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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__ |
|
- | 57 | #include <lib/objc.h> |
|
- | 58 | #endif |
|
- | 59 | ||
56 | /** |
60 | /** |
57 | * 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 |
58 | * other. |
62 | * other. |
59 | */ |
63 | */ |
60 | #define KERNEL_ADDRESS_SPACE_SHADOWED KERNEL_ADDRESS_SPACE_SHADOWED_ARCH |
64 | #define KERNEL_ADDRESS_SPACE_SHADOWED KERNEL_ADDRESS_SPACE_SHADOWED_ARCH |
61 | 65 | ||
62 | #define KERNEL_ADDRESS_SPACE_START KERNEL_ADDRESS_SPACE_START_ARCH |
66 | #define KERNEL_ADDRESS_SPACE_START KERNEL_ADDRESS_SPACE_START_ARCH |
63 | #define KERNEL_ADDRESS_SPACE_END KERNEL_ADDRESS_SPACE_END_ARCH |
67 | #define KERNEL_ADDRESS_SPACE_END KERNEL_ADDRESS_SPACE_END_ARCH |
64 | #define USER_ADDRESS_SPACE_START USER_ADDRESS_SPACE_START_ARCH |
68 | #define USER_ADDRESS_SPACE_START USER_ADDRESS_SPACE_START_ARCH |
65 | #define USER_ADDRESS_SPACE_END USER_ADDRESS_SPACE_END_ARCH |
69 | #define USER_ADDRESS_SPACE_END USER_ADDRESS_SPACE_END_ARCH |
66 | 70 | ||
67 | #define USTACK_ADDRESS USTACK_ADDRESS_ARCH |
71 | #define USTACK_ADDRESS USTACK_ADDRESS_ARCH |
68 | 72 | ||
69 | /** Kernel address space. */ |
73 | /** Kernel address space. */ |
70 | #define FLAG_AS_KERNEL (1 << 0) |
74 | #define FLAG_AS_KERNEL (1 << 0) |
71 | 75 | ||
72 | /* Address space area attributes. */ |
76 | /* Address space area attributes. */ |
73 | #define AS_AREA_ATTR_NONE 0 |
77 | #define AS_AREA_ATTR_NONE 0 |
74 | #define AS_AREA_ATTR_PARTIAL 1 /**< Not fully initialized area. */ |
78 | #define AS_AREA_ATTR_PARTIAL 1 /**< Not fully initialized area. */ |
75 | 79 | ||
76 | /** The page fault was not resolved by as_page_fault(). */ |
80 | /** The page fault was not resolved by as_page_fault(). */ |
77 | #define AS_PF_FAULT 0 |
81 | #define AS_PF_FAULT 0 |
78 | /** The page fault was resolved by as_page_fault(). */ |
82 | /** The page fault was resolved by as_page_fault(). */ |
79 | #define AS_PF_OK 1 |
83 | #define AS_PF_OK 1 |
80 | /** 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(). */ |
81 | #define AS_PF_DEFER 2 |
85 | #define AS_PF_DEFER 2 |
82 | 86 | ||
83 | #ifdef __OBJC__ |
87 | #ifdef __OBJC__ |
84 | @interface as_t { |
88 | @interface as_t : base_t { |
85 | @public |
89 | @public |
86 | /** Protected by asidlock. */ |
90 | /** Protected by asidlock. */ |
87 | link_t inactive_as_with_asid_link; |
91 | link_t inactive_as_with_asid_link; |
88 | 92 | ||
89 | mutex_t lock; |
93 | mutex_t lock; |
90 | 94 | ||
91 | /** Number of references (i.e tasks that reference this as). */ |
95 | /** Number of references (i.e tasks that reference this as). */ |
92 | count_t refcount; |
96 | count_t refcount; |
93 | 97 | ||
94 | /** Number of processors on wich is this address space active. */ |
98 | /** Number of processors on wich is this address space active. */ |
95 | count_t cpu_refcount; |
99 | count_t cpu_refcount; |
96 | 100 | ||
97 | /** B+tree of address space areas. */ |
101 | /** B+tree of address space areas. */ |
98 | btree_t as_area_btree; |
102 | btree_t as_area_btree; |
99 | 103 | ||
100 | /** |
104 | /** |
101 | * Address space identifier. |
105 | * Address space identifier. |
102 | * Constant on architectures that do not support ASIDs. |
106 | * Constant on architectures that do not support ASIDs. |
103 | */ |
107 | */ |
104 | asid_t asid; |
108 | asid_t asid; |
105 | 109 | ||
106 | /** Non-generic content. */ |
110 | /** Non-generic content. */ |
107 | as_genarch_t genarch; |
111 | as_genarch_t genarch; |
