1 /* SPDX-License-Identifier: GPL-2.0-or-later * <<
2 /* 1 /*
3 * (C) Copyright David Gibson <dwg@au1.ibm.com> 2 * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005.
>> 3 *
>> 4 *
>> 5 * This program is free software; you can redistribute it and/or
>> 6 * modify it under the terms of the GNU General Public License as
>> 7 * published by the Free Software Foundation; either version 2 of the
>> 8 * License, or (at your option) any later version.
>> 9 *
>> 10 * This program is distributed in the hope that it will be useful,
>> 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
>> 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
>> 13 * General Public License for more details.
>> 14 *
>> 15 * You should have received a copy of the GNU General Public License
>> 16 * along with this program; if not, write to the Free Software
>> 17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
>> 18 * USA
4 */ 19 */
5 20
6 %option noyywrap nounput noinput never-interac 21 %option noyywrap nounput noinput never-interactive
7 22
8 %x BYTESTRING 23 %x BYTESTRING
9 %x PROPNODENAME 24 %x PROPNODENAME
10 %s V1 25 %s V1
11 26
12 PROPNODECHAR [a-zA-Z0-9,._+*#?@-] 27 PROPNODECHAR [a-zA-Z0-9,._+*#?@-]
13 PATHCHAR ({PROPNODECHAR}|[/]) 28 PATHCHAR ({PROPNODECHAR}|[/])
14 LABEL [a-zA-Z_][a-zA-Z0-9_]* 29 LABEL [a-zA-Z_][a-zA-Z0-9_]*
15 STRING \"([^\\"]|\\.)*\" 30 STRING \"([^\\"]|\\.)*\"
16 CHAR_LITERAL '([^']|\\')*' 31 CHAR_LITERAL '([^']|\\')*'
17 WS [[:space:]] 32 WS [[:space:]]
18 COMMENT "/*"([^*]|\*+[^*/])*\*+"/" 33 COMMENT "/*"([^*]|\*+[^*/])*\*+"/"
19 LINECOMMENT "//".*\n 34 LINECOMMENT "//".*\n
20 35
21 %{ 36 %{
22 #include "dtc.h" 37 #include "dtc.h"
23 #include "srcpos.h" 38 #include "srcpos.h"
24 #include "dtc-parser.tab.h" 39 #include "dtc-parser.tab.h"
25 40
26 extern bool treesource_error; 41 extern bool treesource_error;
27 42
28 /* CAUTION: this will stop working if we ever 43 /* CAUTION: this will stop working if we ever use yyless() or yyunput() */
29 #define YY_USER_ACTION \ 44 #define YY_USER_ACTION \
30 { \ 45 { \
31 srcpos_update(&yylloc, yytext, 46 srcpos_update(&yylloc, yytext, yyleng); \
32 } 47 }
33 48
34 /*#define LEXDEBUG 1*/ 49 /*#define LEXDEBUG 1*/
35 50
36 #ifdef LEXDEBUG 51 #ifdef LEXDEBUG
37 #define DPRINT(fmt, ...) fprintf(stderr 52 #define DPRINT(fmt, ...) fprintf(stderr, fmt, ##__VA_ARGS__)
38 #else 53 #else
39 #define DPRINT(fmt, ...) do { } while ( 54 #define DPRINT(fmt, ...) do { } while (0)
40 #endif 55 #endif
41 56
42 static int dts_version = 1; 57 static int dts_version = 1;
43 58
44 #define BEGIN_DEFAULT() DPRINT("<V1>\n 59 #define BEGIN_DEFAULT() DPRINT("<V1>\n"); \
45 BEGIN(V1); \ 60 BEGIN(V1); \
46 61
47 static void push_input_file(const char *filena 62 static void push_input_file(const char *filename);
48 static bool pop_input_file(void); 63 static bool pop_input_file(void);
49 static void PRINTF(1, 2) lexical_error(const c 64 static void PRINTF(1, 2) lexical_error(const char *fmt, ...);
50 65
51 %} 66 %}
52 67
53 %% 68 %%
54 <*>"/include/"{WS}*{STRING} { 69 <*>"/include/"{WS}*{STRING} {
55 char *name = strchr(yy 70 char *name = strchr(yytext, '\"') + 1;
56 yytext[yyleng-1] = '\0 71 yytext[yyleng-1] = '\0';
57 push_input_file(name); 72 push_input_file(name);
58 } 73 }
59 74
