1 // vim:shiftwidth=2:expandtab
10 #include <sys/types.h>
13 #include <asm/ucontext.h>
17 #include <sys/resource.h>
18 #include <sys/ioctl.h>
19 #include <linux/soundcard.h>
23 #include "../common/host_fb.h"
24 #include "../common/cmn.h"
25 #include "sys_cacheflush.h"
26 #include "realfuncs.h"
43 #define iolog_unh log_io
45 #define iolog_unh(...)
49 #define segvlog printf
54 #if defined(LOG_IO) || defined(LOG_IO_UNK)
55 #include "mmsp2-regs.h"
58 typedef unsigned int u32;
59 typedef unsigned short u16;
60 typedef unsigned char u8;
62 static pthread_mutex_t fb_mutex = PTHREAD_MUTEX_INITIALIZER;
63 static pthread_cond_t fb_cond = PTHREAD_COND_INITIALIZER;
65 struct uppermem_block {
69 struct uppermem_block *next;
72 static struct uppermem_block *upper_mem;
93 #define SRCCTRL_INVIDEO (1 << 8)
94 #define SRCCTRL_SRCENB (1 << 7)
95 #define CTRL_TRANSPARENCYENB (1 << 11)
108 u16 mlc_stl_pallt_d[256*2];
109 u32 mlc_stl_pallt_d32[256];
115 u32 btn_state; // as seen through /dev/GPIO
119 static u16 *host_screen;
120 static int host_stride;
123 #if defined(LOG_IO) || defined(LOG_IO_UNK)
124 static void log_io(const char *pfx, u32 a, u32 d, int size)
126 const char *fmt, *reg = "";
128 case 8: fmt = "%s %08x %02x %s\n"; d &= 0xff; break;
129 case 32: fmt = "%s %08x %08x %s\n"; break;
130 default: fmt = "%s %08x %04x %s\n"; d &= 0xffff; break;
133 if ((a & ~0xffff) == 0x7f000000)
134 reg = regnames[a & 0xffff];
136 printf(fmt, pfx, a, d, reg);
140 static void memset16(void *dst, u32 pattern, int count)
145 d = (u16 *)((long)dst & ~1);
151 pattern |= pattern << 16;
158 *(u16 *)dl = pattern;
161 static void blt_tr(void *dst, void *src, u32 trc, int w)
163 u16 *d = (u16 *)((long)dst & ~1);
164 u16 *s = (u16 *)((long)src & ~1);
167 for (; w > 0; d++, s++, w--)
172 #define dump_blitter() \
174 u32 *r = &blitter.dstctrl; \
176 for (i = 0; i < 4*4; i++, r++) { \
177 printf("%08x ", *r); \
183 static void *uppermem_lookup(u32 addr, u8 **mem_end)
185 struct uppermem_block *ub;
187 for (ub = upper_mem; ub != NULL; ub = ub->next) {
188 if (ub->addr <= addr && addr < ub->addr + ub->size) {
189 *mem_end = (u8 *)ub->mem + ub->size;
190 return (u8 *)ub->mem + addr - ub->addr;
197 static void blitter_do(void)
199 u8 *dst, *dste, *src = NULL, *srce = NULL;
200 int w, h, sstrd, dstrd;
204 w = blitter.size & 0x7ff;
205 h = (blitter.size >> 16) & 0x7ff;
206 sstrd = blitter.srcstride;
207 dstrd = blitter.dststride;
209 // XXX: need to confirm this..
210 addr = (blitter.dstaddr & ~3) | ((blitter.dstctrl & 0x1f) >> 3);
212 // use dst bpp.. How does it do blits with different src bpp?
213 bpp = (blitter.dstctrl & 0x20) ? 16 : 8;
216 if (((w == 320 && h == 240) || // blit whole screen
217 (w * h >= 320*240/2)) && // ..or at least half of the area
218 mmsp2.mlc_stl_adr <= addr && addr < mmsp2.mlc_stl_adr + 320*240*2)
221 dst = uppermem_lookup(addr, &dste);
223 // XXX: assume fill if no SRCENB, but it could be pattern blit..
