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gdb/2541: ARM single step problem with instruction 0xa5ffffeb
- From: julien dot lincy at thomson dot net
- To: gdb-gnats at sources dot redhat dot com
- Cc: dan at codesourcery dot com
- Date: 22 Oct 2008 11:41:01 -0000
- Subject: gdb/2541: ARM single step problem with instruction 0xa5ffffeb
- Reply-to: julien dot lincy at thomson dot net
>Number: 2541
>Category: gdb
>Synopsis: ARM single step problem with instruction 0xa5ffffeb
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: support
>Submitter-Id: net
>Arrival-Date: Wed Oct 22 11:48:01 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator: J. Lincy
>Release: GDB 6.8
>Organization:
>Environment:
ARM 1136 Linux 2.6.21 (EABI)
>Description:
I have a problem single stepping with a simple C program on ARM, with the instruction 0xa5ffffeb.
8538: a5ffffeb ldrgeb pc, [pc, #4075]! ; 952b <__clz_tab+0x6b>
GDB stops with the error "Invalid update to pc in instruction".
The C program i'm trying to test is attached.
The ARM I use is an ARM v1136 (a bit specific...).
I compiled GDB with the following options
./configure --enable-debug --build=i686-pc-linux-gnu --host=i686-pc-linux-gnu --target=i686-pc-linux-gnu --prefix=/home/lincyj/gdb-6.8/build --disable-werror --disable-sim
And gdbserver with the following options:
../gdb/gdbserver/configure --host=armeb-none-linux-gnueabi --target=armeb-none-linux-gnueabi --prefix=/home/lincyj/gdb-6.8/gdb-6.8/gdbserver_build
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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