499bf01c |
1 | /* |
2 | * GINGE - GINGE Is Not Gp2x Emulator |
b4f4cb40 |
3 | * (C) notaz, 2010-2011,2016 |
499bf01c |
4 | * |
5 | * This work is licensed under the MAME license, see COPYING file for details. |
6 | */ |
7fd42181 |
7 | #include <stdio.h> |
8 | #include <stdlib.h> |
4d045184 |
9 | #include <stdarg.h> |
7fd42181 |
10 | #include <string.h> |
11 | #include <sys/types.h> |
12 | #include <sys/stat.h> |
13 | #include <fcntl.h> |
14 | #include <sys/mman.h> |
15 | #include <unistd.h> |
16 | #include <sys/ioctl.h> |
17 | #include <signal.h> |
18 | #include <termios.h> |
3ef07128 |
19 | #include <errno.h> |
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20 | |
21 | #include "realfuncs.h" |
b4f4cb40 |
22 | #include "syscalls.h" |
23 | #include "llibc.h" |
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24 | #include "header.h" |
25 | |
26 | #if (DBG & 1) |
b4f4cb40 |
27 | #define strace g_printf |
7fd42181 |
28 | #else |
29 | #define strace(...) |
30 | #endif |
31 | |
32 | #define UNUSED __attribute__((unused)) |
33 | |
34 | static const struct dev_fd_t takeover_devs[] = { |
35 | { "/dev/mem", FAKEDEV_MEM }, |
36 | { "/dev/GPIO", FAKEDEV_GPIO }, |
37 | { "/dev/fb0", FAKEDEV_FB0 }, |
38 | { "/dev/fb/0", FAKEDEV_FB0 }, |
39 | { "/dev/fb1", FAKEDEV_FB1 }, |
40 | { "/dev/fb/1", FAKEDEV_FB1 }, |
41 | { "/dev/mmuhack", FAKEDEV_MMUHACK }, |
ac8e92a4 |
42 | { "/dev/tty", FAKEDEV_TTY0 }, |
7fd42181 |
43 | { "/dev/tty0", FAKEDEV_TTY0 }, |
7000b522 |
44 | #ifdef PND |
45 | { "/dev/input/event*", -1 }, // hide for now, may cause dupe events |
46 | #endif |
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47 | }; |
48 | |
b4f4cb40 |
49 | static long w_open_raw(const char *pathname, int flags, mode_t mode) |
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50 | { |
b4f4cb40 |
51 | long ret; |
52 | int i; |
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53 | |
54 | for (i = 0; i < ARRAY_SIZE(takeover_devs); i++) { |
7000b522 |
55 | const char *p, *oname; |
56 | int len; |
57 | |
58 | oname = takeover_devs[i].name; |
59 | p = strchr(oname, '*'); |
60 | if (p != NULL) |
61 | len = p - oname; |
62 | else |
63 | len = strlen(oname) + 1; |
64 | |
65 | if (strncmp(pathname, oname, len) == 0) { |
7fd42181 |
66 | ret = takeover_devs[i].fd; |
67 | break; |
68 | } |
69 | } |
70 | |
71 | if (i == ARRAY_SIZE(takeover_devs)) |
b4f4cb40 |
72 | ret = g_open_raw(pathname, flags, mode); |
7fd42181 |
73 | |
74 | if (ret >= 0) { |
75 | for (i = 0; emu_interesting_fds[i].name != NULL; i++) { |
7000b522 |
76 | struct dev_fd_t *eifd = &emu_interesting_fds[i]; |
77 | if (strcmp(pathname, eifd->name) == 0) { |
78 | eifd->fd = ret; |
79 | if (eifd->open_cb != NULL) |
80 | eifd->open_cb(ret); |
7fd42181 |
81 | break; |
82 | } |
83 | } |
84 | } |
85 | |
b4f4cb40 |
86 | strace("open(%s) = %ld\n", pathname, ret); |
7fd42181 |
87 | return ret; |
88 | } |
89 | |
b4f4cb40 |
90 | static int w_open(const char *pathname, int flags, mode_t mode) |
91 | { |
92 | long ret = w_open_raw(pathname, flags, mode); |
93 | return g_syscall_error(ret); |
94 | } |
