499bf01c |
1 | /* |
2 | * GINGE - GINGE Is Not Gp2x Emulator |
fea1465c |
3 | * (C) notaz, 2010-2011,2016 |
499bf01c |
4 | * |
5 | * This work is licensed under the MAME license, see COPYING file for details. |
6 | */ |
830ba1bf |
7 | // a "gentle" reminder |
8 | #ifdef __ARM_EABI__ |
9 | #error loader is meant to be OABI! |
10 | #endif |
11913091 |
11 | #include <stdio.h> |
12 | #include <stdlib.h> |
3d295a9f |
13 | #include <string.h> |
c1ffd5ba |
14 | #include <alloca.h> |
158ddd8d |
15 | #include <ctype.h> |
11913091 |
16 | #include <sys/types.h> |
17 | #include <sys/stat.h> |
18 | #include <fcntl.h> |
19 | #include <sys/mman.h> |
20 | #include <sys/types.h> |
21 | #include <unistd.h> |
22 | #include <signal.h> |
23 | #include <asm/ucontext.h> |
c1ffd5ba |
24 | #include <errno.h> |
25 | #include <time.h> |
d0b9b0df |
26 | #include <sched.h> |
c1ffd5ba |
27 | #include <sys/resource.h> |
7fd42181 |
28 | #include <sys/ioctl.h> |
d0b9b0df |
29 | #include <sys/syscall.h> |
7fd42181 |
30 | #include <linux/soundcard.h> |
31 | #include <linux/fb.h> |
d0b9b0df |
32 | #include <linux/futex.h> |
11913091 |
33 | |
34 | #include "header.h" |
7fd42181 |
35 | #include "../common/host_fb.h" |
36 | #include "../common/cmn.h" |
d0b9b0df |
37 | #include "syscalls.h" |
7fd42181 |
38 | #include "realfuncs.h" |
d0b9b0df |
39 | #include "llibc.h" |
11913091 |
40 | |
3d3fa63b |
41 | #if (DBG & 2) && !(DBG & 4) |
7fd42181 |
42 | #define LOG_IO_UNK |
43 | #endif |
3d3fa63b |
44 | #if (DBG & 4) |
7fd42181 |
45 | #define LOG_IO |
46 | #endif |
6720e4e4 |
47 | //#define LOG_SEGV |
48 | |
49 | #ifdef LOG_IO |
50 | #define iolog log_io |
51 | #else |
86418a84 |
52 | #define iolog(...) |
6720e4e4 |
53 | #endif |
54 | |
c1ffd5ba |
55 | #ifdef LOG_IO_UNK |
6720e4e4 |
56 | #define iolog_unh log_io |
57 | #else |
58 | #define iolog_unh(...) |
59 | #endif |
60 | |
61 | #ifdef LOG_SEGV |
d0b9b0df |
62 | #define segvlog g_printf |
6720e4e4 |
63 | #else |
0881206b |
64 | #define segvlog(...) |
6720e4e4 |
65 | #endif |
66 | |
c1ffd5ba |
67 | #if defined(LOG_IO) || defined(LOG_IO_UNK) |
6720e4e4 |
68 | #include "mmsp2-regs.h" |
69 | #endif |
11913091 |
70 | |
3d3fa63b |
71 | typedef unsigned long long u64; |
11913091 |
72 | typedef unsigned int u32; |
73 | typedef unsigned short u16; |
74 | typedef unsigned char u8; |
75 | |
d0b9b0df |
76 | #define THREAD_STACK_SIZE 0x200000 |
77 | |
78 | static int fb_sync_thread_paused; |
79 | static int fb_sync_thread_futex; |
c1ffd5ba |
80 | |
890c1dc5 |
81 | static int emu_is_dl; |
82 | |
3d295a9f |
83 | static struct { |
84 | u32 dstctrl; |
85 | u32 dstaddr; |
86 | u32 dststride; |
87 | u32 srcctrl; |
88 | u32 srcaddr; // |
89 | u32 srcstride; |
90 | u32 srcforcolor; |
91 | u32 srcbackcolor; |
92 | u32 patctrl; // |
93 | u32 patforcolor; |
94 | u32 patbackcolor; |
95 | u32 size; |
96 | u32 ctrl; // |
97 | u32 run; |
98 | u32 intc; |
99 | u32 srcfifo; |
100 | } blitter; |
101 | |
0881206b |
102 | #define SRCCTRL_INVIDEO (1 << 8) |
103 | #define SRCCTRL_SRCENB (1 << 7) |
104 | #define CTRL_TRANSPARENCYENB (1 << 11) |
105 | |
3d295a9f |
106 | static struct { |
7000b522 |
107 | // mmsp2 |
6720e4e4 |
108 | u16 mlc_stl_cntl; |
3d295a9f |
109 | union { |
7000b522 |
110 | u32 mlc_stl_adr; // mlcaddress for pollux |
3d295a9f |
111 | struct { |
6720e4e4 |
112 | u16 mlc_stl_adrl; |
113 | u16 mlc_stl_adrh; |
3d295a9f |
114 | }; |
115 | }; |
6720e4e4 |
116 | u16 mlc_stl_pallt_a; |
117 | union { |
118 | u16 mlc_stl_pallt_d[256*2]; |
119 | u32 mlc_stl_pallt_d32[256]; |
120 | }; |
121 | |
7000b522 |
122 | // pollux |
123 | u32 mlccontrol; |
124 | u16 mlcpalette[256]; |
125 | |
6720e4e4 |
126 | // state |
3d3fa63b |
127 | void *umem; |
6720e4e4 |
128 | u32 old_mlc_stl_adr; |
7000b522 |
129 | u32 btn_state; // as seen through /dev/GPIO: 0PVdVu YXBA RLSeSt 0Ri0Dn 0Le0Up |
130 | struct { |
131 | u32 width, height; |
132 | u32 stride; |
133 | u32 bpp; |
134 | u32 dirty_pal:2; |
135 | } v; |
3d295a9f |
136 | } mmsp2; |
7000b522 |
137 | #define pollux mmsp2 // so that code doesn't look that weird |
138 | enum { |
139 | DIRTY_PAL_MMSP2 = 1, |
140 | DIRTY_PAL_POLLUX = 2, |
141 | }; |
3d295a9f |
142 | |
11913091 |
143 | |
c1ffd5ba |
144 | #if defined(LOG_IO) || defined(LOG_IO_UNK) |
6720e4e4 |
145 | static void log_io(const char *pfx, u32 a, u32 d, int size) |
146 | { |
147 | const char *fmt, *reg = ""; |
148 | switch (size) { |
c1ffd5ba |
149 | case 8: fmt = "%s %08x %02x %s\n"; d &= 0xff; break; |
150 | case 32: fmt = "%s %08x %08x %s\n"; break; |
151 | default: fmt = "%s %08x %04x %s\n"; d &= 0xffff; break; |
6720e4e4 |
152 | } |
153 | |
154 | if ((a & ~0xffff) == 0x7f000000) |
155 | reg = regnames[a & 0xffff]; |
156 | |
d0b9b0df |
157 | g_printf(fmt, pfx, a, d, reg); |
6720e4e4 |
158 | } |
159 | #endif |
160 | |
0881206b |
161 | static void memset16(void *dst, u32 pattern, int count) |
162 | { |
163 | u32 *dl; |
164 | u16 *d; |
165 | |
166 | d = (u16 *)((long)dst & ~1); |
167 | if ((long)d & 2) { |
168 | *d++ = pattern; |
169 | count--; |
170 | } |
171 | dl = (void *)d; |
172 | pattern |= pattern << 16; |
173 | |
174 | while (count >= 2) { |
175 | *dl++ = pattern; |
176 | count -= 2; |
177 | } |
178 | if (count) |
179 | *(u16 *)dl = pattern; |
180 | } |
181 | |
182 | static void blt_tr(void *dst, void *src, u32 trc, int w) |
183 | { |
184 | u16 *d = (u16 *)((long)dst & ~1); |
185 | u16 *s = (u16 *)((long)src & ~1); |
186 | |
187 | // XXX: optimize |
188 | for (; w > 0; d++, s++, w--) |
189 | if (*s != trc) |
190 | *d = *s; |
191 | } |
192 | |
193 | #define dump_blitter() \ |
194 | { \ |
195 | u32 *r = &blitter.dstctrl; \ |
196 | int i; \ |
197 | for (i = 0; i < 4*4; i++, r++) { \ |
d0b9b0df |
198 | g_printf("%08x ", *r); \ |
0881206b |
199 | if ((i & 3) == 3) \ |
d0b9b0df |
200 | g_printf("\n"); \ |
0881206b |
201 | } \ |
202 | } |
203 | |
6720e4e4 |
204 | static void *uppermem_lookup(u32 addr, u8 **mem_end) |
11913091 |
205 | { |
3d3fa63b |
206 | // XXX: maybe support mirroring? |
207 | if ((addr & 0xfe000000) != 0x02000000) |
208 | return NULL; |
3d295a9f |
209 | |
3d3fa63b |
210 | *mem_end = (u8 *)mmsp2.umem + 0x02000000; |
211 | return (u8 *)mmsp2.umem - 0x02000000 + addr; |
11913091 |
212 | } |
213 | |
3d295a9f |
214 | static void blitter_do(void) |
11913091 |
215 | { |
0881206b |
