| 1 | /* |
| 2 | * GINGE - GINGE Is Not Gp2x Emulator |
| 3 | * (C) notaz, 2010-2011,2016 |
| 4 | * |
| 5 | * This work is licensed under the MAME license, see COPYING file for details. |
| 6 | */ |
| 7 | // a "gentle" reminder |
| 8 | #ifdef __ARM_EABI__ |
| 9 | #error loader is meant to be OABI! |
| 10 | #endif |
| 11 | #include <stdio.h> |
| 12 | #include <stdlib.h> |
| 13 | #include <string.h> |
| 14 | #include <alloca.h> |
| 15 | #include <ctype.h> |
| 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> |
| 24 | #include <errno.h> |
| 25 | #include <time.h> |
| 26 | #include <sched.h> |
| 27 | #include <sys/resource.h> |
| 28 | #include <sys/ioctl.h> |
| 29 | #include <sys/syscall.h> |
| 30 | #include <linux/soundcard.h> |
| 31 | #include <linux/fb.h> |
| 32 | #include <linux/futex.h> |
| 33 | |
| 34 | #include "header.h" |
| 35 | #include "../common/host_fb.h" |
| 36 | #include "../common/cmn.h" |
| 37 | #include "syscalls.h" |
| 38 | #include "realfuncs.h" |
| 39 | #include "llibc.h" |
| 40 | |
| 41 | #if (DBG & 2) && !(DBG & 4) |
| 42 | #define LOG_IO_UNK |
| 43 | #endif |
| 44 | #if (DBG & 4) |
| 45 | #define LOG_IO |
| 46 | #endif |
| 47 | //#define LOG_SEGV |
| 48 | |
| 49 | #ifdef LOG_IO |
| 50 | #define iolog log_io |
| 51 | #else |
| 52 | #define iolog(...) |
| 53 | #endif |
| 54 | |
| 55 | #ifdef LOG_IO_UNK |
| 56 | #define iolog_unh log_io |
| 57 | #else |
| 58 | #define iolog_unh(...) |
| 59 | #endif |
| 60 | |
| 61 | #ifdef LOG_SEGV |
| 62 | #define segvlog g_printf |
| 63 | #else |
| 64 | #define segvlog(...) |
| 65 | #endif |
| 66 | |
| 67 | #if defined(LOG_IO) || defined(LOG_IO_UNK) |
| 68 | #include "mmsp2-regs.h" |
| 69 | #endif |
| 70 | |
| 71 | typedef unsigned long long u64; |
| 72 | typedef unsigned int u32; |
| 73 | typedef unsigned short u16; |
| 74 | typedef unsigned char u8; |
| 75 | |
| 76 | #define THREAD_STACK_SIZE 0x200000 |
| 77 | |
| 78 | static int fb_sync_thread_paused; |
| 79 | static int fb_sync_thread_futex; |
| 80 | |
| 81 | static int emu_is_dl; |
| 82 | static int emu_force_snd_frag; |
| 83 | |
| 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 | |
| 103 | #define SRCCTRL_INVIDEO (1 << 8) |
| 104 | #define SRCCTRL_SRCENB (1 << 7) |
| 105 | #define CTRL_TRANSPARENCYENB (1 << 11) |
| 106 | |
| 107 | static struct { |
| 108 | // mmsp2 |
| 109 | u16 mlc_stl_cntl; |
| 110 | union { |
| 111 | u32 mlc_stl_adr; // mlcaddress for pollux |
| 112 | struct { |
| 113 | u16 mlc_stl_adrl; |
| 114 | u16 mlc_stl_adrh; |
| 115 | }; |
| 116 | }; |
| 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 | |
| 123 | // pollux |
| 124 | u32 mlccontrol; |
| 125 | u16 mlcpalette[256]; |
| 126 | |
| 127 | // state |
| 128 | void *umem; |
| 129 | u32 old_mlc_stl_adr; |
| 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; |
| 137 | } mmsp2; |
| 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 | }; |
| 143 | |
| 144 | |
| 145 | #if defined(LOG_IO) || defined(LOG_IO_UNK) |
| 146 | static void log_io(const char *pfx, u32 a, u32 d, int size) |
| 147 | { |
| 148 | const char *fmt, *reg = ""; |
| 149 | switch (size) { |
| 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; |
| 153 | } |
| 154 | |
| 155 | if ((a & ~0xffff) == 0x7f000000) |
| 156 | reg = regnames[a & 0xffff]; |
| 157 | |
| 158 | g_printf(fmt, pfx, a, d, reg); |
| 159 | } |
| 160 | #endif |
| 161 | |
| 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++) { \ |
| 199 | g_printf("%08x ", *r); \ |
| 200 | if ((i & 3) == 3) \ |
