1 /*
  2  * Copyright (c) 2008, 2019, 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_FRAME_ARM_INLINE_HPP
 26 #define CPU_ARM_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_inclusive(_pc),
 79            "original PC must be in the main code section of the the compiled method (or must be immediately following it)");
 80     _deopt_state = is_deoptimized;
 81   } else {
 82     _deopt_state = not_deoptimized;
 83   }
 84 }
 85 
 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 
107 // Accessors
108 
109 inline bool frame::equal(frame other) const {
110   bool ret =  sp() == other.sp()
111               && unextended_sp() == other.unextended_sp()
112               && fp() == other.fp()
113               && pc() == other.pc();
114   assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction");
115   return ret;
116 }
117 
118 // Return unique id for this frame. The id must have a value where we can distinguish
119 // identity and younger/older relationship. NULL represents an invalid (incomparable)
120 // frame.
121 inline intptr_t* frame::id(void) const { return unextended_sp(); }
122 
123 // Return true if the frame is older (less recent activation) than the frame represented by id
124 inline bool frame::is_older(intptr_t* id) const   { assert(this->id() != NULL && id != NULL, "NULL frame id");
125                                                     return this->id() > id ; }
126 
127 
128 inline intptr_t* frame::link() const              { return (intptr_t*) *(intptr_t **)addr_at(link_offset); }
129 
130 inline intptr_t* frame::unextended_sp() const     { return _unextended_sp; }
131 
132 // Return address:
133 
134 inline address* frame::sender_pc_addr()      const { return (address*) addr_at(return_addr_offset); }
135 inline address  frame::sender_pc()           const { return *sender_pc_addr(); }
136 
137 inline intptr_t* frame::sender_sp() const { return addr_at(sender_sp_offset); }
138 
139 inline intptr_t** frame::interpreter_frame_locals_addr() const {
140   return (intptr_t**)addr_at(interpreter_frame_locals_offset);
141 }
142 
143 inline intptr_t* frame::interpreter_frame_last_sp() const {
144   return *(intptr_t**)addr_at(interpreter_frame_last_sp_offset);
145 }
146 
147 inline intptr_t* frame::interpreter_frame_bcp_addr() const {
148   return (intptr_t*)addr_at(interpreter_frame_bcp_offset);
149 }
150 
151 inline intptr_t* frame::interpreter_frame_mdp_addr() const {
152   return (intptr_t*)addr_at(interpreter_frame_mdp_offset);
153 }
154 
155 
156 // Constant pool cache
157 
158 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const {
159   return (ConstantPoolCache**)addr_at(interpreter_frame_cache_offset);
160 }
161 
162 // Method
163 
164 inline Method** frame::interpreter_frame_method_addr() const {
165   return (Method**)addr_at(interpreter_frame_method_offset);
166 }
167 
168 inline oop* frame::interpreter_frame_mirror_addr() const {
169   return (oop*)addr_at(interpreter_frame_mirror_offset);
170 }
171 
172 // top of expression stack
173 inline intptr_t* frame::interpreter_frame_tos_address() const {
174   intptr_t* last_sp = interpreter_frame_last_sp();
175   if (last_sp == NULL ) {
176     return sp();
177   } else {
178     // sp() may have been extended or shrunk by an adapter.  At least
179     // check that we don't fall behind the legal region.
180     // For top deoptimized frame last_sp == interpreter_frame_monitor_end.
181     assert(last_sp <= (intptr_t*) interpreter_frame_monitor_end(), "bad tos");
182     return last_sp;
183   }
184 }
185 
186 inline oop* frame::interpreter_frame_temp_oop_addr() const {
187   return (oop *)(fp() + interpreter_frame_oop_temp_offset);
188 }
189 
190 inline int frame::interpreter_frame_monitor_size() {
191   return BasicObjectLock::size();
192 }
193 
194 
195 // expression stack
196 // (the max_stack arguments are used by the GC; see class FrameClosure)
197 
198 inline intptr_t* frame::interpreter_frame_expression_stack() const {
199   intptr_t* monitor_end = (intptr_t*) interpreter_frame_monitor_end();
200   return monitor_end-1;
201 }
202 
203 
204 // Entry frames
205 
206 inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const {
207  return (JavaCallWrapper**)addr_at(entry_frame_call_wrapper_offset);
208 }
209 
210 
211 // Compiled frames
212 
213 inline oop frame::saved_oop_result(RegisterMap* map) const {
214   oop* result_adr = (oop*) map->location(R0->as_VMReg());
215   guarantee(result_adr != NULL, "bad register save location");
216   return (*result_adr);
217 }
218 
219 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) {
220   oop* result_adr = (oop*) map->location(R0->as_VMReg());
221   guarantee(result_adr != NULL, "bad register save location");
222   *result_adr = obj;
223 }
224 
225 #endif // CPU_ARM_FRAME_ARM_INLINE_HPP