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 | { |
433 | u32 d = 0; |
434 | |
435 | *handled = 1; |
436 | switch (a) { |
437 | // Wiz stuff |
438 | case 0x402c: // MLCVSTRIDE0 |
439 | case 0x4060: // MLCVSTRIDE1 |
440 | d = pollux.v.stride; |
441 | break; |
442 | case 0x4038: // MLCADDRESS0 |
443 | case 0x406c: // MLCADDRESS1 |
444 | d = pollux.mlc_stl_adr; |
445 | break; |
446 | // wiz_lib reads: |
447 | // ???? ???? YXBA DURiLe ???? VdVuMS LR?? ???? |
448 | // | GPIOC[31:16] | GPIOB[31:16] | |
449 | case 0xa058: // GPIOBPAD |
830ba1bf |
450 | d = (pollux.btn_state >> 1) & 0x0100; |
451 | d |= (pollux.btn_state << 1) & 0x0200; |
7000b522 |
452 | d |= (pollux.btn_state >> 3) & 0x0080; |
453 | d |= (pollux.btn_state >> 5) & 0x0040; |
454 | d |= (pollux.btn_state >> 6) & 0x0c00; |
455 | d <<= 16; |
456 | d = ~d; |
457 | break; |
458 | case 0xa098: // GPIOCPAD |
459 | pollux.btn_state = host_read_btns(); |
460 | d = (pollux.btn_state >> 8) & 0x00f0; |
461 | d |= (pollux.btn_state >> 1) & 0x0008; |
462 | d |= (pollux.btn_state << 2) & 0x0004; |
463 | d |= (pollux.btn_state >> 5) & 0x0002; |
464 | d |= (pollux.btn_state >> 2) & 0x0001; |
465 | d <<= 16; |
466 | d = ~d; |
467 | break; |
468 | default: |
469 | *handled = 0; |
470 | break; |
471 | } |
472 | |
473 | return d; |
474 | } |
475 | |
3d295a9f |
476 | static u32 xread8(u32 a) |
477 | { |
6720e4e4 |
478 | iolog("r8 ", a, 0, 8); |
479 | iolog_unh("r8 ", a, 0, 8); |
3d295a9f |
480 | return 0; |
11913091 |
481 | } |
482 | |
483 | static u32 xread16(u32 a) |
484 | { |
6720e4e4 |
485 | static u32 fudge, old_a; |
486 | u32 d = 0, t; |
487 | |
488 | if ((a & 0xffff0000) == 0x7f000000) { |
489 | u32 a_ = a & 0xffff; |
490 | switch (a_) { |
491 | case 0x0910: // FPLL |
492 | case 0x0912: |
493 | d = 0x9407; |
494 | break; |
495 | // minilib reads as: |
7000b522 |
496 | // 0000 P000 VuVd00 0000 YXBA RLSeSt 0Ri0D 0Le0U |
497 | // | GPIOD |GPIOC[8:15]|GPIOM[0:7] | |
6720e4e4 |
498 | // /dev/GPIO: |
499 | // ... 0PVdVu ... |
500 | case 0x1184: // GPIOC |
501 | d = ~mmsp2.btn_state & 0xff00; |
502 | d |= 0x00ff; |
503 | break; |
504 | case 0x1186: // GPIOD |
505 | t = ~mmsp2.btn_state; |
506 | d = (t >> 9) & 0x0080; |
507 | d |= (t >> 11) & 0x0040; |
508 | d |= (t >> 7) & 0x0800; |
509 | d |= 0x373b; |
510 | break; |
511 | case 0x1198: // GPIOM |
512 | mmsp2.btn_state = host_read_btns(); |
513 | d = ~mmsp2.btn_state & 0xff; |
514 | d |= 0x01aa; |
515 | break; |
c1ffd5ba |
516 | case 0x1836: // reserved |
517 | d = 0x2330; |
518 | break; |
519 | case 0x2816: // DPC_X_MAX |
520 | d = 319; |
521 | break; |
522 | case 0x2818: // DPC_Y_MAX |
523 | d = 239; |
524 | break; |
6720e4e4 |
525 | case 0x28da: |
526 | d = mmsp2.mlc_stl_cntl; |
527 | break; |
c1ffd5ba |
528 | case 0x290e: |
529 | case 0x2912: |
530 | d = mmsp2.mlc_stl_adrl; |
531 | break; |
532 | case 0x2910: |
533 | case 0x2914: |
534 | d = mmsp2.mlc_stl_adrh; |
535 | break; |
6720e4e4 |
536 | case 0x2958: |
537 | d = mmsp2.mlc_stl_pallt_a; |
538 | break; |
7000b522 |
539 | |
6720e4e4 |
540 | default: |
7000b522 |
541 | d = xread32_io_cmn(a_, &t); |
542 | if (!t) |
543 | goto unk; |
544 | if (!(a_ & 2)) |
545 | d >>= 16; |
546 | break; |
6720e4e4 |
547 | } |
548 | goto out; |
549 | } |
550 | |
7000b522 |
551 | unk: |
6720e4e4 |
552 | if (a == old_a) { |
553 | d = fudge; |
554 | fudge = ~fudge; |
555 | } |
556 | old_a = a; |
557 | iolog_unh("r16", a, d & 0xffff, 16); |
558 | |
559 | out: |
560 | d &= 0xffff; |
561 | iolog("r16", a, d, 16); |
562 | return d; |
11913091 |
563 | } |
564 | |
565 | static u32 xread32(u32 a) |
566 | { |
3d295a9f |
567 | u32 d = 0; |
dc90c02d |
568 | if ((a & 0xfff00000) == 0x7f000000) { |
569 | u32 a_ = a & 0xffff; |
3d3fa63b |
570 | struct timespec ts; |
571 | u64 t64; |
7000b522 |
572 | u32 t; |
3d3fa63b |
573 | |
dc90c02d |
574 | switch (a_) { |
575 | case 0x0a00: // TCOUNT, 1/7372800s |
d0b9b0df |
576 | g_clock_gettime_raw(CLOCK_REALTIME, &ts); |
3d3fa63b |
577 | t64 = (u64)ts.tv_sec * 1000000000 + ts.tv_nsec; |
578 | // t * 7372800.0 / 1000000000 * 0x100000000 ~= t * 31665935 |
579 | t64 *= 31665935; |
580 | d = t64 >> 32; |
dc90c02d |
581 | break; |
7000b522 |
582 | |
583 | default: |
584 | d = xread32_io_cmn(a_, &t); |
585 | if (!t) |
586 | goto unh; |
587 | break; |
dc90c02d |
588 | } |
7000b522 |
589 | goto out; |
dc90c02d |
590 | } |
3d295a9f |
591 | if ((a & 0xfff00000) == 0x7f100000) { |
592 | u32 *bl = &blitter.dstctrl; |
6720e4e4 |
593 | u32 a_ = a & 0xfff; |
594 | if (a_ < 0x40) { |
595 | d = bl[a_ / 4]; |
