1 files changed, 44 insertions, 0 deletions
diff --git a/include/sbi/sbi_bits.h b/include/sbi/sbi_bits.h
new file mode 100644
index 0000000..118fab2
--- /dev/null
+++ b/include/sbi/sbi_bits.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2018 Western Digital Corporation or its affiliates.
+ *
+ * Authors:
+ *   Anup Patel <anup.patel@wdc.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#ifndef __SBI_BITS_H__
+#define __SBI_BITS_H__
+
+#define likely(x) __builtin_expect((x), 1)
+#define unlikely(x) __builtin_expect((x), 0)
+
+#define ROUNDUP(a, b) ((((a)-1)/(b)+1)*(b))
+#define ROUNDDOWN(a, b) ((a)/(b)*(b))
+
+#define MAX(a, b) ((a) > (b) ? (a) : (b))
+#define MIN(a, b) ((a) < (b) ? (a) : (b))
+#define CLAMP(a, lo, hi) MIN(MAX(a, lo), hi)
+
+#define EXTRACT_FIELD(val, which) (((val) & (which)) / ((which) & ~((which)-1)))
+#define INSERT_FIELD(val, which, fieldval) (((val) & ~(which)) | ((fieldval) * ((which) & ~((which)-1))))
+
+#define STR(x) XSTR(x)
+#define XSTR(x) #x
+
+#if __riscv_xlen == 64
+#define SLL32    sllw
+#define STORE    sd
+#define LOAD     ld
+#define LWU      lwu
+#define LOG_REGBYTES 3
+#else
+#define SLL32    sll
+#define STORE    sw
+#define LOAD     lw
+#define LWU      lw
+#define LOG_REGBYTES 2
+#endif
+#define REGBYTES (1 << LOG_REGBYTES)
+
+#endif