sdcc-3.9.0 fork implementing GNU assembler syntax

This fork aims to provide better support for stm8-binutils

1 files changed, 26 insertions, 0 deletions

diff --git a/support/sdbinutils/libiberty/ffs.c b/support/sdbinutils/libiberty/ffs.c
new file mode 100644
index 0000000..603cbe8
--- /dev/null
+++ b/support/sdbinutils/libiberty/ffs.c
@@ -0,0 +1,26 @@
+/* ffs -- Find the first bit set in the parameter
+
+@deftypefn Supplemental int ffs (int @var{valu})
+
+Find the first (least significant) bit set in @var{valu}.  Bits are
+numbered from right to left, starting with bit 1 (corresponding to the
+value 1).  If @var{valu} is zero, zero is returned.
+
+@end deftypefn
+
+*/
+
+int
+ffs (register int valu)
+{
+  register int bit;
+
+  if (valu == 0)
+    return 0;
+
+  for (bit = 1; !(valu & 1); bit++)
+  	valu >>= 1;
+
+  return bit;
+}
+