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
31 // Inline functions for SPARC frames:
32
33 // Constructors
34
35 inline frame::frame() {
36 _pc = NULL;
37 _sp = NULL;
38 _younger_sp = NULL;
39 _cb = NULL;
40 _deopt_state = unknown;
41 _sp_adjustment_by_callee = 0;
42 }
43
44 // Accessors:
45
46 inline bool frame::equal(frame other) const {
47 bool ret = sp() == other.sp()
48 && fp() == other.fp()
49 && pc() == other.pc();
50 assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction");
51 return ret;
52 }
53
54 // Return unique id for this frame. The id must have a value where we can distinguish
55 // identity and younger/older relationship. NULL represents an invalid (incomparable)
56 // frame.
57 inline intptr_t* frame::id(void) const { return unextended_sp(); }
58
59 // Relationals on frames based
60 // Return true if the frame is younger (more recent activation) than the frame represented by id
61 inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
62 return this->id() < id ; }
63
64 // Return true if the frame is older (less recent activation) than the frame represented by id
65 inline bool frame::is_older(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
66 return this->id() > id ; }
67
68 inline int frame::frame_size(RegisterMap* map) const { return sender_sp() - sp(); }
69
70 inline intptr_t* frame::link() const { return (intptr_t *)(fp()[FP->sp_offset_in_saved_window()] + STACK_BIAS); }
71
72 inline intptr_t* frame::unextended_sp() const { return sp() + _sp_adjustment_by_callee; }
73
74 // return address:
75
76 inline address frame::sender_pc() const { return *I7_addr() + pc_return_offset; }
77
78 inline address* frame::I7_addr() const { return (address*) &sp()[ I7->sp_offset_in_saved_window()]; }
79 inline address* frame::I0_addr() const { return (address*) &sp()[ I0->sp_offset_in_saved_window()]; }
80
81 inline address* frame::O7_addr() const { return (address*) &younger_sp()[ I7->sp_offset_in_saved_window()]; }
82 inline address* frame::O0_addr() const { return (address*) &younger_sp()[ I0->sp_offset_in_saved_window()]; }
83
84 inline intptr_t* frame::sender_sp() const { return fp(); }
85
86 inline intptr_t* frame::real_fp() const { return fp(); }
87
88 // Used only in frame::oopmapreg_to_location
89 // This return a value in VMRegImpl::slot_size
90 inline int frame::pd_oop_map_offset_adjustment() const {
91 return _sp_adjustment_by_callee * VMRegImpl::slots_per_word;
92 }
93
94 inline intptr_t** frame::interpreter_frame_locals_addr() const {
95 return (intptr_t**) sp_addr_at( Llocals->sp_offset_in_saved_window());
96 }
97
98 inline intptr_t* frame::interpreter_frame_bcp_addr() const {
99 return (intptr_t*) sp_addr_at( Lbcp->sp_offset_in_saved_window());
100 }
101
102 inline intptr_t* frame::interpreter_frame_mdp_addr() const {
103 // %%%%% reinterpreting ImethodDataPtr as a mdx
104 return (intptr_t*) sp_addr_at( ImethodDataPtr->sp_offset_in_saved_window());
105 }
106
107 inline jint frame::interpreter_frame_expression_stack_direction() { return -1; }
108
109 // bottom(base) of the expression stack (highest address)
110 inline intptr_t* frame::interpreter_frame_expression_stack() const {
111 return (intptr_t*)interpreter_frame_monitors() - 1;
112 }
113
114 // top of expression stack (lowest address)
115 inline intptr_t* frame::interpreter_frame_tos_address() const {
116 return *interpreter_frame_esp_addr() + 1;
117 }
118
119 inline BasicObjectLock** frame::interpreter_frame_monitors_addr() const {
120 return (BasicObjectLock**) sp_addr_at(Lmonitors->sp_offset_in_saved_window());
121 }
122 inline intptr_t** frame::interpreter_frame_esp_addr() const {
123 return (intptr_t**)sp_addr_at(Lesp->sp_offset_in_saved_window());
124 }
125
126 inline void frame::interpreter_frame_set_tos_address( intptr_t* x ) {
127 *interpreter_frame_esp_addr() = x - 1;
128 }
129
130 // monitor elements
131
132 // in keeping with Intel side: end is lower in memory than begin;
133 // and beginning element is oldest element
134 // Also begin is one past last monitor.
