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 | |
3d295a9f |
81 | static struct { |
82 | u32 dstctrl; |
83 | u32 dstaddr; |
84 | u32 dststride; |
85 | u32 srcctrl; |
86 | u32 srcaddr; // |
87 | u32 srcstride; |
88 | u32 srcforcolor; |
89 | u32 srcbackcolor; |
90 | u32 patctrl; // |
91 | u32 patforcolor; |
92 | u32 patbackcolor; |
93 | u32 size; |
94 | u32 ctrl; // |
95 | u32 run; |
96 | u32 intc; |
97 | u32 srcfifo; |
98 | } blitter; |
99 | |
0881206b |
100 | #define SRCCTRL_INVIDEO (1 << 8) |
101 | #define SRCCTRL_SRCENB (1 << 7) |
102 | #define CTRL_TRANSPARENCYENB (1 << 11) |
103 | |
3d295a9f |
104 | static struct { |
7000b522 |
105 | // mmsp2 |
6720e4e4 |
106 | u16 mlc_stl_cntl; |
3d295a9f |
107 | union { |
7000b522 |
108 | u32 mlc_stl_adr; // mlcaddress for pollux |
3d295a9f |
109 | struct { |
6720e4e4 |
110 | u16 mlc_stl_adrl; |
111 | u16 mlc_stl_adrh; |
3d295a9f |
112 | }; |
113 | }; |
6720e4e4 |
114 | u16 mlc_stl_pallt_a; |
115 | union { |
116 | u16 mlc_stl_pallt_d[256*2]; |
117 | u32 mlc_stl_pallt_d32[256]; |
118 | }; |
119 | |
7000b522 |
120 | // pollux |
121 | u32 mlccontrol; |
122 | u16 mlcpalette[256]; |
123 | |
6720e4e4 |
124 | // state |
3d3fa63b |
125 | void *umem; |
6720e4e4 |
126 | u32 old_mlc_stl_adr; |
7000b522 |
127 | u32 btn_state; // as seen through /dev/GPIO: 0PVdVu YXBA RLSeSt 0Ri0Dn 0Le0Up |
128 | struct { |
129 | u32 width, height; |
130 | u32 stride; |
131 | u32 bpp; |
132 | u32 dirty_pal:2; |
133 | } v; |
3d295a9f |
134 | } mmsp2; |
7000b522 |
135 | #define pollux mmsp2 // so that code doesn't look that weird |
136 | enum { |
137 | DIRTY_PAL_MMSP2 = 1, |
138 | DIRTY_PAL_POLLUX = 2, |
139 | }; |
3d295a9f |
140 | |
11913091 |
141 | |
c1ffd5ba |
142 | #if defined(LOG_IO) || defined(LOG_IO_UNK) |
6720e4e4 |
143 | static void log_io(const char *pfx, u32 a, u32 d, int size) |
144 | { |
145 | const char *fmt, *reg = ""; |
146 | switch (size) { |
c1ffd5ba |
147 | case 8: fmt = "%s %08x %02x %s\n"; d &= 0xff; break; |
148 | case 32: fmt = "%s %08x %08x %s\n"; break; |
149 | default: fmt = "%s %08x %04x %s\n"; d &= 0xffff; break; |
6720e4e4 |
150 | } |
151 | |
152 | if ((a & ~0xffff) == 0x7f000000) |
153 | reg = regnames[a & 0xffff]; |
154 | |
d0b9b0df |
155 | g_printf(fmt, pfx, a, d, reg); |
6720e4e4 |
156 | } |
157 | #endif |
158 | |
0881206b |
159 | static void memset16(void *dst, u32 pattern, int count) |
160 | { |
161 | u32 *dl; |
162 | u16 *d; |
163 | |
164 | d = (u16 *)((long)dst & ~1); |
165 | if ((long)d & 2) { |
166 | *d++ = pattern; |
167 | count--; |
168 | } |
169 | dl = (void *)d; |
170 | pattern |= pattern << 16; |
171 | |
172 | while (count >= 2) { |
173 | *dl++ = pattern; |
174 | count -= 2; |
175 | } |
176 | if (count) |
177 | *(u16 *)dl = pattern; |
178 | } |
179 | |
180 | static void blt_tr(void *dst, void *src, u32 trc, int w) |
181 | { |
182 | u16 *d = (u16 *)((long)dst & ~1); |
183 | u16 *s = (u16 *)((long)src & ~1); |
184 | |
185 | // XXX: optimize |
186 | for (; w > 0; d++, s++, w--) |
187 | if (*s != trc) |
188 | *d = *s; |
189 | } |
190 | |
191 | #define dump_blitter() \ |
192 | { \ |
193 | u32 *r = &blitter.dstctrl; \ |
194 | int i; \ |
195 | for (i = 0; i < 4*4; i++, r++) { \ |
d0b9b0df |
196 | g_printf("%08x ", *r); \ |
0881206b |
197 | if ((i & 3) == 3) \ |
d0b9b0df |
198 | g_printf("\n"); \ |
0881206b |
199 | } \ |
200 | } |
201 | |
6720e4e4 |
202 | static void *uppermem_lookup(u32 addr, u8 **mem_end) |
11913091 |
203 | { |
3d3fa63b |
204 | // XXX: maybe support mirroring? |
205 | if ((addr & 0xfe000000) != 0x02000000) |
206 | return NULL; |
3d295a9f |
207 | |
3d3fa63b |
208 | *mem_end = (u8 *)mmsp2.umem + 0x02000000; |
209 | return (u8 *)mmsp2.umem - 0x02000000 + addr; |
11913091 |
210 | } |
211 | |
3d295a9f |
212 | static void blitter_do(void) |
11913091 |
213 | { |
0881206b |
214 | u8 *dst, *dste, *src = NULL, *srce = NULL; |
3d295a9f |
215 | int w, h, sstrd, dstrd; |
6720e4e4 |
216 | int to_screen = 0; |
dc90c02d |
217 | u32 bpp, addr; |
3d295a9f |
218 | |
219 | w = blitter.size & 0x7ff; |
220 | h = (blitter.size >> 16) & 0x7ff; |
221 | sstrd = blitter.srcstride; |
222 | dstrd = blitter.dststride; |
223 | |
0881206b |
224 | // XXX: need to confirm this.. |
225 | addr = (blitter.dstaddr & ~3) | ((blitter.dstctrl & 0x1f) >> 3); |
c1ffd5ba |
226 | |
dc90c02d |
227 | // use dst bpp.. How does it do blits with different src bpp? |
228 | bpp = (blitter.dstctrl & 0x20) ? 16 : 8; |
229 | |
c1ffd5ba |
230 | // maybe the screen? |
dc90c02d |
231 | if (((w == 320 && h == 240) || // blit whole screen |
232 | (w * h >= 320*240/2)) && // ..or at least half of the area |
233 | mmsp2.mlc_stl_adr <= addr && addr < mmsp2.mlc_stl_adr + 320*240*2) |
c1ffd5ba |
234 | to_screen = 1; |
235 | |
236 | dst = uppermem_lookup(addr, &dste); |
0881206b |
237 | |
238 | // XXX: assume fill if no SRCENB, but it could be pattern blit.. |
239 | if (blitter.srcctrl & SRCCTRL_SRCENB) { |
240 | if (!(blitter.srcctrl & SRCCTRL_INVIDEO)) |
241 | goto bad_blit; |
242 | |
243 | addr = (blitter.srcaddr & ~3) | ((blitter.srcctrl & 0x1f) >> 3); |
c1ffd5ba |
244 | src = uppermem_lookup(addr, &srce); |
0881206b |
245 | if (src == NULL) |
246 | goto bad_blit; |
247 | |
248 | if (src + sstrd * h > srce) { |
6720e4e4 |
249 | err("blit %08x->%08x %dx%d did not fit src\n", |
0881206b |
250 | blitter.srcaddr, blitter.dstaddr, w, h); |
251 | h = (srce - src) / sstrd; |
252 | } |
3d295a9f |
253 | } |
254 | |
dc90c02d |
255 | if (dst == NULL) |
256 | goto bad_blit; |
257 | |
3d295a9f |
258 | if (dst + dstrd * h > dste) { |