| 201 | g_printf("\n"); \ |
| 202 | } \ |
| 203 | } |
| 204 | |
| 205 | static void *uppermem_lookup(u32 addr, u8 **mem_end) |
| 206 | { |
| 207 | // XXX: maybe support mirroring? |
| 208 | if ((addr & 0xfe000000) != 0x02000000) |
| 209 | return NULL; |
| 210 | |
| 211 | *mem_end = (u8 *)mmsp2.umem + 0x02000000; |
| 212 | return (u8 *)mmsp2.umem - 0x02000000 + addr; |
| 213 | } |
| 214 | |
| 215 | static void blitter_do(void) |
| 216 | { |
| 217 | u8 *dst, *dste, *src = NULL, *srce = NULL; |
| 218 | int w, h, sstrd, dstrd; |
| 219 | int to_screen = 0; |
| 220 | u32 bpp, addr; |
| 221 | |
| 222 | w = blitter.size & 0x7ff; |
| 223 | h = (blitter.size >> 16) & 0x7ff; |
| 224 | sstrd = blitter.srcstride; |
| 225 | dstrd = blitter.dststride; |
| 226 | |
| 227 | // XXX: need to confirm this.. |
| 228 | addr = (blitter.dstaddr & ~3) | ((blitter.dstctrl & 0x1f) >> 3); |
| 229 | |
| 230 | // use dst bpp.. How does it do blits with different src bpp? |
| 231 | bpp = (blitter.dstctrl & 0x20) ? 16 : 8; |
| 232 | |
| 233 | // maybe the screen? |
| 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) |
| 237 | to_screen = 1; |
| 238 | |
| 239 | dst = uppermem_lookup(addr, &dste); |
| 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); |
| 247 | src = uppermem_lookup(addr, &srce); |
| 248 | if (src == NULL) |
| 249 | goto bad_blit; |
| 250 | |
| 251 | if (src + sstrd * h > srce) { |
| 252 | err("blit %08x->%08x %dx%d did not fit src\n", |
| 253 | blitter.srcaddr, blitter.dstaddr, w, h); |
| 254 | h = (srce - src) / sstrd; |
| 255 | } |
| 256 | } |
| 257 | |
| 258 | if (dst == NULL) |
| 259 | goto bad_blit; |
| 260 | |
| 261 | if (dst + dstrd * h > dste) { |
| 262 | err("blit %08x->%08x %dx%d did not fit dst\n", |
| 263 | blitter.srcaddr, blitter.dstaddr, w, h); |
| 264 | h = (dste - dst) / dstrd; |
| 265 | } |
| 266 | |
| 267 | if (src != NULL) { |
| 268 | // copy |
| 269 | if (bpp == 16 && (blitter.ctrl & CTRL_TRANSPARENCYENB)) { |
| 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) |
| 276 | memcpy(dst, src, w * bpp / 8); |
| 277 | } |
| 278 | } |
| 279 | else { |
| 280 | // fill. Assume the pattern is cleared and bg color is used |
| 281 | u32 bgc = blitter.patbackcolor & 0xffff; |
| 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 | } |
| 290 | } |
| 291 | |
| 292 | if (to_screen) { |
| 293 | fb_sync_thread_futex = 1; |
| 294 | g_futex_raw(&fb_sync_thread_futex, FUTEX_WAKE, 1, NULL); |
| 295 | } |
| 296 | return; |
| 297 | |
| 298 | bad_blit: |
| 299 | err("blit %08x->%08x %dx%d translated to %p->%p\n", |
| 300 | blitter.srcaddr, blitter.dstaddr, w, h, src, dst); |
| 301 | dump_blitter(); |
| 302 | } |
| 303 | |
| 304 | // FIXME: pass real dimensions to blitters |
| 305 | static void mlc_flip(void *src, int bpp, int stride) |
| 306 | { |
| 307 | static int old_bpp; |
| 308 | |
| 309 | // only pass pal to host if it's dirty |
| 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; |
| 316 | } |
| 317 | |
| 318 | if (bpp != old_bpp) { |
| 319 | host_video_change_bpp(bpp); |
| 320 | old_bpp = bpp; |
| 321 | } |
| 322 | |
| 323 | switch (bpp) { |
| 324 | case 4: |
| 325 | host_video_blit4(src, 320, 240, stride); |
| 326 | break; |
| 327 | |
| 328 | case 8: |
| 329 | host_video_blit8(src, 320, 240, stride); |
| 330 | break; |
| 331 | |
| 332 | case 16: |
| 333 | host_video_blit16(src, 320, 240, stride); |
| 334 | break; |
| 335 | |
| 336 | case 24: |
| 337 | // TODO |
| 338 | break; |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | static void *fb_sync_thread(void *arg) |
