RE: [PATCH v2 06/12] Hexagon (tests/tcg/hexagon) test instructions that might set bits in USR

[Taylor Simpson]

> -----Original Message-----
> From: Richard Henderson <richard.henderson@linaro.org>
> Sent: Thursday, February 10, 2022 7:03 PM
> To: Taylor Simpson <tsimpson@quicinc.com>; qemu-devel@nongnu.org
> Cc: f4bug@amsat.org; ale@rev.ng; Brian Cain <bcain@quicinc.com>; Michael
> Lambert <mlambert@quicinc.com>
> Subject: Re: [PATCH v2 06/12] Hexagon (tests/tcg/hexagon) test instructions
> that might set bits in USR
> 
> On 2/10/22 13:15, Taylor Simpson wrote:
> > +#define CLEAR_USRBITS \
> > +    "r2 = usr\n\t" \
> > +    "r2 = clrbit(r2, #0)\n\t" \
> > +    "r2 = clrbit(r2, #1)\n\t" \
> > +    "r2 = clrbit(r2, #2)\n\t" \
> > +    "r2 = clrbit(r2, #3)\n\t" \
> > +    "r2 = clrbit(r2, #4)\n\t" \
> > +    "r2 = clrbit(r2, #5)\n\t" \
> > +    "usr = r2\n\t"
> 
> It's just a test case, so it doesn't really matter, but
> 
>      r2 = and(r2, #~0x3f)

Our assembler won't parse the ~.  So, I'll have to go with 0xfffffc0.

Taylor