1 files changed, 49 insertions, 0 deletions
diff --git a/lib/libc/alpha/gen/_ctx_start.S b/lib/libc/alpha/gen/_ctx_start.S
new file mode 100644
index 0000000..f17d1d5
--- /dev/null
+++ b/lib/libc/alpha/gen/_ctx_start.S
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2001 Daniel Eischen <deischen@freebsd.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Neither the name of the author nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * $FreeBSD$
+ */
+
+#include <machine/asm.h>
+
+
+/*
+ * A0-A5 are the first 6 arguments to the start routine with the
+ * remaining arguments (if any) placed on the stack.  S0 is the
+ * address of the user-supplied start routine, and S1 is the pointer
+ * to the ucontext.
+ */
+	.set	noreorder
+LEAF(_ctx_start,0)
+	mov	s0, t12
+	jsr	ra, (s0)	/* call start routine; args already set */
+	LDGP(ra)
+	mov	s1, a0		/* load A0 (arg 1) with pointer to ucontext */
+	CALL(_ctx_done)		/* call context completion routine */
+	CALL(abort)		/* should never return from above call */
+	RET
+END(_ctx_start)