1 /* 2 * Copyright (c) 1997, 2015, 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. 22 * 23 */ 24 25 #ifndef CPU_X86_VM_FRAME_X86_INLINE_HPP 26 #define CPU_X86_VM_FRAME_X86_INLINE_HPP 27 28 #include "code/codeCache.hpp" 29 #include "code/vmreg.inline.hpp" 30 31 // Inline functions for Intel frames: 32 33 // Constructors: 34 35 inline frame::frame() { 36 _pc = NULL; 37 _sp = NULL; 38 _unextended_sp = NULL; 39 _fp = NULL; 40 _cb = NULL; 41 _deopt_state = unknown; 42 } 43 44 inline void frame::init(intptr_t* sp, intptr_t* fp, address pc) { 45 _sp = sp; 46 _unextended_sp = sp; 47 _fp = fp; 48 _pc = pc; 49 assert(pc != NULL, "no pc?"); 50 _cb = CodeCache::find_blob(pc); 51 adjust_unextended_sp(); 52 53 address original_pc = nmethod::get_deopt_original_pc(this); 54 if (original_pc != NULL) { 55 _pc = original_pc; 56 _deopt_state = is_deoptimized; 57 } else { 58 _deopt_state = not_deoptimized; 59 } 60 } 61 62 inline frame::frame(intptr_t* sp, intptr_t* fp, address pc) { 63 init(sp, fp, pc); 64 } 65 66 inline frame::frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc) { 67 _sp = sp; 68 _unextended_sp = unextended_sp; 69 _fp = fp; 70 _pc = pc; 71 assert(pc != NULL, "no pc?"); 72 _cb = CodeCache::find_blob(pc); 73 adjust_unextended_sp(); 74 75 address original_pc = nmethod::get_deopt_original_pc(this); 76 if (original_pc != NULL) { 77 _pc = original_pc; 78 assert(((nmethod*)_cb)->insts_contains(_pc), "original PC must be in nmethod"); 79 _deopt_state = is_deoptimized; 80 } else { 81 _deopt_state = not_deoptimized; 82 } 83 } 84 85 inline frame::frame(intptr_t* sp, intptr_t* fp) { 86 _sp = sp; 87 _unextended_sp = sp; 88 _fp = fp; 89 _pc = (address)(sp[-1]); 90 91 // Here's a sticky one. This constructor can be called via AsyncGetCallTrace 92 // when last_Java_sp is non-null but the pc fetched is junk. If we are truly 93 // unlucky the junk value could be to a zombied method and we'll die on the 94 // find_blob call. This is also why we can have no asserts on the validity 95 // of the pc we find here. AsyncGetCallTrace -> pd_get_top_frame_for_signal_handler 96 // -> pd_last_frame should use a specialized version of pd_last_frame which could 97 // call a specialized frame constructor instead of this one. 98 // Then we could use the assert below. However this assert is of somewhat dubious 99 // value. 100 // assert(_pc != NULL, "no pc?"); 101 102 _cb = CodeCache::find_blob(_pc); 103 adjust_unextended_sp(); 104 105 address original_pc = nmethod::get_deopt_original_pc(this); 106 if (original_pc != NULL) { 107 _pc = original_pc; 108 _deopt_state = is_deoptimized; 109 } else { 110 _deopt_state = not_deoptimized; 111 } 112 } 113 114 // Accessors 115 116 inline bool frame::equal(frame other) const { 117 bool ret = sp() == other.sp() 118 && unextended_sp() == other.unextended_sp() 119 && fp() == other.fp() 120 && pc() == other.pc(); 121 assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction"); 122 return ret; 123 } 124 125 // Return unique id for this frame. The id must have a value where we can distinguish 126 // identity and younger/older relationship. NULL represents an invalid (incomparable) 127 // frame. 128 inline intptr_t* frame::id(void) const { return unextended_sp(); } 129 130 // Relationals on frames based 131 // Return true if the frame is younger (more recent activation) than the frame represented by id 132 inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id"); 133 return this->id() < id ; } 134 135 // Return true if the frame is older (less recent activation) than the frame represented by id 136 inline bool frame::is_older(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id"); 137 return this->id() > id ; } 138 139 140 141 inline intptr_t* frame::link() const { return (intptr_t*) *(intptr_t **)addr_at(link_offset); } 142 143 inline intptr_t* frame::unextended_sp() const { return _unextended_sp; } 144 145 // Return address: 146 147 inline address* frame::sender_pc_addr() const { return (address*) addr_at( return_addr_offset); } 148 inline address frame::sender_pc() const { return *sender_pc_addr(); } 149 150 #ifdef CC_INTERP 151 152 inline interpreterState frame::get_interpreterState() const { 153 return ((interpreterState)addr_at( -((int)sizeof(BytecodeInterpreter))/wordSize )); 154 } 155 156 inline intptr_t* frame::sender_sp() const { 157 // Hmm this seems awfully expensive QQQ, is this really called with interpreted frames? 