20000317 sourceware import

libgloss/rs6000/sim-crt0.S

@@ -0,0 +1,45 @@
+/*
+ * crt0.S -- startup file for PowerPC systems.
+ *
+ * Copyright (c) 1995 Cygnus Support
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+
+#include "ppc-asm.h"
+
+	.file	"sim-crt0.S"
+	.text
+	.globl	_start
+	.type	_start,@function
+_start:
+	lis	r0,0
+	stw	r0,0(sp)	/* clear back chain */
+	stwu	sp,-64(sp)	/* push another stack frame */
+
+	/* Let her rip */
+	bl	FUNC_NAME(main)
+
+	/* return value from main is argument to exit */
+	bl	FUNC_NAME(exit)
+.Lstart:
+	.size	_start,.Lstart-_start
+
+	.extern	FUNC_NAME(atexit)
+	.globl	FUNC_NAME(__atexit)
+	.section ".sdata","aw"
+	.align	2
+FUNC_NAME(__atexit):			/* tell C's eabi-ctor's we have an atexit function */
+	.long	FUNC_NAME(atexit)@fixup	/* and that it is to register __do_global_dtors */
+
+	.section ".fixup","aw"
+	.align	2
+	.long	FUNC_NAME(__atexit)