/arch/sh/include/asm/system_64.h

 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 */
21struct thread_struct;
22struct 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)				\
28do {								\
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
42static inline reg_size_t register_align(void *val)
43{
44	return (unsigned long long)(signed long long)(signed long)val;
45}
46
47extern void phys_stext(void);
48
49static inline void trigger_address_error(void)
50{
51	phys_stext();
52}
53
54#define SR_BL_LL	0x0000000010000000LL
55
56static 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
68static 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 */