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src/share/vm/interpreter/bytecodes.cpp@8012aa3ccede (annotated)

src/share/vm/interpreter/bytecodes.cpp

Thu, 13 Jan 2011 22:15:41 -0800

author

never

date

Thu, 13 Jan 2011 22:15:41 -0800

changeset 2462

8012aa3ccede

parent 2314

f95d63e2154a

child 2508

b92c45f2bc75

permissions

-rw-r--r--

4926272: methodOopDesc::method_from_bcp is unsafe
Reviewed-by: coleenp, jrose, kvn, dcubed

duke@435	1	/*
never@2462	2	* Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
stefank@2314	25	#include "precompiled.hpp"
stefank@2314	26	#include "interpreter/bytecodes.hpp"
stefank@2314	27	#include "memory/resourceArea.hpp"
stefank@2314	28	#include "oops/methodOop.hpp"
stefank@2314	29	#ifdef TARGET_ARCH_x86
stefank@2314	30	# include "bytes_x86.hpp"
stefank@2314	31	#endif
stefank@2314	32	#ifdef TARGET_ARCH_sparc
stefank@2314	33	# include "bytes_sparc.hpp"
stefank@2314	34	#endif
stefank@2314	35	#ifdef TARGET_ARCH_zero
stefank@2314	36	# include "bytes_zero.hpp"
stefank@2314	37	#endif
duke@435	38
duke@435	39
prr@1881	40	#if defined(WIN32) && (defined(_MSC_VER) && (_MSC_VER < 1600))
duke@435	41	// Windows AMD64 Compiler Hangs compiling this file
duke@435	42	// unless optimization is off
duke@435	43	#ifdef _M_AMD64
duke@435	44	#pragma optimize ("", off)
duke@435	45	#endif
prr@1881	46	#endif
duke@435	47
duke@435	48
duke@435	49	bool Bytecodes::_is_initialized = false;
duke@435	50	const char* Bytecodes::_name [Bytecodes::number_of_codes];
duke@435	51	BasicType Bytecodes::_result_type [Bytecodes::number_of_codes];
duke@435	52	s_char Bytecodes::_depth [Bytecodes::number_of_codes];
jrose@1920	53	u_char Bytecodes::_lengths [Bytecodes::number_of_codes];
duke@435	54	Bytecodes::Code Bytecodes::_java_code [Bytecodes::number_of_codes];
jrose@1920	55	u_short Bytecodes::_flags [(1<<BitsPerByte)*2];
duke@435	56
never@2462	57	#ifdef ASSERT
never@2462	58	bool Bytecodes::check_method(const methodOopDesc* method, address bcp) {
never@2462	59	return method->contains(bcp);
never@2462	60	}
never@2462	61	#endif
never@2462	62
never@2462	63	bool Bytecodes::check_must_rewrite(Bytecodes::Code code) {
never@2462	64	assert(can_rewrite(code), "post-check only");
never@2462	65
never@2462	66	// Some codes are conditionally rewriting. Look closely at them.
never@2462	67	switch (code) {
never@2462	68	case Bytecodes::_aload_0:
never@2462	69	// Even if RewriteFrequentPairs is turned on,
never@2462	70	// the _aload_0 code might delay its rewrite until
never@2462	71	// a following _getfield rewrites itself.
never@2462	72	return false;
never@2462	73
never@2462	74	case Bytecodes::_lookupswitch:
never@2462	75	return false; // the rewrite is not done by the interpreter
never@2462	76
never@2462	77	case Bytecodes::_new:
never@2462	78	// (Could actually look at the class here, but the profit would be small.)
never@2462	79	return false; // the rewrite is not always done
never@2462	80	}
never@2462	81
never@2462	82	// No other special cases.
never@2462	83	return true;
never@2462	84	}
duke@435	85
duke@435	86	Bytecodes::Code Bytecodes::code_at(methodOop method, int bci) {
never@2462	87	return code_at(method, method->bcp_from(bci));
duke@435	88	}
duke@435	89
never@2462	90	Bytecodes::Code Bytecodes::non_breakpoint_code_at(const methodOopDesc* method, address bcp) {
never@2462	91	assert(method != NULL, "must have the method for breakpoint conversion");
never@2462	92	assert(method->contains(bcp), "must be valid bcp in method");
duke@435	93	return method->orig_bytecode_at(method->bci_from(bcp));
duke@435	94	}
duke@435	95
never@2462	96	int Bytecodes::special_length_at(Bytecodes::Code code, address bcp, address end) {
duke@435	97	switch (code) {
duke@435	98	case _wide:
kamg@848	99	if (end != NULL && bcp + 1 >= end) {
kamg@848	100	return -1; // don't read past end of code buffer
kamg@848	101	}
duke@435	102	return wide_length_for(cast(*(bcp + 1)));
duke@435	103	case _tableswitch:
duke@435	104	{ address aligned_bcp = (address)round_to((intptr_t)bcp + 1, jintSize);
kamg@848	105	if (end != NULL && aligned_bcp + 3*jintSize >= end) {
