11913091 |
1 | // vim:shiftwidth=2:expandtab |
2 | #include <stdio.h> |
3 | #include <stdlib.h> |
3d295a9f |
4 | #include <string.h> |
c1ffd5ba |
5 | #include <alloca.h> |
11913091 |
6 | #include <sys/types.h> |
7 | #include <sys/stat.h> |
8 | #include <fcntl.h> |
9 | #include <sys/mman.h> |
10 | #include <sys/types.h> |
11 | #include <unistd.h> |
12 | #include <signal.h> |
13 | #include <asm/ucontext.h> |
c1ffd5ba |
14 | #include <pthread.h> |
15 | #include <errno.h> |
16 | #include <time.h> |
17 | #include <sys/resource.h> |
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18 | #include <sys/ioctl.h> |
19 | #include <linux/soundcard.h> |
20 | #include <linux/fb.h> |
11913091 |
21 | |
22 | #include "header.h" |
7fd42181 |
23 | #include "../common/host_fb.h" |
24 | #include "../common/cmn.h" |
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25 | #include "sys_cacheflush.h" |
7fd42181 |
26 | #include "realfuncs.h" |
11913091 |
27 | |
7fd42181 |
28 | #if (dbg & 2) |
29 | #define LOG_IO_UNK |
30 | #endif |
31 | #if (dbg & 4) |
32 | #define LOG_IO |
33 | #endif |
6720e4e4 |
34 | //#define LOG_SEGV |
35 | |
36 | #ifdef LOG_IO |
37 | #define iolog log_io |
38 | #else |
86418a84 |
39 | #define iolog(...) |
6720e4e4 |
40 | #endif |
41 | |
c1ffd5ba |
42 | #ifdef LOG_IO_UNK |
6720e4e4 |
43 | #define iolog_unh log_io |
44 | #else |
45 | #define iolog_unh(...) |
46 | #endif |
47 | |
48 | #ifdef LOG_SEGV |
49 | #define segvlog printf |
50 | #else |
0881206b |
51 | #define segvlog(...) |
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52 | #endif |
53 | |
c1ffd5ba |
54 | #if defined(LOG_IO) || defined(LOG_IO_UNK) |
6720e4e4 |
55 | #include "mmsp2-regs.h" |
56 | #endif |
11913091 |
57 | |
58 | typedef unsigned int u32; |
59 | typedef unsigned short u16; |
60 | typedef unsigned char u8; |
61 | |
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62 | static pthread_mutex_t fb_mutex = PTHREAD_MUTEX_INITIALIZER; |
63 | static pthread_cond_t fb_cond = PTHREAD_COND_INITIALIZER; |
64 | |
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65 | struct uppermem_block { |
66 | u32 addr; // physical |
67 | u32 size; |
68 | void *mem; |
69 | struct uppermem_block *next; |
70 | }; |
71 | |
72 | static struct uppermem_block *upper_mem; |
73 | |
74 | static struct { |
75 | u32 dstctrl; |
76 | u32 dstaddr; |
77 | u32 dststride; |
78 | u32 srcctrl; |
79 | u32 srcaddr; // |
80 | u32 srcstride; |
81 | u32 srcforcolor; |
82 | u32 srcbackcolor; |
83 | u32 patctrl; // |
84 | u32 patforcolor; |
85 | u32 patbackcolor; |
86 | u32 size; |
87 | u32 ctrl; // |
88 | u32 run; |
89 | u32 intc; |
90 | u32 srcfifo; |
91 | } blitter; |
92 | |
0881206b |
93 | #define SRCCTRL_INVIDEO (1 << 8) |
94 | #define SRCCTRL_SRCENB (1 << 7) |
95 | #define CTRL_TRANSPARENCYENB (1 << 11) |
96 | |
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97 | static struct { |
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98 | u16 mlc_stl_cntl; |
3d295a9f |
99 | union { |
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100 | u32 mlc_stl_adr; |
3d295a9f |
101 | struct { |
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102 | u16 mlc_stl_adrl; |
103 | u16 mlc_stl_adrh; |
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104 | }; |
105 | }; |
6720e4e4 |
106 | u16 mlc_stl_pallt_a; |
107 | union { |
108 | u16 mlc_stl_pallt_d[256*2]; |
109 | u32 mlc_stl_pallt_d32[256]; |
110 | }; |
111 | |
112 | // state |
113 | u16 host_pal[256]; |
114 | u32 old_mlc_stl_adr; |
115 | u32 btn_state; // as seen through /dev/GPIO |
dc90c02d |
116 | u32 dirty_pal:1; |
3d295a9f |
117 | } mmsp2; |
118 | |
119 | static u16 *host_screen; |
120 | static int host_stride; |
11913091 |
121 | |
122 | |
c1ffd5ba |
123 | #if defined(LOG_IO) || defined(LOG_IO_UNK) |
6720e4e4 |
124 | static void log_io(const char *pfx, u32 a, u32 d, int size) |
125 | { |
126 | const char *fmt, *reg = ""; |
127 | switch (size) { |
c1ffd5ba |
128 | case 8: fmt = "%s %08x %02x %s\n"; d &= 0xff; break; |
129 | case 32: fmt = "%s %08x %08x %s\n"; break; |
130 | default: fmt = "%s %08x %04x %s\n"; d &= 0xffff; break; |
6720e4e4 |
131 | } |
132 | |
133 | if ((a & ~0xffff) == 0x7f000000) |
134 | reg = regnames[a & 0xffff]; |
135 | |
136 | printf(fmt, pfx, a, d, reg); |
137 | } |
138 | #endif |
139 | |
0881206b |
140 | static void memset16(void *dst, u32 pattern, int count) |
141 | { |
142 | u32 *dl; |
143 | u16 *d; |
144 | |
145 | d = (u16 *)((long)dst & ~1); |
146 | if ((long)d & 2) { |
