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; |
7510900a |
82 | static int emu_force_snd_frag; |
890c1dc5 |
83 | |
3d295a9f |
84 | static struct { |
85 | u32 dstctrl; |
86 | u32 dstaddr; |
87 | u32 dststride; |
88 | u32 srcctrl; |
89 | u32 srcaddr; // |
90 | u32 srcstride; |
91 | u32 srcforcolor; |
92 | u32 srcbackcolor; |
93 | u32 patctrl; // |
94 | u32 patforcolor; |
95 | u32 patbackcolor; |
96 | u32 size; |
97 | u32 ctrl; // |
98 | u32 run; |
99 | u32 intc; |
100 | u32 srcfifo; |
101 | } blitter; |
102 | |
0881206b |
103 | #define SRCCTRL_INVIDEO (1 << 8) |
104 | #define SRCCTRL_SRCENB (1 << 7) |
105 | #define CTRL_TRANSPARENCYENB (1 << 11) |
106 | |
3d295a9f |
107 | static struct { |
7000b522 |
108 | // mmsp2 |
6720e4e4 |
109 | u16 mlc_stl_cntl; |
3d295a9f |
110 | union { |
7000b522 |
111 | u32 mlc_stl_adr; // mlcaddress for pollux |
3d295a9f |
112 | struct { |
6720e4e4 |
113 | u16 mlc_stl_adrl; |
114 | u16 mlc_stl_adrh; |
3d295a9f |
115 | }; |
116 | }; |
6720e4e4 |
117 | u16 mlc_stl_pallt_a; |
118 | union { |
119 | u16 mlc_stl_pallt_d[256*2]; |
120 | u32 mlc_stl_pallt_d32[256]; |
121 | }; |
122 | |
7000b522 |
123 | // pollux |
124 | u32 mlccontrol; |
125 | u16 mlcpalette[256]; |
126 | |
6720e4e4 |
127 | // state |
3d3fa63b |
128 | void *umem; |
6720e4e4 |
129 | u32 old_mlc_stl_adr; |
7000b522 |
130 | u32 btn_state; // as seen through /dev/GPIO: 0PVdVu YXBA RLSeSt 0Ri0Dn 0Le0Up |
131 | struct { |
132 | u32 width, height; |
133 | u32 stride; |
134 | u32 bpp; |
135 | u32 dirty_pal:2; |
136 | } v; |
3d295a9f |
137 | } mmsp2; |
7000b522 |
138 | #define pollux mmsp2 // so that code doesn't look that weird |
139 | enum { |
140 | DIRTY_PAL_MMSP2 = 1, |
141 | DIRTY_PAL_POLLUX = 2, |
142 | }; |
3d295a9f |
143 | |
11913091 |
144 | |
c1ffd5ba |
145 | #if defined(LOG_IO) || defined(LOG_IO_UNK) |
6720e4e4 |
146 | static void log_io(const char *pfx, u32 a, u32 d, int size) |
147 | { |
148 | const char *fmt, *reg = ""; |
149 | switch (size) { |
c1ffd5ba |
150 | case 8: fmt = "%s %08x %02x %s\n"; d &= 0xff; break; |
151 | case 32: fmt = "%s %08x %08x %s\n"; break; |
152 | default: fmt = "%s %08x %04x %s\n"; d &= 0xffff; break; |
6720e4e4 |
153 | } |
154 | |
155 | if ((a & ~0xffff) == 0x7f000000) |
156 | reg = regnames[a & 0xffff]; |
157 | |
d0b9b0df |
158 | g_printf(fmt, pfx, a, d, reg); |
6720e4e4 |
159 | } |
160 | #endif |
161 | |
0881206b |
162 | static void memset16(void *dst, u32 pattern, int count) |
163 | { |
164 | u32 *dl; |
165 | u16 *d; |
166 | |
167 | d = (u16 *)((long)dst & ~1); |
168 | if ((long)d & 2) { |
169 | *d++ = pattern; |
170 | count--; |
171 | } |
172 | dl = (void *)d; |
173 | pattern |= pattern << 16; |
174 | |
175 | while (count >= 2) { |
176 | *dl++ = pattern; |
177 | count -= 2; |
178 | } |
179 | if (count) |
180 | *(u16 *)dl = pattern; |
181 | } |
182 | |
183 | static void blt_tr(void *dst, void *src, u32 trc, int w) |
184 | { |
185 | u16 *d = (u16 *)((long)dst & ~1); |
186 | u16 *s = (u16 *)((long)src & ~1); |
187 | |
188 | // XXX: optimize |
189 | for (; w > 0; d++, s++, w--) |
190 | if (*s != trc) |
191 | *d = *s; |
192 | } |
193 | |
194 | #define dump_blitter() \ |
195 | { \ |
196 | u32 *r = &blitter.dstctrl; \ |
197 | int i; \ |
198 | for (i = 0; i < 4*4; i++, r++) { \ |
d0b9b0df |
199 | g_printf("%08x ", *r); \ |
0881206b |
200 | if ((i & 3) == 3) \ |
d0b9b0df |
201 | g_printf("\n"); \ |
0881206b |
202 | } \ |
203 | } |
204 | |
6720e4e4 |
205 | static void *uppermem_lookup(u32 addr, u8 **mem_end) |
11913091 |
206 | { |
3d3fa63b |
207 | // XXX: maybe support mirroring? |
208 | if ((addr & 0xfe000000) != 0x02000000) |
209 | return NULL; |
3d295a9f |
210 | |
3d3fa63b |
211 | *mem_end = (u8 *)mmsp2.umem + 0x02000000; |
212 | return (u8 *)mmsp2.umem - 0x02000000 + addr; |
11913091 |
213 | } |
214 | |
3d295a9f |
215 | static void blitter_do(void) |
11913091 |
216 | { |
0881206b |
217 | u8 *dst, *dste, *src = NULL, *srce = NULL; |
3d295a9f |
218 | int w, h, sstrd, dstrd; |
6720e4e4 |
219 | int to_screen = 0; |
dc90c02d |
220 | u32 bpp, addr; |
3d295a9f |
221 | |
222 | w = blitter.size & 0x7ff; |
223 | h = (blitter.size >> 16) & 0x7ff; |
224 | sstrd = blitter.srcstride; |
225 | dstrd = blitter.dststride; |
226 | |
0881206b |
227 | // XXX: need to confirm this.. |
228 | addr = (blitter.dstaddr & ~3) | ((blitter.dstctrl & 0x1f) >> 3); |
c1ffd5ba |
229 | |
dc90c02d |
230 | // use dst bpp.. How does it do blits with different src bpp? |
231 | bpp = (blitter.dstctrl & 0x20) ? 16 : 8; |
232 | |
c1ffd5ba |
233 | // maybe the screen? |
dc90c02d |
234 | if (((w == 320 && h == 240) || // blit whole screen |
235 | (w * h >= 320*240/2)) && // ..or at least half of the area |
236 | mmsp2.mlc_stl_adr <= addr && addr < mmsp2.mlc_stl_adr + 320*240*2) |
c1ffd5ba |
237 | to_screen = 1; |
238 | |
239 | dst = uppermem_lookup(addr, &dste); |
0881206b |
240 | |
241 | // XXX: assume fill if no SRCENB, but it could be pattern blit.. |
242 | if (blitter.srcctrl & SRCCTRL_SRCENB) { |
243 | if (!(blitter.srcctrl & SRCCTRL_INVIDEO)) |
244 | goto bad_blit; |
245 | |
246 | addr = (blitter.srcaddr & ~3) | ((blitter.srcctrl & 0x1f) >> 3); |
c1ffd5ba |
247 | src = uppermem_lookup(addr, &srce); |
0881206b |
248 | if (src == NULL) |
249 | goto bad_blit; |
250 | |
251 | if (src + sstrd * h > srce) { |
6720e4e4 |
252 | err("blit %08x->%08x %dx%d did not fit src\n", |
0881206b |
253 | blitter.srcaddr, blitter.dstaddr, w, h); |
254 | h = (srce - src) / sstrd; |
255 | } |
3d295a9f |
256 | } |
257 | |
dc90c02d |
258 | if (dst == NULL) |
259 | goto bad_blit; |
260 | |
3d295a9f |
261 | if (dst + dstrd * h > dste) { |
6720e4e4 |
262 | err("blit %08x->%08x %dx%d did not fit dst\n", |
3d295a9f |
263 | blitter.srcaddr, blitter.dstaddr, w, h); |
264 | h = (dste - dst) / dstrd; |
265 | } |
266 | |
0881206b |
267 | if (src != NULL) { |
268 | // copy |
dc90c02d |
269 | if (bpp == 16 && (blitter.ctrl & CTRL_TRANSPARENCYENB)) { |
0881206b |
270 | u32 trc = blitter.ctrl >> 16; |
271 | for (; h > 0; h--, dst += dstrd, src += sstrd) |
