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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/* Interrupts/Exceptions */
121enum {
122 X86_TRAP_DE = 0, /* 0, Divide-by-zero */
123 X86_TRAP_DB, /* 1, Debug */
124 X86_TRAP_NMI, /* 2, Non-maskable Interrupt */
125 X86_TRAP_BP, /* 3, Breakpoint */
126 X86_TRAP_OF, /* 4, Overflow */
127 X86_TRAP_BR, /* 5, Bound Range Exceeded */
128 X86_TRAP_UD, /* 6, Invalid Opcode */
129 X86_TRAP_NM, /* 7, Device Not Available */
130 X86_TRAP_DF, /* 8, Double Fault */
131 X86_TRAP_OLD_MF, /* 9, Coprocessor Segment Overrun */
132 X86_TRAP_TS, /* 10, Invalid TSS */
133 X86_TRAP_NP, /* 11, Segment Not Present */
134 X86_TRAP_SS, /* 12, Stack Segment Fault */
135 X86_TRAP_GP, /* 13, General Protection Fault */
136 X86_TRAP_PF, /* 14, Page Fault */
137 X86_TRAP_SPURIOUS, /* 15, Spurious Interrupt */
138 X86_TRAP_MF, /* 16, x87 Floating-Point Exception */
139 X86_TRAP_AC, /* 17, Alignment Check */
140 X86_TRAP_MC, /* 18, Machine Check */
141 X86_TRAP_XF, /* 19, SIMD Floating-Point Exception */
142 X86_TRAP_IRET = 32, /* 32, IRET Exception */
143};
144
145#endif /* _ASM_X86_TRAPS_H */
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_X86_TRAPS_H
3#define _ASM_X86_TRAPS_H
4
5#include <linux/context_tracking_state.h>
6#include <linux/kprobes.h>
7
8#include <asm/debugreg.h>
9#include <asm/idtentry.h>
10#include <asm/siginfo.h> /* TRAP_TRACE, ... */
11#include <asm/trap_pf.h>
12
13#ifdef CONFIG_X86_64
14asmlinkage __visible notrace struct pt_regs *sync_regs(struct pt_regs *eregs);
15asmlinkage __visible notrace
16struct pt_regs *fixup_bad_iret(struct pt_regs *bad_regs);
17asmlinkage __visible noinstr struct pt_regs *vc_switch_off_ist(struct pt_regs *eregs);
18#endif
19
20extern int ibt_selftest(void);
21extern int ibt_selftest_noendbr(void);
22
23#ifdef CONFIG_X86_F00F_BUG
24/* For handling the FOOF bug */
25void handle_invalid_op(struct pt_regs *regs);
26#endif
27
28static inline int get_si_code(unsigned long condition)
29{
30 if (condition & DR_STEP)
31 return TRAP_TRACE;
32 else if (condition & (DR_TRAP0|DR_TRAP1|DR_TRAP2|DR_TRAP3))
33 return TRAP_HWBKPT;
34 else
35 return TRAP_BRKPT;
36}
37
38extern int panic_on_unrecovered_nmi;
39
40void math_emulate(struct math_emu_info *);
41
42bool fault_in_kernel_space(unsigned long address);
43
44#ifdef CONFIG_VMAP_STACK
45void __noreturn handle_stack_overflow(struct pt_regs *regs,
46 unsigned long fault_address,
47 struct stack_info *info);
48#endif
49
50static inline void cond_local_irq_enable(struct pt_regs *regs)
51{
52 if (regs->flags & X86_EFLAGS_IF)
53 local_irq_enable();
54}
55
56static inline void cond_local_irq_disable(struct pt_regs *regs)
57{
58 if (regs->flags & X86_EFLAGS_IF)
59 local_irq_disable();
60}
61
62#endif /* _ASM_X86_TRAPS_H */