Debugging with GDB (September 2007)

228 Debugging with GDB

16.6 XDB special variables and HP WDB equivalents

GDB does not provide special variables of the kind that XDB has, but you c an use show

and set to display and modify many debugger settings.

XDB Special Variable WDB Equivalent Meaning

$cplusplus No equivalent C++ feature control ﬂags

$depth No equivalent Default stack depth for local vari-

ables

$fpa No equivalent Treat FPA sequence as one in-

struction

$fpa_reg No equivalent Address register for FPA se-

quences

$lang show language Current language for expression

evaluation

$line No equivalent Current source line number

$malloc No equivalent Debugger memory allocation

(bytes)

$print No equivalent Display mode for character data

$regname $regname Hardware registers

$result Use $n (value history

numb e r assigned to the

desired result)

Return value of last command line

procedure call

$signal No equivalent Current child procedure signal

numb e r