From c9e41cd3485fa1a65dc6206c5b210b4be4c5597c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81kos=20Uzonyi?= <uzonyi.akos@gmail.com>
Date: Sat, 13 Jun 2020 18:18:32 +0200
Subject: [PATCH 120/138] Move ilog* functions from util.c to defs.h
* util.c (ILOG2_ITER_, ilog2_klong, ilog2_64, ilog2_32): Move ...
* defs.h: ... here.
---
defs.h | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
util.c | 62 --------------------------------------------------------------
2 files changed, 60 insertions(+), 62 deletions(-)
diff --git a/defs.h b/defs.h
index 3aa07fb..d8bd513 100644
--- a/defs.h
+++ b/defs.h
@@ -1698,4 +1698,64 @@ scno_is_valid(kernel_ulong_t scno)
# define SYS_FUNC(syscall_name) int SYS_FUNC_NAME(sys_ ## syscall_name)(struct tcb *tcp)
+#define ILOG2_ITER_(val_, ret_, bit_) \
+ do { \
+ typeof(ret_) shift_ = \
+ ((val_) > ((((typeof(val_)) 1) \
+ << (1 << (bit_))) - 1)) << (bit_); \
+ (val_) >>= shift_; \
+ (ret_) |= shift_; \
+ } while (0)
+
+/**
+ * Calculate floor(log2(val)), with the exception of val == 0, for which 0
+ * is returned as well.
+ *
+ * @param val 64-bit value to calculate integer base-2 logarithm for.
+ * @return (unsigned int) floor(log2(val)) if val > 0, 0 if val == 0.
+ */
+static inline unsigned int
+ilog2_64(uint64_t val)
+{
+ unsigned int ret = 0;
+
+ ILOG2_ITER_(val, ret, 5);
+ ILOG2_ITER_(val, ret, 4);
+ ILOG2_ITER_(val, ret, 3);
+ ILOG2_ITER_(val, ret, 2);
+ ILOG2_ITER_(val, ret, 1);
+ ILOG2_ITER_(val, ret, 0);
+
+ return ret;
+}
+
+/**
+ * Calculate floor(log2(val)), with the exception of val == 0, for which 0
+ * is returned as well.
+ *
+ * @param val 32-bit value to calculate integer base-2 logarithm for.
+ * @return (unsigned int) floor(log2(val)) if val > 0, 0 if val == 0.
+ */
+static inline unsigned int
+ilog2_32(uint32_t val)
+{
+ unsigned int ret = 0;
+
+ ILOG2_ITER_(val, ret, 4);
+ ILOG2_ITER_(val, ret, 3);
+ ILOG2_ITER_(val, ret, 2);
+ ILOG2_ITER_(val, ret, 1);
+ ILOG2_ITER_(val, ret, 0);
+
+ return ret;
+}
+
+#if SIZEOF_KERNEL_LONG_T > 4
+# define ilog2_klong ilog2_64
+#else
+# define ilog2_klong ilog2_32
+#endif
+
+#undef ILOG2_ITER_
+
#endif /* !STRACE_DEFS_H */
diff --git a/util.c b/util.c
index 59696b5..cde76c1 100644
--- a/util.c
+++ b/util.c
@@ -1120,68 +1120,6 @@ dumpiov_upto(struct tcb *const tcp, const int len, const kernel_ulong_t addr,
#undef iov
}
-#define ILOG2_ITER_(val_, ret_, bit_) \
- do { \
- typeof(ret_) shift_ = \
- ((val_) > ((((typeof(val_)) 1) \
- << (1 << (bit_))) - 1)) << (bit_); \
- (val_) >>= shift_; \
- (ret_) |= shift_; \
- } while (0)
-
-#if SIZEOF_KERNEL_LONG_T > 4
-
-# define ilog2_klong ilog2_64
-/**
- * Calculate floor(log2(val)), with the exception of val == 0, for which 0
- * is returned as well.
- *
- * @param val 64-bit value to calculate integer base-2 logarithm for.
- * @return (unsigned int) floor(log2(val)) if val > 0, 0 if val == 0.
- */
-static inline unsigned int
-ilog2_64(uint64_t val)
-{
- unsigned int ret = 0;
-
- ILOG2_ITER_(val, ret, 5);
- ILOG2_ITER_(val, ret, 4);
- ILOG2_ITER_(val, ret, 3);
- ILOG2_ITER_(val, ret, 2);
- ILOG2_ITER_(val, ret, 1);
- ILOG2_ITER_(val, ret, 0);
-
- return ret;
-}
-
-#else /* SIZEOF_KERNEL_LONG_T == 4 */
-
-# define ilog2_klong ilog2_32
-/**
- * Calculate floor(log2(val)), with the exception of val == 0, for which 0
- * is returned as well.
- *
- * @param val 32-bit value to calculate integer base-2 logarithm for.
- * @return (unsigned int) floor(log2(val)) if val > 0, 0 if val == 0.
- */
-static inline unsigned int
-ilog2_32(uint32_t val)
-{
- unsigned int ret = 0;
-
- ILOG2_ITER_(val, ret, 4);
- ILOG2_ITER_(val, ret, 3);
- ILOG2_ITER_(val, ret, 2);
- ILOG2_ITER_(val, ret, 1);
- ILOG2_ITER_(val, ret, 0);
-
- return ret;
-}
-
-#endif /* SIZEOF_KERNEL_LONG_T */
-
-#undef ILOG2_ITER_
-
void
dumpstr(struct tcb *const tcp, const kernel_ulong_t addr,
const kernel_ulong_t len)
--
2.1.4