never@1445: /*
mikael@6198:  * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
twisti@3045:  * Copyright 2007, 2008, 2009, 2010, 2011 Red Hat, Inc.
never@1445:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
never@1445:  *
never@1445:  * This code is free software; you can redistribute it and/or modify it
never@1445:  * under the terms of the GNU General Public License version 2 only, as
never@1445:  * published by the Free Software Foundation.
never@1445:  *
never@1445:  * This code is distributed in the hope that it will be useful, but WITHOUT
never@1445:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
never@1445:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
never@1445:  * version 2 for more details (a copy is included in the LICENSE file that
never@1445:  * accompanied this code).
never@1445:  *
never@1445:  * You should have received a copy of the GNU General Public License version
never@1445:  * 2 along with this work; if not, write to the Free Software Foundation,
never@1445:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
never@1445:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
never@1445:  *
never@1445:  */
never@1445: 
stefank@2314: #include "precompiled.hpp"
stefank@2314: #include "code/scopeDesc.hpp"
stefank@2314: #include "interpreter/interpreter.hpp"
stefank@2314: #include "interpreter/interpreterRuntime.hpp"
stefank@2314: #include "memory/resourceArea.hpp"
stefank@2314: #include "oops/markOop.hpp"
coleenp@4037: #include "oops/method.hpp"
stefank@2314: #include "oops/oop.inline.hpp"
stefank@2314: #include "runtime/frame.inline.hpp"
stefank@2314: #include "runtime/handles.inline.hpp"
stefank@2314: #include "runtime/javaCalls.hpp"
stefank@2314: #include "runtime/monitorChunk.hpp"
stefank@2314: #include "runtime/signature.hpp"
stefank@2314: #include "runtime/stubCodeGenerator.hpp"
stefank@2314: #include "runtime/stubRoutines.hpp"
stefank@2314: #include "vmreg_zero.inline.hpp"
stefank@2314: #ifdef COMPILER1
stefank@2314: #include "c1/c1_Runtime1.hpp"
stefank@2314: #include "runtime/vframeArray.hpp"
stefank@2314: #endif
never@1445: 
never@1445: #ifdef ASSERT
never@1445: void RegisterMap::check_location_valid() {
never@1445:   ShouldNotCallThis();
never@1445: }
never@1445: #endif
never@1445: 
never@1445: bool frame::is_interpreted_frame() const {
never@1445:   return zeroframe()->is_interpreter_frame();
never@1445: }
never@1445: 
twisti@1867: bool frame::is_fake_stub_frame() const {
twisti@1867:   return zeroframe()->is_fake_stub_frame();
twisti@1867: }
twisti@1867: 
never@1445: frame frame::sender_for_entry_frame(RegisterMap *map) const {
twisti@1513:   assert(zeroframe()->is_entry_frame(), "wrong type of frame");
never@1445:   assert(map != NULL, "map must be set");
never@1445:   assert(!entry_frame_is_first(), "next Java fp must be non zero");
never@1445:   assert(entry_frame_call_wrapper()->anchor()->last_Java_sp() == sender_sp(),
never@1445:          "sender should be next Java frame");
never@1445:   map->clear();
never@1445:   assert(map->include_argument_oops(), "should be set by clear");
twisti@1860:   return frame(zeroframe()->next(), sender_sp());
never@1445: }
never@1445: 
twisti@1513: frame frame::sender_for_nonentry_frame(RegisterMap *map) const {
twisti@1513:   assert(zeroframe()->is_interpreter_frame() ||
twisti@1513:          zeroframe()->is_shark_frame() ||
twisti@1513:          zeroframe()->is_fake_stub_frame(), "wrong type of frame");
twisti@1860:   return frame(zeroframe()->next(), sender_sp());
never@1445: }
never@1445: 
never@1445: frame frame::sender(RegisterMap* map) const {
never@1445:   // Default is not to follow arguments; the various
never@1445:   // sender_for_xxx methods update this accordingly.
