Using and Porting GNU CC
If two registers have consecutive numbers inside GNU CC, and they can be
used as a pair to hold a multiword value, then they must have
consecutive numbers after renumbering with
Otherwise, debuggers will be unable to access such a pair, because they
expect register pairs to be consecutive in their own numbering scheme.
If you find yourself defining
DBX_REGISTER_NUMBER in way that
does not preserve register pairs, then what you must do instead is
redefine the actual register numbering scheme.
-g' options is used.
DEBUGGER_ARG_OFFSET (offset, x)
-g' or `
-ggdb'. Define this if you have arranged for GNU CC to support more than one format of debugging output. Currently, the allowable values are
The value of this macro only affects the default debugging output; the
user can always get a specific type of output by using `
-gdwarf', or `