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1 | #include <stdio.h> |
2 | #include <stdlib.h> |
3 | #include <string.h> |
4 | |
5 | #include "my_assert.h" |
57e4efe9 |
6 | #include "my_str.h" |
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7 | |
8 | struct sl_item { |
9 | char *name; |
368deb23 |
10 | unsigned int callsites:1; |
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11 | unsigned int found:1; |
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12 | }; |
13 | |
14 | static int cmp_sym(const void *p1_, const void *p2_) |
15 | { |
16 | const struct sl_item *p1 = p1_, *p2 = p2_; |
17 | const char *s1 = p1->name, *s2 = p2->name; |
18 | int i; |
19 | |
20 | for (i = 0; ; i++) { |
0c5547d1 |
21 | if ((s1[i] | s2[i]) == 0) |
22 | break; |
23 | |
ede51255 |
24 | if (s1[i] == s2[i]) |
25 | continue; |
26 | |
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27 | if (s1[i] == 0 && s2[i] == '@') |
28 | break; |
29 | if (s1[i] == '@' && s2[i] == 0) |
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30 | break; |
31 | |
32 | return s1[i] - s2[i]; |
33 | } |
34 | |
35 | return 0; |
36 | } |
37 | |
38 | static int cmp_sym_sort(const void *p1_, const void *p2_) |
39 | { |
40 | const struct sl_item *p1 = p1_, *p2 = p2_; |
41 | const char *s1 = p1->name, *s2 = p2->name; |
42 | int ret; |
43 | |
44 | ret = cmp_sym(p1_, p2_); |
45 | if (ret == 0) { |
46 | printf("%s: dupe sym: '%s' '%s'\n", __func__, s1, s2); |
47 | exit(1); |
48 | } |
49 | return ret; |
50 | } |
51 | |
368deb23 |
52 | void read_list(struct sl_item **sl_in, int *cnt, int *alloc, |
53 | FILE *f, int callsites) |
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54 | { |
55 | struct sl_item *sl = *sl_in; |
56 | int c = *cnt; |
57 | char line[256]; |
58 | char word[256]; |
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59 | |
60 | while (fgets(line, sizeof(line), f) != NULL) { |
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61 | next_word(word, sizeof(word), line); |
62 | if (word[0] == 0 || word[0] == ';' || word[0] == '#') |
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63 | continue; |
64 | |
65 | sl[c].name = strdup(word); |
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66 | sl[c].callsites = callsites; |
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67 | sl[c].found = 0; |
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68 | c++; |
69 | |
70 | if (c >= *alloc) { |
71 | *alloc *= 2; |
72 | sl = realloc(sl, *alloc * sizeof(sl[0])); |
73 | my_assert_not(sl, NULL); |
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74 | memset(sl + c, 0, (*alloc - c) * sizeof(sl[0])); |
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75 | } |
76 | } |
77 | |
78 | *sl_in = sl; |
79 | *cnt = c; |
80 | } |
81 | |
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82 | const char *sym_use(const struct sl_item *sym) |
83 | { |
84 | static char buf[256+3]; |
85 | int ret; |
86 | |
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87 | ret = snprintf(buf, sizeof(buf), "rm_%s", sym->name); |
8022df01 |
88 | if (ret >= sizeof(buf)) { |
89 | printf("truncation detected: '%s'\n", buf); |
90 | exit(1); |
91 | } |
92 | |
93 | return buf; |
94 | } |
95 | |
28023f83 |
96 | #define IS(w, y) !strcasecmp(w, y) |
97 | #define IS_OR2(w, x, y) (IS(w, x) || IS(w, y)) |
98 | #define IS_OR3(w, x, y, z) (IS(w, x) || IS(w, y) || IS(w, z)) |
99 | |
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100 | int main(int argc, char *argv[]) |
101 | { |
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102 | struct sl_item *symlist, *sym, ssym = { NULL, }; |
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103 | int patch_callsites = 0; |
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104 | FILE *fout, *fin, *f; |
105 | int symlist_alloc; |
106 | int symlist_cnt; |
107 | char line[256]; |
108 | char word[256]; |
109 | char word2[256]; |
110 | char word3[256]; |
111 | char word4[256]; |
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112 | char word5[256]; |
113 | char word6[256]; |
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114 | char *p; |
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115 | int i; |
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116 | |
368deb23 |
117 | if (argc < 4) { |
118 | // -c - patch callsites |
119 | printf("usage:\n%s <asmf_out> <asmf_in> [[-c] <listf>]*>\n", |
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120 | argv[0]); |
121 | return 1; |
122 | } |
123 | |
124 | symlist_alloc = 16; |
125 | symlist_cnt = 0; |
8022df01 |
126 | symlist = calloc(symlist_alloc, sizeof(symlist[0])); |
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127 | my_assert_not(symlist, NULL); |
128 | |
368deb23 |
129 | for (i = 3; i < argc; i++) { |
0c5547d1 |
130 | if (strcmp(argv[i], "-c") == 0) { |
368deb23 |
131 | patch_callsites = 1; |
132 | continue; |
133 | } |
134 | |
135 | f = fopen(argv[i], "r"); |
136 | my_assert_not(f, NULL); |
137 | read_list(&symlist, &symlist_cnt, &symlist_alloc, |
138 | f, patch_callsites); |
139 | fclose(f); |
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140 | |
368deb23 |