| 343 | { |
| 344 | unsigned long sigmask[2] = { ~0ul, ~0ul }; |
| 345 | struct timespec ts = { 0, 0 }; |
| 346 | int invalid_fb_addr = 1; |
| 347 | int manual_refresh = 0; |
| 348 | int frame_counter = 0; |
| 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)); |
| 355 | |
| 356 | //ret = setpriority(PRIO_PROCESS, 0, -1); |
| 357 | //log("setpriority %d\n", ret); |
| 358 | |
| 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); |
| 362 | |
| 363 | while (1) { |
| 364 | u8 *gp2x_fb, *gp2x_fb_end; |
| 365 | |
| 366 | wait_ret = g_futex_raw(&fb_sync_thread_futex, FUTEX_WAIT, 0, &ts); |
| 367 | |
| 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); |
| 376 | sleep(1); |
| 377 | goto check_keys; |
| 378 | } |
| 379 | if (fb_sync_thread_paused) { |
| 380 | ts.tv_nsec = 100000000; |
| 381 | goto check_keys; |
| 382 | } |
| 383 | |
| 384 | if (wait_ret == 0) { |
| 385 | ts.tv_nsec = 50000000; |
| 386 | manual_refresh++; |
| 387 | if (manual_refresh == 2) |
| 388 | dbg("fb_thread: switch to manual refresh\n"); |
| 389 | } else { |
| 390 | ts.tv_nsec = 16666667; |
| 391 | if (manual_refresh > 1) |
| 392 | dbg("fb_thread: switch to auto refresh\n"); |
| 393 | manual_refresh = 0; |
| 394 | } |
| 395 | |
| 396 | gp2x_fb = uppermem_lookup(mmsp2.mlc_stl_adr, &gp2x_fb_end); |
| 397 | if (gp2x_fb == NULL || gp2x_fb + 320*240 * mmsp2.v.bpp / 8 > gp2x_fb_end) { |
| 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 | |
| 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(); |
| 416 | } |
| 417 | } |
| 418 | |
| 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 | |
| 432 | static u32 xread32_io_cmn(u32 a, u32 *handled) |
| 433 | { |
| 434 | struct timespec ts; |
| 435 | u32 d = 0; |
| 436 | |
| 437 | *handled = 1; |
| 438 | switch (a) { |
| 439 | // Wiz stuff |
| 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; |
| 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 |
| 457 | d = (pollux.btn_state >> 1) & 0x0100; |
| 458 | d |= (pollux.btn_state << 1) & 0x0200; |
| 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 | |
| 483 | static u32 xread8(u32 a) |
| 484 | { |
| 485 | iolog("r8 ", a, 0, 8); |
| 486 | iolog_unh("r8 ", a, 0, 8); |
| 487 | return 0; |
| 488 | } |
| 489 | |
| 490 | static u32 xread16(u32 a) |
| 491 | { |
| 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: |
| 503 | // 0000 P000 VuVd00 0000 YXBA RLSeSt 0Ri0D 0Le0U |
| 504 | // | GPIOD |GPIOC[8:15]|GPIOM[0:7] | |
| 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; |
| 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; |
| 532 | case 0x28da: |
| 533 | d = mmsp2.mlc_stl_cntl; |
| 534 | break; |
| 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; |
| 543 | case 0x2958: |
| 544 | d = mmsp2.mlc_stl_pallt_a; |
| 545 | break; |
| 546 | |
| 547 | default: |
| 548 | d = xread32_io_cmn(a_, &t); |
| 549 | if (!t) |
| 550 | goto unk; |
| 551 | if (!(a_ & 2)) |
| 552 | d >>= 16; |
| 553 | break; |
| 554 | } |
| 555 | goto out; |
| 556 | } |
| 557 | |
| 558 | unk: |
| 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; |
| 570 | } |
| 571 | |
| 572 | static u32 xread32(u32 a) |
| 573 | { |
| 574 | u32 d = 0; |
| 575 | if ((a & 0xfff00000) == 0x7f000000) { |
| 576 | u32 a_ = a & 0xffff; |
| 577 | struct timespec ts; |
| 578 | u64 t64; |
| 579 | u32 t; |
| 580 | |
| 581 | switch (a_) { |
| 582 | case 0x0a00: // TCOUNT, 1/7372800s |
| 583 | g_clock_gettime_raw(CLOCK_REALTIME, &ts); |
