/* *  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 "cpu.h"/* 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   1typedef 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);#ifndef NO_THUNK_TYPE_SIZEextern StructEntry struct_entries[];int thunk_type_size_array(const argtype *type_ptr, int is_host);int thunk_type_align_array(const argtype *type_ptr, int is_host);static inline int thunk_type_size(const argtype *type_ptr, int is_host){    int type, size;    const StructEntry *se;    type = *type_ptr;    switch(type) {    case TYPE_CHAR:        return 1;    case TYPE_SHORT:        return 2;    case TYPE_INT:        return 4;    case TYPE_LONGLONG:    case TYPE_ULONGLONG:        return 8;    case TYPE_LONG:    case TYPE_ULONG:    case TYPE_PTRVOID:    case TYPE_PTR:        if (is_host) {            return HOST_LONG_SIZE;        } else {            return TARGET_ABI_BITS / 8;        }        break;    case TYPE_ARRAY:        size = type_ptr[1];        return size * thunk_type_size_array(type_ptr + 2, is_host);    case TYPE_STRUCT:        se = struct_entries + type_ptr[1];        return se->size[is_host];    default:        return -1;    }}static inline int thunk_type_align(const argtype *type_ptr, int is_host){    int type;    const StructEntry *se;    type = *type_ptr;    switch(type) {    case TYPE_CHAR:        return 1;    case TYPE_SHORT:        return 2;    case TYPE_INT:        return 4;    case TYPE_LONGLONG:    case TYPE_ULONGLONG:        return 8;    case TYPE_LONG:    case TYPE_ULONG:    case TYPE_PTRVOID:    case TYPE_PTR:        if (is_host) {            return HOST_LONG_SIZE;        } else {            return TARGET_ABI_BITS / 8;        }        break;    case TYPE_ARRAY:        return thunk_type_align_array(type_ptr + 2, is_host);    case TYPE_STRUCT:        se = struct_entries + type_ptr[1];        return se->align[is_host];    default:        return -1;    }}#endif /* NO_THUNK_TYPE_SIZE */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