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-rw-r--r--arch/sparc/include/asm/uaccess_64.h248
1 files changed, 144 insertions, 104 deletions
diff --git a/arch/sparc/include/asm/uaccess_64.h b/arch/sparc/include/asm/uaccess_64.h
index b80866d90768..12d95947636b 100644
--- a/arch/sparc/include/asm/uaccess_64.h
+++ b/arch/sparc/include/asm/uaccess_64.h
@@ -41,11 +41,11 @@
41#define get_fs() ((mm_segment_t){(current_thread_info()->current_ds)}) 41#define get_fs() ((mm_segment_t){(current_thread_info()->current_ds)})
42#define get_ds() (KERNEL_DS) 42#define get_ds() (KERNEL_DS)
43 43
44#define segment_eq(a,b) ((a).seg == (b).seg) 44#define segment_eq(a, b) ((a).seg == (b).seg)
45 45
46#define set_fs(val) \ 46#define set_fs(val) \
47do { \ 47do { \
48 current_thread_info()->current_ds =(val).seg; \ 48 current_thread_info()->current_ds = (val).seg; \
49 __asm__ __volatile__ ("wr %%g0, %0, %%asi" : : "r" ((val).seg)); \ 49 __asm__ __volatile__ ("wr %%g0, %0, %%asi" : : "r" ((val).seg)); \
50} while(0) 50} while(0)
51 51
@@ -88,121 +88,161 @@ void __retl_efault(void);
88 * of a performance impact. Thus we have a few rather ugly macros here, 88 * of a performance impact. Thus we have a few rather ugly macros here,
89 * and hide all the ugliness from the user. 89 * and hide all the ugliness from the user.
90 */ 90 */
91#define put_user(x,ptr) ({ \ 91#define put_user(x, ptr) ({ \
92unsigned long __pu_addr = (unsigned long)(ptr); \ 92 unsigned long __pu_addr = (unsigned long)(ptr); \
93__chk_user_ptr(ptr); \ 93 __chk_user_ptr(ptr); \
94__put_user_nocheck((__typeof__(*(ptr)))(x),__pu_addr,sizeof(*(ptr))); }) 94 __put_user_nocheck((__typeof__(*(ptr)))(x), __pu_addr, sizeof(*(ptr)));\
95})
95 96
96#define get_user(x,ptr) ({ \ 97#define get_user(x, ptr) ({ \
97unsigned long __gu_addr = (unsigned long)(ptr); \ 98 unsigned long __gu_addr = (unsigned long)(ptr); \
98__chk_user_ptr(ptr); \ 99 __chk_user_ptr(ptr); \
99__get_user_nocheck((x),__gu_addr,sizeof(*(ptr)),__typeof__(*(ptr))); }) 100 __get_user_nocheck((x), __gu_addr, sizeof(*(ptr)), __typeof__(*(ptr)));\
101})
100 102
101#define __put_user(x,ptr) put_user(x,ptr) 103#define __put_user(x, ptr) put_user(x, ptr)
102#define __get_user(x,ptr) get_user(x,ptr) 104#define __get_user(x, ptr) get_user(x, ptr)
103 105
104struct __large_struct { unsigned long buf[100]; }; 106struct __large_struct { unsigned long buf[100]; };
105#define __m(x) ((struct __large_struct *)(x)) 107#define __m(x) ((struct __large_struct *)(x))
106 108
107#define __put_user_nocheck(data,addr,size) ({ \ 109#define __put_user_nocheck(data, addr, size) ({ \
108register int __pu_ret; \ 110 register int __pu_ret; \
109switch (size) { \ 111 switch (size) { \
110case 1: __put_user_asm(data,b,addr,__pu_ret); break; \ 112 case 1: \
111case 2: __put_user_asm(data,h,addr,__pu_ret); break; \ 113 __put_user_asm(data, b, addr, __pu_ret); \
112case 4: __put_user_asm(data,w,addr,__pu_ret); break; \ 114 break; \
113case 8: __put_user_asm(data,x,addr,__pu_ret); break; \ 115 case 2: \
114default: __pu_ret = __put_user_bad(); break; \ 116 __put_user_asm(data, h, addr, __pu_ret); \
115} __pu_ret; }) 117 break; \
116 118 case 4: \
117#define __put_user_asm(x,size,addr,ret) \ 119 __put_user_asm(data, w, addr, __pu_ret); \
