David Gibson writes:
> [ Unknown signature status ]
> On Thu, Apr 06, 2017 at 03:52:47PM +0530, Nikunj A Dadhania wrote:
>> Emulating LL/SC with cmpxchg is not correct, since it can suffer from
>> the ABA problem. However, portable parallel code is written assuming
>> only cmpxchg which means tha
On Thu, Apr 06, 2017 at 03:52:47PM +0530, Nikunj A Dadhania wrote:
> Emulating LL/SC with cmpxchg is not correct, since it can suffer from
> the ABA problem. However, portable parallel code is written assuming
> only cmpxchg which means that in practice this is a viable alternative.
>
> Signed-off
Richard Henderson writes:
> On 04/06/2017 03:22 AM, Nikunj A Dadhania wrote:
>> tcg_gen_trunc_tl_i32(cpu_crf[0], cpu_so);
>> l1 = gen_new_label();
>> tcg_gen_brcond_tl(TCG_COND_NE, EA, cpu_reserve, l1);
>> -tcg_gen_ori_i32(cpu_crf[0], cpu_crf[0], CRF_EQ);
>> -tcg_gen_qemu_s
Richard Henderson writes:
> On 04/06/2017 03:22 AM, Nikunj A Dadhania wrote:
>> +TCGv_i32 tmp = tcg_temp_local_new_i32();
>> +TCGv t0;
>>
>> +tcg_gen_movi_i32(tmp, 0);
>> tcg_gen_trunc_tl_i32(cpu_crf[0], cpu_so);
>> l1 = gen_new_label();
>> tcg_gen_brcond_tl(TCG_COND_NE
On 04/06/2017 03:22 AM, Nikunj A Dadhania wrote:
tcg_gen_trunc_tl_i32(cpu_crf[0], cpu_so);
l1 = gen_new_label();
tcg_gen_brcond_tl(TCG_COND_NE, EA, cpu_reserve, l1);
-tcg_gen_ori_i32(cpu_crf[0], cpu_crf[0], CRF_EQ);
-tcg_gen_qemu_st_tl(cpu_gpr[reg], EA, ctx->mem_idx, memop)
On 04/06/2017 03:22 AM, Nikunj A Dadhania wrote:
+TCGv_i32 tmp = tcg_temp_local_new_i32();
+TCGv t0;
+tcg_gen_movi_i32(tmp, 0);
tcg_gen_trunc_tl_i32(cpu_crf[0], cpu_so);
l1 = gen_new_label();
tcg_gen_brcond_tl(TCG_COND_NE, EA, cpu_reserve, l1);
-tcg_gen_ori_i32(cpu
Emulating LL/SC with cmpxchg is not correct, since it can suffer from
the ABA problem. However, portable parallel code is written assuming
only cmpxchg which means that in practice this is a viable alternative.
Signed-off-by: Nikunj A Dadhania
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target/ppc/translate.c | 24
