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Added $slice and $concat cell types

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This commit is contained in:
Clifford Wolf 2014-02-07 17:44:57 +01:00
parent a1ac710ab8
commit fc3b3c4ec3
8 changed files with 140 additions and 4 deletions
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19
kernel/celltypes.h
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@ -270,6 +270,20 @@ struct CellTypes
static RTLIL::Const eval(RTLIL::Cell *cell, const RTLIL::Const &arg1, const RTLIL::Const &arg2)
{
if (cell->type == "$slice") {
RTLIL::Const ret;
int width = cell->parameters.at("\\Y_WIDTH").as_int();
int offset = cell->parameters.at("\\OFFSET").as_int();
ret.bits.insert(ret.bits.end(), arg1.bits.begin()+offset, arg1.bits.begin()+offset+width);
return ret;
}
if (cell->type == "$concat") {
RTLIL::Const ret = arg1;
ret.bits.insert(ret.bits.end(), arg2.bits.begin(), arg2.bits.end());
return ret;
}
bool signed_a = cell->parameters.count("\\A_SIGNED") > 0 && cell->parameters["\\A_SIGNED"].as_bool();
bool signed_b = cell->parameters.count("\\B_SIGNED") > 0 && cell->parameters["\\B_SIGNED"].as_bool();
int result_len = cell->parameters.count("\\Y_WIDTH") > 0 ? cell->parameters["\\Y_WIDTH"].as_int() : -1;
@ -289,10 +303,7 @@ struct CellTypes
}
assert(sel.bits.size() == 0);
bool signed_a = cell->parameters.count("\\A_SIGNED") > 0 && cell->parameters["\\A_SIGNED"].as_bool();
bool signed_b = cell->parameters.count("\\B_SIGNED") > 0 && cell->parameters["\\B_SIGNED"].as_bool();
int result_len = cell->parameters.count("\\Y_WIDTH") > 0 ? cell->parameters["\\Y_WIDTH"].as_int() : -1;
return eval(cell->type, arg1, arg2, signed_a, signed_b, result_len);
return eval(cell, arg1, arg2);
}
};