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1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_X86_TRAPS_H
3 #define _ASM_X86_TRAPS_H
5 #include <linux/context_tracking_state.h>
6 #include <linux/kprobes.h>
8 #include <asm/debugreg.h>
9 #include <asm/siginfo.h> /* TRAP_TRACE, ... */
11 #define dotraplinkage __visible
13 asmlinkage
void divide_error(void);
14 asmlinkage
void debug(void);
15 asmlinkage
void nmi(void);
16 asmlinkage
void int3(void);
17 asmlinkage
void overflow(void);
18 asmlinkage
void bounds(void);
19 asmlinkage
void invalid_op(void);
20 asmlinkage
void device_not_available(void);
22 asmlinkage
void double_fault(void);
24 asmlinkage
void coprocessor_segment_overrun(void);
25 asmlinkage
void invalid_TSS(void);
26 asmlinkage
void segment_not_present(void);
27 asmlinkage
void stack_segment(void);
28 asmlinkage
void general_protection(void);
29 asmlinkage
void page_fault(void);
30 asmlinkage
void async_page_fault(void);
31 asmlinkage
void spurious_interrupt_bug(void);
32 asmlinkage
void coprocessor_error(void);
33 asmlinkage
void alignment_check(void);
35 asmlinkage
void machine_check(void);
36 #endif /* CONFIG_X86_MCE */
37 asmlinkage
void simd_coprocessor_error(void);
39 #if defined(CONFIG_X86_64) && defined(CONFIG_XEN_PV)
40 asmlinkage
void xen_divide_error(void);
41 asmlinkage
void xen_xennmi(void);
42 asmlinkage
void xen_xendebug(void);
43 asmlinkage
void xen_xenint3(void);
44 asmlinkage
void xen_overflow(void);
45 asmlinkage
void xen_bounds(void);
46 asmlinkage
void xen_invalid_op(void);
47 asmlinkage
void xen_device_not_available(void);
48 asmlinkage
void xen_double_fault(void);
49 asmlinkage
void xen_coprocessor_segment_overrun(void);
50 asmlinkage
void xen_invalid_TSS(void);
51 asmlinkage
void xen_segment_not_present(void);
52 asmlinkage
void xen_stack_segment(void);
53 asmlinkage
void xen_general_protection(void);
54 asmlinkage
void xen_page_fault(void);
55 asmlinkage
void xen_spurious_interrupt_bug(void);
56 asmlinkage
void xen_coprocessor_error(void);
57 asmlinkage
void xen_alignment_check(void);
59 asmlinkage
void xen_machine_check(void);
60 #endif /* CONFIG_X86_MCE */
61 asmlinkage
void xen_simd_coprocessor_error(void);
64 dotraplinkage
void do_divide_error(struct pt_regs
*, long);
65 dotraplinkage
void do_debug(struct pt_regs
*, long);
66 dotraplinkage
void do_nmi(struct pt_regs
*, long);
67 dotraplinkage
void do_int3(struct pt_regs
*, long);
68 dotraplinkage
void do_overflow(struct pt_regs
*, long);
69 dotraplinkage
void do_bounds(struct pt_regs
*, long);
70 dotraplinkage
void do_invalid_op(struct pt_regs
*, long);
71 dotraplinkage
void do_device_not_available(struct pt_regs
*, long);
72 dotraplinkage
void do_coprocessor_segment_overrun(struct pt_regs
*, long);
73 dotraplinkage
void do_invalid_TSS(struct pt_regs
*, long);
74 dotraplinkage
void do_segment_not_present(struct pt_regs
*, long);
75 dotraplinkage
void do_stack_segment(struct pt_regs
*, long);
77 dotraplinkage
