lib: Add initial libc

Signed-off-by: Ian Moffett <ian@osmora.org>

3 files changed, 170 insertions, 0 deletions

diff --git a/lib/libc/include/bits/types.h b/lib/libc/include/bits/types.h
new file mode 100644
index 0000000..6d319e8
--- /dev/null
+++ b/lib/libc/include/bits/types.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Hyra nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _BITS_TYPES_H
+#define _BITS_TYPES_H
+
+/* Fixed width integer types */
+typedef unsigned long       __size_t;
+typedef long                __ssize_t;
+typedef long                __ptrdiff_t;
+
+typedef unsigned char       __uint8_t;
+typedef unsigned short      __uint16_t;
+typedef unsigned int        __uint32_t;
+typedef unsigned long long  __uint64_t;
+
+typedef signed char         __int8_t;
+typedef short               __int16_t;
+typedef int                 __int32_t;
+typedef long long           __int64_t;
+
+/* Fixed width integer type limits */
+#define __INT8_MIN        (-0x7F - 1)
+#define __INT16_MIN       (-0x7FFF - 1)
+#define __INT32_MIN       (-0x7FFFFFFF - 1)
+#define __INT64_MIN       (-0x7FFFFFFFFFFFFFFFLL - 1)
+
+#define __INT8_MAX        0x7F
+#define __INT16_MAX       0x7FFF
+#define __INT32_MAX       0x7FFFFFFF
+#define __INT64_MAX       0x7FFFFFFFFFFFFFFFLL
+
+#define __UINT8_MAX       0xFF
+#define __UINT16_MAX      0xFFFF
+#define __UINT32_MAX      0xFFFFFFFFU
+#define __UINT64_MAX      0xFFFFFFFFFFFFFFFFULL
+
+#endif  /* !_BITS_TYPES_H */
diff --git a/lib/libc/include/stddef.h b/lib/libc/include/stddef.h
new file mode 100644
index 0000000..09566f4
--- /dev/null
+++ b/lib/libc/include/stddef.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Hyra nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _STDDEF_H
+#define _STDDEF_H
+
+#include <bits/types.h>
+
+#if __cplusplus >= 201103L
+#define NULL nullptr
+#elif defined(__cplusplus)
+#define NULL 0L
+#else
+#define NULL  ((void *) 0)
+#endif
+
+typedef __size_t size_t;
+
+#endif  /* !_STDDEF_H */
diff --git a/lib/libc/include/stdint.h b/lib/libc/include/stdint.h
new file mode 100644
index 0000000..5f61b18
--- /dev/null
+++ b/lib/libc/include/stdint.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Hyra nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _STDINT_H
+#define _STDINT_H
+
+#include <bits/types.h>
+
+typedef __uint8_t uint8_t;
+typedef __uint16_t uint16_t;
+typedef __uint32_t uint32_t;
+typedef __uint64_t uint64_t;
+typedef __size_t uintptr_t;
+
+typedef __int8_t int8_t;
+typedef __int16_t int16_t;
+typedef __int32_t int32_t;
+typedef __int64_t int64_t;
+
+#define INT8_MIN    __INT8_MIN
+#define INT16_MIN   __INT16_MIN
+#define INT32_MIN   __INT32_MIN
+#define INT64_MIN   __INT64_MIN
+
+#define INT8_MAX    __INT8_MAX
+#define INT16_MAX   __INT16_MAX
+#define INT32_MAX   __INT32_MAX
+#define INT64_MAX   __INT64_MAX
+
+#define UINT8_MAX    __UINT8_MAX
+#define UINT16_MAX   __UINT16_MAX
+#define UINT32_MAX   __UINT32_MAX
+#define UINT64_MAX   __UINT64_MAX
+
+#endif  /* !_STDINT_H */