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31e31b8a FB |
1 | #ifndef THUNK_H |
2 | #define THUNK_H | |
3 | ||
4 | #include <inttypes.h> | |
34313956 FB |
5 | #include <endian.h> |
6 | ||
7 | #ifdef HAVE_BYTESWAP_H | |
31e31b8a | 8 | #include <byteswap.h> |
34313956 FB |
9 | #else |
10 | ||
11 | #define bswap_16(x) \ | |
12 | ({ \ | |
13 | uint16_t __x = (x); \ | |
14 | ((uint16_t)( \ | |
15 | (((uint16_t)(__x) & (uint16_t)0x00ffU) << 8) | \ | |
16 | (((uint16_t)(__x) & (uint16_t)0xff00U) >> 8) )); \ | |
17 | }) | |
18 | ||
19 | #define bswap_32(x) \ | |
20 | ({ \ | |
21 | uint32_t __x = (x); \ | |
22 | ((uint32_t)( \ | |
23 | (((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \ | |
24 | (((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \ | |
25 | (((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \ | |
26 | (((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) )); \ | |
27 | }) | |
28 | ||
29 | #define bswap_64(x) \ | |
30 | ({ \ | |
31 | __u64 __x = (x); \ | |
32 | ((__u64)( \ | |
33 | (__u64)(((__u64)(__x) & (__u64)0x00000000000000ffULL) << 56) | \ | |
34 | (__u64)(((__u64)(__x) & (__u64)0x000000000000ff00ULL) << 40) | \ | |
35 | (__u64)(((__u64)(__x) & (__u64)0x0000000000ff0000ULL) << 24) | \ | |
36 | (__u64)(((__u64)(__x) & (__u64)0x00000000ff000000ULL) << 8) | \ | |
37 | (__u64)(((__u64)(__x) & (__u64)0x000000ff00000000ULL) >> 8) | \ | |
38 | (__u64)(((__u64)(__x) & (__u64)0x0000ff0000000000ULL) >> 24) | \ | |
39 | (__u64)(((__u64)(__x) & (__u64)0x00ff000000000000ULL) >> 40) | \ | |
40 | (__u64)(((__u64)(__x) & (__u64)0xff00000000000000ULL) >> 56) )); \ | |
41 | }) | |
42 | ||
43 | #endif | |
31e31b8a FB |
44 | |
45 | #undef WORDS_BIGENDIAN | |
46 | #if __BYTE_ORDER == __BIG_ENDIAN | |
47 | #define WORDS_BIGENDIAN | |
48 | #endif | |
49 | ||
34313956 | 50 | #ifdef WORDS_BIGENDIAN |
31e31b8a FB |
51 | #define BSWAP_NEEDED |
52 | #endif | |
53 | ||
54 | /* XXX: auto autoconf */ | |
55 | #define TARGET_I386 | |
56 | #define TARGET_LONG_BITS 32 | |
57 | ||
58 | ||
59 | #if defined(__alpha__) | |
60 | #define HOST_LONG_BITS 64 | |
61 | #else | |
62 | #define HOST_LONG_BITS 32 | |
63 | #endif | |
64 | ||
65 | #define TARGET_LONG_SIZE (TARGET_LONG_BITS / 8) | |
66 | #define HOST_LONG_SIZE (TARGET_LONG_BITS / 8) | |
67 | ||
68 | static inline uint16_t bswap16(uint16_t x) | |
69 | { | |
70 | return bswap_16(x); | |
71 | } | |
72 | ||
73 | static inline uint32_t bswap32(uint32_t x) | |
74 | { | |
75 | return bswap_32(x); | |
76 | } | |
77 | ||
78 | static inline uint64_t bswap64(uint64_t x) | |
79 | { | |
80 | return bswap_64(x); | |
81 | } | |
82 | ||
83 | static void inline bswap16s(uint16_t *s) | |
84 | { | |
85 | *s = bswap16(*s); | |
86 | } | |
87 | ||
88 | static void inline bswap32s(uint32_t *s) | |
89 | { | |
90 | *s = bswap32(*s); | |
91 | } | |
92 | ||
93 | static void inline bswap64s(uint64_t *s) | |
94 | { | |
95 | *s = bswap64(*s); | |
96 | } | |
97 | ||
98 | #ifdef BSWAP_NEEDED | |
99 | ||
100 | static inline uint16_t tswap16(uint16_t s) | |
101 | { | |
102 | return bswap16(s); | |
103 | } | |
104 | ||
105 | static inline uint32_t tswap32(uint32_t s) | |
106 | { | |
107 | return bswap32(s); | |
108 | } | |
109 | ||
110 | static inline uint64_t tswap64(uint64_t s) | |
111 | { | |
112 | return bswap64(s); | |
113 | } | |
114 | ||
