#
# RISC-V translation routines for the RVXI Base Integer Instruction Set.
#
# Copyright (c) 2018 Peer Adelt, peer.adelt@hni.uni-paderborn.de
#                    Bastian Koppelmann, kbastian@mail.uni-paderborn.de
#
# This program is free software; you can redistribute it and/or modify it
# under the terms and conditions of the GNU General Public License,
# version 2 or later, as published by the Free Software Foundation.
#
# This program is distributed in the hope it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along with
# this program.  If not, see <http://www.gnu.org/licenses/>.

# Fields:
%rd        7:5
%rs1_3     7:3                !function=ex_rvc_register
%rs2_3     2:3                !function=ex_rvc_register

# Immediates:
%nzuimm_ciw    7:4 11:2 5:1 6:1   !function=ex_shift_2
%uimm_cl_d     5:2 10:3           !function=ex_shift_3
%uimm_cl_w     5:1 10:3 6:1       !function=ex_shift_2


# Argument sets:
&cl               rs1 rd
&cl_dw     uimm   rs1 rd
&ciw       nzuimm     rd
&cs               rs1 rs2
&cs_dw     uimm   rs1 rs2


# Formats 16:
@ciw       ...   ........ ... .. &ciw    nzuimm=%nzuimm_ciw           rd=%rs2_3
@cl_d      ... ... ... .. ... .. &cl_dw  uimm=%uimm_cl_d  rs1=%rs1_3  rd=%rs2_3
@cl_w      ... ... ... .. ... .. &cl_dw  uimm=%uimm_cl_w  rs1=%rs1_3  rd=%rs2_3
@cl        ... ... ... .. ... .. &cl                      rs1=%rs1_3  rd=%rs2_3
@cs        ... ... ... .. ... .. &cs                      rs1=%rs1_3  rs2=%rs2_3
@cs_d      ... ... ... .. ... .. &cs_dw  uimm=%uimm_cl_d  rs1=%rs1_3  rs2=%rs2_3
@cs_w      ... ... ... .. ... .. &cs_dw  uimm=%uimm_cl_w  rs1=%rs1_3  rs2=%rs2_3


# *** RV64C Standard Extension (Quadrant 0) ***
c_addi4spn        000    ........ ... 00 @ciw
c_fld             001  ... ... .. ... 00 @cl_d
c_lw              010  ... ... .. ... 00 @cl_w
c_flw_ld          011  --- ... -- ... 00 @cl    #Note: Must parse uimm manually
c_fsd             101  ... ... .. ... 00 @cs_d
c_sw              110  ... ... .. ... 00 @cs_w
c_fsw_sd          111  --- ... -- ... 00 @cs    #Note: Must parse uimm manually