PATCH: Use __attribute_used__

[H . J . Lu]

We should use __attribute_used__ for gcc 3.1, especially on mips.
Otherwise, gcc 3.1 won't emit the code. I can send in patches to
fix other archs.

H.J.
----
2002-02-04  H.J. Lu  <hjl@gnu.org>

	* sysdeps/mips/dl-machine.h (elf_machine_matches_host): Use
	__attribute_used__.
	(__dl_runtime_resolve): Likewise.

	* sysdeps/mips/machine-gmon.h (_MCOUNT_DECL): Make it a real
	declaration.

--- libc/sysdeps/mips/dl-machine.h.mips	Mon Feb  4 13:45:18 2002
+++ libc/sysdeps/mips/dl-machine.h	Mon Feb  4 15:08:39 2002
@@ -69,7 +72,7 @@ do { if ((l)->l_info[DT_MIPS (RLD_MAP)])
    } while (0)
 
 /* Return nonzero iff ELF header is compatible with the running host.  */
-static inline int __attribute__ ((unused))
+static inline int __attribute_used__
 elf_machine_matches_host (const ElfW(Ehdr) *ehdr)
 {
   switch (ehdr->e_machine)
@@ -262,7 +265,7 @@ int _dl_mips_gnu_objects = 1;						     
 /* This is called from assembly stubs below which the compiler can't see.  */ \
 static ElfW(Addr)							      \
 __dl_runtime_resolve (ElfW(Word), ElfW(Word), ElfW(Addr), ElfW(Addr))	      \
-		  __attribute__ ((unused));				      \
+		  __attribute_used__;					      \
 									      \
 static ElfW(Addr)							      \
 __dl_runtime_resolve (ElfW(Word) sym_index,				      \
--- libc/sysdeps/mips/machine-gmon.h.mips	Mon Feb  4 15:08:39 2002
+++ libc/sysdeps/mips/machine-gmon.h	Mon Feb  4 15:08:39 2002
@@ -17,7 +17,8 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
-#define _MCOUNT_DECL static void __mcount
+#define _MCOUNT_DECL(frompc,selfpc) \
+static void __attribute_used__ __mcount (u_long frompc, u_long selfpc)
 
 /* Call __mcount with our the return PC for our caller,
    and the return PC our caller will return to.  */