diff options
Diffstat (limited to 'libc/sysdeps/linux/powerpc/crt0.S')
| -rw-r--r-- | libc/sysdeps/linux/powerpc/crt0.S | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/powerpc/crt0.S b/libc/sysdeps/linux/powerpc/crt0.S new file mode 100644 index 000000000..9eed91ebf --- /dev/null +++ b/libc/sysdeps/linux/powerpc/crt0.S @@ -0,0 +1,58 @@ +/* + * uC-libc/sysdeps/linux/powerpc/crt0.S + * process init code for powerpc + * + * Copyright (C) 2001 by Lineo, Inc. + * Author: David A. Schleef <ds@schleef.org> + * + * This program 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. + * + * This program 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 this program; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +/* + _start is called with the following registers initialized: + + r1 null stack frame + r3 argc + r4 argv + r5 envp + r6 auxiliary vector. ignored. + r7 function pointer to jump to when main() exits. If + this is non-zero, it should be registered with atexit(). + Linux always (?) sets r7 to NULL, so it is not implemented + here. + */ + + +.text + .global _start + .global __uClibc_main + + .type _start,%function + .type __uClibc_main,%function + +_start: + /* create 2 empty stack frames */ + stwu 1,-32(1) + + lwz 3,32(1) + addi 4,1,36 + addi 5,1,40 + rlwinm 0,3,2,0,29 + add 5,5,0 + + bl __uClibc_main + + |