Initial commit: SUB-OS 64-Bit Production Monolithic Operating System with LazyBox userland suite

include/lib/bitmap.h

@@ -0,0 +1,26 @@
+#ifndef _LIB_BITMAP_H
+#define _LIB_BITMAP_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdbool.h>
+
+typedef uint64_t bitmap_word_t;
+#define BITS_PER_WORD (sizeof(bitmap_word_t) * 8)
+
+static inline void bitmap_set(bitmap_word_t* map, size_t bit) {
+    map[bit / BITS_PER_WORD] |= ((bitmap_word_t)1 << (bit % BITS_PER_WORD));
+}
+
+static inline void bitmap_clear(bitmap_word_t* map, size_t bit) {
+    map[bit / BITS_PER_WORD] &= ~((bitmap_word_t)1 << (bit % BITS_PER_WORD));
+}
+
+static inline bool bitmap_test(const bitmap_word_t* map, size_t bit) {
+    return (map[bit / BITS_PER_WORD] & ((bitmap_word_t)1 << (bit % BITS_PER_WORD))) != 0;
+}
+
+int64_t bitmap_find_first_free(const bitmap_word_t* map, size_t total_bits);
+int64_t bitmap_find_contiguous_free(const bitmap_word_t* map, size_t total_bits, size_t count);
+
+#endif // _LIB_BITMAP_H

include/lib/list.h

@@ -0,0 +1,56 @@
+#ifndef _LIB_LIST_H
+#define _LIB_LIST_H
+
+#include <stddef.h>
+
+struct list_head {
+    struct list_head *next, *prev;
+};
+
+#define LIST_HEAD_INIT(name) { &(name), &(name) }
+#define LIST_HEAD(name) struct list_head name = LIST_HEAD_INIT(name)
+
+static inline void INIT_LIST_HEAD(struct list_head *list) {
+    list->next = list;
+    list->prev = list;
+}
+
+static inline void __list_add(struct list_head *new_node,
+                              struct list_head *prev,
+                              struct list_head *next) {
+    next->prev = new_node;
+    new_node->next = next;
+    new_node->prev = prev;
+    prev->next = new_node;
+}
+
+static inline void list_add(struct list_head *new_node, struct list_head *head) {
+    __list_add(new_node, head, head->next);
+}
+
+static inline void list_add_tail(struct list_head *new_node, struct list_head *head) {
+    __list_add(new_node, head->prev, head);
+}
+
+static inline void list_del(struct list_head *entry) {
+    entry->next->prev = entry->prev;
+    entry->prev->next = entry->next;
+    entry->next = NULL;
+    entry->prev = NULL;
+}
+
+static inline int list_empty(const struct list_head *head) {
+    return head->next == head;
+}
+
+#define list_entry(ptr, type, member) \
+    ((type *)((char *)(ptr) - offsetof(type, member)))
+
+#define list_for_each(pos, head) \
+    for (pos = (head)->next; pos != (head); pos = pos->next)
+
+#define list_for_each_safe(pos, n, head) \
+    for (pos = (head)->next, n = pos->next; pos != (head); \
+        pos = n, n = pos->next)
+
+#endif // _LIB_LIST_H

include/lib/printf.h

@@ -0,0 +1,12 @@
+#ifndef _LIB_PRINTF_H
+#define _LIB_PRINTF_H
+
+#include <stddef.h>
+#include <stdarg.h>
+
+int sprintf(char* buf, const char* fmt, ...);
+int snprintf(char* buf, size_t size, const char* fmt, ...);
+int vsprintf(char* buf, const char* fmt, va_list args);
+int vsnprintf(char* buf, size_t size, const char* fmt, va_list args);
+
+#endif // _LIB_PRINTF_H

include/lib/string.h

@@ -0,0 +1,33 @@
+#ifndef _LIB_STRING_H
+#define _LIB_STRING_H
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+// Memory functions
+void* memset(void* dest, int val, size_t count);
+void* memcpy(void* dest, const void* src, size_t count);
+void* memmove(void* dest, const void* src, size_t count);
+int   memcmp(const void* ptr1, const void* ptr2, size_t num);
+
+// String functions
+size_t strlen(const char* str);
+int    strcmp(const char* str1, const char* str2);
+int    strncmp(const char* str1, const char* str2, size_t num);
+char*  strcpy(char* dest, const char* src);
+char*  strncpy(char* dest, const char* src, size_t num);
+char*  strcat(char* dest, const char* src);
+char*  strncat(char* dest, const char* src, size_t num);
+char*  strchr(const char* str, int c);
+char*  strrchr(const char* str, int c);
+char*  strstr(const char* haystack, const char* needle);
+char*  strdup(const char* s);
+
+// Conversion functions
+char*  itoa(int value, char* str, int base);
+char*  itoa_hex(uint64_t value, char* str);
+int    atoi(const char* str);
+long   strtol(const char* str, char** endptr, int base);
+
+#endif // _LIB_STRING_H