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grub/include/grub/types.h
Anton Blanchard bbb39a458b Fix btrfs endianness handling. 
* grub-core/fs/btrfs.c (key_cmp): Use grub_le_to_cpu for clarity.
	(lower_bound): Make root uint64_t. Use root in le.
	(grub_btrfs_read_logical): Fix template key init. Fix address byteswap.
	(find_path): Fix template key init.
	(grub_btrfs_dir): Fix mtime byteswap.
	* include/grub/types.h (grub_cpu_to_le64_compile_time): New macro.

	Also-By: Vladimir Serbinenko <phcoder@gmail.com>
2012-03-31 18:45:13 +02:00

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9.6 KiB
C
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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002,2005,2006,2007,2008,2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_TYPES_HEADER
#define GRUB_TYPES_HEADER 1
#include <config.h>
#ifndef GRUB_UTIL
#include <grub/cpu/types.h>
#endif
#ifdef GRUB_UTIL
# define GRUB_CPU_SIZEOF_VOID_P SIZEOF_VOID_P
# define GRUB_CPU_SIZEOF_LONG SIZEOF_LONG
# ifdef WORDS_BIGENDIAN
# define GRUB_CPU_WORDS_BIGENDIAN 1
# else
# undef GRUB_CPU_WORDS_BIGENDIAN
# endif
#else /* ! GRUB_UTIL */
# define GRUB_CPU_SIZEOF_VOID_P GRUB_TARGET_SIZEOF_VOID_P
# define GRUB_CPU_SIZEOF_LONG GRUB_TARGET_SIZEOF_LONG
# ifdef GRUB_TARGET_WORDS_BIGENDIAN
# define GRUB_CPU_WORDS_BIGENDIAN 1
# else
# undef GRUB_CPU_WORDS_BIGENDIAN
# endif
#endif /* ! GRUB_UTIL */
#if GRUB_CPU_SIZEOF_VOID_P != GRUB_CPU_SIZEOF_LONG
# error "This architecture is not supported because sizeof(void *) != sizeof(long)"
#endif
#if GRUB_CPU_SIZEOF_VOID_P != 4 && GRUB_CPU_SIZEOF_VOID_P != 8
# error "This architecture is not supported because sizeof(void *) != 4 and sizeof(void *) != 8"
#endif
#if !defined (GRUB_UTIL) & !defined (GRUB_TARGET_WORDSIZE)
# if GRUB_TARGET_SIZEOF_VOID_P == 4
# define GRUB_TARGET_WORDSIZE 32
# elif GRUB_TARGET_SIZEOF_VOID_P == 8
# define GRUB_TARGET_WORDSIZE 64
# endif
#endif
/* Define various wide integers. */
typedef signed char grub_int8_t;
typedef short grub_int16_t;
typedef int grub_int32_t;
#if GRUB_CPU_SIZEOF_LONG == 8
typedef long grub_int64_t;
#else
typedef long long grub_int64_t;
#endif
typedef unsigned char grub_uint8_t;
typedef unsigned short grub_uint16_t;
typedef unsigned grub_uint32_t;
# define PRIxGRUB_UINT32_T "x"
# define PRIuGRUB_UINT32_T "u"
#if GRUB_CPU_SIZEOF_LONG == 8
typedef unsigned long grub_uint64_t;
# define PRIxGRUB_UINT64_T "lx"
# define PRIuGRUB_UINT64_T "lu"
#else
typedef unsigned long long grub_uint64_t;
# define PRIxGRUB_UINT64_T "llx"
# define PRIuGRUB_UINT64_T "llu"
#endif
/* Misc types. */
#if GRUB_CPU_SIZEOF_VOID_P == 8
typedef grub_uint64_t grub_addr_t;
typedef grub_uint64_t grub_size_t;
typedef grub_int64_t grub_ssize_t;
# if GRUB_CPU_SIZEOF_LONG == 8
# define PRIxGRUB_SIZE "lx"
# define PRIxGRUB_ADDR "lx"
# define PRIuGRUB_SIZE "lu"
# define PRIdGRUB_SSIZE "ld"
# else
# define PRIxGRUB_SIZE "llx"
# define PRIxGRUB_ADDR "llx"
# define PRIuGRUB_SIZE "llu"
# define PRIdGRUB_SSIZE "lld"
# endif
#else
typedef grub_uint32_t grub_addr_t;
typedef grub_uint32_t grub_size_t;
typedef grub_int32_t grub_ssize_t;
