Major refactoring, added Makefile

.vscode/c_cpp_properties.json

@@ -0,0 +1,17 @@
+{
+    "configurations": [
+        {
+            "name": "Linux",
+            "includePath": [
+                "${workspaceFolder}/**",
+                "${workspaceFolder}/include/"
+            ],
+            "defines": [],
+            "compilerPath": "/usr/bin/gcc",
+            "cStandard": "gnu17",
+            "cppStandard": "gnu++17",
+            "intelliSenseMode": "linux-gcc-x64"
+        }
+    ],
+    "version": 4
+}

build-cross-compiler.sh

@@ -1,19 +0,0 @@
-#!/bin/bash
-mkdir /tmp/src
-cd /tmp/src
-curl -O http://ftp.gnu.org/gnu/binutils/binutils-2.39.tar.gz
-tar xf binutils-2.39.tar.gz
-mkdir binutils-build
-cd binutils-build
-../binutils-2.39/configure --target=$TARGET --enable-interwork --enable-multilib --disable-nls --disable-werror --prefix=$PREFIX 2>&1 | tee configure.log
-sudo make all install 2>&1 | tee make.log
-cd /tmp/src
-curl -O https://ftp.gnu.org/gnu/gcc/gcc-12.2.0/gcc-12.2.0.tar.gz
-tar xf gcc-12.2.0.tar.gz
-mkdir gcc-build
-cd gcc-build
-../gcc-12.2.0/configure --target=$TARGET --prefix="$PREFIX" --disable-nls --disable-libssp --enable-languages=c --without-headers
-sudo make all-gcc 
-sudo make all-target-libgcc 
-sudo make install-gcc 
-sudo make install-target-libgcc 

build.sh

@@ -1,12 +0,0 @@
-#!/bin/bash
-# Compile the kernel and its drivers
-i386-elf-gcc -ffreestanding -I src/ -c src/kernel/main.c -o obj/kernel.o
-i386-elf-gcc -ffreestanding -I src/ -c src/kernel/drivers/vga/screen.c -o obj/screen.o
-i386-elf-gcc -ffreestanding -I src/ -c src/kernel/drivers/ports/ports.c -o obj/ports.o
-# Compile the assembly entry point and the MBR
-nasm -f elf src/entrypoint.s -o obj/entry.o
-nasm -f bin src/boot/mbr.s -o build/mbr.bin
-# Link everything together
-i386-elf-ld -o build/kernel.bin -Ttext 0x1000 entry.o kernel.o ports.o screen.o --oformat binary
-# Produce a bootable image
-cat build/mbr.bin build/kernel.bin > build/os.img

env.sh

@@ -1,6 +0,0 @@
-#!/bin/bash
-export CC=/usr/bin/gcc
-export LD=/usr/bin/gcc
-export PREFIX="/usr/local/i386elfgcc"
-export TARGET=i386-elf
-export PATH=$PATH:$PREFIX/bin

include/kernel/drivers/vga/screen.h

@@ -4,6 +4,7 @@
 #include "kernel/ktypes.h"
 #include "kernel/drivers/ports/ports.h"
 
+
 #define VMEM_ADDRESS 0xb8000
 #define VMEM_BUF ((byte*)VMEM_ADDRESS)
 #define MAX_ROWS 25
@@ -21,8 +22,8 @@
 
 // Public API
 void clearScreen(void);
-void kprintAt(byte* message, i32 col, i32 row);
-void kprint(byte* message);
+void kprintAt(char* message, i32 col, i32 row);
+void kprint(char* message);
 
 
 #endif

run.sh

@@ -1,2 +0,0 @@
-#!/bin/bash
-qemu-system-x86_64 -drive format=raw,file=build/os.bin,index=0,media=disk

src/kernel/drivers/ports/ports.c

@@ -1,6 +1,6 @@
 // Utilities for writing to and reading from I/O ports
 
-#include "ports.h"
+#include "kernel/drivers/ports/ports.h"
 
 
 // Note: We use the volatile modifier everywhere because

src/kernel/drivers/vga/screen.c

@@ -1,5 +1,5 @@
 // Implementation of a simple text-only VGA driver
-#include "screen.h"
+#include "kernel/drivers/vga/screen.h"
 #include "kernel/ktypes.h"
 
 
@@ -13,7 +13,7 @@ i32 getColumn(i32 offset);
 
 // Public API below
 
-void kprintAt(byte* message, i32 col, i32 row) {
+void kprintAt(char* message, i32 col, i32 row) {
     /*
     Prints a null-terminated string to the VGA
     text buffer at the specified row and column.
@@ -42,7 +42,7 @@ void kprintAt(byte* message, i32 col, i32 row) {
 }
 
 
-void kprint(byte* message) {
+void kprint(char* message) {
     /*
     Prints a null-terminated string to the
     VGA text buffer