never@1445:   map->set_include_argument_oops(false);
never@1445: 
never@1445:   if (is_entry_frame())
never@1445:     return sender_for_entry_frame(map);
twisti@1513:   else
twisti@1513:     return sender_for_nonentry_frame(map);
never@1445: }
never@1445: 
never@1445: #ifdef CC_INTERP
never@1445: BasicObjectLock* frame::interpreter_frame_monitor_begin() const {
never@1445:   return get_interpreterState()->monitor_base();
never@1445: }
never@1445: 
never@1445: BasicObjectLock* frame::interpreter_frame_monitor_end() const {
never@1445:   return (BasicObjectLock*) get_interpreterState()->stack_base();
never@1445: }
never@1445: #endif // CC_INTERP
never@1445: 
never@1445: void frame::patch_pc(Thread* thread, address pc) {
twisti@4442: 
twisti@4442:   if (pc != NULL) {
twisti@4442:     _cb = CodeCache::find_blob(pc);
twisti@4442:     SharkFrame* sharkframe = zeroframe()->as_shark_frame();
twisti@4442:     sharkframe->set_pc(pc);
twisti@4442:     _pc = pc;
twisti@4442:     _deopt_state = is_deoptimized;
twisti@4442: 
twisti@4442:   } else {
twisti@4442:     // We borrow this call to set the thread pointer in the interpreter
twisti@4442:     // state; the hook to set up deoptimized frames isn't supplied it.
twisti@4442:     assert(pc == NULL, "should be");
twisti@4442:     get_interpreterState()->set_thread((JavaThread *) thread);
twisti@4442:   }
never@1445: }
never@1445: 
never@1445: bool frame::safe_for_sender(JavaThread *thread) {
never@1445:   ShouldNotCallThis();
twisti@5545:   return false;
never@1445: }
never@1445: 
never@1445: void frame::pd_gc_epilog() {
never@1445: }
never@1445: 
never@1445: bool frame::is_interpreted_frame_valid(JavaThread *thread) const {
never@1445:   ShouldNotCallThis();
twisti@5545:   return false;
never@1445: }
never@1445: 
never@1445: BasicType frame::interpreter_frame_result(oop* oop_result,
never@1445:                                           jvalue* value_result) {
never@1445:   assert(is_interpreted_frame(), "interpreted frame expected");
coleenp@4037:   Method* method = interpreter_frame_method();
never@1445:   BasicType type = method->result_type();
never@1445:   intptr_t* tos_addr = (intptr_t *) interpreter_frame_tos_address();
never@1445:   oop obj;
never@1445: 
never@1445:   switch (type) {
never@1445:   case T_VOID:
never@1445:     break;
never@1445:   case T_BOOLEAN:
never@1445:     value_result->z = *(jboolean *) tos_addr;
never@1445:     break;
never@1445:   case T_BYTE:
never@1445:     value_result->b = *(jbyte *) tos_addr;
never@1445:     break;
never@1445:   case T_CHAR:
never@1445:     value_result->c = *(jchar *) tos_addr;
never@1445:     break;
never@1445:   case T_SHORT:
never@1445:     value_result->s = *(jshort *) tos_addr;
never@1445:     break;
never@1445:   case T_INT:
never@1445:     value_result->i = *(jint *) tos_addr;
never@1445:     break;
never@1445:   case T_LONG:
never@1445:     value_result->j = *(jlong *) tos_addr;
never@1445:     break;
never@1445:   case T_FLOAT:
never@1445:     value_result->f = *(jfloat *) tos_addr;
never@1445:     break;
never@1445:   case T_DOUBLE:
never@1445:     value_result->d = *(jdouble *) tos_addr;
never@1445:     break;
never@1445: 
never@1445:   case T_OBJECT:
never@1445:   case T_ARRAY:
never@1445:     if (method->is_native()) {
never@1445:       obj = get_interpreterState()->oop_temp();
never@1445:     }
never@1445:     else {
never@1445:       oop* obj_p = (oop *) tos_addr;
never@1445:       obj = (obj_p == NULL) ? (oop) NULL : *obj_p;
never@1445:     }
never@1445:     assert(obj == NULL || Universe::heap()->is_in(obj), "sanity check");
never@1445:     *oop_result = obj;
never@1445:     break;
never@1445: 
never@1445:   default:
never@1445:     ShouldNotReachHere();
never@1445:   }
never@1445: 
never@1445:   return type;
