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https://github.com/anrieff/libcpuid
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commit
7770fffb6a
1 changed files with 5 additions and 3 deletions
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@ -1296,13 +1296,15 @@ int cpuid_present(void)
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#if defined(PLATFORM_X86) || defined(PLATFORM_X64)
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return cpuid_exists_by_eflags();
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#elif defined(PLATFORM_AARCH64)
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# if defined(HAVE_GETAUXVAL) /* Linux */
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# if defined(HAVE_GETAUXVAL) && defined(HWCAP_CPUID) /* Linux */
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return (getauxval(AT_HWCAP) & HWCAP_CPUID);
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# elif defined(HAVE_ELF_AUX_INFO) /* FreeBSD */
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# elif defined(HAVE_ELF_AUX_INFO) && defined(HWCAP_CPUID) /* FreeBSD */
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unsigned long hwcap = 0;
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if (elf_aux_info(AT_HWCAP, &hwcap, sizeof(hwcap)) == 0)
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return ((hwcap & HWCAP_CPUID) != 0);
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# endif /* HAVE_GETAUXVAL */
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# elif !defined(HWCAP_CPUID)
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# warning HWCAP_CPUID is not defined on this AArch64 system, cpuid_present() will always return 0
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# endif /* HWCAP_CPUID */
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/* On AArch64, return 0 by default */
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return 0;
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#else
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