Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD Data Sheet

SAM4S Series [DATASHEET]

Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14

104

Load PC-relative address.
Syntax

ADR{cond} Rd, label

where:
condis an optional condition code, see 

.

Rdis the destination register.
labelis a PC-relative expression. See 

Operation
ADR determines the address by adding an immediate value to the PC, and writes the result to the destination 

register.
ADR produces position-independent code, because the address is PC-relative.
If ADR is used to generate a target address for a BX or BLX instruction, ensure that bit[0] of the address generated 

is set to 1 for correct execution.
Values of label must be within the range of −4095 to +4095 from the address in the PC. 

Note:

The user might have to use the .W suffix to get the maximum offset range or to generate addresses that are not word-

aligned. See 

.

Restrictions
Rd

 must not be SP and must not be PC.

Condition Flags
This instruction does not change the flags.
Examples

ADR

R1, TextMessage

; Write address value of a location labelled as

; TextMessage to R1