108 | 112 | ||
109 | /** Architecture specific content. */ |
113 | /** Architecture specific content. */ |
110 | as_arch_t arch; |
114 | as_arch_t arch; |
111 | } |
115 | } |
- | 116 | ||
112 | + (pte_t *) page_table_create: (int) flags; |
117 | + (pte_t *) page_table_create: (int) flags; |
113 | + (void) page_table_destroy: (pte_t *) page_table; |
118 | + (void) page_table_destroy: (pte_t *) page_table; |
114 | - (void) page_table_lock: (bool) _lock; |
119 | - (void) page_table_lock: (bool) _lock; |
115 | - (void) page_table_unlock: (bool) unlock; |
120 | - (void) page_table_unlock: (bool) unlock; |
- | 121 | ||
116 | @end |
122 | @end |
117 | 123 | ||
118 | #else |
124 | #else |
119 | 125 | ||
120 | /** Address space structure. |
126 | /** Address space structure. |
121 | * |
127 | * |
122 | * as_t contains the list of as_areas of userspace accessible |
128 | * as_t contains the list of as_areas of userspace accessible |
123 | * pages for one or more tasks. Ranges of kernel memory pages are not |
129 | * pages for one or more tasks. Ranges of kernel memory pages are not |
124 | * supposed to figure in the list as they are shared by all tasks and |
130 | * supposed to figure in the list as they are shared by all tasks and |
125 | * set up during system initialization. |
131 | * set up during system initialization. |
126 | */ |
132 | */ |
127 | typedef struct as { |
133 | typedef struct as { |
128 | /** Protected by asidlock. */ |
134 | /** Protected by asidlock. */ |
129 | link_t inactive_as_with_asid_link; |
135 | link_t inactive_as_with_asid_link; |
130 | 136 | ||
131 | mutex_t lock; |
137 | mutex_t lock; |
132 | 138 | ||
133 | /** Number of references (i.e tasks that reference this as). */ |
139 | /** Number of references (i.e tasks that reference this as). */ |
134 | count_t refcount; |
140 | count_t refcount; |
135 | 141 | ||
136 | /** Number of processors on wich is this address space active. */ |
142 | /** Number of processors on wich is this address space active. */ |
137 | count_t cpu_refcount; |
143 | count_t cpu_refcount; |
138 | 144 | ||
139 | /** B+tree of address space areas. */ |
145 | /** B+tree of address space areas. */ |
140 | btree_t as_area_btree; |
146 | btree_t as_area_btree; |
141 | 147 | ||
142 | /** |
148 | /** |
143 | * Address space identifier. |
149 | * Address space identifier. |
144 | * Constant on architectures that do not support ASIDs. |
150 | * Constant on architectures that do not support ASIDs. |
145 | */ |
151 | */ |
146 | asid_t asid; |
152 | asid_t asid; |
147 | 153 | ||
148 | /** Non-generic content. */ |
154 | /** Non-generic content. */ |
149 | as_genarch_t genarch; |
155 | as_genarch_t genarch; |
150 | 156 | ||
151 | /** Architecture specific content. */ |
157 | /** Architecture specific content. */ |
152 | as_arch_t arch; |
158 | as_arch_t arch; |
153 | } as_t; |
159 | } as_t; |
154 | 160 | ||
155 | typedef struct { |
161 | typedef struct { |
156 | pte_t *(* page_table_create)(int flags); |
162 | pte_t *(* page_table_create)(int flags); |
157 | void (* page_table_destroy)(pte_t *page_table); |
163 | void (* page_table_destroy)(pte_t *page_table); |
158 | void (* page_table_lock)(as_t *as, bool lock); |
164 | void (* page_table_lock)(as_t *as, bool lock); |
159 | void (* page_table_unlock)(as_t *as, bool unlock); |
165 | void (* page_table_unlock)(as_t *as, bool unlock); |
160 | } as_operations_t; |
166 | } as_operations_t; |
161 | #endif |
167 | #endif |
162 | 168 | ||
163 | /** |
169 | /** |
164 | * This structure contains information associated with the shared address space |
