4013
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/*
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* Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved.
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* Copyright 2007, 2008, 2009 Red Hat, Inc.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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*/
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#include "incls/_precompiled.incl"
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#include "incls/_frame_zero.cpp.incl"
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#ifdef ASSERT
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void RegisterMap::check_location_valid() {
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ShouldNotCallThis();
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}
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#endif
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bool frame::is_interpreted_frame() const {
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return zeroframe()->is_interpreter_frame();
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}
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bool frame::is_fake_stub_frame() const {
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return zeroframe()->is_fake_stub_frame();
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}
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frame frame::sender_for_entry_frame(RegisterMap *map) const {
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assert(map != NULL, "map must be set");
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assert(!entry_frame_is_first(), "next Java fp must be non zero");
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assert(entry_frame_call_wrapper()->anchor()->last_Java_sp() == sender_sp(),
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"sender should be next Java frame");
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map->clear();
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assert(map->include_argument_oops(), "should be set by clear");
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return frame(sender_sp(), sp() + 1);
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}
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frame frame::sender_for_interpreter_frame(RegisterMap *map) const {
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return frame(sender_sp(), sp() + 1);
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}
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frame frame::sender_for_compiled_frame(RegisterMap *map) const {
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return frame(sender_sp(), sp() + 1);
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}
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frame frame::sender_for_fake_stub_frame(RegisterMap *map) const {
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return frame(sender_sp(), sp() + 1);
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}
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frame frame::sender(RegisterMap* map) const {
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// Default is not to follow arguments; the various
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// sender_for_xxx methods update this accordingly.
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map->set_include_argument_oops(false);
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if (is_entry_frame())
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return sender_for_entry_frame(map);
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if (is_interpreted_frame())
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return sender_for_interpreter_frame(map);
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if (is_compiled_frame())
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return sender_for_compiled_frame(map);
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if (is_fake_stub_frame())
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return sender_for_fake_stub_frame(map);
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ShouldNotReachHere();
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}
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#ifdef CC_INTERP
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BasicObjectLock* frame::interpreter_frame_monitor_begin() const {
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return get_interpreterState()->monitor_base();
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}
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BasicObjectLock* frame::interpreter_frame_monitor_end() const {
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return (BasicObjectLock*) get_interpreterState()->stack_base();
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}
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#endif // CC_INTERP
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void frame::patch_pc(Thread* thread, address pc) {
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// We borrow this call to set the thread pointer in the interpreter
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// state; the hook to set up deoptimized frames isn't supplied it.
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assert(pc == NULL, "should be");
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get_interpreterState()->set_thread((JavaThread *) thread);
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}
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bool frame::safe_for_sender(JavaThread *thread) {
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ShouldNotCallThis();
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}
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void frame::pd_gc_epilog() {
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}
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bool frame::is_interpreted_frame_valid(JavaThread *thread) const {
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ShouldNotCallThis();
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}
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BasicType frame::interpreter_frame_result(oop* oop_result,
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jvalue* value_result) {
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assert(is_interpreted_frame(), "interpreted frame expected");
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methodOop method = interpreter_frame_method();
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BasicType type = method->result_type();
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intptr_t* tos_addr = (intptr_t *) interpreter_frame_tos_address();
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oop obj;
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switch (type) {
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case T_VOID:
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break;
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case T_BOOLEAN:
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value_result->z = *(jboolean *) tos_addr;
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break;
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case T_BYTE:
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value_result->b = *(jbyte *) tos_addr;
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break;
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case T_CHAR:
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value_result->c = *(jchar *) tos_addr;
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break;
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case T_SHORT:
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value_result->s = *(jshort *) tos_addr;
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break;
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case T_INT:
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value_result->i = *(jint *) tos_addr;
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break;
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case T_LONG:
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value_result->j = *(jlong *) tos_addr;
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break;
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case T_FLOAT:
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value_result->f = *(jfloat *) tos_addr;
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break;
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case T_DOUBLE:
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value_result->d = *(jdouble *) tos_addr;
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break;
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case T_OBJECT:
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case T_ARRAY:
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if (method->is_native()) {
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obj = get_interpreterState()->oop_temp();
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}
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else {
