1 /*

     2  * Copyright (c) 2008, 2016, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     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

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    24 

    25 #ifndef CPU_ARM_VM_FRAME_ARM_INLINE_HPP

    26 #define CPU_ARM_VM_FRAME_ARM_INLINE_HPP

    27 

    28 #include "code/codeCache.hpp"

    29 #include "code/vmreg.inline.hpp"

    30 

    31 // Inline functions for ARM frames:

    32 

    33 // Constructors:

    34 

    35 inline frame::frame() {

    36   _pc = NULL;

    37   _sp = NULL;

    38   _unextended_sp = NULL;

    39   _fp = NULL;

    40   _cb = NULL;

    41   _deopt_state = unknown;

    42 }

    43 

    44 inline void frame::init(intptr_t* sp, intptr_t* fp, address pc) {

    45   _sp = sp;

    46   _unextended_sp = sp;

    47   _fp = fp;

    48   _pc = pc;

    49   assert(pc != NULL, "no pc?");

    50   _cb = CodeCache::find_blob(pc);

    51   adjust_unextended_sp();

    52 

    53   address original_pc = CompiledMethod::get_deopt_original_pc(this);

    54   if (original_pc != NULL) {

    55     _pc = original_pc;

    56     _deopt_state = is_deoptimized;

    57   } else {

    58     _deopt_state = not_deoptimized;

    59   }

    60 }

    61 

    62 inline frame::frame(intptr_t* sp, intptr_t* fp, address pc) {

    63   init(sp, fp, pc);

    64 }

    65 

    66 inline frame::frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc) {

    67   _sp = sp;

    68   _unextended_sp = unextended_sp;

    69   _fp = fp;

    70   _pc = pc;

    71   assert(pc != NULL, "no pc?");

    72   _cb = CodeCache::find_blob(pc);

    73   adjust_unextended_sp();

    74 

    75   address original_pc = CompiledMethod::get_deopt_original_pc(this);

    76   if (original_pc != NULL) {

    77     _pc = original_pc;

    78     assert(_cb->as_compiled_method()->insts_contains(_pc), "original PC must be in CompiledMethod");

    79     _deopt_state = is_deoptimized;

    80   } else {

    81     _deopt_state = not_deoptimized;

    82   }

    83 }

    84 

    85 #ifndef AARCH64

    86 

    87 inline frame::frame(intptr_t* sp, intptr_t* fp) {

    88   _sp = sp;

    89   _unextended_sp = sp;

    90   _fp = fp;

    91   assert(sp != NULL,"null SP ?");

    92   _pc = (address)(sp[-1]);

    93   // assert(_pc != NULL, "no pc?"); // see comments in x86

    94   _cb = CodeCache::find_blob(_pc);

    95   adjust_unextended_sp();

    96 

    97   address original_pc = CompiledMethod::get_deopt_original_pc(this);

    98   if (original_pc != NULL) {

    99     _pc = original_pc;

   100     _deopt_state = is_deoptimized;

   101   } else {

   102     _deopt_state = not_deoptimized;

   103   }

   104 }

   105 

   106 #endif // !AARCH64

   107 

   108 // Accessors

   109 

   110 inline bool frame::equal(frame other) const {

   111   bool ret =  sp() == other.sp()

   112               && unextended_sp() == other.unextended_sp()

   113               && fp() == other.fp()

   114               && pc() == other.pc();

   115   assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction");

   116   return ret;

   117 }

   118 

   119 // Return unique id for this frame. The id must have a value where we can distinguish

   120 // identity and younger/older relationship. NULL represents an invalid (incomparable)

   121 // frame.

   122 inline intptr_t* frame::id(void) const { return unextended_sp(); }

   123 

   124 // Relationals on frames based

   125 // Return true if the frame is younger (more recent activation) than the frame represented by id

   126 inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");

   127                                                     return this->id() < id ; }

   128 

   129 // Return true if the frame is older (less recent activation) than the frame represented by id

   130 inline bool frame::is_older(intptr_t* id) const   { assert(this->id() != NULL && id != NULL, "NULL frame id");

   131                                                     return this->id() > id ; }

   132 

   133 

   134 

   135 inline intptr_t* frame::link() const              { return (intptr_t*) *(intptr_t **)addr_at(link_offset); }

   136 

   137 inline intptr_t* frame::unextended_sp() const     { return _unextended_sp; }

   138 

   139 // Return address:

