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74433bf083
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>
32 lines
992 B
C
32 lines
992 B
C
/*
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* Alpha cpu parameters for qemu.
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*
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* Copyright (c) 2007 Jocelyn Mayer
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* SPDX-License-Identifier: LGPL-2.0+
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*/
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#ifndef ALPHA_CPU_PARAM_H
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#define ALPHA_CPU_PARAM_H 1
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#define TARGET_LONG_BITS 64
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#define TARGET_PAGE_BITS 13
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#ifdef CONFIG_USER_ONLY
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/*
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* ??? The kernel likes to give addresses in high memory. If the host has
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* more virtual address space than the guest, this can lead to impossible
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* allocations. Honor the long-standing assumption that only kernel addrs
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* are negative, but otherwise allow allocations anywhere. This could lead
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* to tricky emulation problems for programs doing tagged addressing, but
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* that's far fewer than encounter the impossible allocation problem.
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*/
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#define TARGET_PHYS_ADDR_SPACE_BITS 63
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#define TARGET_VIRT_ADDR_SPACE_BITS 63
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#else
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/* ??? EV4 has 34 phys addr bits, EV5 has 40, EV6 has 44. */
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#define TARGET_PHYS_ADDR_SPACE_BITS 44
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#define TARGET_VIRT_ADDR_SPACE_BITS (30 + TARGET_PAGE_BITS)
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#endif
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#define NB_MMU_MODES 3
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#endif
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