147 | *d++ = pattern; |
148 | count--; |
149 | } |
150 | dl = (void *)d; |
151 | pattern |= pattern << 16; |
152 | |
153 | while (count >= 2) { |
154 | *dl++ = pattern; |
155 | count -= 2; |
156 | } |
157 | if (count) |
158 | *(u16 *)dl = pattern; |
159 | } |
160 | |
161 | static void blt_tr(void *dst, void *src, u32 trc, int w) |
162 | { |
163 | u16 *d = (u16 *)((long)dst & ~1); |
164 | u16 *s = (u16 *)((long)src & ~1); |
165 | |
166 | // XXX: optimize |
167 | for (; w > 0; d++, s++, w--) |
168 | if (*s != trc) |
169 | *d = *s; |
170 | } |
171 | |
172 | #define dump_blitter() \ |
173 | { \ |
174 | u32 *r = &blitter.dstctrl; \ |
175 | int i; \ |
176 | for (i = 0; i < 4*4; i++, r++) { \ |
177 | printf("%08x ", *r); \ |
178 | if ((i & 3) == 3) \ |
179 | printf("\n"); \ |
180 | } \ |
181 | } |
182 | |
6720e4e4 |
183 | static void *uppermem_lookup(u32 addr, u8 **mem_end) |
11913091 |
184 | { |
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185 | struct uppermem_block *ub; |
186 | |
3d295a9f |
187 | for (ub = upper_mem; ub != NULL; ub = ub->next) { |
188 | if (ub->addr <= addr && addr < ub->addr + ub->size) { |
189 | *mem_end = (u8 *)ub->mem + ub->size; |
190 | return (u8 *)ub->mem + addr - ub->addr; |
191 | } |
11913091 |
192 | } |
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193 | |
194 | return NULL; |
11913091 |
195 | } |
196 | |
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197 | static void blitter_do(void) |
11913091 |
198 | { |
0881206b |
199 | u8 *dst, *dste, *src = NULL, *srce = NULL; |
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200 | int w, h, sstrd, dstrd; |
6720e4e4 |
201 | int to_screen = 0; |
dc90c02d |
202 | u32 bpp, addr; |
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203 | |
204 | w = blitter.size & 0x7ff; |
205 | h = (blitter.size >> 16) & 0x7ff; |
206 | sstrd = blitter.srcstride; |
207 | dstrd = blitter.dststride; |
208 | |
0881206b |
209 | // XXX: need to confirm this.. |
210 | addr = (blitter.dstaddr & ~3) | ((blitter.dstctrl & 0x1f) >> 3); |
c1ffd5ba |
211 | |
dc90c02d |
212 | // use dst bpp.. How does it do blits with different src bpp? |
213 | bpp = (blitter.dstctrl & 0x20) ? 16 : 8; |
214 | |
c1ffd5ba |
215 | // maybe the screen? |
dc90c02d |
216 | if (((w == 320 && h == 240) || // blit whole screen |
217 | (w * h >= 320*240/2)) && // ..or at least half of the area |
218 | mmsp2.mlc_stl_adr <= addr && addr < mmsp2.mlc_stl_adr + 320*240*2) |
c1ffd5ba |
219 | to_screen = 1; |
220 | |
221 | dst = uppermem_lookup(addr, &dste); |
0881206b |
222 | |
223 | // XXX: assume fill if no SRCENB, but it could be pattern blit.. |
224 | if (blitter.srcctrl & SRCCTRL_SRCENB) { |
225 | if (!(blitter.srcctrl & SRCCTRL_INVIDEO)) |
226 | goto bad_blit; |
227 | |
228 | addr = (blitter.srcaddr & ~3) | ((blitter.srcctrl & 0x1f) >> 3); |
c1ffd5ba |
229 | src = uppermem_lookup(addr, &srce); |
0881206b |
230 | if (src == NULL) |
231 | goto bad_blit; |
232 | |
233 | if (src + sstrd * h > srce) { |
6720e4e4 |
234 | err("blit %08x->%08x %dx%d did not fit src\n", |
0881206b |
235 | blitter.srcaddr, blitter.dstaddr, w, h); |
236 | h = (srce - src) / sstrd; |
237 | } |
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238 | } |
239 | |
dc90c02d |
240 | if (dst == NULL) |
241 | goto bad_blit; |
242 | |
3d295a9f |
243 | if (dst + dstrd * h > dste) { |
6720e4e4 |
244 | err("blit %08x->%08x %dx%d did not fit dst\n", |
3d295a9f |
245 | blitter.srcaddr, blitter.dstaddr, w, h); |
246 | h = (dste - dst) / dstrd; |
247 | } |
248 | |
0881206b |
249 | if (src != NULL) { |
250 | // copy |
dc90c02d |
251 | if (bpp == 16 && (blitter.ctrl & CTRL_TRANSPARENCYENB)) { |
0881206b |
252 | u32 trc = blitter.ctrl >> 16; |
253 | for (; h > 0; h--, dst += dstrd, src += sstrd) |
254 | blt_tr(dst, src, trc, w); |
255 | } |
256 | else { |
257 | for (; h > 0; h--, dst += dstrd, src += sstrd) |
dc90c02d |
258 | memcpy(dst, src, w * bpp / 8); |
0881206b |
259 | } |
3d295a9f |
260 | } |
0881206b |
261 | else { |
262 | // fill. Assume the pattern is cleared and bg color is used |
263 | u32 bgc = blitter.patbackcolor & 0xffff; |
dc90c02d |
264 | if (bpp == 16) { |
265 | for (; h > 0; h--, dst += dstrd) |
266 | memset16(dst, bgc, w); |
267 | } |
268 | else { |
269 | for (; h > 0; h--, dst += dstrd) |
270 | memset(dst, bgc, w); // bgc? |
271 | } |
0881206b |
272 | } |
6720e4e4 |
273 | |
274 | if (to_screen) |
c1ffd5ba |
275 | pthread_cond_signal(&fb_cond); |
0881206b |
276 | return; |
3d295a9f |
