| #!/usr/bin/env python3 |
| |
| ## |
| ## Copyright(c) 2019-2021 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 |
| |
| ## |
| ## Helpers for gen_helper_function |
| ## |
| def gen_decl_ea(f): |
| f.write(" uint32_t EA;\n") |
| |
| def gen_helper_return_type(f,regtype,regid,regno): |
| if regno > 1 : f.write(", ") |
| f.write("int32_t") |
| |
| def gen_helper_return_type_pair(f,regtype,regid,regno): |
| if regno > 1 : f.write(", ") |
| f.write("int64_t") |
| |
| def gen_helper_arg(f,regtype,regid,regno): |
| if regno > 0 : f.write(", " ) |
| f.write("int32_t %s%sV" % (regtype,regid)) |
| |
| def gen_helper_arg_new(f,regtype,regid,regno): |
| if regno >= 0 : f.write(", " ) |
| f.write("int32_t %s%sN" % (regtype,regid)) |
| |
| def gen_helper_arg_pair(f,regtype,regid,regno): |
| if regno >= 0 : f.write(", ") |
| f.write("int64_t %s%sV" % (regtype,regid)) |
| |
| def gen_helper_arg_opn(f,regtype,regid,i,tag): |
| if (hex_common.is_pair(regid)): |
| gen_helper_arg_pair(f,regtype,regid,i) |
| elif (hex_common.is_single(regid)): |
| if hex_common.is_old_val(regtype, regid, tag): |
| gen_helper_arg(f,regtype,regid,i) |
| elif hex_common.is_new_val(regtype, regid, tag): |
| gen_helper_arg_new(f,regtype,regid,i) |
| else: |
| print("Bad register parse: ",regtype,regid,toss,numregs) |
| else: |
| print("Bad register parse: ",regtype,regid,toss,numregs) |
| |
| def gen_helper_arg_imm(f,immlett): |
| f.write(", int32_t %s" % (hex_common.imm_name(immlett))) |
| |
| def gen_helper_dest_decl(f,regtype,regid,regno,subfield=""): |
| f.write(" int32_t %s%sV%s = 0;\n" % \ |
| (regtype,regid,subfield)) |
| |
| def gen_helper_dest_decl_pair(f,regtype,regid,regno,subfield=""): |
| f.write(" int64_t %s%sV%s = 0;\n" % \ |
| (regtype,regid,subfield)) |
| |
| def gen_helper_dest_decl_opn(f,regtype,regid,i): |
| if (hex_common.is_pair(regid)): |
| gen_helper_dest_decl_pair(f,regtype,regid,i) |
| elif (hex_common.is_single(regid)): |
| gen_helper_dest_decl(f,regtype,regid,i) |
| else: |
| print("Bad register parse: ",regtype,regid,toss,numregs) |
| |
| def gen_helper_return(f,regtype,regid,regno): |
| f.write(" return %s%sV;\n" % (regtype,regid)) |
| |
| def gen_helper_return_pair(f,regtype,regid,regno): |
| f.write(" return %s%sV;\n" % (regtype,regid)) |
| |
| def gen_helper_return_opn(f, regtype, regid, i): |
| if (hex_common.is_pair(regid)): |
| gen_helper_return_pair(f,regtype,regid,i) |
| elif (hex_common.is_single(regid)): |
| gen_helper_return(f,regtype,regid,i) |
| else: |
| print("Bad register parse: ",regtype,regid,toss,numregs) |
| |
| ## |
| ## Generate the TCG code to call the helper |
| ## For A2_add: Rd32=add(Rs32,Rt32), { RdV=RsV+RtV;} |
| ## We produce: |
| ## int32_t HELPER(A2_add)(CPUHexagonState *env, int32_t RsV, int32_t RtV) |
| ## { |
| ## uint32_t slot __attribute__(unused)) = 4; |
| ## int32_t RdV = 0; |
| ## { RdV=RsV+RtV;} |
| ## COUNT_HELPER(A2_add); |
| ## return RdV; |
| ## } |
| ## |
| def gen_helper_function(f, tag, tagregs, tagimms): |
| regs = tagregs[tag] |
| imms = tagimms[tag] |
| |
| numresults = 0 |
| numscalarresults = 0 |
| numscalarreadwrite = 0 |
