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 */

SDK/CRT/STRING/mem.c

@@ -0,0 +1,53 @@
+/*++
+
+Copyright (c) 2024, Quinn Stephens.
+Provided under the BSD 3-Clause license.
+
+Module Name:
+
+   mem.c
+
+Abstract:
+
+   Provides memory manipulation routines.
+
+--*/
+
+#include <string.h>
+
+void *
+memset (
+    void *dest,
+    int c,
+    size_t count
+    )
+
+{
+    void *ptr = dest;
+
+    while (count--) {
+        *(char *)dest = (char)c;
+        dest = (char *)dest + 1;
+    }
+
+    return ptr;
+}
+
+void *
+memcpy (
+    void *dest,
+    const void *src,
+    size_t count
+    )
+
+{
+    void *ptr = dest;
+
+    while (count--) {
+        *(char *)dest = *(char *)src;
+        dest = (char *)dest + 1;
+        src = (char *)src + 1;
+    }
+
+    return ptr;
+}

SDK/CRT/STRING/str.c

@@ -0,0 +1,45 @@
+/*++
+
+Copyright (c) 2024, Quinn Stephens.
+Provided under the BSD 3-Clause license.
+
+Module Name:
+
+   str.c
+
+Abstract:
+
+   Provides string manipulation routines.
+
+--*/
+
+#include <string.h>
+
+size_t
+strlen (
+    const char *str
+    )
+
+{
+    const char *ptr;
+
+    ptr = str;
+    while (*ptr++);
+
+    return ptr - str - sizeof(char);
+}
+
+size_t
+strnlen (
+    const char *str,
+    size_t maxlen
+    )
+
+{
+    size_t len;
+
+    len = 0;
+    while (len < maxlen && str[len++]);
+
+    return len - sizeof(char);
+}

SDK/CRT/STRING/wmem.c

@@ -0,0 +1,53 @@
+/*++
+
+Copyright (c) 2024, Quinn Stephens.
+Provided under the BSD 3-Clause license.
+
+Module Name:
+
+   wmem.c
+
+Abstract:
+
+   Provides wide memory manipulation routines.
+
+--*/
+
+#include <wchar.h>
+
+wchar_t *
+wmemset (
+    wchar_t *dest,
+    wchar_t c,
+    size_t count
+    )
+
+{
+    void *ptr = dest;
+
+    while (count--) {
+        *(wchar_t *)dest = c;
+        dest = (wchar_t *)dest + 1;
+    }
+
+    return ptr;
+}
+
+wchar_t *
+wmemcpy (
+    wchar_t *dest,
+    const wchar_t *src,
+    size_t count
+    )
+
+{
+    void *ptr = dest;
+
+    while (count--) {
+        *(wchar_t *)dest = *(wchar_t *)src;
+        dest = (wchar_t *)dest + 1;
+        src = (wchar_t *)src + 1;
+    }
+
+    return ptr;
+}

SDK/CRT/STRING/wstr.c

@@ -0,0 +1,45 @@
+/*++
+
+Copyright (c) 2024, Quinn Stephens.
+Provided under the BSD 3-Clause license.
+
+Module Name:
+
+   wstr.c
+
+Abstract:
+
+   Provides wide string manipulation routines.
+
+--*/
+
+#include <wchar.h>
+
+size_t
+wcslen (
+    const wchar_t *str
+    )
+
+{
+    const wchar_t *ptr;
+
+    ptr = str;
+    while (*ptr++);
+
+    return (const char*)ptr - (const char*)str - sizeof(wchar_t);
+}
+
+size_t
+wcsnlen (
+    const wchar_t *str,
+    size_t maxlen
+    )
+
+{
+    size_t len;
+
+    len = 0;
+    while (len < maxlen && str[len++]);
+
+    return len - sizeof(wchar_t);
+}