libkcrt's Introduction

libkcrt

libkcrt provides an easy way to use C Run-time Library from Windows Kernel exported from ntdll.dll in your user-mode applications.

I suggest you use VC-LTL for non-special cases, not the libkcrt.

Under Construction

Todo list

Add basic memory allocation support for C and C++.
Without defining the entry point manually.
Add static variable initialization support.

Known Issues

Run-Time Error Checks (/RTC) is not supported.
C++ Exception Handling is not supported.

Available CRT Functions

Column 1	Column 2	Column 3	Column 4	Column 5	Column 6
__isascii	_strnicmp	atan	iswdigit	strchr	vsprintf
__iscsym	_strupr	atoi	iswlower	strcmp	wcscat
__iscsymf	_swprintf	atol	iswspace	strcpy	wcschr
__toascii	_ui64toa	bsearch	iswxdigit	strcspn	wcscmp
_atoi64	_ui64tow	ceil	isxdigit	strlen	wcscpy
_i64toa	_ultoa	cos	labs	strncat	wcscspn
_i64tow	_ultow	fabs	log	strncmp	wcslen
_itoa	_vscwprintf	floor	mbstowcs	strncpy	wcsncat
_itow	_vsnprintf	isalnum	memchr	strpbrk	wcsncmp
_lfind	_vsnwprintf	isalpha	memcmp	strrchr	wcsncpy
_ltoa	_vswprintf	iscntrl	memcpy	strspn	wcspbrk
_ltow	_wcsicmp	isdigit	memmove	strstr	wcsrchr
_memccpy	_wcslwr	isgraph	memset	strtol	wcsspn
_memicmp	_wcsnicmp	islower	pow	strtoul	wcsstr
_snprintf	_wcstoui64	isprint	qsort	swprintf	wcstol
_snwprintf	_wcsupr	ispunct	sin	tan	wcstombs
_splitpath	_wtoi	isspace	sprintf	tolower	wcstoul
_strcmpi	_wtoi64	isupper	sqrt	toupper
_stricmp	_wtol	iswalpha	sscanf	towlower
_strlwr	abs	iswctype	strcat	towupper

License

libkcrt is distributed under the MIT License.

But the object files in the source directory are extracted from Windows Software Development Kit (BufferOverflow.lib), Windows Driver Kit (ntdllp.lib) and Visual Studio (libcmt.lib), you need to comply with their licenses too.