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clear_pte_u -> clearpteu

This commit is contained in:
Austin Clements 2011-09-02 14:37:04 -04:00
parent 91aa0f3296
commit 2eb214c9db
3 changed files with 4 additions and 4 deletions
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2
defs.h
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@ -176,7 +176,7 @@ pde_t* copyuvm(pde_t*, uint);
void switchuvm(struct proc*);
void switchkvm(void);
int copyout(pde_t*, uint, void*, uint);
void clear_pte_u(pde_t *pgdir, char *uva);
void clearpteu(pde_t *pgdir, char *uva);
// number of elements in fixed-size array
#define NELEM(x) (sizeof(x)/sizeof((x)[0]))

2
exec.c
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@ -55,7 +55,7 @@ exec(char *path, char **argv)
sz = PGROUNDUP(sz);
if((sz = allocuvm(pgdir, sz, sz + 2*PGSIZE)) == 0)
goto bad;
clear_pte_u(pgdir, (char*)(sz-2*PGSIZE));
clearpteu(pgdir, (char*)(sz - 2*PGSIZE));
sp = sz;
// Push argument strings, prepare rest of stack in ustack.

4
vm.c
View File

@ -292,13 +292,13 @@ freevm(pde_t *pgdir)
// Clear PTE_U on a page. Used to create an inaccessible
// page beneath the user stack.
void
clear_pte_u(pde_t *pgdir, char *uva)
clearpteu(pde_t *pgdir, char *uva)
{
pte_t *pte;
pte = walkpgdir(pgdir, uva, 0);
if(pte == 0)
panic("clear_pte_u");
panic("clearpteu");
*pte &= ~PTE_U;
}