Datasheet

126
SAM4S [DATASHEET]
11100E–ATARM–24-Jul-13
12.6.5.21SEL
Select Bytes. Selects each byte of its result from either its first operand or its second operand, according to the values of
the GE flags.
Syntax
SEL{<c>}{<q>} {<Rd>,} <Rn>, <Rm>
where:
c, q are standard assembler syntax fields.
Rd is the destination register.
Rn is the first register holding the operand.
Rm is the second register holding the operand.
Operation
The
SEL instruction:
1. Reads the value of each bit of APSR.GE.
2. Depending on the value of APSR.GE, assigns the destination register the value of either the first or second oper-
and register.
Restrictions
None.
Condition Flags
These instructions do not change the flags.
Examples
SADD16 R0, R1, R2 ; Set GE bits based on result
SEL R0, R0, R3 ; Select bytes from R0 or R3, based on GE.