6720e4e4 |
259 | err("blit %08x->%08x %dx%d did not fit dst\n", |
3d295a9f |
260 | blitter.srcaddr, blitter.dstaddr, w, h); |
261 | h = (dste - dst) / dstrd; |
262 | } |
263 | |
0881206b |
264 | if (src != NULL) { |
265 | // copy |
dc90c02d |
266 | if (bpp == 16 && (blitter.ctrl & CTRL_TRANSPARENCYENB)) { |
0881206b |
267 | u32 trc = blitter.ctrl >> 16; |
268 | for (; h > 0; h--, dst += dstrd, src += sstrd) |
269 | blt_tr(dst, src, trc, w); |
270 | } |
271 | else { |
272 | for (; h > 0; h--, dst += dstrd, src += sstrd) |
dc90c02d |
273 | memcpy(dst, src, w * bpp / 8); |
0881206b |
274 | } |
3d295a9f |
275 | } |
0881206b |
276 | else { |
277 | // fill. Assume the pattern is cleared and bg color is used |
278 | u32 bgc = blitter.patbackcolor & 0xffff; |
dc90c02d |
279 | if (bpp == 16) { |
280 | for (; h > 0; h--, dst += dstrd) |
281 | memset16(dst, bgc, w); |
282 | } |
283 | else { |
284 | for (; h > 0; h--, dst += dstrd) |
285 | memset(dst, bgc, w); // bgc? |
286 | } |
0881206b |
287 | } |
6720e4e4 |
288 | |
d0b9b0df |
289 | if (to_screen) { |
290 | fb_sync_thread_futex = 1; |
291 | g_futex_raw(&fb_sync_thread_futex, FUTEX_WAKE, 1, NULL); |
292 | } |
0881206b |
293 | return; |
3d295a9f |
294 | |
0881206b |
295 | bad_blit: |
6720e4e4 |
296 | err("blit %08x->%08x %dx%d translated to %p->%p\n", |
0881206b |
297 | blitter.srcaddr, blitter.dstaddr, w, h, src, dst); |
298 | dump_blitter(); |
3d295a9f |
299 | } |
300 | |
4d045184 |
301 | // FIXME: pass real dimensions to blitters |
7000b522 |
302 | static void mlc_flip(void *src, int bpp, int stride) |
6720e4e4 |
303 | { |
6ca08393 |
304 | static int old_bpp; |
6720e4e4 |
305 | |
4d045184 |
306 | // only pass pal to host if it's dirty |
7000b522 |
307 | if (bpp <= 8 && mmsp2.v.dirty_pal) { |
308 | if (mmsp2.v.dirty_pal == DIRTY_PAL_MMSP2) |
309 | host_video_update_pal32(mmsp2.mlc_stl_pallt_d32); |
310 | else |
311 | host_video_update_pal16(mmsp2.mlcpalette); |
312 | mmsp2.v.dirty_pal = 0; |
6720e4e4 |
313 | } |
314 | |
6ca08393 |
315 | if (bpp != old_bpp) { |
316 | host_video_change_bpp(bpp); |
317 | old_bpp = bpp; |
318 | } |
319 | |
6720e4e4 |
320 | switch (bpp) { |
321 | case 4: |
7000b522 |
322 | host_video_blit4(src, 320, 240, stride); |
6720e4e4 |
323 | break; |
324 | |
325 | case 8: |
7000b522 |
326 | host_video_blit8(src, 320, 240, stride); |
6720e4e4 |
327 | break; |
328 | |
329 | case 16: |
7000b522 |
330 | host_video_blit16(src, 320, 240, stride); |
6720e4e4 |
331 | break; |
332 | |
333 | case 24: |
334 | // TODO |
335 | break; |
336 | } |
6720e4e4 |
337 | } |
338 | |
c1ffd5ba |
339 | static void *fb_sync_thread(void *arg) |
340 | { |
d0b9b0df |
341 | unsigned long sigmask[2] = { ~0ul, ~0ul }; |
342 | struct timespec ts = { 0, 0 }; |
c1ffd5ba |
343 | int invalid_fb_addr = 1; |
344 | int manual_refresh = 0; |
7000b522 |
345 | int frame_counter = 0; |
d0b9b0df |
346 | int wait_ret; |
347 | |
348 | // this thread can't run any signal handlers since the |
349 | // app's stack/tls stuff will never be set up here |
350 | sigmask[0] &= ~(1ul << (SIGSEGV - 1)); |
351 | g_rt_sigprocmask_raw(SIG_SETMASK, sigmask, NULL, sizeof(sigmask)); |
c1ffd5ba |
352 | |
c1ffd5ba |
353 | //ret = setpriority(PRIO_PROCESS, 0, -1); |
354 | //log("setpriority %d\n", ret); |
355 | |
d0b9b0df |
356 | // tell the main thread we're done init |
357 | fb_sync_thread_futex = 0; |
358 | g_futex_raw(&fb_sync_thread_futex, FUTEX_WAKE, 1, NULL); |
c1ffd5ba |
359 | |
360 | while (1) { |
361 | u8 *gp2x_fb, *gp2x_fb_end; |
c1ffd5ba |
362 | |
d0b9b0df |
363 | wait_ret = g_futex_raw(&fb_sync_thread_futex, FUTEX_WAIT, 0, &ts); |
dc90c02d |
364 | |
d0b9b0df |
365 | // this is supposed to be done atomically, but to make life |
366 | // easier ignore it for now, race impact is low anyway |
367 | fb_sync_thread_futex = 0; |
368 | |
369 | if (wait_ret != 0 && wait_ret != -EWOULDBLOCK |
370 | && wait_ret != -ETIMEDOUT) |
371 | { |
372 | err("fb_thread: futex error: %d\n", wait_ret); |
b4f4cb40 |
373 | sleep(1); |
7000b522 |
374 | goto check_keys; |
c1ffd5ba |
375 | } |
db9191ed |
376 | if (fb_sync_thread_paused) { |
d0b9b0df |
377 | ts.tv_nsec = 100000000; |
7000b522 |
378 | goto check_keys; |
db9191ed |
379 | } |
c1ffd5ba |
380 | |
d0b9b0df |
381 | if (wait_ret == 0) { |
382 | ts.tv_nsec = 50000000; |
c1ffd5ba |
383 | manual_refresh++; |
384 | if (manual_refresh == 2) |
4d045184 |
385 | dbg("fb_thread: switch to manual refresh\n"); |
c1ffd5ba |
386 | } else { |
d0b9b0df |
387 | ts.tv_nsec = 16666667; |
c1ffd5ba |
388 | if (manual_refresh > 1) |
4d045184 |
389 | dbg("fb_thread: switch to auto refresh\n"); |
c1ffd5ba |
390 | manual_refresh = 0; |
391 | } |
392 | |
c1ffd5ba |
393 | gp2x_fb = uppermem_lookup(mmsp2.mlc_stl_adr, &gp2x_fb_end); |
7000b522 |
394 | if (gp2x_fb == NULL || gp2x_fb + 320*240 * mmsp2.v.bpp / 8 > gp2x_fb_end) { |
c1ffd5ba |
395 | if (!invalid_fb_addr) { |
396 | err("fb_thread: %08x is out of range\n", mmsp2.mlc_stl_adr); |
397 | invalid_fb_addr = 1; |
398 | } |
399 | continue; |
400 | } |
401 | |
7000b522 |
402 | invalid_fb_addr = 0; |
403 | mlc_flip(gp2x_fb, mmsp2.v.bpp, mmsp2.v.stride); |
404 | |
405 | frame_counter++; |
406 | if (frame_counter & 0x0f) |
407 | continue; |
408 | |
409 | check_keys: |
410 | // this is to check for kill key, in case main thread hung |
411 | // or something else went wrong. |
412 | pollux.btn_state = host_read_btns(); |
c1ffd5ba |
413 | } |
414 | } |
415 | |
db9191ed |
416 | static void fb_thread_pause(void) |
417 | { |
418 | fb_sync_thread_paused = 1; |
