Add SDK/CRT string routines and headers

SDK/CRT/INC/stddef.h

@@ -0,0 +1,60 @@
+/*++
+
+Copyright (c) 2024, Quinn Stephens.
+Provided under the BSD 3-Clause license.
+
+Module Name:
+
+   stddef.h
+
+Abstract:
+
+   Provides standard types and definitions.
+
+--*/
+
+#pragma once
+
+#ifndef _STDDEF_H
+#define _STDDEF_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef NULL
+#ifdef __cplusplus
+#define NULL 0
+#else
+#define NULL ((void*)0)
+#endif
+#endif
+
+#ifndef _SIZE_T_DEFINED
+#define _SIZE_T_DEFINED
+#ifdef _WIN64
+typedef unsigned __int64 size_t;
+#else
+typedef unsigned int size_t;
+#endif
+#endif
+
+#ifndef _PTRDIFF_T_DEFINED
+#define _PTRDIFF_T_DEFINED
+#ifdef _WIN64
+typedef __int64 ptrdiff_t;
+#else
+typedef long int ptrdiff_t;
+#endif
+#endif
+
+#ifndef _WCHAR_T_DEFINED
+#define _WCHAR_T_DEFINED
+typedef unsigned short wchar_t;
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* !_STDDEF_H */

SDK/CRT/INC/string.h

@@ -0,0 +1,37 @@
+/*++
+
+Copyright (c) 2024, Quinn Stephens.
+Provided under the BSD 3-Clause license.
+
+Module Name:
+
+   string.h
+
+Abstract:
+
+   Provides definitions for string routines.
+
+--*/
+
+#pragma once
+
+#ifndef _STRING_H
+#define _STRING_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stddef.h>
+
+size_t strlen(const char *str);
+size_t strnlen(const char *str, size_t maxlen);
+
+void *memset(void *dest, int c, size_t count);
+void *memcpy(void *dest, const void *src, size_t count);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* !_STRING_H */

SDK/CRT/INC/wchar.h

@@ -0,0 +1,37 @@
+/*++
+
+Copyright (c) 2024, Quinn Stephens.
+Provided under the BSD 3-Clause license.
+
+Module Name:
+
+   wchar.h
+
+Abstract:
+
+   Provides definitions for wide string routines.
+
+--*/
+
+#pragma once
+
+#ifndef _WCHAR_H
+#define _WCHAR_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <string.h>
+
+size_t wcslen(const wchar_t *str);
+size_t wcsnlen(const wchar_t *str, size_t maxlen);
+
+wchar_t *wmemset(wchar_t *dest, wchar_t c, size_t count);
+wchar_t *wmemcpy(wchar_t *dest, const wchar_t *src, size_t count);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* !_WCHAR_H */