On Sunday 03 August 2014 09:21 PM, Segher Boessenkool wrote:
>> +/*
>> + * KVMPPC_INST_BOOK3S_DEBUG is debug Instruction for supporting Software
>> Breakpoint.
>> + * Based on PowerISA v2.07, Instruction with opcode 0s will be treated as
>> illegal
>> + * instruction.
>> + */
>
> "primary opcode 0" instead?
>
ok sure.
>> +#define OP_ZERO 0x0
>
> Using 0x0 where you mean 0, making a #define for 0 in the first place...
> This all looks rather silly doesn't it.
>
I wanted to avoid zero mentioned in the case statement, but can add a
comment explaining it.
>> + case OP_ZERO:
>> + if((inst & 0x00FFFF00) == KVMPPC_INST_BOOK3S_DEBUG) {
>
> You either shouldn't mask at all here, or the mask is wrong (the primary
> op is the top six bits, not the top eight).
>
Yes. I guess I dont need to check here. Will resend the patch.
Thanks for review
Regards
Maddy
>
> Segher
>
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