Atmel SAM4S-XPLD Atmel ATSAM4S-XPLD ATSAM4S-XPLD Hoja De Datos

 92

SAM4S [DATASHEET]

11100E–ATARM–24-Jul-13

To use an instruction width suffix, place it immediately after the instruction mnemonic and condition code, if any. The
example below shows instructions with the instruction width suffix.

    BCS.W  label      ; creates a 32-bit instruction even for a short 

                      ; branch

    ADDS.W R0, R0, R1 ; creates a 32-bit instruction even though the same

                      ; operation can be done by a 16-bit instruction

The table below shows the memory access instructions:

ADR

Load PC-relative address

CLREX

Clear Exclusive

LDM{mode}

Load Multiple registers

LDR{type}

Load Register using immediate offset

LDR{type}

Load Register using register offset

LDR{type}T

Load Register with unprivileged access

LDR

Load Register using PC-relative address

LDRD

 Load Register Dual 

LDREX{type}

Load Register Exclusive

POP

Pop registers from stack

PUSH

Push registers onto stack

STM{mode}

Store Multiple registers

STR{type}

Store Register using immediate offset

STR{type}

Store Register using register offset

STR{type}T

Store Register with unprivileged access

STREX{type}

Store Register Exclusive