diff options
Diffstat (limited to 'riscv/insns/vext_x_v.h')
| -rw-r--r-- | riscv/insns/vext_x_v.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/riscv/insns/vext_x_v.h b/riscv/insns/vext_x_v.h new file mode 100644 index 0000000..837cc22 --- /dev/null +++ b/riscv/insns/vext_x_v.h @@ -0,0 +1,30 @@ +// vext_x_v: rd = vs2[rs1] +require(insn.v_vm() == 1); +uint64_t xmask = UINT64_MAX >> (64 - P.get_max_xlen()); +reg_t rs1 = RS1; +VI_LOOP_BASE +VI_LOOP_END_NO_TAIL_ZERO +if (!(rs1 >= 0 && rs1 < (P.VU.get_vlen()/sew))) { + WRITE_RD(0); +} else { + switch(sew) { + case e8: + WRITE_RD(P.VU.elt<uint8_t>(rs2_num, rs1)); + break; + case e16: + WRITE_RD(P.VU.elt<uint16_t>(rs2_num, rs1)); + break; + case e32: + if (P.get_max_xlen() == 32) + WRITE_RD(P.VU.elt<int32_t>(rs2_num, rs1)); + else + WRITE_RD(P.VU.elt<uint32_t>(rs2_num, rs1)); + break; + case e64: + if (P.get_max_xlen() <= sew) + WRITE_RD(P.VU.elt<uint64_t>(rs2_num, rs1) & xmask); + else + WRITE_RD(P.VU.elt<uint64_t>(rs2_num, rs1)); + break; + } +} |