never@1445: }
never@1445: 
never@1445: int frame::frame_size(RegisterMap* map) const {
never@1445: #ifdef PRODUCT
never@1445:   ShouldNotCallThis();
twisti@5545: #endif // PRODUCT
never@1445:   return 0; // make javaVFrame::print_value work
never@1445: }
never@1445: 
never@1445: intptr_t* frame::interpreter_frame_tos_at(jint offset) const {
never@1445:   int index = (Interpreter::expr_offset_in_bytes(offset) / wordSize);
never@1445:   return &interpreter_frame_tos_address()[index];
never@1445: }
never@1445: 
never@1445: void frame::zero_print_on_error(int           frame_index,
never@1445:                                 outputStream* st,
never@1445:                                 char*         buf,
never@1445:                                 int           buflen) const {
never@1445:   // Divide the buffer between the field and the value
never@1445:   buflen >>= 1;
never@1445:   char *fieldbuf = buf;
never@1445:   char *valuebuf = buf + buflen;
never@1445: 
never@1445:   // Print each word of the frame
twisti@1860:   for (intptr_t *addr = sp(); addr <= fp(); addr++) {
twisti@1860:     int offset = fp() - addr;
never@1445: 
never@1445:     // Fill in default values, then try and improve them
never@1445:     snprintf(fieldbuf, buflen, "word[%d]", offset);
never@1445:     snprintf(valuebuf, buflen, PTR_FORMAT, *addr);
never@1445:     zeroframe()->identify_word(frame_index, offset, fieldbuf, valuebuf, buflen);
never@1445:     fieldbuf[buflen - 1] = '\0';
never@1445:     valuebuf[buflen - 1] = '\0';
never@1445: 
never@1445:     // Print the result
never@1445:     st->print_cr(" " PTR_FORMAT ": %-21s = %s", addr, fieldbuf, valuebuf);
never@1445:   }
never@1445: }
never@1445: 
never@1445: void ZeroFrame::identify_word(int   frame_index,
never@1445:                               int   offset,
never@1445:                               char* fieldbuf,
never@1445:                               char* valuebuf,
never@1445:                               int   buflen) const {
never@1445:   switch (offset) {
never@1445:   case next_frame_off:
never@1445:     strncpy(fieldbuf, "next_frame", buflen);
never@1445:     break;
never@1445: 
never@1445:   case frame_type_off:
never@1445:     strncpy(fieldbuf, "frame_type", buflen);
never@1445:     if (is_entry_frame())
never@1445:       strncpy(valuebuf, "ENTRY_FRAME", buflen);
never@1445:     else if (is_interpreter_frame())
never@1445:       strncpy(valuebuf, "INTERPRETER_FRAME", buflen);
never@1445:     else if (is_shark_frame())
never@1445:       strncpy(valuebuf, "SHARK_FRAME", buflen);
never@1445:     else if (is_fake_stub_frame())
never@1445:       strncpy(valuebuf, "FAKE_STUB_FRAME", buflen);
never@1445:     break;
never@1445: 
never@1445:   default:
never@1445:     if (is_entry_frame()) {
never@1445:       as_entry_frame()->identify_word(
never@1445:         frame_index, offset, fieldbuf, valuebuf, buflen);
never@1445:     }
never@1445:     else if (is_interpreter_frame()) {
never@1445:       as_interpreter_frame()->identify_word(
never@1445:         frame_index, offset, fieldbuf, valuebuf, buflen);
never@1445:     }
never@1445:     else if (is_shark_frame()) {
never@1445:       as_shark_frame()->identify_word(
never@1445:         frame_index, offset, fieldbuf, valuebuf, buflen);
never@1445:     }
never@1445:     else if (is_fake_stub_frame()) {
never@1445:       as_fake_stub_frame()->identify_word(
never@1445:         frame_index, offset, fieldbuf, valuebuf, buflen);
never@1445:     }
never@1445:   }
never@1445: }
never@1445: 
never@1445: void EntryFrame::identify_word(int   frame_index,
never@1445:                                int   offset,
never@1445:                                char* fieldbuf,
never@1445:                                char* valuebuf,