272 | blt_tr(dst, src, trc, w); |
273 | } |
274 | else { |
275 | for (; h > 0; h--, dst += dstrd, src += sstrd) |
dc90c02d |
276 | memcpy(dst, src, w * bpp / 8); |
0881206b |
277 | } |
3d295a9f |
278 | } |
0881206b |
279 | else { |
280 | // fill. Assume the pattern is cleared and bg color is used |
281 | u32 bgc = blitter.patbackcolor & 0xffff; |
dc90c02d |
282 | if (bpp == 16) { |
283 | for (; h > 0; h--, dst += dstrd) |
284 | memset16(dst, bgc, w); |
285 | } |
286 | else { |
287 | for (; h > 0; h--, dst += dstrd) |
288 | memset(dst, bgc, w); // bgc? |
289 | } |
0881206b |
290 | } |
6720e4e4 |
291 | |
d0b9b0df |
292 | if (to_screen) { |
293 | fb_sync_thread_futex = 1; |
294 | g_futex_raw(&fb_sync_thread_futex, FUTEX_WAKE, 1, NULL); |
295 | } |
0881206b |
296 | return; |
3d295a9f |
297 | |
0881206b |
298 | bad_blit: |
6720e4e4 |
299 | err("blit %08x->%08x %dx%d translated to %p->%p\n", |
0881206b |
300 | blitter.srcaddr, blitter.dstaddr, w, h, src, dst); |
301 | dump_blitter(); |
3d295a9f |
302 | } |
303 | |
4d045184 |
304 | // FIXME: pass real dimensions to blitters |
7000b522 |
305 | static void mlc_flip(void *src, int bpp, int stride) |
6720e4e4 |
306 | { |
6ca08393 |
307 | static int old_bpp; |
6720e4e4 |
308 | |
4d045184 |
309 | // only pass pal to host if it's dirty |
7000b522 |
310 | if (bpp <= 8 && mmsp2.v.dirty_pal) { |
311 | if (mmsp2.v.dirty_pal == DIRTY_PAL_MMSP2) |
312 | host_video_update_pal32(mmsp2.mlc_stl_pallt_d32); |
313 | else |
314 | host_video_update_pal16(mmsp2.mlcpalette); |
315 | mmsp2.v.dirty_pal = 0; |
6720e4e4 |
316 | } |
317 | |
6ca08393 |
318 | if (bpp != old_bpp) { |
319 | host_video_change_bpp(bpp); |
320 | old_bpp = bpp; |
321 | } |
322 | |
6720e4e4 |
323 | switch (bpp) { |
324 | case 4: |
7000b522 |
325 | host_video_blit4(src, 320, 240, stride); |
6720e4e4 |
326 | break; |
327 | |
328 | case 8: |
7000b522 |
329 | host_video_blit8(src, 320, 240, stride); |
6720e4e4 |
330 | break; |
331 | |
332 | case 16: |
7000b522 |
333 | host_video_blit16(src, 320, 240, stride); |
6720e4e4 |
334 | break; |
335 | |
336 | case 24: |
337 | // TODO |
338 | break; |
339 | } |
6720e4e4 |
340 | } |
341 | |
c1ffd5ba |
342 | static void *fb_sync_thread(void *arg) |
343 | { |
d0b9b0df |
344 | unsigned long sigmask[2] = { ~0ul, ~0ul }; |
345 | struct timespec ts = { 0, 0 }; |
c1ffd5ba |
346 | int invalid_fb_addr = 1; |
347 | int manual_refresh = 0; |
7000b522 |
348 | int frame_counter = 0; |
d0b9b0df |
349 | int wait_ret; |
350 | |
351 | // this thread can't run any signal handlers since the |
352 | // app's stack/tls stuff will never be set up here |
353 | sigmask[0] &= ~(1ul << (SIGSEGV - 1)); |
354 | g_rt_sigprocmask_raw(SIG_SETMASK, sigmask, NULL, sizeof(sigmask)); |
c1ffd5ba |
355 | |
c1ffd5ba |
356 | //ret = setpriority(PRIO_PROCESS, 0, -1); |
357 | //log("setpriority %d\n", ret); |
358 | |
d0b9b0df |
359 | // tell the main thread we're done init |
360 | fb_sync_thread_futex = 0; |
361 | g_futex_raw(&fb_sync_thread_futex, FUTEX_WAKE, 1, NULL); |
c1ffd5ba |
362 | |
363 | while (1) { |
364 | u8 *gp2x_fb, *gp2x_fb_end; |
c1ffd5ba |
365 | |
d0b9b0df |
366 | wait_ret = g_futex_raw(&fb_sync_thread_futex, FUTEX_WAIT, 0, &ts); |
dc90c02d |
367 | |
d0b9b0df |
368 | // this is supposed to be done atomically, but to make life |
369 | // easier ignore it for now, race impact is low anyway |
370 | fb_sync_thread_futex = 0; |
371 | |
372 | if (wait_ret != 0 && wait_ret != -EWOULDBLOCK |
373 | && wait_ret != -ETIMEDOUT) |
374 | { |
375 | err("fb_thread: futex error: %d\n", wait_ret); |
b4f4cb40 |
376 | sleep(1); |
7000b522 |
377 | goto check_keys; |
c1ffd5ba |
378 | } |
db9191ed |
379 | if (fb_sync_thread_paused) { |
d0b9b0df |
380 | ts.tv_nsec = 100000000; |
7000b522 |
381 | goto check_keys; |
db9191ed |
382 | } |
c1ffd5ba |
383 | |
d0b9b0df |
384 | if (wait_ret == 0) { |
385 | ts.tv_nsec = 50000000; |
c1ffd5ba |
386 | manual_refresh++; |
387 | if (manual_refresh == 2) |
4d045184 |
388 | dbg("fb_thread: switch to manual refresh\n"); |
c1ffd5ba |
389 | } else { |
d0b9b0df |
390 | ts.tv_nsec = 16666667; |
c1ffd5ba |
391 | if (manual_refresh > 1) |
4d045184 |
392 | dbg("fb_thread: switch to auto refresh\n"); |
c1ffd5ba |
393 | manual_refresh = 0; |
394 | } |
395 | |
c1ffd5ba |
396 | gp2x_fb = uppermem_lookup(mmsp2.mlc_stl_adr, &gp2x_fb_end); |
7000b522 |
397 | if (gp2x_fb == NULL || gp2x_fb + 320*240 * mmsp2.v.bpp / 8 > gp2x_fb_end) { |
c1ffd5ba |
398 | if (!invalid_fb_addr) { |
399 | err("fb_thread: %08x is out of range\n", mmsp2.mlc_stl_adr); |
400 | invalid_fb_addr = 1; |
401 | } |
402 | continue; |
403 | } |
404 | |
7000b522 |
405 | invalid_fb_addr = 0; |
406 | mlc_flip(gp2x_fb, mmsp2.v.bpp, mmsp2.v.stride); |
407 | |
408 | frame_counter++; |
409 | if (frame_counter & 0x0f) |
410 | continue; |
411 | |
412 | check_keys: |
413 | // this is to check for kill key, in case main thread hung |
414 | // or something else went wrong. |
415 | pollux.btn_state = host_read_btns(); |
c1ffd5ba |
416 | } |
417 | } |
418 | |
db9191ed |
419 | static void fb_thread_pause(void) |
420 | { |
421 | fb_sync_thread_paused = 1; |
422 | // wait until it finishes last refresh |
423 | // that it might be doing now |
424 | usleep(10000); |
425 | } |
426 | |
427 | static void fb_thread_resume(void) |
428 | { |
429 | fb_sync_thread_paused = 0; |
430 | } |
431 | |
7000b522 |
432 | static u32 xread32_io_cmn(u32 a, u32 *handled) |
433 | { |
26d2801c |
434 | struct timespec ts; |
7000b522 |
435 | u32 d = 0; |
436 | |
437 | *handled = 1; |
438 | switch (a) { |
439 | // Wiz stuff |
26d2801c |
440 | case 0x1980: // TIMER3 TMRCOUNT |
441 | // assume the timer is set up for microsec time |
442 | g_clock_gettime_raw(CLOCK_REALTIME, &ts); |
443 | d = ts.tv_sec * 1000000 + ((u64)(u32)ts.tv_nsec * 4294968 >> 32); |
444 | break; |
7000b522 |
445 | case 0x402c: // MLCVSTRIDE0 |
446 | case 0x4060: // MLCVSTRIDE1 |
447 | d = pollux.v.stride; |
448 | break; |
449 | case 0x4038: // MLCADDRESS0 |
450 | case 0x406c: // MLCADDRESS1 |
451 | d = pollux.mlc_stl_adr; |
452 | break; |