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oop* obj_p = (oop *) tos_addr;
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obj = (obj_p == NULL) ? (oop) NULL : *obj_p;
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}
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assert(obj == NULL || Universe::heap()->is_in(obj), "sanity check");
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*oop_result = obj;
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break;
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default:
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ShouldNotReachHere();
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}
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return type;
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}
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int frame::frame_size(RegisterMap* map) const {
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#ifdef PRODUCT
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ShouldNotCallThis();
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#else
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return 0; // make javaVFrame::print_value work
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#endif // PRODUCT
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}
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intptr_t* frame::interpreter_frame_tos_at(jint offset) const {
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int index = (Interpreter::expr_offset_in_bytes(offset) / wordSize);
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return &interpreter_frame_tos_address()[index];
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}
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void frame::zero_print_on_error(int frame_index,
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outputStream* st,
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char* buf,
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int buflen) const {
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// Divide the buffer between the field and the value
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buflen >>= 1;
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char *fieldbuf = buf;
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char *valuebuf = buf + buflen;
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// Print each word of the frame
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for (intptr_t *addr = fp(); addr <= sp(); addr++) {
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int offset = sp() - addr;
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// Fill in default values, then try and improve them
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snprintf(fieldbuf, buflen, "word[%d]", offset);
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snprintf(valuebuf, buflen, PTR_FORMAT, *addr);
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zeroframe()->identify_word(frame_index, offset, fieldbuf, valuebuf, buflen);
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fieldbuf[buflen - 1] = '\0';
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valuebuf[buflen - 1] = '\0';
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// Print the result
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st->print_cr(" " PTR_FORMAT ": %-21s = %s", addr, fieldbuf, valuebuf);
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}
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}
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void ZeroFrame::identify_word(int frame_index,
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int offset,
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char* fieldbuf,
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char* valuebuf,
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int buflen) const {
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switch (offset) {
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case next_frame_off:
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strncpy(fieldbuf, "next_frame", buflen);
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break;
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case frame_type_off:
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strncpy(fieldbuf, "frame_type", buflen);
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if (is_entry_frame())
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strncpy(valuebuf, "ENTRY_FRAME", buflen);
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else if (is_interpreter_frame())
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strncpy(valuebuf, "INTERPRETER_FRAME", buflen);
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else if (is_shark_frame())
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strncpy(valuebuf, "SHARK_FRAME", buflen);
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else if (is_fake_stub_frame())
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strncpy(valuebuf, "FAKE_STUB_FRAME", buflen);
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break;
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default:
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if (is_entry_frame()) {
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as_entry_frame()->identify_word(
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frame_index, offset, fieldbuf, valuebuf, buflen);
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}
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else if (is_interpreter_frame()) {
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as_interpreter_frame()->identify_word(
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frame_index, offset, fieldbuf, valuebuf, buflen);
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}
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else if (is_shark_frame()) {
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as_shark_frame()->identify_word(
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frame_index, offset, fieldbuf, valuebuf, buflen);
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}
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else if (is_fake_stub_frame()) {
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as_fake_stub_frame()->identify_word(
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frame_index, offset, fieldbuf, valuebuf, buflen);
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}
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}
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}
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void EntryFrame::identify_word(int frame_index,
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int offset,
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char* fieldbuf,
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char* valuebuf,
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int buflen) const {
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switch (offset) {
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case call_wrapper_off:
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strncpy(fieldbuf, "call_wrapper", buflen);
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break;
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default:
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snprintf(fieldbuf, buflen, "local[%d]", offset - 3);
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}
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}
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void InterpreterFrame::identify_word(int frame_index,
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int offset,
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char* fieldbuf,
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char* valuebuf,
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int buflen) const {
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interpreterState istate = interpreter_state();
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bool is_valid = istate->self_link() == istate;
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intptr_t *addr = addr_of_word(offset);
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// Fixed part
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if (addr >= (intptr_t *) istate) {
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const char *field = istate->name_of_field_at_address((address) addr);
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if (field) {
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if (is_valid && !strcmp(field, "_method")) {
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istate->method()->name_and_sig_as_C_string(valuebuf, buflen);
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}
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else if (is_valid && !strcmp(field, "_bcp") && istate->bcp()) {
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snprintf(valuebuf, buflen, PTR_FORMAT " (bci %d)",
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(intptr_t) istate->bcp(),
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istate->method()->bci_from(istate->bcp()));