   140 

   141 inline address* frame::sender_pc_addr()      const { return (address*) addr_at(return_addr_offset); }

   142 inline address  frame::sender_pc()           const { return *sender_pc_addr(); }

   143 

   144 inline intptr_t* frame::sender_sp() const { return addr_at(sender_sp_offset); }

   145 

   146 inline intptr_t** frame::interpreter_frame_locals_addr() const {

   147   return (intptr_t**)addr_at(interpreter_frame_locals_offset);

   148 }

   149 

   150 #ifndef AARCH64

   151 inline intptr_t* frame::interpreter_frame_last_sp() const {

   152   return *(intptr_t**)addr_at(interpreter_frame_last_sp_offset);

   153 }

   154 #endif // !AARCH64

   155 

   156 inline intptr_t* frame::interpreter_frame_bcp_addr() const {

   157   return (intptr_t*)addr_at(interpreter_frame_bcp_offset);

   158 }

   159 

   160 inline intptr_t* frame::interpreter_frame_mdp_addr() const {

   161   return (intptr_t*)addr_at(interpreter_frame_mdp_offset);

   162 }

   163 

   164 

   165 // Constant pool cache

   166 

   167 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const {

   168   return (ConstantPoolCache**)addr_at(interpreter_frame_cache_offset);

   169 }

   170 

   171 // Method

   172 

   173 inline Method** frame::interpreter_frame_method_addr() const {

   174   return (Method**)addr_at(interpreter_frame_method_offset);

   175 }

   176 

   177 inline oop* frame::interpreter_frame_mirror_addr() const {

   178   return (oop*)addr_at(interpreter_frame_mirror_offset);

   179 }

   180 

   181 // top of expression stack

   182 inline intptr_t* frame::interpreter_frame_tos_address() const {

   183 #ifdef AARCH64

   184   intptr_t* stack_top = (intptr_t*)*addr_at(interpreter_frame_stack_top_offset);

   185   assert(stack_top != NULL, "should be stored before call");

   186   assert(stack_top <= (intptr_t*) interpreter_frame_monitor_end(), "bad tos");

   187   return stack_top;

   188 #else

   189   intptr_t* last_sp = interpreter_frame_last_sp();

   190   if (last_sp == NULL ) {

   191     return sp();

   192   } else {

   193     // sp() may have been extended or shrunk by an adapter.  At least

   194     // check that we don't fall behind the legal region.

   195     // For top deoptimized frame last_sp == interpreter_frame_monitor_end.

   196     assert(last_sp <= (intptr_t*) interpreter_frame_monitor_end(), "bad tos");

   197     return last_sp;

   198   }

   199 #endif // AARCH64

   200 }

   201 

   202 inline oop* frame::interpreter_frame_temp_oop_addr() const {

   203   return (oop *)(fp() + interpreter_frame_oop_temp_offset);

   204 }

   205 

   206 inline int frame::interpreter_frame_monitor_size() {

   207   return BasicObjectLock::size();

   208 }

   209 

   210 

   211 // expression stack

   212 // (the max_stack arguments are used by the GC; see class FrameClosure)

   213 

   214 inline intptr_t* frame::interpreter_frame_expression_stack() const {

   215   intptr_t* monitor_end = (intptr_t*) interpreter_frame_monitor_end();

   216   return monitor_end-1;

   217 }

   218 

   219 

   220 inline jint frame::interpreter_frame_expression_stack_direction() { return -1; }

   221 

   222 

   223 // Entry frames

   224 

   225 inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const {

   226  return (JavaCallWrapper**)addr_at(entry_frame_call_wrapper_offset);

   227 }

   228 

   229 

   230 // Compiled frames

   231 

   232 inline bool frame::volatile_across_calls(Register reg) {

   233   return true;

   234 }

   235 

   236 inline oop frame::saved_oop_result(RegisterMap* map) const {

   237   oop* result_adr = (oop*) map->location(R0->as_VMReg());

   238   guarantee(result_adr != NULL, "bad register save location");

   239   return (*result_adr);

   240 }

   241 

   242 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) {

   243   oop* result_adr = (oop*) map->location(R0->as_VMReg());

   244   guarantee(result_adr != NULL, "bad register save location");

   245   *result_adr = obj;

   246 }

   247 

   248 #endif // CPU_ARM_VM_FRAME_ARM_INLINE_HPP