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* meson: remove lib{system, user}_ss aliasesPierrick Bouvier2025-05-261-2/+2
| | | | | | | Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org> Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org> Link: https://lore.kernel.org/r/20250521223414.248276-7-pierrick.bouvier@linaro.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* gdbstub: Move syscalls.c out of common_ssRichard Henderson2025-04-231-2/+2
| | | | | | | | | Copy to libuser_ss and libsystem_ss. This file uses semihosting/semihost.h, which has separate implementations with and without CONFIG_USER_ONLY. Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* meson: Introduce top-level libuser_ss and libsystem_ssRichard Henderson2025-04-231-25/+9
| | | | | | | | | | | | | We already have two subdirectories for which we need to build files twice, for user vs system modes. Move this handling to the top level. This cannot be combined with user_ss or system_ss, because the formulation has not been extended to support configuration symbols. Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* meson: Drop the .fa library suffixPaolo Bonzini2024-07-031-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | The non-standard .fa library suffix breaks the link source de-duplication done by Meson so drop it. The lack of link source de-duplication causes AddressSanitizer to complain ODR violations, and makes GNU ld abort when combined with clang's LTO. Fortunately, the non-standard suffix is not necessary anymore for two reasons. First, the non-standard suffix was necessary for fork-fuzzing. Meson wraps all standard-suffixed libraries with --start-group and --end-group. This made a fork-fuzz.ld linker script wrapped as well and broke builds. Commit d2e6f9272d33 ("fuzz: remove fork-fuzzing scaffolding") dropped fork-fuzzing so we can now restore the standard suffix. Second, the libraries are not even built anymore, because it is possible to just use the object files directly via extract_all_objects(). The occurences of the suffix were detected and removed by performing a tree-wide search with 'fa' and .fa (note the quotes and dot). Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> Message-ID: <20240524-xkb-v4-4-2de564e5c859@daynix.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* meson: Pass objects and dependencies to declare_dependency()Akihiko Odaki2024-07-031-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We used to request declare_dependency() to link_whole static libraries. If a static library is a thin archive, GNU ld keeps all object files referenced by the archive open, and sometimes exceeds the open file limit. Another problem with link_whole is that suboptimal handling of nested dependencies. link_whole by itself does not propagate dependencies. In particular, gnutls, a dependency of crypto, is not propagated to its users, and we currently workaround the issue by declaring gnutls as a dependency for each crypto user. On the other hand, if you write something like libfoo = static_library('foo', 'foo.c', dependencies: gnutls) foo = declare_dependency(link_whole: libfoo) libbar = static_library('bar', 'bar.c', dependencies: foo) bar = declare_dependency(link_whole: libbar, dependencies: foo) executable('prog', sources: files('prog.c'), dependencies: [foo, bar]) hoping to propagate the gnutls dependency into bar.c, you'll see a linking failure for "prog", because the foo.c.o object file is included in libbar.a and therefore it is linked twice into "prog": once from libfoo.a and once from libbar.a. Here Meson does not see the duplication, it just asks the linker to link all of libfoo.a and libbar.a into "prog". Instead of using link_whole, extract objects included in static libraries and pass them to declare_dependency(); and then the dependencies can be added as well so that they are propagated, because object files on the linker command line are always deduplicated. This requires Meson 1.1.0 or later. Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> Message-ID: <20240524-objects-v1-1-07cbbe96166b@daynix.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* meson: remove config_targetosPaolo Bonzini2023-12-311-2/+2
| | | | | | | | | | | | | | config_targetos is now empty and can be removed; its use in sourcesets that do not involve target-specific files can be replaced with an empty dictionary. In fact, at this point *all* sourcesets that do not involve target-specific files are just glorified mutable arrays. Enforce that they never test for symbols in "when:" by computing the set of files without "strict: false". Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* gdbstub: Rename 'softmmu' -> 'system'Philippe Mathieu-Daudé2023-10-071-5/+5
| | | | | | | | | | | We have gdbstub/user.c for user emulation code, use gdbstub/system.c for system emulation part. Rename s/softmmu/system/ in meson and few comments. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-ID: <20231004090629.37473-8-philmd@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* meson: clean up static_library keyword argumentsPaolo Bonzini2023-09-291-2/+2
