On 7 November 2014 02:27, Qu, Strong <stro...@qti.qualcomm.com> wrote: > Hello, > > > > We have implemented gdb server in one of our project and we are using Linaro > aarch64-none-elf-gdb.exe as gdb client. Our gdb server will response to > packet 'qXfer:features:read:target.xml:0,fff' with a xml file which only > claims feature ‘org.gnu.gdb.aarch64.core’. However, when I issue ‘info reg’ > command with the gdb client, it actually sends out a packet ‘$p42#d6’, which > is trying to read fpsr if I understand correctly. Is this an expected > behavior or not? I just want to figure out whether our gdb server send some > bad info to the gdb client and made the client thinks FP registers are > valid. I hope I made my question clear and I’m really appreciate if anybody > can help us on this again. > > > > Thanks, > > > > Strong > > > _______________________________________________ > linaro-toolchain mailing list > linaro-toolchain@lists.linaro.org > http://lists.linaro.org/mailman/listinfo/linaro-toolchain >
Hi Strong, GDB server will receive a register read request based on registers information given in xml target description on the client side. You can find these xml in gdb sources under: binutils-gdb/gdb/features If GDB is requesting a read for certain register that you expect it should not then you have to verify if its there in the xml description or not. There is a chance you might have developed your gdbserver implementation with some version that doesnt match with current version of linaro-gdb. I hope this helps. Let me know if you need to know anything further. Thanks! -- Omair _______________________________________________ linaro-toolchain mailing list linaro-toolchain@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-toolchain
