Feat: lab 4

kernel/include/utils.h

@@ -0,0 +1,38 @@
+#pragma once
+
+#include <stddef.h>
+#include <uart.h>
+
+uint32_t msb32(uint32_t);
+uint64_t msb64(uint64_t);
+
+uint32_t hton32(const uint32_t);
+uint32_t ntoh32(const uint32_t);
+
+uint64_t hton64(const uint64_t);
+uint64_t ntoh64(const uint64_t);
+
+int isdigit(int);
+int isxdigit(int);
+int isupper(int);
+int isspace(int);
+
+int32_t atoi32(const char *);
+uint32_t atoh32(const char *);
+
+void exit(int);
+
+#define MIN(x, y) (((x) < (y)) ? (x) : (y))
+#define MAX(x, y) (((x) < (y)) ? (y) : (x))
+
+#define ALIGN(ptr, cnt) (void *)((( \
+  ((uint64_t)(ptr) - 1) >> (cnt)) + 1) << (cnt))
+
+#define ALIGN4(ptr)  ALIGN(ptr, 2)
+#define ALIGN8(ptr)  ALIGN(ptr, 3)
+#define ALIGN4K(ptr) ALIGN(ptr, 12)
+
+#define BUMP(orig_type, bump_type, ptr) ( \
+  (ptr = (orig_type*)((bump_type*)ptr + 1)), \
+  ((bump_type*)ptr - 1) \
+)