| for regtype,regid,toss,numregs in regs: |
| if (hex_common.is_written(regid)): |
| numresults += 1 |
| if (hex_common.is_scalar_reg(regtype)): |
| numscalarresults += 1 |
| if (hex_common.is_readwrite(regid)): |
| if (hex_common.is_scalar_reg(regtype)): |
| numscalarreadwrite += 1 |
| |
| if (numscalarresults > 1): |
| ## The helper is bogus when there is more than one result |
| f.write("void HELPER(%s)(CPUHexagonState *env) { BOGUS_HELPER(%s); }\n" |
| % (tag, tag)) |
| else: |
| ## The return type of the function is the type of the destination |
| ## register |
| i=0 |
| for regtype,regid,toss,numregs in regs: |
| if (hex_common.is_written(regid)): |
| if (hex_common.is_pair(regid)): |
| gen_helper_return_type_pair(f,regtype,regid,i) |
| elif (hex_common.is_single(regid)): |
| gen_helper_return_type(f,regtype,regid,i) |
| else: |
| print("Bad register parse: ",regtype,regid,toss,numregs) |
| i += 1 |
| |
| if (numscalarresults == 0): |
| f.write("void") |
| f.write(" HELPER(%s)(CPUHexagonState *env" % tag) |
| |
| i = 1 |
| |
| ## Arguments to the helper function are the source regs and immediates |
| for regtype,regid,toss,numregs in regs: |
| if (hex_common.is_read(regid)): |
| gen_helper_arg_opn(f,regtype,regid,i,tag) |
| i += 1 |
| for immlett,bits,immshift in imms: |
| gen_helper_arg_imm(f,immlett) |
| i += 1 |
| if hex_common.need_slot(tag): |
| if i > 0: f.write(", ") |
| f.write("uint32_t slot") |
| i += 1 |
| if hex_common.need_part1(tag): |
| if i > 0: f.write(", ") |
| f.write("uint32_t part1") |
| f.write(")\n{\n") |
| if (not hex_common.need_slot(tag)): |
| f.write(" uint32_t slot __attribute__((unused)) = 4;\n" ) |
| if hex_common.need_ea(tag): gen_decl_ea(f) |
| ## Declare the return variable |
| i=0 |
| for regtype,regid,toss,numregs in regs: |
| if (hex_common.is_writeonly(regid)): |
| gen_helper_dest_decl_opn(f,regtype,regid,i) |
| i += 1 |
| |
| if 'A_FPOP' in hex_common.attribdict[tag]: |
| f.write(' arch_fpop_start(env);\n'); |
| |
| f.write(" %s\n" % hex_common.semdict[tag]) |
| |
| if 'A_FPOP' in hex_common.attribdict[tag]: |
| f.write(' arch_fpop_end(env);\n'); |
| |
| ## Save/return the return variable |
| for regtype,regid,toss,numregs in regs: |
| if (hex_common.is_written(regid)): |
| gen_helper_return_opn(f, regtype, regid, i) |
| f.write("}\n\n") |
| ## End of the helper definition |
| |
| 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.calculate_attribs() |
| tagregs = hex_common.get_tagregs() |
| tagimms = hex_common.get_tagimms() |
| |
| with open(sys.argv[4], 'w') as f: |
| for tag in hex_common.tags: |
| ## Skip the priv instructions |
| if ( "A_PRIV" in hex_common.attribdict[tag] ) : |
| continue |
| ## Skip the guest instructions |
| if ( "A_GUEST" in hex_common.attribdict[tag] ) : |
| continue |
| ## Skip the diag instructions |
| if ( tag == "Y6_diag" ) : |
| continue |
| if ( tag == "Y6_diag0" ) : |
| continue |
| if ( tag == "Y6_diag1" ) : |
| continue |
| if ( hex_common.skip_qemu_helper(tag) ): |
| continue |
| |
| gen_helper_function(f, tag, tagregs, tagimms) |
| |
| if __name__ == "__main__": |
| main() |