419 | // wait until it finishes last refresh |
420 | // that it might be doing now |
421 | usleep(10000); |
422 | } |
423 | |
424 | static void fb_thread_resume(void) |
425 | { |
426 | fb_sync_thread_paused = 0; |
427 | } |
428 | |
7000b522 |
429 | static u32 xread32_io_cmn(u32 a, u32 *handled) |
430 | { |
431 | u32 d = 0; |
432 | |
433 | *handled = 1; |
434 | switch (a) { |
435 | // Wiz stuff |
436 | case 0x402c: // MLCVSTRIDE0 |
437 | case 0x4060: // MLCVSTRIDE1 |
438 | d = pollux.v.stride; |
439 | break; |
440 | case 0x4038: // MLCADDRESS0 |
441 | case 0x406c: // MLCADDRESS1 |
442 | d = pollux.mlc_stl_adr; |
443 | break; |
444 | // wiz_lib reads: |
445 | // ???? ???? YXBA DURiLe ???? VdVuMS LR?? ???? |
446 | // | GPIOC[31:16] | GPIOB[31:16] | |
447 | case 0xa058: // GPIOBPAD |
830ba1bf |
448 | d = (pollux.btn_state >> 1) & 0x0100; |
449 | d |= (pollux.btn_state << 1) & 0x0200; |
7000b522 |
450 | d |= (pollux.btn_state >> 3) & 0x0080; |
451 | d |= (pollux.btn_state >> 5) & 0x0040; |
452 | d |= (pollux.btn_state >> 6) & 0x0c00; |
453 | d <<= 16; |
454 | d = ~d; |
455 | break; |
456 | case 0xa098: // GPIOCPAD |
457 | pollux.btn_state = host_read_btns(); |
458 | d = (pollux.btn_state >> 8) & 0x00f0; |
459 | d |= (pollux.btn_state >> 1) & 0x0008; |
460 | d |= (pollux.btn_state << 2) & 0x0004; |
461 | d |= (pollux.btn_state >> 5) & 0x0002; |
462 | d |= (pollux.btn_state >> 2) & 0x0001; |
463 | d <<= 16; |
464 | d = ~d; |
465 | break; |
466 | default: |
467 | *handled = 0; |
468 | break; |
469 | } |
470 | |
471 | return d; |
472 | } |
473 | |
3d295a9f |
474 | static u32 xread8(u32 a) |
475 | { |
6720e4e4 |
476 | iolog("r8 ", a, 0, 8); |
477 | iolog_unh("r8 ", a, 0, 8); |
3d295a9f |
478 | return 0; |
11913091 |
479 | } |
480 | |
481 | static u32 xread16(u32 a) |
482 | { |
6720e4e4 |
483 | static u32 fudge, old_a; |
484 | u32 d = 0, t; |
485 | |
486 | if ((a & 0xffff0000) == 0x7f000000) { |
487 | u32 a_ = a & 0xffff; |
488 | switch (a_) { |
489 | case 0x0910: // FPLL |
490 | case 0x0912: |
491 | d = 0x9407; |
492 | break; |
493 | // minilib reads as: |
7000b522 |
494 | // 0000 P000 VuVd00 0000 YXBA RLSeSt 0Ri0D 0Le0U |
495 | // | GPIOD |GPIOC[8:15]|GPIOM[0:7] | |
6720e4e4 |
496 | // /dev/GPIO: |
497 | // ... 0PVdVu ... |
498 | case 0x1184: // GPIOC |
499 | d = ~mmsp2.btn_state & 0xff00; |
500 | d |= 0x00ff; |
501 | break; |
502 | case 0x1186: // GPIOD |
503 | t = ~mmsp2.btn_state; |
504 | d = (t >> 9) & 0x0080; |
505 | d |= (t >> 11) & 0x0040; |
506 | d |= (t >> 7) & 0x0800; |
507 | d |= 0x373b; |
508 | break; |
509 | case 0x1198: // GPIOM |
510 | mmsp2.btn_state = host_read_btns(); |
511 | d = ~mmsp2.btn_state & 0xff; |
512 | d |= 0x01aa; |
513 | break; |
c1ffd5ba |
514 | case 0x1836: // reserved |
515 | d = 0x2330; |
516 | break; |
517 | case 0x2816: // DPC_X_MAX |
518 | d = 319; |
519 | break; |
520 | case 0x2818: // DPC_Y_MAX |
521 | d = 239; |
522 | break; |
6720e4e4 |
523 | case 0x28da: |
524 | d = mmsp2.mlc_stl_cntl; |
525 | break; |
c1ffd5ba |
526 | case 0x290e: |
527 | case 0x2912: |
528 | d = mmsp2.mlc_stl_adrl; |
529 | break; |
530 | case 0x2910: |
531 | case 0x2914: |
532 | d = mmsp2.mlc_stl_adrh; |
533 | break; |
6720e4e4 |
534 | case 0x2958: |
535 | d = mmsp2.mlc_stl_pallt_a; |
536 | break; |
7000b522 |
537 | |
6720e4e4 |
538 | default: |
7000b522 |
539 | d = xread32_io_cmn(a_, &t); |
540 | if (!t) |
541 | goto unk; |
542 | if (!(a_ & 2)) |
543 | d >>= 16; |
544 | break; |
6720e4e4 |
545 | } |
546 | goto out; |
547 | } |
548 | |
7000b522 |
549 | unk: |
6720e4e4 |
550 | if (a == old_a) { |
551 | d = fudge; |
552 | fudge = ~fudge; |
553 | } |
554 | old_a = a; |
555 | iolog_unh("r16", a, d & 0xffff, 16); |
556 | |
557 | out: |
558 | d &= 0xffff; |
559 | iolog("r16", a, d, 16); |
560 | return d; |
11913091 |
561 | } |
562 | |
563 | static u32 xread32(u32 a) |
564 | { |
3d295a9f |
565 | u32 d = 0; |
dc90c02d |
566 | if ((a & 0xfff00000) == 0x7f000000) { |
567 | u32 a_ = a & 0xffff; |
3d3fa63b |
568 | struct timespec ts; |
569 | u64 t64; |
7000b522 |
570 | u32 t; |
3d3fa63b |
571 | |
dc90c02d |
572 | switch (a_) { |
573 | case 0x0a00: // TCOUNT, 1/7372800s |
d0b9b0df |
574 | g_clock_gettime_raw(CLOCK_REALTIME, &ts); |
3d3fa63b |
575 | t64 = (u64)ts.tv_sec * 1000000000 + ts.tv_nsec; |
576 | // t * 7372800.0 / 1000000000 * 0x100000000 ~= t * 31665935 |
577 | t64 *= 31665935; |
578 | d = t64 >> 32; |
dc90c02d |
579 | break; |
7000b522 |
580 | |
581 | default: |
582 | d = xread32_io_cmn(a_, &t); |
583 | if (!t) |
584 | goto unh; |
585 | break; |
dc90c02d |
586 | } |
7000b522 |
587 | goto out; |
dc90c02d |
588 | } |
3d295a9f |
589 | if ((a & 0xfff00000) == 0x7f100000) { |
590 | u32 *bl = &blitter.dstctrl; |
6720e4e4 |
591 | u32 a_ = a & 0xfff; |
592 | if (a_ < 0x40) { |
593 | d = bl[a_ / 4]; |
594 | if (a_ == 0x34) |
595 | d = 0; // not busy |
596 | goto out; |
597 | } |
3d295a9f |
598 | } |
7000b522 |
599 | |
600 | unh: |
6720e4e4 |
601 | iolog_unh("r32", a, d, 32); |
602 | |
603 | out: |
604 | iolog("r32", a, d, 32); |
3d295a9f |
605 | return d; |
11913091 |
606 | } |
607 | |
608 | static void xwrite8(u32 a, u32 d) |
609 | { |
6720e4e4 |
610 | iolog("w8 ", a, d, 8); |
611 | iolog_unh("w8 ", a, d, 8); |
11913091 |
612 | } |
613 | |
614 | static void xwrite16(u32 a, u32 d) |
615 | { |
6720e4e4 |
616 | iolog("w16", a, d, 16); |
3d295a9f |
617 | if ((a & 0xfff00000) == 0x7f000000) { |
6720e4e4 |
618 | u32 a_ = a & 0xffff; |
619 | switch (a_) { |
7000b522 |
620 | case 0x28da: { |
621 | int mode; |
