aboutsummaryrefslogtreecommitdiff
path: root/gdbstub.c
AgeCommit message (Collapse)Author
2009-06-04fix gdbstub support for multiple threads in usermode, v3Nathan Froyd
When debugging multi-threaded programs, QEMU's gdb stub would report the correct number of threads (the qfThreadInfo and qsThreadInfo packets). However, the stub was unable to actually switch between threads (the T packet), since it would report every thread except the first as being dead. Furthermore, the stub relied upon cpu_index as a reliable means of assigning IDs to the threads. This was a bad idea; if you have this sequence of events: initial thread created new thread #1 new thread #2 thread #1 exits new thread #3 thread #3 will have the same cpu_index as thread #1, which would confuse GDB. (This problem is partly due to the remote protocol not having a good way to send thread creation/destruction events.) We fix this by using the host thread ID for the identifier passed to GDB when debugging a multi-threaded userspace program. The thread ID might wrap, but the same sort of problems with wrapping thread IDs would come up with debugging programs natively, so this doesn't represent a problem. Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
2009-05-26microblaze: Add GDB stub support.Edgar E. Iglesias
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-04-18Add 'static' to avoid a sparse warningblueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7175 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-13Fix ppc-softmmu warnings on OpenBSD hostblueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7099 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-08factor out setting pc in gdbstubaurel32
The code for handling the c and s packets both contain code for setting the pc. Move that code out to a common function. Signed-off-by: Nathan Froyd <froydnj@codesourcery.com> Acked-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7039 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-05gdbstub: Rework configuration via command line and monitor (Jan Kiszka)aliguori
Introduce a more canonical gdbstub configuration (system emulation only) via the new switch '-gdb dev'. Keep '-s' as shorthand for '-gdb tcp::1234'. Use the same syntax also for the corresponding monitor command 'gdbserver'. Its default remains to listen on TCP port 1234. Changes in v4: - Rebased over new command line switches meta file Changes in v3: - Fix documentation Changes in v2: - Support for pipe-based like to gdb (target remote | qemu -gdb stdio) - Properly update the qemu-doc Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6992 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-28gdbstub: Allow re-instantiation (Jan Kiszka)aliguori
[ Note: depends on char closing fixes ] Properly clean up the gdbstub when the user tries to re-open it (possibly under a different address). Moreover, allow to shut it down from the monitor via 'gdbserver none'. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6913 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-28gdbstub: Drop redundant memset after qemu_mallocz (Jan Kiszka)aliguori
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6897 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-12Guest debugging support for KVM (Jan Kiszka)aliguori
This is a backport of the guest debugging support for the KVM accelerator that is now part of the KVM tree. It implements the reworked KVM kernel API for guest debugging (KVM_CAP_SET_GUEST_DEBUG) which is not yet part of any mainline kernel but will probably be 2.6.30 stuff. So far supported is x86, but PPC is expected to catch up soon. Core features are: - unlimited soft-breakpoints via code patching - hardware-assisted x86 breakpoints and watchpoints Changes in this version: - use generic hook cpu_synchronize_state to transfer registers between user space and kvm - push kvm_sw_breakpoints into KVMState Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6825 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-07Use a dedicated function to request exit from execution loopaurel32
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6762 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-07Fix BSD userblueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6734 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-05monitor: Pass-through for gdbstub (Jan Kiszka)aliguori
Create a monitor terminal and pass it through the gdbstub. This allows to use gdb's monitor command to access the QEMU monitor. Works for all commands except for non-detached migration and password retrieval (user will receive error messages instead). Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6718 c046a42c-6fe2-441c-8c8c-71466251a162
2009-02-05toplevel: remove error handling from qemu_malloc() callers (Avi Kivity)aliguori
Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6531 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-24target-ppc: Change core powerpc gdbstub bits to be XML-awareaurel32
