From a48212cb65e09669ed243581556529681cebba0a Mon Sep 17 00:00:00 2001 From: "iap10@labyrinth.cl.cam.ac.uk" Date: Mon, 24 Feb 2003 16:55:07 +0000 Subject: bitkeeper revision 1.93 (3e5a4e6bkPheUp3x1uufN2MS3LAB7A) Latest and Greatest version of XenoLinux based on the Linux-2.4.21-pre4 kernel. --- .../arch/xeno/lib/strstr.c | 31 ++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 xenolinux-2.4.21-pre4-sparse/arch/xeno/lib/strstr.c (limited to 'xenolinux-2.4.21-pre4-sparse/arch/xeno/lib/strstr.c') diff --git a/xenolinux-2.4.21-pre4-sparse/arch/xeno/lib/strstr.c b/xenolinux-2.4.21-pre4-sparse/arch/xeno/lib/strstr.c new file mode 100644 index 0000000000..a3dafbf59d --- /dev/null +++ b/xenolinux-2.4.21-pre4-sparse/arch/xeno/lib/strstr.c @@ -0,0 +1,31 @@ +#include + +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; +} + -- cgit v1.2.3