622 | mmsp2.mlc_stl_cntl = d | 0xaa; |
623 | mode = (d >> 9) & 3; |
624 | mmsp2.v.bpp = mode ? mode * 8 : 4; |
625 | break; |
626 | } |
627 | case 0x290c: |
628 | mmsp2.v.stride = d; |
629 | return; |
630 | case 0x290e: |
631 | case 0x2910: |
632 | // odd addresses don't affect LCD. What about TV? |
633 | return; |
634 | case 0x2912: |
635 | mmsp2.mlc_stl_adrl = d; |
636 | return; |
637 | case 0x2914: |
638 | mmsp2.mlc_stl_adrh = d; |
d0b9b0df |
639 | if (mmsp2.mlc_stl_adr != mmsp2.old_mlc_stl_adr) { |
7000b522 |
640 | // ask for refresh |
d0b9b0df |
641 | fb_sync_thread_futex = 1; |
642 | g_futex_raw(&fb_sync_thread_futex, FUTEX_WAKE, 1, NULL); |
643 | } |
7000b522 |
644 | mmsp2.old_mlc_stl_adr = mmsp2.mlc_stl_adr; |
645 | return; |
f01759de |
646 | case 0x2958: // MLC_STL_PALLT_A |
7000b522 |
647 | mmsp2.mlc_stl_pallt_a = d & 0x1ff; |
648 | return; |
f01759de |
649 | case 0x295a: // MLC_STL_PALLT_D |
7000b522 |
650 | mmsp2.mlc_stl_pallt_d[mmsp2.mlc_stl_pallt_a++] = d; |
651 | mmsp2.mlc_stl_pallt_a &= 0x1ff; |
652 | mmsp2.v.dirty_pal = DIRTY_PAL_MMSP2; |
653 | return; |
3d295a9f |
654 | } |
3d295a9f |
655 | } |
6720e4e4 |
656 | iolog_unh("w16", a, d, 16); |
11913091 |
657 | } |
658 | |
659 | static void xwrite32(u32 a, u32 d) |
660 | { |
6720e4e4 |
661 | iolog("w32", a, d, 32); |
662 | |
7000b522 |
663 | if ((a & 0xfff00000) == 0x7f000000) { |
664 | u32 a_ = a & 0xffff; |
665 | switch (a_) { |
f01759de |
666 | // GP2X |
667 | case 0x295a: // MLC_STL_PALLT_D |
668 | // special unaligned 32bit write, allegro seems to rely on it |
669 | mmsp2.mlc_stl_pallt_d[mmsp2.mlc_stl_pallt_a++ & 0x1ff] = d; |
670 | mmsp2.mlc_stl_pallt_d[mmsp2.mlc_stl_pallt_a++ & 0x1ff] = d >> 16; |
671 | mmsp2.mlc_stl_pallt_a &= 0x1ff; |
672 | mmsp2.v.dirty_pal = DIRTY_PAL_MMSP2; |
673 | return; |
7000b522 |
674 | // Wiz |
675 | case 0x4024: // MLCCONTROL0 |
676 | case 0x4058: // MLCCONTROL1 |
677 | pollux.mlccontrol = d; |
678 | if (!(d & 0x20)) |
679 | return; // layer not enabled |
680 | if ((d >> 16) == 0x443A) |
681 | pollux.v.bpp = 8; |
682 | else |
683 | pollux.v.bpp = 16; |
684 | return; |
685 | case 0x402c: // MLCVSTRIDE0 |
686 | case 0x4060: // MLCVSTRIDE1 |
687 | pollux.v.stride = d; |
688 | return; |
689 | case 0x4038: // MLCADDRESS0 |
690 | case 0x406c: // MLCADDRESS1 |
691 | pollux.mlc_stl_adr = d; |
d0b9b0df |
692 | if (d != mmsp2.old_mlc_stl_adr) { |
7000b522 |
693 | // ask for refresh |
d0b9b0df |
694 | fb_sync_thread_futex = 1; |
695 | g_futex_raw(&fb_sync_thread_futex, FUTEX_WAKE, 1, NULL); |
696 | } |
7000b522 |
697 | mmsp2.old_mlc_stl_adr = d; |
698 | return; |
699 | case 0x403c: // MLCPALETTE0 |
700 | case 0x4070: // MLCPALETTE1 |
701 | pollux.mlcpalette[d >> 24] = d; |
702 | pollux.v.dirty_pal = DIRTY_PAL_POLLUX; |
703 | return; |
704 | } |
705 | } |
3d295a9f |
706 | if ((a & 0xfff00000) == 0x7f100000) { |
707 | u32 *bl = &blitter.dstctrl; |
6720e4e4 |
708 | u32 a_ = a & 0xfff; |
709 | if (a_ < 0x40) { |
710 | bl[a_ / 4] = d; |
711 | if (a_ == 0x34 && (d & 1)) |
712 | blitter_do(); |
713 | return; |
714 | } |
3d295a9f |
715 | } |
6720e4e4 |
716 | iolog_unh("w32", a, d, 32); |
11913091 |
717 | } |
718 | |
6720e4e4 |
719 | #define LINKPAGE_SIZE 0x1000 |
720 | #define LINKPAGE_COUNT 4 |
721 | #define LINKPAGE_ALLOC (LINKPAGE_SIZE * LINKPAGE_COUNT) |
722 | |
723 | struct op_context { |
724 | u32 pc; |
725 | u32 op; |
726 | u32 code[0]; |
727 | }; |
728 | |
3d3fa63b |
729 | struct op_linkpage { |
6720e4e4 |
730 | void (*handler)(struct op_context *op_ctx); |
731 | u32 code[0]; |
732 | }; |
733 | |
3d3fa63b |
734 | struct op_stackframe { |
735 | u32 saved_regs[15]; |
736 | u32 cpsr; |
737 | }; |
738 | |
739 | static struct op_linkpage *g_linkpage; |
6720e4e4 |
740 | static u32 *g_code_ptr; |
741 | static int g_linkpage_count; |
742 | |
10c900a1 |
743 | enum opcond { |
744 | C_EQ, C_NE, C_CS, C_CC, C_MI, C_PL, C_VS, C_VC, |
745 | C_HI, C_LS, C_GE, C_LT, C_GT, C_LE, C_AL, |
746 | }; |
747 | enum cpsr_cond { |
748 | CPSR_N = (1u << 31), |
749 | CPSR_Z = (1u << 30), |
750 | CPSR_C = (1u << 29), |
751 | CPSR_V = (1u << 28), |
752 | }; |
753 | |
11913091 |
754 | #define BIT_SET(v, b) (v & (1 << (b))) |
755 | |
3d3fa63b |
756 | void emu_handle_op(struct op_context *op_ctx, struct op_stackframe *sframe) |
11913091 |
757 | { |
3d3fa63b |
758 | u32 *regs = sframe->saved_regs; |
10c900a1 |
759 | u32 cpsr = sframe->cpsr; |
6720e4e4 |
760 | u32 op = op_ctx->op; |
11913091 |
761 | u32 t, shift, ret, addr; |
10c900a1 |
762 | int i, rn, rd, cond; |
11913091 |
763 | |
fea1465c |
764 | cond = (op & 0xf0000000) >> 28; |
11913091 |
765 | rd = (op & 0x0000f000) >> 12; |
766 | rn = (op & 0x000f0000) >> 16; |
767 | |
10c900a1 |
768 | if (cond != 0x0e) { |
769 | switch (cond) { |
770 | case C_EQ: if ( (cpsr & CPSR_Z)) break; return; |
771 | case C_NE: if (!(cpsr & CPSR_Z)) break; return; |
772 | case C_CS: if ( (cpsr & CPSR_C)) break; return; |
773 | case C_CC: if (!(cpsr & CPSR_C)) break; return; |
774 | case C_MI: if ( (cpsr & CPSR_N)) break; return; |
775 | case C_PL: if (!(cpsr & CPSR_N)) break; return; |
776 | case C_VS: if ( (cpsr & CPSR_V)) break; return; |
777 | case C_VC: if (!(cpsr & CPSR_V)) break; return; |
778 | default: |
779 | goto unhandled; |
780 | } |
781 | } |
fea1465c |
782 | |
11913091 |
783 | if ((op & 0x0f200090) == 0x01000090) { // AM3: LDRH, STRH |
86418a84 |
784 | if (!BIT_SET(op, 5)) // !H |
785 | goto unhandled; |
786 | if (BIT_SET(op, 6) && !BIT_SET(op, 20)) // S && !L |
11913091 |
787 | goto unhandled; |
788 | |
789 | if (BIT_SET(op, 22)) // imm offset |
