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| author | H.J. Lu <hjl.tools@gmail.com> | 2018-07-17 16:04:41 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2018-07-17 16:05:18 -0700 |
| commit | 124bcde683d5d8b5c26bd2f535edcf3b7ab6108c (patch) | |
| tree | 2a5d04ec0beca2b81243a04cfe8bbdc77e1210e6 | |
| parent | 9145f0333d11683cb3d796246d1395c84b4a3516 (diff) | |
| download | glibc-124bcde683d5d8b5c26bd2f535edcf3b7ab6108c.tar glibc-124bcde683d5d8b5c26bd2f535edcf3b7ab6108c.tar.gz glibc-124bcde683d5d8b5c26bd2f535edcf3b7ab6108c.tar.bz2 glibc-124bcde683d5d8b5c26bd2f535edcf3b7ab6108c.zip | |
x86: Add _CET_ENDBR to functions in crti.S
Add _CET_ENDBR to functions in crti.S, which are called indirectly, to
support IBT.
Tested on i686 and x86-64.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* sysdeps/i386/crti.S (_init): Add _CET_ENDBR.
(_fini): Likewise.
* sysdeps/x86_64/crti.S (_init): Likewise.
(_fini): Likewise.
| -rw-r--r-- | ChangeLog | 7 | ||||
| -rw-r--r-- | sysdeps/i386/crti.S | 2 | ||||
| -rw-r--r-- | sysdeps/x86_64/crti.S | 2 |
3 files changed, 11 insertions, 0 deletions
@@ -1,3 +1,10 @@ +2018-07-17 H.J. Lu <hongjiu.lu@intel.com> + + * sysdeps/i386/crti.S (_init): Add _CET_ENDBR. + (_fini): Likewise. + * sysdeps/x86_64/crti.S (_init): Likewise. + (_fini): Likewise. + 2018-07-17 Rafal Luzynski <digitalfreak@lingonborough.com> [BZ #23140] diff --git a/sysdeps/i386/crti.S b/sysdeps/i386/crti.S index ffbc92c22f..65ddc1c934 100644 --- a/sysdeps/i386/crti.S +++ b/sysdeps/i386/crti.S @@ -61,6 +61,7 @@ .hidden _init .type _init, @function _init: + _CET_ENDBR pushl %ebx /* Maintain 16-byte stack alignment for called functions. */ subl $8, %esp @@ -81,6 +82,7 @@ _init: .hidden _fini .type _fini, @function _fini: + _CET_ENDBR pushl %ebx subl $8, %esp LOAD_PIC_REG (bx) diff --git a/sysdeps/x86_64/crti.S b/sysdeps/x86_64/crti.S index f26915e956..067ac14884 100644 --- a/sysdeps/x86_64/crti.S +++ b/sysdeps/x86_64/crti.S @@ -61,6 +61,7 @@ .hidden _init .type _init, @function _init: + _CET_ENDBR /* Maintain 16-byte stack alignment for called functions. */ subq $8, %rsp #if PREINIT_FUNCTION_WEAK @@ -79,4 +80,5 @@ _init: .hidden _fini .type _fini, @function _fini: + _CET_ENDBR subq $8, %rsp |