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authorRuben Undheim <ruben.undheim@gmail.com>2019-03-28 23:35:03 +0100
committerRuben Undheim <ruben.undheim@gmail.com>2019-03-28 23:35:03 +0100
commitff5734b20220e6fb4a3913cf5279ed94bb5156ea (patch)
tree4c438282926d7bac304ad3ad6ad89523c4c1d784 /backends/btor/btor.cc
parentdb3c67fd6e140893450a44870ee9a75dd1f48b27 (diff)
Imported GIT HEAD: 0.8+20190328git32bd0f2
Diffstat (limited to 'backends/btor/btor.cc')
-rw-r--r--backends/btor/btor.cc118
1 files changed, 105 insertions, 13 deletions
diff --git a/backends/btor/btor.cc b/backends/btor/btor.cc
index 58d2a862..55c49499 100644
--- a/backends/btor/btor.cc
+++ b/backends/btor/btor.cc
@@ -133,12 +133,13 @@ struct BtorWorker
cell_recursion_guard.insert(cell);
btorf_push(log_id(cell));
- if (cell->type.in("$add", "$sub", "$and", "$or", "$xor", "$xnor", "$shl", "$sshl", "$shr", "$sshr", "$shift", "$shiftx",
- "$_AND_", "$_NAND_", "$_OR_", "$_NOR_", "$_XOR_", "$_XNOR_"))
+ if (cell->type.in("$add", "$sub", "$mul", "$and", "$or", "$xor", "$xnor", "$shl", "$sshl", "$shr", "$sshr", "$shift", "$shiftx",
+ "$concat", "$_AND_", "$_NAND_", "$_OR_", "$_NOR_", "$_XOR_", "$_XNOR_"))
{
string btor_op;
if (cell->type == "$add") btor_op = "add";
if (cell->type == "$sub") btor_op = "sub";
+ if (cell->type == "$mul") btor_op = "mul";
if (cell->type.in("$shl", "$sshl")) btor_op = "sll";
if (cell->type == "$shr") btor_op = "srl";
if (cell->type == "$sshr") btor_op = "sra";
@@ -146,6 +147,7 @@ struct BtorWorker
if (cell->type.in("$and", "$_AND_")) btor_op = "and";
if (cell->type.in("$or", "$_OR_")) btor_op = "or";
if (cell->type.in("$xor", "$_XOR_")) btor_op = "xor";
+ if (cell->type == "$concat") btor_op = "concat";
if (cell->type == "$_NAND_") btor_op = "nand";
if (cell->type == "$_NOR_") btor_op = "nor";
if (cell->type.in("$xnor", "$_XNOR_")) btor_op = "xnor";
@@ -214,6 +216,40 @@ struct BtorWorker
goto okay;
}
+ if (cell->type.in("$div", "$mod"))
+ {
+ string btor_op;
+ if (cell->type == "$div") btor_op = "div";
+ if (cell->type == "$mod") btor_op = "rem";
+ log_assert(!btor_op.empty());
+
+ int width = GetSize(cell->getPort("\\Y"));
+ width = std::max(width, GetSize(cell->getPort("\\A")));
+ width = std::max(width, GetSize(cell->getPort("\\B")));
+
+ bool a_signed = cell->hasParam("\\A_SIGNED") ? cell->getParam("\\A_SIGNED").as_bool() : false;
+ bool b_signed = cell->hasParam("\\B_SIGNED") ? cell->getParam("\\B_SIGNED").as_bool() : false;
+
+ int nid_a = get_sig_nid(cell->getPort("\\A"), width, a_signed);
+ int nid_b = get_sig_nid(cell->getPort("\\B"), width, b_signed);
+
+ int sid = get_bv_sid(width);
+ int nid = next_nid++;
+ btorf("%d %c%s %d %d %d\n", nid, a_signed || b_signed ? 's' : 'u', btor_op.c_str(), sid, nid_a, nid_b);
+
+ SigSpec sig = sigmap(cell->getPort("\\Y"));
+
+ if (GetSize(sig) < width) {
+ int sid = get_bv_sid(GetSize(sig));
+ int nid2 = next_nid++;
+ btorf("%d slice %d %d %d 0\n", nid2, sid, nid, GetSize(sig)-1);
+ nid = nid2;
+ }
+
+ add_nid_sig(nid, sig);
+ goto okay;
+ }
+
if (cell->type.in("$_ANDNOT_", "$_ORNOT_"))
{
int sid = get_bv_sid(1);
