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