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authorH.J. Lu <hjl.tools@gmail.com>2012-08-09 16:04:37 -0700
committerH.J. Lu <hjl.tools@gmail.com>2012-08-09 16:04:37 -0700
commitf85fa27058eb7d4b56b8deaf885064cf8d730f68 (patch)
treef7e63a9691ff3c88f60506816e388e17bcfbeb89 /sysdeps/unix
parent6dcf80c78273c5e0bdcacaf64a9b34fd930b405f (diff)
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Avoid DWARF definition DIE on ifunc symbols
Diffstat (limited to 'sysdeps/unix')
-rw-r--r--sysdeps/unix/sysv/linux/x86_64/time.c19
1 files changed, 15 insertions, 4 deletions
diff --git a/sysdeps/unix/sysv/linux/x86_64/time.c b/sysdeps/unix/sysv/linux/x86_64/time.c
index 0e05ddd523..65703cab90 100644
--- a/sysdeps/unix/sysv/linux/x86_64/time.c
+++ b/sysdeps/unix/sysv/linux/x86_64/time.c
@@ -16,11 +16,20 @@
    <http://www.gnu.org/licenses/>.  */
 
 #ifdef SHARED
+/* Redefine time so that the compiler won't complain about the type
+   mismatch with the IFUNC selector in strong_alias, below.  */
+#undef time
+#define time __redirect_time
+#include <time.h>
+
 #include <dl-vdso.h>
 
 #define VSYSCALL_ADDR_vtime	0xffffffffff600400
 
-void *time_ifunc (void) __asm__ ("time");
+/* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
+   ifunc symbol properly.  */
+extern __typeof (__redirect_time) __libc_time;
+void *time_ifunc (void) __asm__ ("__libc_time");
 
 void *
 time_ifunc (void)
@@ -30,7 +39,11 @@ time_ifunc (void)
   /* If the vDSO is not available we fall back on the old vsyscall.  */
   return _dl_vdso_vsym ("__vdso_time", &linux26) ?: (void *) VSYSCALL_ADDR_vtime;
 }
-__asm (".type time, %gnu_indirect_function");
+__asm (".type __libc_time, %gnu_indirect_function");
+
+#undef time
+strong_alias (__libc_time, time)
+libc_hidden_ver (__libc_time, time)
 
 #else
 
@@ -45,5 +58,3 @@ time (time_t *t)
 }
 
 #endif
-
-strong_alias (time, __GI_time)