> +#if (GNU_PROPERTY_AARCH64_BTI != 0)
> +.pushsection .note.gnu.property, "a";
> +.balign 8;
> +.long 4;
> +.long 0x10;
> +.long 0x5;
> +.asciz "GNU";
> +.long 0xc000; /* GNU_PROPERTY_AARCH64_FEATURE_1_AND */
> +.long 4;
> +.long GNU_PROPERTY_AARCH64_BTI;
Resend patch as a text attachment...
Apologies,
Jonathan
From: ffmpeg-devel on behalf of Jonathan
Wright
Sent: 12 November 2021 17:30
To: ffmpeg-devel@ffmpeg.org
Cc: mar...@martin.st
Subject: [FFmpeg-devel] [PATCH 1/2] aarch64: Use ret x instead of br
Hi,
This patch adds Branch Target Identifiers (BTIs) to all functions defined
in AArch64 assembly files. Most of the BTI landing pads are added
automatically by the 'function' macro.
BTI support is turned on or off at compile time based on the presence
of the __ARM_FEATURE_BTI_DEFAULT feature mac
Hi,
This patch changes all AArch64 assembly code to use:
ret x
instead of:
br x
"ret x" is already used in a lot of places so this patch makes it
consistent across the code base. This does not change behavior or
performance.
In addition, this change reduces the number of landing pad
