Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/arch/arm/lib/testchangebit.S b/arch/arm/lib/testchangebit.S
new file mode 100644
index 0000000..4aba467
--- /dev/null
+++ b/arch/arm/lib/testchangebit.S
@@ -0,0 +1,29 @@
+/*
+ * linux/arch/arm/lib/testchangebit.S
+ *
+ * Copyright (C) 1995-1996 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+ .text
+
+ENTRY(_test_and_change_bit_be)
+ eor r0, r0, #0x18 @ big endian byte ordering
+ENTRY(_test_and_change_bit_le)
+ add r1, r1, r0, lsr #3
+ and r3, r0, #7
+ mov r0, #1
+ save_and_disable_irqs ip, r2
+ ldrb r2, [r1]
+ tst r2, r0, lsl r3
+ eor r2, r2, r0, lsl r3
+ strb r2, [r1]
+ restore_irqs ip
+ moveq r0, #0
+ RETINSTR(mov,pc,lr)
+
+