95 | |
96 | static long w_mmap_raw(void *addr, size_t length, int prot, int flags, |
97 | int fd, off_t offset) |
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98 | { |
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99 | long ret; |
100 | |
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101 | if (FAKEDEV_MEM <= fd && fd < FAKEDEV_FD_BOUNDARY) |
102 | ret = emu_do_mmap(length, prot, flags, fd, offset); |
103 | else |
b4f4cb40 |
104 | ret = g_mmap2_raw(addr, length, prot, flags, fd, offset >> 12); |
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105 | |
b4f4cb40 |
106 | strace("mmap(%p, %x, %x, %x, %d, %lx) = %lx\n", |
107 | addr, length, prot, flags, fd, (long)offset, ret); |
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108 | return ret; |
109 | } |
b4f4cb40 |
110 | |
111 | static long w_mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset) |
112 | { |
113 | long ret = w_mmap_raw(addr, length, prot, flags, fd, offset); |
114 | return g_syscall_error(ret); |
115 | } |
7fd42181 |
116 | #define w_mmap2 w_mmap |
117 | |
b4f4cb40 |
118 | static long w_munmap_raw(void *addr, size_t length) |
3ef07128 |
119 | { |
b4f4cb40 |
120 | long ret; |
121 | |
3ef07128 |
122 | ret = emu_do_munmap(addr, length); |
123 | if (ret == -EAGAIN) |
b4f4cb40 |
124 | ret = g_munmap_raw(addr, length); |
3ef07128 |
125 | |
b4f4cb40 |
126 | strace("munmap(%p, %x) = %ld\n", addr, length, ret); |
3ef07128 |
127 | return ret; |
128 | } |
129 | |
b4f4cb40 |
130 | static int w_munmap(void *addr, size_t length) |
131 | { |
132 | long ret = w_munmap_raw(addr, length); |
133 | return g_syscall_error(ret); |
134 | } |
135 | |
136 | long w_read_raw(int fd, void *buf, size_t count) |
7fd42181 |
137 | { |
b4f4cb40 |
138 | long ret; |
139 | |
7fd42181 |
140 | if (fd == FAKEDEV_GPIO) |
141 | ret = emu_read_gpiodev(buf, count); |
142 | else |
b4f4cb40 |
143 | ret = g_read_raw(fd, buf, count); |
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144 | |
b4f4cb40 |
145 | //strace("read(%d, %p, %ld) = %ld\n", fd, buf, count, ret); |
7fd42181 |
146 | return ret; |
147 | } |
148 | |
b4f4cb40 |
149 | static ssize_t w_read(int fd, void *buf, size_t count) |
7fd42181 |
150 | { |
b4f4cb40 |
151 | long ret = w_read_raw(fd, buf, count); |
152 | return g_syscall_error(ret); |
153 | } |
154 | |
155 | long w_ioctl_raw(int fd, int request, void *argp) |
156 | { |
157 | long ret; |
7fd42181 |
158 | |
159 | if ((FAKEDEV_MEM <= fd && fd < FAKEDEV_FD_BOUNDARY) || |
160 | fd == emu_interesting_fds[IFD_SOUND].fd) |
161 | ret = emu_do_ioctl(fd, request, argp); |
162 | else |
b4f4cb40 |
163 | ret = g_ioctl_raw(fd, request, argp); |
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164 | |
b4f4cb40 |
165 | strace("ioctl(%d, %08x, %p) = %ld\n", fd, request, argp, ret); |
7fd42181 |
166 | return ret; |
167 | } |
168 | |
b4f4cb40 |
169 | static int w_ioctl(int fd, int request, void *argp) |
170 | { |
171 | long ret = w_ioctl_raw(fd, request, argp); |
172 | return g_syscall_error(ret); |
173 | } |
174 | |
7fd42181 |
175 | static int w_sigaction(int signum, const void *act, void *oldact) |
