/* Utility macros to handle Java(TM) byte codes.
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/* Utility macros to handle Java(TM) byte codes.
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Copyright (C) 1996, 1998, 1999, 2003, 2007 Free Software Foundation, Inc.
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Copyright (C) 1996, 1998, 1999, 2003, 2007 Free Software Foundation, Inc.
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This file is part of GCC.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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any later version.
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GCC is distributed in the hope that it will be useful,
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>.
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<http://www.gnu.org/licenses/>.
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Java and all Java-based marks are trademarks or registered trademarks
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Java and all Java-based marks are trademarks or registered trademarks
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of Sun Microsystems, Inc. in the United States and other countries.
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of Sun Microsystems, Inc. in the United States and other countries.
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The Free Software Foundation is independent of Sun Microsystems, Inc. */
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The Free Software Foundation is independent of Sun Microsystems, Inc. */
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/* Written by Per Bothner <bothner@cygnus.com>, February 1996. */
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/* Written by Per Bothner <bothner@cygnus.com>, February 1996. */
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#ifndef GCC_JAVAOP_H
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#ifndef GCC_JAVAOP_H
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#define GCC_JAVAOP_H
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#define GCC_JAVAOP_H
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typedef unsigned char uint8;
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typedef unsigned char uint8;
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#ifndef int16
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#ifndef int16
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#if __SHRT_MAX__ == 32767
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#if __SHRT_MAX__ == 32767
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#define int16 short
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#define int16 short
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#elif __INT_MAX__ == 32767
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#elif __INT_MAX__ == 32767
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#define int16 int
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#define int16 int
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#elif __LONG_MAX__ == 32767
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#elif __LONG_MAX__ == 32767
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#define int16 long
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#define int16 long
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#else
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#else
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#define int16 short
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#define int16 short
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#endif
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#endif
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#endif
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#endif
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typedef unsigned int16 uint16;
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typedef unsigned int16 uint16;
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#ifndef int32
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#ifndef int32
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#if __INT_MAX__ == 2147483647
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#if __INT_MAX__ == 2147483647
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#define int32 int
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#define int32 int
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#elif __LONG_MAX__ == 2147483647
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#elif __LONG_MAX__ == 2147483647
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#define int32 long
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#define int32 long
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#elif __SHRT_MAX__ == 2147483647
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#elif __SHRT_MAX__ == 2147483647
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#define int32 short
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#define int32 short
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#else
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#else
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#define int32 int
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#define int32 int
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#endif
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#endif
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#endif
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#endif
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typedef unsigned int32 uint32;
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typedef unsigned int32 uint32;
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/* A signed 64-bit (or more) integral type, suitable for Java's 'long'. */
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/* A signed 64-bit (or more) integral type, suitable for Java's 'long'. */
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#ifndef int64
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#ifndef int64
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#if __LONG_MAX__ == 9223372036854775807LL
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#if __LONG_MAX__ == 9223372036854775807LL
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#define int64 long
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#define int64 long
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#elif __LONG_LONG_MAX__ == 9223372036854775807LL
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#elif __LONG_LONG_MAX__ == 9223372036854775807LL
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#define int64 long long
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#define int64 long long
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#else
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#else
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#define int64 long long
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#define int64 long long
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#endif
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#endif
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#endif
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#endif
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/* An unsigned 64-bit (or more) integral type, same length as int64. */
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/* An unsigned 64-bit (or more) integral type, same length as int64. */
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#ifndef uint64
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#ifndef uint64
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#define uint64 unsigned int64
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#define uint64 unsigned int64
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#endif
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#endif
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typedef uint16 jchar;
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typedef uint16 jchar;
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typedef signed char jbyte;
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typedef signed char jbyte;
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typedef int16 jshort;
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typedef int16 jshort;