453 | // wiz_lib reads: |
454 | // ???? ???? YXBA DURiLe ???? VdVuMS LR?? ???? |
455 | // | GPIOC[31:16] | GPIOB[31:16] | |
456 | case 0xa058: // GPIOBPAD |
830ba1bf |
457 | d = (pollux.btn_state >> 1) & 0x0100; |
458 | d |= (pollux.btn_state << 1) & 0x0200; |
7000b522 |
459 | d |= (pollux.btn_state >> 3) & 0x0080; |
460 | d |= (pollux.btn_state >> 5) & 0x0040; |
461 | d |= (pollux.btn_state >> 6) & 0x0c00; |
462 | d <<= 16; |
463 | d = ~d; |
464 | break; |
465 | case 0xa098: // GPIOCPAD |
466 | pollux.btn_state = host_read_btns(); |
467 | d = (pollux.btn_state >> 8) & 0x00f0; |
468 | d |= (pollux.btn_state >> 1) & 0x0008; |
469 | d |= (pollux.btn_state << 2) & 0x0004; |
470 | d |= (pollux.btn_state >> 5) & 0x0002; |
471 | d |= (pollux.btn_state >> 2) & 0x0001; |
472 | d <<= 16; |
473 | d = ~d; |
474 | break; |
475 | default: |
476 | *handled = 0; |
477 | break; |
478 | } |
479 | |
480 | return d; |
481 | } |
482 | |
3d295a9f |
483 | static u32 xread8(u32 a) |
484 | { |
6720e4e4 |
485 | iolog("r8 ", a, 0, 8); |
486 | iolog_unh("r8 ", a, 0, 8); |
3d295a9f |
487 | return 0; |
11913091 |
488 | } |
489 | |
490 | static u32 xread16(u32 a) |
491 | { |
6720e4e4 |
492 | static u32 fudge, old_a; |
493 | u32 d = 0, t; |
494 | |
495 | if ((a & 0xffff0000) == 0x7f000000) { |
496 | u32 a_ = a & 0xffff; |
497 | switch (a_) { |
498 | case 0x0910: // FPLL |
499 | case 0x0912: |
500 | d = 0x9407; |
501 | break; |
502 | // minilib reads as: |
7000b522 |
503 | // 0000 P000 VuVd00 0000 YXBA RLSeSt 0Ri0D 0Le0U |
504 | // | GPIOD |GPIOC[8:15]|GPIOM[0:7] | |
6720e4e4 |
505 | // /dev/GPIO: |
506 | // ... 0PVdVu ... |
507 | case 0x1184: // GPIOC |
508 | d = ~mmsp2.btn_state & 0xff00; |
509 | d |= 0x00ff; |
510 | break; |
511 | case 0x1186: // GPIOD |
512 | t = ~mmsp2.btn_state; |
513 | d = (t >> 9) & 0x0080; |
514 | d |= (t >> 11) & 0x0040; |
515 | d |= (t >> 7) & 0x0800; |
516 | d |= 0x373b; |
517 | break; |
518 | case 0x1198: // GPIOM |
519 | mmsp2.btn_state = host_read_btns(); |
520 | d = ~mmsp2.btn_state & 0xff; |
521 | d |= 0x01aa; |
522 | break; |
c1ffd5ba |
523 | case 0x1836: // reserved |
524 | d = 0x2330; |
525 | break; |
526 | case 0x2816: // DPC_X_MAX |
527 | d = 319; |
528 | break; |
529 | case 0x2818: // DPC_Y_MAX |
530 | d = 239; |
531 | break; |
6720e4e4 |
532 | case 0x28da: |
533 | d = mmsp2.mlc_stl_cntl; |
534 | break; |
c1ffd5ba |
535 | case 0x290e: |
536 | case 0x2912: |
537 | d = mmsp2.mlc_stl_adrl; |
538 | break; |
539 | case 0x2910: |
540 | case 0x2914: |
541 | d = mmsp2.mlc_stl_adrh; |
542 | break; |
6720e4e4 |
543 | case 0x2958: |
544 | d = mmsp2.mlc_stl_pallt_a; |
545 | break; |
7000b522 |
546 | |
6720e4e4 |
547 | default: |
7000b522 |
548 | d = xread32_io_cmn(a_, &t); |
549 | if (!t) |
550 | goto unk; |
551 | if (!(a_ & 2)) |
552 | d >>= 16; |
553 | break; |
6720e4e4 |
554 | } |
555 | goto out; |
556 | } |
557 | |
7000b522 |
558 | unk: |
6720e4e4 |
559 | if (a == old_a) { |
560 | d = fudge; |
561 | fudge = ~fudge; |
562 | } |
563 | old_a = a; |
564 | iolog_unh("r16", a, d & 0xffff, 16); |
565 | |
566 | out: |
567 | d &= 0xffff; |
568 | iolog("r16", a, d, 16); |
569 | return d; |
11913091 |
570 | } |
571 | |
572 | static u32 xread32(u32 a) |
573 | { |
3d295a9f |
574 | u32 d = 0; |
dc90c02d |
575 | if ((a & 0xfff00000) == 0x7f000000) { |
576 | u32 a_ = a & 0xffff; |
3d3fa63b |
577 | struct timespec ts; |
578 | u64 t64; |
7000b522 |
579 | u32 t; |
3d3fa63b |
580 | |
dc90c02d |
581 | switch (a_) { |
582 | case 0x0a00: // TCOUNT, 1/7372800s |
d0b9b0df |
583 | g_clock_gettime_raw(CLOCK_REALTIME, &ts); |
3d3fa63b |
584 | t64 = (u64)ts.tv_sec * 1000000000 + ts.tv_nsec; |
585 | // t * 7372800.0 / 1000000000 * 0x100000000 ~= t * 31665935 |
586 | t64 *= 31665935; |
587 | d = t64 >> 32; |
dc90c02d |
588 | break; |
7000b522 |
589 | |
590 | default: |
591 | d = xread32_io_cmn(a_, &t); |
592 | if (!t) |
593 | goto unh; |
594 | break; |
dc90c02d |
595 | } |
7000b522 |
596 | goto out; |
dc90c02d |
597 | } |
3d295a9f |
598 | if ((a & 0xfff00000) == 0x7f100000) { |
599 | u32 *bl = &blitter.dstctrl; |
6720e4e4 |
600 | u32 a_ = a & 0xfff; |
601 | if (a_ < 0x40) { |
602 | d = bl[a_ / 4]; |
603 | if (a_ == 0x34) |
604 | d = 0; // not busy |
605 | goto out; |
606 | } |
3d295a9f |
607 | } |
7000b522 |
608 | |
609 | unh: |
6720e4e4 |
610 | iolog_unh("r32", a, d, 32); |
611 | |
612 | out: |
613 | iolog("r32", a, d, 32); |
3d295a9f |
614 | return d; |
11913091 |
615 | } |
616 | |
617 | static void xwrite8(u32 a, u32 d) |
618 | { |
6720e4e4 |
619 | iolog("w8 ", a, d, 8); |
620 | iolog_unh("w8 ", a, d, 8); |
11913091 |
621 | } |
622 | |
623 | static void xwrite16(u32 a, u32 d) |
624 | { |
6720e4e4 |
625 | iolog("w16", a, d, 16); |
3d295a9f |
626 | if ((a & 0xfff00000) == 0x7f000000) { |
6720e4e4 |
627 | u32 a_ = a & 0xffff; |
628 | switch (a_) { |
7000b522 |
629 | case 0x28da: { |
630 | int mode; |
631 | mmsp2.mlc_stl_cntl = d | 0xaa; |
632 | mode = (d >> 9) & 3; |
633 | mmsp2.v.bpp = mode ? mode * 8 : 4; |
634 | break; |
635 | } |
636 | case 0x290c: |
637 | mmsp2.v.stride = d; |
638 | return; |
639 | case 0x290e: |
640 | case 0x2910: |
641 | // odd addresses don't affect LCD. What about TV? |
642 | return; |
643 | case 0x2912: |
644 | mmsp2.mlc_stl_adrl = d; |
645 | return; |
646 | case 0x2914: |
647 | mmsp2.mlc_stl_adrh = d; |
d0b9b0df |
648 | if (mmsp2.mlc_stl_adr != mmsp2.old_mlc_stl_adr) { |
7000b522 |
649 | // ask for refresh |
d0b9b0df |
650 | fb_sync_thread_futex = 1; |
651 | g_futex_raw(&fb_sync_thread_futex, FUTEX_WAKE, 1, NULL); |
652 | } |
7000b522 |
653 | mmsp2.old_mlc_stl_adr = mmsp2.mlc_stl_adr; |
654 | return; |
f01759de |
655 | case 0x2958: // MLC_STL_PALLT_A |
7000b522 |
656 | mmsp2.mlc_stl_pallt_a = d & 0x1ff; |
657 | return; |
f01759de |
658 | case 0x295a: // MLC_STL_PALLT_D |
7000b522 |
659 | mmsp2.mlc_stl_pallt_d[mmsp2.mlc_stl_pallt_a++] = d; |
660 | mmsp2.mlc_stl_pallt_a &= 0x1ff; |
661 | mmsp2.v.dirty_pal = DIRTY_PAL_MMSP2; |
662 | return; |
3d295a9f |
663 | } |
3d295a9f |
664 | } |
6720e4e4 |
665 | iolog_unh("w16", a, d, 16); |
