From 1e7f6dd22e006abca9f224ed3cbf2fc840b13011 Mon Sep 17 00:00:00 2001
From: Nocturn9x <hackhab@gmail.com>
Date: Wed, 16 Nov 2022 15:37:01 +0100
Subject: [PATCH] Added missing scripts and C kernel

---
 build.sh          |  5 +++++
 env.sh            |  6 ++++++
 run.sh            |  2 ++
 src/kernel/main.c | 16 ++++++++++++++++
 4 files changed, 29 insertions(+)
 create mode 100755 build.sh
 create mode 100755 env.sh
 create mode 100755 run.sh
 create mode 100644 src/kernel/main.c

diff --git a/build.sh b/build.sh
new file mode 100755
index 0000000..127e7fe
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+i386-elf-gcc -ffreestanding -c src/kernel/main.c -o main.o
+nasm -f elf src/entrypoint.s -o entrypoint.o
+i386-elf-ld -o kernel.bin -Ttext 0x1000 entrypoint.o main.o --oformat binary
+cat mbr.bin kernel.bin > os.bin
diff --git a/env.sh b/env.sh
new file mode 100755
index 0000000..54a708f
--- /dev/null
+++ b/env.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+export CC=/usr/bin/gcc
+export LD=/usr/bin/gcc
+export PREFIX="/usr/local/i386elfgcc"
+export TARGET=i386-elf
+export PATH="$PREFIX/bin:$PATH"
diff --git a/run.sh b/run.sh
new file mode 100755
index 0000000..eb7ca5f
--- /dev/null
+++ b/run.sh
@@ -0,0 +1,2 @@
+#!/bin/bash
+qemu-system-x86_64 -drive format=raw,file=os.bin,index=0,media=disk
diff --git a/src/kernel/main.c b/src/kernel/main.c
new file mode 100644
index 0000000..76e3163
--- /dev/null
+++ b/src/kernel/main.c
@@ -0,0 +1,16 @@
+// C entry point of our kernel
+#define VMEM_ADDR 0xb8000
+
+void dummy_test_entrypoint(void) {
+}
+
+
+void kmain(void) {
+    char* vbuf = (char*)VMEM_ADDR;
+    vbuf += 480;    // We skip the log messages before us
+    char *s = "Hello from the TSOS kernel!";
+    for (int i = 0; s[i] != '\0'; i++) {
+        *vbuf = s[i];
+        vbuf += 2;
+    }
+}
\ No newline at end of file