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-rw-r--r--include/asm-mips/checksum.h159
1 files changed, 81 insertions, 78 deletions
diff --git a/include/asm-mips/checksum.h b/include/asm-mips/checksum.h
index c1ea5a8714f3..b09f8971e95d 100644
--- a/include/asm-mips/checksum.h
+++ b/include/asm-mips/checksum.h
@@ -34,8 +34,9 @@ unsigned int csum_partial(const unsigned char *buff, int len, unsigned int sum);
34 * this is a new version of the above that records errors it finds in *errp, 34 * this is a new version of the above that records errors it finds in *errp,
35 * but continues and zeros the rest of the buffer. 35 * but continues and zeros the rest of the buffer.
36 */ 36 */
37unsigned int csum_partial_copy_from_user(const unsigned char *src, unsigned char *dst, int len, 37unsigned int csum_partial_copy_from_user(const unsigned char __user *src,
38 unsigned int sum, int *errp); 38 unsigned char *dst, int len,
39 unsigned int sum, int *errp);
39 40
40/* 41/*
41 * Copy and checksum to user 42 * Copy and checksum to user
@@ -70,14 +71,15 @@ unsigned int csum_partial_copy_nocheck(const unsigned char *src, unsigned char *
70static inline unsigned short int csum_fold(unsigned int sum) 71static inline unsigned short int csum_fold(unsigned int sum)
71{ 72{
72 __asm__( 73 __asm__(
73 ".set\tnoat\t\t\t# csum_fold\n\t" 74 " .set push # csum_fold\n"
74 "sll\t$1,%0,16\n\t" 75 " .set noat \n"
75 "addu\t%0,$1\n\t" 76 " sll $1, %0, 16 \n"
76 "sltu\t$1,%0,$1\n\t" 77 " addu %0, $1 \n"
77 "srl\t%0,%0,16\n\t" 78 " sltu $1, %0, $1 \n"
78 "addu\t%0,$1\n\t" 79 " srl %0, %0, 16 \n"
79 "xori\t%0,0xffff\n\t" 80 " addu %0, $1 \n"
80 ".set\tat" 81 " xori %0, 0xffff \n"
82 " .set pop"
81 : "=r" (sum) 83 : "=r" (sum)
82 : "0" (sum)); 84 : "0" (sum));
83 85
@@ -127,29 +129,30 @@ static inline unsigned int csum_tcpudp_nofold(unsigned long saddr,
127 unsigned int sum) 129 unsigned int sum)
128{ 130{
129 __asm__( 131 __asm__(
130 ".set\tnoat\t\t\t# csum_tcpudp_nofold\n\t" 132 " .set push # csum_tcpudp_nofold\n"
133 " .set noat \n"
131#ifdef CONFIG_32BIT 134#ifdef CONFIG_32BIT
132 "addu\t%0, %2\n\t" 135 " addu %0, %2 \n"
133 "sltu\t$1, %0, %2\n\t" 136 " sltu $1, %0, %2 \n"
134 "addu\t%0, $1\n\t" 137 " addu %0, $1 \n"
135 138
136 "addu\t%0, %3\n\t" 139 " addu %0, %3 \n"
137 "sltu\t$1, %0, %3\n\t" 140 " sltu $1, %0, %3 \n"
138 "addu\t%0, $1\n\t" 141 " addu %0, $1 \n"
139 142
140 "addu\t%0, %4\n\t" 143 " addu %0, %4 \n"
141 "sltu\t$1, %0, %4\n\t" 144 " sltu $1, %0, %4 \n"
142 "addu\t%0, $1\n\t" 145 " addu %0, $1 \n"
143#endif 146#endif
144#ifdef CONFIG_64BIT 147#ifdef CONFIG_64BIT
145 "daddu\t%0, %2\n\t" 148 " daddu %0, %2 \n"
146 "daddu\t%0, %3\n\t" 149 " daddu %0, %3 \n"
147 "daddu\t%0, %4\n\t" 150 " daddu %0, %4 \n"
148 "dsll32\t$1, %0, 0\n\t" 151 " dsll32 $1, %0, 0 \n"
149 "daddu\t%0, $1\n\t" 152 " daddu %0, $1 \n"
150 "dsrl32\t%0, %0, 0\n\t" 153 " dsra32 %0, %0, 0 \n"
151#endif 154#endif
