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1 | /* |
1 | /* |
2 | * Copyright (c) 2001-2004 Jakub Jermar |
2 | * Copyright (c) 2001-2004 Jakub Jermar |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup genericmm |
29 | /** @addtogroup genericmm |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #ifndef KERN_AS_H_ |
35 | #ifndef KERN_AS_H_ |
36 | #define KERN_AS_H_ |
36 | #define KERN_AS_H_ |
37 | 37 | ||
38 | /** Address space area flags. */ |
38 | /** Address space area flags. */ |
39 | #define AS_AREA_READ 1 |
39 | #define AS_AREA_READ 1 |
40 | #define AS_AREA_WRITE 2 |
40 | #define AS_AREA_WRITE 2 |
41 | #define AS_AREA_EXEC 4 |
41 | #define AS_AREA_EXEC 4 |
42 | #define AS_AREA_CACHEABLE 8 |
42 | #define AS_AREA_CACHEABLE 8 |
43 | 43 | ||
44 | #ifdef KERNEL |
44 | #ifdef KERNEL |
45 | 45 | ||
46 | #include <arch/mm/page.h> |
46 | #include <arch/mm/page.h> |
47 | #include <arch/mm/as.h> |
47 | #include <arch/mm/as.h> |
48 | #include <arch/mm/asid.h> |
48 | #include <arch/mm/asid.h> |
49 | #include <arch/types.h> |
49 | #include <arch/types.h> |
50 | #include <synch/spinlock.h> |
50 | #include <synch/spinlock.h> |
51 | #include <synch/mutex.h> |
51 | #include <synch/mutex.h> |
52 | #include <adt/list.h> |
52 | #include <adt/list.h> |
53 | #include <adt/btree.h> |
53 | #include <adt/btree.h> |
54 | #include <lib/elf.h> |
54 | #include <lib/elf.h> |
55 | 55 | ||
56 | #ifdef __OBJC__ |
56 | #ifdef __OBJC__ |
57 | #include <lib/objc.h> |
57 | #include <lib/objc.h> |
58 | #endif |
58 | #endif |
59 | 59 | ||
60 | /** |
60 | /** |
61 | * Defined to be true if user address space and kernel address space shadow each |
61 | * Defined to be true if user address space and kernel address space shadow each |
62 | * other. |
62 | * other. |
63 | */ |
63 | */ |
64 | #define KERNEL_ADDRESS_SPACE_SHADOWED KERNEL_ADDRESS_SPACE_SHADOWED_ARCH |
64 | #define KERNEL_ADDRESS_SPACE_SHADOWED KERNEL_ADDRESS_SPACE_SHADOWED_ARCH |
65 | 65 | ||
66 | #define KERNEL_ADDRESS_SPACE_START KERNEL_ADDRESS_SPACE_START_ARCH |
66 | #define KERNEL_ADDRESS_SPACE_START KERNEL_ADDRESS_SPACE_START_ARCH |
67 | #define KERNEL_ADDRESS_SPACE_END KERNEL_ADDRESS_SPACE_END_ARCH |
67 | #define KERNEL_ADDRESS_SPACE_END KERNEL_ADDRESS_SPACE_END_ARCH |
68 | #define USER_ADDRESS_SPACE_START USER_ADDRESS_SPACE_START_ARCH |
68 | #define USER_ADDRESS_SPACE_START USER_ADDRESS_SPACE_START_ARCH |
69 | #define USER_ADDRESS_SPACE_END USER_ADDRESS_SPACE_END_ARCH |
69 | #define USER_ADDRESS_SPACE_END USER_ADDRESS_SPACE_END_ARCH |
70 | 70 | ||
71 | #define USTACK_ADDRESS USTACK_ADDRESS_ARCH |
71 | #define USTACK_ADDRESS USTACK_ADDRESS_ARCH |
72 | 72 | ||
73 | /** Kernel address space. */ |
73 | /** Kernel address space. */ |
74 | #define FLAG_AS_KERNEL (1 << 0) |
74 | #define FLAG_AS_KERNEL (1 << 0) |
75 | 75 | ||
76 | /* Address space area attributes. */ |
76 | /* Address space area attributes. */ |
77 | #define AS_AREA_ATTR_NONE 0 |
77 | #define AS_AREA_ATTR_NONE 0 |
78 | #define AS_AREA_ATTR_PARTIAL 1 /**< Not fully initialized area. */ |
78 | #define AS_AREA_ATTR_PARTIAL 1 /**< Not fully initialized area. */ |
79 | 79 | ||
80 | /** The page fault was not resolved by as_page_fault(). */ |
80 | /** The page fault was not resolved by as_page_fault(). */ |
