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annotate src/cpu/x86/vm/frame_x86.inline.hpp @ 3255:5d046bf49ce7
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author | johnc |
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date | Thu, 14 Apr 2011 13:45:41 -0700 |
parents | f95d63e2154a |
children | 167b70ff3abc |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 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 | |
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7 * published by the Free Software Foundation. | |
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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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef CPU_X86_VM_FRAME_X86_INLINE_HPP |
26 #define CPU_X86_VM_FRAME_X86_INLINE_HPP | |
27 | |
0 | 28 // Inline functions for Intel frames: |
29 | |
30 // Constructors: | |
31 | |
32 inline frame::frame() { | |
33 _pc = NULL; | |
34 _sp = NULL; | |
35 _unextended_sp = NULL; | |
36 _fp = NULL; | |
37 _cb = NULL; | |
38 _deopt_state = unknown; | |
39 } | |
40 | |
1204 | 41 inline frame::frame(intptr_t* sp, intptr_t* fp, address pc) { |
0 | 42 _sp = sp; |
43 _unextended_sp = sp; | |
44 _fp = fp; | |
45 _pc = pc; | |
46 assert(pc != NULL, "no pc?"); | |
47 _cb = CodeCache::find_blob(pc); | |
1204 | 48 |
49 address original_pc = nmethod::get_deopt_original_pc(this); | |
50 if (original_pc != NULL) { | |
51 _pc = original_pc; | |
0 | 52 _deopt_state = is_deoptimized; |
53 } else { | |
54 _deopt_state = not_deoptimized; | |
55 } | |
56 } | |
57 | |
1204 | 58 inline frame::frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc) { |
0 | 59 _sp = sp; |
60 _unextended_sp = unextended_sp; | |
61 _fp = fp; | |
62 _pc = pc; | |
63 assert(pc != NULL, "no pc?"); | |
64 _cb = CodeCache::find_blob(pc); | |
1204 | 65 |
66 address original_pc = nmethod::get_deopt_original_pc(this); | |
67 if (original_pc != NULL) { | |
68 _pc = original_pc; | |
1748 | 69 assert(((nmethod*)_cb)->insts_contains(_pc), "original PC must be in nmethod"); |
0 | 70 _deopt_state = is_deoptimized; |
71 } else { | |
72 _deopt_state = not_deoptimized; | |
73 } | |
74 } | |
75 | |
76 inline frame::frame(intptr_t* sp, intptr_t* fp) { | |
77 _sp = sp; | |
78 _unextended_sp = sp; | |
79 _fp = fp; | |
80 _pc = (address)(sp[-1]); | |
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81 |
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82 // Here's a sticky one. This constructor can be called via AsyncGetCallTrace |
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83 // when last_Java_sp is non-null but the pc fetched is junk. If we are truly |
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84 // unlucky the junk value could be to a zombied method and we'll die on the |
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85 // find_blob call. This is also why we can have no asserts on the validity |
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86 // of the pc we find here. AsyncGetCallTrace -> pd_get_top_frame_for_signal_handler |
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87 // -> pd_last_frame should use a specialized version of pd_last_frame which could |
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88 // call a specilaized frame constructor instead of this one. |
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89 // Then we could use the assert below. However this assert is of somewhat dubious |
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90 // value. |
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91 // assert(_pc != NULL, "no pc?"); |
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92 |
0 | 93 _cb = CodeCache::find_blob(_pc); |
94 | |
1204 | 95 address original_pc = nmethod::get_deopt_original_pc(this); |
96 if (original_pc != NULL) { | |
97 _pc = original_pc; | |
0 | 98 _deopt_state = is_deoptimized; |
99 } else { | |
100 _deopt_state = not_deoptimized; | |
101 } | |