176 | { |
177 | strace("sigaction(%d, %p, %p) = %d\n", signum, act, oldact, 0); |
178 | return 0; |
179 | } |
180 | |
181 | /* dynamic only */ |
182 | static UNUSED int w_tcgetattr(int fd, struct termios *termios_p) |
183 | { |
184 | int ret; |
185 | if (fd != FAKEDEV_TTY0) |
186 | ret = tcgetattr(fd, termios_p); |
187 | else |
188 | ret = 0; |
189 | |
190 | strace("tcgetattr(%d, %p) = %d\n", fd, termios_p, ret); |
191 | return ret; |
192 | } |
193 | |
194 | static UNUSED int w_tcsetattr(int fd, int optional_actions, |
195 | const struct termios *termios_p) |
196 | { |
197 | int ret; |
198 | if (fd != FAKEDEV_TTY0) |
199 | ret = tcsetattr(fd, optional_actions, termios_p); |
200 | else |
201 | ret = 0; |
202 | |
203 | strace("tcsetattr(%d, %x, %p) = %d\n", fd, optional_actions, termios_p, ret); |
204 | return ret; |
205 | } |
206 | |
207 | static UNUSED FILE *w_fopen(const char *path, const char *mode) |
208 | { |
209 | FILE *ret = emu_do_fopen(path, mode); |
210 | strace("fopen(%s, %s) = %p\n", path, mode, ret); |
211 | return ret; |
212 | } |
213 | |
214 | static UNUSED int w_system(const char *command) |
215 | { |
216 | int ret = emu_do_system(command); |
217 | strace("system(%s) = %d\n", command, ret); |
218 | return ret; |
219 | } |
220 | |
7000b522 |
221 | extern char **environ; |
222 | |
db9191ed |
223 | static UNUSED int w_execl(const char *path, const char *arg, ...) |
224 | { |
225 | // don't allow exec (for now) |
226 | strace("execl(%s, %s, ...) = ?\n", path, arg); |
7000b522 |
227 | exit(1); |
db9191ed |
228 | } |
229 | |
230 | static UNUSED int w_execlp(const char *file, const char *arg, ...) |
231 | { |
232 | strace("execlp(%s, %s, ...) = ?\n", file, arg); |
7000b522 |
233 | exit(1); |
234 | } |
235 | |
236 | static UNUSED int w_execle(const char *path, const char *arg, ...) |
237 | { |
238 | strace("execle(%s, %s, ...) = ?\n", path, arg); |
239 | exit(1); |
240 | } |
241 | |
242 | static UNUSED int w_execv(const char *path, char *const argv[]) |
243 | { |
244 | strace("execv(%s, %p) = ?\n", path, argv); |
245 | return emu_do_execve(path, argv, environ); |
246 | } |
247 | |
248 | static UNUSED int w_execvp(const char *file, char *const argv[]) |
249 | { |
250 | strace("execvp(%s, %p) = ?\n", file, argv); |
251 | return emu_do_execve(file, argv, environ); |
db9191ed |
252 | } |
253 | |
254 | // static note: this can't safely return because of the way it's patched in |
255 | // static note2: can't be used, execve hangs? |
256 | static UNUSED int w_execve(const char *filename, char *const argv[], |
257 | char *const envp[]) |
258 | { |
259 | strace("execve(%s, %p, %p) = ?\n", filename, argv, envp); |
7000b522 |
260 | return emu_do_execve(filename, argv, envp); |
db9191ed |
261 | } |
262 | |
263 | static int w_chdir(const char *path) |
264 | { |
b4f4cb40 |
265 | long ret; |
266 | |
db9191ed |
267 | if (path != NULL && strstr(path, "/usr/gp2x") != NULL) |
268 | ret = 0; |
269 | else |
b4f4cb40 |
270 | ret = g_chdir_raw(path); |
db9191ed |
271 | strace("chdir(%s) = %d\n", path, ret); |
b4f4cb40 |
