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 39