# define PRIxGRUB_SIZE "x"
# define PRIxGRUB_ADDR "x"
# define PRIuGRUB_SIZE "u"
# define PRIdGRUB_SSIZE "d"
#endif
#define GRUB_UCHAR_MAX 0xFF
#define GRUB_USHRT_MAX 65535
#define GRUB_SHRT_MAX 0x7fff
#define GRUB_UINT_MAX 4294967295U
#define GRUB_INT_MAX 0x7fffffff
#if GRUB_CPU_SIZEOF_LONG == 8
# define GRUB_ULONG_MAX 18446744073709551615UL
# define GRUB_LONG_MAX 9223372036854775807L
# define GRUB_LONG_MIN (-9223372036854775807L - 1)
#else
# define GRUB_ULONG_MAX 4294967295UL
# define GRUB_LONG_MAX 2147483647L
# define GRUB_LONG_MIN (-2147483647L - 1)
#endif
typedef grub_uint64_t grub_properly_aligned_t;
#define GRUB_PROPERLY_ALIGNED_ARRAY(name, size) grub_properly_aligned_t name[((size) + sizeof (grub_properly_aligned_t) - 1) / sizeof (grub_properly_aligned_t)]
/* The type for representing a file offset. */
typedef grub_uint64_t grub_off_t;
/* The type for representing a disk block address. */
typedef grub_uint64_t grub_disk_addr_t;
/* Byte-orders. */
#define grub_swap_bytes16(x) \
({ \
grub_uint16_t _x = (x); \
(grub_uint16_t) ((_x << 8) | (_x >> 8)); \
})
#define grub_swap_bytes16_compile_time(x) ((((x) & 0xff) << 8) | (((x) & 0xff00) >> 8))
#define grub_swap_bytes32_compile_time(x) ((((x) & 0xff) << 24) | (((x) & 0xff00) << 8) | (((x) & 0xff0000) >> 8) | (((x) & 0xff000000UL) >> 24))
#define grub_swap_bytes64_compile_time(x) \
({ \
grub_uint64_t _x = (x); \
(grub_uint64_t) ((_x << 56) \
| ((_x & (grub_uint64_t) 0xFF00ULL) << 40) \
| ((_x & (grub_uint64_t) 0xFF0000ULL) << 24) \
| ((_x & (grub_uint64_t) 0xFF000000ULL) << 8) \
| ((_x & (grub_uint64_t) 0xFF00000000ULL) >> 8) \
| ((_x & (grub_uint64_t) 0xFF0000000000ULL) >> 24) \
| ((_x & (grub_uint64_t) 0xFF000000000000ULL) >> 40) \
| (_x >> 56)); \
})
#if defined(__GNUC__) && (__GNUC__ > 3) && (__GNUC__ > 4 || __GNUC_MINOR__ >= 3)
static inline grub_uint32_t grub_swap_bytes32(grub_uint32_t x)
{
return __builtin_bswap32(x);
}
static inline grub_uint64_t grub_swap_bytes64(grub_uint64_t x)
{
return __builtin_bswap64(x);
}
#else /* not gcc 4.3 or newer */
#define grub_swap_bytes32(x) \
({ \
grub_uint32_t _x = (x); \
(grub_uint32_t) ((_x << 24) \
| ((_x & (grub_uint32_t) 0xFF00UL) << 8) \
| ((_x & (grub_uint32_t) 0xFF0000UL) >> 8) \
| (_x >> 24)); \
})
#define grub_swap_bytes64(x) \
({ \
grub_uint64_t _x = (x); \
(grub_uint64_t) ((_x << 56) \
| ((_x & (grub_uint64_t) 0xFF00ULL) << 40) \
| ((_x & (grub_uint64_t) 0xFF0000ULL) << 24) \
| ((_x & (grub_uint64_t) 0xFF000000ULL) << 8) \
| ((_x & (grub_uint64_t) 0xFF00000000ULL) >> 8) \
| ((_x & (grub_uint64_t) 0xFF0000000000ULL) >> 24) \
| ((_x & (grub_uint64_t) 0xFF000000000000ULL) >> 40) \
| (_x >> 56)); \
})
#endif /* not gcc 4.3 or newer */
#ifdef GRUB_CPU_WORDS_BIGENDIAN
