1/*
2 * Copyright 2018, Data61
3 * Commonwealth Scientific and Industrial Research Organisation (CSIRO)
4 * ABN 41 687 119 230.
5 *
6 * This software may be distributed and modified according to the terms of
7 * the BSD 2-Clause license. Note that NO WARRANTY is provided.
8 * See "LICENSE_BSD2.txt" for details.
9 *
10 * @TAG(DATA61_BSD)
11 */
12
13#include <vspace/mapping.h>
14
15int vspace_get_map_obj(seL4_Word failed_bits, vspace_map_obj_t *obj) {
16    if (unlikely(obj == NULL)) {
17        return EINVAL;
18    }
19
20    switch (failed_bits) {
21    case SEL4_MAPPING_LOOKUP_NO_PT:
22        obj->size_bits = seL4_PageTableBits;
23        obj->type = seL4_ARM_PageTableObject;
24        obj->map_fn = seL4_ARM_PageTable_Map;
25        return 0;
26    case SEL4_MAPPING_LOOKUP_NO_PD:
27        obj->size_bits = seL4_PageDirBits;
28        obj->type = seL4_ARM_PageDirectoryObject;
29        obj->map_fn = seL4_ARM_PageDirectory_Map;
30        return 0;
31#if !(defined CONFIG_ARM_HYPERVISOR_SUPPORT && defined CONFIG_ARM_PA_SIZE_BITS_40)
32    case SEL4_MAPPING_LOOKUP_NO_PUD:
33        obj->size_bits = seL4_PUDBits;
34        obj->type = seL4_ARM_PageUpperDirectoryObject;
35        obj->map_fn = seL4_ARM_PageUpperDirectory_Map;
36        return 0;
37#endif
38    default:
39        return EINVAL;
40    }
41}
42