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* common.din (ffsl): Export. 

(ffsll): Export.
	* syscalls.cc (ffs): Implement using GCC intrinsic.
	(ffsl): Ditto.
	(ffsll): Ditto.
	* include/cygwin/version.h (CYGWIN_VERSION_API_MINOR): Bump.
This commit is contained in:
Corinna Vinschen 2014-10-08 21:03:40 +00:00
parent 2fb56bbfaa
commit d326f841c3
3 changed files with 15 additions and 15 deletions
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2
winsup/cygwin/common.din
View File

@ -374,6 +374,8 @@ feupdateenv SIGFE
fexecve SIGFE fexecve SIGFE
fflush SIGFE fflush SIGFE
ffs NOSIGFE ffs NOSIGFE
ffsl NOSIGFE
ffsll NOSIGFE
fgetc SIGFE fgetc SIGFE
fgetpos SIGFE fgetpos SIGFE
fgets SIGFE fgets SIGFE

3
winsup/cygwin/include/cygwin/version.h
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@ -451,12 +451,13 @@ details. */
275: Introduce account mapping from Windows account DBs. Add CW_SETENT, 275: Introduce account mapping from Windows account DBs. Add CW_SETENT,
CW_GETENT, CW_ENDENT, CW_GETNSSSEP, CW_GETPWSID, CW_GETGRSID, CW_GETENT, CW_ENDENT, CW_GETNSSSEP, CW_GETPWSID, CW_GETGRSID,
CW_CYGNAME_FROM_WINNAME. CW_CYGNAME_FROM_WINNAME.
276: Export ffsl, ffsll.
*/ */
/* Note that we forgot to bump the api for ualarm, strtoll, strtoull */ /* Note that we forgot to bump the api for ualarm, strtoll, strtoull */
#define CYGWIN_VERSION_API_MAJOR 0 #define CYGWIN_VERSION_API_MAJOR 0
#define CYGWIN_VERSION_API_MINOR 275 #define CYGWIN_VERSION_API_MINOR 276
/* There is also a compatibity version number associated with the /* There is also a compatibity version number associated with the
shared memory regions. It is incremented when incompatible shared memory regions. It is incremented when incompatible

25
winsup/cygwin/syscalls.cc
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@ -3836,22 +3836,19 @@ nice (int incr)
extern "C" int extern "C" int
ffs (int i) ffs (int i)
{ {
static const unsigned char table[] = return __builtin_ffs (i);
{ }
0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8
};
unsigned x = i & -i;
int a = x <= 0xffff ? (x <= 0xff ? 0 : 8) : (x <= 0xffffff ? 16 : 24); extern "C" int
ffsl (long i)
{
return __builtin_ffsl (i);
}
return table[x >> a] + a; extern "C" int
ffsll (long long i)
{
return __builtin_ffsll (i);
} }
static void static void