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ARM Compiler armasm User Guide : CODE16 directive

CODE16 directive

The CODE16 directive instructs the assembler to interpret subsequent instructions as T32 instructions, using the UAL syntax.

Note

Not supported for AArch64 state.

Syntax

CODE16

Usage

In files that contain code using different instruction sets,CODE16 must precede T32 code written in pre-UAL syntax.

If necessary, this directive also inserts one byte of padding to align to the next halfword boundary.

This directive does not assemble to any instructions. It also does not change the state. It only instructs armasm to assemble T32 instructions as appropriate, and inserts padding if necessary.

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