From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cagney To: Stephen Smith Cc: GDB Subject: Re: The add-symbol-file command comment in the manual is confusing Date: Fri, 06 Apr 2001 11:33:00 -0000 Message-id: <3ACE0BEC.E064FDC@cygnus.com> References: <3AB8D3B7.1C9C2E51@home.com> X-SW-Source: 2001-04/msg00054.html Just FYI, This sounds like our first (?) Doco bug :-) As for your questions, others are definitly more qualified to comment. Andrew Stephen Smith wrote: > > The add-symbol-file symbol file command has the following prose in the manual: > > add-symbol-file filename address [ -readnow ] [ -mapped ] > The add-symbol-file command reads additional symbol table information from the file filename. You would use this > command when filename has been dynamically > loaded (by some other means) into the program that is running. address should be the memory address at which the > file has been loaded; GDB cannot figure this out for itself. > You can specify address as an expression. The symbol table of the file filename is added to the symbol table > originally read with the symbol-file command. You can use > the add-symbol-file command any number of times; the new symbol data thus read keeps adding to the old. To discard > all old symbol data instead, use the > symbol-file command. add-symbol-file does not repeat if you press RET after using it. You can use the `-mapped' and > `-readnow' options just as with the > symbol-file command, to change how GDB manages the symbol table information for filename. > > Several questions > 1) What is the difference between useing and not using the -mapped command? Maybe I should ask first what is the use > of the mapped switch? > > 2) The quote says that "You can specify address as an expression". How would you do that? And just a curriosity, how > would you figure out the address to use?