| 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; |
| 588 | break; |
| 589 | |
| 590 | default: |
| 591 | d = xread32_io_cmn(a_, &t); |
| 592 | if (!t) |
| 593 | goto unh; |
| 594 | break; |
| 595 | } |
| 596 | goto out; |
| 597 | } |
| 598 | if ((a & 0xfff00000) == 0x7f100000) { |
| 599 | u32 *bl = &blitter.dstctrl; |
| 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 | } |
| 607 | } |
| 608 | |
| 609 | unh: |
| 610 | iolog_unh("r32", a, d, 32); |
| 611 | |
| 612 | out: |
| 613 | iolog("r32", a, d, 32); |
| 614 | return d; |
| 615 | } |
| 616 | |
| 617 | static void xwrite8(u32 a, u32 d) |
| 618 | { |
| 619 | iolog("w8 ", a, d, 8); |
| 620 | iolog_unh("w8 ", a, d, 8); |
| 621 | } |
| 622 | |
| 623 | static void xwrite16(u32 a, u32 d) |
| 624 | { |
| 625 | iolog("w16", a, d, 16); |
| 626 | if ((a & 0xfff00000) == 0x7f000000) { |
| 627 | u32 a_ = a & 0xffff; |
| 628 | switch (a_) { |
| 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; |
| 648 | if (mmsp2.mlc_stl_adr != mmsp2.old_mlc_stl_adr) { |
| 649 | // ask for refresh |
| 650 | fb_sync_thread_futex = 1; |
| 651 | g_futex_raw(&fb_sync_thread_futex, FUTEX_WAKE, 1, NULL); |
| 652 | } |
| 653 | mmsp2.old_mlc_stl_adr = mmsp2.mlc_stl_adr; |
| 654 | return; |
| 655 | case 0x2958: // MLC_STL_PALLT_A |
| 656 | mmsp2.mlc_stl_pallt_a = d & 0x1ff; |
| 657 | return; |
| 658 | case 0x295a: // MLC_STL_PALLT_D |
| 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; |
| 663 | } |
| 664 | } |
| 665 | iolog_unh("w16", a, d, 16); |
| 666 | } |
| 667 | |
| 668 | static void xwrite32(u32 a, u32 d) |
| 669 | { |
| 670 | iolog("w32", a, d, 32); |
| 671 | |
| 672 | if ((a & 0xfff00000) == 0x7f000000) { |
| 673 | u32 a_ = a & 0xffff; |
| 674 | switch (a_) { |
| 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; |
| 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; |
| 701 | if (d != mmsp2.old_mlc_stl_adr) { |
| 702 | // ask for refresh |
| 703 | fb_sync_thread_futex = 1; |
| 704 | g_futex_raw(&fb_sync_thread_futex, FUTEX_WAKE, 1, NULL); |
| 705 | } |
| 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 | } |
| 715 | if ((a & 0xfff00000) == 0x7f100000) { |
| 716 | u32 *bl = &blitter.dstctrl; |
| 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 | } |
| 724 | } |
| 725 | iolog_unh("w32", a, d, 32); |
| 726 | } |
| 727 | |
| 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 | |
| 738 | struct op_linkpage { |
| 739 | u32 *code_ptr; |
| 740 | void (*handler)(struct op_context *op_ctx); |
| 741 | u32 code[0]; |
| 742 | }; |
| 743 | |
| 744 | struct op_stackframe { |
| 745 | u32 saved_regs[15]; |
| 746 | u32 cpsr; |
| 747 | }; |
| 748 | |
| 749 | static struct op_linkpage *g_linkpages[2]; |
| 750 | static int g_linkpage_count; |
| 751 | |
| 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 | |
| 763 | #define BIT_SET(v, b) (v & (1 << (b))) |
| 764 | |
| 765 | void emu_handle_op(struct op_context *op_ctx, struct op_stackframe *sframe) |
| 766 | { |
| 767 | u32 *regs = sframe->saved_regs; |
| 768 | u32 cpsr = sframe->cpsr; |
| 769 | u32 op = op_ctx->op; |
| 770 | u32 t, shift, ret, addr; |
| 771 | int i, rn, rd, cond; |
| 772 | |
| 773 | cond = (op & 0xf0000000) >> 28; |
| 774 | rd = (op & 0x0000f000) >> 12; |
| 775 | rn = (op & 0x000f0000) >> 16; |
| 776 | |
| 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 | } |
| 791 | |
| 792 | if ((op & 0x0f200090) == 0x01000090) { // AM3: LDRH, STRH |
| 793 | if (!BIT_SET(op, 5)) // !H |
| 794 | goto unhandled; |
