1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 21965aae3SH. Peter Anvin #ifndef _ASM_X86_TRAPS_H 31965aae3SH. Peter Anvin #define _ASM_X86_TRAPS_H 4bb898558SAl Viro 595927475SAndy Lutomirski #include <linux/context_tracking_state.h> 65cec93c2SAndy Lutomirski #include <linux/kprobes.h> 75cec93c2SAndy Lutomirski 8bb898558SAl Viro #include <asm/debugreg.h> 9a2bcd473SIngo Molnar #include <asm/siginfo.h> /* TRAP_TRACE, ... */ 10bb898558SAl Viro 119e1a431dSAndi Kleen #define dotraplinkage __visible 12bb898558SAl Viro 13bb898558SAl Viro asmlinkage void divide_error(void); 14bb898558SAl Viro asmlinkage void debug(void); 15bb898558SAl Viro asmlinkage void nmi(void); 16bb898558SAl Viro asmlinkage void int3(void); 17bb898558SAl Viro asmlinkage void overflow(void); 18bb898558SAl Viro asmlinkage void bounds(void); 19bb898558SAl Viro asmlinkage void invalid_op(void); 20bb898558SAl Viro asmlinkage void device_not_available(void); 21bb898558SAl Viro #ifdef CONFIG_X86_64 22bb898558SAl Viro asmlinkage void double_fault(void); 23bb898558SAl Viro #endif 24bb898558SAl Viro asmlinkage void coprocessor_segment_overrun(void); 25bb898558SAl Viro asmlinkage void invalid_TSS(void); 26bb898558SAl Viro asmlinkage void segment_not_present(void); 27bb898558SAl Viro asmlinkage void stack_segment(void); 28bb898558SAl Viro asmlinkage void general_protection(void); 29bb898558SAl Viro asmlinkage void page_fault(void); 30631bc487SGleb Natapov asmlinkage void async_page_fault(void); 31bb898558SAl Viro asmlinkage void spurious_interrupt_bug(void); 32bb898558SAl Viro asmlinkage void coprocessor_error(void); 33bb898558SAl Viro asmlinkage void alignment_check(void); 34bb898558SAl Viro #ifdef CONFIG_X86_MCE 35bb898558SAl Viro asmlinkage void machine_check(void); 36bb898558SAl Viro #endif /* CONFIG_X86_MCE */ 37bb898558SAl Viro asmlinkage void simd_coprocessor_error(void); 38bb898558SAl Viro 395878d5d6SJuergen Gross #if defined(CONFIG_X86_64) && defined(CONFIG_XEN_PV) 405878d5d6SJuergen Gross asmlinkage void xen_divide_error(void); 4143e41110SJuergen Gross asmlinkage void xen_xennmi(void); 425878d5d6SJuergen Gross asmlinkage void xen_xendebug(void); 435878d5d6SJuergen Gross asmlinkage void xen_xenint3(void); 445878d5d6SJuergen Gross asmlinkage void xen_overflow(void); 455878d5d6SJuergen Gross asmlinkage void xen_bounds(void); 465878d5d6SJuergen Gross asmlinkage void xen_invalid_op(void); 475878d5d6SJuergen Gross asmlinkage void xen_device_not_available(void); 485878d5d6SJuergen Gross asmlinkage void xen_double_fault(void); 495878d5d6SJuergen Gross asmlinkage void xen_coprocessor_segment_overrun(void); 505878d5d6SJuergen Gross asmlinkage void xen_invalid_TSS(void); 515878d5d6SJuergen Gross asmlinkage void xen_segment_not_present(void); 525878d5d6SJuergen Gross asmlinkage void xen_stack_segment(void); 535878d5d6SJuergen Gross asmlinkage void xen_general_protection(void); 545878d5d6SJuergen Gross asmlinkage void xen_page_fault(void); 555878d5d6SJuergen Gross asmlinkage void xen_spurious_interrupt_bug(void); 565878d5d6SJuergen Gross asmlinkage void xen_coprocessor_error(void); 575878d5d6SJuergen Gross asmlinkage void xen_alignment_check(void); 585878d5d6SJuergen Gross #ifdef CONFIG_X86_MCE 595878d5d6SJuergen Gross asmlinkage void xen_machine_check(void); 605878d5d6SJuergen Gross #endif /* CONFIG_X86_MCE */ 615878d5d6SJuergen Gross asmlinkage void xen_simd_coprocessor_error(void); 