Initial update - fixed broken files, dependencies on outside libraries, \nThe system will now compile under 'make all', and no errors are thrown.\nThe system itself hasn't been tested, yet. Here goes...

arch/i386/boot.s

@@ -19,6 +19,7 @@ stack_top:
 .section .text
 .global _start
 .type _start, @function
+
 _start:
 	movl $stack_top, %esp
 	

arch/i386/crti.s

@@ -1,6 +1,5 @@
 .section .init
 .global _init
-
 .type _init, @function
 
 _init:
@@ -13,4 +12,4 @@ _init:
 
 _fini:
 	push %ebp
-	movl %esp, %ebp
+	movl %esp, %ebp

arch/i386/crtn.s

@@ -4,4 +4,4 @@
 
 .section .fini
 	popl %ebp
-	ret
+	ret

arch/i386/linker.ld

@@ -1,3 +1,4 @@
+
 ENTRY(_start)
 
 SECTIONS
@@ -16,7 +17,7 @@ SECTIONS
 		*(.rodata)
 	}
 	
-	.data BLOCK(4K : ALIGN(4K)
+	.data BLOCK(4K) : ALIGN(4K)
 	{
 		*(.data)
 	}

arch/i386/make.config

@@ -3,6 +3,6 @@ KERNEL_ARCH_CPPFLAGS=
 KERNEL_ARCH_LDFLAGS=
 KERNEL_ARCH_LIBS=
 
-KERNEL_ARCH_OBKS=\
+KERNEL_ARCH_OBJS= \
-$(ARCHDIR)/boot.o\
+$(ARCHDIR)/boot.o \
-$(ARCHDIR)/tty.o\
+$(ARCHDIR)/tty.o  

arch/i386/tty.c

@@ -4,7 +4,7 @@
 #include <string.h>
 
 #include <kernel/tty.h>
-#include "vga.h"
+#include <kernel/utils.h>
 
 static const size_t TERM_WIDTH=80;
 static const size_t TERM_HEIGHT=25;
@@ -14,10 +14,10 @@ static size_t terminal_column;
 
 static uint8_t current_color;
 static uint16_t* term_buffer;
+static uint16_t* const vga_buffer = (uint16_t*) 0xB8000;
 
 void screen_initialize(void) {
 	
-	static uint16_t* const vga_buffer = (uint16_t*) 0xB8000;
 	terminal_row = 0;
 	terminal_column = 0;
 	current_color = vga_color_set(LIGHT_GREY, BLACK);
@@ -35,7 +35,7 @@ void term_setcolor(enum vga_colors color) {
 	current_color = color;
 }
 
-void term_putentryat (unsigned char c, uint8_t color, size_t x, size_t y) {
+void term_putentryat (char c, uint8_t color, size_t x, size_t y) {
 	const size_t offset = y * TERM_WIDTH + x;
 	term_buffer[offset] = vga_entry(c, color);
 }
@@ -45,11 +45,13 @@ void term_putchar(char c) {
 	term_putentryat(uc, current_color, terminal_column, terminal_row);
 	
 	if(++terminal_column == TERM_WIDTH) 
+	{
 		terminal_column = 0;
 		if(++terminal_row == TERM_HEIGHT){
 			term_scroll();
 			terminal_row = 0;
 		}
+	}
 }
 
 void term_write(const char* data, size_t size) {
@@ -57,6 +59,30 @@ void term_write(const char* data, size_t size) {
 		term_putchar(data[i]);
 }
 
-void puts(const char* string) {
+void puts(const char* string) { 
-	term_write(string + "\n", strlen(string));
+	term_write(string, strlen(string));
+	term_putchar('\n');
+}
+
+void term_scroll() {
+	int current_pos = 160; //Start of the second line.
+	
+	unsigned char* term_buffer = (unsigned char*) vga_buffer;
+	
+	while (current_pos <= 4000) {
+		term_buffer[current_pos - 160 /*The character immediately below it*/] = vga_buffer[current_pos];      //Move each character up a line
+		term_buffer[current_pos - 159 /*The color of the character below*/] = vga_buffer[current_pos + 1];    //As well as its color
+		current_pos += 2; //Move to next char
+	}
+	
+	current_pos = 3840; //Start of the last line
+	int i; //Offset for framebuffer
+	//Wipe out the bottom line
+	for(i = 1920; i <= 2000; i++) {
+		term_buffer[current_pos] = 0;
+		current_pos += 2;
+	}
+	
+	i = 3840;
+	terminal_row = 24; //Prepare the screen to scroll
 }

include/kernel/tty.h

@@ -1,14 +1,15 @@
-#ifndef _KERNEL_TTY_H
+#pragma once
-#define _KERNEL_TTY_H
 
 #include <stddef.h>
+#include <stdint.h>
+#include <vga.h>
 
 void term_setcolor(enum vga_colors);
 void screen_initialize(void);
 void term_putentryat(char, uint8_t, size_t, size_t);
 void term_putchar(char);
-void term_write(char, size_t);
+void term_write(const char*, size_t);
-void puts(char);
+void puts(const char*);
 void set_cursor(int, int);
 void term_scroll(void);
 void int_to_ascii(int, char*);

