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Diffstat (limited to 'target/hexagon/gen_tcg_funcs.py')
| -rwxr-xr-x | target/hexagon/gen_tcg_funcs.py | 485 |
1 files changed, 485 insertions, 0 deletions
diff --git a/target/hexagon/gen_tcg_funcs.py b/target/hexagon/gen_tcg_funcs.py new file mode 100755 index 0000000000..fe4d8e5730 --- /dev/null +++ b/target/hexagon/gen_tcg_funcs.py @@ -0,0 +1,485 @@ +#!/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_tcg_func +## +def gen_decl_ea_tcg(f, tag): + if ('A_CONDEXEC' in hex_common.attribdict[tag] or + 'A_LOAD' in hex_common.attribdict[tag]): + f.write(" TCGv EA = tcg_temp_local_new();\n") + else: + f.write(" TCGv EA = tcg_temp_new();\n") + +def gen_free_ea_tcg(f): + f.write(" tcg_temp_free(EA);\n") + +def genptr_decl_pair_writeble(f, tag, regtype, regid, regno): + regN="%s%sN" % (regtype,regid) + f.write(" TCGv_i64 %s%sV = tcg_temp_local_new_i64();\n" % \ + (regtype, regid)) + if (regtype == "C"): + f.write(" const int %s = insn->regno[%d] + HEX_REG_SA0;\n" % \ + (regN, regno)) + else: + f.write(" const int %s = insn->regno[%d];\n" % (regN, regno)) + if ('A_CONDEXEC' in hex_common.attribdict[tag]): + f.write(" if (!is_preloaded(ctx, %s)) {\n" % regN) + f.write(" tcg_gen_mov_tl(hex_new_value[%s], hex_gpr[%s]);\n" % \ + (regN, regN)) + f.write(" }\n") + f.write(" if (!is_preloaded(ctx, %s + 1)) {\n" % regN) + f.write(" tcg_gen_mov_tl(hex_new_value[%s + 1], hex_gpr[%s + 1]);\n" % \ + (regN, regN)) + f.write(" }\n") + +def genptr_decl_writeble(f, tag, regtype, regid, regno): + regN="%s%sN" % (regtype,regid) + f.write(" TCGv %s%sV = tcg_temp_local_new();\n" % \ + (regtype, regid)) + if (regtype == "C"): + f.write(" const int %s = insn->regno[%d] + HEX_REG_SA0;\n" % \ + (regN, regno)) + else: + f.write(" const int %s = insn->regno[%d];\n" % (regN, regno)) + if ('A_CONDEXEC' in hex_common.attribdict[tag]): + f.write(" if (!is_preloaded(ctx, %s)) {\n" % regN) + f.write(" tcg_gen_mov_tl(hex_new_value[%s], hex_gpr[%s]);\n" % \ + (regN, regN)) + f.write(" }\n") + +def genptr_decl(f, tag, regtype, regid, regno): + regN="%s%sN" % (regtype,regid) + if (regtype == "R"): + if (regid in {"ss", "tt"}): + f.write(" TCGv_i64 %s%sV = tcg_temp_local_new_i64();\n" % \ + (regtype, regid)) + f.write(" const int %s = insn->regno[%d];\n" % \ + (regN, regno)) + elif (regid in {"dd", "ee", "xx", "yy"}): + genptr_decl_pair_writeble(f, tag, regtype, regid, regno) + elif (regid in {"s", "t", "u", "v"}): + f.write(" TCGv %s%sV = hex_gpr[insn->regno[%d]];\n" % \ + (regtype, regid, regno)) + elif (regid in {"d", "e", "x", "y"}): + genptr_decl_writeble(f, tag, regtype, regid, regno) + else: + print("Bad register parse: ", regtype, regid) + elif (regtype == "P"): + if (regid in {"s", "t", "u", "v"}): + f.write(" TCGv %s%sV = hex_pred[insn->regno[%d]];\n" % \ + (regtype, regid, regno)) + elif (regid in {"d", "e", "x"}): + genptr_decl_writeble(f, tag, regtype, regid, regno) + else: + print("Bad register parse: ", regtype, regid) + elif (regtype == "C"): + if (regid == "ss"): + f.write(" TCGv_i64 %s%sV = tcg_temp_local_new_i64();\n" % \ + (regtype, regid)) + f.write(" const int %s = insn->regno[%d] + HEX_REG_SA0;\n" % \ + (regN, regno)) + elif (regid == "dd"): + genptr_decl_pair_writeble(f, tag, regtype, regid, regno) + elif (regid == "s"): + f.write(" TCGv %s%sV = tcg_temp_local_new();\n" % \ + (regtype, regid)) + f.write(" const int %s%sN = insn->regno[%d] + HEX_REG_SA0;\n" % \ + (regtype, regid, regno)) + elif (regid == "d"): + genptr_decl_writeble(f, tag, regtype, regid, regno) + else: + print("Bad register parse: ", regtype, regid) + elif (regtype == "M"): + if (regid == "u"): + f.write(" const int %s%sN = insn->regno[%d];\n"% \ + (regtype, regid, regno)) + f.write(" TCGv %s%sV = hex_gpr[%s%sN + HEX_REG_M0];\n" % \ + (regtype, regid, regtype, regid)) + else: + print("Bad register parse: ", regtype, regid) + else: + print("Bad register parse: ", regtype, regid) + +def genptr_decl_new(f,regtype,regid,regno): + if (regtype == "N"): + if (regid in {"s", "t"}): + f.write(" TCGv %s%sN = hex_new_value[insn->regno[%d]];\n" % \ + (regtype, regid, regno)) + else: + print("Bad register parse: ", regtype, regid) + elif (regtype == "P"): + if (regid in {"t", "u", "v"}): + f.write(" TCGv %s%sN = hex_new_pred_value[insn->regno[%d]];\n" % \ + (regtype, regid, regno)) + else: + print("Bad register parse: ", regtype, regid) + else: + print("Bad register parse: ", regtype, regid) + +def genptr_decl_opn(f, tag, regtype, regid, toss, numregs, i): + if (hex_common.is_pair(regid)): + genptr_decl(f, tag, regtype, regid, i) + elif (hex_common.is_single(regid)): + if hex_common.is_old_val(regtype, regid, tag): + genptr_decl(f,tag, regtype, regid, i) + elif hex_common.is_new_val(regtype, regid, tag): + genptr_decl_new(f,regtype,regid,i) + else: + print("Bad register parse: ",regtype,regid,toss,numregs) + else: + print("Bad register parse: ",regtype,regid,toss,numregs) + +def genptr_decl_imm(f,immlett): + if (immlett.isupper()): + i = 1 + else: + i = 0 + f.write(" int %s = insn->immed[%d];\n" % \ + (hex_common.imm_name(immlett), i)) + +def genptr_free(f,regtype,regid,regno): + if (regtype == "R"): + if (regid in {"dd", "ss", "tt", "xx", "yy"}): + f.write(" tcg_temp_free_i64(%s%sV);\n" % (regtype, regid)) + elif (regid in {"d", "e", "x", "y"}): + f.write(" tcg_temp_free(%s%sV);\n" % (regtype, regid)) + elif (regid not in {"s", "t", "u", "v"}): + print("Bad register parse: ",regtype,regid) + elif (regtype == "P"): + if (regid in {"d", "e", "x"}): + f.write(" tcg_temp_free(%s%sV);\n" % (regtype, regid)) + elif (regid not in {"s", "t", "u", "v"}): + print("Bad register parse: ",regtype,regid) + elif (regtype == "C"): + if (regid in {"dd", "ss"}): + f.write(" tcg_temp_free_i64(%s%sV);\n" % (regtype, regid)) + elif (regid in {"d", "s"}): + f.write(" tcg_temp_free(%s%sV);\n" % (regtype, regid)) + else: + print("Bad register parse: ",regtype,regid) + elif (regtype == "M"): + if (regid != "u"): + print("Bad register parse: ", regtype, regid) + else: + print("Bad register