120 break; \
121 case 8: \
122 __put_user_asm(data, x, addr, __pu_ret); \
123 break; \
124 default: \
125 __pu_ret = __put_user_bad(); \
126 break; \
127 } \
128 __pu_ret; \
129})
130
131#define __put_user_asm(x, size, addr, ret) \
118__asm__ __volatile__( \ 132__asm__ __volatile__( \
119 "/* Put user asm, inline. */\n" \ 133 "/* Put user asm, inline. */\n" \
120"1:\t" "st"#size "a %1, [%2] %%asi\n\t" \ 134 "1:\t" "st"#size "a %1, [%2] %%asi\n\t" \
121 "clr %0\n" \ 135 "clr %0\n" \
122"2:\n\n\t" \ 136 "2:\n\n\t" \
123 ".section .fixup,#alloc,#execinstr\n\t" \ 137 ".section .fixup,#alloc,#execinstr\n\t" \
124 ".align 4\n" \ 138 ".align 4\n" \
125"3:\n\t" \ 139 "3:\n\t" \
126 "sethi %%hi(2b), %0\n\t" \ 140 "sethi %%hi(2b), %0\n\t" \
127 "jmpl %0 + %%lo(2b), %%g0\n\t" \ 141 "jmpl %0 + %%lo(2b), %%g0\n\t" \
128 " mov %3, %0\n\n\t" \ 142 " mov %3, %0\n\n\t" \
129 ".previous\n\t" \ 143 ".previous\n\t" \
130 ".section __ex_table,\"a\"\n\t" \ 144 ".section __ex_table,\"a\"\n\t" \
131 ".align 4\n\t" \ 145 ".align 4\n\t" \
132 ".word 1b, 3b\n\t" \ 146 ".word 1b, 3b\n\t" \
133 ".previous\n\n\t" \ 147 ".previous\n\n\t" \
134 : "=r" (ret) : "r" (x), "r" (__m(addr)), \ 148 : "=r" (ret) : "r" (x), "r" (__m(addr)), \
135 "i" (-EFAULT)) 149 "i" (-EFAULT))
136 150
137int __put_user_bad(void); 151int __put_user_bad(void);
138 152
139#define __get_user_nocheck(data,addr,size,type) ({ \ 153#define __get_user_nocheck(data, addr, size, type) ({ \
140register int __gu_ret; \ 154 register int __gu_ret; \
141register unsigned long __gu_val; \ 155 register unsigned long __gu_val; \
142switch (size) { \ 156 switch (size) { \
143case 1: __get_user_asm(__gu_val,ub,addr,__gu_ret); break; \ 157 case 1: \
144case 2: __get_user_asm(__gu_val,uh,addr,__gu_ret); break; \ 158 __get_user_asm(__gu_val, ub, addr, __gu_ret); \
145case 4: __get_user_asm(__gu_val,uw,addr,__gu_ret); break; \ 159 break; \
146case 8: __get_user_asm(__gu_val,x,addr,__gu_ret); break; \ 160 case 2: \
147default: __gu_val = 0; __gu_ret = __get_user_bad(); break; \ 161 __get_user_asm(__gu_val, uh, addr, __gu_ret); \
148} data = (__force type) __gu_val; __gu_ret; }) 162 break; \
149 163 case 4: \
150#define __get_user_nocheck_ret(data,addr,size,type,retval) ({ \ 164 __get_user_asm(__gu_val, uw, addr, __gu_ret); \
151register unsigned long __gu_val __asm__ ("l1"); \ 165 break; \
152switch (size) { \ 166 case 8: \
153case 1: __get_user_asm_ret(__gu_val,ub,addr,retval); break; \ 167 __get_user_asm(__gu_val, x, addr, __gu_ret); \
154case 2: __get_user_asm_ret(__gu_val,uh,addr,retval); break; \ 168 break; \
155case 4: __get_user_asm_ret(__gu_val,uw,addr,retval); break; \ 169 default: \
156case 8: __get_user_asm_ret(__gu_val,x,addr,retval); break; \ 170 __gu_val = 0; \
157default: if (__get_user_bad()) return retval; \ 171 __gu_ret = __get_user_bad(); \
158} data = (__force type) __gu_val; }) 172 break; \
159 173 } \
160#define __get_user_asm(x,size,addr,ret) \ 174 data = (__force type) __gu_val; \
175 __gu_ret; \
176})
177
178#define __get_user_nocheck_ret(data, addr, size, type, retval) ({ \
179 register unsigned long __gu_val __asm__ ("l1"); \
180 switch (size) { \
181 case 1: \
182 __get_user_asm_ret(__gu_val, ub, addr, retval); \
183 break; \
