1/*
2 * GAS-compatible parser header file
3 *
4 *  Copyright (C) 2005-2007  Peter Johnson
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of the author nor the names of other contributors
15 *    may be used to endorse or promote products derived from this
16 *    software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND OTHER CONTRIBUTORS ``AS IS''
19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR OTHER CONTRIBUTORS BE
22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
29 */
30#ifndef YASM_GAS_PARSER_H
31#define YASM_GAS_PARSER_H
32
33#define YYCTYPE         unsigned char
34
35#define MAX_SAVED_LINE_LEN  80
36
37enum tokentype {
38    INTNUM = 258,
39    FLTNUM,
40    STRING,
41    REG,
42    REGGROUP,
43    SEGREG,
44    TARGETMOD,
45    LEFT_OP,
46    RIGHT_OP,
47    ID,
48    LABEL,
49    CPP_LINE_MARKER,
50    NASM_LINE_MARKER,
51    NONE
52};
53
54typedef union {
55    unsigned int int_info;
56    yasm_intnum *intn;
57    yasm_floatnum *flt;
58    yasm_bytecode *bc;
59    uintptr_t arch_data;
60    struct {
61        char *contents;
62        size_t len;
63    } str;
64} yystype;
65#define YYSTYPE yystype
66
67enum gas_parser_state {
68    INITIAL,
69    COMMENT,
70    SECTION_DIRECTIVE,
71    NASM_FILENAME
72};
73
74typedef struct yasm_parser_gas {
75    /*@only@*/ yasm_object *object;
76
77    /* last "base" label for local (.) labels */
78    /*@null@*/ char *locallabel_base;
79    size_t locallabel_base_len;
80
81    /* .line/.file: we have to see both to start setting linemap versions */
82    int dir_fileline;
83    /*@null@*/ char *dir_file;
84    unsigned long dir_line;
85
86    /* Have we seen a line marker? */
87    int seen_line_marker;
88
89    /*@dependent@*/ yasm_preproc *preproc;
90    /*@dependent@*/ yasm_errwarns *errwarns;
91
92    /*@dependent@*/ yasm_linemap *linemap;
93
94    /*@null@*/ yasm_bytecode *prev_bc;
95    yasm_bytecode *temp_bc;
96
97    int save_input;
98    YYCTYPE save_line[2][MAX_SAVED_LINE_LEN];
99    int save_last;
100
101    /* Line data storage used in preproc_input(). */
102    char *line, *linepos;
103    size_t lineleft;
104
105    yasm_scanner s;
106    enum gas_parser_state state;
107
108    int token;          /* enum tokentype or any character */
109    yystype tokval;
110    char tokch;         /* first character of token */
111
112    /* one token of lookahead; used sparingly */
113    int peek_token;     /* NONE if none */
114    yystype peek_tokval;
115    char peek_tokch;
116
117    /* Index of local labels; what's stored here is the /next/ index,
118     * so these are all 0 at start.
119     */
120    unsigned long local[10];
121
122    /* Parser-handled directives HAMT lookup */
123    HAMT *dirs;
124
125    int intel_syntax;
126
127    int is_nasm_preproc;
128    int is_cpp_preproc;
129} yasm_parser_gas;
130
131/* shorter access names to commonly used parser_gas fields */
132#define p_object        (parser_gas->object)
133#define p_symtab        (parser_gas->object->symtab)
134#define cursect         (parser_gas->object->cur_section)
135#define curtok          (parser_gas->token)
136#define curval          (parser_gas->tokval)
137
138#define INTNUM_val              (curval.intn)
139#define FLTNUM_val              (curval.flt)
140#define STRING_val              (curval.str)
141#define REG_val                 (curval.arch_data)
142#define REGGROUP_val            (curval.arch_data)
143#define SEGREG_val              (curval.arch_data)
144#define TARGETMOD_val           (curval.arch_data)
145#define ID_val                  (curval.str.contents)
146#define ID_len                  (curval.str.len)
147#define LABEL_val               (curval.str.contents)
148#define LABEL_len               (curval.str.len)
149
150#define cur_line        (yasm_linemap_get_current(parser_gas->linemap))
151
152#define p_expr_new(l,o,r)       yasm_expr_create(o,l,r,cur_line)
153#define p_expr_new_tree(l,o,r)  yasm_expr_create_tree(l,o,r,cur_line)
154#define p_expr_new_branch(o,r)  yasm_expr_create_branch(o,r,cur_line)
155#define p_expr_new_ident(r)     yasm_expr_create_ident(r,cur_line)
156
157yasm_bytecode *parse_instr_intel(yasm_parser_gas *parser_gas);
158
159void gas_parser_parse(yasm_parser_gas *parser_gas);
160void gas_parser_cleanup(yasm_parser_gas *parser_gas);
161int gas_parser_lex(YYSTYPE *lvalp, yasm_parser_gas *parser_gas);
162
163#endif
164