216 | u8 *dst, *dste, *src = NULL, *srce = NULL; |
3d295a9f |
217 | int w, h, sstrd, dstrd; |
6720e4e4 |
218 | int to_screen = 0; |
dc90c02d |
219 | u32 bpp, addr; |
3d295a9f |
220 | |
221 | w = blitter.size & 0x7ff; |
222 | h = (blitter.size >> 16) & 0x7ff; |
223 | sstrd = blitter.srcstride; |
224 | dstrd = blitter.dststride; |
225 | |
0881206b |
226 | // XXX: need to confirm this.. |
227 | addr = (blitter.dstaddr & ~3) | ((blitter.dstctrl & 0x1f) >> 3); |
c1ffd5ba |
228 | |
dc90c02d |
229 | // use dst bpp.. How does it do blits with different src bpp? |
230 | bpp = (blitter.dstctrl & 0x20) ? 16 : 8; |
231 | |
c1ffd5ba |
232 | // maybe the screen? |
dc90c02d |
233 | if (((w == 320 && h == 240) || // blit whole screen |
234 | (w * h >= 320*240/2)) && // ..or at least half of the area |
235 | mmsp2.mlc_stl_adr <= addr && addr < mmsp2.mlc_stl_adr + 320*240*2) |
c1ffd5ba |
236 | to_screen = 1; |
237 | |
238 | dst = uppermem_lookup(addr, &dste); |
0881206b |
239 | |
240 | // XXX: assume fill if no SRCENB, but it could be pattern blit.. |
241 | if (blitter.srcctrl & SRCCTRL_SRCENB) { |
242 | if (!(blitter.srcctrl & SRCCTRL_INVIDEO)) |
243 | goto bad_blit; |
244 | |
245 | addr = (blitter.srcaddr & ~3) | ((blitter.srcctrl & 0x1f) >> 3); |
c1ffd5ba |
246 | src = uppermem_lookup(addr, &srce); |
0881206b |
247 | if (src == NULL) |
248 | goto bad_blit; |
249 | |
250 | if (src + sstrd * h > srce) { |
6720e4e4 |
251 | err("blit %08x->%08x %dx%d did not fit src\n", |
0881206b |
252 | blitter.srcaddr, blitter.dstaddr, w, h); |
253 | h = (srce - src) / sstrd; |
254 | } |
3d295a9f |
255 | } |
256 | |
dc90c02d |
257 | if (dst == NULL) |
258 | goto bad_blit; |
259 | |
3d295a9f |
260 | if (dst + dstrd * h > dste) { |
6720e4e4 |
261 | err("blit %08x->%08x %dx%d did not fit dst\n", |
3d295a9f |
262 | blitter.srcaddr, blitter.dstaddr, w, h); |
263 | h = (dste - dst) / dstrd; |
264 | } |
265 | |
0881206b |
266 | if (src != NULL) { |
267 | // copy |
dc90c02d |
268 | if (bpp == 16 && (blitter.ctrl & CTRL_TRANSPARENCYENB)) { |
0881206b |
269 | u32 trc = blitter.ctrl >> 16; |
270 | for (; h > 0; h--, dst += dstrd, src += sstrd) |
271 | blt_tr(dst, src, trc, w); |
272 | } |
273 | else { |
274 | for (; h > 0; h--, dst += dstrd, src += sstrd) |
dc90c02d |
275 | memcpy(dst, src, w * bpp / 8); |
0881206b |
276 | } |
3d295a9f |
277 | } |
0881206b |
278 | else { |
279 | // fill. Assume the pattern is cleared and bg color is used |
280 | u32 bgc = blitter.patbackcolor & 0xffff; |
dc90c02d |
281 | if (bpp == 16) { |
282 | for (; h > 0; h--, dst += dstrd) |
283 | memset16(dst, bgc, w); |
284 | } |
285 | else { |
286 | for (; h > 0; h--, dst += dstrd) |
287 | memset(dst, bgc, w); // bgc? |
288 | } |
0881206b |
289 | } |
6720e4e4 |
290 | |
d0b9b0df |
291 | if (to_screen) { |
292 | fb_sync_thread_futex = 1; |
293 | g_futex_raw(&fb_sync_thread_futex, FUTEX_WAKE, 1, NULL); |
294 | } |
0881206b |
295 | return; |
3d295a9f |
296 | |
0881206b |
297 | bad_blit: |
6720e4e4 |
298 | err("blit %08x->%08x %dx%d translated to %p->%p\n", |
0881206b |
299 | blitter.srcaddr, blitter.dstaddr, w, h, src, dst); |
300 | dump_blitter(); |
3d295a9f |
301 | } |
302 | |
4d045184 |
303 | // FIXME: pass real dimensions to blitters |
7000b522 |
304 | static void mlc_flip(void *src, int bpp, int stride) |
6720e4e4 |
305 | { |
6ca08393 |
306 | static int old_bpp; |
6720e4e4 |
307 | |
4d045184 |
308 | // only pass pal to host if it's dirty |
7000b522 |
309 | if (bpp <= 8 && mmsp2.v.dirty_pal) { |
310 | if (mmsp2.v.dirty_pal == DIRTY_PAL_MMSP2) |
311 | host_video_update_pal32(mmsp2.mlc_stl_pallt_d32); |
312 | else |
313 | host_video_update_pal16(mmsp2.mlcpalette); |
314 | mmsp2.v.dirty_pal = 0; |
6720e4e4 |
315 | } |
316 | |
6ca08393 |
317 | if (bpp != old_bpp) { |
318 | host_video_change_bpp(bpp); |
319 | old_bpp = bpp; |
320 | } |
321 | |
6720e4e4 |
322 | switch (bpp) { |
323 | case 4: |
7000b522 |
324 | host_video_blit4(src, 320, 240, stride); |
6720e4e4 |
325 | break; |
326 | |
327 | case 8: |
7000b522 |
328 | host_video_blit8(src, 320, 240, stride); |
6720e4e4 |
329 | break; |
330 | |
331 | case 16: |
7000b522 |
332 | host_video_blit16(src, 320, 240, stride); |
6720e4e4 |
333 | break; |
334 | |
335 | case 24: |
336 | // TODO |
337 | break; |
338 | } |
6720e4e4 |
339 | } |
340 | |
c1ffd5ba |
341 | static void *fb_sync_thread(void *arg) |
342 | { |
d0b9b0df |
343 | unsigned long sigmask[2] = { ~0ul, ~0ul }; |
344 | struct timespec ts = { 0, 0 }; |
c1ffd5ba |
345 | int invalid_fb_addr = 1; |
346 | int manual_refresh = 0; |
7000b522 |
347 | int frame_counter = 0; |
d0b9b0df |
348 | int wait_ret; |
349 | |
350 | // this thread can't run any signal handlers since the |
351 | // app's stack/tls stuff will never be set up here |
352 | sigmask[0] &= ~(1ul << (SIGSEGV - 1)); |
353 | g_rt_sigprocmask_raw(SIG_SETMASK, sigmask, NULL, sizeof(sigmask)); |
c1ffd5ba |
354 | |
c1ffd5ba |
355 | //ret = setpriority(PRIO_PROCESS, 0, -1); |
356 | //log("setpriority %d\n", ret); |
357 | |
d0b9b0df |
358 | // tell the main thread we're done init |
359 | fb_sync_thread_futex = 0; |
360 | g_futex_raw(&fb_sync_thread_futex, FUTEX_WAKE, 1, NULL); |
c1ffd5ba |
361 | |
362 | while (1) { |
363 | u8 *gp2x_fb, *gp2x_fb_end; |
c1ffd5ba |
364 | |
d0b9b0df |
365 | wait_ret = g_futex_raw(&fb_sync_thread_futex, FUTEX_WAIT, 0, &ts); |
dc90c02d |
366 | |
d0b9b0df |
367 | // this is supposed to be done atomically, but to make life |
368 | // easier ignore it for now, race impact is low anyway |
369 | fb_sync_thread_futex = 0; |
370 | |
371 | if (wait_ret != 0 && wait_ret != -EWOULDBLOCK |
372 | && wait_ret != -ETIMEDOUT) |
373 | { |
374 | err("fb_thread: futex error: %d\n", wait_ret); |
b4f4cb40 |
375 | sleep(1); |
7000b522 |
376 | goto check_keys; |
c1ffd5ba |
377 | } |
db9191ed |
378 | if (fb_sync_thread_paused) { |
d0b9b0df |
379 | ts.tv_nsec = 100000000; |
7000b522 |
380 | goto check_keys; |
db9191ed |
381 | } |
c1ffd5ba |
382 | |
d0b9b0df |
383 | if (wait_ret == 0) { |
384 | ts.tv_nsec = 50000000; |
c1ffd5ba |
385 | manual_refresh++; |
386 | if (manual_refresh == 2) |
4d045184 |
387 | dbg("fb_thread: switch to manual refresh\n"); |
c1ffd5ba |
388 | } else { |
d0b9b0df |
389 | ts.tv_nsec = 16666667; |
c1ffd5ba |
390 | if (manual_refresh > 1) |
4d045184 |
