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 if (_cb->is_deoptimization_stub()) { 82 _deopt_state = is_deoptimized; 83 } else { 84 _deopt_state = not_deoptimized; 85 } 86 } 87 } 88 89 inline frame::frame(intptr_t* sp, intptr_t* fp) { 90 _sp = sp; 91 _unextended_sp = sp; 92 _fp = fp; 93 _pc = (address)(sp[-1]); 94 95 // Here's a sticky one. This constructor can be called via AsyncGetCallTrace 96 // when last_Java_sp is non-null but the pc fetched is junk. If we are truly 97 // unlucky the junk value could be to a zombied method and we'll die on the 98 // find_blob call. This is also why we can have no asserts on the validity 99 // of the pc we find here. AsyncGetCallTrace -> pd_get_top_frame_for_signal_handler 100 // -> pd_last_frame should use a specialized version of pd_last_frame which could 101 // call a specialized frame constructor instead of this one. 102 // Then we could use the assert below. However this assert is of somewhat dubious 103 // value. 104 // assert(_pc != NULL, "no pc?"); 105 106 _cb = CodeCache::find_blob(_pc); 107 adjust_unextended_sp(); 108 109 address original_pc = nmethod::get_deopt_original_pc(this); 110 if (original_pc != NULL) { 111 _pc = original_pc; 112 _deopt_state = is_deoptimized; 113 } else { 114 _deopt_state = not_deoptimized; 115 } 116 } 117 118 // Accessors 119 120 inline bool frame::equal(frame other) const { 121 bool ret = sp() == other.sp() 122 && unextended_sp() == other.unextended_sp() 123 && fp() == other.fp() 124 && pc() == other.pc(); 125 assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction"); 126 return ret; 127 } 128 129 // Return unique id for this frame. The id must have a value where we can distinguish 130 // identity and younger/older relationship. NULL represents an invalid (incomparable) 131 // frame. 132 inline intptr_t* frame::id(void) const { return unextended_sp(); } 133 134 // Relationals on frames based 135 // Return true if the frame is younger (more recent activation) than the frame represented by id 136 inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id"); 137 return this->id() < id ; } 138 139 // Return true if the frame is older (less recent activation) than the frame represented by id 140 inline bool frame::is_older(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id"); 141 return this->id() > id ; } 142 143 144 145 inline intptr_t* frame::link() const { return (intptr_t*) *(intptr_t **)addr_at(link_offset); } 146 147 inline intptr_t* frame::unextended_sp() const { return _unextended_sp; } 148 149 // Return address: 150 151 inline address* frame::sender_pc_addr() const { return (address*) addr_at( return_addr_offset); } 152 inline address frame::sender_pc() const { return *sender_pc_addr(); } 153 154 inline intptr_t* frame::sender_sp() const { return addr_at( sender_sp_offset); } 155 156 inline intptr_t** frame::interpreter_frame_locals_addr() const { 157 return (intptr_t**)addr_at(interpreter_frame_locals_offset); 158 } 159 160 inline intptr_t* frame::interpreter_frame_last_sp() const { 161 return *(intptr_t**)addr_at(interpreter_frame_last_sp_offset); 162 } 163 164 inline intptr_t* frame::interpreter_frame_bcp_addr() const { 165 return (intptr_t*)addr_at(interpreter_frame_bcp_offset); 166 } 167 168 169 inline intptr_t* frame::interpreter_frame_mdp_addr() const { 170 return (intptr_t*)addr_at(interpreter_frame_mdp_offset); 171 } 172 173 174 175 // Constant pool cache 176 177 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const { 178 return (ConstantPoolCache**)addr_at(interpreter_frame_cache_offset); 179 } 180 181 // Method 182 183 inline Method** frame::interpreter_frame_method_addr() const { 184 return (Method**)addr_at(interpreter_frame_method_offset); 185 } 186 187 // top of expression stack 188 inline intptr_t* frame::interpreter_frame_tos_address() const { 189 intptr_t* last_sp = interpreter_frame_last_sp(); 190 if (last_sp == NULL) { 191 return sp(); 192 } else { 193 // sp() may have been extended or shrunk by an adapter. At least 194 // check that we don't fall behind the legal region. 195 // For top deoptimized frame last_sp == interpreter_frame_monitor_end. 196 assert(last_sp <= (intptr_t*) interpreter_frame_monitor_end(), "bad tos"); 197 return last_sp; 198 } 199 } 200 201 inline oop* frame::interpreter_frame_temp_oop_addr() const { 202 return (oop *)(fp() + interpreter_frame_oop_temp_offset); 203 } 204 205 inline int frame::pd_oop_map_offset_adjustment() const { 206 return 0; 207 } 208 209 inline int frame::interpreter_frame_monitor_size() { 210 return BasicObjectLock::size(); 211 } 212 213 214 // expression stack 215 // (the max_stack arguments are used by the GC; see class FrameClosure) 216 217 inline intptr_t* frame::interpreter_frame_expression_stack() const { 218 intptr_t* monitor_end = (intptr_t*) interpreter_frame_monitor_end(); 219 return monitor_end-1; 220 } 221 222 223 inline jint frame::interpreter_frame_expression_stack_direction() { return -1; } 224 225 226 // Entry frames 227 228 inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const { 229 return (JavaCallWrapper**)addr_at(entry_frame_call_wrapper_offset); 230 } 231 232 // Compiled frames 233 234 inline int frame::local_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) { 235 return (nof_args - local_index + (local_index < nof_args ? 1: -1)); 236 } 237 238 inline int frame::monitor_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) { 239 return local_offset_for_compiler(local_index, nof_args, max_nof_locals, max_nof_monitors); 240 } 241 242 inline int frame::min_local_offset_for_compiler(int nof_args, int max_nof_locals, int max_nof_monitors) { 243 return (nof_args - (max_nof_locals + max_nof_monitors*2) - 1); 244 } 245 246 inline bool frame::volatile_across_calls(Register reg) { 247 return true; 248 } 249 250 inline oop frame::saved_oop_result(RegisterMap* map) const { 251 oop* result_adr = (oop *)map->location(rax->as_VMReg()); 252 guarantee(result_adr != NULL, "bad register save location"); 253 254 return (*result_adr); 255 } 256 257 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) { 258 oop* result_adr = (oop *)map->location(rax->as_VMReg()); 259 guarantee(result_adr != NULL, "bad register save location"); 260 261 *result_adr = obj; 262 } 263 264 #endif // CPU_X86_VM_FRAME_X86_INLINE_HPP