1 /* 2 * Copyright (c) 1997, 2016, 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 _sp = sp; 51 _unextended_sp = sp; 52 _fp = fp; 53 _pc = pc; 54 assert(pc != NULL, "no pc?"); 55 _cb = CodeCache::find_blob(pc); 56 adjust_unextended_sp(); 57 58 address original_pc = CompiledMethod::get_deopt_original_pc(this); 59 if (original_pc != NULL) { 60 _pc = original_pc; 61 _deopt_state = is_deoptimized; 62 } else { 63 _deopt_state = not_deoptimized; 64 } 65 } 66 67 inline frame::frame(intptr_t* sp, intptr_t* fp, address pc) { 68 init(sp, fp, pc); 69 } 70 71 inline frame::frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc) { 72 intptr_t a = intptr_t(sp); 73 intptr_t b = intptr_t(fp); 74 _sp = sp; 75 _unextended_sp = unextended_sp; 76 _fp = fp; 77 _pc = pc; 78 assert(pc != NULL, "no pc?"); 79 _cb = CodeCache::find_blob(pc); 80 adjust_unextended_sp(); 81 82 address original_pc = CompiledMethod::get_deopt_original_pc(this); 83 if (original_pc != NULL) { 84 _pc = original_pc; 85 assert(_cb->as_compiled_method()->insts_contains_inclusive(_pc), 86 "original PC must be in the main code section of the the compiled method (or must be immediately following it)"); 87 _deopt_state = is_deoptimized; 88 } else { 89 _deopt_state = not_deoptimized; 90 } 91 } 92 93 inline frame::frame(intptr_t* sp, intptr_t* fp) { 94 intptr_t a = intptr_t(sp); 95 intptr_t b = intptr_t(fp); 96 _sp = sp; 97 _unextended_sp = sp; 98 _fp = fp; 99 _pc = (address)(sp[-1]); 100 101 // Here's a sticky one. This constructor can be called via AsyncGetCallTrace 102 // when last_Java_sp is non-null but the pc fetched is junk. If we are truly 103 // unlucky the junk value could be to a zombied method and we'll die on the 104 // find_blob call. This is also why we can have no asserts on the validity 105 // of the pc we find here. AsyncGetCallTrace -> pd_get_top_frame_for_signal_handler 106 // -> pd_last_frame should use a specialized version of pd_last_frame which could 107 // call a specilaized frame constructor instead of this one. 108 // Then we could use the assert below. However this assert is of somewhat dubious 109 // value. 110 // assert(_pc != NULL, "no pc?"); 111 112 _cb = CodeCache::find_blob(_pc); 113 adjust_unextended_sp(); 114 115 address original_pc = CompiledMethod::get_deopt_original_pc(this); 116 if (original_pc != NULL) { 117 _pc = original_pc; 118 _deopt_state = is_deoptimized; 119 } else { 120 _deopt_state = not_deoptimized; 121 } 122 } 123 124 // Accessors 125 126 inline bool frame::equal(frame other) const { 127 bool ret = sp() == other.sp() 128 && unextended_sp() == other.unextended_sp() 129 && fp() == other.fp() 130 && pc() == other.pc(); 131 assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction"); 132 return ret; 133 } 134 135 // Return unique id for this frame. The id must have a value where we can distinguish 136 // identity and younger/older relationship. NULL represents an invalid (incomparable) 137 // frame. 138 inline intptr_t* frame::id(void) const { return unextended_sp(); } 139 140 // Relationals on frames based 141 // Return true if the frame is younger (more recent activation) than the frame represented by id 142 inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id"); 143 return this->id() < id ; } 144 145 // Return true if the frame is older (less recent activation) than the frame represented by id 146 inline bool frame::is_older(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id"); 147 return this->id() > id ; } 148 149 150 151 inline intptr_t* frame::link() const { return (intptr_t*) *(intptr_t **)addr_at(link_offset); } 152 153 154 inline intptr_t* frame::unextended_sp() const { return _unextended_sp; } 155 156 // Return address: 157 158 inline address* frame::sender_pc_addr() const { return (address*) addr_at( return_addr_offset); } 