X-Git-Url: https://scm.lunaixsky.com/lunaix-os.git/blobdiff_plain/6be108db01439d3463342689446e457a315d6705..6b995c8cb722d10aaacba52999f5c43e43daeb85:/lunaix-os/arch/generic/includes/asm-generic/bits.h

diff --git a/lunaix-os/arch/generic/includes/asm-generic/bits.h b/lunaix-os/arch/generic/includes/asm-generic/bits.h
new file mode 100644
index 0000000..430e395
--- /dev/null
+++ b/lunaix-os/arch/generic/includes/asm-generic/bits.h
@@ -0,0 +1,13 @@
+#ifndef __LUNAIX_ARCH_GENERIC_BITS_H
+#define __LUNAIX_ARCH_GENERIC_BITS_H
+
+#define _BITS_GENMASK(h, l)     \
+        (((1UL << ((h) + 1)) - 1) ^ ((1UL << (l)) - 1))
+
+#define _BITS_EXTRACT(from, h, l)     \
+        (((from) & (((1UL << (h + 1)) - 1) ^ ((1UL << l) - 1))) >> l)
+
+#define _BITS_INSERT(to, from, h, l)    \
+        (((to) & ~_BITS_GENMASK(h, l)) | (((from) << l) & _BITS_GENMASK(h, l)))
+
+#endif /* __LUNAIX_ARCH_BITS_H */