1#include <linux/string.h>
2
3char * strstr(const char * cs,const char * ct)
4{
5int	d0, d1;
6register char * __res;
7__asm__ __volatile__(
8	"movl %6,%%edi\n\t"
9	"repne\n\t"
10	"scasb\n\t"
11	"notl %%ecx\n\t"
12	"decl %%ecx\n\t"	/* NOTE! This also sets Z if searchstring='' */
13	"movl %%ecx,%%edx\n"
14	"1:\tmovl %6,%%edi\n\t"
15	"movl %%esi,%%eax\n\t"
16	"movl %%edx,%%ecx\n\t"
17	"repe\n\t"
18	"cmpsb\n\t"
19	"je 2f\n\t"		/* also works for empty string, see above */
20	"xchgl %%eax,%%esi\n\t"
21	"incl %%esi\n\t"
22	"cmpb $0,-1(%%eax)\n\t"
23	"jne 1b\n\t"
24	"xorl %%eax,%%eax\n\t"
25	"2:"
26	:"=a" (__res), "=&c" (d0), "=&S" (d1)
27	:"0" (0), "1" (0xffffffff), "2" (cs), "g" (ct)
28	:"dx", "di");
29return __res;
30}
31
32