1 /*
2 * Copyright (c) 1997, 2013, 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.
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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
30 // Inline functions for SPARC frames:
31
32 // Constructors
33
34 inline frame::frame() {
35 _pc = NULL;
36 _sp = NULL;
37 _younger_sp = NULL;
38 _cb = NULL;
39 _deopt_state = unknown;
40 _sp_adjustment_by_callee = 0;
41 }
42
43 // Accessors:
44
45 inline bool frame::equal(frame other) const {
46 bool ret = sp() == other.sp()
47 && fp() == other.fp()
48 && pc() == other.pc();
49 assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction");
50 return ret;
51 }
52
53 // Return unique id for this frame. The id must have a value where we can distinguish
54 // identity and younger/older relationship. NULL represents an invalid (incomparable)
55 // frame.
56 inline intptr_t* frame::id(void) const { return unextended_sp(); }
57
58 // Relationals on frames based
59 // Return true if the frame is younger (more recent activation) than the frame represented by id
60 inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
61 return this->id() < id ; }
62
63 // Return true if the frame is older (less recent activation) than the frame represented by id
64 inline bool frame::is_older(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
65 return this->id() > id ; }
66
67 inline int frame::frame_size(RegisterMap* map) const { return sender_sp() - sp(); }
68
69 inline intptr_t* frame::link() const { return (intptr_t *)(fp()[FP->sp_offset_in_saved_window()] + STACK_BIAS); }
70
71 inline void frame::set_link(intptr_t* addr) { assert(link()==addr, "frame nesting is controlled by hardware"); }
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 #ifdef CC_INTERP
96 inline intptr_t** frame::interpreter_frame_locals_addr() const {
97 interpreterState istate = get_interpreterState();
98 return (intptr_t**) &istate->_locals;
99 }
100
101 inline intptr_t* frame::interpreter_frame_bcx_addr() const {
102 interpreterState istate = get_interpreterState();
103 return (intptr_t*) &istate->_bcp;
104 }
105
106 inline intptr_t* frame::interpreter_frame_mdx_addr() const {
107 interpreterState istate = get_interpreterState();
108 return (intptr_t*) &istate->_mdx;
109 }
110
111 inline jint frame::interpreter_frame_expression_stack_direction() { return -1; }
112
113 // bottom(base) of the expression stack (highest address)
114 inline intptr_t* frame::interpreter_frame_expression_stack() const {
115 return (intptr_t*)interpreter_frame_monitor_end() - 1;
116 }
117
118 // top of expression stack (lowest address)
119 inline intptr_t* frame::interpreter_frame_tos_address() const {
120 interpreterState istate = get_interpreterState();
121 return istate->_stack + 1; // Is this off by one? QQQ
122 }
123
124 // monitor elements
125
126 // in keeping with Intel side: end is lower in memory than begin;
127 // and beginning element is oldest element
128 // Also begin is one past last monitor.
129
130 inline BasicObjectLock* frame::interpreter_frame_monitor_begin() const {
131 return get_interpreterState()->monitor_base();
132 }
133
134 inline BasicObjectLock* frame::interpreter_frame_monitor_end() const {
135 return (BasicObjectLock*) get_interpreterState()->stack_base();
136 }
137
138
139 inline int frame::interpreter_frame_monitor_size() {
140 return round_to(BasicObjectLock::size(), WordsPerLong);
141 }
142
143 inline Method** frame::interpreter_frame_method_addr() const {
144 interpreterState istate = get_interpreterState();
145 return &istate->_method;
146 }
147
148
149 // Constant pool cache
150
151 // where LcpoolCache is saved:
152 inline ConstantPoolCache** frame::interpreter_frame_cpoolcache_addr() const {
153 interpreterState istate = get_interpreterState();
154 return &istate->_constants; // should really use accessor
155 }
156
157 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const {
158 interpreterState istate = get_interpreterState();
159 return &istate->_constants;
160 }
161
162 #else // !CC_INTERP
163
164 inline intptr_t** frame::interpreter_frame_locals_addr() const {
165 return (intptr_t**) sp_addr_at( Llocals->sp_offset_in_saved_window());
166 }
167
168 inline intptr_t* frame::interpreter_frame_bcx_addr() const {
169 // %%%%% reinterpreting Lbcp as a bcx
170 return (intptr_t*) sp_addr_at( Lbcp->sp_offset_in_saved_window());
171 }
172
173 inline intptr_t* frame::interpreter_frame_mdx_addr() const {
174 // %%%%% reinterpreting ImethodDataPtr as a mdx
175 return (intptr_t*) sp_addr_at( ImethodDataPtr->sp_offset_in_saved_window());
176 }
177
178 inline jint frame::interpreter_frame_expression_stack_direction() { return -1; }
179
180 // bottom(base) of the expression stack (highest address)
181 inline intptr_t* frame::interpreter_frame_expression_stack() const {
182 return (intptr_t*)interpreter_frame_monitors() - 1;
183 }
184
185 // top of expression stack (lowest address)
186 inline intptr_t* frame::interpreter_frame_tos_address() const {
187 return *interpreter_frame_esp_addr() + 1;
188 }
189
190 inline BasicObjectLock** frame::interpreter_frame_monitors_addr() const {
191 return (BasicObjectLock**) sp_addr_at(Lmonitors->sp_offset_in_saved_window());
192 }
193 inline intptr_t** frame::interpreter_frame_esp_addr() const {
194 return (intptr_t**)sp_addr_at(Lesp->sp_offset_in_saved_window());
195 }
196
197 inline void frame::interpreter_frame_set_tos_address( intptr_t* x ) {
198 *interpreter_frame_esp_addr() = x - 1;
199 }
200
201 // monitor elements
202
203 // in keeping with Intel side: end is lower in memory than begin;
204 // and beginning element is oldest element
205 // Also begin is one past last monitor.
