Imbus/xv6-riscv-kernel
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fix corner cases in exec of ELF

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put an invalid page below the stack
have fork() handle invalid pages
This commit is contained in:
Robert Morris 2010-08-06 11:12:18 -04:00
parent 1afc9d3fca
commit c4cc10da7e
8 changed files with 84 additions and 37 deletions
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mmu.h
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@ -129,7 +129,6 @@ struct segdesc {
#define PTE_ADDR(pte) ((uint) (pte) & ~0xFFF)
typedef uint pte_t;
extern pde_t *kpgdir;
// Control Register flags
#define CR0_PE 0x00000001 // Protection Enable