102 } | |
103 | |
104 // Accessors | |
105 | |
106 inline bool frame::equal(frame other) const { | |
107 bool ret = sp() == other.sp() | |
108 && unextended_sp() == other.unextended_sp() | |
109 && fp() == other.fp() | |
110 && pc() == other.pc(); | |
111 assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction"); | |
112 return ret; | |
113 } | |
114 | |
115 // Return unique id for this frame. The id must have a value where we can distinguish | |
116 // identity and younger/older relationship. NULL represents an invalid (incomparable) | |
117 // frame. | |
118 inline intptr_t* frame::id(void) const { return unextended_sp(); } | |
119 | |
120 // Relationals on frames based | |
121 // Return true if the frame is younger (more recent activation) than the frame represented by id | |
122 inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id"); | |
123 return this->id() < id ; } | |
124 | |
125 // Return true if the frame is older (less recent activation) than the frame represented by id | |
126 inline bool frame::is_older(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id"); | |
127 return this->id() > id ; } | |
128 | |
129 | |
130 | |
131 inline intptr_t* frame::link() const { return (intptr_t*) *(intptr_t **)addr_at(link_offset); } | |
132 inline void frame::set_link(intptr_t* addr) { *(intptr_t **)addr_at(link_offset) = addr; } | |
133 | |
134 | |
135 inline intptr_t* frame::unextended_sp() const { return _unextended_sp; } | |
136 | |
137 // Return address: | |
138 | |
139 inline address* frame::sender_pc_addr() const { return (address*) addr_at( return_addr_offset); } | |
140 inline address frame::sender_pc() const { return *sender_pc_addr(); } | |
141 | |
142 // return address of param, zero origin index. | |
143 inline address* frame::native_param_addr(int idx) const { return (address*) addr_at( native_frame_initial_param_offset+idx); } | |
144 | |
145 #ifdef CC_INTERP | |
146 | |
147 inline interpreterState frame::get_interpreterState() const { | |
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148 return ((interpreterState)addr_at( -((int)sizeof(BytecodeInterpreter))/wordSize )); |
0 | 149 } |
150 | |
151 inline intptr_t* frame::sender_sp() const { | |
152 // Hmm this seems awfully expensive QQQ, is this really called with interpreted frames? | |
153 if (is_interpreted_frame()) { | |
154 assert(false, "should never happen"); | |
155 return get_interpreterState()->sender_sp(); | |
156 } else { | |
157 return addr_at(sender_sp_offset); | |
158 } | |
159 } | |
160 | |
161 inline intptr_t** frame::interpreter_frame_locals_addr() const { | |
162 assert(is_interpreted_frame(), "must be interpreted"); | |
163 return &(get_interpreterState()->_locals); | |
164 } | |
165 | |
166 inline intptr_t* frame::interpreter_frame_bcx_addr() const { | |
167 assert(is_interpreted_frame(), "must be interpreted"); | |
304 | 168 return (intptr_t*) &(get_interpreterState()->_bcp); |
0 | 169 } |
170 | |
171 | |
172 // Constant pool cache | |
173 | |
174 inline constantPoolCacheOop* frame::interpreter_frame_cache_addr() const { | |
175 assert(is_interpreted_frame(), "must be interpreted"); | |
176 return &(get_interpreterState()->_constants); | |
177 } | |
178 | |
179 // Method | |
180 | |
181 inline methodOop* frame::interpreter_frame_method_addr() const { | |
182 assert(is_interpreted_frame(), "must be interpreted"); | |
183 return &(get_interpreterState()->_method); | |
184 } | |
185 | |
186 inline intptr_t* frame::interpreter_frame_mdx_addr() const { | |
187 assert(is_interpreted_frame(), "must be interpreted"); | |
304 | 188 return (intptr_t*) &(get_interpreterState()->_mdx); |
0 | 189 } |
190 | |
191 // top of expression stack | |
192 inline intptr_t* frame::interpreter_frame_tos_address() const { | |
193 assert(is_interpreted_frame(), "wrong frame type"); | |
194 return get_interpreterState()->_stack + 1; | |
195 } | |
196 | |
197 #else /* asm interpreter */ | |
