ARM Version 1.6

Quick-start Tutorial

The Register pane displays tabs appropriate to the target processor running your

image and the target vehicle used to make the connection. For the

ARM7TDMI

core

using ARMulator, the pane includes the Core tab, showing the base registers for

the connected target processor, and the Debug tab, showing internal debugger

variables. For full details on the contents of this tab see the chapter describing

monitoring execution in RealView Debugger v1.6 User Guide.

2. Click the Pane menu and select Show Enumerations as Values from the

available options. This displays the register contents as values rather than

enumerated strings. The Register pane is refreshed.

3. Click the Pane menu and unselect Show Enumerations as Values.

Changing register contents

To change the contents of registers:

1. Click on the Core tab in the Register pane.

2. Right-click in the Mode field of the Current Program Status Register (CPSR)

SVC

) to display the context menu shown in Figure 4-6.

Figure4-6 Changing register contents

3. Select Set Enumeration.... This opens a selection box where you can specify the

context-sensitive value to modify the selected register entry.

4. Select

FIQ

from the list of available options and click OK to change the Mode

field of the CPSR from

SVC

(

0013

) to

FIQ

(

0011

). This updates the contents of the

ARM banked registers,

R14

, shown in the pane. Similarly, if you are in

SVC

mode and you change the contents of

R13

in the

SVC

bank (

), the contents of

R13

(

) change to match.