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Add Two Unsigned Integers Without Saturation ADDU
3-63 Instruction SetSPRU733
Add Two Unsigned Integers Without Saturation
ADDU
Syntax ADDU (.unit) src1, src2, dst
.unit = .L1 or .L2
Compatibility C62x, C64x, C67x, and C67x+ CPU
Opcode
31 29 28 27 23 22 18 17 13 12 11 5 4 3 2 1 0
creg z dst src2 src1 x op 1 1 0 s p
3 1 5 5 5 1 7 1 1
Opcode map field used... For operand type... Unit Opfield
src1
src2
dst
uint
xuint
ulong
.L1, .L2 010 1011
src1
src2
dst
xuint
ulong
ulong
.L1, .L2 010 1001
Description src2 is added to src1. The result is placed in dst.
Execution if (cond)
src1 + src2
→ dst
else nop
Pipeline
Stage
E1
Read src1, src2
Written dst
Unit in use
.L
Instruction Type Single-cycle
Delay Slots 0
See Also ADD, SADD, SUBU
Pipeline