60 <*>^"#"(line)?[ \t]+[0-9]+[ \t]+{STRING}([ \t] !! 75 <*>^"#"(line)?[ \t]+[0-9]+[ \t]+{STRING}([ \t]+[0-9]+)? {
61 char *line, *fnstart, 76 char *line, *fnstart, *fnend;
62 struct data fn; 77 struct data fn;
63 /* skip text before li 78 /* skip text before line # */
64 line = yytext; 79 line = yytext;
65 while (!isdigit((unsig 80 while (!isdigit((unsigned char)*line))
66 line++; 81 line++;
67 82
68 /* regexp ensures that 83 /* regexp ensures that first and list "
69 * in the whole yytext 84 * in the whole yytext are those at
70 * beginning and end o 85 * beginning and end of the filename string */
71 fnstart = memchr(yytex 86 fnstart = memchr(yytext, '"', yyleng);
72 for (fnend = yytext + 87 for (fnend = yytext + yyleng - 1;
73 *fnend != '"'; fn 88 *fnend != '"'; fnend--)
74 ; 89 ;
75 assert(fnstart && fnen 90 assert(fnstart && fnend && (fnend > fnstart));
76 91
77 fn = data_copy_escape_ 92 fn = data_copy_escape_string(fnstart + 1,
78 93 fnend - fnstart - 1);
79 94
80 /* Don't allow nuls in 95 /* Don't allow nuls in filenames */
81 if (memchr(fn.val, '\0 96 if (memchr(fn.val, '\0', fn.len - 1))
82 lexical_error( 97 lexical_error("nul in line number directive");
83 98
84 /* -1 since #line is t 99 /* -1 since #line is the number of the next line */
85 srcpos_set_line(xstrdu 100 srcpos_set_line(xstrdup(fn.val), atoi(line) - 1);
86 data_free(fn); 101 data_free(fn);
87 } 102 }
88 103
89 <*><<EOF>> { 104 <*><<EOF>> {
90 if (!pop_input_file()) 105 if (!pop_input_file()) {
91 yyterminate(); 106 yyterminate();
92 } 107 }
93 } 108 }
94 109
95 <*>{STRING} { 110 <*>{STRING} {
96 DPRINT("String: %s\n", 111 DPRINT("String: %s\n", yytext);
97 yylval.data = data_cop 112 yylval.data = data_copy_escape_string(yytext+1,
98 yyleng 113 yyleng-2);
99 return DT_STRING; 114 return DT_STRING;
100 } 115 }
101 116
102 <*>"/dts-v1/" { 117 <*>"/dts-v1/" {
103 DPRINT("Keyword: /dts- 118 DPRINT("Keyword: /dts-v1/\n");
104 dts_version = 1; 119 dts_version = 1;
105 BEGIN_DEFAULT(); 120 BEGIN_DEFAULT();
106 return DT_V1; 121 return DT_V1;
107 } 122 }
108 123
109 <*>"/plugin/" { 124 <*>"/plugin/" {
110 DPRINT("Keyword: /plug 125 DPRINT("Keyword: /plugin/\n");
111 return DT_PLUGIN; 126 return DT_PLUGIN;
112 } 127 }
113 128
114 <*>"/memreserve/" { 129 <*>"/memreserve/" {
115 DPRINT("Keyword: /memr 130 DPRINT("Keyword: /memreserve/\n");
116 BEGIN_DEFAULT(); 131 BEGIN_DEFAULT();
117 return DT_MEMRESERVE; 132 return DT_MEMRESERVE;
118 } 133 }
119 134
120 <*>"/bits/" { 135 <*>"/bits/" {
121 DPRINT("Keyword: /bits 136 DPRINT("Keyword: /bits/\n");
122 BEGIN_DEFAULT(); 137 BEGIN_DEFAULT();
123 return DT_BITS; 138 return DT_BITS;
124 } 139 }
125 140
126 <*>"/delete-property/" { 141 <*>"/delete-property/" {
127 DPRINT("Keyword: /dele 142 DPRINT("Keyword: /delete-property/\n");
128 DPRINT("<PROPNODENAME> 143 DPRINT("<PROPNODENAME>\n");
129 BEGIN(PROPNODENAME); 144 BEGIN(PROPNODENAME);
130 return DT_DEL_PROP; 145 return DT_DEL_PROP;
131 } 146 }
132 147
133 <*>"/delete-node/" { 148 <*>"/delete-node/" {
134 DPRINT("Keyword: /dele 149 DPRINT("Keyword: /delete-node/\n");
135 DPRINT("<PROPNODENAME> 150 DPRINT("<PROPNODENAME>\n");
136 BEGIN(PROPNODENAME); 151 BEGIN(PROPNODENAME);
137 return DT_DEL_NODE; 152 return DT_DEL_NODE;
138 } 153 }
139 154
140 <*>"/omit-if-no-ref/" { <<
141 DPRINT("Keyword: /omit <<
142 DPRINT("<PROPNODENAME> <<
143 BEGIN(PROPNODENAME); <<