596 | if (a_ == 0x34) |
597 | d = 0; // not busy |
598 | goto out; |
599 | } |
3d295a9f |
600 | } |
7000b522 |
601 | |
602 | unh: |
6720e4e4 |
603 | iolog_unh("r32", a, d, 32); |
604 | |
605 | out: |
606 | iolog("r32", a, d, 32); |
3d295a9f |
607 | return d; |
11913091 |
608 | } |
609 | |
610 | static void xwrite8(u32 a, u32 d) |
611 | { |
6720e4e4 |
612 | iolog("w8 ", a, d, 8); |
613 | iolog_unh("w8 ", a, d, 8); |
11913091 |
614 | } |
615 | |
616 | static void xwrite16(u32 a, u32 d) |
617 | { |
6720e4e4 |
618 | iolog("w16", a, d, 16); |
3d295a9f |
619 | if ((a & 0xfff00000) == 0x7f000000) { |
6720e4e4 |
620 | u32 a_ = a & 0xffff; |
621 | switch (a_) { |
7000b522 |
622 | case 0x28da: { |
623 | int mode; |
624 | mmsp2.mlc_stl_cntl = d | 0xaa; |
625 | mode = (d >> 9) & 3; |
626 | mmsp2.v.bpp = mode ? mode * 8 : 4; |
627 | break; |
628 | } |
629 | case 0x290c: |
630 | mmsp2.v.stride = d; |
631 | return; |
632 | case 0x290e: |
633 | case 0x2910: |
634 | // odd addresses don't affect LCD. What about TV? |
635 | return; |
636 | case 0x2912: |
637 | mmsp2.mlc_stl_adrl = d; |
638 | return; |
639 | case 0x2914: |
640 | mmsp2.mlc_stl_adrh = d; |
d0b9b0df |
641 | if (mmsp2.mlc_stl_adr != mmsp2.old_mlc_stl_adr) { |
7000b522 |
642 | // ask for refresh |
d0b9b0df |
643 | fb_sync_thread_futex = 1; |
644 | g_futex_raw(&fb_sync_thread_futex, FUTEX_WAKE, 1, NULL); |
645 | } |
7000b522 |
646 | mmsp2.old_mlc_stl_adr = mmsp2.mlc_stl_adr; |
647 | return; |
f01759de |
648 | case 0x2958: // MLC_STL_PALLT_A |
7000b522 |
649 | mmsp2.mlc_stl_pallt_a = d & 0x1ff; |
650 | return; |
f01759de |
651 | case 0x295a: // MLC_STL_PALLT_D |
7000b522 |
652 | mmsp2.mlc_stl_pallt_d[mmsp2.mlc_stl_pallt_a++] = d; |
653 | mmsp2.mlc_stl_pallt_a &= 0x1ff; |
654 | mmsp2.v.dirty_pal = DIRTY_PAL_MMSP2; |
655 | return; |
3d295a9f |
656 | } |
3d295a9f |
657 | } |
6720e4e4 |
658 | iolog_unh("w16", a, d, 16); |
11913091 |
659 | } |
660 | |
661 | static void xwrite32(u32 a, u32 d) |
662 | { |
6720e4e4 |
663 | iolog("w32", a, d, 32); |
664 | |
7000b522 |
665 | if ((a & 0xfff00000) == 0x7f000000) { |
666 | u32 a_ = a & 0xffff; |
667 | switch (a_) { |
f01759de |
668 | // GP2X |
669 | case 0x295a: // MLC_STL_PALLT_D |
670 | // special unaligned 32bit write, allegro seems to rely on it |
671 | mmsp2.mlc_stl_pallt_d[mmsp2.mlc_stl_pallt_a++ & 0x1ff] = d; |
672 | mmsp2.mlc_stl_pallt_d[mmsp2.mlc_stl_pallt_a++ & 0x1ff] = d >> 16; |
673 | mmsp2.mlc_stl_pallt_a &= 0x1ff; |
674 | mmsp2.v.dirty_pal = DIRTY_PAL_MMSP2; |
675 | return; |
7000b522 |
676 | // Wiz |
677 | case 0x4024: // MLCCONTROL0 |
678 | case 0x4058: // MLCCONTROL1 |
679 | pollux.mlccontrol = d; |
680 | if (!(d & 0x20)) |
681 | return; // layer not enabled |
682 | if ((d >> 16) == 0x443A) |
683 | pollux.v.bpp = 8; |
684 | else |
685 | pollux.v.bpp = 16; |
686 | return; |
687 | case 0x402c: // MLCVSTRIDE0 |
688 | case 0x4060: // MLCVSTRIDE1 |
689 | pollux.v.stride = d; |
690 | return; |
691 | case 0x4038: // MLCADDRESS0 |
692 | case 0x406c: // MLCADDRESS1 |
693 | pollux.mlc_stl_adr = d; |
d0b9b0df |
694 | if (d != mmsp2.old_mlc_stl_adr) { |
7000b522 |
695 | // ask for refresh |
d0b9b0df |
696 | fb_sync_thread_futex = 1; |
697 | g_futex_raw(&fb_sync_thread_futex, FUTEX_WAKE, 1, NULL); |
698 | } |
7000b522 |
699 | mmsp2.old_mlc_stl_adr = d; |
700 | return; |
701 | case 0x403c: // MLCPALETTE0 |
702 | case 0x4070: // MLCPALETTE1 |
703 | pollux.mlcpalette[d >> 24] = d; |
704 | pollux.v.dirty_pal = DIRTY_PAL_POLLUX; |
705 | return; |
706 | } |
707 | } |
3d295a9f |
708 | if ((a & 0xfff00000) == 0x7f100000) { |
709 | u32 *bl = &blitter.dstctrl; |
6720e4e4 |
710 | u32 a_ = a & 0xfff; |
711 | if (a_ < 0x40) { |
712 | bl[a_ / 4] = d; |
713 | if (a_ == 0x34 && (d & 1)) |
714 | blitter_do(); |
715 | return; |
716 | } |
3d295a9f |
717 | } |
6720e4e4 |
718 | iolog_unh("w32", a, d, 32); |
11913091 |
719 | } |
720 | |
6720e4e4 |
721 | #define LINKPAGE_SIZE 0x1000 |
722 | #define LINKPAGE_COUNT 4 |
723 | #define LINKPAGE_ALLOC (LINKPAGE_SIZE * LINKPAGE_COUNT) |
724 | |
725 | struct op_context { |
726 | u32 pc; |
727 | u32 op; |
728 | u32 code[0]; |
729 | }; |
730 | |
3d3fa63b |
731 | struct op_linkpage { |
890c1dc5 |
732 | u32 *code_ptr; |
6720e4e4 |
733 | void (*handler)(struct op_context *op_ctx); |
734 | u32 code[0]; |
735 | }; |
736 | |
3d3fa63b |
737 | struct op_stackframe { |
738 | u32 saved_regs[15]; |
739 | u32 cpsr; |
740 | }; |
741 | |
890c1dc5 |
742 | static struct op_linkpage *g_linkpages[2]; |
6720e4e4 |
743 | static int g_linkpage_count; |
