m68k: add crt files

diff --git a/ChangeLog.m68k b/ChangeLog.m68k
index 78f718fe37175dc4df816197eaebc31ba23b4bc4..7eace9206d3c8c96116f38ef82d8f33cb7dbdccc 100644 (file)
--- a/ChangeLog.m68k
+++ b/ChangeLog.m68k
@@ -1,5 +1,8 @@
 2012-02-08  Andreas Schwab  <schwab@linux-m68k.org>
 
+       * sysdeps/m68k/crti.S: New file.
+       * sysdeps/m68k/crtn.S: New file.
+
        * sysdeps/m68k/m680x0/sysdep.h (LOAD_GOT): Define.
        * sysdeps/m68k/coldfire/sysdep.h (LOAD_GOT): Define.
        * sysdeps/unix/sysv/linux/m68k/coldfire/m68k-helper.S: Remove.

diff --git a/sysdeps/m68k/crti.S b/sysdeps/m68k/crti.S
new file mode 100644 (file)
index 0000000..138bb02
--- /dev/null
+++ b/sysdeps/m68k/crti.S
@@ -0,0 +1,83 @@
+/* Special .init and .fini section support for m68k.
+   Copyright (C) 2012 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.
+
+   In addition to the permissions in the GNU Lesser General Public
+   License, the Free Software Foundation gives you unlimited
+   permission to link the compiled version of this file with other
+   programs, and to distribute those programs without any restriction
+   coming from the use of this file. (The GNU Lesser General Public
+   License restrictions do apply in other respects; for example, they
+   cover modification of the file, and distribution when not linked
+   into another program.)
+
+   Note that people who make modified versions of this file are not
+   obligated to grant this special exception for their modified
+   versions; it is their choice whether to do so. The GNU Lesser
+   General Public License gives permission to release a modified
+   version without this exception; this exception also makes it
+   possible to release a modified version which carries forward this
+   exception.
+
+   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.  */
+
+/* crti.S puts a function prologue at the beginning of the .init and
+   .fini sections and defines global symbols for those addresses, so
+   they can be called as functions.  The symbols _init and _fini are
+   magic and cause the linker to emit DT_INIT and DT_FINI.  */
+
+#include <libc-symbols.h>
+#include <sysdep.h>
+
+#ifndef PREINIT_FUNCTION
+# define PREINIT_FUNCTION __gmon_start__
+#endif
+
+#ifndef PREINIT_FUNCTION_WEAK
+# define PREINIT_FUNCTION_WEAK 1
+#endif
+
+#if PREINIT_FUNCTION_WEAK
+       weak_extern (PREINIT_FUNCTION)
+#else
+       .hidden PREINIT_FUNCTION
+#endif
+
+       .section .init,"ax",@progbits
+       .align  2
+       .globl  _init
+       .type   _init, @function
+_init:
+       link.w %fp, #0
+       move.l  %a5, -(%sp)
+       LOAD_GOT (%a5)
+#if PREINIT_FUNCTION_WEAK
+       tst.l   PREINIT_FUNCTION@GOT(%a5)
+       jeq     1f
+       jbsr    PREINIT_FUNCTION@PLTPC
+1:
+#else
+       jbsr    PREINIT_FUNCTION
+#endif
+
+       .section .fini,"ax",@progbits
+       .align  2
+       .globl  _fini
+       .type   _fini, @function
+_fini:
+       link.w %fp, #0
+       move.l  %a5, -(%sp)
+       LOAD_GOT (%a5)

diff --git a/sysdeps/m68k/crtn.S b/sysdeps/m68k/crtn.S
new file mode 100644 (file)
index 0000000..7e76d77
--- /dev/null
+++ b/sysdeps/m68k/crtn.S
@@ -0,0 +1,48 @@
+/* Special .init and .fini section support for m68k.
+   Copyright (C) 2012 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.
+
+   In addition to the permissions in the GNU Lesser General Public
+   License, the Free Software Foundation gives you unlimited
+   permission to link the compiled version of this file with other
+   programs, and to distribute those programs without any restriction
+   coming from the use of this file. (The GNU Lesser General Public
+   License restrictions do apply in other respects; for example, they
+   cover modification of the file, and distribution when not linked
+   into another program.)
+
+   Note that people who make modified versions of this file are not
+   obligated to grant this special exception for their modified
+   versions; it is their choice whether to do so. The GNU Lesser
+   General Public License gives permission to release a modified
+   version without this exception; this exception also makes it
+   possible to release a modified version which carries forward this
+   exception.
+
+   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.  */
+
+/* crtn.S puts function epilogues in the .init and .fini sections
+   corresponding to the prologues in crti.S. */
+
+       .section .init,"ax",@progbits
+       move.l  -4(%fp), %a5
+       unlk    %fp
+       rts
+
+       .section .fini,"ax",@progbits
+       move.l  -4(%fp), %a5
+       unlk    %fp
+       rts