49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
/**
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* \file memory.h
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* License details are found in the file LICENSE.
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* \brief
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* Convert virtual address from/to physical address.
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* \author Taku Shimosawa <shimosawa@is.s.u-tokyo.ac.jp> \par
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* Copyright (C) 2011 - 2012 Taku Shimosawa
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*/
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/*
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* HISTORY
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*/
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#ifndef __HEADER_GENERIC_MEMORY_H
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#define __HEADER_GENERIC_MEMORY_H
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#include <arch-memory.h>
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#ifndef KERNEL_PHYS_OFFSET
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#define KERNEL_PHYS_OFFSET 0
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static unsigned long virt_to_phys(void *v)
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{
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return (unsigned long)v - KERNEL_PHYS_OFFSET;
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}
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static void *phys_to_virt(unsigned long p)
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{
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return (void *)(p + KERNEL_PHYS_OFFSET);
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}
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#endif
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struct process_vm;
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unsigned long virt_to_phys(void *v);
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void *phys_to_virt(unsigned long p);
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int copy_from_user(void *dst, const void *src, size_t siz);
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int strlen_user(const char *s);
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int strcpy_from_user(char *dst, const char *src);
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long getlong_user(const long *p);
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int getint_user(const int *p);
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int read_process_vm(struct process_vm *vm, void *kdst, const void *usrc, size_t siz);
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int copy_to_user(void *dst, const void *src, size_t siz);
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int setlong_user(long *dst, long data);
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int setint_user(int *dst, int data);
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int write_process_vm(struct process_vm *vm, void *udst, const void *ksrc, size_t siz);
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int patch_process_vm(struct process_vm *vm, void *udst, const void *ksrc, size_t siz);
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#endif
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