diff --git a/tgt-blif/Makefile.in b/tgt-blif/Makefile.in index cde16b3cd..0398ee669 100644 --- a/tgt-blif/Makefile.in +++ b/tgt-blif/Makefile.in @@ -45,7 +45,7 @@ CXXFLAGS = @WARNING_FLAGS@ @CXXFLAGS@ LDFLAGS = @LDFLAGS@ O = blif.o constants.o logic_gate.o lpm.o lpm_add.o lpm_cmp_eq.o lpm_cmp_gt.o \ - lpm_part_vp.o nex_data.o + lpm_part_vp.o lpm_re_logic.o nex_data.o all: dep blif.tgt diff --git a/tgt-blif/lpm.cc b/tgt-blif/lpm.cc index 0c894a82a..7aee6da93 100644 --- a/tgt-blif/lpm.cc +++ b/tgt-blif/lpm.cc @@ -91,6 +91,14 @@ int print_lpm(FILE*fd, ivl_lpm_t net) case IVL_LPM_PART_VP: rc += print_lpm_part_vp(fd, net); break; + case IVL_LPM_RE_AND: + case IVL_LPM_RE_OR: + case IVL_LPM_RE_XOR: + case IVL_LPM_RE_NAND: + case IVL_LPM_RE_NOR: + case IVL_LPM_RE_XNOR: + rc += print_lpm_re_logic(fd, net); + break; case IVL_LPM_SUB: rc += print_lpm_sub(fd, net); break; diff --git a/tgt-blif/lpm_re_logic.cc b/tgt-blif/lpm_re_logic.cc new file mode 100644 index 000000000..d3903388a --- /dev/null +++ b/tgt-blif/lpm_re_logic.cc @@ -0,0 +1,125 @@ +/* + * Copyright (c) 2013 Stephen Williams (steve@icarus.com) + * + * This source code is free software; you can redistribute it + * and/or modify it in source code form 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, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + + +# include "priv.h" +# include "nex_data.h" +# include + +static bool re_xor(unsigned val) +{ + bool flag = false; + for (size_t idx = 0 ; idx < 8*sizeof(val) ; idx += 1) { + if (val&1) flag ^= true; + val >>= 1; + } + return flag; +} + +int print_lpm_re_logic(FILE*fd, ivl_lpm_t net) +{ + ivl_nexus_t nex_q = ivl_lpm_q(net); + blif_nex_data_t*ned_q = blif_nex_data_t::get_nex_data(nex_q); + + ivl_nexus_t nex_d = ivl_lpm_data(net,0); + blif_nex_data_t*ned_d = blif_nex_data_t::get_nex_data(nex_d); + + assert(ned_q->get_width() == 1); + + fprintf(fd, ".names"); + for (size_t idx = 0 ; idx < ned_d->get_width() ; idx += 1) { + fprintf(fd, " %s%s", ned_d->get_name(), ned_d->get_name_index(idx)); + } + fprintf(fd, " %s%s\n", ned_q->get_name(), ned_q->get_name_index(0)); + + switch (ivl_lpm_type(net)) { + case IVL_LPM_RE_AND: + for (size_t idx = 0 ; idx < ned_d->get_width() ; idx += 1) + fputc('1', fd); + fprintf(fd, " 1\n"); + break; + + case IVL_LPM_RE_OR: + for (size_t idx = 0 ; idx < ned_d->get_width() ; idx += 1) { + for (size_t wid = 0 ; wid < ned_d->get_width() ; wid += 1) { + if (wid==idx) + fputc('1', fd); + else + fputc('-', fd); + } + fprintf(fd, " 1\n"); + } + break; + + case IVL_LPM_RE_XOR: + assert(ned_d->get_width() < 8*sizeof(unsigned)); + for (unsigned val = 0; val < (1U<get_width()); val += 1) { + if (! re_xor(val)) + continue; + + for (size_t idx = 0 ; idx < ned_d->get_width() ; idx += 1) { + if (val & (1<get_width() ; idx += 1) { + for (size_t wid = 0 ; wid < ned_d->get_width() ; wid += 1) { + if (wid==idx) + fputc('0', fd); + else + fputc('-', fd); + } + fprintf(fd, " 1\n"); + } + break; + + case IVL_LPM_RE_NOR: + for (size_t idx = 0 ; idx < ned_d->get_width() ; idx += 1) + fputc('0', fd); + fprintf(fd, " 1\n"); + break; + + case IVL_LPM_RE_XNOR: + assert(ned_d->get_width() < 8*sizeof(unsigned)); + for (unsigned val = 0; val < (1U<get_width()); val += 1) { + if (re_xor(val)) + continue; + + for (size_t idx = 0 ; idx < ned_d->get_width() ; idx += 1) { + if (val & (1<