1 /*
2 * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
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23 */
24
25 #ifndef CPU_SPARC_VM_FRAME_SPARC_INLINE_HPP
26 #define CPU_SPARC_VM_FRAME_SPARC_INLINE_HPP
27
28 #include "asm/macroAssembler.hpp"
29 #include "code/vmreg.inline.hpp"
30 #include "utilities/align.hpp"
31
32 // Inline functions for SPARC frames:
33
34 // Constructors
35
36 inline frame::frame() {
37 _pc = NULL;
38 _sp = NULL;
39 _younger_sp = NULL;
40 _cb = NULL;
41 _deopt_state = unknown;
42 _sp_adjustment_by_callee = 0;
43 }
44
45 // Accessors:
46
47 inline bool frame::equal(frame other) const {
48 bool ret = sp() == other.sp()
49 && fp() == other.fp()
50 && pc() == other.pc();
51 assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction");
52 return ret;
53 }
54
55 // Return unique id for this frame. The id must have a value where we can distinguish
56 // identity and younger/older relationship. NULL represents an invalid (incomparable)
57 // frame.
58 inline intptr_t* frame::id(void) const { return unextended_sp(); }
59
60 // Relationals on frames based
61 // Return true if the frame is younger (more recent activation) than the frame represented by id
62 inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
63 return this->id() < id ; }
64
65 // Return true if the frame is older (less recent activation) than the frame represented by id
66 inline bool frame::is_older(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
67 return this->id() > id ; }
68
69 inline int frame::frame_size(RegisterMap* map) const { return sender_sp() - sp(); }
70
71 inline intptr_t* frame::link() const { return (intptr_t *)(fp()[FP->sp_offset_in_saved_window()] + STACK_BIAS); }
72
73 inline intptr_t* frame::unextended_sp() const { return sp() + _sp_adjustment_by_callee; }
74
75 // return address:
76
77 inline address frame::sender_pc() const { return *I7_addr() + pc_return_offset; }
78
79 inline address* frame::I7_addr() const { return (address*) &sp()[ I7->sp_offset_in_saved_window()]; }
80 inline address* frame::I0_addr() const { return (address*) &sp()[ I0->sp_offset_in_saved_window()]; }
81
82 inline address* frame::O7_addr() const { return (address*) &younger_sp()[ I7->sp_offset_in_saved_window()]; }
83 inline address* frame::O0_addr() const { return (address*) &younger_sp()[ I0->sp_offset_in_saved_window()]; }
84
85 inline intptr_t* frame::sender_sp() const { return fp(); }
86
87 inline intptr_t* frame::real_fp() const { return fp(); }
88
89 // Used only in frame::oopmapreg_to_location
90 // This return a value in VMRegImpl::slot_size
91 inline int frame::pd_oop_map_offset_adjustment() const {
92 return _sp_adjustment_by_callee * VMRegImpl::slots_per_word;
93 }
94
95 inline intptr_t** frame::interpreter_frame_locals_addr() const {
96 return (intptr_t**) sp_addr_at( Llocals->sp_offset_in_saved_window());
97 }
98
99 inline intptr_t* frame::interpreter_frame_bcp_addr() const {
100 return (intptr_t*) sp_addr_at( Lbcp->sp_offset_in_saved_window());
101 }
102
103 inline intptr_t* frame::interpreter_frame_mdp_addr() const {
104 // %%%%% reinterpreting ImethodDataPtr as a mdx
105 return (intptr_t*) sp_addr_at( ImethodDataPtr->sp_offset_in_saved_window());
106 }
107
108 inline jint frame::interpreter_frame_expression_stack_direction() { return -1; }
109
110 // bottom(base) of the expression stack (highest address)
111 inline intptr_t* frame::interpreter_frame_expression_stack() const {
112 return (intptr_t*)interpreter_frame_monitors() - 1;
113 }
114
115 // top of expression stack (lowest address)
116 inline intptr_t* frame::interpreter_frame_tos_address() const {
117 return *interpreter_frame_esp_addr() + 1;
118 }
119
120 inline BasicObjectLock** frame::interpreter_frame_monitors_addr() const {
121 return (BasicObjectLock**) sp_addr_at(Lmonitors->sp_offset_in_saved_window());
122 }
123 inline intptr_t** frame::interpreter_frame_esp_addr() const {
124 return (intptr_t**)sp_addr_at(Lesp->sp_offset_in_saved_window());
125 }
126
127 inline void frame::interpreter_frame_set_tos_address( intptr_t* x ) {
128 *interpreter_frame_esp_addr() = x - 1;
129 }
130
131 // monitor elements
132
133 // in keeping with Intel side: end is lower in memory than begin;
134 // and beginning element is oldest element
135 // Also begin is one past last monitor.