kamg@848	106	return -1; // don't read past end of code buffer
kamg@848	107	}
duke@435	108	jlong lo = (jint)Bytes::get_Java_u4(aligned_bcp + 1*jintSize);
duke@435	109	jlong hi = (jint)Bytes::get_Java_u4(aligned_bcp + 2*jintSize);
duke@435	110	jlong len = (aligned_bcp - bcp) + (3 + hi - lo + 1)*jintSize;
duke@435	111	// only return len if it can be represented as a positive int;
duke@435	112	// return -1 otherwise
duke@435	113	return (len > 0 && len == (int)len) ? len : -1;
duke@435	114	}
duke@435	115
duke@435	116	case _lookupswitch: // fall through
duke@435	117	case _fast_binaryswitch: // fall through
duke@435	118	case _fast_linearswitch:
duke@435	119	{ address aligned_bcp = (address)round_to((intptr_t)bcp + 1, jintSize);
kamg@848	120	if (end != NULL && aligned_bcp + 2*jintSize >= end) {
kamg@848	121	return -1; // don't read past end of code buffer
kamg@848	122	}
duke@435	123	jlong npairs = (jint)Bytes::get_Java_u4(aligned_bcp + jintSize);
duke@435	124	jlong len = (aligned_bcp - bcp) + (2 + 2*npairs)*jintSize;
duke@435	125	// only return len if it can be represented as a positive int;
duke@435	126	// return -1 otherwise
duke@435	127	return (len > 0 && len == (int)len) ? len : -1;
duke@435	128	}
duke@435	129	}
jrose@1925	130	// Note: Length functions must return <=0 for invalid bytecodes.
duke@435	131	return 0;
duke@435	132	}
duke@435	133
duke@435	134	// At a breakpoint instruction, this returns the breakpoint's length,
duke@435	135	// otherwise, it's the same as special_length_at(). This is used by
duke@435	136	// the RawByteCodeStream, which wants to see the actual bytecode
duke@435	137	// values (including breakpoint). RawByteCodeStream is used by the
duke@435	138	// verifier when reading in bytecode to verify. Other mechanisms that
duke@435	139	// run at runtime (such as generateOopMaps) need to iterate over the code
duke@435	140	// and don't expect to see breakpoints: they want to see the instruction
kamg@848	141	// which was replaced so that they can get the correct length and find
duke@435	142	// the next bytecode.
kamg@848	143	//
kamg@848	144	// 'end' indicates the end of the code buffer, which we should not try to read
kamg@848	145	// past.
kamg@848	146	int Bytecodes::raw_special_length_at(address bcp, address end) {
duke@435	147	Code code = code_or_bp_at(bcp);
duke@435	148	if (code == _breakpoint) {
duke@435	149	return 1;
duke@435	150	} else {
never@2462	151	return special_length_at(code, bcp, end);
duke@435	152	}
duke@435	153	}
duke@435	154
duke@435	155
duke@435	156
duke@435	157	void Bytecodes::def(Code code, const char* name, const char* format, const char* wide_format, BasicType result_type, int depth, bool can_trap) {
duke@435	158	def(code, name, format, wide_format, result_type, depth, can_trap, code);
duke@435	159	}
duke@435	160
duke@435	161
duke@435	162	void Bytecodes::def(Code code, const char* name, const char* format, const char* wide_format, BasicType result_type, int depth, bool can_trap, Code java_code) {
duke@435	163	assert(wide_format == NULL || format != NULL, "short form must exist if there's a wide form");
jrose@1920	164	int len = (format != NULL ? (int) strlen(format) : 0);
jrose@1920	165	int wlen = (wide_format != NULL ? (int) strlen(wide_format) : 0);
duke@435	166	_name [code] = name;
duke@435	167	_result_type [code] = result_type;
duke@435	168	_depth [code] = depth;
jrose@1920	169	_lengths [code] = (wlen << 4) | (len & 0xF);
duke@435	170	_java_code [code] = java_code;
jrose@1920	171	int bc_flags = 0;
jrose@1920	172	if (can_trap) bc_flags |= _bc_can_trap;
jrose@1920	173	if (java_code != code) bc_flags |= _bc_can_rewrite;
jrose@1920	174	_flags[(u1)code+0*(1<<BitsPerByte)] = compute_flags(format, bc_flags);
jrose@1920	175	_flags[(u1)code+1*(1<<BitsPerByte)] = compute_flags(wide_format, bc_flags);
jrose@1920	176	assert(is_defined(code) == (format != NULL), "");
jrose@1920	177	assert(wide_is_defined(code) == (wide_format != NULL), "");
jrose@1920	178	assert(length_for(code) == len, "");
jrose@1920	179	assert(wide_length_for(code) == wlen, "");