170 | * This structure contains information associated with the shared address space |
165 | * area. |
171 | * area. |
166 | */ |
172 | */ |
167 | typedef struct { |
173 | typedef struct { |
168 | /** This lock must be acquired only when the as_area lock is held. */ |
174 | /** This lock must be acquired only when the as_area lock is held. */ |
169 | mutex_t lock; |
175 | mutex_t lock; |
170 | /** This structure can be deallocated if refcount drops to 0. */ |
176 | /** This structure can be deallocated if refcount drops to 0. */ |
171 | count_t refcount; |
177 | count_t refcount; |
172 | /** |
178 | /** |
173 | * B+tree containing complete map of anonymous pages of the shared area. |
179 | * B+tree containing complete map of anonymous pages of the shared area. |
174 | */ |
180 | */ |
175 | btree_t pagemap; |
181 | btree_t pagemap; |
176 | } share_info_t; |
182 | } share_info_t; |
177 | 183 | ||
178 | /** Page fault access type. */ |
184 | /** Page fault access type. */ |
179 | typedef enum { |
185 | typedef enum { |
180 | PF_ACCESS_READ, |
186 | PF_ACCESS_READ, |
181 | PF_ACCESS_WRITE, |
187 | PF_ACCESS_WRITE, |
182 | PF_ACCESS_EXEC |
188 | PF_ACCESS_EXEC |
183 | } pf_access_t; |
189 | } pf_access_t; |
184 | 190 | ||
185 | struct mem_backend; |
191 | struct mem_backend; |
186 | 192 | ||
187 | /** Backend data stored in address space area. */ |
193 | /** Backend data stored in address space area. */ |
188 | typedef union mem_backend_data { |
194 | typedef union mem_backend_data { |
189 | struct { /**< elf_backend members */ |
195 | struct { /**< elf_backend members */ |
190 | elf_header_t *elf; |
196 | elf_header_t *elf; |
191 | elf_segment_header_t *segment; |
197 | elf_segment_header_t *segment; |
192 | }; |
198 | }; |
193 | struct { /**< phys_backend members */ |
199 | struct { /**< phys_backend members */ |
194 | uintptr_t base; |
200 | uintptr_t base; |
195 | count_t frames; |
201 | count_t frames; |
196 | }; |
202 | }; |
197 | } mem_backend_data_t; |
203 | } mem_backend_data_t; |
198 | 204 | ||
199 | /** Address space area structure. |
205 | /** Address space area structure. |
200 | * |
206 | * |
201 | * Each as_area_t structure describes one contiguous area of virtual memory. |
207 | * Each as_area_t structure describes one contiguous area of virtual memory. |
202 | * In the future, it should not be difficult to support shared areas. |
208 | * In the future, it should not be difficult to support shared areas. |
203 | */ |
209 | */ |
204 | typedef struct { |
210 | typedef struct { |
205 | mutex_t lock; |
211 | mutex_t lock; |
206 | /** Containing address space. */ |
212 | /** Containing address space. */ |
207 | as_t *as; |
213 | as_t *as; |
208 | /** |
214 | /** |
209 | * Flags related to the memory represented by the address space area. |
215 | * Flags related to the memory represented by the address space area. |
210 | */ |
216 | */ |
211 | int flags; |
217 | int flags; |
212 | /** Attributes related to the address space area itself. */ |
218 | /** Attributes related to the address space area itself. */ |
213 | int attributes; |
219 | int attributes; |
214 | /** Size of this area in multiples of PAGE_SIZE. */ |
220 | /** Size of this area in multiples of PAGE_SIZE. */ |
215 | count_t pages; |
221 | count_t pages; |
216 | /** Base address of this area. */ |
222 | /** Base address of this area. */ |
217 | uintptr_t base; |
223 | uintptr_t base; |
218 | /** Map of used space. */ |
224 | /** Map of used space. */ |
219 | btree_t used_space; |
225 | btree_t used_space; |
