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Diffstat (limited to 'sysdeps/unix/sysv/linux/init-first.c')
-rw-r--r--sysdeps/unix/sysv/linux/init-first.c45
1 files changed, 36 insertions, 9 deletions
diff --git a/sysdeps/unix/sysv/linux/init-first.c b/sysdeps/unix/sysv/linux/init-first.c
index a63200c1ae..aa7d9c4ac0 100644
--- a/sysdeps/unix/sysv/linux/init-first.c
+++ b/sysdeps/unix/sysv/linux/init-first.c
@@ -20,6 +20,7 @@ Cambridge, MA 02139, USA. */
#include <unistd.h>
#include <sysdep.h>
#include <fpu_control.h>
+#include <linux/personality.h>
#include "init-first.h"
extern void __libc_init (int, char **, char **);
@@ -28,6 +29,11 @@ extern void __libc_global_ctors (void);
/* The function is called from assembly stubs the compiler can't see. */
static void init (void *) __attribute__ ((unused));
+extern int __libc_is_static;
+#ifdef PIC
+weak_extern (__libc_is_static)
+#endif
+
static void
init (void *data)
{
@@ -37,15 +43,36 @@ init (void *data)
char **argv = (char **)data + 1;
char **envp = &argv[argc + 1];
- /* The `personality' system call takes one argument that chooses the
- "personality", i.e. the set of system calls and such. Zero is the
- native Linux value; we must make this call first thing to disable
- emulation of some other system that might have been enabled by default
- based on the executable format. */
- __personality (0);
-
- /* Set the FPU control word to the proper default value. */
- __setfpucw (__fpu_control);
+#ifdef PIC
+ if (&__libc_is_static != NULL)
+#endif
+ {
+#ifdef PIC
+ /* We must not call `personality' twice. */
+ if (__libc_is_static == 0)
+#endif
+ {
+ /* The `personality' system call takes one argument that
+ chooses the "personality", i.e. the set of system calls
+ and such. We must make this call first thing to disable
+ emulation of some other system that might have been
+ enabled by default based on the executable format. */
+ __personality (PER_LINUX);
+
+ /* Set the FPU control word to the proper default value. */
+ __setfpucw (__fpu_control);
+ }
+
+ /* We set LIBC_IS_STATIC to a value > 0 for the static library
+ and < 0 for the shared library. This information might be
+ useful for the running program but it is mainly necessary for
+ the above `if' statement. */
+#ifdef PIC
+ __libc_is_static = -1;
+#else
+ __libc_is_static = 1;
+#endif
+ }
__environ = envp;
__libc_init (argc, argv, envp);