224 if (blitter.srcctrl & SRCCTRL_SRCENB) {
225 if (!(blitter.srcctrl & SRCCTRL_INVIDEO))
228 addr = (blitter.srcaddr & ~3) | ((blitter.srcctrl & 0x1f) >> 3);
229 src = uppermem_lookup(addr, &srce);
233 if (src + sstrd * h > srce) {
234 err("blit %08x->%08x %dx%d did not fit src\n",
235 blitter.srcaddr, blitter.dstaddr, w, h);
236 h = (srce - src) / sstrd;
243 if (dst + dstrd * h > dste) {
244 err("blit %08x->%08x %dx%d did not fit dst\n",
245 blitter.srcaddr, blitter.dstaddr, w, h);
246 h = (dste - dst) / dstrd;
251 if (bpp == 16 && (blitter.ctrl & CTRL_TRANSPARENCYENB)) {
252 u32 trc = blitter.ctrl >> 16;
253 for (; h > 0; h--, dst += dstrd, src += sstrd)
254 blt_tr(dst, src, trc, w);
257 for (; h > 0; h--, dst += dstrd, src += sstrd)
258 memcpy(dst, src, w * bpp / 8);
262 // fill. Assume the pattern is cleared and bg color is used
263 u32 bgc = blitter.patbackcolor & 0xffff;
265 for (; h > 0; h--, dst += dstrd)
266 memset16(dst, bgc, w);
269 for (; h > 0; h--, dst += dstrd)
270 memset(dst, bgc, w); // bgc?
275 pthread_cond_signal(&fb_cond);
279 err("blit %08x->%08x %dx%d translated to %p->%p\n",
280 blitter.srcaddr, blitter.dstaddr, w, h, src, dst);
284 // TODO: hw scaler stuff
285 static void mlc_flip(u8 *src, int bpp)
287 u16 *dst = host_screen;
288 u16 *hpal = mmsp2.host_pal;
291 if (bpp <= 8 && mmsp2.dirty_pal) {
292 u32 *srcp = mmsp2.mlc_stl_pallt_d32;
295 for (i = 0; i < 256; i++, srcp++, dstp++) {
297 *dstp = ((t >> 8) & 0xf800) | ((t >> 5) & 0x07e0) | ((t >> 3) & 0x001f);
304 for (i = 0; i < 240; i++, dst += host_stride / 2 - 320) {
305 for (u = 320 / 2; u > 0; u--, src++) {
306 *dst++ = hpal[*src >> 4];
307 *dst++ = hpal[*src & 0x0f];
313 for (i = 0; i < 240; i++, dst += host_stride / 2 - 320) {
314 for (u = 320 / 4; u > 0; u--) {
315 *dst++ = hpal[*src++];
316 *dst++ = hpal[*src++];
317 *dst++ = hpal[*src++];
318 *dst++ = hpal[*src++];
324 for (i = 0; i < 240; i++, dst += host_stride / 2, src += 320*2)
325 memcpy(dst, src, 320*2);
333 host_screen = host_video_flip();
336 #define ts_add_nsec(ts, ns) { \
338 if (ts.tv_nsec >= 1000000000) { \
340 ts.tv_nsec -= 1000000000; \
344 static void *fb_sync_thread(void *arg)
346 int invalid_fb_addr = 1;
347 int manual_refresh = 0;
351 //ret = pthread_setschedprio(pthread_self(), -1);
352 //log("pthread_setschedprio %d\n", ret);
353 //ret = setpriority(PRIO_PROCESS, 0, -1);
354 //log("setpriority %d\n", ret);
