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
rommon 6> stack |
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Stack trace: |
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PC = 0x801111b0 |
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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:
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| rommon 7> context |
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| CPU | context of the most recent exception: |
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| PC | = 0x801111b0 | MSR = 0x00009032 | CR | = 0x53000035 | LR | = |
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| 0x80113694 |
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| CTR | = 0x801065e4 | XER = 0xa0006d36 | DAR = 0xffffffff | DSISR | = |
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| 0xffffffff |
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| DEC | = 0xffffffff | TBU | = 0xffffffff | TBL | = 0xffffffff | IMMR | = |
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| 0xffffffff |
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| R0 | = 0x00000000 | R1 | = 0x80005ea8 | R2 | = 0xffffffff | R3 | = |
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| 0x00000000 |
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| R4 | = 0x8fab0d76 | R5 | = 0x80657d00 | R6 | = 0x80570000 | R7 | = |
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| 0x80570000 |
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| R8 | = 0x00000000 | R9 | = 0x80570000 | R10 | = 0x0000954c | R11 | = |
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| 0x00000000 |
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| R12 | = 0x00000080 | R13 | = 0xffffffff | R14 | = 0xffffffff | R15 | = |
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| 0xffffffff |
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| R16 | = 0xffffffff | R17 | = 0xffffffff | R18 | = 0xffffffff | R19 | = |
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| 0xffffffff |
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| R20 | = 0xffffffff | R21 | = 0xffffffff | R22 | = 0xffffffff | R23 | = |
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| 0xffffffff |
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| R24 | = 0xffffffff | R25 | = 0xffffffff | R26 | = 0xffffffff | R27 | = |
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| 0xffffffff |
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| Cisco 1700 Series Router Software Configuration Guide |
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