[mirror_ubuntu-zesty-kernel.git] / arch / blackfin / include / asm / entry.h

#ifndef __BFIN_ENTRY_H
#define __BFIN_ENTRY_H

#include <asm/setup.h>
#include <asm/page.h>

#ifdef __ASSEMBLY__

#define	LFLUSH_I_AND_D	0x00000808
#define	LSIGTRAP	5

/* process bits for task_struct.flags */
#define	PF_TRACESYS_OFF	3
#define	PF_TRACESYS_BIT	5
#define	PF_PTRACED_OFF	3
#define	PF_PTRACED_BIT	4
#define	PF_DTRACE_OFF	1
#define	PF_DTRACE_BIT	5

/*
 * NOTE!  The single-stepping code assumes that all interrupt handlers
 * start by saving SYSCFG on the stack with their first instruction.
 */

/* This one is used for exceptions, emulation, and NMI.  It doesn't push
   RETI and doesn't do cli.  */
#define SAVE_ALL_SYS		save_context_no_interrupts
/* This is used for all normal interrupts.  It saves a minimum of registers
   to the stack, loads the IRQ number, and jumps to common code.  */
#define INTERRUPT_ENTRY(N)						\
    [--sp] = SYSCFG;							\
									\
    [--sp] = P0;	/*orig_p0*/					\
    [--sp] = R0;	/*orig_r0*/					\
    [--sp] = (R7:0,P5:0);						\
    R0 = (N);								\
    jump __common_int_entry;

/* For timer interrupts, we need to save IPEND, since the user_mode
	   macro accesses it to determine where to account time.  */
#define TIMER_INTERRUPT_ENTRY(N)					\
    [--sp] = SYSCFG;							\
									\
    [--sp] = P0;	/*orig_p0*/					\
    [--sp] = R0;	/*orig_r0*/					\
    [--sp] = (R7:0,P5:0);						\
    p0.l = lo(IPEND);							\
    p0.h = hi(IPEND);							\
    r1 = [p0];								\
    R0 = (N);								\
    jump __common_int_entry;

/* This one pushes RETI without using CLI.  Interrupts are enabled.  */
#define SAVE_CONTEXT_SYSCALL	save_context_syscall
#define SAVE_CONTEXT		save_context_with_interrupts

#define RESTORE_ALL_SYS		restore_context_no_interrupts
#define RESTORE_CONTEXT		restore_context_with_interrupts

#endif				/* __ASSEMBLY__ */
#endif				/* __BFIN_ENTRY_H */
Commit	Line	Data
1394f032 BW	1	#ifndef __BFIN_ENTRY_H
	2	#define __BFIN_ENTRY_H
	3
	4	#include <asm/setup.h>
	5	#include <asm/page.h>
	6
	7	#ifdef __ASSEMBLY__
	8
	9	#define LFLUSH_I_AND_D 0x00000808
	10	#define LSIGTRAP 5
	11
	12	/* process bits for task_struct.flags */
	13	#define PF_TRACESYS_OFF 3
	14	#define PF_TRACESYS_BIT 5
	15	#define PF_PTRACED_OFF 3
	16	#define PF_PTRACED_BIT 4
	17	#define PF_DTRACE_OFF 1
	18	#define PF_DTRACE_BIT 5
	19
0893f125 BS	20	/*
	21	* NOTE! The single-stepping code assumes that all interrupt handlers
	22	* start by saving SYSCFG on the stack with their first instruction.
	23	*/
	24
1394f032 BW	25	/* This one is used for exceptions, emulation, and NMI. It doesn't push
	26	RETI and doesn't do cli. */
	27	#define SAVE_ALL_SYS save_context_no_interrupts
	28	/* This is used for all normal interrupts. It saves a minimum of registers
	29	to the stack, loads the IRQ number, and jumps to common code. */
	30	#define INTERRUPT_ENTRY(N) \
	31	[--sp] = SYSCFG; \
	32	\
	33	[--sp] = P0; /orig_p0/ \
	34	[--sp] = R0; /orig_r0/ \
	35	[--sp] = (R7:0,P5:0); \
	36	R0 = (N); \
	37	jump __common_int_entry;
	38
	39	/* For timer interrupts, we need to save IPEND, since the user_mode
	40	macro accesses it to determine where to account time. */
	41	#define TIMER_INTERRUPT_ENTRY(N) \
	42	[--sp] = SYSCFG; \
	43	\
	44	[--sp] = P0; /orig_p0/ \
	45	[--sp] = R0; /orig_r0/ \
	46	[--sp] = (R7:0,P5:0); \
	47	p0.l = lo(IPEND); \
	48	p0.h = hi(IPEND); \
	49	r1 = [p0]; \
	50	R0 = (N); \
	51	jump __common_int_entry;
	52
	53	/* This one pushes RETI without using CLI. Interrupts are enabled. */
	54	#define SAVE_CONTEXT_SYSCALL save_context_syscall
	55	#define SAVE_CONTEXT save_context_with_interrupts
	56
	57	#define RESTORE_ALL_SYS restore_context_no_interrupts
	58	#define RESTORE_CONTEXT restore_context_with_interrupts
	59
	60	#endif /* __ASSEMBLY__ */
	61	#endif /* __BFIN_ENTRY_H */