277 | |
0881206b |
278 | bad_blit: |
6720e4e4 |
279 | err("blit %08x->%08x %dx%d translated to %p->%p\n", |
0881206b |
280 | blitter.srcaddr, blitter.dstaddr, w, h, src, dst); |
281 | dump_blitter(); |
3d295a9f |
282 | } |
283 | |
6720e4e4 |
284 | // TODO: hw scaler stuff |
c1ffd5ba |
285 | static void mlc_flip(u8 *src, int bpp) |
6720e4e4 |
286 | { |
6720e4e4 |
287 | u16 *dst = host_screen; |
288 | u16 *hpal = mmsp2.host_pal; |
6720e4e4 |
289 | int i, u; |
290 | |
6720e4e4 |
291 | if (bpp <= 8 && mmsp2.dirty_pal) { |
292 | u32 *srcp = mmsp2.mlc_stl_pallt_d32; |
293 | u16 *dstp = hpal; |
294 | |
295 | for (i = 0; i < 256; i++, srcp++, dstp++) { |
296 | u32 t = *srcp; |
297 | *dstp = ((t >> 8) & 0xf800) | ((t >> 5) & 0x07e0) | ((t >> 3) & 0x001f); |
298 | } |
299 | mmsp2.dirty_pal = 0; |
300 | } |
301 | |
302 | switch (bpp) { |
303 | case 4: |
304 | for (i = 0; i < 240; i++, dst += host_stride / 2 - 320) { |
305 | for (u = 320 / 2; u > 0; u--, src++) { |
306 | *dst++ = hpal[*src >> 4]; |
307 | *dst++ = hpal[*src & 0x0f]; |
308 | } |
309 | } |
310 | break; |
311 | |
312 | case 8: |
313 | for (i = 0; i < 240; i++, dst += host_stride / 2 - 320) { |
314 | for (u = 320 / 4; u > 0; u--) { |
315 | *dst++ = hpal[*src++]; |
316 | *dst++ = hpal[*src++]; |
317 | *dst++ = hpal[*src++]; |
318 | *dst++ = hpal[*src++]; |
319 | } |
320 | } |
321 | break; |
322 | |
323 | case 16: |
324 | for (i = 0; i < 240; i++, dst += host_stride / 2, src += 320*2) |
325 | memcpy(dst, src, 320*2); |
326 | break; |
327 | |
328 | case 24: |
329 | // TODO |
330 | break; |
331 | } |
332 | |
333 | host_screen = host_video_flip(); |
334 | } |
335 | |
c1ffd5ba |
336 | #define ts_add_nsec(ts, ns) { \ |
337 | ts.tv_nsec += ns; \ |
338 | if (ts.tv_nsec >= 1000000000) { \ |
339 | ts.tv_sec++; \ |
340 | ts.tv_nsec -= 1000000000; \ |
341 | } \ |
342 | } |
343 | |
344 | static void *fb_sync_thread(void *arg) |
345 | { |
346 | int invalid_fb_addr = 1; |
347 | int manual_refresh = 0; |
348 | struct timespec ts; |
349 | int ret, wait_ret; |
350 | |
351 | //ret = pthread_setschedprio(pthread_self(), -1); |
352 | //log("pthread_setschedprio %d\n", ret); |
353 | //ret = setpriority(PRIO_PROCESS, 0, -1); |
354 | //log("setpriority %d\n", ret); |
355 | |
356 | ret = clock_gettime(CLOCK_REALTIME, &ts); |
357 | if (ret != 0) { |
358 | perror(PFX "clock_gettime"); |
359 | exit(1); |
360 | } |
361 | |
362 | while (1) { |
363 | u8 *gp2x_fb, *gp2x_fb_end; |
364 | int mode, bpp; |
365 | |
366 | ret = pthread_mutex_lock(&fb_mutex); |
367 | wait_ret = pthread_cond_timedwait(&fb_cond, &fb_mutex, &ts); |
368 | ret |= pthread_mutex_unlock(&fb_mutex); |
dc90c02d |
369 | |
c1ffd5ba |
370 | if (ret != 0) { |
371 | err("fb_thread: mutex error: %d\n", ret); |
372 | sleep(1); |
373 | continue; |
374 | } |
375 | if (wait_ret != 0 && wait_ret != ETIMEDOUT) { |
376 | err("fb_thread: cond error: %d\n", wait_ret); |
377 | sleep(1); |
378 | continue; |
379 | } |
380 | |
381 | if (wait_ret != ETIMEDOUT) { |
382 | clock_gettime(CLOCK_REALTIME, &ts); |
383 | ts_add_nsec(ts, 50000000); |
384 | manual_refresh++; |
385 | if (manual_refresh == 2) |
386 | log("fb_thread: switch to manual refresh\n"); |
387 | } else { |
388 | ts_add_nsec(ts, 16666667); |
389 | if (manual_refresh > 1) |
390 | log("fb_thread: switch to auto refresh\n"); |
391 | manual_refresh = 0; |
392 | } |
393 | |
394 | mode = (mmsp2.mlc_stl_cntl >> 9) & 3; |
395 | bpp = mode ? mode * 8 : 4; |
396 | |
397 | gp2x_fb = uppermem_lookup(mmsp2.mlc_stl_adr, &gp2x_fb_end); |
398 | if (gp2x_fb == NULL || gp2x_fb + 320*240 * bpp / 8 > gp2x_fb_end) { |
399 | if (!invalid_fb_addr) { |
400 | err("fb_thread: %08x is out of range\n", mmsp2.mlc_stl_adr); |
401 | invalid_fb_addr = 1; |
402 | } |
403 | continue; |
404 | } |
405 | |
406 | mlc_flip(gp2x_fb, bpp); |
407 | } |
408 | } |
409 | |
3d295a9f |
410 | static u32 xread8(u32 a) |
411 | { |
6720e4e4 |
412 | iolog("r8 ", a, 0, 8); |
413 | iolog_unh("r8 ", a, 0, 8); |
3d295a9f |
414 | return 0; |
11913091 |
415 | } |
416 | |
417 | static u32 xread16(u32 a) |
418 | { |
6720e4e4 |
419 | static u32 fudge, old_a; |
420 | u32 d = 0, t; |
421 | |
422 | if ((a & 0xffff0000) == 0x7f000000) { |
423 | u32 a_ = a & 0xffff; |
424 | switch (a_) { |
425 | case 0x0910: // FPLL |
426 | case 0x0912: |
427 | d = 0x9407; |
428 | break; |
429 | // minilib reads as: |
430 | // 0000 P000 VuVd00 0000 YXBA RLSeSt 0R0D 0L0U |
431 | // | GPIOD |GPIOC[8:15]|GPIOM[0:7]| |
432 | // /dev/GPIO: |