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typedef int32 jint;
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typedef int32 jint;
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typedef int64 jlong;
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typedef int64 jlong;
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typedef void* jref;
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typedef void* jref;
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/* A 32-bit big-endian IEEE single-precision float. */
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/* A 32-bit big-endian IEEE single-precision float. */
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typedef struct _jfloat {
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typedef struct _jfloat {
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unsigned int negative : 1;
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unsigned int negative : 1;
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unsigned int exponent : 8;
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unsigned int exponent : 8;
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unsigned int mantissa : 23;
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unsigned int mantissa : 23;
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} jfloat;
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} jfloat;
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#define JFLOAT_FINITE(f) ((f).exponent != 0xFF)
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#define JFLOAT_FINITE(f) ((f).exponent != 0xFF)
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#define JFLOAT_QNAN_MASK 0x400000
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#define JFLOAT_QNAN_MASK 0x400000
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#define JFLOAT_EXP_BIAS 0x7f
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#define JFLOAT_EXP_BIAS 0x7f
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/* A 32-bit big-endian IEEE double-precision float. */
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/* A 32-bit big-endian IEEE double-precision float. */
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typedef struct _jdouble {
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typedef struct _jdouble {
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unsigned int negative : 1;
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unsigned int negative : 1;
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unsigned int exponent : 11;
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unsigned int exponent : 11;
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unsigned int mantissa0: 20;
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unsigned int mantissa0: 20;
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unsigned int mantissa1: 32;
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unsigned int mantissa1: 32;
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} jdouble;
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} jdouble;
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#define JDOUBLE_FINITE(f) ((f).exponent != 0x7FF)
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#define JDOUBLE_FINITE(f) ((f).exponent != 0x7FF)
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#define JDOUBLE_QNAN_MASK 0x80000 /* apply to mantissa0 */
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#define JDOUBLE_QNAN_MASK 0x80000 /* apply to mantissa0 */
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#define JDOUBLE_EXP_BIAS 0x3ff
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#define JDOUBLE_EXP_BIAS 0x3ff
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/* A jword is an unsigned integral type big enough for a 32-bit jint
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/* A jword is an unsigned integral type big enough for a 32-bit jint
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or jfloat *or* a pointer. It is the type appropriate for stack
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or jfloat *or* a pointer. It is the type appropriate for stack
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locations and local variables in a Java interpreter. */
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locations and local variables in a Java interpreter. */
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#ifndef jword
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#ifndef jword
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#if defined (__LP64__) || defined (__alpha__) || defined (__MMIX__) \
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#if defined (__LP64__) || defined (__alpha__) || defined (__MMIX__) \
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|| (defined (_ARCH_PPC) && defined (__64BIT__)) \
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|| (defined (_ARCH_PPC) && defined (__64BIT__)) \
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|| defined (__powerpc64__) || defined (__s390x__) || defined (__x86_64__) \
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|| defined (__powerpc64__) || defined (__s390x__) || defined (__x86_64__) \
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|| defined (__sparcv9) || (defined (__sparc__) && defined (__arch64__))
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|| defined (__sparcv9) || (defined (__sparc__) && defined (__arch64__))
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#define jword uint64
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#define jword uint64
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#else
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#else
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#define jword uint32
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#define jword uint32
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#endif
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#endif
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#endif
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#endif
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#ifndef IMMEDIATE_u1
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#ifndef IMMEDIATE_u1
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#define IMMEDIATE_u1 (PC++, CHECK_PC_IN_RANGE(PC), BCODE[PC-1])
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#define IMMEDIATE_u1 (PC++, CHECK_PC_IN_RANGE(PC), BCODE[PC-1])
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#endif
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#endif
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#ifndef IMMEDIATE_s1
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#ifndef IMMEDIATE_s1
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#define IMMEDIATE_s1 (PC++, CHECK_PC_IN_RANGE(PC), (signed char)BCODE[PC-1])
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#define IMMEDIATE_s1 (PC++, CHECK_PC_IN_RANGE(PC), (signed char)BCODE[PC-1])
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#endif
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#endif
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#ifndef IMMEDIATE_s2
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#ifndef IMMEDIATE_s2
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#define IMMEDIATE_s2 (PC+=2, CHECK_PC_IN_RANGE(PC), \
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#define IMMEDIATE_s2 (PC+=2, CHECK_PC_IN_RANGE(PC), \
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(signed char) BCODE[PC-2] * 256 + BCODE[PC-1])
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(signed char) BCODE[PC-2] * 256 + BCODE[PC-1])
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#endif
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#endif
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#ifndef IMMEDIATE_u2
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#ifndef IMMEDIATE_u2
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#define IMMEDIATE_u2 (PC+=2, CHECK_PC_IN_RANGE(PC),\
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#define IMMEDIATE_u2 (PC+=2, CHECK_PC_IN_RANGE(PC),\
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(BCODE[PC-2] * 256 + BCODE[PC-1]))
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(BCODE[PC-2] * 256 + BCODE[PC-1]))
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#endif
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#endif
