H_READ
rc = plpar_hcall(H_READ, retbuf, flags, ptex);
rc = plpar_hcall_raw(H_READ, retbuf, flags, ptex);
rc = plpar_hcall9(H_READ, retbuf, flags | H_READ_4, ptex);
rc = plpar_hcall9_raw(H_READ, retbuf, flags | H_READ_4, ptex);
case H_READ:
H_READ,
{H_READ, "H_READ"}, \