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 mce_threshold_interrupt(void);
112#endif
113
114extern enum ctx_state ist_enter(struct pt_regs *regs);
115extern void ist_exit(struct pt_regs *regs, enum ctx_state prev_state);
116extern void ist_begin_non_atomic(struct pt_regs *regs);
117extern void ist_end_non_atomic(void);
118
119/* Interrupts/Exceptions */
120enum {
121	X86_TRAP_DE = 0,	/*  0, Divide-by-zero */
122	X86_TRAP_DB,		/*  1, Debug */
123	X86_TRAP_NMI,		/*  2, Non-maskable Interrupt */
124	X86_TRAP_BP,		/*  3, Breakpoint */
125	X86_TRAP_OF,		/*  4, Overflow */
126	X86_TRAP_BR,		/*  5, Bound Range Exceeded */
127	X86_TRAP_UD,		/*  6, Invalid Opcode */
128	X86_TRAP_NM,		/*  7, Device Not Available */
129	X86_TRAP_DF,		/*  8, Double Fault */
130	X86_TRAP_OLD_MF,	/*  9, Coprocessor Segment Overrun */
131	X86_TRAP_TS,		/* 10, Invalid TSS */
132	X86_TRAP_NP,		/* 11, Segment Not Present */
133	X86_TRAP_SS,		/* 12, Stack Segment Fault */
134	X86_TRAP_GP,		/* 13, General Protection Fault */
135	X86_TRAP_PF,		/* 14, Page Fault */
136	X86_TRAP_SPURIOUS,	/* 15, Spurious Interrupt */
137	X86_TRAP_MF,		/* 16, x87 Floating-Point Exception */
138	X86_TRAP_AC,		/* 17, Alignment Check */
139	X86_TRAP_MC,		/* 18, Machine Check */
140	X86_TRAP_XF,		/* 19, SIMD Floating-Point Exception */
141	X86_TRAP_IRET = 32,	/* 32, IRET Exception */
142};
143
144#endif /* _ASM_X86_TRAPS_H */
145