about summary refs log tree commit diff
path: root/sysdeps/unix/sysv/aix/libc-start.c
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/unix/sysv/aix/libc-start.c')
-rw-r--r--sysdeps/unix/sysv/aix/libc-start.c290
1 files changed, 0 insertions, 290 deletions
diff --git a/sysdeps/unix/sysv/aix/libc-start.c b/sysdeps/unix/sysv/aix/libc-start.c
deleted file mode 100644
index 813e28d09b..0000000000
--- a/sysdeps/unix/sysv/aix/libc-start.c
+++ /dev/null
@@ -1,290 +0,0 @@
-/* Initialization code run first thing by the XCOFF startup code.  AIX version.
-   Copyright (C) 2001, 2002 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, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
-
-#include <stdlib.h>
-#include <unistd.h>
-#include <sys/types.h>
-
-/* hack to use uchar's */
-typedef unsigned char uchar;
-#include <xcoff.h>
-#include <rtinit.h>
-#include <dlldr.h>
-#include <bits/libc-lock.h>
-
-extern void __libc_init_first (int argc, char **argv, char **envp);
-
-/* XXX disable for now
-extern int __libc_multiple_libcs; */
-
-/* XXX normally defined in generic/dl-sydep.c, hack it into existance
-extern void *__libc_stack_end; */
-void *__libc_stack_end;
-
-  struct __libc_start_data_rec {
-    void *stack;
-    void *toc;
-    int argc;
-    char **argv;
-    char **envp;
-    char *data;
-    char *text;
-    unsigned mcount;
-    unsigned special;
-    int (*main)(int, char **, char **);
-    void (*init)(void);
-    void (*fini)(void);
-    void (*rtld_fini)(void);
-  };
-
-extern struct __libc_start_data_rec __libc_start_data;
-extern int errno;
-
-/* The first piece of initialized data.  */
-int __data_start = 0;
-
-#ifndef HAVE_ELF
-/* Since gcc/crtstuff.c won't define it unless the ELF format is used
-   we will need to define it here.  */
-void *__dso_handle = NULL;
-#endif
-
-/* AIX kernel function */
-extern int __loadx (int flag, void *module, void *arg1, void *arg2,
-		    void *arg3);
-/* Needed by setenv */
-char  **__environ;
-
-/*
- * Find __rtinit symbol
- *
- * __RTINIT *find_rtinit()
- *
- * __RTINIT        *rti - pointer to __rtinit data structure
- */
-
-static __RTINIT *
-find_rtinit (void)
-{
-  struct xcoffhdr *xcoff_hdr;
-  SCNHDR *sec_hdr;
-  SCNHDR *ldr_sec_hdr;
-  SCNHDR *data_sec_hdr;
-  LDSYM *ldsym_hdr;
-  __RTINIT *rtl;
-
-  xcoff_hdr = (struct xcoffhdr *) __libc_start_data.text;
-  sec_hdr   = (SCNHDR *) ((caddr_t) &xcoff_hdr->aouthdr
-			  + xcoff_hdr->filehdr.f_opthdr);
-  ldr_sec_hdr = (SCNHDR *) (sec_hdr + (xcoff_hdr->aouthdr.o_snloader - 1));
-  ldsym_hdr   = (LDSYM  *) ((caddr_t) xcoff_hdr + ldr_sec_hdr->s_scnptr
-			    + LDHDRSZ);
-
-  if (__libc_start_data.mcount <= 0)
-    {
-      if (!ldr_sec_hdr->s_scnptr)
-	return NULL;
-
-      if (memcmp (ldsym_hdr, RTINIT_NAME, sizeof(RTINIT_NAME) - 1) != 0)
-	return NULL;
-    }
-
-  data_sec_hdr   = (SCNHDR *) (sec_hdr + (xcoff_hdr->aouthdr.o_sndata - 1));
-  rtl = (__RTINIT *) (ldsym_hdr->l_value
-		      + (__libc_start_data.data - data_sec_hdr->s_vaddr));
-  return rtl;
-}
-
-/* The mod_init1 calls every initialization function
-   for a given module.
-
-     void mod_init1(handler, rti)
-
-     void *handler - if NULL init funtions for modules loaded at exec time
-                     are being executed. Otherwise, the handler points to the
-                     module loaded.
-
-     __RTINIT *rti - pointer to __rtinit data structure (with rti->init_offset
-                     not equal to zero)
- */
-
-static void
-mod_init1 (void *handler,__RTINIT *rtl)
-{
-  __RTINIT_DESCRIPTOR *descriptor;
-
-  descriptor = (__RTINIT_DESCRIPTOR *) ((caddr_t) &rtl->rtl
-					+ rtl->init_offset);
-  while (descriptor->f != NULL)
-    {
-      if (!(descriptor->flags & _RT_CALLED))
-	{
-	  descriptor->flags |=  _RT_CALLED;
-	  /* Execute init/fini.  */
-	  descriptor->f (handler, rtl, descriptor);
-	}
-      descriptor = (__RTINIT_DESCRIPTOR *) ((caddr_t) descriptor
-					    + rtl->__rtinit_descriptor_size);
-    }
-}
-
-/* The modinit() function performs run-time linking, if enabled, and calling
-   the init() function for all loaded modules.
