ede51255 |
1 | #include <stdio.h> |
2 | #include <stdlib.h> |
3 | #include <string.h> |
4 | |
5 | #include "my_assert.h" |
6 | |
7 | static int my_isblank(char c) |
8 | { |
9 | return c == '\t' || c == ' ' || c == '\r' || c == '\n'; |
10 | } |
11 | |
12 | static char *sskip(char *s) |
13 | { |
14 | while (my_isblank(*s)) |
15 | s++; |
16 | |
17 | return s; |
18 | } |
19 | |
20 | static char *next_word(char *w, size_t wsize, char *s) |
21 | { |
22 | size_t i; |
23 | |
24 | s = sskip(s); |
25 | |
26 | for (i = 0; i < wsize - 1; i++) { |
27 | if (*s == 0 || my_isblank(s[i])) |
28 | break; |
29 | w[i] = s[i]; |
30 | } |
31 | w[i] = 0; |
32 | |
33 | if (*s != 0 && !my_isblank(s[i])) |
34 | printf("warning: '%s' truncated\n", w); |
35 | |
36 | return s + i; |
37 | } |
38 | |
39 | struct sl_item { |
40 | char *name; |
368deb23 |
41 | unsigned int callsites:1; |
8022df01 |
42 | unsigned int found:1; |
ede51255 |
43 | }; |
44 | |
45 | static int cmp_sym(const void *p1_, const void *p2_) |
46 | { |
47 | const struct sl_item *p1 = p1_, *p2 = p2_; |
48 | const char *s1 = p1->name, *s2 = p2->name; |
49 | int i; |
50 | |
51 | for (i = 0; ; i++) { |
0c5547d1 |
52 | if ((s1[i] | s2[i]) == 0) |
53 | break; |
54 | |
ede51255 |
55 | if (s1[i] == s2[i]) |
56 | continue; |
57 | |
0c5547d1 |
58 | if (s1[i] == 0 && s2[i] == '@') |
59 | break; |
60 | if (s1[i] == '@' && s2[i] == 0) |
ede51255 |
61 | break; |
62 | |
63 | return s1[i] - s2[i]; |
64 | } |
65 | |
66 | return 0; |
67 | } |
68 | |
69 | static int cmp_sym_sort(const void *p1_, const void *p2_) |
70 | { |
71 | const struct sl_item *p1 = p1_, *p2 = p2_; |
72 | const char *s1 = p1->name, *s2 = p2->name; |
73 | int ret; |
74 | |
75 | ret = cmp_sym(p1_, p2_); |
76 | if (ret == 0) { |
77 | printf("%s: dupe sym: '%s' '%s'\n", __func__, s1, s2); |
78 | exit(1); |
79 | } |
80 | return ret; |
81 | } |
82 | |
368deb23 |
83 | void read_list(struct sl_item **sl_in, int *cnt, int *alloc, |
84 | FILE *f, int callsites) |
ede51255 |
85 | { |
86 | struct sl_item *sl = *sl_in; |
87 | int c = *cnt; |
88 | char line[256]; |
89 | char word[256]; |
ede51255 |
90 | |
91 | while (fgets(line, sizeof(line), f) != NULL) { |
0c5547d1 |
92 | next_word(word, sizeof(word), line); |
93 | if (word[0] == 0 || word[0] == ';' || word[0] == '#') |
ede51255 |
94 | continue; |
95 | |
96 | sl[c].name = strdup(word); |
368deb23 |
97 | sl[c].callsites = callsites; |
8022df01 |
98 | sl[c].found = 0; |
ede51255 |
99 | c++; |
100 | |
101 | if (c >= *alloc) { |
102 | *alloc *= 2; |
103 | sl = realloc(sl, *alloc * sizeof(sl[0])); |
104 | my_assert_not(sl, NULL); |
8022df01 |
105 | memset(sl + c, 0, (*alloc - c) * sizeof(sl[0])); |
ede51255 |
106 | } |
107 | } |
108 | |
109 | *sl_in = sl; |
110 | *cnt = c; |
111 | } |
112 | |
8022df01 |
113 | const char *sym_use(const struct sl_item *sym) |
114 | { |
115 | static char buf[256+3]; |
116 | int ret; |
117 | |
0c5547d1 |
118 | ret = snprintf(buf, sizeof(buf), "rm_%s", sym->name); |
8022df01 |
119 | if (ret >= sizeof(buf)) { |
