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2018-05-25gdbstub: Clarify what gdb_handlesig() is doingPeter Maydell
gdb_handlesig()'s behaviour is not entirely obvious at first glance. Add a doc comment for it, and also add a comment explaining why it's ok for gdb_do_syscallv() to ignore gdb_handlesig()'s return value. (Coverity complains about this: CID 1390850.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <20180515181958.25837-1-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-03-27gdbstub: send a termination packet instead of crashing gdbKONRAD Frederic
Since the commit: commit 4486e89c219c0d1b9bd8dfa0b1dd5b0d51ff2268 Author: Stefan Hajnoczi <stefanha@redhat.com> Date: Wed Mar 7 14:42:05 2018 +0000 vl: introduce vm_shutdown() GDB crashes when qemu exits (at least on sparc-softmmu): Remote communication error. Target disconnected.: Connection reset by peer. Quitting: putpkt: write failed: Broken pipe. So send a packet to exit GDB before we exit QEMU: [Inferior 1 (Thread 0) exited normally] Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: KONRAD Frederic <frederic.konrad@adacore.com> Message-id: 1521538773-30802-1-git-send-email-frederic.konrad@adacore.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-07-14gdbstub: rename cpu_index -> cpu_gdb_indexAlex Bennée
This is to make it clear the index is purely a gdbstub function and should not be confused with the value of cpu->cpu_index. At the same time we move the function from the header to gdbstub itself which will help with later changes. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Greg Kurz <groug@kaod.org> Reviewed-by: Claudio Imbrenda <imbrenda@linux.vnet.ibm.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20170712105216.747-3-alex.bennee@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-06-07linux-user: Remove redundant gdb_queuesig()Timothy E Baldwin
Signed-off-by: Timothy Edward Baldwin <T.E.Baldwin99@members.leeds.ac.uk> Message-id: 1441497448-32489-22-git-send-email-T.E.Baldwin99@members.leeds.ac.uk Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2016-05-19qemu-common: push cpu.h inclusion out of qemu-common.hPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-09-07gdbstub: Implement gdb_do_syscallv()Peter Maydell
Implement a variant of the existing gdb_do_syscall() which takes a va_list. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Tested-by: Christopher Covington <cov@codeaurora.org> Message-id: 1439483745-28752-4-git-send-email-peter.maydell@linaro.org
2015-07-09gdbstub: Change gdbserver_fork() to accept cpu instead of envPeter Crosthwaite
All callsites to this function navigate the cpu->env_ptr only for the function to take the env ptr back to the original cpu ptr. Change the function to just pass in the CPU pointer instead. Removes a core code usage of ENV_GET_CPU() (in gdbstub.c). Cc: Riku Voipio <riku.voipio@iki.fi> Reviewed-by: Andreas Färber <afaerber@suse.de> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2015-06-19semihosting: create SemihostingConfig structure and semihost.hLeon Alrae
Remove semihosting_enabled and semihosting_target and replace them with SemihostingConfig structure containing equivalent fields. The structure is defined in vl.c where it is actually set. Also introduce separate header file include/exec/semihost.h allowing to access semihosting config related stuff from target specific semihosting code. Signed-off-by: Leon Alrae <leon.alrae@imgtec.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1434643256-16858-2-git-send-email-leon.alrae@imgtec.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-12-11Add the "-semihosting-config" option.Liviu Ionescu
The usual semihosting behaviour is to process the system calls locally and return; unfortuantelly the initial implementation dinamically changed the target to GDB during debug sessions, which, for the usual arm-none-eabi-gdb, is not implemented. The result was that during debug sessions the semihosting calls were discarded. This patch adds a configuration variable and an option to set it on the command line: -semihosting-config [enable=on|off,]target=native|gdb|auto This option enables semihosting and defines where the semihosting calls will be addressed, to QEMU ('native') or to GDB ('gdb'). The default is auto, which means 'gdb' during debug sessions and 'native' otherwise. Signed-off-by: Liviu Ionescu <ilg@livius.net> Message-id: 1416341957-9796-1-git-send-email-ilg@livius.net [PMM: moved declaration and definition of semihosting_target to gdbstub.h and gdbstub.c to fix build failure on linux-user] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-07-27cpu: Introduce CPUClass::gdb_{read,write}_register()Andreas Färber
