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Re: PATCH: Add x32 init-first.c


On Tue, May 15, 2012 at 10:41 AM, Roland McGrath <roland@hack.frob.com> wrote:
>> On Tue, May 15, 2012 at 9:52 AM, Roland McGrath <roland@hack.frob.com> wrote:
>> > Use libc_hidden_proto and libc_hidden_data_def.
>>
>> __vdso_clock_gettime is exported to libpthread. ?Will
>> libc_hidden_proto and libc_hidden_data_def work
>> with it?
>
> Of course, just like they work on all the exported functions.

Does this one look OK?

Thanks.

-- 
H.J.
---
	* sysdeps/unix/sysv/linux/x86_64/x32/init-first.c: New.

diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/init-first.c
b/sysdeps/unix/sysv/linux/x86_64/x32/init-first.c
new file mode 100644
index 0000000..c2aea9d
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/init-first.c
@@ -0,0 +1,40 @@
+/* Copyright (C) 2012 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifdef SHARED
+# include <dl-vdso.h>
+# include <bits/libc-vdso.h>
+
+long int (*__vdso_clock_gettime) (clockid_t, struct timespec *)
+  __attribute__ ((nocommon));
+libc_hidden_proto (__vdso_clock_gettime)
+libc_hidden_data_def (__vdso_clock_gettime)
+
+static inline void
+_libc_vdso_platform_setup (void)
+{
+  PREPARE_VERSION (linux26, "LINUX_2.6", 61765110);
+
+  void *p = _dl_vdso_vsym ("__vdso_clock_gettime", &linux26);
+  PTR_MANGLE (p);
+  __vdso_clock_gettime = p;
+}
+
+# define VDSO_SETUP _libc_vdso_platform_setup
+#endif
+
+#include "../../init-first.c"


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