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annotate src/cpu/x86/vm/frame_x86.inline.hpp @ 3363:167b70ff3abc
6939861: JVM should handle more conversion operations
Reviewed-by: twisti, jrose
| author | never |
|---|---|
| date | Fri, 06 May 2011 16:33:13 -0700 |
| parents | f95d63e2154a |
| children | 07c2e7ffd1fc |
| rev | line source |
|---|---|
| 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 | |
| 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 * | |
|
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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); | |
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65 adjust_unextended_sp(); |
| 1204 | 66 |
| 67 address original_pc = nmethod::get_deopt_original_pc(this); | |
| 68 if (original_pc != NULL) { | |
| 69 _pc = original_pc; | |
| 1748 | 70 assert(((nmethod*)_cb)->insts_contains(_pc), "original PC must be in nmethod"); |
| 0 | 71 _deopt_state = is_deoptimized; |
| 72 } else { | |
| 73 _deopt_state = not_deoptimized; | |
| 74 } | |
| 75 } | |
| 76 | |
| 77 inline frame::frame(intptr_t* sp, intptr_t* fp) { | |
| 78 _sp = sp; | |
| 79 _unextended_sp = sp; | |
| 80 _fp = fp; | |
| 81 _pc = (address)(sp[-1]); | |
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82 |
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83 // Here's a sticky one. This constructor can be called via AsyncGetCallTrace |
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84 // when last_Java_sp is non-null but the pc fetched is junk. If we are truly |
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85 // unlucky the junk value could be to a zombied method and we'll die on the |
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86 // find_blob call. This is also why we can have no asserts on the validity |
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87 // of the pc we find here. AsyncGetCallTrace -> pd_get_top_frame_for_signal_handler |
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88 // -> pd_last_frame should use a specialized version of pd_last_frame which could |
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89 // call a specilaized frame constructor instead of this one. |
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90 // Then we could use the assert below. However this assert is of somewhat dubious |
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91 // value. |
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92 // assert(_pc != NULL, "no pc?"); |
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93 |
| 0 | 94 _cb = CodeCache::find_blob(_pc); |
| 95 | |
| 1204 | 96 address original_pc = nmethod::get_deopt_original_pc(this); |
| 97 if (original_pc != NULL) { | |
| 98 _pc = original_pc; | |
| 0 | 99 _deopt_state = is_deoptimized; |
| 100 } else { | |
| 101 _deopt_state = not_deoptimized; | |
| 102 } | |
| 103 } | |
| 104 | |
| 105 // Accessors | |
| 106 | |
| 107 inline bool frame::equal(frame other) const { | |
| 108 bool ret = sp() == other.sp() | |
| 109 && unextended_sp() == other.unextended_sp() | |
| 110 && fp() == other.fp() | |
| 111 && pc() == other.pc(); | |
| 112 assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction"); | |
| 113 return ret; | |
| 114 } | |
| 115 | |
| 116 // Return unique id for this frame. The id must have a value where we can distinguish | |
| 117 // identity and younger/older relationship. NULL represents an invalid (incomparable) | |
| 118 // frame. | |
| 119 inline intptr_t* frame::id(void) const { return unextended_sp(); } | |
| 120 | |
| 121 // Relationals on frames based | |
| 122 // Return true if the frame is younger (more recent activation) than the frame represented by id | |