| 795 | if (BIT_SET(op, 6) && !BIT_SET(op, 20)) // S && !L |
| 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); |
| 809 | if (BIT_SET(op, 6)) { // S |
| 810 | ret <<= 16; |
| 811 | ret = (signed int)ret >> 16; |
| 812 | } |
| 813 | regs[rd] = ret; |
| 814 | } |
| 815 | else |
| 816 | xwrite16(addr, regs[rd]); |
| 817 | } |
| 818 | else if ((op & 0x0c000000) == 0x04000000) { // load/store word/byte |
| 819 | if (BIT_SET(op, 21)) |
| 820 | goto unhandled; // unprivileged |
| 821 | if (BIT_SET(op, 25)) { // reg offs |
| 822 | if (BIT_SET(op, 4)) |
| 823 | goto unhandled; // nah it's media |
| 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; |
| 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 |
| 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 | |
| 863 | #if 0 |
| 864 | if (addr != addr_check) { |
| 865 | fprintf(stderr, "bad calculated addr: %08x vs %08x\n", addr, addr_check); |
| 866 | abort(); |
| 867 | } |
| 868 | #endif |
| 869 | return; |
| 870 | |
| 871 | unhandled: |
| 872 | err("unhandled IO op %08x @ %08x\n", op, op_ctx->pc); |
| 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); |
| 876 | abort(); |
| 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) { |
| 889 | err("linkpage too far: %d\n", lp_offs); |
| 890 | abort(); |
| 891 | } |
| 892 | |
| 893 | return (u << 23) | lp_offs; |
| 894 | } |
| 895 | |
| 896 | static u32 make_jmp(u32 *pc, u32 *target, int bl) |
| 897 | { |
| 898 | int jmp_val; |
| 899 | |
| 900 | jmp_val = target - pc - 2; |
| 901 | if (jmp_val < (int)0xff800000 || jmp_val > 0x007fffff) { |
| 902 | err("jump out of range (%p -> %p)\n", pc, target); |
| 903 | abort(); |
| 904 | } |
| 905 | |
| 906 | return 0xea000000 | (bl << 24) | (jmp_val & 0x00ffffff); |
| 907 | } |
| 908 | |
| 909 | static void emit_op(struct op_linkpage *linkpage, u32 op) |
| 910 | { |
| 911 | *linkpage->code_ptr++ = op; |
| 912 | } |
| 913 | |
| 914 | static void emit_op_io(struct op_linkpage *linkpage, |
| 915 | u32 op, u32 *target) |
| 916 | { |
| 917 | op |= make_offset12(linkpage->code_ptr, target); |
| 918 | emit_op(linkpage, op); |
| 919 | } |
| 920 | |
| 921 | static void init_linkpage(struct op_linkpage *linkpage) |
| 922 | { |
| 923 | linkpage->handler = emu_call_handle_op; |
| 924 | linkpage->code_ptr = linkpage->code; |
| 925 | } |
| 926 | |
| 927 | static void segv_sigaction(int num, siginfo_t *info, void *ctx) |
| 928 | { |
| 929 | extern char _init, _end; |
| 930 | struct ucontext *context = ctx; |
| 931 | u32 *regs = (u32 *)&context->uc_mcontext.arm_r0; |
| 932 | u32 *pc = (u32 *)regs[15]; |
| 933 | u32 self_start, self_end; |
| 934 | struct op_linkpage *lp = NULL; |
| 935 | struct op_context *op_ctx; |
| 936 | int i, ret, lp_i, lp_size; |
| 937 | |
| 938 | self_start = (u32)&_init & ~0xfff; |
| 939 | self_end = (u32)&_end; |
| 940 | |
| 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 |
| 944 | { |
| 945 | // real crash - time to die |
| 946 | err("segv %d %p @ %08x\n", info->si_code, info->si_addr, regs[15]); |
| 947 | for (i = 0; i < 8; i++) |
| 948 | dbg(" r%d=%08x r%-2d=%08x\n", i, regs[i], i+8, regs[i+8]); |
| 949 | signal(num, SIG_DFL); |
| 950 | raise(num); |
| 951 | return; |
| 952 | } |
| 953 | segvlog("segv %d %p @ %08x\n", info->si_code, info->si_addr, regs[15]); |
| 954 | |
| 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 | |
| 977 | // spit PC and op |
| 978 | op_ctx = (void *)lp->code_ptr; |
| 979 | op_ctx->pc = (u32)pc; |
| 980 | op_ctx->op = *pc; |