never@1445:                                int   buflen) const {
never@1445:   switch (offset) {
never@1445:   case call_wrapper_off:
never@1445:     strncpy(fieldbuf, "call_wrapper", buflen);
never@1445:     break;
never@1445: 
never@1445:   default:
never@1445:     snprintf(fieldbuf, buflen, "local[%d]", offset - 3);
never@1445:   }
never@1445: }
never@1445: 
never@1445: void InterpreterFrame::identify_word(int   frame_index,
never@1445:                                      int   offset,
never@1445:                                      char* fieldbuf,
never@1445:                                      char* valuebuf,
never@1445:                                      int   buflen) const {
never@1445:   interpreterState istate = interpreter_state();
never@1445:   bool is_valid = istate->self_link() == istate;
never@1445:   intptr_t *addr = addr_of_word(offset);
never@1445: 
never@1445:   // Fixed part
never@1445:   if (addr >= (intptr_t *) istate) {
never@1445:     const char *field = istate->name_of_field_at_address((address) addr);
never@1445:     if (field) {
never@1445:       if (is_valid && !strcmp(field, "_method")) {
never@1445:         istate->method()->name_and_sig_as_C_string(valuebuf, buflen);
never@1445:       }
never@1445:       else if (is_valid && !strcmp(field, "_bcp") && istate->bcp()) {
never@1445:         snprintf(valuebuf, buflen, PTR_FORMAT " (bci %d)",
never@1445:                  (intptr_t) istate->bcp(),
never@1445:                  istate->method()->bci_from(istate->bcp()));
never@1445:       }
never@1445:       snprintf(fieldbuf, buflen, "%sistate->%s",
never@1445:                field[strlen(field) - 1] == ')' ? "(": "", field);
never@1445:     }
never@1445:     else if (addr == (intptr_t *) istate) {
never@1445:       strncpy(fieldbuf, "(vtable for istate)", buflen);
never@1445:     }
never@1445:     return;
never@1445:   }
never@1445: 
never@1445:   // Variable part
never@1445:   if (!is_valid)
never@1445:     return;
never@1445: 
never@1445:   // JNI stuff
never@1445:   if (istate->method()->is_native() && addr < istate->stack_base()) {
never@1445:     address hA = istate->method()->signature_handler();
never@1445:     if (hA != NULL) {
never@1445:       if (hA != (address) InterpreterRuntime::slow_signature_handler) {
never@1445:         InterpreterRuntime::SignatureHandler *handler =
never@1445:           InterpreterRuntime::SignatureHandler::from_handlerAddr(hA);
never@1445: 
never@1445:         intptr_t *params = istate->stack_base() - handler->argument_count();
never@1445:         if (addr >= params) {
never@1445:           int param = addr - params;
never@1445:           const char *desc = "";
never@1445:           if (param == 0)
never@1445:             desc = " (JNIEnv)";
never@1445:           else if (param == 1) {
never@1445:             if (istate->method()->is_static())
never@1445:               desc = " (mirror)";
never@1445:             else
never@1445:               desc = " (this)";
never@1445:           }
never@1445:           snprintf(fieldbuf, buflen, "parameter[%d]%s", param, desc);
never@1445:           return;
never@1445:         }
never@1445: 
never@1445:         for (int i = 0; i < handler->argument_count(); i++) {
never@1445:           if (params[i] == (intptr_t) addr) {
never@1445:             snprintf(fieldbuf, buflen, "unboxed parameter[%d]", i);
never@1445:             return;
never@1445:           }
never@1445:         }
never@1445:       }
never@1445:     }
never@1445:     return;
never@1445:   }
never@1445: 
never@1445:   // Monitors and stack
never@1445:   identify_vp_word(frame_index, addr,
never@1445:                    (intptr_t *) istate->monitor_base(),
never@1445:                    istate->stack_base(),
never@1445:                    fieldbuf, buflen);
