Patchwork [06/24] x86-64: Add _CET_ENDBR to STRCMP_SSE42

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Submitter H.J. Lu
Date June 13, 2018, 3:31 p.m.
Message ID <20180613153207.57232-7-hjl.tools@gmail.com>
Download mbox | patch
Permalink /patch/27787/
State New
Headers show

Comments

H.J. Lu - June 13, 2018, 3:31 p.m.
Add _CET_ENDBR to STRCMP_SSE42, which is called indirectly, to support
IBT.

	* sysdeps/x86_64/multiarch/strcmp-sse42.S (STRCMP_SSE42): Add
	_CET_ENDBR.
---
 sysdeps/x86_64/multiarch/strcmp-sse42.S | 1 +
 1 file changed, 1 insertion(+)
Carlos O'Donell - July 6, 2018, 2:50 p.m.
On 06/13/2018 11:31 AM, H.J. Lu wrote:
> Add _CET_ENDBR to STRCMP_SSE42, which is called indirectly, to support
> IBT.
> 
> 	* sysdeps/x86_64/multiarch/strcmp-sse42.S (STRCMP_SSE42): Add
> 	_CET_ENDBR.

Please commit.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>

> ---
>  sysdeps/x86_64/multiarch/strcmp-sse42.S | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/sysdeps/x86_64/multiarch/strcmp-sse42.S b/sysdeps/x86_64/multiarch/strcmp-sse42.S
> index 6fa0c2c7d2..5a0c6668a7 100644
> --- a/sysdeps/x86_64/multiarch/strcmp-sse42.S
> +++ b/sysdeps/x86_64/multiarch/strcmp-sse42.S
> @@ -126,6 +126,7 @@ END (GLABEL(__strncasecmp))
>  
>  STRCMP_SSE42:
>  	cfi_startproc
> +	_CET_ENDBR
>  	CALL_MCOUNT
>  
>  /*
>

Patch

diff --git a/sysdeps/x86_64/multiarch/strcmp-sse42.S b/sysdeps/x86_64/multiarch/strcmp-sse42.S
index 6fa0c2c7d2..5a0c6668a7 100644
--- a/sysdeps/x86_64/multiarch/strcmp-sse42.S
+++ b/sysdeps/x86_64/multiarch/strcmp-sse42.S
@@ -126,6 +126,7 @@  END (GLABEL(__strncasecmp))
 
 STRCMP_SSE42:
 	cfi_startproc
+	_CET_ENDBR
 	CALL_MCOUNT
 
 /*