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
>> 41 YYLTYPE yylloc;
26 extern bool treesource_error; 42 extern bool treesource_error;
27 43
28 /* CAUTION: this will stop working if we ever 44 /* CAUTION: this will stop working if we ever use yyless() or yyunput() */
29 #define YY_USER_ACTION \ 45 #define YY_USER_ACTION \
30 { \ 46 { \
31 srcpos_update(&yylloc, yytext, 47 srcpos_update(&yylloc, yytext, yyleng); \
32 } 48 }
33 49
34 /*#define LEXDEBUG 1*/ 50 /*#define LEXDEBUG 1*/
35 51
36 #ifdef LEXDEBUG 52 #ifdef LEXDEBUG
37 #define DPRINT(fmt, ...) fprintf(stderr 53 #define DPRINT(fmt, ...) fprintf(stderr, fmt, ##__VA_ARGS__)
38 #else 54 #else
39 #define DPRINT(fmt, ...) do { } while ( 55 #define DPRINT(fmt, ...) do { } while (0)
40 #endif 56 #endif
41 57
42 static int dts_version = 1; 58 static int dts_version = 1;
43 59
44 #define BEGIN_DEFAULT() DPRINT("<V1>\n 60 #define BEGIN_DEFAULT() DPRINT("<V1>\n"); \
45 BEGIN(V1); \ 61 BEGIN(V1); \
46 62
47 static void push_input_file(const char *filena 63 static void push_input_file(const char *filename);
48 static bool pop_input_file(void); 64 static bool pop_input_file(void);
49 static void PRINTF(1, 2) lexical_error(const c 65 static void PRINTF(1, 2) lexical_error(const char *fmt, ...);
50 66
51 %} 67 %}
52 68
53 %% 69 %%
54 <*>"/include/"{WS}*{STRING} { 70 <*>"/include/"{WS}*{STRING} {
55 char *name = strchr(yy 71 char *name = strchr(yytext, '\"') + 1;
56 yytext[yyleng-1] = '\0 72 yytext[yyleng-1] = '\0';
57 push_input_file(name); 73 push_input_file(name);
58 } 74 }
59 75
60 <*>^"#"(line)?[ \t]+[0-9]+[ \t]+{STRING}([ \t] !! 76 <*>^"#"(line)?[ \t]+[0-9]+[ \t]+{STRING}([ \t]+[0-9]+)? {
61 char *line, *fnstart, 77 char *line, *fnstart, *fnend;
62 struct data fn; 78 struct data fn;
63 /* skip text before li 79 /* skip text before line # */
64 line = yytext; 80 line = yytext;
65 while (!isdigit((unsig 81 while (!isdigit((unsigned char)*line))
66 line++; 82 line++;
67 83
68 /* regexp ensures that 84 /* regexp ensures that first and list "
69 * in the whole yytext 85 * in the whole yytext are those at
70 * beginning and end o 86 * beginning and end of the filename string */
71 fnstart = memchr(yytex 87 fnstart = memchr(yytext, '"', yyleng);
72 for (fnend = yytext + 88 for (fnend = yytext + yyleng - 1;
73 *fnend != '"'; fn 89 *fnend != '"'; fnend--)
74 ; 90 ;
75 assert(fnstart && fnen 91 assert(fnstart && fnend && (fnend > fnstart));
76 92
77 fn = data_copy_escape_ 93 fn = data_copy_escape_string(fnstart + 1,
78 94 fnend - fnstart - 1);
79 95
80 /* Don't allow nuls in 96 /* Don't allow nuls in filenames */
81 if (memchr(fn.val, '\0 97 if (memchr(fn.val, '\0', fn.len - 1))
82 lexical_error( 98 lexical_error("nul in line number directive");
83 99
84 /* -1 since #line is t 100 /* -1 since #line is the number of the next line */
