131 lines
4.7 KiB
Python
131 lines
4.7 KiB
Python
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#!/usr/bin/env python3
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##
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## Copyright(c) 2019-2022 rev.ng Labs Srl. All Rights Reserved.
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##
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## This program is free software; you can redistribute it and/or modify
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## it under the terms of the GNU General Public License as published by
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## the Free Software Foundation; either version 2 of the License, or
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## (at your option) any later version.
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##
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## This program is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU General Public License for more details.
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##
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## You should have received a copy of the GNU General Public License
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## along with this program; if not, see <http://www.gnu.org/licenses/>.
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##
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import sys
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import re
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import string
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from io import StringIO
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import hex_common
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##
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## Generate code to be fed to the idef_parser
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##
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## Consider A2_add:
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##
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## Rd32=add(Rs32,Rt32), { RdV=RsV+RtV;}
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##
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## We produce:
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##
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## A2_add(RdV, in RsV, in RtV) {
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## { RdV=RsV+RtV;}
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## }
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##
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## A2_add represents the instruction tag. Then we have a list of TCGv
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## that the code generated by the parser can expect in input. Some of
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## them are inputs ("in" prefix), while some others are outputs.
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##
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def main():
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hex_common.read_semantics_file(sys.argv[1])
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hex_common.read_attribs_file(sys.argv[2])
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hex_common.calculate_attribs()
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tagregs = hex_common.get_tagregs()
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tagimms = hex_common.get_tagimms()
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with open(sys.argv[3], 'w') as f:
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f.write('#include "macros.inc"\n\n')
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for tag in hex_common.tags:
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## Skip the priv instructions
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if ( "A_PRIV" in hex_common.attribdict[tag] ) :
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continue
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## Skip the guest instructions
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if ( "A_GUEST" in hex_common.attribdict[tag] ) :
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continue
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## Skip instructions that saturate in a ternary expression
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if ( tag in {'S2_asr_r_r_sat', 'S2_asl_r_r_sat'} ) :
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continue
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## Skip instructions using switch
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if ( tag in {'S4_vrcrotate_acc', 'S4_vrcrotate'} ) :
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continue
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## Skip trap instructions
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if ( tag in {'J2_trap0', 'J2_trap1'} ) :
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continue
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## Skip 128-bit instructions
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if ( tag in {'A7_croundd_ri', 'A7_croundd_rr'} ) :
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continue
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if ( tag in {'M7_wcmpyrw', 'M7_wcmpyrwc',
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'M7_wcmpyiw', 'M7_wcmpyiwc',
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'M7_wcmpyrw_rnd', 'M7_wcmpyrwc_rnd',
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'M7_wcmpyiw_rnd', 'M7_wcmpyiwc_rnd'} ) :
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continue
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## Skip interleave/deinterleave instructions
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if ( tag in {'S2_interleave', 'S2_deinterleave'} ) :
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continue
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## Skip instructions using bit reverse
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if ( tag in {'S2_brev', 'S2_brevp', 'S2_ct0', 'S2_ct1',
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'S2_ct0p', 'S2_ct1p', 'A4_tlbmatch'} ) :
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continue
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## Skip other unsupported instructions
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if ( tag == 'S2_cabacdecbin' or tag == 'A5_ACS' ) :
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continue
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if ( tag.startswith('Y') ) :
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continue
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if ( tag.startswith('V6_') ) :
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continue
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if ( tag.startswith('F') ) :
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continue
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if ( tag.endswith('_locked') ) :
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continue
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if ( "A_COF" in hex_common.attribdict[tag] ) :
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continue
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regs = tagregs[tag]
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imms = tagimms[tag]
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arguments = []
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for regtype,regid,toss,numregs in regs:
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prefix = "in " if hex_common.is_read(regid) else ""
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is_pair = hex_common.is_pair(regid)
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is_single_old = (hex_common.is_single(regid)
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and hex_common.is_old_val(regtype, regid, tag))
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is_single_new = (hex_common.is_single(regid)
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and hex_common.is_new_val(regtype, regid, tag))
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if is_pair or is_single_old:
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arguments.append("%s%s%sV" % (prefix, regtype, regid))
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elif is_single_new:
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arguments.append("%s%s%sN" % (prefix, regtype, regid))
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else:
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print("Bad register parse: ",regtype,regid,toss,numregs)
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for immlett,bits,immshift in imms:
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arguments.append(hex_common.imm_name(immlett))
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f.write("%s(%s) {\n" % (tag, ", ".join(arguments)))
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f.write(" ");
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if hex_common.need_ea(tag):
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f.write("size4u_t EA; ");
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f.write("%s\n" % hex_common.semdict[tag])
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f.write("}\n\n")
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if __name__ == "__main__":
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main()
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