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1 | 3ef693a0 | bellard | /*
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2 | 3ef693a0 | bellard | * Generic thunking code to convert data between host and target CPU
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3 | 3ef693a0 | bellard | *
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4 | 3ef693a0 | bellard | * Copyright (c) 2003 Fabrice Bellard
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5 | 3ef693a0 | bellard | *
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6 | 3ef693a0 | bellard | * This library is free software; you can redistribute it and/or
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7 | 3ef693a0 | bellard | * modify it under the terms of the GNU Lesser General Public
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8 | 3ef693a0 | bellard | * License as published by the Free Software Foundation; either
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9 | 3ef693a0 | bellard | * version 2 of the License, or (at your option) any later version.
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10 | 3ef693a0 | bellard | *
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11 | 3ef693a0 | bellard | * This library is distributed in the hope that it will be useful,
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12 | 3ef693a0 | bellard | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | 3ef693a0 | bellard | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | 3ef693a0 | bellard | * Lesser General Public License for more details.
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15 | 3ef693a0 | bellard | *
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16 | 3ef693a0 | bellard | * You should have received a copy of the GNU Lesser General Public
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17 | 3ef693a0 | bellard | * License along with this library; if not, write to the Free Software
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18 | 3ef693a0 | bellard | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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19 | 3ef693a0 | bellard | */
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20 | 31e31b8a | bellard | #ifndef THUNK_H
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21 | 31e31b8a | bellard | #define THUNK_H
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22 | 31e31b8a | bellard | |
23 | 31e31b8a | bellard | #include <inttypes.h> |
24 | 7d13299d | bellard | #include "config.h" |
25 | 34313956 | bellard | |
26 | abcd5da7 | bellard | #include "bswap.h" |
27 | 31e31b8a | bellard | |
28 | 24374901 | bellard | #if defined(WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
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29 | 31e31b8a | bellard | #define BSWAP_NEEDED
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30 | 31e31b8a | bellard | #endif
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31 | 31e31b8a | bellard | |
32 | 367e86e8 | bellard | /* XXX: autoconf */
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33 | 31e31b8a | bellard | #define TARGET_LONG_BITS 32 |
34 | 31e31b8a | bellard | |
35 | 31e31b8a | bellard | #define TARGET_LONG_SIZE (TARGET_LONG_BITS / 8) |
36 | 31e31b8a | bellard | |
37 | 31e31b8a | bellard | #ifdef BSWAP_NEEDED
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38 | 31e31b8a | bellard | |
39 | 31e31b8a | bellard | static inline uint16_t tswap16(uint16_t s) |
40 | 31e31b8a | bellard | { |
41 | 31e31b8a | bellard | return bswap16(s);
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42 | 31e31b8a | bellard | } |
43 | 31e31b8a | bellard | |
44 | 31e31b8a | bellard | static inline uint32_t tswap32(uint32_t s) |
45 | 31e31b8a | bellard | { |
46 | 31e31b8a | bellard | return bswap32(s);
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47 | 31e31b8a | bellard | } |
48 | 31e31b8a | bellard | |
49 | 31e31b8a | bellard | static inline uint64_t tswap64(uint64_t s) |
50 | 31e31b8a | bellard | { |
51 | 31e31b8a | bellard | return bswap64(s);
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52 | 31e31b8a | bellard | } |
53 | 31e31b8a | bellard | |
54 | bb0ebb1f | bellard | static inline void tswap16s(uint16_t *s) |
55 | 31e31b8a | bellard | { |
