| Quellcodebibliothek Statistik Leitseite products/Sources/formale Sprachen/C/Linux/arch/x86/lib/ (Open Source Betriebssystem Version 6.17.9©) Datei vom 24.10.2025 mit Größe 744 B |
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Quelle strstr_32.c Sprache: C |
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// 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 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 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; } EXPORT_SYMBOL(strstr);
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2026-04-06