For the single-binary, we want to be able to retrieve at runtime the
current target among the different ones available.
A consequence is that we can't rely on existing target_info() definition
since it will create a conflict once more than one target is available.
To solve this, we add TargetInfo in QOM, with this hierarchy.
We define one class "target-info-X" per target, that inherits from
abstract class "target-info". Using concrete vs abstract class ensure we
can easily filter "target-info-X" from all QOM types.
Associated TargetInfo is directly set through class initialization,
without relying on any instance.
For user mode, we simply define target_info() like it was done
previously. In this patch, we keep the same definition for system-mode
also, and it will be replaced in next commits.
We will introduce detection of target from QOM, so we need to make sure
those types are registered early.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Link: https://lore.kernel.org/qemu-devel/20260514172303.1484273-4-pierrick.bouvier@oss.qualcomm.com
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@oss.qualcomm.com>
The "exec/target_long.h" header is indirectly included, pulled
via "cpu.h" -> "exec/cpu-defs.h". Include it explicitly otherwise
we'd get when removing the latter:
../target-info-stub.c:39:23: error: use of undeclared identifier 'TARGET_PAGE_BITS'
39 | .page_bits_init = TARGET_PAGE_BITS,
| ^
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20260313062055.2188-6-philmd@linaro.org>
Binaries can register a QOM type to filter their machines
by filling their TargetInfo::machine_typename field.
This can be used by example by main() -> machine_help_func()
to filter the machines list.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
