xemu/target/arm/cpu-param.h

/*
 * ARM cpu parameters for qemu.
 *
 * Copyright (c) 2003 Fabrice Bellard
 * SPDX-License-Identifier: LGPL-2.0-or-later
 */

#ifndef ARM_CPU_PARAM_H
#define ARM_CPU_PARAM_H

#ifdef TARGET_AARCH64
# define TARGET_PHYS_ADDR_SPACE_BITS  52
# define TARGET_VIRT_ADDR_SPACE_BITS  52
#else
# define TARGET_PHYS_ADDR_SPACE_BITS  40
# define TARGET_VIRT_ADDR_SPACE_BITS  32
#endif

#ifdef CONFIG_USER_ONLY
# if defined(TARGET_AARCH64) && defined(CONFIG_LINUX)
/* Allow user-only to vary page size from 4k */
#  define TARGET_PAGE_BITS_VARY
# else
#  define TARGET_PAGE_BITS 12
# endif
#else /* !CONFIG_USER_ONLY */
/*
 * 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_LEGACY 10
#endif /* !CONFIG_USER_ONLY */

/*
 * ARM-specific extra insn start words:
 * 1: Conditional execution bits
 * 2: Partial exception syndrome for data aborts
 */
#define TARGET_INSN_START_EXTRA_WORDS 2

#endif