206
207 inline BasicObjectLock* frame::interpreter_frame_monitor_begin() const {
208 int rounded_vm_local_words = round_to(frame::interpreter_frame_vm_local_words, WordsPerLong);
209 return (BasicObjectLock *)fp_addr_at(-rounded_vm_local_words);
210 }
211
212 inline BasicObjectLock* frame::interpreter_frame_monitor_end() const {
213 return interpreter_frame_monitors();
214 }
215
216
217 inline void frame::interpreter_frame_set_monitor_end(BasicObjectLock* value) {
218 interpreter_frame_set_monitors(value);
219 }
220
221 inline int frame::interpreter_frame_monitor_size() {
222 return round_to(BasicObjectLock::size(), WordsPerLong);
223 }
224
225 inline Method** frame::interpreter_frame_method_addr() const {
226 return (Method**)sp_addr_at( Lmethod->sp_offset_in_saved_window());
227 }
228
229
230 // Constant pool cache
231
232 // where LcpoolCache is saved:
233 inline ConstantPoolCache** frame::interpreter_frame_cpoolcache_addr() const {
234 return (ConstantPoolCache**)sp_addr_at(LcpoolCache->sp_offset_in_saved_window());
235 }
236
237 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const {
238 return (ConstantPoolCache**)sp_addr_at( LcpoolCache->sp_offset_in_saved_window());
239 }
240 #endif // CC_INTERP
241
242
243 inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const {
244 // note: adjust this code if the link argument in StubGenerator::call_stub() changes!
245 const Argument link = Argument(0, false);
246 return (JavaCallWrapper**)&sp()[link.as_in().as_register()->sp_offset_in_saved_window()];
247 }
248
249
250 inline int frame::local_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
251 // always allocate non-argument locals 0..5 as if they were arguments:
252 int allocated_above_frame = nof_args;
253 if (allocated_above_frame < callee_register_argument_save_area_words)
254 allocated_above_frame = callee_register_argument_save_area_words;
255 if (allocated_above_frame > max_nof_locals)
256 allocated_above_frame = max_nof_locals;
257
258 // Note: monitors (BasicLock blocks) are never allocated in argument slots
259 //assert(local_index >= 0 && local_index < max_nof_locals, "bad local index");
260 if (local_index < allocated_above_frame)
261 return local_index + callee_register_argument_save_area_sp_offset;
262 else
263 return local_index - (max_nof_locals + max_nof_monitors*2) + compiler_frame_vm_locals_fp_offset;
264 }
265
266 inline int frame::monitor_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
267 assert(local_index >= max_nof_locals && ((local_index - max_nof_locals) & 1) && (local_index - max_nof_locals) < max_nof_monitors*2, "bad monitor index");
268
269 // The compiler uses the __higher__ of two indexes allocated to the monitor.
270 // Increasing local indexes are mapped to increasing memory locations,
271 // so the start of the BasicLock is associated with the __lower__ index.
272
273 int offset = (local_index-1) - (max_nof_locals + max_nof_monitors*2) + compiler_frame_vm_locals_fp_offset;
274
275 // We allocate monitors aligned zero mod 8:
276 assert((offset & 1) == 0, "monitor must be an an even address.");
277 // This works because all monitors are allocated after
278 // all locals, and because the highest address corresponding to any
279 // monitor index is always even.
280 assert((compiler_frame_vm_locals_fp_offset & 1) == 0, "end of monitors must be even address");
281
282 return offset;
283 }
284
285 inline int frame::min_local_offset_for_compiler(int nof_args, int max_nof_locals, int max_nof_monitors) {
286 // always allocate non-argument locals 0..5 as if they were arguments:
287 int allocated_above_frame = nof_args;
288 if (allocated_above_frame < callee_register_argument_save_area_words)
289 allocated_above_frame = callee_register_argument_save_area_words;
290 if (allocated_above_frame > max_nof_locals)
291 allocated_above_frame = max_nof_locals;
292
293 int allocated_in_frame = (max_nof_locals + max_nof_monitors*2) - allocated_above_frame;
294
295 return compiler_frame_vm_locals_fp_offset - allocated_in_frame;
296 }
297
298 // On SPARC, the %lN and %iN registers are non-volatile.
299 inline bool frame::volatile_across_calls(Register reg) {
300 // This predicate is (presently) applied only to temporary registers,
301 // and so it need not recognize non-volatile globals.
302 return reg->is_out() || reg->is_global();
303 }
304
305 inline oop frame::saved_oop_result(RegisterMap* map) const {
306 return *((oop*) map->location(O0->as_VMReg()));
307 }
308
309 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) {
310 *((oop*) map->location(O0->as_VMReg())) = obj;
311 }
312
313 #endif // CPU_SPARC_VM_FRAME_SPARC_INLINE_HPP