1 files changed, 111 insertions, 0 deletions
diff --git a/sysdeps/powerpc/elf/start.c b/sysdeps/powerpc/elf/start.c
new file mode 100644
index 0000000000..9b1cf1c026
--- /dev/null
+++ b/sysdeps/powerpc/elf/start.c
@@ -0,0 +1,111 @@
+/* Startup code compliant to the ELF PowerPC ABI.
+   Copyright (C) 1997 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.  */
+
+/* This is SVR4/PPC ABI compliant, and works under Linux when
+   statically linked.  */
+
+#include <unistd.h>
+#include <stdlib.h>
+
+/* Just a little assembler stub before gcc gets its hands on our
+   stack pointer... */
+asm ("\
+	.text
+	.globl _start
+_start:
+ # save the stack pointer, in case we're statically linked under Linux
+        mr 8,1
+ # set up an initial stack frame, and clear the LR
+        addi 1,1,-16
+        clrrwi 1,1,4
+        li 0,0
+        stw 0,0(1)
+        mtlr 0
+ # set r13 to point at the 'small data area'
+        lis 13,_SDA_BASE_@ha
+        addi 13,13,_SDA_BASE_@l
+ # and continue below.
+        b __start1
+");
+
+/* Define a symbol for the first piece of initialized data.  */
+int __data_start = 0;
+weak_alias (__data_start, data_start)
+
+/* these probably should go, at least go somewhere else
+   (sysdeps/mach/something?). */
+void (*_mach_init_routine) (void);
+void (*_thread_init_routine) (void);
+
+void __libc_init_first (int argc, char **argv, char **envp);
+int main (int argc, char **argv, char **envp, void *auxvec);
+#ifdef HAVE_INITFINI
+void _init (void);
+void _fini (void);
+#endif
+
+
+static void __start1(int argc, char **argv, char **envp,
+		     void *auxvec, void (*exitfn) (void), char **arguments)
+     __attribute__ ((unused));
+static void
+__start1(int argc, char **argv, char **envp,
+	 void *auxvec, void (*exitfn) (void),
+	 char **arguments)
+{
+  /* 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. */
+  int abi_compliant_startup = *arguments == NULL;
+
+  if (!abi_compliant_startup)
+  {
+    argc = *(int *) arguments;
+    argv = arguments+1;
+    envp = argv+argc+1;
+    auxvec = envp;
+    while (auxvec != NULL)
+      auxvec++;
+    auxvec++;
+    exitfn = NULL;
+  }
+
+  if (exitfn != NULL)
+    atexit (exitfn);
+
+  /* libc init routine, in case we are statically linked
+     (otherwise ld.so will have called it when it loaded libc, but
+     calling it twice doesn't hurt). */
+  __libc_init_first (argc, argv, envp);
+
+#ifdef HAVE_INITFINI
+  /* ELF constructors/destructors */
+  atexit (_fini);
+  _init ();
+#endif
+
+  /* Stuff so we can build Mach/Linux executables (like vmlinux).  */
+  if (_mach_init_routine != 0)
+    _mach_init_routine ();
+  if (_thread_init_routine != 0)
+    _thread_init_routine ();
+
+  /* the rest of the program */
+  exit (main (argc, argv, envp, auxvec));
+}