81 | #define AS_PF_FAULT 0 |
81 | #define AS_PF_FAULT 0 |
82 | /** The page fault was resolved by as_page_fault(). */ |
82 | /** The page fault was resolved by as_page_fault(). */ |
83 | #define AS_PF_OK 1 |
83 | #define AS_PF_OK 1 |
84 | /** The page fault was caused by memcpy_from_uspace() or memcpy_to_uspace(). */ |
84 | /** The page fault was caused by memcpy_from_uspace() or memcpy_to_uspace(). */ |
85 | #define AS_PF_DEFER 2 |
85 | #define AS_PF_DEFER 2 |
86 | 86 | ||
87 | #ifdef __OBJC__ |
87 | #ifdef __OBJC__ |
88 | @interface as_t : base_t { |
88 | @interface as_t : base_t { |
89 | @public |
89 | @public |
90 | /** Protected by asidlock. */ |
90 | /** Protected by asidlock. */ |
91 | link_t inactive_as_with_asid_link; |
91 | link_t inactive_as_with_asid_link; |
92 | /** |
92 | /** |
93 | * Number of processors on wich is this address space active. |
93 | * Number of processors on wich is this address space active. |
94 | * Protected by asidlock. |
94 | * Protected by asidlock. |
95 | */ |
95 | */ |
96 | count_t cpu_refcount; |
96 | count_t cpu_refcount; |
97 | /** |
97 | /** |
98 | * Address space identifier. |
98 | * Address space identifier. |
99 | * Constant on architectures that do not support ASIDs. |
99 | * Constant on architectures that do not support ASIDs. |
100 | * Protected by asidlock. |
100 | * Protected by asidlock. |
101 | */ |
101 | */ |
102 | asid_t asid; |
102 | asid_t asid; |
103 | 103 | ||
104 | /** Number of references (i.e tasks that reference this as). */ |
104 | /** Number of references (i.e tasks that reference this as). */ |
105 | atomic_t refcount; |
105 | atomic_t refcount; |
106 | 106 | ||
107 | mutex_t lock; |
107 | mutex_t lock; |
108 | 108 | ||
109 | /** B+tree of address space areas. */ |
109 | /** B+tree of address space areas. */ |
110 | btree_t as_area_btree; |
110 | btree_t as_area_btree; |
111 | 111 | ||
112 | /** Non-generic content. */ |
112 | /** Non-generic content. */ |
113 | as_genarch_t genarch; |
113 | as_genarch_t genarch; |
114 | 114 | ||
115 | /** Architecture specific content. */ |
115 | /** Architecture specific content. */ |
116 | as_arch_t arch; |
116 | as_arch_t arch; |
117 | } |
117 | } |
118 | 118 | ||
119 | + (pte_t *) page_table_create: (int) flags; |
119 | + (pte_t *) page_table_create: (int) flags; |
120 | + (void) page_table_destroy: (pte_t *) page_table; |
120 | + (void) page_table_destroy: (pte_t *) page_table; |
121 | - (void) page_table_lock: (bool) _lock; |
121 | - (void) page_table_lock: (bool) _lock; |
122 | - (void) page_table_unlock: (bool) unlock; |
122 | - (void) page_table_unlock: (bool) unlock; |
123 | 123 | ||
124 | @end |
124 | @end |
125 | 125 | ||
126 | #else |
126 | #else |
127 | 127 | ||
128 | /** Address space structure. |
128 | /** Address space structure. |
129 | * |
129 | * |
130 | * as_t contains the list of as_areas of userspace accessible |
130 | * as_t contains the list of as_areas of userspace accessible |
131 | * pages for one or more tasks. Ranges of kernel memory pages are not |
131 | * pages for one or more tasks. Ranges of kernel memory pages are not |
132 | * supposed to figure in the list as they are shared by all tasks and |
