Loading...
1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * User space memory access functions
4 *
5 * Copyright (C) 1999, 2002 Niibe Yutaka
6 * Copyright (C) 2003 - 2008 Paul Mundt
7 *
8 * Based on:
9 * MIPS implementation version 1.15 by
10 * Copyright (C) 1996, 1997, 1998 by Ralf Baechle
11 * and i386 version.
12 */
13#ifndef __ASM_SH_UACCESS_32_H
14#define __ASM_SH_UACCESS_32_H
15
16#define __get_user_size(x,ptr,size,retval) \
17do { \
18 retval = 0; \
19 switch (size) { \
20 case 1: \
21 __get_user_asm(x, ptr, retval, "b"); \
22 break; \
23 case 2: \
24 __get_user_asm(x, ptr, retval, "w"); \
25 break; \
26 case 4: \
27 __get_user_asm(x, ptr, retval, "l"); \
28 break; \
29 default: \
30 __get_user_unknown(); \
31 break; \
32 } \
33} while (0)
34
35#ifdef CONFIG_MMU
36#define __get_user_asm(x, addr, err, insn) \
37({ \
38__asm__ __volatile__( \
39 "1:\n\t" \
40 "mov." insn " %2, %1\n\t" \
41 "2:\n" \
42 ".section .fixup,\"ax\"\n" \
43 "3:\n\t" \
44 "mov #0, %1\n\t" \
45 "mov.l 4f, %0\n\t" \
46 "jmp @%0\n\t" \
47 " mov %3, %0\n\t" \
48 ".balign 4\n" \
49 "4: .long 2b\n\t" \
50 ".previous\n" \
51 ".section __ex_table,\"a\"\n\t" \
52 ".long 1b, 3b\n\t" \
53 ".previous" \
54 :"=&r" (err), "=&r" (x) \
55 :"m" (__m(addr)), "i" (-EFAULT), "0" (err)); })
56#else
57#define __get_user_asm(x, addr, err, insn) \
58do { \
59 __asm__ __volatile__ ( \
60 "mov." insn " %1, %0\n\t" \
61 : "=&r" (x) \
62 : "m" (__m(addr)) \
63 ); \
64} while (0)
65#endif /* CONFIG_MMU */
66
67extern void __get_user_unknown(void);
68
69#define __put_user_size(x,ptr,size,retval) \
70do { \
71 retval = 0; \
72 switch (size) { \
73 case 1: \
74 __put_user_asm(x, ptr, retval, "b"); \
75 break; \
76 case 2: \
77 __put_user_asm(x, ptr, retval, "w"); \
78 break; \
79 case 4: \
80 __put_user_asm(x, ptr, retval, "l"); \
81 break; \
82 case 8: \
83 __put_user_u64(x, ptr, retval); \
84 break; \
85 default: \
86 __put_user_unknown(); \
87 } \
88} while (0)
89
90#ifdef CONFIG_MMU
91#define __put_user_asm(x, addr, err, insn) \
92do { \
93 __asm__ __volatile__ ( \
94 "1:\n\t" \
95 "mov." insn " %1, %2\n\t" \
96 "2:\n" \
97 ".section .fixup,\"ax\"\n" \
98 "3:\n\t" \
99 "mov.l 4f, %0\n\t" \
100 "jmp @%0\n\t" \
101 " mov %3, %0\n\t" \
102 ".balign 4\n" \
103 "4: .long 2b\n\t" \
104 ".previous\n" \
105 ".section __ex_table,\"a\"\n\t" \
106 ".long 1b, 3b\n\t" \
107 ".previous" \
108 : "=&r" (err) \
109 : "r" (x), "m" (__m(addr)), "i" (-EFAULT), \
110 "0" (err) \
111 : "memory" \
112 ); \
113} while (0)
114#else
115#define __put_user_asm(x, addr, err, insn) \
116do { \
117 __asm__ __volatile__ ( \
118 "mov." insn " %0, %1\n\t" \
119 : /* no outputs */ \
120 : "r" (x), "m" (__m(addr)) \
121 : "memory" \
122 ); \
123} while (0)
124#endif /* CONFIG_MMU */
125
126#if defined(CONFIG_CPU_LITTLE_ENDIAN)
127#define __put_user_u64(val,addr,retval) \
128({ \
129__asm__ __volatile__( \
130 "1:\n\t" \
131 "mov.l %R1,%2\n\t" \
132 "mov.l %S1,%T2\n\t" \
133 "2:\n" \
134 ".section .fixup,\"ax\"\n" \
135 "3:\n\t" \
136 "mov.l 4f,%0\n\t" \
137 "jmp @%0\n\t" \
