63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_TRAPS_H
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#define _ASM_X86_TRAPS_H
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#include <linux/context_tracking_state.h>
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#include <linux/kprobes.h>
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#include <asm/debugreg.h>
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#include <asm/idtentry.h>
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#include <asm/siginfo.h> /* TRAP_TRACE, ... */
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#ifdef CONFIG_X86_64
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asmlinkage __visible notrace struct pt_regs *sync_regs(struct pt_regs *eregs);
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asmlinkage __visible notrace
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struct bad_iret_stack *fixup_bad_iret(struct bad_iret_stack *s);
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void __init trap_init(void);
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#endif
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#ifdef CONFIG_X86_F00F_BUG
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/* For handling the FOOF bug */
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void handle_invalid_op(struct pt_regs *regs);
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#endif
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static inline int get_si_code(unsigned long condition)
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{
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if (condition & DR_STEP)
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return TRAP_TRACE;
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else if (condition & (DR_TRAP0|DR_TRAP1|DR_TRAP2|DR_TRAP3))
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return TRAP_HWBKPT;
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else
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return TRAP_BRKPT;
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}
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extern int panic_on_unrecovered_nmi;
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void math_emulate(struct math_emu_info *);
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#ifdef CONFIG_VMAP_STACK
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void __noreturn handle_stack_overflow(const char *message,
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struct pt_regs *regs,
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unsigned long fault_address);
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#endif
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/*
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* Page fault error code bits:
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*
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* bit 0 == 0: no page found 1: protection fault
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* bit 1 == 0: read access 1: write access
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* bit 2 == 0: kernel-mode access 1: user-mode access
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* bit 3 == 1: use of reserved bit detected
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* bit 4 == 1: fault was an instruction fetch
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* bit 5 == 1: protection keys block access
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*/
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enum x86_pf_error_code {
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X86_PF_PROT = 1 << 0,
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X86_PF_WRITE = 1 << 1,
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X86_PF_USER = 1 << 2,
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X86_PF_RSVD = 1 << 3,
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X86_PF_INSTR = 1 << 4,
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X86_PF_PK = 1 << 5,
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};
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#endif /* _ASM_X86_TRAPS_H */
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