Created lib file structure

lib/Makefile

@@ -0,0 +1,41 @@
+# Stand-alone directories present in lib/.
+
+SO_DIR := so/
+INC_DIR := include/
+
+# Directories containing actual code for libraries.
+
+LIB_DIR = $(wildcard */)
+LIB_DIR := $(filter-out $(SO_DIR), $(LIB_DIR))
+LIB_DIR := $(filter-out $(INC_DIR), $(LIB_DIR))
+
+# Library objects.
+
+LIB_OBJ = $(foreach TMP, $(LIB_DIR), $(wildcard $(TMP)/lobj/*))
+
+# Name of the resulted shared object.
+
+SO := libklib.a
+
+# Archiver
+
+AR = ar
+ARFLAGS = rcs
+
+all: rbuild
+	$(AR) $(ARFLAGS) $(SO_DIR)/$(SO) $(LIB_OBJ)
+
+# Build all libraries recursively.
+
+rbuild:
+	for dir in $(LIB_DIR); do \
+		$(MAKE) -C $$dir; \
+	done
+
+# Clean all libraries recursively.
+
+clean:
+	for dir in $(LIB_DIR); do \
+		$(MAKE) -C $$dir clean; \
+	done
+	@$(RM) -rv $(SO_DIR)/$(SO)

lib/include/memio.h

@@ -0,0 +1,6 @@
+#ifndef IO_H_
+#define IO_H_
+
+void mio_out(unsigned short port, unsigned char data);
+
+#endif

lib/include/vga.h

@@ -0,0 +1,63 @@
+#ifndef VGA_H_
+#define VGA_H_
+
+/*
+ * Definition of an enum type that contains codes for each VGA color.
+ *
+ */
+
+enum vga_color {
+
+    VGA_COLOR_BLACK,
+    VGA_COLOR_BLUE,
+    VGA_COLOR_GREEN,
+    VGA_COLOR_CYAN,
+    VGA_COLOR_RED,
+    VGA_COLOR_MAGENTA,
+    VGA_COLOR_BROWN,
+    VGA_COLOR_LIGHT_GREY,
+    VGA_COLOR_DARK_GREY,
+    VGA_COLOR_LIGHT_BLUE,
+    VGA_COLOR_LIGHT_GREEN,
+    VGA_COLOR_LIGHT_CYAN,
+    VGA_COLOR_LIGHT_RED,
+    VGA_COLOR_LIGHT_MAGENTA,
+    VGA_COLOR_LIGHT_BROWN,
+    VGA_COLOR_WHITE,
+
+};
+
+/*
+ * Use the classic 80x25 mode for screen size.
+ *
+ */
+
+static const unsigned VGA_WIDTH  = 80;
+static const unsigned VGA_HEIGHT = 25;
+
+/*
+ * vga_entry_color:
+ *  Creates a VGA color encoding by combining foreground and background colors.
+ *
+ * @param fg - Foreground color
+ * @param bg - Background color
+ * @return   - Combined encoding
+ *
+ */
+
+unsigned char vga_entry_color(enum vga_color fg, enum vga_color bg);
+
+/*
+ * vga_entry:
+ *  Creates a VGA entry from the character @c and the color associated with 
+ *  it, @color.
+ *
+ * @param c     - Character
+ * @param color - Color of the character
+ * @return      - VGA entry
+ *
+ */
+
+unsigned short vga_entry(unsigned char c, unsigned char color);
+
+#endif