Do we know if the Windows gdb binary links against expat? Without expat XML support is disabled.
On 11 November 2014 06:51, Omair Javaid <omair.jav...@linaro.org> wrote: > Have you implemented a qXfer packet response if not you can do so to > use xml description provided by target. > > Here is a gdb help link that describe how to client can query target.xml. > > https://sourceware.org/gdb/onlinedocs/gdb/Retrieving-Descriptions.html#Retrieving-Descriptions > > > On 10 November 2014 19:42, Qu, Strong <stro...@qti.qualcomm.com> wrote: >> Thanks, Omair. I did check xml files in Linaro's source >> (gdb-linaro-7.6.1-2013.10). In the target.xml file our gdb server sends back >> to gdb client, we only include regsiters X0~X30, sp, pc and cpsr. It's close >> to gdb-linaro-7.6.1-2013.10\gdb\features\aarch64-core.xml, which is included >> in aarch64-without-fpu.xml. I don't know how the server can notify the >> client that it does not have FPU supported. So I assume if the target.xml >> does not claim feature 'org.gnu.gdb.aarch64.fpu’, it would be deemed as no >> FPU supporting. >> For now, I added some code in our code to return the value of fpsr and fpcr >> to make the gdb client happy. >> >> Regards, >> Strong >> >> -----Original Message----- >> From: Omair Javaid [mailto:omair.jav...@linaro.org] >> Sent: Monday, November 10, 2014 3:30 AM >> To: Qu, Strong >> Cc: linaro-toolchain@lists.linaro.org >> Subject: Re: [Question] Should gdb client query FP registers even if gdb >> server does not report having org.gnu.gdb.aarch64.fpu feature? >> >> 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 -- Will Newton Toolchain Working Group, Linaro _______________________________________________ linaro-toolchain mailing list linaro-toolchain@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-toolchain
