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
38void math_emulate(struct math_emu_info *);
39
40bool fault_in_kernel_space(unsigned long address);
41
42#ifdef CONFIG_VMAP_STACK
43void __noreturn handle_stack_overflow(struct pt_regs *regs,
44 unsigned long fault_address,
45 struct stack_info *info);
46#endif
47
48static inline void cond_local_irq_enable(struct pt_regs *regs)
49{
50 if (regs->flags & X86_EFLAGS_IF)
51 local_irq_enable();
52}
53
54static inline void cond_local_irq_disable(struct pt_regs *regs)
55{
56 if (regs->flags & X86_EFLAGS_IF)
57 local_irq_disable();
58}
59
60#endif /* _ASM_X86_TRAPS_H */
61