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/* SPDX-License-Identifier: GPL-2.0 / #ifndef _ASM_X86_TRAPS_H #define _ASM_X86_TRAPS_H #include <linux/context_tracking_state.h> #include <linux/kprobes.h> #include <asm/debugreg.h> #include <asm/siginfo.h> / TRAP_TRACE, ... / #define dotraplinkage __visible asmlinkage void divide_error(void); asmlinkage void debug(void); asmlinkage void nmi(void); asmlinkage void int3(void); asmlinkage void overflow(void); asmlinkage void bounds(void); asmlinkage void invalid_op(void); asmlinkage void device_not_available(void); #ifdef CONFIG_X86_64 asmlinkage void double_fault(void); #endif asmlinkage void coprocessor_segment_overrun(void); asmlinkage void invalid_TSS(void); asmlinkage void segment_not_present(void); asmlinkage void stack_segment(void); asmlinkage void general_protection(void); asmlinkage void page_fault(void); asmlinkage void async_page_fault(void); asmlinkage void spurious_interrupt_bug(void); asmlinkage void coprocessor_error(void); asmlinkage void alignment_check(void); #ifdef CONFIG_X86_MCE asmlinkage void machine_check(void); #endif / CONFIG_X86_MCE / asmlinkage void simd_coprocessor_error(void); #if defined(CONFIG_X86_64) && defined(CONFIG_XEN_PV) asmlinkage void xen_divide_error(void); asmlinkage void xen_xennmi(void); asmlinkage void xen_xendebug(void); asmlinkage void xen_int3(void); asmlinkage void xen_overflow(void); asmlinkage void xen_bounds(void); asmlinkage void xen_invalid_op(void); asmlinkage void xen_device_not_available(void); asmlinkage void xen_double_fault(void); asmlinkage void xen_coprocessor_segment_overrun(void); asmlinkage void xen_invalid_TSS(void); asmlinkage void xen_segment_not_present(void); asmlinkage void xen_stack_segment(void); asmlinkage void xen_general_protection(void); asmlinkage void xen_page_fault(void); asmlinkage void xen_spurious_interrupt_bug(void); asmlinkage void xen_coprocessor_error(void); asmlinkage void xen_alignment_check(void); #ifdef CONFIG_X86_MCE asmlinkage void xen_machine_check(void); #endif / CONFIG_X86_MCE / asmlinkage void xen_simd_coprocessor_error(void); #endif dotraplinkage void do_divide_error(struct pt_regs regs, long error_code); dotraplinkage void do_debug(struct pt_regs regs, long error_code); dotraplinkage void do_nmi(struct pt_regs regs, long error_code); dotraplinkage void do_int3(struct pt_regs regs, long error_code); dotraplinkage void do_overflow(struct pt_regs regs, long error_code); dotraplinkage void do_bounds(struct pt_regs regs, long error_code); dotraplinkage void do_invalid_op(struct pt_regs regs, long error_code); dotraplinkage void do_device_not_available(struct pt_regs regs, long error_code); dotraplinkage void do_coprocessor_segment_overrun(struct pt_regs regs, long error_code); dotraplinkage void do_invalid_TSS(struct pt_regs regs, long error_code); dotraplinkage void do_segment_not_present(struct pt_regs regs, long error_code); dotraplinkage void do_stack_segment(struct pt_regs regs, long error_code); #ifdef CONFIG_X86_64 dotraplinkage void do_double_fault(struct pt_regs regs, long error_code, unsigned long address); asmlinkage __visible notrace struct pt_regs sync_regs(struct pt_regs eregs); asmlinkage __visible notrace struct bad_iret_stack fixup_bad_iret(struct