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https://github.com/jart/cosmopolitan.git
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c9152b6f14
This change switches c++ exception handling from sjlj to standard dwarf. It's needed because clang for aarch64 doesn't support sjlj. It turns out that libunwind had a bare-metal configuration that made this easy to do. This change gets the new experimental cosmocc -mclang flag in a state of working so well that it can now be used to build all of llamafile and it goes 3x faster in terms of build latency, without trading away any perf. The int_fast16_t and int_fast32_t types are now always defined as 32-bit in the interest of having more abi consistency between cosmocc -mgcc and -mclang mode.
160 lines
5.2 KiB
C
160 lines
5.2 KiB
C
/*===---- adcintrin.h - ADC intrinsics -------------------------------------===
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*
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* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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* See https://llvm.org/LICENSE.txt for license information.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*
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*===-----------------------------------------------------------------------===
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*/
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#ifndef __ADCINTRIN_H
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#define __ADCINTRIN_H
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#if !defined(__i386__) && !defined(__x86_64__)
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#error "This header is only meant to be used on x86 and x64 architecture"
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#endif
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/* Define the default attributes for the functions in this file. */
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#define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__))
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/* Use C++ inline semantics in C++, GNU inline for C mode. */
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#if defined(__cplusplus)
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#define __INLINE __inline
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#else
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#define __INLINE static __inline
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#endif
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/// Adds unsigned 32-bit integers \a __x and \a __y, plus 0 or 1 as indicated
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/// by the carry flag \a __cf. Stores the unsigned 32-bit sum in the memory
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/// at \a __p, and returns the 8-bit carry-out (carry flag).
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///
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/// \code{.operation}
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/// temp := (__cf == 0) ? 0 : 1
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/// Store32(__p, __x + __y + temp)
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/// result := CF
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/// \endcode
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///
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/// \headerfile <immintrin.h>
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///
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/// This intrinsic corresponds to the \c ADC instruction.
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///
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/// \param __cf
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/// The 8-bit unsigned carry flag; any non-zero value indicates carry.
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/// \param __x
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/// A 32-bit unsigned addend.
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/// \param __y
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/// A 32-bit unsigned addend.
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/// \param __p
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/// Pointer to memory for storing the sum.
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/// \returns The 8-bit unsigned carry-out value.
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__INLINE unsigned char __DEFAULT_FN_ATTRS _addcarry_u32(unsigned char __cf,
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unsigned int __x,
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unsigned int __y,
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unsigned int *__p) {
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return __builtin_ia32_addcarryx_u32(__cf, __x, __y, __p);
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}
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/// Adds unsigned 32-bit integer \a __y to 0 or 1 as indicated by the carry
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/// flag \a __cf, and subtracts the result from unsigned 32-bit integer
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/// \a __x. Stores the unsigned 32-bit difference in the memory at \a __p,
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/// and returns the 8-bit carry-out (carry or overflow flag).
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///
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/// \code{.operation}
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/// temp := (__cf == 0) ? 0 : 1
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/// Store32(__p, __x - (__y + temp))
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/// result := CF
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/// \endcode
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///
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/// \headerfile <immintrin.h>
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///
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/// This intrinsic corresponds to the \c SBB instruction.
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///
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/// \param __cf
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/// The 8-bit unsigned carry flag; any non-zero value indicates carry.
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/// \param __x
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/// The 32-bit unsigned minuend.
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/// \param __y
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/// The 32-bit unsigned subtrahend.
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/// \param __p
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/// Pointer to memory for storing the difference.
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/// \returns The 8-bit unsigned carry-out value.
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__INLINE unsigned char __DEFAULT_FN_ATTRS _subborrow_u32(unsigned char __cf,
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unsigned int __x,
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unsigned int __y,
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unsigned int *__p) {
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return __builtin_ia32_subborrow_u32(__cf, __x, __y, __p);
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}
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#ifdef __x86_64__
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/// Adds unsigned 64-bit integers \a __x and \a __y, plus 0 or 1 as indicated
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/// by the carry flag \a __cf. Stores the unsigned 64-bit sum in the memory
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/// at \a __p, and returns the 8-bit carry-out (carry flag).
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///
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/// \code{.operation}
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/// temp := (__cf == 0) ? 0 : 1
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/// Store64(__p, __x + __y + temp)
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/// result := CF
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/// \endcode
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///
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/// \headerfile <immintrin.h>
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///
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/// This intrinsic corresponds to the \c ADC instruction.
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///
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/// \param __cf
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/// The 8-bit unsigned carry flag; any non-zero value indicates carry.
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/// \param __x
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/// A 64-bit unsigned addend.
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/// \param __y
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/// A 64-bit unsigned addend.
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/// \param __p
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/// Pointer to memory for storing the sum.
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/// \returns The 8-bit unsigned carry-out value.
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__INLINE unsigned char __DEFAULT_FN_ATTRS
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_addcarry_u64(unsigned char __cf, unsigned long long __x,
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unsigned long long __y, unsigned long long *__p) {
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return __builtin_ia32_addcarryx_u64(__cf, __x, __y, __p);
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}
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/// Adds unsigned 64-bit integer \a __y to 0 or 1 as indicated by the carry
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/// flag \a __cf, and subtracts the result from unsigned 64-bit integer
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/// \a __x. Stores the unsigned 64-bit difference in the memory at \a __p,
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/// and returns the 8-bit carry-out (carry or overflow flag).
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///
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/// \code{.operation}
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/// temp := (__cf == 0) ? 0 : 1
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/// Store64(__p, __x - (__y + temp))
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/// result := CF
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/// \endcode
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///
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/// \headerfile <immintrin.h>
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///
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/// This intrinsic corresponds to the \c ADC instruction.
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///
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/// \param __cf
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/// The 8-bit unsigned carry flag; any non-zero value indicates carry.
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/// \param __x
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/// The 64-bit unsigned minuend.
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/// \param __y
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/// The 64-bit unsigned subtrahend.
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/// \param __p
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/// Pointer to memory for storing the difference.
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/// \returns The 8-bit unsigned carry-out value.
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__INLINE unsigned char __DEFAULT_FN_ATTRS
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_subborrow_u64(unsigned char __cf, unsigned long long __x,
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unsigned long long __y, unsigned long long *__p) {
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return __builtin_ia32_subborrow_u64(__cf, __x, __y, __p);
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}
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#endif
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#if defined(__cplusplus)
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}
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#endif
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#undef __INLINE
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#undef __DEFAULT_FN_ATTRS
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#endif /* __ADCINTRIN_H */
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