c36e914d |
1 | |
39b168b8 |
2 | struct parsed_proto; |
3 | |
4 | struct parsed_proto_arg { |
5 | char *reg; |
6 | const char *type; |
7 | struct parsed_proto *fptr; |
8 | void *datap; |
9 | }; |
10 | |
c36e914d |
11 | struct parsed_proto { |
39b168b8 |
12 | char name[256]; |
c36e914d |
13 | const char *ret_type; |
39b168b8 |
14 | struct parsed_proto_arg arg[16]; |
c36e914d |
15 | int argc; |
16 | int argc_stack; |
17 | int argc_reg; |
39b168b8 |
18 | unsigned int is_stdcall:1; |
19 | unsigned int is_fptr:1; |
c36e914d |
20 | }; |
21 | |
22 | static const char *hdrfn; |
23 | static int hdrfline = 0; |
24 | |
39b168b8 |
25 | static int find_protostr(char *dst, size_t dlen, FILE *fhdr, |
26 | const char *fname, const char *sym_) |
c36e914d |
27 | { |
39b168b8 |
28 | const char *sym = sym_; |
29 | FILE *finc; |
30 | int symlen; |
c36e914d |
31 | int line = 0; |
39b168b8 |
32 | int ret; |
c36e914d |
33 | char *p; |
34 | |
39b168b8 |
35 | if (sym[0] == '_' && strncmp(fname, "stdc", 4) == 0) |
36 | sym++; |
37 | symlen = strlen(sym); |
38 | |
c36e914d |
39 | rewind(fhdr); |
40 | |
41 | while (fgets(dst, dlen, fhdr)) |
42 | { |
43 | line++; |
39b168b8 |
44 | if (strncmp(dst, "#include ", 9) == 0) { |
45 | p = strpbrk(dst + 9, "\r\n "); |
46 | if (p != NULL) |
47 | *p = 0; |
48 | |
49 | finc = fopen(dst + 9, "r"); |
50 | if (finc == NULL) { |
51 | printf("%s:%d: can't open '%s'\n", |
52 | fname, line, dst + 9); |
53 | continue; |
54 | } |
55 | ret = find_protostr(dst, dlen, finc, |
56 | dst + 9, sym_); |
57 | fclose(finc); |
58 | if (ret == 0) |
59 | break; |
60 | continue; |
61 | } |
62 | |
63 | p = strstr(dst, sym); |
64 | if (p != NULL |
65 | && (my_isblank(p[symlen]) || my_issep(p[symlen]))) |
c36e914d |
66 | break; |
67 | } |
68 | hdrfline = line; |
69 | |
70 | if (feof(fhdr)) |
71 | return -1; |
72 | |
73 | p = dst + strlen(dst); |
74 | for (p--; p > dst && my_isblank(*p); --p) |
75 | *p = 0; |
76 | |
77 | return 0; |
78 | } |
79 | |
80 | static int get_regparm(char *dst, size_t dlen, char *p) |
81 | { |
82 | int i, o; |
83 | |
84 | if (*p != '<') |
85 | return 0; |
86 | |
87 | for (o = 0, i = 1; o < dlen; i++) { |
88 | if (p[i] == 0) |
89 | return 0; |
90 | if (p[i] == '>') |
91 | break; |
92 | dst[o++] = p[i]; |
93 | } |
94 | dst[o] = 0; |
95 | return i + 1; |
96 | } |
97 | |
98 | // hmh.. |
99 | static const char *known_types[] = { |
100 | "const void *", |
101 | "void *", |
102 | "char *", |
103 | "FILE *", |
f3d05b09 |
104 | "int *", |
c36e914d |
105 | "unsigned __int8", |
106 | "unsigned __int16", |
107 | "unsigned int", |
108 | "signed int", |
109 | "char", |
110 | "__int8", |
111 | "__int16", |
112 | "int", |
113 | "bool", |
114 | "void", |
