1 /* 2 * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2014, Red Hat Inc. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 #ifndef CPU_AARCH64_VM_FRAME_AARCH64_INLINE_HPP 27 #define CPU_AARCH64_VM_FRAME_AARCH64_INLINE_HPP 28 29 #include "code/codeCache.hpp" 30 #include "code/vmreg.inline.hpp" 31 32 // Inline functions for AArch64 frames: 33 34 // Constructors: 35 36 inline frame::frame() { 37 _pc = NULL; 38 _sp = NULL; 39 _unextended_sp = NULL; 40 _fp = NULL; 41 _cb = NULL; 42 _deopt_state = unknown; 43 } 44 45 static int spin; 46 47 inline void frame::init(intptr_t* sp, intptr_t* fp, address pc) { 48 intptr_t a = intptr_t(sp); 49 intptr_t b = intptr_t(fp); 50 #ifndef PRODUCT 51 if (fp) 52 if (sp > fp || (fp - sp > 0x100000)) 53 for(;;) 54 asm("nop"); 55 #endif 56 _sp = sp; 57 _unextended_sp = sp; 58 _fp = fp; 59 _pc = pc; 60 assert(pc != NULL, "no pc?"); 61 _cb = CodeCache::find_blob(pc); 62 adjust_unextended_sp(); 63 64 address original_pc = nmethod::get_deopt_original_pc(this); 65 if (original_pc != NULL) { 66 _pc = original_pc; 67 _deopt_state = is_deoptimized; 68 } else { 69 _deopt_state = not_deoptimized; 70 } 71 } 72 73 inline frame::frame(intptr_t* sp, intptr_t* fp, address pc) { 74 init(sp, fp, pc); 75 } 76 77 inline frame::frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc) { 78 intptr_t a = intptr_t(sp); 79 intptr_t b = intptr_t(fp); 80 _sp = sp; 81 _unextended_sp = unextended_sp; 82 _fp = fp; 83 _pc = pc; 84 assert(pc != NULL, "no pc?"); 85 _cb = CodeCache::find_blob(pc); 86 adjust_unextended_sp(); 87 88 address original_pc = nmethod::get_deopt_original_pc(this); 89 if (original_pc != NULL) { 90 _pc = original_pc; 91 assert(((nmethod*)_cb)->insts_contains(_pc), "original PC must be in nmethod"); 92 _deopt_state = is_deoptimized; 93 } else { 94 _deopt_state = not_deoptimized; 95 } 96 } 97 98 inline frame::frame(intptr_t* sp, intptr_t* fp) { 99 intptr_t a = intptr_t(sp); 100 intptr_t b = intptr_t(fp); 101 _sp = sp; 102 _unextended_sp = sp; 103 _fp = fp; 104 _pc = (address)(sp[-1]); 105 106 // Here's a sticky one. This constructor can be called via AsyncGetCallTrace 107 // when last_Java_sp is non-null but the pc fetched is junk. If we are truly 108 // unlucky the junk value could be to a zombied method and we'll die on the 109 // find_blob call. This is also why we can have no asserts on the validity 110 // of the pc we find here. AsyncGetCallTrace -> pd_get_top_frame_for_signal_handler 111 // -> pd_last_frame should use a specialized version of pd_last_frame which could 112 // call a specilaized frame constructor instead of this one. 113 // Then we could use the assert below. However this assert is of somewhat dubious 114 // value. 115 // assert(_pc != NULL, "no pc?"); 116 117 _cb = CodeCache::find_blob(_pc); 118 adjust_unextended_sp(); 119 120 address original_pc = nmethod::get_deopt_original_pc(this); 121 if (original_pc != NULL) { 122 _pc = original_pc; 123 _deopt_state = is_deoptimized; 124 } else { 125 _deopt_state = not_deoptimized; 126 } 127 } 128 129 // Accessors 130 131 inline bool frame::equal(frame other) const { 132 bool ret = sp() == other.sp() 133 && unextended_sp() == other.unextended_sp() 134 && fp() == other.fp() 135 && pc() == other.pc(); 136 assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction"); 137 return ret; 138 } 139 140 // Return unique id for this frame. The id must have a value where we can distinguish 141 // identity and younger/older relationship. NULL represents an invalid (incomparable) 142 // frame. 143 inline intptr_t* frame::id(void) const { return unextended_sp(); } 144 145 // Relationals on frames based 146 // Return true if the frame is younger (more recent activation) than the frame represented by id 147 inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id"); 148 return this->id() < id ; } 149 150 // Return true if the frame is older (less recent activation) than the frame represented by id 151 inline bool frame::is_older(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id"); 152 return this->id() > id ; } 153 154 155 156 inline intptr_t* frame::link() const { return (intptr_t*) *(intptr_t **)addr_at(link_offset); } 157 158 159 inline intptr_t* frame::unextended_sp() const { return _unextended_sp; } 160 161 // Return address: 162 163 inline address* frame::sender_pc_addr() const { return (address*) addr_at( return_addr_offset); } 164 inline address frame::sender_pc() const { return *sender_pc_addr(); } 165 166 #ifdef CC_INTERP 167 168 inline interpreterState frame::get_interpreterState() const { 169 return ((interpreterState)addr_at( -((int)sizeof(BytecodeInterpreter))/wordSize )); 170 } 171 172 inline intptr_t* frame::sender_sp() const { 173 // Hmm this seems awfully expensive QQQ, is this really called with interpreted frames? 