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*: eliminate more aliasing warnings

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2010-02-04 18:41:18 +01:00
parent 98a4c7cf3d
commit 12ca080a1c
6 changed files with 40 additions and 36 deletions
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12
include/platform.h
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@ -201,10 +201,14 @@
* a lvalue. This makes it more likely to not swap them by mistake
*/
#if defined(i386) || defined(__x86_64__)
# define move_from_unaligned_int(v, intp) ((v) = *(int*)(intp))
# define move_from_unaligned16(v, u16p) ((v) = *(uint16_t*)(u16p))
# define move_from_unaligned32(v, u32p) ((v) = *(uint32_t*)(u32p))
# define move_to_unaligned32(u32p, v) (*(uint32_t*)(u32p) = (v))
# include <stdint.h>
typedef int bb__aliased_int FIX_ALIASING;
typedef uint16_t bb__aliased_uint16_t FIX_ALIASING;
typedef uint32_t bb__aliased_uint32_t FIX_ALIASING;
# define move_from_unaligned_int(v, intp) ((v) = *(bb__aliased_int*)(intp))
# define move_from_unaligned16(v, u16p) ((v) = *(bb__aliased_uint16_t*)(u16p))
# define move_from_unaligned32(v, u32p) ((v) = *(bb__aliased_uint32_t*)(u32p))
# define move_to_unaligned32(u32p, v) (*(bb__aliased_uint32_t*)(u32p) = (v))
/* #elif ... - add your favorite arch today! */
#else
/* performs reasonably well (gcc usually inlines memcpy here) */