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}
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snprintf(fieldbuf, buflen, "%sistate->%s",
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field[strlen(field) - 1] == ')' ? "(": "", field);
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}
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else if (addr == (intptr_t *) istate) {
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strncpy(fieldbuf, "(vtable for istate)", buflen);
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}
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return;
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}
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// Variable part
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if (!is_valid)
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return;
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// JNI stuff
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if (istate->method()->is_native() && addr < istate->stack_base()) {
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address hA = istate->method()->signature_handler();
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if (hA != NULL) {
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if (hA != (address) InterpreterRuntime::slow_signature_handler) {
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InterpreterRuntime::SignatureHandler *handler =
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InterpreterRuntime::SignatureHandler::from_handlerAddr(hA);
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intptr_t *params = istate->stack_base() - handler->argument_count();
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if (addr >= params) {
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int param = addr - params;
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const char *desc = "";
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if (param == 0)
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desc = " (JNIEnv)";
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else if (param == 1) {
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if (istate->method()->is_static())
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desc = " (mirror)";
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else
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desc = " (this)";
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}
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snprintf(fieldbuf, buflen, "parameter[%d]%s", param, desc);
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return;
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}
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for (int i = 0; i < handler->argument_count(); i++) {
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if (params[i] == (intptr_t) addr) {
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snprintf(fieldbuf, buflen, "unboxed parameter[%d]", i);
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return;
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}
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}
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}
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}
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return;
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}
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// Monitors and stack
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identify_vp_word(frame_index, addr,
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(intptr_t *) istate->monitor_base(),
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istate->stack_base(),
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fieldbuf, buflen);
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}
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void SharkFrame::identify_word(int frame_index,
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int offset,
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char* fieldbuf,
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char* valuebuf,
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int buflen) const {
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// Fixed part
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switch (offset) {
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case pc_off:
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strncpy(fieldbuf, "pc", buflen);
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if (method()->is_oop()) {
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nmethod *code = method()->code();
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if (code && code->pc_desc_at(pc())) {
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SimpleScopeDesc ssd(code, pc());
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snprintf(valuebuf, buflen, PTR_FORMAT " (bci %d)",
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(intptr_t) pc(), ssd.bci());
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}
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}
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return;
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case unextended_sp_off:
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strncpy(fieldbuf, "unextended_sp", buflen);
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return;
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case method_off:
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strncpy(fieldbuf, "method", buflen);
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if (method()->is_oop()) {
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method()->name_and_sig_as_C_string(valuebuf, buflen);
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}
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return;
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case oop_tmp_off:
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strncpy(fieldbuf, "oop_tmp", buflen);
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return;
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}
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// Variable part
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if (method()->is_oop()) {
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identify_vp_word(frame_index, addr_of_word(offset),
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addr_of_word(header_words + 1),
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unextended_sp() + method()->max_stack(),
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fieldbuf, buflen);
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}
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}
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void ZeroFrame::identify_vp_word(int frame_index,
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intptr_t* addr,
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intptr_t* monitor_base,
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intptr_t* stack_base,
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char* fieldbuf,
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int buflen) const {
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// Monitors
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if (addr >= stack_base && addr < monitor_base) {
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int monitor_size = frame::interpreter_frame_monitor_size();
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int last_index = (monitor_base - stack_base) / monitor_size - 1;
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int index = last_index - (addr - stack_base) / monitor_size;
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intptr_t monitor = (intptr_t) (
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(BasicObjectLock *) monitor_base - 1 - index);
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intptr_t offset = (intptr_t) addr - monitor;
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398 |
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399 |
if (offset == BasicObjectLock::obj_offset_in_bytes())
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snprintf(fieldbuf, buflen, "monitor[%d]->_obj", index);
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else if (offset == BasicObjectLock::lock_offset_in_bytes())
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snprintf(fieldbuf, buflen, "monitor[%d]->_lock", index);
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404 |
return;
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405 |
}
|
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406 |
|
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407 |
// Expression stack
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408 |
if (addr < stack_base) {
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409 |
snprintf(fieldbuf, buflen, "%s[%d]",
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410 |
frame_index == 0 ? "stack_word" : "local",
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411 |
(int) (stack_base - addr - 1));
|
|
412 |
return;
|
|
413 |
}
|
|
414 |
}
|