Appendix B ROM Monitor

Debug Commands

Debug Commands

Most ROM monitor debugging commands are functional only when Cisco IOS software has crashed or stopped. If you enter a debugging command and Cisco IOS crash information is not available, you see the following error message:

"xxx: kernel context state is invalid, can not proceed."

The following are ROM monitor debugging commands:

stack or k—Produce a stack trace. For example:

rommon 6> stack

 

Stack trace:

 

PC = 0x801111b0

 

Frame 00: FP = 0x80005ea8

PC = 0x801111b0

Frame 01: FP = 0x80005eb4

PC = 0x80113694

Frame 02: FP = 0x80005f74

PC = 0x8010eb44

Frame 03: FP = 0x80005f9c

PC = 0x80008118

Frame 04: FP = 0x80005fac

PC = 0x80008064

Frame 05: FP = 0x80005fc4

PC = 0xfff03d70

context—Display processor context. For example:

 

 

rommon 7> context

 

 

 

 

 

 

 

 

 

CPU

context of the most recent exception:

 

 

 

 

 

PC

= 0x801111b0

MSR = 0x00009032

CR

= 0x53000035

LR

=

 

 

 

0x80113694

 

 

 

 

 

 

 

 

 

CTR

= 0x801065e4

XER = 0xa0006d36

DAR = 0xffffffff

DSISR

=

 

 

 

0xffffffff

 

 

 

 

 

 

 

 

 

DEC

= 0xffffffff

TBU

= 0xffffffff

TBL

= 0xffffffff

IMMR

=

 

 

 

0xffffffff

 

 

 

 

 

 

 

 

 

R0

= 0x00000000

R1

= 0x80005ea8

R2

= 0xffffffff

R3

=

 

 

 

0x00000000

 

 

 

 

 

 

 

 

 

R4

= 0x8fab0d76

R5

= 0x80657d00

R6

= 0x80570000

R7

=

 

 

 

0x80570000

 

 

 

 

 

 

 

 

 

R8

= 0x00000000

R9

= 0x80570000

R10

= 0x0000954c

R11

=

 

 

 

0x00000000

 

 

 

 

 

 

 

 

 

R12

= 0x00000080

R13

= 0xffffffff

R14

= 0xffffffff

R15

=

 

 

 

0xffffffff

 

 

 

 

 

 

 

 

 

R16

= 0xffffffff

R17

= 0xffffffff

R18

= 0xffffffff

R19

=

 

 

 

0xffffffff

 

 

 

 

 

 

 

 

 

R20

= 0xffffffff

R21

= 0xffffffff

R22

= 0xffffffff

R23

=

 

 

 

0xffffffff

 

 

 

 

 

 

 

 

 

R24

= 0xffffffff

R25

= 0xffffffff

R26

= 0xffffffff

R27

=

 

 

 

0xffffffff

 

 

 

 

 

 

 

 

 

Cisco 1700 Series Router Software Configuration Guide

 

 

 

 

 

 

 

 

 

 

 

 

B-12

 

 

 

 

 

 

 

78-5407-03

 

 

 

 

 

 

 

 

 

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Cisco Systems 1700 appendix Debug Commands, Context-Display processor context. For example