115 | "BYTE", |
116 | "WORD", |
117 | "DWORD", |
91977a1c |
118 | "_DWORD", |
c36e914d |
119 | "HMODULE", |
120 | "HANDLE", |
121 | "HWND", |
122 | "LPCSTR", |
123 | "size_t", |
124 | }; |
125 | |
39b168b8 |
126 | static int typecmp(const char *n, const char *t) |
127 | { |
128 | for (; *t != 0; n++, t++) { |
129 | while (n[0] == ' ' && (n[1] == ' ' || n[1] == '*')) |
130 | n++; |
131 | while (t[0] == ' ' && (t[1] == ' ' || t[1] == '*')) |
132 | t++; |
133 | if (*n != *t) |
134 | return *n - *t; |
135 | } |
136 | |
137 | return 0; |
138 | } |
139 | |
c36e914d |
140 | static const char *check_type(const char *name) |
141 | { |
39b168b8 |
142 | int i; |
c36e914d |
143 | |
144 | for (i = 0; i < ARRAY_SIZE(known_types); i++) { |
39b168b8 |
145 | if (typecmp(name, known_types[i]) == 0) |
c36e914d |
146 | return known_types[i]; |
147 | } |
148 | |
149 | return NULL; |
150 | } |
151 | |
152 | /* args are always expanded to 32bit */ |
153 | static const char *map_reg(const char *reg) |
154 | { |
155 | const char *regs_f[] = { "eax", "ebx", "ecx", "edx", "esi", "edi" }; |
156 | const char *regs_w[] = { "ax", "bx", "cx", "dx", "si", "di" }; |
157 | const char *regs_b[] = { "al", "bl", "cl", "dl" }; |
158 | int i; |
159 | |
160 | for (i = 0; i < ARRAY_SIZE(regs_w); i++) |
161 | if (IS(reg, regs_w[i])) |
162 | return regs_f[i]; |
163 | |
164 | for (i = 0; i < ARRAY_SIZE(regs_b); i++) |
165 | if (IS(reg, regs_b[i])) |
166 | return regs_f[i]; |
167 | |
168 | return reg; |
169 | } |
170 | |
171 | static int parse_protostr(char *protostr, struct parsed_proto *pp) |
172 | { |
39b168b8 |
173 | struct parsed_proto_arg *arg; |
c36e914d |
174 | char regparm[16]; |
175 | char buf[256]; |
176 | char cconv[32]; |
177 | const char *kt; |
178 | int xarg = 0; |
39b168b8 |
179 | char *p, *p1; |
c36e914d |
180 | int ret; |
c36e914d |
181 | int i; |
182 | |
183 | p = protostr; |
184 | if (p[0] == '/' && p[1] == '/') { |
185 | //printf("warning: decl for sym '%s' is commented out\n", sym); |
186 | p = sskip(p + 2); |
187 | } |
188 | |
189 | kt = check_type(p); |
190 | if (kt == NULL) { |
191 | printf("%s:%d:%ld: unhandled return in '%s'\n", |
192 | hdrfn, hdrfline, (p - protostr) + 1, protostr); |
39b168b8 |
193 | return -1; |
c36e914d |
194 | } |
195 | pp->ret_type = kt; |
196 | p += strlen(kt); |
197 | p = sskip(p); |
198 | |
39b168b8 |
199 | if (*p == '(') { |
200 | pp->is_fptr = 1; |
201 | p = sskip(p + 1); |
202 | } |
203 | |
c36e914d |
204 | p = next_word(cconv, sizeof(cconv), p); |
205 | p = sskip(p); |
206 | if (cconv[0] == 0) { |
207 | printf("%s:%d:%ld: cconv missing\n", |
208 | hdrfn, hdrfline, (p - protostr) + 1); |
39b168b8 |
209 | return -1; |
c36e914d |
210 | } |
