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62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
/*
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* Generic address space related information.
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*
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* Copyright (C) 2007 Bahadir Balban
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*/
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#ifndef __SPACE_H__
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#define __SPACE_H__
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/* The flags not embedded in the name behave as expected. E.g USR_RW is also */
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#define MAP_USR_RW_FLAGS 0 /* CB as one would expect */
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#define MAP_USR_RO_FLAGS 1 /* CB as one would expect */
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#define MAP_SVC_RW_FLAGS 2 /* CB as one would expect */
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#define MAP_USR_IO_FLAGS 3 /* Non-CB, RW TODO: How about RO one? */
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#define MAP_SVC_IO_FLAGS 4 /* Non-CB, RW */
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/* Some default aliases */
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#define MAP_USR_DEFAULT_FLAGS MAP_USR_RW_FLAGS
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#define MAP_SVC_DEFAULT_FLAGS MAP_SVC_RW_FLAGS
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#define MAP_IO_DEFAULT_FLAGS MAP_SVC_IO_FLAGS
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#if defined (__KERNEL__)
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#include <l4/lib/spinlock.h>
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#include <l4/lib/list.h>
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#include <l4/lib/mutex.h>
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#include <l4/lib/idpool.h>
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#include <l4/generic/capability.h>
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#include INC_SUBARCH(mm.h)
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/* A simple page table with a reference count */
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struct address_space {
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l4id_t spid;
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struct link list;
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struct mutex lock;
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pgd_table_t *pgd;
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/* Capabilities shared by threads in same space */
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struct cap_list cap_list;
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int ktcb_refs;
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};
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struct address_space_list {
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struct link list;
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struct mutex lock;
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int count;
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};
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struct address_space *address_space_create(struct address_space *orig);
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void address_space_delete(struct address_space *space);
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void address_space_attach(struct ktcb *tcb, struct address_space *space);
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struct address_space *address_space_find(l4id_t spid);
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void address_space_add(struct address_space *space);
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void address_space_remove(struct address_space *space);
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void init_address_space_list(struct address_space_list *space_list);
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int check_access(unsigned long vaddr, unsigned long size,
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unsigned int flags, int page_in);
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int check_access_task(unsigned long vaddr, unsigned long size,
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unsigned int flags, int page_in, struct ktcb *task);
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#endif
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#endif /* __SPACE_H__ */
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