target/hexagon/gen_op_regs.py

   1 #!/usr/bin/env python3
   2
   3 ##
   4 ##  Copyright(c) 2019-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
   5 ##
   6 ##  This program is free software; you can redistribute it and/or modify
   7 ##  it under the terms of the GNU General Public License as published by
   8 ##  the Free Software Foundation; either version 2 of the License, or
   9 ##  (at your option) any later version.
  10 ##
  11 ##  This program is distributed in the hope that it will be useful,
  12 ##  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 ##  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 ##  GNU General Public License for more details.
  15 ##
  16 ##  You should have received a copy of the GNU General Public License
  17 ##  along with this program; if not, see <http://www.gnu.org/licenses/>.
  18 ##
  19
  20 import sys
  21 import re
  22 import string
  23 import hex_common
  24
  25
  26 ##
  27 ##     Generate the register and immediate operands for each instruction
  28 ##
  29 def calculate_regid_reg(tag):
  30     def letter_inc(x):
  31         return chr(ord(x) + 1)
  32
  33     ordered_implregs = ["SP", "FP", "LR"]
  34     srcdst_lett = "X"
  35     src_lett = "S"
  36     dst_lett = "D"
  37     retstr = ""
  38     mapdict = {}
  39     for reg in ordered_implregs:
  40         reg_rd = 0
  41         reg_wr = 0
  42         if ("A_IMPLICIT_WRITES_" + reg) in hex_common.attribdict[tag]:
  43             reg_wr = 1
  44         if reg_rd and reg_wr:
  45             retstr += srcdst_lett
  46             mapdict[srcdst_lett] = reg
  47             srcdst_lett = letter_inc(srcdst_lett)
  48         elif reg_rd:
  49             retstr += src_lett
  50             mapdict[src_lett] = reg
  51             src_lett = letter_inc(src_lett)
  52         elif reg_wr:
  53             retstr += dst_lett
  54             mapdict[dst_lett] = reg
  55             dst_lett = letter_inc(dst_lett)
  56     return retstr, mapdict
  57
  58
  59 def calculate_regid_letters(tag):
  60     retstr, mapdict = calculate_regid_reg(tag)
  61     return retstr
  62
  63
  64 def strip_reg_prefix(x):
  65     y = x.replace("UREG.", "")
  66     y = y.replace("MREG.", "")
  67     return y.replace("GREG.", "")
  68
  69
  70 def main():
  71     hex_common.read_semantics_file(sys.argv[1])
  72     hex_common.read_attribs_file(sys.argv[2])
  73     tagregs = hex_common.get_tagregs(full=True)
  74     tagimms = hex_common.get_tagimms()
  75
  76     with open(sys.argv[3], "w") as f:
  77         for tag in hex_common.tags:
  78             regs = tagregs[tag]
  79             rregs = []
  80             wregs = []
  81             regids = ""
  82             for regtype, regid, _, numregs in regs:
  83                 if hex_common.is_read(regid):
  84                     if regid[0] not in regids:
  85                         regids += regid[0]
  86                     rregs.append(regtype + regid + numregs)
  87                 if hex_common.is_written(regid):
  88                     wregs.append(regtype + regid + numregs)
  89                     if regid[0] not in regids:
  90                         regids += regid[0]
  91             for attrib in hex_common.attribdict[tag]:
  92                 if hex_common.attribinfo[attrib]["rreg"]:
  93                     rregs.append(strip_reg_prefix(attribinfo[attrib]["rreg"]))
  94                 if hex_common.attribinfo[attrib]["wreg"]:
  95                     wregs.append(strip_reg_prefix(attribinfo[attrib]["wreg"]))
  96             regids += calculate_regid_letters(tag)
  97             f.write(
  98                 f'REGINFO({tag},"{regids}",\t/*RD:*/\t"{",".join(rregs)}",'
  99                 f'\t/*WR:*/\t"{",".join(wregs)}")\n'
 100             )
 101
 102         for tag in hex_common.tags:
 103             imms = tagimms[tag]
 104             f.write(f"IMMINFO({tag}")
 105             if not imms:
 106                 f.write(""",'u',0,0,'U',0,0""")
 107             for sign, size, shamt in imms:
 108                 if sign == "r":
 109                     sign = "s"
 110                 if not shamt:
 111                     shamt = "0"
 112                 f.write(f""",'{sign}',{size},{shamt}""")
 113             if len(imms) == 1:
 114                 if sign.isupper():
 115                     myu = "u"
 116                 else:
 117                     myu = "U"
 118                 f.write(f""",'{myu}',0,0""")
 119             f.write(")\n")
 120
 121
 122 if __name__ == "__main__":
 123     main()