85 srcpos_set_line(xstrdu 101 srcpos_set_line(xstrdup(fn.val), atoi(line) - 1);
86 data_free(fn); 102 data_free(fn);
87 } 103 }
88 104
89 <*><<EOF>> { 105 <*><<EOF>> {
90 if (!pop_input_file()) 106 if (!pop_input_file()) {
91 yyterminate(); 107 yyterminate();
92 } 108 }
93 } 109 }
94 110
95 <*>{STRING} { 111 <*>{STRING} {
96 DPRINT("String: %s\n", 112 DPRINT("String: %s\n", yytext);
97 yylval.data = data_cop 113 yylval.data = data_copy_escape_string(yytext+1,
98 yyleng 114 yyleng-2);
99 return DT_STRING; 115 return DT_STRING;
100 } 116 }
101 117
102 <*>"/dts-v1/" { 118 <*>"/dts-v1/" {
103 DPRINT("Keyword: /dts- 119 DPRINT("Keyword: /dts-v1/\n");
104 dts_version = 1; 120 dts_version = 1;
105 BEGIN_DEFAULT(); 121 BEGIN_DEFAULT();
106 return DT_V1; 122 return DT_V1;
107 } 123 }
108 124
109 <*>"/plugin/" { 125 <*>"/plugin/" {
110 DPRINT("Keyword: /plug 126 DPRINT("Keyword: /plugin/\n");
111 return DT_PLUGIN; 127 return DT_PLUGIN;
112 } 128 }
113 129
114 <*>"/memreserve/" { 130 <*>"/memreserve/" {
115 DPRINT("Keyword: /memr 131 DPRINT("Keyword: /memreserve/\n");
116 BEGIN_DEFAULT(); 132 BEGIN_DEFAULT();
117 return DT_MEMRESERVE; 133 return DT_MEMRESERVE;
118 } 134 }
119 135
120 <*>"/bits/" { 136 <*>"/bits/" {
121 DPRINT("Keyword: /bits 137 DPRINT("Keyword: /bits/\n");
122 BEGIN_DEFAULT(); 138 BEGIN_DEFAULT();
123 return DT_BITS; 139 return DT_BITS;
124 } 140 }
125 141
126 <*>"/delete-property/" { 142 <*>"/delete-property/" {
127 DPRINT("Keyword: /dele 143 DPRINT("Keyword: /delete-property/\n");
128 DPRINT("<PROPNODENAME> 144 DPRINT("<PROPNODENAME>\n");
129 BEGIN(PROPNODENAME); 145 BEGIN(PROPNODENAME);
130 return DT_DEL_PROP; 146 return DT_DEL_PROP;
131 } 147 }
132 148
133 <*>"/delete-node/" { 149 <*>"/delete-node/" {
134 DPRINT("Keyword: /dele 150 DPRINT("Keyword: /delete-node/\n");
135 DPRINT("<PROPNODENAME> 151 DPRINT("<PROPNODENAME>\n");
136 BEGIN(PROPNODENAME); 152 BEGIN(PROPNODENAME);
137 return DT_DEL_NODE; 153 return DT_DEL_NODE;
138 } 154 }
139 155
140 <*>"/omit-if-no-ref/" { 156 <*>"/omit-if-no-ref/" {
141 DPRINT("Keyword: /omit 157 DPRINT("Keyword: /omit-if-no-ref/\n");
142 DPRINT("<PROPNODENAME> 158 DPRINT("<PROPNODENAME>\n");
143 BEGIN(PROPNODENAME); 159 BEGIN(PROPNODENAME);
144 return DT_OMIT_NO_REF; 160 return DT_OMIT_NO_REF;
145 } 161 }
146 162
147 <*>{LABEL}: { 163 <*>{LABEL}: {
148 DPRINT("Label: %s\n", 164 DPRINT("Label: %s\n", yytext);
149 yylval.labelref = xstr 165 yylval.labelref = xstrdup(yytext);
150 yylval.labelref[yyleng 166 yylval.labelref[yyleng-1] = '\0';
151 return DT_LABEL; 167 return DT_LABEL;
152 } 168 }
153 169
154 <V1>([0-9]+|0[xX][0-9a-fA-F]+)(U|L|UL|LL|ULL)? 170 <V1>([0-9]+|0[xX][0-9a-fA-F]+)(U|L|UL|LL|ULL)? {
155 char *e; 171 char *e;
156 DPRINT("Integer Litera 172 DPRINT("Integer Literal: '%s'\n", yytext);
