From a31794504d911d584265ac0427dfbba9a4d9ef72 Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Sun, 18 Jul 2021 20:01:20 +0200
Subject: basic executable loading

---
 src/init/linker.ld | 24 ++++++++++++++++++++++++
 src/init/main.c    | 10 ++++++++++
 2 files changed, 34 insertions(+)
 create mode 100644 src/init/linker.ld
 create mode 100644 src/init/main.c

(limited to 'src/init')

diff --git a/src/init/linker.ld b/src/init/linker.ld
new file mode 100644
index 0000000..9f3f4b5
--- /dev/null
+++ b/src/init/linker.ld
@@ -0,0 +1,24 @@
+ENTRY(main)
+OUTPUT_FORMAT("binary")
+
+SECTIONS
+{
+	. = 2M;
+	.text BLOCK(4K) : ALIGN(4K)
+	{
+		*(.text)
+	}
+	.rodata BLOCK(4K) : ALIGN(4K)
+	{
+		*(.rodata)
+	}
+	.data BLOCK(4K) : ALIGN(4K)
+	{
+		*(.data)
+	}
+	.bss BLOCK(4K) : ALIGN(4K)
+	{
+		*(COMMON)
+		*(.bss)
+	}
+}
diff --git a/src/init/main.c b/src/init/main.c
new file mode 100644
index 0000000..e6188ac
--- /dev/null
+++ b/src/init/main.c
@@ -0,0 +1,10 @@
+#include <stdint.h>
+
+int main() {
+	// change the colors of VGA text
+	// doesn't require a lot of code, but still shows that it's working
+	uint8_t *vga = (void*) 0xB8000;
+	for (int i = 0; i < 80 * 25; i++)
+		vga[(i << 1) + 1] = 0x4e;
+	for (;;);
+}
-- 
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