target/hexagon/gen_analyze_funcs.py

   1 #!/usr/bin/env python3
   2
   3 ##
   4 ##  Copyright(c) 2022-2024 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 code to analyze the instruction
  28 ##     For A2_add: Rd32=add(Rs32,Rt32), { RdV=RsV+RtV;}
  29 ##     We produce:
  30 ##     static void analyze_A2_add(DisasContext *ctx)
  31 ##     {
  32 ##         Insn *insn G_GNUC_UNUSED = ctx->insn;
  33 ##         const int RdN = insn->regno[0];
  34 ##         ctx_log_reg_write(ctx, RdN, false);
  35 ##         const int RsN = insn->regno[1];
  36 ##         ctx_log_reg_read(ctx, RsN);
  37 ##         const int RtN = insn->regno[2];
  38 ##         ctx_log_reg_read(ctx, RtN);
  39 ##     }
  40 ##
  41 def gen_analyze_func(f, tag, regs, imms):
  42     f.write(f"static void analyze_{tag}(DisasContext *ctx)\n")
  43     f.write("{\n")
  44
  45     f.write("    Insn *insn G_GNUC_UNUSED = ctx->insn;\n")
  46     if (hex_common.is_hvx_insn(tag)):
  47         if hex_common.has_hvx_helper(tag):
  48             f.write(
  49                 "    const bool G_GNUC_UNUSED insn_has_hvx_helper = true;\n"
  50             )
  51             f.write("    ctx_start_hvx_insn(ctx);\n")
  52         else:
  53             f.write(
  54                 "    const bool G_GNUC_UNUSED insn_has_hvx_helper = false;\n"
  55             )
  56
  57     ## Declare all the registers
  58     for regno, register in enumerate(regs):
  59         reg_type, reg_id = register
  60         reg = hex_common.get_register(tag, reg_type, reg_id)
  61         reg.decl_reg_num(f, regno)
  62
  63     ## Analyze the register reads
  64     for regno, register in enumerate(regs):
  65         reg_type, reg_id = register
  66         reg = hex_common.get_register(tag, reg_type, reg_id)
  67         if reg.is_read():
  68             reg.analyze_read(f, regno)
  69
  70     ## Analyze the register writes
  71     for regno, register in enumerate(regs):
  72         reg_type, reg_id = register
  73         reg = hex_common.get_register(tag, reg_type, reg_id)
  74         if reg.is_written():
  75             reg.analyze_write(f, tag, regno)
  76
  77     f.write("}\n\n")
  78
  79
  80 def main():
  81     hex_common.read_common_files()
  82     tagregs = hex_common.get_tagregs()
  83     tagimms = hex_common.get_tagimms()
  84
  85     with open(sys.argv[-1], "w") as f:
  86         f.write("#ifndef HEXAGON_ANALYZE_FUNCS_C_INC\n")
  87         f.write("#define HEXAGON_ANALYZE_FUNCS_C_INC\n\n")
  88
  89         for tag in hex_common.tags:
  90             gen_analyze_func(f, tag, tagregs[tag], tagimms[tag])
  91
  92         f.write("#endif    /* HEXAGON_ANALYZE_FUNCS_C_INC */\n")
  93
  94
  95 if __name__ == "__main__":
  96     main()