bad_iret_stack s); void __init trap_init(void); #endif dotraplinkage void do_general_protection(struct pt_regs regs, long error_code); dotraplinkage void do_page_fault(struct pt_regs regs, unsigned long error_code, unsigned long address); dotraplinkage void do_spurious_interrupt_bug(struct pt_regs regs, long error_code); dotraplinkage void do_coprocessor_error(struct pt_regs regs, long error_code); dotraplinkage void do_alignment_check(struct pt_regs regs, long error_code); #ifdef CONFIG_X86_MCE dotraplinkage void do_machine_check(struct pt_regs regs, long error_code); #endif dotraplinkage void do_simd_coprocessor_error(struct pt_regs regs, long error_code); #ifdef CONFIG_X86_32 dotraplinkage void do_iret_error(struct pt_regs regs, long error_code); #endif dotraplinkage void do_mce(struct pt_regs regs, long error_code); static inline int get_si_code(unsigned long condition) { if (condition & DR_STEP) return TRAP_TRACE; else if (condition & (DR_TRAP0\|DR_TRAP1\|DR_TRAP2\|DR_TRAP3)) return TRAP_HWBKPT; else return TRAP_BRKPT; } extern int panic_on_unrecovered_nmi; void math_emulate(struct math_emu_info ); #ifndef CONFIG_X86_32 asmlinkage void smp_thermal_interrupt(struct pt_regs regs); asmlinkage void smp_threshold_interrupt(struct pt_regs regs); asmlinkage void smp_deferred_error_interrupt(struct pt_regs regs); #endif void smp_apic_timer_interrupt(struct pt_regs regs); void smp_spurious_interrupt(struct pt_regs regs); void smp_error_interrupt(struct pt_regs regs); asmlinkage void smp_irq_move_cleanup_interrupt(void); extern void ist_enter(struct pt_regs regs); extern void ist_exit(struct pt_regs regs); extern void ist_begin_non_atomic(struct pt_regs regs); extern void ist_end_non_atomic(void); #ifdef CONFIG_VMAP_STACK void __noreturn handle_stack_overflow(const char message, struct pt_regs regs, unsigned long fault_address); #endif / Interrupts/Exceptions / enum { X86_TRAP_DE = 0, / 0, Divide-by-zero / X86_TRAP_DB, / 1, Debug / X86_TRAP_NMI, / 2, Non-maskable Interrupt / X86_TRAP_BP, / 3, Breakpoint / X86_TRAP_OF, / 4, Overflow / X86_TRAP_BR, / 5, Bound Range Exceeded / X86_TRAP_UD, / 6, Invalid Opcode / X86_TRAP_NM, / 7, Device Not Available / X86_TRAP_DF, / 8, Double Fault / X86_TRAP_OLD_MF, / 9, Coprocessor Segment Overrun / X86_TRAP_TS, / 10, Invalid TSS / X86_TRAP_NP, / 11, Segment Not Present / X86_TRAP_SS, / 12, Stack Segment Fault / X86_TRAP_GP, / 13, General Protection Fault / X86_TRAP_PF, / 14, Page Fault / X86_TRAP_SPURIOUS, / 15, Spurious Interrupt / X86_TRAP_MF, / 16, x87 Floating-Point Exception / X86_TRAP_AC, / 17, Alignment Check / X86_TRAP_MC, / 18, Machine Check / X86_TRAP_XF, / 19, SIMD Floating-Point Exception / X86_TRAP_IRET = 32, / 32, IRET Exception / }; / * Page fault error code bits: * * bit 0 == 0: no page found 1: protection fault * bit 1 == 0: read access 1: write access * bit 2 == 0: kernel-mode access 1: user-mode access * bit 3 == 1: use of reserved bit detected * bit 4 == 1: fault was an instruction fetch * bit 5 == 1: protection keys block access / enum x86_pf_error_code { X86_PF_PROT = 1 << 0, X86_PF_WRITE = 1 << 1, X86_PF_USER = 1 << 2, X86_PF_RSVD = 1 << 3, X86_PF_INSTR = 1 << 4, X86_PF_PK = 1 << 5, }; #endif / _ASM_X86_TRAPS_H */

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