Hi, I'm trying to debug a simple helloworld program with gdbserver on m5282evb running the latest patch of uClinux-dist (20080131). I compile gdbserver and separately compile gdb for target=m68k-uclinux-uclibc. In the target, I run:
gdbserver :10000 hello which starts OK. But in the host, I have the following GDB problem: ********************************************************* >../gdb/host/gdb/gdb ./hello.gdb GNU gdb 6.3 Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "--host=i686-pc-linux-gnu --target=m68k-uclinux-uclibc"... (gdb) target remote 192.168.1.123:10000 Remote debugging using 192.168.1.123:10000 0x006a8044 in ?? () (gdb) list Cannot access memory at address 0x40 (gdb) ********************************************************* After some observations, I've noticed that GDB is assuming the program starts at address 0x00000000. But since m5282 has no MMU, code relocation is performed on the target and it seems GDB does not notice about it. It believes program starts at the virtual address 0x0, when it actually starts (in this case) at 0x006a8044. I've tried to run 'section' command of GDB to change section addresses but the problem persists. Does anybody know whether GDB works with noMMU targets thru serial/network interface? (No BDM interface). Thank you Claude
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