[mirror_ubuntu-artful-kernel.git] / arch / x86 / include / asm / traps.h

#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);

#ifdef CONFIG_TRACING
#define trace_stack_segment stack_segment
#define trace_divide_error divide_error
#define trace_bounds bounds
#define trace_invalid_op invalid_op
#define trace_device_not_available device_not_available
#define trace_coprocessor_segment_overrun coprocessor_segment_overrun
#define trace_invalid_TSS invalid_TSS
#define trace_segment_not_present segment_not_present
#define trace_general_protection general_protection
#define trace_spurious_interrupt_bug spurious_interrupt_bug
#define trace_coprocessor_error coprocessor_error
#define trace_alignment_check alignment_check
#define trace_simd_coprocessor_error simd_coprocessor_error
#define trace_async_page_fault async_page_fault
#define trace_page_fault page_fault
#endif

#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_xenint3(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 *, long);
dotraplinkage void do_debug(struct pt_regs *, long);
dotraplinkage void do_nmi(struct pt_regs *, long);
dotraplinkage void do_int3(struct pt_regs *, long);
dotraplinkage void do_overflow(struct pt_regs *, long);
dotraplinkage void do_bounds(struct pt_regs *, long);
dotraplinkage void do_invalid_op(struct pt_regs *, long);
dotraplinkage void do_device_not_available(struct pt_regs *, long);
dotraplinkage void do_coprocessor_segment_overrun(struct pt_regs *, long);
dotraplinkage void do_invalid_TSS(struct pt_regs *, long);
dotraplinkage void do_segment_not_present(struct pt_regs *, long);
dotraplinkage void do_stack_segment(struct pt_regs *, long);
#ifdef CONFIG_X86_64
dotraplinkage void do_double_fault(struct pt_regs *, long);
#endif
dotraplinkage void do_general_protection(struct pt_regs *, long);
dotraplinkage void do_page_fault(struct pt_regs *, unsigned long);
dotraplinkage void do_spurious_interrupt_bug(struct pt_regs *, long);
dotraplinkage void do_coprocessor_error(struct pt_regs *, long);
dotraplinkage void do_alignment_check(struct pt_regs *, long);
#ifdef CONFIG_X86_MCE
dotraplinkage void do_machine_check(struct pt_regs *, long);
#endif
dotraplinkage void do_simd_coprocessor_error(struct pt_regs *, long);
#ifdef CONFIG_X86_32
dotraplinkage void do_iret_error(struct pt_regs *, long);
#endif

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(void);
asmlinkage void smp_threshold_interrupt(void);
asmlinkage void smp_deferred_error_interrupt(void);
#endif

