1 /* SPDX-License-Identifier: GPL-2.0 */
2 #include <linux/linkage.h>
3 #include <asm/assembler.h>
4
5 #if __LINUX_ARM_ARCH__ >= 6
6 ENTRY(__bswapsi2)
7 rev r0, r0
8 bx lr
9 ENDPROC(__bswapsi2)
10
11 ENTRY(__bswapdi2)
12 rev r3, r0
13 rev r0, r1
14 mov r1, r3
15 bx lr
16 ENDPROC(__bswapdi2)
17 #else
18 ENTRY(__bswapsi2)
19 eor r3, r0, r0, ror #16
20 mov r3, r3, lsr #8
21 bic r3, r3, #0xff00
22 eor r0, r3, r0, ror #8
23 ret lr
24 ENDPROC(__bswapsi2)
25
26 ENTRY(__bswapdi2)
27 mov ip, r1
28 eor r3, ip, ip, ror #16
29 eor r1, r0, r0, ror #16
30 mov r1, r1, lsr #8
31 mov r3, r3, lsr #8
32 bic r3, r3, #0xff00
33 bic r1, r1, #0xff00
34 eor r1, r1, r0, ror #8
35 eor r0, r3, ip, ror #8
36 ret lr
37 ENDPROC(__bswapdi2)
38 #endif
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