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comparison src/share/vm/code/nmethod.hpp @ 1200:ba263cfb7611

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6917766: JSR 292 needs its own deopt handler Summary: We need to introduce a new MH deopt handler so we can easily determine if the deopt happened at a MH call site or not. Reviewed-by: never, jrose
author twisti
date Fri, 29 Jan 2010 12:13:05 +0100
parents 4e6abf09f540
children 24128c2ffa87
comparison
equal deleted inserted replaced
1199:0e14bd797dad 1200:ba263cfb7611
1 /* 1 /*
2 * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved. 2 * Copyright 1997-2010 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
143 143
144 AbstractCompiler* _compiler; // The compiler which compiled this nmethod 144 AbstractCompiler* _compiler; // The compiler which compiled this nmethod
145 145
146 // Offsets for different nmethod parts 146 // Offsets for different nmethod parts
147 int _exception_offset; 147 int _exception_offset;
148 // All deoptee's will resume execution at this location described by this offset 148 // All deoptee's will resume execution at this location described by
149 // this offset.
149 int _deoptimize_offset; 150 int _deoptimize_offset;
151 // All deoptee's at a MethodHandle call site will resume execution
152 // at this location described by this offset.
153 int _deoptimize_mh_offset;
150 #ifdef HAVE_DTRACE_H 154 #ifdef HAVE_DTRACE_H
151 int _trap_offset; 155 int _trap_offset;
152 #endif // def HAVE_DTRACE_H 156 #endif // def HAVE_DTRACE_H
153 int _stub_offset; 157 int _stub_offset;
154 int _consts_offset; 158 int _consts_offset;
327 331
328 bool is_compiled_by_c1() const; 332 bool is_compiled_by_c1() const;
329 bool is_compiled_by_c2() const; 333 bool is_compiled_by_c2() const;
330 334
331 // boundaries for different parts 335 // boundaries for different parts
332 address code_begin () const { return _entry_point; } 336 address code_begin () const { return _entry_point; }
333 address code_end () const { return header_begin() + _stub_offset ; } 337 address code_end () const { return header_begin() + _stub_offset ; }
334 address exception_begin () const { return header_begin() + _exception_offset ; } 338 address exception_begin () const { return header_begin() + _exception_offset ; }
335 address deopt_handler_begin() const { return header_begin() + _deoptimize_offset ; } 339 address deopt_handler_begin () const { return header_begin() + _deoptimize_offset ; }
336 address stub_begin () const { return header_begin() + _stub_offset ; } 340 address deopt_mh_handler_begin() const { return header_begin() + _deoptimize_mh_offset ; }
337 address stub_end () const { return header_begin() + _consts_offset ; } 341 address stub_begin () const { return header_begin() + _stub_offset ; }
338 address consts_begin () const { return header_begin() + _consts_offset ; } 342 address stub_end () const { return header_begin() + _consts_offset ; }
339 address consts_end () const { return header_begin() + _scopes_data_offset ; } 343 address consts_begin () const { return header_begin() + _consts_offset ; }
340 address scopes_data_begin () const { return header_begin() + _scopes_data_offset ; } 344 address consts_end () const { return header_begin() + _scopes_data_offset ; }
341 address scopes_data_end () const { return header_begin() + _scopes_pcs_offset ; } 345 address scopes_data_begin () const { return header_begin() + _scopes_data_offset ; }
342 PcDesc* scopes_pcs_begin () const { return (PcDesc*)(header_begin() + _scopes_pcs_offset ); } 346 address scopes_data_end () const { return header_begin() + _scopes_pcs_offset ; }
343 PcDesc* scopes_pcs_end () const { return (PcDesc*)(header_begin() + _dependencies_offset); } 347 PcDesc* scopes_pcs_begin () const { return (PcDesc*)(header_begin() + _scopes_pcs_offset ); }
344 address dependencies_begin () const { return header_begin() + _dependencies_offset ; } 348 PcDesc* scopes_pcs_end () const { return (PcDesc*)(header_begin() + _dependencies_offset) ; }
