1 /* 2 * Copyright (c) 1997, 2018, 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 = CompiledMethod::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 = CompiledMethod::get_deopt_original_pc(this); 76 if (original_pc != NULL) { 77 _pc = original_pc; 78 assert(_cb->as_compiled_method()->insts_contains_inclusive(_pc), 79 "original PC must be in the main code section of the the compiled method (or must be immediately following it)"); 80 _deopt_state = is_deoptimized; 81 } else { 82 if (_cb->is_deoptimization_stub()) { 83 _deopt_state = is_deoptimized; 84 } else { 85 _deopt_state = not_deoptimized; 86 } 87 } 88 } 89 90 inline frame::frame(intptr_t* sp, intptr_t* fp) { 91 _sp = sp; 92 _unextended_sp = sp; 93 _fp = fp; 94 _pc = (address)(sp[-1]); 95 96 // Here's a sticky one. This constructor can be called via AsyncGetCallTrace 97 // when last_Java_sp is non-null but the pc fetched is junk. If we are truly 98 // unlucky the junk value could be to a zombied method and we'll die on the 99 // find_blob call. This is also why we can have no asserts on the validity 100 // of the pc we find here. AsyncGetCallTrace -> pd_get_top_frame_for_signal_handler 101 // -> pd_last_frame should use a specialized version of pd_last_frame which could 102 // call a specialized frame constructor instead of this one. 103 // Then we could use the assert below. However this assert is of somewhat dubious 104 // value. 105 // UPDATE: this constructor is only used by trace_method_handle_stub() now. 106 // assert(_pc != NULL, "no pc?"); 107 108 _cb = CodeCache::find_blob(_pc); 109 adjust_unextended_sp(); 110 111 address original_pc = CompiledMethod::get_deopt_original_pc(this); 112 if (original_pc != NULL) { 113 _pc = original_pc; 114 _deopt_state = is_deoptimized; 115 } else { 116 _deopt_state = not_deoptimized; 117 } 118 } 119 120 // Accessors 121 122 inline bool frame::equal(frame other) const { 123 bool ret = sp() == other.sp() 124 && unextended_sp() == other.unextended_sp() 125 && fp() == other.fp() 126 && pc() == other.pc(); 127 assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction"); 128 return ret; 129 } 130 131 // Return unique id for this frame. The id must have a value where we can distinguish 132 // identity and younger/older relationship. NULL represents an invalid (incomparable) 133 // frame. 134 inline intptr_t* frame::id(void) const { return unextended_sp(); } 135 136 // Relationals on frames based 137 // Return true if the frame is younger (more recent activation) than the frame represented by id 138 inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id"); 139 return this->id() < id ; } 140 141 // Return true if the frame is older (less recent activation) than the frame represented by id 142 inline bool frame::is_older(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id"); 143 return this->id() > id ; } 144 145 146 147 inline intptr_t* frame::link() const { return (intptr_t*) *(intptr_t **)addr_at(link_offset); } 148 149 inline intptr_t* frame::unextended_sp() const { return _unextended_sp; } 150 151 // Return address: 152 153 inline address* frame::sender_pc_addr() const { return (address*) addr_at( return_addr_offset); } 154 inline address frame::sender_pc() const { return *sender_pc_addr(); } 155 156 inline intptr_t* frame::sender_sp() const { return addr_at( sender_sp_offset); } 157 158 inline intptr_t** frame::interpreter_frame_locals_addr() const { 159 return (intptr_t**)addr_at(interpreter_frame_locals_offset); 160 } 161 162 inline intptr_t* frame::interpreter_frame_last_sp() const { 163 return *(intptr_t**)addr_at(interpreter_frame_last_sp_offset); 164 } 165 166 inline intptr_t* frame::interpreter_frame_bcp_addr() const { 167 return (intptr_t*)addr_at(interpreter_frame_bcp_offset); 168 } 169 170 171 inline intptr_t* frame::interpreter_frame_mdp_addr() const { 172 return (intptr_t*)addr_at(interpreter_frame_mdp_offset); 173 } 174 175 176 177 // Constant pool cache 178 179 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const { 180 return (ConstantPoolCache**)addr_at(interpreter_frame_cache_offset); 181 } 182 183 // Method 184 185 inline Method** frame::interpreter_frame_method_addr() const { 186 return (Method**)addr_at(interpreter_frame_method_offset); 187 } 188 189 // Mirror 190 191 inline oop* frame::interpreter_frame_mirror_addr() const { 192 return (oop*)addr_at(interpreter_frame_mirror_offset); 193 } 194 195 // top of expression stack 196 inline intptr_t* frame::interpreter_frame_tos_address() const { 197 intptr_t* last_sp = interpreter_frame_last_sp(); 198 if (last_sp == NULL) { 199 return sp(); 200 } else { 201 // sp() may have been extended or shrunk by an adapter. At least 202 // check that we don't fall behind the legal region. 203 // For top deoptimized frame last_sp == interpreter_frame_monitor_end. 204 assert(last_sp <= (intptr_t*) interpreter_frame_monitor_end(), "bad tos"); 205 return last_sp; 206 } 207 } 208 209 inline oop* frame::interpreter_frame_temp_oop_addr() const { 210 return (oop *)(fp() + interpreter_frame_oop_temp_offset); 211 } 212 213 inline int frame::interpreter_frame_monitor_size() { 214 return BasicObjectLock::size(); 215 } 216 217 218 // expression stack 219 // (the max_stack arguments are used by the GC; see class FrameClosure) 220 221 inline intptr_t* frame::interpreter_frame_expression_stack() const { 222 intptr_t* monitor_end = (intptr_t*) interpreter_frame_monitor_end(); 223 return monitor_end-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 oop frame::saved_oop_result(RegisterMap* map) const { 235 oop* result_adr = (oop *)map->location(rax->as_VMReg()); 236 guarantee(result_adr != NULL, "bad register save location"); 237 238 return (*result_adr); 239 } 240 241 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) { 242 oop* result_adr = (oop *)map->location(rax->as_VMReg()); 243 guarantee(result_adr != NULL, "bad register save location"); 244 245 *result_adr = obj; 246 } 247 248 #endif // CPU_X86_VM_FRAME_X86_INLINE_HPP