433 | // ... 0PVdVu ... |
434 | case 0x1184: // GPIOC |
435 | d = ~mmsp2.btn_state & 0xff00; |
436 | d |= 0x00ff; |
437 | break; |
438 | case 0x1186: // GPIOD |
439 | t = ~mmsp2.btn_state; |
440 | d = (t >> 9) & 0x0080; |
441 | d |= (t >> 11) & 0x0040; |
442 | d |= (t >> 7) & 0x0800; |
443 | d |= 0x373b; |
444 | break; |
445 | case 0x1198: // GPIOM |
446 | mmsp2.btn_state = host_read_btns(); |
447 | d = ~mmsp2.btn_state & 0xff; |
448 | d |= 0x01aa; |
449 | break; |
c1ffd5ba |
450 | case 0x1836: // reserved |
451 | d = 0x2330; |
452 | break; |
453 | case 0x2816: // DPC_X_MAX |
454 | d = 319; |
455 | break; |
456 | case 0x2818: // DPC_Y_MAX |
457 | d = 239; |
458 | break; |
6720e4e4 |
459 | case 0x28da: |
460 | d = mmsp2.mlc_stl_cntl; |
461 | break; |
c1ffd5ba |
462 | case 0x290e: |
463 | case 0x2912: |
464 | d = mmsp2.mlc_stl_adrl; |
465 | break; |
466 | case 0x2910: |
467 | case 0x2914: |
468 | d = mmsp2.mlc_stl_adrh; |
469 | break; |
6720e4e4 |
470 | case 0x2958: |
471 | d = mmsp2.mlc_stl_pallt_a; |
472 | break; |
473 | default: |
474 | goto unh; |
475 | } |
476 | goto out; |
477 | } |
478 | |
479 | unh: |
480 | if (a == old_a) { |
481 | d = fudge; |
482 | fudge = ~fudge; |
483 | } |
484 | old_a = a; |
485 | iolog_unh("r16", a, d & 0xffff, 16); |
486 | |
487 | out: |
488 | d &= 0xffff; |
489 | iolog("r16", a, d, 16); |
490 | return d; |
11913091 |
491 | } |
492 | |
493 | static u32 xread32(u32 a) |
494 | { |
3d295a9f |
495 | u32 d = 0; |
dc90c02d |
496 | if ((a & 0xfff00000) == 0x7f000000) { |
497 | u32 a_ = a & 0xffff; |
498 | switch (a_) { |
499 | case 0x0a00: // TCOUNT, 1/7372800s |
500 | // TODO |
501 | break; |
502 | } |
503 | } |
3d295a9f |
504 | if ((a & 0xfff00000) == 0x7f100000) { |
505 | u32 *bl = &blitter.dstctrl; |
6720e4e4 |
506 | u32 a_ = a & 0xfff; |
507 | if (a_ < 0x40) { |
508 | d = bl[a_ / 4]; |
509 | if (a_ == 0x34) |
510 | d = 0; // not busy |
511 | goto out; |
512 | } |
3d295a9f |
513 | } |
6720e4e4 |
514 | iolog_unh("r32", a, d, 32); |
515 | |
516 | out: |
517 | iolog("r32", a, d, 32); |
3d295a9f |
518 | return d; |
11913091 |
519 | } |
520 | |
521 | static void xwrite8(u32 a, u32 d) |
522 | { |
6720e4e4 |
523 | iolog("w8 ", a, d, 8); |
524 | iolog_unh("w8 ", a, d, 8); |
11913091 |
525 | } |
526 | |
527 | static void xwrite16(u32 a, u32 d) |
528 | { |
6720e4e4 |
529 | iolog("w16", a, d, 16); |
3d295a9f |
530 | if ((a & 0xfff00000) == 0x7f000000) { |
6720e4e4 |
531 | u32 a_ = a & 0xffff; |
532 | switch (a_) { |
533 | case 0x28da: |
534 | mmsp2.mlc_stl_cntl = d | 0xaa; |
535 | break; |
536 | case 0x290e: |
537 | case 0x2910: |
538 | // odd addresses don't affect LCD. What about TV? |
539 | return; |
540 | case 0x2912: |
541 | mmsp2.mlc_stl_adrl = d; |
542 | return; |
543 | case 0x2914: |
544 | mmsp2.mlc_stl_adrh = d; |
545 | if (mmsp2.mlc_stl_adr != mmsp2.old_mlc_stl_adr) |
c1ffd5ba |
546 | // ask for refresh |
547 | pthread_cond_signal(&fb_cond); |
6720e4e4 |
548 | mmsp2.old_mlc_stl_adr = mmsp2.mlc_stl_adr; |
549 | return; |
550 | case 0x2958: |
551 | mmsp2.mlc_stl_pallt_a = d & 0x1ff; |
552 | return; |
553 | case 0x295a: |
554 | mmsp2.mlc_stl_pallt_d[mmsp2.mlc_stl_pallt_a++] = d; |
555 | mmsp2.mlc_stl_pallt_a &= 0x1ff; |
556 | mmsp2.dirty_pal = 1; |
557 | return; |
3d295a9f |
558 | } |
3d295a9f |
559 | } |
6720e4e4 |
560 | iolog_unh("w16", a, d, 16); |
11913091 |
561 | } |
562 | |
563 | static void xwrite32(u32 a, u32 d) |
564 | { |
6720e4e4 |
565 | iolog("w32", a, d, 32); |
566 | |
3d295a9f |
567 | if ((a & 0xfff00000) == 0x7f100000) { |
568 | u32 *bl = &blitter.dstctrl; |
6720e4e4 |
569 | u32 a_ = a & 0xfff; |
570 | if (a_ < 0x40) { |
571 | bl[a_ / 4] = d; |
572 | if (a_ == 0x34 && (d & 1)) |
573 | blitter_do(); |
574 | return; |
575 | } |
3d295a9f |
576 | } |
6720e4e4 |
577 | iolog_unh("w32", a, d, 32); |
11913091 |
578 | } |
579 | |
6720e4e4 |
580 | #define LINKPAGE_SIZE 0x1000 |
581 | #define LINKPAGE_COUNT 4 |
582 | #define LINKPAGE_ALLOC (LINKPAGE_SIZE * LINKPAGE_COUNT) |
583 | |
584 | struct op_context { |
585 | u32 pc; |
586 | u32 op; |
587 | u32 code[0]; |
588 | }; |
589 | |
590 | struct linkpage { |
591 | u32 saved_regs[15]; |
592 | u32 cpsr; |
593 | u32 *handler_stack; |
594 | void (*handler)(struct op_context *op_ctx); |
595 | u32 code[0]; |
596 | }; |
597 | |
598 | static struct linkpage *g_linkpage; |
599 | static u32 *g_code_ptr; |
600 | static int g_linkpage_count; |
601 | |
6720e4e4 |
602 | static void *g_handler_stack_end; |
603 | |
11913091 |
