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/*
* Alpha cpu parameters for qemu.
*
* Copyright (c) 2007 Jocelyn Mayer
* SPDX-License-Identifier: LGPL-2.0+
*/
#ifndef ALPHA_CPU_PARAM_H
#define ALPHA_CPU_PARAM_H 1
#define TARGET_LONG_BITS 64
#define TARGET_PAGE_BITS 13
#ifdef CONFIG_USER_ONLY
/*
* ??? The kernel likes to give addresses in high memory. If the host has
* more virtual address space than the guest, this can lead to impossible
* allocations. Honor the long-standing assumption that only kernel addrs
* are negative, but otherwise allow allocations anywhere. This could lead
* to tricky emulation problems for programs doing tagged addressing, but
* that's far fewer than encounter the impossible allocation problem.
*/
#define TARGET_PHYS_ADDR_SPACE_BITS 63
#define TARGET_VIRT_ADDR_SPACE_BITS 63
#else
/* ??? EV4 has 34 phys addr bits, EV5 has 40, EV6 has 44. */
#define TARGET_PHYS_ADDR_SPACE_BITS 44
#define TARGET_VIRT_ADDR_SPACE_BITS (30 + TARGET_PAGE_BITS)
#endif
#define NB_MMU_MODES 3
#endif
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