135
136 inline BasicObjectLock* frame::interpreter_frame_monitor_begin() const {
137 int rounded_vm_local_words = align_up((int)frame::interpreter_frame_vm_local_words, WordsPerLong);
138 return (BasicObjectLock *)fp_addr_at(-rounded_vm_local_words);
139 }
140
141 inline BasicObjectLock* frame::interpreter_frame_monitor_end() const {
142 return interpreter_frame_monitors();
143 }
144
145
146 inline void frame::interpreter_frame_set_monitor_end(BasicObjectLock* value) {
147 interpreter_frame_set_monitors(value);
148 }
149
150 inline int frame::interpreter_frame_monitor_size() {
151 return align_up(BasicObjectLock::size(), WordsPerLong);
152 }
153
154 inline Method** frame::interpreter_frame_method_addr() const {
155 return (Method**)sp_addr_at( Lmethod->sp_offset_in_saved_window());
156 }
157
158 inline BasicObjectLock* frame::interpreter_frame_monitors() const {
159 return *interpreter_frame_monitors_addr();
160 }
161
162 inline void frame::interpreter_frame_set_monitors(BasicObjectLock* monitors) {
163 *interpreter_frame_monitors_addr() = monitors;
164 }
165
166 inline oop* frame::interpreter_frame_mirror_addr() const {
167 return (oop*)(fp() + interpreter_frame_mirror_offset);
168 }
169
170 // Constant pool cache
171
172 // where LcpoolCache is saved:
173 inline ConstantPoolCache** frame::interpreter_frame_cpoolcache_addr() const {
174 return (ConstantPoolCache**)sp_addr_at(LcpoolCache->sp_offset_in_saved_window());
175 }
176
177 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const {
178 return (ConstantPoolCache**)sp_addr_at( LcpoolCache->sp_offset_in_saved_window());
179 }
180
181 inline oop* frame::interpreter_frame_temp_oop_addr() const {
182 return (oop *)(fp() + interpreter_frame_oop_temp_offset);
183 }
184
185
186 inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const {
187 // note: adjust this code if the link argument in StubGenerator::call_stub() changes!
188 const Argument link = Argument(0, false);
189 return (JavaCallWrapper**)&sp()[link.as_in().as_register()->sp_offset_in_saved_window()];
190 }
191
192
193 inline int frame::local_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
194 // always allocate non-argument locals 0..5 as if they were arguments:
195 int allocated_above_frame = nof_args;
196 if (allocated_above_frame < callee_register_argument_save_area_words)
197 allocated_above_frame = callee_register_argument_save_area_words;
198 if (allocated_above_frame > max_nof_locals)
199 allocated_above_frame = max_nof_locals;
200
201 // Note: monitors (BasicLock blocks) are never allocated in argument slots
202 //assert(local_index >= 0 && local_index < max_nof_locals, "bad local index");
203 if (local_index < allocated_above_frame)
204 return local_index + callee_register_argument_save_area_sp_offset;
205 else
206 return local_index - (max_nof_locals + max_nof_monitors*2) + compiler_frame_vm_locals_fp_offset;
207 }
208
209 inline int frame::monitor_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
210 assert(local_index >= max_nof_locals && ((local_index - max_nof_locals) & 1) && (local_index - max_nof_locals) < max_nof_monitors*2, "bad monitor index");
211
212 // The compiler uses the __higher__ of two indexes allocated to the monitor.
213 // Increasing local indexes are mapped to increasing memory locations,
214 // so the start of the BasicLock is associated with the __lower__ index.
215
216 int offset = (local_index-1) - (max_nof_locals + max_nof_monitors*2) + compiler_frame_vm_locals_fp_offset;
217
218 // We allocate monitors aligned zero mod 8:
219 assert((offset & 1) == 0, "monitor must be an an even address.");
220 // This works because all monitors are allocated after
221 // all locals, and because the highest address corresponding to any
222 // monitor index is always even.
223 assert((compiler_frame_vm_locals_fp_offset & 1) == 0, "end of monitors must be even address");
224
225 return offset;
226 }
227
228 inline int frame::min_local_offset_for_compiler(int nof_args, int max_nof_locals, int max_nof_monitors) {
229 // always allocate non-argument locals 0..5 as if they were arguments:
230 int allocated_above_frame = nof_args;
231 if (allocated_above_frame < callee_register_argument_save_area_words)
232 allocated_above_frame = callee_register_argument_save_area_words;
233 if (allocated_above_frame > max_nof_locals)
234 allocated_above_frame = max_nof_locals;
235
236 int allocated_in_frame = (max_nof_locals + max_nof_monitors*2) - allocated_above_frame;
237
238 return compiler_frame_vm_locals_fp_offset - allocated_in_frame;
239 }
240
241 // On SPARC, the %lN and %iN registers are non-volatile.
242 inline bool frame::volatile_across_calls(Register reg) {
243 // This predicate is (presently) applied only to temporary registers,
244 // and so it need not recognize non-volatile globals.
245 return reg->is_out() || reg->is_global();
246 }
247
248 inline oop frame::saved_oop_result(RegisterMap* map) const {
249 return *((oop*) map->location(O0->as_VMReg()));
250 }
251
252 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) {
253 *((oop*) map->location(O0->as_VMReg())) = obj;
254 }
255
256 #endif // CPU_SPARC_VM_FRAME_SPARC_INLINE_HPP