qemu/target/alpha/cpu-param.h
Richard Henderson 74433bf083 tcg: Split out target/arch/cpu-param.h
For all targets, into this new file move TARGET_LONG_BITS,
TARGET_PAGE_BITS, TARGET_PHYS_ADDR_SPACE_BITS,
TARGET_VIRT_ADDR_SPACE_BITS, and NB_MMU_MODES.

Include this new file from exec/cpu-defs.h.

This now removes the somewhat odd requirement that target/arch/cpu.h
defines TARGET_LONG_BITS before including exec/cpu-defs.h, so push the
bulk of the includes within target/arch/cpu.h to the top.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-06-10 07:03:34 -07:00

32 lines
992 B
C

/*
* 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