68 lines
1.7 KiB
C
68 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#ifndef _VDSO_DATAPAGE_H
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#define _VDSO_DATAPAGE_H
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#ifdef __KERNEL__
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/*
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* Copyright (C) 2002 Peter Bergner <bergner@vnet.ibm.com>, IBM
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* Copyright (C) 2005 Benjamin Herrenschmidy <benh@kernel.crashing.org>,
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* IBM Corp.
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*/
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#ifndef __ASSEMBLY__
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#include <linux/unistd.h>
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#include <linux/time.h>
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#include <vdso/datapage.h>
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#define SYSCALL_MAP_SIZE ((NR_syscalls + 31) / 32)
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#ifdef CONFIG_PPC64
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struct vdso_arch_data {
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__u64 tb_ticks_per_sec; /* Timebase tics / sec */
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__u32 dcache_block_size; /* L1 d-cache block size */
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__u32 icache_block_size; /* L1 i-cache block size */
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__u32 dcache_log_block_size; /* L1 d-cache log block size */
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__u32 icache_log_block_size; /* L1 i-cache log block size */
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__u32 syscall_map[SYSCALL_MAP_SIZE]; /* Map of syscalls */
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__u32 compat_syscall_map[SYSCALL_MAP_SIZE]; /* Map of compat syscalls */
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struct vdso_rng_data rng_data;
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struct vdso_data data[CS_BASES] __aligned(1 << CONFIG_PAGE_SHIFT);
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};
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#else /* CONFIG_PPC64 */
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struct vdso_arch_data {
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__u64 tb_ticks_per_sec; /* Timebase tics / sec */
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__u32 syscall_map[SYSCALL_MAP_SIZE]; /* Map of syscalls */
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__u32 compat_syscall_map[0]; /* No compat syscalls on PPC32 */
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struct vdso_rng_data rng_data;
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struct vdso_data data[CS_BASES] __aligned(1 << CONFIG_PAGE_SHIFT);
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};
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#endif /* CONFIG_PPC64 */
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extern struct vdso_arch_data *vdso_data;
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#else /* __ASSEMBLY__ */
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.macro get_datapage ptr offset=0
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bcl 20, 31, .+4
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999:
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mflr \ptr
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addis \ptr, \ptr, (_vdso_datapage - 999b + \offset)@ha
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addi \ptr, \ptr, (_vdso_datapage - 999b + \offset)@l
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.endm
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#include <asm/asm-offsets.h>
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#include <asm/page.h>
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#endif /* __ASSEMBLY__ */
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#endif /* __KERNEL__ */
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#endif /* _SYSTEMCFG_H */
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