From 849369d6c66d3054688672f97d31fceb8e8230fb Mon Sep 17 00:00:00 2001
From: root <root@artemis.panaceas.org>
Date: Fri, 25 Dec 2015 04:40:36 +0000
Subject: initial_commit

---
 arch/alpha/lib/dbg_stackcheck.S | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 arch/alpha/lib/dbg_stackcheck.S

(limited to 'arch/alpha/lib/dbg_stackcheck.S')

diff --git a/arch/alpha/lib/dbg_stackcheck.S b/arch/alpha/lib/dbg_stackcheck.S
new file mode 100644
index 00000000..78f6b924
--- /dev/null
+++ b/arch/alpha/lib/dbg_stackcheck.S
@@ -0,0 +1,27 @@
+/*
+ * arch/alpha/lib/dbg_stackcheck.S
+ * Contributed by Richard Henderson (rth@tamu.edu)
+ *
+ * Verify that we have not overflowed the stack.  Oops if we have.
+ */
+
+#include <asm/asm-offsets.h>
+
+	.text
+	.set noat
+
+	.align 3
+	.globl _mcount
+	.ent _mcount
+_mcount:
+	.frame $30, 0, $28, 0
+	.prologue 0
+
+	lda	$0, TASK_SIZE($8)
+	cmpult	$30, $0, $0
+	bne	$0, 1f
+	ret	($28)
+1:	stq	$31, -8($31)	# oops me, damn it.
+	br	1b
+
+	.end _mcount
-- 
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