138 " mov %3,%0\n\t" \
139 ".balign 4\n" \
140 "4: .long 2b\n\t" \
141 ".previous\n" \
142 ".section __ex_table,\"a\"\n\t" \
143 ".long 1b, 3b\n\t" \
144 ".previous" \
145 : "=r" (retval) \
146 : "r" (val), "m" (__m(addr)), "i" (-EFAULT), "0" (retval) \
147 : "memory"); })
148#else
149#define __put_user_u64(val,addr,retval) \
150({ \
151__asm__ __volatile__( \
152 "1:\n\t" \
153 "mov.l %S1,%2\n\t" \
154 "mov.l %R1,%T2\n\t" \
155 "2:\n" \
156 ".section .fixup,\"ax\"\n" \
157 "3:\n\t" \
158 "mov.l 4f,%0\n\t" \
159 "jmp @%0\n\t" \
160 " mov %3,%0\n\t" \
161 ".balign 4\n" \
162 "4: .long 2b\n\t" \
163 ".previous\n" \
164 ".section __ex_table,\"a\"\n\t" \
165 ".long 1b, 3b\n\t" \
166 ".previous" \
167 : "=r" (retval) \
168 : "r" (val), "m" (__m(addr)), "i" (-EFAULT), "0" (retval) \
169 : "memory"); })
170#endif
171
172extern void __put_user_unknown(void);
173
174#endif /* __ASM_SH_UACCESS_32_H */
1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * User space memory access functions
4 *
5 * Copyright (C) 1999, 2002 Niibe Yutaka
6 * Copyright (C) 2003 - 2008 Paul Mundt
7 *
8 * Based on:
9 * MIPS implementation version 1.15 by
10 * Copyright (C) 1996, 1997, 1998 by Ralf Baechle
11 * and i386 version.
12 */
13#ifndef __ASM_SH_UACCESS_32_H
14#define __ASM_SH_UACCESS_32_H
15
16#define __get_user_size(x,ptr,size,retval) \
17do { \
18 retval = 0; \
19 switch (size) { \
20 case 1: \
21 __get_user_asm(x, ptr, retval, "b"); \
22 break; \
23 case 2: \
24 __get_user_asm(x, ptr, retval, "w"); \
25 break; \
26 case 4: \
27 __get_user_asm(x, ptr, retval, "l"); \
28 break; \
29 case 8: \
30 __get_user_u64(x, ptr, retval); \
31 break; \
32 default: \
33 __get_user_unknown(); \
34 break; \
35 } \
36} while (0)
37
38#ifdef CONFIG_MMU
39#define __get_user_asm(x, addr, err, insn) \
40({ \
41__asm__ __volatile__( \
42 "1:\n\t" \
43 "mov." insn " %2, %1\n\t" \
44 "2:\n" \
45 ".section .fixup,\"ax\"\n" \
46 "3:\n\t" \
47 "mov #0, %1\n\t" \
48 "mov.l 4f, %0\n\t" \
49 "jmp @%0\n\t" \
50 " mov %3, %0\n\t" \
51 ".balign 4\n" \
52 "4: .long 2b\n\t" \
53 ".previous\n" \
54 ".section __ex_table,\"a\"\n\t" \
55 ".long 1b, 3b\n\t" \
56 ".previous" \
57 :"=&r" (err), "=&r" (x) \
58 :"m" (__m(addr)), "i" (-EFAULT), "0" (err)); })
59#else
60#define __get_user_asm(x, addr, err, insn) \
61do { \
62 __asm__ __volatile__ ( \
63 "mov." insn " %1, %0\n\t" \
64 : "=&r" (x) \
65 : "m" (__m(addr)) \
66 ); \
67} while (0)
68#endif /* CONFIG_MMU */
69
70extern void __get_user_unknown(void);
71
72#if defined(CONFIG_CPU_LITTLE_ENDIAN)
73#define __get_user_u64(x, addr, err) \
74({ \
75__asm__ __volatile__( \
76 "1:\n\t" \
77 "mov.l %2,%R1\n\t" \
78 "mov.l %T2,%S1\n\t" \
79 "2:\n" \
80 ".section .fixup,\"ax\"\n" \
81 "3:\n\t" \
82 "mov #0,%R1\n\t" \
83 "mov #0,%S1\n\t" \
84 "mov.l 4f, %0\n\t" \
85 "jmp @%0\n\t" \
86 " mov %3, %0\n\t" \
87 ".balign 4\n" \
88 "4: .long 2b\n\t" \
89 ".previous\n" \
90 ".section __ex_table,\"a\"\n\t" \
91 ".long 1b, 3b\n\t" \
92 ".long 1b + 2, 3b\n\t" \
93 ".previous" \
94 :"=&r" (err), "=&r" (x) \
95 :"m" (__m(addr)), "i" (-EFAULT), "0" (err)); })