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#ifndef IMMEDIATE_s4
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#ifndef IMMEDIATE_s4
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#define IMMEDIATE_s4 (PC+=4, CHECK_PC_IN_RANGE(PC), \
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#define IMMEDIATE_s4 (PC+=4, CHECK_PC_IN_RANGE(PC), \
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(WORD_TO_INT((BCODE[PC-4] << 24) | (BCODE[PC-3] << 16) \
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(WORD_TO_INT((BCODE[PC-4] << 24) | (BCODE[PC-3] << 16) \
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| (BCODE[PC-2] << 8) | (BCODE[PC-1]))))
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| (BCODE[PC-2] << 8) | (BCODE[PC-1]))))
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#endif
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#endif
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static inline jfloat
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static inline jfloat
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WORD_TO_FLOAT(jword w)
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WORD_TO_FLOAT(jword w)
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{
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{
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jfloat f;
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jfloat f;
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f.negative = (w & 0x80000000) >> 31;
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f.negative = (w & 0x80000000) >> 31;
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f.exponent = (w & 0x7f800000) >> 23;
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f.exponent = (w & 0x7f800000) >> 23;
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f.mantissa = (w & 0x007fffff);
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f.mantissa = (w & 0x007fffff);
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return f;
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return f;
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}
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}
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/* Sign extend w. If the host on which this cross-compiler runs uses
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/* Sign extend w. If the host on which this cross-compiler runs uses
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a 64-bit type for jword the appropriate sign extension is
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a 64-bit type for jword the appropriate sign extension is
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performed; if it's a 32-bit type the arithmetic does nothing but is
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performed; if it's a 32-bit type the arithmetic does nothing but is
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harmless. */
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harmless. */
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static inline jint
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static inline jint
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WORD_TO_INT(jword w)
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WORD_TO_INT(jword w)
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{
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{
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jint n = w & 0xffffffff; /* Mask lower 32 bits. */
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jint n = w & 0xffffffff; /* Mask lower 32 bits. */
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n ^= (jint)1 << 31;
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n ^= (jint)1 << 31;
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n -= (jint)1 << 31; /* Sign extend lower 32 bits to upper. */
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n -= (jint)1 << 31; /* Sign extend lower 32 bits to upper. */
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return n;
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return n;
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}
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}
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static inline jlong
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static inline jlong
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WORDS_TO_LONG(jword hi, jword lo)
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WORDS_TO_LONG(jword hi, jword lo)
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{
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{
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return ((jlong) hi << 32) | ((jlong)lo & (((jlong)1 << 32) -1));
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return ((jlong) hi << 32) | ((jlong)lo & (((jlong)1 << 32) -1));
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}
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}
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static inline jdouble
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static inline jdouble
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WORDS_TO_DOUBLE(jword hi, jword lo)
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WORDS_TO_DOUBLE(jword hi, jword lo)
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{
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{
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jdouble d;
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jdouble d;
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d.negative = (hi & 0x80000000) >> 31;
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d.negative = (hi & 0x80000000) >> 31;
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d.exponent = (hi & 0x7ff00000) >> 20;
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d.exponent = (hi & 0x7ff00000) >> 20;
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d.mantissa0 = (hi & 0x000fffff);
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d.mantissa0 = (hi & 0x000fffff);
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d.mantissa1 = lo;
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d.mantissa1 = lo;
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return d;
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return d;
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}
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}
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/* If PREFIX_CHAR is the first character of the Utf8 encoding of a character,
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/* If PREFIX_CHAR is the first character of the Utf8 encoding of a character,
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return the number of bytes taken by the encoding.
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return the number of bytes taken by the encoding.
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Return -1 for a continuation character. */
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Return -1 for a continuation character. */
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#define UT8_CHAR_LENGTH(PREFIX_CHAR) \
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#define UT8_CHAR_LENGTH(PREFIX_CHAR) \
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((unsigned char)(PREFIX_CHAR) < 128 ? 1 \
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((unsigned char)(PREFIX_CHAR) < 128 ? 1 \
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: ((PREFIX_CHAR) & 0x40) == 0 ? -1 \
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: ((PREFIX_CHAR) & 0x40) == 0 ? -1 \
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: ((PREFIX_CHAR) & 0x20) == 0 ? 2 \
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: ((PREFIX_CHAR) & 0x20) == 0 ? 2 \
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: ((PREFIX_CHAR) & 0x10) == 0 ? 3 \
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: ((PREFIX_CHAR) & 0x10) == 0 ? 3 \
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: ((PREFIX_CHAR) & 0x08) == 0 ? 4 : 5)
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: ((PREFIX_CHAR) & 0x08) == 0 ? 4 : 5)
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#endif /* ! GCC_JAVAOP_H */
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#endif /* ! GCC_JAVAOP_H */
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