[PATCH] bpf: Fixed register parsing disambiguating with possible symbol.

[Cupertino Miranda]

Thanks! Committed!

Jose E. Marchesi writes:

> Hi Cuper.
> The patch is OK.
> Thanks!
>
>> This changes parse_bpf_register to detect possible symbols that start with valid
>> register name, however due some following characters are not.
>> Also changed the regs-for-symbols-pseudo.s, adding some entries that
>> should not error if parser is properly detecting the symbol.
>> ---
>>  gas/config/tc-bpf.c                              | 4 ++++
>>  gas/testsuite/gas/bpf/regs-for-symbols-pseudoc.s | 3 +++
>>  2 files changed, 7 insertions(+)
>>
>> diff --git a/gas/config/tc-bpf.c b/gas/config/tc-bpf.c
>> index 45abc3c9578..b6b1db47427 100644
>> --- a/gas/config/tc-bpf.c
>> +++ b/gas/config/tc-bpf.c
>> @@ -1300,6 +1300,10 @@ parse_bpf_register (char *s, char rw, uint8_t *regno)
>>        s += 1;
>>      }
>>
>> +  /* If we are still parsing a name, it is not a register.  */
>> +  if (is_part_of_name (*s))
>> +    return NULL;
>> +
>>    return s;
>>  }
>>
>> diff --git a/gas/testsuite/gas/bpf/regs-for-symbols-pseudoc.s b/gas/testsuite/gas/bpf/regs-for-symbols-pseudoc.s
>> index 693787d5479..9b75f275285 100644
>> --- a/gas/testsuite/gas/bpf/regs-for-symbols-pseudoc.s
>> +++ b/gas/testsuite/gas/bpf/regs-for-symbols-pseudoc.s
>> @@ -2,3 +2,6 @@
>>          r2 = r3 ll
>>          r2 = r3+1 ll
>>          r2 = 1+r3 ll
>> +        r2 = r2d2 ll
>> +        r2 = r2d2+1 ll
>> +        r2 = 1+r2d2 ll