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2024-07-22gdbstub: Add helper function to unregister GDB register spaceSalil Mehta1-0/+6
Add common function to help unregister the GDB register space. This shall be done in context to the CPU unrealization. Note: These are common functions exported to arch specific code. For example, for ARM this code is being referred in associated arch specific patch-set: Link: https://lore.kernel.org/qemu-devel/20230926103654.34424-1-salil.mehta@huawei.com/ Signed-off-by: Salil Mehta <salil.mehta@huawei.com> Tested-by: Vishnu Pajjuri <vishnu@os.amperecomputing.com> Reviewed-by: Gavin Shan <gshan@redhat.com> Tested-by: Xianglai Li <lixianglai@loongson.cn> Tested-by: Miguel Luis <miguel.luis@oracle.com> Reviewed-by: Shaoqin Huang <shahuang@redhat.com> Reviewed-by: Vishnu Pajjuri <vishnu@os.amperecomputing.com> Tested-by: Zhao Liu <zhao1.liu@intel.com> Acked-by: Igor Mammedov <imammedo@redhat.com> Message-Id: <20240716111502.202344-8-salil.mehta@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2024-06-24gdbstub: move enums into separate headerAlex Bennée1-9/+0
This is an experiment to further reduce the amount we throw into the exec headers. It might not be as useful as I initially thought because just under half of the users also need gdbserver_start(). Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20240620152220.2192768-3-alex.bennee@linaro.org>
2024-06-24include/exec: add missing include guard commentAlex Bennée1-1/+1
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20240620152220.2192768-2-alex.bennee@linaro.org>
2024-02-28gdbstub: expose api to find registersAlex Bennée1-0/+28
Expose an internal API to QEMU to return all the registers for a vCPU. The list containing the details required to called gdb_read_register(). Based-on: <20231025093128.33116-15-akihiko.odaki@daynix.com> Cc: Akihiko Odaki <akihiko.odaki@daynix.com> Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20240227144335.1196131-22-alex.bennee@linaro.org>
2024-02-28gdbstub: Add members to identify registers to GDBFeatureAkihiko Odaki1-0/+3
These members will be used to help plugins to identify registers. The added members in instances of GDBFeature dynamically generated by CPUs will be filled in later changes. Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> Message-Id: <20231213-gdb-v17-10-777047380591@daynix.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20240227144335.1196131-15-alex.bennee@linaro.org>
2024-02-28gdbstub: Simplify XML lookupAkihiko Odaki1-0/+6
Now we know all instances of GDBFeature that is used in CPU so we can traverse them to find XML. This removes the need for a CPU-specific lookup function for dynamic XMLs. Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20231213-gdb-v17-7-777047380591@daynix.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20240227144335.1196131-12-alex.bennee@linaro.org>
2024-02-28gdbstub: Change gdb_get_reg_cb and gdb_set_reg_cbAkihiko Odaki1-2/+2
Align the parameters of gdb_get_reg_cb and gdb_set_reg_cb with the gdb_read_register and gdb_write_register members of CPUClass to allow to unify the logic to access registers of the core and coprocessors in the future. Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20231213-gdb-v17-6-777047380591@daynix.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20240227144335.1196131-11-alex.bennee@linaro.org>
2024-02-28gdbstub: Use GDBFeature for gdb_register_coprocessorAkihiko Odaki1-1/+1
This is a tree-wide change to introduce GDBFeature parameter to gdb_register_coprocessor(). The new parameter just replaces num_regs and xml parameters for now. GDBFeature will be utilized to simplify XML lookup in a following change. Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> Acked-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20231213-gdb-v17-4-777047380591@daynix.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20240227144335.1196131-9-alex.bennee@linaro.org>
2023-11-08gdbstub: Introduce GDBFeatureBuilderAkihiko Odaki1-0/+50
GDBFeatureBuilder unifies the logic to generate dynamic GDBFeature. Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20231025093128.33116-4-akihiko.odaki@daynix.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20231106185112.2755262-11-alex.bennee@linaro.org>
2023-11-08gdbstub: Introduce gdb_find_static_feature()Akihiko Odaki1-0/+8
This function is useful to determine the number of registers exposed to GDB from the XML name. Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20231025093128.33116-3-akihiko.odaki@daynix.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20231106185112.2755262-10-alex.bennee@linaro.org>
2023-11-08gdbstub: Add num_regs member to GDBFeatureAkihiko Odaki1-0/+1
Currently the number of registers exposed to GDB is written as magic numbers in code. Derive the number of registers GDB actually see from XML files to replace the magic numbers in code later. Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20231025093128.33116-2-akihiko.odaki@daynix.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20231106185112.2755262-9-alex.bennee@linaro.org>
2023-10-11gdbstub: Remove gdb_has_xml variableAkihiko Odaki1-8/+0
GDB has XML support since 6.7 which was released in 2007. It's time to remove support for old GDB versions without XML support. Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20230912224107.29669-12-akihiko.odaki@daynix.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20231009164104.369749-19-alex.bennee@linaro.org>
