Hi,
I'm trying to debug U-Boot on a Pandaboard (Cortex-A9) using the latest
OpenOCD release (0.8.0).
My problem is that, after setting a breakpoint, I'm not able to single
step anymore.
Basically what I do is:
1) launch OpenOCD:
$ openocd -s -f interface/ftdi/jtagkey.cfg -f board/imx53loco.cfg
2) open a telnet session:
$ telnet localhost 4444
> halt
> load_image /home/asem/develop/u-boot/spl/u-boot-spl.bin 0x40300000
> reg pc 0x40300000
> reg cpsr 0x1d3
3) launch gdb:
$ arm-linux-gnueabihf-gdb u-boot-spl
(gdb) target remote localhost:3333
(gdb) b s_init
(gdb) c
then, when the breakpoint is hit, the target correctly halts, but after
this point, even if I issue an "s" or "n" command I'm stuck at the same
instruction and the pc register isn't incremented.
This is the output:
--------------------begin --------------------
(gdb) b s_init
Breakpoint 1 at 0x403003ec: file
arch/arm/cpu/armv7/omap-common/hwinit-common.c, line 113.
(gdb) c
Continuing.
Breakpoint 1, s_init () at
arch/arm/cpu/armv7/omap-common/hwinit-common.c:113
113 {
(gdb) i r pc
pc 0x403003ec 0x403003ec <s_init>
(gdb) i r cpsr
cpsr 0x1f3 499
(gdb) n
Breakpoint 1, s_init () at
arch/arm/cpu/armv7/omap-common/hwinit-common.c:113
113 {
(gdb) s
Breakpoint 1, s_init () at
arch/arm/cpu/armv7/omap-common/hwinit-common.c:113
113 {
(gdb) n
Breakpoint 1, s_init () at
arch/arm/cpu/armv7/omap-common/hwinit-common.c:113
113 {
(gdb) i r pc
pc 0x403003ec 0x403003ec <s_init>
(gdb)
-------------------- end --------------------
I've also tried to force hardware breakpoint:
> gdb_breakpoint_override hard
but the results were the same.
Has anyone faced this issue?
Thank you
regards
Luca
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