2 * Generic thunking code to convert data between host and target CPU
4 * Copyright (c) 2003 Fabrice Bellard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 /* types enums definitions */
28 typedef enum argtype {
35 TYPE_PTRVOID, /* pointer on unknown data */
43 #define MK_PTR(type) TYPE_PTR, type
44 #define MK_ARRAY(type, size) TYPE_ARRAY, size, type
45 #define MK_STRUCT(id) TYPE_STRUCT, id
47 #define THUNK_TARGET 0
51 /* standard struct handling */
52 const argtype *field_types;
54 int *field_offsets[2];
55 /* special handling */
56 void (*convert[2])(void *dst, const void *src);
62 /* Translation table for bitmasks... */
63 typedef struct bitmask_transtbl {
64 unsigned int x86_mask;
65 unsigned int x86_bits;
66 unsigned int alpha_mask;
67 unsigned int alpha_bits;
70 void thunk_register_struct(int id, const char *name, const argtype *types);
71 void thunk_register_struct_direct(int id, const char *name, StructEntry *se1);
72 const argtype *thunk_convert(void *dst, const void *src,
73 const argtype *type_ptr, int to_host);
74 #ifndef NO_THUNK_TYPE_SIZE
76 extern StructEntry struct_entries[];
78 static inline int thunk_type_size(const argtype *type_ptr, int is_host)
81 const StructEntry *se;
99 return HOST_LONG_SIZE;
101 return TARGET_LONG_SIZE;
106 return size * thunk_type_size(type_ptr + 2, is_host);
108 se = struct_entries + type_ptr[1];
109 return se->size[is_host];
115 static inline int thunk_type_align(const argtype *type_ptr, int is_host)
118 const StructEntry *se;
136 return HOST_LONG_SIZE;
138 return TARGET_LONG_SIZE;
142 return thunk_type_align(type_ptr + 2, is_host);
144 se = struct_entries + type_ptr[1];
145 return se->align[is_host];
151 #endif /* NO_THUNK_TYPE_SIZE */
153 unsigned int target_to_host_bitmask(unsigned int x86_mask,
154 bitmask_transtbl * trans_tbl);
155 unsigned int host_to_target_bitmask(unsigned int alpha_mask,
156 bitmask_transtbl * trans_tbl);