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6.56.6.4 Raw read/write Functions
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)
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