744 | |
10c900a1 |
745 | enum opcond { |
746 | C_EQ, C_NE, C_CS, C_CC, C_MI, C_PL, C_VS, C_VC, |
747 | C_HI, C_LS, C_GE, C_LT, C_GT, C_LE, C_AL, |
748 | }; |
749 | enum cpsr_cond { |
750 | CPSR_N = (1u << 31), |
751 | CPSR_Z = (1u << 30), |
752 | CPSR_C = (1u << 29), |
753 | CPSR_V = (1u << 28), |
754 | }; |
755 | |
11913091 |
756 | #define BIT_SET(v, b) (v & (1 << (b))) |
757 | |
3d3fa63b |
758 | void emu_handle_op(struct op_context *op_ctx, struct op_stackframe *sframe) |
11913091 |
759 | { |
3d3fa63b |
760 | u32 *regs = sframe->saved_regs; |
10c900a1 |
761 | u32 cpsr = sframe->cpsr; |
6720e4e4 |
762 | u32 op = op_ctx->op; |
11913091 |
763 | u32 t, shift, ret, addr; |
10c900a1 |
764 | int i, rn, rd, cond; |
11913091 |
765 | |
fea1465c |
766 | cond = (op & 0xf0000000) >> 28; |
11913091 |
767 | rd = (op & 0x0000f000) >> 12; |
768 | rn = (op & 0x000f0000) >> 16; |
769 | |
10c900a1 |
770 | if (cond != 0x0e) { |
771 | switch (cond) { |
772 | case C_EQ: if ( (cpsr & CPSR_Z)) break; return; |
773 | case C_NE: if (!(cpsr & CPSR_Z)) break; return; |
774 | case C_CS: if ( (cpsr & CPSR_C)) break; return; |
775 | case C_CC: if (!(cpsr & CPSR_C)) break; return; |
776 | case C_MI: if ( (cpsr & CPSR_N)) break; return; |
777 | case C_PL: if (!(cpsr & CPSR_N)) break; return; |
778 | case C_VS: if ( (cpsr & CPSR_V)) break; return; |
779 | case C_VC: if (!(cpsr & CPSR_V)) break; return; |
780 | default: |
781 | goto unhandled; |
782 | } |
783 | } |
fea1465c |
784 | |
11913091 |
785 | if ((op & 0x0f200090) == 0x01000090) { // AM3: LDRH, STRH |
86418a84 |
786 | if (!BIT_SET(op, 5)) // !H |
787 | goto unhandled; |
788 | if (BIT_SET(op, 6) && !BIT_SET(op, 20)) // S && !L |
11913091 |
789 | goto unhandled; |
790 | |
791 | if (BIT_SET(op, 22)) // imm offset |
792 | t = ((op & 0xf00) >> 4) | (op & 0x0f); |
793 | else // reg offset |
794 | t = regs[op & 0x000f]; |
795 | |
796 | if (!BIT_SET(op, 23)) |
797 | t = -t; |
798 | addr = regs[rn] + t; |
799 | |
800 | if (BIT_SET(op, 20)) { // Load |
801 | ret = xread16(addr); |
86418a84 |
802 | if (BIT_SET(op, 6)) { // S |
803 | ret <<= 16; |
804 | ret = (signed int)ret >> 16; |
805 | } |
11913091 |
806 | regs[rd] = ret; |
807 | } |
808 | else |
809 | xwrite16(addr, regs[rd]); |
810 | } |
fea1465c |
811 | else if ((op & 0x0c000000) == 0x04000000) { // load/store word/byte |
812 | if (BIT_SET(op, 21)) |
813 | goto unhandled; // unprivileged |
11913091 |
814 | if (BIT_SET(op, 25)) { // reg offs |
815 | if (BIT_SET(op, 4)) |
fea1465c |
816 | goto unhandled; // nah it's media |
11913091 |
817 | |
818 | t = regs[op & 0x000f]; |
819 | shift = (op & 0x0f80) >> 7; |
820 | switch ((op & 0x0060) >> 5) { |
821 | case 0: t = t << shift; break; |
822 | case 1: t = t >> (shift + 1); break; |
823 | case 2: t = (signed int)t >> (shift + 1); break; |
824 | case 3: goto unhandled; // I'm just lazy |
825 | } |
826 | } |
827 | else // imm offs |
828 | t = op & 0x0fff; |
829 | |
830 | if (!BIT_SET(op, 23)) |
831 | t = -t; |
fea1465c |
832 | |
833 | addr = regs[rn]; |
834 | if (BIT_SET(op, 24)) // pre-indexed |
835 | addr += t; |
836 | if (!BIT_SET(op, 24) || BIT_SET(op, 21)) |
837 | regs[rn] += t; // writeback |
11913091 |
838 | |
839 | if (BIT_SET(op, 20)) { // Load |
840 | if (BIT_SET(op, 22)) // Byte |
841 | ret = xread8(addr); |
842 | else |
843 | ret = xread32(addr); |
844 | regs[rd] = ret; |
845 | } |
846 | else { |
847 | if (BIT_SET(op, 22)) // Byte |
848 | xwrite8(addr, regs[rd]); |
849 | else |
850 | xwrite32(addr, regs[rd]); |
851 | } |
852 | } |
853 | else |
854 | goto unhandled; |
855 | |
86418a84 |
856 | #if 0 |
11913091 |
857 | if (addr != addr_check) { |
858 | fprintf(stderr, "bad calculated addr: %08x vs %08x\n", addr, addr_check); |
859 | abort(); |
860 | } |
86418a84 |
861 | #endif |
11913091 |
862 | return; |
863 | |
864 | unhandled: |
6720e4e4 |
865 | err("unhandled IO op %08x @ %08x\n", op, op_ctx->pc); |
10c900a1 |
866 | for (i = 0; i < 8-1; i++) |
867 | err(" r%d=%08x r%-2d=%08x\n", i, regs[i], i+8, regs[i+8]); |
868 | err(" r%d=%08x cpsr=%08x\n", i, regs[i], cpsr); |
fea1465c |
869 | abort(); |
86418a84 |
870 | } |
871 | |
872 | static u32 make_offset12(u32 *pc, u32 *target) |
873 | { |
874 | int lp_offs, u = 1; |
875 | |
876 | lp_offs = (char *)target - (char *)pc - 2*4; |
877 | if (lp_offs < 0) { |
878 | lp_offs = -lp_offs; |
879 | u = 0; |
880 | } |
881 | if (lp_offs >= LINKPAGE_SIZE) { |
6720e4e4 |
882 | err("linkpage too far: %d\n", lp_offs); |
86418a84 |
883 | abort(); |
884 | } |
885 | |
