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| 54 | * use a trick: First read a seconds, then read microseconds, then |
54 | * use a trick: First read a seconds, then read microseconds, then |
| 55 | * read seconds again. If a second elapsed in the meantime, read |
55 | * read seconds again. If a second elapsed in the meantime, read |
| 56 | * useconds again. This provides assurance, that at least the |
56 | * useconds again. This provides assurance, that at least the |
| 57 | * sequence of subsequent gettimeofday calls is ordered. |
57 | * sequence of subsequent gettimeofday calls is ordered. |
| 58 | */ |
58 | */ |
| 59 | #define TMAREA (100*1024*1024) |
- | |
| 60 | int gettimeofday(struct timeval *tv, struct timezone *tz) |
59 | int gettimeofday(struct timeval *tv, struct timezone *tz) |
| 61 | { |
60 | { |
| 62 | void *mapping; |
61 | void *mapping; |
| 63 | sysarg_t s1, s2; |
62 | sysarg_t s1, s2; |
| 64 | sysarg_t rights; |
63 | sysarg_t rights; |
| 65 | int res; |
64 | int res; |
| 66 | 65 | ||
| 67 | if (!ktime) { |
66 | if (!ktime) { |
| 68 | /* TODO: specify better, where to map the area */ |
67 | mapping = as_get_mappable_page(PAGE_SIZE); |
| 69 | /* Get the mapping of kernel clock */ |
68 | /* Get the mapping of kernel clock */ |
| 70 | res = ipc_call_sync_3(PHONE_NS, IPC_M_AS_AREA_RECV, |
69 | res = ipc_call_sync_3(PHONE_NS, IPC_M_AS_AREA_RECV, |
| 71 | TMAREA, |
- | |
| 72 | PAGE_SIZE, |
70 | mapping, PAGE_SIZE, 0, |
| 73 | 0, |
- | |
| 74 | NULL,&rights,NULL); |
71 | NULL,&rights,NULL); |
| 75 | if (res) { |
72 | if (res) { |
| 76 | printf("Failed to initialize timeofday memarea\n"); |
73 | printf("Failed to initialize timeofday memarea\n"); |
| 77 | _exit(1); |
74 | _exit(1); |
| 78 | } |
75 | } |
| 79 | if (rights != (AS_AREA_READ | AS_AREA_CACHEABLE)) { |
76 | if (rights != (AS_AREA_READ | AS_AREA_CACHEABLE)) { |
| 80 | printf("Received bad rights on time area: %X\n", |
77 | printf("Received bad rights on time area: %X\n", |
| 81 | rights); |
78 | rights); |
| 82 | as_area_destroy(TMAREA); |
79 | as_area_destroy(mapping); |
| 83 | _exit(1); |
80 | _exit(1); |
| 84 | } |
81 | } |
| 85 | ktime = (void *) (TMAREA); |
82 | ktime = mapping; |
| 86 | } |
83 | } |
| 87 | if (tz) { |
84 | if (tz) { |
| 88 | tz->tz_minuteswest = 0; |
85 | tz->tz_minuteswest = 0; |
| 89 | tz->tz_dsttime = DST_NONE; |
86 | tz->tz_dsttime = DST_NONE; |
| 90 | } |
87 | } |