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| author | iap10@labyrinth.cl.cam.ac.uk <iap10@labyrinth.cl.cam.ac.uk> | 2003-02-24 16:55:07 +0000 |
|---|---|---|
| committer | iap10@labyrinth.cl.cam.ac.uk <iap10@labyrinth.cl.cam.ac.uk> | 2003-02-24 16:55:07 +0000 |
| commit | a48212cb65e09669ed243581556529681cebba0a (patch) | |
| tree | a58f47e4764f343db87eba48d17ce9b2ddbf8047 /xenolinux-2.4.21-pre4-sparse/arch/xeno/lib/strstr.c | |
| parent | 96ce9e11d148a721557d48ed5a8ca7857a7bc937 (diff) | |
| download | xen-a48212cb65e09669ed243581556529681cebba0a.tar.gz xen-a48212cb65e09669ed243581556529681cebba0a.tar.bz2 xen-a48212cb65e09669ed243581556529681cebba0a.zip | |
bitkeeper revision 1.93 (3e5a4e6bkPheUp3x1uufN2MS3LAB7A)
Latest and Greatest version of XenoLinux based on the Linux-2.4.21-pre4
kernel.
Diffstat (limited to 'xenolinux-2.4.21-pre4-sparse/arch/xeno/lib/strstr.c')
| -rw-r--r-- | xenolinux-2.4.21-pre4-sparse/arch/xeno/lib/strstr.c | 31 |
1 files changed, 31 insertions, 0 deletions
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 <linux/string.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; +} + |