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| Rev 977 | Rev 1026 | ||
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| 46 | 46 | ||
| 47 | #define USTACK_ADDRESS USTACK_ADDRESS_ARCH |
47 | #define USTACK_ADDRESS USTACK_ADDRESS_ARCH |
| 48 | 48 | ||
| 49 | #define FLAG_AS_KERNEL (1 << 0) /**< Kernel address space. */ |
49 | #define FLAG_AS_KERNEL (1 << 0) /**< Kernel address space. */ |
| 50 | 50 | ||
| - | 51 | /** Address space area flags. */ |
|
| 51 | enum as_area_type { |
52 | #define AS_AREA_READ 1 |
| 52 | AS_AREA_TEXT = 1, AS_AREA_DATA, AS_AREA_STACK |
53 | #define AS_AREA_WRITE 2 |
| 53 | }; |
54 | #define AS_AREA_EXEC 4 |
| 54 | 55 | ||
| 55 | /** Address space area structure. |
56 | /** Address space area structure. |
| 56 | * |
57 | * |
| 57 | * Each as_area_t structure describes one contiguous area of virtual memory. |
58 | * Each as_area_t structure describes one contiguous area of virtual memory. |
| 58 | * In the future, it should not be difficult to support shared areas. |
59 | * In the future, it should not be difficult to support shared areas. |
| 59 | */ |
60 | */ |
| 60 | struct as_area { |
61 | struct as_area { |
| 61 | SPINLOCK_DECLARE(lock); |
62 | SPINLOCK_DECLARE(lock); |
| 62 | link_t link; |
63 | link_t link; |
| 63 | as_area_type_t type; |
64 | int flags; |
| 64 | size_t size; /**< Size of this area in multiples of PAGE_SIZE. */ |
65 | size_t size; /**< Size of this area in multiples of PAGE_SIZE. */ |
| 65 | __address base; /**< Base address of this area. */ |
66 | __address base; /**< Base address of this area. */ |
| 66 | }; |
67 | }; |
| 67 | 68 | ||
| 68 | /** Address space structure. |
69 | /** Address space structure. |
| Line 101... | Line 102... | ||
| 101 | extern spinlock_t as_lock; |
102 | extern spinlock_t as_lock; |
| 102 | extern link_t inactive_as_with_asid_head; |
103 | extern link_t inactive_as_with_asid_head; |
| 103 | 104 | ||
| 104 | extern void as_init(void); |
105 | extern void as_init(void); |
| 105 | extern as_t *as_create(int flags); |
106 | extern as_t *as_create(int flags); |
| 106 | extern as_area_t *as_area_create(as_t *as, as_area_type_t type, size_t size, __address base); |
107 | extern as_area_t *as_area_create(as_t *as, int flags, size_t size, __address base); |
| 107 | extern __address as_remap(as_t *as, __address address, size_t size, int flags); |
108 | extern __address as_remap(as_t *as, __address address, size_t size, int flags); |
| 108 | extern void as_set_mapping(as_t *as, __address page, __address frame); |
109 | extern void as_set_mapping(as_t *as, __address page, __address frame); |
| 109 | extern int as_page_fault(__address page); |
110 | extern int as_page_fault(__address page); |
| 110 | extern void as_switch(as_t *old, as_t *new); |
111 | extern void as_switch(as_t *old, as_t *new); |
| 111 | extern void as_free(as_t *as); |
112 | extern void as_free(as_t *as); |