S3C4510B
INSTRUCTION SET
ASSEMBLER SYNTAX
Table 3-5. Assembler Syntax Descriptions
Description
Mnemonic
Purpose
UMULL{cond}{S} RdLo, RdHi, Rm, Rs
UMLAL{cond}{S} RdLo, RdHi, Rm, Rs
SMULL{cond}{S} RdLo, RdHi, Rm, Rs
SMLAL{cond}{S} RdLo, RdHi, Rm, Rs
Unsigned multiply long
32 x 32 = 64
Unsigned multiply & Accumulate long
Signed multiply long
32 x 32 + 64 = 64
32 x 32 = 64
Signed multiply & Accumulate long
32 x 32 + 64 = 64
where:
{cond}
Two-character condition mnemonic. See Table 3-2.
Set condition codes if S present
{S}
RdLo, RdHi, Rm, Rs
Expressions evaluating to a register number other than R15.
Examples
UMULL
UMLALS
R1, R4, R2, R3
R1, R5, R2, R3
; R4, R1: = R2 * R3
; R5, R1: = R2 * R3 + R5, R1 also setting condition codes
3-27