356 ret = clock_gettime(CLOCK_REALTIME, &ts);
358 perror(PFX "clock_gettime");
363 u8 *gp2x_fb, *gp2x_fb_end;
366 ret = pthread_mutex_lock(&fb_mutex);
367 wait_ret = pthread_cond_timedwait(&fb_cond, &fb_mutex, &ts);
368 ret |= pthread_mutex_unlock(&fb_mutex);
371 err("fb_thread: mutex error: %d\n", ret);
375 if (wait_ret != 0 && wait_ret != ETIMEDOUT) {
376 err("fb_thread: cond error: %d\n", wait_ret);
381 if (wait_ret != ETIMEDOUT) {
382 clock_gettime(CLOCK_REALTIME, &ts);
383 ts_add_nsec(ts, 50000000);
385 if (manual_refresh == 2)
386 log("fb_thread: switch to manual refresh\n");
388 ts_add_nsec(ts, 16666667);
389 if (manual_refresh > 1)
390 log("fb_thread: switch to auto refresh\n");
394 mode = (mmsp2.mlc_stl_cntl >> 9) & 3;
395 bpp = mode ? mode * 8 : 4;
397 gp2x_fb = uppermem_lookup(mmsp2.mlc_stl_adr, &gp2x_fb_end);
398 if (gp2x_fb == NULL || gp2x_fb + 320*240 * bpp / 8 > gp2x_fb_end) {
399 if (!invalid_fb_addr) {
400 err("fb_thread: %08x is out of range\n", mmsp2.mlc_stl_adr);
406 mlc_flip(gp2x_fb, bpp);
410 static u32 xread8(u32 a)
412 iolog("r8 ", a, 0, 8);
413 iolog_unh("r8 ", a, 0, 8);
417 static u32 xread16(u32 a)
419 static u32 fudge, old_a;
422 if ((a & 0xffff0000) == 0x7f000000) {
430 // 0000 P000 VuVd00 0000 YXBA RLSeSt 0R0D 0L0U
431 // | GPIOD |GPIOC[8:15]|GPIOM[0:7]|
434 case 0x1184: // GPIOC
435 d = ~mmsp2.btn_state & 0xff00;
438 case 0x1186: // GPIOD
439 t = ~mmsp2.btn_state;
440 d = (t >> 9) & 0x0080;
441 d |= (t >> 11) & 0x0040;
442 d |= (t >> 7) & 0x0800;
445 case 0x1198: // GPIOM
446 mmsp2.btn_state = host_read_btns();
447 d = ~mmsp2.btn_state & 0xff;
450 case 0x1836: // reserved
453 case 0x2816: // DPC_X_MAX
456 case 0x2818: // DPC_Y_MAX
460 d = mmsp2.mlc_stl_cntl;
464 d = mmsp2.mlc_stl_adrl;
468 d = mmsp2.mlc_stl_adrh;
471 d = mmsp2.mlc_stl_pallt_a;
485 iolog_unh("r16", a, d & 0xffff, 16);
489 iolog("r16", a, d, 16);
493 static u32 xread32(u32 a)
496 if ((a & 0xfff00000) == 0x7f000000) {
499 case 0x0a00: // TCOUNT, 1/7372800s
504 if ((a & 0xfff00000) == 0x7f100000) {
505 u32 *bl = &blitter.dstctrl;
514 iolog_unh("r32", a, d, 32);
517 iolog("r32", a, d, 32);
521 static void xwrite8(u32 a, u32 d)
523 iolog("w8 ", a, d, 8);
524 iolog_unh("w8 ", a, d, 8);
527 static void xwrite16(u32 a, u32 d)
529 iolog("w16", a, d, 16);
530 if ((a & 0xfff00000) == 0x7f000000) {
534 mmsp2.mlc_stl_cntl = d | 0xaa;
538 // odd addresses don't affect LCD. What about TV?
