qemu/target/arm/cpu-param.h
Richard Henderson 0e0c030c68 linux-user/aarch64: Implement PR_TAGGED_ADDR_ENABLE
This is the prctl bit that controls whether syscalls accept tagged
addresses.  See Documentation/arm64/tagged-address-abi.rst in the
linux kernel.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210212184902.1251044-21-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-02-16 13:06:16 +00:00

38 lines
785 B
C

/*
* ARM cpu parameters for qemu.
*
* Copyright (c) 2003 Fabrice Bellard
* SPDX-License-Identifier: LGPL-2.0+
*/
#ifndef ARM_CPU_PARAM_H
#define ARM_CPU_PARAM_H 1
#ifdef TARGET_AARCH64
# define TARGET_LONG_BITS 64
# define TARGET_PHYS_ADDR_SPACE_BITS 48
# define TARGET_VIRT_ADDR_SPACE_BITS 48
#else
# define TARGET_LONG_BITS 32
# define TARGET_PHYS_ADDR_SPACE_BITS 40
# define TARGET_VIRT_ADDR_SPACE_BITS 32
#endif
#ifdef CONFIG_USER_ONLY
#define TARGET_PAGE_BITS 12
# ifdef TARGET_AARCH64
# define TARGET_TAGGED_ADDRESSES
# endif
#else
/*
* ARMv7 and later CPUs have 4K pages minimum, but ARMv5 and v6
* have to support 1K tiny pages.
*/
# define TARGET_PAGE_BITS_VARY
# define TARGET_PAGE_BITS_MIN 10
#endif
#define NB_MMU_MODES 15
#endif