[vlc-devel] [PATCH 1/3] aarch64: add macro for BTI

[Rémi Denis-Courmont]

Ping... Martin? Janne?

Le 29 novembre 2019 20:14:24 GMT+02:00, "Rémi Denis-Courmont" <remi at remlab.net> a écrit :
>This redefines bti so that it can assemble even on older assembler or
>when targeting an ARMv8-A revision lower than 8.5.
>---
> modules/arm_neon/asm.S | 21 +++++++++++++++++++++
> 1 file changed, 21 insertions(+)
>
>diff --git a/modules/arm_neon/asm.S b/modules/arm_neon/asm.S
>index 728391ea37..0d3f161ee9 100644
>--- a/modules/arm_neon/asm.S
>+++ b/modules/arm_neon/asm.S
>@@ -1,5 +1,6 @@
> /*
>  * Copyright (c) 2018 Janne Grunau <janne-libav at jannau.net>
>+ * Copyright (c) 2019 Rémi Denis-Courmont
>  *
>  * This program is free software; you can redistribute it and/or
>  * modify it under the terms of the GNU Lesser General Public
>@@ -37,3 +38,23 @@
> #endif
> EXTERN_ASM\name:
> .endm
>+
>+.macro	bti	targets=
>+.ifb	\targets
>+	hint	#32
>+.else
>+.ifc	\targets, c
>+	hint	#34
>+.else
>+.ifc	\targets, j
>+	hint	#36
>+.else
>+.ifc	\tagets, jc
>+	hint	#38
>+.else
>+.error	"invalid BTI target"
>+.endif
>+.endif
>+.endif
>+.endif
>+.endm
>-- 
>2.24.0
>
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