--- a/hotspot/src/share/vm/code/nmethod.hpp Fri Jan 29 22:51:41 2010 -0800
+++ b/hotspot/src/share/vm/code/nmethod.hpp Mon Feb 01 19:29:46 2010 +0100
@@ -1,5 +1,5 @@
/*
- * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved.
+ * Copyright 1997-2010 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -148,8 +148,12 @@
// Offsets for different nmethod parts
int _exception_offset;
- // All deoptee's will resume execution at this location described by this offset
+ // All deoptee's will resume execution at this location described by
+ // this offset.
int _deoptimize_offset;
+ // All deoptee's at a MethodHandle call site will resume execution
+ // at this location described by this offset.
+ int _deoptimize_mh_offset;
#ifdef HAVE_DTRACE_H
int _trap_offset;
#endif // def HAVE_DTRACE_H
@@ -332,24 +336,25 @@
bool is_compiled_by_c2() const;
// boundaries for different parts
- address code_begin () const { return _entry_point; }
- address code_end () const { return header_begin() + _stub_offset ; }
- address exception_begin () const { return header_begin() + _exception_offset ; }
- address deopt_handler_begin() const { return header_begin() + _deoptimize_offset ; }
- address stub_begin () const { return header_begin() + _stub_offset ; }
- address stub_end () const { return header_begin() + _consts_offset ; }
- address consts_begin () const { return header_begin() + _consts_offset ; }
- address consts_end () const { return header_begin() + _scopes_data_offset ; }
- address scopes_data_begin () const { return header_begin() + _scopes_data_offset ; }
- address scopes_data_end () const { return header_begin() + _scopes_pcs_offset ; }
- PcDesc* scopes_pcs_begin () const { return (PcDesc*)(header_begin() + _scopes_pcs_offset ); }
- PcDesc* scopes_pcs_end () const { return (PcDesc*)(header_begin() + _dependencies_offset); }
- address dependencies_begin () const { return header_begin() + _dependencies_offset ; }
- address dependencies_end () const { return header_begin() + _handler_table_offset ; }
- address handler_table_begin() const { return header_begin() + _handler_table_offset ; }
- address handler_table_end () const { return header_begin() + _nul_chk_table_offset ; }
- address nul_chk_table_begin() const { return header_begin() + _nul_chk_table_offset ; }
- address nul_chk_table_end () const { return header_begin() + _nmethod_end_offset ; }
+ address code_begin () const { return _entry_point; }
+ address code_end () const { return header_begin() + _stub_offset ; }
+ address exception_begin () const { return header_begin() + _exception_offset ; }
+ address deopt_handler_begin () const { return header_begin() + _deoptimize_offset ; }
+ address deopt_mh_handler_begin() const { return header_begin() + _deoptimize_mh_offset ; }
+ address stub_begin () const { return header_begin() + _stub_offset ; }
+ address stub_end () const { return header_begin() + _consts_offset ; }
+ address consts_begin () const { return header_begin() + _consts_offset ; }
+ address consts_end () const { return header_begin() + _scopes_data_offset ; }
+ address scopes_data_begin () const { return header_begin() + _scopes_data_offset ; }
+ address scopes_data_end () const { return header_begin() + _scopes_pcs_offset ; }
+ PcDesc* scopes_pcs_begin () const { return (PcDesc*)(header_begin() + _scopes_pcs_offset ); }
+ PcDesc* scopes_pcs_end () const { return (PcDesc*)(header_begin() + _dependencies_offset) ; }
+ address dependencies_begin () const { return header_begin() + _dependencies_offset ; }
+ address dependencies_end () const { return header_begin() + _handler_table_offset ; }
+ address handler_table_begin () const { return header_begin() + _handler_table_offset ; }
+ address handler_table_end () const { return header_begin() + _nul_chk_table_offset ; }
+ address nul_chk_table_begin () const { return header_begin() + _nul_chk_table_offset ; }
+ address nul_chk_table_end () const { return header_begin() + _nmethod_end_offset ; }
int code_size () const { return code_end () - code_begin (); }
int stub_size () const { return stub_end () - stub_begin (); }
@@ -524,7 +529,7 @@
private:
ScopeDesc* scope_desc_in(address begin, address end);
- address* orig_pc_addr(const frame* fr ) { return (address*) ((address)fr->unextended_sp() + _orig_pc_offset); }
+ address* orig_pc_addr(const frame* fr) { return (address*) ((address)fr->unextended_sp() + _orig_pc_offset); }
PcDesc* find_pc_desc_internal(address pc, bool approximate);
@@ -547,13 +552,17 @@
void copy_scopes_pcs(PcDesc* pcs, int count);
void copy_scopes_data(address buffer, int size);
- // deopt
- // return true is the pc is one would expect if the frame is being deopted.
- bool is_deopt_pc(address pc);
+ // Deopt
+ // Return true is the PC is one would expect if the frame is being deopted.
+ bool is_deopt_pc (address pc) { return is_deopt_entry(pc) || is_deopt_mh_entry(pc); }
+ bool is_deopt_entry (address pc) { return pc == deopt_handler_begin(); }
+ bool is_deopt_mh_entry(address pc) { return pc == deopt_mh_handler_begin(); }
// Accessor/mutator for the original pc of a frame before a frame was deopted.
address get_original_pc(const frame* fr) { return *orig_pc_addr(fr); }
void set_original_pc(const frame* fr, address pc) { *orig_pc_addr(fr) = pc; }
+ static address get_deopt_original_pc(const frame* fr);
+
// MethodHandle
bool is_method_handle_return(address return_pc);