184 case 2: \
185 __get_user_asm_ret(__gu_val, uh, addr, retval); \
186 break; \
187 case 4: \
188 __get_user_asm_ret(__gu_val, uw, addr, retval); \
189 break; \
190 case 8: \
191 __get_user_asm_ret(__gu_val, x, addr, retval); \
192 break; \
193 default: \
194 if (__get_user_bad()) \
195 return retval; \
196 } \
197 data = (__force type) __gu_val; \
198})
199
200#define __get_user_asm(x, size, addr, ret) \
161__asm__ __volatile__( \ 201__asm__ __volatile__( \
162 "/* Get user asm, inline. */\n" \ 202 "/* Get user asm, inline. */\n" \
163"1:\t" "ld"#size "a [%2] %%asi, %1\n\t" \ 203 "1:\t" "ld"#size "a [%2] %%asi, %1\n\t" \
164 "clr %0\n" \ 204 "clr %0\n" \
165"2:\n\n\t" \ 205 "2:\n\n\t" \
166 ".section .fixup,#alloc,#execinstr\n\t" \ 206 ".section .fixup,#alloc,#execinstr\n\t" \
167 ".align 4\n" \ 207 ".align 4\n" \
168"3:\n\t" \ 208 "3:\n\t" \
169 "sethi %%hi(2b), %0\n\t" \ 209 "sethi %%hi(2b), %0\n\t" \
170 "clr %1\n\t" \ 210 "clr %1\n\t" \
171 "jmpl %0 + %%lo(2b), %%g0\n\t" \ 211 "jmpl %0 + %%lo(2b), %%g0\n\t" \
172 " mov %3, %0\n\n\t" \ 212 " mov %3, %0\n\n\t" \
173 ".previous\n\t" \ 213 ".previous\n\t" \
174 ".section __ex_table,\"a\"\n\t" \ 214 ".section __ex_table,\"a\"\n\t" \
175 ".align 4\n\t" \ 215 ".align 4\n\t" \
176 ".word 1b, 3b\n\n\t" \ 216 ".word 1b, 3b\n\n\t" \
177 ".previous\n\t" \ 217 ".previous\n\t" \
178 : "=r" (ret), "=r" (x) : "r" (__m(addr)), \ 218 : "=r" (ret), "=r" (x) : "r" (__m(addr)), \
179 "i" (-EFAULT)) 219 "i" (-EFAULT))
180 220
181#define __get_user_asm_ret(x,size,addr,retval) \ 221#define __get_user_asm_ret(x, size, addr, retval) \
182if (__builtin_constant_p(retval) && retval == -EFAULT) \ 222if (__builtin_constant_p(retval) && retval == -EFAULT) \
183__asm__ __volatile__( \ 223 __asm__ __volatile__( \
184 "/* Get user asm ret, inline. */\n" \ 224 "/* Get user asm ret, inline. */\n" \
185"1:\t" "ld"#size "a [%1] %%asi, %0\n\n\t" \ 225 "1:\t" "ld"#size "a [%1] %%asi, %0\n\n\t" \
186 ".section __ex_table,\"a\"\n\t" \ 226 ".section __ex_table,\"a\"\n\t" \
187 ".align 4\n\t" \ 227 ".align 4\n\t" \
188 ".word 1b,__ret_efault\n\n\t" \ 228 ".word 1b,__ret_efault\n\n\t" \
189 ".previous\n\t" \ 229 ".previous\n\t" \
190 : "=r" (x) : "r" (__m(addr))); \ 230 : "=r" (x) : "r" (__m(addr))); \
191else \ 231else \
192__asm__ __volatile__( \ 232 __asm__ __volatile__( \
193 "/* Get user asm ret, inline. */\n" \ 233 "/* Get user asm ret, inline. */\n" \
194"1:\t" "ld"#size "a [%1] %%asi, %0\n\n\t" \ 234 "1:\t" "ld"#size "a [%1] %%asi, %0\n\n\t" \
195 ".section .fixup,#alloc,#execinstr\n\t" \ 235 ".section .fixup,#alloc,#execinstr\n\t" \
196 ".align 4\n" \ 236 ".align 4\n" \
197"3:\n\t" \ 237 "3:\n\t" \
198 "ret\n\t" \ 238 "ret\n\t" \
199 " restore %%g0, %2, %%o0\n\n\t" \ 239 " restore %%g0, %2, %%o0\n\n\t" \
200 ".previous\n\t" \ 240 ".previous\n\t" \
201 ".section __ex_table,\"a\"\n\t" \ 241 ".section __ex_table,\"a\"\n\t" \
202 ".align 4\n\t" \ 242 ".align 4\n\t" \
203 ".word 1b, 3b\n\n\t" \ 243 ".word 1b, 3b\n\n\t" \
204 ".previous\n\t" \ 244 ".previous\n\t" \
205 : "=r" (x) : "r" (__m(addr)), "i" (retval)) 245 : "=r" (x) : "r" (__m(addr)), "i" (retval))
206 246
207int __get_user_bad(void); 247int __get_user_bad(void);
208 248
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