Define GDB_CORE_XML and hack things similarly to ARM so that despite the FP registers coming in between the GPRs and some status registers, everything works out OK no matter which kind of GDB we're communicating with. It matters whether we're built to target 64-bit or 32-bit cores. I think there are still problems if we are debugging 32-bit programs on a built-for-64-bit QEMU (QEMU will always send 64-bit registers), but I don't know if there's a good way around that at the time being. Signed-off-by: Nathan Froyd <froydnj@codesourcery.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6421 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-22Rework vm_state_change notifiers (Jan Kiszka)aliguori
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6402 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-18add an init function parameter to qemu_chr_open()aurel32
And use it for the malta emulation. Fix segfault introduced in revision 6352. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6365 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-15Fix bsd-user buildblueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6312 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-13Fix gdbserver number of registers (Tristan Gingold)blueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6280 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-07gdbstub: fix gdbserver_forkedgar_igl
As reported by Martin Mohring fork doesn't work with NPTL. A fix is attached that makes the also attached test run (tested with ARM CodeSourcery 2008q3 on an x86_64 Fedora Core with kernel 2.6.23). Signed-off-by: Laurent Desnogues <laurent.desnogues@gmail.com> Acked-by: Edgar E. Iglesias <edgar.iglesias@gmail.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6195 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-04Update FSF address in GPL/LGPL boilerplateaurel32
The attached patch updates the FSF address in the GPL/LGPL boilerplate in most GPL/LGPLed files, and also in COPYING.LIB. Signed-off-by: Stuart Brady <stuart.brady@gmail.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6162 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-18User-mode GDB stub improvements - handle signalsaurel32
Handle signals in the user-mode GDB stub. Report them to GDB, and allow it to change or cancel them. Also correct the protocol numbering; it happens to match Linux numbering for SIGINT and SIGTRAP, but that's just good fortune. Signed-off-by: Daniel Jacobowitz <dan@codesourcery.com> Acked-by: Edgar E. Iglesias <edgar.iglesias@gmail.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6096 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-18User-mode GDB stub improvements - handle forkaurel32
Close gdbserver in child processes, so that only one stub tries to talk to GDB at a time. Updated from an earlier patch by Paul Brook. Signed-off-by: Daniel Jacobowitz <dan@codesourcery.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6095 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-07target-alpha: gdb-stub supportaurel32
(Vince Weaver) git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5945 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-07gdbstub: kill a warningaurel32
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5943 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-07Fix some new warnings introduced after r5022blueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5933 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-30gdbstub: Fix access to PPC FPRsaurel32
Obviously, someone forgot to rebase the index before accessing one of the 32 FPRs. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5821 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-18gdbstub: manage CPUs as threads (Jan Kiszka)aliguori
This patch enhances QEMU's built-in debugger for SMP guest debugging. Using the thread support of the gdb remote protocol, each VCPU is mapped on a pseudo thread and exposed to the gdb frontend. This way you can easy switch the focus of gdb between the VCPUs and observe their states. On breakpoint hit, the focus is automatically adjusted just as for normal multi-threaded application under gdb control. Furthermore, the patch propagates breakpoint and watchpoint insertions or removals to all CPUs, not just the current one as it was the case so far. Without this, SMP guest debugging was practically unfeasible. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5743 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-18Refactor and enhance break/watchpoint API (Jan Kiszka)aliguori
This patch prepares the QEMU cpu_watchpoint/breakpoint API to allow the succeeding enhancements this series comes with. First of all, it overcomes MAX_BREAKPOINTS/MAX_WATCHPOINTS by switching to dynamically allocated data structures that are kept in linked lists. This also allows to return a stable reference to the related objects, required for later introduced x86 debug register support. Breakpoints and watchpoints are stored with their full information set and an additional flag field that makes them easily extensible for use beyond pure guest debugging. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5738 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-18gdbstub: Return appropriate watch message to gdb (Jan Kiszka)aliguori
Return the appropriate type prefix (r, a, none) when reporting watchpoint hits to the gdb front-end. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5737 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-31Implement "info chardev" command. (Gerd Hoffmann)aliguori
