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author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2016-12-16 09:31:17 -0800 |
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committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2016-12-16 09:31:17 -0800 |
commit | f26e8817b235d8764363bffcc9cbfc61867371f2 (patch) | |
tree | 6546ea2cf91b78f1ada2161db61e21085c880740 /arch/s390/lib/string.c | |
parent | 2425f1808123bf69a8f66d4ec90e0d0e302c2613 (diff) | |
parent | ebfb0184ef560897fad35005989e82433419202c (diff) | |
download | talos-op-linux-f26e8817b235d8764363bffcc9cbfc61867371f2.tar.gz talos-op-linux-f26e8817b235d8764363bffcc9cbfc61867371f2.zip |
Merge branch 'next' into for-linus
Prepare input updates for 4.10 merge window.
Diffstat (limited to 'arch/s390/lib/string.c')
-rw-r--r-- | arch/s390/lib/string.c | 42 |
1 files changed, 21 insertions, 21 deletions
diff --git a/arch/s390/lib/string.c b/arch/s390/lib/string.c index b647d5ff0ad9..48352bffbc92 100644 --- a/arch/s390/lib/string.c +++ b/arch/s390/lib/string.c @@ -236,6 +236,24 @@ char * strrchr(const char * s, int c) } EXPORT_SYMBOL(strrchr); +static inline int clcle(const char *s1, unsigned long l1, + const char *s2, unsigned long l2) +{ + register unsigned long r2 asm("2") = (unsigned long) s1; + register unsigned long r3 asm("3") = (unsigned long) l1; + register unsigned long r4 asm("4") = (unsigned long) s2; + register unsigned long r5 asm("5") = (unsigned long) l2; + int cc; + + asm volatile ("0: clcle %1,%3,0\n" + " jo 0b\n" + " ipm %0\n" + " srl %0,28" + : "=&d" (cc), "+a" (r2), "+a" (r3), + "+a" (r4), "+a" (r5) : : "cc"); + return cc; +} + /** * strstr - Find the first substring in a %NUL terminated string * @s1: The string to be searched @@ -250,18 +268,9 @@ char * strstr(const char * s1,const char * s2) return (char *) s1; l1 = __strend(s1) - s1; while (l1-- >= l2) { - register unsigned long r2 asm("2") = (unsigned long) s1; - register unsigned long r3 asm("3") = (unsigned long) l2; - register unsigned long r4 asm("4") = (unsigned long) s2; - register unsigned long r5 asm("5") = (unsigned long) l2; int cc; - asm volatile ("0: clcle %1,%3,0\n" - " jo 0b\n" - " ipm %0\n" - " srl %0,28" - : "=&d" (cc), "+a" (r2), "+a" (r3), - "+a" (r4), "+a" (r5) : : "cc" ); + cc = clcle(s1, l2, s2, l2); if (!cc) return (char *) s1; s1++; @@ -302,20 +311,11 @@ EXPORT_SYMBOL(memchr); */ int memcmp(const void *cs, const void *ct, size_t n) { - register unsigned long r2 asm("2") = (unsigned long) cs; - register unsigned long r3 asm("3") = (unsigned long) n; - register unsigned long r4 asm("4") = (unsigned long) ct; - register unsigned long r5 asm("5") = (unsigned long) n; int ret; - asm volatile ("0: clcle %1,%3,0\n" - " jo 0b\n" - " ipm %0\n" - " srl %0,28" - : "=&d" (ret), "+a" (r2), "+a" (r3), "+a" (r4), "+a" (r5) - : : "cc" ); + ret = clcle(cs, n, ct, n); if (ret) - ret = *(char *) r2 - *(char *) r4; + ret = ret == 1 ? -1 : 1; return ret; } EXPORT_SYMBOL(memcmp); |