parse: ", regtype, regid) + +def genptr_free_new(f,regtype,regid,regno): + if (regtype == "N"): + if (regid not in {"s", "t"}): + print("Bad register parse: ", regtype, regid) + elif (regtype == "P"): + if (regid not in {"t", "u", "v"}): + print("Bad register parse: ", regtype, regid) + else: + print("Bad register parse: ", regtype, regid) + +def genptr_free_opn(f,regtype,regid,i,tag): + if (hex_common.is_pair(regid)): + genptr_free(f,regtype,regid,i) + elif (hex_common.is_single(regid)): + if hex_common.is_old_val(regtype, regid, tag): + genptr_free(f,regtype,regid,i) + elif hex_common.is_new_val(regtype, regid, tag): + genptr_free_new(f,regtype,regid,i) + else: + print("Bad register parse: ",regtype,regid,toss,numregs) + else: + print("Bad register parse: ",regtype,regid,toss,numregs) + +def genptr_src_read(f,regtype,regid): + if (regtype == "R"): + if (regid in {"ss", "tt", "xx", "yy"}): + f.write(" tcg_gen_concat_i32_i64(%s%sV, hex_gpr[%s%sN],\n" % \ + (regtype, regid, regtype, regid)) + f.write(" hex_gpr[%s%sN + 1]);\n" % \ + (regtype, regid)) + elif (regid in {"x", "y"}): + f.write(" tcg_gen_mov_tl(%s%sV, hex_gpr[%s%sN]);\n" % \ + (regtype,regid,regtype,regid)) + elif (regid not in {"s", "t", "u", "v"}): + print("Bad register parse: ", regtype, regid) + elif (regtype == "P"): + if (regid == "x"): + f.write(" tcg_gen_mov_tl(%s%sV, hex_pred[%s%sN]);\n" % \ + (regtype, regid, regtype, regid)) + elif (regid not in {"s", "t", "u", "v"}): + print("Bad register parse: ", regtype, regid) + elif (regtype == "C"): + if (regid == "ss"): + f.write(" gen_read_ctrl_reg_pair(ctx, %s%sN, %s%sV);\n" % \ + (regtype, regid, regtype, regid)) + elif (regid == "s"): + f.write(" gen_read_ctrl_reg(ctx, %s%sN, %s%sV);\n" % \ + (regtype, regid, regtype, regid)) + else: + print("Bad register parse: ", regtype, regid) + elif (regtype == "M"): + if (regid != "u"): + print("Bad register parse: ", regtype, regid) + else: + print("Bad register parse: ", regtype, regid) + +def genptr_src_read_new(f,regtype,regid): + if (regtype == "N"): + if (regid not in {"s", "t"}): + print("Bad register parse: ", regtype, regid) + elif (regtype == "P"): + if (regid not in {"t", "u", "v"}): + print("Bad register parse: ", regtype, regid) + else: + print("Bad register parse: ", regtype, regid) + +def genptr_src_read_opn(f,regtype,regid,tag): + if (hex_common.is_pair(regid)): + genptr_src_read(f,regtype,regid) + elif (hex_common.is_single(regid)): + if hex_common.is_old_val(regtype, regid, tag): + genptr_src_read(f,regtype,regid) + elif hex_common.is_new_val(regtype, regid, tag): + genptr_src_read_new(f,regtype,regid) + else: + print("Bad register parse: ",regtype,regid,toss,numregs) + else: + print("Bad register parse: ",regtype,regid,toss,numregs) + +def gen_helper_call_opn(f, tag, regtype, regid, toss, numregs, i): + if (i > 0): f.write(", ") + if (hex_common.is_pair(regid)): + f.write("%s%sV" % (regtype,regid)) + elif (hex_common.is_single(regid)): + if hex_common.is_old_val(regtype, regid, tag): + f.write("%s%sV" % (regtype,regid)) + elif