/* * 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
