top 202 user/usertests.c uint64 top = (uint64) sbrk(0); top 203 user/usertests.c if((top % PGSIZE) != 0){ top 204 user/usertests.c sbrk(PGSIZE - (top % PGSIZE)); top 206 user/usertests.c top = (uint64) sbrk(0); top 207 user/usertests.c if(top % PGSIZE){ top 212 user/usertests.c char *b = (char *) (top - 1); top 2526 user/usertests.c uint64 top = (uint64) sbrk(0); top 2527 user/usertests.c if((top % 4096) != 0) top 2528 user/usertests.c sbrk(4096 - (top % 4096)); top 2532 user/usertests.c top = (uint64) sbrk(0); top 2533 user/usertests.c char *p = (char *) (top - 64); top 2553 user/usertests.c volatile char *top = sbrk(0); top 2554 user/usertests.c *(top-1) = *(top-1) + 1;