120 | printf("truncation detected: '%s'\n", buf); |
121 | exit(1); |
122 | } |
123 | |
124 | return buf; |
125 | } |
126 | |
28023f83 |
127 | #define IS(w, y) !strcasecmp(w, y) |
128 | #define IS_OR2(w, x, y) (IS(w, x) || IS(w, y)) |
129 | #define IS_OR3(w, x, y, z) (IS(w, x) || IS(w, y) || IS(w, z)) |
130 | |
ede51255 |
131 | int main(int argc, char *argv[]) |
132 | { |
8022df01 |
133 | struct sl_item *symlist, *sym, ssym = { NULL, }; |
368deb23 |
134 | int patch_callsites = 0; |
ede51255 |
135 | FILE *fout, *fin, *f; |
136 | int symlist_alloc; |
137 | int symlist_cnt; |
138 | char line[256]; |
139 | char word[256]; |
140 | char word2[256]; |
141 | char word3[256]; |
142 | char word4[256]; |
28023f83 |
143 | char word5[256]; |
144 | char word6[256]; |
ede51255 |
145 | char *p; |
8022df01 |
146 | int i; |
ede51255 |
147 | |
368deb23 |
148 | if (argc < 4) { |
149 | // -c - patch callsites |
150 | printf("usage:\n%s <asmf_out> <asmf_in> [[-c] <listf>]*>\n", |
ede51255 |
151 | argv[0]); |
152 | return 1; |
153 | } |
154 | |
155 | symlist_alloc = 16; |
156 | symlist_cnt = 0; |
8022df01 |
157 | symlist = calloc(symlist_alloc, sizeof(symlist[0])); |
ede51255 |
158 | my_assert_not(symlist, NULL); |
159 | |
368deb23 |
160 | for (i = 3; i < argc; i++) { |
0c5547d1 |
161 | if (strcmp(argv[i], "-c") == 0) { |
368deb23 |
162 | patch_callsites = 1; |
163 | continue; |
164 | } |
165 | |
166 | f = fopen(argv[i], "r"); |
167 | my_assert_not(f, NULL); |
168 | read_list(&symlist, &symlist_cnt, &symlist_alloc, |
169 | f, patch_callsites); |
170 | fclose(f); |
ede51255 |
171 | |
368deb23 |
172 | patch_callsites = 0; |
173 | } |
ede51255 |
174 | |
175 | qsort(symlist, symlist_cnt, sizeof(symlist[0]), cmp_sym_sort); |
176 | |
8022df01 |
177 | #if 0 |
178 | printf("symlist:\n"); |
179 | for (i = 0; i < symlist_cnt; i++) |
368deb23 |
180 | printf("%d '%s'\n", symlist[i].callsites, symlist[i].name); |
8022df01 |
181 | #endif |
ede51255 |
182 | |
183 | fin = fopen(argv[2], "r"); |
184 | my_assert_not(fin, NULL); |
185 | |
186 | fout = fopen(argv[1], "w"); |
187 | my_assert_not(fout, NULL); |
188 | |
189 | while (fgets(line, sizeof(line), fin)) |
190 | { |
191 | p = sskip(line); |
192 | if (*p == 0 || *p == ';') |
193 | goto pass; |
194 | |
195 | p = sskip(next_word(word, sizeof(word), p)); |
196 | if (*p == 0 || *p == ';') |
197 | goto pass; // need at least 2 words |
198 | |
199 | p = next_word(word2, sizeof(word2), p); |
200 | |
28023f83 |
201 | if (IS_OR2(word2, "proc", "endp")) { |
ede51255 |
202 | ssym.name = word; |
203 | sym = bsearch(&ssym, symlist, symlist_cnt, |
204 | sizeof(symlist[0]), cmp_sym); |
205 | if (sym != NULL) { |
8022df01 |
206 | sym->found = 1; |
ede51255 |
207 | fprintf(fout, "rm_%s\t%s%s", word, word2, p); |
208 | continue; |
209 | } |
210 | } |
211 | |
28023f83 |
212 | if (IS_OR3(word, "call", "jmp", "public")) { |
ede51255 |
213 | ssym.name = word2; |
214 | sym = bsearch(&ssym, symlist, symlist_cnt, |
215 | sizeof(symlist[0]), cmp_sym); |
368deb23 |
216 | if (sym != NULL && sym->callsites) { |
8022df01 |
