forked from OSchip/llvm-project
35 lines
1.6 KiB
C
35 lines
1.6 KiB
C
/*===---- cpuid.h - X86 cpu model detection --------------------------------===
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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*===-----------------------------------------------------------------------===
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*/
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#if !(__x86_64__ || __i386__)
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#error this header is for x86 only
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#endif
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static inline int __get_cpuid (unsigned int __level, unsigned int *__eax,
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unsigned int *__ebx, unsigned int *__ecx,
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unsigned int *__edx) {
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__asm("cpuid" : "=a"(*__eax), "=b" (*__ebx), "=c"(*__ecx), "=d"(*__edx)
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: "0"(__level));
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return 1;
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}
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