95e97463d2
This patch adds user_access() which can be used to gracefully handle
page faults that may happen when accessing user memory. It is used
by arch_cpu_user{memcpy, memset, strlcpy}() to allow using optimized
functions from the standard library.
Currently only x64 uses this, but nothing really is arch specific here.
Signed-off-by: Paweł Dziepak <pdziepak@quarnos.org>
49 lines
1.2 KiB
C
49 lines
1.2 KiB
C
/*
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* Copyright 2002-2005, Axel Dörfler, axeld@pinc-software.de.
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* Distributed under the terms of the MIT License.
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*
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* Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
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* Distributed under the terms of the NewOS License.
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*/
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#ifndef _KERNEL_ARCH_CPU_H
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#define _KERNEL_ARCH_CPU_H
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#include <OS.h>
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#define PAGE_ALIGN(x) (((x) + (B_PAGE_SIZE - 1)) & ~(B_PAGE_SIZE - 1))
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struct kernel_args;
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#ifdef __cplusplus
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extern "C" {
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#endif
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status_t arch_cpu_preboot_init_percpu(struct kernel_args *args, int curr_cpu);
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status_t arch_cpu_init(struct kernel_args *args);
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status_t arch_cpu_init_percpu(struct kernel_args *args, int curr_cpu);
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status_t arch_cpu_init_post_vm(struct kernel_args *args);
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status_t arch_cpu_init_post_modules(struct kernel_args *args);
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status_t arch_cpu_shutdown(bool reboot);
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void arch_cpu_invalidate_TLB_range(addr_t start, addr_t end);
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void arch_cpu_invalidate_TLB_list(addr_t pages[], int num_pages);
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void arch_cpu_user_TLB_invalidate(void);
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void arch_cpu_global_TLB_invalidate(void);
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void arch_cpu_sync_icache(void *address, size_t length);
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#ifdef __cplusplus
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}
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#endif
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#include <arch_cpu.h>
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#define CACHE_LINE_ALIGN __attribute__((aligned(CACHE_LINE_SIZE)))
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#endif /* _KERNEL_ARCH_CPU_H */
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