1 /*
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   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
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  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).
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  20  * or visit www.oracle.com if you need additional information or have any
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  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
--- EOF ---