56 | 31e31b8a | bellard | *s = bswap16(*s); |
57 | 31e31b8a | bellard | } |
58 | 31e31b8a | bellard | |
59 | bb0ebb1f | bellard | static inline void tswap32s(uint32_t *s) |
60 | 31e31b8a | bellard | { |
61 | 31e31b8a | bellard | *s = bswap32(*s); |
62 | 31e31b8a | bellard | } |
63 | 31e31b8a | bellard | |
64 | bb0ebb1f | bellard | static inline void tswap64s(uint64_t *s) |
65 | 31e31b8a | bellard | { |
66 | 31e31b8a | bellard | *s = bswap64(*s); |
67 | 31e31b8a | bellard | } |
68 | 31e31b8a | bellard | |
69 | 31e31b8a | bellard | #else
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70 | 31e31b8a | bellard | |
71 | 31e31b8a | bellard | static inline uint16_t tswap16(uint16_t s) |
72 | 31e31b8a | bellard | { |
73 | 31e31b8a | bellard | return s;
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74 | 31e31b8a | bellard | } |
75 | 31e31b8a | bellard | |
76 | 31e31b8a | bellard | static inline uint32_t tswap32(uint32_t s) |
77 | 31e31b8a | bellard | { |
78 | 31e31b8a | bellard | return s;
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79 | 31e31b8a | bellard | } |
80 | 31e31b8a | bellard | |
81 | 31e31b8a | bellard | static inline uint64_t tswap64(uint64_t s) |
82 | 31e31b8a | bellard | { |
83 | 31e31b8a | bellard | return s;
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84 | 31e31b8a | bellard | } |
85 | 31e31b8a | bellard | |
86 | bb0ebb1f | bellard | static inline void tswap16s(uint16_t *s) |
87 | 31e31b8a | bellard | { |
88 | 31e31b8a | bellard | } |
89 | 31e31b8a | bellard | |
90 | bb0ebb1f | bellard | static inline void tswap32s(uint32_t *s) |
91 | 31e31b8a | bellard | { |
92 | 31e31b8a | bellard | } |
93 | 31e31b8a | bellard | |
94 | bb0ebb1f | bellard | static inline void tswap64s(uint64_t *s) |
95 | 31e31b8a | bellard | { |
96 | 31e31b8a | bellard | } |
97 | 31e31b8a | bellard | |
98 | 31e31b8a | bellard | #endif
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99 | 31e31b8a | bellard | |
100 | 31e31b8a | bellard | #if TARGET_LONG_SIZE == 4 |
101 | 31e31b8a | bellard | #define tswapl(s) tswap32(s)
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102 | 31e31b8a | bellard | #define tswapls(s) tswap32s((uint32_t *)(s))
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103 | 31e31b8a | bellard | #else
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104 | 31e31b8a | bellard | #define tswapl(s) tswap64(s)
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105 | 31e31b8a | bellard | #define tswapls(s) tswap64s((uint64_t *)(s))
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106 | 31e31b8a | bellard | #endif
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107 | 31e31b8a | bellard | |
108 | 31e31b8a | bellard | #if TARGET_LONG_SIZE == 4 |
109 | 31e31b8a | bellard | typedef int32_t target_long;
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110 | 31e31b8a | bellard | typedef uint32_t target_ulong;
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111 | 31e31b8a | bellard | #elif TARGET_LONG_SIZE == 8 |
112 | 31e31b8a | bellard | typedef int64_t target_long;
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113 | 31e31b8a | bellard | typedef uint64_t target_ulong;
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114 | 31e31b8a | bellard | #else
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115 | 31e31b8a | bellard | #error TARGET_LONG_SIZE undefined
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116 | 31e31b8a | bellard | #endif
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117 | 31e31b8a | bellard | |
118 | 31e31b8a | bellard | /* types enums definitions */
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119 | 31e31b8a | bellard | |
120 | 31e31b8a | bellard | typedef enum argtype { |
121 | 31e31b8a | bellard | TYPE_NULL, |
122 | 31e31b8a | bellard | TYPE_CHAR, |
123 | 31e31b8a | bellard | TYPE_SHORT, |
124 | 31e31b8a | bellard | TYPE_INT, |
125 | 31e31b8a | bellard | TYPE_LONG, |
126 | 31e31b8a | bellard | TYPE_ULONG, |
127 | 31e31b8a | bellard | TYPE_PTRVOID, /* pointer on unknown data */
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128 | 31e31b8a | bellard | TYPE_LONGLONG, |
129 | 31e31b8a | bellard | TYPE_ULONGLONG, |
130 | 31e31b8a | bellard | TYPE_PTR, |
131 | 31e31b8a | bellard | TYPE_ARRAY, |
132 | 31e31b8a | bellard | TYPE_STRUCT, |