174 if (is_interpreted_frame()) { 175 assert(false, "should never happen"); 176 return get_interpreterState()->sender_sp(); 177 } else { 178 return addr_at(sender_sp_offset); 179 } 180 } 181 182 inline intptr_t** frame::interpreter_frame_locals_addr() const { 183 assert(is_interpreted_frame(), "must be interpreted"); 184 return &(get_interpreterState()->_locals); 185 } 186 187 inline intptr_t* frame::interpreter_frame_bcx_addr() const { 188 assert(is_interpreted_frame(), "must be interpreted"); 189 return (intptr_t*) &(get_interpreterState()->_bcp); 190 } 191 192 193 // Constant pool cache 194 195 inline constantPoolCacheOop* frame::interpreter_frame_cache_addr() const { 196 assert(is_interpreted_frame(), "must be interpreted"); 197 return &(get_interpreterState()->_constants); 198 } 199 200 // Method 201 202 inline methodOop* frame::interpreter_frame_method_addr() const { 203 assert(is_interpreted_frame(), "must be interpreted"); 204 return &(get_interpreterState()->_method); 205 } 206 207 inline intptr_t* frame::interpreter_frame_mdx_addr() const { 208 assert(is_interpreted_frame(), "must be interpreted"); 209 return (intptr_t*) &(get_interpreterState()->_mdx); 210 } 211 212 // top of expression stack 213 inline intptr_t* frame::interpreter_frame_tos_address() const { 214 assert(is_interpreted_frame(), "wrong frame type"); 215 return get_interpreterState()->_stack + 1; 216 } 217 218 #else /* asm interpreter */ 219 inline intptr_t* frame::sender_sp() const { return addr_at( sender_sp_offset); } 220 221 inline intptr_t** frame::interpreter_frame_locals_addr() const { 222 return (intptr_t**)addr_at(interpreter_frame_locals_offset); 223 } 224 225 inline intptr_t* frame::interpreter_frame_last_sp() const { 226 return *(intptr_t**)addr_at(interpreter_frame_last_sp_offset); 227 } 228 229 inline intptr_t* frame::interpreter_frame_bcp_addr() const { 230 return (intptr_t*)addr_at(interpreter_frame_bcp_offset); 231 } 232 233 inline intptr_t* frame::interpreter_frame_mdp_addr() const { 234 return (intptr_t*)addr_at(interpreter_frame_mdp_offset); 235 } 236 237 238 // Constant pool cache 239 240 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const { 241 return (ConstantPoolCache**)addr_at(interpreter_frame_cache_offset); 242 } 243 244 // Method 245 246 inline Method** frame::interpreter_frame_method_addr() const { 247 return (Method**)addr_at(interpreter_frame_method_offset); 248 } 249 250 // top of expression stack 251 inline intptr_t* frame::interpreter_frame_tos_address() const { 252 intptr_t* last_sp = interpreter_frame_last_sp(); 253 if (last_sp == NULL) { 254 return sp(); 255 } else { 256 // sp() may have been extended or shrunk by an adapter. At least 257 // check that we don't fall behind the legal region. 258 // For top deoptimized frame last_sp == interpreter_frame_monitor_end. 259 assert(last_sp <= (intptr_t*) interpreter_frame_monitor_end(), "bad tos"); 260 return last_sp; 261 } 262 } 263 264 inline oop* frame::interpreter_frame_temp_oop_addr() const { 265 return (oop *)(fp() + interpreter_frame_oop_temp_offset); 266 } 267 268 #endif /* CC_INTERP */ 269 270 inline int frame::pd_oop_map_offset_adjustment() const { 271 return 0; 272 } 273 274 inline int frame::interpreter_frame_monitor_size() { 275 return BasicObjectLock::size(); 276 } 277 278 279 // expression stack 280 // (the max_stack arguments are used by the GC; see class FrameClosure) 281 282 inline intptr_t* frame::interpreter_frame_expression_stack() const { 283 intptr_t* monitor_end = (intptr_t*) interpreter_frame_monitor_end(); 284 return monitor_end-1; 285 } 286 287 288 inline jint frame::interpreter_frame_expression_stack_direction() { return -1; } 289 290 291 // Entry frames 292 293 inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const { 294 return (JavaCallWrapper**)addr_at(entry_frame_call_wrapper_offset); 295 } 296 297 298 // Compiled frames 299 300 inline int frame::local_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) { 301 return (nof_args - local_index + (local_index < nof_args ? 1: -1)); 302 } 303 304 inline int frame::monitor_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) { 305 return local_offset_for_compiler(local_index, nof_args, max_nof_locals, max_nof_monitors); 306 } 307 308 inline int frame::min_local_offset_for_compiler(int nof_args, int max_nof_locals, int max_nof_monitors) { 309 return (nof_args - (max_nof_locals + max_nof_monitors*2) - 1); 310 } 311 312 inline bool frame::volatile_across_calls(Register reg) { 313 return true; 314 } 315 316 317 318 inline oop frame::saved_oop_result(RegisterMap* map) const { 319 oop* result_adr = (oop *)map->location(r0->as_VMReg()); 320 guarantee(result_adr != NULL, "bad register save location"); 321 322 return (*result_adr); 323 } 324 325 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) { 326 oop* result_adr = (oop *)map->location(r0->as_VMReg()); 327 guarantee(result_adr != NULL, "bad register save location"); 328 329 *result_adr = obj; 330 } 331 332 #endif // CPU_AARCH64_VM_FRAME_AARCH64_INLINE_HPP