2023-10-11gdbstub: Introduce GDBFeature structureAkihiko Odaki1-2/+7
Before this change, the information from a XML file was stored in an array that is not descriptive. Introduce a dedicated structure type to make it easier to understand and to extend with more fields. Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230912224107.29669-6-akihiko.odaki@daynix.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20231009164104.369749-13-alex.bennee@linaro.org>
2023-08-30gdbstub: move comment for gdb_register_coprocessorAlex Bennée1-0/+10
Use proper kdoc style comments for this API function. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230829161528.2707696-13-alex.bennee@linaro.org>
2023-08-30gdbstub: replace global gdb_has_xml with a functionAlex Bennée1-5/+5
Try and make the self reported global hack a little less hackish by providing a query function instead. As gdb_has_xml was always set if we negotiated XML we can now use the presence of ->target_xml as the test instead. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230829161528.2707696-12-alex.bennee@linaro.org>
2023-03-07gdbstub: move syscall handling to new fileAlex Bennée1-102/+0
Our GDB syscall support is the last chunk of code that needs target specific support so move it to a new file. We take the opportunity to move the syscall state into its own singleton instance and add in a few helpers for the main gdbstub to interact with the module. I also moved the gdb_exit() declaration into syscalls.h as it feels pretty related and most of the callers of it treat it as such. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230302190846.2593720-22-alex.bennee@linaro.org> Message-Id: <20230303025805.625589-22-richard.henderson@linaro.org>
2023-03-07gdbstub: move register helpers into standalone includeAlex Bennée1-86/+0
These inline helpers are all used by target specific code so move them out of the general header so we don't needlessly pollute the rest of the API with target specific stuff. Note we have to include cpu.h in semihosting as it was relying on a side effect before. Reviewed-by: Taylor Simpson <tsimpson@quicinc.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230302190846.2593720-21-alex.bennee@linaro.org> Message-Id: <20230303025805.625589-21-richard.henderson@linaro.org>
2023-03-07gdbstub: move chunks of user code into own filesAlex Bennée1-21/+0
The process was pretty similar to the softmmu move except we take the time to split stuff between user.c and user-target.c to avoid as much target specific compilation as possible. We also start to make use of our shiny new header scheme so the user-only helpers can be included without the rest of the exec/gsbstub.h cruft. As before we split some functions into user and softmmu versions Reviewed-by: Fabiano Rosas <farosas@suse.de> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230302190846.2593720-12-alex.bennee@linaro.org> Message-Id: <20230303025805.625589-12-richard.henderson@linaro.org>
2023-03-07gdbstub: Make syscall_complete/[gs]et_reg target-agnostic typedefsPhilippe Mathieu-Daudé1-3/+4
Prototypes using gdb_syscall_complete_cb() or gdb_?et_reg_cb() don't depend on "cpu.h", thus are not target-specific. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20221214143659.62133-1-philmd@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230302190846.2593720-4-alex.bennee@linaro.org> Message-Id: <20230303025805.625589-4-richard.henderson@linaro.org>
2022-06-28gdbstub: Adjust gdb_syscall_complete_cb declarationRichard Henderson1-2/+1
Change 'ret' to uint64_t. This resolves a FIXME in the m68k and nios2 semihosting that we've lost data. Change 'err' to int. There is nothing target-specific about the width of the errno value. Reviewed-by: Luc Michel <lmichel@kalray.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-28semihosting: Split out semihost_sys_lseekRichard Henderson1-0/+5
Split out the non-ARM specific portions of SYS_SEEK to a reusable function. This handles all GuestFD. Isolate the curious ARM-specific return value processing to a new callback, common_semi_seek_cb. Expand the internal type of the offset to int64_t, and provide the whence argument, which will be required by m68k and nios2 semihosting. Note that gdb_do_syscall %x reads target_ulong, not int. Reviewed-by: Luc Michel <lmichel@kalray.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-28include/exec: Define errno values in gdbstub.hRichard Henderson1-0/+22
Define constants for the errno values defined by the gdb remote fileio protocol. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-28include/exec: Move gdb_stat and gdb_timeval to gdbstub.hRichard Henderson1-0/+25
We have two copies of these structures, and require them in semihosting/ going forward. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-28include/exec: Move gdb open flags to gdbstub.hRichard Henderson1-0/+9
There were 3 copies of these flags. Place them in the file with gdb_do_syscall, with which they belong. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-04-06Replace TARGET_WORDS_BIGENDIANMarc-André Lureau1-1/+1
Convert the TARGET_WORDS_BIGENDIAN macro, similarly to what was done with HOST_BIG_ENDIAN. The new TARGET_BIG_ENDIAN macro is either 0 or 1, and thus should always be defined to prevent misuse. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Suggested-by: Halil Pasic <pasic@linux.ibm.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220323155743.1585078-8-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-03-06exec/gdbstub: Make gdb_exit() / gdb_set_stop_cpu() target agnosticPhilippe Mathieu-Daudé1-12/+13
