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| author | H.J. Lu <hjl.tools@gmail.com> | 2021-02-04 10:39:34 -0800 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2021-02-07 08:01:14 -0800 |
| commit | 5ab25c88758810269607a066fcac399e29863510 (patch) | |
| tree | fff85c2b2b481b413d71872bd5753f870557d89a /sysdeps/x86/bits | |
| parent | c3479fb7939898ec22c655c383454d6e8b982a67 (diff) | |
| download | glibc-5ab25c88758810269607a066fcac399e29863510.tar.gz glibc-5ab25c88758810269607a066fcac399e29863510.tar.xz glibc-5ab25c88758810269607a066fcac399e29863510.zip | |
x86: Add PTWRITE feature detection [BZ #27346]
1. Add CPUID_INDEX_14_ECX_0 for CPUID leaf 0x14 to detect PTWRITE feature in EBX of CPUID leaf 0x14 with ECX == 0. 2. Add PTWRITE detection to CPU feature tests. 3. Add 2 static CPU feature tests.
Diffstat (limited to 'sysdeps/x86/bits')
| -rw-r--r-- | sysdeps/x86/bits/platform/x86.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/sysdeps/x86/bits/platform/x86.h b/sysdeps/x86/bits/platform/x86.h index 8f423ae721..c4850fc3cb 100644 --- a/sysdeps/x86/bits/platform/x86.h +++ b/sysdeps/x86/bits/platform/x86.h @@ -29,7 +29,8 @@ enum CPUID_INDEX_80000007, CPUID_INDEX_80000008, CPUID_INDEX_7_ECX_1, - CPUID_INDEX_19 + CPUID_INDEX_19, + CPUID_INDEX_14_ECX_0 }; struct cpuid_feature @@ -295,5 +296,11 @@ enum + cpuid_register_index_ebx * 8 * sizeof (unsigned int)), x86_cpu_AESKLE = x86_cpu_index_19_ebx, - x86_cpu_WIDE_KL = x86_cpu_index_19_ebx + 2 + x86_cpu_WIDE_KL = x86_cpu_index_19_ebx + 2, + + x86_cpu_index_14_ecx_0_ebx + = (CPUID_INDEX_14_ECX_0 * 8 * 4 * sizeof (unsigned int) + + cpuid_register_index_ebx * 8 * sizeof (unsigned int)), + + x86_cpu_PTWRITE = x86_cpu_index_14_ecx_0_ebx + 4 }; |