X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=ginge.git;a=blobdiff_plain;f=loader%2Femu.c;h=c0b52dba996a2325940794202b628cd2347d3ac9;hp=d142611268b69d10469ad3e84b7512f0ebb6e09a;hb=cbd18fd2d426540a4101b7345c93f49b6fbbfa6d;hpb=b4f4cb40a6f3f4ecc05c7b6c8f2e852282234519 diff --git a/loader/emu.c b/loader/emu.c index d142611..c0b52db 100644 --- a/loader/emu.c +++ b/loader/emu.c @@ -78,6 +78,8 @@ typedef unsigned char u8; static int fb_sync_thread_paused; static int fb_sync_thread_futex; +static int emu_is_dl; + static struct { u32 dstctrl; u32 dstaddr; @@ -428,11 +430,17 @@ static void fb_thread_resume(void) static u32 xread32_io_cmn(u32 a, u32 *handled) { + struct timespec ts; u32 d = 0; *handled = 1; switch (a) { // Wiz stuff + case 0x1980: // TIMER3 TMRCOUNT + // assume the timer is set up for microsec time + g_clock_gettime_raw(CLOCK_REALTIME, &ts); + d = ts.tv_sec * 1000000 + ((u64)(u32)ts.tv_nsec * 4294968 >> 32); + break; case 0x402c: // MLCVSTRIDE0 case 0x4060: // MLCVSTRIDE1 d = pollux.v.stride; @@ -643,10 +651,10 @@ static void xwrite16(u32 a, u32 d) } mmsp2.old_mlc_stl_adr = mmsp2.mlc_stl_adr; return; - case 0x2958: + case 0x2958: // MLC_STL_PALLT_A mmsp2.mlc_stl_pallt_a = d & 0x1ff; return; - case 0x295a: + case 0x295a: // MLC_STL_PALLT_D mmsp2.mlc_stl_pallt_d[mmsp2.mlc_stl_pallt_a++] = d; mmsp2.mlc_stl_pallt_a &= 0x1ff; mmsp2.v.dirty_pal = DIRTY_PAL_MMSP2; @@ -663,6 +671,14 @@ static void xwrite32(u32 a, u32 d) if ((a & 0xfff00000) == 0x7f000000) { u32 a_ = a & 0xffff; switch (a_) { + // GP2X + case 0x295a: // MLC_STL_PALLT_D + // special unaligned 32bit write, allegro seems to rely on it + mmsp2.mlc_stl_pallt_d[mmsp2.mlc_stl_pallt_a++ & 0x1ff] = d; + mmsp2.mlc_stl_pallt_d[mmsp2.mlc_stl_pallt_a++ & 0x1ff] = d >> 16; + mmsp2.mlc_stl_pallt_a &= 0x1ff; + mmsp2.v.dirty_pal = DIRTY_PAL_MMSP2; + return; // Wiz case 0x4024: // MLCCONTROL0 case 0x4058: // MLCCONTROL1 @@ -719,6 +735,7 @@ struct op_context { }; struct op_linkpage { + u32 *code_ptr; void (*handler)(struct op_context *op_ctx); u32 code[0]; }; @@ -728,8 +745,7 @@ struct op_stackframe { u32 cpsr; }; -static struct op_linkpage *g_linkpage; -static u32 *g_code_ptr; +static struct op_linkpage *g_linkpages[2]; static int g_linkpage_count; enum opcond { @@ -881,7 +897,7 @@ static u32 make_jmp(u32 *pc, u32 *target, int bl) int jmp_val; jmp_val = target - pc - 2; - if (jmp_val < (int)0xff000000 || jmp_val > 0x00ffffff) { + if (jmp_val < (int)0xff800000 || jmp_val > 0x007fffff) { err("jump out of range (%p -> %p)\n", pc, target); abort(); } @@ -889,34 +905,41 @@ static u32 make_jmp(u32 *pc, u32 *target, int bl) return 0xea000000 | (bl << 24) | (jmp_val & 0x00ffffff); } -static void emit_op(u32 op) +static void emit_op(struct op_linkpage *linkpage, u32 op) { - *g_code_ptr++ = op; + *linkpage->code_ptr++ = op; } -static void emit_op_io(u32 op, u32 *target) +static void emit_op_io(struct op_linkpage *linkpage, + u32 op, u32 *target) { - op |= make_offset12(g_code_ptr, target); - emit_op(op); + op |= make_offset12(linkpage->code_ptr, target); + emit_op(linkpage, op); } -static void