Yaya48
cf256aa081
Upstream: https://gitlab.com/qemu-project/qemu.git Upstream-Commit: d2e570cc0f97b936902a5b1b86b73c0f5998b475
63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
/*
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* ARM AArch64 VM parameters definitions for bsd-user.
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*
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* Copyright (c) 2015 Stacey D. Son
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef TARGET_ARCH_VMPARAM_H
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#define TARGET_ARCH_VMPARAM_H
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#include "cpu.h"
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/**
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* FreeBSD/arm64 Address space layout.
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*
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* ARMv8 implements up to a 48 bit virtual address space. The address space is
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* split into 2 regions at each end of the 64 bit address space, with an
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* out of range "hole" in the middle.
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*
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* We limit the size of the two spaces to 39 bits each.
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*
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* Upper region: 0xffffffffffffffff
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* 0xffffff8000000000
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*
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* Hole: 0xffffff7fffffffff
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* 0x0000008000000000
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*
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* Lower region: 0x0000007fffffffff
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* 0x0000000000000000
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*
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* The upper region for the kernel, and the lower region for userland.
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*/
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/* compare to sys/arm64/include/vmparam.h */
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#define TARGET_MAXTSIZ (1 * GiB) /* max text size */
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#define TARGET_DFLDSIZ (128 * MiB) /* initial data size limit */
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#define TARGET_MAXDSIZ (1 * GiB) /* max data size */
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#define TARGET_DFLSSIZ (128 * MiB) /* initial stack size limit */
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#define TARGET_MAXSSIZ (1 * GiB) /* max stack size */
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#define TARGET_SGROWSIZ (128 * KiB) /* amount to grow stack */
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/* KERNBASE - 512 MB */
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#define TARGET_VM_MAXUSER_ADDRESS (0x00007fffff000000ULL - (512 * MiB))
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#define TARGET_USRSTACK TARGET_VM_MAXUSER_ADDRESS
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static inline abi_ulong get_sp_from_cpustate(CPUARMState *state)
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{
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return state->xregs[31]; /* sp */
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}
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static inline void set_second_rval(CPUARMState *state, abi_ulong retval2)
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{
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state->xregs[1] = retval2; /* XXX not really used on 64-bit arch */
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}
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static inline abi_ulong get_second_rval(CPUARMState *state)
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{
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return state->xregs[1];
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}
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#endif /* TARGET_ARCH_VMPARAM_H */
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