132 | * supposed to figure in the list as they are shared by all tasks and |
133 | * set up during system initialization. |
133 | * set up during system initialization. |
134 | */ |
134 | */ |
135 | typedef struct as { |
135 | typedef struct as { |
136 | /** Protected by asidlock. */ |
136 | /** Protected by asidlock. */ |
137 | link_t inactive_as_with_asid_link; |
137 | link_t inactive_as_with_asid_link; |
138 | /** |
138 | /** |
139 | * Number of processors on wich is this address space active. |
139 | * Number of processors on wich is this address space active. |
140 | * Protected by asidlock. |
140 | * Protected by asidlock. |
141 | */ |
141 | */ |
142 | count_t cpu_refcount; |
142 | count_t cpu_refcount; |
143 | /** |
143 | /** |
144 | * Address space identifier. |
144 | * Address space identifier. |
145 | * Constant on architectures that do not support ASIDs. |
145 | * Constant on architectures that do not support ASIDs. |
146 | * Protected by asidlock. |
146 | * Protected by asidlock. |
147 | */ |
147 | */ |
148 | asid_t asid; |
148 | asid_t asid; |
149 | 149 | ||
150 | /** Number of references (i.e tasks that reference this as). */ |
150 | /** Number of references (i.e tasks that reference this as). */ |
151 | atomic_t refcount; |
151 | atomic_t refcount; |
152 | 152 | ||
153 | mutex_t lock; |
153 | mutex_t lock; |
154 | 154 | ||
155 | /** B+tree of address space areas. */ |
155 | /** B+tree of address space areas. */ |
156 | btree_t as_area_btree; |
156 | btree_t as_area_btree; |
157 | 157 | ||
158 | /** Non-generic content. */ |
158 | /** Non-generic content. */ |
159 | as_genarch_t genarch; |
159 | as_genarch_t genarch; |
160 | 160 | ||
161 | /** Architecture specific content. */ |
161 | /** Architecture specific content. */ |
162 | as_arch_t arch; |
162 | as_arch_t arch; |
163 | } as_t; |
163 | } as_t; |
164 | 164 | ||
165 | typedef struct { |
165 | typedef struct { |
166 | pte_t *(* page_table_create)(int flags); |
166 | pte_t *(* page_table_create)(int flags); |
167 | void (* page_table_destroy)(pte_t *page_table); |
167 | void (* page_table_destroy)(pte_t *page_table); |
168 | void (* page_table_lock)(as_t *as, bool lock); |
168 | void (* page_table_lock)(as_t *as, bool lock); |
169 | void (* page_table_unlock)(as_t *as, bool unlock); |
169 | void (* page_table_unlock)(as_t *as, bool unlock); |
170 | } as_operations_t; |
170 | } as_operations_t; |
171 | #endif |
171 | #endif |
172 | 172 | ||
173 | /** |
173 | /** |
174 | * This structure contains information associated with the shared address space |
174 | * This structure contains information associated with the shared address space |
175 | * area. |
175 | * area. |
176 | */ |
176 | */ |
177 | typedef struct { |
177 | typedef struct { |
178 | /** This lock must be acquired only when the as_area lock is held. */ |
178 | /** This lock must be acquired only when the as_area lock is held. */ |
179 | mutex_t lock; |
179 | mutex_t lock; |
180 | /** This structure can be deallocated if refcount drops to 0. */ |
180 | /** This structure can be deallocated if refcount drops to 0. */ |
181 | count_t refcount; |
181 | count_t refcount; |
182 | /** |
182 | /** |
183 | * B+tree containing complete map of anonymous pages of the shared area. |
