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/*===---- adcintrin.h - ADC intrinsics -------------------------------------===
*
* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
* See https://llvm.org/LICENSE.txt for license information.
* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
*
*===-----------------------------------------------------------------------===
*/
#ifndef __ADCINTRIN_H
#define __ADCINTRIN_H
#if !defined(__i386__) && !defined(__x86_64__)
#error "This header is only meant to be used on x86 and x64 architecture"
#endif
/* Define the default attributes for the functions in this file. */
#define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__))
/* Use C++ inline semantics in C++, GNU inline for C mode. */
#if defined(__cplusplus)
#define __INLINE __inline
#else
#define __INLINE static __inline
#endif
#if defined(__cplusplus)
extern "C" {
#endif
/// Adds unsigned 32-bit integers \a __x and \a __y, plus 0 or 1 as indicated
/// by the carry flag \a __cf. Stores the unsigned 32-bit sum in the memory
/// at \a __p, and returns the 8-bit carry-out (carry flag).
///
/// \code{.operation}
/// temp := (__cf == 0) ? 0 : 1
/// Store32(__p, __x + __y + temp)
/// result := CF
/// \endcode
///
/// \headerfile <immintrin.h>
///
/// This intrinsic corresponds to the \c ADC instruction.
///
/// \param __cf
/// The 8-bit unsigned carry flag; any non-zero value indicates carry.
/// \param __x
/// A 32-bit unsigned addend.
/// \param __y
/// A 32-bit unsigned addend.
/// \param __p
/// Pointer to memory for storing the sum.
/// \returns The 8-bit unsigned carry-out value.
__INLINE unsigned char __DEFAULT_FN_ATTRS _addcarry_u32(unsigned char __cf,
unsigned int __x,
unsigned int __y,
unsigned int *__p) {
return __builtin_ia32_addcarryx_u32(__cf, __x, __y, __p);
}
/// Adds unsigned 32-bit integer \a __y to 0 or 1 as indicated by the carry
/// flag \a __cf, and subtracts the result from unsigned 32-bit integer
/// \a __x. Stores the unsigned 32-bit difference in the memory at \a __p,
/// and returns the 8-bit carry-out (carry or overflow flag).
///
/// \code{.operation}
/// temp := (__cf == 0) ? 0 : 1
/// Store32(__p, __x - (__y + temp))
/// result := CF
/// \endcode
///
/// \headerfile <immintrin.h>
///
/// This intrinsic corresponds to the \c SBB instruction.
///
/// \param __cf
/// The 8-bit unsigned carry flag; any non-zero value indicates carry.
/// \param __x
/// The 32-bit unsigned minuend.
/// \param __y
/// The 32-bit unsigned subtrahend.
/// \param __p
/// Pointer to memory for storing the difference.
/// \returns The 8-bit unsigned carry-out value.
__INLINE unsigned char __DEFAULT_FN_ATTRS _subborrow_u32(unsigned char __cf,
unsigned int __x,
unsigned int __y,
unsigned int *__p) {
return __builtin_ia32_subborrow_u32(__cf, __x, __y, __p);
}
#ifdef __x86_64__
/// Adds unsigned 64-bit integers \a __x and \a __y, plus 0 or 1 as indicated
/// by the carry flag \a __cf. Stores the unsigned 64-bit sum in the memory
/// at \a __p, and returns the 8-bit carry-out (carry flag).
///
/// \code{.operation}
/// temp := (__cf == 0) ? 0 : 1
/// Store64(__p, __x + __y + temp)
/// result := CF
/// \endcode
///
/// \headerfile <immintrin.h>
///
/// This intrinsic corresponds to the \c ADC instruction.
///
/// \param __cf
/// The 8-bit unsigned carry flag; any non-zero value indicates carry.
/// \param __x
/// A 64-bit unsigned addend.
/// \param __y
/// A 64-bit unsigned addend.
/// \param __p
/// Pointer to memory for storing the sum.
/// \returns The 8-bit unsigned carry-out value.
__INLINE unsigned char __DEFAULT_FN_ATTRS
_addcarry_u64(unsigned char __cf, unsigned long long __x,
unsigned long long __y, unsigned long long *__p) {
return __builtin_ia32_addcarryx_u64(__cf, __x, __y, __p);
}
/// Adds unsigned 64-bit integer \a __y to 0 or 1 as indicated by the carry
/// flag \a __cf, and subtracts the result from unsigned 64-bit integer
/// \a __x. Stores the unsigned 64-bit difference in the memory at \a __p,
/// and returns the 8-bit carry-out (carry or overflow flag).
///
/// \code{.operation}
/// temp := (__cf == 0) ? 0 : 1
/// Store64(__p, __x - (__y + temp))
/// result := CF
/// \endcode
///
/// \headerfile <immintrin.h>
///
/// This intrinsic corresponds to the \c ADC instruction.
///
/// \param __cf
/// The 8-bit unsigned carry flag; any non-zero value indicates carry.
/// \param __x
/// The 64-bit unsigned minuend.
/// \param __y
/// The 64-bit unsigned subtrahend.
/// \param __p
/// Pointer to memory for storing the difference.
/// \returns The 8-bit unsigned carry-out value.
__INLINE unsigned char __DEFAULT_FN_ATTRS
_subborrow_u64(unsigned char __cf, unsigned long long __x,
unsigned long long __y, unsigned long long *__p) {
return __builtin_ia32_subborrow_u64(__cf, __x, __y, __p);
}
#endif
#if defined(__cplusplus)
}
#endif
#undef __INLINE
#undef __DEFAULT_FN_ATTRS
#endif /* __ADCINTRIN_H */
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