UM_S3C2501X Datasheet, PDF (118/465 Pages) Samsung semiconductor – 32-BIT RISC MICROPROCESSOR

S3C2501X
INSTRUCTION SET
3.8.4 ASSEMBLER SYNTAX
Table 3-5. Assembler Syntax Descriptions
Mnemonic
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
Description
Unsigned multiply long
Unsigned multiply & Accumulate long
Signed multiply long
Signed multiply & Accumulate long
Purpose
32 x 32 = 64
32 x 32 + 64 = 64
32 x 32 = 64
32 x 32 + 64 = 64
where:
{cond}
{S}
RdLo, RdHi, Rm, Rs
Two-character condition mnemonic. See Table 3-2.
Set condition codes if S present
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