duke@435	180	}
duke@435	181
duke@435	182
duke@435	183	// Format strings interpretation:
duke@435	184	//
duke@435	185	// b: bytecode
duke@435	186	// c: signed constant, Java byte-ordering
jrose@1920	187	// i: unsigned local index, Java byte-ordering (I = native byte ordering)
jrose@1920	188	// j: unsigned CP cache index, Java byte-ordering (J = native byte ordering)
jrose@1920	189	// k: unsigned CP index, Java byte-ordering
jrose@1920	190	// o: branch offset, Java byte-ordering
duke@435	191	// _: unused/ignored
duke@435	192	// w: wide bytecode
duke@435	193	//
jrose@1920	194	// Note: The format strings are used for 2 purposes:
duke@435	195	// 1. to specify the length of the bytecode
duke@435	196	// (= number of characters in format string)
jrose@1920	197	// 2. to derive bytecode format flags (_fmt_has_k, etc.)
duke@435	198	//
duke@435	199	// Note: For bytecodes with variable length, the format string is the empty string.
duke@435	200
jrose@1920	201	int Bytecodes::compute_flags(const char* format, int more_flags) {
jrose@1920	202	if (format == NULL) return 0; // not even more_flags
jrose@1920	203	int flags = more_flags;
jrose@1920	204	const char* fp = format;
jrose@1920	205	switch (*fp) {
jrose@1920	206	case '\0':
jrose@1920	207	flags |= _fmt_not_simple; // but variable
jrose@1920	208	break;
jrose@1920	209	case 'b':
jrose@1920	210	flags |= _fmt_not_variable; // but simple
jrose@1920	211	++fp; // skip 'b'
jrose@1920	212	break;
jrose@1920	213	case 'w':
jrose@1920	214	flags |= _fmt_not_variable | _fmt_not_simple;
jrose@1920	215	++fp; // skip 'w'
jrose@1920	216	guarantee(*fp == 'b', "wide format must start with 'wb'");
jrose@1920	217	++fp; // skip 'b'
jrose@1920	218	break;
jrose@1920	219	}
jrose@1920	220
jrose@1920	221	int has_nbo = 0, has_jbo = 0, has_size = 0;
jrose@1920	222	for (;;) {
jrose@1920	223	int this_flag = 0;
jrose@1920	224	char fc = *fp++;
jrose@1920	225	switch (fc) {
jrose@1920	226	case '\0': // end of string
jrose@1920	227	assert(flags == (jchar)flags, "change _format_flags");
jrose@1920	228	return flags;
jrose@1920	229
jrose@1920	230	case '_': continue; // ignore these
jrose@1920	231
jrose@1920	232	case 'j': this_flag = _fmt_has_j; has_jbo = 1; break;
jrose@1920	233	case 'k': this_flag = _fmt_has_k; has_jbo = 1; break;
jrose@1920	234	case 'i': this_flag = _fmt_has_i; has_jbo = 1; break;
jrose@1920	235	case 'c': this_flag = _fmt_has_c; has_jbo = 1; break;
jrose@1920	236	case 'o': this_flag = _fmt_has_o; has_jbo = 1; break;
jrose@1920	237
jrose@1920	238	// uppercase versions mark native byte order (from Rewriter)
jrose@1920	239	// actually, only the 'J' case happens currently
jrose@1920	240	case 'J': this_flag = _fmt_has_j; has_nbo = 1; break;
jrose@1920	241	case 'K': this_flag = _fmt_has_k; has_nbo = 1; break;
jrose@1920	242	case 'I': this_flag = _fmt_has_i; has_nbo = 1; break;
jrose@1920	243	case 'C': this_flag = _fmt_has_c; has_nbo = 1; break;
jrose@1920	244	case 'O': this_flag = _fmt_has_o; has_nbo = 1; break;
jrose@1920	245	default: guarantee(false, "bad char in format");
jrose@1920	246	}
jrose@1920	247
jrose@1920	248	flags |= this_flag;
jrose@1920	249
jrose@1920	250	guarantee(!(has_jbo && has_nbo), "mixed byte orders in format");
jrose@1920	251	if (has_nbo)
jrose@1920	252	flags |= _fmt_has_nbo;
jrose@1920	253
jrose@1920	254	int this_size = 1;
jrose@1920	255	if (*fp == fc) {
jrose@1920	256	// advance beyond run of the same characters
jrose@1920	257	this_size = 2;
jrose@1920	258	while (*++fp == fc) this_size++;
jrose@1920	259	switch (this_size) {
jrose@1920	260	case 2: flags |= _fmt_has_u2; break;
jrose@1920	261	case 4: flags |= _fmt_has_u4; break;
jrose@1920	262	default: guarantee(false, "bad rep count in format");
jrose@1920	263	}
jrose@1920	264	}
jrose@1920	265	guarantee(has_size == 0 || // no field yet
jrose@1920	266	this_size == has_size || // same size
jrose@1920	267	this_size < has_size && *fp == '\0', // last field can be short
jrose@1920	268	"mixed field sizes in format");
jrose@1920	269	has_size = this_size;
jrose@1920	270	}
