> -gdb-----------------gdb-----------------gdb-----------------gdb---------------- > [EMAIL PROTECTED]:~/arm$ > ntoarm-gdb > /home/vmaster/arm/qnx/workspace/sam9_l9260/Images/startup-at91sam9263ek.sym > GNU gdb 6.7 > Copyright (C) 2007 Free Software Foundation, Inc. > License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> > This is free software: you are free to change and redistribute it. > There is NO WARRANTY, to the extent permitted by law. Type "show copying" > and "show warranty" for details. > This GDB was configured > as "--host=i686-pc-linux-gnu --target=arm-unknown-nto-qnx6.3.0"... > (no debugging symbols found) > (gdb) target remote localhost:3333 > Remote debugging using localhost:3333 > warning: while parsing target memory map (at line 2): Required element > <memory> is missing > 0x00000000 in ?? () > (gdb) > -gdb-----------------gdb-----------------gdb-----------------gdb---------------- > > As you can see, GDB's idea of the current PC is wrong.
Actually, I think this is a white lie at work. OpenOCD allows GDB connections to a powered down target. However, GDB will fail to connect if we don't reply to the 'g' packets(registers). A little white lie, in replying a 'g' packets with dummy values, fixes this. This is a *great* feature because it allows setting up the target via monitor commands from a GDB init script. Now you didn't include the log, so I don't know why fetching the registers didn't work. Possibly this is related to, or you are seing a second problem with the memory map. > I'm not completely sure > where GDB gets the wrong address from, but a "continue", "ctrl-c" sequence > gets me the correct address: > > -gdb-----------------gdb-----------------gdb-----------------gdb---------------- > (gdb) c > Continuing. > target state: halted > target halted in ARM state due to debug request, current mode: Supervisor > cpsr: 0x400000d3 pc: 0x23f09764 > MMU: disabled, D-Cache: disabled, I-Cache: enabled > > Program received signal SIGINT, Interrupt. > 0x23f09764 in ?? () > (gdb) c > Continuing. > target state: halted > target halted in ARM state due to debug request, current mode: Supervisor > cpsr: 0x400000d3 pc: 0x23f09764 > MMU: disabled, D-Cache: disabled, I-Cache: enabled > -gdb-----------------gdb-----------------gdb-----------------gdb---------------- This matches the white-lie 'g' packet upon connection phenomena. > I've also had problems with breakpoints not taken by GDB, but these problems > were not reproduceable so far. I've tested both the GDB that came with QNX > Momentics 6.3.2 and the version from Code Sourcery's 2007q3 release. > > Attached is the config file I've used. There was no GDB init script involved. -d3 log? -- Øyvind Harboe http://www.zylin.com/zy1000.html ARM7 ARM9 XScale Cortex JTAG debugger and flash programmer _______________________________________________ Openocd-development mailing list Openocd-development@lists.berlios.de https://lists.berlios.de/mailman/listinfo/openocd-development