183 | * B+tree containing complete map of anonymous pages of the shared area. |
184 | */ |
184 | */ |
185 | btree_t pagemap; |
185 | btree_t pagemap; |
186 | } share_info_t; |
186 | } share_info_t; |
187 | 187 | ||
188 | /** Page fault access type. */ |
188 | /** Page fault access type. */ |
189 | typedef enum { |
189 | typedef enum { |
190 | PF_ACCESS_READ, |
190 | PF_ACCESS_READ, |
191 | PF_ACCESS_WRITE, |
191 | PF_ACCESS_WRITE, |
192 | PF_ACCESS_EXEC |
192 | PF_ACCESS_EXEC |
193 | } pf_access_t; |
193 | } pf_access_t; |
194 | 194 | ||
195 | struct mem_backend; |
195 | struct mem_backend; |
196 | 196 | ||
197 | /** Backend data stored in address space area. */ |
197 | /** Backend data stored in address space area. */ |
198 | typedef union mem_backend_data { |
198 | typedef union mem_backend_data { |
199 | struct { /**< elf_backend members */ |
199 | struct { /**< elf_backend members */ |
200 | elf_header_t *elf; |
200 | elf_header_t *elf; |
201 | elf_segment_header_t *segment; |
201 | elf_segment_header_t *segment; |
202 | }; |
202 | }; |
203 | struct { /**< phys_backend members */ |
203 | struct { /**< phys_backend members */ |
204 | uintptr_t base; |
204 | uintptr_t base; |
205 | count_t frames; |
205 | count_t frames; |
206 | }; |
206 | }; |
207 | } mem_backend_data_t; |
207 | } mem_backend_data_t; |
208 | 208 | ||
209 | /** Address space area structure. |
209 | /** Address space area structure. |
210 | * |
210 | * |
211 | * Each as_area_t structure describes one contiguous area of virtual memory. |
211 | * Each as_area_t structure describes one contiguous area of virtual memory. |
212 | */ |
212 | */ |
213 | typedef struct { |
213 | typedef struct { |
214 | mutex_t lock; |
214 | mutex_t lock; |
215 | /** Containing address space. */ |
215 | /** Containing address space. */ |
216 | as_t *as; |
216 | as_t *as; |
217 | /** |
217 | /** |
218 | * Flags related to the memory represented by the address space area. |
218 | * Flags related to the memory represented by the address space area. |
219 | */ |
219 | */ |
220 | int flags; |
220 | int flags; |
221 | /** Attributes related to the address space area itself. */ |
221 | /** Attributes related to the address space area itself. */ |
222 | int attributes; |
222 | int attributes; |
223 | /** Size of this area in multiples of PAGE_SIZE. */ |
223 | /** Size of this area in multiples of PAGE_SIZE. */ |
224 | count_t pages; |
224 | count_t pages; |
225 | /** Base address of this area. */ |
225 | /** Base address of this area. */ |
226 | uintptr_t base; |
226 | uintptr_t base; |
227 | /** Map of used space. */ |
227 | /** Map of used space. */ |
228 | btree_t used_space; |
228 | btree_t used_space; |
229 | 229 | ||
230 | /** |
230 | /** |
231 | * If the address space area has been shared, this pointer will |
231 | * If the address space area has been shared, this pointer will |
232 | * reference the share info structure. |
232 | * reference the share info structure. |
233 | */ |
233 | */ |
234 | share_info_t *sh_info; |
234 | share_info_t *sh_info; |
235 | 235 | ||
236 | /** Memory backend backing this address space area. */ |
236 | /** Memory backend backing this address space area. */ |
237 | struct mem_backend *backend; |