115 | static void inline tswap16s(uint16_t *s) | |
116 | { | |
117 | *s = bswap16(*s); | |
118 | } | |
119 | ||
120 | static void inline tswap32s(uint32_t *s) | |
121 | { | |
122 | *s = bswap32(*s); | |
123 | } | |
124 | ||
125 | static void inline tswap64s(uint64_t *s) | |
126 | { | |
127 | *s = bswap64(*s); | |
128 | } | |
129 | ||
130 | #else | |
131 | ||
132 | static inline uint16_t tswap16(uint16_t s) | |
133 | { | |
134 | return s; | |
135 | } | |
136 | ||
137 | static inline uint32_t tswap32(uint32_t s) | |
138 | { | |
139 | return s; | |
140 | } | |
141 | ||
142 | static inline uint64_t tswap64(uint64_t s) | |
143 | { | |
144 | return s; | |
145 | } | |
146 | ||
147 | static void inline tswap16s(uint16_t *s) | |
148 | { | |
149 | } | |
150 | ||
151 | static void inline tswap32s(uint32_t *s) | |
152 | { | |
153 | } | |
154 | ||
155 | static void inline tswap64s(uint64_t *s) | |
156 | { | |
157 | } | |
158 | ||
159 | #endif | |
160 | ||
161 | #if TARGET_LONG_SIZE == 4 | |
162 | #define tswapl(s) tswap32(s) | |
163 | #define tswapls(s) tswap32s((uint32_t *)(s)) | |
164 | #else | |
165 | #define tswapl(s) tswap64(s) | |
166 | #define tswapls(s) tswap64s((uint64_t *)(s)) | |
167 | #endif | |
168 | ||
169 | #if TARGET_LONG_SIZE == 4 | |
170 | typedef int32_t target_long; | |
171 | typedef uint32_t target_ulong; | |
172 | #elif TARGET_LONG_SIZE == 8 | |
173 | typedef int64_t target_long; | |
174 | typedef uint64_t target_ulong; | |
175 | #else | |
176 | #error TARGET_LONG_SIZE undefined | |
177 | #endif | |
178 | ||
179 | /* types enums definitions */ | |
180 | ||
181 | typedef enum argtype { | |
182 | TYPE_NULL, | |
183 | TYPE_CHAR, | |
184 | TYPE_SHORT, | |
185 | TYPE_INT, | |
186 | TYPE_LONG, | |
187 | TYPE_ULONG, | |
188 | TYPE_PTRVOID, /* pointer on unknown data */ | |
189 | TYPE_LONGLONG, | |
190 | TYPE_ULONGLONG, | |
191 | TYPE_PTR, | |
192 | TYPE_ARRAY, | |
193 | TYPE_STRUCT, | |
194 | } argtype; | |
195 | ||
196 | #define MK_PTR(type) TYPE_PTR, type | |
197 | #define MK_ARRAY(type, size) TYPE_ARRAY, size, type | |
198 | #define MK_STRUCT(id) TYPE_STRUCT, id | |
199 | ||
200 | #define THUNK_TARGET 0 | |
201 | #define THUNK_HOST 1 | |
202 | ||
203 | typedef struct { | |
204 | /* standard struct handling */ | |
205 | const argtype *field_types; | |
206 | int nb_fields; | |
207 | int *field_offsets[2]; | |
208 | /* special handling */ | |
209 | void (*convert[2])(void *dst, const void *src); | |
210 | int size[2]; | |
211 | int align[2]; | |
212 | const char *name; | |
213 | } StructEntry; | |
214 | ||
215 | /* Translation table for bitmasks... */ | |
216 | typedef struct bitmask_transtbl { | |
217 | unsigned int x86_mask; | |
218 | unsigned int x86_bits; | |
219 | unsigned int alpha_mask; | |
220 | unsigned int alpha_bits; | |
221 | } bitmask_transtbl; | |
222 | ||
223 | void thunk_register_struct(int id, const char *name, const argtype *types); | |
224 | void thunk_register_struct_direct(int id, const char *name, StructEntry *se1); | |
225 | const argtype *thunk_convert(void *dst, const void *src, | |
226 | const argtype *type_ptr, int to_host); | |
227 | ||
228 | unsigned int target_to_host_bitmask(unsigned int x86_mask, | |
229 | bitmask_transtbl * trans_tbl); | |
230 | unsigned int host_to_target_bitmask(unsigned int alpha_mask, | |
231 | bitmask_transtbl * trans_tbl); | |
232 | ||
233 | #endif |