43
Table 2.3
Instructions Classified by Function (cont)
Type
Instruction
Size
*
Function
Arithmetic
operations
ADD
SUB
B/W/L
Rd
±
Rs
→
Rd, Rd
±
#IMM
→
Rd
Performs addition or subtraction on data in two general
registers, or on immediate data and data in a general
register. (Immediate byte data cannot be subtracted from
byte data in a general register. Use the SUBX or ADD
instruction.)
ADDX
SUBX
B
Rd
±
Rs
±
C
→
Rd, Rd
±
#IMM
±
C
→
Rd
Performs addition or subtraction with carry or borrow on
byte data in two general registers, or on immediate data
and data in a general register.
INC
DEC
B/W/L
Rd
±
1
→
Rd, Rd
±
2
→
Rd
Increments or decrements a general register by 1 or 2.
(Byte operands can be incremented or decremented by
1 only.)
ADDS
SUBS
L
Rd
±
1
→
Rd, Rd
±
2
→
Rd, Rd
±
4
→
Rd
Adds or subtracts the value 1, 2, or 4 to or from data in a
32-bit register.
DAA
DAS
B
Rd decimal adjust
→
Rd
Decimal-adjusts an addition or subtraction result in a
general register by referring to the CCR to produce 4-bit
BCD data.
MULXU
B/W
Rd
×
Rs
→
Rd
Performs unsigned multiplication on data in two general
registers: either 8 bits
×
8 bits
→
16 bits or 16 bits
×
16 bits
→
32 bits.
Rd
×
Rs
→
Rd
Performs signed multiplication on data in two general
registers: either 8 bits
×
8 bits
→
16 bits or 16 bits
×
16 bits
→
32 bits.
Rd
÷
Rs
→
Rd
Performs unsigned division on data in two general
registers: either 16 bits
÷
8 bits
→
8-bit quotient and 8-bit
remainder or 32 bits
÷
16 bits
→
16-bit quotient and 16-
bit remainder.
MULXS
B/W
DIVXU
B/W
Note:
*
Size refers to the operand size.
B:
Byte
W:
Word
L:
Longword