237 | struct mem_backend *backend; |
238 | 238 | ||
239 | /** Data to be used by the backend. */ |
239 | /** Data to be used by the backend. */ |
240 | mem_backend_data_t backend_data; |
240 | mem_backend_data_t backend_data; |
241 | } as_area_t; |
241 | } as_area_t; |
242 | 242 | ||
243 | /** Address space area backend structure. */ |
243 | /** Address space area backend structure. */ |
244 | typedef struct mem_backend { |
244 | typedef struct mem_backend { |
245 | int (* page_fault)(as_area_t *area, uintptr_t addr, pf_access_t access); |
245 | int (* page_fault)(as_area_t *area, uintptr_t addr, pf_access_t access); |
246 | void (* frame_free)(as_area_t *area, uintptr_t page, uintptr_t frame); |
246 | void (* frame_free)(as_area_t *area, uintptr_t page, uintptr_t frame); |
247 | void (* share)(as_area_t *area); |
247 | void (* share)(as_area_t *area); |
248 | } mem_backend_t; |
248 | } mem_backend_t; |
249 | 249 | ||
250 | extern as_t *AS_KERNEL; |
250 | extern as_t *AS_KERNEL; |
251 | 251 | ||
252 | #ifndef __OBJC__ |
252 | #ifndef __OBJC__ |
253 | extern as_operations_t *as_operations; |
253 | extern as_operations_t *as_operations; |
254 | #endif |
254 | #endif |
255 | 255 | ||
256 | extern link_t inactive_as_with_asid_head; |
256 | extern link_t inactive_as_with_asid_head; |
257 | 257 | ||
258 | extern void as_init(void); |
258 | extern void as_init(void); |
259 | 259 | ||
260 | extern as_t *as_create(int flags); |
260 | extern as_t *as_create(int flags); |
261 | extern void as_destroy(as_t *as); |
261 | extern void as_destroy(as_t *as); |
262 | extern void as_switch(as_t *old_as, as_t *new_as); |
262 | extern void as_switch(as_t *old_as, as_t *new_as); |
263 | extern int as_page_fault(uintptr_t page, pf_access_t access, istate_t *istate); |
263 | extern int as_page_fault(uintptr_t page, pf_access_t access, istate_t *istate); |
264 | 264 | ||
265 | extern as_area_t *as_area_create(as_t *as, int flags, size_t size, |
265 | extern as_area_t *as_area_create(as_t *as, int flags, size_t size, |
266 | uintptr_t base, int attrs, mem_backend_t *backend, |
266 | uintptr_t base, int attrs, mem_backend_t *backend, |
267 | mem_backend_data_t *backend_data); |
267 | mem_backend_data_t *backend_data); |
268 | extern int as_area_destroy(as_t *as, uintptr_t address); |
268 | extern int as_area_destroy(as_t *as, uintptr_t address); |
269 | extern int as_area_resize(as_t *as, uintptr_t address, size_t size, int flags); |
269 | extern int as_area_resize(as_t *as, uintptr_t address, size_t size, int flags); |
270 | int as_area_share(as_t *src_as, uintptr_t src_base, size_t acc_size, |
270 | int as_area_share(as_t *src_as, uintptr_t src_base, size_t acc_size, |
271 | as_t *dst_as, uintptr_t dst_base, int dst_flags_mask); |
271 | as_t *dst_as, uintptr_t dst_base, int dst_flags_mask); |
272 | 272 | ||
273 | extern int as_area_get_flags(as_area_t *area); |
273 | extern int as_area_get_flags(as_area_t *area); |
274 | extern bool as_area_check_access(as_area_t *area, pf_access_t access); |
274 | extern bool as_area_check_access(as_area_t *area, pf_access_t access); |
275 | extern size_t as_area_get_size(uintptr_t base); |
275 | extern size_t as_area_get_size(uintptr_t base); |