never@1445: }
never@1445: 
never@1445: void SharkFrame::identify_word(int   frame_index,
never@1445:                                int   offset,
never@1445:                                char* fieldbuf,
never@1445:                                char* valuebuf,
never@1445:                                int   buflen) const {
never@1445:   // Fixed part
never@1445:   switch (offset) {
never@1445:   case pc_off:
never@1445:     strncpy(fieldbuf, "pc", buflen);
twisti@4237:     if (method()->is_method()) {
never@1445:       nmethod *code = method()->code();
never@1445:       if (code && code->pc_desc_at(pc())) {
never@1445:         SimpleScopeDesc ssd(code, pc());
never@1445:         snprintf(valuebuf, buflen, PTR_FORMAT " (bci %d)",
never@1445:                  (intptr_t) pc(), ssd.bci());
never@1445:       }
never@1445:     }
never@1445:     return;
never@1445: 
never@1445:   case unextended_sp_off:
never@1445:     strncpy(fieldbuf, "unextended_sp", buflen);
never@1445:     return;
never@1445: 
never@1445:   case method_off:
never@1445:     strncpy(fieldbuf, "method", buflen);
twisti@4237:     if (method()->is_method()) {
never@1445:       method()->name_and_sig_as_C_string(valuebuf, buflen);
never@1445:     }
never@1445:     return;
never@1445: 
never@1445:   case oop_tmp_off:
never@1445:     strncpy(fieldbuf, "oop_tmp", buflen);
never@1445:     return;
never@1445:   }
never@1445: 
never@1445:   // Variable part
twisti@4237:   if (method()->is_method()) {
never@1445:     identify_vp_word(frame_index, addr_of_word(offset),
never@1445:                      addr_of_word(header_words + 1),
never@1445:                      unextended_sp() + method()->max_stack(),
never@1445:                      fieldbuf, buflen);
never@1445:   }
never@1445: }
never@1445: 
never@1445: void ZeroFrame::identify_vp_word(int       frame_index,
never@1445:                                  intptr_t* addr,
never@1445:                                  intptr_t* monitor_base,
never@1445:                                  intptr_t* stack_base,
never@1445:                                  char*     fieldbuf,
never@1445:                                  int       buflen) const {
never@1445:   // Monitors
never@1445:   if (addr >= stack_base && addr < monitor_base) {
never@1445:     int monitor_size = frame::interpreter_frame_monitor_size();
never@1445:     int last_index = (monitor_base - stack_base) / monitor_size - 1;
never@1445:     int index = last_index - (addr - stack_base) / monitor_size;
never@1445:     intptr_t monitor = (intptr_t) (
never@1445:       (BasicObjectLock *) monitor_base - 1 - index);
never@1445:     intptr_t offset = (intptr_t) addr - monitor;
never@1445: 
never@1445:     if (offset == BasicObjectLock::obj_offset_in_bytes())
never@1445:       snprintf(fieldbuf, buflen, "monitor[%d]->_obj", index);
never@1445:     else if (offset ==  BasicObjectLock::lock_offset_in_bytes())
never@1445:       snprintf(fieldbuf, buflen, "monitor[%d]->_lock", index);
never@1445: 
never@1445:     return;
never@1445:   }
never@1445: 
never@1445:   // Expression stack
never@1445:   if (addr < stack_base) {
never@1445:     snprintf(fieldbuf, buflen, "%s[%d]",
never@1445:              frame_index == 0 ? "stack_word" : "local",
never@1445:              (int) (stack_base - addr - 1));
never@1445:     return;
never@1445:   }
never@1445: }
twisti@3045: 
bdelsart@3451: #ifndef PRODUCT
twisti@3045: 
twisti@3045: void frame::describe_pd(FrameValues& values, int frame_no) {
twisti@3045: 
twisti@3045: }
twisti@3045: 
twisti@3045: #endif
bdelsart@3130: 
bdelsart@3130: intptr_t *frame::initial_deoptimization_info() {
bdelsart@3130:   // unused... but returns fp() to minimize changes introduced by 7087445
bdelsart@3130:   return fp();
bdelsart@3130: }