jrose@1920	271	}
jrose@1920	272
duke@435	273	void Bytecodes::initialize() {
duke@435	274	if (_is_initialized) return;
duke@435	275	assert(number_of_codes <= 256, "too many bytecodes");
duke@435	276
duke@435	277	// initialize bytecode tables - didn't use static array initializers
duke@435	278	// (such as {}) so we can do additional consistency checks and init-
duke@435	279	// code is independent of actual bytecode numbering.
duke@435	280	//
duke@435	281	// Note 1: NULL for the format string means the bytecode doesn't exist
duke@435	282	// in that form.
duke@435	283	//
duke@435	284	// Note 2: The result type is T_ILLEGAL for bytecodes where the top of stack
duke@435	285	// type after execution is not only determined by the bytecode itself.
duke@435	286
duke@435	287	// Java bytecodes
duke@435	288	// bytecode bytecode name format wide f. result tp stk traps
duke@435	289	def(_nop , "nop" , "b" , NULL , T_VOID , 0, false);
duke@435	290	def(_aconst_null , "aconst_null" , "b" , NULL , T_OBJECT , 1, false);
duke@435	291	def(_iconst_m1 , "iconst_m1" , "b" , NULL , T_INT , 1, false);
duke@435	292	def(_iconst_0 , "iconst_0" , "b" , NULL , T_INT , 1, false);
duke@435	293	def(_iconst_1 , "iconst_1" , "b" , NULL , T_INT , 1, false);
duke@435	294	def(_iconst_2 , "iconst_2" , "b" , NULL , T_INT , 1, false);
duke@435	295	def(_iconst_3 , "iconst_3" , "b" , NULL , T_INT , 1, false);
duke@435	296	def(_iconst_4 , "iconst_4" , "b" , NULL , T_INT , 1, false);
duke@435	297	def(_iconst_5 , "iconst_5" , "b" , NULL , T_INT , 1, false);
duke@435	298	def(_lconst_0 , "lconst_0" , "b" , NULL , T_LONG , 2, false);
duke@435	299	def(_lconst_1 , "lconst_1" , "b" , NULL , T_LONG , 2, false);
duke@435	300	def(_fconst_0 , "fconst_0" , "b" , NULL , T_FLOAT , 1, false);
duke@435	301	def(_fconst_1 , "fconst_1" , "b" , NULL , T_FLOAT , 1, false);
duke@435	302	def(_fconst_2 , "fconst_2" , "b" , NULL , T_FLOAT , 1, false);
duke@435	303	def(_dconst_0 , "dconst_0" , "b" , NULL , T_DOUBLE , 2, false);
duke@435	304	def(_dconst_1 , "dconst_1" , "b" , NULL , T_DOUBLE , 2, false);
duke@435	305	def(_bipush , "bipush" , "bc" , NULL , T_INT , 1, false);
duke@435	306	def(_sipush , "sipush" , "bcc" , NULL , T_INT , 1, false);
jrose@1920	307	def(_ldc , "ldc" , "bk" , NULL , T_ILLEGAL, 1, true );
jrose@1920	308	def(_ldc_w , "ldc_w" , "bkk" , NULL , T_ILLEGAL, 1, true );
jrose@1920	309	def(_ldc2_w , "ldc2_w" , "bkk" , NULL , T_ILLEGAL, 2, true );
duke@435	310	def(_iload , "iload" , "bi" , "wbii" , T_INT , 1, false);
duke@435	311	def(_lload , "lload" , "bi" , "wbii" , T_LONG , 2, false);
duke@435	312	def(_fload , "fload" , "bi" , "wbii" , T_FLOAT , 1, false);
duke@435	313	def(_dload , "dload" , "bi" , "wbii" , T_DOUBLE , 2, false);
duke@435	314	def(_aload , "aload" , "bi" , "wbii" , T_OBJECT , 1, false);
duke@435	315	def(_iload_0 , "iload_0" , "b" , NULL , T_INT , 1, false);
duke@435	316	def(_iload_1 , "iload_1" , "b" , NULL , T_INT , 1, false);
duke@435	317	def(_iload_2 , "iload_2" , "b" , NULL , T_INT , 1, false);
duke@435	318	def(_iload_3 , "iload_3" , "b" , NULL , T_INT , 1, false);
duke@435	319	def(_lload_0 , "lload_0" , "b" , NULL , T_LONG , 2, false);
duke@435	320	def(_lload_1 , "lload_1" , "b" , NULL , T_LONG , 2, false);
duke@435	321	def(_lload_2 , "lload_2" , "b" , NULL , T_LONG , 2, false);
duke@435	322	def(_lload_3 , "lload_3" , "b" , NULL , T_LONG , 2, false);
duke@435	323	def(_fload_0 , "fload_0" , "b" , NULL , T_FLOAT , 1, false);
duke@435	324	def(_fload_1 , "fload_1" , "b" , NULL , T_FLOAT , 1, false);
duke@435	325	def(_fload_2 , "fload_2" , "b" , NULL , T_FLOAT , 1, false);
duke@435	326	def(_fload_3 , "fload_3" , "b" , NULL , T_FLOAT , 1, false);
duke@435	327	def(_dload_0 , "dload_0" , "b" , NULL , T_DOUBLE , 2, false);
duke@435	328	def(_dload_1 , "dload_1" , "b" , NULL , T_DOUBLE , 2, false);
duke@435	329	def(_dload_2 , "dload_2" , "b" , NULL , T_DOUBLE , 2, false);
duke@435	330	def(_dload_3 , "dload_3" , "b" , NULL , T_DOUBLE , 2, false);
duke@435	331	def(_aload_0 , "aload_0" , "b" , NULL , T_OBJECT , 1, true ); // rewriting in interpreter