541 mmsp2.mlc_stl_adrl = d;
544 mmsp2.mlc_stl_adrh = d;
545 if (mmsp2.mlc_stl_adr != mmsp2.old_mlc_stl_adr)
547 pthread_cond_signal(&fb_cond);
548 mmsp2.old_mlc_stl_adr = mmsp2.mlc_stl_adr;
551 mmsp2.mlc_stl_pallt_a = d & 0x1ff;
554 mmsp2.mlc_stl_pallt_d[mmsp2.mlc_stl_pallt_a++] = d;
555 mmsp2.mlc_stl_pallt_a &= 0x1ff;
560 iolog_unh("w16", a, d, 16);
563 static void xwrite32(u32 a, u32 d)
565 iolog("w32", a, d, 32);
567 if ((a & 0xfff00000) == 0x7f100000) {
568 u32 *bl = &blitter.dstctrl;
572 if (a_ == 0x34 && (d & 1))
577 iolog_unh("w32", a, d, 32);
580 #define LINKPAGE_SIZE 0x1000
581 #define LINKPAGE_COUNT 4
582 #define LINKPAGE_ALLOC (LINKPAGE_SIZE * LINKPAGE_COUNT)
594 void (*handler)(struct op_context *op_ctx);
598 static struct linkpage *g_linkpage;
599 static u32 *g_code_ptr;
600 static int g_linkpage_count;
602 static void *g_handler_stack_end;
604 #define BIT_SET(v, b) (v & (1 << (b)))
606 static void handle_op(struct op_context *op_ctx)
608 u32 *regs = g_linkpage->saved_regs;
610 u32 t, shift, ret, addr;
613 rd = (op & 0x0000f000) >> 12;
614 rn = (op & 0x000f0000) >> 16;
616 if ((op & 0x0f200090) == 0x01000090) { // AM3: LDRH, STRH
617 if (!BIT_SET(op, 5)) // !H
619 if (BIT_SET(op, 6) && !BIT_SET(op, 20)) // S && !L
622 if (BIT_SET(op, 22)) // imm offset
623 t = ((op & 0xf00) >> 4) | (op & 0x0f);
625 t = regs[op & 0x000f];
627 if (!BIT_SET(op, 23))
631 if (BIT_SET(op, 20)) { // Load
633 if (BIT_SET(op, 6)) { // S
635 ret = (signed int)ret >> 16;
640 xwrite16(addr, regs[rd]);
642 else if ((op & 0x0d200000) == 0x05000000) { // AM2: LDR[B], STR[B]
643 if (BIT_SET(op, 25)) { // reg offs
647 t = regs[op & 0x000f];
648 shift = (op & 0x0f80) >> 7;
649 switch ((op & 0x0060) >> 5) {
650 case 0: t = t << shift; break;
651 case 1: t = t >> (shift + 1); break;
652 case 2: t = (signed int)t >> (shift + 1); break;
653 case 3: goto unhandled; // I'm just lazy
659 if (!BIT_SET(op, 23))
663 if (BIT_SET(op, 20)) { // Load
664 if (BIT_SET(op, 22)) // Byte
671 if (BIT_SET(op, 22)) // Byte
672 xwrite8(addr, regs[rd]);
674 xwrite32(addr, regs[rd]);
681 if (addr != addr_check) {
682 fprintf(stderr, "bad calculated addr: %08x vs %08x\n", addr, addr_check);
689 err("unhandled IO op %08x @ %08x\n", op, op_ctx->pc);
692 static u32 make_offset12(u32 *pc, u32 *target)
696 lp_offs = (char *)target - (char *)pc - 2*4;
701 if (lp_offs >= LINKPAGE_SIZE) {
702 err("linkpage too far: %d\n", lp_offs);
706 return (u << 23) | lp_offs;
709 static u32 make_jmp(u32 *pc, u32 *target, int bl)
713 jmp_val = target - pc - 2;
714 if (jmp_val < (int)0xff000000 || jmp_val > 0x00ffffff) {
715 err("jump out of range (%p -> %p)\n", pc, target);
719 return 0xea000000 | (bl << 24) | (jmp_val & 0x00ffffff);
722 static void emit_op(u32 op)
727 static void emit_op_io(u32 op, u32 *target)
729 op |= make_offset12(g_code_ptr, target);
733 static void init_linkpage(void)
735 g_linkpage->handler = handle_op;
736 g_linkpage->handler_stack = g_handler_stack_end;
737 g_code_ptr = g_linkpage->code;
740 // r0 and r14 must be saved by caller, r0 is arg for handle_op
