PSB

Profiling synchronization barrier

This instruction is a barrier that ensures that all existing profiling data for the current PE has been formatted, and profiling buffer addresses have been translated such that all writes to the profiling buffer have been initiated. For information about the synchronization behavior when a DSB instruction follows a PSB instruction in program order, see Synchronization and Statistical Profiling.

If FEAT_SPE is not implemented, this instruction executes as a NOP.

System class

(FEAT_SPE)

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
1	1	0	1	0	1	0	1	0	0	0	0	0	0	1	1	0	0	1	0	0	0	1	0	0	0	1	1	1	1	1	1
																				CRm				op2

Encoding

PSB CSYNC

Decode

if !IsFeatureImplemented(FEAT_SPE) then EndOfDecode(Decode_NOP); end;

Operation

CheckPSBTrap(); ProfilingSynchronizationBarrier();

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31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
1	1	0	1	0	1	0	1	0	0	0	0	0	0	1	1	0	0	1	0	0	0	1	0	0	0	1	1	1	1	1	1
																				CRm				op2

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
1	1	0	1	0	1	0	1	0	0	0	0	0	0	1	1	0	0	1	0	0	0	1	0	0	0	1	1	1	1	1	1
																				CRm				op2

PSB

System class (FEAT_SPE)

Encoding

Decode

Operation

System class

(FEAT_SPE)

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
1	1	0	1	0	1	0	1	0	0	0	0	0	0	1	1	0	0	1	0	0	0	1	0	0	0	1	1	1	1	1	1
																				CRm				op2