1 #include <stdio.h>

2 #include <string.h>

3 #include <stdarg.h>

4 #include "asmops.h"

5 #include "proc.h"

6

7 struct all_registers {

8 uint32_t eax, ebx, ecx, edx;

9 uint32_t esp, ebp, esi, edi;

10 uint32_t eflags;

11 uint32_t cs, ss, ds, es, fs, gs;

12 uint32_t cr0, cr1, cr2, cr3;

13 };

14

15 /* defined in regs.S */

16 void get_regs(struct all_registers *regs);

17

18 void panic(const char *fmt, ...)

19 {

20 va_list ap;

21 struct all_registers regs;

22 uint32_t eip;

23

24 disable_intr();

25

26 memset(&regs, 0, sizeof regs);

27 get_regs(&regs);

28

29 eip = get_caller_instr_ptr();

30

31 printf("~~~~~ kernel panic ~~~~~\n");

32 va_start(ap, fmt);

33 vprintf(fmt, ap);

34 va_end(ap);

35

36 printf("\nRegisters:\n");

37 printf("eax: %x, ebx: %x, ecx: %x, edx: %x\n", regs.eax, regs.ebx, regs.ecx, regs.edx);

38 printf("esp: %x, ebp: %x, esi: %x, edi: %x\n", regs.esp, regs.ebp, regs.esi, regs.edi);

39 printf("eip: %x, eflags: %x\n", eip, regs.eflags);

40 printf("cr0: %x, cr1: %x, cr2: %x, cr3: %x\n", regs.cr0, regs.cr1, regs.cr2, regs.cr3);

41 printf("cs: %x (%d|%d)\n", regs.cs, regs.cs >> 3, regs.cs & 3);

42 printf("ss: %x (%d|%d)\n", regs.ss, regs.ss >> 3, regs.ss & 3);

43 printf("ds: %x (%d|%d)\n", regs.ds, regs.ds >> 3, regs.ds & 3);

44 printf("es: %x (%d|%d)\n", regs.es, regs.es >> 3, regs.es & 3);

45 printf("fs: %x (%d|%d)\n", regs.fs, regs.fs >> 3, regs.fs & 3);

46 printf("gs: %x (%d|%d)\n", regs.gs, regs.gs >> 3, regs.gs & 3);

47

48 halt_cpu();

49 }