144 return DT_OMIT_NO_REF; <<
145 } <<
146 <<
147 <*>{LABEL}: { 155 <*>{LABEL}: {
148 DPRINT("Label: %s\n", 156 DPRINT("Label: %s\n", yytext);
149 yylval.labelref = xstr 157 yylval.labelref = xstrdup(yytext);
150 yylval.labelref[yyleng 158 yylval.labelref[yyleng-1] = '\0';
151 return DT_LABEL; 159 return DT_LABEL;
152 } 160 }
153 161
154 <V1>([0-9]+|0[xX][0-9a-fA-F]+)(U|L|UL|LL|ULL)? 162 <V1>([0-9]+|0[xX][0-9a-fA-F]+)(U|L|UL|LL|ULL)? {
155 char *e; 163 char *e;
156 DPRINT("Integer Litera 164 DPRINT("Integer Literal: '%s'\n", yytext);
157 165
158 errno = 0; 166 errno = 0;
159 yylval.integer = strto 167 yylval.integer = strtoull(yytext, &e, 0);
160 168
161 if (*e && e[strspn(e, 169 if (*e && e[strspn(e, "UL")]) {
162 lexical_error( 170 lexical_error("Bad integer literal '%s'",
163 171 yytext);
164 } 172 }
165 173
166 if (errno == ERANGE) 174 if (errno == ERANGE)
167 lexical_error( 175 lexical_error("Integer literal '%s' out of range",
168 176 yytext);
169 else 177 else
170 /* ERANGE is t 178 /* ERANGE is the only strtoull error triggerable
171 * by strings 179 * by strings matching the pattern */
172 assert(errno = 180 assert(errno == 0);
173 return DT_LITERAL; 181 return DT_LITERAL;
174 } 182 }
175 183
176 <*>{CHAR_LITERAL} { 184 <*>{CHAR_LITERAL} {
177 struct data d; 185 struct data d;
178 DPRINT("Character lite 186 DPRINT("Character literal: %s\n", yytext);
179 187
180 d = data_copy_escape_s 188 d = data_copy_escape_string(yytext+1, yyleng-2);
181 if (d.len == 1) { 189 if (d.len == 1) {
182 lexical_error( 190 lexical_error("Empty character literal");
183 yylval.integer 191 yylval.integer = 0;
184 } else { 192 } else {
185 yylval.integer 193 yylval.integer = (unsigned char)d.val[0];
186 194
187 if (d.len > 2) 195 if (d.len > 2)
188 lexica 196 lexical_error("Character literal has %d"
189 197 " characters instead of 1",
190 198 d.len - 1);
191 } 199 }
192 200
193 data_free(d); 201 data_free(d);
194 return DT_CHAR_LITERAL 202 return DT_CHAR_LITERAL;
195 } 203 }
196 204
197 <*>\&{LABEL} { /* label reference */ 205 <*>\&{LABEL} { /* label reference */
198 DPRINT("Ref: %s\n", yy 206 DPRINT("Ref: %s\n", yytext+1);
199 yylval.labelref = xstr 207 yylval.labelref = xstrdup(yytext+1);
200 return DT_LABEL_REF; !! 208 return DT_REF;
201 } 209 }
202 210
203 <*>"&{"{PATHCHAR}*\} { /* new-style p !! 211 <*>"&{/"{PATHCHAR}*\} { /* new-style path reference */
204 yytext[yyleng-1] = '\0 212 yytext[yyleng-1] = '\0';
205 DPRINT("Ref: %s\n", yy 213 DPRINT("Ref: %s\n", yytext+2);
206 yylval.labelref = xstr 214 yylval.labelref = xstrdup(yytext+2);
207 return DT_PATH_REF; !! 215 return DT_REF;
208 } 216 }
209 217
210 <BYTESTRING>[0-9a-fA-F]{2} { 218 <BYTESTRING>[0-9a-fA-F]{2} {
211 yylval.byte = strtol(y 219 yylval.byte = strtol(yytext, NULL, 16);
212 DPRINT("Byte: %02x\n", 220 DPRINT("Byte: %02x\n", (int)yylval.byte);
213 return DT_BYTE; 221 return DT_BYTE;
214 } 222 }
215 223
216 <BYTESTRING>"]" { 224 <BYTESTRING>"]" {
217 DPRINT("/BYTESTRING\n" 225 DPRINT("/BYTESTRING\n");
218 BEGIN_DEFAULT(); 226 BEGIN_DEFAULT();
219 return ']'; 227 return ']';
220 } 228 }
221 229
222 <PROPNODENAME>\\?{PROPNODECHAR}+ { 230 <PROPNODENAME>\\?{PROPNODECHAR}+ {
223 DPRINT("PropNodeName: 231 DPRINT("PropNodeName: %s\n", yytext);
224 yylval.propnodename = 232 yylval.propnodename = xstrdup((yytext[0] == '\\') ?