886 | return (u << 23) | lp_offs; |
887 | } |
888 | |
6720e4e4 |
889 | static u32 make_jmp(u32 *pc, u32 *target, int bl) |
86418a84 |
890 | { |
891 | int jmp_val; |
892 | |
893 | jmp_val = target - pc - 2; |
890c1dc5 |
894 | if (jmp_val < (int)0xff800000 || jmp_val > 0x007fffff) { |
6720e4e4 |
895 | err("jump out of range (%p -> %p)\n", pc, target); |
86418a84 |
896 | abort(); |
897 | } |
898 | |
6720e4e4 |
899 | return 0xea000000 | (bl << 24) | (jmp_val & 0x00ffffff); |
86418a84 |
900 | } |
901 | |
890c1dc5 |
902 | static void emit_op(struct op_linkpage *linkpage, u32 op) |
86418a84 |
903 | { |
890c1dc5 |
904 | *linkpage->code_ptr++ = op; |
86418a84 |
905 | } |
906 | |
890c1dc5 |
907 | static void emit_op_io(struct op_linkpage *linkpage, |
908 | u32 op, u32 *target) |
86418a84 |
909 | { |
890c1dc5 |
910 | op |= make_offset12(linkpage->code_ptr, target); |
911 | emit_op(linkpage, op); |
86418a84 |
912 | } |
913 | |
890c1dc5 |
914 | static void init_linkpage(struct op_linkpage *linkpage) |
6720e4e4 |
915 | { |
890c1dc5 |
916 | linkpage->handler = emu_call_handle_op; |
917 | linkpage->code_ptr = linkpage->code; |
6720e4e4 |
918 | } |
919 | |
86418a84 |
920 | static void segv_sigaction(int num, siginfo_t *info, void *ctx) |
921 | { |
6c888740 |
922 | extern char _init, _end; |
86418a84 |
923 | struct ucontext *context = ctx; |
924 | u32 *regs = (u32 *)&context->uc_mcontext.arm_r0; |
925 | u32 *pc = (u32 *)regs[15]; |
6c888740 |
926 | u32 self_start, self_end; |
890c1dc5 |
927 | struct op_linkpage *lp = NULL; |
6720e4e4 |
928 | struct op_context *op_ctx; |
890c1dc5 |
929 | int i, ret, lp_i, lp_size; |
86418a84 |
930 | |
6c888740 |
931 | self_start = (u32)&_init & ~0xfff; |
932 | self_end = (u32)&_end; |
933 | |
890c1dc5 |
934 | if ((self_start <= regs[15] && regs[15] <= self_end) || // PC is in our segment or |
935 | !((regs[15] ^ (u32)g_linkpages[0]) & ~(LINKPAGE_ALLOC - 1)) || // .. in linkpage |
936 | ((long)info->si_addr & 0xffe00000) != 0x7f000000) // faulting not where expected |
86418a84 |
937 | { |
938 | // real crash - time to die |
6720e4e4 |
939 | err("segv %d %p @ %08x\n", info->si_code, info->si_addr, regs[15]); |
7fd42181 |
940 | for (i = 0; i < 8; i++) |
10c900a1 |
941 | dbg(" r%d=%08x r%-2d=%08x\n", i, regs[i], i+8, regs[i+8]); |
86418a84 |
942 | signal(num, SIG_DFL); |
943 | raise(num); |
c1ffd5ba |
944 | return; |
86418a84 |
945 | } |
0881206b |
946 | segvlog("segv %d %p @ %08x\n", info->si_code, info->si_addr, regs[15]); |
86418a84 |
947 | |
890c1dc5 |
948 | // find nearby linkpage |
949 | for (lp_i = 0; lp_i < ARRAY_SIZE(g_linkpages); lp_i++) { |
950 | if (g_linkpages[lp_i] == NULL) |
951 | continue; |
952 | i = g_linkpages[lp_i]->code_ptr + 2 - pc - 2; |
953 | if ((int)0xff800000 <= i && i <= 0x007fffff) { |
954 | lp = g_linkpages[lp_i]; |
955 | break; |
956 | } |
957 | } |
958 | |
959 | if (lp == NULL) { |
960 | err("fatal: no nearby linkpage for %08x\n", regs[15]); |
961 | abort(); |
962 | } |
963 | |
964 | if (emu_is_dl) { |
965 | ret = mprotect((void *)((long)pc & ~0xfff), 0x1000, PROT_READ|PROT_WRITE|PROT_EXEC); |
966 | if (ret != 0) |
967 | perror("warning: mprotect"); |
968 | } |
969 | |
86418a84 |
970 | // spit PC and op |
890c1dc5 |
971 | op_ctx = (void *)lp->code_ptr; |
6720e4e4 |
972 | op_ctx->pc = (u32)pc; |
973 | op_ctx->op = *pc; |
890c1dc5 |
974 | lp->code_ptr = &op_ctx->code[0]; |
86418a84 |
975 | |
976 | // emit jump to code ptr |
890c1dc5 |
977 | *pc = make_jmp(pc, lp->code_ptr, 0); |
86418a84 |
978 | |
979 | // generate code: |
890c1dc5 |
980 | emit_op (lp, 0xe50d0000 + 0xf00 - 4 * 0); // str r0, [sp, #(-0xf00 + r0_offs)] |
981 | emit_op (lp, 0xe50de000 + 0xf00 - 4 * 14); // str lr, [sp, #(-0xf00 + lr_offs)] |
982 | emit_op (lp, 0xe24f0000 + (lp->code_ptr - (u32 *)op_ctx + 2) * 4); // sub r0, pc, #op_ctx |
983 | emit_op (lp, 0xe1a0e00f); // mov lr, pc |
984 | emit_op_io(lp, 0xe51ff000, (u32 *)&lp->handler); // ldr pc, =handle_op |
985 | emit_op (lp, 0xe51de000 + 0xf00 - 4 * 14); // ldr lr, [sp, #(-0xf00 + lr_offs)] |
986 | emit_op (lp, make_jmp(lp->code_ptr, pc + 1, 0)); // jmp <back> |
86418a84 |
987 | |
988 | // sync caches |
989 | sys_cacheflush(pc, pc + 1); |
890c1dc5 |
990 | sys_cacheflush(lp, lp->code_ptr); |
86418a84 |
991 | |
890c1dc5 |
992 | lp_size = (char *)lp->code_ptr - (char *)lp; |
0881206b |
993 | segvlog("code #%d %d/%d\n", g_linkpage_count, lp_size, LINKPAGE_SIZE); |
86418a84 |
994 | |
890c1dc5 |
995 | if (lp_size + 14*4 > LINKPAGE_SIZE) { |
86418a84 |
996 | g_linkpage_count++; |
