kolibrios/programs/develop/ktcc/trunk/libc.obj/source/string/strcat.c
turbocat cde4fa851d libc.obj:
- Formatted by clang-format (WebKit-style).
- Removed unnecessary errno linux. 
- Added KOS error codes. 
- String functions have been replaced with more optimal ones for x86. 
- Changed wrappers for 70 sysfunction.

git-svn-id: svn://kolibrios.org@9765 a494cfbc-eb01-0410-851d-a64ba20cac60
2022-04-15 09:00:55 +00:00

18 lines
427 B
C

#include <string.h>
char* strcat(char* s, const char* append)
{
int d0, d1, d2, d3;
__asm__ __volatile__(
"repne\n\t"
"scasb\n\t"
"decl %1\n"
"1:\tlodsb\n\t"
"stosb\n\t"
"testb %%al,%%al\n\t"
"jne 1b"
: "=&S"(d0), "=&D"(d1), "=&a"(d2), "=&c"(d3)
: "0"(append), "1"(s), "2"(0), "3"(0xffffffff)
: "memory");
return s;
}