1 /* Utility macros to handle Java(TM) byte codes.
3 Copyright (C) 1996 Free Software Foundation, Inc.
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2, or (at your option)
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNU CC; see the file COPYING. If not, write to
17 the Free Software Foundation, 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
20 Java and all Java-based marks are trademarks or registered trademarks
21 of Sun Microsystems, Inc. in the United States and other countries.
22 The Free Software Foundation is independent of Sun Microsystems, Inc. */
24 /* Written by Per Bothner <bothner@cygnus.com>, February 1996. */
30 typedef unsigned char uint8;
34 typedef unsigned int16 uint16;
39 typedef unsigned int32 uint32;
41 /* A signed 64-bit (or more) integral type, suiteable for Java's 'long'. */
43 #define int64 long long
45 /* An unsigned 64-bit (or more) integral type, same length as int64. */
47 #define uint64 unsigned int64
57 /* A 32-bit IEEE single-precision float. */
62 /* A 32-bit IEEE double-precision float. */
64 #define jdouble double
73 /* A jword is an unsigned integral type big enough for a 32-bit jint
74 or jfloat *or* a pointer. It is the type appropriate for stack
75 locations and local variables in a Java interpreter. */
82 #if !defined(inline) && !defined(__GC__) && !defined(__cplusplus)
87 #define IMMEDIATE_u1 (PC++, CHECK_PC_IN_RANGE(PC), BCODE[PC-1])
90 #define IMMEDIATE_s1 (PC++, CHECK_PC_IN_RANGE(PC), (signed char)BCODE[PC-1])
93 #define IMMEDIATE_s2 (PC+=2, CHECK_PC_IN_RANGE(PC), \
94 (signed char) BCODE[PC-2] * 256 + BCODE[PC-1])
97 #define IMMEDIATE_u2 (PC+=2, CHECK_PC_IN_RANGE(PC),\
98 (BCODE[PC-2] * 256 + BCODE[PC-1]))
101 #define IMMEDIATE_s4 (PC+=4, CHECK_PC_IN_RANGE(PC), \
102 ((jint)((BCODE[PC-4] << 24) | (BCODE[PC-3] << 16) \
103 | (BCODE[PC-2] << 8) | (BCODE[PC-1]))))
107 WORD_TO_FLOAT(jword w)
114 WORDS_TO_LONG(jword hi, jword lo)
116 return ((jlong) hi << 32) | ((jlong)lo & (((jlong)1 << 32) -1));
126 WORDS_TO_DOUBLE(jword hi, jword lo)
128 wu.l = WORDS_TO_LONG(hi, lo);
132 /* If PREFIX_CHAR is the first character of the Utf8 encoding of a character,
133 return the number of bytes taken by the encoding.
134 Return -1 for a continuation character. */
135 #define UT8_CHAR_LENGTH(PREFIX_CHAR) \
136 ((unsigned char)(PREFIX_CHAR) < 128 ? 1 \
137 : ((PREFIX_CHAR) & 0x40) == 0 ? -1 \
138 : ((PREFIX_CHAR) & 0x20) == 0 ? 2 \
139 : ((PREFIX_CHAR) & 0x10) == 0 ? 3 \
140 : ((PREFIX_CHAR) & 0x08) == 0 ? 4 : 5)
142 #endif /* !JAVAOP_H */