1/*
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
19 */
20
21#include "dtc.h"
22#include "srcpos.h"
23
24extern FILE *yyin;
25extern int yyparse(void);
26extern YYLTYPE yylloc;
27
28struct dt_info *parser_output;
29bool treesource_error;
30
31struct dt_info *dt_from_source(const char *fname)
32{
33	parser_output = NULL;
34	treesource_error = false;
35
36	srcfile_push(fname);
37	yyin = current_srcfile->f;
38	yylloc.file = current_srcfile;
39
40	if (yyparse() != 0)
41		die("Unable to parse input tree\n");
42
43	if (treesource_error)
44		die("Syntax error parsing input tree\n");
45
46	return parser_output;
47}
48
49static void write_prefix(FILE *f, int level)
50{
51	int i;
52
53	for (i = 0; i < level; i++)
54		fputc('\t', f);
55}
56
57static bool isstring(char c)
58{
59	return (isprint((unsigned char)c)
60		|| (c == '\0')
61		|| strchr("\a\b\t\n\v\f\r", c));
62}
63
64static void write_propval_string(FILE *f, struct data val)
65{
66	const char *str = val.val;
67	int i;
68	struct marker *m = val.markers;
69
70	assert(str[val.len-1] == '\0');
71
72	while (m && (m->offset == 0)) {
73		if (m->type == LABEL)
74			fprintf(f, "%s: ", m->ref);
75		m = m->next;
76	}
77	fprintf(f, "\"");
78
79	for (i = 0; i < (val.len-1); i++) {
80		char c = str[i];
81
82		switch (c) {
83		case '\a':
84			fprintf(f, "\\a");
85			break;
86		case '\b':
87			fprintf(f, "\\b");
88			break;
89		case '\t':
90			fprintf(f, "\\t");
91			break;
92		case '\n':
93			fprintf(f, "\\n");
94			break;
95		case '\v':
96			fprintf(f, "\\v");
97			break;
98		case '\f':
99			fprintf(f, "\\f");
100			break;
101		case '\r':
102			fprintf(f, "\\r");
103			break;
104		case '\\':
105			fprintf(f, "\\\\");
106			break;
107		case '\"':
108			fprintf(f, "\\\"");
109			break;
110		case '\0':
111			fprintf(f, "\", ");
112			while (m && (m->offset <= (i + 1))) {
113				if (m->type == LABEL) {
114					assert(m->offset == (i+1));
115					fprintf(f, "%s: ", m->ref);
116				}
117				m = m->next;
118			}
119			fprintf(f, "\"");
120			break;
121		default:
122			if (isprint((unsigned char)c))
123				fprintf(f, "%c", c);
124			else
125				fprintf(f, "\\x%02hhx", c);
126		}
127	}
128	fprintf(f, "\"");
129
130	/* Wrap up any labels at the end of the value */
131	for_each_marker_of_type(m, LABEL) {
132		assert (m->offset == val.len);
133		fprintf(f, " %s:", m->ref);
134	}
135}
136
137static void write_propval_cells(FILE *f, struct data val)
138{
139	void *propend = val.val + val.len;
140	fdt32_t *cp = (fdt32_t *)val.val;
141	struct marker *m = val.markers;
142
143	fprintf(f, "<");
144	for (;;) {
145		while (m && (m->offset <= ((char *)cp - val.val))) {
146			if (m->type == LABEL) {
147				assert(m->offset == ((char *)cp - val.val));
148				fprintf(f, "%s: ", m->ref);
149			}
150			m = m->next;
151		}
152
153		fprintf(f, "0x%x", fdt32_to_cpu(*cp++));
154		if ((void *)cp >= propend)
155			break;
156		fprintf(f, " ");
157	}
158
159	/* Wrap up any labels at the end of the value */
160	for_each_marker_of_type(m, LABEL) {
161		assert (m->offset == val.len);
162		fprintf(f, " %s:", m->ref);
163	}
164	fprintf(f, ">");
165}
166
167static void write_propval_bytes(FILE *f, struct data val)
168{
169	void *propend = val.val + val.len;
170	const char *bp = val.val;
171	struct marker *m = val.markers;
172
173	fprintf(f, "[");
174	for (;;) {
175		while (m && (m->offset == (bp-val.val))) {
176			if (m->type == LABEL)
177				fprintf(f, "%s: ", m->ref);
178			m = m->next;
179		}
180
181		fprintf(f, "%02hhx", (unsigned char)(*bp++));
182		if ((const void *)bp >= propend)
183			break;
184		fprintf(f, " ");
185	}
186
187	/* Wrap up any labels at the end of the value */
188	for_each_marker_of_type(m, LABEL) {
189		assert (m->offset == val.len);
190		fprintf(f, " %s:", m->ref);
191	}
192	fprintf(f, "]");
193}
194
195static void write_propval(FILE *f, struct property *prop)
196{
197	int len = prop->val.len;
198	const char *p = prop->val.val;
199	struct marker *m = prop->val.markers;
200	int nnotstring = 0, nnul = 0;
201	int nnotstringlbl = 0, nnotcelllbl = 0;
202	int i;
203
204	if (len == 0) {
205		fprintf(f, ";\n");
206		return;
207	}
208
209	for (i = 0; i < len; i++) {
210		if (! isstring(p[i]))
211			nnotstring++;
212		if (p[i] == '\0')
213			nnul++;
214	}
215
216	for_each_marker_of_type(m, LABEL) {
217		if ((m->offset > 0) && (prop->val.val[m->offset - 1] != '\0'))
218			nnotstringlbl++;
219		if ((m->offset % sizeof(cell_t)) != 0)
220			nnotcelllbl++;
221	}
222
223	fprintf(f, " = ");
224	if ((p[len-1] == '\0') && (nnotstring == 0) && (nnul < (len-nnul))
225	    && (nnotstringlbl == 0)) {
226		write_propval_string(f, prop->val);
227	} else if (((len % sizeof(cell_t)) == 0) && (nnotcelllbl == 0)) {
228		write_propval_cells(f, prop->val);
229	} else {
230		write_propval_bytes(f, prop->val);
231	}
232
233	fprintf(f, ";\n");
234}
235
236static void write_tree_source_node(FILE *f, struct node *tree, int level)
237{
238	struct property *prop;
239	struct node *child;
240	struct label *l;
241
242	write_prefix(f, level);
243	for_each_label(tree->labels, l)
244		fprintf(f, "%s: ", l->label);
245	if (tree->name && (*tree->name))
246		fprintf(f, "%s {\n", tree->name);
247	else
248		fprintf(f, "/ {\n");
249
250	for_each_property(tree, prop) {
251		write_prefix(f, level+1);
252		for_each_label(prop->labels, l)
253			fprintf(f, "%s: ", l->label);
254		fprintf(f, "%s", prop->name);
255		write_propval(f, prop);
256	}
257	for_each_child(tree, child) {
258		fprintf(f, "\n");
259		write_tree_source_node(f, child, level+1);
260	}
261	write_prefix(f, level);
262	fprintf(f, "};\n");
263}
264
265
266void dt_to_source(FILE *f, struct dt_info *dti)
267{
268	struct reserve_info *re;
269
270	fprintf(f, "/dts-v1/;\n\n");
271
272	for (re = dti->reservelist; re; re = re->next) {
273		struct label *l;
274
275		for_each_label(re->labels, l)
276			fprintf(f, "%s: ", l->label);
277		fprintf(f, "/memreserve/\t0x%016llx 0x%016llx;\n",
278			(unsigned long long)re->address,
279			(unsigned long long)re->size);
280	}
281
282	write_tree_source_node(f, dti->dt, 0);
283}
284