| 981 | lp->code_ptr = &op_ctx->code[0]; |
| 982 | |
| 983 | // emit jump to code ptr |
| 984 | *pc = make_jmp(pc, lp->code_ptr, 0); |
| 985 | |
| 986 | // generate code: |
| 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> |
| 994 | |
| 995 | // sync caches |
| 996 | sys_cacheflush(pc, pc + 1); |
| 997 | sys_cacheflush(lp, lp->code_ptr); |
| 998 | |
| 999 | lp_size = (char *)lp->code_ptr - (char *)lp; |
| 1000 | segvlog("code #%d %d/%d\n", g_linkpage_count, lp_size, LINKPAGE_SIZE); |
| 1001 | |
| 1002 | if (lp_size + 14*4 > LINKPAGE_SIZE) { |
| 1003 | g_linkpage_count++; |
| 1004 | if (g_linkpage_count >= LINKPAGE_COUNT) { |
| 1005 | err("too many linkpages needed\n"); |
| 1006 | abort(); |
| 1007 | } |
| 1008 | g_linkpages[lp_i] = (void *)((char *)g_linkpages[lp_i] + LINKPAGE_SIZE); |
| 1009 | init_linkpage(g_linkpages[lp_i]); |
| 1010 | } |
| 1011 | //handle_op(regs[15], op, regs, (u32)info->si_addr); |
| 1012 | //regs[15] += 4; |
| 1013 | } |
| 1014 | |
| 1015 | void emu_init(void *map_bottom[2], int is_dl) |
| 1016 | { |
| 1017 | sigaction_t segv_action = { |
| 1018 | .sa_sigaction = segv_sigaction, |
| 1019 | .sa_flags = SA_SIGINFO, |
| 1020 | }; |
| 1021 | const char *var; |
| 1022 | void *pret; |
| 1023 | int i, ret; |
| 1024 | |
| 1025 | #ifdef PND |
| 1026 | if (geteuid() == 0) { |
| 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"); |
| 1029 | exit(1); |
| 1030 | } |
| 1031 | #endif |
| 1032 | |
| 1033 | emu_is_dl = is_dl; |
| 1034 | |
| 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 | |
| 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]); |
| 1056 | } |
| 1057 | |
| 1058 | // host stuff |
| 1059 | ret = host_init(); |
| 1060 | if (ret != 0) { |
| 1061 | err("can't init host\n"); |
| 1062 | exit(1); |
| 1063 | } |
| 1064 | |
| 1065 | ret = host_video_init(NULL, 0); |
| 1066 | if (ret != 0) { |
| 1067 | err("can't init host video\n"); |
| 1068 | exit(1); |
| 1069 | } |
| 1070 | |
| 1071 | // TODO: check if this really fails on Wiz.. |
| 1072 | mmsp2.umem = mmap(NULL, 0x2000000, PROT_READ|PROT_WRITE|PROT_EXEC, |
| 1073 | MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); |
| 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 | } |
| 1080 | #endif |
| 1081 | if (mmsp2.umem == MAP_FAILED) { |
| 1082 | perror(PFX "mmap upper mem"); |
| 1083 | exit(1); |
| 1084 | } |
| 1085 | |
| 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"); |
| 1099 | exit(1); |
| 1100 | } |
| 1101 | g_futex_raw(&fb_sync_thread_futex, FUTEX_WAIT, 1, NULL); |
| 1102 | |
| 1103 | // defaults |
| 1104 | mmsp2.mlc_stl_adr = 0x03101000; // fb2 is at 0x03381000 |
| 1105 | mmsp2.mlc_stl_cntl = 0x4ab; // 16bpp, region 1 active |
| 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; |
| 1111 | |
| 1112 | sigemptyset(&segv_action.sa_mask); |
| 1113 | sigaction(SIGSEGV, &segv_action, NULL); |
| 1114 | } |
| 1115 | |
| 1116 | static long emu_mmap_dev(unsigned int length, int prot, int flags, unsigned int offset) |
| 1117 | { |
| 1118 | u8 *umem, *umem_end; |
| 1119 | |
| 1120 | // SoC regs |
| 1121 | if ((offset & ~0x1ffff) == 0xc0000000) { |
| 1122 | return g_mmap2_raw((void *)0x7f000000, length, PROT_NONE, |
| 1123 | MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED|MAP_NORESERVE, -1, 0); |
| 1124 | } |
| 1125 | // MMSP2 blitter |
| 1126 | if ((offset & ~0xffff) == 0xe0020000) { |
| 1127 | return g_mmap2_raw((void *)0x7f100000, length, PROT_NONE, |
| 1128 | MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED|MAP_NORESERVE, -1, 0); |
