Debug Manual
Table Of Contents
- What’s New in This Manual
- About This Manual
- 1 Introduction
- Execution Modes on TNS/R Systems
- What User Access Is Required for Debugging
- How to Make a Process Enter Debug
- How to Select Debug as the Debugger
- Why a Process Enters Debug
- How to Determine Process State on a Trap or Signal
- Ending a Debug Session
- What Appears in the Debug Header Message
- How to Use Debug
- How Debug Breakpoints Work
- 2 Using Debug on TNS/R Processors
- 3 Debug Command Overview
- 4 Debug Commands
- Command Summary
- A Command
- AMAP Command
- B Command
- BASE Command
- BM Command
- C Command
- CM Command
- D Command
- DJ Command
- DN Command
- EX[IT] Command
- F[ILES] Command
- FC Command
- FN Command
- FNL Command
- FREEZE Command
- HALT Command
- H[ELP] Command
- I Command
- IH Command (TNS/R Native and OSS Processes)
- INSPECT Command
- LMAP Command
- M Command
- MH Command (TNS/R Native and OSS Processes)
- P[AUSE] Command
- PMAP Command (Accelerated Programs)
- PRV Command
- R Command
- S[TOP] Command
- T Command
- V Command
- VQ Command
- VQA Command
- = Command
- ? Command
- A Error Messages
- B ASCII Character Set
- C Command Syntax Summary
- Register Syntax
- Expression Syntax
- Address Syntax
- A Command
- AMAP Command
- B Command
- BASE Command
- BM Command
- C Command
- CM Command
- D Command
- DJ Command
- DN Command
- EX[IT] Command
- F[ILES] Command
- FC Command
- FN Command
- FNL Command
- FREEZE Command
- HALT Command
- H[ELP] Command
- I Command
- IH Command
- INSPECT Command
- LMAP Command
- M Command
- MH Command
- Output-Device Syntax
- P[AUSE] Command
- PMAP Command
- PRV Command
- R Command
- S[TOP] Command
- T Command
- V Command
- VQ Command
- VQA Command
- = Command
- ? Command
- D Session Boundaries
- E Correspondence Between Debug and Inspect Commands
- F Sample Debug Sessions
- Glossary
- Index
Debug Commands
Debug Manual—421921-003
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Display Register Contents
Display Register Contents
The D command can display registers. The display-register form of this command is:
register
represents the contents of one of the processor registers for the process. For more
information, see Register Syntax on page 3-7.
If you omit register, Debug displays the current values of the TNS/R registers
when in native mode, and the TNS environment registers when in TNS or
accelerated mode. In addition, Debug displays the space identifier of the current
code segment.
These notes apply to TNS environment registers:
This note applies to TNS/R registers:
[OUT] output-dev
specifies where the display is directed. Debug output can be directed to an output
device, a process, or a spooler collector. Debug output cannot be directed to a disk
file. If you omit output-dev, Debug assumes the home terminal.
The output-dev parameter has these formats:
D [ register ] [ , [ OUT ] output-dev ]
[ * ]
E specifies the ENV register. When asked to display the ENV register,
Debug translates the meaning of its contents.
SP specifies the space identifier of the current code segment.
* displays all registers, including TNS/R registers and TNS environment
registers when the process is an accelerated mode.
Without the asterisk (*), only TNS/R registers are displayed in native
process; only TNS environment registers are displayed in TNS or
accelerated mode.
$F00 through $F31 and $FCR31 specify the IEEE floating-point registers.
These registers are available only after a
program has executed floating-point
instructions. When specified to display the
$FCR31 register, Debug translates the
meaning of the bits for the register. For more
information, see TNS/R Registers on
page 2-10.