211 | if (IS(cconv, "__cdecl")) |
212 | pp->is_stdcall = 0; |
213 | else if (IS(cconv, "__stdcall")) |
214 | pp->is_stdcall = 1; |
215 | else if (IS(cconv, "__fastcall")) |
216 | pp->is_stdcall = 1; |
217 | else if (IS(cconv, "__thiscall")) |
218 | pp->is_stdcall = 1; |
219 | else if (IS(cconv, "__userpurge")) |
220 | pp->is_stdcall = 1; // in all cases seen.. |
221 | else if (IS(cconv, "__usercall")) |
222 | pp->is_stdcall = 0; // ..or is it? |
223 | else { |
224 | printf("%s:%d:%ld: unhandled cconv: '%s'\n", |
225 | hdrfn, hdrfline, (p - protostr) + 1, cconv); |
39b168b8 |
226 | return -1; |
227 | } |
228 | |
229 | if (pp->is_fptr) { |
230 | if (*p != '*') { |
231 | printf("%s:%d:%ld: '*' expected\n", |
232 | hdrfn, hdrfline, (p - protostr) + 1); |
233 | return -1; |
234 | } |
235 | p = sskip(p + 1); |
c36e914d |
236 | } |
237 | |
238 | p = next_idt(buf, sizeof(buf), p); |
239 | p = sskip(p); |
240 | if (buf[0] == 0) { |
241 | printf("%s:%d:%ld: func name missing\n", |
39b168b8 |
242 | hdrfn, hdrfline, (p - protostr) + 1); |
243 | return -1; |
c36e914d |
244 | } |
39b168b8 |
245 | strcpy(pp->name, buf); |
c36e914d |
246 | |
247 | ret = get_regparm(regparm, sizeof(regparm), p); |
248 | if (ret > 0) { |
249 | if (!IS(regparm, "eax") && !IS(regparm, "ax") |
250 | && !IS(regparm, "al")) |
251 | { |
252 | printf("%s:%d:%ld: bad regparm: %s\n", |
253 | hdrfn, hdrfline, (p - protostr) + 1, regparm); |
39b168b8 |
254 | return -1; |
c36e914d |
255 | } |
256 | p += ret; |
257 | p = sskip(p); |
258 | } |
259 | |
39b168b8 |
260 | if (pp->is_fptr) { |
261 | if (*p != ')') { |
262 | printf("%s:%d:%ld: ')' expected\n", |
263 | hdrfn, hdrfline, (p - protostr) + 1); |
264 | return -1; |
265 | } |
266 | p = sskip(p + 1); |
267 | } |
268 | |
c36e914d |
269 | if (*p != '(') { |
270 | printf("%s:%d:%ld: '(' expected, got '%c'\n", |
271 | hdrfn, hdrfline, (p - protostr) + 1, *p); |
39b168b8 |
272 | return -1; |
c36e914d |
273 | } |
274 | p++; |
275 | |
39b168b8 |
276 | // check for x(void) |
277 | p = sskip(p); |
278 | if (strncmp(p, "void", 4) == 0 && *sskip(p + 4) == ')') |
279 | p += 4; |
280 | |
c36e914d |
281 | while (1) { |
282 | p = sskip(p); |
39b168b8 |
283 | if (*p == ')') { |
284 | p++; |
c36e914d |
285 | break; |
39b168b8 |
286 | } |
c36e914d |
287 | if (*p == ',') |
288 | p = sskip(p + 1); |
289 | |
39b168b8 |
290 | arg = &pp->arg[xarg]; |
c36e914d |
291 | xarg++; |
292 | |
39b168b8 |
293 | p1 = p; |
c36e914d |
294 | kt = check_type(p); |
295 | if (kt == NULL) { |
296 | printf("%s:%d:%ld: unhandled type for arg%d\n", |
297 | hdrfn, hdrfline, (p - protostr) + 1, xarg); |
39b168b8 |
298 | return -1; |
c36e914d |
299 | } |
39b168b8 |
300 | arg->type = kt; |
