Debugging with GDB (September 2007)

282 Debugging with GDB
411^done,value="4"
(gdb)
511-data-evaluate-expression "A + 3"
511^done,value="4"
(gdb)
The -data-list-changed-registers Command
Synopsis
-data-list-changed-registers
Display a list of the registers that have changed.
GDB command
GDB doesnot have a direct analog for this command; gdbtk has the corresponding
command ‘gdb_changed_register_list’.
Example
On a PPC MBX board:
(gdb)
-exec-continue
^running
(gdb)
*stopped,reason="breakpoint-hit",bkptno="1",frame={func="main",
args=[],file="try.c",line="5"}
(gdb)
-data-list-changed-registers
^done,changed-registers=["0","1","2","4","5","6","7","8","9",
"10","11","13","14","15","16","17","18","19","20","21","22","23",
"24","25","26","27","28","30","31","64","65","66","67","69"]
(gdb)
The -data-list-register-names command
Synopsis
-data-list-register-names [ ( regno )+ ]
Show a list of register names for the current target. If no arguments are given, it shows a
list of the names of all the registers. If integer numbers are given as arguments, it will print
a list of the names of the registers corresponding to the arguments. To ensure consistency
between a register name and its number, the output list may include empty register names.