391 | dbg("fb_thread: switch to auto refresh\n"); |
c1ffd5ba |
392 | manual_refresh = 0; |
393 | } |
394 | |
c1ffd5ba |
395 | gp2x_fb = uppermem_lookup(mmsp2.mlc_stl_adr, &gp2x_fb_end); |
7000b522 |
396 | if (gp2x_fb == NULL || gp2x_fb + 320*240 * mmsp2.v.bpp / 8 > gp2x_fb_end) { |
c1ffd5ba |
397 | if (!invalid_fb_addr) { |
398 | err("fb_thread: %08x is out of range\n", mmsp2.mlc_stl_adr); |
399 | invalid_fb_addr = 1; |
400 | } |
401 | continue; |
402 | } |
403 | |
7000b522 |
404 | invalid_fb_addr = 0; |
405 | mlc_flip(gp2x_fb, mmsp2.v.bpp, mmsp2.v.stride); |
406 | |
407 | frame_counter++; |
408 | if (frame_counter & 0x0f) |
409 | continue; |
410 | |
411 | check_keys: |
412 | // this is to check for kill key, in case main thread hung |
413 | // or something else went wrong. |
414 | pollux.btn_state = host_read_btns(); |
c1ffd5ba |
415 | } |
416 | } |
417 | |
db9191ed |
418 | static void fb_thread_pause(void) |
419 | { |
420 | fb_sync_thread_paused = 1; |
421 | // wait until it finishes last refresh |
422 | // that it might be doing now |
423 | usleep(10000); |
424 | } |
425 | |
426 | static void fb_thread_resume(void) |
427 | { |
428 | fb_sync_thread_paused = 0; |
429 | } |
430 | |
7000b522 |
431 | static u32 xread32_io_cmn(u32 a, u32 *handled) |
432 | { |
26d2801c |
433 | struct timespec ts; |
7000b522 |
434 | u32 d = 0; |
435 | |
436 | *handled = 1; |
437 | switch (a) { |
438 | // Wiz stuff |
26d2801c |
439 | case 0x1980: // TIMER3 TMRCOUNT |
440 | // assume the timer is set up for microsec time |
441 | g_clock_gettime_raw(CLOCK_REALTIME, &ts); |
442 | d = ts.tv_sec * 1000000 + ((u64)(u32)ts.tv_nsec * 4294968 >> 32); |
443 | break; |
7000b522 |
444 | case 0x402c: // MLCVSTRIDE0 |
445 | case 0x4060: // MLCVSTRIDE1 |
446 | d = pollux.v.stride; |
447 | break; |
448 | case 0x4038: // MLCADDRESS0 |
449 | case 0x406c: // MLCADDRESS1 |
450 | d = pollux.mlc_stl_adr; |
451 | break; |
452 | // wiz_lib reads: |
453 | // ???? ???? YXBA DURiLe ???? VdVuMS LR?? ???? |
454 | // | GPIOC[31:16] | GPIOB[31:16] | |
455 | case 0xa058: // GPIOBPAD |
830ba1bf |
456 | d = (pollux.btn_state >> 1) & 0x0100; |
457 | d |= (pollux.btn_state << 1) & 0x0200; |
7000b522 |
458 | d |= (pollux.btn_state >> 3) & 0x0080; |
459 | d |= (pollux.btn_state >> 5) & 0x0040; |
460 | d |= (pollux.btn_state >> 6) & 0x0c00; |
461 | d <<= 16; |
462 | d = ~d; |
463 | break; |
464 | case 0xa098: // GPIOCPAD |
465 | pollux.btn_state = host_read_btns(); |
466 | d = (pollux.btn_state >> 8) & 0x00f0; |
467 | d |= (pollux.btn_state >> 1) & 0x0008; |
468 | d |= (pollux.btn_state << 2) & 0x0004; |
469 | d |= (pollux.btn_state >> 5) & 0x0002; |
470 | d |= (pollux.btn_state >> 2) & 0x0001; |
471 | d <<= 16; |
472 | d = ~d; |
473 | break; |
474 | default: |
475 | *handled = 0; |
476 | break; |
477 | } |
478 | |
479 | return d; |
480 | } |
481 | |
3d295a9f |
482 | static u32 xread8(u32 a) |
483 | { |
6720e4e4 |
484 | iolog("r8 ", a, 0, 8); |
485 | iolog_unh("r8 ", a, 0, 8); |
3d295a9f |
486 | return 0; |
11913091 |
487 | } |
488 | |
489 | static u32 xread16(u32 a) |
490 | { |
6720e4e4 |
491 | static u32 fudge, old_a; |
492 | u32 d = 0, t; |
493 | |
494 | if ((a & 0xffff0000) == 0x7f000000) { |
495 | u32 a_ = a & 0xffff; |
496 | switch (a_) { |
497 | case 0x0910: // FPLL |
498 | case 0x0912: |
499 | d = 0x9407; |
500 | break; |
501 | // minilib reads as: |
7000b522 |
502 | // 0000 P000 VuVd00 0000 YXBA RLSeSt 0Ri0D 0Le0U |
503 | // | GPIOD |GPIOC[8:15]|GPIOM[0:7] | |
6720e4e4 |
504 | // /dev/GPIO: |
505 | // ... 0PVdVu ... |
506 | case 0x1184: // GPIOC |
507 | d = ~mmsp2.btn_state & 0xff00; |
508 | d |= 0x00ff; |
509 | break; |
510 | case 0x1186: // GPIOD |
511 | t = ~mmsp2.btn_state; |
512 | d = (t >> 9) & 0x0080; |
513 | d |= (t >> 11) & 0x0040; |
514 | d |= (t >> 7) & 0x0800; |
515 | d |= 0x373b; |
516 | break; |
517 | case 0x1198: // GPIOM |
518 | mmsp2.btn_state = host_read_btns(); |
519 | d = ~mmsp2.btn_state & 0xff; |
520 | d |= 0x01aa; |
521 | break; |
c1ffd5ba |
522 | case 0x1836: // reserved |
523 | d = 0x2330; |
524 | break; |
525 | case 0x2816: // DPC_X_MAX |
526 | d = 319; |
527 | break; |
528 | case 0x2818: // DPC_Y_MAX |
529 | d = 239; |
530 | break; |
6720e4e4 |
531 | case 0x28da: |
532 | d = mmsp2.mlc_stl_cntl; |
533 | break; |
c1ffd5ba |
534 | case 0x290e: |
535 | case 0x2912: |
536 | d = mmsp2.mlc_stl_adrl; |
537 | break; |
538 | case 0x2910: |
539 | case 0x2914: |
540 | d = mmsp2.mlc_stl_adrh; |
541 | break; |
6720e4e4 |
542 | case 0x2958: |
543 | d = mmsp2.mlc_stl_pallt_a; |
544 | break; |
7000b522 |
545 | |
6720e4e4 |
546 | default: |
7000b522 |
547 | d = xread32_io_cmn(a_, &t); |
548 | if (!t) |
549 | goto unk; |
550 | if (!(a_ & 2)) |
551 | d >>= 16; |
552 | break; |
6720e4e4 |
553 | } |
554 | goto out; |
555 | } |
556 | |
7000b522 |
557 | unk: |
6720e4e4 |
558 | if (a == old_a) { |
559 | d = fudge; |
560 | fudge = ~fudge; |
561 | } |
562 | old_a = a; |
563 | iolog_unh("r16", a, d & 0xffff, 16); |
564 | |
565 | out: |
566 | d &= 0xffff; |
567 | iolog("r16", a, d, 16); |
568 | return d; |
11913091 |
569 | } |
570 | |
571 | static u32 xread32(u32 a) |
572 | { |
3d295a9f |
573 | u32 d = 0; |
dc90c02d |
574 | if ((a & 0xfff00000) == 0x7f000000) { |
575 | u32 a_ = a & 0xffff; |
3d3fa63b |
576 | struct timespec ts; |
577 | u64 t64; |
7000b522 |
578 | u32 t; |
3d3fa63b |
579 | |
dc90c02d |
580 | switch (a_) { |
581 | case 0x0a00: // TCOUNT, 1/7372800s |
d0b9b0df |
582 | g_clock_gettime_raw(CLOCK_REALTIME, &ts); |
3d3fa63b |
583 | t64 = (u64)ts.tv_sec * 1000000000 + ts.tv_nsec; |
584 | // t * 7372800.0 / 1000000000 * 0x100000000 ~= t * 31665935 |
585 | t64 *= 31665935; |
586 | d = t64 >> 32; |
dc90c02d |
587 | break; |
7000b522 |
588 | |
589 | default: |
590 | d = xread32_io_cmn(a_, &t); |
591 | if (!t) |
592 | goto unh; |
593 | break; |
dc90c02d |
594 | } |
7000b522 |
595 | goto out; |
dc90c02d |
596 | } |
3d295a9f |
597 | if ((a & 0xfff00000) == 0x7f100000) { |
598 | u32 *bl = &blitter.dstctrl; |
6720e4e4 |
599 | u32 a_ = a & 0xfff; |
600 | if (a_ < 0x40) { |
601 | d = bl[a_ / 4]; |
602 | if (a_ == 0x34) |
603 | d = 0; // not busy |
604 | goto out; |
605 | } |
3d295a9f |
606 | } |
7000b522 |
607 | |
608 | unh: |
6720e4e4 |
609 | iolog_unh("r32", a, d, 32); |
610 | |
611 | out: |
612 | iolog("r32", a, d, 32); |
