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 /*

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  * Copyright 2012, 2013 SAP AG. 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

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  */

 #ifndef CPU_PPC_VM_FRAME_PPC_HPP

 #define CPU_PPC_VM_FRAME_PPC_HPP

 #include "runtime/synchronizer.hpp"

 #include "utilities/top.hpp"

 #ifndef CC_INTERP

 #error "CC_INTERP must be defined on PPC64"

 #endif

   //  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

   enum {

     // stack alignment

     alignment_in_bytes = 16,

     // log_2(16*8 bits) = 7.

     log_2_of_alignment_in_bits = 7

   };

   // 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 _abi(_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 interpreter on PPC64.

   //

   //  This frame layout provides a C-like frame for every Java frame.

   //

   //  In these figures the stack grows upwards, while memory grows

   //  downwards. Square brackets denote regions possibly larger than

   //  single 64 bit slots.

   //

   //  STACK (no JNI, no compiled code, no library calls,

   //         interpreter-loop is active):

   //    0       [InterpretMethod]

   //            [TOP_IJAVA_FRAME]

   //            [PARENT_IJAVA_FRAME]

   //            ...

   //            [PARENT_IJAVA_FRAME]

   //            [ENTRY_FRAME]

   //            [C_FRAME]

   //            ...

   //            [C_FRAME]

   //

   //  TOP_IJAVA_FRAME:

   //    0       [TOP_IJAVA_FRAME_ABI]

   //            alignment (optional)

   //            [operand stack]

   //            [monitors] (optional)

   //            [cInterpreter object]

   //            result, locals, and arguments are in parent 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)

   //            [cInterpreter object]

   //

   //  ENTRY_FRAME:

   //    0       [PARENT_IJAVA_FRAME_ABI]

   //            alignment (optional)

   //            [callee's Java result]

   //            [callee's locals w/o arguments]

   //            [outgoing arguments]

   //            [ENTRY_FRAME_LOCALS]

   //

   //  PARENT_IJAVA_FRAME_ABI:

   //    0       [ABI_MINFRAME]

   //            top_frame_sp

   //            initial_caller_sp

   //

   //  TOP_IJAVA_FRAME_ABI:

   //    0       [PARENT_IJAVA_FRAME_ABI]

   //            carg_3_unused

   //            carg_4_unused

   //            carg_5_unused

   //            carg_6_unused

   //            carg_7_unused

   //            frame_manager_lr

   //

   // PARENT_IJAVA_FRAME_ABI

   struct parent_ijava_frame_abi : abi_minframe {

     // SOE registers.

     // C2i adapters spill their top-frame stack-pointer here.

     uint64_t top_frame_sp;                        //      carg_1

     // Sp of calling compiled frame before it was resized by the c2i

     // adapter or sp of call stub. Does not contain a valid value for

     // non-initial frames.

     uint64_t initial_caller_sp;                   //      carg_2

     // aligned to frame::alignment_in_bytes (16)

   };

   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))

   // TOP_IJAVA_FRAME_ABI

   struct top_ijava_frame_abi : parent_ijava_frame_abi {

     uint64_t carg_3_unused;                       //      carg_3

     uint64_t card_4_unused;                       //_16   carg_4

     uint64_t carg_5_unused;                       //      carg_5

     uint64_t carg_6_unused;                       //_16   carg_6

     uint64_t carg_7_unused;                       //      carg_7

     // Use arg8 for storing frame_manager_lr. The size of

     // top_ijava_frame_abi must match abi_reg_args.

     uint64_t frame_manager_lr;                    //_16   carg_8

     // nothing to add here!

     // aligned to frame::alignment_in_bytes (16)

   };

   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))

   // 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)

   //            ...

   //

   // frame pointer for this frame

   intptr_t* _fp;

   // The frame's stack pointer before it has been extended by a c2i adapter;

   // needed by deoptimization

   intptr_t* _unextended_sp;

   void adjust_unextended_sp();

  public:

   // Accessors for fields

   intptr_t* fp() const { return _fp; }

   // Accessors for ABIs

   inline abi_minframe* own_abi()     const { return (abi_minframe*) _sp; }

   inline abi_minframe* callers_abi() const { return (abi_minframe*) _fp; }

  private:

   // Find codeblob and set deopt_state.

   inline void find_codeblob_and_set_pc_and_deopt_state(address pc);

  public:

   // Constructors

   inline frame(intptr_t* sp);

   frame(intptr_t* sp, address pc);

   inline frame(intptr_t* sp, address pc, intptr_t* unextended_sp);

  private:

   intptr_t* compiled_sender_sp(CodeBlob* cb) const;

   address*  compiled_sender_pc_addr(CodeBlob* cb) const;

   address*  sender_pc_addr(void) const;

  public:

 #ifdef CC_INTERP

   // Additional interface for interpreter frames:

   inline interpreterState get_interpreterState() const;

 #endif // CC_INTERP

   // 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();

  private:

   ConstantPoolCache** interpreter_frame_cpoolcache_addr() const;

  public:

   // 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

   };

 #endif // CPU_PPC_VM_FRAME_PPC_HPP