225 233 yytext + 1 : yytext);
226 BEGIN_DEFAULT(); 234 BEGIN_DEFAULT();
227 return DT_PROPNODENAME 235 return DT_PROPNODENAME;
228 } 236 }
229 237
230 "/incbin/" { 238 "/incbin/" {
231 DPRINT("Binary Include 239 DPRINT("Binary Include\n");
232 return DT_INCBIN; 240 return DT_INCBIN;
233 } 241 }
234 242
235 <*>{WS}+ /* eat whitespace */ 243 <*>{WS}+ /* eat whitespace */
236 <*>{COMMENT}+ /* eat C-style comments */ 244 <*>{COMMENT}+ /* eat C-style comments */
237 <*>{LINECOMMENT}+ /* eat C++-style comments */ 245 <*>{LINECOMMENT}+ /* eat C++-style comments */
238 246
239 <*>"<<" { return DT_LSHIFT; }; 247 <*>"<<" { return DT_LSHIFT; };
240 <*>">>" { return DT_RSHIFT; }; 248 <*>">>" { return DT_RSHIFT; };
241 <*>"<=" { return DT_LE; }; 249 <*>"<=" { return DT_LE; };
242 <*>">=" { return DT_GE; }; 250 <*>">=" { return DT_GE; };
243 <*>"==" { return DT_EQ; }; 251 <*>"==" { return DT_EQ; };
244 <*>"!=" { return DT_NE; }; 252 <*>"!=" { return DT_NE; };
245 <*>"&&" { return DT_AND; }; 253 <*>"&&" { return DT_AND; };
246 <*>"||" { return DT_OR; }; 254 <*>"||" { return DT_OR; };
247 255
248 <*>. { 256 <*>. {
249 DPRINT("Char: %c (\\x% 257 DPRINT("Char: %c (\\x%02x)\n", yytext[0],
250 (unsigned)yyte 258 (unsigned)yytext[0]);
251 if (yytext[0] == '[') 259 if (yytext[0] == '[') {
252 DPRINT("<BYTES 260 DPRINT("<BYTESTRING>\n");
253 BEGIN(BYTESTRI 261 BEGIN(BYTESTRING);
254 } 262 }
255 if ((yytext[0] == '{') 263 if ((yytext[0] == '{')
256 || (yytext[0] == ' 264 || (yytext[0] == ';')) {
257 DPRINT("<PROPN 265 DPRINT("<PROPNODENAME>\n");
258 BEGIN(PROPNODE 266 BEGIN(PROPNODENAME);
259 } 267 }
260 return yytext[0]; 268 return yytext[0];
261 } 269 }
262 270
263 %% 271 %%
264 272
265 static void push_input_file(const char *filena 273 static void push_input_file(const char *filename)
266 { 274 {
267 assert(filename); 275 assert(filename);
268 276
269 srcfile_push(filename); 277 srcfile_push(filename);
270 278
271 yyin = current_srcfile->f; 279 yyin = current_srcfile->f;
272 280
273 yypush_buffer_state(yy_create_buffer(y 281 yypush_buffer_state(yy_create_buffer(yyin, YY_BUF_SIZE));
274 } 282 }
275 283
276 284
277 static bool pop_input_file(void) 285 static bool pop_input_file(void)
278 { 286 {
279 if (srcfile_pop() == 0) 287 if (srcfile_pop() == 0)
280 return false; 288 return false;
281 289
282 yypop_buffer_state(); 290 yypop_buffer_state();
283 yyin = current_srcfile->f; 291 yyin = current_srcfile->f;
284 292
285 return true; 293 return true;
286 } 294 }
287 295
288 static void lexical_error(const char *fmt, ... 296 static void lexical_error(const char *fmt, ...)
289 { 297 {
290 va_list ap; 298 va_list ap;
291 299
292 va_start(ap, fmt); 300 va_start(ap, fmt);
293 srcpos_verror(&yylloc, "Lexical error" 301 srcpos_verror(&yylloc, "Lexical error", fmt, ap);
294 va_end(ap); 302 va_end(ap);
295 303
296 treesource_error = true; 304 treesource_error = true;
297 } 305 }
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