trap.h

来自「jos lab3代码」· C头文件 代码 · 共 30 行

/* See COPYRIGHT for copyright information. */

#ifndef JOS_KERN_TRAP_H
#define JOS_KERN_TRAP_H
#ifndef JOS_KERNEL
# error "This is a JOS kernel header; user programs should not #include it"
#endif

#include <inc/trap.h>
#include <inc/mmu.h>
// add 
#define PFM_NONE    0    // No page faults expected: must be

                // a kernel bug. On fault, panic.

#define PFM_KILL    1    // On fault, kill user process.

// end add
extern int page_fault_mode;
/* The kernel's interrupt descriptor table */
extern struct Gatedesc idt[];

void idt_init(void);
void print_regs(struct PushRegs *regs);
void print_trapframe(struct Trapframe *tf);
void page_fault_handler(struct Trapframe *);
void backtrace(struct Trapframe *);

#endif /* JOS_KERN_TRAP_H */