|
SPECIAL 000000 |
0 00000 |
rt |
rd |
sa |
DSRA32 111111 |
|
6 |
5 |
5 |
5 |
5 |
6 |
DSRA32 rd, rt, sa |
MIPS64 |
Doubleword Shift Right Arithmetic Plus 32 |
Doubleword Shift Right Arithmetic Plus 32
To execute an arithmetic right-shift of a doubleword by a fixed amount-32 to 63 bits
GPR[rd] = GPR[rt] >> (sa+32) (arithmetic)
The doubleword contents of GPR rt are shifted right, duplicating the sign bit (63) into the emptied bits; the result is placed in GPR rd. The bit-shift amount in the range 32 to 63 is specified by sa+32.
s = 1 || sa /* 32+sa */ GPR[rd] = (GPR[rt]63)s || GPR[rt]63..s
Reserved Instruction