11913091 |
666 | } |
667 | |
668 | static void xwrite32(u32 a, u32 d) |
669 | { |
6720e4e4 |
670 | iolog("w32", a, d, 32); |
671 | |
7000b522 |
672 | if ((a & 0xfff00000) == 0x7f000000) { |
673 | u32 a_ = a & 0xffff; |
674 | switch (a_) { |
f01759de |
675 | // GP2X |
676 | case 0x295a: // MLC_STL_PALLT_D |
677 | // special unaligned 32bit write, allegro seems to rely on it |
678 | mmsp2.mlc_stl_pallt_d[mmsp2.mlc_stl_pallt_a++ & 0x1ff] = d; |
679 | mmsp2.mlc_stl_pallt_d[mmsp2.mlc_stl_pallt_a++ & 0x1ff] = d >> 16; |
680 | mmsp2.mlc_stl_pallt_a &= 0x1ff; |
681 | mmsp2.v.dirty_pal = DIRTY_PAL_MMSP2; |
682 | return; |
7000b522 |
683 | // Wiz |
684 | case 0x4024: // MLCCONTROL0 |
685 | case 0x4058: // MLCCONTROL1 |
686 | pollux.mlccontrol = d; |
687 | if (!(d & 0x20)) |
688 | return; // layer not enabled |
689 | if ((d >> 16) == 0x443A) |
690 | pollux.v.bpp = 8; |
691 | else |
692 | pollux.v.bpp = 16; |
693 | return; |
694 | case 0x402c: // MLCVSTRIDE0 |
695 | case 0x4060: // MLCVSTRIDE1 |
696 | pollux.v.stride = d; |
697 | return; |
698 | case 0x4038: // MLCADDRESS0 |
699 | case 0x406c: // MLCADDRESS1 |
700 | pollux.mlc_stl_adr = d; |
d0b9b0df |
701 | if (d != mmsp2.old_mlc_stl_adr) { |
7000b522 |
702 | // ask for refresh |
d0b9b0df |
703 | fb_sync_thread_futex = 1; |
704 | g_futex_raw(&fb_sync_thread_futex, FUTEX_WAKE, 1, NULL); |
705 | } |
7000b522 |
706 | mmsp2.old_mlc_stl_adr = d; |
707 | return; |
708 | case 0x403c: // MLCPALETTE0 |
709 | case 0x4070: // MLCPALETTE1 |
710 | pollux.mlcpalette[d >> 24] = d; |
711 | pollux.v.dirty_pal = DIRTY_PAL_POLLUX; |
712 | return; |
713 | } |
714 | } |
3d295a9f |
715 | if ((a & 0xfff00000) == 0x7f100000) { |
716 | u32 *bl = &blitter.dstctrl; |
6720e4e4 |
717 | u32 a_ = a & 0xfff; |
718 | if (a_ < 0x40) { |
719 | bl[a_ / 4] = d; |
720 | if (a_ == 0x34 && (d & 1)) |
721 | blitter_do(); |
722 | return; |
723 | } |
3d295a9f |
724 | } |
6720e4e4 |
725 | iolog_unh("w32", a, d, 32); |
11913091 |
726 | } |
727 | |
6720e4e4 |
728 | #define LINKPAGE_SIZE 0x1000 |
729 | #define LINKPAGE_COUNT 4 |
730 | #define LINKPAGE_ALLOC (LINKPAGE_SIZE * LINKPAGE_COUNT) |
731 | |
732 | struct op_context { |
733 | u32 pc; |
734 | u32 op; |
735 | u32 code[0]; |
736 | }; |
737 | |
3d3fa63b |
738 | struct op_linkpage { |
890c1dc5 |
739 | u32 *code_ptr; |
6720e4e4 |
740 | void (*handler)(struct op_context *op_ctx); |
741 | u32 code[0]; |
742 | }; |
743 | |
3d3fa63b |
744 | struct op_stackframe { |
745 | u32 saved_regs[15]; |
746 | u32 cpsr; |
747 | }; |
748 | |
890c1dc5 |
749 | static struct op_linkpage *g_linkpages[2]; |
6720e4e4 |
750 | static int g_linkpage_count; |
751 | |
10c900a1 |
752 | enum opcond { |
753 | C_EQ, C_NE, C_CS, C_CC, C_MI, C_PL, C_VS, C_VC, |
754 | C_HI, C_LS, C_GE, C_LT, C_GT, C_LE, C_AL, |
755 | }; |
756 | enum cpsr_cond { |
757 | CPSR_N = (1u << 31), |
758 | CPSR_Z = (1u << 30), |
759 | CPSR_C = (1u << 29), |
760 | CPSR_V = (1u << 28), |
761 | }; |
762 | |
11913091 |
763 | #define BIT_SET(v, b) (v & (1 << (b))) |
764 | |
3d3fa63b |
765 | void emu_handle_op(struct op_context *op_ctx, struct op_stackframe *sframe) |
11913091 |
766 | { |
3d3fa63b |
767 | u32 *regs = sframe->saved_regs; |
10c900a1 |
768 | u32 cpsr = sframe->cpsr; |
6720e4e4 |
769 | u32 op = op_ctx->op; |
11913091 |
770 | u32 t, shift, ret, addr; |
10c900a1 |
771 | int i, rn, rd, cond; |
11913091 |
772 | |
fea1465c |
773 | cond = (op & 0xf0000000) >> 28; |
11913091 |
774 | rd = (op & 0x0000f000) >> 12; |
775 | rn = (op & 0x000f0000) >> 16; |
776 | |
10c900a1 |
777 | if (cond != 0x0e) { |
778 | switch (cond) { |
779 | case C_EQ: if ( (cpsr & CPSR_Z)) break; return; |
780 | case C_NE: if (!(cpsr & CPSR_Z)) break; return; |
781 | case C_CS: if ( (cpsr & CPSR_C)) break; return; |
782 | case C_CC: if (!(cpsr & CPSR_C)) break; return; |
783 | case C_MI: if ( (cpsr & CPSR_N)) break; return; |
784 | case C_PL: if (!(cpsr & CPSR_N)) break; return; |
785 | case C_VS: if ( (cpsr & CPSR_V)) break; return; |
786 | case C_VC: if (!(cpsr & CPSR_V)) break; return; |
787 | default: |
788 | goto unhandled; |
789 | } |
790 | } |
fea1465c |
791 | |
11913091 |
792 | if ((op & 0x0f200090) == 0x01000090) { // AM3: LDRH, STRH |
86418a84 |
793 | if (!BIT_SET(op, 5)) // !H |
794 | goto unhandled; |
795 | if (BIT_SET(op, 6) && !BIT_SET(op, 20)) // S && !L |
11913091 |
796 | goto unhandled; |
797 | |
798 | if (BIT_SET(op, 22)) // imm offset |
799 | t = ((op & 0xf00) >> 4) | (op & 0x0f); |
800 | else // reg offset |
801 | t = regs[op & 0x000f]; |
802 | |
803 | if (!BIT_SET(op, 23)) |
804 | t = -t; |
805 | addr = regs[rn] + t; |
806 | |
807 | if (BIT_SET(op, 20)) { // Load |
808 | ret = xread16(addr); |
86418a84 |
809 | if (BIT_SET(op, 6)) { // S |
810 | ret <<= 16; |
811 | ret = (signed int)ret >> 16; |
812 | } |
11913091 |
813 | regs[rd] = ret; |
814 | } |
815 | else |
816 | xwrite16(addr, regs[rd]); |
817 | } |
fea1465c |
818 | else if ((op & 0x0c000000) == 0x04000000) { // load/store word/byte |
819 | if (BIT_SET(op, 21)) |
820 | goto unhandled; // unprivileged |
11913091 |
821 | if (BIT_SET(op, 25)) { // reg offs |
822 | if (BIT_SET(op, 4)) |
fea1465c |
823 | goto unhandled; // nah it's media |
11913091 |
824 | |
825 | t = regs[op & 0x000f]; |
826 | shift = (op & 0x0f80) >> 7; |
827 | switch ((op & 0x0060) >> 5) { |
828 | case 0: t = t << shift; break; |
829 | case 1: t = t >> (shift + 1); break; |
830 | case 2: t = (signed int)t >> (shift + 1); break; |
831 | case 3: goto unhandled; // I'm just lazy |
832 | } |
833 | } |
834 | else // imm offs |
835 | t = op & 0x0fff; |
836 | |
837 | if (!BIT_SET(op, 23)) |
838 | t = -t; |
fea1465c |
839 | |
840 | addr = regs[rn]; |
841 | if (BIT_SET(op, 24)) // pre-indexed |
842 | addr += t; |
843 | if (!BIT_SET(op, 24) || BIT_SET(op, 21)) |
844 | regs[rn] += t; // writeback |
11913091 |
845 | |
846 | if (BIT_SET(op, 20)) { // Load |
847 | if (BIT_SET(op, 22)) // Byte |
848 | ret = xread8(addr); |
849 | else |
850 | ret = xread32(addr); |
851 | regs[rd] = ret; |
852 | } |
853 | else { |