220 | 226 | ||
221 | /** |
227 | /** |
222 | * If the address space area has been shared, this pointer will |
228 | * If the address space area has been shared, this pointer will |
223 | * reference the share info structure. |
229 | * reference the share info structure. |
224 | */ |
230 | */ |
225 | share_info_t *sh_info; |
231 | share_info_t *sh_info; |
226 | 232 | ||
227 | /** Memory backend backing this address space area. */ |
233 | /** Memory backend backing this address space area. */ |
228 | struct mem_backend *backend; |
234 | struct mem_backend *backend; |
229 | 235 | ||
230 | /** Data to be used by the backend. */ |
236 | /** Data to be used by the backend. */ |
231 | mem_backend_data_t backend_data; |
237 | mem_backend_data_t backend_data; |
232 | } as_area_t; |
238 | } as_area_t; |
233 | 239 | ||
234 | /** Address space area backend structure. */ |
240 | /** Address space area backend structure. */ |
235 | typedef struct mem_backend { |
241 | typedef struct mem_backend { |
236 | int (* page_fault)(as_area_t *area, uintptr_t addr, pf_access_t access); |
242 | int (* page_fault)(as_area_t *area, uintptr_t addr, pf_access_t access); |
237 | void (* frame_free)(as_area_t *area, uintptr_t page, uintptr_t frame); |
243 | void (* frame_free)(as_area_t *area, uintptr_t page, uintptr_t frame); |
238 | void (* share)(as_area_t *area); |
244 | void (* share)(as_area_t *area); |
239 | } mem_backend_t; |
245 | } mem_backend_t; |
240 | 246 | ||
241 | extern as_t *AS_KERNEL; |
247 | extern as_t *AS_KERNEL; |
242 | 248 | ||
243 | #ifndef __OBJC__ |
249 | #ifndef __OBJC__ |
244 | extern as_operations_t *as_operations; |
250 | extern as_operations_t *as_operations; |
245 | #endif |
251 | #endif |
246 | 252 | ||
247 | SPINLOCK_EXTERN(inactive_as_with_asid_lock); |
253 | SPINLOCK_EXTERN(inactive_as_with_asid_lock); |
248 | extern link_t inactive_as_with_asid_head; |
254 | extern link_t inactive_as_with_asid_head; |
249 | 255 | ||
250 | extern void as_init(void); |
256 | extern void as_init(void); |
251 | 257 | ||
252 | extern as_t *as_create(int flags); |
258 | extern as_t *as_create(int flags); |
253 | extern void as_destroy(as_t *as); |
259 | extern void as_destroy(as_t *as); |
254 | extern void as_switch(as_t *old_as, as_t *new_as); |
260 | extern void as_switch(as_t *old_as, as_t *new_as); |
255 | extern int as_page_fault(uintptr_t page, pf_access_t access, istate_t *istate); |
261 | extern int as_page_fault(uintptr_t page, pf_access_t access, istate_t *istate); |
256 | 262 | ||
257 | extern as_area_t *as_area_create(as_t *as, int flags, size_t size, |
263 | extern as_area_t *as_area_create(as_t *as, int flags, size_t size, |
258 | uintptr_t base, int attrs, mem_backend_t *backend, |
264 | uintptr_t base, int attrs, mem_backend_t *backend, |
259 | mem_backend_data_t *backend_data); |
265 | mem_backend_data_t *backend_data); |
260 | extern int as_area_destroy(as_t *as, uintptr_t address); |
266 | extern int as_area_destroy(as_t *as, uintptr_t address); |
261 | extern int as_area_resize(as_t *as, uintptr_t address, size_t size, int flags); |
267 | extern int as_area_resize(as_t *as, uintptr_t address, size_t size, int flags); |
262 | int as_area_share(as_t *src_as, uintptr_t src_base, size_t acc_size, |
268 | int as_area_share(as_t *src_as, uintptr_t src_base, size_t acc_size, |
263 | as_t *dst_as, uintptr_t dst_base, int dst_flags_mask); |
269 | as_t *dst_as, uintptr_t dst_base, int dst_flags_mask); |
264 | 270 | ||
265 | extern int as_area_get_flags(as_area_t *area); |