@@ -506,6 +542,18 @@ struct BtorWorker
}
}
+ Const initval;
+ for (int i = 0; i < GetSize(sig_q); i++)
+ if (initbits.count(sig_q[i]))
+ initval.bits.push_back(initbits.at(sig_q[i]) ? State::S1 : State::S0);
+ else
+ initval.bits.push_back(State::Sx);
+
+ int nid_init_val = -1;
+
+ if (!initval.is_fully_undef())
+ nid_init_val = get_sig_nid(initval);
+
int sid = get_bv_sid(GetSize(sig_q));
int nid = next_nid++;
@@ -514,15 +562,7 @@ struct BtorWorker
else
btorf("%d state %d %s\n", nid, sid, log_id(symbol));
- Const initval;
- for (int i = 0; i < GetSize(sig_q); i++)
- if (initbits.count(sig_q[i]))
- initval.bits.push_back(initbits.at(sig_q[i]) ? State::S1 : State::S0);
- else
- initval.bits.push_back(State::Sx);
-
- if (!initval.is_fully_undef()) {
- int nid_init_val = get_sig_nid(initval);
+ if (nid_init_val >= 0) {
int nid_init = next_nid++;
if (verbose)
btorf("; initval = %s\n", log_signal(initval));
@@ -575,6 +615,7 @@ struct BtorWorker
{
int abits = cell->getParam("\\ABITS").as_int();
int width = cell->getParam("\\WIDTH").as_int();
+ int nwords = cell->getParam("\\SIZE").as_int();
int rdports = cell->getParam("\\RD_PORTS").as_int();
int wrports = cell->getParam("\\WR_PORTS").as_int();
@@ -601,6 +642,52 @@ struct BtorWorker
int data_sid = get_bv_sid(width);
int bool_sid = get_bv_sid(1);
int sid = get_mem_sid(abits, width);
+
+ Const initdata = cell->getParam("\\INIT");
+ initdata.exts(nwords*width);
+ int nid_init_val = -1;
+
+ if (!initdata.is_fully_undef())
+ {
+ bool constword = true;
+ Const firstword = initdata.extract(0, width);
+
+ for (int i = 1; i < nwords; i++) {
+ Const thisword = initdata.extract(i*width, width);
+ if (thisword != firstword) {
+ constword = false;
+ break;
+ }
+ }
+
+ if (constword)
+ {
+ if (verbose)
+ btorf("; initval = %s\n", log_signal(firstword));
+ nid_init_val = get_sig_nid(firstword);
+ }
+ else
+ {
+ int nid_init_val = next_nid++;
+ btorf("%d state %d\n", nid_init_val, sid);
+
+ for (int i = 0; i < nwords; i++) {
+ Const thisword = initdata.extract(i*width, width);
+ if (thisword.is_fully_undef())
+ continue;
+ Const thisaddr(i, abits);
+ int nid_thisword = get_sig_nid(thisword);
+ int nid_thisaddr = get_sig_nid(thisaddr);
+ int last_nid_init_val = nid_init_val;
+ nid_init_val = next_nid++;
+ if (verbose)
+ btorf("; initval[%d] = %s\n", i, log_signal(thisword));
+ btorf("%d write %d %d %d %d\n", nid_init_val, sid, last_nid_init_val, nid_thisaddr, nid_thisword);
+ }
+ }
+ }
+
+
int nid = next_nid++;
int nid_head = nid;
@@ -609,6 +696,12 @@ struct BtorWorker
else
btorf("%d state %d %s\n", nid, sid, log_id(cell));
+ if (nid_init_val >= 0)
+ {
+ int nid_init = next_nid++;
+ btorf("%d init %d %d %d\n", nid_init, sid, nid, nid_init_val);
+ }
+
if (asyncwr)
{
for (int port = 0; port < wrports; port++)
@@ -892,9 +985,8 @@ struct BtorWorker
btorf_push(stringf("output %s", log_id(wire)));
- int sid = get_bv_sid(GetSize(wire));
int nid = get_sig_nid(wire);
- btorf("%d output %d %d %s\n", next_nid++, sid, nid, log_id(wire));
+ btorf("%d output %d %s\n", next_nid++, nid, log_id(wire));
btorf_pop(stringf("output %s", log_id(wire)));
}