854 | if (BIT_SET(op, 22)) // Byte |
855 | xwrite8(addr, regs[rd]); |
856 | else |
857 | xwrite32(addr, regs[rd]); |
858 | } |
859 | } |
860 | else |
861 | goto unhandled; |
862 | |
86418a84 |
863 | #if 0 |
11913091 |
864 | if (addr != addr_check) { |
865 | fprintf(stderr, "bad calculated addr: %08x vs %08x\n", addr, addr_check); |
866 | abort(); |
867 | } |
86418a84 |
868 | #endif |
11913091 |
869 | return; |
870 | |
871 | unhandled: |
6720e4e4 |
872 | err("unhandled IO op %08x @ %08x\n", op, op_ctx->pc); |
10c900a1 |
873 | for (i = 0; i < 8-1; i++) |
874 | err(" r%d=%08x r%-2d=%08x\n", i, regs[i], i+8, regs[i+8]); |
875 | err(" r%d=%08x cpsr=%08x\n", i, regs[i], cpsr); |
fea1465c |
876 | abort(); |
86418a84 |
877 | } |
878 | |
879 | static u32 make_offset12(u32 *pc, u32 *target) |
880 | { |
881 | int lp_offs, u = 1; |
882 | |
883 | lp_offs = (char *)target - (char *)pc - 2*4; |
884 | if (lp_offs < 0) { |
885 | lp_offs = -lp_offs; |
886 | u = 0; |
887 | } |
888 | if (lp_offs >= LINKPAGE_SIZE) { |
6720e4e4 |
889 | err("linkpage too far: %d\n", lp_offs); |
86418a84 |
890 | abort(); |
891 | } |
892 | |
893 | return (u << 23) | lp_offs; |
894 | } |
895 | |
6720e4e4 |
896 | static u32 make_jmp(u32 *pc, u32 *target, int bl) |
86418a84 |
897 | { |
898 | int jmp_val; |
899 | |
900 | jmp_val = target - pc - 2; |
890c1dc5 |
901 | if (jmp_val < (int)0xff800000 || jmp_val > 0x007fffff) { |
6720e4e4 |
902 | err("jump out of range (%p -> %p)\n", pc, target); |
86418a84 |
903 | abort(); |
904 | } |
905 | |
6720e4e4 |
906 | return 0xea000000 | (bl << 24) | (jmp_val & 0x00ffffff); |
86418a84 |
907 | } |
908 | |
890c1dc5 |
909 | static void emit_op(struct op_linkpage *linkpage, u32 op) |
86418a84 |
910 | { |
890c1dc5 |
911 | *linkpage->code_ptr++ = op; |
86418a84 |
912 | } |
913 | |
890c1dc5 |
914 | static void emit_op_io(struct op_linkpage *linkpage, |
915 | u32 op, u32 *target) |
86418a84 |
916 | { |
890c1dc5 |
917 | op |= make_offset12(linkpage->code_ptr, target); |
918 | emit_op(linkpage, op); |
86418a84 |
919 | } |
920 | |
890c1dc5 |
921 | static void init_linkpage(struct op_linkpage *linkpage) |
6720e4e4 |
922 | { |
890c1dc5 |
923 | linkpage->handler = emu_call_handle_op; |
924 | linkpage->code_ptr = linkpage->code; |
6720e4e4 |
925 | } |
926 | |
86418a84 |
927 | static void segv_sigaction(int num, siginfo_t *info, void *ctx) |
928 | { |
6c888740 |
929 | extern char _init, _end; |
86418a84 |
930 | struct ucontext *context = ctx; |
931 | u32 *regs = (u32 *)&context->uc_mcontext.arm_r0; |
932 | u32 *pc = (u32 *)regs[15]; |
6c888740 |
933 | u32 self_start, self_end; |
890c1dc5 |
934 | struct op_linkpage *lp = NULL; |
6720e4e4 |
935 | struct op_context *op_ctx; |
890c1dc5 |
936 | int i, ret, lp_i, lp_size; |
86418a84 |
937 | |
6c888740 |
938 | self_start = (u32)&_init & ~0xfff; |
939 | self_end = (u32)&_end; |
940 | |
890c1dc5 |
941 | if ((self_start <= regs[15] && regs[15] <= self_end) || // PC is in our segment or |
942 | !((regs[15] ^ (u32)g_linkpages[0]) & ~(LINKPAGE_ALLOC - 1)) || // .. in linkpage |
943 | ((long)info->si_addr & 0xffe00000) != 0x7f000000) // faulting not where expected |
86418a84 |
944 | { |
945 | // real crash - time to die |
6720e4e4 |
946 | err("segv %d %p @ %08x\n", info->si_code, info->si_addr, regs[15]); |
7fd42181 |
947 | for (i = 0; i < 8; i++) |
10c900a1 |
948 | dbg(" r%d=%08x r%-2d=%08x\n", i, regs[i], i+8, regs[i+8]); |
86418a84 |
949 | signal(num, SIG_DFL); |
950 | raise(num); |
c1ffd5ba |
951 | return; |
86418a84 |
952 | } |
0881206b |
953 | segvlog("segv %d %p @ %08x\n", info->si_code, info->si_addr, regs[15]); |
86418a84 |
954 | |
890c1dc5 |
955 | // find nearby linkpage |
956 | for (lp_i = 0; lp_i < ARRAY_SIZE(g_linkpages); lp_i++) { |
957 | if (g_linkpages[lp_i] == NULL) |
958 | continue; |
959 | i = g_linkpages[lp_i]->code_ptr + 2 - pc - 2; |
960 | if ((int)0xff800000 <= i && i <= 0x007fffff) { |
961 | lp = g_linkpages[lp_i]; |
962 | break; |
963 | } |
964 | } |
965 | |
966 | if (lp == NULL) { |
967 | err("fatal: no nearby linkpage for %08x\n", regs[15]); |
968 | abort(); |
969 | } |
970 | |
971 | if (emu_is_dl) { |
972 | ret = mprotect((void *)((long)pc & ~0xfff), 0x1000, PROT_READ|PROT_WRITE|PROT_EXEC); |
973 | if (ret != 0) |
974 | perror("warning: mprotect"); |
975 | } |
976 | |
86418a84 |
977 | // spit PC and op |
890c1dc5 |
978 | op_ctx = (void *)lp->code_ptr; |
6720e4e4 |
979 | op_ctx->pc = (u32)pc; |
980 | op_ctx->op = *pc; |
890c1dc5 |
981 | lp->code_ptr = &op_ctx->code[0]; |
86418a84 |
982 | |
983 | // emit jump to code ptr |
890c1dc5 |
984 | *pc = make_jmp(pc, lp->code_ptr, 0); |
86418a84 |
985 | |
986 | // generate code: |
890c1dc5 |
987 | emit_op (lp, 0xe50d0000 + 0xf00 - 4 * 0); // str r0, [sp, #(-0xf00 + r0_offs)] |
988 | emit_op (lp, 0xe50de000 + 0xf00 - 4 * 14); // str lr, [sp, #(-0xf00 + lr_offs)] |
989 | emit_op (lp, 0xe24f0000 + (lp->code_ptr - (u32 *)op_ctx + 2) * 4); // sub r0, pc, #op_ctx |
990 | emit_op (lp, 0xe1a0e00f); // mov lr, pc |
991 | emit_op_io(lp, 0xe51ff000, (u32 *)&lp->handler); // ldr pc, =handle_op |
992 | emit_op (lp, 0xe51de000 + 0xf00 - 4 * 14); // ldr lr, [sp, #(-0xf00 + lr_offs)] |
993 | emit_op (lp, make_jmp(lp->code_ptr, pc + 1, 0)); // jmp <back> |
86418a84 |
994 | |
995 | // sync caches |
996 | sys_cacheflush(pc, pc + 1); |
890c1dc5 |
997 | sys_cacheflush(lp, lp->code_ptr); |
86418a84 |
998 | |
890c1dc5 |
999 | lp_size = (char *)lp->code_ptr - (char *)lp; |
0881206b |
1000 | segvlog("code #%d %d/%d\n", g_linkpage_count, lp_size, LINKPAGE_SIZE); |
86418a84 |
1001 | |
890c1dc5 |
1002 | if (lp_size + 14*4 > LINKPAGE_SIZE) { |
86418a84 |
1003 | g_linkpage_count++; |
1004 | if (g_linkpage_count >= LINKPAGE_COUNT) { |
6720e4e4 |
1005 | err("too many linkpages needed\n"); |
86418a84 |
1006 | abort(); |
1007 | } |
890c1dc5 |
1008 | g_linkpages[lp_i] = (void *)((char *)g_linkpages[lp_i] + LINKPAGE_SIZE); |
1009 | init_linkpage(g_linkpages[lp_i]); |
86418a84 |
1010 | } |
1011 | //handle_op(regs[15], op, regs, (u32)info->si_addr); |
1012 | //regs[15] += 4; |
1013 | } |