272 | return g_syscall_error(ret); |
db9191ed |
273 | } |
274 | |
7fd42181 |
275 | #undef open |
276 | #undef fopen |
277 | #undef mmap |
3ef07128 |
278 | #undef munmap |
7fd42181 |
279 | #undef read |
280 | #undef ioctl |
b4f4cb40 |
281 | #undef close |
7fd42181 |
282 | #undef sigaction |
283 | #undef tcgetattr |
284 | #undef tcsetattr |
285 | #undef system |
db9191ed |
286 | #undef execl |
287 | #undef execlp |
7000b522 |
288 | #undef execle |
289 | #undef execv |
290 | #undef execvp |
db9191ed |
291 | #undef execve |
292 | #undef chdir |
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293 | |
294 | #ifdef DL |
295 | |
db9191ed |
296 | #define MAKE_WRAP_SYM_N(sym) \ |
7fd42181 |
297 | /* alias wrap symbols to real names */ \ |
db9191ed |
298 | typeof(sym) sym __attribute__((alias("w_" #sym))) |
299 | |
300 | #define MAKE_WRAP_SYM(sym) \ |
301 | MAKE_WRAP_SYM_N(sym); \ |
7fd42181 |
302 | /* wrapper to real functions, to be set up on load */ \ |
303 | static typeof(sym) *p_real_##sym |
304 | |
4d045184 |
305 | // note: update symver too |
b4f4cb40 |
306 | MAKE_WRAP_SYM_N(open); |
7fd42181 |
307 | MAKE_WRAP_SYM(fopen); |
b4f4cb40 |
308 | MAKE_WRAP_SYM_N(mmap); |
309 | MAKE_WRAP_SYM_N(munmap); |
310 | MAKE_WRAP_SYM_N(read); |
311 | MAKE_WRAP_SYM_N(ioctl); |
7fd42181 |
312 | MAKE_WRAP_SYM(sigaction); |
313 | MAKE_WRAP_SYM(tcgetattr); |
314 | MAKE_WRAP_SYM(tcsetattr); |
315 | MAKE_WRAP_SYM(system); |
db9191ed |
316 | MAKE_WRAP_SYM_N(execl); |
317 | MAKE_WRAP_SYM_N(execlp); |
7000b522 |
318 | MAKE_WRAP_SYM_N(execle); |
319 | MAKE_WRAP_SYM_N(execv); |
320 | MAKE_WRAP_SYM_N(execvp); |
db9191ed |
321 | MAKE_WRAP_SYM(execve); |
b4f4cb40 |
322 | MAKE_WRAP_SYM_N(chdir); |
7fd42181 |
323 | typeof(mmap) mmap2 __attribute__((alias("w_mmap"))); |
324 | |
325 | #define REAL_FUNC_NP(name) \ |
326 | { #name, (void **)&p_real_##name } |
327 | |
328 | static const struct { |
329 | const char *name; |
330 | void **func_ptr; |
331 | } real_funcs_np[] = { |
b4f4cb40 |
332 | //REAL_FUNC_NP(open), |
7fd42181 |
333 | REAL_FUNC_NP(fopen), |
b4f4cb40 |
334 | //REAL_FUNC_NP(mmap), |
335 | //REAL_FUNC_NP(munmap), |
336 | //REAL_FUNC_NP(read), |
337 | //REAL_FUNC_NP(ioctl), |
7fd42181 |
338 | REAL_FUNC_NP(sigaction), |
339 | REAL_FUNC_NP(tcgetattr), |
340 | REAL_FUNC_NP(tcsetattr), |
341 | REAL_FUNC_NP(system), |
db9191ed |
342 | // exec* - skipped |
343 | REAL_FUNC_NP(execve), |
b4f4cb40 |
344 | //REAL_FUNC_NP(chdir), |
7fd42181 |
345 | }; |
346 | |
b4f4cb40 |
347 | //#define open p_real_open |
7fd42181 |
348 | #define fopen p_real_fopen |
b4f4cb40 |
349 | //#define mmap p_real_mmap |
350 | //#define munmap p_real_munmap |
351 | //#define read p_real_read |
352 | //#define ioctl p_real_ioctl |
7fd42181 |
353 | #define sigaction p_real_sigaction |
354 | #define tcgetattr p_real_tcgetattr |
355 | #define tcsetattr p_real_tcsetattr |
356 | #define system p_real_system |
db9191ed |
357 | #define execve p_real_execve |
b4f4cb40 |
358 | //#define chdir p_real_chdir |
7fd42181 |
359 | |
360 | #undef MAKE_WRAP_SYM |
361 | #undef REAL_FUNC_NP |
362 | |
363 | #endif |