217 | fprintf(fout, "\t\t%s\t%s%s", word, |
218 | sym_use(sym), p); |
ede51255 |
219 | continue; |
220 | } |
221 | } |
222 | |
223 | p = sskip(p); |
224 | if (*p == 0 || *p == ';') |
225 | goto pass; // need at least 3 words |
226 | |
227 | p = next_word(word3, sizeof(word3), p); |
228 | |
28023f83 |
229 | // dd offset <sym> |
230 | // push offset <sym> |
231 | // jcc short <sym> |
232 | if ( (IS_OR2(word, "dd", "push") && IS(word2, "offset")) |
233 | || (word[0] == 'j' && IS(word2, "short")) ) { |
ede51255 |
234 | ssym.name = word3; |
235 | sym = bsearch(&ssym, symlist, symlist_cnt, |
236 | sizeof(symlist[0]), cmp_sym); |
368deb23 |
237 | if (sym != NULL && sym->callsites) { |
28023f83 |
238 | fprintf(fout, "\t\t%s %s %s%s", |
239 | word, word2, sym_use(sym), p); |
ede51255 |
240 | continue; |
241 | } |
242 | } |
243 | |
244 | p = sskip(p); |
245 | if (*p == 0 || *p == ';') |
246 | goto pass; // need at least 4 words |
247 | |
248 | p = next_word(word4, sizeof(word4), p); |
249 | |
28023f83 |
250 | // <name> dd offset <sym> |
251 | if (IS(word2, "dd") && IS(word3, "offset")) { |
ede51255 |
252 | ssym.name = word4; |
253 | sym = bsearch(&ssym, symlist, symlist_cnt, |
254 | sizeof(symlist[0]), cmp_sym); |
368deb23 |
255 | if (sym != NULL && sym->callsites) { |
8022df01 |
256 | fprintf(fout, "%s\tdd offset %s%s", word, |
257 | sym_use(sym), p); |
ede51255 |
258 | continue; |
259 | } |
260 | } |
261 | |
28023f83 |
262 | // mov <something>, offset <sym> |
263 | // jcc <some> ptr <sym> |
264 | if ( (IS(word, "mov") && IS(word3, "offset")) |
265 | || (word[0] == 'j' && IS(word3, "ptr")) ) { |
266 | ssym.name = word4; |
267 | sym = bsearch(&ssym, symlist, symlist_cnt, |
268 | sizeof(symlist[0]), cmp_sym); |
269 | if (sym != NULL && sym->callsites) { |
270 | fprintf(fout, "\t\t%s\t%s %s %s%s", |
271 | word, word2, word3, |
272 | sym_use(sym), p); |
273 | continue; |
274 | } |
275 | } |
276 | |
277 | p = sskip(p); |
278 | if (*p == 0 || *p == ';') |
279 | goto pass; // need at least 5 words |
280 | |
281 | p = next_word(word5, sizeof(word5), p); |
282 | |
283 | p = sskip(p); |
284 | if (*p == 0 || *p == ';') |
285 | goto pass; // need at least 6 words |
286 | |
287 | p = next_word(word6, sizeof(word6), p); |
288 | |
289 | // <op> dword ptr <something>, offset <sym> |
290 | if ( IS(word2, "dword") && IS(word3, "ptr") |
291 | && IS(word5, "offset") ) { |
292 | ssym.name = word6; |
293 | sym = bsearch(&ssym, symlist, symlist_cnt, |
294 | sizeof(symlist[0]), cmp_sym); |
295 | if (sym != NULL && sym->callsites) { |
296 | fprintf(fout, "\t\t%s\tdword ptr %s offset %s%s", |
297 | word, word4, sym_use(sym), p); |
298 | continue; |
299 | } |
300 | } |
301 | |
ede51255 |
302 | pass: |
303 | fwrite(line, 1, strlen(line), fout); |
304 | } |
305 | |
8022df01 |
306 | for (i = 0; i < symlist_cnt; i++) { |
307 | if (!symlist[i].found) |
308 | printf("warning: sym '%s' not found\n", symlist[i].name); |
309 | } |
310 | |
ede51255 |
311 | fclose(fin); |
312 | fclose(fout); |
313 | |
314 | return 0; |
315 | } |