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authorEric Andersen <andersen@codepoet.org>2001-03-16 01:06:29 +0000
committerEric Andersen <andersen@codepoet.org>2001-03-16 01:06:29 +0000
commit39f83819e26ed9c63386bdf254d2f6751f54cce9 (patch)
tree45ffe8236f3641ca0b5a9704b5c2b32d52e19d95 /libc/sysdeps/linux/powerpc/crt0.S
parentaed7ad54eb30fc388b95f98ad4980e8133975656 (diff)
Add powerpc port done by David Schleef <ds@schleef.org>
Diffstat (limited to 'libc/sysdeps/linux/powerpc/crt0.S')
-rw-r--r--libc/sysdeps/linux/powerpc/crt0.S58
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
+
+