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