133 | 31e31b8a | bellard | } argtype; |
134 | 31e31b8a | bellard | |
135 | 31e31b8a | bellard | #define MK_PTR(type) TYPE_PTR, type
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136 | 31e31b8a | bellard | #define MK_ARRAY(type, size) TYPE_ARRAY, size, type
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137 | 31e31b8a | bellard | #define MK_STRUCT(id) TYPE_STRUCT, id
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138 | 31e31b8a | bellard | |
139 | 31e31b8a | bellard | #define THUNK_TARGET 0 |
140 | 31e31b8a | bellard | #define THUNK_HOST 1 |
141 | 31e31b8a | bellard | |
142 | 31e31b8a | bellard | typedef struct { |
143 | 31e31b8a | bellard | /* standard struct handling */
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144 | 31e31b8a | bellard | const argtype *field_types;
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145 | 31e31b8a | bellard | int nb_fields;
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146 | 31e31b8a | bellard | int *field_offsets[2]; |
147 | 31e31b8a | bellard | /* special handling */
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148 | 31e31b8a | bellard | void (*convert[2])(void *dst, const void *src); |
149 | 31e31b8a | bellard | int size[2]; |
150 | 31e31b8a | bellard | int align[2]; |
151 | 31e31b8a | bellard | const char *name; |
152 | 31e31b8a | bellard | } StructEntry; |
153 | 31e31b8a | bellard | |
154 | 31e31b8a | bellard | /* Translation table for bitmasks... */
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155 | 31e31b8a | bellard | typedef struct bitmask_transtbl { |
156 | 31e31b8a | bellard | unsigned int x86_mask; |
157 | 31e31b8a | bellard | unsigned int x86_bits; |
158 | 31e31b8a | bellard | unsigned int alpha_mask; |
159 | 31e31b8a | bellard | unsigned int alpha_bits; |
160 | 31e31b8a | bellard | } bitmask_transtbl; |
161 | 31e31b8a | bellard | |
162 | 31e31b8a | bellard | void thunk_register_struct(int id, const char *name, const argtype *types); |
163 | 31e31b8a | bellard | void thunk_register_struct_direct(int id, const char *name, StructEntry *se1); |
164 | 31e31b8a | bellard | const argtype *thunk_convert(void *dst, const void *src, |
165 | 31e31b8a | bellard | const argtype *type_ptr, int to_host); |
166 | 0ad041d4 | bellard | #ifndef NO_THUNK_TYPE_SIZE
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167 | 31e31b8a | bellard | |
168 | 24374901 | bellard | extern StructEntry struct_entries[];
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169 | 24374901 | bellard | |
170 | 24374901 | bellard | static inline int thunk_type_size(const argtype *type_ptr, int is_host) |
171 | 24374901 | bellard | { |
172 | 24374901 | bellard | int type, size;
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173 | 24374901 | bellard | const StructEntry *se;
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174 | 24374901 | bellard | |
175 | 24374901 | bellard | type = *type_ptr; |
176 | 24374901 | bellard | switch(type) {
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177 | 24374901 | bellard | case TYPE_CHAR:
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178 | 24374901 | bellard | return 1; |
179 | 24374901 | bellard | case TYPE_SHORT:
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180 | 24374901 | bellard | return 2; |
181 | 24374901 | bellard | case TYPE_INT:
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182 | 24374901 | bellard | return 4; |
183 | 24374901 | bellard | case TYPE_LONGLONG:
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184 | 24374901 | bellard | case TYPE_ULONGLONG:
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185 | 24374901 | bellard | return 8; |
186 | 24374901 | bellard | case TYPE_LONG:
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187 | 24374901 | bellard | case TYPE_ULONG:
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188 | 24374901 | bellard | case TYPE_PTRVOID:
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189 | 24374901 | bellard | case TYPE_PTR:
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190 | 24374901 | bellard | if (is_host) {
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191 | 24374901 | bellard | return HOST_LONG_SIZE;
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192 | 24374901 | bellard | } else {