11913091 |
1014 | |
890c1dc5 |
1015 | void emu_init(void *map_bottom[2], int is_dl) |
11913091 |
1016 | { |
7fd42181 |
1017 | sigaction_t segv_action = { |
11913091 |
1018 | .sa_sigaction = segv_sigaction, |
1019 | .sa_flags = SA_SIGINFO, |
1020 | }; |
7510900a |
1021 | const char *var; |
6720e4e4 |
1022 | void *pret; |
890c1dc5 |
1023 | int i, ret; |
11913091 |
1024 | |
830ba1bf |
1025 | #ifdef PND |
1026 | if (geteuid() == 0) { |
b4f4cb40 |
1027 | err("don't try to run as root, device registers or memory " |
1028 | "might get trashed crashing the OS or even damaging the device.\n"); |
830ba1bf |
1029 | exit(1); |
1030 | } |
1031 | #endif |
1032 | |
890c1dc5 |
1033 | emu_is_dl = is_dl; |
1034 | |
7510900a |
1035 | #ifdef PND |
1036 | // set default buffer size to 8 * 1K |
1037 | emu_force_snd_frag = (8<<16) | 10; |
1038 | #endif |
1039 | var = getenv("GINGE_SETFRAGMENT"); |
1040 | if (var != NULL) |
1041 | emu_force_snd_frag = strtol(var, NULL, 0); |
1042 | |
890c1dc5 |
1043 | for (i = 0; i < 2; i++) { |
1044 | if (map_bottom[i] == NULL) |
1045 | continue; |
1046 | g_linkpages[i] = (void *)(((u32)map_bottom[i] - LINKPAGE_ALLOC) & ~0xfff); |
1047 | pret = mmap(g_linkpages[i], LINKPAGE_ALLOC, PROT_READ|PROT_WRITE, |
1048 | MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED, -1, 0); |
1049 | if (pret != g_linkpages[i]) { |
1050 | err("linkpage alloc @ %p: ", g_linkpages[i]); |
1051 | perror(NULL); |
1052 | exit(1); |
1053 | } |
1054 | log("linkpages @ %p\n", g_linkpages[i]); |
1055 | init_linkpage(g_linkpages[i]); |
11913091 |
1056 | } |
11913091 |
1057 | |
4d045184 |
1058 | // host stuff |
1059 | ret = host_init(); |
1060 | if (ret != 0) { |
1061 | err("can't init host\n"); |
3d3fa63b |
1062 | exit(1); |
1063 | } |
1064 | |
4d045184 |
1065 | ret = host_video_init(NULL, 0); |
2ce69bdf |
1066 | if (ret != 0) { |
4d045184 |
1067 | err("can't init host video\n"); |
1068 | exit(1); |
1069 | } |
1070 | |
5853ddbd |
1071 | // TODO: check if this really fails on Wiz.. |
4d045184 |
1072 | mmsp2.umem = mmap(NULL, 0x2000000, PROT_READ|PROT_WRITE|PROT_EXEC, |
1073 | MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); |
5853ddbd |
1074 | #ifdef WIZ |
1075 | if (mmsp2.umem == MAP_FAILED) { |
1076 | // we are short on memmory on Wiz, need special handling |
1077 | extern void *host_mmap_upper(void); |
1078 | mmsp2.umem = host_mmap_upper(); |
1079 | } |
4d045184 |
1080 | #endif |
1081 | if (mmsp2.umem == MAP_FAILED) { |
1082 | perror(PFX "mmap upper mem"); |
3d295a9f |
1083 | exit(1); |
1084 | } |
c1ffd5ba |
1085 | |
d0b9b0df |
1086 | pret = mmap(NULL, THREAD_STACK_SIZE, PROT_READ|PROT_WRITE|PROT_EXEC, |
1087 | MAP_PRIVATE|MAP_ANONYMOUS|MAP_GROWSDOWN, -1, 0); |
1088 | if (mmsp2.umem == MAP_FAILED) { |
1089 | perror(PFX "mmap thread stack"); |
1090 | exit(1); |
1091 | } |
1092 | fb_sync_thread_futex = 1; |
1093 | ret = g_clone(CLONE_VM | CLONE_FS | CLONE_FILES |
1094 | | CLONE_SIGHAND | CLONE_THREAD, |
1095 | (char *)pret + THREAD_STACK_SIZE, 0, 0, 0, |
1096 | fb_sync_thread); |
1097 | if (ret == 0 || ret == -1) { |
1098 | perror(PFX "start fb thread"); |
c1ffd5ba |
1099 | exit(1); |
1100 | } |
d0b9b0df |
1101 | g_futex_raw(&fb_sync_thread_futex, FUTEX_WAIT, 1, NULL); |
c1ffd5ba |
1102 | |
7000b522 |
1103 | // defaults |
c1ffd5ba |
1104 | mmsp2.mlc_stl_adr = 0x03101000; // fb2 is at 0x03381000 |
7fd42181 |
1105 | mmsp2.mlc_stl_cntl = 0x4ab; // 16bpp, region 1 active |
7000b522 |
1106 | mmsp2.v.width = 320; |
1107 | mmsp2.v.height = 240; |
1108 | mmsp2.v.stride = 320*2; |
1109 | mmsp2.v.bpp = 16; |
1110 | mmsp2.v.dirty_pal = 1; |
c1ffd5ba |
1111 | |
1112 | sigemptyset(&segv_action.sa_mask); |
1113 | sigaction(SIGSEGV, &segv_action, NULL); |
3d295a9f |
1114 | } |
1115 | |
b4f4cb40 |
1116 | static long emu_mmap_dev(unsigned int length, int prot, int flags, unsigned int offset) |
11913091 |
1117 | { |
3d3fa63b |
1118 | u8 *umem, *umem_end; |
11913091 |
1119 | |
3d295a9f |
1120 | // SoC regs |
7000b522 |
1121 | if ((offset & ~0x1ffff) == 0xc0000000) { |
b4f4cb40 |
1122 | return g_mmap2_raw((void *)0x7f000000, length, PROT_NONE, |
11913091 |
1123 | MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED|MAP_NORESERVE, -1, 0); |
1124 | } |
7000b522 |
1125 | // MMSP2 blitter |
11913091 |
1126 | if ((offset & ~0xffff) == 0xe0020000) { |
b4f4cb40 |
1127 | return g_mmap2_raw((void *)0x7f100000, length, PROT_NONE, |
11913091 |
1128 | MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED|MAP_NORESERVE, -1, 0); |
1129 | } |
3d295a9f |
1130 | // upper mem |
3d3fa63b |
1131 | if ((offset & 0xfe000000) != 0x02000000) { |
6720e4e4 |
1132 | err("unexpected devmem mmap @ %08x\n", offset); |
b4f4cb40 |
1133 | return -EINVAL; |
3d295a9f |
1134 | } |
1135 | |
3d3fa63b |
1136 | umem = uppermem_lookup(offset, &umem_end); |
1137 | if (umem + length > umem_end) |
1138 | err("warning: uppermem @ %08x overflows by %d bytes\n", |
1139 | offset, umem + length - umem_end); |
1140 | |
3ef07128 |
1141 | dbg("upper mem @ %08x %x = %p\n", offset, length, umem); |
b4f4cb40 |
1142 | return (long)umem; |
11913091 |
1143 | } |
1144 | |
b4f4cb40 |
1145 | long emu_do_mmap(unsigned int length, int prot, int flags, int fd, |
1146 | unsigned int offset) |
dc90c02d |
1147 | { |
1148 | if (fd == FAKEDEV_MEM) |
1149 | return emu_mmap_dev(length, prot, flags, offset); |
1150 | |
1151 | if (fd == FAKEDEV_FB0) |
1152 | return emu_mmap_dev(length, prot, flags, offset + 0x03101000); |
1153 | |
1154 | if (fd == FAKEDEV_FB1) |
1155 | return emu_mmap_dev(length, prot, flags, offset + 0x03381000); |
1156 | |
7fd42181 |
1157 | err("bad/ni mmap(?, %d, %x, %x, %d, %08x)\n", length, prot, flags, fd, offset); |
b4f4cb40 |
1158 | return -EINVAL; |
dc90c02d |
1159 | } |
1160 | |
b4f4cb40 |
1161 | long emu_do_munmap(void *addr, unsigned int length) |
3ef07128 |
1162 | { |
1163 | u8 *p = addr; |
1164 | |
1165 | // don't allow to unmap upper mem |
1166 | if ((u8 *)mmsp2.umem <= p && p < (u8 *)mmsp2.umem + 0x2000000) { |
1167 | dbg("ignoring munmap: %p %x\n", addr, length); |
1168 | return 0; |