hex_common.is_new_val(regtype, regid, tag): + f.write("%s%sN" % (regtype,regid)) + else: + print("Bad register parse: ",regtype,regid,toss,numregs) + else: + print("Bad register parse: ",regtype,regid,toss,numregs) + +def gen_helper_decl_imm(f,immlett): + f.write(" TCGv tcgv_%s = tcg_const_tl(%s);\n" % \ + (hex_common.imm_name(immlett), hex_common.imm_name(immlett))) + +def gen_helper_call_imm(f,immlett): + f.write(", tcgv_%s" % hex_common.imm_name(immlett)) + +def gen_helper_free_imm(f,immlett): + f.write(" tcg_temp_free(tcgv_%s);\n" % hex_common.imm_name(immlett)) + +def genptr_dst_write_pair(f, tag, regtype, regid): + if ('A_CONDEXEC' in hex_common.attribdict[tag]): + f.write(" gen_log_predicated_reg_write_pair(%s%sN, %s%sV, insn->slot);\n" % \ + (regtype, regid, regtype, regid)) + else: + f.write(" gen_log_reg_write_pair(%s%sN, %s%sV);\n" % \ + (regtype, regid, regtype, regid)) + f.write(" ctx_log_reg_write_pair(ctx, %s%sN);\n" % \ + (regtype, regid)) + +def genptr_dst_write(f, tag, regtype, regid): + if (regtype == "R"): + if (regid in {"dd", "xx", "yy"}): + genptr_dst_write_pair(f, tag, regtype, regid) + elif (regid in {"d", "e", "x", "y"}): + if ('A_CONDEXEC' in hex_common.attribdict[tag]): + f.write(" gen_log_predicated_reg_write(%s%sN, %s%sV,\n" % \ + (regtype, regid, regtype, regid)) + f.write(" insn->slot);\n") + else: + f.write(" gen_log_reg_write(%s%sN, %s%sV);\n" % \ + (regtype, regid, regtype, regid)) + f.write(" ctx_log_reg_write(ctx, %s%sN);\n" % \ + (regtype, regid)) + else: + print("Bad register parse: ", regtype, regid) + elif (regtype == "P"): + if (regid in {"d", "e", "x"}): + f.write(" gen_log_pred_write(%s%sN, %s%sV);\n" % \ + (regtype, regid, regtype, regid)) + f.write(" ctx_log_pred_write(ctx, %s%sN);\n" % \ + (regtype, regid)) + else: + print("Bad register parse: ", regtype, regid) + elif (regtype == "C"): + if (regid == "dd"): + f.write(" gen_write_ctrl_reg_pair(ctx, %s%sN, %s%sV);\n" % \ + (regtype, regid, regtype, regid)) + elif (regid == "d"): + f.write(" gen_write_ctrl_reg(ctx, %s%sN, %s%sV);\n" % \ + (regtype, regid, regtype, regid)) + else: + print("Bad register parse: ", regtype, regid) + else: + print("Bad register parse: ", regtype, regid) + +def genptr_dst_write_opn(f,regtype, regid, tag): + if (hex_common.is_pair(regid)): + genptr_dst_write(f, tag, regtype, regid) + elif (hex_common.is_single(regid)): + genptr_dst_write(f, tag, regtype, regid) + 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: +## static void generate_A2_add() +## CPUHexagonState *env +## DisasContext *ctx, +## Insn *insn, +## Packet *pkt) +## { +## TCGv RdV = tcg_temp_local_new(); +## const int RdN = insn->regno[0]; +## TCGv RsV = hex_gpr[insn->regno[1]]; +## TCGv RtV = hex_gpr[insn->regno[2]]; +## <GEN> +## gen_log_reg_write(RdN, RdV); +## ctx_log_reg_write(ctx, RdN); +## tcg_temp_free(RdV); +## } +## +## where <GEN> depends on hex_common.skip_qemu_helper(tag) +## if hex_common.skip_qemu_helper(tag) is True +## <GEN> is fGEN_TCG_A2_add({ RdV=RsV+RtV;}); +## if