Completes migration of target-specific code to new target-*/gdbstub.c. Acked-by: Michael Walle <michael@walle.cc> (for lm32) Acked-by: Max Filippov <jcmvbkbc@gmail.com> (for xtensa) Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-27gdbstub: Replace GET_REG*() macros with gdb_get_reg*() functionsAndreas Färber
This avoids polluting the global namespace with a non-prefixed macro and makes it obvious in the call sites that we return. Semi-automatic conversion using, e.g., sed -i 's/GET_REGL(/return gdb_get_regl(mem_buf, /g' target-*/gdbstub.c followed by manual tweaking for sparc's GET_REGA() and Coding Style. Acked-by: Michael Walle <michael@walle.cc> (for lm32) Acked-by: Max Filippov <jcmvbkbc@gmail.com> (for xtensa) Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-25Merge remote-tracking branch 'riku/linux-user-for-upstream' into stagingAnthony Liguori
* riku/linux-user-for-upstream: (21 commits) linux-user: Handle compressed ISA encodings when processing MIPS exceptions linux-user: Unlock mmap_lock when resuming guest from page_unprotect linux-user: Reset copied CPUs in cpu_copy() always linux-user: Fix epoll on ARM hosts linux-user: fix segmentation fault passing with h2g(x) != x linux-user: Fix pipe syscall return for SPARC linux-user: Fix target_stat and target_stat64 for OpenRISC linux-user: Avoid conditional cpu_reset() configure: Make NPTL non-optional linux-user: Enable NPTL for x86-64 linux-user: Add i386 TLS setter linux-user: Clean up handling of clone() argument order linux-user: Add missing 'break' in i386 get_thread_area syscall linux-user: Enable NPTL for m68k linux-user: Enable NPTL for SPARC targets linux-user: Enable NPTL for OpenRISC linux-user: Move includes of target-specific headers to end of qemu.h configure: Enable threading for unicore32-linux-user configure: Enable threading on all ppc and mips linux-user targets configure: Don't say target_nptl="no" if there is no linux-user target ... Conflicts: linux-user/main.c Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-23gdbstub: Change gdb_register_coprocessor() argument to CPUStateAndreas Färber
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-23gdbstub: Change gdb_handlesig() argument to CPUStateAndreas Färber
Prepares for changing GDBState::c_cpu to CPUState. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-23gdbstub: Change syscall callback argument to CPUStateAndreas Färber
Callback implementations were specific to arm and m68k, so can easily cast to ARMCPU and M68kCPU respectively. Prepares for changing GDBState::c_cpu to CPUState. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-22configure: Make NPTL non-optionalPeter Maydell
Now all linux-user targets support building with NPTL, we can make it mandatory. This is a good idea because: * NPTL is no longer new and experimental; it is completely standard * in practice, linux-user without NPTL is nearly useless for binaries built against non-ancient glibc * it allows us to delete the rather untested code for handling the non-NPTL configuration Note that this patch leaves the CONFIG_USE_NPTL ifdefs in the bsd-user codebase alone. This makes no change for bsd-user, since our configure test for NPTL had a "#include <linux/futex.h>" which means bsd-user would never have been compiled with CONFIG_USE_NPTL defined, and it still is not. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2013-06-28gdbstub: Set gdb_set_stop_cpu() argument to CPUStateAndreas Färber
Use CPUState::env_ptr for now. Prepares for changing cpu_handle_guest_debug() argument to CPUState. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-02-16cpu: Move host_tid field to CPUStateAndreas Färber
Change gdbstub's cpu_index() argument to CPUState now that CPUArchState is no longer used. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-01-15cpu: Move cpu_index field to CPUStateAndreas Färber
Note that target-alpha accesses this field from TCG, now using a negative offset. Therefore the field is placed last in CPUState. Pass PowerPCCPU to [kvm]ppc_fixup_cpu() to facilitate this change. Move common parts of mips cpu_state_reset() to mips_cpu_reset(). Acked-by: Richard Henderson <rth@twiddle.net> (for alpha) [AF: Rebased onto ppc CPU subclasses and openpic changes] Signed-off-by: Andreas Färber <afaerber@suse.de>
2012-12-19exec: move include files to include/exec/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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