Dsb - ST STM32F4 Series Programming Manual

PM0214
3.11.4

DSB

Data synchronization barrier.
Syntax
DSB{cond}
Where: 'cond' is an optional condition code, see
Operation
DSB acts as a special data synchronization memory barrier. Instructions that come after the
DSB, in program order, do not execute until the DSB instruction completes. The DSB
instruction completes when all explicit memory accesses before it complete.
Condition flags
This instruction does not change the flags.
Examples
DSB ; Data Synchronisation Barrier
Conditional execution on page
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The STM32 Cortex-M4 instruction set
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