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update from main archive 960818

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This commit is contained in:
Ulrich Drepper
1996-08-19 01:07:44 +00:00
parent e9d258b798
commit 39778c6c9e
13 changed files with 71 additions and 65 deletions
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52
sysdeps/unix/sysv/linux/init-first.c
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@ -29,10 +29,12 @@ 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
extern int _dl_starting_up;
weak_extern (_dl_starting_up)
/* Set nonzero if we have to be prepared for more then one libc being
used in the process. Safe assumption if initializer never runs. */
int __libc_multiple_libcs = 1;
static void
init (void *data)
@ -43,39 +45,21 @@ init (void *data)
char **argv = (char **)data + 1;
char **envp = &argv[argc + 1];
/* XXX Another gcc bug. We marked the function as `unused' but it
is still optimized away. */
volatile void *foo __attribute__ ((unused)) = &init;
#ifdef PIC
if (&__libc_is_static != NULL)
#endif
__libc_multiple_libcs = &_dl_starting_up && ! _dl_starting_up;
/* We must not call `personality' twice. */
if (!__libc_multiple_libcs)
{
#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);
/* 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
/* Set the FPU control word to the proper default value. */
__setfpucw (__fpu_control);
}
__environ = envp;