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#!/usr/bin/env python3
##
## Copyright(c) 2022-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 2 of the License, or
## (at your option) any later version.
##
## This program is distributed in the hope that 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/>.
##
import sys
import re
import string
import hex_common
##
## Generate the code to analyze the instruction
## For A2_add: Rd32=add(Rs32,Rt32), { RdV=RsV+RtV;}
## We produce:
## static void analyze_A2_add(DisasContext *ctx)
## {
## Insn *insn G_GNUC_UNUSED = ctx->insn;
## const int RdN = insn->regno[0];
## ctx_log_reg_write(ctx, RdN, false);
## const int RsN = insn->regno[1];
## ctx_log_reg_read(ctx, RsN);
## const int RtN = insn->regno[2];
## ctx_log_reg_read(ctx, RtN);
## }
##
def gen_analyze_func(f, tag, regs, imms):
f.write(f"static void analyze_{tag}(DisasContext *ctx)\n")
f.write("{\n")
f.write(" Insn *insn G_GNUC_UNUSED = ctx->insn;\n")
i = 0
## Analyze all the registers
for regtype, regid in regs:
reg = hex_common.get_register(tag, regtype, regid)
if reg.is_written():
reg.analyze_write(f, tag, i)
else:
reg.analyze_read(f, i)
i += 1
has_generated_helper = not hex_common.skip_qemu_helper(
tag
) and not hex_common.is_idef_parser_enabled(tag)
## Mark HVX instructions with generated helpers
if (has_generated_helper and
"A_CVI" in hex_common.attribdict[tag]):
f.write(" ctx->has_hvx_helper = true;\n")
f.write("}\n\n")
def main():
hex_common.read_semantics_file(sys.argv[1])
hex_common.read_attribs_file(sys.argv[2])
hex_common.read_overrides_file(sys.argv[3])
hex_common.read_overrides_file(sys.argv[4])
## Whether or not idef-parser is enabled is
## determined by the number of arguments to
## this script:
##
## 5 args. -> not enabled,
## 6 args. -> idef-parser enabled.
##
## The 6:th arg. then holds a list of the successfully
## parsed instructions.
is_idef_parser_enabled = len(sys.argv) > 6
if is_idef_parser_enabled:
hex_common.read_idef_parser_enabled_file(sys.argv[5])
hex_common.calculate_attribs()
hex_common.init_registers()
tagregs = hex_common.get_tagregs()
tagimms = hex_common.get_tagimms()
with open(sys.argv[-1], "w") as f:
f.write("#ifndef HEXAGON_TCG_FUNCS_H\n")
f.write("#define HEXAGON_TCG_FUNCS_H\n\n")
for tag in hex_common.tags:
gen_analyze_func(f, tag, tagregs[tag], tagimms[tag])
f.write("#endif /* HEXAGON_TCG_FUNCS_H */\n")
if __name__ == "__main__":
main()
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