duke@435	332	def(_aload_1 , "aload_1" , "b" , NULL , T_OBJECT , 1, false);
duke@435	333	def(_aload_2 , "aload_2" , "b" , NULL , T_OBJECT , 1, false);
duke@435	334	def(_aload_3 , "aload_3" , "b" , NULL , T_OBJECT , 1, false);
duke@435	335	def(_iaload , "iaload" , "b" , NULL , T_INT , -1, true );
duke@435	336	def(_laload , "laload" , "b" , NULL , T_LONG , 0, true );
duke@435	337	def(_faload , "faload" , "b" , NULL , T_FLOAT , -1, true );
duke@435	338	def(_daload , "daload" , "b" , NULL , T_DOUBLE , 0, true );
duke@435	339	def(_aaload , "aaload" , "b" , NULL , T_OBJECT , -1, true );
duke@435	340	def(_baload , "baload" , "b" , NULL , T_INT , -1, true );
duke@435	341	def(_caload , "caload" , "b" , NULL , T_INT , -1, true );
duke@435	342	def(_saload , "saload" , "b" , NULL , T_INT , -1, true );
duke@435	343	def(_istore , "istore" , "bi" , "wbii" , T_VOID , -1, false);
duke@435	344	def(_lstore , "lstore" , "bi" , "wbii" , T_VOID , -2, false);
duke@435	345	def(_fstore , "fstore" , "bi" , "wbii" , T_VOID , -1, false);
duke@435	346	def(_dstore , "dstore" , "bi" , "wbii" , T_VOID , -2, false);
duke@435	347	def(_astore , "astore" , "bi" , "wbii" , T_VOID , -1, false);
duke@435	348	def(_istore_0 , "istore_0" , "b" , NULL , T_VOID , -1, false);
duke@435	349	def(_istore_1 , "istore_1" , "b" , NULL , T_VOID , -1, false);
duke@435	350	def(_istore_2 , "istore_2" , "b" , NULL , T_VOID , -1, false);
duke@435	351	def(_istore_3 , "istore_3" , "b" , NULL , T_VOID , -1, false);
duke@435	352	def(_lstore_0 , "lstore_0" , "b" , NULL , T_VOID , -2, false);
duke@435	353	def(_lstore_1 , "lstore_1" , "b" , NULL , T_VOID , -2, false);
duke@435	354	def(_lstore_2 , "lstore_2" , "b" , NULL , T_VOID , -2, false);
duke@435	355	def(_lstore_3 , "lstore_3" , "b" , NULL , T_VOID , -2, false);
duke@435	356	def(_fstore_0 , "fstore_0" , "b" , NULL , T_VOID , -1, false);
duke@435	357	def(_fstore_1 , "fstore_1" , "b" , NULL , T_VOID , -1, false);
duke@435	358	def(_fstore_2 , "fstore_2" , "b" , NULL , T_VOID , -1, false);
duke@435	359	def(_fstore_3 , "fstore_3" , "b" , NULL , T_VOID , -1, false);
duke@435	360	def(_dstore_0 , "dstore_0" , "b" , NULL , T_VOID , -2, false);
duke@435	361	def(_dstore_1 , "dstore_1" , "b" , NULL , T_VOID , -2, false);
duke@435	362	def(_dstore_2 , "dstore_2" , "b" , NULL , T_VOID , -2, false);
duke@435	363	def(_dstore_3 , "dstore_3" , "b" , NULL , T_VOID , -2, false);
duke@435	364	def(_astore_0 , "astore_0" , "b" , NULL , T_VOID , -1, false);
duke@435	365	def(_astore_1 , "astore_1" , "b" , NULL , T_VOID , -1, false);
duke@435	366	def(_astore_2 , "astore_2" , "b" , NULL , T_VOID , -1, false);
duke@435	367	def(_astore_3 , "astore_3" , "b" , NULL , T_VOID , -1, false);
duke@435	368	def(_iastore , "iastore" , "b" , NULL , T_VOID , -3, true );
duke@435	369	def(_lastore , "lastore" , "b" , NULL , T_VOID , -4, true );
duke@435	370	def(_fastore , "fastore" , "b" , NULL , T_VOID , -3, true );
duke@435	371	def(_dastore , "dastore" , "b" , NULL , T_VOID , -4, true );
duke@435	372	def(_aastore , "aastore" , "b" , NULL , T_VOID , -3, true );
duke@435	373	def(_bastore , "bastore" , "b" , NULL , T_VOID , -3, true );
duke@435	374	def(_castore , "castore" , "b" , NULL , T_VOID , -3, true );
duke@435	375	def(_sastore , "sastore" , "b" , NULL , T_VOID , -3, true );
duke@435	376	def(_pop , "pop" , "b" , NULL , T_VOID , -1, false);
duke@435	377	def(_pop2 , "pop2" , "b" , NULL , T_VOID , -2, false);
duke@435	378	def(_dup , "dup" , "b" , NULL , T_VOID , 1, false);
duke@435	379	def(_dup_x1 , "dup_x1" , "b" , NULL , T_VOID , 1, false);
duke@435	380	def(_dup_x2 , "dup_x2" , "b" , NULL , T_VOID , 1, false);
duke@435	381	def(_dup2 , "dup2" , "b" , NULL , T_VOID , 2, false);
duke@435	382	def(_dup2_x1 , "dup2_x1" , "b" , NULL , T_VOID , 2, false);
duke@435	383	def(_dup2_x2 , "dup2_x2" , "b" , NULL , T_VOID , 2, false);
duke@435	384	def(_swap , "swap" , "b" , NULL , T_VOID , 0, false);
duke@435	385	def(_iadd , "iadd" , "b" , NULL , T_INT , -1, false);
duke@435	386	def(_ladd , "ladd" , "b" , NULL , T_LONG , -2, false);
duke@435	387	def(_fadd , "fadd" , "b" , NULL , T_FLOAT , -1, false);
duke@435	388	def(_dadd , "dadd" , "b" , NULL , T_DOUBLE , -2, false);
duke@435	389	def(_isub , "isub" , "b" , NULL , T_INT , -1, false);
duke@435	390	def(_lsub , "lsub" , "b" , NULL , T_LONG , -2, false);
duke@435	391	def(_fsub , "fsub" , "b" , NULL , T_FLOAT , -1, false);
duke@435	392	def(_dsub , "dsub" , "b" , NULL , T_DOUBLE , -2, false);
duke@435	393	def(_imul , "imul" , "b" , NULL , T_INT , -1, false);
duke@435	394	def(_lmul , "lmul" , "b" , NULL , T_LONG , -2, false);
duke@435	395	def(_fmul , "fmul" , "b" , NULL , T_FLOAT , -1, false);
duke@435	396	def(_dmul , "dmul" , "b" , NULL , T_DOUBLE , -2, false);
duke@435	397	def(_idiv , "idiv" , "b" , NULL , T_INT , -1, true );
duke@435	398	def(_ldiv , "ldiv" , "b" , NULL , T_LONG , -2, true );
duke@435	399	def(_fdiv , "fdiv" , "b" , NULL , T_FLOAT , -1, false);
duke@435	400	def(_ddiv , "ddiv" , "b" , NULL , T_DOUBLE , -2, false);
duke@435	401	def(_irem , "irem" , "b" , NULL , T_INT , -1, true );
duke@435	402	def(_lrem , "lrem" , "b" , NULL , T_LONG , -2, true );
duke@435	403	def(_frem , "frem" , "b" , NULL , T_FLOAT , -1, false);
duke@435	404	def(_drem , "drem" , "b" , NULL , T_DOUBLE , -2, false);
duke@435	405	def(_ineg , "ineg" , "b" , NULL , T_INT , 0, false);
duke@435	406	def(_lneg , "lneg" , "b" , NULL , T_LONG , 0, false);
duke@435	407	def(_fneg , "fneg" , "b" , NULL , T_FLOAT , 0, false);
duke@435	408	def(_dneg , "dneg" , "b" , NULL , T_DOUBLE , 0, false);
duke@435	409	def(_ishl , "ishl" , "b" , NULL , T_INT , -1, false);
duke@435	410	def(_lshl , "lshl" , "b" , NULL , T_LONG , -1, false);
duke@435	411	def(_ishr , "ishr" , "b" , NULL , T_INT , -1, false);
duke@435	412	def(_lshr , "lshr" , "b" , NULL , T_LONG , -1, false);
duke@435	413	def(_iushr , "iushr" , "b" , NULL , T_INT , -1, false);
duke@435	414	def(_lushr , "lushr" , "b" , NULL , T_LONG , -1, false);
duke@435	415	def(_iand , "iand" , "b" , NULL , T_INT , -1, false);
duke@435	416	def(_land , "land" , "b" , NULL , T_LONG , -2, false);
duke@435	417	def(_ior , "ior" , "b" , NULL , T_INT , -1, false);
duke@435	418	def(_lor , "lor" , "b" , NULL , T_LONG , -2, false);
duke@435	419	def(_ixor , "ixor" , "b" , NULL , T_INT , -1, false);
duke@435	420	def(_lxor , "lxor" , "b" , NULL , T_LONG , -2, false);
duke@435	421	def(_iinc , "iinc" , "bic" , "wbiicc", T_VOID , 0, false);
duke@435	422	def(_i2l , "i2l" , "b" , NULL , T_LONG , 1, false);
duke@435	423	def(_i2f , "i2f" , "b" , NULL , T_FLOAT , 0, false);
duke@435	424	def(_i2d , "i2d" , "b" , NULL , T_DOUBLE , 1, false);
duke@435	425	def(_l2i , "l2i" , "b" , NULL , T_INT , -1, false);
duke@435	426	def(_l2f , "l2f" , "b" , NULL , T_FLOAT , -1, false);
duke@435	427	def(_l2d , "l2d" , "b" , NULL , T_DOUBLE , 0, false);
duke@435	428	def(_f2i , "f2i" , "b" , NULL , T_INT , 0, false);
duke@435	429	def(_f2l , "f2l" , "b" , NULL , T_LONG , 1, false);
duke@435	430	def(_f2d , "f2d" , "b" , NULL , T_DOUBLE , 1, false);
duke@435	431	def(_d2i , "d2i" , "b" , NULL , T_INT , -1, false);
duke@435	432	def(_d2l , "d2l" , "b" , NULL , T_LONG , 0, false);
duke@435	433	def(_d2f , "d2f" , "b" , NULL , T_FLOAT , -1, false);
duke@435	434	def(_i2b , "i2b" , "b" , NULL , T_BYTE , 0, false);
duke@435	435	def(_i2c , "i2c" , "b" , NULL , T_CHAR , 0, false);
duke@435	436	def(_i2s , "i2s" , "b" , NULL , T_SHORT , 0, false);
duke@435	437	def(_lcmp , "lcmp" , "b" , NULL , T_VOID , -3, false);
duke@435	438	def(_fcmpl , "fcmpl" , "b" , NULL , T_VOID , -1, false);
duke@435	439	def(_fcmpg , "fcmpg" , "b" , NULL , T_VOID , -1, false);
duke@435	440	def(_dcmpl , "dcmpl" , "b" , NULL , T_VOID , -3, false);
duke@435	441	def(_dcmpg , "dcmpg" , "b" , NULL , T_VOID , -3, false);
duke@435	442	def(_ifeq , "ifeq" , "boo" , NULL , T_VOID , -1, false);
duke@435	443	def(_ifne , "ifne" , "boo" , NULL , T_VOID , -1, false);
duke@435	444	def(_iflt , "iflt" , "boo" , NULL , T_VOID , -1, false);
duke@435	445	def(_ifge , "ifge" , "boo" , NULL , T_VOID , -1, false);
duke@435	446	def(_ifgt , "ifgt" , "boo" , NULL , T_VOID , -1, false);
duke@435	447	def(_ifle , "ifle" , "boo" , NULL , T_VOID , -1, false);
duke@435	448	def(_if_icmpeq , "if_icmpeq" , "boo" , NULL , T_VOID , -2, false);
duke@435	449	def(_if_icmpne , "if_icmpne" , "boo" , NULL , T_VOID , -2, false);
duke@435	450	def(_if_icmplt , "if_icmplt" , "boo" , NULL , T_VOID , -2, false);
duke@435	451	def(_if_icmpge , "if_icmpge" , "boo" , NULL , T_VOID , -2, false);
duke@435	452	def(_if_icmpgt , "if_icmpgt" , "boo" , NULL , T_VOID , -2, false);
duke@435	453	def(_if_icmple , "if_icmple" , "boo" , NULL , T_VOID , -2, false);
duke@435	454	def(_if_acmpeq , "if_acmpeq" , "boo" , NULL , T_VOID , -2, false);
duke@435	455	def(_if_acmpne , "if_acmpne" , "boo" , NULL , T_VOID , -2, false);
duke@435	456	def(_goto , "goto" , "boo" , NULL , T_VOID , 0, false);
duke@435	457	def(_jsr , "jsr" , "boo" , NULL , T_INT , 0, false);
duke@435	458	def(_ret , "ret" , "bi" , "wbii" , T_VOID , 0, false);
duke@435	459	def(_tableswitch , "tableswitch" , "" , NULL , T_VOID , -1, false); // may have backward branches
duke@435	460	def(_lookupswitch , "lookupswitch" , "" , NULL , T_VOID , -1, false); // rewriting in interpreter
duke@435	461	def(_ireturn , "ireturn" , "b" , NULL , T_INT , -1, true);
duke@435	462	def(_lreturn , "lreturn" , "b" , NULL , T_LONG , -2, true);
duke@435	463	def(_freturn , "freturn" , "b" , NULL , T_FLOAT , -1, true);
duke@435	464	def(_dreturn , "dreturn" , "b" , NULL , T_DOUBLE , -2, true);
duke@435	465	def(_areturn , "areturn" , "b" , NULL , T_OBJECT , -1, true);
duke@435	466	def(_return , "return" , "b" , NULL , T_VOID , 0, true);
jrose@1920	467	def(_getstatic , "getstatic" , "bJJ" , NULL , T_ILLEGAL, 1, true );
jrose@1920	468	def(_putstatic , "putstatic" , "bJJ" , NULL , T_ILLEGAL, -1, true );
jrose@1920	469	def(_getfield , "getfield" , "bJJ" , NULL , T_ILLEGAL, 0, true );
jrose@1920	470	def(_putfield , "putfield" , "bJJ" , NULL , T_ILLEGAL, -2, true );
jrose@1920	471	def(_invokevirtual , "invokevirtual" , "bJJ" , NULL , T_ILLEGAL, -1, true);
jrose@1920	472	def(_invokespecial , "invokespecial" , "bJJ" , NULL , T_ILLEGAL, -1, true);
jrose@1920	473	def(_invokestatic , "invokestatic" , "bJJ" , NULL , T_ILLEGAL, 0, true);
jrose@1920	474	def(_invokeinterface , "invokeinterface" , "bJJ__", NULL , T_ILLEGAL, -1, true);
jrose@1920	475	def(_invokedynamic , "invokedynamic" , "bJJJJ", NULL , T_ILLEGAL, 0, true );
jrose@1920	476	def(_new , "new" , "bkk" , NULL , T_OBJECT , 1, true );
duke@435	477	def(_newarray , "newarray" , "bc" , NULL , T_OBJECT , 0, true );
jrose@1920	478	def(_anewarray , "anewarray" , "bkk" , NULL , T_OBJECT , 0, true );
duke@435	479	def(_arraylength , "arraylength" , "b" , NULL , T_VOID , 0, true );
duke@435	480	def(_athrow , "athrow" , "b" , NULL , T_VOID , -1, true );
jrose@1920	481	def(_checkcast , "checkcast" , "bkk" , NULL , T_OBJECT , 0, true );
jrose@1920	482	def(_instanceof , "instanceof" , "bkk" , NULL , T_INT , 0, true );
duke@435	483	def(_monitorenter , "monitorenter" , "b" , NULL , T_VOID , -1, true );
duke@435	484	def(_monitorexit , "monitorexit" , "b" , NULL , T_VOID , -1, true );
duke@435	485	def(_wide , "wide" , "" , NULL , T_VOID , 0, false);
jrose@1920	486	def(_multianewarray , "multianewarray" , "bkkc" , NULL , T_OBJECT , 1, true );
duke@435	487	def(_ifnull , "ifnull" , "boo" , NULL , T_VOID , -1, false);
duke@435	488	def(_ifnonnull , "ifnonnull" , "boo" , NULL , T_VOID , -1, false);
duke@435	489	def(_goto_w , "goto_w" , "boooo", NULL , T_VOID , 0, false);
duke@435	490	def(_jsr_w , "jsr_w" , "boooo", NULL , T_INT , 0, false);
duke@435	491	def(_breakpoint , "breakpoint" , "" , NULL , T_VOID , 0, true);
duke@435	492
duke@435	493	// JVM bytecodes
duke@435	494	// bytecode bytecode name format wide f. result tp stk traps std code
duke@435	495
jrose@1920	496	def(_fast_agetfield , "fast_agetfield" , "bJJ" , NULL , T_OBJECT , 0, true , _getfield );
jrose@1920	497	def(_fast_bgetfield , "fast_bgetfield" , "bJJ" , NULL , T_INT , 0, true , _getfield );
jrose@1920	498	def(_fast_cgetfield , "fast_cgetfield" , "bJJ" , NULL , T_CHAR , 0, true , _getfield );
jrose@1920	499	def(_fast_dgetfield , "fast_dgetfield" , "bJJ" , NULL , T_DOUBLE , 0, true , _getfield );
jrose@1920	500	def(_fast_fgetfield , "fast_fgetfield" , "bJJ" , NULL , T_FLOAT , 0, true , _getfield );
jrose@1920	501	def(_fast_igetfield , "fast_igetfield" , "bJJ" , NULL , T_INT , 0, true , _getfield );
jrose@1920	502	def(_fast_lgetfield , "fast_lgetfield" , "bJJ" , NULL , T_LONG , 0, true , _getfield );
jrose@1920	503	def(_fast_sgetfield , "fast_sgetfield" , "bJJ" , NULL , T_SHORT , 0, true , _getfield );
duke@435	504
jrose@1920	505	def(_fast_aputfield , "fast_aputfield" , "bJJ" , NULL , T_OBJECT , 0, true , _putfield );
jrose@1920	506	def(_fast_bputfield , "fast_bputfield" , "bJJ" , NULL , T_INT , 0, true , _putfield );
jrose@1920	507	def(_fast_cputfield , "fast_cputfield" , "bJJ" , NULL , T_CHAR , 0, true , _putfield );
jrose@1920	508	def(_fast_dputfield , "fast_dputfield" , "bJJ" , NULL , T_DOUBLE , 0, true , _putfield );
jrose@1920	509	def(_fast_fputfield , "fast_fputfield" , "bJJ" , NULL , T_FLOAT , 0, true , _putfield );
jrose@1920	510	def(_fast_iputfield , "fast_iputfield" , "bJJ" , NULL , T_INT , 0, true , _putfield );
jrose@1920	511	def(_fast_lputfield , "fast_lputfield" , "bJJ" , NULL , T_LONG , 0, true , _putfield );
jrose@1920	512	def(_fast_sputfield , "fast_sputfield" , "bJJ" , NULL , T_SHORT , 0, true , _putfield );
duke@435	513
duke@435	514	def(_fast_aload_0 , "fast_aload_0" , "b" , NULL , T_OBJECT , 1, true , _aload_0 );
jrose@1920	515	def(_fast_iaccess_0 , "fast_iaccess_0" , "b_JJ" , NULL , T_INT , 1, true , _aload_0 );
jrose@1920	516	def(_fast_aaccess_0 , "fast_aaccess_0" , "b_JJ" , NULL , T_OBJECT , 1, true , _aload_0 );
jrose@1920	517	def(_fast_faccess_0 , "fast_faccess_0" , "b_JJ" , NULL , T_OBJECT , 1, true , _aload_0 );
duke@435	518
duke@435	519	def(_fast_iload , "fast_iload" , "bi" , NULL , T_INT , 1, false, _iload);
duke@435	520	def(_fast_iload2 , "fast_iload2" , "bi_i" , NULL , T_INT , 2, false, _iload);
duke@435	521	def(_fast_icaload , "fast_icaload" , "bi_" , NULL , T_INT , 0, false, _iload);
duke@435	522
duke@435	523	// Faster method invocation.
jrose@1920	524	def(_fast_invokevfinal , "fast_invokevfinal" , "bJJ" , NULL , T_ILLEGAL, -1, true, _invokevirtual );
duke@435	525
duke@435	526	def(_fast_linearswitch , "fast_linearswitch" , "" , NULL , T_VOID , -1, false, _lookupswitch );
duke@435	527	def(_fast_binaryswitch , "fast_binaryswitch" , "" , NULL , T_VOID , -1, false, _lookupswitch );
duke@435	528
duke@435	529	def(_return_register_finalizer , "return_register_finalizer" , "b" , NULL , T_VOID , 0, true, _return);
duke@435	530
jrose@1957	531	def(_fast_aldc , "fast_aldc" , "bj" , NULL , T_OBJECT, 1, true, _ldc );
jrose@1957	532	def(_fast_aldc_w , "fast_aldc_w" , "bJJ" , NULL , T_OBJECT, 1, true, _ldc_w );
jrose@1957	533
duke@435	534	def(_shouldnotreachhere , "_shouldnotreachhere" , "b" , NULL , T_VOID , 0, false);
duke@435	535
duke@435	536	// platform specific JVM bytecodes
duke@435	537	pd_initialize();
duke@435	538
duke@435	539	// compare can_trap information for each bytecode with the
duke@435	540	// can_trap information for the corresponding base bytecode
duke@435	541	// (if a rewritten bytecode can trap, so must the base bytecode)
duke@435	542	#ifdef ASSERT
duke@435	543	{ for (int i = 0; i < number_of_codes; i++) {
duke@435	544	if (is_defined(i)) {
duke@435	545	Code code = cast(i);
duke@435	546	Code java = java_code(code);
jcoomes@1845	547	if (can_trap(code) && !can_trap(java))
jcoomes@1845	548	fatal(err_msg("%s can trap => %s can trap, too", name(code),
jcoomes@1845	549	name(java)));
duke@435	550	}
duke@435	551	}
duke@435	552	}
duke@435	553	#endif
duke@435	554
duke@435	555	// initialization successful
duke@435	556	_is_initialized = true;
duke@435	557	}
duke@435	558
duke@435	559
duke@435	560	void bytecodes_init() {
duke@435	561	Bytecodes::initialize();
duke@435	562	}
duke@435	563
duke@435	564	// Restore optimization
duke@435	565	#ifdef _M_AMD64
duke@435	566	#pragma optimize ("", on)
duke@435	567	#endif