| 1129 | } |
| 1130 | // upper mem |
| 1131 | if ((offset & 0xfe000000) != 0x02000000) { |
| 1132 | err("unexpected devmem mmap @ %08x\n", offset); |
| 1133 | return -EINVAL; |
| 1134 | } |
| 1135 | |
| 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 | |
| 1141 | dbg("upper mem @ %08x %x = %p\n", offset, length, umem); |
| 1142 | return (long)umem; |
| 1143 | } |
| 1144 | |
| 1145 | long emu_do_mmap(unsigned int length, int prot, int flags, int fd, |
| 1146 | unsigned int offset) |
| 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 | |
| 1157 | err("bad/ni mmap(?, %d, %x, %x, %d, %08x)\n", length, prot, flags, fd, offset); |
| 1158 | return -EINVAL; |
| 1159 | } |
| 1160 | |
| 1161 | long emu_do_munmap(void *addr, unsigned int length) |
| 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 | |
| 1174 | static void emu_sound_open(int fd) |
| 1175 | { |
| 1176 | int ret; |
| 1177 | |
| 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 | } |
| 1183 | } |
| 1184 | |
| 1185 | static long emu_sound_ioctl(int fd, int request, void *argp) |
| 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. */ |
| 1199 | switch(request) { |
| 1200 | case SNDCTL_DSP_SETFRAGMENT: { |
| 1201 | int bsize, frag, frag_cnt; |
| 1202 | long ret; |
| 1203 | |
| 1204 | if (arg == NULL) |
| 1205 | break; |
| 1206 | |
| 1207 | frag = *arg & 0xffff; |
| 1208 | frag_cnt = *arg >> 16; |
| 1209 | bsize = frag_cnt << frag; |
| 1210 | if (frag < 8 || bsize < 4096*4 || bsize > 4096*4*2) { |
| 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 | |
| 1224 | frag_cnt = 8; |
| 1225 | } |
| 1226 | |
| 1227 | frag |= frag_cnt << 16; |
| 1228 | ret = g_ioctl_raw(fd, SNDCTL_DSP_SETFRAGMENT, &frag); |
| 1229 | if (ret != 0) |
| 1230 | err("snd ioctl SETFRAGMENT %08x: %ld\n", frag, ret); |
| 1231 | // indicate success even if we fail (because of ALSA mostly), |
| 1232 | // things like MikMod will bail out otherwise. |
| 1233 | return 0; |
| 1234 | } |
| 1235 | case SNDCTL_DSP_SYNC: |
| 1236 | // Franxis tends to use sync/write loops, bad idea under ALSA |
| 1237 | return 0; |
| 1238 | default: |
| 1239 | break; |
| 1240 | } |
| 1241 | |
| 1242 | return g_ioctl_raw(fd, request, argp); |
| 1243 | } |
| 1244 | |
| 1245 | long emu_do_ioctl(int fd, int request, void *argp) |
| 1246 | { |
| 1247 | if (fd == emu_interesting_fds[IFD_SOUND].fd) |
| 1248 | return emu_sound_ioctl(fd, request, argp); |
| 1249 | |
| 1250 | switch (fd) { |
| 1251 | /* *********************** */ |
| 1252 | case FAKEDEV_FB0: |
| 1253 | case FAKEDEV_FB1: |
| 1254 | if (argp == NULL) |
| 1255 | goto fail; |
| 1256 | |
| 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; |
| 1265 | fix->visual = FB_VISUAL_TRUECOLOR; |
| 1266 | fix->line_length = 320*2; |
| 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; |
| 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, }; |
| 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 | } |
| 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 | } |
| 1299 | } |
| 1300 | |
| 1301 | /* *********************** */ |
| 1302 | case FAKEDEV_TTY: |
| 1303 | case FAKEDEV_TTY0: |
| 1304 | // fake tty0 to make GPH SDL happy |
| 1305 | if (request == 0x4b46) // KDGKBENT |
| 1306 | return -1; |
| 1307 | return 0; |
| 1308 | } |
| 1309 | |
| 1310 | fail: |
| 1311 | err("bad/ni ioctl(%d, %08x, %p)\n", fd, request, argp); |
| 1312 | return -EINVAL; |
| 1313 | } |
| 1314 | |
| 1315 | static const char wm97xx_p[] = |
