1/* 2 * Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2012, 2017 SAP SE. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26#include "precompiled.hpp" 27#include "interpreter/interpreter.hpp" 28#include "memory/resourceArea.hpp" 29#include "oops/markOop.hpp" 30#include "oops/method.hpp" 31#include "oops/oop.inline.hpp" 32#include "runtime/frame.inline.hpp" 33#include "runtime/handles.inline.hpp" 34#include "runtime/javaCalls.hpp" 35#include "runtime/monitorChunk.hpp" 36#include "runtime/signature.hpp" 37#include "runtime/stubCodeGenerator.hpp" 38#include "runtime/stubRoutines.hpp" 39#ifdef COMPILER1 40#include "c1/c1_Runtime1.hpp" 41#include "runtime/vframeArray.hpp" 42#endif 43 44#ifdef ASSERT 45void RegisterMap::check_location_valid() { 46} 47#endif // ASSERT 48 49bool frame::safe_for_sender(JavaThread *thread) { 50 bool safe = false; 51 address cursp = (address)sp(); 52 address curfp = (address)fp(); 53 if ((cursp != NULL && curfp != NULL && 54 (cursp <= thread->stack_base() && cursp >= thread->stack_base() - thread->stack_size())) && 55 (curfp <= thread->stack_base() && curfp >= thread->stack_base() - thread->stack_size())) { 56 safe = true; 57 } 58 return safe; 59} 60 61bool frame::is_interpreted_frame() const { 62 return Interpreter::contains(pc()); 63} 64 65frame frame::sender_for_entry_frame(RegisterMap *map) const { 66 assert(map != NULL, "map must be set"); 67 // Java frame called from C; skip all C frames and return top C 68 // frame of that chunk as the sender. 69 JavaFrameAnchor* jfa = entry_frame_call_wrapper()->anchor(); 70 assert(!entry_frame_is_first(), "next Java fp must be non zero"); 71 assert(jfa->last_Java_sp() > _sp, "must be above this frame on stack"); 72 map->clear(); 73 assert(map->include_argument_oops(), "should be set by clear"); 74 75 if (jfa->last_Java_pc() != NULL) { 76 frame fr(jfa->last_Java_sp(), jfa->last_Java_pc()); 77 return fr; 78 } 79 // Last_java_pc is not set, if we come here from compiled code. The 80 // constructor retrieves the PC from the stack. 81 frame fr(jfa->last_Java_sp()); 82 return fr; 83} 84 85frame frame::sender_for_interpreter_frame(RegisterMap *map) const { 86 // Pass callers initial_caller_sp as unextended_sp. 87 return frame(sender_sp(), sender_pc(), (intptr_t*)get_ijava_state()->sender_sp); 88} 89 90frame frame::sender_for_compiled_frame(RegisterMap *map) const { 91 assert(map != NULL, "map must be set"); 92 93 // Frame owned by compiler. 94 address pc = *compiled_sender_pc_addr(_cb); 95 frame caller(compiled_sender_sp(_cb), pc); 96 97 // Now adjust the map. 98 99 // Get the rest. 100 if (map->update_map()) { 101 // Tell GC to use argument oopmaps for some runtime stubs that need it. 102 map->set_include_argument_oops(_cb->caller_must_gc_arguments(map->thread())); 103 if (_cb->oop_maps() != NULL) { 104 OopMapSet::update_register_map(this, map); 105 } 106 } 107 108 return caller; 109} 110 111intptr_t* frame::compiled_sender_sp(CodeBlob* cb) const { 112 return sender_sp(); 113} 114 115address* frame::compiled_sender_pc_addr(CodeBlob* cb) const { 116 return sender_pc_addr(); 117} 118 119frame frame::sender(RegisterMap* map) const { 120 // Default is we do have to follow them. The sender_for_xxx will 121 // update it accordingly. 122 map->set_include_argument_oops(false); 123 124 if (is_entry_frame()) return sender_for_entry_frame(map); 125 if (is_interpreted_frame()) return sender_for_interpreter_frame(map); 126 assert(_cb == CodeCache::find_blob(pc()),"Must be the same"); 127 128 if (_cb != NULL) { 129 return sender_for_compiled_frame(map); 130 } 131 // Must be native-compiled frame, i.e. the marshaling code for native 132 // methods that exists in the core system. 