jdk8-mips64-public/hotspot: src/share/vm/c1/c1_FrameMap.hpp@f90c822e73f8 (annotated)

src/share/vm/c1/c1_FrameMap.hpp@f90c822e73f8 (annotated)

src/share/vm/c1/c1_FrameMap.hpp

Wed, 27 Apr 2016 01:25:04 +0800

author: aoqi
date: Wed, 27 Apr 2016 01:25:04 +0800
changeset 0: f90c822e73f8
child 1: 2d8a650513c2
permissions: -rw-r--r--

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http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17

 /*
  * Copyright (c) 2000, 2013, Oracle and/or its affiliates. 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
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #ifndef SHARE_VM_C1_C1_FRAMEMAP_HPP
 #define SHARE_VM_C1_C1_FRAMEMAP_HPP
 #include "asm/assembler.hpp"
 #include "c1/c1_Defs.hpp"
 #include "c1/c1_LIR.hpp"
 #include "code/vmreg.hpp"
 #include "memory/allocation.hpp"
 #include "runtime/frame.hpp"
 #include "runtime/synchronizer.hpp"
 #include "utilities/globalDefinitions.hpp"
 class ciMethod;
 class CallingConvention;
 class BasicTypeArray;
 class BasicTypeList;
 //--------------------------------------------------------
 //               FrameMap
 //--------------------------------------------------------
 //  This class is responsible of mapping items (locals, monitors, spill
 //  slots and registers to their frame location
 //
 //  The monitors are specified by a consecutive index, although each monitor entry
 //  occupies two words. The monitor_index is 0.._num_monitors
 //  The spill index is similar to local index; it is in range 0..(open)
 //
 //  The CPU registers are mapped using a fixed table; register with number 0
 //  is the most used one.
 //   stack grow direction -->                                        SP
 //  +----------+---+----------+-------+------------------------+-----+
 //  |arguments | x | monitors | spill | reserved argument area | ABI |
 //  +----------+---+----------+-------+------------------------+-----+
 //
 //  x =  ABI area (SPARC) or  return adress and link (i486)
 //  ABI  = ABI area (SPARC) or nothing (i486)
 class LIR_OprDesc;
 typedef LIR_OprDesc* LIR_Opr;
 class FrameMap : public CompilationResourceObj {
  public:
   enum {
     nof_cpu_regs = pd_nof_cpu_regs_frame_map,
     nof_fpu_regs = pd_nof_fpu_regs_frame_map,
     nof_cpu_regs_reg_alloc = pd_nof_cpu_regs_reg_alloc,
     nof_fpu_regs_reg_alloc = pd_nof_fpu_regs_reg_alloc,
     max_nof_caller_save_cpu_regs = pd_nof_caller_save_cpu_regs_frame_map,
     nof_caller_save_fpu_regs     = pd_nof_caller_save_fpu_regs_frame_map,
     spill_slot_size_in_bytes = 4
   };
 #ifdef TARGET_ARCH_x86
 # include "c1_FrameMap_x86.hpp"
 #endif
 #ifdef TARGET_ARCH_sparc
 # include "c1_FrameMap_sparc.hpp"
 #endif
 #ifdef TARGET_ARCH_arm
 # include "c1_FrameMap_arm.hpp"
 #endif
 #ifdef TARGET_ARCH_ppc
 # include "c1_FrameMap_ppc.hpp"
 #endif
   friend class LIR_OprDesc;
  private:
   static bool         _init_done;
   static Register     _cpu_rnr2reg [nof_cpu_regs];
   static int          _cpu_reg2rnr [nof_cpu_regs];
   static LIR_Opr      _caller_save_cpu_regs [max_nof_caller_save_cpu_regs];
   static LIR_Opr      _caller_save_fpu_regs [nof_caller_save_fpu_regs];
   int                 _framesize;
   int                 _argcount;
   int                 _num_monitors;
   int                 _num_spills;
   int                 _reserved_argument_area_size;
   int                 _oop_map_arg_count;
   CallingConvention*  _incoming_arguments;
   intArray*           _argument_locations;
   void check_spill_index   (int spill_index)   const { assert(spill_index   >= 0, "bad index"); }
   void check_monitor_index (int monitor_index) const { assert(monitor_index >= 0 &&
                                                               monitor_index < _num_monitors, "bad index"); }
   static Register cpu_rnr2reg (int rnr) {
     assert(_init_done, "tables not initialized");
     debug_only(cpu_range_check(rnr);)
     return _cpu_rnr2reg[rnr];
   }
   static int cpu_reg2rnr (Register reg) {
     assert(_init_done, "tables not initialized");
     debug_only(cpu_range_check(reg->encoding());)
     return _cpu_reg2rnr[reg->encoding()];
   }
   static void map_register(int rnr, Register reg) {
     debug_only(cpu_range_check(rnr);)
     debug_only(cpu_range_check(reg->encoding());)
     _cpu_rnr2reg[rnr] = reg;
     _cpu_reg2rnr[reg->encoding()] = rnr;
   }
   void update_reserved_argument_area_size (int size) {
     assert(size >= 0, "check");
     _reserved_argument_area_size = MAX2(_reserved_argument_area_size, size);
   }
  protected:
 #ifndef PRODUCT
   static void cpu_range_check (int rnr)          { assert(0 <= rnr && rnr < nof_cpu_regs, "cpu register number is too big"); }
   static void fpu_range_check (int rnr)          { assert(0 <= rnr && rnr < nof_fpu_regs, "fpu register number is too big"); }
 #endif
   ByteSize sp_offset_for_monitor_base(const int idx) const;
   Address make_new_address(ByteSize sp_offset) const;
   ByteSize sp_offset_for_slot(const int idx) const;
   ByteSize sp_offset_for_double_slot(const int idx) const;
   ByteSize sp_offset_for_spill(const int idx) const;
   ByteSize sp_offset_for_monitor_lock(int monitor_index) const;
   ByteSize sp_offset_for_monitor_object(int monitor_index) const;
   VMReg sp_offset2vmreg(ByteSize offset) const;