625878d5d6SJuergen Gross #endif 635878d5d6SJuergen Gross 648e1599fcSBorislav Petkov dotraplinkage void do_divide_error(struct pt_regs *regs, long error_code); 658e1599fcSBorislav Petkov dotraplinkage void do_debug(struct pt_regs *regs, long error_code); 668e1599fcSBorislav Petkov dotraplinkage void do_nmi(struct pt_regs *regs, long error_code); 678e1599fcSBorislav Petkov dotraplinkage void do_int3(struct pt_regs *regs, long error_code); 688e1599fcSBorislav Petkov dotraplinkage void do_overflow(struct pt_regs *regs, long error_code); 698e1599fcSBorislav Petkov dotraplinkage void do_bounds(struct pt_regs *regs, long error_code); 708e1599fcSBorislav Petkov dotraplinkage void do_invalid_op(struct pt_regs *regs, long error_code); 718e1599fcSBorislav Petkov dotraplinkage void do_device_not_available(struct pt_regs *regs, long error_code); 728e1599fcSBorislav Petkov dotraplinkage void do_coprocessor_segment_overrun(struct pt_regs *regs, long error_code); 738e1599fcSBorislav Petkov dotraplinkage void do_invalid_TSS(struct pt_regs *regs, long error_code); 748e1599fcSBorislav Petkov dotraplinkage void do_segment_not_present(struct pt_regs *regs, long error_code); 758e1599fcSBorislav Petkov dotraplinkage void do_stack_segment(struct pt_regs *regs, long error_code); 76d1769d54SJaswinder Singh #ifdef CONFIG_X86_64 778e1599fcSBorislav Petkov dotraplinkage void do_double_fault(struct pt_regs *regs, long error_code); 7889f579ceSYi Wang asmlinkage __visible notrace struct pt_regs *sync_regs(struct pt_regs *eregs); 7989f579ceSYi Wang asmlinkage __visible notrace 8089f579ceSYi Wang struct bad_iret_stack *fixup_bad_iret(struct bad_iret_stack *s); 8189f579ceSYi Wang void __init trap_init(void); 82d1769d54SJaswinder Singh #endif 838e1599fcSBorislav Petkov dotraplinkage void do_general_protection(struct pt_regs *regs, long error_code); 848e1599fcSBorislav Petkov dotraplinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code); 858e1599fcSBorislav Petkov dotraplinkage void do_spurious_interrupt_bug(struct pt_regs *regs, long error_code); 868e1599fcSBorislav Petkov dotraplinkage void do_coprocessor_error(struct pt_regs *regs, long error_code); 878e1599fcSBorislav Petkov dotraplinkage void do_alignment_check(struct pt_regs *regs, long error_code); 88bb898558SAl Viro #ifdef CONFIG_X86_MCE 898e1599fcSBorislav Petkov dotraplinkage void do_machine_check(struct pt_regs *regs, long error_code); 90bb898558SAl Viro #endif 918e1599fcSBorislav Petkov dotraplinkage void do_simd_coprocessor_error(struct pt_regs *regs, long error_code); 92bb898558SAl Viro #ifdef CONFIG_X86_32 938e1599fcSBorislav Petkov dotraplinkage void do_iret_error(struct pt_regs *regs, long error_code); 94bb898558SAl Viro #endif 958e1599fcSBorislav Petkov dotraplinkage void do_mce(struct pt_regs *regs, long error_code); 96bb898558SAl Viro 97bb898558SAl Viro static inline int get_si_code(unsigned long condition) 98bb898558SAl Viro { 99bb898558SAl Viro if (condition & DR_STEP) 100bb898558SAl Viro return TRAP_TRACE; 101bb898558SAl Viro else if (condition & (DR_TRAP0|DR_TRAP1|DR_TRAP2|DR_TRAP3)) 102bb898558SAl Viro return TRAP_HWBKPT; 103bb898558SAl Viro else 104bb898558SAl Viro return TRAP_BRKPT; 105bb898558SAl Viro } 106bb898558SAl Viro 107bb898558SAl Viro extern int panic_on_unrecovered_nmi; 108bb898558SAl Viro 109d315760fSTejun Heo void math_emulate(struct math_emu_info *); 110fde0312dSAkinobu Mita #ifndef