604 | #define BIT_SET(v, b) (v & (1 << (b))) |
605 | |
6720e4e4 |
606 | static void handle_op(struct op_context *op_ctx) |
11913091 |
607 | { |
6720e4e4 |
608 | u32 *regs = g_linkpage->saved_regs; |
609 | u32 op = op_ctx->op; |
11913091 |
610 | u32 t, shift, ret, addr; |
611 | int rn, rd; |
612 | |
613 | rd = (op & 0x0000f000) >> 12; |
614 | rn = (op & 0x000f0000) >> 16; |
615 | |
616 | if ((op & 0x0f200090) == 0x01000090) { // AM3: LDRH, STRH |
86418a84 |
617 | if (!BIT_SET(op, 5)) // !H |
618 | goto unhandled; |
619 | if (BIT_SET(op, 6) && !BIT_SET(op, 20)) // S && !L |
11913091 |
620 | goto unhandled; |
621 | |
622 | if (BIT_SET(op, 22)) // imm offset |
623 | t = ((op & 0xf00) >> 4) | (op & 0x0f); |
624 | else // reg offset |
625 | t = regs[op & 0x000f]; |
626 | |
627 | if (!BIT_SET(op, 23)) |
628 | t = -t; |
629 | addr = regs[rn] + t; |
630 | |
631 | if (BIT_SET(op, 20)) { // Load |
632 | ret = xread16(addr); |
86418a84 |
633 | if (BIT_SET(op, 6)) { // S |
634 | ret <<= 16; |
635 | ret = (signed int)ret >> 16; |
636 | } |
11913091 |
637 | regs[rd] = ret; |
638 | } |
639 | else |
640 | xwrite16(addr, regs[rd]); |
641 | } |
642 | else if ((op & 0x0d200000) == 0x05000000) { // AM2: LDR[B], STR[B] |
643 | if (BIT_SET(op, 25)) { // reg offs |
644 | if (BIT_SET(op, 4)) |
645 | goto unhandled; |
646 | |
647 | t = regs[op & 0x000f]; |
648 | shift = (op & 0x0f80) >> 7; |
649 | switch ((op & 0x0060) >> 5) { |
650 | case 0: t = t << shift; break; |
651 | case 1: t = t >> (shift + 1); break; |
652 | case 2: t = (signed int)t >> (shift + 1); break; |
653 | case 3: goto unhandled; // I'm just lazy |
654 | } |
655 | } |
656 | else // imm offs |
657 | t = op & 0x0fff; |
658 | |
659 | if (!BIT_SET(op, 23)) |
660 | t = -t; |
661 | addr = regs[rn] + t; |
662 | |
663 | if (BIT_SET(op, 20)) { // Load |
664 | if (BIT_SET(op, 22)) // Byte |
665 | ret = xread8(addr); |
666 | else |
667 | ret = xread32(addr); |
668 | regs[rd] = ret; |
669 | } |
670 | else { |
671 | if (BIT_SET(op, 22)) // Byte |
672 | xwrite8(addr, regs[rd]); |
673 | else |
674 | xwrite32(addr, regs[rd]); |
675 | } |
676 | } |
677 | else |
678 | goto unhandled; |
679 | |
86418a84 |
680 | #if 0 |
11913091 |
681 | if (addr != addr_check) { |
682 | fprintf(stderr, "bad calculated addr: %08x vs %08x\n", addr, addr_check); |
683 | abort(); |
684 | } |
86418a84 |
685 | #endif |
11913091 |
686 | return; |
687 | |
688 | unhandled: |
6720e4e4 |
689 | err("unhandled IO op %08x @ %08x\n", op, op_ctx->pc); |
86418a84 |
690 | } |
691 | |
692 | static u32 make_offset12(u32 *pc, u32 *target) |
693 | { |
694 | int lp_offs, u = 1; |
695 | |
696 | lp_offs = (char *)target - (char *)pc - 2*4; |
697 | if (lp_offs < 0) { |
698 | lp_offs = -lp_offs; |
699 | u = 0; |
700 | } |
701 | if (lp_offs >= LINKPAGE_SIZE) { |
6720e4e4 |
702 | err("linkpage too far: %d\n", lp_offs); |
86418a84 |
703 | abort(); |
704 | } |
705 | |
706 | return (u << 23) | lp_offs; |
707 | } |
708 | |
6720e4e4 |
709 | static u32 make_jmp(u32 *pc, u32 *target, int bl) |
86418a84 |
710 | { |
711 | int jmp_val; |
712 | |
713 | jmp_val = target - pc - 2; |
714 | if (jmp_val < (int)0xff000000 || jmp_val > 0x00ffffff) { |
6720e4e4 |
715 | err("jump out of range (%p -> %p)\n", pc, target); |
86418a84 |
716 | abort(); |
717 | } |
718 | |
6720e4e4 |
719 | return 0xea000000 | (bl << 24) | (jmp_val & 0x00ffffff); |
86418a84 |
720 | } |
721 | |
722 | static void emit_op(u32 op) |
723 | { |
724 | *g_code_ptr++ = op; |
725 | } |
726 | |
727 | static void emit_op_io(u32 op, u32 *target) |
728 | { |
729 | op |= make_offset12(g_code_ptr, target); |
730 | emit_op(op); |
731 | } |
732 | |
6720e4e4 |
733 | static void init_linkpage(void) |
734 | { |
735 | g_linkpage->handler = handle_op; |
736 | g_linkpage->handler_stack = g_handler_stack_end; |
737 | g_code_ptr = g_linkpage->code; |
738 | |
739 | // common_code. |
740 | // r0 and r14 must be saved by caller, r0 is arg for handle_op |
741 | // on return everything is restored except lr, which is used to return |
742 | emit_op_io(0xe50f1000, &g_linkpage->saved_regs[1]); // str r1, [->saved_regs[1]] @ save r1 |
743 | emit_op (0xe24f1000 + // sub r1, pc, =offs(saved_regs[2]) |
744 | (g_code_ptr - &g_linkpage->saved_regs[2] + 2) * 4); |
745 | emit_op (0xe8813ffc); // stmia r1, {r2-r13} |
746 | emit_op_io(0xe51fd000, // ldr sp, [->handler_stack] |
747 | (u32 *)&g_linkpage->handler_stack); |
748 | emit_op (0xe2414008); // sub r4, r1, #4*2 |
749 | emit_op (0xe10f1000); // mrs r1, cpsr |
