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https://mirrors.bfsu.edu.cn/git/linux.git
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f73920cd63
Before:
total: 3 errors, 0 warnings, 31 lines checked
After:
total: 0 errors, 0 warnings, 31 lines checked
No code changed:
arch/x86/lib/strstr_32.o:
text data bss dec hex filename
49 0 0 49 31 strstr_32.o.before
49 0 0 49 31 strstr_32.o.after
md5:
a224a7c4082e75a4f31f9d91dd34fe8e strstr_32.o.before.asm
a224a7c4082e75a4f31f9d91dd34fe8e strstr_32.o.after.asm
Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
32 lines
671 B
C
32 lines
671 B
C
#include <linux/string.h>
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char *strstr(const char *cs, const char *ct)
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{
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int d0, d1;
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register char *__res;
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__asm__ __volatile__(
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"movl %6,%%edi\n\t"
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"repne\n\t"
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"scasb\n\t"
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"notl %%ecx\n\t"
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"decl %%ecx\n\t" /* NOTE! This also sets Z if searchstring='' */
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"movl %%ecx,%%edx\n"
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"1:\tmovl %6,%%edi\n\t"
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"movl %%esi,%%eax\n\t"
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"movl %%edx,%%ecx\n\t"
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"repe\n\t"
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"cmpsb\n\t"
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"je 2f\n\t" /* also works for empty string, see above */
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"xchgl %%eax,%%esi\n\t"
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"incl %%esi\n\t"
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"cmpb $0,-1(%%eax)\n\t"
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"jne 1b\n\t"
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"xorl %%eax,%%eax\n\t"
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"2:"
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:"=a" (__res), "=&c" (d0), "=&S" (d1)
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:"0" (0), "1" (0xffffffff), "2" (cs), "g" (ct)
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:"dx", "di");
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return __res;
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}
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