198 inline intptr_t* frame::sender_sp() const { return addr_at( sender_sp_offset); } | |
199 | |
200 inline intptr_t** frame::interpreter_frame_locals_addr() const { | |
201 return (intptr_t**)addr_at(interpreter_frame_locals_offset); | |
202 } | |
203 | |
204 inline intptr_t* frame::interpreter_frame_last_sp() const { | |
205 return *(intptr_t**)addr_at(interpreter_frame_last_sp_offset); | |
206 } | |
207 | |
208 inline intptr_t* frame::interpreter_frame_bcx_addr() const { | |
209 return (intptr_t*)addr_at(interpreter_frame_bcx_offset); | |
210 } | |
211 | |
212 | |
213 inline intptr_t* frame::interpreter_frame_mdx_addr() const { | |
214 return (intptr_t*)addr_at(interpreter_frame_mdx_offset); | |
215 } | |
216 | |
217 | |
218 | |
219 // Constant pool cache | |
220 | |
221 inline constantPoolCacheOop* frame::interpreter_frame_cache_addr() const { | |
222 return (constantPoolCacheOop*)addr_at(interpreter_frame_cache_offset); | |
223 } | |
224 | |
225 // Method | |
226 | |
227 inline methodOop* frame::interpreter_frame_method_addr() const { | |
228 return (methodOop*)addr_at(interpreter_frame_method_offset); | |
229 } | |
230 | |
231 // top of expression stack | |
232 inline intptr_t* frame::interpreter_frame_tos_address() const { | |
233 intptr_t* last_sp = interpreter_frame_last_sp(); | |
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234 if (last_sp == NULL) { |
0 | 235 return sp(); |
236 } else { | |
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237 // sp() may have been extended or shrunk by an adapter. At least |
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238 // check that we don't fall behind the legal region. |
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239 // For top deoptimized frame last_sp == interpreter_frame_monitor_end. |
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240 assert(last_sp <= (intptr_t*) interpreter_frame_monitor_end(), "bad tos"); |
0 | 241 return last_sp; |
242 } | |
243 } | |
244 | |
245 #endif /* CC_INTERP */ | |
246 | |
247 inline int frame::pd_oop_map_offset_adjustment() const { | |
248 return 0; | |
249 } | |
250 | |
251 inline int frame::interpreter_frame_monitor_size() { | |
252 return BasicObjectLock::size(); | |
253 } | |
254 | |
255 | |
256 // expression stack | |
257 // (the max_stack arguments are used by the GC; see class FrameClosure) | |
258 | |
259 inline intptr_t* frame::interpreter_frame_expression_stack() const { | |
260 intptr_t* monitor_end = (intptr_t*) interpreter_frame_monitor_end(); | |
261 return monitor_end-1; | |
262 } | |
263 | |
264 | |
265 inline jint frame::interpreter_frame_expression_stack_direction() { return -1; } | |
266 | |
267 | |
268 // Entry frames | |
269 | |
270 inline JavaCallWrapper* frame::entry_frame_call_wrapper() const { | |
271 return (JavaCallWrapper*)at(entry_frame_call_wrapper_offset); | |
272 } | |
273 | |
274 | |
275 // Compiled frames | |
276 | |
277 inline int frame::local_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) { | |
278 return (nof_args - local_index + (local_index < nof_args ? 1: -1)); | |
279 } | |
280 | |
281 inline int frame::monitor_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) { | |
282 return local_offset_for_compiler(local_index, nof_args, max_nof_locals, max_nof_monitors); | |
283 } | |
284 | |
285 inline int frame::min_local_offset_for_compiler(int nof_args, int max_nof_locals, int max_nof_monitors) { | |
286 return (nof_args - (max_nof_locals + max_nof_monitors*2) - 1); | |
287 } | |
288 | |
289 inline bool frame::volatile_across_calls(Register reg) { | |
290 return true; | |
291 } | |
292 | |
293 | |
294 | |
295 inline oop frame::saved_oop_result(RegisterMap* map) const { | |
296 return *((oop*) map->location(rax->as_VMReg())); | |
297 } | |
298 | |
299 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) { | |
300 *((oop*) map->location(rax->as_VMReg())) = obj; | |
301 } | |
1972 | 302 |
303 #endif // CPU_X86_VM_FRAME_X86_INLINE_HPP |