diff options
| author | Eric Andersen <andersen@codepoet.org> | 2001-01-12 10:16:05 +0000 |
|---|---|---|
| committer | Eric Andersen <andersen@codepoet.org> | 2001-01-12 10:16:05 +0000 |
| commit | 77879554671206102471bb282accb3251395d151 (patch) | |
| tree | 4bc8854140028577b324e3ddaf05d043744618a3 /libc/sysdeps/linux/m68k/crt0.S | |
| parent | e4492b9c21b645018b2d7702665be8c1eb4a1b5c (diff) | |
Thanks to James Graves <jgraves@deltamobile.com>, we now have
a first pass at getting m68k working. It may have some problems,
but should now be fairly close.
Diffstat (limited to 'libc/sysdeps/linux/m68k/crt0.S')
| -rw-r--r-- | libc/sysdeps/linux/m68k/crt0.S | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/m68k/crt0.S b/libc/sysdeps/linux/m68k/crt0.S new file mode 100644 index 000000000..1c64ea960 --- /dev/null +++ b/libc/sysdeps/linux/m68k/crt0.S @@ -0,0 +1,75 @@ +/* Copyright (C) 1991, 1992 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., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + + .global _start + .global __main + .global _end +/* .global __data_start */ + + .bss + .global environ +environ: + .long 0 + + .text +_start: /* renamed from __start */ + nop + nop + + movea.l %d5, %a5 + + lea __bss_start(%a5), %a0 + lea end(%a5), %a1 + + /* Copy 0 to %a0 until %a0 == %a1 */ + /* + From my understanding of linux/fs/binfmt_flat.c for uClinux, + this is not necessary anymore. The loader will clear out + the BSS for us. - jgraves@deltamobile.com + +L1: + movel #0, %a0@+ + cmpal %a0, %a1 + bhi L1 + */ + + move.l 8(%sp), %d5 + move.l %d5, environ(%a5) + + bsr main + + move.l %d0,%sp@- + bsr exit /* Invoke exit() routine */ + +#ifdef NO_LIBGCC + /* If that didn't kill us, ... */ +_exit: + move.l %sp@+,%d1 + moveq #1,%d0 /* SYS_exit */ + trap #0 + +__main: + rts +#else + + .global _cleanup +_cleanup: + rts /* nothing to clean up */ + +#endif /* NO_LIBGCC */ |