3d295a9f |
613 | return d; |
11913091 |
614 | } |
615 | |
616 | static void xwrite8(u32 a, u32 d) |
617 | { |
6720e4e4 |
618 | iolog("w8 ", a, d, 8); |
619 | iolog_unh("w8 ", a, d, 8); |
11913091 |
620 | } |
621 | |
622 | static void xwrite16(u32 a, u32 d) |
623 | { |
6720e4e4 |
624 | iolog("w16", a, d, 16); |
3d295a9f |
625 | if ((a & 0xfff00000) == 0x7f000000) { |
6720e4e4 |
626 | u32 a_ = a & 0xffff; |
627 | switch (a_) { |
7000b522 |
628 | case 0x28da: { |
629 | int mode; |
630 | mmsp2.mlc_stl_cntl = d | 0xaa; |
631 | mode = (d >> 9) & 3; |
632 | mmsp2.v.bpp = mode ? mode * 8 : 4; |
633 | break; |
634 | } |
635 | case 0x290c: |
636 | mmsp2.v.stride = d; |
637 | return; |
638 | case 0x290e: |
639 | case 0x2910: |
640 | // odd addresses don't affect LCD. What about TV? |
641 | return; |
642 | case 0x2912: |
643 | mmsp2.mlc_stl_adrl = d; |
644 | return; |
645 | case 0x2914: |
646 | mmsp2.mlc_stl_adrh = d; |
d0b9b0df |
647 | if (mmsp2.mlc_stl_adr != mmsp2.old_mlc_stl_adr) { |
7000b522 |
648 | // ask for refresh |
d0b9b0df |
649 | fb_sync_thread_futex = 1; |
650 | g_futex_raw(&fb_sync_thread_futex, FUTEX_WAKE, 1, NULL); |
651 | } |
7000b522 |
652 | mmsp2.old_mlc_stl_adr = mmsp2.mlc_stl_adr; |
653 | return; |
f01759de |
654 | case 0x2958: // MLC_STL_PALLT_A |
7000b522 |
655 | mmsp2.mlc_stl_pallt_a = d & 0x1ff; |
656 | return; |
f01759de |
657 | case 0x295a: // MLC_STL_PALLT_D |
7000b522 |
658 | mmsp2.mlc_stl_pallt_d[mmsp2.mlc_stl_pallt_a++] = d; |
659 | mmsp2.mlc_stl_pallt_a &= 0x1ff; |
660 | mmsp2.v.dirty_pal = DIRTY_PAL_MMSP2; |
661 | return; |
3d295a9f |
662 | } |
3d295a9f |
663 | } |
6720e4e4 |
664 | iolog_unh("w16", a, d, 16); |
11913091 |
665 | } |
666 | |
667 | static void xwrite32(u32 a, u32 d) |
668 | { |
6720e4e4 |
669 | iolog("w32", a, d, 32); |
670 | |
7000b522 |
671 | if ((a & 0xfff00000) == 0x7f000000) { |
672 | u32 a_ = a & 0xffff; |
673 | switch (a_) { |
f01759de |
674 | // GP2X |
675 | case 0x295a: // MLC_STL_PALLT_D |
676 | // special unaligned 32bit write, allegro seems to rely on it |
677 | mmsp2.mlc_stl_pallt_d[mmsp2.mlc_stl_pallt_a++ & 0x1ff] = d; |
678 | mmsp2.mlc_stl_pallt_d[mmsp2.mlc_stl_pallt_a++ & 0x1ff] = d >> 16; |
679 | mmsp2.mlc_stl_pallt_a &= 0x1ff; |
680 | mmsp2.v.dirty_pal = DIRTY_PAL_MMSP2; |
681 | return; |
7000b522 |
682 | // Wiz |
683 | case 0x4024: // MLCCONTROL0 |
684 | case 0x4058: // MLCCONTROL1 |
685 | pollux.mlccontrol = d; |
686 | if (!(d & 0x20)) |
687 | return; // layer not enabled |
688 | if ((d >> 16) == 0x443A) |
689 | pollux.v.bpp = 8; |
690 | else |
691 | pollux.v.bpp = 16; |
692 | return; |
693 | case 0x402c: // MLCVSTRIDE0 |
694 | case 0x4060: // MLCVSTRIDE1 |
695 | pollux.v.stride = d; |
696 | return; |
697 | case 0x4038: // MLCADDRESS0 |
698 | case 0x406c: // MLCADDRESS1 |
699 | pollux.mlc_stl_adr = d; |
d0b9b0df |
700 | if (d != mmsp2.old_mlc_stl_adr) { |
7000b522 |
701 | // ask for refresh |
d0b9b0df |
702 | fb_sync_thread_futex = 1; |
703 | g_futex_raw(&fb_sync_thread_futex, FUTEX_WAKE, 1, NULL); |
704 | } |
7000b522 |
705 | mmsp2.old_mlc_stl_adr = d; |
706 | return; |
707 | case 0x403c: // MLCPALETTE0 |
708 | case 0x4070: // MLCPALETTE1 |
709 | pollux.mlcpalette[d >> 24] = d; |
710 | pollux.v.dirty_pal = DIRTY_PAL_POLLUX; |
711 | return; |
712 | } |
713 | } |
3d295a9f |
714 | if ((a & 0xfff00000) == 0x7f100000) { |
715 | u32 *bl = &blitter.dstctrl; |
6720e4e4 |
716 | u32 a_ = a & 0xfff; |
717 | if (a_ < 0x40) { |
718 | bl[a_ / 4] = d; |
719 | if (a_ == 0x34 && (d & 1)) |
720 | blitter_do(); |
721 | return; |
722 | } |
3d295a9f |
723 | } |
6720e4e4 |
724 | iolog_unh("w32", a, d, 32); |
11913091 |
725 | } |
726 | |
6720e4e4 |
727 | #define LINKPAGE_SIZE 0x1000 |
728 | #define LINKPAGE_COUNT 4 |
729 | #define LINKPAGE_ALLOC (LINKPAGE_SIZE * LINKPAGE_COUNT) |
730 | |
731 | struct op_context { |
732 | u32 pc; |
733 | u32 op; |
734 | u32 code[0]; |
735 | }; |
736 | |
3d3fa63b |
737 | struct op_linkpage { |
890c1dc5 |
738 | u32 *code_ptr; |
6720e4e4 |
739 | void (*handler)(struct op_context *op_ctx); |
740 | u32 code[0]; |
741 | }; |
742 | |
3d3fa63b |
743 | struct op_stackframe { |
744 | u32 saved_regs[15]; |
745 | u32 cpsr; |
746 | }; |
747 | |
890c1dc5 |
748 | static struct op_linkpage *g_linkpages[2]; |
6720e4e4 |
749 | static int g_linkpage_count; |
750 | |
10c900a1 |
751 | enum opcond { |
752 | C_EQ, C_NE, C_CS, C_CC, C_MI, C_PL, C_VS, C_VC, |
753 | C_HI, C_LS, C_GE, C_LT, C_GT, C_LE, C_AL, |
754 | }; |
755 | enum cpsr_cond { |
756 | CPSR_N = (1u << 31), |
757 | CPSR_Z = (1u << 30), |
758 | CPSR_C = (1u << 29), |
759 | CPSR_V = (1u << 28), |
760 | }; |
761 | |
11913091 |
762 | #define BIT_SET(v, b) (v & (1 << (b))) |
763 | |
3d3fa63b |
764 | void emu_handle_op(struct op_context *op_ctx, struct op_stackframe *sframe) |
11913091 |
765 | { |
3d3fa63b |
766 | u32 *regs = sframe->saved_regs; |
10c900a1 |
767 | u32 cpsr = sframe->cpsr; |
6720e4e4 |
768 | u32 op = op_ctx->op; |
11913091 |
769 | u32 t, shift, ret, addr; |
10c900a1 |
770 | int i, rn, rd, cond; |
11913091 |
771 | |
fea1465c |
772 | cond = (op & 0xf0000000) >> 28; |
11913091 |
773 | rd = (op & 0x0000f000) >> 12; |
774 | rn = (op & 0x000f0000) >> 16; |
775 | |
10c900a1 |
776 | if (cond != 0x0e) { |
777 | switch (cond) { |
778 | case C_EQ: if ( (cpsr & CPSR_Z)) break; return; |
779 | case C_NE: if (!(cpsr & CPSR_Z)) break; return; |
780 | case C_CS: if ( (cpsr & CPSR_C)) break; return; |
781 | case C_CC: if (!(cpsr & CPSR_C)) break; return; |
782 | case C_MI: if ( (cpsr & CPSR_N)) break; return; |
783 | case C_PL: if (!(cpsr & CPSR_N)) break; return; |
784 | case C_VS: if ( (cpsr & CPSR_V)) break; return; |
785 | case C_VC: if (!(cpsr & CPSR_V)) break; return; |
786 | default: |
787 | goto unhandled; |
788 | } |
789 | } |
fea1465c |
790 | |
11913091 |
791 | if ((op & 0x0f200090) == 0x01000090) { // AM3: LDRH, STRH |
86418a84 |
792 | if (!BIT_SET(op, 5)) // !H |
793 | goto unhandled; |
794 | if (BIT_SET(op, 6) && !BIT_SET(op, 20)) // S && !L |
11913091 |
795 | goto unhandled; |
796 | |
797 | if (BIT_SET(op, 22)) // imm offset |
798 | t = ((op & 0xf00) >> 4) | (op & 0x0f); |
799 | else // reg offset |
800 | t = regs[op & 0x000f]; |
801 | |
802 | if (!BIT_SET(op, 23)) |
803 | t = -t; |
804 | addr = regs[rn] + t; |
805 | |
806 | if (BIT_SET(op, 20)) { // Load |