364 | |
365 | // just call real funcs for static, pointer for dynamic |
4d045184 |
366 | int real_open(const char *pathname, int flags, ...) |
7fd42181 |
367 | { |
4d045184 |
368 | va_list ap; |
369 | mode_t mode; |
b4f4cb40 |
370 | long ret; |
4d045184 |
371 | |
372 | va_start(ap, flags); |
373 | mode = va_arg(ap, mode_t); |
374 | va_end(ap); |
b4f4cb40 |
375 | ret = g_open_raw(pathname, flags, mode); |
376 | return g_syscall_error(ret); |
7fd42181 |
377 | } |
378 | |
379 | FILE *real_fopen(const char *path, const char *mode) |
380 | { |
381 | return fopen(path, mode); |
382 | } |
383 | |
b4f4cb40 |
384 | void *real_mmap(void *addr, size_t length, int prot, int flags, |
385 | int fd, off_t offset) |
7fd42181 |
386 | { |
b4f4cb40 |
387 | long ret = g_mmap2_raw(addr, length, prot, flags, fd, offset >> 12); |
388 | return (void *)g_syscall_error(ret); |
7fd42181 |
389 | } |
390 | |
3ef07128 |
391 | int real_munmap(void *addr, size_t length) |
392 | { |
b4f4cb40 |
393 | return g_syscall_error(g_munmap_raw(addr, length)); |
3ef07128 |
394 | } |
395 | |
7fd42181 |
396 | int real_read(int fd, void *buf, size_t count) |
397 | { |
b4f4cb40 |
398 | long ret = g_read_raw(fd, buf, count); |
399 | return g_syscall_error(ret); |
7fd42181 |
400 | } |
401 | |
b4f4cb40 |
402 | int real_ioctl(int fd, int request, void *argp) |
7fd42181 |
403 | { |
b4f4cb40 |
404 | long ret = g_ioctl_raw(fd, request, argp); |
405 | return g_syscall_error(ret); |
406 | } |
407 | |
408 | int real_close(int fd) |
409 | { |
410 | long ret = g_close_raw(fd); |
411 | return g_syscall_error(ret); |
7fd42181 |
412 | } |
413 | |
414 | int real_sigaction(int signum, const sigaction_t *act, sigaction_t *oldact) |
415 | { |
416 | return sigaction(signum, act, oldact); |
417 | } |
418 | |
419 | int real_tcgetattr(int fd, struct termios *termios_p) |
420 | { |
421 | return tcgetattr(fd, termios_p); |
422 | } |
423 | |
424 | int real_tcsetattr(int fd, int optional_actions, |
425 | const struct termios *termios_p) |
426 | { |
427 | return tcsetattr(fd, optional_actions, termios_p); |
428 | } |
429 | |
430 | int real_system(const char *command) |
431 | { |
432 | return system(command); |
433 | } |
db9191ed |
434 | |
435 | // real_exec* is missing intentionally - we don't need them |
436 | |
437 | int real_execve(const char *filename, char *const argv[], |
438 | char *const envp[]) |
439 | { |
440 | return execve(filename, argv, envp); |
441 | } |
442 | |
443 | int real_chdir(const char *path) |
444 | { |
b4f4cb40 |
445 | long ret = g_chdir_raw(path); |
446 | return g_syscall_error(ret); |
447 | } |
448 | |
449 | void real_sleep(unsigned int seconds) |
450 | { |
451 | struct timespec ts = { seconds, 0 }; |
452 | g_nanosleep_raw(&ts, NULL); |
453 | } |
454 | |
455 | void real_usleep(unsigned int usec) |
456 | { |
457 | struct timespec ts = { usec / 1000000, usec % 1000000 }; |
458 | g_nanosleep_raw(&ts, NULL); |
459 | } |
460 | |
461 | void real_exit(int status) |
462 | { |
463 | g_exit_group_raw(status); |
db9191ed |
464 | } |
499bf01c |
465 | |
466 | // vim:shiftwidth=2:expandtab |