root/arch/x86/include/asm/traps.h

DEFINITIONS

1. trace_do_page_fault
2. get_si_code

#ifndef _ASM_X86_TRAPS_H
#define _ASM_X86_TRAPS_H

#include <linux/kprobes.h>

#include <asm/debugreg.h>
#include <asm/siginfo.h>                        /* TRAP_TRACE, ... */

#define dotraplinkage __visible

asmlinkage void divide_error(void);
asmlinkage void debug(void);
asmlinkage void nmi(void);
asmlinkage void int3(void);
asmlinkage void xen_debug(void);
asmlinkage void xen_int3(void);
asmlinkage void xen_stack_segment(void);
asmlinkage void overflow(void);
asmlinkage void bounds(void);
asmlinkage void invalid_op(void);
asmlinkage void device_not_available(void);
#ifdef CONFIG_X86_64
asmlinkage void double_fault(void);
#endif
asmlinkage void coprocessor_segment_overrun(void);
asmlinkage void invalid_TSS(void);
asmlinkage void segment_not_present(void);
asmlinkage void stack_segment(void);
asmlinkage void general_protection(void);
asmlinkage void page_fault(void);
asmlinkage void async_page_fault(void);
asmlinkage void spurious_interrupt_bug(void);
asmlinkage void coprocessor_error(void);
asmlinkage void alignment_check(void);
#ifdef CONFIG_X86_MCE
asmlinkage void machine_check(void);
#endif /* CONFIG_X86_MCE */
asmlinkage void simd_coprocessor_error(void);

#ifdef CONFIG_TRACING
asmlinkage void trace_page_fault(void);
#define trace_stack_segment stack_segment
#define trace_divide_error divide_error
#define trace_bounds bounds
#define trace_invalid_op invalid_op
#define trace_device_not_available device_not_available
#define trace_coprocessor_segment_overrun coprocessor_segment_overrun
#define trace_invalid_TSS invalid_TSS
#define trace_segment_not_present segment_not_present
#define trace_general_protection general_protection
#define trace_spurious_interrupt_bug spurious_interrupt_bug
#define trace_coprocessor_error coprocessor_error
#define trace_alignment_check alignment_check
#define trace_simd_coprocessor_error simd_coprocessor_error
#define trace_async_page_fault async_page_fault
#endif

dotraplinkage void do_divide_error(struct pt_regs *, long);
dotraplinkage void do_debug(struct pt_regs *, long);
dotraplinkage void do_nmi(struct pt_regs *, long);
dotraplinkage void do_int3(struct pt_regs *, long);
dotraplinkage void do_overflow(struct pt_regs *, long);
dotraplinkage void do_bounds(struct pt_regs *, long);
dotraplinkage void do_invalid_op(struct pt_regs *, long);
dotraplinkage void do_device_not_available(struct pt_regs *, long);
dotraplinkage void do_coprocessor_segment_overrun(struct pt_regs *, long);
dotraplinkage void do_invalid_TSS(struct pt_regs *, long);
dotraplinkage void do_segment_not_present(struct pt_regs *, long);
dotraplinkage void do_stack_segment(struct pt_regs *, long);
#ifdef CONFIG_X86_64
dotraplinkage void do_double_fault(struct pt_regs *, long);
asmlinkage struct pt_regs *sync_regs(struct pt_regs *);
#endif
dotraplinkage void do_general_protection(struct pt_regs *, long);
dotraplinkage void do_page_fault(struct pt_regs *, unsigned long);
#ifdef CONFIG_TRACING
dotraplinkage void trace_do_page_fault(struct pt_regs *, unsigned long);
#else
static inline void trace_do_page_fault(struct pt_regs *regs, unsigned long error)
{
        do_page_fault(regs, error);
}
#endif
dotraplinkage void do_spurious_interrupt_bug(struct pt_regs *, long);
dotraplinkage void do_coprocessor_error(struct pt_regs *, long);
dotraplinkage void do_alignment_check(struct pt_regs *, long);
#ifdef CONFIG_X86_MCE
dotraplinkage void do_machine_check(struct pt_regs *, long);
#endif
dotraplinkage void do_simd_coprocessor_error(struct pt_regs *, long);
#ifdef CONFIG_X86_32
dotraplinkage void do_iret_error(struct pt_regs *, long);
#endif

static inline int get_si_code(unsigned long condition)
{
        if (condition & DR_STEP)
                return TRAP_TRACE;
        else if (condition & (DR_TRAP0|DR_TRAP1|DR_TRAP2|DR_TRAP3))
                return TRAP_HWBKPT;
        else
                return TRAP_BRKPT;
}

extern int panic_on_unrecovered_nmi;

void math_emulate(struct math_emu_info *);
#ifndef CONFIG_X86_32
asmlinkage void smp_thermal_interrupt(void);
asmlinkage void mce_threshold_interrupt(void);
#endif

/* Interrupts/Exceptions */
enum {
        X86_TRAP_DE = 0,        /*  0, Divide-by-zero */
        X86_TRAP_DB,            /*  1, Debug */
        X86_TRAP_NMI,           /*  2, Non-maskable Interrupt */
        X86_TRAP_BP,            /*  3, Breakpoint */
        X86_TRAP_OF,            /*  4, Overflow */
        X86_TRAP_BR,            /*  5, Bound Range Exceeded */
        X86_TRAP_UD,            /*  6, Invalid Opcode */
        X86_TRAP_NM,            /*  7, Device Not Available */
        X86_TRAP_DF,            /*  8, Double Fault */
        X86_TRAP_OLD_MF,        /*  9, Coprocessor Segment Overrun */
        X86_TRAP_TS,            /* 10, Invalid TSS */
        X86_TRAP_NP,            /* 11, Segment Not Present */
        X86_TRAP_SS,            /* 12, Stack Segment Fault */
        X86_TRAP_GP,            /* 13, General Protection Fault */
        X86_TRAP_PF,            /* 14, Page Fault */
        X86_TRAP_SPURIOUS,      /* 15, Spurious Interrupt */
        X86_TRAP_MF,            /* 16, x87 Floating-Point Exception */
        X86_TRAP_AC,            /* 17, Alignment Check */
        X86_TRAP_MC,            /* 18, Machine Check */
        X86_TRAP_XF,            /* 19, SIMD Floating-Point Exception */
        X86_TRAP_IRET = 32,     /* 32, IRET Exception */
};

#endif /* _ASM_X86_TRAPS_H */