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Merge bb4dd595ed into 0fcf5c080d

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FlinkbaumFAU 2025-06-04 13:23:11 +00:00 • committed by GitHub
commit e4240f6ff3
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3 changed files with 51 additions and 8 deletions
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2
frontends/verilog/Makefile.inc
View file

@ -6,7 +6,7 @@ GENFILES += frontends/verilog/verilog_lexer.cc
frontends/verilog/verilog_parser.tab.cc: frontends/verilog/verilog_parser.y
$(Q) mkdir -p $(dir $@)
$(P) $(BISON) -Wall -Werror -o $@ -d -r all -b frontends/verilog/verilog_parser $<
$(P) $(BISON) -Wall -Wcex -Werror -o $@ -d -r all -b frontends/verilog/verilog_parser $<
frontends/verilog/verilog_parser.tab.hh: frontends/verilog/verilog_parser.tab.cc

1
frontends/verilog/verilog_lexer.l
View file

@ -224,6 +224,7 @@ TIME_SCALE_SUFFIX [munpf]?s
"begin" { return TOK_BEGIN; }
"end" { return TOK_END; }
"if" { return TOK_IF; }
"ifnone" { return TOK_IFNONE; }
"else" { return TOK_ELSE; }
"for" { return TOK_FOR; }
"posedge" { return TOK_POSEDGE; }

56
frontends/verilog/verilog_parser.y
View file

@ -402,7 +402,7 @@ static const AstNode *addAsgnBinopStmt(dict<IdString, AstNode*> *attr, AstNode *
%token TOK_INPUT TOK_OUTPUT TOK_INOUT TOK_WIRE TOK_WAND TOK_WOR TOK_REG TOK_LOGIC
%token TOK_INTEGER TOK_SIGNED TOK_ASSIGN TOK_ALWAYS TOK_INITIAL
%token TOK_ALWAYS_FF TOK_ALWAYS_COMB TOK_ALWAYS_LATCH
%token TOK_BEGIN TOK_END TOK_IF TOK_ELSE TOK_FOR TOK_WHILE TOK_REPEAT
%token TOK_BEGIN TOK_END TOK_IF TOK_ELSE TOK_IFNONE TOK_FOR TOK_WHILE TOK_REPEAT
%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
@ -1542,18 +1542,60 @@ list_of_specparam_assignments:
specparam_assignment:
ignspec_id '=' ignspec_expr ;
ignspec_opt_cond:
TOK_IF '(' ignspec_expr ')' | %empty;
path_declaration :
simple_path_declaration ';'
// | edge_sensitive_path_declaration
// | state_dependent_path_declaration
| state_dependent_path_declaration ';'
;
simple_path_declaration :
ignspec_opt_cond parallel_path_description '=' path_delay_value |
ignspec_opt_cond full_path_description '=' path_delay_value
parallel_path_description '=' path_delay_value |
full_path_description '=' path_delay_value
;
state_dependent_path_declaration:
TOK_IF '(' module_path_expression ')' simple_path_declaration
// | TOK_IF '(' module_path_expression ')' edge_sensitive_path_declaration
| TOK_IFNONE simple_path_declaration
;
module_path_expression:
module_path_primary
// Flatten out unary_operator to avoid shift/reduce conflict
| '!' attr module_path_primary { delete $2; }
| '~' attr module_path_primary { delete $2; }
| '&' attr module_path_primary { delete $2; }
| OP_NAND attr module_path_primary { delete $2; }
| '|' attr module_path_primary { delete $2; }
| OP_NOR attr module_path_primary { delete $2; }
| '^' attr module_path_primary { delete $2; }
| OP_XNOR attr module_path_primary { delete $2; }
// Flatten out binary_operator to avoid shift/reduce conflict
| module_path_expression OP_EQ attr module_path_expression { delete $3; }
| module_path_expression OP_NE attr module_path_expression { delete $3; }
| module_path_expression OP_LAND attr module_path_expression { delete $3; }
| module_path_expression OP_LOR attr module_path_expression { delete $3; }
| module_path_expression '&' attr module_path_expression { delete $3; }
| module_path_expression '|' attr module_path_expression { delete $3; }
| module_path_expression '^' attr module_path_expression { delete $3; }
| module_path_expression OP_XNOR attr module_path_expression { delete $3; }
// | module_path_conditional_expression
;
module_path_primary:
number
| TOK_ID { delete $1; }
// Deviate from specification: Normally string would not be allowed, however they are necessary for the ecp5 tests
| TOK_STRING { delete $1; }
// | module_path_concatenation
// | module_path_multiple_concatenation
// | function_subroutine_call
// | '(' module_path_minmax_expression ')'
;
number:
integral_number { delete $1; }
| TOK_REALVAL { delete $1; }
;
path_delay_value :