Adding Zilsd extension

arg_lut.csv

@@ -98,3 +98,9 @@
 "c_rs2", 6, 2
 "c_sreg1", 9, 7
 "c_sreg2", 4, 2
+"rd_p_e", 4, 3
+"rs2_p_e", 4, 3
+"rd_n0_e", 11, 8
+"c_rs2_e", 6, 3
+"rd_e", 11, 8
+"rs2_e", 24, 21

constants.py

@@ -116,6 +116,13 @@
 latex_mapping['c_uimm10sp_s'] = 'uimm[5:4$\\vert$9:6]'
 latex_mapping['c_uimm9sp_s'] = 'uimm[5:3$\\vert$8:6]'
 
+latex_mapping['rd_p_e'] = "rd\\,$'$, even values only"
+latex_mapping['rs2_p_e'] = "rs2\\,$'$, even values only"
+latex_mapping['rd_n0_e'] = 'rd$\\neq$0, even values only'
+latex_mapping['c_rs2_e'] = 'rs2, even values only'
+latex_mapping['rd_e'] = 'rd, even values only'
+latex_mapping['rs2_e'] = 'rs2, even values only'
+
 # created a dummy instruction-dictionary like dictionary for all the instruction
 # types so that the same logic can be used to create their tables
 latex_inst_type = {}

unratified/rv32_zcmlsd

@@ -0,0 +1,10 @@
+# Compressed load/store pair for RV32
+
+# quadrant 0
+$pseudo_op rv32_c_f::c.flw c.ld rd_p_e rs1_p c_uimm8lo c_uimm8hi     2..0=0 15..13=3
+$pseudo_op rv32_c_f::c.fsw c.sd rs1_p rs2_p_e c_uimm8hi c_uimm8lo    2..0=0 15..13=7
+
+#quadrant 2
+$pseudo_op rv32_c_f::c.flwsp c.ldsp rd_n0_e c_uimm9sphi c_uimm9splo  1..0=2 15..13=3 7=0
+$pseudo_op rv32_c_f::c.fswsp c.sdsp c_rs2_e c_uimm9sp_s              2..0=2 15..13=7
+

unratified/rv32_zilsd

@@ -0,0 +1,4 @@
+# Load/store pair for RV32
+
+ld   rd_e rs1 imm12            14..12=3 7..2=0x00 1..0=3
+sd   imm12hi rs1 rs2_e imm12lo 20=0 14..12=3 6..2=0x08 1..0=3