Quelle frame_ppc.hpp Sprache: C

/*
* Copyright (c) 2000, 2022, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2012, 2021 SAP SE. 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 CPU_PPC_FRAME_PPC_HPP
#define CPU_PPC_FRAME_PPC_HPP

  //  C frame layout on PPC-64.
  //
  //  In this figure the stack grows upwards, while memory grows
  //  downwards. See "64-bit PowerPC ELF ABI Supplement Version 1.7",
  //  IBM Corp. (2003-10-29)
  //  (http://math-atlas.sourceforge.net/devel/assembly/PPC-elf64abi-1.7.pdf).
  //
  //  Square brackets denote stack regions possibly larger
  //  than a single 64 bit slot.
  //
  //  STACK:
  //    0       [C_FRAME]               <-- SP after prolog (mod 16 = 0)
  //            [C_FRAME]               <-- SP before prolog
  //            ...
  //            [C_FRAME]
  //
  //  C_FRAME:
  //    0       [ABI_REG_ARGS]
  //    112     CARG_9: outgoing arg 9 (arg_1 ... arg_8 via gpr_3 ... gpr_{10})
  //            ...
  //    40+M*8  CARG_M: outgoing arg M (M is the maximum of outgoing args taken over all call sites in the procedure)
  //            local 1
  //            ...
  //            local N
  //            spill slot for vector reg (16 bytes aligned)
  //            ...
  //            spill slot for vector reg
  //            alignment       (4 or 12 bytes)
  //    V       SR_VRSAVE
  //    V+4     spill slot for GR
  //    ...     ...
  //            spill slot for GR
  //            spill slot for FR
  //            ...
  //            spill slot for FR
  //
  //  ABI_48:
  //    0       caller's SP
  //    8       space for condition register (CR) for next call
  //    16      space for link register (LR) for next call
  //    24      reserved
  //    32      reserved
  //    40      space for TOC (=R2) register for next call
  //
  //  ABI_REG_ARGS:
  //    0       [ABI_48]
  //    48      CARG_1: spill slot for outgoing arg 1. used by next callee.
  //    ...     ...
  //    104     CARG_8: spill slot for outgoing arg 8. used by next callee.
  //

public:

  // C frame layout
  static const int alignment_in_bytes = 16;

  // ABI_MINFRAME:
  struct abi_minframe {
    uint64_t callers_sp;
    uint64_t cr;                                  //_16
    uint64_t lr;
#if !defined(ABI_ELFv2)
    uint64_t reserved1;                           //_16
    uint64_t reserved2;
#endif
    uint64_t toc;                                 //_16
    // nothing to add here!
    // aligned to frame::alignment_in_bytes (16)
  };

  enum {
    abi_minframe_size = sizeof(abi_minframe)
  };

  struct abi_reg_args : abi_minframe {
    uint64_t carg_1;
    uint64_t carg_2;                              //_16
    uint64_t carg_3;
    uint64_t carg_4;                              //_16
    uint64_t carg_5;
    uint64_t carg_6;                              //_16
    uint64_t carg_7;
    uint64_t carg_8;                              //_16
    // aligned to frame::alignment_in_bytes (16)
  };

  enum {
    abi_reg_args_size = sizeof(abi_reg_args)
  };

  #define _abi0(_component) \
          (offset_of(frame::abi_reg_args, _component))

  struct abi_reg_args_spill : abi_reg_args {
    // additional spill slots
    uint64_t spill_ret;
    uint64_t spill_fret;                          //_16
    // aligned to frame::alignment_in_bytes (16)
  };

  enum {
    abi_reg_args_spill_size = sizeof(abi_reg_args_spill)
  };

  #define _abi_reg_args_spill(_component) \
          (offset_of(frame::abi_reg_args_spill, _component))

  // non-volatile GPRs:

  struct spill_nonvolatiles {
    uint64_t r14;
    uint64_t r15;                                 //_16
    uint64_t r16;
    uint64_t r17;                                 //_16
    uint64_t r18;
    uint64_t r19;                                 //_16
    uint64_t r20;
    uint64_t r21;                                 //_16
    uint64_t r22;
    uint64_t r23;                                 //_16
    uint64_t r24;
    uint64_t r25;                                 //_16
    uint64_t r26;
    uint64_t r27;                                 //_16
    uint64_t r28;
    uint64_t r29;                                 //_16
    uint64_t r30;
    uint64_t r31;                                 //_16

    double f14;
    double f15;
    double f16;
    double f17;
    double f18;
    double f19;
    double f20;
    double f21;
    double f22;
    double f23;
    double f24;
    double f25;
    double f26;
    double f27;
    double f28;
    double f29;
    double f30;
    double f31;

