| /* |
| * Copyright 2017, Data61 |
| * Commonwealth Scientific and Industrial Research Organisation (CSIRO) |
| * ABN 41 687 119 230. |
| * |
| * This software may be distributed and modified according to the terms of |
| * the BSD 2-Clause license. Note that NO WARRANTY is provided. |
| * See "LICENSE_BSD2.txt" for details. |
| * |
| * @TAG(DATA61_BSD) |
| */ |
| |
| #include <simple/simple_helpers.h> |
| |
| bool simple_is_untyped_cap(simple_t *simple, seL4_CPtr pos) |
| { |
| int i; |
| |
| for (i = 0; i < simple_get_untyped_count(simple); i++) { |
| seL4_CPtr ut_pos = simple_get_nth_untyped(simple, i, NULL, NULL, NULL); |
| if (ut_pos == pos) { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| int simple_vka_cspace_alloc(void *data, seL4_CPtr *slot) |
| { |
| assert(data && slot); |
| |
| simple_t *simple = data; |
| seL4_CNode cnode = simple_get_cnode(simple); |
| int i = 0; |
| |
| /* Keep trying to find the next free slot by seeing if we can copy something there */ |
| seL4_Error error = seL4_CNode_Copy(cnode, simple_get_cap_count(simple) + i, seL4_WordBits, cnode, cnode, seL4_WordBits, seL4_AllRights); |
| while (error == seL4_DeleteFirst) { |
| i++; |
| error = seL4_CNode_Copy(cnode, simple_get_cap_count(simple) + i, seL4_WordBits, cnode, cnode, seL4_WordBits, seL4_AllRights); |
| } |
| |
| if (error != seL4_NoError) { |
| error = seL4_CNode_Delete(cnode, simple_get_cap_count(simple) + i, seL4_WordBits); |
| return error; |
| } |
| |
| error = seL4_CNode_Delete(cnode, simple_get_cap_count(simple) + i, seL4_WordBits); |
| if (error != seL4_NoError) { |
| return error; |
| } |
| |
| *slot = simple_get_cap_count(simple) + i; |
| return seL4_NoError; |
| } |
| |
| void simple_vka_cspace_make_path(void *data, seL4_CPtr slot, cspacepath_t *path) |
| { |
| assert(data && path); |
| |
| simple_t *simple = data; |
| |
| path->capPtr = slot; |
| path->capDepth = seL4_WordBits; |
| path->root = simple_get_cnode(simple); |
| path->dest = simple_get_cnode(simple); |
| path->offset = slot; |
| path->destDepth = seL4_WordBits; |
| } |
| |
| void simple_make_vka(simple_t *simple, vka_t *vka) |
| { |
| vka->data = simple; |
| vka->cspace_alloc = &simple_vka_cspace_alloc; |
| vka->cspace_make_path = &simple_vka_cspace_make_path; |
| vka->utspace_alloc = NULL; |
| vka->utspace_alloc_maybe_device = NULL; |
| vka->cspace_free = NULL; |
| vka->utspace_free = NULL; |
| } |
| |
| seL4_CPtr simple_last_valid_cap(simple_t *simple) |
| { |
| seL4_CPtr largest = 0; |
| int i; |
| for (i = 0; i < simple_get_cap_count(simple); i++) { |
| seL4_CPtr cap = simple_get_nth_cap(simple, i); |
| if (cap > largest) { |
| largest = cap; |
| } |
| } |
| return largest; |
| } |