| 123 inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id"); | |
| 124 return this->id() < id ; } | |
| 125 | |
| 126 // Return true if the frame is older (less recent activation) than the frame represented by id | |
| 127 inline bool frame::is_older(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id"); | |
| 128 return this->id() > id ; } | |
| 129 | |
| 130 | |
| 131 | |
| 132 inline intptr_t* frame::link() const { return (intptr_t*) *(intptr_t **)addr_at(link_offset); } | |
| 133 inline void frame::set_link(intptr_t* addr) { *(intptr_t **)addr_at(link_offset) = addr; } | |
| 134 | |
| 135 | |
| 136 inline intptr_t* frame::unextended_sp() const { return _unextended_sp; } | |
| 137 | |
| 138 // Return address: | |
| 139 | |
| 140 inline address* frame::sender_pc_addr() const { return (address*) addr_at( return_addr_offset); } | |
| 141 inline address frame::sender_pc() const { return *sender_pc_addr(); } | |
| 142 | |
| 143 // return address of param, zero origin index. | |
| 144 inline address* frame::native_param_addr(int idx) const { return (address*) addr_at( native_frame_initial_param_offset+idx); } | |
| 145 | |
| 146 #ifdef CC_INTERP | |
| 147 | |
| 148 inline interpreterState frame::get_interpreterState() const { | |
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149 return ((interpreterState)addr_at( -((int)sizeof(BytecodeInterpreter))/wordSize )); |
| 0 | 150 } |
| 151 | |
| 152 inline intptr_t* frame::sender_sp() const { | |
| 153 // Hmm this seems awfully expensive QQQ, is this really called with interpreted frames? | |
| 154 if (is_interpreted_frame()) { | |
| 155 assert(false, "should never happen"); | |
| 156 return get_interpreterState()->sender_sp(); | |
| 157 } else { | |
| 158 return addr_at(sender_sp_offset); | |
| 159 } | |
| 160 } | |
| 161 | |
| 162 inline intptr_t** frame::interpreter_frame_locals_addr() const { | |
| 163 assert(is_interpreted_frame(), "must be interpreted"); | |
| 164 return &(get_interpreterState()->_locals); | |
| 165 } | |
| 166 | |
| 167 inline intptr_t* frame::interpreter_frame_bcx_addr() const { | |
| 168 assert(is_interpreted_frame(), "must be interpreted"); | |
| 304 | 169 return (intptr_t*) &(get_interpreterState()->_bcp); |
| 0 | 170 } |
| 171 | |
| 172 | |
| 173 // Constant pool cache | |
| 174 | |
| 175 inline constantPoolCacheOop* frame::interpreter_frame_cache_addr() const { | |
| 176 assert(is_interpreted_frame(), "must be interpreted"); | |
| 177 return &(get_interpreterState()->_constants); | |
| 178 } | |
| 179 | |
| 180 // Method | |
| 181 | |
| 182 inline methodOop* frame::interpreter_frame_method_addr() const { | |
| 183 assert(is_interpreted_frame(), "must be interpreted"); | |
| 184 return &(get_interpreterState()->_method); | |
| 185 } | |
| 186 | |
| 187 inline intptr_t* frame::interpreter_frame_mdx_addr() const { | |
| 188 assert(is_interpreted_frame(), "must be interpreted"); | |
| 304 | 189 return (intptr_t*) &(get_interpreterState()->_mdx); |
| 0 | 190 } |
| 191 | |
| 192 // top of expression stack | |
| 193 inline intptr_t* frame::interpreter_frame_tos_address() const { | |
| 194 assert(is_interpreted_frame(), "wrong frame type"); | |
| 195 return get_interpreterState()->_stack + 1; | |
| 196 } | |
| 197 | |
| 198 #else /* asm interpreter */ | |
| 199 inline intptr_t* frame::sender_sp() const { return addr_at( sender_sp_offset); } | |
| 200 | |
| 201 inline intptr_t** frame::interpreter_frame_locals_addr() const { | |
| 202 return (intptr_t**)addr_at(interpreter_frame_locals_offset); | |
| 203 } | |
| 204 | |
| 205 inline intptr_t* frame::interpreter_frame_last_sp() const { | |
| 206 return *(intptr_t**)addr_at(interpreter_frame_last_sp_offset); | |
| 207 } | |
| 208 | |
