aboutsummaryrefslogtreecommitdiffstats
path: root/frontends/verilog/verilog_frontend.h
blob: 444cc7297c4082f711ec774d5889f874a4efe419 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
/*
 *  yosys -- Yosys Open SYnthesis Suite
 *
 *  Copyright (C) 2012  Clifford Wolf <clifford@clifford.at>
 *
 *  Permission to use, copy, modify, and/or distribute this software for any
 *  purpose with or without fee is hereby granted, provided that the above
 *  copyright notice and this permission notice appear in all copies.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 *  ---
 *
 *  The Verilog frontend.
 *
 *  This frontend is using the AST frontend library (see frontends/ast/).
 *  Thus this frontend does not generate RTLIL code directly but creates an
 *  AST directly from the Verilog parse tree and then passes this AST to
 *  the AST frontend library.
 *
 */

#ifndef VERILOG_FRONTEND_H
#define VERILOG_FRONTEND_H

#include "kernel/yosys.h"
#include "frontends/ast/ast.h"
#include <stdio.h>
#include <stdint.h>
#include <list>

YOSYS_NAMESPACE_BEGIN

namespace VERILOG_FRONTEND
{
	// this variable is set to a new AST_DESIGN node and then filled with the AST by the bison parser
	extern struct AST::AstNode *current_ast;

	// this function converts a Verilog constant to an AST_CONSTANT node
	AST::AstNode *const2ast(std::string code, char case_type = 0, bool warn_z = false);

	// names of locally typedef'ed types in a stack
	typedef std::map<std::string, AST::AstNode*> UserTypeMap;
	extern std::vector<UserTypeMap *> user_type_stack;

	// names of package typedef'ed types
	extern std::map<std::string, AST::AstNode*> pkg_user_types;

	// state of `default_nettype
	extern bool default_nettype_wire;

	// running in SystemVerilog mode
	extern bool sv_mode;

	// running in -formal mode
	extern bool formal_mode;

	// running in -noassert mode
	extern bool noassert_mode;

	// running in -noassume mode
	extern bool noassume_mode;

	// running in -norestrict mode
	extern bool norestrict_mode;

	// running in -assume-asserts mode
	extern bool assume_asserts_mode;

	// running in -assert-assumes mode
	extern bool assert_assumes_mode;

	// running in -lib mode
	extern bool lib_mode;

	// running in -specify mode
	extern bool specify_mode;

	// lexer input stream
	extern std::istream *lexin;
}

YOSYS_NAMESPACE_END

// the usual bison/flex stuff
extern int frontend_verilog_yydebug;
void frontend_verilog_yyerror(char const *fmt, ...);
void frontend_verilog_yyrestart(FILE *f);
int frontend_verilog_yyparse(void);
int frontend_verilog_yylex_destroy(void);
int frontend_verilog_yyget_lineno(void);
void frontend_verilog_yyset_lineno (int);

#endif