[PATCH] Add __synch_synchronize function for arm

[Joel Sherrill]

I committed this patch to 4.11 and master.

Thanks.

--joel

On 08/01/2015 05:43 AM, Jan Sommer wrote:
> From: Jan Sommer<summerspam at web.de>
>
> Fixes link failure when linking Ada programs on the raspberry pi
> ---
>   cpukit/score/cpu/arm/Makefile.am              | 1 +
>   cpukit/score/cpu/arm/armv4-sync-synchronize.c | 9 +++++++++
>   2 files changed, 10 insertions(+)
>   create mode 100644 cpukit/score/cpu/arm/armv4-sync-synchronize.c
>
> diff --git a/cpukit/score/cpu/arm/Makefile.am b/cpukit/score/cpu/arm/Makefile.am
> index c051a48..4b242f0 100644
> --- a/cpukit/score/cpu/arm/Makefile.am
> +++ b/cpukit/score/cpu/arm/Makefile.am
> @@ -27,6 +27,7 @@ libscorecpu_a_SOURCES += arm_exc_handler_high.c
>   libscorecpu_a_SOURCES += arm-exception-frame-print.c
>   libscorecpu_a_SOURCES += arm-exception-default.c
>   libscorecpu_a_SOURCES += armv4-exception-default.S
> +libscorecpu_a_SOURCES += armv4-sync-synchronize.c
>   libscorecpu_a_SOURCES += armv7-thread-idle.c
>   libscorecpu_a_SOURCES += armv7m-context-initialize.c
>   libscorecpu_a_SOURCES += armv7m-context-restore.c
> diff --git a/cpukit/score/cpu/arm/armv4-sync-synchronize.c b/cpukit/score/cpu/arm/armv4-sync-synchronize.c
> new file mode 100644
> index 0000000..6fcac05
> --- /dev/null
> +++ b/cpukit/score/cpu/arm/armv4-sync-synchronize.c
> @@ -0,0 +1,9 @@
> +void
> +__sync_synchronize (void)
> +{
> +#ifdef ARM_MULTILIB_HAS_BARRIER_INSTRUCTIONS
> +  asm volatile("dmb" : : : "memory");
> +#else
> +  asm volatile("" : : : "memory");
> +#endif
> +}
> \ No newline at end of file


-- 
-- Joel Sherrill
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