h8300: Assembly functions

- remove symbol prefix
- new startup
- new clone syscall support

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

1 files changed, 91 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/h8300/crt1.S b/libc/sysdeps/linux/h8300/crt1.S
new file mode 100644
index 000000000..847872ad7
--- /dev/null
+++ b/libc/sysdeps/linux/h8300/crt1.S
@@ -0,0 +1,91 @@
+/* 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, see <http://www.gnu.org/licenses/>.  */
+
+#include <features.h>
+
+	.global	_start
+	.global __exit
+	.global atexit
+	.global main
+
+#ifdef __H8300S__
+	.h8300s
+#else
+	.h8300h
+#endif
+/*
+void __uClibc_main(int (*main)(int, char **, char **), int argc,
+                    char **argv, void (*app_init)(void), void (*app_fini)(void),
+                    void (*rtld_fini)(void),void *stack_end attribute_unused)
+*/
+	.text
+
+_start: /* put here so that references to _start work with elf-PIC */
+
+	mov.l	@sp+,er1	/* argc */
+	mov.l	@sp+,er2	/* argv */
+	add.l	#4,sp
+
+#if !defined(__PIC__)
+	mov.l	sp, @-sp
+	sub.l	er0,er0
+	mov.l	er0,@-sp
+	mov.l	#_fini,er0
+	mov.l	er0,@-sp
+	mov.l	#_init,er0
+	mov.l	er0,@-sp
+	mov.l	#main,er0
+	jsr	@__uClibc_main
+#else
+	mov.l	sp, @-sp
+	sub.l	er0,er0
+	mov.l	er0,@-sp
+	mov.l	@(_fini@GOTOFF,er5),er0
+	mov.l	er0,@-sp
+	mov.l	@(_init@GOTOFF,er5),er0
+	mov.l	er0,@-sp
+	mov.l	@(main@GOTOFF,er5),er0
+	mov.l	@(__uClibc_main@GOTOFF,er5),er3
+	jsr	@er3
+#endif
+
+	/* If that didn't kill us, ... */
+__exit:
+	mov.l	er0,er1
+	sub.l	er0,er0
+	inc.l	#1,er0		 /* __NR_exit */
+	trapa	#0
+
+/*
+ *	this was needed for gcc/g++-builds,  atexit was not getting included
+ *	for some stupid reason,  this gets us a compiler
+ */
+empty_func:
+	rts
+	.weak atexit
+	atexit = empty_func
+
+
+/* Define a symbol for the first piece of initialized data.  */
+	.data
+	.globl _data_start
+_data_start:
+	.long 0
+	.weak data_start
+	data_start = _data_start
+