997 | if (g_linkpage_count >= LINKPAGE_COUNT) { |
6720e4e4 |
998 | err("too many linkpages needed\n"); |
86418a84 |
999 | abort(); |
1000 | } |
890c1dc5 |
1001 | g_linkpages[lp_i] = (void *)((char *)g_linkpages[lp_i] + LINKPAGE_SIZE); |
1002 | init_linkpage(g_linkpages[lp_i]); |
86418a84 |
1003 | } |
1004 | //handle_op(regs[15], op, regs, (u32)info->si_addr); |
1005 | //regs[15] += 4; |
1006 | } |
11913091 |
1007 | |
890c1dc5 |
1008 | void emu_init(void *map_bottom[2], int is_dl) |
11913091 |
1009 | { |
7fd42181 |
1010 | sigaction_t segv_action = { |
11913091 |
1011 | .sa_sigaction = segv_sigaction, |
1012 | .sa_flags = SA_SIGINFO, |
1013 | }; |
6720e4e4 |
1014 | void *pret; |
890c1dc5 |
1015 | int i, ret; |
11913091 |
1016 | |
830ba1bf |
1017 | #ifdef PND |
1018 | if (geteuid() == 0) { |
b4f4cb40 |
1019 | err("don't try to run as root, device registers or memory " |
1020 | "might get trashed crashing the OS or even damaging the device.\n"); |
830ba1bf |
1021 | exit(1); |
1022 | } |
1023 | #endif |
1024 | |
890c1dc5 |
1025 | emu_is_dl = is_dl; |
1026 | |
1027 | for (i = 0; i < 2; i++) { |
1028 | if (map_bottom[i] == NULL) |
1029 | continue; |
1030 | g_linkpages[i] = (void *)(((u32)map_bottom[i] - LINKPAGE_ALLOC) & ~0xfff); |
1031 | pret = mmap(g_linkpages[i], LINKPAGE_ALLOC, PROT_READ|PROT_WRITE, |
1032 | MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED, -1, 0); |
1033 | if (pret != g_linkpages[i]) { |
1034 | err("linkpage alloc @ %p: ", g_linkpages[i]); |
1035 | perror(NULL); |
1036 | exit(1); |
1037 | } |
1038 | log("linkpages @ %p\n", g_linkpages[i]); |
1039 | init_linkpage(g_linkpages[i]); |
11913091 |
1040 | } |
11913091 |
1041 | |
4d045184 |
1042 | // host stuff |
1043 | ret = host_init(); |
1044 | if (ret != 0) { |
1045 | err("can't init host\n"); |
3d3fa63b |
1046 | exit(1); |
1047 | } |
1048 | |
4d045184 |
1049 | ret = host_video_init(NULL, 0); |
2ce69bdf |
1050 | if (ret != 0) { |
4d045184 |
1051 | err("can't init host video\n"); |
1052 | exit(1); |
1053 | } |
1054 | |
5853ddbd |
1055 | // TODO: check if this really fails on Wiz.. |
4d045184 |
1056 | mmsp2.umem = mmap(NULL, 0x2000000, PROT_READ|PROT_WRITE|PROT_EXEC, |
1057 | MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); |
5853ddbd |
1058 | #ifdef WIZ |
1059 | if (mmsp2.umem == MAP_FAILED) { |
1060 | // we are short on memmory on Wiz, need special handling |
1061 | extern void *host_mmap_upper(void); |
1062 | mmsp2.umem = host_mmap_upper(); |
1063 | } |
4d045184 |
1064 | #endif |
1065 | if (mmsp2.umem == MAP_FAILED) { |
1066 | perror(PFX "mmap upper mem"); |
3d295a9f |
1067 | exit(1); |
1068 | } |
c1ffd5ba |
1069 | |
d0b9b0df |
1070 | pret = mmap(NULL, THREAD_STACK_SIZE, PROT_READ|PROT_WRITE|PROT_EXEC, |
1071 | MAP_PRIVATE|MAP_ANONYMOUS|MAP_GROWSDOWN, -1, 0); |
1072 | if (mmsp2.umem == MAP_FAILED) { |
1073 | perror(PFX "mmap thread stack"); |
1074 | exit(1); |
1075 | } |
1076 | fb_sync_thread_futex = 1; |
1077 | ret = g_clone(CLONE_VM | CLONE_FS | CLONE_FILES |
1078 | | CLONE_SIGHAND | CLONE_THREAD, |
1079 | (char *)pret + THREAD_STACK_SIZE, 0, 0, 0, |
1080 | fb_sync_thread); |
1081 | if (ret == 0 || ret == -1) { |
1082 | perror(PFX "start fb thread"); |
c1ffd5ba |
1083 | exit(1); |
1084 | } |
d0b9b0df |
1085 | g_futex_raw(&fb_sync_thread_futex, FUTEX_WAIT, 1, NULL); |
c1ffd5ba |
1086 | |
7000b522 |
1087 | // defaults |
c1ffd5ba |
1088 | mmsp2.mlc_stl_adr = 0x03101000; // fb2 is at 0x03381000 |
7fd42181 |
1089 | mmsp2.mlc_stl_cntl = 0x4ab; // 16bpp, region 1 active |
7000b522 |
1090 | mmsp2.v.width = 320; |
1091 | mmsp2.v.height = 240; |
1092 | mmsp2.v.stride = 320*2; |
1093 | mmsp2.v.bpp = 16; |
1094 | mmsp2.v.dirty_pal = 1; |
c1ffd5ba |
1095 | |
1096 | sigemptyset(&segv_action.sa_mask); |
1097 | sigaction(SIGSEGV, &segv_action, NULL); |
3d295a9f |
1098 | } |
1099 | |
b4f4cb40 |
1100 | static long emu_mmap_dev(unsigned int length, int prot, int flags, unsigned int offset) |
11913091 |
1101 | { |
3d3fa63b |
1102 | u8 *umem, *umem_end; |
11913091 |
1103 | |
3d295a9f |
1104 | // SoC regs |
7000b522 |
1105 | if ((offset & ~0x1ffff) == 0xc0000000) { |
b4f4cb40 |
1106 | return g_mmap2_raw((void *)0x7f000000, length, PROT_NONE, |
11913091 |
1107 | MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED|MAP_NORESERVE, -1, 0); |
1108 | } |
7000b522 |
1109 | // MMSP2 blitter |
11913091 |
1110 | if ((offset & ~0xffff) == 0xe0020000) { |
b4f4cb40 |
1111 | return g_mmap2_raw((void *)0x7f100000, length, PROT_NONE, |
11913091 |
1112 | MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED|MAP_NORESERVE, -1, 0); |
