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13.133 SSAT

Signed Saturate to any bit position, with optional shift before saturating.

SSAT{cond} Rd, #sat, Rm{, shift}

where:

cond

is an optional condition code.

Rd

is the destination register.

sat

specifies the bit position to saturate to, in therange 1 to 32.

Rm

is the register containing the operand.

shift

is an optional shift. It must be one of the following:

Operation

The SSAT instruction applies the specified shift, then saturates a signed value to the signed range –2^sat–1 ≤ x ≤ 2^sat–1 –1.

You cannot use PC for any operand.

You can use SP in A32 instructions but this is deprecated. You cannot use SP in T32 instructions.

If saturation occurs, this instruction sets the Q flag. Toread the state of the Q flag, use an MRS instruction.

This instruction is available in A32 and T32.

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

    SSAT    r7, #16, r7, LSL #4

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