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master
Marc Alexander Lehmann 2012-01-27 22:28:49 +00:00
parent 48410c0406
commit 397c6c331f
1 changed files with 11 additions and 9 deletions
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20
ev.c
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@ -560,8 +560,10 @@ struct signalfd_siginfo
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
#elif __sparc || __sparc__
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
#elif defined(__s390__) || defined(__s390x__)
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
#endif
#endif
#endif
@ -856,25 +858,25 @@ ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (
#define ecb_unreachable() __builtin_unreachable ()
#else
/* this seems to work fine, but gcc always emits a warning for it :/ */
ecb_function_ void ecb_unreachable (void) ecb_noreturn;
ecb_function_ void ecb_unreachable (void) { }
ecb_inline void ecb_unreachable (void) ecb_noreturn;
ecb_inline void ecb_unreachable (void) { }
#endif
/* try to tell the compiler that some condition is definitely true */
#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
ecb_function_ unsigned char
ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
ecb_inline unsigned char
ecb_byteorder_helper (void)
{
const uint32_t u = 0x11223344;
return *(unsigned char *)&u;
}
ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
#if ECB_GCC_VERSION(3,0) || ECB_C99
#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))