1 /*
2 * Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2012, 2015 SAP SE. 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.
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24 */
25
26 #ifndef CPU_PPC_VM_FRAME_PPC_INLINE_HPP
27 #define CPU_PPC_VM_FRAME_PPC_INLINE_HPP
28
29 #include "code/codeCache.hpp"
30 #include "code/vmreg.inline.hpp"
31
32 // Inline functions for ppc64 frames:
33
34 // Find codeblob and set deopt_state.
35 inline void frame::find_codeblob_and_set_pc_and_deopt_state(address pc) {
36 assert(pc != NULL, "precondition: must have PC");
37
38 _cb = CodeCache::find_blob(pc);
39 _pc = pc; // Must be set for get_deopt_original_pc()
40
41 _fp = (intptr_t*)own_abi()->callers_sp;
42
43 address original_pc = nmethod::get_deopt_original_pc(this);
44 if (original_pc != NULL) {
45 _pc = original_pc;
46 _deopt_state = is_deoptimized;
47 } else {
48 _deopt_state = not_deoptimized;
49 }
50
51 assert(((uint64_t)_sp & 0xf) == 0, "SP must be 16-byte aligned");
52 }
53
54 // Constructors
55
56 // Initialize all fields, _unextended_sp will be adjusted in find_codeblob_and_set_pc_and_deopt_state.
57 inline frame::frame() : _sp(NULL), _unextended_sp(NULL), _fp(NULL), _cb(NULL), _pc(NULL), _deopt_state(unknown) {}
58
59 inline frame::frame(intptr_t* sp) : _sp(sp), _unextended_sp(sp) {
60 find_codeblob_and_set_pc_and_deopt_state((address)own_abi()->lr); // also sets _fp and adjusts _unextended_sp
61 }
62
63 inline frame::frame(intptr_t* sp, address pc) : _sp(sp), _unextended_sp(sp) {
64 find_codeblob_and_set_pc_and_deopt_state(pc); // also sets _fp and adjusts _unextended_sp
65 }
66
67 inline frame::frame(intptr_t* sp, address pc, intptr_t* unextended_sp) : _sp(sp), _unextended_sp(unextended_sp) {
68 find_codeblob_and_set_pc_and_deopt_state(pc); // also sets _fp and adjusts _unextended_sp
69 }
70
71 // Accessors
72
73 // Return unique id for this frame. The id must have a value where we
74 // can distinguish identity and younger/older relationship. NULL
75 // represents an invalid (incomparable) frame.
76 inline intptr_t* frame::id(void) const {
77 // Use _fp. _sp or _unextended_sp wouldn't be correct due to resizing.
78 return _fp;
79 }
80
81 // Return true if this frame is older (less recent activation) than
82 // the frame represented by id.
83 inline bool frame::is_older(intptr_t* id) const {
84 assert(this->id() != NULL && id != NULL, "NULL frame id");
85 // Stack grows towards smaller addresses on ppc64.
86 return this->id() > id;
87 }
88
89 inline int frame::frame_size(RegisterMap* map) const {
90 // Stack grows towards smaller addresses on PPC64: sender is at a higher address.
91 return sender_sp() - sp();
92 }
93
94 // Return the frame's stack pointer before it has been extended by a
95 // c2i adapter. This is needed by deoptimization for ignoring c2i adapter
96 // frames.
97 inline intptr_t* frame::unextended_sp() const {
98 return _unextended_sp;
99 }
100
101 // All frames have this field.
102 inline address frame::sender_pc() const {
103 return (address)callers_abi()->lr;
104 }
105 inline address* frame::sender_pc_addr() const {
106 return (address*)&(callers_abi()->lr);
107 }
108
109 // All frames have this field.
110 inline intptr_t* frame::sender_sp() const {
111 return (intptr_t*)callers_abi();
112 }
113
114 // All frames have this field.
115 inline intptr_t* frame::link() const {
116 return (intptr_t*)callers_abi()->callers_sp;
117 }
118
119 inline intptr_t* frame::real_fp() const {
120 return fp();
121 }
122
123 // Template Interpreter frame value accessors.
