On 11/03/2016 12:03 PM, Laurent Vivier wrote:
CC_OP_CMPW for cas2w.
It was working because I have used helper_be_ldsw_mmu() to load values,
is it better to use helper_be_lduw_mmu with CC_OP_CMPW?
IIRC, one needs the extra sign-extension here:
case CC_OP_CMPB:
Le 03/11/2016 à 17:36, Richard Henderson a écrit :
> On 11/02/2016 03:15 PM, Laurent Vivier wrote:
>> +if (c1 != l1) {
>> +env->cc_n = l1;
>> +env->cc_v = c1;
>> +} else {
>> +env->cc_n = l2;
>> +env->cc_v = c2;
>> +}
>> +env->cc_op = CC_OP_CMPL;
>> +
On 11/02/2016 03:15 PM, Laurent Vivier wrote:
+if (c1 != l1) {
+env->cc_n = l1;
+env->cc_v = c1;
+} else {
+env->cc_n = l2;
+env->cc_v = c2;
+}
+env->cc_op = CC_OP_CMPL;
+env->dregs[Dc1] = deposit32(env->dregs[Dc1], 0, 16, l1);
+env->dregs[D
Implement CAS using cmpxchg.
Implement CAS2 using helper and either cmpxchg when
the 32bit addresses are consecutive, or with
parallel_cpus+cpu_loop_exit_atomic() otherwise.
Suggested-by: Richard Henderson
Signed-off-by: Laurent Vivier
---
target-m68k/helper.h| 2 +
target-m68k/op_helper.
