1 /* 2 * Copyright (c) 1997, 2013, 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 30 // Inline functions for Intel frames: 31 32 // Constructors: 33 34 inline frame::frame() { 35 _pc = NULL; 36 _sp = NULL; 37 _unextended_sp = NULL; 38 _fp = NULL; 39 _cb = NULL; 40 _deopt_state = unknown; 41 } 42 43 inline frame::frame(intptr_t* sp, intptr_t* fp, address pc) { 44 _sp = sp; 45 _unextended_sp = sp; 46 _fp = fp; 47 _pc = pc; 48 assert(pc != NULL, "no pc?"); 49 _cb = CodeCache::find_blob(pc); 50 adjust_unextended_sp(); 51 52 address original_pc = nmethod::get_deopt_original_pc(this); 53 if (original_pc != NULL) { 54 _pc = original_pc; 55 _deopt_state = is_deoptimized; 56 } else { 57 _deopt_state = not_deoptimized; 58 } 59 } 60 61 inline frame::frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc) { 62 _sp = sp; 63 _unextended_sp = unextended_sp; 64 _fp = fp; 65 _pc = pc; 66 assert(pc != NULL, "no pc?"); 67 _cb = CodeCache::find_blob(pc); 68 adjust_unextended_sp(); 69 70 address original_pc = nmethod::get_deopt_original_pc(this); 71 if (original_pc != NULL) { 72 _pc = original_pc; 73 assert(((nmethod*)_cb)->insts_contains(_pc), "original PC must be in nmethod"); 74 _deopt_state = is_deoptimized; 75 } else { 76 _deopt_state = not_deoptimized; 77 } 78 } 79 80 inline frame::frame(intptr_t* sp, intptr_t* fp) { 81 _sp = sp; 82 _unextended_sp = sp; 83 _fp = fp; 84 _pc = (address)(sp[-1]); 85 86 // Here's a sticky one. This constructor can be called via AsyncGetCallTrace 87 // when last_Java_sp is non-null but the pc fetched is junk. If we are truly 88 // unlucky the junk value could be to a zombied method and we'll die on the 89 // find_blob call. This is also why we can have no asserts on the validity 90 // of the pc we find here. AsyncGetCallTrace -> pd_get_top_frame_for_signal_handler 91 // -> pd_last_frame should use a specialized version of pd_last_frame which could 92 // call a specilaized frame constructor instead of this one. 93 // Then we could use the assert below. However this assert is of somewhat dubious 94 // value. 95 // assert(_pc != NULL, "no pc?"); 96 97 _cb = CodeCache::find_blob(_pc); 98 adjust_unextended_sp(); 99 100 address original_pc = nmethod::get_deopt_original_pc(this); 101 if (original_pc != NULL) { 102 _pc = original_pc; 103 _deopt_state = is_deoptimized; 104 } else { 105 _deopt_state = not_deoptimized; 106 } 107 } 108 109 // Accessors 110 111 inline bool frame::equal(frame other) const { 112 bool ret = sp() == other.sp() 113 && unextended_sp() == other.unextended_sp() 114 && fp() == other.fp() 115 && pc() == other.pc(); 116 assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction"); 117 return ret; 118 } 119 120 // Return unique id for this frame. The id must have a value where we can distinguish 121 // identity and younger/older relationship. NULL represents an invalid (incomparable) 122 // frame. 123 inline intptr_t* frame::id(void) const { return unextended_sp(); } 124 125 // Relationals on frames based 126 // Return true if the frame is younger (more recent activation) than the frame represented by id 127 inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id"); 128 return this->id() < id ; } 129 130 // Return true if the frame is older (less recent activation) than the frame represented by id 131 inline bool frame::is_older(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id"); 132 return this->id() > id ; } 133 134 135 136 inline intptr_t* frame::link() const { return (intptr_t*) *(intptr_t **)addr_at(link_offset); } 137 inline void frame::set_link(intptr_t* addr) { *(intptr_t **)addr_at(link_offset) = addr; } 138 139 140 inline intptr_t* frame::unextended_sp() const { return _unextended_sp; } 141 142 // Return address: 143 144 inline address* frame::sender_pc_addr() const { return (address*) addr_at( return_addr_offset); } 145 inline address frame::sender_pc() const { return *sender_pc_addr(); } 146 147 // return address of param, zero origin index. 148 inline address* frame::native_param_addr(int idx) const { return (address*) addr_at( native_frame_initial_param_offset+idx); } 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_bcx_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_mdx_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_bcx_addr() const { 214 return (intptr_t*)addr_at(interpreter_frame_bcx_offset); 215 } 216 217 218 inline intptr_t* frame::interpreter_frame_mdx_addr() const { 219 return (intptr_t*)addr_at(interpreter_frame_mdx_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