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This sections describes built-in functions related to read and write
instructions to access memory. These functions generate
membar instructions to flush the I/O load and stores where
appropriate, as described in Fujitsu's manual described above.
unsigned char __builtin_read8 (void *
data
)
unsigned short __builtin_read16 (void *
data
)
unsigned long __builtin_read32 (void *
data
)
unsigned long long __builtin_read64 (void *
data
)
void __builtin_write8 (void *
data
, unsigned char
datum
)
void __builtin_write16 (void *
data
, unsigned short
datum
)
void __builtin_write32 (void *
data
, unsigned long
datum
)
void __builtin_write64 (void *
data
, unsigned long long
datum
)