linux/arch/blackfin/lib/smulsi3_highpart.S

39 lines
603 B
ArmAsm

/*
* Copyright 2007 Analog Devices Inc.
*
* Licensed under the Clear BSD license or the GPL-2 (or later)
*/
.align 2
.global ___smulsi3_highpart;
.type ___smulsi3_highpart, STT_FUNC;
#ifdef CONFIG_ARITHMETIC_OPS_L1
.section .l1.text
#else
.text
#endif
___smulsi3_highpart:
R2 = R1.L * R0.L (FU);
R3 = R1.H * R0.L (IS,M);
R0 = R0.H * R1.H, R1 = R0.H * R1.L (IS,M);
R1.L = R2.H + R1.L;
cc = ac0;
R2 = cc;
R1.L = R1.L + R3.L;
cc = ac0;
R1 >>>= 16;
R3 >>>= 16;
R1 = R1 + R3;
R1 = R1 + R2;
R2 = cc;
R1 = R1 + R2;
R0 = R0 + R1;
RTS;
.size ___smulsi3_highpart, .-___smulsi3_highpart