gdb_exit() and gdb_set_stop_cpu() prototypes don't have to be target specific. Remove this limitation to be able to build softmmu/cpus.c and softmmu/runstate.c once for all targets. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220207075426.81934-19-f4bug@amsat.org>
2021-02-15gdbstub: Remove unused gdb_get_float32() and gdb_get_float64()Peter Maydell1-20/+0
The functions gdb_get_float32() and gdb_get_float64() are now unused; remove them. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20210208113428.7181-5-peter.maydell@linaro.org> Message-Id: <20210211122750.22645-14-alex.bennee@linaro.org>
2021-01-18gdbstub: drop gdbserver_cleanup in favour of gdb_exitAlex Bennée1-3/+11
Despite it's name it didn't actually clean-up so let us document gdb_exit() better and use that. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20210108224256.2321-9-alex.bennee@linaro.org>
2021-01-18gdbstub: drop CPUEnv from gdb_exit()Alex Bennée1-1/+1
gdb_exit() has never needed anything from env and I doubt we are going to start now. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20210108224256.2321-8-alex.bennee@linaro.org>
2020-05-06gdbstub/linux-user: support debugging over a unix socketAlex Bennée1-5/+9
While debugging over TCP is fairly straightforward now we have test cases that want to orchestrate via make and currently a parallel build fails as two processes can't use the same listening port. While system emulation offers a wide cornucopia of connection methods thanks to the chardev abstraction we are a little more limited for linux user. Thankfully the programming API for a TCP socket and a local UNIX socket is pretty much the same once it's set up. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20200430190122.4592-7-alex.bennee@linaro.org>
2020-05-06gdbstub: Introduce gdb_get_float64() to get 64-bit float registersPhilippe Mathieu-Daudé1-0/+11
When converted to use GByteArray in commits 462474d760c and a010bdbe719, the call to stfq_p() was removed. This call serialize a float. Since we now use a GByteArray, we can not use stfq_p() directly. Introduce the gdb_get_float64() helper to load a float64 register. Fixes: 462474d760c ("target/m68k: use gdb_get_reg helpers") Fixes: a010bdbe719 ("extend GByteArray to read register helpers") Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20200414163853.12164-3-philmd@redhat.com> Message-Id: <20200430190122.4592-3-alex.bennee@linaro.org>
2020-04-15gdbstub: Introduce gdb_get_float32() to get 32-bit float registersPhilippe Mathieu-Daudé1-0/+9
Since we now use a GByteArray, we can not use stfl_p() directly. Introduce the gdb_get_float32() helper to load a float32 register. Fixes: a010bdbe719 ("extend GByteArray to read register helpers") Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20200414163853.12164-2-philmd@redhat.com> Message-Id: <20200414200631.12799-14-alex.bennee@linaro.org>
2020-04-15gdbstub: Do not use memset() on GByteArrayPhilippe Mathieu-Daudé1-0/+9
Introduce gdb_get_zeroes() to fill a GByteArray with zeroes. Fixes: a010bdbe719 ("extend GByteArray to read register helpers") Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20200414102427.7459-1-philmd@redhat.com> [AJB: used slightly more gliby set_size approach] Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20200414200631.12799-13-alex.bennee@linaro.org>
2020-03-17gdbstub: extend GByteArray to read register helpersAlex Bennée1-18/+41
Instead of passing a pointer to memory now just extend the GByteArray to all the read register helpers. They can then safely append their data through the normal way. We don't bother with this abstraction for write registers as we have already ensured the buffer being copied from is the correct size. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Acked-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Damien Hedde <damien.hedde@greensocs.com> Message-Id: <20200316172155.971-15-alex.bennee@linaro.org>
2020-03-17gdbstub: add helper for 128 bit registersAlex Bennée1-0/+13
Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20200316172155.971-11-alex.bennee@linaro.org>
2018-05-25gdbstub: Clarify what gdb_handlesig() is doingPeter Maydell1-0/+15
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 Frederic1-0/+2
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 Bennée1-9/+0
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 Baldwin1-1/+0
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 Bonzini1-0/+2
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-09-07gdbstub: Implement gdb_do_syscallv()Peter Maydell1-0/+27
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 Crosthwaite1-1/+1
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 Alrae1-6/+0
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 Ionescu1-0/+6
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 Färber1-0/+8
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 Färber1-0/+37
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 Liguori1-1/+1
* 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 Färber1-1/+1
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-23gdbstub: Change gdb_handlesig() argument to CPUStateAndreas Färber1-1/+1
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 Färber1-1/+1
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>
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