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 */
Commit	Line	Data
1965aae3 PA	1	#ifndef _ASM_X86_TRAPS_H
1965aae3 PA	2	#define _ASM_X86_TRAPS_H
6ac8d51f	3
95927475	4	#include <linux/context_tracking_state.h>
5cec93c2 AL	5	#include <linux/kprobes.h>
5cec93c2 AL	6
e8d3f455	7	#include <asm/debugreg.h>
a2bcd473	8	#include <asm/siginfo.h> /* TRAP_TRACE, ... */
e8d3f455	9
9e1a431d	10	#define dotraplinkage __visible
e407d620	11
6ac8d51f JS	12	asmlinkage void divide_error(void);
	13	asmlinkage void debug(void);
	14	asmlinkage void nmi(void);
	15	asmlinkage void int3(void);
	16	asmlinkage void overflow(void);
	17	asmlinkage void bounds(void);
	18	asmlinkage void invalid_op(void);
	19	asmlinkage void device_not_available(void);
e407d620 AH	20	#ifdef CONFIG_X86_64
	21	asmlinkage void double_fault(void);
	22	#endif
6ac8d51f JS	23	asmlinkage void coprocessor_segment_overrun(void);
	24	asmlinkage void invalid_TSS(void);
	25	asmlinkage void segment_not_present(void);
	26	asmlinkage void stack_segment(void);
	27	asmlinkage void general_protection(void);
	28	asmlinkage void page_fault(void);
631bc487	29	asmlinkage void async_page_fault(void);
e407d620	30	asmlinkage void spurious_interrupt_bug(void);
6ac8d51f	31	asmlinkage void coprocessor_error(void);
6ac8d51f	32	asmlinkage void alignment_check(void);
6ac8d51f JS	33	#ifdef CONFIG_X86_MCE
	34	asmlinkage void machine_check(void);
	35	#endif /* CONFIG_X86_MCE */
e407d620	36	asmlinkage void simd_coprocessor_error(void);
6ac8d51f	37
25c74b10	38	#ifdef CONFIG_TRACING
6f442be2	39	#define trace_stack_segment stack_segment
25c74b10 SA	40	#define trace_divide_error divide_error
	41	#define trace_bounds bounds
	42	#define trace_invalid_op invalid_op
	43	#define trace_device_not_available device_not_available
	44	#define trace_coprocessor_segment_overrun coprocessor_segment_overrun
	45	#define trace_invalid_TSS invalid_TSS
	46	#define trace_segment_not_present segment_not_present
	47	#define trace_general_protection general_protection
	48	#define trace_spurious_interrupt_bug spurious_interrupt_bug
	49	#define trace_coprocessor_error coprocessor_error
	50	#define trace_alignment_check alignment_check
	51	#define trace_simd_coprocessor_error simd_coprocessor_error
	52	#define trace_async_page_fault async_page_fault
8478bb56	53	#define trace_page_fault page_fault
25c74b10 SA	54	#endif
25c74b10 SA	55
9a6fb927 JG	56	#if defined(CONFIG_X86_64) && defined(CONFIG_XEN_PV)
9a6fb927 JG	57	asmlinkage void xen_divide_error(void);
20c970e0	58	asmlinkage void xen_xennmi(void);
9a6fb927 JG	59	asmlinkage void xen_xendebug(void);
9a6fb927 JG	60	asmlinkage void xen_xenint3(void);
9a6fb927 JG	61	asmlinkage void xen_overflow(void);
	62	asmlinkage void xen_bounds(void);
	63	asmlinkage void xen_invalid_op(void);
	64	asmlinkage void xen_device_not_available(void);
	65	asmlinkage void xen_double_fault(void);
	66	asmlinkage void xen_coprocessor_segment_overrun(void);
	67	asmlinkage void xen_invalid_TSS(void);
	68	asmlinkage void xen_segment_not_present(void);
	69	asmlinkage void xen_stack_segment(void);
	70	asmlinkage void xen_general_protection(void);
	71	asmlinkage void xen_page_fault(void);
	72	asmlinkage void xen_spurious_interrupt_bug(void);
	73	asmlinkage void xen_coprocessor_error(void);
	74	asmlinkage void xen_alignment_check(void);
	75	#ifdef CONFIG_X86_MCE
	76	asmlinkage void xen_machine_check(void);
	77	#endif /* CONFIG_X86_MCE */
	78	asmlinkage void xen_simd_coprocessor_error(void);
	79	#endif
	80
e407d620 AH	81	dotraplinkage void do_divide_error(struct pt_regs *, long);
	82	dotraplinkage void do_debug(struct pt_regs *, long);
	83	dotraplinkage void do_nmi(struct pt_regs *, long);
	84	dotraplinkage void do_int3(struct pt_regs *, long);
	85	dotraplinkage void do_overflow(struct pt_regs *, long);
	86	dotraplinkage void do_bounds(struct pt_regs *, long);
	87	dotraplinkage void do_invalid_op(struct pt_regs *, long);
