42 lines
764 B
C
42 lines
764 B
C
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#ifndef KERNEL_COMPILER_H_
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#define KERNEL_COMPILER_H_
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#ifdef __cplusplus
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template <typename T>
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T read_once(const volatile T *ptr)
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{
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return *ptr;
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}
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template <typename T>
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void write_once(volatile T *ptr, T value)
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{
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*ptr = value;
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}
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#else
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#define READ_ONCE(p) (*((const volatile typeof(p) *)&(p)))
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#define WRITE_ONCE(p, v) *(volatile typeof(p) *)&(p) = (v)
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#endif
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#undef __used
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#define __used __attribute__((__used__))
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#undef __noreturn
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#define __noreturn __attribute__((__noreturn__))
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#undef __packed
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#define __packed __attribute__((__packed__))
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#undef __section
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#define __section(name) __attribute__((__section__(name)))
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#undef __aligned
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#define __aligned(x) __attribute__((__aligned__(x)))
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#undef __weak
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#define __weak __attribute__((__weak__))
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#endif
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