1 files changed, 29 insertions, 0 deletions
diff --git a/arch/ppc/xmon/setjmp.c b/arch/ppc/xmon/setjmp.c
new file mode 100644
index 000000000000..28352bac2ae6
--- /dev/null
+++ b/arch/ppc/xmon/setjmp.c
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 1996 Paul Mackerras.
+ *
+ * NB this file must be compiled with -O2.
+ */
+
+int
+xmon_setjmp(long *buf)
+{
+    asm ("mflr 0; stw 0,0(%0);"
+	 "stw 1,4(%0); stw 2,8(%0);"
+	 "mfcr 0; stw 0,12(%0);"
+	 "stmw 13,16(%0)"
+	 : : "r" (buf));
+    /* XXX should save fp regs as well */
+    return 0;
+}
+
+void
+xmon_longjmp(long *buf, int val)
+{
+    if (val == 0)
+	val = 1;
+    asm ("lmw 13,16(%0);"
+	 "lwz 0,12(%0); mtcrf 0x38,0;"
+	 "lwz 0,0(%0); lwz 1,4(%0); lwz 2,8(%0);"
+	 "mtlr 0; mr 3,%1"
+	 : : "r" (buf), "r" (val));
+}