   // platform dependent hook used to check that frame is properly
   // addressable on the platform.  Used by sparc to verify that all
   // stack addresses are expressable in a simm13.
   bool validate_frame();
   static LIR_Opr map_to_opr(BasicType type, VMRegPair* reg, bool incoming);
  public:
   // Opr representing the stack_pointer on this platform
   static LIR_Opr stack_pointer();
   // JSR 292
   static LIR_Opr method_handle_invoke_SP_save_opr();
   static BasicTypeArray*     signature_type_array_for(const ciMethod* method);
   // for outgoing calls, these also update the reserved area to
   // include space for arguments and any ABI area.
   CallingConvention* c_calling_convention(const BasicTypeArray* signature);
   CallingConvention* java_calling_convention(const BasicTypeArray* signature, bool outgoing);
   // deopt support
   ByteSize sp_offset_for_orig_pc() { return sp_offset_for_monitor_base(_num_monitors); }
   static LIR_Opr as_opr(Register r) {
     return LIR_OprFact::single_cpu(cpu_reg2rnr(r));
   }
   static LIR_Opr as_oop_opr(Register r) {
     return LIR_OprFact::single_cpu_oop(cpu_reg2rnr(r));
   }
   static LIR_Opr as_metadata_opr(Register r) {
     return LIR_OprFact::single_cpu_metadata(cpu_reg2rnr(r));
   }
   FrameMap(ciMethod* method, int monitors, int reserved_argument_area_size);
   bool finalize_frame(int nof_slots);
   int   reserved_argument_area_size () const     { return _reserved_argument_area_size; }
   int   framesize                   () const     { assert(_framesize != -1, "hasn't been calculated"); return _framesize; }
   ByteSize framesize_in_bytes       () const     { return in_ByteSize(framesize() * 4); }
   int   num_monitors                () const     { return _num_monitors; }
   int   num_spills                  () const     { assert(_num_spills >= 0, "not set"); return _num_spills; }
   int   argcount              () const     { assert(_argcount >= 0, "not set"); return _argcount; }
   int oop_map_arg_count() const { return _oop_map_arg_count; }
   CallingConvention* incoming_arguments() const  { return _incoming_arguments; }
   // convenience routines
   Address address_for_slot(int index, int sp_adjust = 0) const {
     return make_new_address(sp_offset_for_slot(index) + in_ByteSize(sp_adjust));
   }
   Address address_for_double_slot(int index, int sp_adjust = 0) const {
     return make_new_address(sp_offset_for_double_slot(index) + in_ByteSize(sp_adjust));
   }
   Address address_for_monitor_lock(int monitor_index) const {
     return make_new_address(sp_offset_for_monitor_lock(monitor_index));
   }
   Address address_for_monitor_object(int monitor_index) const {
     return make_new_address(sp_offset_for_monitor_object(monitor_index));
   }
   // Creates Location describing desired slot and returns it via pointer
   // to Location object. Returns true if the stack frame offset was legal
   // (as defined by Location::legal_offset_in_bytes()), false otherwise.
   // Do not use the returned location if this returns false.
   bool location_for_sp_offset(ByteSize byte_offset_from_sp,
                               Location::Type loc_type, Location* loc) const;
   bool location_for_monitor_lock  (int monitor_index, Location* loc) const {
     return location_for_sp_offset(sp_offset_for_monitor_lock(monitor_index), Location::normal, loc);
   }
   bool location_for_monitor_object(int monitor_index, Location* loc) const {
     return location_for_sp_offset(sp_offset_for_monitor_object(monitor_index), Location::oop, loc);
   }
   bool locations_for_slot  (int index, Location::Type loc_type,
                             Location* loc, Location* second = NULL) const;
   VMReg slot_regname(int index) const {
     return sp_offset2vmreg(sp_offset_for_slot(index));
   }
   VMReg monitor_object_regname(int monitor_index) const {
     return sp_offset2vmreg(sp_offset_for_monitor_object(monitor_index));
   }
   VMReg regname(LIR_Opr opr) const;
   static LIR_Opr caller_save_cpu_reg_at(int i) {
     assert(i >= 0 && i < max_nof_caller_save_cpu_regs, "out of bounds");
     return _caller_save_cpu_regs[i];
   }
   static LIR_Opr caller_save_fpu_reg_at(int i) {
     assert(i >= 0 && i < nof_caller_save_fpu_regs, "out of bounds");
     return _caller_save_fpu_regs[i];
   }
   static void initialize();
 };
 //               CallingConvention
 //--------------------------------------------------------
 class CallingConvention: public ResourceObj {
  private:
   LIR_OprList* _args;
   int          _reserved_stack_slots;
  public:
   CallingConvention (LIR_OprList* args, int reserved_stack_slots)
     : _args(args)
     , _reserved_stack_slots(reserved_stack_slots)  {}
   LIR_OprList* args()       { return _args; }
   LIR_Opr at(int i) const   { return _args->at(i); }
   int length() const        { return _args->length(); }
   // Indicates number of real frame slots used by arguments passed on stack.
   int reserved_stack_slots() const            { return _reserved_stack_slots; }
 #ifndef PRODUCT
   void print () const {
     for (int i = 0; i < length(); i++) {
       at(i)->print();
     }
   }
 #endif // PRODUCT
 };
 #endif // SHARE_VM_C1_C1_FRAMEMAP_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/c1/c1_FrameMap.hpp@f90c822e73f8 (annotated)

src/share/vm/c1/c1_FrameMap.hpp