750 | emit_op_io(0xe50f1000, &g_linkpage->cpsr); // str r1, [->cpsr] |
751 | emit_op (0xe1a0500e); // mov r5, lr |
752 | emit_op (0xe1a0e00f); // mov lr, pc |
753 | emit_op_io(0xe51ff000, (u32 *)&g_linkpage->handler); // ldr pc, =handle_op |
754 | emit_op_io(0xe51f1000, &g_linkpage->cpsr); // ldr r1, [->cpsr] |
755 | emit_op (0xe128f001); // msr cpsr_f, r1 |
756 | emit_op (0xe1a0e005); // mov lr, r5 |
757 | emit_op (0xe8943fff); // ldmia r4, {r0-r13} |
758 | emit_op (0xe12fff1e); // bx lr @ return |
759 | } |
760 | |
86418a84 |
761 | static void segv_sigaction(int num, siginfo_t *info, void *ctx) |
762 | { |
763 | struct ucontext *context = ctx; |
764 | u32 *regs = (u32 *)&context->uc_mcontext.arm_r0; |
765 | u32 *pc = (u32 *)regs[15]; |
6720e4e4 |
766 | struct op_context *op_ctx; |
7fd42181 |
767 | int i, lp_size; |
86418a84 |
768 | |
6720e4e4 |
769 | if (((regs[15] ^ (u32)&segv_sigaction) & 0xff000000) == 0 || // PC is in our segment or |
770 | (((regs[15] ^ (u32)g_linkpage) & ~(LINKPAGE_ALLOC - 1)) == 0) || // .. in linkpage |
771 | ((long)info->si_addr & 0xffe00000) != 0x7f000000) // faulting not where expected |
86418a84 |
772 | { |
773 | // real crash - time to die |
6720e4e4 |
774 | err("segv %d %p @ %08x\n", info->si_code, info->si_addr, regs[15]); |
7fd42181 |
775 | for (i = 0; i < 8; i++) |
776 | err(" r%d=%08x r%2d=%08x\n", i, regs[i], i+8, regs[i+8]); |
86418a84 |
777 | signal(num, SIG_DFL); |
778 | raise(num); |
c1ffd5ba |
779 | return; |
86418a84 |
780 | } |
0881206b |
781 | segvlog("segv %d %p @ %08x\n", info->si_code, info->si_addr, regs[15]); |
86418a84 |
782 | |
783 | // spit PC and op |
6720e4e4 |
784 | op_ctx = (void *)g_code_ptr; |
785 | op_ctx->pc = (u32)pc; |
786 | op_ctx->op = *pc; |
787 | g_code_ptr = &op_ctx->code[0]; |
86418a84 |
788 | |
789 | // emit jump to code ptr |
6720e4e4 |
790 | *pc = make_jmp(pc, g_code_ptr, 0); |
86418a84 |
791 | |
792 | // generate code: |
6720e4e4 |
793 | // TODO: multithreading |
794 | emit_op_io(0xe50f0000, &g_linkpage->saved_regs[0]); // str r0, [->saved_regs[0]] @ save r0 |
795 | emit_op_io(0xe50fe000, &g_linkpage->saved_regs[14]); // str r14, [->saved_regs[14]] |
796 | emit_op (0xe24f0000 + (g_code_ptr - (u32 *)op_ctx + 2) * 4); // sub r0, pc, #op_ctx |
797 | emit_op (make_jmp(g_code_ptr, &g_linkpage->code[0], 1)); // bl common_code |
798 | emit_op_io(0xe51fe000, &g_linkpage->saved_regs[14]); // ldr r14, [->saved_regs[14]] |
799 | emit_op (make_jmp(g_code_ptr, pc + 1, 0)); // jmp <back> |
86418a84 |
800 | |
801 | // sync caches |
802 | sys_cacheflush(pc, pc + 1); |
803 | sys_cacheflush(g_linkpage, g_code_ptr); |
804 | |
805 | lp_size = (char *)g_code_ptr - (char *)g_linkpage; |
0881206b |
806 | segvlog("code #%d %d/%d\n", g_linkpage_count, lp_size, LINKPAGE_SIZE); |
86418a84 |
807 | |
808 | if (lp_size + 13*4 > LINKPAGE_SIZE) { |
809 | g_linkpage_count++; |
810 | if (g_linkpage_count >= LINKPAGE_COUNT) { |
6720e4e4 |
811 | err("too many linkpages needed\n"); |
86418a84 |
812 | abort(); |
813 | } |
814 | g_linkpage = (void *)((char *)g_linkpage + LINKPAGE_SIZE); |
815 | init_linkpage(); |
816 | } |
817 | //handle_op(regs[15], op, regs, (u32)info->si_addr); |
818 | //regs[15] += 4; |
819 | } |
11913091 |
820 | |
821 | void emu_init(void *map_bottom) |
822 | { |
7fd42181 |
823 | sigaction_t segv_action = { |
11913091 |
824 | .sa_sigaction = segv_sigaction, |
825 | .sa_flags = SA_SIGINFO, |
826 | }; |
c1ffd5ba |
827 | pthread_t tid; |
6720e4e4 |
828 | void *pret; |
829 | int ret; |
11913091 |
830 | |
c1ffd5ba |
831 | g_handler_stack_end = (void *)((long)alloca(1536 * 1024) & ~0xffff); |
832 | log("handler stack @ %p (current %p)\n", g_handler_stack_end, &ret); |
833 | // touch it now. If we crash now we'll know why |
834 | *((char *)g_handler_stack_end - 4096) = 1; |
6720e4e4 |
835 | |
86418a84 |
836 | g_linkpage = (void *)(((u32)map_bottom - LINKPAGE_ALLOC) & ~0xfff); |
7fd42181 |
837 | pret = mmap(g_linkpage, LINKPAGE_ALLOC, PROT_READ|PROT_WRITE, |
838 | MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); |
6720e4e4 |
839 | if (pret != g_linkpage) { |
840 | perror(PFX "mmap linkpage"); |
11913091 |
841 | exit(1); |
842 | } |
c1ffd5ba |
843 | log("linkpages @ %p\n", g_linkpage); |
86418a84 |
844 | init_linkpage(); |
11913091 |
845 | |
3d295a9f |
846 | // host stuff |
2ce69bdf |
847 | ret = host_video_init(&host_stride, 0); |
848 | if (ret != 0) { |
7fd42181 |
849 | err("can't init video\n"); |
3d295a9f |
850 | exit(1); |
851 | } |
