How to determine the order of the registers got, their width and count?
I am newbie in GDB. I had couple of questions 1. When I send out 'g' I get a full dump of the registers. Is there 'q' query packet I can send and ask the GDB server in what order(eax, ebx, ecx ...) will it dump the registers? 2. Before we do a 'g' can we tell the server that we are interested in 32 bit (EAX, ECX etc ...) only? 3. Can I send out a 'q' packet and ask the server whether it will give me back 32 or 64 bit registers? 4. Nowadays it is mostly 64 bit systems and they support both 32 and 64 bit. So my idea was to ask whatever I want. Please check out these transactions: Sending packet: $qSupported:multiprocess+;xmlRegisters=i386;qRelocInsn+#b5...Ack Packet received: ReverseStep+;ReverseContinue+;qXfer:features:read+ Packet qSupported (supported-packets) is supported Sending packet: $Hg0#df...Ack Packet received: OK Sending packet: $qXfer:features:read:target.xml:0,283#e8...Ack Packet received: m\n i386:x86-64\n\n Sending packet: $qXfer:features:read:target.xml:4c,283#4f...Ack Packet received: l 1. Question is how did it come up with the number 0,283 2. What range does 0,283 imply? Is it the number of lines in the target.xml file? 3. How can I get the total count? 4. Please see that the next time it does it from 4c,283. Where did it get these numbers? >> Packet received: m\n >> i386:x86-64\n\n 5. I guess i386:x86-64 means the system is an Intel system(i386), it supports both 32 bit(x86) and 64 bit (64). Is that right? Sorry for the long list of questions, just wanted to spill out ... . Many thanks in advance Cheers Ananda ___ bug-gdb mailing list bug-gdb@gnu.org https://lists.gnu.org/mailman/listinfo/bug-gdb
RE: Usage of vCont packet please
Hi Sergio, Thanks for replying. It compiles fine but the server complains with the following error: [gdb0 info] got message: "vCont?" [gdb0 info] Sending packet: "vCont;c;C;s;S" [gdb0 info] got message: "vCont;c:-1" [gdb0 error] Malformed vCont packet ";c:-1", ignoring I guess the server is dated and I shall see if I can fix the server side. The comment for vCont in the GDB website says vCont is new and using H is being obsoleted. I did try H and the server liked it. If you have any comments on my conlcusion please let me know Thanks Ananda -Original Message- From: Sergio Durigan Junior [mailto:sergi...@sergiodj.net] Sent: Thursday, May 22, 2014 5:34 PM To: Vardhana, Ananda Cc: bug-gdb@gnu.org Subject: Re: Usage of vCont packet please On Thursday, May 22 2014, Ananda Vardhana wrote: > Right now I send the packet Hc-1 meaning continue or make the target > run and the -1 signifies do it on all process. It works fine. What > would be the equivalent for that in vCont? I do check and vCont? > Support and the server does support it. Hello Ananda, You mean to use vCont to resume all threads of the inferior, right? > vCont;c-1 does not work and whatever I do with vcont it hangs. The > documentation in > https://sourceware.org/gdb/onlinedocs/gdb/Packets.html#thread%2did%20s > yntax > > Does not seem to help or I am misinterpreting. If you point me to URL > with usage, meaning and example if vCont that would be ideal It should be "vCont;c:-1" (note the colon between "c" and "-1"). Could you try that? Thanks, -- Sergio ___ bug-gdb mailing list bug-gdb@gnu.org https://lists.gnu.org/mailman/listinfo/bug-gdb
Usage of vCont packet please
Right now I send the packet Hc-1 meaning continue or make the target run and the -1 signifies do it on all process. It works fine. What would be the equivalent for that in vCont? I do check and vCont? Support and the server does support it. vCont;c-1 does not work and whatever I do with vcont it hangs. The documentation in https://sourceware.org/gdb/onlinedocs/gdb/Packets.html#thread%2did%20syntax Does not seem to help or I am misinterpreting. If you point me to URL with usage, meaning and example if vCont that would be ideal Thanks ___ bug-gdb mailing list bug-gdb@gnu.org https://lists.gnu.org/mailman/listinfo/bug-gdb