136
137 inline BasicObjectLock* frame::interpreter_frame_monitor_begin() const {
138 int rounded_vm_local_words = align_up((int)frame::interpreter_frame_vm_local_words, WordsPerLong);
139 return (BasicObjectLock *)fp_addr_at(-rounded_vm_local_words);
140 }
141
142 inline BasicObjectLock* frame::interpreter_frame_monitor_end() const {
143 return interpreter_frame_monitors();
144 }
145
146
147 inline void frame::interpreter_frame_set_monitor_end(BasicObjectLock* value) {
148 interpreter_frame_set_monitors(value);
149 }
150
151 inline int frame::interpreter_frame_monitor_size() {
152 return align_up(BasicObjectLock::size(), WordsPerLong);
153 }
154
155 inline Method** frame::interpreter_frame_method_addr() const {
156 return (Method**)sp_addr_at( Lmethod->sp_offset_in_saved_window());
157 }
158
159 inline BasicObjectLock* frame::interpreter_frame_monitors() const {
160 return *interpreter_frame_monitors_addr();
161 }
162
163 inline void frame::interpreter_frame_set_monitors(BasicObjectLock* monitors) {
164 *interpreter_frame_monitors_addr() = monitors;
165 }
166
167 inline oop* frame::interpreter_frame_mirror_addr() const {
168 return (oop*)(fp() + interpreter_frame_mirror_offset);
169 }
170
171 // Constant pool cache
172
173 // where LcpoolCache is saved:
174 inline ConstantPoolCache** frame::interpreter_frame_cpoolcache_addr() const {
175 return (ConstantPoolCache**)sp_addr_at(LcpoolCache->sp_offset_in_saved_window());
176 }
177
178 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const {
179 return (ConstantPoolCache**)sp_addr_at( LcpoolCache->sp_offset_in_saved_window());
180 }
181
182 inline oop* frame::interpreter_frame_temp_oop_addr() const {
183 return (oop *)(fp() + interpreter_frame_oop_temp_offset);
184 }
185
186
187 inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const {
188 // note: adjust this code if the link argument in StubGenerator::call_stub() changes!
189 const Argument link = Argument(0, false);
190 return (JavaCallWrapper**)&sp()[link.as_in().as_register()->sp_offset_in_saved_window()];
191 }
192
193
194 inline int frame::local_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
195 // always allocate non-argument locals 0..5 as if they were arguments:
196 int allocated_above_frame = nof_args;
197 if (allocated_above_frame < callee_register_argument_save_area_words)
198 allocated_above_frame = callee_register_argument_save_area_words;
199 if (allocated_above_frame > max_nof_locals)
200 allocated_above_frame = max_nof_locals;
201
202 // Note: monitors (BasicLock blocks) are never allocated in argument slots
203 //assert(local_index >= 0 && local_index < max_nof_locals, "bad local index");
204 if (local_index < allocated_above_frame)
205 return local_index + callee_register_argument_save_area_sp_offset;
206 else
207 return local_index - (max_nof_locals + max_nof_monitors*2) + compiler_frame_vm_locals_fp_offset;
208 }
209
210 inline int frame::monitor_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
211 assert(local_index >= max_nof_locals && ((local_index - max_nof_locals) & 1) && (local_index - max_nof_locals) < max_nof_monitors*2, "bad monitor index");
212
213 // The compiler uses the __higher__ of two indexes allocated to the monitor.
214 // Increasing local indexes are mapped to increasing memory locations,
215 // so the start of the BasicLock is associated with the __lower__ index.
216
217 int offset = (local_index-1) - (max_nof_locals + max_nof_monitors*2) + compiler_frame_vm_locals_fp_offset;
218
219 // We allocate monitors aligned zero mod 8:
220 assert((offset & 1) == 0, "monitor must be an an even address.");
221 // This works because all monitors are allocated after
222 // all locals, and because the highest address corresponding to any
223 // monitor index is always even.
224 assert((compiler_frame_vm_locals_fp_offset & 1) == 0, "end of monitors must be even address");
225
226 return offset;
227 }
228
229 inline int frame::min_local_offset_for_compiler(int nof_args, int max_nof_locals, int max_nof_monitors) {
230 // always allocate non-argument locals 0..5 as if they were arguments:
231 int allocated_above_frame = nof_args;
232 if (allocated_above_frame < callee_register_argument_save_area_words)
233 allocated_above_frame = callee_register_argument_save_area_words;
234 if (allocated_above_frame > max_nof_locals)
235 allocated_above_frame = max_nof_locals;
236
237 int allocated_in_frame = (max_nof_locals + max_nof_monitors*2) - allocated_above_frame;
238
239 return compiler_frame_vm_locals_fp_offset - allocated_in_frame;
240 }
241
242 // On SPARC, the %lN and %iN registers are non-volatile.
243 inline bool frame::volatile_across_calls(Register reg) {
244 // This predicate is (presently) applied only to temporary registers,
245 // and so it need not recognize non-volatile globals.
246 return reg->is_out() || reg->is_global();
247 }
248
249 inline oop frame::saved_oop_result(RegisterMap* map) const {
250 return *((oop*) map->location(O0->as_VMReg()));
251 }
252
253 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) {
254 *((oop*) map->location(O0->as_VMReg())) = obj;
255 }
256
257 #endif // CPU_SPARC_VM_FRAME_SPARC_INLINE_HPP