741 // on return everything is restored except lr, which is used to return
742 emit_op_io(0xe50f1000, &g_linkpage->saved_regs[1]); // str r1, [->saved_regs[1]] @ save r1
743 emit_op (0xe24f1000 + // sub r1, pc, =offs(saved_regs[2])
744 (g_code_ptr - &g_linkpage->saved_regs[2] + 2) * 4);
745 emit_op (0xe8813ffc); // stmia r1, {r2-r13}
746 emit_op_io(0xe51fd000, // ldr sp, [->handler_stack]
747 (u32 *)&g_linkpage->handler_stack);
748 emit_op (0xe2414008); // sub r4, r1, #4*2
749 emit_op (0xe10f1000); // mrs r1, cpsr
750 emit_op_io(0xe50f1000, &g_linkpage->cpsr); // str r1, [->cpsr]
751 emit_op (0xe1a0500e); // mov r5, lr
752 emit_op (0xe1a0e00f); // mov lr, pc
753 emit_op_io(0xe51ff000, (u32 *)&g_linkpage->handler); // ldr pc, =handle_op
754 emit_op_io(0xe51f1000, &g_linkpage->cpsr); // ldr r1, [->cpsr]
755 emit_op (0xe128f001); // msr cpsr_f, r1
756 emit_op (0xe1a0e005); // mov lr, r5
757 emit_op (0xe8943fff); // ldmia r4, {r0-r13}
758 emit_op (0xe12fff1e); // bx lr @ return
761 static void segv_sigaction(int num, siginfo_t *info, void *ctx)
763 struct ucontext *context = ctx;
764 u32 *regs = (u32 *)&context->uc_mcontext.arm_r0;
765 u32 *pc = (u32 *)regs[15];
766 struct op_context *op_ctx;
769 if (((regs[15] ^ (u32)&segv_sigaction) & 0xff000000) == 0 || // PC is in our segment or
770 (((regs[15] ^ (u32)g_linkpage) & ~(LINKPAGE_ALLOC - 1)) == 0) || // .. in linkpage
771 ((long)info->si_addr & 0xffe00000) != 0x7f000000) // faulting not where expected
773 // real crash - time to die
774 err("segv %d %p @ %08x\n", info->si_code, info->si_addr, regs[15]);
775 for (i = 0; i < 8; i++)
776 err(" r%d=%08x r%2d=%08x\n", i, regs[i], i+8, regs[i+8]);
777 signal(num, SIG_DFL);
781 segvlog("segv %d %p @ %08x\n", info->si_code, info->si_addr, regs[15]);
784 op_ctx = (void *)g_code_ptr;
785 op_ctx->pc = (u32)pc;
787 g_code_ptr = &op_ctx->code[0];
789 // emit jump to code ptr
790 *pc = make_jmp(pc, g_code_ptr, 0);
793 // TODO: multithreading
794 emit_op_io(0xe50f0000, &g_linkpage->saved_regs[0]); // str r0, [->saved_regs[0]] @ save r0
795 emit_op_io(0xe50fe000, &g_linkpage->saved_regs[14]); // str r14, [->saved_regs[14]]
796 emit_op (0xe24f0000 + (g_code_ptr - (u32 *)op_ctx + 2) * 4); // sub r0, pc, #op_ctx
797 emit_op (make_jmp(g_code_ptr, &g_linkpage->code[0], 1)); // bl common_code
798 emit_op_io(0xe51fe000, &g_linkpage->saved_regs[14]); // ldr r14, [->saved_regs[14]]
799 emit_op (make_jmp(g_code_ptr, pc + 1, 0)); // jmp <back>
802 sys_cacheflush(pc, pc + 1);
803 sys_cacheflush(g_linkpage, g_code_ptr);
805 lp_size = (char *)g_code_ptr - (char *)g_linkpage;
806 segvlog("code #%d %d/%d\n", g_linkpage_count, lp_size, LINKPAGE_SIZE);
808 if (lp_size + 13*4 > LINKPAGE_SIZE) {
810 if (g_linkpage_count >= LINKPAGE_COUNT) {
811 err("too many linkpages needed\n");
814 g_linkpage = (void *)((char *)g_linkpage + LINKPAGE_SIZE);
817 //handle_op(regs[15], op, regs, (u32)info->si_addr);
821 void emu_init(void *map_bottom)
823 sigaction_t segv_action = {
824 .sa_sigaction = segv_sigaction,
825 .sa_flags = SA_SIGINFO,
