Release 4.14 arch/x86/lib/strstr_32.c

// SPDX-License-Identifier: GPL-2.0
#include <linux/string.h>
#include <linux/export.h>



char *strstr(const char *cs, const char *ct)
{
int	d0, d1;
register char *__res;
__asm__ __volatile__(
        "movl %6,%%edi\n\t"
        "repne\n\t"
        "scasb\n\t"
        "notl %%ecx\n\t"
        "decl %%ecx\n\t"	/* NOTE! This also sets Z if searchstring='' */
	"movl %%ecx,%%edx\n"
        "1:\tmovl %6,%%edi\n\t"
        "movl %%esi,%%eax\n\t"
        "movl %%edx,%%ecx\n\t"
        "repe\n\t"
        "cmpsb\n\t"
        "je 2f\n\t"		/* also works for empty string, see above */
	"xchgl %%eax,%%esi\n\t"
        "incl %%esi\n\t"
        "cmpb $0,-1(%%eax)\n\t"
        "jne 1b\n\t"
        "xorl %%eax,%%eax\n\t"
        "2:"
        : "=a" (__res), "=&c" (d0), "=&S" (d1)
        : "0" (0), "1" (0xffffffff), "2" (cs), "g" (ct)
        : "dx", "di");
return __res;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds
35
97.22%
1
50.00%
Paolo Ciarrocchi
1
2.78%
1
50.00%
Total
36
100.00%
2
100.00%


EXPORT_SYMBOL(strstr);
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds
38
79.17%
1
25.00%
Al Viro
8
16.67%
1
25.00%
Paolo Ciarrocchi
1
2.08%
1
25.00%
Greg Kroah-Hartman
1
2.08%
1
25.00%
Total
48
100.00%
4
100.00%
Directory: arch/x86/lib

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