1169 | } |
1170 | |
1171 | return -EAGAIN; |
1172 | } |
1173 | |
7000b522 |
1174 | static void emu_sound_open(int fd) |
1175 | { |
7510900a |
1176 | int ret; |
7000b522 |
1177 | |
7510900a |
1178 | if (emu_force_snd_frag != 0) { |
1179 | ret = g_ioctl_raw(fd, SNDCTL_DSP_SETFRAGMENT, &emu_force_snd_frag); |
1180 | if (ret != 0) |
1181 | err("snd ioctl SETFRAGMENT %08x: %d\n", emu_force_snd_frag, ret); |
1182 | } |
7000b522 |
1183 | } |
1184 | |
b4f4cb40 |
1185 | static long emu_sound_ioctl(int fd, int request, void *argp) |
dc90c02d |
1186 | { |
1187 | int *arg = argp; |
1188 | |
1189 | #if 0 |
1190 | dbg("snd ioctl(%d, %08x, %p)", fd, request, argp); |
1191 | if (arg != NULL) |
1192 | dbg_c(" [%d]", *arg); |
1193 | dbg_c("\n"); |
1194 | #endif |
1195 | |
1196 | /* People set strange frag settings on GP2X, which even manage |
1197 | * to break audio on pandora (causes writes to fail). |
1198 | * Catch this and set to something that works. */ |
7000b522 |
1199 | switch(request) { |
1200 | case SNDCTL_DSP_SETFRAGMENT: { |
b4f4cb40 |
1201 | int bsize, frag, frag_cnt; |
1202 | long ret; |
1203 | |
7000b522 |
1204 | if (arg == NULL) |
1205 | break; |
dc90c02d |
1206 | |
7000b522 |
1207 | frag = *arg & 0xffff; |
1208 | frag_cnt = *arg >> 16; |
1209 | bsize = frag_cnt << frag; |
7510900a |
1210 | if (frag < 8 || bsize < 4096*4 || bsize > 4096*4*2) { |
7000b522 |
1211 | /* |
1212 | * ~4ms. gpSP wants small buffers or else it stutters |
1213 | * because of it's audio thread sync stuff |
1214 | * XXX: hardcoding, as low samplerates will result in small fragment size, |
1215 | * which itself causes ALSA stall and hangs the program. |
1216 | * Also some apps change samplerate without reopening /dev/dsp, |
1217 | * which causes ALSA to reject SNDCTL_DSP_SETFRAGMENT. |
1218 | */ |
1219 | bsize = 44100 / 250 * 4; |
1220 | |
1221 | for (frag = 0; bsize; bsize >>= 1, frag++) |
1222 | ; |
1223 | |
7510900a |
1224 | frag_cnt = 8; |
7000b522 |
1225 | } |
dc90c02d |
1226 | |
7000b522 |
1227 | frag |= frag_cnt << 16; |
b4f4cb40 |
1228 | ret = g_ioctl_raw(fd, SNDCTL_DSP_SETFRAGMENT, &frag); |
1229 | if (ret != 0) |
1230 | err("snd ioctl SETFRAGMENT %08x: %ld\n", frag, ret); |
7000b522 |
1231 | // indicate success even if we fail (because of ALSA mostly), |
1232 | // things like MikMod will bail out otherwise. |
1233 | return 0; |
dc90c02d |
1234 | } |
7000b522 |
1235 | case SNDCTL_DSP_SYNC: |
1236 | // Franxis tends to use sync/write loops, bad idea under ALSA |
1237 | return 0; |
1238 | default: |
1239 | break; |
dc90c02d |
1240 | } |
dc90c02d |
1241 | |
b4f4cb40 |
1242 | return g_ioctl_raw(fd, request, argp); |
dc90c02d |
1243 | } |
1244 | |
b4f4cb40 |
1245 | long emu_do_ioctl(int fd, int request, void *argp) |
dc90c02d |
1246 | { |
1247 | if (fd == emu_interesting_fds[IFD_SOUND].fd) |
1248 | return emu_sound_ioctl(fd, request, argp); |
1249 | |
7fd42181 |
1250 | switch (fd) { |
1251 | /* *********************** */ |
1252 | case FAKEDEV_FB0: |
1253 | case FAKEDEV_FB1: |
1254 | if (argp == NULL) |
1255 | goto fail; |
dc90c02d |
1256 | |
dc90c02d |
1257 | switch (request) { |
1258 | case FBIOGET_FSCREENINFO: { |
1259 | struct fb_fix_screeninfo *fix = argp; |
1260 | |
1261 | memset(fix, 0, sizeof(*fix)); |
1262 | strcpy(fix->id, "mmsp2_RGB0"); |
1263 | fix->type = FB_TYPE_PACKED_PIXELS; |
1264 | fix->accel = FB_ACCEL_NONE; |
7fd42181 |
1265 | fix->visual = FB_VISUAL_TRUECOLOR; |
1266 | fix->line_length = 320*2; |
dc90c02d |
1267 | fix->smem_start = (fd == FAKEDEV_FB0) ? 0x03101000 : 0x03381000; |
1268 | fix->smem_len = 320*240*2; |
1269 | return 0; |
1270 | } |
1271 | case FBIOGET_VSCREENINFO: { |
1272 | struct fb_var_screeninfo *var = argp; |
7fd42181 |
1273 | static const struct fb_bitfield fbb_red = { offset: 11, length: 5, }; |
1274 | static const struct fb_bitfield fbb_green = { offset: 5, length: 6, }; |
1275 | static const struct fb_bitfield fbb_blue = { offset: 0, length: 5, }; |
dc90c02d |
1276 | |
1277 | memset(var, 0, sizeof(*var)); |
1278 | var->activate = FB_ACTIVATE_NOW; |
1279 | var->xres = |
1280 | var->xres_virtual = 320; |
1281 | var->yres = |
1282 | var->yres_virtual = 240; |
1283 | var->width = |
1284 | var->height = -1; |
1285 | var->vmode = FB_VMODE_NONINTERLACED; |
1286 | var->bits_per_pixel = 16; |
1287 | var->red = fbb_red; |
1288 | var->green = fbb_green; |
1289 | var->blue = fbb_blue; |
1290 | return 0; |
1291 | } |
7fd42181 |
1292 | case FBIOPUT_VSCREENINFO: { |
1293 | struct fb_var_screeninfo *var = argp; |
1294 | dbg(" put vscreen: %dx%d@%d\n", var->xres, var->yres, var->bits_per_pixel); |
1295 | if (var->xres != 320 || var->yres != 240 || var->bits_per_pixel != 16) |
1296 | return -1; |
1297 | return 0; |
1298 | } |
dc90c02d |
1299 | } |
7fd42181 |
1300 | |
1301 | /* *********************** */ |
cbd18fd2 |
1302 | case FAKEDEV_TTY: |
7fd42181 |
1303 | case FAKEDEV_TTY0: |
1304 | // fake tty0 to make GPH SDL happy |
1305 | if (request == 0x4b46) // KDGKBENT |
1306 | return -1; |
1307 | return 0; |
dc90c02d |
1308 | } |
1309 | |
1310 | fail: |
7fd42181 |
1311 | err("bad/ni ioctl(%d, %08x, %p)\n", fd, request, argp); |
b4f4cb40 |
1312 | return -EINVAL; |
dc90c02d |
1313 | } |
1314 | |
8cbb0278 |
1315 | static const char wm97xx_p[] = |
1316 | "5507 0 -831476 0 -4218 16450692 65536"; // from 4.0 fw |
1317 | |
88d814e3 |
1318 | long emu_do_read(int fd, void *buf, int count) |
1319 | { |
88d814e3 |
1320 | int ret, pressed = 0, x, y; |
1321 | struct { |
1322 | u16 pressure, x, y; |
1323 | } wm97xx; |
1324 | |
1325 | if (count < 0) { |
1326 | err("read(%d, %d)\n", fd, count); |
1327 | return -EINVAL; |
1328 | } |
1329 | |
1330 | switch (fd) { |
1331 | case FAKEDEV_GPIO: |
1332 | mmsp2.btn_state = host_read_btns(); |
1333 | |
1334 | if (count > 4) |
1335 | count = 4; |
1336 | memcpy(buf, &mmsp2.btn_state, count); |
1337 | break; |
1338 | case FAKEDEV_WM97XX: |
1339 | ret = host_read_ts(&pressed, &x, &y); |
1340 | if (ret == 0 && pressed) { |
8cbb0278 |
1341 | wm97xx.pressure = 0x8001; // TODO: check the real thing |