1113 | } |
3d295a9f |
1114 | // upper mem |
3d3fa63b |
1115 | if ((offset & 0xfe000000) != 0x02000000) { |
6720e4e4 |
1116 | err("unexpected devmem mmap @ %08x\n", offset); |
b4f4cb40 |
1117 | return -EINVAL; |
3d295a9f |
1118 | } |
1119 | |
3d3fa63b |
1120 | umem = uppermem_lookup(offset, &umem_end); |
1121 | if (umem + length > umem_end) |
1122 | err("warning: uppermem @ %08x overflows by %d bytes\n", |
1123 | offset, umem + length - umem_end); |
1124 | |
3ef07128 |
1125 | dbg("upper mem @ %08x %x = %p\n", offset, length, umem); |
b4f4cb40 |
1126 | return (long)umem; |
11913091 |
1127 | } |
1128 | |
b4f4cb40 |
1129 | long emu_do_mmap(unsigned int length, int prot, int flags, int fd, |
1130 | unsigned int offset) |
dc90c02d |
1131 | { |
1132 | if (fd == FAKEDEV_MEM) |
1133 | return emu_mmap_dev(length, prot, flags, offset); |
1134 | |
1135 | if (fd == FAKEDEV_FB0) |
1136 | return emu_mmap_dev(length, prot, flags, offset + 0x03101000); |
1137 | |
1138 | if (fd == FAKEDEV_FB1) |
1139 | return emu_mmap_dev(length, prot, flags, offset + 0x03381000); |
1140 | |
7fd42181 |
1141 | err("bad/ni mmap(?, %d, %x, %x, %d, %08x)\n", length, prot, flags, fd, offset); |
b4f4cb40 |
1142 | return -EINVAL; |
dc90c02d |
1143 | } |
1144 | |
b4f4cb40 |
1145 | long emu_do_munmap(void *addr, unsigned int length) |
3ef07128 |
1146 | { |
1147 | u8 *p = addr; |
1148 | |
1149 | // don't allow to unmap upper mem |
1150 | if ((u8 *)mmsp2.umem <= p && p < (u8 *)mmsp2.umem + 0x2000000) { |
1151 | dbg("ignoring munmap: %p %x\n", addr, length); |
1152 | return 0; |
1153 | } |
1154 | |
1155 | return -EAGAIN; |
1156 | } |
1157 | |
7000b522 |
1158 | static void emu_sound_open(int fd) |
1159 | { |
1160 | #ifdef PND |
1161 | int ret, frag; |
1162 | |
1163 | // set default buffer size to 16 * 1K |
1164 | frag = (16<<16) | 10; // 16K |
b4f4cb40 |
1165 | ret = g_ioctl_raw(fd, SNDCTL_DSP_SETFRAGMENT, &frag); |
1166 | if (ret != 0) |
1167 | err("snd ioctl SETFRAGMENT %08x: %d\n", frag, ret); |
7000b522 |
1168 | #endif |
1169 | } |
1170 | |
b4f4cb40 |
1171 | static long emu_sound_ioctl(int fd, int request, void *argp) |
dc90c02d |
1172 | { |
1173 | int *arg = argp; |
1174 | |
1175 | #if 0 |
1176 | dbg("snd ioctl(%d, %08x, %p)", fd, request, argp); |
1177 | if (arg != NULL) |
1178 | dbg_c(" [%d]", *arg); |
1179 | dbg_c("\n"); |
1180 | #endif |
1181 | |
1182 | /* People set strange frag settings on GP2X, which even manage |
1183 | * to break audio on pandora (causes writes to fail). |
1184 | * Catch this and set to something that works. */ |
7000b522 |
1185 | switch(request) { |
1186 | case SNDCTL_DSP_SETFRAGMENT: { |
b4f4cb40 |
1187 | int bsize, frag, frag_cnt; |
1188 | long ret; |
1189 | |
7000b522 |
1190 | if (arg == NULL) |
1191 | break; |
dc90c02d |
1192 | |
7000b522 |
1193 | frag = *arg & 0xffff; |
1194 | frag_cnt = *arg >> 16; |
1195 | bsize = frag_cnt << frag; |
1196 | if (frag < 10 || bsize < 4096*4 || bsize > 4096*4*2) { |
1197 | /* |
1198 | * ~4ms. gpSP wants small buffers or else it stutters |
1199 | * because of it's audio thread sync stuff |
1200 | * XXX: hardcoding, as low samplerates will result in small fragment size, |
1201 | * which itself causes ALSA stall and hangs the program. |
1202 | * Also some apps change samplerate without reopening /dev/dsp, |
1203 | * which causes ALSA to reject SNDCTL_DSP_SETFRAGMENT. |
1204 | */ |
1205 | bsize = 44100 / 250 * 4; |
1206 | |
1207 | for (frag = 0; bsize; bsize >>= 1, frag++) |
1208 | ; |
1209 | |
1210 | frag_cnt = 16; |
1211 | } |
dc90c02d |
1212 | |
7000b522 |
1213 | frag |= frag_cnt << 16; |
b4f4cb40 |
1214 | ret = g_ioctl_raw(fd, SNDCTL_DSP_SETFRAGMENT, &frag); |
1215 | if (ret != 0) |
1216 | err("snd ioctl SETFRAGMENT %08x: %ld\n", frag, ret); |
7000b522 |
1217 | // indicate success even if we fail (because of ALSA mostly), |
1218 | // things like MikMod will bail out otherwise. |
1219 | return 0; |
dc90c02d |
1220 | } |
7000b522 |
1221 | case SNDCTL_DSP_SYNC: |
1222 | // Franxis tends to use sync/write loops, bad idea under ALSA |
1223 | return 0; |
1224 | default: |
1225 | break; |
dc90c02d |
1226 | } |
dc90c02d |
1227 | |
b4f4cb40 |
1228 | return g_ioctl_raw(fd, request, argp); |
dc90c02d |
1229 | } |
1230 | |
b4f4cb40 |
1231 | long emu_do_ioctl(int fd, int request, void *argp) |
dc90c02d |
1232 | { |
1233 | if (fd == emu_interesting_fds[IFD_SOUND].fd) |
1234 | return emu_sound_ioctl(fd, request, argp); |
1235 | |
7fd42181 |
1236 | switch (fd) { |
1237 | /* *********************** */ |