790 | t = ((op & 0xf00) >> 4) | (op & 0x0f); |
791 | else // reg offset |
792 | t = regs[op & 0x000f]; |
793 | |
794 | if (!BIT_SET(op, 23)) |
795 | t = -t; |
796 | addr = regs[rn] + t; |
797 | |
798 | if (BIT_SET(op, 20)) { // Load |
799 | ret = xread16(addr); |
86418a84 |
800 | if (BIT_SET(op, 6)) { // S |
801 | ret <<= 16; |
802 | ret = (signed int)ret >> 16; |
803 | } |
11913091 |
804 | regs[rd] = ret; |
805 | } |
806 | else |
807 | xwrite16(addr, regs[rd]); |
808 | } |
fea1465c |
809 | else if ((op & 0x0c000000) == 0x04000000) { // load/store word/byte |
810 | if (BIT_SET(op, 21)) |
811 | goto unhandled; // unprivileged |
11913091 |
812 | if (BIT_SET(op, 25)) { // reg offs |
813 | if (BIT_SET(op, 4)) |
fea1465c |
814 | goto unhandled; // nah it's media |
11913091 |
815 | |
816 | t = regs[op & 0x000f]; |
817 | shift = (op & 0x0f80) >> 7; |
818 | switch ((op & 0x0060) >> 5) { |
819 | case 0: t = t << shift; break; |
820 | case 1: t = t >> (shift + 1); break; |
821 | case 2: t = (signed int)t >> (shift + 1); break; |
822 | case 3: goto unhandled; // I'm just lazy |
823 | } |
824 | } |
825 | else // imm offs |
826 | t = op & 0x0fff; |
827 | |
828 | if (!BIT_SET(op, 23)) |
829 | t = -t; |
fea1465c |
830 | |
831 | addr = regs[rn]; |
832 | if (BIT_SET(op, 24)) // pre-indexed |
833 | addr += t; |
834 | if (!BIT_SET(op, 24) || BIT_SET(op, 21)) |
835 | regs[rn] += t; // writeback |
11913091 |
836 | |
837 | if (BIT_SET(op, 20)) { // Load |
838 | if (BIT_SET(op, 22)) // Byte |
839 | ret = xread8(addr); |
840 | else |
841 | ret = xread32(addr); |
842 | regs[rd] = ret; |
843 | } |
844 | else { |
845 | if (BIT_SET(op, 22)) // Byte |
846 | xwrite8(addr, regs[rd]); |
847 | else |
848 | xwrite32(addr, regs[rd]); |
849 | } |
850 | } |
851 | else |
852 | goto unhandled; |
853 | |
86418a84 |
854 | #if 0 |
11913091 |
855 | if (addr != addr_check) { |
856 | fprintf(stderr, "bad calculated addr: %08x vs %08x\n", addr, addr_check); |
857 | abort(); |
858 | } |
86418a84 |
859 | #endif |
11913091 |
860 | return; |
861 | |
862 | unhandled: |
6720e4e4 |
863 | err("unhandled IO op %08x @ %08x\n", op, op_ctx->pc); |
10c900a1 |
864 | for (i = 0; i < 8-1; i++) |
865 | err(" r%d=%08x r%-2d=%08x\n", i, regs[i], i+8, regs[i+8]); |
866 | err(" r%d=%08x cpsr=%08x\n", i, regs[i], cpsr); |
fea1465c |
867 | abort(); |
86418a84 |
868 | } |
869 | |
870 | static u32 make_offset12(u32 *pc, u32 *target) |
871 | { |
872 | int lp_offs, u = 1; |
873 | |
874 | lp_offs = (char *)target - (char *)pc - 2*4; |
875 | if (lp_offs < 0) { |
876 | lp_offs = -lp_offs; |
877 | u = 0; |
878 | } |
879 | if (lp_offs >= LINKPAGE_SIZE) { |
6720e4e4 |
880 | err("linkpage too far: %d\n", lp_offs); |
86418a84 |
881 | abort(); |
882 | } |
883 | |
884 | return (u << 23) | lp_offs; |
885 | } |
886 | |
6720e4e4 |
887 | static u32 make_jmp(u32 *pc, u32 *target, int bl) |
86418a84 |
888 | { |
889 | int jmp_val; |
890 | |
891 | jmp_val = target - pc - 2; |
892 | if (jmp_val < (int)0xff000000 || jmp_val > 0x00ffffff) { |
6720e4e4 |
893 | err("jump out of range (%p -> %p)\n", pc, target); |
86418a84 |
894 | abort(); |
895 | } |
896 | |
6720e4e4 |
897 | return 0xea000000 | (bl << 24) | (jmp_val & 0x00ffffff); |
86418a84 |
898 | } |
899 | |
900 | static void emit_op(u32 op) |
901 | { |
902 | *g_code_ptr++ = op; |
903 | } |
904 | |
905 | static void emit_op_io(u32 op, u32 *target) |
906 | { |
907 | op |= make_offset12(g_code_ptr, target); |
908 | emit_op(op); |
909 | } |
910 | |
6720e4e4 |
911 | static void init_linkpage(void) |
912 | { |
3d3fa63b |
913 | g_linkpage->handler = emu_call_handle_op; |
6720e4e4 |
914 | g_code_ptr = g_linkpage->code; |
6720e4e4 |
915 | } |
916 | |
86418a84 |
917 | static void segv_sigaction(int num, siginfo_t *info, void *ctx) |
918 | { |
919 | struct ucontext *context = ctx; |
920 | u32 *regs = (u32 *)&context->uc_mcontext.arm_r0; |
921 | u32 *pc = (u32 *)regs[15]; |
6720e4e4 |
922 | struct op_context *op_ctx; |
7fd42181 |
923 | int i, lp_size; |
86418a84 |
924 | |
6720e4e4 |
925 | if (((regs[15] ^ (u32)&segv_sigaction) & 0xff000000) == 0 || // PC is in our segment or |
926 | (((regs[15] ^ (u32)g_linkpage) & ~(LINKPAGE_ALLOC - 1)) == 0) || // .. in linkpage |
927 | ((long)info->si_addr & 0xffe00000) != 0x7f000000) // faulting not where expected |
86418a84 |
928 | { |
929 | // real crash - time to die |
6720e4e4 |
930 | err("segv %d %p @ %08x\n", info->si_code, info->si_addr, regs[15]); |
7fd42181 |
931 | for (i = 0; i < 8; i++) |
10c900a1 |
932 | dbg(" r%d=%08x r%-2d=%08x\n", i, regs[i], i+8, regs[i+8]); |
86418a84 |
933 | signal(num, SIG_DFL); |
934 | raise(num); |
c1ffd5ba |
935 | return; |
86418a84 |
936 | } |
0881206b |
937 | segvlog("segv %d %p @ %08x\n", info->si_code, info->si_addr, regs[15]); |
86418a84 |
938 | |
939 | // spit PC and op |
6720e4e4 |
940 | op_ctx = (void *)g_code_ptr; |
941 | op_ctx->pc = (u32)pc; |
942 | op_ctx->op = *pc; |
943 | g_code_ptr = &op_ctx->code[0]; |
86418a84 |
944 | |
945 | // emit jump to code ptr |
6720e4e4 |
946 | *pc = make_jmp(pc, g_code_ptr, 0); |
86418a84 |
947 | |
948 | // generate code: |
3d3fa63b |
949 | emit_op (0xe50d0000 + 0xf00 - 4 * 0); // str r0, [sp, #(-0xf00 + r0_offs)] |
950 | emit_op (0xe50de000 + 0xf00 - 4 * 14); // str lr, [sp, #(-0xf00 + lr_offs)] |
6720e4e4 |
951 | emit_op (0xe24f0000 + (g_code_ptr - (u32 *)op_ctx + 2) * 4); // sub r0, pc, #op_ctx |
3d3fa63b |
952 | emit_op (0xe1a0e00f); // mov lr, pc |
953 | emit_op_io(0xe51ff000, (u32 *)&g_linkpage->handler); // ldr pc, =handle_op |