152 ".set\tat" 155 " .set pop"
153 : "=r" (sum) 156 : "=r" (sum)
154 : "0" (daddr), "r"(saddr), 157 : "0" (daddr), "r"(saddr),
155#ifdef __MIPSEL__ 158#ifdef __MIPSEL__
@@ -192,57 +195,57 @@ static __inline__ unsigned short int csum_ipv6_magic(struct in6_addr *saddr,
192 unsigned int sum) 195 unsigned int sum)
193{ 196{
194 __asm__( 197 __asm__(
195 ".set\tpush\t\t\t# csum_ipv6_magic\n\t" 198 " .set push # csum_ipv6_magic\n"
196 ".set\tnoreorder\n\t" 199 " .set noreorder \n"
197 ".set\tnoat\n\t" 200 " .set noat \n"
198 "addu\t%0, %5\t\t\t# proto (long in network byte order)\n\t" 201 " addu %0, %5 # proto (long in network byte order)\n"
199 "sltu\t$1, %0, %5\n\t" 202 " sltu $1, %0, %5 \n"
200 "addu\t%0, $1\n\t" 203 " addu %0, $1 \n"
201 204
202 "addu\t%0, %6\t\t\t# csum\n\t" 205 " addu %0, %6 # csum\n"
203 "sltu\t$1, %0, %6\n\t" 206 " sltu $1, %0, %6 \n"
204 "lw\t%1, 0(%2)\t\t\t# four words source address\n\t" 207 " lw %1, 0(%2) # four words source address\n"
205 "addu\t%0, $1\n\t" 208 " addu %0, $1 \n"
206 "addu\t%0, %1\n\t" 209 " addu %0, %1 \n"
207 "sltu\t$1, %0, %1\n\t" 210 " sltu $1, %0, %1 \n"
208 211
209 "lw\t%1, 4(%2)\n\t" 212 " lw %1, 4(%2) \n"
210 "addu\t%0, $1\n\t" 213 " addu %0, $1 \n"
211 "addu\t%0, %1\n\t" 214 " addu %0, %1 \n"
212 "sltu\t$1, %0, %1\n\t" 215 " sltu $1, %0, %1 \n"
213 216
214 "lw\t%1, 8(%2)\n\t" 217 " lw %1, 8(%2) \n"
215 "addu\t%0, $1\n\t" 218 " addu %0, $1 \n"
216 "addu\t%0, %1\n\t" 219 " addu %0, %1 \n"
217 "sltu\t$1, %0, %1\n\t" 220 " sltu $1, %0, %1 \n"
218 221
219 "lw\t%1, 12(%2)\n\t" 222 " lw %1, 12(%2) \n"
220 "addu\t%0, $1\n\t" 223 " addu %0, $1 \n"
221 "addu\t%0, %1\n\t" 224 " addu %0, %1 \n"
222 "sltu\t$1, %0, %1\n\t" 225 " sltu $1, %0, %1 \n"
223 226
224 "lw\t%1, 0(%3)\n\t" 227 " lw %1, 0(%3) \n"
225 "addu\t%0, $1\n\t" 228 " addu %0, $1 \n"
226 "addu\t%0, %1\n\t" 229 " addu %0, %1 \n"
227 "sltu\t$1, %0, %1\n\t" 230 " sltu $1, %0, %1 \n"
228 231
229 "lw\t%1, 4(%3)\n\t" 232 " lw %1, 4(%3) \n"
230 "addu\t%0, $1\n\t" 233 " addu %0, $1 \n"
231 "addu\t%0, %1\n\t" 234 " addu %0, %1 \n"
232 "sltu\t$1, %0, %1\n\t" 235 " sltu $1, %0, %1 \n"
233 236
234 "lw\t%1, 8(%3)\n\t" 237 " lw %1, 8(%3) \n"
235 "addu\t%0, $1\n\t" 238 " addu %0, $1 \n"
236 "addu\t%0, %1\n\t" 239 " addu %0, %1 \n"
237 "sltu\t$1, %0, %1\n\t" 240 " sltu $1, %0, %1 \n"
238 241
239 "lw\t%1, 12(%3)\n\t" 242 " lw %1, 12(%3) \n"
240 "addu\t%0, $1\n\t" 243 " addu %0, $1 \n"
241 "addu\t%0, %1\n\t" 244 " addu %0, %1 \n"
242 "sltu\t$1, %0, %1\n\t" 245 " sltu $1, %0, %1 \n"
243 246
244 "addu\t%0, $1\t\t\t# Add final carry\n\t" 247 " addu %0, $1 # Add final carry\n"
245 ".set\tpop" 248 " .set pop"
246 : "=r" (sum), "=r" (proto) 249 : "=r" (sum), "=r" (proto)
247 : "r" (saddr), "r" (daddr), 250 : "r" (saddr), "r" (daddr),
248 "0" (htonl(len)), "1" (htonl(proto)), "r" (sum)); 251 "0" (htonl(len)), "1" (htonl(proto)), "r" (sum));
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-07 05:41:14 -0500