r

The r command sets or displays register values.

Format

The format for the r command is:

  r [reg|* [val|field val]]

where:
reg   is the name of the register or registers (specified by wildcard characters) to display or modify. 
val   is the value to which the specified register or registers should be modified. 
field val   is the value to which the specified field in the specified register should be modified. 
*    displays the contents of all registers except floating-point registers. 
f*    displays the contents of all floating-point registers. 

 

 

 

 

Invoking the r command without any parameters or arguments displays a list of all the general-purpose registers.

 

Functional Description

The r command sets or displays register values.
 

The character and word wildcards, "*" and "?", can be used in the register name. The '?' character matches any single character, while the '*' character matches any number of any characters. This command accepts both hardware and software names. Examples illustrating the use of the r command follow.

 
r  Display all General-purpose registers. 
r *  Display all register values. 
r 08  Display r08
r r*  Display r00 through r31. 
r f*  Display all fpu registerr. 
r f17  Display fpu register 17
r 04 45  Set register 04 to 00000045. 

 

 

 


Examples

Display all regular registers (PowerPC example)
PMON> r

     r00-07  00000000 03dfffc0 00000000 00000000 00000000 00000000 00000000 0000000
     r08-15  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
     r16-23  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
     r24-31  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Display all registers. Note that the actual registers that are displayed by the "r *" command depends on what type of processor you are using. This display was generated using a PowerPC. 
PMON> r *

     r00-07  00000000 03dfffc0 00000000 00000000 00000000 00000000 00000000 00000000
     r08-15  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
     r16-23  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
     r24-31  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000

     f00-03  0000000000000000 0000000000000000 0000000000000000 0000000000000000
     f04-07  0000000000000000 0000000000000000 0000000000000000 0000000000000000
     f08-11  0000000000000000 0000000000000000 0000000000000000 0000000000000000
     f12-15  0000000000000000 0000000000000000 0000000000000000 0000000000000000
     f16-19  0000000000000000 0000000000000000 0000000000000000 0000000000000000
     f20-23  0000000000000000 0000000000000000 0000000000000000 0000000000000000
     f24-27  0000000000000000 0000000000000000 0000000000000000 0000000000000000
     f28-31  0000000000000000 0000000000000000 0000000000000000 0000000000000000
     fsr = 0000000000000000
     cpc = 00100000, lr = 00000000, ctr = 00000000, sr = 00003032
PMON>

Set the register 'r02' to a value of 0x00000100 
  
PMON> r 02 00000100
PMON>
 

See Also

l command for disassembling instructions from memory.

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