88d814e3 |
1342 | wm97xx.x = x * 3750 / 1024 + 200; |
1343 | wm97xx.y = 3750 - y * 3750 / 1024 + 200; |
1344 | } |
1345 | else { |
1346 | wm97xx.pressure = 0; |
1347 | wm97xx.x = wm97xx.y = 200; |
1348 | } |
1349 | |
1350 | if (count > sizeof(wm97xx)) |
1351 | count = sizeof(wm97xx); |
1352 | memcpy(buf, &wm97xx, count); |
1353 | break; |
1354 | case FAKEDEV_WM97XX_P: |
1355 | if (count < sizeof(wm97xx_p)) |
1356 | err("incomplete pointercal read\n"); |
1357 | strncpy(buf, wm97xx_p, count); |
1358 | break; |
1359 | default: |
8cbb0278 |
1360 | dbg("read(%d, %d)\n", fd, count); |
88d814e3 |
1361 | return -EINVAL; |
1362 | } |
1363 | return count; |
1364 | } |
1365 | |
7000b522 |
1366 | struct dev_fd_t emu_interesting_fds[] = { |
1367 | [IFD_SOUND] = { "/dev/dsp", -1, emu_sound_open }, |
1368 | { NULL, 0, NULL }, |
1369 | }; |
1370 | |
7fd42181 |
1371 | static const struct { |
1372 | const char *from; |
1373 | const char *to; |
1374 | } path_map[] = { |
158ddd8d |
1375 | { "/mnt/tmp", "./tmp" }, |
2692251d |
1376 | { "/mnt/sd", "./mntsd" }, |
7fd42181 |
1377 | }; |
1378 | |
2692251d |
1379 | const char *emu_wrap_path(const char *path) |
7fd42181 |
1380 | { |
158ddd8d |
1381 | char *buff, *p; |
3d3fa63b |
1382 | size_t size; |
7fd42181 |
1383 | int i, len; |
2692251d |
1384 | long ret; |
7fd42181 |
1385 | |
1386 | // do only path mapping for now |
1387 | for (i = 0; i < ARRAY_SIZE(path_map); i++) { |
158ddd8d |
1388 | p = strstr(path, path_map[i].from); |
1389 | if (p != NULL) { |
3d3fa63b |
1390 | size = strlen(path) + strlen(path_map[i].to) + 1; |
1391 | buff = malloc(size); |
1392 | if (buff == NULL) |
1393 | break; |
158ddd8d |
1394 | len = p - path; |
1395 | strncpy(buff, path, len); |
1396 | snprintf(buff + len, size - len, "%s%s", path_map[i].to, |
1397 | path + len + strlen(path_map[i].from)); |
3d3fa63b |
1398 | dbg("mapped path \"%s\" -> \"%s\"\n", path, buff); |
2692251d |
1399 | |
1400 | ret = g_mkdir_raw(path_map[i].to, 0666); |
1401 | if (ret != 0 && ret != -EEXIST) |
1402 | err("mkdir(%s): %ld\n", path_map[i].to, ret); |
1403 | |
3d3fa63b |
1404 | return buff; |
7fd42181 |
1405 | } |
1406 | } |
1407 | |
1408 | return path; |
1409 | } |
1410 | |
2692251d |
1411 | void emu_wrap_path_free(const char *w_path, const char *old_path) |
7000b522 |
1412 | { |
1413 | if (w_path != old_path) |
1414 | free((void *)w_path); |
1415 | } |
1416 | |
7fd42181 |
1417 | void *emu_do_fopen(const char *path, const char *mode) |
1418 | { |
7000b522 |
1419 | const char *w_path; |
3d3fa63b |
1420 | FILE *ret; |
7000b522 |
1421 | |
8cbb0278 |
1422 | if (strcmp(path, "/etc/pointercal") == 0) { |
1423 | // use local pontercal, not host's |
1424 | ret = fopen("pointercal", mode); |
1425 | if (ret == NULL) { |
1426 | ret = fopen("pointercal", "w"); |
1427 | if (ret != NULL) { |
1428 | fwrite(wm97xx_p, 1, sizeof(wm97xx_p), ret); |
1429 | fclose(ret); |
1430 | } |
1431 | ret = fopen("pointercal", mode); |
1432 | } |
1433 | } |
1434 | else { |
1435 | w_path = emu_wrap_path(path); |
1436 | ret = fopen(w_path, mode); |
1437 | emu_wrap_path_free(w_path, path); |
1438 | } |
7000b522 |
1439 | |
3d3fa63b |
1440 | return ret; |
7fd42181 |
1441 | } |
1442 | |
3d3fa63b |
1443 | // FIXME: threads.. |
7fd42181 |
1444 | int emu_do_system(const char *command) |
1445 | { |
1446 | static char tmp_path[512]; |
158ddd8d |
1447 | int need_ginge = 0; |
3d3fa63b |
1448 | const char *p2; |
1449 | char *p; |
db9191ed |
1450 | int ret; |
7fd42181 |
1451 | |
1452 | if (command == NULL) |
1453 | return -1; |
1454 | |
158ddd8d |
1455 | for (p2 = command; *p2 && isspace(*p2); p2++) |
1456 | ; |
7fd42181 |
1457 | |
158ddd8d |
1458 | if (*p2 == '.') // relative path? |
1459 | need_ginge = 1; |
1460 | else if (*p2 == '/' && strncmp(p2, "/bin", 4) && strncmp(p2, "/lib", 4) |
1461 | && strncmp(p2, "/sbin", 4) && strncmp(p2, "/usr", 4)) |
1462 | // absolute path, but not a system command |
1463 | need_ginge = 1; |
7fd42181 |
1464 | |
2692251d |
1465 | p2 = emu_wrap_path(command); |
158ddd8d |
1466 | if (need_ginge) { |
1467 | make_local_path(tmp_path, sizeof(tmp_path), "ginge_prep"); |
1468 | p = tmp_path + strlen(tmp_path); |
1469 | |
1470 | snprintf(p, sizeof(tmp_path) - (p - tmp_path), " --nomenu %s", p2); |
1471 | } |
1472 | else |
1473 | snprintf(tmp_path, sizeof(tmp_path), "%s", p2); |
2692251d |
1474 | emu_wrap_path_free(p2, command); |
3d3fa63b |
1475 | |
7fd42181 |
1476 | dbg("system: \"%s\"\n", tmp_path); |
db9191ed |
1477 | |
1478 | // the app might want the screen too.. |
1479 | fb_thread_pause(); |
1480 | ret = system(tmp_path); |
1481 | fb_thread_resume(); |
1482 | return ret; |
7fd42181 |
1483 | } |
1484 | |
78684356 |
1485 | long emu_do_execve(const char *filename, char * const argv[], |
1486 | char * const envp[]) |
7000b522 |
1487 | { |
1488 | const char **new_argv; |
1489 | char *prep_path; |
78684356 |
1490 | int i, argc; |
1491 | long ret; |
7000b522 |
1492 | |
1493 | if (filename == NULL) |
1494 | return -1; |
1495 | |
78684356 |
1496 | if (strstr(filename, "gp2xmenu") != NULL) |
1497 | host_forced_exit(0); |
7000b522 |
1498 | |
1499 | for (i = 0; argv[i] != NULL; i++) |
1500 | ; |
1501 | argc = i + 1; |
1502 | |
1503 | new_argv = calloc(argc + 2, sizeof(new_argv[0])); |
1504 | if (new_argv == NULL) |
1505 | return -1; |
1506 | |
1507 | prep_path = malloc(512); |
1508 | if (prep_path == NULL) |
1509 | return -1; |
1510 | |
1511 | make_local_path(prep_path, 512, "ginge_prep"); |
1512 | new_argv[0] = prep_path; |
1513 | new_argv[1] = "--nomenu"; |
2692251d |
1514 | new_argv[2] = emu_wrap_path(filename); |
7000b522 |
1515 | |
1516 | if (argv[0] != NULL) |
1517 | for (i = 1; argv[i] != NULL; i++) |
1518 | new_argv[i + 2] = argv[i]; |
1519 | |
1520 | dbg("execve \"%s\" %s \"%s\"\n", new_argv[0], new_argv[1], new_argv[2]); |
1521 | ret = execve(new_argv[0], (char **)new_argv, envp); |
78684356 |
1522 | err("execve(%s): %ld\n", new_argv[0], ret); |
7000b522 |
1523 | return ret; |
1524 | } |
1525 | |
499bf01c |
1526 | // vim:shiftwidth=2:expandtab |