954 | emit_op (0xe51de000 + 0xf00 - 4 * 14); // ldr lr, [sp, #(-0xf00 + lr_offs)] |
6720e4e4 |
955 | emit_op (make_jmp(g_code_ptr, pc + 1, 0)); // jmp <back> |
86418a84 |
956 | |
957 | // sync caches |
958 | sys_cacheflush(pc, pc + 1); |
959 | sys_cacheflush(g_linkpage, g_code_ptr); |
960 | |
961 | lp_size = (char *)g_code_ptr - (char *)g_linkpage; |
0881206b |
962 | segvlog("code #%d %d/%d\n", g_linkpage_count, lp_size, LINKPAGE_SIZE); |
86418a84 |
963 | |
964 | if (lp_size + 13*4 > LINKPAGE_SIZE) { |
965 | g_linkpage_count++; |
966 | if (g_linkpage_count >= LINKPAGE_COUNT) { |
6720e4e4 |
967 | err("too many linkpages needed\n"); |
86418a84 |
968 | abort(); |
969 | } |
970 | g_linkpage = (void *)((char *)g_linkpage + LINKPAGE_SIZE); |
971 | init_linkpage(); |
972 | } |
973 | //handle_op(regs[15], op, regs, (u32)info->si_addr); |
974 | //regs[15] += 4; |
975 | } |
11913091 |
976 | |
977 | void emu_init(void *map_bottom) |
978 | { |
7fd42181 |
979 | sigaction_t segv_action = { |
11913091 |
980 | .sa_sigaction = segv_sigaction, |
981 | .sa_flags = SA_SIGINFO, |
982 | }; |
6720e4e4 |
983 | void *pret; |
984 | int ret; |
11913091 |
985 | |
830ba1bf |
986 | #ifdef PND |
987 | if (geteuid() == 0) { |
b4f4cb40 |
988 | err("don't try to run as root, device registers or memory " |
989 | "might get trashed crashing the OS or even damaging the device.\n"); |
830ba1bf |
990 | exit(1); |
991 | } |
992 | #endif |
993 | |
86418a84 |
994 | g_linkpage = (void *)(((u32)map_bottom - LINKPAGE_ALLOC) & ~0xfff); |
7fd42181 |
995 | pret = mmap(g_linkpage, LINKPAGE_ALLOC, PROT_READ|PROT_WRITE, |
4d045184 |
996 | MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED, -1, 0); |
6720e4e4 |
997 | if (pret != g_linkpage) { |
998 | perror(PFX "mmap linkpage"); |
11913091 |
999 | exit(1); |
1000 | } |
c1ffd5ba |
1001 | log("linkpages @ %p\n", g_linkpage); |
86418a84 |
1002 | init_linkpage(); |
11913091 |
1003 | |
4d045184 |
1004 | // host stuff |
1005 | ret = host_init(); |
1006 | if (ret != 0) { |
1007 | err("can't init host\n"); |
3d3fa63b |
1008 | exit(1); |
1009 | } |
1010 | |
4d045184 |
1011 | ret = host_video_init(NULL, 0); |
2ce69bdf |
1012 | if (ret != 0) { |
4d045184 |
1013 | err("can't init host video\n"); |
1014 | exit(1); |
1015 | } |
1016 | |
5853ddbd |
1017 | // TODO: check if this really fails on Wiz.. |
4d045184 |
1018 | mmsp2.umem = mmap(NULL, 0x2000000, PROT_READ|PROT_WRITE|PROT_EXEC, |
1019 | MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); |
5853ddbd |
1020 | #ifdef WIZ |
1021 | if (mmsp2.umem == MAP_FAILED) { |
1022 | // we are short on memmory on Wiz, need special handling |
1023 | extern void *host_mmap_upper(void); |
1024 | mmsp2.umem = host_mmap_upper(); |
1025 | } |
4d045184 |
1026 | #endif |
1027 | if (mmsp2.umem == MAP_FAILED) { |
1028 | perror(PFX "mmap upper mem"); |
3d295a9f |
1029 | exit(1); |
1030 | } |
c1ffd5ba |
1031 | |
d0b9b0df |
1032 | pret = mmap(NULL, THREAD_STACK_SIZE, PROT_READ|PROT_WRITE|PROT_EXEC, |
1033 | MAP_PRIVATE|MAP_ANONYMOUS|MAP_GROWSDOWN, -1, 0); |
1034 | if (mmsp2.umem == MAP_FAILED) { |
1035 | perror(PFX "mmap thread stack"); |
1036 | exit(1); |
1037 | } |
1038 | fb_sync_thread_futex = 1; |
1039 | ret = g_clone(CLONE_VM | CLONE_FS | CLONE_FILES |
1040 | | CLONE_SIGHAND | CLONE_THREAD, |
1041 | (char *)pret + THREAD_STACK_SIZE, 0, 0, 0, |
1042 | fb_sync_thread); |
1043 | if (ret == 0 || ret == -1) { |
1044 | perror(PFX "start fb thread"); |
c1ffd5ba |
1045 | exit(1); |
1046 | } |
d0b9b0df |
1047 | g_futex_raw(&fb_sync_thread_futex, FUTEX_WAIT, 1, NULL); |
c1ffd5ba |
1048 | |
7000b522 |
1049 | // defaults |
c1ffd5ba |
1050 | mmsp2.mlc_stl_adr = 0x03101000; // fb2 is at 0x03381000 |
7fd42181 |
1051 | mmsp2.mlc_stl_cntl = 0x4ab; // 16bpp, region 1 active |
7000b522 |
1052 | mmsp2.v.width = 320; |
1053 | mmsp2.v.height = 240; |
1054 | mmsp2.v.stride = 320*2; |
1055 | mmsp2.v.bpp = 16; |
1056 | mmsp2.v.dirty_pal = 1; |
c1ffd5ba |
1057 | |
1058 | sigemptyset(&segv_action.sa_mask); |
1059 | sigaction(SIGSEGV, &segv_action, NULL); |
3d295a9f |
1060 | } |
1061 | |
b4f4cb40 |
1062 | long emu_read_gpiodev(void *buf, int count) |
3d295a9f |
1063 | { |
4d045184 |
1064 | if (count <= 0) { |
6720e4e4 |
1065 | err("gpiodev read %d?\n", count); |
b4f4cb40 |
1066 | return -EINVAL; |
3d295a9f |
1067 | } |
4d045184 |
1068 | if (count > 4) |
1069 | count = 4; |
3d295a9f |
1070 | |
4d045184 |
1071 | mmsp2.btn_state = host_read_btns(); |
1072 | memcpy(buf, &mmsp2.btn_state, count); |
1073 | return count; |
11913091 |
1074 | } |
1075 | |
b4f4cb40 |
1076 | static long emu_mmap_dev(unsigned int length, int prot, int flags, unsigned int offset) |
11913091 |
1077 | { |
3d3fa63b |
1078 | u8 *umem, *umem_end; |
11913091 |
1079 | |
3d295a9f |
1080 | // SoC regs |
7000b522 |
1081 | if ((offset & ~0x1ffff) == 0xc0000000) { |
b4f4cb40 |
1082 | return g_mmap2_raw((void *)0x7f000000, length, PROT_NONE, |
11913091 |
1083 | MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED|MAP_NORESERVE, -1, 0); |
1084 | } |
7000b522 |
1085 | // MMSP2 blitter |
11913091 |
1086 | if ((offset & ~0xffff) == 0xe0020000) { |
b4f4cb40 |
1087 | return g_mmap2_raw((void *)0x7f100000, length, PROT_NONE, |
11913091 |
1088 | MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED|MAP_NORESERVE, -1, 0); |
1089 | } |
3d295a9f |
1090 | // upper mem |
3d3fa63b |
1091 | if ((offset & 0xfe000000) != 0x02000000) { |
6720e4e4 |
1092 | err("unexpected devmem mmap @ %08x\n", offset); |
b4f4cb40 |
1093 | return -EINVAL; |
3d295a9f |
1094 | } |
1095 | |
