From d08f4dc2f52e61d9076682c79a1d1012d652da9d Mon Sep 17 00:00:00 2001
From: Conzer <vaporvault04@gmail.com>
Date: Mon, 2 Dec 2024 16:00:24 -0500
Subject: [PATCH] half written kernel. gsejbhdfsgjhbkdfgshjbkdfgsjkhfgdh

---
 .gitignore       |  1 +
 README.md        |  4 ++--
 kernel.c         | 24 ++++++++++++++++++++++++
 kernel_entry.asm | 22 ++++++++++++++++++++++
 4 files changed, 49 insertions(+), 2 deletions(-)
 create mode 100644 kernel.c
 create mode 100644 kernel_entry.asm

diff --git a/.gitignore b/.gitignore
index 8f2a01a..3d5b43a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 badloader.img
+baddos.img
diff --git a/README.md b/README.md
index 8e44099..5ffa168 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,6 @@
 THE WORST BOOTLOADER EVER DO NOT USE THIS PLEASE
 
 # Building
-install `nasm`, then run build.sh.
+install `nasm`, `make` and `gcc`, then run `make`
 # notes
-i havent tested this in qemu lol
\ No newline at end of file
+i have tested this in qemu
\ No newline at end of file
diff --git a/kernel.c b/kernel.c
new file mode 100644
index 0000000..7bf7f9c
--- /dev/null
+++ b/kernel.c
@@ -0,0 +1,24 @@
+// kernel for the bad dos.
+void print(const char* str) {
+    while (*str) {
+        __asm__ __volatile__(
+            "mov ah, 0x0E"
+            "mov al, %[char];"
+            "int 0x10;"
+            :
+            : [char] "r" (*str)
+        );
+    }
+}
+
+void main() {
+    print("Welcome to BadDOS!\r\n");
+    print("type something or die:\r\n");
+
+    while (1) {
+        print("/dev/flp/> ");
+        char c = get_char();
+        print_char(c);
+        if (c == '\r') print("\r\n");
+    }
+}
\ No newline at end of file
diff --git a/kernel_entry.asm b/kernel_entry.asm
new file mode 100644
index 0000000..cd7dce3
--- /dev/null
+++ b/kernel_entry.asm
@@ -0,0 +1,22 @@
+; wait, WHAT? we have a bad DOS now????? This is absurd! You can't just add a SECOND project into the FIRST project.
+
+[BITS 16]
+[ORG 0x7E00]
+
+start:
+    cli
+    xor ax, ax
+    mov ds, ax
+    mov es, ax
+    mov ss, ax
+    mov sp, 0x7C00
+    sti
+
+    call kernel_main
+
+    cli
+hang:
+    hlt
+    jmp hang
+
+times 512-($-$$) db 0
\ No newline at end of file