1 /*
2 * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2012, 2013 SAP AG. 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 #ifndef CC_INTERP
30 #error "CC_INTERP must be defined on PPC64"
31 #endif
32
33 // Inline functions for ppc64 frames:
34
35 // Find codeblob and set deopt_state.
36 inline void frame::find_codeblob_and_set_pc_and_deopt_state(address pc) {
37 assert(pc != NULL, "precondition: must have PC");
38
39 _cb = CodeCache::find_blob(pc);
40 _pc = pc; // Must be set for get_deopt_original_pc()
41
42 _fp = (intptr_t*)own_abi()->callers_sp;
43 // Use _fp - frame_size, needs to be done between _cb and _pc initialization
44 // and get_deopt_original_pc.
45 adjust_unextended_sp();
46
47 address original_pc = nmethod::get_deopt_original_pc(this);
48 if (original_pc != NULL) {
49 _pc = original_pc;
50 _deopt_state = is_deoptimized;
51 } else {
52 _deopt_state = not_deoptimized;
53 }
54
55 assert(((uint64_t)_sp & 0xf) == 0, "SP must be 16-byte aligned");
56 }
57
58 // Constructors
59
60 // Initialize all fields, _unextended_sp will be adjusted in find_codeblob_and_set_pc_and_deopt_state.
61 inline frame::frame() : _sp(NULL), _unextended_sp(NULL), _fp(NULL), _cb(NULL), _pc(NULL), _deopt_state(unknown) {}
62
63 inline frame::frame(intptr_t* sp) : _sp(sp), _unextended_sp(sp) {
64 find_codeblob_and_set_pc_and_deopt_state((address)own_abi()->lr); // also sets _fp and adjusts _unextended_sp
65 }
66
67 inline frame::frame(intptr_t* sp, address pc) : _sp(sp), _unextended_sp(sp) {
68 find_codeblob_and_set_pc_and_deopt_state(pc); // also sets _fp and adjusts _unextended_sp
69 }
70
71 inline frame::frame(intptr_t* sp, address pc, intptr_t* unextended_sp) : _sp(sp), _unextended_sp(unextended_sp) {
72 find_codeblob_and_set_pc_and_deopt_state(pc); // also sets _fp and adjusts _unextended_sp
73 }
74
75 // Accessors
76
77 // Return unique id for this frame. The id must have a value where we
78 // can distinguish identity and younger/older relationship. NULL
79 // represents an invalid (incomparable) frame.
80 inline intptr_t* frame::id(void) const {
81 // Use the _unextended_pc as the frame's ID. Because we have no
82 // adapters, but resized compiled frames, some of the new code
83 // (e.g. JVMTI) wouldn't work if we return the (current) SP of the
84 // frame.
85 return _unextended_sp;
86 }
87
88 // Return true if this frame is older (less recent activation) than
89 // the frame represented by id.
90 inline bool frame::is_older(intptr_t* id) const {
91 assert(this->id() != NULL && id != NULL, "NULL frame id");
92 // Stack grows towards smaller addresses on ppc64.
93 return this->id() > id;
94 }
95
96 inline int frame::frame_size(RegisterMap* map) const {
97 // Stack grows towards smaller addresses on PPC64: sender is at a higher address.
98 return sender_sp() - sp();
99 }
100
101 // Return the frame's stack pointer before it has been extended by a
102 // c2i adapter. This is needed by deoptimization for ignoring c2i adapter
103 // frames.
104 inline intptr_t* frame::unextended_sp() const {
105 return _unextended_sp;
106 }
107
108 // All frames have this field.
109 inline address frame::sender_pc() const {
110 return (address)callers_abi()->lr;
111 }
112 inline address* frame::sender_pc_addr() const {
113 return (address*)&(callers_abi()->lr);
114 }
115
116 // All frames have this field.
117 inline intptr_t* frame::sender_sp() const {
118 return (intptr_t*)callers_abi();
119 }
120
121 // All frames have this field.
