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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.
84 lines
2.5 KiB
C
84 lines
2.5 KiB
C
/*===---- xsavecintrin.h - XSAVEC intrinsic --------------------------------===
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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 __IMMINTRIN_H
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#error "Never use <xsavecintrin.h> directly; include <immintrin.h> instead."
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#endif
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#ifndef __XSAVECINTRIN_H
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#define __XSAVECINTRIN_H
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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__, __target__("xsavec")))
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/// Performs a full or partial save of processor state to the memory at
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/// \a __p. The exact state saved depends on the 64-bit mask \a __m and
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/// processor control register \c XCR0.
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///
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/// \code{.operation}
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/// mask[62:0] := __m[62:0] AND XCR0[62:0]
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/// FOR i := 0 TO 62
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/// IF mask[i] == 1
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/// CASE (i) OF
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/// 0: save X87 FPU state
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/// 1: save SSE state
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/// DEFAULT: __p.Ext_Save_Area[i] := ProcessorState[i]
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/// FI
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/// ENDFOR
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/// __p.Header.XSTATE_BV[62:0] := INIT_FUNCTION(mask[62:0])
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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 XSAVEC instruction.
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///
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/// \param __p
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/// Pointer to the save area; must be 64-byte aligned.
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/// \param __m
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/// A 64-bit mask indicating what state should be saved.
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static __inline__ void __DEFAULT_FN_ATTRS
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_xsavec(void *__p, unsigned long long __m) {
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__builtin_ia32_xsavec(__p, __m);
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}
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#ifdef __x86_64__
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/// Performs a full or partial save of processor state to the memory at
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/// \a __p. The exact state saved depends on the 64-bit mask \a __m and
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/// processor control register \c XCR0.
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///
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/// \code{.operation}
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/// mask[62:0] := __m[62:0] AND XCR0[62:0]
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/// FOR i := 0 TO 62
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/// IF mask[i] == 1
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/// CASE (i) OF
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/// 0: save X87 FPU state
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/// 1: save SSE state
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/// DEFAULT: __p.Ext_Save_Area[i] := ProcessorState[i]
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/// FI
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/// ENDFOR
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/// __p.Header.XSTATE_BV[62:0] := INIT_FUNCTION(mask[62:0])
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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 XSAVEC64 instruction.
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///
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/// \param __p
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/// Pointer to the save area; must be 64-byte aligned.
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/// \param __m
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/// A 64-bit mask indicating what state should be saved.
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static __inline__ void __DEFAULT_FN_ATTRS
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_xsavec64(void *__p, unsigned long long __m) {
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__builtin_ia32_xsavec64(__p, __m);
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}
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#endif
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#undef __DEFAULT_FN_ATTRS
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#endif
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