| %def shiftWide(opcode="shl"): | |
| /* | |
| * 64-bit shift operation. | |
| * | |
| * For: shl-long, shr-long, ushr-long | |
| */ | |
| /* binop vAA, vBB, vCC */ | |
| FETCH w0, 1 // w0<- CCBB | |
| lsr w3, wINST, #8 // w3<- AA | |
| lsr w2, w0, #8 // w2<- CC | |
| GET_VREG w2, w2 // w2<- vCC (shift count) | |
| and w1, w0, #255 // w1<- BB | |
| GET_VREG_WIDE x1, w1 // x1<- vBB | |
| FETCH_ADVANCE_INST 2 // advance rPC, load rINST | |
| $opcode x0, x1, x2 // Do the shift. Only low 6 bits of x2 are used. | |
| GET_INST_OPCODE ip // extract opcode from rINST | |
| SET_VREG_WIDE x0, w3 // vAA<- x0 | |
| GOTO_OPCODE ip // jump to next instruction | |
| /* 11-14 instructions */ |