3d3fa63b |
1096 | umem = uppermem_lookup(offset, &umem_end); |
1097 | if (umem + length > umem_end) |
1098 | err("warning: uppermem @ %08x overflows by %d bytes\n", |
1099 | offset, umem + length - umem_end); |
1100 | |
3ef07128 |
1101 | dbg("upper mem @ %08x %x = %p\n", offset, length, umem); |
b4f4cb40 |
1102 | return (long)umem; |
11913091 |
1103 | } |
1104 | |
b4f4cb40 |
1105 | long emu_do_mmap(unsigned int length, int prot, int flags, int fd, |
1106 | unsigned int offset) |
dc90c02d |
1107 | { |
1108 | if (fd == FAKEDEV_MEM) |
1109 | return emu_mmap_dev(length, prot, flags, offset); |
1110 | |
1111 | if (fd == FAKEDEV_FB0) |
1112 | return emu_mmap_dev(length, prot, flags, offset + 0x03101000); |
1113 | |
1114 | if (fd == FAKEDEV_FB1) |
1115 | return emu_mmap_dev(length, prot, flags, offset + 0x03381000); |
1116 | |
7fd42181 |
1117 | err("bad/ni mmap(?, %d, %x, %x, %d, %08x)\n", length, prot, flags, fd, offset); |
b4f4cb40 |
1118 | return -EINVAL; |
dc90c02d |
1119 | } |
1120 | |
b4f4cb40 |
1121 | long emu_do_munmap(void *addr, unsigned int length) |
3ef07128 |
1122 | { |
1123 | u8 *p = addr; |
1124 | |
1125 | // don't allow to unmap upper mem |
1126 | if ((u8 *)mmsp2.umem <= p && p < (u8 *)mmsp2.umem + 0x2000000) { |
1127 | dbg("ignoring munmap: %p %x\n", addr, length); |
1128 | return 0; |
1129 | } |
1130 | |
1131 | return -EAGAIN; |
1132 | } |
1133 | |
7000b522 |
1134 | static void emu_sound_open(int fd) |
1135 | { |
1136 | #ifdef PND |
1137 | int ret, frag; |
1138 | |
1139 | // set default buffer size to 16 * 1K |
1140 | frag = (16<<16) | 10; // 16K |
b4f4cb40 |
1141 | ret = g_ioctl_raw(fd, SNDCTL_DSP_SETFRAGMENT, &frag); |
1142 | if (ret != 0) |
1143 | err("snd ioctl SETFRAGMENT %08x: %d\n", frag, ret); |
7000b522 |
1144 | #endif |
1145 | } |
1146 | |
b4f4cb40 |
1147 | static long emu_sound_ioctl(int fd, int request, void *argp) |
dc90c02d |
1148 | { |
1149 | int *arg = argp; |
1150 | |
1151 | #if 0 |
1152 | dbg("snd ioctl(%d, %08x, %p)", fd, request, argp); |
1153 | if (arg != NULL) |
1154 | dbg_c(" [%d]", *arg); |
1155 | dbg_c("\n"); |
1156 | #endif |
1157 | |
1158 | /* People set strange frag settings on GP2X, which even manage |
1159 | * to break audio on pandora (causes writes to fail). |
1160 | * Catch this and set to something that works. */ |
7000b522 |
1161 | switch(request) { |
1162 | case SNDCTL_DSP_SETFRAGMENT: { |
b4f4cb40 |
1163 | int bsize, frag, frag_cnt; |
1164 | long ret; |
1165 | |
7000b522 |
1166 | if (arg == NULL) |
1167 | break; |
dc90c02d |
1168 | |
7000b522 |
1169 | frag = *arg & 0xffff; |
1170 | frag_cnt = *arg >> 16; |
1171 | bsize = frag_cnt << frag; |
1172 | if (frag < 10 || bsize < 4096*4 || bsize > 4096*4*2) { |
1173 | /* |
1174 | * ~4ms. gpSP wants small buffers or else it stutters |
1175 | * because of it's audio thread sync stuff |
1176 | * XXX: hardcoding, as low samplerates will result in small fragment size, |
1177 | * which itself causes ALSA stall and hangs the program. |
1178 | * Also some apps change samplerate without reopening /dev/dsp, |
1179 | * which causes ALSA to reject SNDCTL_DSP_SETFRAGMENT. |
1180 | */ |
1181 | bsize = 44100 / 250 * 4; |
1182 | |
1183 | for (frag = 0; bsize; bsize >>= 1, frag++) |
1184 | ; |
1185 | |
1186 | frag_cnt = 16; |
1187 | } |
dc90c02d |
1188 | |
7000b522 |
1189 | frag |= frag_cnt << 16; |
b4f4cb40 |
1190 | ret = g_ioctl_raw(fd, SNDCTL_DSP_SETFRAGMENT, &frag); |
1191 | if (ret != 0) |
1192 | err("snd ioctl SETFRAGMENT %08x: %ld\n", frag, ret); |
7000b522 |
1193 | // indicate success even if we fail (because of ALSA mostly), |
1194 | // things like MikMod will bail out otherwise. |
1195 | return 0; |
dc90c02d |
1196 | } |
7000b522 |
1197 | case SNDCTL_DSP_SYNC: |
1198 | // Franxis tends to use sync/write loops, bad idea under ALSA |
1199 | return 0; |
1200 | default: |
1201 | break; |
dc90c02d |
1202 | } |
dc90c02d |
1203 | |
b4f4cb40 |
1204 | return g_ioctl_raw(fd, request, argp); |
dc90c02d |
1205 | } |
1206 | |
b4f4cb40 |
1207 | long emu_do_ioctl(int fd, int request, void *argp) |
dc90c02d |
1208 | { |
1209 | if (fd == emu_interesting_fds[IFD_SOUND].fd) |
1210 | return emu_sound_ioctl(fd, request, argp); |
1211 | |
7fd42181 |
1212 | switch (fd) { |
1213 | /* *********************** */ |
1214 | case FAKEDEV_FB0: |
1215 | case FAKEDEV_FB1: |
1216 | if (argp == NULL) |
1217 | goto fail; |
dc90c02d |
1218 | |
dc90c02d |
1219 | switch (request) { |
1220 | case FBIOGET_FSCREENINFO: { |
1221 | struct fb_fix_screeninfo *fix = argp; |
1222 | |
1223 | memset(fix, 0, sizeof(*fix)); |
1224 | strcpy(fix->id, "mmsp2_RGB0"); |
1225 | fix->type = FB_TYPE_PACKED_PIXELS; |
1226 | fix->accel = FB_ACCEL_NONE; |
7fd42181 |
1227 | fix->visual = FB_VISUAL_TRUECOLOR; |
1228 | fix->line_length = 320*2; |
dc90c02d |
1229 | fix->smem_start = (fd == FAKEDEV_FB0) ? 0x03101000 : 0x03381000; |
1230 | fix->smem_len = 320*240*2; |
1231 | return 0; |
1232 | } |
1233 | case FBIOGET_VSCREENINFO: { |
1234 | struct fb_var_screeninfo *var = argp; |
7fd42181 |
1235 | static const struct fb_bitfield fbb_red = { offset: 11, length: 5, }; |
1236 | static const struct fb_bitfield fbb_green = { offset: 5, length: 6, }; |
1237 | static const struct fb_bitfield fbb_blue = { offset: 0, length: 5, }; |
dc90c02d |
1238 | |
1239 | memset(var, 0, sizeof(*var)); |
1240 | var->activate = FB_ACTIVATE_NOW; |
1241 | var->xres = |
1242 | var->xres_virtual = 320; |
1243 | var->yres = |
1244 | var->yres_virtual = 240; |
1245 | var->width = |
1246 | var->height = -1; |