CONFIG_X86_32 11168b5e432SBorislav Petkov asmlinkage void smp_thermal_interrupt(struct pt_regs *regs); 11268b5e432SBorislav Petkov asmlinkage void smp_threshold_interrupt(struct pt_regs *regs); 11368b5e432SBorislav Petkov asmlinkage void smp_deferred_error_interrupt(struct pt_regs *regs); 114bb898558SAl Viro #endif 115bb898558SAl Viro 1168c84014fSAndy Lutomirski extern void ist_enter(struct pt_regs *regs); 1178c84014fSAndy Lutomirski extern void ist_exit(struct pt_regs *regs); 118bced35b6SAndy Lutomirski extern void ist_begin_non_atomic(struct pt_regs *regs); 119bced35b6SAndy Lutomirski extern void ist_end_non_atomic(void); 12095927475SAndy Lutomirski 1216271cfdfSAndy Lutomirski #ifdef CONFIG_VMAP_STACK 1226271cfdfSAndy Lutomirski void __noreturn handle_stack_overflow(const char *message, 1236271cfdfSAndy Lutomirski struct pt_regs *regs, 1246271cfdfSAndy Lutomirski unsigned long fault_address); 1256271cfdfSAndy Lutomirski #endif 1266271cfdfSAndy Lutomirski 127c9408265SKees Cook /* Interrupts/Exceptions */ 128c9408265SKees Cook enum { 129c9408265SKees Cook X86_TRAP_DE = 0, /* 0, Divide-by-zero */ 130c9408265SKees Cook X86_TRAP_DB, /* 1, Debug */ 131c9408265SKees Cook X86_TRAP_NMI, /* 2, Non-maskable Interrupt */ 132c9408265SKees Cook X86_TRAP_BP, /* 3, Breakpoint */ 133c9408265SKees Cook X86_TRAP_OF, /* 4, Overflow */ 134c9408265SKees Cook X86_TRAP_BR, /* 5, Bound Range Exceeded */ 135c9408265SKees Cook X86_TRAP_UD, /* 6, Invalid Opcode */ 136c9408265SKees Cook X86_TRAP_NM, /* 7, Device Not Available */ 137c9408265SKees Cook X86_TRAP_DF, /* 8, Double Fault */ 138c9408265SKees Cook X86_TRAP_OLD_MF, /* 9, Coprocessor Segment Overrun */ 139c9408265SKees Cook X86_TRAP_TS, /* 10, Invalid TSS */ 140c9408265SKees Cook X86_TRAP_NP, /* 11, Segment Not Present */ 141c9408265SKees Cook X86_TRAP_SS, /* 12, Stack Segment Fault */ 142c9408265SKees Cook X86_TRAP_GP, /* 13, General Protection Fault */ 143c9408265SKees Cook X86_TRAP_PF, /* 14, Page Fault */ 144c9408265SKees Cook X86_TRAP_SPURIOUS, /* 15, Spurious Interrupt */ 145c9408265SKees Cook X86_TRAP_MF, /* 16, x87 Floating-Point Exception */ 146c9408265SKees Cook X86_TRAP_AC, /* 17, Alignment Check */ 147c9408265SKees Cook X86_TRAP_MC, /* 18, Machine Check */ 148c9408265SKees Cook X86_TRAP_XF, /* 19, SIMD Floating-Point Exception */ 149c9408265SKees Cook X86_TRAP_IRET = 32, /* 32, IRET Exception */ 150c9408265SKees Cook }; 151c9408265SKees Cook 1521067f030SRicardo Neri /* 1531067f030SRicardo Neri * Page fault error code bits: 1541067f030SRicardo Neri * 1551067f030SRicardo Neri * bit 0 == 0: no page found 1: protection fault 1561067f030SRicardo Neri * bit 1 == 0: read access 1: write access 1571067f030SRicardo Neri * bit 2 == 0: kernel-mode access 1: user-mode access 1581067f030SRicardo Neri * bit 3 == 1: use of reserved bit detected 1591067f030SRicardo Neri * bit 4 == 1: fault was an instruction fetch 1601067f030SRicardo Neri * bit 5 == 1: protection keys block access 1611067f030SRicardo Neri */ 1621067f030SRicardo Neri enum x86_pf_error_code { 1631067f030SRicardo Neri X86_PF_PROT = 1 << 0, 1641067f030SRicardo Neri X86_PF_WRITE = 1 << 1, 1651067f030SRicardo Neri X86_PF_USER = 1 << 2, 1661067f030SRicardo Neri X86_PF_RSVD = 1 << 3, 1671067f030SRicardo Neri X86_PF_INSTR = 1 << 4, 1681067f030SRicardo Neri X86_PF_PK = 1 << 5, 1691067f030SRicardo Neri }; 1701965aae3SH. Peter Anvin #endif /* _ASM_X86_TRAPS_H */ 171