more userspace stuff

programs/crt0.S

@@ -1,24 +1,21 @@
 .global _start
-.intel_syntax noprefix
 
 .section .text
 _start:
-    xor ebp, ebp
-    push ebp
-    mov ebp, esp
+    xor %ebp, %ebp
+    push %ebp
+    mov %esp, %ebp
 
-    mov eax, [esp + 4]
-    lea ebx, [esp + 8]
-    lea ecx, [esp + 12]
+    mov (%esp), %eax
+    lea 4(%esp), %ebx
+    lea 8(%esp, %eax, 4), %ecx
 
-    push ecx
-    push ebx
-    push eax
+    push %ecx
+    push %ebx
+    push %eax
 
     call main
 
-    push eax
+    push %eax
     call exit
-
-1:  hlt
-    jmp 1b
+1: jmp 1b   

programs/crt0.s

@@ -1,28 +0,0 @@
-# 0 "crt0.S"
-# 0 "<built-in>"
-# 0 "<command-line>"
-# 1 "crt0.S"
-.global _start
-.intel_syntax noprefix
-
-.section .text
-_start:
-    xor ebp, ebp
-    push ebp
-    mov ebp, esp
-
-    mov eax, [esp + 4]
-    lea ebx, [esp + 8]
-    lea ecx, [esp + 12]
-
-    push ecx
-    push ebx
-    push eax
-
-    call main
-
-    push eax
-    call exit
-
-1: hlt
-    jmp 1b

programs/main.c

@@ -1,8 +1,6 @@
 #include <stdio.h>
-#include <stdlib.h>
 
-int main(int argc, char** argv) {
-    printf("Hello, World from RockOS!\n");
-    
+int main() {
+    printf("RockOS booting...\n");
     return 0;
 }

programs/makefile

@@ -8,8 +8,8 @@ TARGET = origin.elf
 
 all: $(TARGET)
 
-crt0.o: crt0.s
-	$(CC) $(CFLAGS) -c crt0.s -o crt0.o
+crt0.o: crt0.S
+	$(CC) $(CFLAGS) -c crt0.S -o crt0.o
 
 main.o: main.c
 	$(CC) $(CFLAGS) -c main.c -o main.o