;
100 _pc = (address)(ptr_sp[-1]);
101
102 // Here's a sticky one. This constructor can be called via AsyncGetCallTrace
103 // when last_Java_sp is non-null but the pc fetched is junk. If we are truly
104 // unlucky the junk value could be to a zombied method and we'll die on the
105 // find_blob call. This is also why we can have no asserts on the validity
106 // of the pc we find here. AsyncGetCallTrace -> pd_get_top_frame_for_signal_handler
107 // -> pd_last_frame should use a specialized version of pd_last_frame which could
108 // call a specilaized frame constructor instead of this one.
109 // Then we could use the assert below. However this assert is of somewhat dubious
110 // value.
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 // 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 inline intptr_t* frame::link() const { return (intptr_t*) *(intptr_t **)addr_at(link_offset); }
145
146 inline intptr_t* frame::link_or_null() const {
147 intptr_t** ptr = (intptr_t **)addr_at(link_offset);
148 return os::is_readable_pointer(ptr) ? *ptr : NULL;
149 }
150
151 inline intptr_t* frame::unextended_sp() const { return _unextended_sp; }
152
153 // Return address
154 inline address* frame::sender_pc_addr() const { return (address*) addr_at(return_addr_offset); }
155 inline address frame::sender_pc() const { return *sender_pc_addr(); }
156 inline intptr_t* frame::sender_sp() const { return addr_at(sender_sp_offset); }
157
158 inline intptr_t** frame::interpreter_frame_locals_addr() const {
159 return (intptr_t**)addr_at(interpreter_frame_locals_offset);
160 }
161
162 inline intptr_t* frame::interpreter_frame_last_sp() const {
163 return *(intptr_t**)addr_at(interpreter_frame_last_sp_offset);
164 }
165
166 inline intptr_t* frame::interpreter_frame_bcp_addr() const {
167 return (intptr_t*)addr_at(interpreter_frame_bcp_offset);
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 // Constant pool cache
176
177 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const {
178 return (ConstantPoolCache**)addr_at(interpreter_frame_cache_offset);
179 }
180
181 // Method
182
183 inline Method** frame::interpreter_frame_method_addr() const {
184 return (Method**)addr_at(interpreter_frame_method_offset);
185 }
186
187 // Mirror
188
189 inline oop* frame::interpreter_frame_mirror_addr() const {
190 return (oop*)addr_at(interpreter_frame_mirror_offset);
191 }
192
193 // top of expression stack
194 inline intptr_t* frame::interpreter_frame_tos_address() const {
195 intptr_t* last_sp = interpreter_frame_last_sp();
196 if (last_sp == NULL) {
197 return sp();
198 } else {
199 // sp() may have been extended or shrunk by an adapter. At least
200 // check that we don't fall behind the legal region.
201 // For top deoptimized frame last_sp == interpreter_frame_monitor_end.
202 assert(last_sp <= (intptr_t*) interpreter_frame_monitor_end(), "bad tos");
203 return last_sp;
204 }
205 }
206
207 inline oop* frame::interpreter_frame_temp_oop_addr() const {
208 return (oop *)(fp() + interpreter_frame_oop_temp_offset);
209 }
210
211 inline int frame::interpreter_frame_monitor_size() {
212 return BasicObjectLock::size();
213 }
214
215
216 // expression stack
217 // (the max_stack arguments are used by the GC; see class FrameClosure)
218
219 inline intptr_t* frame::interpreter_frame_expression_stack() const {
220 intptr_t* monitor_end = (intptr_t*) interpreter_frame_monitor_end();
221 return monitor_end-1;
222 }
223
224
225 // Entry frames
226
227 inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const {
228 return (JavaCallWrapper**)addr_at(entry_frame_call_wrapper_offset);
229 }
230
231
232 // Compiled frames
233
234 inline oop frame::saved_oop_result(RegisterMap* map) const {
235 oop* result_adr = (oop *)map->location(x10->as_VMReg());
236 guarantee(result_adr != NULL, "bad register save location");
237 return (*result_adr);
238 }
239
240 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) {
241 oop* result_adr = (oop *)map->location(x10->as_VMReg());
242 guarantee(result_adr != NULL, "bad register save location");
243 *result_adr = obj;
244 }
245
246 #endif // CPU_RISCV_FRAME_RISCV_INLINE_HPP