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
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
/* $Id$
* GAS-compatible parser header file
*
* Copyright (C) 2005-2007 Peter Johnson
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the author nor the names of other contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND OTHER CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR OTHER CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef YASM_GAS_PARSER_H
#define YASM_GAS_PARSER_H
#define YYCTYPE unsigned char
#define MAX_SAVED_LINE_LEN 80
enum tokentype {
INTNUM = 258,
FLTNUM,
STRING,
REG,
REGGROUP,
SEGREG,
TARGETMOD,
LEFT_OP,
RIGHT_OP,
ID,
LABEL,
CPP_LINE_MARKER,
NASM_LINE_MARKER,
NONE
};
typedef union {
unsigned int int_info;
yasm_intnum *intn;
yasm_floatnum *flt;
yasm_bytecode *bc;
uintptr_t arch_data;
struct {
char *contents;
size_t len;
} str;
} yystype;
#define YYSTYPE yystype
enum gas_parser_state {
INITIAL,
COMMENT,
SECTION_DIRECTIVE,
NASM_FILENAME
};
typedef struct yasm_parser_gas {
/*@only@*/ yasm_object *object;
/* last "base" label for local (.) labels */
/*@null@*/ char *locallabel_base;
size_t locallabel_base_len;
/* .line/.file: we have to see both to start setting linemap versions */
int dir_fileline;
/*@null@*/ char *dir_file;
unsigned long dir_line;
/* Have we seen a line marker? */
int seen_line_marker;
/*@dependent@*/ yasm_preproc *preproc;
/*@dependent@*/ yasm_errwarns *errwarns;
/*@dependent@*/ yasm_linemap *linemap;
/*@null@*/ yasm_bytecode *prev_bc;
yasm_bytecode *temp_bc;
int save_input;
YYCTYPE save_line[2][MAX_SAVED_LINE_LEN];
int save_last;
/* Line data storage used in preproc_input(). */
char *line, *linepos;
size_t lineleft;
yasm_scanner s;
enum gas_parser_state state;
int token; /* enum tokentype or any character */
yystype tokval;
char tokch; /* first character of token */
/* one token of lookahead; used sparingly */
int peek_token; /* NONE if none */
yystype peek_tokval;
char peek_tokch;
/* Index of local labels; what's stored here is the /next/ index,
* so these are all 0 at start.
*/
unsigned long local[10];
/* Parser-handled directives HAMT lookup */
HAMT *dirs;
int is_nasm_preproc;
int is_cpp_preproc;
} yasm_parser_gas;
/* shorter access names to commonly used parser_gas fields */
#define p_object (parser_gas->object)
#define p_symtab (parser_gas->object->symtab)
#define cursect (parser_gas->object->cur_section)
#define curtok (parser_gas->token)
#define curval (parser_gas->tokval)
#define INTNUM_val (curval.intn)
#define FLTNUM_val (curval.flt)
#define STRING_val (curval.str)
#define REG_val (curval.arch_data)
#define REGGROUP_val (curval.arch_data)
#define SEGREG_val (curval.arch_data)
#define TARGETMOD_val (curval.arch_data)
#define ID_val (curval.str.contents)
#define ID_len (curval.str.len)
#define LABEL_val (curval.str.contents)
#define LABEL_len (curval.str.len)
#define cur_line (yasm_linemap_get_current(parser_gas->linemap))
#define p_expr_new(l,o,r) yasm_expr_create(o,l,r,cur_line)
#define p_expr_new_tree(l,o,r) yasm_expr_create_tree(l,o,r,cur_line)
#define p_expr_new_branch(o,r) yasm_expr_create_branch(o,r,cur_line)
#define p_expr_new_ident(r) yasm_expr_create_ident(r,cur_line)
void gas_parser_parse(yasm_parser_gas *parser_gas);
void gas_parser_cleanup(yasm_parser_gas *parser_gas);
int gas_parser_lex(YYSTYPE *lvalp, yasm_parser_gas *parser_gas);
#endif
|
