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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));
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 16:14:41 +0000