Start writing the kernel and add a linker script

Move the code unders [BITS 32] label to its own file to be loaded as a
kernel by the boot loader.

Add a linker script to link the bootloader and the kernel in a single
binary file.

Add a build script to make it easier to use the cross compiler

Update the Makefile to build everything and pack it into the os.bin

Signed-off-by: Carlos Maiolino <[email protected]>

1 files changed, 27 insertions, 0 deletions

diff --git a/src/linker.ld b/src/linker.ld
new file mode 100644
index 0000000..9ea0171
--- /dev/null
+++ b/src/linker.ld
@@ -0,0 +1,27 @@
+ENTRY(_start)
+OUTPUT_FORMAT(binary)
+
+SECTIONS {
+	. = 1M;
+
+	.text :
+	{
+		*(.text)
+	}
+
+	.rodata :
+	{
+		*(.rodata)
+	}
+
+	.data :
+	{
+		*(.data)
+	}
+
+	.bss :
+	{
+		*(COMMON)
+		*(.bss)
+	}
+}