c36e914d |
301 | p += strlen(kt); |
302 | p = sskip(p); |
303 | |
39b168b8 |
304 | if (*p == '(') { |
305 | // func ptr |
306 | arg->fptr = calloc(1, sizeof(*arg->fptr)); |
307 | ret = parse_protostr(p1, arg->fptr); |
308 | if (ret < 0) { |
309 | printf("%s:%d:%ld: funcarg parse failed\n", |
310 | hdrfn, hdrfline, p1 - protostr); |
311 | return -1; |
312 | } |
313 | // we'll treat it as void * for non-calls |
314 | arg->type = "void *"; |
315 | |
316 | p = p1 + ret; |
317 | } |
318 | |
c36e914d |
319 | p = next_idt(buf, sizeof(buf), p); |
320 | p = sskip(p); |
321 | #if 0 |
322 | if (buf[0] == 0) { |
323 | printf("%s:%d:%ld: idt missing for arg%d\n", |
324 | hdrfn, hdrfline, (p - protostr) + 1, xarg); |
39b168b8 |
325 | return -1; |
c36e914d |
326 | } |
327 | #endif |
39b168b8 |
328 | arg->reg = NULL; |
c36e914d |
329 | |
330 | ret = get_regparm(regparm, sizeof(regparm), p); |
331 | if (ret > 0) { |
332 | p += ret; |
333 | p = sskip(p); |
334 | |
39b168b8 |
335 | arg->reg = strdup(map_reg(regparm)); |
c36e914d |
336 | } |
337 | } |
338 | |
339 | if (xarg > 0 && (IS(cconv, "__fastcall") || IS(cconv, "__thiscall"))) { |
340 | if (pp->arg[0].reg != NULL) { |
341 | printf("%s:%d: %s with arg1 spec %s?\n", |
342 | hdrfn, hdrfline, cconv, pp->arg[0].reg); |
343 | } |
344 | pp->arg[0].reg = strdup("ecx"); |
345 | } |
346 | |
347 | if (xarg > 1 && IS(cconv, "__fastcall")) { |
348 | if (pp->arg[1].reg != NULL) { |
349 | printf("%s:%d: %s with arg2 spec %s?\n", |
350 | hdrfn, hdrfline, cconv, pp->arg[1].reg); |
351 | } |
352 | pp->arg[1].reg = strdup("edx"); |
353 | } |
354 | |
355 | pp->argc = xarg; |
356 | |
357 | for (i = 0; i < pp->argc; i++) { |
358 | if (pp->arg[i].reg == NULL) |
359 | pp->argc_stack++; |
360 | else |
361 | pp->argc_reg++; |
362 | } |
363 | |
39b168b8 |
364 | return p - protostr; |
c36e914d |
365 | } |
366 | |
367 | static int proto_parse(FILE *fhdr, const char *sym, struct parsed_proto *pp) |
368 | { |
369 | char protostr[256]; |
370 | int ret; |
371 | |
372 | memset(pp, 0, sizeof(*pp)); |
373 | |
39b168b8 |
374 | ret = find_protostr(protostr, sizeof(protostr), fhdr, hdrfn, sym); |
c36e914d |
375 | if (ret != 0) { |
376 | printf("%s: sym '%s' is missing\n", hdrfn, sym); |
377 | return ret; |
378 | } |
379 | |
39b168b8 |
380 | return parse_protostr(protostr, pp) < 0 ? -1 : 0; |
c36e914d |
381 | } |
382 | |
383 | static void proto_release(struct parsed_proto *pp) |
384 | { |
385 | int i; |
386 | |
387 | for (i = 0; i < pp->argc; i++) { |
39b168b8 |
388 | if (pp->arg[i].reg != NULL) |
c36e914d |
389 | free(pp->arg[i].reg); |
39b168b8 |
390 | if (pp->arg[i].fptr != NULL) |
391 | free(pp->arg[i].fptr); |
c36e914d |
392 | } |
393 | } |