807 | ret = xread16(addr); |
86418a84 |
808 | if (BIT_SET(op, 6)) { // S |
809 | ret <<= 16; |
810 | ret = (signed int)ret >> 16; |
811 | } |
11913091 |
812 | regs[rd] = ret; |
813 | } |
814 | else |
815 | xwrite16(addr, regs[rd]); |
816 | } |
fea1465c |
817 | else if ((op & 0x0c000000) == 0x04000000) { // load/store word/byte |
818 | if (BIT_SET(op, 21)) |
819 | goto unhandled; // unprivileged |
11913091 |
820 | if (BIT_SET(op, 25)) { // reg offs |
821 | if (BIT_SET(op, 4)) |
fea1465c |
822 | goto unhandled; // nah it's media |
11913091 |
823 | |
824 | t = regs[op & 0x000f]; |
825 | shift = (op & 0x0f80) >> 7; |
826 | switch ((op & 0x0060) >> 5) { |
827 | case 0: t = t << shift; break; |
828 | case 1: t = t >> (shift + 1); break; |
829 | case 2: t = (signed int)t >> (shift + 1); break; |
830 | case 3: goto unhandled; // I'm just lazy |
831 | } |
832 | } |
833 | else // imm offs |
834 | t = op & 0x0fff; |
835 | |
836 | if (!BIT_SET(op, 23)) |
837 | t = -t; |
fea1465c |
838 | |
839 | addr = regs[rn]; |
840 | if (BIT_SET(op, 24)) // pre-indexed |
841 | addr += t; |
842 | if (!BIT_SET(op, 24) || BIT_SET(op, 21)) |
843 | regs[rn] += t; // writeback |
11913091 |
844 | |
845 | if (BIT_SET(op, 20)) { // Load |
846 | if (BIT_SET(op, 22)) // Byte |
847 | ret = xread8(addr); |
848 | else |
849 | ret = xread32(addr); |
850 | regs[rd] = ret; |
851 | } |
852 | else { |
853 | if (BIT_SET(op, 22)) // Byte |
854 | xwrite8(addr, regs[rd]); |
855 | else |
856 | xwrite32(addr, regs[rd]); |
857 | } |
858 | } |
859 | else |
860 | goto unhandled; |
861 | |
86418a84 |
862 | #if 0 |
11913091 |
863 | if (addr != addr_check) { |
864 | fprintf(stderr, "bad calculated addr: %08x vs %08x\n", addr, addr_check); |
865 | abort(); |
866 | } |
86418a84 |
867 | #endif |
11913091 |
868 | return; |
869 | |
870 | unhandled: |
6720e4e4 |
871 | err("unhandled IO op %08x @ %08x\n", op, op_ctx->pc); |
10c900a1 |
872 | for (i = 0; i < 8-1; i++) |
873 | err(" r%d=%08x r%-2d=%08x\n", i, regs[i], i+8, regs[i+8]); |
874 | err(" r%d=%08x cpsr=%08x\n", i, regs[i], cpsr); |
fea1465c |
875 | abort(); |
86418a84 |
876 | } |
877 | |
878 | static u32 make_offset12(u32 *pc, u32 *target) |
879 | { |
880 | int lp_offs, u = 1; |
881 | |
882 | lp_offs = (char *)target - (char *)pc - 2*4; |
883 | if (lp_offs < 0) { |
884 | lp_offs = -lp_offs; |
885 | u = 0; |
886 | } |
887 | if (lp_offs >= LINKPAGE_SIZE) { |
6720e4e4 |
888 | err("linkpage too far: %d\n", lp_offs); |
86418a84 |
889 | abort(); |
890 | } |
891 | |
892 | return (u << 23) | lp_offs; |
893 | } |
894 | |
6720e4e4 |
895 | static u32 make_jmp(u32 *pc, u32 *target, int bl) |
86418a84 |
896 | { |
897 | int jmp_val; |
898 | |
899 | jmp_val = target - pc - 2; |
890c1dc5 |
900 | if (jmp_val < (int)0xff800000 || jmp_val > 0x007fffff) { |
6720e4e4 |
901 | err("jump out of range (%p -> %p)\n", pc, target); |
86418a84 |
902 | abort(); |
903 | } |
904 | |
6720e4e4 |
905 | return 0xea000000 | (bl << 24) | (jmp_val & 0x00ffffff); |
86418a84 |
906 | } |
907 | |
890c1dc5 |
908 | static void emit_op(struct op_linkpage *linkpage, u32 op) |
86418a84 |
909 | { |
890c1dc5 |
910 | *linkpage->code_ptr++ = op; |
86418a84 |
911 | } |
912 | |
890c1dc5 |
913 | static void emit_op_io(struct op_linkpage *linkpage, |
914 | u32 op, u32 *target) |
86418a84 |
915 | { |
890c1dc5 |
916 | op |= make_offset12(linkpage->code_ptr, target); |
917 | emit_op(linkpage, op); |
86418a84 |
918 | } |
919 | |
890c1dc5 |
920 | static void init_linkpage(struct op_linkpage *linkpage) |
6720e4e4 |
921 | { |
890c1dc5 |
922 | linkpage->handler = emu_call_handle_op; |
923 | linkpage->code_ptr = linkpage->code; |
6720e4e4 |
924 | } |
925 | |
86418a84 |
926 | static void segv_sigaction(int num, siginfo_t *info, void *ctx) |
927 | { |
6c888740 |
928 | extern char _init, _end; |
86418a84 |
929 | struct ucontext *context = ctx; |
930 | u32 *regs = (u32 *)&context->uc_mcontext.arm_r0; |
931 | u32 *pc = (u32 *)regs[15]; |
6c888740 |
932 | u32 self_start, self_end; |
890c1dc5 |
933 | struct op_linkpage *lp = NULL; |
6720e4e4 |
934 | struct op_context *op_ctx; |
890c1dc5 |
935 | int i, ret, lp_i, lp_size; |
86418a84 |
936 | |
6c888740 |
937 | self_start = (u32)&_init & ~0xfff; |
938 | self_end = (u32)&_end; |
939 | |
890c1dc5 |
940 | if ((self_start <= regs[15] && regs[15] <= self_end) || // PC is in our segment or |
941 | !((regs[15] ^ (u32)g_linkpages[0]) & ~(LINKPAGE_ALLOC - 1)) || // .. in linkpage |
942 | ((long)info->si_addr & 0xffe00000) != 0x7f000000) // faulting not where expected |
86418a84 |
943 | { |
944 | // real crash - time to die |
6720e4e4 |
945 | err("segv %d %p @ %08x\n", info->si_code, info->si_addr, regs[15]); |
7fd42181 |
946 | for (i = 0; i < 8; i++) |
10c900a1 |
947 | dbg(" r%d=%08x r%-2d=%08x\n", i, regs[i], i+8, regs[i+8]); |
86418a84 |
948 | signal(num, SIG_DFL); |
949 | raise(num); |
c1ffd5ba |
950 | return; |
86418a84 |
951 | } |
0881206b |
952 | segvlog("segv %d %p @ %08x\n", info->si_code, info->si_addr, regs[15]); |
86418a84 |
953 | |
890c1dc5 |
954 | // find nearby linkpage |
955 | for (lp_i = 0; lp_i < ARRAY_SIZE(g_linkpages); lp_i++) { |
956 | if (g_linkpages[lp_i] == NULL) |
957 | continue; |
958 | i = g_linkpages[lp_i]->code_ptr + 2 - pc - 2; |
959 | if ((int)0xff800000 <= i && i <= 0x007fffff) { |
960 | lp = g_linkpages[lp_i]; |
961 | break; |
962 | } |
963 | } |
964 | |
965 | if (lp == NULL) { |
966 | err("fatal: no nearby linkpage for %08x\n", regs[15]); |
967 | abort(); |
968 | } |
969 | |
970 | if (emu_is_dl) { |
971 | ret = mprotect((void *)((long)pc & ~0xfff), 0x1000, PROT_READ|PROT_WRITE|PROT_EXEC); |
972 | if (ret != 0) |
973 | perror("warning: mprotect"); |
974 | } |
975 | |
86418a84 |
976 | // spit PC and op |
890c1dc5 |
977 | op_ctx = (void *)lp->code_ptr; |
6720e4e4 |
978 | op_ctx->pc = (u32)pc; |
979 | op_ctx->op = *pc; |
890c1dc5 |
980 | lp->code_ptr = &op_ctx->code[0]; |
86418a84 |
981 | |
982 | // emit jump to code ptr |
890c1dc5 |
983 | *pc = make_jmp(pc, lp->code_ptr, 0); |
86418a84 |
984 | |
985 | // generate code: |
890c1dc5 |
986 | emit_op (lp, 0xe50d0000 + 0xf00 - 4 * 0); // str r0, [sp, #(-0xf00 + r0_offs)] |
987 | emit_op (lp, 0xe50de000 + 0xf00 - 4 * 14); // str lr, [sp, #(-0xf00 + lr_offs)] |
988 | emit_op (lp, 0xe24f0000 + (lp->code_ptr - (u32 *)op_ctx + 2) * 4); // sub r0, pc, #op_ctx |
