1/* 2 * linux/arch/i386/mm/extable.c 3 */ 4 5#include <linux/module.h> 6#include <linux/spinlock.h> 7#include <asm/uaccess.h> 8 9int fixup_exception(struct pt_regs *regs) 10{ 11 const struct exception_table_entry *fixup; 12 13#ifdef CONFIG_PNPBIOS 14 if (unlikely(SEGMENT_IS_PNP_CODE(regs->xcs))) 15 { 16 extern u32 pnp_bios_fault_eip, pnp_bios_fault_esp; 17 extern u32 pnp_bios_is_utter_crap; 18 pnp_bios_is_utter_crap = 1; 19 printk(KERN_CRIT "PNPBIOS fault.. attempting recovery.\n"); 20 __asm__ volatile( 21 "movl %0, %%esp\n\t" 22 "jmp *%1\n\t" 23 : : "g" (pnp_bios_fault_esp), "g" (pnp_bios_fault_eip)); 24 panic("do_trap: can't hit this"); 25 } 26#endif 27 28 fixup = search_exception_tables(regs->eip); 29 if (fixup) { 30 regs->eip = fixup->fixup; 31 return 1; 32 } 33 34 return 0; 35} 36