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
14 asmlinkage __visible notrace struct pt_regs *sync_regs(struct pt_regs *eregs);
15 asmlinkage __visible notrace
16 struct pt_regs *fixup_bad_iret(struct pt_regs *bad_regs);
17 asmlinkage __visible noinstr struct pt_regs *vc_switch_off_ist(struct pt_regs *eregs);
18 #endif
19
20 extern int ibt_selftest(void);
21 extern int ibt_selftest_noendbr(void);
22
23 #ifdef CONFIG_X86_F00F_BUG
24 /* For handling the FOOF bug */
25 void handle_invalid_op(struct pt_regs *regs);
26 #endif
27
28 static 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
38 extern int panic_on_unrecovered_nmi;
39
40 void math_emulate(struct math_emu_info *);
41
42 bool fault_in_kernel_space(unsigned long address);
43
44 #ifdef CONFIG_VMAP_STACK
45 void __noreturn handle_stack_overflow(struct pt_regs *regs,
46 unsigned long fault_address,
47 struct stack_info *info);
48 #endif
49
50 static inline void cond_local_irq_enable(struct pt_regs *regs)
51 {
52 if (regs->flags & X86_EFLAGS_IF)
53 local_irq_enable();
54 }
55
56 static 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 */
63
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