1541d87db2
Added function to access rval2 by accessing the x1 register. Defined ARM AArch64 ELF parameters including mmap and dynamic load addresses. Introduced extensive hardware capability definitions and macros for retrieving hardware capability (hwcap) flags. Implemented function to retrieve ARM AArch64 hardware capabilities using the `GET_FEATURE_ID` macro. Added function to retrieve extended ARM AArch64 hardware capability flags. Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Ajeet Singh <itachis@FreeBSD.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Co-authored-by: Kyle Evans <kevans@FreeBSD.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20240707191128.10509-4-itachis@FreeBSD.org> Signed-off-by: Warner Losh <imp@bsdimp.com>
75 lines
2.5 KiB
C
75 lines
2.5 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 <sson at FreeBSD>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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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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