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Rev 391 | Rev 413 | ||
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Line 87... | Line 87... | ||
87 | { |
87 | { |
88 | } |
88 | } |
89 | 89 | ||
90 | vm_area_t *vm_area_create(vm_t *m, vm_type_t type, size_t size, __address addr) |
90 | vm_area_t *vm_area_create(vm_t *m, vm_type_t type, size_t size, __address addr) |
91 | { |
91 | { |
92 | pri_t pri; |
92 | ipl_t ipl; |
93 | vm_area_t *a; |
93 | vm_area_t *a; |
94 | 94 | ||
95 | if (addr % PAGE_SIZE) |
95 | if (addr % PAGE_SIZE) |
96 | panic("addr not aligned to a page boundary"); |
96 | panic("addr not aligned to a page boundary"); |
97 | 97 | ||
98 | pri = cpu_priority_high(); |
98 | ipl = interrupts_disable(); |
99 | spinlock_lock(&m->lock); |
99 | spinlock_lock(&m->lock); |
100 | 100 | ||
101 | /* |
101 | /* |
102 | * TODO: test vm_area which is to be created doesn't overlap with an existing one. |
102 | * TODO: test vm_area which is to be created doesn't overlap with an existing one. |
103 | */ |
103 | */ |
Line 108... | Line 108... | ||
108 | 108 | ||
109 | a->mapping = (__address *) malloc(size * sizeof(__address)); |
109 | a->mapping = (__address *) malloc(size * sizeof(__address)); |
110 | if (!a->mapping) { |
110 | if (!a->mapping) { |
111 | free(a); |
111 | free(a); |
112 | spinlock_unlock(&m->lock); |
112 | spinlock_unlock(&m->lock); |
113 | cpu_priority_restore(pri); |
113 | interrupts_restore(ipl); |
114 | return NULL; |
114 | return NULL; |
115 | } |
115 | } |
116 | 116 | ||
117 | for (i=0; i<size; i++) |
117 | for (i=0; i<size; i++) |
118 | a->mapping[i] = frame_alloc(0); |
118 | a->mapping[i] = frame_alloc(0); |
Line 127... | Line 127... | ||
127 | list_append(&a->link, &m->vm_area_head); |
127 | list_append(&a->link, &m->vm_area_head); |
128 | 128 | ||
129 | } |
129 | } |
130 | 130 | ||
131 | spinlock_unlock(&m->lock); |
131 | spinlock_unlock(&m->lock); |
132 | cpu_priority_restore(pri); |
132 | interrupts_restore(ipl); |
133 | 133 | ||
134 | return a; |
134 | return a; |
135 | } |
135 | } |
136 | 136 | ||
137 | void vm_area_destroy(vm_area_t *a) |
137 | void vm_area_destroy(vm_area_t *a) |
Line 139... | Line 139... | ||
139 | } |
139 | } |
140 | 140 | ||
141 | void vm_area_map(vm_area_t *a, vm_t *m) |
141 | void vm_area_map(vm_area_t *a, vm_t *m) |
142 | { |
142 | { |
143 | int i, flags; |
143 | int i, flags; |
144 | pri_t pri; |
144 | ipl_t ipl; |
145 | 145 | ||
146 | pri = cpu_priority_high(); |
146 | ipl = interrupts_disable(); |
147 | spinlock_lock(&m->lock); |
147 | spinlock_lock(&m->lock); |
148 | spinlock_lock(&a->lock); |
148 | spinlock_lock(&a->lock); |
149 | 149 | ||
150 | switch (a->type) { |
150 | switch (a->type) { |
151 | case VMA_TEXT: |
151 | case VMA_TEXT: |
Line 163... | Line 163... | ||
163 | for (i=0; i<a->size; i++) |
163 | for (i=0; i<a->size; i++) |
164 | map_page_to_frame(a->address + i*PAGE_SIZE, a->mapping[i], flags, (__address) m->ptl0); |
164 | map_page_to_frame(a->address + i*PAGE_SIZE, a->mapping[i], flags, (__address) m->ptl0); |
165 | 165 | ||
166 | spinlock_unlock(&a->lock); |
166 | spinlock_unlock(&a->lock); |
167 | spinlock_unlock(&m->lock); |
167 | spinlock_unlock(&m->lock); |
168 | cpu_priority_restore(pri); |
168 | interrupts_restore(ipl); |
169 | } |
169 | } |
170 | 170 | ||
171 | void vm_area_unmap(vm_area_t *a, vm_t *m) |
171 | void vm_area_unmap(vm_area_t *a, vm_t *m) |
172 | { |
172 | { |
173 | int i; |
173 | int i; |
174 | pri_t pri; |
174 | ipl_t ipl; |
175 | 175 | ||
176 | pri = cpu_priority_high(); |
176 | ipl = interrupts_disable(); |
177 | spinlock_lock(&m->lock); |
177 | spinlock_lock(&m->lock); |
178 | spinlock_lock(&a->lock); |
178 | spinlock_lock(&a->lock); |
179 | 179 | ||
180 | ASSERT(m->ptl0); |
180 | ASSERT(m->ptl0); |
181 | for (i=0; i<a->size; i++) |
181 | for (i=0; i<a->size; i++) |
182 | map_page_to_frame(a->address + i*PAGE_SIZE, 0, PAGE_NOT_PRESENT, (__address) m->ptl0); |
182 | map_page_to_frame(a->address + i*PAGE_SIZE, 0, PAGE_NOT_PRESENT, (__address) m->ptl0); |
183 | 183 | ||
184 | spinlock_unlock(&a->lock); |
184 | spinlock_unlock(&a->lock); |
185 | spinlock_unlock(&m->lock); |
185 | spinlock_unlock(&m->lock); |
186 | cpu_priority_restore(pri); |
186 | interrupts_restore(ipl); |
187 | } |
187 | } |
188 | 188 | ||
189 | void vm_install(vm_t *m) |
189 | void vm_install(vm_t *m) |
190 | { |
190 | { |
191 | link_t *l; |
191 | link_t *l; |
192 | pri_t pri; |
192 | ipl_t ipl; |
193 | 193 | ||
194 | pri = cpu_priority_high(); |
194 | ipl = interrupts_disable(); |
195 | 195 | ||
196 | tlb_shootdown_start(); |
196 | tlb_shootdown_start(); |
197 | spinlock_lock(&m->lock); |
197 | spinlock_lock(&m->lock); |
198 | 198 | ||
199 | ASSERT(m->ptl0); |
199 | ASSERT(m->ptl0); |
200 | SET_PTL0_ADDRESS(m->ptl0); |
200 | SET_PTL0_ADDRESS(m->ptl0); |
201 | 201 | ||
202 | spinlock_unlock(&m->lock); |
202 | spinlock_unlock(&m->lock); |
203 | tlb_shootdown_finalize(); |
203 | tlb_shootdown_finalize(); |
204 | 204 | ||
205 | cpu_priority_restore(pri); |
205 | interrupts_restore(ipl); |
206 | 206 | ||
207 | vm_install_arch(m); |
207 | vm_install_arch(m); |
208 | 208 | ||
209 | VM = m; |
209 | VM = m; |
210 | } |
210 | } |