Re: [Qemu-devel] [PATCH for-2.5] sparc: allow CASA with ASI 0xa from user space

[Peter Maydell]

On 8 December 2015 at 19:59, Richard Henderson <address@hidden> wrote:
> On 12/04/2015 07:01 AM, Alex Zuepke wrote:
>> LEON3 allows the CASA instruction to be used from user space
>> if the ASI is set to 0xa (user data).
>>
>> Signed-off-by: Alex Zuepke <address@hidden>
>> ---
>>  target-sparc/translate.c | 3 ++-
>>  1 file changed, 2 insertions(+), 1 deletion(-)
>>
>> diff --git a/target-sparc/translate.c b/target-sparc/translate.c
>> index 41a3319..63440dd 100644
>> --- a/target-sparc/translate.c
>> +++ b/target-sparc/translate.c
>> @@ -5097,7 +5097,8 @@ static void disas_sparc_insn(DisasContext * dc, 
>> unsigned int insn)
>>                      if (IS_IMM) {
>>                          goto illegal_insn;
>>                      }
>> -                    if (!supervisor(dc)) {
>> +                    /* LEON3 allows CASA from user space with ASI 0xa */
>> +                    if ((GET_FIELD(insn, 19, 26) != 0xa) && 
>> !supervisor(dc)) {
>>                          goto priv_insn;
>>                      }
>>  #endif
>>
>
> Reviewed-by: Richard Henderson <address@hidden>
>
> This should probably be merged for 2.5.

Very late, but a very small patch which only affects TCG SPARC,
so I'm OK with applying it to master. (Mark, did you want to ack/review?)

thanks
-- PMM