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| author | Lukasz Dalek <ldalek@antmicro.com> | 2020-06-23 18:50:50 +0200 |
|---|---|---|
| committer | Kamil Rakoczy <krakoczy@antmicro.com> | 2020-06-24 14:32:12 +0200 |
| commit | a4b4c22c962e2971a093da9cf2364ec19050dd32 (patch) | |
| tree | 94058ba714e9e8539b5c519e7cf6de8880a3b75d | |
| parent | a5ca4eeefb13c24042bae36ea8f640b5529efd93 (diff) | |
| download | yosys-a4b4c22c962e2971a093da9cf2364ec19050dd32.tar.gz yosys-a4b4c22c962e2971a093da9cf2364ec19050dd32.tar.bz2 yosys-a4b4c22c962e2971a093da9cf2364ec19050dd32.zip | |
Support missing xor-assign operator
Signed-off-by: Lukasz Dalek <ldalek@antmicro.com>
| -rw-r--r-- | frontends/verilog/verilog_lexer.l | 1 | ||||
| -rw-r--r-- | frontends/verilog/verilog_parser.y | 10 |
2 files changed, 10 insertions, 1 deletions
diff --git a/frontends/verilog/verilog_lexer.l b/frontends/verilog/verilog_lexer.l index c77da4274..8c9f403a3 100644 --- a/frontends/verilog/verilog_lexer.l +++ b/frontends/verilog/verilog_lexer.l @@ -528,6 +528,7 @@ import[ \t\r\n]+\"(DPI|DPI-C)\"[ \t\r\n]+function[ \t\r\n]+ { "|=" { SV_KEYWORD(TOK_OR_ASSIGN); } "+=" { SV_KEYWORD(TOK_PLUS_ASSIGN); } +"^=" { SV_KEYWORD(TOK_XOR_ASSIGN); } [-+]?[=*]> { if (!specify_mode) REJECT; diff --git a/frontends/verilog/verilog_parser.y b/frontends/verilog/verilog_parser.y index e8b74cf83..4c2a78809 100644 --- a/frontends/verilog/verilog_parser.y +++ b/frontends/verilog/verilog_parser.y @@ -259,7 +259,7 @@ static void rewriteAsMemoryNode(AstNode *node, AstNode *rangeNode) %token TOK_INTEGER TOK_SIGNED TOK_ASSIGN TOK_PLUS_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_DPI_FUNCTION TOK_POSEDGE TOK_NEGEDGE TOK_OR TOK_OR_ASSIGN TOK_AUTOMATIC +%token TOK_DPI_FUNCTION TOK_POSEDGE TOK_NEGEDGE TOK_OR TOK_OR_ASSIGN TOK_XOR_ASSIGN 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 TOK_SPECIFY_AND TOK_IGNORED_SPECIFY_AND @@ -2335,6 +2335,14 @@ simple_behavioral_stmt: SET_AST_NODE_LOC(node, @2, @5); append_attr(node, $1); } | + attr lvalue TOK_XOR_ASSIGN delay expr { + AstNode *xor_node = new AstNode(AST_BIT_XOR, $2->clone(), $5); + AstNode *node = new AstNode(AST_ASSIGN_EQ, $2, xor_node); + SET_AST_NODE_LOC(xor_node, @2, @5); + SET_AST_NODE_LOC(node, @2, @5); + ast_stack.back()->children.push_back(node); + append_attr(node, $1); + } | attr lvalue TOK_OR_ASSIGN delay expr { AstNode *or_node = new AstNode(AST_BIT_OR, $2->clone(), $5); SET_AST_NODE_LOC(or_node, @2, @5); |