157 173
158 errno = 0; 174 errno = 0;
159 yylval.integer = strto 175 yylval.integer = strtoull(yytext, &e, 0);
160 176
161 if (*e && e[strspn(e, 177 if (*e && e[strspn(e, "UL")]) {
162 lexical_error( 178 lexical_error("Bad integer literal '%s'",
163 179 yytext);
164 } 180 }
165 181
166 if (errno == ERANGE) 182 if (errno == ERANGE)
167 lexical_error( 183 lexical_error("Integer literal '%s' out of range",
168 184 yytext);
169 else 185 else
170 /* ERANGE is t 186 /* ERANGE is the only strtoull error triggerable
171 * by strings 187 * by strings matching the pattern */
172 assert(errno = 188 assert(errno == 0);
173 return DT_LITERAL; 189 return DT_LITERAL;
174 } 190 }
175 191
176 <*>{CHAR_LITERAL} { 192 <*>{CHAR_LITERAL} {
177 struct data d; 193 struct data d;
178 DPRINT("Character lite 194 DPRINT("Character literal: %s\n", yytext);
179 195
180 d = data_copy_escape_s 196 d = data_copy_escape_string(yytext+1, yyleng-2);
181 if (d.len == 1) { 197 if (d.len == 1) {
182 lexical_error( 198 lexical_error("Empty character literal");
183 yylval.integer 199 yylval.integer = 0;
184 } else { 200 } else {
185 yylval.integer 201 yylval.integer = (unsigned char)d.val[0];
186 202
187 if (d.len > 2) 203 if (d.len > 2)
188 lexica 204 lexical_error("Character literal has %d"
189 205 " characters instead of 1",
190 206 d.len - 1);
191 } 207 }
192 208
193 data_free(d); 209 data_free(d);
194 return DT_CHAR_LITERAL 210 return DT_CHAR_LITERAL;
195 } 211 }
196 212
197 <*>\&{LABEL} { /* label reference */ 213 <*>\&{LABEL} { /* label reference */
198 DPRINT("Ref: %s\n", yy 214 DPRINT("Ref: %s\n", yytext+1);
199 yylval.labelref = xstr 215 yylval.labelref = xstrdup(yytext+1);
200 return DT_LABEL_REF; !! 216 return DT_REF;
201 } 217 }
202 218
203 <*>"&{"{PATHCHAR}*\} { /* new-style p !! 219 <*>"&{/"{PATHCHAR}*\} { /* new-style path reference */
204 yytext[yyleng-1] = '\0 220 yytext[yyleng-1] = '\0';
205 DPRINT("Ref: %s\n", yy 221 DPRINT("Ref: %s\n", yytext+2);
206 yylval.labelref = xstr 222 yylval.labelref = xstrdup(yytext+2);
207 return DT_PATH_REF; !! 223 return DT_REF;
208 } 224 }
209 225
210 <BYTESTRING>[0-9a-fA-F]{2} { 226 <BYTESTRING>[0-9a-fA-F]{2} {
211 yylval.byte = strtol(y 227 yylval.byte = strtol(yytext, NULL, 16);
212 DPRINT("Byte: %02x\n", 228 DPRINT("Byte: %02x\n", (int)yylval.byte);
213 return DT_BYTE; 229 return DT_BYTE;
214 } 230 }
215 231
216 <BYTESTRING>"]" { 232 <BYTESTRING>"]" {
217 DPRINT("/BYTESTRING\n" 233 DPRINT("/BYTESTRING\n");
218 BEGIN_DEFAULT(); 234 BEGIN_DEFAULT();
219 return ']'; 235 return ']';
220 } 236 }
221 237
222 <PROPNODENAME>\\?{PROPNODECHAR}+ { 238 <PROPNODENAME>\\?{PROPNODECHAR}+ {
223 DPRINT("PropNodeName: 239 DPRINT("PropNodeName: %s\n", yytext);
224 yylval.propnodename = 240 yylval.propnodename = xstrdup((yytext[0] == '\\') ?