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193 | 24374901 | bellard | return TARGET_LONG_SIZE;
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194 | 24374901 | bellard | } |
195 | 24374901 | bellard | break;
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196 | 24374901 | bellard | case TYPE_ARRAY:
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197 | 24374901 | bellard | size = type_ptr[1];
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198 | 24374901 | bellard | return size * thunk_type_size(type_ptr + 2, is_host); |
199 | 24374901 | bellard | case TYPE_STRUCT:
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200 | 24374901 | bellard | se = struct_entries + type_ptr[1];
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201 | 24374901 | bellard | return se->size[is_host];
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202 | 24374901 | bellard | default:
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203 | 24374901 | bellard | return -1; |
204 | 24374901 | bellard | } |
205 | 24374901 | bellard | } |
206 | 24374901 | bellard | |
207 | 24374901 | bellard | static inline int thunk_type_align(const argtype *type_ptr, int is_host) |
208 | 24374901 | bellard | { |
209 | 24374901 | bellard | int type;
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210 | 24374901 | bellard | const StructEntry *se;
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211 | 24374901 | bellard | |
212 | 24374901 | bellard | type = *type_ptr; |
213 | 24374901 | bellard | switch(type) {
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214 | 24374901 | bellard | case TYPE_CHAR:
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215 | 24374901 | bellard | return 1; |
216 | 24374901 | bellard | case TYPE_SHORT:
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217 | 24374901 | bellard | return 2; |
218 | 24374901 | bellard | case TYPE_INT:
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219 | 24374901 | bellard | return 4; |
220 | 24374901 | bellard | case TYPE_LONGLONG:
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221 | 24374901 | bellard | case TYPE_ULONGLONG:
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222 | 24374901 | bellard | return 8; |
223 | 24374901 | bellard | case TYPE_LONG:
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224 | 24374901 | bellard | case TYPE_ULONG:
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225 | 24374901 | bellard | case TYPE_PTRVOID:
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226 | 24374901 | bellard | case TYPE_PTR:
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227 | 24374901 | bellard | if (is_host) {
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228 | 24374901 | bellard | return HOST_LONG_SIZE;
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229 | 24374901 | bellard | } else {
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230 | 24374901 | bellard | return TARGET_LONG_SIZE;
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231 | 24374901 | bellard | } |
232 | 24374901 | bellard | break;
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233 | 24374901 | bellard | case TYPE_ARRAY:
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234 | 24374901 | bellard | return thunk_type_align(type_ptr + 2, is_host); |
235 | 24374901 | bellard | case TYPE_STRUCT:
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236 | 24374901 | bellard | se = struct_entries + type_ptr[1];
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237 | 24374901 | bellard | return se->align[is_host];
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238 | 24374901 | bellard | default:
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239 | 24374901 | bellard | return -1; |
240 | 24374901 | bellard | } |
241 | 24374901 | bellard | } |
242 | 24374901 | bellard | |
243 | 0ad041d4 | bellard | #endif /* NO_THUNK_TYPE_SIZE */ |
244 | 0ad041d4 | bellard | |
245 | 31e31b8a | bellard | unsigned int target_to_host_bitmask(unsigned int x86_mask, |
246 | 31e31b8a | bellard | bitmask_transtbl * trans_tbl); |
247 | 31e31b8a | bellard | unsigned int host_to_target_bitmask(unsigned int alpha_mask, |
248 | 31e31b8a | bellard | bitmask_transtbl * trans_tbl); |
249 | 31e31b8a | bellard | |
250 | 31e31b8a | bellard | #endif |