jos/user/faultevilhandler.c

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2018-10-06 06:52:47 -07:00
// test evil pointer for user-level fault handler
#include <inc/lib.h>
void
umain(int argc, char **argv)
{
sys_page_alloc(0, (void*) (UXSTACKTOP - PGSIZE), PTE_P|PTE_U|PTE_W);
sys_env_set_pgfault_upcall(0, (void*) 0xF0100020);
*(int*)0 = 0;
}