From: Roland McGrath <roland@gnu.org>
Date: Wed, 26 Jul 1995 07:10:58 +0000 (+0000)
Subject: Wed Jul 26 02:00:29 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
X-Git-Tag: upstream/2.30~29950
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=958f803fc021993cc2ee1d4157d0092b830368aa;p=external%2Fglibc.git

Wed Jul 26 02:00:29 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>

	* malloc/memalign.c: Allocate (SIZE + ALIGNMENT - 1) and then trim
 	if possible.

	* mach/shortcut.awk: Emit decls for RPC.

	* libc-symbols.h [GCC >= 2.7 && !ASSEMBLER] (weak_symbol,
 	weak_alias, strong_alias): Define using GCC __attribute__ syntax.

	* Makerules ($(installed-libcs)): Depend on `lib' (only).
---

diff --git a/ChangeLog b/ChangeLog
index 598f70f..5227ff0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,15 @@
+Wed Jul 26 02:00:29 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
+
+	* malloc/memalign.c: Allocate (SIZE + ALIGNMENT - 1) and then trim
+ 	if possible.
+
+	* mach/shortcut.awk: Emit decls for RPC.
+
+	* libc-symbols.h [GCC >= 2.7 && !ASSEMBLER] (weak_symbol,
+ 	weak_alias, strong_alias): Define using GCC __attribute__ syntax.
+
+	* Makerules ($(installed-libcs)): Depend on `lib' (only).
+
 Tue Jul 25 09:14:53 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
 
 	* sysdeps/mach/hurd/pathconf.c: Declare VALUE as int, not long int.
diff --git a/libc-symbols.h b/libc-symbols.h
index f4d82a6..951ea61 100644
--- a/libc-symbols.h
+++ b/libc-symbols.h
@@ -134,6 +134,26 @@ Cambridge, MA 02139, USA.  */
 #endif
 
 
+#if (!defined (ASSEMBLER) && \
+     (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)))
+/* GCC 2.7 and later has special syntax for weak symbols and aliases.
+   Using that is better when possible, because the compiler and assembler
+   are better clued in to what we are doing.  */
+#undef	strong_alias
+#define strong_alias(name, aliasname) \
+  __typeof (name) aliasname __attribute__ ((alias (#name)));
+
+#ifdef HAVE_WEAK_SYMBOLS
+#undef	weak_symbol
+#define weak_symbol(name) \
+  __typeof (name) name __attribute__ ((weak));
+#undef	weak_alias
+#define weak_alias(name, aliasname) \
+  __typeof (name) aliasname __attribute__ ((weak, alias (#name)));
+#endif	/* HAVE_WEAK_SYMBOLS.  */
+#endif	/* Not ASSEMBLER, and GCC 2.7 or later.  */
+
+
 
 /* When the file using this macro is linked in, the linker
    will emit a warning message MSG.  */
diff --git a/mach/shortcut.awk b/mach/shortcut.awk
index d6090d7..987cebe 100644
--- a/mach/shortcut.awk
+++ b/mach/shortcut.awk
@@ -35,11 +35,14 @@ echo == 1 { print $0; }
     print "{";
     print "  kern_return_t err;";
     print "  extern kern_return_t " syscall " (" proto ");";
+    print "  extern kern_return_t " rpc " (" proto ");";
     print "  err = " syscall " (" arglist ");";
     print "  if (err == MACH_SEND_INTERRUPTED)";
     print "    err = " rpc " (" arglist ");";
     print "  return err;"
     print "}";
-    print "weak_alias (" call ", " alias ")"
+    print "weak_alias (" call ", " alias ")";
+    # Declare RPC so the weak_alias that follows will work.
+    print "extern __typeof (" call ") " rpc ";";
     echo = 1;
   }