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