276 | extern int used_space_insert(as_area_t *a, uintptr_t page, count_t count); |
276 | extern int used_space_insert(as_area_t *a, uintptr_t page, count_t count); |
277 | extern int used_space_remove(as_area_t *a, uintptr_t page, count_t count); |
277 | extern int used_space_remove(as_area_t *a, uintptr_t page, count_t count); |
278 | 278 | ||
279 | 279 | ||
280 | /* Interface to be implemented by architectures. */ |
280 | /* Interface to be implemented by architectures. */ |
281 | #ifndef as_constructor_arch |
281 | #ifndef as_constructor_arch |
282 | extern int as_constructor_arch(as_t *as, int flags); |
282 | extern int as_constructor_arch(as_t *as, int flags); |
283 | #endif /* !def as_constructor_arch */ |
283 | #endif /* !def as_constructor_arch */ |
284 | #ifndef as_destructor_arch |
284 | #ifndef as_destructor_arch |
285 | extern int as_destructor_arch(as_t *as); |
285 | extern int as_destructor_arch(as_t *as); |
286 | #endif /* !def as_destructor_arch */ |
286 | #endif /* !def as_destructor_arch */ |
287 | #ifndef as_create_arch |
287 | #ifndef as_create_arch |
288 | extern int as_create_arch(as_t *as, int flags); |
288 | extern int as_create_arch(as_t *as, int flags); |
289 | #endif /* !def as_create_arch */ |
289 | #endif /* !def as_create_arch */ |
290 | #ifndef as_install_arch |
290 | #ifndef as_install_arch |
291 | extern void as_install_arch(as_t *as); |
291 | extern void as_install_arch(as_t *as); |
292 | #endif /* !def as_install_arch */ |
292 | #endif /* !def as_install_arch */ |
293 | #ifndef as_deinstall_arch |
293 | #ifndef as_deinstall_arch |
294 | extern void as_deinstall_arch(as_t *as); |
294 | extern void as_deinstall_arch(as_t *as); |
295 | #endif /* !def as_deinstall_arch */ |
295 | #endif /* !def as_deinstall_arch */ |
296 | 296 | ||
297 | /* Backend declarations and functions. */ |
297 | /* Backend declarations and functions. */ |
298 | extern mem_backend_t anon_backend; |
298 | extern mem_backend_t anon_backend; |
299 | extern mem_backend_t elf_backend; |
299 | extern mem_backend_t elf_backend; |
300 | extern mem_backend_t phys_backend; |
300 | extern mem_backend_t phys_backend; |
301 | 301 | ||
302 | extern unsigned int elf_load(elf_header_t *header, as_t *as); |
302 | extern unsigned int elf_load(elf_header_t *header, as_t *as); |
303 | 303 | ||
304 | /* Address space area related syscalls. */ |
304 | /* Address space area related syscalls. */ |
305 | extern unative_t sys_as_area_create(uintptr_t address, size_t size, int flags); |
305 | extern unative_t sys_as_area_create(uintptr_t address, size_t size, int flags); |
306 | extern unative_t sys_as_area_resize(uintptr_t address, size_t size, int flags); |
306 | extern unative_t sys_as_area_resize(uintptr_t address, size_t size, int flags); |
307 | extern unative_t sys_as_area_destroy(uintptr_t address); |
307 | extern unative_t sys_as_area_destroy(uintptr_t address); |
308 | 308 | ||
309 | /* Introspection functions. */ |
309 | /* Introspection functions. */ |
310 | extern void as_print(as_t *as); |
310 | extern void as_print(as_t *as); |
311 | 311 | ||
312 | #endif /* KERNEL */ |
312 | #endif /* KERNEL */ |
313 | 313 | ||
314 | #endif |
314 | #endif |
315 | 315 | ||
316 | /** @} |
316 | /** @} |
317 | */ |
317 | */ |
318 | 318 |