Use gcc's superior ffs() builtin.

2003-12-10 22:51:40 +00:00 · 2003-12-10 22:51:40 +00:00 · 419d43c635
commit 419d43c635
parent a80f5f272c
2 changed files with 9 additions and 1 deletions
--- a/sys/conf/files.ia64
+++ b/sys/conf/files.ia64
@ -135,7 +135,6 @@ isa/syscons_isa.c		optional	sc
 isa/vga_isa.c			optional	vga
 kern/imgact_elf32.c		optional	ia32
 libkern/bcmp.c			standard
-libkern/ffs.c			standard
 libkern/ia64/__divdi3.S		standard
 libkern/ia64/__divsi3.S		standard
 libkern/ia64/__moddi3.S		standard
--- a/sys/ia64/include/cpufunc.h
+++ b/sys/ia64/include/cpufunc.h
@ -45,6 +45,15 @@ breakpoint(void)
 	__asm __volatile("break 0x80100"); /* XXX use linux value */
 }

+
+#define HAVE_INLINE_FFS
+
+static __inline int
+ffs(int mask)
+{
+	return (__builtin_ffs(mask));
+}
+
 #endif

 extern uint64_t ia64_port_base;