989 | emit_op (lp, 0xe1a0e00f); // mov lr, pc |
990 | emit_op_io(lp, 0xe51ff000, (u32 *)&lp->handler); // ldr pc, =handle_op |
991 | emit_op (lp, 0xe51de000 + 0xf00 - 4 * 14); // ldr lr, [sp, #(-0xf00 + lr_offs)] |
992 | emit_op (lp, make_jmp(lp->code_ptr, pc + 1, 0)); // jmp <back> |
86418a84 |
993 | |
994 | // sync caches |
995 | sys_cacheflush(pc, pc + 1); |
890c1dc5 |
996 | sys_cacheflush(lp, lp->code_ptr); |
86418a84 |
997 | |
890c1dc5 |
998 | lp_size = (char *)lp->code_ptr - (char *)lp; |
0881206b |
999 | segvlog("code #%d %d/%d\n", g_linkpage_count, lp_size, LINKPAGE_SIZE); |
86418a84 |
1000 | |
890c1dc5 |
1001 | if (lp_size + 14*4 > LINKPAGE_SIZE) { |
86418a84 |
1002 | g_linkpage_count++; |
1003 | if (g_linkpage_count >= LINKPAGE_COUNT) { |
6720e4e4 |
1004 | err("too many linkpages needed\n"); |
86418a84 |
1005 | abort(); |
1006 | } |
890c1dc5 |
1007 | g_linkpages[lp_i] = (void *)((char *)g_linkpages[lp_i] + LINKPAGE_SIZE); |
1008 | init_linkpage(g_linkpages[lp_i]); |
86418a84 |
1009 | } |
1010 | //handle_op(regs[15], op, regs, (u32)info->si_addr); |
1011 | //regs[15] += 4; |
1012 | } |
11913091 |
1013 | |
890c1dc5 |
1014 | void emu_init(void *map_bottom[2], int is_dl) |
11913091 |
1015 | { |
7fd42181 |
1016 | sigaction_t segv_action = { |
11913091 |
1017 | .sa_sigaction = segv_sigaction, |
1018 | .sa_flags = SA_SIGINFO, |
1019 | }; |
6720e4e4 |
1020 | void *pret; |
890c1dc5 |
1021 | int i, ret; |
11913091 |
1022 | |
830ba1bf |
1023 | #ifdef PND |
1024 | if (geteuid() == 0) { |
b4f4cb40 |
1025 | err("don't try to run as root, device registers or memory " |
1026 | "might get trashed crashing the OS or even damaging the device.\n"); |
830ba1bf |
1027 | exit(1); |
1028 | } |
1029 | #endif |
1030 | |
890c1dc5 |
1031 | emu_is_dl = is_dl; |
1032 | |
1033 | for (i = 0; i < 2; i++) { |
1034 | if (map_bottom[i] == NULL) |
1035 | continue; |
1036 | g_linkpages[i] = (void *)(((u32)map_bottom[i] - LINKPAGE_ALLOC) & ~0xfff); |
1037 | pret = mmap(g_linkpages[i], LINKPAGE_ALLOC, PROT_READ|PROT_WRITE, |
1038 | MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED, -1, 0); |
1039 | if (pret != g_linkpages[i]) { |
1040 | err("linkpage alloc @ %p: ", g_linkpages[i]); |
1041 | perror(NULL); |
1042 | exit(1); |
1043 | } |
1044 | log("linkpages @ %p\n", g_linkpages[i]); |
1045 | init_linkpage(g_linkpages[i]); |
11913091 |
1046 | } |
11913091 |
1047 | |
4d045184 |
1048 | // host stuff |
1049 | ret = host_init(); |
1050 | if (ret != 0) { |
1051 | err("can't init host\n"); |
3d3fa63b |
1052 | exit(1); |
1053 | } |
1054 | |
4d045184 |
1055 | ret = host_video_init(NULL, 0); |
2ce69bdf |
1056 | if (ret != 0) { |
4d045184 |
1057 | err("can't init host video\n"); |
1058 | exit(1); |
1059 | } |
1060 | |
5853ddbd |
1061 | // TODO: check if this really fails on Wiz.. |
4d045184 |
1062 | mmsp2.umem = mmap(NULL, 0x2000000, PROT_READ|PROT_WRITE|PROT_EXEC, |
1063 | MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); |
5853ddbd |
1064 | #ifdef WIZ |
1065 | if (mmsp2.umem == MAP_FAILED) { |
1066 | // we are short on memmory on Wiz, need special handling |
1067 | extern void *host_mmap_upper(void); |
1068 | mmsp2.umem = host_mmap_upper(); |
1069 | } |
4d045184 |
1070 | #endif |
1071 | if (mmsp2.umem == MAP_FAILED) { |
1072 | perror(PFX "mmap upper mem"); |
3d295a9f |
1073 | exit(1); |
1074 | } |
c1ffd5ba |
1075 | |
d0b9b0df |
1076 | pret = mmap(NULL, THREAD_STACK_SIZE, PROT_READ|PROT_WRITE|PROT_EXEC, |
1077 | MAP_PRIVATE|MAP_ANONYMOUS|MAP_GROWSDOWN, -1, 0); |
1078 | if (mmsp2.umem == MAP_FAILED) { |
1079 | perror(PFX "mmap thread stack"); |
1080 | exit(1); |
1081 | } |
1082 | fb_sync_thread_futex = 1; |
1083 | ret = g_clone(CLONE_VM | CLONE_FS | CLONE_FILES |
1084 | | CLONE_SIGHAND | CLONE_THREAD, |
1085 | (char *)pret + THREAD_STACK_SIZE, 0, 0, 0, |
1086 | fb_sync_thread); |
1087 | if (ret == 0 || ret == -1) { |
1088 | perror(PFX "start fb thread"); |
c1ffd5ba |
1089 | exit(1); |
1090 | } |
d0b9b0df |
1091 | g_futex_raw(&fb_sync_thread_futex, FUTEX_WAIT, 1, NULL); |
c1ffd5ba |
1092 | |
7000b522 |
1093 | // defaults |
c1ffd5ba |
1094 | mmsp2.mlc_stl_adr = 0x03101000; // fb2 is at 0x03381000 |
7fd42181 |
1095 | mmsp2.mlc_stl_cntl = 0x4ab; // 16bpp, region 1 active |
7000b522 |
1096 | mmsp2.v.width = 320; |
1097 | mmsp2.v.height = 240; |
1098 | mmsp2.v.stride = 320*2; |
1099 | mmsp2.v.bpp = 16; |
1100 | mmsp2.v.dirty_pal = 1; |
c1ffd5ba |
1101 | |
1102 | sigemptyset(&segv_action.sa_mask); |
1103 | sigaction(SIGSEGV, &segv_action, NULL); |
3d295a9f |
1104 | } |
1105 | |
b4f4cb40 |
1106 | static long emu_mmap_dev(unsigned int length, int prot, int flags, unsigned int offset) |
11913091 |
1107 | { |
3d3fa63b |
1108 | u8 *umem, *umem_end; |
11913091 |
1109 | |
3d295a9f |
1110 | // SoC regs |
7000b522 |
1111 | if ((offset & ~0x1ffff) == 0xc0000000) { |
b4f4cb40 |
1112 | return g_mmap2_raw((void *)0x7f000000, length, PROT_NONE, |
11913091 |
1113 | MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED|MAP_NORESERVE, -1, 0); |
1114 | } |
7000b522 |
1115 | // MMSP2 blitter |
11913091 |
1116 | if ((offset & ~0xffff) == 0xe0020000) { |
b4f4cb40 |
1117 | return g_mmap2_raw((void *)0x7f100000, length, PROT_NONE, |
11913091 |
1118 | MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED|MAP_NORESERVE, -1, 0); |
1119 | } |
3d295a9f |
1120 | // upper mem |
3d3fa63b |
1121 | if ((offset & 0xfe000000) != 0x02000000) { |
6720e4e4 |
1122 | err("unexpected devmem mmap @ %08x\n", offset); |
b4f4cb40 |
1123 | return -EINVAL; |
3d295a9f |
1124 | } |
1125 | |
3d3fa63b |
1126 | umem = uppermem_lookup(offset, &umem_end); |
1127 | if (umem + length > umem_end) |
1128 | err("warning: uppermem @ %08x overflows by %d bytes\n", |
1129 | offset, umem + length - umem_end); |
1130 | |
3ef07128 |
1131 | dbg("upper mem @ %08x %x = %p\n", offset, length, umem); |
b4f4cb40 |
1132 | return (long)umem; |
11913091 |
1133 | } |
1134 | |
b4f4cb40 |
1135 | long emu_do_mmap(unsigned int length, int prot, int flags, int fd, |
1136 | unsigned int offset) |
dc90c02d |
1137 | { |
1138 | if (fd == FAKEDEV_MEM) |
1139 | return emu_mmap_dev(length, prot, flags, offset); |
1140 | |
1141 | if (fd == FAKEDEV_FB0) |
1142 | return emu_mmap_dev(length, prot, flags, offset + 0x03101000); |
1143 | |
1144 | if (fd == FAKEDEV_FB1) |