    // aligned to frame::alignment_in_bytes (16)
  };

  enum {
    spill_nonvolatiles_size = sizeof(spill_nonvolatiles)
  };

  #define _spill_nonvolatiles_neg(_component) \
     (int)(-frame::spill_nonvolatiles_size + offset_of(frame::spill_nonvolatiles, _component))

  // Frame layout for the Java template interpreter on PPC64.
  //
  // In these figures the stack grows upwards, while memory grows
  // downwards. Square brackets denote regions possibly larger than
  // single 64 bit slots.
  //
  //  STACK (interpreter is active):
  //    0       [TOP_IJAVA_FRAME]
  //            [PARENT_IJAVA_FRAME]
  //            ...
  //            [PARENT_IJAVA_FRAME]
  //            [ENTRY_FRAME]
  //            [C_FRAME]
  //            ...
  //            [C_FRAME]
  //
  //  With the following frame layouts:
  //  TOP_IJAVA_FRAME:
  //    0       [TOP_IJAVA_FRAME_ABI]
  //            alignment (optional)
  //            [operand stack]
  //            [monitors] (optional)
  //            [IJAVA_STATE]
  //            note: own locals are located in the caller frame.
  //
  //  PARENT_IJAVA_FRAME:
  //    0       [PARENT_IJAVA_FRAME_ABI]
  //            alignment (optional)
  //            [callee's Java result]
  //            [callee's locals w/o arguments]
  //            [outgoing arguments]
  //            [used part of operand stack w/o arguments]
  //            [monitors] (optional)
  //            [IJAVA_STATE]
  //
  //  ENTRY_FRAME:
  //    0       [PARENT_IJAVA_FRAME_ABI]
  //            alignment (optional)
  //            [callee's Java result]
  //            [callee's locals w/o arguments]
  //            [outgoing arguments]
  //            [ENTRY_FRAME_LOCALS]

  struct parent_ijava_frame_abi : abi_minframe {
  };

  enum {
    parent_ijava_frame_abi_size = sizeof(parent_ijava_frame_abi)
  };

#define _parent_ijava_frame_abi(_component) \
        (offset_of(frame::parent_ijava_frame_abi, _component))

  struct top_ijava_frame_abi : abi_reg_args {
  };

  enum {
    top_ijava_frame_abi_size = sizeof(top_ijava_frame_abi)
  };

#define _top_ijava_frame_abi(_component) \
        (offset_of(frame::top_ijava_frame_abi, _component))

  struct ijava_state {
    uint64_t method;
    uint64_t mirror;
    uint64_t locals;
    uint64_t monitors;
    uint64_t cpoolCache;
    uint64_t bcp;
    uint64_t esp;
    uint64_t mdx;
    uint64_t top_frame_sp; // Maybe define parent_frame_abi and move there.
    uint64_t sender_sp;
    // Slots only needed for native calls. Maybe better to move elsewhere.
    uint64_t oop_tmp;
    uint64_t lresult;
    uint64_t fresult;
  };

  enum {
    ijava_state_size = sizeof(ijava_state)
  };

// Byte offset relative to fp
#define _ijava_state_neg(_component) \
        (int) (-frame::ijava_state_size + offset_of(frame::ijava_state, _component))

// Frame slot index relative to fp
#define ijava_idx(_component) \
        (_ijava_state_neg(_component) >> LogBytesPerWord)

  // ENTRY_FRAME

  struct entry_frame_locals {
    uint64_t call_wrapper_address;
    uint64_t result_address;                      //_16
    uint64_t result_type;
    uint64_t arguments_tos_address;               //_16
    // aligned to frame::alignment_in_bytes (16)
    uint64_t r[spill_nonvolatiles_size/sizeof(uint64_t)];
  };

  enum {
    entry_frame_locals_size = sizeof(entry_frame_locals)
  };

  #define _entry_frame_locals_neg(_component) \
    (int)(-frame::entry_frame_locals_size + offset_of(frame::entry_frame_locals, _component))

  //  Frame layout for JIT generated methods
  //
  //  In these figures the stack grows upwards, while memory grows
  //  downwards. Square brackets denote regions possibly larger than single
  //  64 bit slots.
  //
  //  STACK (interpreted Java calls JIT generated Java):
  //          [JIT_FRAME]                                <-- SP (mod 16 = 0)
  //          [TOP_IJAVA_FRAME]
  //         ...
  //
  //  JIT_FRAME (is a C frame according to PPC-64 ABI):
  //          [out_preserve]
  //          [out_args]
  //          [spills]
  //          [pad_1]
  //          [monitor] (optional)
  //       ...
  //          [monitor] (optional)
  //          [pad_2]
  //          [in_preserve] added / removed by prolog / epilog
  //