141 | patch_callsites = 0; |
142 | } |
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143 | |
144 | qsort(symlist, symlist_cnt, sizeof(symlist[0]), cmp_sym_sort); |
145 | |
8022df01 |
146 | #if 0 |
147 | printf("symlist:\n"); |
148 | for (i = 0; i < symlist_cnt; i++) |
368deb23 |
149 | printf("%d '%s'\n", symlist[i].callsites, symlist[i].name); |
8022df01 |
150 | #endif |
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151 | |
152 | fin = fopen(argv[2], "r"); |
153 | my_assert_not(fin, NULL); |
154 | |
155 | fout = fopen(argv[1], "w"); |
156 | my_assert_not(fout, NULL); |
157 | |
158 | while (fgets(line, sizeof(line), fin)) |
159 | { |
160 | p = sskip(line); |
161 | if (*p == 0 || *p == ';') |
162 | goto pass; |
163 | |
164 | p = sskip(next_word(word, sizeof(word), p)); |
165 | if (*p == 0 || *p == ';') |
166 | goto pass; // need at least 2 words |
167 | |
168 | p = next_word(word2, sizeof(word2), p); |
169 | |
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170 | if (IS_OR2(word2, "proc", "endp")) { |
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171 | ssym.name = word; |
172 | sym = bsearch(&ssym, symlist, symlist_cnt, |
173 | sizeof(symlist[0]), cmp_sym); |
174 | if (sym != NULL) { |
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175 | sym->found = 1; |
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176 | fprintf(fout, "rm_%s\t%s%s", word, word2, p); |
177 | continue; |
178 | } |
179 | } |
180 | |
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181 | if (IS_OR3(word, "call", "jmp", "public")) { |
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182 | ssym.name = word2; |
183 | sym = bsearch(&ssym, symlist, symlist_cnt, |
184 | sizeof(symlist[0]), cmp_sym); |
368deb23 |
185 | if (sym != NULL && sym->callsites) { |
8022df01 |
186 | fprintf(fout, "\t\t%s\t%s%s", word, |
187 | sym_use(sym), p); |
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188 | continue; |
189 | } |
190 | } |
191 | |
192 | p = sskip(p); |
193 | if (*p == 0 || *p == ';') |
194 | goto pass; // need at least 3 words |
195 | |
196 | p = next_word(word3, sizeof(word3), p); |
197 | |
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198 | // dd offset <sym> |
199 | // push offset <sym> |
200 | // jcc short <sym> |
201 | if ( (IS_OR2(word, "dd", "push") && IS(word2, "offset")) |
202 | || (word[0] == 'j' && IS(word2, "short")) ) { |
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203 | ssym.name = word3; |
204 | sym = bsearch(&ssym, symlist, symlist_cnt, |
205 | sizeof(symlist[0]), cmp_sym); |
368deb23 |
206 | if (sym != NULL && sym->callsites) { |
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207 | fprintf(fout, "\t\t%s %s %s%s", |
208 | word, word2, sym_use(sym), p); |
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209 | continue; |
210 | } |
211 | } |
212 | |
213 | p = sskip(p); |
214 | if (*p == 0 || *p == ';') |
215 | goto pass; // need at least 4 words |
216 | |
217 | p = next_word(word4, sizeof(word4), p); |
218 | |
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219 | // <name> dd offset <sym> |
220 | if (IS(word2, "dd") && IS(word3, "offset")) { |
ede51255 |
221 | ssym.name = word4; |
222 | sym = bsearch(&ssym, symlist, symlist_cnt, |
223 | sizeof(symlist[0]), cmp_sym); |
368deb23 |
224 | if (sym != NULL && sym->callsites) { |
8022df01 |
225 | fprintf(fout, "%s\tdd offset %s%s", word, |
226 | sym_use(sym), p); |
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227 | continue; |
228 | } |
229 | } |
230 | |
28023f83 |
231 | // mov <something>, offset <sym> |
232 | // jcc <some> ptr <sym> |
233 | if ( (IS(word, "mov") && IS(word3, "offset")) |
234 | || (word[0] == 'j' && IS(word3, "ptr")) ) { |
235 | ssym.name = word4; |
236 | sym = bsearch(&ssym, symlist, symlist_cnt, |
237 | sizeof(symlist[0]), cmp_sym); |
238 | if (sym != NULL && sym->callsites) { |
239 | fprintf(fout, "\t\t%s\t%s %s %s%s", |
240 | word, word2, word3, |
241 | sym_use(sym), p); |
242 | continue; |
243 | } |
244 | } |
245 | |
246 | p = sskip(p); |
247 | if (*p == 0 || *p == ';') |
248 | goto pass; // need at least 5 words |
249 | |
250 | p = next_word(word5, sizeof(word5), p); |
251 | |
252 | p = sskip(p); |
253 | if (*p == 0 || *p == ';') |
254 | goto pass; // need at least 6 words |
255 | |
256 | p = next_word(word6, sizeof(word6), p); |
257 | |
258 | // <op> dword ptr <something>, offset <sym> |
259 | if ( IS(word2, "dword") && IS(word3, "ptr") |
260 | && IS(word5, "offset") ) { |
261 | ssym.name = word6; |
262 | sym = bsearch(&ssym, symlist, symlist_cnt, |
263 | sizeof(symlist[0]), cmp_sym); |
264 | if (sym != NULL && sym->callsites) { |
265 | fprintf(fout, "\t\t%s\tdword ptr %s offset %s%s", |
266 | word, word4, sym_use(sym), p); |
267 | continue; |
268 | } |
269 | } |
270 | |
ede51255 |
271 | pass: |
272 | fwrite(line, 1, strlen(line), fout); |
273 | } |
274 | |
8022df01 |
275 | for (i = 0; i < symlist_cnt; i++) { |
276 | if (!symlist[i].found) |
277 | printf("warning: sym '%s' not found\n", symlist[i].name); |
278 | } |
279 | |
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280 | fclose(fin); |
281 | fclose(fout); |
282 | |
283 | return 0; |
284 | } |