2ce69bdf |
852 | host_screen = host_video_flip(); |
c1ffd5ba |
853 | |
854 | ret = pthread_create(&tid, NULL, fb_sync_thread, NULL); |
855 | if (ret != 0) { |
856 | err("failed to create fb_sync_thread: %d\n", ret); |
857 | exit(1); |
858 | } |
859 | pthread_detach(tid); |
860 | |
861 | // mmsp2 defaults |
862 | mmsp2.mlc_stl_adr = 0x03101000; // fb2 is at 0x03381000 |
7fd42181 |
863 | mmsp2.mlc_stl_cntl = 0x4ab; // 16bpp, region 1 active |
c1ffd5ba |
864 | |
865 | sigemptyset(&segv_action.sa_mask); |
866 | sigaction(SIGSEGV, &segv_action, NULL); |
3d295a9f |
867 | } |
868 | |
869 | int emu_read_gpiodev(void *buf, int count) |
870 | { |
871 | unsigned int btns; |
872 | |
873 | if (count < 4) { |
6720e4e4 |
874 | err("gpiodev read %d?\n", count); |
3d295a9f |
875 | return -1; |
876 | } |
877 | |
878 | btns = host_read_btns(); |
879 | memcpy(buf, &btns, 4); |
880 | return 4; |
11913091 |
881 | } |
882 | |
dc90c02d |
883 | struct dev_fd_t emu_interesting_fds[] = { |
884 | [IFD_SOUND] = { "/dev/dsp", -1 }, |
885 | { NULL, 0 }, |
886 | }; |
887 | |
888 | static void *emu_mmap_dev(unsigned int length, int prot, int flags, unsigned int offset) |
11913091 |
889 | { |
3d295a9f |
890 | struct uppermem_block *umem; |
11913091 |
891 | char name[32]; |
892 | int fd; |
893 | |
3d295a9f |
894 | // SoC regs |
11913091 |
895 | if ((offset & ~0xffff) == 0xc0000000) { |
896 | return mmap((void *)0x7f000000, length, PROT_NONE, |
897 | MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED|MAP_NORESERVE, -1, 0); |
898 | } |
3d295a9f |
899 | // blitter |
11913091 |
900 | if ((offset & ~0xffff) == 0xe0020000) { |
901 | return mmap((void *)0x7f100000, length, PROT_NONE, |
902 | MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED|MAP_NORESERVE, -1, 0); |
903 | } |
3d295a9f |
904 | // upper mem |
905 | if ((offset & 0xfe000000) != 0x02000000) |
6720e4e4 |
906 | err("unexpected devmem mmap @ %08x\n", offset); |
11913091 |
907 | |
3d295a9f |
908 | umem = calloc(1, sizeof(*umem)); |
909 | if (umem == NULL) { |
c1ffd5ba |
910 | err("OOM\n"); |
3d295a9f |
911 | return MAP_FAILED; |
912 | } |
913 | |
914 | umem->addr = offset; |
915 | umem->size = length; |
916 | umem->mem = mmap(NULL, length, prot, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); |
917 | if (umem->mem != MAP_FAILED) |
918 | goto done; |
919 | |
c1ffd5ba |
920 | log("upper mem @ %08x %d mmap fail, trying backing file\n", offset, length); |
11913091 |
921 | sprintf(name, "m%08x", offset); |
922 | fd = open(name, O_CREAT|O_RDWR, 0644); |
923 | lseek(fd, length - 1, SEEK_SET); |
924 | name[0] = 0; |
925 | write(fd, name, 1); |
926 | |
3d295a9f |
927 | umem->mem = mmap(NULL, length, prot, MAP_SHARED, fd, 0); |
928 | if (umem->mem == MAP_FAILED) { |
6720e4e4 |
929 | err("failed, giving up\n"); |
3d295a9f |
930 | close(fd); |
931 | free(umem); |
dc90c02d |
932 | errno = EINVAL; |
3d295a9f |
933 | return MAP_FAILED; |
934 | } |
935 | |
936 | done: |
c1ffd5ba |
937 | log("upper mem @ %08x %d\n", offset, length); |
3d295a9f |
938 | umem->next = upper_mem; |
939 | upper_mem = umem; |
940 | return umem->mem; |
11913091 |
941 | } |
942 | |
dc90c02d |
943 | void *emu_do_mmap(unsigned int length, int prot, int flags, int fd, unsigned int offset) |
944 | { |
945 | if (fd == FAKEDEV_MEM) |
946 | return emu_mmap_dev(length, prot, flags, offset); |
947 | |
948 | if (fd == FAKEDEV_FB0) |
949 | return emu_mmap_dev(length, prot, flags, offset + 0x03101000); |
950 | |
951 | if (fd == FAKEDEV_FB1) |
952 | return emu_mmap_dev(length, prot, flags, offset + 0x03381000); |
953 | |
7fd42181 |
954 | err("bad/ni mmap(?, %d, %x, %x, %d, %08x)\n", length, prot, flags, fd, offset); |
dc90c02d |
955 | errno = EINVAL; |
956 | return MAP_FAILED; |
957 | } |
958 | |
dc90c02d |
959 | static int emu_sound_ioctl(int fd, int request, void *argp) |
960 | { |
961 | int *arg = argp; |
962 | |
963 | #if 0 |
964 | dbg("snd ioctl(%d, %08x, %p)", fd, request, argp); |
965 | if (arg != NULL) |
966 | dbg_c(" [%d]", *arg); |
967 | dbg_c("\n"); |
968 | #endif |
969 | |
970 | /* People set strange frag settings on GP2X, which even manage |
971 | * to break audio on pandora (causes writes to fail). |
972 | * Catch this and set to something that works. */ |
973 | if (request == SNDCTL_DSP_SPEED) { |
974 | int ret, bsize, frag; |
975 | |
976 | // ~4ms. gpSP wants small buffers or else it stutters |
977 | // because of it's audio thread sync stuff |
978 | bsize = *arg / 250 * 4; |