345 address dependencies_end () const { return header_begin() + _handler_table_offset ; } 349 address dependencies_begin () const { return header_begin() + _dependencies_offset ; }
346 address handler_table_begin() const { return header_begin() + _handler_table_offset ; } 350 address dependencies_end () const { return header_begin() + _handler_table_offset ; }
347 address handler_table_end () const { return header_begin() + _nul_chk_table_offset ; } 351 address handler_table_begin () const { return header_begin() + _handler_table_offset ; }
348 address nul_chk_table_begin() const { return header_begin() + _nul_chk_table_offset ; } 352 address handler_table_end () const { return header_begin() + _nul_chk_table_offset ; }
349 address nul_chk_table_end () const { return header_begin() + _nmethod_end_offset ; } 353 address nul_chk_table_begin () const { return header_begin() + _nul_chk_table_offset ; }
354 address nul_chk_table_end () const { return header_begin() + _nmethod_end_offset ; }
350 355
351 int code_size () const { return code_end () - code_begin (); } 356 int code_size () const { return code_end () - code_begin (); }
352 int stub_size () const { return stub_end () - stub_begin (); } 357 int stub_size () const { return stub_end () - stub_begin (); }
353 int consts_size () const { return consts_end () - consts_begin (); } 358 int consts_size () const { return consts_end () - consts_begin (); }
354 int scopes_data_size () const { return scopes_data_end () - scopes_data_begin (); } 359 int scopes_data_size () const { return scopes_data_end () - scopes_data_begin (); }
513 ScopeDesc* scope_desc_at(address pc); 518 ScopeDesc* scope_desc_at(address pc);
514 519
515 private: 520 private:
516 ScopeDesc* scope_desc_in(address begin, address end); 521 ScopeDesc* scope_desc_in(address begin, address end);
517 522
518 address* orig_pc_addr(const frame* fr ) { return (address*) ((address)fr->unextended_sp() + _orig_pc_offset); } 523 address* orig_pc_addr(const frame* fr) { return (address*) ((address)fr->unextended_sp() + _orig_pc_offset); }
519 524
520 PcDesc* find_pc_desc_internal(address pc, bool approximate); 525 PcDesc* find_pc_desc_internal(address pc, bool approximate);
521 526
522 PcDesc* find_pc_desc(address pc, bool approximate) { 527 PcDesc* find_pc_desc(address pc, bool approximate) {
523 PcDesc* desc = _pc_desc_cache.last_pc_desc(); 528 PcDesc* desc = _pc_desc_cache.last_pc_desc();
536 public: 541 public:
537 // copying of debugging information 542 // copying of debugging information
538 void copy_scopes_pcs(PcDesc* pcs, int count); 543 void copy_scopes_pcs(PcDesc* pcs, int count);
539 void copy_scopes_data(address buffer, int size); 544 void copy_scopes_data(address buffer, int size);
540 545
541 // deopt 546 // Deopt
542 // return true is the pc is one would expect if the frame is being deopted. 547 // Return true is the PC is one would expect if the frame is being deopted.
543 bool is_deopt_pc(address pc); 548 bool is_deopt_pc (address pc) { return is_deopt_entry(pc) || is_deopt_mh_entry(pc); }
549 bool is_deopt_entry (address pc) { return pc == deopt_handler_begin(); }
550 bool is_deopt_mh_entry(address pc) { return pc == deopt_mh_handler_begin(); }
544 // Accessor/mutator for the original pc of a frame before a frame was deopted. 551 // Accessor/mutator for the original pc of a frame before a frame was deopted.
545 address get_original_pc(const frame* fr) { return *orig_pc_addr(fr); } 552 address get_original_pc(const frame* fr) { return *orig_pc_addr(fr); }
546 void set_original_pc(const frame* fr, address pc) { *orig_pc_addr(fr) = pc; } 553 void set_original_pc(const frame* fr, address pc) { *orig_pc_addr(fr) = pc; }
554
555 static address get_deopt_original_pc(const frame* fr);
547 556
548 // MethodHandle 557 // MethodHandle
549 bool is_method_handle_return(address return_pc); 558 bool is_method_handle_return(address return_pc);
550 559
551 // jvmti support: 560 // jvmti support: