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/*
* Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#include "precompiled.hpp"
#include "interpreter/bytecodes.hpp"
#include "memory/resourceArea.hpp"
#include "oops/methodOop.hpp"
#ifdef TARGET_ARCH_x86
# include "bytes_x86.hpp"
#endif
#ifdef TARGET_ARCH_sparc
# include "bytes_sparc.hpp"
#endif
#ifdef TARGET_ARCH_zero
# include "bytes_zero.hpp"
#endif
#ifdef TARGET_ARCH_arm
# include "bytes_arm.hpp"
#endif
#ifdef TARGET_ARCH_ppc
# include "bytes_ppc.hpp"
#endif
#if defined(WIN32) && (defined(_MSC_VER) && (_MSC_VER < 1600))
// Windows AMD64 Compiler Hangs compiling this file
// unless optimization is off
#ifdef _M_AMD64
#pragma optimize ("", off)
#endif
#endif
bool Bytecodes::_is_initialized = false;
const char* Bytecodes::_name [Bytecodes::number_of_codes];
BasicType Bytecodes::_result_type [Bytecodes::number_of_codes];
s_char Bytecodes::_depth [Bytecodes::number_of_codes];
u_char Bytecodes::_lengths [Bytecodes::number_of_codes];
Bytecodes::Code Bytecodes::_java_code [Bytecodes::number_of_codes];
u_short Bytecodes::_flags [(1<<BitsPerByte)*2];
#ifdef ASSERT
bool Bytecodes::check_method(const methodOopDesc* method, address bcp) {
return method->contains(bcp);
}
#endif
bool Bytecodes::check_must_rewrite(Bytecodes::Code code) {
assert(can_rewrite(code), "post-check only");
// Some codes are conditionally rewriting. Look closely at them.
switch (code) {
case Bytecodes::_aload_0:
// Even if RewriteFrequentPairs is turned on,
// the _aload_0 code might delay its rewrite until
// a following _getfield rewrites itself.
return false;
case Bytecodes::_lookupswitch:
return false; // the rewrite is not done by the interpreter
case Bytecodes::_new:
// (Could actually look at the class here, but the profit would be small.)
return false; // the rewrite is not always done
}
// No other special cases.
return true;
}
Bytecodes::Code Bytecodes::code_at(methodOop method, int bci) {
return code_at(method, method->bcp_from(bci));
}
Bytecodes::Code Bytecodes::non_breakpoint_code_at(const methodOopDesc* method, address bcp) {
assert(method != NULL, "must have the method for breakpoint conversion");
assert(method->contains(bcp), "must be valid bcp in method");
return method->orig_bytecode_at(method->bci_from(bcp));
}
int Bytecodes::special_length_at(Bytecodes::Code code, address bcp, address end) {
switch (code) {
case _wide:
if (end != NULL && bcp + 1 >= end) {
return -1; // don't read past end of code buffer
}
return wide_length_for(cast(*(bcp + 1)));
case _tableswitch:
{ address aligned_bcp = (address)round_to((intptr_t)bcp + 1, jintSize);
if (end != NULL && aligned_bcp + 3*jintSize >= end) {
return -1; // don't read past end of code buffer
}
jlong lo = (jint)Bytes::get_Java_u4(aligned_bcp + 1*jintSize);
jlong hi = (jint)Bytes::get_Java_u4(aligned_bcp + 2*jintSize);
jlong len = (aligned_bcp - bcp) + (3 + hi - lo + 1)*jintSize;
// only return len if it can be represented as a positive int;
// return -1 otherwise
return (len > 0 && len == (int)len) ? len : -1;
}
case _lookupswitch: // fall through
case _fast_binaryswitch: // fall through
case _fast_linearswitch:
{ address aligned_bcp = (address)round_to((intptr_t)bcp + 1, jintSize);
if (end != NULL && aligned_bcp + 2*jintSize >= end) {
return -1; // don't read past end of code buffer
}
jlong npairs = (jint)Bytes::get_Java_u4(aligned_bcp + jintSize);
jlong len = (aligned_bcp - bcp) + (2 + 2*npairs)*jintSize;
// only return len if it can be represented as a positive int;
// return -1 otherwise
return (len > 0 && len == (int)len) ? len : -1;
}
}
// Note: Length functions must return <=0 for invalid bytecodes.
return 0;
}
// At a breakpoint instruction, this returns the breakpoint's length,
// otherwise, it's the same as special_length_at(). This is used by
// the RawByteCodeStream, which wants to see the actual bytecode
// values (including breakpoint). RawByteCodeStream is used by the
// verifier when reading in bytecode to verify. Other mechanisms that
// run at runtime (such as generateOopMaps) need to iterate over the code
// and don't expect to see breakpoints: they want to see the instruction
// which was replaced so that they can get the correct length and find
// the next bytecode.
//
// 'end' indicates the end of the code buffer, which we should not try to read
// past.
int Bytecodes::raw_special_length_at(address bcp, address end) {
Code code = code_or_bp_at(bcp);
if (code == _breakpoint) {
return 1;
} else {
return special_length_at(code, bcp, end);
}
}
void Bytecodes::def(Code code, const char* name, const char* format, const char* wide_format, BasicType result_type, int depth, bool can_trap) {
def(code, name, format, wide_format, result_type, depth, can_trap, code);
}
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) {
assert(wide_format == NULL || format != NULL, "short form must exist if there's a wide form");
int len = (format != NULL ? (int) strlen(format) : 0);
int wlen = (wide_format != NULL ? (int) strlen(wide_format) : 0);
_name [code] = name;
_result_type [code] = result_type;
_depth [code] = depth;
_lengths [code] = (wlen << 4) | (len & 0xF);
_java_code [code] = java_code;
int bc_flags = 0;
if (can_trap) bc_flags |= _bc_can_trap;
if (java_code != code) bc_flags |= _bc_can_rewrite;
_flags[(u1)code+0*(1<<BitsPerByte)] = compute_flags(format, bc_flags);
_flags[(u1)code+1*(1<<BitsPerByte)] = compute_flags(wide_format, bc_flags);
assert(is_defined(code) == (format != NULL), "");
assert(wide_is_defined(code) == (wide_format != NULL), "");
assert(length_for(code) == len, "");
assert(wide_length_for(code) == wlen, "");
}
// Format strings interpretation:
//
// b: bytecode
// c: signed constant, Java byte-ordering
// i: unsigned local index, Java byte-ordering (I = native byte ordering)
// j: unsigned CP cache index, Java byte-ordering (J = native byte ordering)
// k: unsigned CP index, Java byte-ordering
// o: branch offset, Java byte-ordering
// _: unused/ignored
// w: wide bytecode
//
// Note: The format strings are used for 2 purposes:
// 1. to specify the length of the bytecode
// (= number of characters in format string)
// 2. to derive bytecode format flags (_fmt_has_k, etc.)
//
// Note: For bytecodes with variable length, the format string is the empty string.
int Bytecodes::compute_flags(const char* format, int more_flags) {
if (format == NULL) return 0; // not even more_flags
int flags = more_flags;
const char* fp = format;
switch (*fp) {
case '\0':
flags |= _fmt_not_simple; // but variable
break;
case 'b':
flags |= _fmt_not_variable; // but simple
++fp; // skip 'b'
break;
case 'w':
flags |= _fmt_not_variable | _fmt_not_simple;
++fp; // skip 'w'
guarantee(*fp == 'b', "wide format must start with 'wb'");
++fp; // skip 'b'
break;
}
int has_nbo = 0, has_jbo = 0, has_size = 0;
for (;;) {
int this_flag = 0;
char fc = *fp++;
switch (fc) {
case '\0': // end of string
assert(flags == (jchar)flags, "change _format_flags");
return flags;
case '_': continue; // ignore these
case 'j': this_flag = _fmt_has_j; has_jbo = 1; break;
case 'k': this_flag = _fmt_has_k; has_jbo = 1; break;
case 'i': this_flag = _fmt_has_i; has_jbo = 1; break;
case 'c': this_flag = _fmt_has_c; has_jbo = 1; break;
case 'o': this_flag = _fmt_has_o; has_jbo = 1; break;
// uppercase versions mark native byte order (from Rewriter)
// actually, only the 'J' case happens currently
case 'J': this_flag = _fmt_has_j; has_nbo = 1; break;
case 'K': this_flag = _fmt_has_k; has_nbo = 1; break;
case 'I': this_flag = _fmt_has_i; has_nbo = 1; break;
case 'C': this_flag = _fmt_has_c; has_nbo = 1; break;
case 'O': this_flag = _fmt_has_o; has_nbo = 1; break;
default: guarantee(false, "bad char in format");
}
flags |= this_flag;
guarantee(!(has_jbo && has_nbo), "mixed byte orders in format");
if (has_nbo)
flags |= _fmt_has_nbo;
int this_size = 1;
if (*fp == fc) {
// advance beyond run of the same characters
this_size = 2;
while (*++fp == fc) this_size++;
switch (this_size) {
case 2: flags |= _fmt_has_u2; break;
case 4: flags |= _fmt_has_u4; break;
default: guarantee(false, "bad rep count in format");
}
}
guarantee(has_size == 0 || // no field yet
this_size == has_size || // same size
this_size < has_size && *fp == '\0', // last field can be short
"mixed field sizes in format");
has_size = this_size;
}
}
void Bytecodes::initialize() {
if (_is_initialized) return;
assert(number_of_codes <= 256, "too many bytecodes");
// initialize bytecode tables - didn't use static array initializers
// (such as {}) so we can do additional consistency checks and init-
// code is independent of actual bytecode numbering.
//
// Note 1: NULL for the format string means the bytecode doesn't exist
// in that form.
//
// Note 2: The result type is T_ILLEGAL for bytecodes where the top of stack
// type after execution is not only determined by the bytecode itself.
// Java bytecodes
// bytecode bytecode name format wide f. result tp stk traps
def(_nop , "nop" , "b" , NULL , T_VOID , 0, false);
def(_aconst_null , "aconst_null" , "b" , NULL , T_OBJECT , 1, false);
def(_iconst_m1 , "iconst_m1" , "b" , NULL , T_INT , 1, false);
def(_iconst_0 , "iconst_0" , "b" , NULL , T_INT , 1, false);
def(_iconst_1 , "iconst_1" , "b" , NULL , T_INT , 1, false);
def(_iconst_2 , "iconst_2" , "b" , NULL , T_INT , 1, false);
def(_iconst_3 , "iconst_3" , "b" , NULL , T_INT , 1, false);
def(_iconst_4 , "iconst_4" , "b" , NULL , T_INT , 1, false);
def(_iconst_5 , "iconst_5" , "b" , NULL , T_INT , 1, false);
def(_lconst_0 , "lconst_0" , "b" , NULL , T_LONG , 2, false);
def(_lconst_1 , "lconst_1" , "b" , NULL , T_LONG , 2, false);
def(_fconst_0 , "fconst_0" , "b" , NULL , T_FLOAT , 1, false);
def(_fconst_1 , "fconst_1" , "b" , NULL , T_FLOAT , 1, false);
def(_fconst_2 , "fconst_2" , "b" , NULL , T_FLOAT , 1, false);
def(_dconst_0 , "dconst_0" , "b" , NULL , T_DOUBLE , 2, false);
def(_dconst_1 , "dconst_1" , "b" , NULL , T_DOUBLE , 2, false);
def(_bipush , "bipush" , "bc" , NULL , T_INT , 1, false);
def(_sipush , "sipush" , "bcc" , NULL , T_INT , 1, false);
def(_ldc , "ldc" , "bk" , NULL , T_ILLEGAL, 1, true );
def(_ldc_w , "ldc_w" , "bkk" , NULL , T_ILLEGAL, 1, true );
def(_ldc2_w , "ldc2_w" , "bkk" , NULL , T_ILLEGAL, 2, true );
def(_iload , "iload" , "bi" , "wbii" , T_INT , 1, false);
def(_lload , "lload" , "bi" , "wbii" , T_LONG , 2, false);
def(_fload , "fload" , "bi" , "wbii" , T_FLOAT , 1, false);
def(_dload , "dload" , "bi" , "wbii" , T_DOUBLE , 2, false);
def(_aload , "aload" , "bi" , "wbii" , T_OBJECT , 1, false);
def(_iload_0 , "iload_0" , "b" , NULL , T_INT , 1, false);
def(_iload_1 , "iload_1" , "b" , NULL , T_INT , 1, false);
def(_iload_2 , "iload_2" , "b" , NULL , T_INT , 1, false);
def(_iload_3 , "iload_3" , "b" , NULL , T_INT , 1, false);
def(_lload_0 , "lload_0" , "b" , NULL , T_LONG , 2, false);
def(_lload_1 , "lload_1" , "b" , NULL , T_LONG , 2, false);
def(_lload_2 , "lload_2" , "b" , NULL , T_LONG , 2, false);
def(_lload_3 , "lload_3" , "b" , NULL , T_LONG , 2, false);
def(_fload_0 , "fload_0" , "b" , NULL , T_FLOAT , 1, false);
def(_fload_1 , "fload_1" , "b" , NULL , T_FLOAT , 1, false);
def(_fload_2 , "fload_2" , "b" , NULL , T_FLOAT , 1, false);
def(_fload_3 , "fload_3" , "b" , NULL , T_FLOAT , 1, false);
def(_dload_0 , "dload_0" , "b" , NULL , T_DOUBLE , 2, false);
def(_dload_1 , "dload_1" , "b" , NULL , T_DOUBLE , 2, false);
def(_dload_2 , "dload_2" , "b" , NULL , T_DOUBLE , 2, false);
def(_dload_3 , "dload_3" , "b" , NULL , T_DOUBLE , 2, false);
def(_aload_0 , "aload_0" , "b" , NULL , T_OBJECT , 1, true ); // rewriting in interpreter
def(_aload_1 , "aload_1" , "b" , NULL , T_OBJECT , 1, false);
def(_aload_2 , "aload_2" , "b" , NULL , T_OBJECT , 1, false);
def(_aload_3 , "aload_3" , "b" , NULL , T_OBJECT , 1, false);
def(_iaload , "iaload" , "b" , NULL , T_INT , -1, true );
def(_laload , "laload" , "b" , NULL , T_LONG , 0, true );
def(_faload , "faload" , "b" , NULL , T_FLOAT , -1, true );
def(_daload , "daload" , "b" , NULL , T_DOUBLE , 0, true );
def(_aaload , "aaload" , "b" , NULL , T_OBJECT , -1, true );
def(_baload , "baload" , "b" , NULL , T_INT , -1, true );
def(_caload , "caload" , "b" , NULL , T_INT , -1, true );
def(_saload , "saload" , "b" , NULL , T_INT , -1, true );
def(_istore , "istore" , "bi" , "wbii" , T_VOID , -1, false);
def(_lstore , "lstore" , "bi" , "wbii" , T_VOID , -2, false);
def(_fstore , "fstore" , "bi" , "wbii" , T_VOID , -1, false);
def(_dstore , "dstore" , "bi" , "wbii" , T_VOID , -2, false);
def(_astore , "astore" , "bi" , "wbii" , T_VOID , -1, false);
def(_istore_0 , "istore_0" , "b" , NULL , T_VOID , -1, false);
def(_istore_1 , "istore_1" , "b" , NULL , T_VOID , -1, false);
def(_istore_2 , "istore_2" , "b" , NULL , T_VOID , -1, false);
def(_istore_3 , "istore_3" , "b" , NULL , T_VOID , -1, false);
def(_lstore_0 , "lstore_0" , "b" , NULL , T_VOID , -2, false);
def(_lstore_1 , "lstore_1" , "b" , NULL , T_VOID , -2, false);
def(_lstore_2 , "lstore_2" , "b" , NULL , T_VOID , -2, false);
def(_lstore_3 , "lstore_3" , "b" , NULL , T_VOID , -2, false);
def(_fstore_0 , "fstore_0" , "b" , NULL , T_VOID , -1, false);
def(_fstore_1 , "fstore_1" , "b" , NULL , T_VOID , -1, false);
def(_fstore_2 , "fstore_2" , "b" , NULL , T_VOID , -1, false);
def(_fstore_3 , "fstore_3" , "b" , NULL , T_VOID , -1, false);
def(_dstore_0 , "dstore_0" , "b" , NULL , T_VOID , -2, false);
def(_dstore_1 , "dstore_1" , "b" , NULL , T_VOID , -2, false);
def(_dstore_2 , "dstore_2" , "b" , NULL , T_VOID , -2, false);
def(_dstore_3 , "dstore_3" , "b" , NULL , T_VOID , -2, false);
def(_astore_0 , "astore_0" , "b" , NULL , T_VOID , -1, false);
def(_astore_1 , "astore_1" , "b" , NULL , T_VOID , -1, false);
def(_astore_2 , "astore_2" , "b" , NULL , T_VOID , -1, false);
def(_astore_3 , "astore_3" , "b" , NULL , T_VOID , -1, false);
def(_iastore , "iastore" , "b" , NULL , T_VOID , -3, true );
def(_lastore , "lastore" , "b" , NULL , T_VOID , -4, true );
def(_fastore , "fastore" , "b" , NULL , T_VOID , -3, true );
def(_dastore , "dastore" , "b" , NULL , T_VOID , -4, true );
def(_aastore , "aastore" , "b" , NULL , T_VOID , -3, true );
def(_bastore , "bastore" , "b" , NULL , T_VOID , -3, true );
def(_castore , "castore" , "b" , NULL , T_VOID , -3, true );
def(_sastore , "sastore" , "b" , NULL , T_VOID , -3, true );
def(_pop , "pop" , "b" , NULL , T_VOID , -1, false);
def(_pop2 , "pop2" , "b" , NULL , T_VOID , -2, false);
def(_dup , "dup" , "b" , NULL , T_VOID , 1, false);
def(_dup_x1 , "dup_x1" , "b" , NULL , T_VOID , 1, false);
def(_dup_x2 , "dup_x2" , "b" , NULL , T_VOID , 1, false);
def(_dup2 , "dup2" , "b" , NULL , T_VOID , 2, false);
def(_dup2_x1 , "dup2_x1" , "b" , NULL , T_VOID , 2, false);
def(_dup2_x2 , "dup2_x2" , "b" , NULL , T_VOID , 2, false);
def(_swap , "swap" , "b" , NULL , T_VOID , 0, false);
def(_iadd , "iadd" , "b" , NULL , T_INT , -1, false);
def(_ladd , "ladd" , "b" , NULL , T_LONG , -2, false);
def(_fadd , "fadd" , "b" , NULL , T_FLOAT , -1, false);
def(_dadd , "dadd" , "b" , NULL , T_DOUBLE , -2, false);
def(_isub , "isub" , "b" , NULL , T_INT , -1, false);
def(_lsub , "lsub" , "b" , NULL , T_LONG , -2, false);
def(_fsub , "fsub" , "b" , NULL , T_FLOAT , -1, false);
def(_dsub , "dsub" , "b" , NULL , T_DOUBLE , -2, false);
def(_imul , "imul" , "b" , NULL , T_INT , -1, false);
def(_lmul , "lmul" , "b" , NULL , T_LONG , -2, false);
def(_fmul , "fmul" , "b" , NULL , T_FLOAT , -1, false);
def(_dmul , "dmul" , "b" , NULL , T_DOUBLE , -2, false);
def(_idiv , "idiv" , "b" , NULL , T_INT , -1, true );
def(_ldiv , "ldiv" , "b" , NULL , T_LONG , -2, true );
def(_fdiv , "fdiv" , "b" , NULL , T_FLOAT , -1, false);
def(_ddiv , "ddiv" , "b" , NULL , T_DOUBLE , -2, false);
def(_irem , "irem" , "b" , NULL , T_INT , -1, true );
def(_lrem , "lrem" , "b" , NULL , T_LONG , -2, true );
def(_frem , "frem" , "b" , NULL , T_FLOAT , -1, false);
def(_drem , "drem" , "b" , NULL , T_DOUBLE , -2, false);
def(_ineg , "ineg" , "b" , NULL , T_INT , 0, false);
def(_lneg , "lneg" , "b" , NULL , T_LONG , 0, false);
def(_fneg , "fneg" , "b" , NULL , T_FLOAT , 0, false);
def(_dneg , "dneg" , "b" , NULL , T_DOUBLE , 0, false);
def(_ishl , "ishl" , "b" , NULL , T_INT , -1, false);
def(_lshl , "lshl" , "b" , NULL , T_LONG , -1, false);
def(_ishr , "ishr" , "b" , NULL , T_INT , -1, false);
def(_lshr , "lshr" , "b" , NULL , T_LONG , -1, false);
def(_iushr , "iushr" , "b" , NULL , T_INT , -1, false);
def(_lushr , "lushr" , "b" , NULL , T_LONG , -1, false);
def(_iand , "iand" , "b" , NULL , T_INT , -1, false);
def(_land , "land" , "b" , NULL , T_LONG , -2, false);
def(_ior , "ior" , "b" , NULL , T_INT , -1, false);
def(_lor , "lor" , "b" , NULL , T_LONG , -2, false);
def(_ixor , "ixor" , "b" , NULL , T_INT , -1, false);
def(_lxor , "lxor" , "b" , NULL , T_LONG , -2, false);
def(_iinc , "iinc" , "bic" , "wbiicc", T_VOID , 0, false);
def(_i2l , "i2l" , "b" , NULL , T_LONG , 1, false);
def(_i2f , "i2f" , "b" , NULL , T_FLOAT , 0, false);
def(_i2d , "i2d" , "b" , NULL , T_DOUBLE , 1, false);
def(_l2i , "l2i" , "b" , NULL , T_INT , -1, false);
def(_l2f , "l2f" , "b" , NULL , T_FLOAT , -1, false);
def(_l2d , "l2d" , "b" , NULL , T_DOUBLE , 0, false);
def(_f2i , "f2i" , "b" , NULL , T_INT , 0, false);
def(_f2l , "f2l" , "b" , NULL , T_LONG , 1, false);
def(_f2d , "f2d" , "b" , NULL , T_DOUBLE , 1, false);
def(_d2i , "d2i" , "b" , NULL , T_INT , -1, false);
def(_d2l , "d2l" , "b" , NULL , T_LONG , 0, false);
def(_d2f , "d2f" , "b" , NULL , T_FLOAT , -1, false);
def(_i2b , "i2b" , "b" , NULL , T_BYTE , 0, false);
def(_i2c , "i2c" , "b" , NULL , T_CHAR , 0, false);
def(_i2s , "i2s" , "b" , NULL , T_SHORT , 0, false);
def(_lcmp , "lcmp" , "b" , NULL , T_VOID , -3, false);
def(_fcmpl , "fcmpl" , "b" , NULL , T_VOID , -1, false);
def(_fcmpg , "fcmpg" , "b" , NULL , T_VOID , -1, false);
def(_dcmpl , "dcmpl" , "b" , NULL , T_VOID , -3, false);
def(_dcmpg , "dcmpg" , "b" , NULL , T_VOID , -3, false);
def(_ifeq , "ifeq" , "boo" , NULL , T_VOID , -1, false);
def(_ifne , "ifne" , "boo" , NULL , T_VOID , -1, false);
def(_iflt , "iflt" , "boo" , NULL , T_VOID , -1, false);
def(_ifge , "ifge" , "boo" , NULL , T_VOID , -1, false);
def(_ifgt , "ifgt" , "boo" , NULL , T_VOID , -1, false);
def(_ifle , "ifle" , "boo" , NULL , T_VOID , -1, false);
def(_if_icmpeq , "if_icmpeq" , "boo" , NULL , T_VOID , -2, false);
def(_if_icmpne , "if_icmpne" , "boo" , NULL , T_VOID , -2, false);
def(_if_icmplt , "if_icmplt" , "boo" , NULL , T_VOID , -2, false);
def(_if_icmpge , "if_icmpge" , "boo" , NULL , T_VOID , -2, false);
def(_if_icmpgt , "if_icmpgt" , "boo" , NULL , T_VOID , -2, false);
def(_if_icmple , "if_icmple" , "boo" , NULL , T_VOID , -2, false);
def(_if_acmpeq , "if_acmpeq" , "boo" , NULL , T_VOID , -2, false);
def(_if_acmpne , "if_acmpne" , "boo" , NULL , T_VOID , -2, false);
def(_goto , "goto" , "boo" , NULL , T_VOID , 0, false);
def(_jsr , "jsr" , "boo" , NULL , T_INT , 0, false);
def(_ret , "ret" , "bi" , "wbii" , T_VOID , 0, false);
def(_tableswitch , "tableswitch" , "" , NULL , T_VOID , -1, false); // may have backward branches
def(_lookupswitch , "lookupswitch" , "" , NULL , T_VOID , -1, false); // rewriting in interpreter
def(_ireturn , "ireturn" , "b" , NULL , T_INT , -1, true);
def(_lreturn , "lreturn" , "b" , NULL , T_LONG , -2, true);
def(_freturn , "freturn" , "b" , NULL , T_FLOAT , -1, true);
def(_dreturn , "dreturn" , "b" , NULL , T_DOUBLE , -2, true);
def(_areturn , "areturn" , "b" , NULL , T_OBJECT , -1, true);
def(_return , "return" , "b" , NULL , T_VOID , 0, true);
def(_getstatic , "getstatic" , "bJJ" , NULL , T_ILLEGAL, 1, true );
def(_putstatic , "putstatic" , "bJJ" , NULL , T_ILLEGAL, -1, true );
def(_getfield , "getfield" , "bJJ" , NULL , T_ILLEGAL, 0, true );
def(_putfield , "putfield" , "bJJ" , NULL , T_ILLEGAL, -2, true );
def(_invokevirtual , "invokevirtual" , "bJJ" , NULL , T_ILLEGAL, -1, true);
def(_invokespecial , "invokespecial" , "bJJ" , NULL , T_ILLEGAL, -1, true);
def(_invokestatic , "invokestatic" , "bJJ" , NULL , T_ILLEGAL, 0, true);
def(_invokeinterface , "invokeinterface" , "bJJ__", NULL , T_ILLEGAL, -1, true);
def(_invokedynamic , "invokedynamic" , "bJJJJ", NULL , T_ILLEGAL, 0, true );
def(_new , "new" , "bkk" , NULL , T_OBJECT , 1, true );
def(_newarray , "newarray" , "bc" , NULL , T_OBJECT , 0, true );
def(_anewarray , "anewarray" , "bkk" , NULL , T_OBJECT , 0, true );
def(_arraylength , "arraylength" , "b" , NULL , T_VOID , 0, true );
def(_athrow , "athrow" , "b" , NULL , T_VOID , -1, true );
def(_checkcast , "checkcast" , "bkk" , NULL , T_OBJECT , 0, true );
def(_instanceof , "instanceof" , "bkk" , NULL , T_INT , 0, true );
def(_monitorenter , "monitorenter" , "b" , NULL , T_VOID , -1, true );
def(_monitorexit , "monitorexit" , "b" , NULL , T_VOID , -1, true );
def(_wide , "wide" , "" , NULL , T_VOID , 0, false);
def(_multianewarray , "multianewarray" , "bkkc" , NULL , T_OBJECT , 1, true );
def(_ifnull , "ifnull" , "boo" , NULL , T_VOID , -1, false);
def(_ifnonnull , "ifnonnull" , "boo" , NULL , T_VOID , -1, false);
def(_goto_w , "goto_w" , "boooo", NULL , T_VOID , 0, false);
def(_jsr_w , "jsr_w" , "boooo", NULL , T_INT , 0, false);
def(_breakpoint , "breakpoint" , "" , NULL , T_VOID , 0, true);
// JVM bytecodes
// bytecode bytecode name format wide f. result tp stk traps std code
def(_fast_agetfield , "fast_agetfield" , "bJJ" , NULL , T_OBJECT , 0, true , _getfield );
def(_fast_bgetfield , "fast_bgetfield" , "bJJ" , NULL , T_INT , 0, true , _getfield );
def(_fast_cgetfield , "fast_cgetfield" , "bJJ" , NULL , T_CHAR , 0, true , _getfield );
def(_fast_dgetfield , "fast_dgetfield" , "bJJ" , NULL , T_DOUBLE , 0, true , _getfield );
