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 void __init trap_init(void); 18 asmlinkage __visible noinstr struct pt_regs *vc_switch_off_ist(struct pt_regs *eregs); 19 #endif 20 21 extern int ibt_selftest(void); 22 extern int ibt_selftest_noendbr(void); 23 24 #ifdef CONFIG_X86_F00F_BUG 25 /* For handling the FOOF bug */ 26 void handle_invalid_op(struct pt_regs *regs); 27 #endif 28 29 static inline int get_si_code(unsigned long condition) 30 { 31 if (condition & DR_STEP) 32 return TRAP_TRACE; 33 else if (condition & (DR_TRAP0|DR_TRAP1|DR_TRAP2|DR_TRAP3)) 34 return TRAP_HWBKPT; 35 else 36 return TRAP_BRKPT; 37 } 38 39 extern int panic_on_unrecovered_nmi; 40 41 void math_emulate(struct math_emu_info *); 42 43 bool fault_in_kernel_space(unsigned long address); 44 45 #ifdef CONFIG_VMAP_STACK 46 void __noreturn handle_stack_overflow(struct pt_regs *regs, 47 unsigned long fault_address, 48 struct stack_info *info); 49 #endif 50 51 static inline void cond_local_irq_enable(struct pt_regs *regs) 52 { 53 if (regs->flags & X86_EFLAGS_IF) 54 local_irq_enable(); 55 } 56 57 static inline void cond_local_irq_disable(struct pt_regs *regs) 58 { 59 if (regs->flags & X86_EFLAGS_IF) 60 local_irq_disable(); 61 } 62 63 #endif /* _ASM_X86_TRAPS_H */ 64