133 return frame(sender_sp(), sender_pc()); 134} 135 136void frame::patch_pc(Thread* thread, address pc) { 137 if (TracePcPatching) { 138 tty->print_cr("patch_pc at address " PTR_FORMAT " [" PTR_FORMAT " -> " PTR_FORMAT "]", 139 p2i(&((address*) _sp)[-1]), p2i(((address*) _sp)[-1]), p2i(pc)); 140 } 141 own_abi()->lr = (uint64_t)pc; 142 _cb = CodeCache::find_blob(pc); 143 if (_cb != NULL && _cb->is_nmethod() && ((nmethod*)_cb)->is_deopt_pc(_pc)) { 144 address orig = (((nmethod*)_cb)->get_original_pc(this)); 145 assert(orig == _pc, "expected original to be stored before patching"); 146 _deopt_state = is_deoptimized; 147 // Leave _pc as is. 148 } else { 149 _deopt_state = not_deoptimized; 150 _pc = pc; 151 } 152} 153 154bool frame::is_interpreted_frame_valid(JavaThread* thread) const { 155 // Is there anything to do? 156 assert(is_interpreted_frame(), "Not an interpreted frame"); 157 return true; 158} 159 160BasicType frame::interpreter_frame_result(oop* oop_result, jvalue* value_result) { 161 assert(is_interpreted_frame(), "interpreted frame expected"); 162 Method* method = interpreter_frame_method(); 163 BasicType type = method->result_type(); 164 165 if (method->is_native()) { 166 // Prior to calling into the runtime to notify the method exit the possible 167 // result value is saved into the interpreter frame. 168 address lresult = (address)&(get_ijava_state()->lresult); 169 address fresult = (address)&(get_ijava_state()->fresult); 170 171 switch (method->result_type()) { 172 case T_OBJECT: 173 case T_ARRAY: { 174 *oop_result = JNIHandles::resolve(*(jobject*)lresult); 175 break; 176 } 177 // We use std/stfd to store the values. 178 case T_BOOLEAN : value_result->z = (jboolean) *(unsigned long*)lresult; break; 179 case T_INT : value_result->i = (jint) *(long*)lresult; break; 180 case T_CHAR : value_result->c = (jchar) *(unsigned long*)lresult; break; 181 case T_SHORT : value_result->s = (jshort) *(long*)lresult; break; 182 case T_BYTE : value_result->z = (jbyte) *(long*)lresult; break; 183 case T_LONG : value_result->j = (jlong) *(long*)lresult; break; 184 case T_FLOAT : value_result->f = (jfloat) *(double*)fresult; break; 185 case T_DOUBLE : value_result->d = (jdouble) *(double*)fresult; break; 186 case T_VOID : /* Nothing to do */ break; 187 default : ShouldNotReachHere(); 188 } 189 } else { 190 intptr_t* tos_addr = interpreter_frame_tos_address(); 191 switch (method->result_type()) { 192 case T_OBJECT: 193 case T_ARRAY: { 194 oop obj = *(oop*)tos_addr; 195 assert(obj == NULL || Universe::heap()->is_in(obj), "sanity check"); 196 *oop_result = obj; 197 } 198 case T_BOOLEAN : value_result->z = (jboolean) *(jint*)tos_addr; break; 199 case T_BYTE : value_result->b = (jbyte) *(jint*)tos_addr; break; 200 case T_CHAR : value_result->c = (jchar) *(jint*)tos_addr; break; 201 case T_SHORT : value_result->s = (jshort) *(jint*)tos_addr; break; 202 case T_INT : value_result->i = *(jint*)tos_addr; break; 203 case T_LONG : value_result->j = *(jlong*)tos_addr; break; 204 case T_FLOAT : value_result->f = *(jfloat*)tos_addr; break; 205 case T_DOUBLE : value_result->d = *(jdouble*)tos_addr; break; 206 case T_VOID : /* Nothing to do */ break; 207 default : ShouldNotReachHere(); 208 } 209 } 210 return type; 211} 212 213#ifndef PRODUCT 214 215void frame::describe_pd(FrameValues& values, int frame_no) { 216 if (is_interpreted_frame()) { 217#define DESCRIBE_ADDRESS(name) \ 218 values.describe(frame_no, (intptr_t*)&(get_ijava_state()->name), #name); 219 220 DESCRIBE_ADDRESS(method); 221 DESCRIBE_ADDRESS(mirror); 222 DESCRIBE_ADDRESS(locals); 223 DESCRIBE_ADDRESS(monitors); 224 DESCRIBE_ADDRESS(cpoolCache); 225 DESCRIBE_ADDRESS(bcp); 226 DESCRIBE_ADDRESS(esp); 227 DESCRIBE_ADDRESS(mdx); 228 DESCRIBE_ADDRESS(top_frame_sp); 229 DESCRIBE_ADDRESS(sender_sp); 230 DESCRIBE_ADDRESS(oop_tmp); 231 DESCRIBE_ADDRESS(lresult); 232 DESCRIBE_ADDRESS(fresult); 233 } 234} 235#endif 236 237intptr_t *frame::initial_deoptimization_info() { 238 // unused... but returns fp() to minimize changes introduced by 7087445 239 return fp(); 240} 241 242#ifndef PRODUCT 243// This is a generic constructor which is only used by pns() in debug.cpp. 244frame::frame(void* sp, void* fp, void* pc) : _sp((intptr_t*)sp), _unextended_sp((intptr_t*)sp) { 245 find_codeblob_and_set_pc_and_deopt_state((address)pc); // also sets _fp and adjusts _unextended_sp 246} 247#endif 248