1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * psr.h: This file holds the macros for masking off various parts of
 4 *        the processor status register on the Sparc. This is valid
 5 *        for Version 8. On the V9 this is renamed to the PSTATE
 6 *        register and its members are accessed as fields like
 7 *        PSTATE.PRIV for the current CPU privilege level.
 8 *
 9 * Copyright (C) 1994 David S. Miller (davem@caip.rutgers.edu)
10 */
11#ifndef __LINUX_SPARC_PSR_H
12#define __LINUX_SPARC_PSR_H
13
14#include <uapi/asm/psr.h>
15
16
17#ifndef __ASSEMBLY__
18/* Get the %psr register. */
19static inline unsigned int get_psr(void)
20{
21	unsigned int psr;
22	__asm__ __volatile__(
23		"rd	%%psr, %0\n\t"
24		"nop\n\t"
25		"nop\n\t"
26		"nop\n\t"
27	: "=r" (psr)
28	: /* no inputs */
29	: "memory");
30
31	return psr;
32}
33
34static inline void put_psr(unsigned int new_psr)
35{
36	__asm__ __volatile__(
37		"wr	%0, 0x0, %%psr\n\t"
38		"nop\n\t"
39		"nop\n\t"
40		"nop\n\t"
41	: /* no outputs */
42	: "r" (new_psr)
43	: "memory", "cc");
44}
45
46/* Get the %fsr register.  Be careful, make sure the floating point
47 * enable bit is set in the %psr when you execute this or you will
48 * incur a trap.
49 */
50
51extern unsigned int fsr_storage;
52
53static inline unsigned int get_fsr(void)
54{
55	unsigned int fsr = 0;
56
57	__asm__ __volatile__(
58		"st	%%fsr, %1\n\t"
59		"ld	%1, %0\n\t"
60	: "=r" (fsr)
61	: "m" (fsr_storage));
62
63	return fsr;
64}
65
66#endif /* !(__ASSEMBLY__) */
67
68#endif /* !(__LINUX_SPARC_PSR_H) */

 
 1/*
 2 * psr.h: This file holds the macros for masking off various parts of
 3 *        the processor status register on the Sparc. This is valid
 4 *        for Version 8. On the V9 this is renamed to the PSTATE
 5 *        register and its members are accessed as fields like
 6 *        PSTATE.PRIV for the current CPU privilege level.
 7 *
 8 * Copyright (C) 1994 David S. Miller (davem@caip.rutgers.edu)
 9 */
10#ifndef __LINUX_SPARC_PSR_H
11#define __LINUX_SPARC_PSR_H
12
13#include <uapi/asm/psr.h>
14
15
16#ifndef __ASSEMBLY__
17/* Get the %psr register. */
18static inline unsigned int get_psr(void)
19{
20	unsigned int psr;
21	__asm__ __volatile__(
22		"rd	%%psr, %0\n\t"
23		"nop\n\t"
24		"nop\n\t"
25		"nop\n\t"
26	: "=r" (psr)
27	: /* no inputs */
28	: "memory");
29
30	return psr;
31}
32
33static inline void put_psr(unsigned int new_psr)
34{
35	__asm__ __volatile__(
36		"wr	%0, 0x0, %%psr\n\t"
37		"nop\n\t"
38		"nop\n\t"
39		"nop\n\t"
40	: /* no outputs */
41	: "r" (new_psr)
42	: "memory", "cc");
43}
44
45/* Get the %fsr register.  Be careful, make sure the floating point
46 * enable bit is set in the %psr when you execute this or you will
47 * incur a trap.
48 */
49
50extern unsigned int fsr_storage;
51
52static inline unsigned int get_fsr(void)
53{
54	unsigned int fsr = 0;
55
56	__asm__ __volatile__(
57		"st	%%fsr, %1\n\t"
58		"ld	%1, %0\n\t"
59	: "=r" (fsr)
60	: "m" (fsr_storage));
61
62	return fsr;
63}
64
65#endif /* !(__ASSEMBLY__) */
66
67#endif /* !(__LINUX_SPARC_PSR_H) */