225 241 yytext + 1 : yytext);
226 BEGIN_DEFAULT(); 242 BEGIN_DEFAULT();
227 return DT_PROPNODENAME 243 return DT_PROPNODENAME;
228 } 244 }
229 245
230 "/incbin/" { 246 "/incbin/" {
231 DPRINT("Binary Include 247 DPRINT("Binary Include\n");
232 return DT_INCBIN; 248 return DT_INCBIN;
233 } 249 }
234 250
235 <*>{WS}+ /* eat whitespace */ 251 <*>{WS}+ /* eat whitespace */
236 <*>{COMMENT}+ /* eat C-style comments */ 252 <*>{COMMENT}+ /* eat C-style comments */
237 <*>{LINECOMMENT}+ /* eat C++-style comments */ 253 <*>{LINECOMMENT}+ /* eat C++-style comments */
238 254
239 <*>"<<" { return DT_LSHIFT; }; 255 <*>"<<" { return DT_LSHIFT; };
240 <*>">>" { return DT_RSHIFT; }; 256 <*>">>" { return DT_RSHIFT; };
241 <*>"<=" { return DT_LE; }; 257 <*>"<=" { return DT_LE; };
242 <*>">=" { return DT_GE; }; 258 <*>">=" { return DT_GE; };
243 <*>"==" { return DT_EQ; }; 259 <*>"==" { return DT_EQ; };
244 <*>"!=" { return DT_NE; }; 260 <*>"!=" { return DT_NE; };
245 <*>"&&" { return DT_AND; }; 261 <*>"&&" { return DT_AND; };
246 <*>"||" { return DT_OR; }; 262 <*>"||" { return DT_OR; };
247 263
248 <*>. { 264 <*>. {
249 DPRINT("Char: %c (\\x% 265 DPRINT("Char: %c (\\x%02x)\n", yytext[0],
250 (unsigned)yyte 266 (unsigned)yytext[0]);
251 if (yytext[0] == '[') 267 if (yytext[0] == '[') {
252 DPRINT("<BYTES 268 DPRINT("<BYTESTRING>\n");
253 BEGIN(BYTESTRI 269 BEGIN(BYTESTRING);
254 } 270 }
255 if ((yytext[0] == '{') 271 if ((yytext[0] == '{')
256 || (yytext[0] == ' 272 || (yytext[0] == ';')) {
257 DPRINT("<PROPN 273 DPRINT("<PROPNODENAME>\n");
258 BEGIN(PROPNODE 274 BEGIN(PROPNODENAME);
259 } 275 }
260 return yytext[0]; 276 return yytext[0];
261 } 277 }
262 278
263 %% 279 %%
264 280
265 static void push_input_file(const char *filena 281 static void push_input_file(const char *filename)
266 { 282 {
267 assert(filename); 283 assert(filename);
268 284
269 srcfile_push(filename); 285 srcfile_push(filename);
270 286
271 yyin = current_srcfile->f; 287 yyin = current_srcfile->f;
272 288
273 yypush_buffer_state(yy_create_buffer(y 289 yypush_buffer_state(yy_create_buffer(yyin, YY_BUF_SIZE));
274 } 290 }
275 291
276 292
277 static bool pop_input_file(void) 293 static bool pop_input_file(void)
278 { 294 {
279 if (srcfile_pop() == 0) 295 if (srcfile_pop() == 0)
280 return false; 296 return false;
281 297
282 yypop_buffer_state(); 298 yypop_buffer_state();
283 yyin = current_srcfile->f; 299 yyin = current_srcfile->f;
284 300
285 return true; 301 return true;
286 } 302 }
287 303
288 static void lexical_error(const char *fmt, ... 304 static void lexical_error(const char *fmt, ...)
289 { 305 {
290 va_list ap; 306 va_list ap;
291 307
292 va_start(ap, fmt); 308 va_start(ap, fmt);
293 srcpos_verror(&yylloc, "Lexical error" 309 srcpos_verror(&yylloc, "Lexical error", fmt, ap);
294 va_end(ap); 310 va_end(ap);
295 311
296 treesource_error = true; 312 treesource_error = true;
297 } 313 }
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