On Thu, Jul 13, 2017 at 01:25:47PM +1000, Matt Brown wrote:
> +static nokprobe_inline void do_prtyw(struct pt_regs *regs, unsigned long v,
> + int ra)
> +{
> + unsigned long low, high, out;
> + unsigned int i;
> +
> + high = 0;
> + low = 0;
> + out = 0;
> +
> + for (i = 0; i < 8; i++) {
> + if (v & (1 << (i * 8)))
1UL
> + (i < 4) ? (low++) : (high++);
> + }
> +
> + if (low % 2)
> + out |= low;
> + if (high % 2)
> + out |= (high << 32);
Only the low bit of each word of the output can be set. Something
like
out = ((high & 1) << 32) | (low & 1);
Segher
