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* exec: Rename target_words_bigendian() -> target_big_endian()Philippe Mathieu-Daudé2025-04-251-1/+1
| | | | | | | | | | | | | | | | | In commit 98ed8ecfc9d ("exec: introduce target_words_bigendian() helper") target_words_bigendian() was matching the definition it was depending on (TARGET_WORDS_BIGENDIAN). Later in commit ee3eb3a7ce7 ("Replace TARGET_WORDS_BIGENDIAN") the definition was renamed as TARGET_BIG_ENDIAN but we didn't update the helper. Do it now mechanically using: $ sed -i -e s/target_words_bigendian/target_big_endian/g \ $(git grep -wl target_words_bigendian) Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org> Message-Id: <20250417210025.68322-1-philmd@linaro.org>
* include/system: Move exec/address-spaces.h to system/address-spaces.hRichard Henderson2025-04-231-1/+1
| | | | | | | | Convert the existing includes with sed. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* include/system: Move exec/memory.h to system/memory.hRichard Henderson2025-04-231-1/+1
| | | | | | | | | | | | Convert the existing includes with sed -i ,exec/memory.h,system/memory.h,g Move the include within cpu-all.h into a !CONFIG_USER_ONLY block. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* cpus: Remove CPUClass::has_work() handlerPhilippe Mathieu-Daudé2025-03-091-6/+7
| | | | | | | | | | | | | | | All handlers have been converted to SysemuCPUOps::has_work(). Remove CPUClass::has_work along with cpu_common_has_work() and simplify cpu_has_work(), making SysemuCPUOps::has_work handler mandatory. Note, since cpu-common.c is in meson's common_ss[] source set, we must define cpu_exec_class_post_init() in cpu-target.c (which is in the specific_ss[] source set) to have CONFIG_USER_ONLY defined. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-Id: <20250125170125.32855-25-philmd@linaro.org>
* cpus: Introduce SysemuCPUOps::has_work() handlerPhilippe Mathieu-Daudé2025-03-091-0/+4
| | | | | | | | | SysemuCPUOps::has_work() is similar to CPUClass::has_work(), but only exposed on system emulation. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20250125170125.32855-4-philmd@linaro.org>
* cpus: Un-inline cpu_has_work()Philippe Mathieu-Daudé2025-03-091-0/+6
| | | | | | | | In order to expand cpu_has_work(), un-inline it. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20250125170125.32855-3-philmd@linaro.org>
* cpus: Prefer cached CpuClass over CPU_GET_CLASS() macroPhilippe Mathieu-Daudé2025-03-091-39/+22
| | | | | | | | | | CpuState caches its CPUClass since commit 6fbdff87062 ("cpu: cache CPUClass in CPUState for hot code paths"), use it. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20250122093028.52416-5-philmd@linaro.org>
* cpus: Register VMState per user / system emulationPhilippe Mathieu-Daudé2025-03-091-0/+115
| | | | | | | | | | Simplify cpu-target.c by extracting mixed vmstate code into the cpu_vmstate_register() / cpu_vmstate_unregister() helpers, implemented in cpu-user.c and cpu-system.c. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20250123234415.59850-20-philmd@linaro.org>
* cpus: Have cpu_exec_initfn() per user / system emulationPhilippe Mathieu-Daudé2025-03-061-0/+7
| | | | | | | | | Slighly simplify cpu-target.c again by extracting cpu_exec_initfn() to cpu-{system,user}.c, adding an empty stub for user emulation. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20250123234415.59850-19-philmd@linaro.org>
* cpus: Have cpu_class_init_props() per user / system emulationPhilippe Mathieu-Daudé2025-03-061-0/+40
| | | | | | | | | | Rather than maintaining a mix of system / user code for CPU class properties, move system properties to cpu-system.c and user ones to the new cpu-user.c unit. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20250123234415.59850-18-philmd@linaro.org>
* physmem: teach cpu_memory_rw_debug() to write to more memory regionsDavid Hildenbrand2025-02-121-4/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Right now, we only allow for writing to memory regions that allow direct access using memcpy etc; all other writes are simply ignored. This implies that debugging guests will not work as expected when writing to MMIO device regions. Let's extend cpu_memory_rw_debug() to write to more memory regions, including MMIO device regions. Reshuffle the condition in memory_access_is_direct() to make it easier to read and add a comment. While this change implies that debug access can now also write to MMIO devices, we now are also permit ELF image loads and similar users of cpu_memory_rw_debug() to write to MMIO devices; currently we ignore these writes. Peter assumes [1] that there's probably a class of guest images, which will start writing junk (likely zeroes) into device model registers; we previously would silently ignore any such bogus ELF sections. Likely these images are of questionable correctness and this can be ignored. If ever a problem, we could make these cases use address_space_write_rom() instead, which is left unchanged for now. This patch is based on previous work by Stefan Zabka. [1] https://lore.kernel.org/all/CAFEAcA_2CEJKFyjvbwmpt=on=GgMVamQ5hiiVt+zUr6AY3X=Xg@mail.gmail.com/ Resolves: https://gitlab.com/qemu-project/qemu/-/issues/213 Reviewed-by: Peter Xu <peterx@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Link: https://lore.kernel.org/r/20250210084648.33798-8-david@redhat.com Signed-off-by: Peter Xu <peterx@redhat.com>
* include: Rename sysemu/ -> system/Philippe Mathieu-Daudé2024-12-201-0/+144
Headers in include/sysemu/ are not only related to system *emulation*, they are also used by virtualization. Rename as system/ which is clearer. Files renamed manually then mechanical change using sed tool. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Tested-by: Lei Yang <leiyang@redhat.com> Message-Id: <20241203172445.28576-1-philmd@linaro.org>