1 #include <stdio.h>

2 #include <string.h>

3 #include <stdarg.h>

4 #include "asmops.h"

5

6 struct registers {

7 uint32_t eax, ebx, ecx, edx;

8 uint32_t esp, ebp, esi, edi;

9 uint32_t eflags;

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

11 uint32_t cr0, cr1, cr2, cr3;

12 };

13

14 /* defined in regs.S */

15 void get_regs(struct registers *regs);

16

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

18 {

19 va_list ap;

20 struct registers regs;

21

22 disable_intr();

23

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

25 get_regs(&regs);

26

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

28 va_start(ap, fmt);

29 vprintf(fmt, ap);

30 va_end(ap);

31

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

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

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

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

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

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

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

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

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

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

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

43

44 halt_cpu();

45 }