Problems with remote debugging on MBX860

Hello!

I am debugging a remote target (Hard Hat Linux on a MBX860) from my

host (Red Hat Linux 7.0 on x86 PC) with ppc_8xx_gdb(cross-dev). I got to connect both with
'target extended-remote' directive in the host, and with gdbserver in the target, gdb can do STEP,RUN...and the like, but I can't see the variables values. If I try to print any local variable GDB response is 'incomplete type'. I've compiled with ppc_8xx-gcc and the 'g' option and I've loaded the program in GDB with file 'program'...I don't Know what more I should do...Any bad
configuration?

Thanks.

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I've had luck with 'target remote /dev/<xxx>' instead of extended-remote. The following mod to the top-level Makefile helps, too:

! CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes -O2 -fno-strict-aliasing
! ifdef CONFIG_KGDB
! CFLAGS += -g -ggdb
! else
! CFLAGS += -fomit-frame-pointer
! endif

In addition, whenever I enabled kgdb I was getting an oops in rs_8xx_interrupt sometime during boot due to info->tty being NULL - I added a check for that and a return, and things seem to be fine.

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 Peter Desnoyers            (781) 457-1165   [email protected]
 Chinook Communications     (617) 661-1979   [email protected]

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Pedro,
All you need to add is the -ggdb option after the -g in your build of your application. This option provides gdb with more information about local variables that -g cannot. Everything else should be fine. If you were going to debug a kernel using gdb you would not be using gdbserver.

Cal Erickson

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Cal Erickson                 MontaVista Software Inc.
Linux Consultant             1237 E. Arques Ave.
Phone (408) 328-0304         Sunnyvale CA 94085
Fax   (408) 328-9204         web http://www.mvista.com

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