| /* |
| * 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 "config.h" |
| |
| #ifdef HAVE_BYTESWAP_H |
| #include <byteswap.h> |
| #else |
| |
| #define bswap_16(x) \ |
| ({ \ |
| uint16_t __x = (x); \ |
| ((uint16_t)( \ |
| (((uint16_t)(__x) & (uint16_t)0x00ffU) << 8) | \ |
| (((uint16_t)(__x) & (uint16_t)0xff00U) >> 8) )); \ |
| }) |
| |
| #define bswap_32(x) \ |
| ({ \ |
| uint32_t __x = (x); \ |
| ((uint32_t)( \ |
| (((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \ |
| (((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \ |
| (((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \ |
| (((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) )); \ |
| }) |
| |
| #define bswap_64(x) \ |
| ({ \ |
| uint64_t __x = (x); \ |
| ((uint64_t)( \ |
| (uint64_t)(((uint64_t)(__x) & (uint64_t)0x00000000000000ffULL) << 56) | \ |
| (uint64_t)(((uint64_t)(__x) & (uint64_t)0x000000000000ff00ULL) << 40) | \ |
| (uint64_t)(((uint64_t)(__x) & (uint64_t)0x0000000000ff0000ULL) << 24) | \ |
| (uint64_t)(((uint64_t)(__x) & (uint64_t)0x00000000ff000000ULL) << 8) | \ |
| (uint64_t)(((uint64_t)(__x) & (uint64_t)0x000000ff00000000ULL) >> 8) | \ |
| (uint64_t)(((uint64_t)(__x) & (uint64_t)0x0000ff0000000000ULL) >> 24) | \ |
| (uint64_t)(((uint64_t)(__x) & (uint64_t)0x00ff000000000000ULL) >> 40) | \ |
| (uint64_t)(((uint64_t)(__x) & (uint64_t)0xff00000000000000ULL) >> 56) )); \ |
| }) |
| |
| #endif |
| |
| #ifdef WORDS_BIGENDIAN |
| #define BSWAP_NEEDED |
| #endif |
| |
| /* XXX: autoconf */ |
| #define TARGET_I386 |
| #define TARGET_LONG_BITS 32 |
| |
| |
| #if defined(__alpha__) || defined (__ia64__) |
| #define HOST_LONG_BITS 64 |
| #else |
| #define HOST_LONG_BITS 32 |
| #endif |
| |
| #define TARGET_LONG_SIZE (TARGET_LONG_BITS / 8) |
| #define HOST_LONG_SIZE (HOST_LONG_BITS / 8) |
| |
| static inline uint16_t bswap16(uint16_t x) |
| { |
| return bswap_16(x); |
| } |
| |
| static inline uint32_t bswap32(uint32_t x) |
| { |
| return bswap_32(x); |
| } |
| |
| static inline uint64_t bswap64(uint64_t x) |
| { |
| return bswap_64(x); |
| } |
| |
| static inline void bswap16s(uint16_t *s) |
| { |
| *s = bswap16(*s); |
| } |
| |
| static inline void bswap32s(uint32_t *s) |
| { |
| *s = bswap32(*s); |
| } |
| |
| static inline void bswap64s(uint64_t *s) |
| { |
| *s = bswap64(*s); |
| } |
| |
| #ifdef BSWAP_NEEDED |
| |
| static inline uint16_t tswap16(uint16_t s) |
| { |
| return bswap16(s); |
| } |
| |
| static inline uint32_t tswap32(uint32_t s) |
| { |
| return bswap32(s); |
| } |
| |
| static inline uint64_t tswap64(uint64_t s) |
| { |
| return bswap64(s); |
| } |
| |
| static inline void tswap16s(uint16_t *s) |
| { |
| *s = bswap16(*s); |
| } |
| |
| static inline void tswap32s(uint32_t *s) |
| { |
| *s = bswap32(*s); |
| } |
| |
| static inline void tswap64s(uint64_t *s) |
| { |
| *s = bswap64(*s); |
| } |
| |
| #else |
| |
| static inline uint16_t tswap16(uint16_t s) |
| { |
| return s; |
| } |
| |
| static inline uint32_t tswap32(uint32_t s) |
| { |
| return s; |
| } |
| |
| static inline uint64_t tswap64(uint64_t s) |
| { |
| return s; |
| } |
| |
| static inline void tswap16s(uint16_t *s) |
| { |
| } |
| |
| static inline void tswap32s(uint32_t *s) |
| { |
| } |
| |
| static inline void tswap64s(uint64_t *s) |
| { |
| } |
| |
| #endif |
| |
| #if TARGET_LONG_SIZE == 4 |
| #define tswapl(s) tswap32(s) |
| #define tswapls(s) tswap32s((uint32_t *)(s)) |
| #else |
| #define tswapl(s) tswap64(s) |
| #define tswapls(s) tswap64s((uint64_t *)(s)) |
| #endif |
| |
| #if TARGET_LONG_SIZE == 4 |
| typedef int32_t target_long; |
| typedef uint32_t target_ulong; |
| #elif TARGET_LONG_SIZE == 8 |
| typedef int64_t target_long; |
| typedef uint64_t target_ulong; |
| #else |
| #error TARGET_LONG_SIZE undefined |
| #endif |
| |
| /* 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 1 |
| |
| typedef 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); |
| |
| 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 |