Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 38 insertions, 0 deletions

diff --git a/arch/arm/lib/bswapsdi2.S b/arch/arm/lib/bswapsdi2.S
new file mode 100644
index 000000000..591ba077e
--- /dev/null
+++ b/arch/arm/lib/bswapsdi2.S
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+
+#if __LINUX_ARM_ARCH__ >= 6
+ENTRY(__bswapsi2)
+	rev r0, r0
+	bx lr
+ENDPROC(__bswapsi2)
+
+ENTRY(__bswapdi2)
+	rev r3, r0
+	rev r0, r1
+	mov r1, r3
+	bx lr
+ENDPROC(__bswapdi2)
+#else
+ENTRY(__bswapsi2)
+	eor r3, r0, r0, ror #16
+	mov r3, r3, lsr #8
+	bic r3, r3, #0xff00
+	eor r0, r3, r0, ror #8
+	ret lr
+ENDPROC(__bswapsi2)
+
+ENTRY(__bswapdi2)
+	mov ip, r1
+	eor r3, ip, ip, ror #16
+	eor r1, r0, r0, ror #16
+	mov r1, r1, lsr #8
+	mov r3, r3, lsr #8
+	bic r3, r3, #0xff00
+	bic r1, r1, #0xff00
+	eor r1, r1, r0, ror #8
+	eor r0, r3, ip, ror #8
+	ret lr
+ENDPROC(__bswapdi2)
+#endif