271 | extern int as_area_get_flags(as_area_t *area); |
266 | extern bool as_area_check_access(as_area_t *area, pf_access_t access); |
272 | extern bool as_area_check_access(as_area_t *area, pf_access_t access); |
267 | extern size_t as_get_size(uintptr_t base); |
273 | extern size_t as_get_size(uintptr_t base); |
268 | extern int used_space_insert(as_area_t *a, uintptr_t page, count_t count); |
274 | extern int used_space_insert(as_area_t *a, uintptr_t page, count_t count); |
269 | extern int used_space_remove(as_area_t *a, uintptr_t page, count_t count); |
275 | extern int used_space_remove(as_area_t *a, uintptr_t page, count_t count); |
270 | 276 | ||
271 | 277 | ||
272 | /* Interface to be implemented by architectures. */ |
278 | /* Interface to be implemented by architectures. */ |
273 | #ifndef as_constructor_arch |
279 | #ifndef as_constructor_arch |
274 | extern int as_constructor_arch(as_t *as, int flags); |
280 | extern int as_constructor_arch(as_t *as, int flags); |
275 | #endif /* !def as_constructor_arch */ |
281 | #endif /* !def as_constructor_arch */ |
276 | #ifndef as_destructor_arch |
282 | #ifndef as_destructor_arch |
277 | extern int as_destructor_arch(as_t *as); |
283 | extern int as_destructor_arch(as_t *as); |
278 | #endif /* !def as_destructor_arch */ |
284 | #endif /* !def as_destructor_arch */ |
279 | #ifndef as_create_arch |
285 | #ifndef as_create_arch |
280 | extern int as_create_arch(as_t *as, int flags); |
286 | extern int as_create_arch(as_t *as, int flags); |
281 | #endif /* !def as_create_arch */ |
287 | #endif /* !def as_create_arch */ |
282 | #ifndef as_install_arch |
288 | #ifndef as_install_arch |
283 | extern void as_install_arch(as_t *as); |
289 | extern void as_install_arch(as_t *as); |
284 | #endif /* !def as_install_arch */ |
290 | #endif /* !def as_install_arch */ |
285 | #ifndef as_deinstall_arch |
291 | #ifndef as_deinstall_arch |
286 | extern void as_deinstall_arch(as_t *as); |
292 | extern void as_deinstall_arch(as_t *as); |
287 | #endif /* !def as_deinstall_arch */ |
293 | #endif /* !def as_deinstall_arch */ |
288 | 294 | ||
289 | /* Backend declarations and functions. */ |
295 | /* Backend declarations and functions. */ |
290 | extern mem_backend_t anon_backend; |
296 | extern mem_backend_t anon_backend; |
291 | extern mem_backend_t elf_backend; |
297 | extern mem_backend_t elf_backend; |
292 | extern mem_backend_t phys_backend; |
298 | extern mem_backend_t phys_backend; |
293 | 299 | ||
294 | extern int elf_load(elf_header_t *header, as_t *as); |
300 | extern int elf_load(elf_header_t *header, as_t *as); |
295 | 301 | ||
296 | /* Address space area related syscalls. */ |
302 | /* Address space area related syscalls. */ |
297 | extern unative_t sys_as_area_create(uintptr_t address, size_t size, int flags); |
303 | extern unative_t sys_as_area_create(uintptr_t address, size_t size, int flags); |
298 | extern unative_t sys_as_area_resize(uintptr_t address, size_t size, int flags); |
304 | extern unative_t sys_as_area_resize(uintptr_t address, size_t size, int flags); |
299 | extern unative_t sys_as_area_destroy(uintptr_t address); |
305 | extern unative_t sys_as_area_destroy(uintptr_t address); |
300 | 306 | ||
301 | /* Introspection functions. */ |
307 | /* Introspection functions. */ |
302 | extern void as_print(as_t *as); |
308 | extern void as_print(as_t *as); |
303 | 309 | ||
304 | #endif /* KERNEL */ |
310 | #endif /* KERNEL */ |
305 | 311 | ||
306 | #endif |
312 | #endif |
307 | 313 | ||
308 | /** @} |
314 | /** @} |
309 | */ |
315 | */ |
310 | 316 |