[glibc] Deleted branch hjl/cet/master

[glibc] Deleted branch hjl/cet/master

[H.J. Lu]

The branch 'hjl/cet/master' was deleted.
It previously pointed to:

 e772a01f9c... Fix test

Diff:

!!! WARNING: THE FOLLOWING COMMITS ARE NO LONGER ACCESSIBLE (LOST):
-------------------------------------------------------------------

  e772a01... Fix test
  d0ce483... x86: Add --enable-cet=permissive
  f9a69d5... rtld: Get architecture specific initializer in rtld_global
  97547c7... CET: Rename CET_MAX to CET_CONTROL_MASK [BZ #25887]

commit e772a01f9cdbf8e9d824f793301437ff0bd725a6
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Tue Apr 28 10:57:24 2020 -0700

    Fix test

commit d0ce483f4c16edf07d6e2a3a028c7f15388f4735
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Mon Apr 27 15:44:07 2020 -0700

    x86: Add --enable-cet=permissive
    
    When CET is enabled, it is an error to dlopen a non CET enabled shared
    library in CET enabled application.  It may be desirable to make CET
    permissive, that is disable CET when dlopening a non CET enabled shared
    library.  With the new --enable-cet=permissive configure option, CET is
    disabled when dlopening a non CET enabled shared library.
    
    Add DEFAULT_DL_X86_FEATURE_1_1 to config.h.in:
    
     /* The default value of _dl_x86_feature_1[1].  */
     #define DEFAULT_DL_X86_FEATURE_1_1 0
    
    --enable-cet changes it to
    
     /* The default value of _dl_x86_feature_1[1].  */
     #define DEFAULT_DL_X86_FEATURE_1_1 ((CET_ELF_PROPERTY << CET_IBT_SHIFT) | (CET_ELF_PROPERTY << CET_SHSTK_SHIFT))
    
    enables CET features based on ELF property note.
    
    --enable-cet=permissive it to
    
     /* The default value of _dl_x86_feature_1[1].  */
     #define DEFAULT_DL_X86_FEATURE_1_1 ((CET_PERMISSIVE << CET_IBT_SHIFT) | (CET_PERMISSIVE << CET_SHSTK_SHIFT))
    
    which enable CET features permissively.

commit f9a69d5fd4c9a3fd4435b6e58a818e3ebe198b00
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Tue Apr 28 10:05:25 2020 -0700

    rtld: Get architecture specific initializer in rtld_global
    
    Include <dl-procruntime.c> to get architecture specific initializer in
    rtld_global.

commit 97547c772180b927531ce073dd55f2bf646a133d
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Tue Apr 28 07:46:17 2020 -0700

    CET: Rename CET_MAX to CET_CONTROL_MASK [BZ #25887]
    
    _dl_x86_feature_1[1] is used to control each CET feature, IBT and SHSTK:
    
     /* Valid control values:
        0: Enable CET features based on ELF property note.
        1: Always disable CET features.
        2: Always enable CET features.
        3: Enable CET features permissively.
      */
     #define CET_ELF_PROPERTY       0
     #define CET_ALWAYS_OFF         1
     #define CET_ALWAYS_ON          2
     #define CET_PERMISSIVE         3
     #define CET_MAX                CET_PERMISSIVE
    
    CET control value takes 2 bits.  Rename CET_MAX to CET_CONTROL_MASK.  Add
    CET_IBT_SHIFT and CET_SHSTK_SHIFT.