1247 | var->vmode = FB_VMODE_NONINTERLACED; |
1248 | var->bits_per_pixel = 16; |
1249 | var->red = fbb_red; |
1250 | var->green = fbb_green; |
1251 | var->blue = fbb_blue; |
1252 | return 0; |
1253 | } |
7fd42181 |
1254 | case FBIOPUT_VSCREENINFO: { |
1255 | struct fb_var_screeninfo *var = argp; |
1256 | dbg(" put vscreen: %dx%d@%d\n", var->xres, var->yres, var->bits_per_pixel); |
1257 | if (var->xres != 320 || var->yres != 240 || var->bits_per_pixel != 16) |
1258 | return -1; |
1259 | return 0; |
1260 | } |
dc90c02d |
1261 | } |
7fd42181 |
1262 | |
1263 | /* *********************** */ |
1264 | case FAKEDEV_TTY0: |
1265 | // fake tty0 to make GPH SDL happy |
1266 | if (request == 0x4b46) // KDGKBENT |
1267 | return -1; |
1268 | return 0; |
dc90c02d |
1269 | } |
1270 | |
1271 | fail: |
7fd42181 |
1272 | err("bad/ni ioctl(%d, %08x, %p)\n", fd, request, argp); |
b4f4cb40 |
1273 | return -EINVAL; |
dc90c02d |
1274 | } |
1275 | |
7000b522 |
1276 | struct dev_fd_t emu_interesting_fds[] = { |
1277 | [IFD_SOUND] = { "/dev/dsp", -1, emu_sound_open }, |
1278 | { NULL, 0, NULL }, |
1279 | }; |
1280 | |
7fd42181 |
1281 | static const struct { |
1282 | const char *from; |
1283 | const char *to; |
1284 | } path_map[] = { |
158ddd8d |
1285 | { "/mnt/tmp", "./tmp" }, |
7fd42181 |
1286 | }; |
1287 | |
7fd42181 |
1288 | static const char *wrap_path(const char *path) |
1289 | { |
158ddd8d |
1290 | char *buff, *p; |
3d3fa63b |
1291 | size_t size; |
7fd42181 |
1292 | int i, len; |
1293 | |
1294 | // do only path mapping for now |
1295 | for (i = 0; i < ARRAY_SIZE(path_map); i++) { |
158ddd8d |
1296 | p = strstr(path, path_map[i].from); |
1297 | if (p != NULL) { |
3d3fa63b |
1298 | size = strlen(path) + strlen(path_map[i].to) + 1; |
1299 | buff = malloc(size); |
1300 | if (buff == NULL) |
1301 | break; |
158ddd8d |
1302 | len = p - path; |
1303 | strncpy(buff, path, len); |
1304 | snprintf(buff + len, size - len, "%s%s", path_map[i].to, |
1305 | path + len + strlen(path_map[i].from)); |
3d3fa63b |
1306 | dbg("mapped path \"%s\" -> \"%s\"\n", path, buff); |
1307 | return buff; |
7fd42181 |
1308 | } |
1309 | } |
1310 | |
1311 | return path; |
1312 | } |
1313 | |
7000b522 |
1314 | static void wrap_path_free(const char *w_path, const char *old_path) |
1315 | { |
1316 | if (w_path != old_path) |
1317 | free((void *)w_path); |
1318 | } |
1319 | |
7fd42181 |
1320 | void *emu_do_fopen(const char *path, const char *mode) |
1321 | { |
7000b522 |
1322 | const char *w_path; |
3d3fa63b |
1323 | FILE *ret; |
7000b522 |
1324 | |
1325 | w_path = wrap_path(path); |
3d3fa63b |
1326 | ret = fopen(w_path, mode); |
7000b522 |
1327 | wrap_path_free(w_path, path); |
1328 | |
3d3fa63b |
1329 | return ret; |
7fd42181 |
1330 | } |
1331 | |
3d3fa63b |
1332 | // FIXME: threads.. |
7fd42181 |
1333 | int emu_do_system(const char *command) |
1334 | { |
1335 | static char tmp_path[512]; |
158ddd8d |
1336 | int need_ginge = 0; |
3d3fa63b |
1337 | const char *p2; |
1338 | char *p; |
db9191ed |
1339 | int ret; |
7fd42181 |
1340 | |
1341 | if (command == NULL) |
1342 | return -1; |
1343 | |
158ddd8d |
1344 | for (p2 = command; *p2 && isspace(*p2); p2++) |
1345 | ; |
7fd42181 |
1346 | |
158ddd8d |
1347 | if (*p2 == '.') // relative path? |
1348 | need_ginge = 1; |
1349 | else if (*p2 == '/' && strncmp(p2, "/bin", 4) && strncmp(p2, "/lib", 4) |
1350 | && strncmp(p2, "/sbin", 4) && strncmp(p2, "/usr", 4)) |
1351 | // absolute path, but not a system command |
1352 | need_ginge = 1; |
7fd42181 |
1353 | |
3d3fa63b |
1354 | p2 = wrap_path(command); |
158ddd8d |
1355 | if (need_ginge) { |
1356 | make_local_path(tmp_path, sizeof(tmp_path), "ginge_prep"); |
1357 | p = tmp_path + strlen(tmp_path); |
1358 | |
1359 | snprintf(p, sizeof(tmp_path) - (p - tmp_path), " --nomenu %s", p2); |
1360 | } |
1361 | else |
1362 | snprintf(tmp_path, sizeof(tmp_path), "%s", p2); |
7000b522 |
1363 | wrap_path_free(p2, command); |
3d3fa63b |
1364 | |
7fd42181 |
1365 | dbg("system: \"%s\"\n", tmp_path); |
db9191ed |
1366 | |
1367 | // the app might want the screen too.. |
1368 | fb_thread_pause(); |
1369 | ret = system(tmp_path); |
1370 | fb_thread_resume(); |
1371 | return ret; |
7fd42181 |
1372 | } |
1373 | |
78684356 |
1374 | long emu_do_execve(const char *filename, char * const argv[], |
1375 | char * const envp[]) |
7000b522 |
1376 | { |
1377 | const char **new_argv; |
1378 | char *prep_path; |
78684356 |
1379 | int i, argc; |
1380 | long ret; |
7000b522 |
1381 | |
1382 | if (filename == NULL) |
1383 | return -1; |
1384 | |
78684356 |
1385 | if (strstr(filename, "gp2xmenu") != NULL) |
1386 | host_forced_exit(0); |
7000b522 |
1387 | |
1388 | for (i = 0; argv[i] != NULL; i++) |
1389 | ; |
1390 | argc = i + 1; |
1391 | |
1392 | new_argv = calloc(argc + 2, sizeof(new_argv[0])); |
1393 | if (new_argv == NULL) |
1394 | return -1; |
1395 | |
1396 | prep_path = malloc(512); |
1397 | if (prep_path == NULL) |
1398 | return -1; |
1399 | |
1400 | make_local_path(prep_path, 512, "ginge_prep"); |
1401 | new_argv[0] = prep_path; |
1402 | new_argv[1] = "--nomenu"; |
1403 | new_argv[2] = wrap_path(filename); |
1404 | |
1405 | if (argv[0] != NULL) |
1406 | for (i = 1; argv[i] != NULL; i++) |
1407 | new_argv[i + 2] = argv[i]; |
1408 | |
1409 | dbg("execve \"%s\" %s \"%s\"\n", new_argv[0], new_argv[1], new_argv[2]); |
1410 | ret = execve(new_argv[0], (char **)new_argv, envp); |
78684356 |
1411 | err("execve(%s): %ld\n", new_argv[0], ret); |
7000b522 |
1412 | return ret; |
1413 | } |
1414 | |
499bf01c |
1415 | // vim:shiftwidth=2:expandtab |