Physical Speculative Store Bypass Barrier is a memory barrier that prevents speculative loads from bypassing earlier stores to the same physical address under certain conditions. For more information and details of the semantics, see Physical Speculative Store Bypass Barrier (PSSBB).
It has encodings from the following instruction sets: A32 ( A1 ) and T32 ( T1 ) .
| 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 | 1 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | (1) | (1) | (1) | (1) | (1) | (1) | (1) | (1) | (0) | (0) | (0) | (0) | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 |
// No additional decoding required
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 1 | (1) | (1) | (1) | (1) | 1 | 0 | (0) | 0 | (1) | (1) | (1) | (1) | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 |
if InITBlock() then UNPREDICTABLE;
if ConditionPassed() then EncodingSpecificOperations(); SpeculativeStoreBypassBarrierToPA();
Internal version only: isa v01_32, pseudocode v2024-12_rel ; Build timestamp: 2024-12-16T10:54
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