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src/cpu/zero/vm/stack_zero.cpp@8c95980d0b66 (annotated)

src/cpu/zero/vm/stack_zero.cpp

Sat, 07 Nov 2020 10:30:02 +0800

author

aoqi

date

Sat, 07 Nov 2020 10:30:02 +0800

changeset 10026

8c95980d0b66

parent 7994

04ff2f6cd0eb

permissions

-rw-r--r--

Added tag mips-jdk8u275-b01 for changeset d3b4d62f391f

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* Copyright 2010 Red Hat, Inc.
aoqi@0	4	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	5	*
aoqi@0	6	* This code is free software; you can redistribute it and/or modify it
aoqi@0	7	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	8	* published by the Free Software Foundation.
aoqi@0	9	*
aoqi@0	10	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	11	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	12	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	13	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	14	* accompanied this code).
aoqi@0	15	*
aoqi@0	16	* You should have received a copy of the GNU General Public License version
aoqi@0	17	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	18	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	19	*
aoqi@0	20	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	21	* or visit www.oracle.com if you need additional information or have any
aoqi@0	22	* questions.
aoqi@0	23	*
aoqi@0	24	*/
aoqi@0	25
aoqi@0	26	#include "precompiled.hpp"
aoqi@0	27	#include "interpreter/interpreterRuntime.hpp"
aoqi@0	28	#include "stack_zero.hpp"
aoqi@0	29	#include "stack_zero.inline.hpp"
aoqi@0	30
aoqi@0	31	int ZeroStack::suggest_size(Thread *thread) const {
aoqi@0	32	assert(needs_setup(), "already set up");
simonis@7599	33	int abi_available = abi_stack_available(thread);
simonis@7599	34	assert(abi_available >= 0, "available abi stack must be >= 0");
simonis@7599	35	return align_size_down(abi_available / 2, wordSize);
aoqi@0	36	}
aoqi@0	37
aoqi@0	38	void ZeroStack::handle_overflow(TRAPS) {
aoqi@0	39	JavaThread *thread = (JavaThread *) THREAD;
aoqi@0	40
aoqi@0	41	// Set up the frame anchor if it isn't already
aoqi@0	42	bool has_last_Java_frame = thread->has_last_Java_frame();
aoqi@0	43	if (!has_last_Java_frame) {
aoqi@0	44	intptr_t *sp = thread->zero_stack()->sp();
aoqi@0	45	ZeroFrame *frame = thread->top_zero_frame();
aoqi@0	46	while (frame) {
aoqi@0	47	if (frame->is_shark_frame())
aoqi@0	48	break;
aoqi@0	49
aoqi@0	50	if (frame->is_interpreter_frame()) {
aoqi@0	51	interpreterState istate =
aoqi@0	52	frame->as_interpreter_frame()->interpreter_state();
aoqi@0	53	if (istate->self_link() == istate)
aoqi@0	54	break;
aoqi@0	55	}
aoqi@0	56
aoqi@0	57	sp = ((intptr_t *) frame) + 1;
aoqi@0	58	frame = frame->next();
aoqi@0	59	}
aoqi@0	60
aoqi@0	61	if (frame == NULL)
aoqi@0	62	fatal("unrecoverable stack overflow");
aoqi@0	63
aoqi@0	64	thread->set_last_Java_frame(frame, sp);
aoqi@0	65	}
aoqi@0	66
aoqi@0	67	// Throw the exception
aoqi@0	68	switch (thread->thread_state()) {
aoqi@0	69	case _thread_in_Java:
aoqi@0	70	InterpreterRuntime::throw_StackOverflowError(thread);
aoqi@0	71	break;
aoqi@0	72
aoqi@0	73	case _thread_in_vm:
aoqi@0	74	Exceptions::throw_stack_overflow_exception(thread, __FILE__, __LINE__,
aoqi@0	75	methodHandle());
aoqi@0	76	break;
aoqi@0	77
aoqi@0	78	default:
aoqi@0	79	ShouldNotReachHere();
aoqi@0	80	}
aoqi@0	81
aoqi@0	82	// Reset the frame anchor if necessary
aoqi@0	83	if (!has_last_Java_frame)
aoqi@0	84	thread->reset_last_Java_frame();
aoqi@0	85	}
aoqi@0	86
aoqi@0	87	#ifndef PRODUCT
aoqi@0	88	void ZeroStack::zap(int c) {
aoqi@0	89	memset(_base, c, available_words() * wordSize);
aoqi@0	90	}
aoqi@0	91	#endif // PRODUCT