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Re: [Xen-devel] [PATCH RFC for-4.13 07/10] xen/arm: Allow insn.h to be called from assembly
- To: Julien Grall <julien.grall@xxxxxxx>
- From: Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Date: Fri, 27 Sep 2019 11:52:31 +0000
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- Cc: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, "andrii.anisov@xxxxxxxxx" <andrii.anisov@xxxxxxxxx>
- Delivery-date: Fri, 27 Sep 2019 11:52:36 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Thread-index: AQHVdJmUb6JbeQtE50WfKaLczja0p6c/auEA
- Thread-topic: [PATCH RFC for-4.13 07/10] xen/arm: Allow insn.h to be called from assembly
Julien Grall writes:
> A follow-up patch will require to include insn.h from assembly code. So
> wee need to protect any C-specific definition to avoid compilation
> error when used in assembly code.
>
> Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
Reviewed-by: Volodymyr Babchuk <volodymyr_babchuk@xxxxxxxx>
> ---
> xen/include/asm-arm/insn.h | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/xen/include/asm-arm/insn.h b/xen/include/asm-arm/insn.h
> index 19277212e1..00391f83f9 100644
> --- a/xen/include/asm-arm/insn.h
> +++ b/xen/include/asm-arm/insn.h
> @@ -1,8 +1,14 @@
> #ifndef __ARCH_ARM_INSN
> #define __ARCH_ARM_INSN
>
> +#ifndef __ASSEMBLY__
> +
> #include <xen/types.h>
>
> +/*
> + * At the moment, arch-specific headers contain only definition for C
> + * code.
> + */
> #if defined(CONFIG_ARM_64)
> # include <asm/arm64/insn.h>
> #elif defined(CONFIG_ARM_32)
> @@ -11,6 +17,8 @@
> # error "unknown ARM variant"
> #endif
>
> +#endif /* __ASSEMBLY__ */
> +
> /* On ARM32,64 instructions are always 4 bytes long. */
> #define ARCH_PATCH_INSN_SIZE 4
--
Volodymyr Babchuk at EPAM
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