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merge from gcc

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This commit is contained in:
DJ Delorie 2001-07-05 17:29:17 +00:00
parent af703f9620
commit 7b78baae9b
5 changed files with 40 additions and 3 deletions
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6
libiberty/ChangeLog
View file

@ -1,3 +1,9 @@
2001-07-05 Mark Klein <mklein@dis.com>
* Makefile.in: Add ffs.c dependency.
* configure.in: Add ffs.c.
* ffs.c: New file.
2001-06-18 Richard Henderson <rth@redhat.com>
* concat.c: Include <sys/types.h>.

2
libiberty/Makefile.in
View file

@ -122,7 +122,7 @@ dvi: dvi-subdir
# configure.in.
CFILES = asprintf.c alloca.c argv.c atexit.c basename.c bcmp.c bcopy.c \
bzero.c calloc.c choose-temp.c clock.c concat.c cplus-dem.c \
cp-demangle.c dyn-string.c fdmatch.c fnmatch.c getcwd.c \
cp-demangle.c dyn-string.c fdmatch.c fnmatch.c ffs.c getcwd.c \
getpwd.c getopt.c getopt1.c getpagesize.c getruntime.c \
floatformat.c hashtab.c hex.c index.c insque.c lbasename.c \
md5.c make-temp-file.c memchr.c \

3
libiberty/configure vendored
View file

@ -1329,6 +1329,7 @@ funcs="$funcs bsearch"
funcs="$funcs bzero"
funcs="$funcs calloc"
funcs="$funcs clock"
funcs="$funcs ffs"
funcs="$funcs getcwd"
funcs="$funcs getpagesize"
funcs="$funcs index"
@ -1700,7 +1701,7 @@ else
fi
done
for ac_func in sysconf times sbrk gettimeofday
for ac_func in sysconf times sbrk gettimeofday ffs
do
echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
echo "configure:1707: checking for $ac_func" >&5

3
libiberty/configure.in
View file

@ -87,6 +87,7 @@ funcs="$funcs bsearch"
funcs="$funcs bzero"
funcs="$funcs calloc"
funcs="$funcs clock"
funcs="$funcs ffs"
funcs="$funcs getcwd"
funcs="$funcs getpagesize"
funcs="$funcs index"
@ -134,7 +135,7 @@ if test "x" = "y"; then
AC_CHECK_FUNCS(strcasecmp setenv strchr strdup strncasecmp strrchr strstr)
AC_CHECK_FUNCS(strtod strtol strtoul tmpnam vasprintf vfprintf vprintf)
AC_CHECK_FUNCS(vsprintf waitpid getrusage on_exit psignal strerror strsignal)
AC_CHECK_FUNCS(sysconf times sbrk gettimeofday)
AC_CHECK_FUNCS(sysconf times sbrk gettimeofday ffs)
AC_DEFINE(HAVE_SYS_ERRLIST, 1, [Define if you have the sys_errlist variable.])
AC_DEFINE(HAVE_SYS_NERR, 1, [Define if you have the sys_nerr variable.])
AC_DEFINE(HAVE_SYS_SIGLIST, 1, [Define if you have the sys_siglist variable.])

29
libiberty/ffs.c Normal file
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@ -0,0 +1,29 @@
/* ffs -- Find the first bit set in the parameter
NAME
ffs -- Find the first bit set in the parameter
SYNOPSIS
int ffs (int valu)
DESCRIPTION
Find the first bit set in the parameter. Bits are numbered from
right to left, starting with bit 1.
*/
int
ffs (valu)
register int valu;
{
register int bit;
if (valu == 0)
return 0;
for (bit = 1; !(valu & 1); bit++)
valu >>= 1;
return bit;
}