top 205 user/usertests.c uint64 top = (uint64) sbrk(0); top 206 user/usertests.c if((top % PGSIZE) != 0){ top 207 user/usertests.c sbrk(PGSIZE - (top % PGSIZE)); top 209 user/usertests.c top = (uint64) sbrk(0); top 210 user/usertests.c if(top % PGSIZE){ top 215 user/usertests.c char *b = (char *) (top - 1); top 2540 user/usertests.c uint64 top = (uint64) sbrk(0); top 2541 user/usertests.c if((top % PGSIZE) != 0) top 2542 user/usertests.c sbrk(PGSIZE - (top % PGSIZE)); top 2546 user/usertests.c top = (uint64) sbrk(0); top 2547 user/usertests.c char *p = (char *) (top - 64); top 2567 user/usertests.c volatile char *top = sbrk(0); top 2568 user/usertests.c *(top-1) = *(top-1) + 1;