void do_double_fault(struct pt_regs
*, long);
78 asmlinkage
struct pt_regs
*sync_regs(struct pt_regs
*);
80 dotraplinkage
void do_general_protection(struct pt_regs
*, long);
81 dotraplinkage
void do_page_fault(struct pt_regs
*, unsigned long);
82 dotraplinkage
void do_spurious_interrupt_bug(struct pt_regs
*, long);
83 dotraplinkage
void do_coprocessor_error(struct pt_regs
*, long);
84 dotraplinkage
void do_alignment_check(struct pt_regs
*, long);
86 dotraplinkage
void do_machine_check(struct pt_regs
*, long);
88 dotraplinkage
void do_simd_coprocessor_error(struct pt_regs
*, long);
90 dotraplinkage
void do_iret_error(struct pt_regs
*, long);
93 static inline int get_si_code(unsigned long condition
)
95 if (condition
& DR_STEP
)
97 else if (condition
& (DR_TRAP0
|DR_TRAP1
|DR_TRAP2
|DR_TRAP3
))
103 extern int panic_on_unrecovered_nmi
;
105 void math_emulate(struct math_emu_info
*);
106 #ifndef CONFIG_X86_32
107 asmlinkage
void smp_thermal_interrupt(void);
108 asmlinkage
void smp_threshold_interrupt(void);
109 asmlinkage
void smp_deferred_error_interrupt(void);
112 extern void ist_enter(struct pt_regs
*regs
);
113 extern void ist_exit(struct pt_regs
*regs
);
114 extern void ist_begin_non_atomic(struct pt_regs
*regs
);
115 extern void ist_end_non_atomic(void);
117 #ifdef CONFIG_VMAP_STACK
118 void __noreturn
handle_stack_overflow(const char *message
,
119 struct pt_regs
*regs
,
120 unsigned long fault_address
);
123 /* Interrupts/Exceptions */
125 X86_TRAP_DE
= 0, /* 0, Divide-by-zero */
126 X86_TRAP_DB
, /* 1, Debug */
127 X86_TRAP_NMI
, /* 2, Non-maskable Interrupt */
128 X86_TRAP_BP
, /* 3, Breakpoint */
129 X86_TRAP_OF
, /* 4, Overflow */
130 X86_TRAP_BR
, /* 5, Bound Range Exceeded */
131 X86_TRAP_UD
, /* 6, Invalid Opcode */
132 X86_TRAP_NM
, /* 7, Device Not Available */
133 X86_TRAP_DF
, /* 8, Double Fault */
134 X86_TRAP_OLD_MF
, /* 9, Coprocessor Segment Overrun */
135 X86_TRAP_TS
, /* 10, Invalid TSS */
136 X86_TRAP_NP
, /* 11, Segment Not Present */
137 X86_TRAP_SS
, /* 12, Stack Segment Fault */
138 X86_TRAP_GP
, /* 13, General Protection Fault */
139 X86_TRAP_PF
, /* 14, Page Fault */
140 X86_TRAP_SPURIOUS
, /* 15, Spurious Interrupt */
141 X86_TRAP_MF
, /* 16, x87 Floating-Point Exception */
142 X86_TRAP_AC
, /* 17, Alignment Check */
143 X86_TRAP_MC
, /* 18, Machine Check */
144 X86_TRAP_XF
, /* 19, SIMD Floating-Point Exception */
145 X86_TRAP_IRET
= 32, /* 32, IRET Exception */
149 * Page fault error code bits:
151 * bit 0 == 0: no page found 1: protection fault
152 * bit 1 == 0: read access 1: write access
153 * bit 2 == 0: kernel-mode access 1: user-mode access
154 * bit 3 == 1: use of reserved bit detected
155 * bit 4 == 1: fault was an instruction fetch
156 * bit 5 == 1: protection keys block access
158 enum x86_pf_error_code
{
159 X86_PF_PROT
= 1 << 0,
160 X86_PF_WRITE
= 1 << 1,
161 X86_PF_USER
= 1 << 2,
162 X86_PF_RSVD
= 1 << 3,
163 X86_PF_INSTR
= 1 << 4,
166 #endif /* _ASM_X86_TRAPS_H */