This is the mail archive of the libc-alpha@sourceware.org mailing list for the glibc project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

PING^1: V5 [PATCH 0/2] Add <sys/platform/x86.h>


On Thu, Sep 27, 2018 at 12:43 PM H.J. Lu <hjl.tools@gmail.com> wrote:
>
> Add <sys/platform/x86.h> to provide an API to access x86 specific platform
> features.  It makes raw and derived CPUID information available to
> applications so that programmers can avoid complicated steps to retrieve
> the same information with CPUID instructions.  2 macros are provided to
> query x86 platform features:
>
> 1. HAS_CPU_FEATURE evaluates to true if CPU supports the feature.
> 2. CPU_FEATURE_USABLE evaluates to true if the feature is usable.
>
> They can be used in IFUNC resolvers, including in LD_PRELOAD shared
> objects.
>
>
> H.J. Lu (2):
>   x86: Add <sys/platform/x86.h>
>   x86: Add a LD_PRELOAD IFUNC resolver test for CPU_FEATURE_USABLE
>
>  NEWS                                          |   3 +
>  manual/platform.texi                          | 458 +++++++++++
>  sysdeps/mach/hurd/i386/ld.abilist             |   2 +
>  sysdeps/unix/sysv/linux/i386/ld.abilist       |   2 +
>  sysdeps/unix/sysv/linux/x86_64/64/ld.abilist  |   2 +
>  sysdeps/unix/sysv/linux/x86_64/x32/ld.abilist |   2 +
>  sysdeps/x86/Makefile                          |  23 +-
>  sysdeps/x86/Versions                          |   3 +
>  sysdeps/x86/cpu-features.c                    |  97 ++-
>  sysdeps/x86/cpu-features.h                    | 234 ++----
>  sysdeps/x86/dl-get-cpu-features.c             |  19 +
>  sysdeps/x86/sys/platform/x86.h                | 755 ++++++++++++++++++
>  sysdeps/x86/tst-get-cpu-features.c            |  29 +-
>  sysdeps/x86/tst-x86-platform-1-static.c       |   1 +
>  sysdeps/x86/tst-x86-platform-1.c              | 254 ++++++
>  sysdeps/x86/tst-x86-platform-2.c              |  27 +
>  sysdeps/x86/tst-x86-platform-3.c              |  27 +
>  sysdeps/x86/tst-x86-platform-4.c              |  54 ++
>  sysdeps/x86/tst-x86-platform-mod-2.c          |   2 +
>  sysdeps/x86/tst-x86-platform-mod-3.c          |   2 +
>  sysdeps/x86/tst-x86-platform-mod-4.c          |  37 +
>  sysdeps/x86/tst-x86-platform-preload-4.c      |  62 ++
>  sysdeps/x86_64/multiarch/sched_cpucount.c     |   2 +-
>  sysdeps/x86_64/multiarch/test-multiarch.c     |   4 +-
>  24 files changed, 1889 insertions(+), 212 deletions(-)
>  create mode 100644 sysdeps/x86/sys/platform/x86.h
>  create mode 100644 sysdeps/x86/tst-x86-platform-1-static.c
>  create mode 100644 sysdeps/x86/tst-x86-platform-1.c
>  create mode 100644 sysdeps/x86/tst-x86-platform-2.c
>  create mode 100644 sysdeps/x86/tst-x86-platform-3.c
>  create mode 100644 sysdeps/x86/tst-x86-platform-4.c
>  create mode 100644 sysdeps/x86/tst-x86-platform-mod-2.c
>  create mode 100644 sysdeps/x86/tst-x86-platform-mod-3.c
>  create mode 100644 sysdeps/x86/tst-x86-platform-mod-4.c
>  create mode 100644 sysdeps/x86/tst-x86-platform-preload-4.c
>

PING:

https://sourceware.org/ml/libc-alpha/2018-09/msg00510.html
https://sourceware.org/ml/libc-alpha/2018-09/msg00509.html


-- 
H.J.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]