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Re: [RFC v2 02/12] target/ppc: powerpc_excp: Set vector earlier
From: |
Nicholas Piggin |
Subject: |
Re: [RFC v2 02/12] target/ppc: powerpc_excp: Set vector earlier |
Date: |
Sat, 25 Dec 2021 20:45:52 +1000 |
Excerpts from Cédric Le Goater's message of December 22, 2021 4:48 pm:
> Adding Nicholas.
These look fine by me. The whole series looks like a really nice
cleanup actually.
Thanks,
Nick
>
> On 12/20/21 19:18, Fabiano Rosas wrote:
>> None of the interrupt setup code touches 'vector', so we can move it
>> earlier in the function. This will allow us to later move the System
>> Call Vectored setup that is on the top level into the
>> POWERPC_EXCP_SYSCALL_VECTORED code block.
>>
>> This patch also moves the verification for when 'excp' does not have
>> an address associated with it. We now bail a little earlier when that
>> is the case. This should not cause any visible effects.
>>
>> Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
>
>
> Reviewed-by: Cédric Le Goater <clg@kaod.org>
>
> Thanks,
>
> C.
>
>> ---
>> target/ppc/excp_helper.c | 16 ++++++++--------
>> 1 file changed, 8 insertions(+), 8 deletions(-)
>>
>> diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c
>> index 8b9c6bc5a8..14fd0213a0 100644
>> --- a/target/ppc/excp_helper.c
>> +++ b/target/ppc/excp_helper.c
>> @@ -352,6 +352,14 @@ static inline void powerpc_excp(PowerPCCPU *cpu, int
>> excp_model, int excp)
>> }
>> #endif
>>
>> + vector = env->excp_vectors[excp];
>> + if (vector == (target_ulong)-1ULL) {
>> + cpu_abort(cs, "Raised an exception without defined vector %d\n",
>> + excp);
>> + }
>> +
>> + vector |= env->excp_prefix;
>> +
>> switch (excp) {
>> case POWERPC_EXCP_NONE:
>> /* Should never happen */
>> @@ -831,14 +839,6 @@ static inline void powerpc_excp(PowerPCCPU *cpu, int
>> excp_model, int excp)
>> }
>> #endif
>>
>> - vector = env->excp_vectors[excp];
>> - if (vector == (target_ulong)-1ULL) {
>> - cpu_abort(cs, "Raised an exception without defined vector %d\n",
>> - excp);
>> - }
>> -
>> - vector |= env->excp_prefix;
>> -
>> #if defined(TARGET_PPC64)
>> if (excp_model == POWERPC_EXCP_BOOKE) {
>> if (env->spr[SPR_BOOKE_EPCR] & EPCR_ICM) {
>>
>
>