831 g_handler_stack_end = (void *)((long)alloca(1536 * 1024) & ~0xffff);
832 log("handler stack @ %p (current %p)\n", g_handler_stack_end, &ret);
833 // touch it now. If we crash now we'll know why
834 *((char *)g_handler_stack_end - 4096) = 1;
836 g_linkpage = (void *)(((u32)map_bottom - LINKPAGE_ALLOC) & ~0xfff);
837 pret = mmap(g_linkpage, LINKPAGE_ALLOC, PROT_READ|PROT_WRITE,
838 MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
839 if (pret != g_linkpage) {
840 perror(PFX "mmap linkpage");
843 log("linkpages @ %p\n", g_linkpage);
847 ret = host_video_init(&host_stride, 0);
849 err("can't init video\n");
852 host_screen = host_video_flip();
854 ret = pthread_create(&tid, NULL, fb_sync_thread, NULL);
856 err("failed to create fb_sync_thread: %d\n", ret);
862 mmsp2.mlc_stl_adr = 0x03101000; // fb2 is at 0x03381000
863 mmsp2.mlc_stl_cntl = 0x4ab; // 16bpp, region 1 active
865 sigemptyset(&segv_action.sa_mask);
866 sigaction(SIGSEGV, &segv_action, NULL);
869 int emu_read_gpiodev(void *buf, int count)
874 err("gpiodev read %d?\n", count);
878 btns = host_read_btns();
879 memcpy(buf, &btns, 4);
883 struct dev_fd_t emu_interesting_fds[] = {
884 [IFD_SOUND] = { "/dev/dsp", -1 },
888 static void *emu_mmap_dev(unsigned int length, int prot, int flags, unsigned int offset)
890 struct uppermem_block *umem;
895 if ((offset & ~0xffff) == 0xc0000000) {
896 return mmap((void *)0x7f000000, length, PROT_NONE,
897 MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED|MAP_NORESERVE, -1, 0);
900 if ((offset & ~0xffff) == 0xe0020000) {
901 return mmap((void *)0x7f100000, length, PROT_NONE,
902 MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED|MAP_NORESERVE, -1, 0);
905 if ((offset & 0xfe000000) != 0x02000000)
906 err("unexpected devmem mmap @ %08x\n", offset);
908 umem = calloc(1, sizeof(*umem));
916 umem->mem = mmap(NULL, length, prot, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
917 if (umem->mem != MAP_FAILED)
920 log("upper mem @ %08x %d mmap fail, trying backing file\n", offset, length);
921 sprintf(name, "m%08x", offset);
922 fd = open(name, O_CREAT|O_RDWR, 0644);
923 lseek(fd, length - 1, SEEK_SET);
927 umem->mem = mmap(NULL, length, prot, MAP_SHARED, fd, 0);
928 if (umem->mem == MAP_FAILED) {
929 err("failed, giving up\n");
937 log("upper mem @ %08x %d\n", offset, length);
938 umem->next = upper_mem;
943 void *emu_do_mmap(unsigned int length, int prot, int flags, int fd, unsigned int offset)
945 if (fd == FAKEDEV_MEM)
946 return emu_mmap_dev(length, prot, flags, offset);
948 if (fd == FAKEDEV_FB0)
949 return emu_mmap_dev(length, prot, flags, offset + 0x03101000);
951 if (fd == FAKEDEV_FB1)
952 return emu_mmap_dev(length, prot, flags, offset + 0x03381000);
954 err("bad/ni mmap(?, %d, %x, %x, %d, %08x)\n", length, prot, flags, fd, offset);
959 static int emu_sound_ioctl(int fd, int request, void *argp)
964 dbg("snd ioctl(%d, %08x, %p)", fd, request, argp);
966 dbg_c(" [%d]", *arg);
970 /* People set strange frag settings on GP2X, which even manage
971 * to break audio on pandora (causes writes to fail).
