On Mon, 21 Mar 2016 12:33:32 +0100
Laurent Vivier <lvivier@xxxxxxxxxx> wrote:
> Check in MSR if the SF bit is set (64bit mode is enabled)
>
> Signed-off-by: Laurent Vivier <lvivier@xxxxxxxxxx>
> Reviewed-by: Thomas Huth <thuth@xxxxxxxxxx>
Reviewed-by: David Gibson <david@xxxxxxxxxxxxxxxxxxxxx>
> ---
> powerpc/emulator.c | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/powerpc/emulator.c b/powerpc/emulator.c
> index 1d4f164..d97090c 100644
> --- a/powerpc/emulator.c
> +++ b/powerpc/emulator.c
> @@ -43,6 +43,19 @@ static void test_illegal(void)
> report_prefix_pop();
> }
>
> +static void test_64bit(void)
> +{
> + uint64_t msr;
> +
> + report_prefix_push("64bit");
> +
> + asm("mfmsr %[msr]": [msr] "=r" (msr));
> +
> + report("detected", msr & 0x8000000000000000UL);
> +
> + report_prefix_pop();
> +}
> +
> int main(int argc, char **argv)
> {
> int i;
> @@ -57,6 +70,7 @@ int main(int argc, char **argv)
>
> report_prefix_push("emulator");
>
> + test_64bit();
> test_illegal();
>
> report_prefix_pop();
> --
> 2.5.0
>
--
David Gibson <dgibson@xxxxxxxxxx>
Senior Software Engineer, Virtualization, Red Hat
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