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src/share/vm/interpreter/bytecodeStream.cpp@2d8a650513c2 (annotated)

src/share/vm/interpreter/bytecodeStream.cpp

Fri, 29 Apr 2016 00:06:10 +0800

author

aoqi

date

Fri, 29 Apr 2016 00:06:10 +0800

changeset 1

2d8a650513c2

parent 0

f90c822e73f8

child 6876

710a3c8b516e

permissions

-rw-r--r--

Added MIPS 64-bit port.

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*
aoqi@0	23	*/
aoqi@0	24
aoqi@0	25	#include "precompiled.hpp"
aoqi@0	26	#include "interpreter/bytecodeStream.hpp"
aoqi@0	27	#include "interpreter/bytecodes.hpp"
aoqi@0	28
aoqi@0	29	Bytecodes::Code RawBytecodeStream::raw_next_special(Bytecodes::Code code) {
aoqi@0	30	assert(!is_last_bytecode(), "should have been checked");
aoqi@0	31	// set next bytecode position
aoqi@0	32	address bcp = RawBytecodeStream::bcp();
aoqi@0	33	address end = method()->code_base() + end_bci();
aoqi@0	34	int l = Bytecodes::raw_special_length_at(bcp, end);
aoqi@0	35	if (l <= 0 || (_bci + l) > _end_bci) {
aoqi@0	36	code = Bytecodes::_illegal;
aoqi@0	37	} else {
aoqi@0	38	_next_bci += l;
aoqi@0	39	assert(_bci < _next_bci, "length must be > 0");
aoqi@0	40	// set attributes
aoqi@0	41	_is_wide = false;
aoqi@0	42	// check for special (uncommon) cases
aoqi@0	43	if (code == Bytecodes::_wide) {
aoqi@0	44	if (bcp + 1 >= end) {
aoqi@0	45	code = Bytecodes::_illegal;
aoqi@0	46	} else {
aoqi@0	47	code = (Bytecodes::Code)bcp[1];
aoqi@0	48	_is_wide = true;
aoqi@0	49	}
aoqi@0	50	}
aoqi@0	51	}
aoqi@0	52	_raw_code = code;
aoqi@0	53	return code;
aoqi@0	54	}
aoqi@0	55
aoqi@0	56	#ifdef ASSERT
aoqi@0	57	void BaseBytecodeStream::assert_raw_index_size(int size) const {
aoqi@0	58	if (raw_code() == Bytecodes::_invokedynamic && is_raw()) {
aoqi@0	59	// in raw mode, pretend indy is "bJJ__"
aoqi@0	60	assert(size == 2, "raw invokedynamic instruction has 2-byte index only");
aoqi@0	61	} else {
aoqi@0	62	bytecode().assert_index_size(size, raw_code(), is_wide());
aoqi@0	63	}
aoqi@0	64	}
aoqi@0	65
aoqi@0	66	void BaseBytecodeStream::assert_raw_stream(bool want_raw) const {
aoqi@0	67	if (want_raw) {
aoqi@0	68	assert( is_raw(), "this function only works on raw streams");
aoqi@0	69	} else {
aoqi@0	70	assert(!is_raw(), "this function only works on non-raw streams");
aoqi@0	71	}
aoqi@0	72	}
aoqi@0	73	#endif //ASSERT