122 inline intptr_t* frame::link() const {
123 return (intptr_t*)callers_abi()->callers_sp;
124 }
125
126 inline intptr_t* frame::real_fp() const {
127 return fp();
128 }
129
130 #ifdef CC_INTERP
131
132 inline interpreterState frame::get_interpreterState() const {
133 return (interpreterState)(((address)callers_abi())
134 - frame::interpreter_frame_cinterpreterstate_size_in_bytes());
135 }
136
137 inline intptr_t** frame::interpreter_frame_locals_addr() const {
138 interpreterState istate = get_interpreterState();
139 return (intptr_t**)&istate->_locals;
140 }
141
142 inline intptr_t* frame::interpreter_frame_bcx_addr() const {
143 interpreterState istate = get_interpreterState();
144 return (intptr_t*)&istate->_bcp;
145 }
146
147 inline intptr_t* frame::interpreter_frame_mdx_addr() const {
148 interpreterState istate = get_interpreterState();
149 return (intptr_t*)&istate->_mdx;
150 }
151
152 inline intptr_t* frame::interpreter_frame_expression_stack() const {
153 return (intptr_t*)interpreter_frame_monitor_end() - 1;
154 }
155
156 inline jint frame::interpreter_frame_expression_stack_direction() {
157 return -1;
158 }
159
160 // top of expression stack
161 inline intptr_t* frame::interpreter_frame_tos_address() const {
162 interpreterState istate = get_interpreterState();
163 return istate->_stack + 1;
164 }
165
166 inline intptr_t* frame::interpreter_frame_tos_at(jint offset) const {
167 return &interpreter_frame_tos_address()[offset];
168 }
169
170 // monitor elements
171
172 // in keeping with Intel side: end is lower in memory than begin;
173 // and beginning element is oldest element
174 // Also begin is one past last monitor.
175
176 inline BasicObjectLock* frame::interpreter_frame_monitor_begin() const {
177 return get_interpreterState()->monitor_base();
178 }
179
180 inline BasicObjectLock* frame::interpreter_frame_monitor_end() const {
181 return (BasicObjectLock*)get_interpreterState()->stack_base();
182 }
183
184 inline int frame::interpreter_frame_cinterpreterstate_size_in_bytes() {
185 // Size of an interpreter object. Not aligned with frame size.
186 return round_to(sizeof(BytecodeInterpreter), 8);
187 }
188
189 inline Method** frame::interpreter_frame_method_addr() const {
190 interpreterState istate = get_interpreterState();
191 return &istate->_method;
192 }
193
194 // Constant pool cache
195
196 inline ConstantPoolCache** frame::interpreter_frame_cpoolcache_addr() const {
197 interpreterState istate = get_interpreterState();
198 return &istate->_constants; // should really use accessor
199 }
200
201 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const {
202 interpreterState istate = get_interpreterState();
203 return &istate->_constants;
204 }
205 #endif // CC_INTERP
206
207 inline int frame::interpreter_frame_monitor_size() {
208 // Number of stack slots for a monitor.
209 return round_to(BasicObjectLock::size(), // number of stack slots
210 WordsPerLong); // number of stack slots for a Java long
211 }
212
213 inline int frame::interpreter_frame_monitor_size_in_bytes() {
214 return frame::interpreter_frame_monitor_size() * wordSize;
215 }
216
217 // entry frames
218
219 inline intptr_t* frame::entry_frame_argument_at(int offset) const {
220 // Since an entry frame always calls the interpreter first, the
221 // parameters are on the stack and relative to known register in the
222 // entry frame.
223 intptr_t* tos = (intptr_t*)get_entry_frame_locals()->arguments_tos_address;
224 return &tos[offset + 1]; // prepushed tos
225 }
226
227 inline JavaCallWrapper* frame::entry_frame_call_wrapper() const {
228 return (JavaCallWrapper*)get_entry_frame_locals()->call_wrapper_address;
229 }
230
231 inline oop frame::saved_oop_result(RegisterMap* map) const {
232 return *((oop*)map->location(R3->as_VMReg()));
233 }
234
235 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) {
236 *((oop*)map->location(R3->as_VMReg())) = obj;
237 }
238
239 #endif // CPU_PPC_VM_FRAME_PPC_INLINE_HPP