This patch makes qemu keep track of the character devices in use and implements a "info chardev" monitor command to print a list. qemu_chr_open() sticks the devices into a linked list now. It got a new argument (label), so there is a name for each device. It also assigns a filename to each character device. By default it just copyes the filename passed in. Individual drivers can fill in something else though. qemu_chr_open_pty() sets the filename to name of the pseudo tty allocated. Output looks like this: (qemu) info chardev monitor: filename=unix:/tmp/run.sh-26827/monitor,server,nowait serial0: filename=unix:/tmp/run.sh-26827/console,server serial1: filename=pty:/dev/pts/5 parallel0: filename=vc:640x480 Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5575 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-25Use snprintf to please OpenBSD linkerblueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5529 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-21target-ppc: Convert XER accesses to TCGaurel32
Define XER bits as a single register and access them individually to avoid defining 5 32-bit registers (TCG doesn't permit to map 8-bit registers). Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5500 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-14gdbstub: remove unused local variableaurel32
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5489 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-11CRIS: Handle GDB writes to pregs.edgar_igl
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5461 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-11Add GDB XML register description support.pbrook
Signed-off-by: Paul Brook <paul@codesourcery.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5459 c046a42c-6fe2-441c-8c8c-71466251a162
2008-09-18Move the active FPU registers into env again, and use more TCG registersths
to access them. Signed-off-by: Thiemo Seufer <ths@networkno.de> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5252 c046a42c-6fe2-441c-8c8c-71466251a162
2008-09-14Fix warnings that would be caused by gcc flag -Wwrite-stringsblueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5206 c046a42c-6fe2-441c-8c8c-71466251a162
2008-08-21Fix OpenBSD linker warningsblueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5044 c046a42c-6fe2-441c-8c8c-71466251a162
2008-06-27More efficient target register / TC accesses.ths
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4794 c046a42c-6fe2-441c-8c8c-71466251a162
2008-06-09Clean up MMIO TLB handling.pbrook
The IO index is now stored in its own field, instead of being wedged into the vaddr field. This eliminates the ROMD and watchpoint host pointer weirdness. The IO index space is expanded by 1 bit, and several additional bits are made available in the TLB vaddr field. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4704 c046a42c-6fe2-441c-8c8c-71466251a162
2008-06-07Fix Sparc32plus GDBstub supportblueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4689 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-17Support signal reception in user-mode. Handle when the peer terminates or ↵edgar_igl
aborts the connection. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4483 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-17Add support for the 'k' (kill) and 'D' (detach) packets (Jason Wessel).edgar_igl
Implement the 'k' gdbserial packet which kills the qemu instance via the debugger stub. Implement the 'D' detach packet for the gdb stub such that you can disconnect gdb with the "detach" command. This required implementing a cpu_breakpoint_remove_all() and a cpu_watchpoint_remove_all() function to cleanup all the breakpoints and watchpoints prior to leaving the gdb stub else simulation can stop with no debugger attached. On a '?' packet remove all the breakpoints and watchpoints. This is considered more of a safety net in case you force killed gdb or it crashed and you are reconnecting. The identical behavior exists for kgdb in the linux kernel. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4478 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-09x86_64 and better i386 supportbellard
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4394 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-09Remove x86-64 specific reg fillers.edgar_igl
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4392 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-09Debugger single step without interrupts (Jason Wessel).edgar_igl
This patch allows the qemu backend debugger to single step an instruction without running the hardware interrupts. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4391 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-09Add x86_64 gdb stub for qemu (Jason Wessel).edgar_igl
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4390 c046a42c-6fe2-441c-8c8c-71466251a162
2008-03-14Improve readability by moving the continue operation into aseparate function.edgar_igl
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4059 c046a42c-6fe2-441c-8c8c-71466251a162
2008-02-28More consistent naming for CRIS register-number macros.edgar_igl
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3996 c046a42c-6fe2-441c-8c8c-71466251a162
2008-02-12Make MIPS MT implementation more cache friendly.ths
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3981 c046a42c-6fe2-441c-8c8c-71466251a162
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-02 16:40:08 +0000