LM3S2637 Datasheet, PDF (58/678 Pages) Texas Instruments – Stellaris® LM3S2637 Microcontroller

The Cortex-M3 Processor
Register 15: Link Register (LR)
The Link Register (LR) is register R14, and it stores the return information for subroutines, function
calls, and exceptions. LR can be accessed from either privileged or unprivileged mode.
EXC_RETURN is loaded into LR on exception entry. See Table 2-10 on page 84 for the values and
description.
Link Register (LR)
Type R/W, reset 0xFFFF.FFFF
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
LINK
Type R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
LINK
Type R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Bit/Field
31:0
Name
LINK
Type
Reset Description
R/W 0xFFFF.FFFF This field is the return address.
58
June 18, 2012
Texas Instruments-Production Data