RealView® Compilation Tools Assembler Guide 4.10.6. SMC

4.10.6. SMC

Secure Monitor Call.

For details see the ARM Architecture Reference Manual Security Extensions Supplement.

Syntax

SMC{cond} #immed_16

where:

cond: is an optional condition code (see Conditional execution).
immed_16: is a 16-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.

Usage

As part of the development of the ARM assembly language, the SMI instruction has been renamed to SMC. In this release of RVCT, SMI instructions disassemble to SMC, with a comment to say that this was formerly SMI.

Architectures

This ARM instruction is available in Z variants of ARMv6 and above.

This 32-bit Thumb-2 instruction is available in Z variants of ARMv6T2 and above.

There is no 16-bit Thumb version of this instruction.

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