Andrew
42e77931bf
- Move source code from `trunk` into program root directory. - Update build files.
23 lines
565 B
C
23 lines
565 B
C
#include <string.h>
|
|
|
|
char* strncat(char* dst, const char* src, size_t n)
|
|
{
|
|
int d0, d1, d2, d3;
|
|
__asm__ __volatile__(
|
|
"repne\n\t"
|
|
"scasb\n\t"
|
|
"decl %1\n\t"
|
|
"movl %8,%3\n"
|
|
"1:\tdecl %3\n\t"
|
|
"js 2f\n\t"
|
|
"lodsb\n\t"
|
|
"stosb\n\t"
|
|
"testb %%al,%%al\n\t"
|
|
"jne 1b\n"
|
|
"2:\txorl %2,%2\n\t"
|
|
"stosb"
|
|
: "=&S"(d0), "=&D"(d1), "=&a"(d2), "=&c"(d3)
|
|
: "0"(src), "1"(dst), "2"(0), "3"(0xffffffff), "g"(n)
|
|
: "memory");
|
|
return dst;
|
|
} |