Samsung S3C2440A User Manual
Page 84
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S3C2440A RISC MICROPROCESSOR
ARM INSTRUCTION SET
3-27
ASSEMBLER SYNTAX
Table 3-5. Assembler Syntax Descriptions
Mnemonic Description
Purpose
UMULL{cond}{S} RdLo,RdHi,Rm,Rs
Unsigned Multiply Long
32 x 32 = 64
UMLAL{cond}{S} RdLo,RdHi,Rm,Rs
Unsigned Multiply & Accumulate Long
32 x 32 + 64 = 64
SMULL{cond}{S} RdLo,RdHi,Rm,Rs
Signed Multiply Long
32 x 32 = 64
SMLAL{cond}{S} RdLo,RdHi,Rm,Rs
Signed Multiply & Accumulate Long
32 x 32 + 64 = 64
where:
{cond}
Two-character condition mnemonic. See Table 3-2.
{S}
Set condition codes if S present
RdLo, RdHi, Rm, Rs
Expressions evaluating to a register number other than R15.
EXAMPLES
UMULL R1,R4,R2,R3
;
R4,R1:=R2*R3
UMLALS
R1,R5,R2,R3
; R5,R1:=R2*R3+R5,R1 also setting condition codes
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