mirror of https://gitee.com/openkylin/linux.git
37 lines
793 B
C
37 lines
793 B
C
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/*
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* linux/arch/i386/mm/extable.c
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*/
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#include <linux/config.h>
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#include <linux/module.h>
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#include <linux/spinlock.h>
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#include <asm/uaccess.h>
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int fixup_exception(struct pt_regs *regs)
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{
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const struct exception_table_entry *fixup;
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#ifdef CONFIG_PNPBIOS
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if (unlikely((regs->xcs & ~15) == (GDT_ENTRY_PNPBIOS_BASE << 3)))
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{
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extern u32 pnp_bios_fault_eip, pnp_bios_fault_esp;
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extern u32 pnp_bios_is_utter_crap;
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pnp_bios_is_utter_crap = 1;
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printk(KERN_CRIT "PNPBIOS fault.. attempting recovery.\n");
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__asm__ volatile(
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"movl %0, %%esp\n\t"
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"jmp *%1\n\t"
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: : "g" (pnp_bios_fault_esp), "g" (pnp_bios_fault_eip));
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panic("do_trap: can't hit this");
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}
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#endif
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fixup = search_exception_tables(regs->eip);
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if (fixup) {
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regs->eip = fixup->fixup;
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return 1;
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}
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return 0;
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}
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