1145 | return emu_mmap_dev(length, prot, flags, offset + 0x03381000); |
1146 | |
7fd42181 |
1147 | err("bad/ni mmap(?, %d, %x, %x, %d, %08x)\n", length, prot, flags, fd, offset); |
b4f4cb40 |
1148 | return -EINVAL; |
dc90c02d |
1149 | } |
1150 | |
b4f4cb40 |
1151 | long emu_do_munmap(void *addr, unsigned int length) |
3ef07128 |
1152 | { |
1153 | u8 *p = addr; |
1154 | |
1155 | // don't allow to unmap upper mem |
1156 | if ((u8 *)mmsp2.umem <= p && p < (u8 *)mmsp2.umem + 0x2000000) { |
1157 | dbg("ignoring munmap: %p %x\n", addr, length); |
1158 | return 0; |
1159 | } |
1160 | |
1161 | return -EAGAIN; |
1162 | } |
1163 | |
7000b522 |
1164 | static void emu_sound_open(int fd) |
1165 | { |
1166 | #ifdef PND |
1167 | int ret, frag; |
1168 | |
1169 | // set default buffer size to 16 * 1K |
1170 | frag = (16<<16) | 10; // 16K |
b4f4cb40 |
1171 | ret = g_ioctl_raw(fd, SNDCTL_DSP_SETFRAGMENT, &frag); |
1172 | if (ret != 0) |
1173 | err("snd ioctl SETFRAGMENT %08x: %d\n", frag, ret); |
7000b522 |
1174 | #endif |
1175 | } |
1176 | |
b4f4cb40 |
1177 | static long emu_sound_ioctl(int fd, int request, void *argp) |
dc90c02d |
1178 | { |
1179 | int *arg = argp; |
1180 | |
1181 | #if 0 |
1182 | dbg("snd ioctl(%d, %08x, %p)", fd, request, argp); |
1183 | if (arg != NULL) |
1184 | dbg_c(" [%d]", *arg); |
1185 | dbg_c("\n"); |
1186 | #endif |
1187 | |
1188 | /* People set strange frag settings on GP2X, which even manage |
1189 | * to break audio on pandora (causes writes to fail). |
1190 | * Catch this and set to something that works. */ |
7000b522 |
1191 | switch(request) { |
1192 | case SNDCTL_DSP_SETFRAGMENT: { |
b4f4cb40 |
1193 | int bsize, frag, frag_cnt; |
1194 | long ret; |
1195 | |
7000b522 |
1196 | if (arg == NULL) |
1197 | break; |
dc90c02d |
1198 | |
7000b522 |
1199 | frag = *arg & 0xffff; |
1200 | frag_cnt = *arg >> 16; |
1201 | bsize = frag_cnt << frag; |
1202 | if (frag < 10 || bsize < 4096*4 || bsize > 4096*4*2) { |
1203 | /* |
1204 | * ~4ms. gpSP wants small buffers or else it stutters |
1205 | * because of it's audio thread sync stuff |
1206 | * XXX: hardcoding, as low samplerates will result in small fragment size, |
1207 | * which itself causes ALSA stall and hangs the program. |
1208 | * Also some apps change samplerate without reopening /dev/dsp, |
1209 | * which causes ALSA to reject SNDCTL_DSP_SETFRAGMENT. |
1210 | */ |
1211 | bsize = 44100 / 250 * 4; |
1212 | |
1213 | for (frag = 0; bsize; bsize >>= 1, frag++) |
1214 | ; |
1215 | |
1216 | frag_cnt = 16; |
1217 | } |
dc90c02d |
1218 | |
7000b522 |
1219 | frag |= frag_cnt << 16; |
b4f4cb40 |
1220 | ret = g_ioctl_raw(fd, SNDCTL_DSP_SETFRAGMENT, &frag); |
1221 | if (ret != 0) |
1222 | err("snd ioctl SETFRAGMENT %08x: %ld\n", frag, ret); |
7000b522 |
1223 | // indicate success even if we fail (because of ALSA mostly), |
1224 | // things like MikMod will bail out otherwise. |
1225 | return 0; |
dc90c02d |
1226 | } |
7000b522 |
1227 | case SNDCTL_DSP_SYNC: |
1228 | // Franxis tends to use sync/write loops, bad idea under ALSA |
1229 | return 0; |
1230 | default: |
1231 | break; |
dc90c02d |
1232 | } |
dc90c02d |
1233 | |
b4f4cb40 |
1234 | return g_ioctl_raw(fd, request, argp); |
dc90c02d |
1235 | } |
1236 | |
b4f4cb40 |
1237 | long emu_do_ioctl(int fd, int request, void *argp) |
dc90c02d |
1238 | { |
1239 | if (fd == emu_interesting_fds[IFD_SOUND].fd) |
1240 | return emu_sound_ioctl(fd, request, argp); |
1241 | |
7fd42181 |
1242 | switch (fd) { |
1243 | /* *********************** */ |
1244 | case FAKEDEV_FB0: |
1245 | case FAKEDEV_FB1: |
1246 | if (argp == NULL) |
1247 | goto fail; |
dc90c02d |
1248 | |
dc90c02d |
1249 | switch (request) { |
1250 | case FBIOGET_FSCREENINFO: { |
1251 | struct fb_fix_screeninfo *fix = argp; |
1252 | |
1253 | memset(fix, 0, sizeof(*fix)); |
1254 | strcpy(fix->id, "mmsp2_RGB0"); |
1255 | fix->type = FB_TYPE_PACKED_PIXELS; |
1256 | fix->accel = FB_ACCEL_NONE; |
7fd42181 |
1257 | fix->visual = FB_VISUAL_TRUECOLOR; |
1258 | fix->line_length = 320*2; |
dc90c02d |
1259 | fix->smem_start = (fd == FAKEDEV_FB0) ? 0x03101000 : 0x03381000; |
1260 | fix->smem_len = 320*240*2; |
1261 | return 0; |
1262 | } |
1263 | case FBIOGET_VSCREENINFO: { |
1264 | struct fb_var_screeninfo *var = argp; |
7fd42181 |
1265 | static const struct fb_bitfield fbb_red = { offset: 11, length: 5, }; |
1266 | static const struct fb_bitfield fbb_green = { offset: 5, length: 6, }; |
1267 | static const struct fb_bitfield fbb_blue = { offset: 0, length: 5, }; |
dc90c02d |
1268 | |
1269 | memset(var, 0, sizeof(*var)); |
1270 | var->activate = FB_ACTIVATE_NOW; |
1271 | var->xres = |
1272 | var->xres_virtual = 320; |
1273 | var->yres = |
1274 | var->yres_virtual = 240; |
1275 | var->width = |
1276 | var->height = -1; |
1277 | var->vmode = FB_VMODE_NONINTERLACED; |
1278 | var->bits_per_pixel = 16; |
1279 | var->red = fbb_red; |
1280 | var->green = fbb_green; |
1281 | var->blue = fbb_blue; |
1282 | return 0; |
1283 | } |
7fd42181 |
1284 | case FBIOPUT_VSCREENINFO: { |
1285 | struct fb_var_screeninfo *var = argp; |
1286 | dbg(" put vscreen: %dx%d@%d\n", var->xres, var->yres, var->bits_per_pixel); |
1287 | if (var->xres != 320 || var->yres != 240 || var->bits_per_pixel != 16) |
1288 | return -1; |
1289 | return 0; |
1290 | } |
dc90c02d |
1291 | } |
7fd42181 |
1292 | |
1293 | /* *********************** */ |
1294 | case FAKEDEV_TTY0: |
1295 | // fake tty0 to make GPH SDL happy |
1296 | if (request == 0x4b46) // KDGKBENT |
1297 | return -1; |
1298 | return 0; |
dc90c02d |
1299 | } |
1300 | |
1301 | fail: |
7fd42181 |
1302 | err("bad/ni ioctl(%d, %08x, %p)\n", fd, request, argp); |
b4f4cb40 |
1303 | return -EINVAL; |
dc90c02d |
1304 | } |
1305 | |
8cbb0278 |
1306 | static const char wm97xx_p[] = |
1307 | "5507 0 -831476 0 -4218 16450692 65536"; // from 4.0 fw |
1308 | |
88d814e3 |
1309 | long emu_do_read(int fd, void *buf, int count) |
1310 | { |
88d814e3 |
1311 | int ret, pressed = 0, x, y; |
1312 | struct { |
1313 | u16 pressure, x, y; |
1314 | } wm97xx; |
1315 | |
1316 | if (count < 0) { |
1317 | err("read(%d, %d)\n", fd, count); |
1318 | return -EINVAL; |
1319 | } |
1320 | |
1321 | switch (fd) { |
1322 | case FAKEDEV_GPIO: |
1323 | mmsp2.btn_state = host_read_btns(); |
1324 | |
1325 | if (count > 4) |
1326 | count = 4; |
