LXR linux/arch/x86/include/asm/traps.h

   1#ifndef _ASM_X86_TRAPS_H
   2#define _ASM_X86_TRAPS_H
   3
   4#include <linux/context_tracking_state.h>
   5#include <linux/kprobes.h>
   6
   7#include <asm/debugreg.h>
   8#include <asm/siginfo.h>                        /* TRAP_TRACE, ... */
   9
  10#define dotraplinkage __visible
  11
  12asmlinkage void divide_error(void);
  13asmlinkage void debug(void);
  14asmlinkage void nmi(void);
  15asmlinkage void int3(void);
  16asmlinkage void xen_debug(void);
  17asmlinkage void xen_int3(void);
  18asmlinkage void xen_stack_segment(void);
  19asmlinkage void overflow(void);
  20asmlinkage void bounds(void);
  21asmlinkage void invalid_op(void);
  22asmlinkage void device_not_available(void);
  23#ifdef CONFIG_X86_64
  24asmlinkage void double_fault(void);
  25#endif
  26asmlinkage void coprocessor_segment_overrun(void);
  27asmlinkage void invalid_TSS(void);
  28asmlinkage void segment_not_present(void);
  29asmlinkage void stack_segment(void);
  30asmlinkage void general_protection(void);
  31asmlinkage void page_fault(void);
  32asmlinkage void async_page_fault(void);
  33asmlinkage void spurious_interrupt_bug(void);
  34asmlinkage void coprocessor_error(void);
  35asmlinkage void alignment_check(void);
  36#ifdef CONFIG_X86_MCE
  37asmlinkage void machine_check(void);
  38#endif /* CONFIG_X86_MCE */
  39asmlinkage void simd_coprocessor_error(void);
  40
  41#ifdef CONFIG_TRACING
  42asmlinkage void trace_page_fault(void);
  43#define trace_stack_segment stack_segment
  44#define trace_divide_error divide_error
  45#define trace_bounds bounds
  46#define trace_invalid_op invalid_op
  47#define trace_device_not_available device_not_available
  48#define trace_coprocessor_segment_overrun coprocessor_segment_overrun
  49#define trace_invalid_TSS invalid_TSS
  50#define trace_segment_not_present segment_not_present
  51#define trace_general_protection general_protection
  52#define trace_spurious_interrupt_bug spurious_interrupt_bug
  53#define trace_coprocessor_error coprocessor_error
  54#define trace_alignment_check alignment_check
  55#define trace_simd_coprocessor_error simd_coprocessor_error
  56#define trace_async_page_fault async_page_fault
  57#endif
  58
  59dotraplinkage void do_divide_error(struct pt_regs *, long);
  60dotraplinkage void do_debug(struct pt_regs *, long);
  61dotraplinkage void do_nmi(struct pt_regs *, long);
  62dotraplinkage void do_int3(struct pt_regs *, long);
  63dotraplinkage void do_overflow(struct pt_regs *, long);
  64dotraplinkage void do_bounds(struct pt_regs *, long);
  65dotraplinkage void do_invalid_op(struct pt_regs *, long);
  66dotraplinkage void do_device_not_available(struct pt_regs *, long);
  67dotraplinkage void do_coprocessor_segment_overrun(struct pt_regs *, long);
  68dotraplinkage void do_invalid_TSS(struct pt_regs *, long);
  69dotraplinkage void do_segment_not_present(struct pt_regs *, long);
  70dotraplinkage void do_stack_segment(struct pt_regs *, long);
  71#ifdef CONFIG_X86_64
  72dotraplinkage void do_double_fault(struct pt_regs *, long);
  73asmlinkage struct pt_regs *sync_regs(struct pt_regs *);
  74#endif
  75dotraplinkage void do_general_protection(struct pt_regs *, long);
  76dotraplinkage void do_page_fault(struct pt_regs *, unsigned long);
  77#ifdef CONFIG_TRACING
  78dotraplinkage void trace_do_page_fault(struct pt_regs *, unsigned long);
  79#else
  80static inline void trace_do_page_fault(struct pt_regs *regs, unsigned long error)
  81{
  82        do_page_fault(regs, error);
  83}
  84#endif
  85dotraplinkage void do_spurious_interrupt_bug(struct pt_regs *, long);
  86dotraplinkage void do_coprocessor_error(struct pt_regs *, long);
  87dotraplinkage void do_alignment_check(struct pt_regs *, long);
  88#ifdef CONFIG_X86_MCE
  89dotraplinkage void do_machine_check(struct pt_regs *, long);
  90#endif
  91dotraplinkage void do_simd_coprocessor_error(struct pt_regs *, long);
  92#ifdef CONFIG_X86_32
  93dotraplinkage void do_iret_error(struct pt_regs *, long);
  94#endif
  95
  96static inline int get_si_code(unsigned long condition)
  97{
  98        if (condition & DR_STEP)
  99                return TRAP_TRACE;
 100        else if (condition & (DR_TRAP0|DR_TRAP1|DR_TRAP2|DR_TRAP3))
 101                return TRAP_HWBKPT;
 102        else
 103                return TRAP_BRKPT;
 104}
 105
 106extern int panic_on_unrecovered_nmi;
 107
 108void math_emulate(struct math_emu_info *);
 109#ifndef CONFIG_X86_32
 110asmlinkage void smp_thermal_interrupt(void);
 111asmlinkage void smp_threshold_interrupt(void);
 112asmlinkage void smp_deferred_error_interrupt(void);
 113#endif
 114
 115extern void ist_enter(struct pt_regs *regs);
 116extern void ist_exit(struct pt_regs *regs);
 117extern void ist_begin_non_atomic(struct pt_regs *regs);
 118extern void ist_end_non_atomic(void);
 119
 120#ifdef CONFIG_VMAP_STACK
 121void __noreturn handle_stack_overflow(const char *message,
 122                                      struct pt_regs *regs,
 123                                      unsigned long fault_address);
 124#endif
 125
 126/* Interrupts/Exceptions */
 127enum {
 128        X86_TRAP_DE = 0,        /*  0, Divide-by-zero */
 129        X86_TRAP_DB,            /*  1, Debug */
 130        X86_TRAP_NMI,           /*  2, Non-maskable Interrupt */
 131        X86_TRAP_BP,            /*  3, Breakpoint */
 132        X86_TRAP_OF,            /*  4, Overflow */
 133        X86_TRAP_BR,            /*  5, Bound Range Exceeded */
 134        X86_TRAP_UD,            /*  6, Invalid Opcode */
 135        X86_TRAP_NM,            /*  7, Device Not Available */
 136        X86_TRAP_DF,            /*  8, Double Fault */
 137        X86_TRAP_OLD_MF,        /*  9, Coprocessor Segment Overrun */
 138        X86_TRAP_TS,            /* 10, Invalid TSS */
 139        X86_TRAP_NP,            /* 11, Segment Not Present */
 140        X86_TRAP_SS,            /* 12, Stack Segment Fault */
 141        X86_TRAP_GP,            /* 13, General Protection Fault */
 142        X86_TRAP_PF,            /* 14, Page Fault */
 143        X86_TRAP_SPURIOUS,      /* 15, Spurious Interrupt */
 144        X86_TRAP_MF,            /* 16, x87 Floating-Point Exception */
 145        X86_TRAP_AC,            /* 17, Alignment Check */
 146        X86_TRAP_MC,            /* 18, Machine Check */
 147        X86_TRAP_XF,            /* 19, SIMD Floating-Point Exception */
 148        X86_TRAP_IRET = 32,     /* 32, IRET Exception */
 149};
 150
 151#endif /* _ASM_X86_TRAPS_H */
 152