158 if (is_interpreted_frame()) { 159 assert(false, "should never happen"); 160 return get_interpreterState()->sender_sp(); 161 } else { 162 return addr_at(sender_sp_offset); 163 } 164 } 165 166 inline intptr_t** frame::interpreter_frame_locals_addr() const { 167 assert(is_interpreted_frame(), "must be interpreted"); 168 return &(get_interpreterState()->_locals); 169 } 170 171 inline intptr_t* frame::interpreter_frame_bcp_addr() const { 172 assert(is_interpreted_frame(), "must be interpreted"); 173 return (intptr_t*) &(get_interpreterState()->_bcp); 174 } 175 176 177 // Constant pool cache 178 179 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const { 180 assert(is_interpreted_frame(), "must be interpreted"); 181 return &(get_interpreterState()->_constants); 182 } 183 184 // Method 185 186 inline Method** frame::interpreter_frame_method_addr() const { 187 assert(is_interpreted_frame(), "must be interpreted"); 188 return &(get_interpreterState()->_method); 189 } 190 191 inline intptr_t* frame::interpreter_frame_mdp_addr() const { 192 assert(is_interpreted_frame(), "must be interpreted"); 193 return (intptr_t*) &(get_interpreterState()->_mdx); 194 } 195 196 // top of expression stack 197 inline intptr_t* frame::interpreter_frame_tos_address() const { 198 assert(is_interpreted_frame(), "wrong frame type"); 199 return get_interpreterState()->_stack + 1; 200 } 201 202 #else /* asm interpreter */ 203 inline intptr_t* frame::sender_sp() const { return addr_at( sender_sp_offset); } 204 205 inline intptr_t** frame::interpreter_frame_locals_addr() const { 206 return (intptr_t**)addr_at(interpreter_frame_locals_offset); 207 } 208 209 inline intptr_t* frame::interpreter_frame_last_sp() const { 210 return *(intptr_t**)addr_at(interpreter_frame_last_sp_offset); 211 } 212 213 inline intptr_t* frame::interpreter_frame_bcp_addr() const { 214 return (intptr_t*)addr_at(interpreter_frame_bcp_offset); 215 } 216 217 218 inline intptr_t* frame::interpreter_frame_mdp_addr() const { 219 return (intptr_t*)addr_at(interpreter_frame_mdp_offset); 220 } 221 222 223 224 // Constant pool cache 225 226 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const { 227 return (ConstantPoolCache**)addr_at(interpreter_frame_cache_offset); 228 } 229 230 // Method 231 232 inline Method** frame::interpreter_frame_method_addr() const { 233 return (Method**)addr_at(interpreter_frame_method_offset); 234 } 235 236 // top of expression stack 237 inline intptr_t* frame::interpreter_frame_tos_address() const { 238 intptr_t* last_sp = interpreter_frame_last_sp(); 239 if (last_sp == NULL) { 240 return sp(); 241 } else { 242 // sp() may have been extended or shrunk by an adapter. At least 243 // check that we don't fall behind the legal region. 244 // For top deoptimized frame last_sp == interpreter_frame_monitor_end. 245 assert(last_sp <= (intptr_t*) interpreter_frame_monitor_end(), "bad tos"); 246 return last_sp; 247 } 248 } 249 250 inline oop* frame::interpreter_frame_temp_oop_addr() const { 251 return (oop *)(fp() + interpreter_frame_oop_temp_offset); 252 } 253 254 #endif /* CC_INTERP */ 255 256 inline int frame::pd_oop_map_offset_adjustment() const { 257 return 0; 258 } 259 260 inline int frame::interpreter_frame_monitor_size() { 261 return BasicObjectLock::size(); 262 } 263 264 265 // expression stack 266 // (the max_stack arguments are used by the GC; see class FrameClosure) 267 268 inline intptr_t* frame::interpreter_frame_expression_stack() const { 269 intptr_t* monitor_end = (intptr_t*) interpreter_frame_monitor_end(); 270 return monitor_end-1; 271 } 272 273 274 inline jint frame::interpreter_frame_expression_stack_direction() { return -1; } 275 276 277 // Entry frames 278 279 inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const { 280 return (JavaCallWrapper**)addr_at(entry_frame_call_wrapper_offset); 281 } 282 283 // Compiled frames 284 285 inline int frame::local_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) { 286 return (nof_args - local_index + (local_index < nof_args ? 1: -1)); 287 } 288 289 inline int frame::monitor_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) { 290 return local_offset_for_compiler(local_index, nof_args, max_nof_locals, max_nof_monitors); 291 } 292 293 inline int frame::min_local_offset_for_compiler(int nof_args, int max_nof_locals, int max_nof_monitors) { 294 return (nof_args - (max_nof_locals + max_nof_monitors*2) - 1); 295 } 296 297 inline bool frame::volatile_across_calls(Register reg) { 298 return true; 299 } 300 301 inline oop frame::saved_oop_result(RegisterMap* map) const { 302 oop* result_adr = (oop *)map->location(rax->as_VMReg()); 303 guarantee(result_adr != NULL, "bad register save location"); 304 305 return (*result_adr); 306 } 307 308 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) { 309 oop* result_adr = (oop *)map->location(rax->as_VMReg()); 310 guarantee(result_adr != NULL, "bad register save location"); 311 312 *result_adr = obj; 313 } 314 315 #endif // CPU_X86_VM_FRAME_X86_INLINE_HPP