Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...
[linux-2.6] / arch / x86 / mm / extable_32.c
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
9 int 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 }