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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>
46 lines
1.2 KiB
C
46 lines
1.2 KiB
C
/*
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* QEMU target info stubs (target specific)
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*
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* Copyright (c) Linaro
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "qemu/osdep.h"
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#include "qemu/target-info.h"
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#include "qemu/target-info-impl.h"
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#include "qemu/target-info-init.h"
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#include "hw/core/boards.h"
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#include "cpu.h"
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#include "exec/cpu-defs.h"
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#include "exec/page-vary.h"
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/* Validate correct placement of CPUArchState. */
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QEMU_BUILD_BUG_ON(offsetof(ArchCPU, parent_obj) != 0);
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QEMU_BUILD_BUG_ON(offsetof(ArchCPU, env) != sizeof(CPUState));
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/* Validate target page size, if invariant. */
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#ifndef TARGET_PAGE_BITS_VARY
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QEMU_BUILD_BUG_ON(TARGET_PAGE_BITS < TARGET_PAGE_BITS_MIN);
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#endif
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static const TargetInfo target_info_stub = {
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.target_name = TARGET_NAME,
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.target_arch = glue(SYS_EMU_TARGET_, TARGET_ARCH),
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.long_bits = TARGET_LONG_BITS,
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.cpu_type = CPU_RESOLVING_TYPE,
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.machine_typename = TYPE_MACHINE,
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.endianness = TARGET_BIG_ENDIAN ? ENDIAN_MODE_BIG : ENDIAN_MODE_LITTLE,
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#ifdef TARGET_PAGE_BITS_VARY
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.page_bits_vary = true,
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# ifdef TARGET_PAGE_BITS_LEGACY
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.page_bits_init = TARGET_PAGE_BITS_LEGACY,
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# endif
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#else
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.page_bits_vary = false,
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.page_bits_init = TARGET_PAGE_BITS,
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#endif
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};
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target_info_init(target_info_stub)
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