[Bug sim/13678] New: ARM: internal error (register not updated) inremote-sim.c

["adam at irvine dot com" <sourceware-bugzilla at sourceware dot org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=13678

             Bug #: 13678
           Summary: ARM: internal error (register not updated) in
                    remote-sim.c
           Product: gdb
           Version: 7.4
            Status: NEW
          Severity: normal
          Priority: P2
         Component: sim
        AssignedTo: unassigned@sourceware.org
        ReportedBy: adam@irvine.com
    Classification: Unclassified


I built gdb for arm-elf and tried it on a program I built with GCC.  I'm not
sure I configured things right or if the target program was built correctly,
but the gdb code looks suspicious enough that it's worth reporting anyway.

I used the commands:
gdb hello
(gdb) target sim
(gdb) load
(gdb) r
Starting program...
.../gdb/remote-sim.c:531: internal-error: Register 25 not updated

In sim/arm/wrapper.c, sim_store_register() appears to return -1 if the register
is any general register, floating-point register, or PS.

In gdb/remote-sim.c, gdbsim_store_register() calls sim_store_register() and
then displays the above-mentioned internal error if that function returns a
negative value.  "What we've got here is a failure to communicate..."

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