aa78bcfa	88	dotraplinkage void do_device_not_available(struct pt_regs *, long);
e407d620 AH	89	dotraplinkage void do_coprocessor_segment_overrun(struct pt_regs *, long);
	90	dotraplinkage void do_invalid_TSS(struct pt_regs *, long);
	91	dotraplinkage void do_segment_not_present(struct pt_regs *, long);
	92	dotraplinkage void do_stack_segment(struct pt_regs *, long);
d1769d54 JS	93	#ifdef CONFIG_X86_64
d1769d54 JS	94	dotraplinkage void do_double_fault(struct pt_regs *, long);
d1769d54	95	#endif
e407d620 AH	96	dotraplinkage void do_general_protection(struct pt_regs *, long);
	97	dotraplinkage void do_page_fault(struct pt_regs *, unsigned long);
	98	dotraplinkage void do_spurious_interrupt_bug(struct pt_regs *, long);
	99	dotraplinkage void do_coprocessor_error(struct pt_regs *, long);
	100	dotraplinkage void do_alignment_check(struct pt_regs *, long);
	101	#ifdef CONFIG_X86_MCE
	102	dotraplinkage void do_machine_check(struct pt_regs *, long);
	103	#endif
	104	dotraplinkage void do_simd_coprocessor_error(struct pt_regs *, long);
	105	#ifdef CONFIG_X86_32
	106	dotraplinkage void do_iret_error(struct pt_regs *, long);
	107	#endif
6ac8d51f	108
da654b74 SD	109	static inline int get_si_code(unsigned long condition)
	110	{
	111	if (condition & DR_STEP)
	112	return TRAP_TRACE;
	113	else if (condition & (DR_TRAP0\|DR_TRAP1\|DR_TRAP2\|DR_TRAP3))
	114	return TRAP_HWBKPT;
	115	else
	116	return TRAP_BRKPT;
	117	}
	118
6ac8d51f	119	extern int panic_on_unrecovered_nmi;
6ac8d51f	120
d315760f	121	void math_emulate(struct math_emu_info *);
fde0312d	122	#ifndef CONFIG_X86_32
d1769d54	123	asmlinkage void smp_thermal_interrupt(void);
24fd78a8 AG	124	asmlinkage void smp_threshold_interrupt(void);
24fd78a8 AG	125	asmlinkage void smp_deferred_error_interrupt(void);
e407d620	126	#endif
6ac8d51f	127
8c84014f AL	128	extern void ist_enter(struct pt_regs *regs);
8c84014f AL	129	extern void ist_exit(struct pt_regs *regs);
bced35b6 AL	130	extern void ist_begin_non_atomic(struct pt_regs *regs);
bced35b6 AL	131	extern void ist_end_non_atomic(void);
95927475	132
6271cfdf AL	133	#ifdef CONFIG_VMAP_STACK
	134	void __noreturn handle_stack_overflow(const char *message,
	135	struct pt_regs *regs,
	136	unsigned long fault_address);
	137	#endif
	138
c9408265 KC	139	/* Interrupts/Exceptions */
	140	enum {
	141	X86_TRAP_DE = 0, /* 0, Divide-by-zero */
	142	X86_TRAP_DB, /* 1, Debug */
	143	X86_TRAP_NMI, /* 2, Non-maskable Interrupt */
	144	X86_TRAP_BP, /* 3, Breakpoint */
	145	X86_TRAP_OF, /* 4, Overflow */
	146	X86_TRAP_BR, /* 5, Bound Range Exceeded */
	147	X86_TRAP_UD, /* 6, Invalid Opcode */
	148	X86_TRAP_NM, /* 7, Device Not Available */
	149	X86_TRAP_DF, /* 8, Double Fault */
	150	X86_TRAP_OLD_MF, /* 9, Coprocessor Segment Overrun */
	151	X86_TRAP_TS, /* 10, Invalid TSS */
	152	X86_TRAP_NP, /* 11, Segment Not Present */
	153	X86_TRAP_SS, /* 12, Stack Segment Fault */
	154	X86_TRAP_GP, /* 13, General Protection Fault */
	155	X86_TRAP_PF, /* 14, Page Fault */
	156	X86_TRAP_SPURIOUS, /* 15, Spurious Interrupt */
	157	X86_TRAP_MF, /* 16, x87 Floating-Point Exception */
	158	X86_TRAP_AC, /* 17, Alignment Check */
	159	X86_TRAP_MC, /* 18, Machine Check */
	160	X86_TRAP_XF, /* 19, SIMD Floating-Point Exception */
	161	X86_TRAP_IRET = 32, /* 32, IRET Exception */
	162	};
	163
a85a07ab RN	164	/*
	165	* Page fault error code bits:
	166	*
	167	* bit 0 == 0: no page found 1: protection fault
	168	* bit 1 == 0: read access 1: write access
	169	* bit 2 == 0: kernel-mode access 1: user-mode access
	170	* bit 3 == 1: use of reserved bit detected
	171	* bit 4 == 1: fault was an instruction fetch
	172	* bit 5 == 1: protection keys block access
	173	*/
	174	enum x86_pf_error_code {
	175	X86_PF_PROT = 1 << 0,
	176	X86_PF_WRITE = 1 << 1,
	177	X86_PF_USER = 1 << 2,
	178	X86_PF_RSVD = 1 << 3,
	179	X86_PF_INSTR = 1 << 4,
	180	X86_PF_PK = 1 << 5,
	181	};
1965aae3	182	#endif /* _ASM_X86_TRAPS_H */