| | | | | | | | | | | | | | These are either built because they are dependencies of other targets, or not needed at all because they are used via extract_objects(). Mark them as "build_by_default: false"; if applicable, mark them as "fa" so that -Wl,--whole-archive does not interact with the linker script used for fuzzing. (The "fa" hack is brittle; updating to Meson 1.1 would allow using declare_dependency(objects: ...) instead). Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1044 Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* configure, meson: remove target OS symbols from config-host.makPaolo Bonzini2023-09-071-2/+2
| | | | | | | Stop applying config-host.mak to the sourcesets, since it does not have any more CONFIG_* symbols coming from the command line. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* meson: Replace softmmu_ss -> system_ssPhilippe Mathieu-Daudé2023-06-201-5/+5
| | | | | | | | | | | | | | | | We use the user_ss[] array to hold the user emulation sources, and the softmmu_ss[] array to hold the system emulation ones. Hold the latter in the 'system_ss[]' array for parity with user emulation. Mechanical change doing: $ sed -i -e s/softmmu_ss/system_ss/g $(git grep -l softmmu_ss) Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230613133347.82210-10-philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* gdbstub: Only build libgdb_user.fa / libgdb_softmmu.fa if necessaryPhilippe Mathieu-Daudé2023-04-041-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is pointless to build libgdb_user.fa in a system-only build (or libgdb_softmmu.fa in a user-only build). Besides, in some restricted build configurations, some APIs might be restricted / not available. Example in a KVM-only builds where TCG is disabled: $ ninja qemu-system-x86_64 [99/2187] Compiling C object gdbstub/libgdb_user.fa.p/user.c.o FAILED: gdbstub/libgdb_user.fa.p/user.c.o ../../gdbstub/user.c: In function ‘gdb_breakpoint_insert’: ../../gdbstub/user.c:438:19: error: implicit declaration of function ‘cpu_breakpoint_insert’; did you mean ‘gdb_breakpoint_insert’? [-Werror=implicit-function-declaration] 438 | err = cpu_breakpoint_insert(cpu, addr, BP_GDB, NULL); | ^~~~~~~~~~~~~~~~~~~~~ | gdb_breakpoint_insert ../../gdbstub/user.c:438:19: error: nested extern declaration of ‘cpu_breakpoint_insert’ [-Werror=nested-externs] ../../gdbstub/user.c: In function ‘gdb_breakpoint_remove’: ../../gdbstub/user.c:459:19: error: implicit declaration of function ‘cpu_breakpoint_remove’; did you mean ‘gdb_breakpoint_remove’? [-Werror=implicit-function-declaration] 459 | err = cpu_breakpoint_remove(cpu, addr, BP_GDB); | ^~~~~~~~~~~~~~~~~~~~~ | gdb_breakpoint_remove ../../gdbstub/user.c:459:19: error: nested extern declaration of ‘cpu_breakpoint_remove’ [-Werror=nested-externs] cc1: all warnings being treated as errors ninja: build stopped: subcommand failed. Fixes: 61b2e136db ("gdbstub: only compile gdbstub twice for whole build") Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230329161852.84992-1-philmd@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230403134920.2132362-3-alex.bennee@linaro.org>
* gdbstub: Build syscall.c onceRichard Henderson2023-03-071-2/+1
| | | | | | | | | There is no longer anything target specific. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230303025805.625589-29-richard.henderson@linaro.org>
* gdbstub: only compile gdbstub twice for whole buildAlex Bennée2023-03-071-4/+26
| | | | | | | | | | | Now we have removed any target specific bits from the core gdbstub code we only need to build it twice. We have to jump a few meson hoops to manually define the CONFIG_USER_ONLY symbol but it seems to work. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230302190846.2593720-23-alex.bennee@linaro.org> Message-Id: <20230303025805.625589-23-richard.henderson@linaro.org>
* gdbstub: move syscall handling to new fileAlex Bennée2023-03-071-0/+4
| | | | | | | | | | | | | | | | 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>
* gdbstub: move chunks of user code into own filesAlex Bennée2023-03-071-0/+3
| | | | | | | | | | | | | | | | 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>
* gdbstub: move breakpoint logic to accel opsAlex Bennée2022-10-061-0/+8
| | | | | | | | | | | | As HW virtualization requires specific support to handle breakpoints lets push out special casing out of the core gdbstub code and into AccelOpsClass. This will make it easier to add other accelerator support and reduces some of the stub shenanigans. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Mads Ynddal <mads@ynddal.dk> Message-Id: <20220929114231.583801-45-alex.bennee@linaro.org>
* gdbstub: move into its own sub directoryAlex Bennée2022-10-061-0/+1
This is in preparation of future refactoring as well as cleaning up the source tree. Aside from the minor tweaks to meson and trace.h this is pure code motion. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20220929114231.583801-43-alex.bennee@linaro.org>