include/kernel/utils.h

@@ -0,0 +1,5 @@
+#include <stddef.h>
+
+/* A temporary file, to get the system compiling. */
+
+size_t strlen(const char*);

include/vga.h

@@ -1,5 +1,4 @@
-#ifndef ARCH_I386_VGA_H
+#pragma once
-#define ARCH_I386_VGA_H
 
 #include <stdint.h>
 
@@ -23,12 +22,10 @@ enum vga_colors {
 	WHITE = 15
 };
 
-static inline uint8_t vga_color_set(enum vga_color fg, enum vga_color bg) {
+static inline uint8_t vga_color_set(enum vga_colors fg, enum vga_colors bg) {
 	return fg | bg << 4;
 }
 
 static inline uint16_t vga_entry(unsigned char uc, uint8_t color) {
 	return (uint16_t) uc | (uint16_t) color << 8;
 }
-
-#endif

kernel/kernel.c

@@ -1,5 +1,6 @@
-#include <stdio.h>
+//#include <stdio.h>
-#include <kernel/tty.h>
+
+#include "kernel/tty.h"
 
 int kernel_main(void) {
 	//Prepare the screen, and blank it out.
@@ -7,11 +8,11 @@ int kernel_main(void) {
 	
 	//Print a copyright message.
 	puts("(c)");
-	set_screen_text_color(GREEN);
+	term_setcolor(GREEN);
 	puts(" Project");
-	set_screen_text_color(RED);
+	term_setcolor(RED);
 	puts("RED");
-	set_screen_text_color(WHITE);
+	term_setcolor(WHITE);
 	puts(", 2019\n");
 	
 	for(;;) {}

kernel/utils.c

@@ -0,0 +1,8 @@
+#include <stddef.h>
+
+size_t strlen(const char* string) {
+	size_t size = 0;
+	while (string[size]) 
+		size++;
+	return size;
+}

makefile

@@ -1,6 +1,6 @@
-DEFAULT_HOST!=../default-host.sh
+DEFAULT_HOST:=i686-elf
 HOST?=DEFAULT_HOST
-HOSTARCH!=../target_to_arch.sh $(HOST)
+HOSTARCH:=i386
 
 CFLAGS?= -O2 -g
 CPPFLAGS?=
@@ -16,7 +16,7 @@ INCLUDEDIR?=$(PREFIX)/include
 CFLAGS:=$(CFLAGS) -ffreestanding -Wall -Wextra
 CPPFLAGS:=$(CPPFLAGS) -D__is_kernel -Iinclude
 LDFLAGS:=$(LDFLAGS)
-LIBS:=$(LIBS) -nostdlib -lk -lgcc
+LIBS:=$(LIBS) -nostdlib -lgcc
 
 ARCHDIR=arch/$(HOSTARCH)
 
@@ -27,9 +27,10 @@ CPPFLAGS:=$(CPPFLAGS) $(KERNEL_ARCH_CPPFLAGS)
 LDFLAGS:=$(LDFLAGS) $(KERNEL_ARCH_LDFLAGS)
 LIBS:=$(LIBS) $(KERNEL_ARCH_LIBS)
 
-KERNEL_OBJS=\
+KERNEL_OBJS=           \
-$(KERNEL_ARCH_OBJS)\
+$(KERNEL_ARCH_OBJS)    \
-kernel/kernel.o
+kernel/utils.o         \
+kernel/kernel.o        
 
 OBJS=\
 $(ARCHDIR)/crti.o     \
@@ -59,13 +60,13 @@ $(ARCHDIR)/crtbegin.o $(ARCHDIR)/crtend.o:
 	OBJ=`$(CC) $(CFLAGS)  $(LDFLAGS) -print-file-name=$(@F)` && cp "$$OBJ" $@
 		
 .c.o:
-	$(CC) -MD -c $< -o $@ -std=gnull $(CFLAGS) $(CPPFLAGS)
+	$(CC) -MD -c $< -o $@ -std=gnu11 $(CFLAGS) $(CPPFLAGS)
 .s.o:
 	$(CC) -MD -c $< -o $@ $(CFLAGS) $(CPPFLAGS)
 		
 clean:
 	rm -f red.kernel
-	rm -f $(OBJS) *.0 */*.o */*/*.o
+	rm -f $(OBJS) *.o */*.o */*/*.o
 	rm -f $(OBJS:.o=.d) *.d */*.d */*/*.d
 
 install: install-headers install-kernel gen-iso
@@ -92,3 +93,4 @@ gen-iso:
 		iso
 	
 -include $(OBJS:.o=.d)
+