  // JIT_ABI (TOP and PARENT)

  struct jit_abi {
    uint64_t callers_sp;
    uint64_t cr;
    uint64_t lr;
    uint64_t toc;
    // Nothing to add here!
    // NOT ALIGNED to frame::alignment_in_bytes (16).
  };

  struct jit_out_preserve : jit_abi {
    // Nothing to add here!
  };

  struct jit_in_preserve {
    // Nothing to add here!
  };

  enum {
    jit_out_preserve_size = sizeof(jit_out_preserve),
    jit_in_preserve_size  = sizeof(jit_in_preserve)
  };

  struct jit_monitor {
    uint64_t monitor[1];
  };

  enum {
    jit_monitor_size = sizeof(jit_monitor),
  };

private:

  //  STACK:
  //            ...
  //            [THIS_FRAME]             <-- this._sp (stack pointer for this frame)
  //            [CALLER_FRAME]           <-- this.fp() (_sp of caller's frame)
  //            ...
  //

  // The frame's stack pointer before it has been extended by a c2i adapter;
  // needed by deoptimization
  union {
    intptr_t* _unextended_sp;
    int _offset_unextended_sp; // for use in stack-chunk frames
  };

  union {
    intptr_t* _fp;  // frame pointer
    int _offset_fp; // relative frame pointer for use in stack-chunk frames
  };

public:

  // Accessors for fields
  intptr_t* fp() const { assert_absolute(); return _fp; }
  void set_fp(intptr_t* newfp)  { _fp = newfp; }
  int offset_fp() const         { assert_offset();  return _offset_fp; }
  void set_offset_fp(int value) { assert_on_heap(); _offset_fp = value; }

  // Accessors for ABIs
  inline abi_minframe* own_abi()     const { return (abi_minframe*) _sp; }
  inline abi_minframe* callers_abi() const { return (abi_minframe*) _fp; }

private:

  // Initialize frame members (_pc and _sp must be given)
  inline void setup();

public:

  const ImmutableOopMap* get_oop_map() const;

  // Constructors
  inline frame(intptr_t* sp, intptr_t* fp, address pc);
  inline frame(intptr_t* sp, address pc, intptr_t* unextended_sp = nullptr, intptr_t* fp = nullptr, CodeBlob* cb = nullptr);
  inline frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc, CodeBlob* cb, const ImmutableOopMap* oop_map);
  inline frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc, CodeBlob* cb, const ImmutableOopMap* oop_map, bool on_heap);

private:
  address*  sender_pc_addr(void) const;

public:

  inline ijava_state* get_ijava_state() const;
  // Some convenient register frame setters/getters for deoptimization.
  inline intptr_t* interpreter_frame_esp() const;
  inline void interpreter_frame_set_cpcache(ConstantPoolCache* cp);
  inline void interpreter_frame_set_esp(intptr_t* esp);
  inline void interpreter_frame_set_top_frame_sp(intptr_t* top_frame_sp);
  inline void interpreter_frame_set_sender_sp(intptr_t* sender_sp);

  template <typename RegisterMapT>
  static void update_map_with_saved_link(RegisterMapT* map, intptr_t** link_addr);

  // Size of a monitor in bytes.
  static int interpreter_frame_monitor_size_in_bytes();

  // The size of a cInterpreter object.
  static inline int interpreter_frame_cinterpreterstate_size_in_bytes();

  // Additional interface for entry frames:
  inline entry_frame_locals* get_entry_frame_locals() const {
    return (entry_frame_locals*) (((address) fp()) - entry_frame_locals_size);
  }

  enum {
    // normal return address is 1 bundle past PC
    pc_return_offset                       = 0,
    // size, in words, of frame metadata (e.g. pc and link)
    metadata_words                         = sizeof(abi_minframe) >> LogBytesPerWord,
    // size, in words, of metadata at frame bottom, i.e. it is not part of the
    // caller/callee overlap
    metadata_words_at_bottom               = 0,
    // size, in words, of frame metadata at the frame top, i.e. it is located
    // between a callee frame and its stack arguments, where it is part
    // of the caller/callee overlap
    metadata_words_at_top                  = sizeof(abi_minframe) >> LogBytesPerWord,
    // size, in words, of frame metadata at the frame top that needs
    // to be reserved for callee functions in the runtime
    frame_alignment                        = 16,
    frame_alignment_in_words               = frame_alignment >> LogBytesPerWord,
    // size, in words, of maximum shift in frame position due to alignment
    align_wiggle                           =  1
  };

  static jint interpreter_frame_expression_stack_direction() { return -1; }

  // returns the sending frame, without applying any barriers
  inline frame sender_raw(RegisterMap* map) const;

#endif // CPU_PPC_FRAME_PPC_HPP

quality100%

¤ Dauer der Verarbeitung: 0.2 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.