2 * GINGE - GINGE Is Not Gp2x Emulator
3 * (C) notaz, 2010-2011,2016
5 * This work is licensed under the MAME license, see COPYING file for details.
11 #include <sys/types.h>
16 #include <sys/ioctl.h>
21 #include "realfuncs.h"
27 #define strace g_printf
32 #define UNUSED __attribute__((unused))
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 },
42 { "/dev/tty", FAKEDEV_TTY0 },
43 { "/dev/tty0", FAKEDEV_TTY0 },
45 { "/dev/input/event*", -1 }, // hide for now, may cause dupe events
49 static long w_open_raw(const char *pathname, int flags, mode_t mode)
54 for (i = 0; i < ARRAY_SIZE(takeover_devs); i++) {
55 const char *p, *oname;
58 oname = takeover_devs[i].name;
59 p = strchr(oname, '*');
63 len = strlen(oname) + 1;
65 if (strncmp(pathname, oname, len) == 0) {
66 ret = takeover_devs[i].fd;
71 if (i == ARRAY_SIZE(takeover_devs))
72 ret = g_open_raw(pathname, flags, mode);
75 for (i = 0; emu_interesting_fds[i].name != NULL; i++) {
76 struct dev_fd_t *eifd = &emu_interesting_fds[i];
77 if (strcmp(pathname, eifd->name) == 0) {
79 if (eifd->open_cb != NULL)
86 strace("open(%s) = %ld\n", pathname, ret);
90 static int w_open(const char *pathname, int flags, mode_t mode)
92 long ret = w_open_raw(pathname, flags, mode);
93 return g_syscall_error(ret);
96 static long w_mmap_raw(void *addr, size_t length, int prot, int flags,
101 if (FAKEDEV_MEM <= fd && fd < FAKEDEV_FD_BOUNDARY)
102 ret = emu_do_mmap(length, prot, flags, fd, offset);
104 ret = g_mmap2_raw(addr, length, prot, flags, fd, offset >> 12);
106 strace("mmap(%p, %x, %x, %x, %d, %lx) = %lx\n",
107 addr, length, prot, flags, fd, (long)offset, ret);
111 static long w_mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset)
113 long ret = w_mmap_raw(addr, length, prot, flags, fd, offset);
114 return g_syscall_error(ret);
116 #define w_mmap2 w_mmap
118 static long w_munmap_raw(void *addr, size_t length)
122 ret = emu_do_munmap(addr, length);
124 ret = g_munmap_raw(addr, length);
126 strace("munmap(%p, %x) = %ld\n", addr, length, ret);
130 static int w_munmap(void *addr, size_t length)
132 long ret = w_munmap_raw(addr, length);
133 return g_syscall_error(ret);
136 long w_read_raw(int fd, void *buf, size_t count)
140 if (fd == FAKEDEV_GPIO)
141 ret = emu_read_gpiodev(buf, count);
143 ret = g_read_raw(fd, buf, count);
145 //strace("read(%d, %p, %ld) = %ld\n", fd, buf, count, ret);
149 static ssize_t w_read(int fd, void *buf, size_t count)
151 long ret = w_read_raw(fd, buf, count);
152 return g_syscall_error(ret);
155 long w_ioctl_raw(int fd, int request, void *argp)
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);
163 ret = g_ioctl_raw(fd, request, argp);
165 strace("ioctl(%d, %08x, %p) = %ld\n", fd, request, argp, ret);
169 static int w_ioctl(int fd, int request, void *argp)
171 long ret = w_ioctl_raw(fd, request, argp);
172 return g_syscall_error(ret);
175 static int w_sigaction(int signum, const void *act, void *oldact)
177 strace("sigaction(%d, %p, %p) = %d\n", signum, act, oldact, 0);
182 static UNUSED int w_tcgetattr(int fd, struct termios *termios_p)
185 if (fd != FAKEDEV_TTY0)
186 ret = tcgetattr(fd, termios_p);
190 strace("tcgetattr(%d, %p) = %d\n", fd, termios_p, ret);
194 static UNUSED int w_tcsetattr(int fd, int optional_actions,
195 const struct termios *termios_p)
198 if (fd != FAKEDEV_TTY0)
199 ret = tcsetattr(fd, optional_actions, termios_p);
203 strace("tcsetattr(%d, %x, %p) = %d\n", fd, optional_actions, termios_p, ret);
207 static UNUSED FILE *w_fopen(const char *path, const char *mode)
209 FILE *ret = emu_do_fopen(path, mode);
210 strace("fopen(%s, %s) = %p\n", path, mode, ret);
214 static UNUSED int w_system(const char *command)
216 int ret = emu_do_system(command);
217 strace("system(%s) = %d\n", command, ret);
221 extern char **environ;
223 static UNUSED int w_execl(const char *path, const char *arg, ...)
225 // don't allow exec (for now)
226 strace("execl(%s, %s, ...) = ?\n", path, arg);
230 static UNUSED int w_execlp(const char *file, const char *arg, ...)
232 strace("execlp(%s, %s, ...) = ?\n", file, arg);
236 static UNUSED int w_execle(const char *path, const char *arg, ...)