972 * Catch this and set to something that works. */
973 if (request == SNDCTL_DSP_SPEED) {
974 int ret, bsize, frag;
976 // ~4ms. gpSP wants small buffers or else it stutters
977 // because of it's audio thread sync stuff
978 bsize = *arg / 250 * 4;
979 for (frag = 0; bsize; bsize >>= 1, frag++)
982 frag |= 16 << 16; // fragment count
983 ret = ioctl(fd, SNDCTL_DSP_SETFRAGMENT, &frag);
985 err("snd ioctl SETFRAGMENT %08x: ", frag);
989 else if (request == SNDCTL_DSP_SETFRAGMENT)
992 return ioctl(fd, request, argp);
995 int emu_do_ioctl(int fd, int request, void *argp)
997 if (fd == emu_interesting_fds[IFD_SOUND].fd)
998 return emu_sound_ioctl(fd, request, argp);
1001 /* *********************** */
1008 case FBIOGET_FSCREENINFO: {
1009 struct fb_fix_screeninfo *fix = argp;
1011 memset(fix, 0, sizeof(*fix));
1012 strcpy(fix->id, "mmsp2_RGB0");
1013 fix->type = FB_TYPE_PACKED_PIXELS;
1014 fix->accel = FB_ACCEL_NONE;
1015 fix->visual = FB_VISUAL_TRUECOLOR;
1016 fix->line_length = 320*2;
1017 fix->smem_start = (fd == FAKEDEV_FB0) ? 0x03101000 : 0x03381000;
1018 fix->smem_len = 320*240*2;
1021 case FBIOGET_VSCREENINFO: {
1022 struct fb_var_screeninfo *var = argp;
1023 static const struct fb_bitfield fbb_red = { offset: 11, length: 5, };
1024 static const struct fb_bitfield fbb_green = { offset: 5, length: 6, };
1025 static const struct fb_bitfield fbb_blue = { offset: 0, length: 5, };
1027 memset(var, 0, sizeof(*var));
1028 var->activate = FB_ACTIVATE_NOW;
1030 var->xres_virtual = 320;
1032 var->yres_virtual = 240;
1035 var->vmode = FB_VMODE_NONINTERLACED;
1036 var->bits_per_pixel = 16;
1038 var->green = fbb_green;
1039 var->blue = fbb_blue;
1042 case FBIOPUT_VSCREENINFO: {
1043 struct fb_var_screeninfo *var = argp;
1044 dbg(" put vscreen: %dx%d@%d\n", var->xres, var->yres, var->bits_per_pixel);
1045 if (var->xres != 320 || var->yres != 240 || var->bits_per_pixel != 16)
1051 /* *********************** */
1053 // fake tty0 to make GPH SDL happy
1054 if (request == 0x4b46) // KDGKBENT
1060 err("bad/ni ioctl(%d, %08x, %p)\n", fd, request, argp);
1065 static const struct {
1069 { "/mnt/tmp/", "/tmp/" },
1073 static const char *wrap_path(const char *path)
1075 static char tmp_path[512];
1078 // do only path mapping for now
1079 for (i = 0; i < ARRAY_SIZE(path_map); i++) {
1080 len = strlen(path_map[i].from);
1081 if (strncmp(path, path_map[i].from, len) == 0) {
1082 snprintf(tmp_path, sizeof(tmp_path), "%s%s", path_map[i].to, path + len);
1083 dbg("mapped path \"%s\" -> \"%s\"\n", path, tmp_path);
1091 void *emu_do_fopen(const char *path, const char *mode)
1093 return fopen(wrap_path(path), mode);
1096 int emu_do_system(const char *command)
1098 static char tmp_path[512];
1101 if (command == NULL)
1104 // pass through stuff in PATH
1105 p = strchr(command, ' ');
1106 p2 = strchr(command, '/');
1107 if (p2 == NULL || (p != NULL && p2 > p))
1108 return system(command);
1110 make_local_path(tmp_path, sizeof(tmp_path), "ginge_prep");
1111 p = tmp_path + strlen(tmp_path);
1113 snprintf(p, sizeof(tmp_path) - (p - tmp_path), " %s", wrap_path(command));
1114 dbg("system: \"%s\"\n", tmp_path);
1115 return system(tmp_path);