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-rw-r--r--arch/sparc/lib/ashldi3.S38
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/sparc/lib/ashldi3.S b/arch/sparc/lib/ashldi3.S
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+++ b/arch/sparc/lib/ashldi3.S
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+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * ashldi3.S: GCC emits these for certain drivers playing
+ * with long longs.
+ *
+ * Copyright (C) 1999 David S. Miller (davem@redhat.com)
+ */
+
+#include <linux/linkage.h>
+#include <asm/export.h>
+
+ .text
+ENTRY(__ashldi3)
+ cmp %o2, 0
+ be 9f
+ mov 0x20, %g2
+
+ sub %g2, %o2, %g2
+ cmp %g2, 0
+ bg 7f
+ sll %o0, %o2, %g3
+
+ neg %g2
+ clr %o5
+ b 8f
+ sll %o1, %g2, %o4
+7:
+ srl %o1, %g2, %g2
+ sll %o1, %o2, %o5
+ or %g3, %g2, %o4
+8:
+ mov %o4, %o0
+ mov %o5, %o1
+9:
+ retl
+ nop
+ENDPROC(__ashldi3)
+EXPORT_SYMBOL(__ashldi3)