1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
|
/*
* Generic thunking code to convert data between host and target CPU
*
* Copyright (c) 2003 Fabrice Bellard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef THUNK_H
#define THUNK_H
#include <inttypes.h>
#include "config.h"
#ifdef HAVE_BYTESWAP_H
#include <byteswap.h>
#else
#define bswap_16(x) \
({ \
uint16_t __x = (x); \
((uint16_t)( \
(((uint16_t)(__x) & (uint16_t)0x00ffU) << 8) | \
(((uint16_t)(__x) & (uint16_t)0xff00U) >> 8) )); \
})
#define bswap_32(x) \
({ \
uint32_t __x = (x); \
((uint32_t)( \
(((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \
(((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \
(((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \
(((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) )); \
})
#define bswap_64(x) \
({ \
uint64_t __x = (x); \
((uint64_t)( \
(uint64_t)(((uint64_t)(__x) & (uint64_t)0x00000000000000ffULL) << 56) | \
(uint64_t)(((uint64_t)(__x) & (uint64_t)0x000000000000ff00ULL) << 40) | \
(uint64_t)(((uint64_t)(__x) & (uint64_t)0x0000000000ff0000ULL) << 24) | \
(uint64_t)(((uint64_t)(__x) & (uint64_t)0x00000000ff000000ULL) << 8) | \
(uint64_t)(((uint64_t)(__x) & (uint64_t)0x000000ff00000000ULL) >> 8) | \
(uint64_t)(((uint64_t)(__x) & (uint64_t)0x0000ff0000000000ULL) >> 24) | \
(uint64_t)(((uint64_t)(__x) & (uint64_t)0x00ff000000000000ULL) >> 40) | \
(uint64_t)(((uint64_t)(__x) & (uint64_t)0xff00000000000000ULL) >> 56) )); \
})
#endif
#ifdef WORDS_BIGENDIAN
#define BSWAP_NEEDED
#endif
/* XXX: autoconf */
#define TARGET_I386
#define TARGET_LONG_BITS 32
#if defined(__alpha__) || defined (__ia64__)
#define HOST_LONG_BITS 64
#else
#define HOST_LONG_BITS 32
#endif
#define TARGET_LONG_SIZE (TARGET_LONG_BITS / 8)
#define HOST_LONG_SIZE (TARGET_LONG_BITS / 8)
static inline uint16_t bswap16(uint16_t x)
{
return bswap_16(x);
}
static inline uint32_t bswap32(uint32_t x)
{
return bswap_32(x);
}
static inline uint64_t bswap64(uint64_t x)
{
return bswap_64(x);
}
static inline void bswap16s(uint16_t *s)
{
*s = bswap16(*s);
}
static inline void bswap32s(uint32_t *s)
{
*s = bswap32(*s);
}
static inline void bswap64s(uint64_t *s)
{
*s = bswap64(*s);
}
#ifdef BSWAP_NEEDED
static inline uint16_t tswap16(uint16_t s)
{
return bswap16(s);
}
static inline uint32_t tswap32(uint32_t s)
{
return bswap32(s);
}
static inline uint64_t tswap64(uint64_t s)
{
return bswap64(s);
}
static inline void tswap16s(uint16_t *s)
{
*s = bswap16(*s);
}
static inline void tswap32s(uint32_t *s)
{
*s = bswap32(*s);
}
static inline void tswap64s(uint64_t *s)
{
*s = bswap64(*s);
}
#else
static inline uint16_t tswap16(uint16_t s)
{
return s;
}
static inline uint32_t tswap32(uint32_t s)
{
return s;
}
static inline uint64_t tswap64(uint64_t s)
{
return s;
}
static inline void tswap16s(uint16_t *s)
{
}
static inline void tswap32s(uint32_t *s)
{
}
static inline void tswap64s(uint64_t *s)
{
}
#endif
#if TARGET_LONG_SIZE == 4
#define tswapl(s) tswap32(s)
#define tswapls(s) tswap32s((uint32_t *)(s))
#else
#define tswapl(s) tswap64(s)
#define tswapls(s) tswap64s((uint64_t *)(s))
#endif
#if TARGET_LONG_SIZE == 4
typedef int32_t target_long;
typedef uint32_t target_ulong;
#elif TARGET_LONG_SIZE == 8
typedef int64_t target_long;
typedef uint64_t target_ulong;
#else
#error TARGET_LONG_SIZE undefined
#endif
/* types enums definitions */
typedef enum argtype {
TYPE_NULL,
TYPE_CHAR,
TYPE_SHORT,
TYPE_INT,
TYPE_LONG,
TYPE_ULONG,
TYPE_PTRVOID, /* pointer on unknown data */
TYPE_LONGLONG,
TYPE_ULONGLONG,
TYPE_PTR,
TYPE_ARRAY,
TYPE_STRUCT,
} argtype;
#define MK_PTR(type) TYPE_PTR, type
#define MK_ARRAY(type, size) TYPE_ARRAY, size, type
#define MK_STRUCT(id) TYPE_STRUCT, id
#define THUNK_TARGET 0
#define THUNK_HOST 1
typedef struct {
/* standard struct handling */
const argtype *field_types;
int nb_fields;
int *field_offsets[2];
/* special handling */
void (*convert[2])(void *dst, const void *src);
int size[2];
int align[2];
const char *name;
} StructEntry;
/* Translation table for bitmasks... */
typedef struct bitmask_transtbl {
unsigned int x86_mask;
unsigned int x86_bits;
unsigned int alpha_mask;
unsigned int alpha_bits;
} bitmask_transtbl;
void thunk_register_struct(int id, const char *name, const argtype *types);
void thunk_register_struct_direct(int id, const char *name, StructEntry *se1);
const argtype *thunk_convert(void *dst, const void *src,
const argtype *type_ptr, int to_host);
unsigned int target_to_host_bitmask(unsigned int x86_mask,
bitmask_transtbl * trans_tbl);
unsigned int host_to_target_bitmask(unsigned int alpha_mask,
bitmask_transtbl * trans_tbl);
#endif
|