# define grub_cpu_to_le16(x) grub_swap_bytes16(x)
# define grub_cpu_to_le32(x) grub_swap_bytes32(x)
# define grub_cpu_to_le64(x) grub_swap_bytes64(x)
# define grub_le_to_cpu16(x) grub_swap_bytes16(x)
# define grub_le_to_cpu32(x) grub_swap_bytes32(x)
# define grub_le_to_cpu64(x) grub_swap_bytes64(x)
# define grub_cpu_to_be16(x) ((grub_uint16_t) (x))
# define grub_cpu_to_be32(x) ((grub_uint32_t) (x))
# define grub_cpu_to_be64(x) ((grub_uint64_t) (x))
# define grub_be_to_cpu16(x) ((grub_uint16_t) (x))
# define grub_be_to_cpu32(x) ((grub_uint32_t) (x))
# define grub_be_to_cpu64(x) ((grub_uint64_t) (x))
# define grub_cpu_to_be16_compile_time(x) ((grub_uint16_t) (x))
# define grub_cpu_to_be32_compile_time(x) ((grub_uint32_t) (x))
# define grub_cpu_to_be64_compile_time(x) ((grub_uint64_t) (x))
# define grub_be_to_cpu64_compile_time(x) ((grub_uint64_t) (x))
# define grub_cpu_to_le32_compile_time(x) grub_swap_bytes32_compile_time(x)
# define grub_cpu_to_le64_compile_time(x) grub_swap_bytes64_compile_time(x)
# define grub_cpu_to_le16_compile_time(x) grub_swap_bytes16_compile_time(x)
#else /* ! WORDS_BIGENDIAN */
# define grub_cpu_to_le16(x) ((grub_uint16_t) (x))
# define grub_cpu_to_le32(x) ((grub_uint32_t) (x))
# define grub_cpu_to_le64(x) ((grub_uint64_t) (x))
# define grub_le_to_cpu16(x) ((grub_uint16_t) (x))
# define grub_le_to_cpu32(x) ((grub_uint32_t) (x))
# define grub_le_to_cpu64(x) ((grub_uint64_t) (x))
# define grub_cpu_to_be16(x) grub_swap_bytes16(x)
# define grub_cpu_to_be32(x) grub_swap_bytes32(x)
# define grub_cpu_to_be64(x) grub_swap_bytes64(x)
# define grub_be_to_cpu16(x) grub_swap_bytes16(x)
# define grub_be_to_cpu32(x) grub_swap_bytes32(x)
# define grub_be_to_cpu64(x) grub_swap_bytes64(x)
# define grub_cpu_to_be16_compile_time(x) grub_swap_bytes16_compile_time(x)
# define grub_cpu_to_be32_compile_time(x) grub_swap_bytes32_compile_time(x)
# define grub_cpu_to_be64_compile_time(x) grub_swap_bytes64_compile_time(x)
# define grub_be_to_cpu64_compile_time(x) grub_swap_bytes64_compile_time(x)
# define grub_cpu_to_le16_compile_time(x) ((grub_uint16_t) (x))
# define grub_cpu_to_le32_compile_time(x) ((grub_uint32_t) (x))
# define grub_cpu_to_le64_compile_time(x) ((grub_uint64_t) (x))
#endif /* ! WORDS_BIGENDIAN */
static inline grub_uint16_t grub_get_unaligned16 (const void *ptr)
{
struct grub_unaligned_uint16_t
{
grub_uint16_t d;
} __attribute__ ((packed));
const struct grub_unaligned_uint16_t *dd
= (const struct grub_unaligned_uint16_t *) ptr;
return dd->d;
}
static inline void grub_set_unaligned16 (void *ptr, grub_uint16_t val)
{
struct grub_unaligned_uint16_t
{
grub_uint16_t d;
} __attribute__ ((packed));
struct grub_unaligned_uint16_t *dd = (struct grub_unaligned_uint16_t *) ptr;
dd->d = val;
}
static inline grub_uint32_t grub_get_unaligned32 (const void *ptr)
{
struct grub_unaligned_uint32_t
{
grub_uint32_t d;
} __attribute__ ((packed));
const struct grub_unaligned_uint32_t *dd
= (const struct grub_unaligned_uint32_t *) ptr;
return dd->d;
}
static inline void grub_set_unaligned32 (void *ptr, grub_uint32_t val)
{
struct grub_unaligned_uint32_t
{
grub_uint32_t d;
} __attribute__ ((packed));
struct grub_unaligned_uint32_t *dd = (struct grub_unaligned_uint32_t *) ptr;
dd->d = val;
}
static inline grub_uint64_t grub_get_unaligned64 (const void *ptr)
{
struct grub_unaligned_uint64_t
{
grub_uint64_t d;
} __attribute__ ((packed));
const struct grub_unaligned_uint64_t *dd
= (const struct grub_unaligned_uint64_t *)ptr;
return dd->d;
}
#endif /* ! GRUB_TYPES_HEADER */
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