-
-   int modinit()
- */
-
-#define DL_BUFFER_SIZE 1000
-
-static int
-modinit (void)
-{
-  int *handler = NULL;
-  __RTINIT *rtinit_info = NULL;
-  int flag;
-  DL_INFO dl_buffer[DL_BUFFER_SIZE];
-  DL_INFO *dl_info = dl_buffer;
-  int i;
-
-  /* Find __rtinit symbols */
-  rtinit_info = find_rtinit ();
-
-  flag = DL_EXECQ;
-  if (rtinit_info && rtinit_info->rtl)
-    flag |= DL_LOAD_RTL;
-
-  /* Get a list of modules that have __rtinit.  */
-  if (__loadx (flag, dl_info, (void *) sizeof (dl_buffer), NULL, NULL))
-    exit (0x90);
-
-  if (( dl_info[0].dlinfo_xflags & DL_INFO_OK))
-    {
-      rtinit_info = find_rtinit ();
-      if ((rtinit_info != NULL) & (rtinit_info->rtl != NULL))
-	{
-	  if ((*rtinit_info->rtl) (dl_info, 0))
-	    exit (0x90);
-	}
-    }
-
-  /* Initialization each module loaded that has __rtinit. */
-  if (dl_info[0].dlinfo_xflags & DL_INFO_OK)
-    {
-      for (i = 1; i < dl_info[0].dlinfo_arraylen + 1; ++i)
-	if (dl_info[i].dlinfo_flags & DL_HAS_RTINIT)
-	  {
-	    rtinit_info = find_rtinit ();
-	    if (rtinit_info)
-	      mod_init1 (handler, rtinit_info);
-	  }
-    }
-
-  return 0;
-}
-
-
-void
-__libc_start_init (void)
-{
-  /* Do run-time linking, if enabled and call the init()
-     for all loaded modules. */
-  if (__libc_start_data.mcount != __libc_start_data.special)
-    modinit ();
-}
-
-/* For now these are just stubs. */
-void
-__libc_start_fini (void)
-{
-}
-
-void
-__libc_start_rtld_fini (void)
-{
-}
-
-void
-__libc_start_main (void)
-{
-#ifndef SHARED
-
-  /* The next variable is only here to work around a bug in gcc <= 2.7.2.2.
-     If the address would be taken inside the expression the optimizer
-     would try to be too smart and throws it away.  Grrr.  */
-
-  /* XXX disable for now
-  int *dummy_addr = &_dl_starting_up;
-
-  __libc_multiple_libcs = dummy_addr && !_dl_starting_up; */
-#endif
-
-  /* Store the lowest stack address.  */
-  __libc_stack_end = __libc_start_data.stack;
-
-  /* Used by setenv */
-  __environ = __libc_start_data.envp;
-
-#ifndef SHARED
-  /* Clear errno. */
-    errno = 0;
-
-  /* Some security at this point.  Prevent starting a SUID binary where
-     the standard file descriptors are not opened.  We have to do this
-     only for statically linked applications since otherwise the dynamic
-     loader did the work already.  */
-  if (__builtin_expect (__libc_enable_secure, 0))
-    __libc_check_standard_fds ();
-
-#endif
-
-  /* Register the destructor of the dynamic linker if there is any.  */
-  if (__builtin_expect (__libc_start_data.rtld_fini != NULL, 1))
-    __cxa_atexit ((void (*) (void *)) __libc_start_data.rtld_fini, NULL, NULL);
-
-  /* Call the initializer of the libc.  This is only needed here if we
-     are compiling for the static library in which case we haven't
-     run the constructors in `_dl_start_user'.  */
-#ifndef SHARED
-  __libc_init_first (__libc_start_data.argc, __libc_start_data.argv,
-		     __libc_start_data.envp);
-#endif
-
-  /* Register the destructor of the program, if any.  */
-  if (__libc_start_data.fini)
-    __cxa_atexit ((void (*) (void *)) __libc_start_data.fini, NULL, NULL);
-
-  /* Call the initializer of the program, if any.  */
-#ifdef SHARED
-  if (__builtin_expect (GL(dl_debug_mask) & DL_DEBUG_IMPCALLS, 0))
-    _dl_debug_printf ("\ninitialize program: %s\n\n",
-		      __libc_start_data.argv[0]);
-#endif
-  if (__libc_start_data.init)
-    (*__libc_start_data.init) ();
-
-#ifdef SHARED
-  if (__builtin_expect (GL(dl_debug_mask) & DL_DEBUG_IMPCALLS, 0))
-    _dl_debug_printf ("\ntransferring control: %s\n\n",
-		      __libc_start_data.argv[0]);
-#endif
-
-  exit ((*__libc_start_data.main) (__libc_start_data.argc,
-				   __libc_start_data.argv,
-				   __libc_start_data.envp));
-}