def(_fast_fgetfield , "fast_fgetfield" , "bJJ" , NULL , T_FLOAT , 0, true , _getfield );
def(_fast_igetfield , "fast_igetfield" , "bJJ" , NULL , T_INT , 0, true , _getfield );
def(_fast_lgetfield , "fast_lgetfield" , "bJJ" , NULL , T_LONG , 0, true , _getfield );
def(_fast_sgetfield , "fast_sgetfield" , "bJJ" , NULL , T_SHORT , 0, true , _getfield );
def(_fast_aputfield , "fast_aputfield" , "bJJ" , NULL , T_OBJECT , 0, true , _putfield );
def(_fast_bputfield , "fast_bputfield" , "bJJ" , NULL , T_INT , 0, true , _putfield );
def(_fast_cputfield , "fast_cputfield" , "bJJ" , NULL , T_CHAR , 0, true , _putfield );
def(_fast_dputfield , "fast_dputfield" , "bJJ" , NULL , T_DOUBLE , 0, true , _putfield );
def(_fast_fputfield , "fast_fputfield" , "bJJ" , NULL , T_FLOAT , 0, true , _putfield );
def(_fast_iputfield , "fast_iputfield" , "bJJ" , NULL , T_INT , 0, true , _putfield );
def(_fast_lputfield , "fast_lputfield" , "bJJ" , NULL , T_LONG , 0, true , _putfield );
def(_fast_sputfield , "fast_sputfield" , "bJJ" , NULL , T_SHORT , 0, true , _putfield );
def(_fast_aload_0 , "fast_aload_0" , "b" , NULL , T_OBJECT , 1, true , _aload_0 );
def(_fast_iaccess_0 , "fast_iaccess_0" , "b_JJ" , NULL , T_INT , 1, true , _aload_0 );
def(_fast_aaccess_0 , "fast_aaccess_0" , "b_JJ" , NULL , T_OBJECT , 1, true , _aload_0 );
def(_fast_faccess_0 , "fast_faccess_0" , "b_JJ" , NULL , T_OBJECT , 1, true , _aload_0 );
def(_fast_iload , "fast_iload" , "bi" , NULL , T_INT , 1, false, _iload);
def(_fast_iload2 , "fast_iload2" , "bi_i" , NULL , T_INT , 2, false, _iload);
def(_fast_icaload , "fast_icaload" , "bi_" , NULL , T_INT , 0, false, _iload);
// Faster method invocation.
def(_fast_invokevfinal , "fast_invokevfinal" , "bJJ" , NULL , T_ILLEGAL, -1, true, _invokevirtual );
def(_fast_linearswitch , "fast_linearswitch" , "" , NULL , T_VOID , -1, false, _lookupswitch );
def(_fast_binaryswitch , "fast_binaryswitch" , "" , NULL , T_VOID , -1, false, _lookupswitch );
def(_return_register_finalizer , "return_register_finalizer" , "b" , NULL , T_VOID , 0, true, _return);
def(_fast_aldc , "fast_aldc" , "bj" , NULL , T_OBJECT, 1, true, _ldc );
def(_fast_aldc_w , "fast_aldc_w" , "bJJ" , NULL , T_OBJECT, 1, true, _ldc_w );
def(_shouldnotreachhere , "_shouldnotreachhere" , "b" , NULL , T_VOID , 0, false);
// platform specific JVM bytecodes
pd_initialize();
// compare can_trap information for each bytecode with the
// can_trap information for the corresponding base bytecode
// (if a rewritten bytecode can trap, so must the base bytecode)
#ifdef ASSERT
{ for (int i = 0; i < number_of_codes; i++) {
if (is_defined(i)) {
Code code = cast(i);
Code java = java_code(code);
if (can_trap(code) && !can_trap(java))
fatal(err_msg("%s can trap => %s can trap, too", name(code),
name(java)));
}
}
}
#endif
// initialization successful
_is_initialized = true;
}
void bytecodes_init() {
Bytecodes::initialize();
}
// Restore optimization
#ifdef _M_AMD64
#pragma optimize ("", on)
#endif
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