Re: [Qemu-arm] [PATCH 06/10] armv7m: set CFSR.UNDEFINSTR on undefined instructions

[Alex Bennée]

Peter Maydell <address@hidden> writes:

> From: Michael Davidsaver <address@hidden>
>
> When we take an exception for an undefined instruction, set the
> appropriate CFSR bit.
>
> Signed-off-by: Michael Davidsaver <address@hidden>
> [PMM: tweaked commit message, comment]
> Signed-off-by: Peter Maydell <address@hidden>

Reviewed-by: Alex Bennée <address@hidden>

> ---
>  target/arm/helper.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/target/arm/helper.c b/target/arm/helper.c
> index 7dc30f5..e6b1c36 100644
> --- a/target/arm/helper.c
> +++ b/target/arm/helper.c
> @@ -6072,6 +6072,7 @@ void arm_v7m_cpu_do_interrupt(CPUState *cs)
>      switch (cs->exception_index) {
>      case EXCP_UDEF:
>          armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE);
> +        env->v7m.cfsr |= R_V7M_CFSR_UNDEFINSTR_MASK;
>          return;
>      case EXCP_SWI:
>          /* The PC already points to the next instruction.  */


--
Alex Bennée