| 1316 | "5507 0 -831476 0 -4218 16450692 65536"; // from 4.0 fw |
| 1317 | |
| 1318 | long emu_do_read(int fd, void *buf, int count) |
| 1319 | { |
| 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) { |
| 1341 | wm97xx.pressure = 0x8001; // TODO: check the real thing |
| 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: |
| 1360 | dbg("read(%d, %d)\n", fd, count); |
| 1361 | return -EINVAL; |
| 1362 | } |
| 1363 | return count; |
| 1364 | } |
| 1365 | |
| 1366 | struct dev_fd_t emu_interesting_fds[] = { |
| 1367 | [IFD_SOUND] = { "/dev/dsp", -1, emu_sound_open }, |
| 1368 | { NULL, 0, NULL }, |
| 1369 | }; |
| 1370 | |
| 1371 | static const struct { |
| 1372 | const char *from; |
| 1373 | const char *to; |
| 1374 | } path_map[] = { |
| 1375 | { "/mnt/tmp", "./tmp" }, |
| 1376 | { "/mnt/sd", "./mntsd" }, |
| 1377 | }; |
| 1378 | |
| 1379 | const char *emu_wrap_path(const char *path) |
| 1380 | { |
| 1381 | char *buff, *p; |
| 1382 | size_t size; |
| 1383 | int i, len; |
| 1384 | long ret; |
| 1385 | |
| 1386 | // do only path mapping for now |
| 1387 | for (i = 0; i < ARRAY_SIZE(path_map); i++) { |
| 1388 | p = strstr(path, path_map[i].from); |
| 1389 | if (p != NULL) { |
| 1390 | size = strlen(path) + strlen(path_map[i].to) + 1; |
| 1391 | buff = malloc(size); |
| 1392 | if (buff == NULL) |
| 1393 | break; |
| 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)); |
| 1398 | dbg("mapped path \"%s\" -> \"%s\"\n", path, buff); |
| 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 | |
| 1404 | return buff; |
| 1405 | } |
| 1406 | } |
| 1407 | |
| 1408 | return path; |
| 1409 | } |
| 1410 | |
| 1411 | void emu_wrap_path_free(const char *w_path, const char *old_path) |
| 1412 | { |
| 1413 | if (w_path != old_path) |
| 1414 | free((void *)w_path); |
| 1415 | } |
| 1416 | |
| 1417 | void *emu_do_fopen(const char *path, const char *mode) |
| 1418 | { |
| 1419 | const char *w_path; |
| 1420 | FILE *ret; |
| 1421 | |
| 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 | } |
| 1439 | |
| 1440 | return ret; |
| 1441 | } |
| 1442 | |
| 1443 | // FIXME: threads.. |
| 1444 | int emu_do_system(const char *command) |
| 1445 | { |
| 1446 | static char tmp_path[512]; |
| 1447 | int need_ginge = 0; |
| 1448 | const char *p2; |
| 1449 | char *p; |
| 1450 | int ret; |
| 1451 | |
| 1452 | if (command == NULL) |
| 1453 | return -1; |
| 1454 | |
| 1455 | for (p2 = command; *p2 && isspace(*p2); p2++) |
| 1456 | ; |
| 1457 | |
| 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; |
| 1464 | |
| 1465 | p2 = emu_wrap_path(command); |
| 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); |
| 1474 | emu_wrap_path_free(p2, command); |
| 1475 | |
| 1476 | dbg("system: \"%s\"\n", tmp_path); |
| 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; |
| 1483 | } |
| 1484 | |
| 1485 | long emu_do_execve(const char *filename, char * const argv[], |
| 1486 | char * const envp[]) |
| 1487 | { |
| 1488 | const char **new_argv; |
| 1489 | char *prep_path; |
| 1490 | int i, argc; |
| 1491 | long ret; |
| 1492 | |
| 1493 | if (filename == NULL) |
| 1494 | return -1; |
| 1495 | |
| 1496 | if (strstr(filename, "gp2xmenu") != NULL) |
| 1497 | host_forced_exit(0); |
| 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"; |
| 1514 | new_argv[2] = emu_wrap_path(filename); |
| 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); |
| 1522 | err("execve(%s): %ld\n", new_argv[0], ret); |
| 1523 | return ret; |
| 1524 | } |
| 1525 | |
| 1526 | // vim:shiftwidth=2:expandtab |