44 lines
871 B
C
44 lines
871 B
C
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Author: Huacai Chen <chenhuacai@loongson.cn>
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* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
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*/
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#ifndef __ASSEMBLY__
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#include <asm/asm.h>
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#include <asm/page.h>
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#include <asm/vdso.h>
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struct vdso_pcpu_data {
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u32 node;
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} ____cacheline_aligned_in_smp;
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struct loongarch_vdso_data {
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struct vdso_pcpu_data pdata[NR_CPUS];
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struct vdso_data data[CS_BASES]; /* Arch-independent data */
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};
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#define VDSO_DATA_SIZE PAGE_ALIGN(sizeof(struct loongarch_vdso_data))
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static inline unsigned long get_vdso_base(void)
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{
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unsigned long addr;
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__asm__(
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" la.pcrel %0, _start\n"
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: "=r" (addr)
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:
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:);
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return addr;
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}
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static inline const struct vdso_data *get_vdso_data(void)
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{
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return (const struct vdso_data *)(get_vdso_base()
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- VDSO_DATA_SIZE + SMP_CACHE_BYTES * NR_CPUS);
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}
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#endif /* __ASSEMBLY__ */
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