diff options
Diffstat (limited to 'frontends/verilog/verilog_parser.y')
| -rw-r--r-- | frontends/verilog/verilog_parser.y | 69 |
1 files changed, 67 insertions, 2 deletions
diff --git a/frontends/verilog/verilog_parser.y b/frontends/verilog/verilog_parser.y index 218d6f738..0a41ba581 100644 --- a/frontends/verilog/verilog_parser.y +++ b/frontends/verilog/verilog_parser.y @@ -136,7 +136,7 @@ struct specify_rise_fall { %token TOK_DPI_FUNCTION TOK_POSEDGE TOK_NEGEDGE TOK_OR TOK_AUTOMATIC %token TOK_CASE TOK_CASEX TOK_CASEZ TOK_ENDCASE TOK_DEFAULT %token TOK_FUNCTION TOK_ENDFUNCTION TOK_TASK TOK_ENDTASK TOK_SPECIFY -%token TOK_IGNORED_SPECIFY TOK_ENDSPECIFY TOK_SPECPARAM +%token TOK_IGNORED_SPECIFY TOK_ENDSPECIFY TOK_SPECPARAM TOK_SPECIFY_AND %token TOK_GENERATE TOK_ENDGENERATE TOK_GENVAR TOK_REAL %token TOK_SYNOPSYS_FULL_CASE TOK_SYNOPSYS_PARALLEL_CASE %token TOK_SUPPLY0 TOK_SUPPLY1 TOK_TO_SIGNED TOK_TO_UNSIGNED @@ -153,7 +153,7 @@ struct specify_rise_fall { %type <specify_target_ptr> specify_target %type <specify_triple_ptr> specify_triple %type <specify_rise_fall_ptr> specify_rise_fall -%type <ast> specify_if +%type <ast> specify_if specify_condition %type <ch> specify_edge // operator precedence from low to high @@ -815,6 +815,63 @@ specify_item: delete oper; delete target; delete timing; + } | + TOK_ID '(' specify_edge expr specify_condition ',' specify_edge expr specify_condition ',' expr ')' ';' { + bool limit_gt = false; + if (*$1 == "$setup" || *$1 == "$hold") + limit_gt = true; + else if (*$1 == "$skew") + limit_gt = false; + else + frontend_verilog_yyerror("Unsupported specify rule type: %s\n", $1->c_str()); + + AstNode *src_pen = AstNode::mkconst_int($3 != 0, false, 1); + AstNode *src_pol = AstNode::mkconst_int($3 == 'p', false, 1); + AstNode *src_expr = $4, *src_en = $5 ? $5 : AstNode::mkconst_int(1, false, 1); + + AstNode *dst_pen = AstNode::mkconst_int($7 != 0, false, 1); + AstNode *dst_pol = AstNode::mkconst_int($7 == 'p', false, 1); + AstNode *dst_expr = $8, *dst_en = $9 ? $9 : AstNode::mkconst_int(1, false, 1); + + AstNode *limit = $11; + + AstNode *cell = new AstNode(AST_CELL); + ast_stack.back()->children.push_back(cell); + cell->str = stringf("$specify$%d", autoidx++); + cell->children.push_back(new AstNode(AST_CELLTYPE)); + cell->children.back()->str = "$specrule"; + + cell->children.push_back(new AstNode(AST_ARGUMENT, src_en)); + cell->children.back()->str = "\\SRC_EN"; + + cell->children.push_back(new AstNode(AST_ARGUMENT, src_expr)); + cell->children.back()->str = "\\SRC"; + + cell->children.push_back(new AstNode(AST_PARASET, src_pen)); + cell->children.back()->str = "\\SRC_PEN"; + + cell->children.push_back(new AstNode(AST_PARASET, src_pol)); + cell->children.back()->str = "\\SRC_POL"; + + cell->children.push_back(new AstNode(AST_ARGUMENT, dst_en)); + cell->children.back()->str = "\\DST_EN"; + + cell->children.push_back(new AstNode(AST_ARGUMENT, dst_expr)); + cell->children.back()->str = "\\DST"; + + cell->children.push_back(new AstNode(AST_PARASET, dst_pen)); + cell->children.back()->str = "\\DST_PEN"; + + cell->children.push_back(new AstNode(AST_PARASET, dst_pol)); + cell->children.back()->str = "\\DST_POL"; + + cell->children.push_back(new AstNode(AST_PARASET, AstNode::mkconst_int(limit_gt, false, 1))); + cell->children.back()->str = "\\LIMIT_GT"; + + cell->children.push_back(new AstNode(AST_PARASET, limit)); + cell->children.back()->str = "\\T_LIMIT"; + + delete $1; }; specify_if: @@ -825,6 +882,14 @@ specify_if: $$ = nullptr; }; +specify_condition: + TOK_SPECIFY_AND expr { + $$ = $2; + } | + /* empty */ { + $$ = nullptr; + }; + specify_target: expr { $$ = new specify_target; |