1 /* src/vm/suck.h - functions to read LE ordered types from a buffer
3 Copyright (C) 1996-2005 R. Grafl, A. Krall, C. Kruegel, C. Oates,
4 R. Obermaisser, M. Platter, M. Probst, S. Ring, E. Steiner,
5 C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich, J. Wenninger,
6 Institut f. Computersprachen - TU Wien
8 This file is part of CACAO.
10 This program is free software; you can redistribute it and/or
11 modify it under the terms of the GNU General Public License as
12 published by the Free Software Foundation; either version 2, or (at
13 your option) any later version.
15 This program is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
25 Contact: cacao@complang.tuwien.ac.at
27 Authors: Christian Thalinger
31 $Id: suck.h 3876 2005-12-05 19:03:54Z twisti $
43 #include "vm/loader.h"
46 /* macros to read LE and BE types from a buffer ********************************
48 BE macros are for class file loading.
49 LE macros are for ZIP file loading.
51 *******************************************************************************/
53 #if WORDS_BIGENDIAN == 0
55 /* we can optimize the LE access on little endian machines */
57 #define SUCK_LE_U1(p) *((u1 *) (p))
58 #define SUCK_LE_U2(p) *((u2 *) (p))
59 #define SUCK_LE_U4(p) *((u4 *) (p))
62 #define SUCK_LE_U8(p) *((u8 *) (p))
65 #define SUCK_BE_U1(p) \
68 #define SUCK_BE_U2(p) \
69 ((((u2) (p)[0]) << 8) + \
72 #define SUCK_BE_U4(p) \
73 ((((u4) (p)[0]) << 24) + \
74 (((u4) (p)[1]) << 16) + \
75 (((u4) (p)[2]) << 8) + \
79 #define SUCK_BE_U8(p) \
80 ((((u8) (p)[0]) << 56) + \
81 (((u8) (p)[1]) << 48) + \
82 (((u8) (p)[2]) << 40) + \
83 (((u8) (p)[3]) << 32) + \
84 (((u8) (p)[4]) << 24) + \
85 (((u8) (p)[5]) << 16) + \
86 (((u8) (p)[6]) << 8) + \
90 #else /* WORDS_BIGENDIAN == 0 */
92 #define SUCK_LE_U1(p) \
95 #define SUCK_LE_U2(p) \
96 ((((u2) (p)[1]) << 8) + \
99 #define SUCK_LE_U4(p) \
100 ((((u4) (p)[3]) << 24) + \
101 (((u4) (p)[2]) << 16) + \
102 (((u4) (p)[1]) << 8) + \
105 #if U8_AVAILABLE == 1
106 #define SUCK_LE_U8(p) \
107 ((((u8) (p)[7]) << 56) + \
108 (((u8) (p)[6]) << 48) + \
109 (((u8) (p)[5]) << 40) + \
110 (((u8) (p)[4]) << 32) + \
111 (((u8) (p)[3]) << 24) + \
112 (((u8) (p)[2]) << 16) + \
113 (((u8) (p)[1]) << 8) + \
117 /* we can optimize the BE access on big endian machines */
119 #if defined(__MIPS__)
121 /* MIPS needs aligned access */
123 #define SUCK_BE_U1(p) \
126 #define SUCK_BE_U2(p) \
127 ((((u2) (p)[0]) << 8) + \
130 #define SUCK_BE_U4(p) \
131 ((((u4) (p)[0]) << 24) + \
132 (((u4) (p)[1]) << 16) + \
133 (((u4) (p)[2]) << 8) + \
136 #if U8_AVAILABLE == 1
137 #define SUCK_BE_U8(p) \
138 ((((u8) (p)[0]) << 56) + \
139 (((u8) (p)[1]) << 48) + \
140 (((u8) (p)[2]) << 40) + \
141 (((u8) (p)[3]) << 32) + \
142 (((u8) (p)[4]) << 24) + \
143 (((u8) (p)[5]) << 16) + \
144 (((u8) (p)[6]) << 8) + \
148 #else /* defined(__MIPS__) */
150 #define SUCK_BE_U1(p) *((u1 *) (p))
151 #define SUCK_BE_U2(p) *((u2 *) (p))
152 #define SUCK_BE_U4(p) *((u4 *) (p))
154 #if U8_AVAILABLE == 1
155 #define SUCK_BE_U8(p) *((u8 *) (p))
158 #endif /* defined(__MIPS__) */
160 #endif /* WORDS_BIGENDIAN == 0 */
163 /* signed suck defines ********************************************************/
165 #define suck_s1(a) (s1) suck_u1((a))
166 #define suck_s2(a) (s2) suck_u2((a))
167 #define suck_s4(a) (s4) suck_u4((a))
168 #define suck_s8(a) (s8) suck_u8((a))
171 /* function prototypes ********************************************************/
173 bool suck_init(char *classpath);
175 bool suck_check_classbuffer_size(classbuffer *cb, s4 len);
177 u1 suck_u1(classbuffer *cb);
178 u2 suck_u2(classbuffer *cb);
179 u4 suck_u4(classbuffer *cb);
180 u8 suck_u8(classbuffer *cb);
182 float suck_float(classbuffer *cb);
183 double suck_double(classbuffer *cb);
185 void suck_nbytes(u1 *buffer, classbuffer *cb, s4 len);
186 void suck_skip_nbytes(classbuffer *cb, s4 len);
188 classbuffer *suck_start(classinfo *c);
190 void suck_stop(classbuffer *cb);
195 * These are local overrides for various environment variables in Emacs.
196 * Please do not remove this and leave it at the end of the file, where
197 * Emacs will automagically detect them.
198 * ---------------------------------------------------------------------
201 * indent-tabs-mode: t