Update.

1998-04-16 07:42 Geoff Keating <geoffk@ozemail.com.au> * Makeconfig [!build-static]: Link `static' binaries with libc_pic.a. Still need *FLAGS-.o because we still sometimes build .o files. * db2/Makefile: Don't build libndbm.a if !build-static. 1998-04-16 07:42 Geoff Keating <geoffk@ozemail.com.au> * configure.in: New test for broken gcc on PowerPC. * sysdeps/powerpc/atomicity.h: Use result of test. * linuxthreads/sysdeps/powerpc/pt-machine.h: Use result of test. * math/libm-test.c: Update many of the epsilon to match actual performance. * sysdeps/libm-ieee754/e_exp.c: Reduce the number of branches. * sysdeps/libm-ieee754/e_expf.c: Likewise. * sysdeps/libm-ieee754/s_exp2.c: Likewise. * sysdeps/libm-ieee754/s_exp2f.c: Likewise. * sysdeps/libm-ieee754/e_pow.c: Correct typo. * sysdeps/powerpc/elf/libc-start.c: New file. * sysdeps/powerpc/elf/start.S: New file, use libc-start. * sysdeps/powerpc/elf/start.c: Delete. * sysdeps/unix/sysv/linux/powerpc/Dist: Remove syscall.h * sysdeps/unix/sysv/linux/powerpc/syscall.h: Delete. It was unused. * sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c: Correct previous few patches.
2025-07-30 22:43:12 +03:00 · 1998-05-06 14:43:15 +00:00
parent b22fc5f565
commit 6600049466
15 changed files with 297 additions and 123 deletions
--- a/sysdeps/powerpc/elf/libc-start.c
+++ b/sysdeps/powerpc/elf/libc-start.c
@ -0,0 +1,100 @@
+/* Copyright (C) 1998 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  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 <elf/ldsodefs.h>
+
+extern void __libc_init_first (int argc, char **argv, char **envp);
+
+extern int _dl_starting_up;
+weak_extern (_dl_starting_up)
+extern int __libc_multiple_libcs;
+
+struct startup_info
+{
+  void *sda_base;
+  int (*main) (int, char **, char **, void *);
+  int (*init) (int, char **, char **, void *);
+  void (*fini) (void);
+};
+
+int
+__libc_start_main (int argc, char **argv, char **envp,
+		   void *auxvec, void (*rtld_fini) (void),
+		   struct startup_info *stinfo,
+		   char **stack_on_entry)
+{
+#ifndef PIC
+  /* 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.  */
+  int *dummy_addr = &_dl_starting_up;
+
+  __libc_multiple_libcs = dummy_addr && !_dl_starting_up;
+#endif
+
+  /* the PPC SVR4 ABI says that the top thing on the stack will
+     be a NULL pointer, so if not we assume that we're being called
+     as a statically-linked program by Linux...	 */
+  if (*stack_on_entry != NULL)
+    {
+      /* ...in which case, we have argc as the top thing on the
+	 stack, followed by argv (NULL-terminated), envp (likewise),
+	 and the auxilary vector.  */
+      argc = *(int *) stack_on_entry;
+      argv = stack_on_entry + 1;
+      envp = argv + argc + 1;
+      auxvec = envp;
+      while (*(char **) auxvec != NULL)
+	++auxvec;
+      ++auxvec;
+      rtld_fini = NULL;
+    }
+
+  /* Register the destructor of the dynamic linker if there is any.  */
+  if (rtld_fini != NULL)
+    atexit (rtld_fini);
+
+  /* Set the global _environ variable correctly.  */
+  __environ = envp;
+
+  /* Call the initializer of the libc.  */
+#ifdef PIC
+  if (_dl_debug_impcalls)
+    _dl_debug_message (1, "\ninitialize libc\n\n", NULL);
+#endif
+  __libc_init_first (argc, argv, envp);
+
+  /* Call the initializer of the program.  */
+#ifdef PIC
+  if (_dl_debug_impcalls)
+    _dl_debug_message (1, "\ninitialize program: ", argv[0], "\n\n", NULL);
+#endif
+  stinfo->init (argc, argv, __environ, auxvec);
+
+  /* Register the destructor of the program.  */
+  atexit (stinfo->fini);
+
+#ifdef PIC
+  if (_dl_debug_impcalls)
+    _dl_debug_message (1, "\ntransferring control: ", argv[0], "\n\n", NULL);
+#endif
+
+  exit (stinfo->main (argc, argv, __environ, auxvec));
+}