Filter
Top Products
ADDAD Add Using Doubleword Addressing Mode
3-50 Instruction Set SPRU733
Add Using Doubleword Addressing Mode
ADDAD
Syntax ADDAD (.unit) src2, src1, dst
.unit = . D1 or .D2
Compatibility C67x and C67x+ CPU
Opcode
31 292827 2322 1817 1312 76543210
creg z dst src2 src1 op 1 0 0 0 0 s p
3 1 5 5 5 6 1 1
Opcode map field used... For operand type... Unit Opfield
src2
src1
dst
sint
sint
sint
.D1, .D2 11 1100
src2
src1
dst
sint
ucst5
sint
.D1, .D2 11 1101
Description src1 is added to src2 using the doubleword addressing mode specified for
src2. The addition defaults to linear mode. However, if src2 is one of A4−A7
or B4−B7, the mode can be changed to circular mode by writing the appropri-
ate value to the AMR (see section 2.7.3, page 2-10). src1 is left shifted by 3
due to doubleword data sizes. The result is placed in dst.
Note:
There is no SUBAD instruction.
Execution if (cond) src2 +(src1 tt 3) → dst
else nop
Pipeline
stage
E1
Read src1, src2
Written dst
Unit in use
.D
Pipeline