979 | for (frag = 0; bsize; bsize >>= 1, frag++) |
980 | ; |
981 | |
982 | frag |= 16 << 16; // fragment count |
983 | ret = ioctl(fd, SNDCTL_DSP_SETFRAGMENT, &frag); |
984 | if (ret != 0) { |
985 | err("snd ioctl SETFRAGMENT %08x: ", frag); |
986 | perror(NULL); |
987 | } |
988 | } |
989 | else if (request == SNDCTL_DSP_SETFRAGMENT) |
990 | return 0; |
991 | |
992 | return ioctl(fd, request, argp); |
993 | } |
994 | |
dc90c02d |
995 | int emu_do_ioctl(int fd, int request, void *argp) |
996 | { |
997 | if (fd == emu_interesting_fds[IFD_SOUND].fd) |
998 | return emu_sound_ioctl(fd, request, argp); |
999 | |
7fd42181 |
1000 | switch (fd) { |
1001 | /* *********************** */ |
1002 | case FAKEDEV_FB0: |
1003 | case FAKEDEV_FB1: |
1004 | if (argp == NULL) |
1005 | goto fail; |
dc90c02d |
1006 | |
dc90c02d |
1007 | switch (request) { |
1008 | case FBIOGET_FSCREENINFO: { |
1009 | struct fb_fix_screeninfo *fix = argp; |
1010 | |
1011 | memset(fix, 0, sizeof(*fix)); |
1012 | strcpy(fix->id, "mmsp2_RGB0"); |
1013 | fix->type = FB_TYPE_PACKED_PIXELS; |
1014 | fix->accel = FB_ACCEL_NONE; |
7fd42181 |
1015 | fix->visual = FB_VISUAL_TRUECOLOR; |
1016 | fix->line_length = 320*2; |
dc90c02d |
1017 | fix->smem_start = (fd == FAKEDEV_FB0) ? 0x03101000 : 0x03381000; |
1018 | fix->smem_len = 320*240*2; |
1019 | return 0; |
1020 | } |
1021 | case FBIOGET_VSCREENINFO: { |
1022 | struct fb_var_screeninfo *var = argp; |
7fd42181 |
1023 | static const struct fb_bitfield fbb_red = { offset: 11, length: 5, }; |
1024 | static const struct fb_bitfield fbb_green = { offset: 5, length: 6, }; |
1025 | static const struct fb_bitfield fbb_blue = { offset: 0, length: 5, }; |
dc90c02d |
1026 | |
1027 | memset(var, 0, sizeof(*var)); |
1028 | var->activate = FB_ACTIVATE_NOW; |
1029 | var->xres = |
1030 | var->xres_virtual = 320; |
1031 | var->yres = |
1032 | var->yres_virtual = 240; |
1033 | var->width = |
1034 | var->height = -1; |
1035 | var->vmode = FB_VMODE_NONINTERLACED; |
1036 | var->bits_per_pixel = 16; |
1037 | var->red = fbb_red; |
1038 | var->green = fbb_green; |
1039 | var->blue = fbb_blue; |
1040 | return 0; |
1041 | } |
7fd42181 |
1042 | case FBIOPUT_VSCREENINFO: { |
1043 | struct fb_var_screeninfo *var = argp; |
1044 | dbg(" put vscreen: %dx%d@%d\n", var->xres, var->yres, var->bits_per_pixel); |
1045 | if (var->xres != 320 || var->yres != 240 || var->bits_per_pixel != 16) |
1046 | return -1; |
1047 | return 0; |
1048 | } |
dc90c02d |
1049 | } |
7fd42181 |
1050 | |
1051 | /* *********************** */ |
1052 | case FAKEDEV_TTY0: |
1053 | // fake tty0 to make GPH SDL happy |
1054 | if (request == 0x4b46) // KDGKBENT |
1055 | return -1; |
1056 | return 0; |
dc90c02d |
1057 | } |
1058 | |
1059 | fail: |
7fd42181 |
1060 | err("bad/ni ioctl(%d, %08x, %p)\n", fd, request, argp); |
dc90c02d |
1061 | errno = EINVAL; |
1062 | return -1; |
1063 | } |
1064 | |
7fd42181 |
1065 | static const struct { |
1066 | const char *from; |
1067 | const char *to; |
1068 | } path_map[] = { |
1069 | { "/mnt/tmp/", "/tmp/" }, |
1070 | }; |
1071 | |
1072 | // FIXME: threads.. |
1073 | static const char *wrap_path(const char *path) |
1074 | { |
1075 | static char tmp_path[512]; |
1076 | int i, len; |
1077 | |
1078 | // do only path mapping for now |
1079 | for (i = 0; i < ARRAY_SIZE(path_map); i++) { |
1080 | len = strlen(path_map[i].from); |
1081 | if (strncmp(path, path_map[i].from, len) == 0) { |
1082 | snprintf(tmp_path, sizeof(tmp_path), "%s%s", path_map[i].to, path + len); |
1083 | dbg("mapped path \"%s\" -> \"%s\"\n", path, tmp_path); |
1084 | return tmp_path; |
1085 | } |
1086 | } |
1087 | |
1088 | return path; |
1089 | } |
1090 | |
1091 | void *emu_do_fopen(const char *path, const char *mode) |
1092 | { |
1093 | return fopen(wrap_path(path), mode); |
1094 | } |
1095 | |
1096 | int emu_do_system(const char *command) |
1097 | { |
1098 | static char tmp_path[512]; |
1099 | char *p, *p2; |
1100 | |
1101 | if (command == NULL) |
1102 | return -1; |
1103 | |
1104 | // pass through stuff in PATH |
1105 | p = strchr(command, ' '); |
1106 | p2 = strchr(command, '/'); |
1107 | if (p2 == NULL || (p != NULL && p2 > p)) |
1108 | return system(command); |
1109 | |
1110 | make_local_path(tmp_path, sizeof(tmp_path), "ginge_prep"); |
1111 | p = tmp_path + strlen(tmp_path); |
1112 | |
1113 | snprintf(p, sizeof(tmp_path) - (p - tmp_path), " %s", wrap_path(command)); |
1114 | dbg("system: \"%s\"\n", tmp_path); |
1115 | return system(tmp_path); |
1116 | } |
1117 | |