Re: [PATCH 1/2] tests/tcg/ppc64le: Added an overflow with OE=1 test

[Richard Henderson]

On 8/17/22 09:57, Lucas Mateus Castro(alqotel) wrote:
> +void sigfpe_handler(int sig, siginfo_t *si, void *ucontext)
> +{
> +    uint64_t t;
> +    uint64_t ch = 0x5fcfffe4965a17e0ull;
> +    asm (
> +        "stfd 2, %0\n\t"
> +        : "=m"(t)
> +        :
> +        : "memory", "fr2"
> +    );

No, you need to fetch f2 from ucontext.  There's no guarantee of any specific values being 
present in the signal handler otherwise.

> +    return -1;

exit(-1), which return from main equates to, helpful over EXIT_FAILURE.
But here I'd tend to abort(), since it really shouldn't be reachable.


r~