238 strace("execle(%s, %s, ...) = ?\n", path, arg);
242 static UNUSED int w_execv(const char *path, char *const argv[])
244 strace("execv(%s, %p) = ?\n", path, argv);
245 return emu_do_execve(path, argv, environ);
248 static UNUSED int w_execvp(const char *file, char *const argv[])
250 strace("execvp(%s, %p) = ?\n", file, argv);
251 return emu_do_execve(file, argv, environ);
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[],
259 strace("execve(%s, %p, %p) = ?\n", filename, argv, envp);
260 return emu_do_execve(filename, argv, envp);
263 static int w_chdir(const char *path)
267 if (path != NULL && strstr(path, "/usr/gp2x") != NULL)
270 ret = g_chdir_raw(path);
271 strace("chdir(%s) = %d\n", path, ret);
272 return g_syscall_error(ret);
296 #define MAKE_WRAP_SYM_N(sym) \
297 /* alias wrap symbols to real names */ \
298 typeof(sym) sym __attribute__((alias("w_" #sym)))
300 #define MAKE_WRAP_SYM(sym) \
301 MAKE_WRAP_SYM_N(sym); \
302 /* wrapper to real functions, to be set up on load */ \
303 static typeof(sym) *p_real_##sym
305 // note: update symver too
306 MAKE_WRAP_SYM_N(open);
307 MAKE_WRAP_SYM(fopen);
308 MAKE_WRAP_SYM_N(mmap);
309 MAKE_WRAP_SYM_N(munmap);
310 MAKE_WRAP_SYM_N(read);
311 MAKE_WRAP_SYM_N(ioctl);
312 MAKE_WRAP_SYM(sigaction);
313 MAKE_WRAP_SYM(tcgetattr);
314 MAKE_WRAP_SYM(tcsetattr);
315 MAKE_WRAP_SYM(system);
316 MAKE_WRAP_SYM_N(execl);
317 MAKE_WRAP_SYM_N(execlp);
318 MAKE_WRAP_SYM_N(execle);
319 MAKE_WRAP_SYM_N(execv);
320 MAKE_WRAP_SYM_N(execvp);
321 MAKE_WRAP_SYM(execve);
322 MAKE_WRAP_SYM_N(chdir);
323 typeof(mmap) mmap2 __attribute__((alias("w_mmap")));
325 #define REAL_FUNC_NP(name) \
326 { #name, (void **)&p_real_##name }
328 static const struct {
331 } real_funcs_np[] = {
332 //REAL_FUNC_NP(open),
334 //REAL_FUNC_NP(mmap),
335 //REAL_FUNC_NP(munmap),
336 //REAL_FUNC_NP(read),
337 //REAL_FUNC_NP(ioctl),
338 REAL_FUNC_NP(sigaction),
339 REAL_FUNC_NP(tcgetattr),
340 REAL_FUNC_NP(tcsetattr),
341 REAL_FUNC_NP(system),
343 REAL_FUNC_NP(execve),
344 //REAL_FUNC_NP(chdir),
347 //#define open p_real_open
348 #define fopen p_real_fopen
349 //#define mmap p_real_mmap
350 //#define munmap p_real_munmap
351 //#define read p_real_read
352 //#define ioctl p_real_ioctl
353 #define sigaction p_real_sigaction
354 #define tcgetattr p_real_tcgetattr
355 #define tcsetattr p_real_tcsetattr
356 #define system p_real_system
357 #define execve p_real_execve
358 //#define chdir p_real_chdir
365 // just call real funcs for static, pointer for dynamic
366 int real_open(const char *pathname, int flags, ...)
373 mode = va_arg(ap, mode_t);
375 ret = g_open_raw(pathname, flags, mode);
376 return g_syscall_error(ret);
379 FILE *real_fopen(const char *path, const char *mode)
381 return fopen(path, mode);
384 void *real_mmap(void *addr, size_t length, int prot, int flags,
385 int fd, off_t offset)
387 long ret = g_mmap2_raw(addr, length, prot, flags, fd, offset >> 12);
388 return (void *)g_syscall_error(ret);
391 int real_munmap(void *addr, size_t length)
393 return g_syscall_error(g_munmap_raw(addr, length));
396 int real_read(int fd, void *buf, size_t count)
398 long ret = g_read_raw(fd, buf, count);
399 return g_syscall_error(ret);
402 int real_ioctl(int fd, int request, void *argp)
404 long ret = g_ioctl_raw(fd, request, argp);
405 return g_syscall_error(ret);
408 int real_close(int fd)
410 long ret = g_close_raw(fd);
411 return g_syscall_error(ret);
414 int real_sigaction(int signum, const sigaction_t *act, sigaction_t *oldact)
416 return sigaction(signum, act, oldact);
419 int real_tcgetattr(int fd, struct termios *termios_p)
421 return tcgetattr(fd, termios_p);
424 int real_tcsetattr(int fd, int optional_actions,
425 const struct termios *termios_p)
427 return tcsetattr(fd, optional_actions, termios_p);
430 int real_system(const char *command)
432 return system(command);
435 // real_exec* is missing intentionally - we don't need them
437 int real_execve(const char *filename, char *const argv[],
440 return execve(filename, argv, envp);
443 int real_chdir(const char *path)
445 long ret = g_chdir_raw(path);
446 return g_syscall_error(ret);
449 void real_sleep(unsigned int seconds)
451 struct timespec ts = { seconds, 0 };
452 g_nanosleep_raw(&ts, NULL);
455 void real_usleep(unsigned int usec)
457 struct timespec ts = { usec / 1000000, usec % 1000000 };
458 g_nanosleep_raw(&ts, NULL);
461 void real_exit(int status)
463 g_exit_group_raw(status);
466 // vim:shiftwidth=2:expandtab