96#else
97#define __get_user_u64(x, addr, err) \
98({ \
99__asm__ __volatile__( \
100 "1:\n\t" \
101 "mov.l %2,%S1\n\t" \
102 "mov.l %T2,%R1\n\t" \
103 "2:\n" \
104 ".section .fixup,\"ax\"\n" \
105 "3:\n\t" \
106 "mov #0,%S1\n\t" \
107 "mov #0,%R1\n\t" \
108 "mov.l 4f, %0\n\t" \
109 "jmp @%0\n\t" \
110 " mov %3, %0\n\t" \
111 ".balign 4\n" \
112 "4: .long 2b\n\t" \
113 ".previous\n" \
114 ".section __ex_table,\"a\"\n\t" \
115 ".long 1b, 3b\n\t" \
116 ".long 1b + 2, 3b\n\t" \
117 ".previous" \
118 :"=&r" (err), "=&r" (x) \
119 :"m" (__m(addr)), "i" (-EFAULT), "0" (err)); })
120#endif
121
122#define __put_user_size(x,ptr,size,retval) \
123do { \
124 retval = 0; \
125 switch (size) { \
126 case 1: \
127 __put_user_asm(x, ptr, retval, "b"); \
128 break; \
129 case 2: \
130 __put_user_asm(x, ptr, retval, "w"); \
131 break; \
132 case 4: \
133 __put_user_asm(x, ptr, retval, "l"); \
134 break; \
135 case 8: \
136 __put_user_u64(x, ptr, retval); \
137 break; \
138 default: \
139 __put_user_unknown(); \
140 } \
141} while (0)
142
143#ifdef CONFIG_MMU
144#define __put_user_asm(x, addr, err, insn) \
145do { \
146 __asm__ __volatile__ ( \
147 "1:\n\t" \
148 "mov." insn " %1, %2\n\t" \
149 "2:\n" \
150 ".section .fixup,\"ax\"\n" \
151 "3:\n\t" \
152 "mov.l 4f, %0\n\t" \
153 "jmp @%0\n\t" \
154 " mov %3, %0\n\t" \
155 ".balign 4\n" \
156 "4: .long 2b\n\t" \
157 ".previous\n" \
158 ".section __ex_table,\"a\"\n\t" \
159 ".long 1b, 3b\n\t" \
160 ".previous" \
161 : "=&r" (err) \
162 : "r" (x), "m" (__m(addr)), "i" (-EFAULT), \
163 "0" (err) \
164 : "memory" \
165 ); \
166} while (0)
167#else
168#define __put_user_asm(x, addr, err, insn) \
169do { \
170 __asm__ __volatile__ ( \
171 "mov." insn " %0, %1\n\t" \
172 : /* no outputs */ \
173 : "r" (x), "m" (__m(addr)) \
174 : "memory" \
175 ); \
176} while (0)
177#endif /* CONFIG_MMU */
178
179#if defined(CONFIG_CPU_LITTLE_ENDIAN)
180#define __put_user_u64(val,addr,retval) \
181({ \
182__asm__ __volatile__( \
183 "1:\n\t" \
184 "mov.l %R1,%2\n\t" \
185 "mov.l %S1,%T2\n\t" \
186 "2:\n" \
187 ".section .fixup,\"ax\"\n" \
188 "3:\n\t" \
189 "mov.l 4f,%0\n\t" \
190 "jmp @%0\n\t" \
191 " mov %3,%0\n\t" \
192 ".balign 4\n" \
193 "4: .long 2b\n\t" \
194 ".previous\n" \
195 ".section __ex_table,\"a\"\n\t" \
196 ".long 1b, 3b\n\t" \
197 ".previous" \
198 : "=r" (retval) \
199 : "r" (val), "m" (__m(addr)), "i" (-EFAULT), "0" (retval) \
200 : "memory"); })
201#else
202#define __put_user_u64(val,addr,retval) \
203({ \
204__asm__ __volatile__( \
205 "1:\n\t" \
206 "mov.l %S1,%2\n\t" \
207 "mov.l %R1,%T2\n\t" \
208 "2:\n" \
209 ".section .fixup,\"ax\"\n" \
210 "3:\n\t" \
211 "mov.l 4f,%0\n\t" \
212 "jmp @%0\n\t" \
213 " mov %3,%0\n\t" \
214 ".balign 4\n" \
215 "4: .long 2b\n\t" \
216 ".previous\n" \
217 ".section __ex_table,\"a\"\n\t" \
218 ".long 1b, 3b\n\t" \
219 ".previous" \
220 : "=r" (retval) \
221 : "r" (val), "m" (__m(addr)), "i" (-EFAULT), "0" (retval) \
222 : "memory"); })
223#endif
224
225extern void __put_user_unknown(void);
226
227#endif /* __ASM_SH_UACCESS_32_H */