1238 | case FAKEDEV_FB0: |
1239 | case FAKEDEV_FB1: |
1240 | if (argp == NULL) |
1241 | goto fail; |
dc90c02d |
1242 | |
dc90c02d |
1243 | switch (request) { |
1244 | case FBIOGET_FSCREENINFO: { |
1245 | struct fb_fix_screeninfo *fix = argp; |
1246 | |
1247 | memset(fix, 0, sizeof(*fix)); |
1248 | strcpy(fix->id, "mmsp2_RGB0"); |
1249 | fix->type = FB_TYPE_PACKED_PIXELS; |
1250 | fix->accel = FB_ACCEL_NONE; |
7fd42181 |
1251 | fix->visual = FB_VISUAL_TRUECOLOR; |
1252 | fix->line_length = 320*2; |
dc90c02d |
1253 | fix->smem_start = (fd == FAKEDEV_FB0) ? 0x03101000 : 0x03381000; |
1254 | fix->smem_len = 320*240*2; |
1255 | return 0; |
1256 | } |
1257 | case FBIOGET_VSCREENINFO: { |
1258 | struct fb_var_screeninfo *var = argp; |
7fd42181 |
1259 | static const struct fb_bitfield fbb_red = { offset: 11, length: 5, }; |
1260 | static const struct fb_bitfield fbb_green = { offset: 5, length: 6, }; |
1261 | static const struct fb_bitfield fbb_blue = { offset: 0, length: 5, }; |
dc90c02d |
1262 | |
1263 | memset(var, 0, sizeof(*var)); |
1264 | var->activate = FB_ACTIVATE_NOW; |
1265 | var->xres = |
1266 | var->xres_virtual = 320; |
1267 | var->yres = |
1268 | var->yres_virtual = 240; |
1269 | var->width = |
1270 | var->height = -1; |
1271 | var->vmode = FB_VMODE_NONINTERLACED; |
1272 | var->bits_per_pixel = 16; |
1273 | var->red = fbb_red; |
1274 | var->green = fbb_green; |
1275 | var->blue = fbb_blue; |
1276 | return 0; |
1277 | } |
7fd42181 |
1278 | case FBIOPUT_VSCREENINFO: { |
1279 | struct fb_var_screeninfo *var = argp; |
1280 | dbg(" put vscreen: %dx%d@%d\n", var->xres, var->yres, var->bits_per_pixel); |
1281 | if (var->xres != 320 || var->yres != 240 || var->bits_per_pixel != 16) |
1282 | return -1; |
1283 | return 0; |
1284 | } |
dc90c02d |
1285 | } |
7fd42181 |
1286 | |
1287 | /* *********************** */ |
1288 | case FAKEDEV_TTY0: |
1289 | // fake tty0 to make GPH SDL happy |
1290 | if (request == 0x4b46) // KDGKBENT |
1291 | return -1; |
1292 | return 0; |
dc90c02d |
1293 | } |
1294 | |
1295 | fail: |
7fd42181 |
1296 | err("bad/ni ioctl(%d, %08x, %p)\n", fd, request, argp); |
b4f4cb40 |
1297 | return -EINVAL; |
dc90c02d |
1298 | } |
1299 | |
8cbb0278 |
1300 | static const char wm97xx_p[] = |
1301 | "5507 0 -831476 0 -4218 16450692 65536"; // from 4.0 fw |
1302 | |
88d814e3 |
1303 | long emu_do_read(int fd, void *buf, int count) |
1304 | { |
88d814e3 |
1305 | int ret, pressed = 0, x, y; |
1306 | struct { |
1307 | u16 pressure, x, y; |
1308 | } wm97xx; |
1309 | |
1310 | if (count < 0) { |
1311 | err("read(%d, %d)\n", fd, count); |
1312 | return -EINVAL; |
1313 | } |
1314 | |
1315 | switch (fd) { |
1316 | case FAKEDEV_GPIO: |
1317 | mmsp2.btn_state = host_read_btns(); |
1318 | |
1319 | if (count > 4) |
1320 | count = 4; |
1321 | memcpy(buf, &mmsp2.btn_state, count); |
1322 | break; |
1323 | case FAKEDEV_WM97XX: |
1324 | ret = host_read_ts(&pressed, &x, &y); |
1325 | if (ret == 0 && pressed) { |
8cbb0278 |
1326 | wm97xx.pressure = 0x8001; // TODO: check the real thing |
88d814e3 |
1327 | wm97xx.x = x * 3750 / 1024 + 200; |
1328 | wm97xx.y = 3750 - y * 3750 / 1024 + 200; |
1329 | } |
1330 | else { |
1331 | wm97xx.pressure = 0; |
1332 | wm97xx.x = wm97xx.y = 200; |
1333 | } |
1334 | |
1335 | if (count > sizeof(wm97xx)) |
1336 | count = sizeof(wm97xx); |
1337 | memcpy(buf, &wm97xx, count); |
1338 | break; |
1339 | case FAKEDEV_WM97XX_P: |
1340 | if (count < sizeof(wm97xx_p)) |
1341 | err("incomplete pointercal read\n"); |
1342 | strncpy(buf, wm97xx_p, count); |
1343 | break; |
1344 | default: |
8cbb0278 |
1345 | dbg("read(%d, %d)\n", fd, count); |
88d814e3 |
1346 | return -EINVAL; |
1347 | } |
1348 | return count; |
1349 | } |
1350 | |
7000b522 |
1351 | struct dev_fd_t emu_interesting_fds[] = { |
1352 | [IFD_SOUND] = { "/dev/dsp", -1, emu_sound_open }, |
1353 | { NULL, 0, NULL }, |
1354 | }; |
1355 | |
7fd42181 |
1356 | static const struct { |
1357 | const char *from; |
1358 | const char *to; |
1359 | } path_map[] = { |
158ddd8d |
1360 | { "/mnt/tmp", "./tmp" }, |
2692251d |
1361 | { "/mnt/sd", "./mntsd" }, |
7fd42181 |
1362 | }; |
1363 | |
2692251d |
1364 | const char *emu_wrap_path(const char *path) |
7fd42181 |
1365 | { |
158ddd8d |
1366 | char *buff, *p; |
3d3fa63b |
1367 | size_t size; |
7fd42181 |
1368 | int i, len; |
2692251d |
1369 | long ret; |
7fd42181 |
1370 | |
1371 | // do only path mapping for now |
1372 | for (i = 0; i < ARRAY_SIZE(path_map); i++) { |
158ddd8d |
1373 | p = strstr(path, path_map[i].from); |
1374 | if (p != NULL) { |
