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SMC

Secure Monitor Call.

Syntax

SMC{cond} #imm4

where:

cond

is an optional condition code.

imm4

is a 4-bit immediate value. This is ignored by the Arm® processor, but can be used by the SMC exception handler to determine what service is being requested.

Note

SMC was called SMI in earlier versions of the A32 assembly language. SMI instructions disassemble to SMC, with a comment to say that this was formerly SMI.

Architectures

This 32-bit instruction is available in A32 and T32, if the Arm architecture has the Security Extensions.

There is no 16-bit version of this instruction in T32.

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