hex_common.skip_qemu_helper(tag) is False +## <GEN> is gen_helper_A2_add(RdV, cpu_env, RsV, RtV); +## +def gen_tcg_func(f, tag, regs, imms): + f.write("static void generate_%s(\n" %tag) + f.write(" CPUHexagonState *env,\n") + f.write(" DisasContext *ctx,\n") + f.write(" Insn *insn,\n") + f.write(" Packet *pkt)\n") + f.write('{\n') + if hex_common.need_ea(tag): gen_decl_ea_tcg(f, tag) + i=0 + ## Declare all the operands (regs and immediates) + for regtype,regid,toss,numregs in regs: + genptr_decl_opn(f, tag, regtype, regid, toss, numregs, i) + i += 1 + for immlett,bits,immshift in imms: + genptr_decl_imm(f,immlett) + + if 'A_PRIV' in hex_common.attribdict[tag]: + f.write(' fCHECKFORPRIV();\n') + if 'A_GUEST' in hex_common.attribdict[tag]: + f.write(' fCHECKFORGUEST();\n') + + ## Read all the inputs + for regtype,regid,toss,numregs in regs: + if (hex_common.is_read(regid)): + genptr_src_read_opn(f,regtype,regid,tag) + + if ( hex_common.skip_qemu_helper(tag) ): + f.write(" fGEN_TCG_%s(%s);\n" % (tag, hex_common.semdict[tag])) + else: + ## Generate the call to the helper + for immlett,bits,immshift in imms: + gen_helper_decl_imm(f,immlett) + if hex_common.need_part1(tag): + f.write(" TCGv part1 = tcg_const_tl(insn->part1);\n") + if hex_common.need_slot(tag): + f.write(" TCGv slot = tcg_const_tl(insn->slot);\n") + f.write(" gen_helper_%s(" % (tag)) + i=0 + ## If there is a scalar result, it is the return type + for regtype,regid,toss,numregs in regs: + if (hex_common.is_written(regid)): + gen_helper_call_opn(f, tag, regtype, regid, toss, numregs, i) + i += 1 + if (i > 0): f.write(", ") + f.write("cpu_env") + i=1 + for regtype,regid,toss,numregs in regs: + if (hex_common.is_read(regid)): + gen_helper_call_opn(f, tag, regtype, regid, toss, numregs, i) + i += 1 + for immlett,bits,immshift in imms: + gen_helper_call_imm(f,immlett) + + if hex_common.need_slot(tag): f.write(", slot") + if hex_common.need_part1(tag): f.write(", part1" ) + f.write(");\n") + if hex_common.need_slot(tag): + f.write(" tcg_temp_free(slot);\n") + if hex_common.need_part1(tag): + f.write(" tcg_temp_free(part1);\n") + for immlett,bits,immshift in imms: + gen_helper_free_imm(f,immlett) + + ## Write all the outputs + for regtype,regid,toss,numregs in regs: + if (hex_common.is_written(regid)): + genptr_dst_write_opn(f,regtype, regid, tag) + + ## Free all the operands (regs and immediates) + if hex_common.need_ea(tag): gen_free_ea_tcg(f) + for regtype,regid,toss,numregs in regs: + genptr_free_opn(f,regtype,regid,i,tag) + i += 1 + + f.write("}\n\n") + +def gen_def_tcg_func(f, tag, tagregs, tagimms): + regs = tagregs[tag] + imms = tagimms[tag] + + gen_tcg_func(f, tag, regs, imms) + +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: + f.write("#ifndef HEXAGON_TCG_FUNCS_H\n") + f.write("#define HEXAGON_TCG_FUNCS_H\n\n") + + 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 + + gen_def_tcg_func(f, tag, tagregs, tagimms) + + f.write("#endif /* HEXAGON_TCG_FUNCS_H */\n") + +if __name__ == "__main__": + main() |