| 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 |