diff options
Diffstat (limited to 'arch/blackfin/lib/smulsi3_highpart.S')
| -rw-r--r-- | arch/blackfin/lib/smulsi3_highpart.S | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/blackfin/lib/smulsi3_highpart.S b/arch/blackfin/lib/smulsi3_highpart.S new file mode 100644 index 000000000..e50d6c4ac --- /dev/null +++ b/arch/blackfin/lib/smulsi3_highpart.S @@ -0,0 +1,38 @@ +/* + * 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 |