1 files changed, 51 insertions, 0 deletions
diff --git a/src/lib/stack.c b/src/lib/stack.c
new file mode 100644
index 0000000000..3f04b63828
--- /dev/null
+++ b/src/lib/stack.c
@@ -0,0 +1,51 @@
+/*
+This software and ancillary information (herein called SOFTWARE )
+called LinuxBIOS          is made available under the terms described
+here.  The SOFTWARE has been approved for release with associated
+LA-CC Number 00-34   .  Unless otherwise indicated, this SOFTWARE has
+been authored by an employee or employees of the University of
+California, operator of the Los Alamos National Laboratory under
+Contract No. W-7405-ENG-36 with the U.S. Department of Energy.  The
+U.S. Government has rights to use, reproduce, and distribute this
+SOFTWARE.  The public may copy, distribute, prepare derivative works
+and publicly display this SOFTWARE without charge, provided that this
+Notice and any statement of authorship are reproduced on all copies.
+Neither the Government nor the University makes any warranty, express
+or implied, or assumes any liability or responsibility for the use of
+this SOFTWARE.  If SOFTWARE is modified to produce derivative works,
+such modified SOFTWARE should be clearly marked, so as not to confuse
+it with the version available from LANL.
+ */
+/* Copyright 2000, Ron Minnich, Advanced Computing Lab, LANL
+ * rminnich@lanl.gov
+ */
+
+#include <lib.h>
+#include <console/console.h>
+
+int checkstack(void *top_of_stack, int core)
+{
+	int i;
+	u32 *stack = (u32 *) (top_of_stack - CONFIG_STACK_SIZE);
+
+	if (stack[0] != 0xDEADBEEF){
+		printk(BIOS_ERR, "Stack overrun on CPU%d."
+			"Increase stack from current %d bytes\n",
+			CONFIG_STACK_SIZE, core);
+		return -1;
+	}
+
+	for(i = 0; i < CONFIG_STACK_SIZE/sizeof(stack[0]); i++){
+		if (stack[i] == 0xDEADBEEF)
+			continue;
+		printk(BIOS_SPEW, "CPU%d: stack from %p to %p:",
+			core,
+			stack,
+			&stack[CONFIG_STACK_SIZE/sizeof(stack[0])]);
+		printk(BIOS_SPEW, "Lowest stack address %p\n", &stack[i]);
+		return -1;
+	}
+
+	return 0;
+
+}