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| Rev 167 | Rev 168 | ||
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| Line 46... | Line 46... | ||
| 46 | #define KAS_INDICES (1+(KAS_END_INDEX-KAS_START_INDEX)) |
46 | #define KAS_INDICES (1+(KAS_END_INDEX-KAS_START_INDEX)) |
| 47 | 47 | ||
| 48 | vm_t *vm_create(pte_t *ptl0) |
48 | vm_t *vm_create(pte_t *ptl0) |
| 49 | { |
49 | { |
| 50 | vm_t *m; |
50 | vm_t *m; |
| 51 | 51 | ||
| 52 | m = (vm_t *) malloc(sizeof(vm_t)); |
52 | m = (vm_t *) malloc(sizeof(vm_t)); |
| 53 | if (m) { |
53 | if (m) { |
| 54 | spinlock_initialize(&m->lock); |
54 | spinlock_initialize(&m->lock); |
| 55 | list_initialize(&m->vm_area_head); |
55 | list_initialize(&m->vm_area_head); |
| 56 | 56 | ||
| 57 | /* |
57 | /* |
| 58 | * Each vm_t is supposed to have its own page table. |
58 | * Each vm_t is supposed to have its own page table. |
| 59 | * It is either passed one or it has to allocate and set one up. |
59 | * It is either passed one or it has to allocate and set one up. |
| 60 | */ |
60 | */ |
| - | 61 | m->ptl0 = ptl0; |
|
| 61 | if (!(m->ptl0 = ptl0)) { |
62 | if (!m->ptl0) { |
| 62 | pte_t *src_ptl0, *dst_ptl0; |
63 | pte_t *src_ptl0, *dst_ptl0; |
| 63 | 64 | ||
| 64 | src_ptl0 = (pte_t *) PA2KA(GET_PTL0_ADDRESS()); |
65 | src_ptl0 = (pte_t *) PA2KA((__address) GET_PTL0_ADDRESS()); |
| 65 | dst_ptl0 = (pte_t *) frame_alloc(FRAME_KA | FRAME_PANIC); |
66 | dst_ptl0 = (pte_t *) frame_alloc(FRAME_KA | FRAME_PANIC); |
| 66 | memsetb((__address) dst_ptl0, PAGE_SIZE, 0); |
67 | // memsetb((__address) dst_ptl0, PAGE_SIZE, 0); |
| 67 | memcopy((__address) &src_ptl0[KAS_START_INDEX], (__address) &dst_ptl0[KAS_START_INDEX], KAS_INDICES*sizeof(pte_t)); |
68 | // memcopy((__address) &src_ptl0[KAS_START_INDEX], (__address) &dst_ptl0[KAS_START_INDEX], KAS_INDICES*sizeof(pte_t)); |
| - | 69 | memcopy(PA2KA((__address) GET_PTL0_ADDRESS()), (__address) dst_ptl0, PAGE_SIZE); |
|
| 68 | m->ptl0 = (pte_t *) KA2PA(dst_ptl0); |
70 | m->ptl0 = (pte_t *) KA2PA((__address) dst_ptl0); |
| 69 | } |
71 | } |
| 70 | } |
72 | } |
| 71 | 73 | ||
| 72 | return m; |
74 | return m; |
| 73 | } |
75 | } |
| 74 | 76 | ||
| 75 | void vm_destroy(vm_t *m) |
77 | void vm_destroy(vm_t *m) |
| 76 | { |
78 | { |