1 #ifndef __ASM_SH_SYSTEM_64_H
2 #define __ASM_SH_SYSTEM_64_H
3 
4 /*
5  * include/asm-sh/system_64.h
6  *
7  * Copyright (C) 2000, 2001  Paolo Alberelli
8  * Copyright (C) 2003  Paul Mundt
9  * Copyright (C) 2004  Richard Curnow
10  *
11  * This file is subject to the terms and conditions of the GNU General Public
12  * License.  See the file "COPYING" in the main directory of this archive
13  * for more details.
14  */
15 #include <cpu/registers.h>
16 #include <asm/processor.h>
17 
18 /*
19  *	switch_to() should switch tasks to task nr n, first
20  */
21 struct thread_struct;
22 struct task_struct *sh64_switch_to(struct task_struct *prev,
23 				   struct thread_struct *prev_thread,
24 				   struct task_struct *next,
25 				   struct thread_struct *next_thread);
26 
27 #define switch_to(prev,next,last)				\
28 do {								\
29 	if (last_task_used_math != next) {			\
30 		struct pt_regs *regs = next->thread.uregs;	\
31 		if (regs) regs->sr |= SR_FD;			\
32 	}							\
33 	last = sh64_switch_to(prev, &prev->thread, next,	\
34 			      &next->thread);			\
35 } while (0)
36 
37 #define __icbi(addr)	__asm__ __volatile__ ( "icbi %0, 0\n\t" : : "r" (addr))
38 #define __ocbp(addr)	__asm__ __volatile__ ( "ocbp %0, 0\n\t" : : "r" (addr))
39 #define __ocbi(addr)	__asm__ __volatile__ ( "ocbi %0, 0\n\t" : : "r" (addr))
40 #define __ocbwb(addr)	__asm__ __volatile__ ( "ocbwb %0, 0\n\t" : : "r" (addr))
41 
register_align(void * val)42 static inline reg_size_t register_align(void *val)
43 {
44 	return (unsigned long long)(signed long long)(signed long)val;
45 }
46 
47 extern void phys_stext(void);
48 
trigger_address_error(void)49 static inline void trigger_address_error(void)
50 {
51 	phys_stext();
52 }
53 
54 #define SR_BL_LL	0x0000000010000000LL
55 
set_bl_bit(void)56 static inline void set_bl_bit(void)
57 {
58 	unsigned long long __dummy0, __dummy1 = SR_BL_LL;
59 
60 	__asm__ __volatile__("getcon	" __SR ", %0\n\t"
61 			     "or	%0, %1, %0\n\t"
62 			     "putcon	%0, " __SR "\n\t"
63 			     : "=&r" (__dummy0)
64 			     : "r" (__dummy1));
65 
66 }
67 
clear_bl_bit(void)68 static inline void clear_bl_bit(void)
69 {
70 	unsigned long long __dummy0, __dummy1 = ~SR_BL_LL;
71 
72 	__asm__ __volatile__("getcon	" __SR ", %0\n\t"
73 			     "and	%0, %1, %0\n\t"
74 			     "putcon	%0, " __SR "\n\t"
75 			     : "=&r" (__dummy0)
76 			     : "r" (__dummy1));
77 }
78 
79 #endif /* __ASM_SH_SYSTEM_64_H */
80