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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.
57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
/*===---- rdpruintrin.h - RDPRU 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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#if !defined __X86INTRIN_H
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#error "Never use <rdpruintrin.h> directly; include <x86intrin.h> instead."
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#endif
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#ifndef __RDPRUINTRIN_H
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#define __RDPRUINTRIN_H
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/* Define the default attributes for the functions in this file. */
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#define __DEFAULT_FN_ATTRS \
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__attribute__((__always_inline__, __nodebug__, __target__("rdpru")))
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/// Reads the content of a processor register.
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///
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/// \headerfile <x86intrin.h>
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///
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/// This intrinsic corresponds to the <c> RDPRU </c> instruction.
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///
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/// \param reg_id
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/// A processor register identifier.
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static __inline__ unsigned long long __DEFAULT_FN_ATTRS
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__rdpru (int reg_id)
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{
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return __builtin_ia32_rdpru(reg_id);
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}
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#define __RDPRU_MPERF 0
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#define __RDPRU_APERF 1
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/// Reads the content of processor register MPERF.
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///
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/// \headerfile <x86intrin.h>
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///
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/// This intrinsic generates instruction <c> RDPRU </c> to read the value of
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/// register MPERF.
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#define __mperf() __builtin_ia32_rdpru(__RDPRU_MPERF)
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/// Reads the content of processor register APERF.
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///
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/// \headerfile <x86intrin.h>
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///
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/// This intrinsic generates instruction <c> RDPRU </c> to read the value of
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/// register APERF.
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#define __aperf() __builtin_ia32_rdpru(__RDPRU_APERF)
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#undef __DEFAULT_FN_ATTRS
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#endif /* __RDPRUINTRIN_H */
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