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-rw-r--r--sysdeps/sparc/elf/start.c68
1 files changed, 68 insertions, 0 deletions
diff --git a/sysdeps/sparc/elf/start.c b/sysdeps/sparc/elf/start.c
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+++ b/sysdeps/sparc/elf/start.c
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+/* Copyright (C) 1991, 1992, 1993, 1994, 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. */
+
+#include <errno.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+extern char **__environ;
+
+extern void __libc_init_first __P ((int argc, char **argv, char **envp));
+extern int main __P ((int argc, char **argv, char **envp));
+
+register long int sp asm("%sp"), fp asm("%fp");
+
+void
+_start (void)
+{
+ /* It is important that these be declared `register'.
+ Otherwise, when compiled without optimization, they are put on the
+ stack, which loses completely after we zero the FP. */
+ register int argc;
+ register char **argv, **envp;
+ register long int g1 asm ("%g1");
+ unsigned long int copy_g1 = g1;
+
+ /* Unwind the frame built when we entered the function. */
+ asm("restore");
+ if (copy_g1)
+ atexit (copy_g1);
+
+ /* And clear the frame pointer. */
+ fp = 0;
+
+ /* The argument info starts after one register
+ window (64 bytes) past the SP. */
+ argc = ((int *) sp)[16];
+ argv = (char **) &((int *) sp)[17];
+ envp = &argv[argc + 1];
+ __environ = envp;
+
+ /* Allocate 24 bytes of stack space for the register save area. */
+ sp -= 24;
+ __libc_init_first (argc, argv, envp);
+#ifdef ELF_INIT_FINI
+ {
+ extern void _fini (void);
+ atexit (_fini);
+ _init ();
+ }
+#endif
+ exit (main (argc, argv, envp));
+}