124
125 inline frame::ijava_state* frame::get_ijava_state() const {
126 return (ijava_state*) ((uintptr_t)fp() - ijava_state_size);
127 }
128
129 inline intptr_t** frame::interpreter_frame_locals_addr() const {
130 return (intptr_t**) &(get_ijava_state()->locals);
131 }
132 inline intptr_t* frame::interpreter_frame_bcp_addr() const {
133 return (intptr_t*) &(get_ijava_state()->bcp);
134 }
135 inline intptr_t* frame::interpreter_frame_mdp_addr() const {
136 return (intptr_t*) &(get_ijava_state()->mdx);
137 }
138 // Pointer beyond the "oldest/deepest" BasicObjectLock on stack.
139 inline BasicObjectLock* frame::interpreter_frame_monitor_end() const {
140 return (BasicObjectLock *) get_ijava_state()->monitors;
141 }
142
143 inline BasicObjectLock* frame::interpreter_frame_monitor_begin() const {
144 return (BasicObjectLock *) get_ijava_state();
145 }
146
147 // Return register stack slot addr at which currently interpreted method is found.
148 inline Method** frame::interpreter_frame_method_addr() const {
149 return (Method**) &(get_ijava_state()->method);
150 }
151 inline ConstantPoolCache** frame::interpreter_frame_cpoolcache_addr() const {
152 return (ConstantPoolCache**) &(get_ijava_state()->cpoolCache);
153 }
154 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const {
155 return (ConstantPoolCache**) &(get_ijava_state()->cpoolCache);
156 }
157
158 inline oop* frame::interpreter_frame_temp_oop_addr() const {
159 return (oop *) &(get_ijava_state()->oop_tmp);
160 }
161 inline intptr_t* frame::interpreter_frame_esp() const {
162 return (intptr_t*) get_ijava_state()->esp;
163 }
164
165 // Convenient setters
166 inline void frame::interpreter_frame_set_monitor_end(BasicObjectLock* end) { get_ijava_state()->monitors = (intptr_t) end;}
167 inline void frame::interpreter_frame_set_cpcache(ConstantPoolCache* cp) { *frame::interpreter_frame_cpoolcache_addr() = cp; }
168 inline void frame::interpreter_frame_set_esp(intptr_t* esp) { get_ijava_state()->esp = (intptr_t) esp; }
169 inline void frame::interpreter_frame_set_top_frame_sp(intptr_t* top_frame_sp) { get_ijava_state()->top_frame_sp = (intptr_t) top_frame_sp; }
170 inline void frame::interpreter_frame_set_sender_sp(intptr_t* sender_sp) { get_ijava_state()->sender_sp = (intptr_t) sender_sp; }
171
172 inline intptr_t* frame::interpreter_frame_expression_stack() const {
173 return (intptr_t*)interpreter_frame_monitor_end() - 1;
174 }
175
176 inline jint frame::interpreter_frame_expression_stack_direction() {
177 return -1;
178 }
179
180 // top of expression stack
181 inline intptr_t* frame::interpreter_frame_tos_address() const {
182 return ((intptr_t*) get_ijava_state()->esp) + Interpreter::stackElementWords;
183 }
184
185 inline intptr_t* frame::interpreter_frame_tos_at(jint offset) const {
186 return &interpreter_frame_tos_address()[offset];
187 }
188
189 inline int frame::interpreter_frame_monitor_size() {
190 // Number of stack slots for a monitor.
191 return round_to(BasicObjectLock::size(), // number of stack slots
192 WordsPerLong); // number of stack slots for a Java long
193 }
194
195 inline int frame::interpreter_frame_monitor_size_in_bytes() {
196 return frame::interpreter_frame_monitor_size() * wordSize;
197 }
198
199 // entry frames
200
201 inline intptr_t* frame::entry_frame_argument_at(int offset) const {
202 // Since an entry frame always calls the interpreter first, the
203 // parameters are on the stack and relative to known register in the
204 // entry frame.
205 intptr_t* tos = (intptr_t*)get_entry_frame_locals()->arguments_tos_address;
206 return &tos[offset + 1]; // prepushed tos
207 }
208
209 inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const {
210 return (JavaCallWrapper**)&get_entry_frame_locals()->call_wrapper_address;
211 }
212
213 inline oop frame::saved_oop_result(RegisterMap* map) const {
214 return *((oop*)map->location(R3->as_VMReg()));
215 }
216
217 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) {
218 *((oop*)map->location(R3->as_VMReg())) = obj;
219 }
220
221 #endif // CPU_PPC_VM_FRAME_PPC_INLINE_HPP