3d3fa63b |
1375 | size = strlen(path) + strlen(path_map[i].to) + 1; |
1376 | buff = malloc(size); |
1377 | if (buff == NULL) |
1378 | break; |
158ddd8d |
1379 | len = p - path; |
1380 | strncpy(buff, path, len); |
1381 | snprintf(buff + len, size - len, "%s%s", path_map[i].to, |
1382 | path + len + strlen(path_map[i].from)); |
3d3fa63b |
1383 | dbg("mapped path \"%s\" -> \"%s\"\n", path, buff); |
2692251d |
1384 | |
1385 | ret = g_mkdir_raw(path_map[i].to, 0666); |
1386 | if (ret != 0 && ret != -EEXIST) |
1387 | err("mkdir(%s): %ld\n", path_map[i].to, ret); |
1388 | |
3d3fa63b |
1389 | return buff; |
7fd42181 |
1390 | } |
1391 | } |
1392 | |
1393 | return path; |
1394 | } |
1395 | |
2692251d |
1396 | void emu_wrap_path_free(const char *w_path, const char *old_path) |
7000b522 |
1397 | { |
1398 | if (w_path != old_path) |
1399 | free((void *)w_path); |
1400 | } |
1401 | |
7fd42181 |
1402 | void *emu_do_fopen(const char *path, const char *mode) |
1403 | { |
7000b522 |
1404 | const char *w_path; |
3d3fa63b |
1405 | FILE *ret; |
7000b522 |
1406 | |
8cbb0278 |
1407 | if (strcmp(path, "/etc/pointercal") == 0) { |
1408 | // use local pontercal, not host's |
1409 | ret = fopen("pointercal", mode); |
1410 | if (ret == NULL) { |
1411 | ret = fopen("pointercal", "w"); |
1412 | if (ret != NULL) { |
1413 | fwrite(wm97xx_p, 1, sizeof(wm97xx_p), ret); |
1414 | fclose(ret); |
1415 | } |
1416 | ret = fopen("pointercal", mode); |
1417 | } |
1418 | } |
1419 | else { |
1420 | w_path = emu_wrap_path(path); |
1421 | ret = fopen(w_path, mode); |
1422 | emu_wrap_path_free(w_path, path); |
1423 | } |
7000b522 |
1424 | |
3d3fa63b |
1425 | return ret; |
7fd42181 |
1426 | } |
1427 | |
3d3fa63b |
1428 | // FIXME: threads.. |
7fd42181 |
1429 | int emu_do_system(const char *command) |
1430 | { |
1431 | static char tmp_path[512]; |
158ddd8d |
1432 | int need_ginge = 0; |
3d3fa63b |
1433 | const char *p2; |
1434 | char *p; |
db9191ed |
1435 | int ret; |
7fd42181 |
1436 | |
1437 | if (command == NULL) |
1438 | return -1; |
1439 | |
158ddd8d |
1440 | for (p2 = command; *p2 && isspace(*p2); p2++) |
1441 | ; |
7fd42181 |
1442 | |
158ddd8d |
1443 | if (*p2 == '.') // relative path? |
1444 | need_ginge = 1; |
1445 | else if (*p2 == '/' && strncmp(p2, "/bin", 4) && strncmp(p2, "/lib", 4) |
1446 | && strncmp(p2, "/sbin", 4) && strncmp(p2, "/usr", 4)) |
1447 | // absolute path, but not a system command |
1448 | need_ginge = 1; |
7fd42181 |
1449 | |
2692251d |
1450 | p2 = emu_wrap_path(command); |
158ddd8d |
1451 | if (need_ginge) { |
1452 | make_local_path(tmp_path, sizeof(tmp_path), "ginge_prep"); |
1453 | p = tmp_path + strlen(tmp_path); |
1454 | |
1455 | snprintf(p, sizeof(tmp_path) - (p - tmp_path), " --nomenu %s", p2); |
1456 | } |
1457 | else |
1458 | snprintf(tmp_path, sizeof(tmp_path), "%s", p2); |
2692251d |
1459 | emu_wrap_path_free(p2, command); |
3d3fa63b |
1460 | |
7fd42181 |
1461 | dbg("system: \"%s\"\n", tmp_path); |
db9191ed |
1462 | |
1463 | // the app might want the screen too.. |
1464 | fb_thread_pause(); |
1465 | ret = system(tmp_path); |
1466 | fb_thread_resume(); |
1467 | return ret; |
7fd42181 |
1468 | } |
1469 | |
78684356 |
1470 | long emu_do_execve(const char *filename, char * const argv[], |
1471 | char * const envp[]) |
7000b522 |
1472 | { |
1473 | const char **new_argv; |
1474 | char *prep_path; |
78684356 |
1475 | int i, argc; |
1476 | long ret; |
7000b522 |
1477 | |
1478 | if (filename == NULL) |
1479 | return -1; |
1480 | |
78684356 |
1481 | if (strstr(filename, "gp2xmenu") != NULL) |
1482 | host_forced_exit(0); |
7000b522 |
1483 | |
1484 | for (i = 0; argv[i] != NULL; i++) |
1485 | ; |
1486 | argc = i + 1; |
1487 | |
1488 | new_argv = calloc(argc + 2, sizeof(new_argv[0])); |
1489 | if (new_argv == NULL) |
1490 | return -1; |
1491 | |
1492 | prep_path = malloc(512); |
1493 | if (prep_path == NULL) |
1494 | return -1; |
1495 | |
1496 | make_local_path(prep_path, 512, "ginge_prep"); |
1497 | new_argv[0] = prep_path; |
1498 | new_argv[1] = "--nomenu"; |
2692251d |
1499 | new_argv[2] = emu_wrap_path(filename); |
7000b522 |
1500 | |
1501 | if (argv[0] != NULL) |
1502 | for (i = 1; argv[i] != NULL; i++) |
1503 | new_argv[i + 2] = argv[i]; |
1504 | |
1505 | dbg("execve \"%s\" %s \"%s\"\n", new_argv[0], new_argv[1], new_argv[2]); |
1506 | ret = execve(new_argv[0], (char **)new_argv, envp); |
78684356 |
1507 | err("execve(%s): %ld\n", new_argv[0], ret); |
7000b522 |
1508 | return ret; |
1509 | } |
1510 | |
499bf01c |
1511 | // vim:shiftwidth=2:expandtab |