159 inline address frame::sender_pc() const { return *sender_pc_addr(); } 160 161 inline intptr_t* frame::sender_sp() const { return addr_at( sender_sp_offset); } 162 163 inline intptr_t** frame::interpreter_frame_locals_addr() const { 164 return (intptr_t**)addr_at(interpreter_frame_locals_offset); 165 } 166 167 inline intptr_t* frame::interpreter_frame_last_sp() const { 168 return *(intptr_t**)addr_at(interpreter_frame_last_sp_offset); 169 } 170 171 inline intptr_t* frame::interpreter_frame_bcp_addr() const { 172 return (intptr_t*)addr_at(interpreter_frame_bcp_offset); 173 } 174 175 inline intptr_t* frame::interpreter_frame_mdp_addr() const { 176 return (intptr_t*)addr_at(interpreter_frame_mdp_offset); 177 } 178 179 180 // Constant pool cache 181 182 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const { 183 return (ConstantPoolCache**)addr_at(interpreter_frame_cache_offset); 184 } 185 186 // Method 187 188 inline Method** frame::interpreter_frame_method_addr() const { 189 return (Method**)addr_at(interpreter_frame_method_offset); 190 } 191 192 // Mirror 193 194 inline oop* frame::interpreter_frame_mirror_addr() const { 195 return (oop*)addr_at(interpreter_frame_mirror_offset); 196 } 197 198 // top of expression stack 199 inline intptr_t* frame::interpreter_frame_tos_address() const { 200 intptr_t* last_sp = interpreter_frame_last_sp(); 201 if (last_sp == NULL) { 202 return sp(); 203 } else { 204 // sp() may have been extended or shrunk by an adapter. At least 205 // check that we don't fall behind the legal region. 206 // For top deoptimized frame last_sp == interpreter_frame_monitor_end. 207 assert(last_sp <= (intptr_t*) interpreter_frame_monitor_end(), "bad tos"); 208 return last_sp; 209 } 210 } 211 212 inline oop* frame::interpreter_frame_temp_oop_addr() const { 213 return (oop *)(fp() + interpreter_frame_oop_temp_offset); 214 } 215 216 inline int frame::pd_oop_map_offset_adjustment() const { 217 return 0; 218 } 219 220 inline int frame::interpreter_frame_monitor_size() { 221 return BasicObjectLock::size(); 222 } 223 224 225 // expression stack 226 // (the max_stack arguments are used by the GC; see class FrameClosure) 227 228 inline intptr_t* frame::interpreter_frame_expression_stack() const { 229 intptr_t* monitor_end = (intptr_t*) interpreter_frame_monitor_end(); 230 return monitor_end-1; 231 } 232 233 234 inline jint frame::interpreter_frame_expression_stack_direction() { return -1; } 235 236 237 // Entry frames 238 239 inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const { 240 return (JavaCallWrapper**)addr_at(entry_frame_call_wrapper_offset); 241 } 242 243 244 // Compiled frames 245 246 inline int frame::local_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) { 247 return (nof_args - local_index + (local_index < nof_args ? 1: -1)); 248 } 249 250 inline int frame::monitor_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) { 251 return local_offset_for_compiler(local_index, nof_args, max_nof_locals, max_nof_monitors); 252 } 253 254 inline int frame::min_local_offset_for_compiler(int nof_args, int max_nof_locals, int max_nof_monitors) { 255 return (nof_args - (max_nof_locals + max_nof_monitors*2) - 1); 256 } 257 258 inline bool frame::volatile_across_calls(Register reg) { 259 return true; 260 } 261 262 263 264 inline oop frame::saved_oop_result(RegisterMap* map) const { 265 oop* result_adr = (oop *)map->location(r0->as_VMReg()); 266 guarantee(result_adr != NULL, "bad register save location"); 267 268 return (*result_adr); 269 } 270 271 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) { 272 oop* result_adr = (oop *)map->location(r0->as_VMReg()); 273 guarantee(result_adr != NULL, "bad register save location"); 274 275 *result_adr = obj; 276 } 277 278 #endif // CPU_AARCH64_VM_FRAME_AARCH64_INLINE_HPP