| 209 inline intptr_t* frame::interpreter_frame_bcx_addr() const { | |
| 210 return (intptr_t*)addr_at(interpreter_frame_bcx_offset); | |
| 211 } | |
| 212 | |
| 213 | |
| 214 inline intptr_t* frame::interpreter_frame_mdx_addr() const { | |
| 215 return (intptr_t*)addr_at(interpreter_frame_mdx_offset); | |
| 216 } | |
| 217 | |
| 218 | |
| 219 | |
| 220 // Constant pool cache | |
| 221 | |
| 222 inline constantPoolCacheOop* frame::interpreter_frame_cache_addr() const { | |
| 223 return (constantPoolCacheOop*)addr_at(interpreter_frame_cache_offset); | |
| 224 } | |
| 225 | |
| 226 // Method | |
| 227 | |
| 228 inline methodOop* frame::interpreter_frame_method_addr() const { | |
| 229 return (methodOop*)addr_at(interpreter_frame_method_offset); | |
| 230 } | |
| 231 | |
| 232 // top of expression stack | |
| 233 inline intptr_t* frame::interpreter_frame_tos_address() const { | |
| 234 intptr_t* last_sp = interpreter_frame_last_sp(); | |
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235 if (last_sp == NULL) { |
| 0 | 236 return sp(); |
| 237 } else { | |
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238 // sp() may have been extended or shrunk by an adapter. At least |
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239 // check that we don't fall behind the legal region. |
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240 // For top deoptimized frame last_sp == interpreter_frame_monitor_end. |
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241 assert(last_sp <= (intptr_t*) interpreter_frame_monitor_end(), "bad tos"); |
| 0 | 242 return last_sp; |
| 243 } | |
| 244 } | |
| 245 | |
| 246 #endif /* CC_INTERP */ | |
| 247 | |
| 248 inline int frame::pd_oop_map_offset_adjustment() const { | |
| 249 return 0; | |
| 250 } | |
| 251 | |
| 252 inline int frame::interpreter_frame_monitor_size() { | |
| 253 return BasicObjectLock::size(); | |
| 254 } | |
| 255 | |
| 256 | |
| 257 // expression stack | |
| 258 // (the max_stack arguments are used by the GC; see class FrameClosure) | |
| 259 | |
| 260 inline intptr_t* frame::interpreter_frame_expression_stack() const { | |
| 261 intptr_t* monitor_end = (intptr_t*) interpreter_frame_monitor_end(); | |
| 262 return monitor_end-1; | |
| 263 } | |
| 264 | |
| 265 | |
| 266 inline jint frame::interpreter_frame_expression_stack_direction() { return -1; } | |
| 267 | |
| 268 | |
| 269 // Entry frames | |
| 270 | |
| 271 inline JavaCallWrapper* frame::entry_frame_call_wrapper() const { | |
| 272 return (JavaCallWrapper*)at(entry_frame_call_wrapper_offset); | |
| 273 } | |
| 274 | |
| 275 | |
| 276 // Compiled frames | |
| 277 | |
| 278 inline int frame::local_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) { | |
| 279 return (nof_args - local_index + (local_index < nof_args ? 1: -1)); | |
| 280 } | |
| 281 | |
| 282 inline int frame::monitor_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) { | |
| 283 return local_offset_for_compiler(local_index, nof_args, max_nof_locals, max_nof_monitors); | |
| 284 } | |
| 285 | |
| 286 inline int frame::min_local_offset_for_compiler(int nof_args, int max_nof_locals, int max_nof_monitors) { | |
| 287 return (nof_args - (max_nof_locals + max_nof_monitors*2) - 1); | |
| 288 } | |
| 289 | |
| 290 inline bool frame::volatile_across_calls(Register reg) { | |
| 291 return true; | |
| 292 } | |
| 293 | |
| 294 | |
| 295 | |
| 296 inline oop frame::saved_oop_result(RegisterMap* map) const { | |
| 297 return *((oop*) map->location(rax->as_VMReg())); | |
| 298 } | |
| 299 | |
| 300 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) { | |
| 301 *((oop*) map->location(rax->as_VMReg())) = obj; | |
| 302 } | |
| 1972 | 303 |
| 304 #endif // CPU_X86_VM_FRAME_X86_INLINE_HPP |