1 files changed, 49 insertions, 0 deletions
diff --git a/agbx/include-private/agbx/priv.h b/agbx/include-private/agbx/priv.h
new file mode 100644
index 0000000..39c73f6
--- /dev/null
+++ b/agbx/include-private/agbx/priv.h
@@ -0,0 +1,49 @@
+/*
+	Copyright 2022 Gabriel Jensen.
+	This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
+	If a copy of the MPL was not distributed with this file, You can obtain one at https://mozilla.org/MPL/2.0/.
+*/
+
+#if !defined(__agbx_hdr_priv)
+#define __agbx_hdr_priv
+
+#include <agbx/gfx.h>
+
+#define __agbx_set10(_addr,_val) { \
+	__asm__ ( \
+		"strh %1,[%0]" \
+		: \
+		: "r" (_addr),"r" (_val) \
+		: "memory" \
+	); \
+}
+
+#define __agbx_set20(_addr,_val) { \
+	__asm__ ( \
+		"str %1,[%0]" \
+		: \
+		: "r" (_addr),"r" (_val) \
+		: "memory" \
+	); \
+}
+
+#define __agbx_set8(_addr,_val) { \
+	__asm__ ( \
+		"strb %1,[%0]" \
+		: \
+		: "r" (_addr),"r" (_val) \
+		: "memory" \
+	); \
+}
+
+#define __agbx_setpx1(_px,_col) { \
+	agbx_i20 const addr = 0x6000000u + _px; \
+	__agbx_set8(addr,_col); \
+}
+
+#define __agbx_setpx2(_px,_col) { \
+	agbx_i20 const addr = 0x6000000u + _px * 0x2u; /* We multiply it by two as each pixel takes up two bytes. */ \
+	__agbx_set10(addr,_col); \
+}
+
+#endif