compiled newlib, need to hook up the system calls

programs/crt0.S

@@ -0,0 +1,24 @@
+.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/crt0.s

@@ -0,0 +1,28 @@
+# 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/linker.ld

@@ -0,0 +1,31 @@
+ENTRY(_start)
+
+SECTIONS
+{
+    . = 0x40000000;
+
+    .text ALIGN(4K) :
+    {
+        /* Force the crt0.o entry code to be placed FIRST in memory */
+        KEEP(*crt0.o(.text))
+        *(.text .text.*)
+    }
+
+    .rodata ALIGN(4K) :
+    {
+        *(.rodata .rodata.*)
+    }
+
+    .data ALIGN(4K) :
+    {
+        *(.data .data.*)
+    }
+
+    .bss ALIGN(4K) :
+    {
+        _bss_start = .;
+        *(.bss .bss.*)
+        *(COMMON)
+        _bss_end = .;
+    }
+}

programs/main.c

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

programs/makefile

@@ -1,16 +1,23 @@
 CC = i686-elf-gcc
 LD = i686-elf-ld
 
-CFLAGS  := -ffreestanding -O2 -Wall -Wextra
+CFLAGS = -ffreestanding -O2 -Wall -Wextra -I../rocklibc/include
+LDFLAGS = -m elf_i386 -nostdlib
 
-all: origin.elf
+TARGET = origin.elf
 
-origin.o: origin.S
-	$(CC) -c origin.S -o origin.o $(CFLAGS)
+all: $(TARGET)
 
-origin.elf: origin.o
-	$(LD) -Ttext 0x40000000 origin.o -o origin.elf
-	mv origin.elf ../isodir/boot
+crt0.o: crt0.s
+	$(CC) $(CFLAGS) -c crt0.s -o crt0.o
+
+main.o: main.c
+	$(CC) $(CFLAGS) -c main.c -o main.o
+
+$(TARGET): crt0.o main.o ../rocklibc/rlibc.a
+	$(LD) $(LDFLAGS) -T linker.ld crt0.o main.o ../rocklibc/rlibc.a $(shell $(CC) -print-libgcc-file-name) -o $(TARGET)
 
 clean:
-	rm -f origin.o origin.elf
+	rm -f *.o $(TARGET)
+
+.PHONY: all clean

programs/origin.S

@@ -1,16 +0,0 @@
-.code32 
-
-.section .text 
-.global _start
-_start: 
-    mov $1, %eax
-    mov $(message), %ebx
-    mov $0, %ecx
-    mov $0, %edx
-    int $0x80
-loop: 
-    jmp loop
-
-.section .data
-message:
-    .asciz "Hello, Userland!\n";