1327 | memcpy(buf, &mmsp2.btn_state, count); |
1328 | break; |
1329 | case FAKEDEV_WM97XX: |
1330 | ret = host_read_ts(&pressed, &x, &y); |
1331 | if (ret == 0 && pressed) { |
8cbb0278 |
1332 | wm97xx.pressure = 0x8001; // TODO: check the real thing |
88d814e3 |
1333 | wm97xx.x = x * 3750 / 1024 + 200; |
1334 | wm97xx.y = 3750 - y * 3750 / 1024 + 200; |
1335 | } |
1336 | else { |
1337 | wm97xx.pressure = 0; |
1338 | wm97xx.x = wm97xx.y = 200; |
1339 | } |
1340 | |
1341 | if (count > sizeof(wm97xx)) |
1342 | count = sizeof(wm97xx); |
1343 | memcpy(buf, &wm97xx, count); |
1344 | break; |
1345 | case FAKEDEV_WM97XX_P: |
1346 | if (count < sizeof(wm97xx_p)) |
1347 | err("incomplete pointercal read\n"); |
1348 | strncpy(buf, wm97xx_p, count); |
1349 | break; |
1350 | default: |
8cbb0278 |
1351 | dbg("read(%d, %d)\n", fd, count); |
88d814e3 |
1352 | return -EINVAL; |
1353 | } |
1354 | return count; |
1355 | } |
1356 | |
7000b522 |
1357 | struct dev_fd_t emu_interesting_fds[] = { |
1358 | [IFD_SOUND] = { "/dev/dsp", -1, emu_sound_open }, |
1359 | { NULL, 0, NULL }, |
1360 | }; |
1361 | |
7fd42181 |
1362 | static const struct { |
1363 | const char *from; |
1364 | const char *to; |
1365 | } path_map[] = { |
158ddd8d |
1366 | { "/mnt/tmp", "./tmp" }, |
2692251d |
1367 | { "/mnt/sd", "./mntsd" }, |
7fd42181 |
1368 | }; |
1369 | |
2692251d |
1370 | const char *emu_wrap_path(const char *path) |
7fd42181 |
1371 | { |
158ddd8d |
1372 | char *buff, *p; |
3d3fa63b |
1373 | size_t size; |
7fd42181 |
1374 | int i, len; |
2692251d |
1375 | long ret; |
7fd42181 |
1376 | |
1377 | // do only path mapping for now |
1378 | for (i = 0; i < ARRAY_SIZE(path_map); i++) { |
158ddd8d |
1379 | p = strstr(path, path_map[i].from); |
1380 | if (p != NULL) { |
3d3fa63b |
1381 | size = strlen(path) + strlen(path_map[i].to) + 1; |
1382 | buff = malloc(size); |
1383 | if (buff == NULL) |
1384 | break; |
158ddd8d |
1385 | len = p - path; |
1386 | strncpy(buff, path, len); |
1387 | snprintf(buff + len, size - len, "%s%s", path_map[i].to, |
1388 | path + len + strlen(path_map[i].from)); |
3d3fa63b |
1389 | dbg("mapped path \"%s\" -> \"%s\"\n", path, buff); |
2692251d |
1390 | |
1391 | ret = g_mkdir_raw(path_map[i].to, 0666); |
1392 | if (ret != 0 && ret != -EEXIST) |
1393 | err("mkdir(%s): %ld\n", path_map[i].to, ret); |
1394 | |
3d3fa63b |
1395 | return buff; |
7fd42181 |
1396 | } |
1397 | } |
1398 | |
1399 | return path; |
1400 | } |
1401 | |
2692251d |
1402 | void emu_wrap_path_free(const char *w_path, const char *old_path) |
7000b522 |
1403 | { |
1404 | if (w_path != old_path) |
1405 | free((void *)w_path); |
1406 | } |
1407 | |
7fd42181 |
1408 | void *emu_do_fopen(const char *path, const char *mode) |
1409 | { |
7000b522 |
1410 | const char *w_path; |
3d3fa63b |
1411 | FILE *ret; |
7000b522 |
1412 | |
8cbb0278 |
1413 | if (strcmp(path, "/etc/pointercal") == 0) { |
1414 | // use local pontercal, not host's |
1415 | ret = fopen("pointercal", mode); |
1416 | if (ret == NULL) { |
1417 | ret = fopen("pointercal", "w"); |
1418 | if (ret != NULL) { |
1419 | fwrite(wm97xx_p, 1, sizeof(wm97xx_p), ret); |
1420 | fclose(ret); |
1421 | } |
1422 | ret = fopen("pointercal", mode); |
1423 | } |
1424 | } |
1425 | else { |
1426 | w_path = emu_wrap_path(path); |
1427 | ret = fopen(w_path, mode); |
1428 | emu_wrap_path_free(w_path, path); |
1429 | } |
7000b522 |
1430 | |
3d3fa63b |
1431 | return ret; |
7fd42181 |
1432 | } |
1433 | |
3d3fa63b |
1434 | // FIXME: threads.. |
7fd42181 |
1435 | int emu_do_system(const char *command) |
1436 | { |
1437 | static char tmp_path[512]; |
158ddd8d |
1438 | int need_ginge = 0; |
3d3fa63b |
1439 | const char *p2; |
1440 | char *p; |
db9191ed |
1441 | int ret; |
7fd42181 |
1442 | |
1443 | if (command == NULL) |
1444 | return -1; |
1445 | |
158ddd8d |
1446 | for (p2 = command; *p2 && isspace(*p2); p2++) |
1447 | ; |
7fd42181 |
1448 | |
158ddd8d |
1449 | if (*p2 == '.') // relative path? |
1450 | need_ginge = 1; |
1451 | else if (*p2 == '/' && strncmp(p2, "/bin", 4) && strncmp(p2, "/lib", 4) |
1452 | && strncmp(p2, "/sbin", 4) && strncmp(p2, "/usr", 4)) |
1453 | // absolute path, but not a system command |
1454 | need_ginge = 1; |
7fd42181 |
1455 | |
2692251d |
1456 | p2 = emu_wrap_path(command); |
158ddd8d |
1457 | if (need_ginge) { |
1458 | make_local_path(tmp_path, sizeof(tmp_path), "ginge_prep"); |
1459 | p = tmp_path + strlen(tmp_path); |
1460 | |
1461 | snprintf(p, sizeof(tmp_path) - (p - tmp_path), " --nomenu %s", p2); |
1462 | } |
1463 | else |
1464 | snprintf(tmp_path, sizeof(tmp_path), "%s", p2); |
2692251d |
1465 | emu_wrap_path_free(p2, command); |
3d3fa63b |
1466 | |
7fd42181 |
1467 | dbg("system: \"%s\"\n", tmp_path); |
db9191ed |
1468 | |
1469 | // the app might want the screen too.. |
1470 | fb_thread_pause(); |
1471 | ret = system(tmp_path); |
1472 | fb_thread_resume(); |
1473 | return ret; |
7fd42181 |
1474 | } |
1475 | |
78684356 |
1476 | long emu_do_execve(const char *filename, char * const argv[], |
1477 | char * const envp[]) |
7000b522 |
1478 | { |
1479 | const char **new_argv; |
1480 | char *prep_path; |
78684356 |
1481 | int i, argc; |
1482 | long ret; |
7000b522 |
1483 | |
1484 | if (filename == NULL) |
1485 | return -1; |
1486 | |
78684356 |
1487 | if (strstr(filename, "gp2xmenu") != NULL) |
1488 | host_forced_exit(0); |
7000b522 |
1489 | |
1490 | for (i = 0; argv[i] != NULL; i++) |
1491 | ; |
1492 | argc = i + 1; |
1493 | |
1494 | new_argv = calloc(argc + 2, sizeof(new_argv[0])); |
1495 | if (new_argv == NULL) |
1496 | return -1; |
1497 | |
1498 | prep_path = malloc(512); |
1499 | if (prep_path == NULL) |
1500 | return -1; |
1501 | |
1502 | make_local_path(prep_path, 512, "ginge_prep"); |
1503 | new_argv[0] = prep_path; |
1504 | new_argv[1] = "--nomenu"; |
2692251d |
1505 | new_argv[2] = emu_wrap_path(filename); |
7000b522 |
1506 | |
1507 | if (argv[0] != NULL) |
1508 | for (i = 1; argv[i] != NULL; i++) |
1509 | new_argv[i + 2] = argv[i]; |
1510 | |
1511 | dbg("execve \"%s\" %s \"%s\"\n", new_argv[0], new_argv[1], new_argv[2]); |
1512 | ret = execve(new_argv[0], (char **)new_argv, envp); |
78684356 |
1513 | err("execve(%s): %ld\n", new_argv[0], ret); |
7000b522 |
1514 | return ret; |
1515 | } |
1516 | |
499bf01c |
1517 | // vim:shiftwidth=2:expandtab |