init_linkpage(void) +static void init_linkpage(struct op_linkpage *linkpage) { - g_linkpage->handler = emu_call_handle_op; - g_code_ptr = g_linkpage->code; + linkpage->handler = emu_call_handle_op; + linkpage->code_ptr = linkpage->code; } static void segv_sigaction(int num, siginfo_t *info, void *ctx) { + extern char _init, _end; struct ucontext *context = ctx; u32 *regs = (u32 *)&context->uc_mcontext.arm_r0; u32 *pc = (u32 *)regs[15]; + u32 self_start, self_end; + struct op_linkpage *lp = NULL; struct op_context *op_ctx; - int i, lp_size; + int i, ret, lp_i, lp_size; + + self_start = (u32)&_init & ~0xfff; + self_end = (u32)&_end; - if (((regs[15] ^ (u32)&segv_sigaction) & 0xff000000) == 0 || // PC is in our segment or - (((regs[15] ^ (u32)g_linkpage) & ~(LINKPAGE_ALLOC - 1)) == 0) || // .. in linkpage - ((long)info->si_addr & 0xffe00000) != 0x7f000000) // faulting not where expected + if ((self_start <= regs[15] && regs[15] <= self_end) || // PC is in our segment or + !((regs[15] ^ (u32)g_linkpages[0]) & ~(LINKPAGE_ALLOC - 1)) || // .. in linkpage + ((long)info->si_addr & 0xffe00000) != 0x7f000000) // faulting not where expected { // real crash - time to die err("segv %d %p @ %08x\n", info->si_code, info->si_addr, regs[15]); @@ -928,52 +951,74 @@ static void segv_sigaction(int num, siginfo_t *info, void *ctx) } segvlog("segv %d %p @ %08x\n", info->si_code, info->si_addr, regs[15]); + // find nearby linkpage + for (lp_i = 0; lp_i < ARRAY_SIZE(g_linkpages); lp_i++) { + if (g_linkpages[lp_i] == NULL) + continue; + i = g_linkpages[lp_i]->code_ptr + 2 - pc - 2; + if ((int)0xff800000 <= i && i <= 0x007fffff) { + lp = g_linkpages[lp_i]; + break; + } + } + + if (lp == NULL) { + err("fatal: no nearby linkpage for %08x\n", regs[15]); + abort(); + } + + if (emu_is_dl) { + ret = mprotect((void *)((long)pc & ~0xfff), 0x1000, PROT_READ|PROT_WRITE|PROT_EXEC); + if (ret != 0) + perror("warning: mprotect"); + } + // spit PC and op - op_ctx = (void *)g_code_ptr; + op_ctx = (void *)lp->code_ptr; op_ctx->pc = (u32)pc; op_ctx->op = *pc; - g_code_ptr = &op_ctx->code[0]; + lp->code_ptr = &op_ctx->code[0]; // emit jump to code ptr - *pc = make_jmp(pc, g_code_ptr, 0); + *pc = make_jmp(pc, lp->code_ptr, 0); // generate code: - emit_op (0xe50d0000 + 0xf00 - 4 * 0); // str r0, [sp, #(-0xf00 + r0_offs)] - emit_op (0xe50de000 + 0xf00 - 4 * 14); // str lr, [sp, #(-0xf00 + lr_offs)] - emit_op (0xe24f0000 + (g_code_ptr - (u32 *)op_ctx + 2) * 4); // sub r0, pc, #op_ctx - emit_op (0xe1a0e00f); // mov lr, pc - emit_op_io(0xe51ff000, (u32 *)&g_linkpage->handler); // ldr pc, =handle_op - emit_op (0xe51de000 + 0xf00 - 4 * 14); // ldr lr, [sp, #(-0xf00 + lr_offs)] - emit_op (make_jmp(g_code_ptr, pc + 1, 0)); // jmp + emit_op (lp, 0xe50d0000 + 0xf00 - 4 * 0); // str r0, [sp, #(-0xf00 + r0_offs)] + emit_op (lp, 0xe50de000 + 0xf00 - 4 * 14); // str lr, [sp, #(-0xf00 + lr_offs)] + emit_op (lp, 0xe24f0000 + (lp->code_ptr - (u32 *)op_ctx + 2) * 4); // sub r0, pc, #op_ctx + emit_op (lp, 0xe1a0e00f); // mov lr, pc + emit_op_io(lp, 0xe51ff000, (u32 *)&lp->handler); // ldr pc, =handle_op + emit_op (lp, 0xe51de000 + 0xf00 - 4 * 14); // ldr lr, [sp, #(-0xf00 + lr_offs)] + emit_op (lp, make_jmp(lp->code_ptr, pc + 1, 0)); // jmp // sync caches sys_cacheflush(pc, pc + 1); - sys_cacheflush(g_linkpage, g_code_ptr); + sys_cacheflush(lp, lp->code_ptr); - lp_size = (char *)g_code_ptr - (char *)g_linkpage; + lp_size = (char *)lp->code_ptr - (char *)lp; segvlog("code #%d %d/%d\n", g_linkpage_count, lp_size, LINKPAGE_SIZE); - if (lp_size + 13*4 > LINKPAGE_SIZE) { + if (lp_size + 14*4 > LINKPAGE_SIZE) { g_linkpage_count++; if (g_linkpage_count >= LINKPAGE_COUNT) { err("too many linkpages needed\n"); abort(); } - g_linkpage = (void *)((char *)g_linkpage + LINKPAGE_SIZE); - init_linkpage(); + g_linkpages[lp_i] = (void *)((char *)g_linkpages[lp_i] + LINKPAGE_SIZE); + init_linkpage(g_linkpages[lp_i]); } //handle_op(regs[15], op, regs, (u32)info->si_addr); //regs[15] += 4; } -void emu_init(void *map_bottom) +void emu_init(void *map_bottom[2], int is_dl) { sigaction_t segv_action = { .sa_sigaction = segv_sigaction, .sa_flags = SA_SIGINFO, }; void *pret; - int ret; + int i, ret; #ifdef PND if (geteuid() == 0) { @@ -983,15 +1028,22 @@ void emu_init(void *map_bottom) } #endif - g_linkpage = (void *)(((u32)map_bottom - LINKPAGE_ALLOC) & ~0xfff); - pret = mmap(g_linkpage, LINKPAGE_ALLOC, PROT_READ|PROT_WRITE, - MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED, -1, 0); - if (pret != g_linkpage) { - perror(PFX "mmap linkpage"); - exit(1); + emu_is_dl = is_dl; + + for (i = 0; i < 2; i++) { + if (map_bottom[i] == NULL) + continue; + g_linkpages[i] = (void *)(((u32)map_bottom[i] - LINKPAGE_ALLOC) & ~0xfff); + pret = mmap(g_linkpages[i], LINKPAGE_ALLOC, PROT_READ|PROT_WRITE, + MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED, -1, 0); + if (pret != g_linkpages[i]) { + err("linkpage alloc @ %p: ", g_linkpages[i]); + perror(NULL); + exit(1); + } + log("linkpages @ %p\n", g_linkpages[i]); + init_linkpage(g_linkpages[i]); } - log("linkpages @ %p\n", g_linkpage); - init_linkpage(); // host stuff ret = host_init(); @@ -1051,20 +1103,6 @@ void emu_init(void *map_bottom) sigaction(SIGSEGV, &segv_action, NULL); } -long emu_read_gpiodev(void *buf, int count) -{ - if (count <= 0) { - err("gpiodev read %d?\n", count); - return -EINVAL; - } - if (count > 4) - count = 4; - - mmsp2.btn_state = host_read_btns(); - memcpy(buf, &mmsp2.btn_state, count); - return count; -} - static long emu_mmap_dev(unsigned int length, int prot, int flags, unsigned int offset) { u8 *umem, *umem_end; @@ -1253,6 +1291,7 @@ long emu_do_ioctl(int fd, int request, void *argp) } /* *********************** */ + case FAKEDEV_TTY: case FAKEDEV_TTY0: // fake tty0 to make GPH SDL happy if (request == 0x4b46) // KDGKBENT @@ -1265,6 +1304,57 @@ fail: return -EINVAL; } +static const char wm97xx_p[] = + "5507 0 -831476 0 -4218 16450692 65536"; // from 4.0 fw + +long emu_do_read(int fd, void *buf, int count) +{ + int ret, pressed = 0, x, y; + struct { + u16 pressure, x, y; + } wm97xx; + + if (count < 0) { + err("read(%d, %d)\n", fd, count); + return -EINVAL; + } + + switch (fd) { + case FAKEDEV_GPIO: + mmsp2.btn_state = host_read_btns(); + + if (count > 4) + count = 4; + memcpy(buf, &mmsp2.btn_state, count); + break; + case FAKEDEV_WM97XX: + ret = host_read_ts(&pressed, &x, &y); + if (ret == 0 && pressed) { + wm97xx.pressure = 0x8001; // TODO: check the real thing + wm97xx.x = x * 3750 / 1024 + 200; + wm97xx.y = 3750 - y * 3750 / 1024 + 200; + } + else { + wm97xx.pressure = 0; + wm97xx.x = wm97xx.y = 200; + } + + if (count > sizeof(wm97xx)) + count = sizeof(wm97xx); + memcpy(buf, &wm97xx, count); + break; + case FAKEDEV_WM97XX_P: + if (count < sizeof(wm97xx_p)) + err("incomplete pointercal read\n"); + strncpy(buf, wm97xx_p, count); + break; + default: + dbg("read(%d, %d)\n", fd, count); + return -EINVAL; + } + return count; +} + struct dev_fd_t emu_interesting_fds[] = { [IFD_SOUND] = { "/dev/dsp", -1, emu_sound_open }, { NULL, 0, NULL }, @@ -1275,13 +1365,15 @@ static const struct { const char *to; } path_map[] = { { "/mnt/tmp", "./tmp" }, + { "/mnt/sd", "./mntsd" }, }; -static const char *wrap_path(const char *path) +const char *emu_wrap_path(const char *path) { char *buff, *p; size_t size; int i, len; + long ret; // do only path mapping for now for (i = 0; i < ARRAY_SIZE(path_map); i++) { @@ -1296,6 +1388,11 @@ static const char *wrap_path(const char *path) snprintf(buff + len, size - len, "%s%s", path_map[i].to, path + len + strlen(path_map[i].from)); dbg("mapped path \"%s\" -> \"%s\"\n", path, buff); + + ret = g_mkdir_raw(path_map[i].to, 0666); + if (ret != 0 && ret != -EEXIST) + err("mkdir(%s): %ld\n", path_map[i].to, ret); + return buff; } } @@ -1303,7 +1400,7 @@ static const char *wrap_path(const char *path) return path; } -static void wrap_path_free(const char *w_path, const char *old_path) +void emu_wrap_path_free(const char *w_path, const char *old_path) { if (w_path != old_path) free((void *)w_path); @@ -1314,9 +1411,23 @@ void *emu_do_fopen(const char *path, const char *mode) const char *w_path; FILE *ret; - w_path = wrap_path(path); - ret = fopen(w_path, mode); - wrap_path_free(w_path, path); + if (strcmp(path, "/etc/pointercal") == 0) { + // use local pontercal, not host's + ret = fopen("pointercal", mode); + if (ret == NULL) { + ret = fopen("pointercal", "w"); + if (ret != NULL) { + fwrite(wm97xx_p, 1, sizeof(wm97xx_p), ret); + fclose(ret); + } + ret = fopen("pointercal", mode); + } + } + else { + w_path = emu_wrap_path(path); + ret = fopen(w_path, mode); + emu_wrap_path_free(w_path, path); + } return ret; } @@ -1343,7 +1454,7 @@ int emu_do_system(const char *command) // absolute path, but not a system command need_ginge = 1; - p2 = wrap_path(command); + p2 = emu_wrap_path(command); if (need_ginge) { make_local_path(tmp_path, sizeof(tmp_path), "ginge_prep"); p = tmp_path + strlen(tmp_path); @@ -1352,7 +1463,7 @@ int emu_do_system(const char *command) } else snprintf(tmp_path, sizeof(tmp_path), "%s", p2); - wrap_path_free(p2, command); + emu_wrap_path_free(p2, command); dbg("system: \"%s\"\n", tmp_path); @@ -1363,17 +1474,19 @@ int emu_do_system(const char *command) return ret; } -int emu_do_execve(const char *filename, char *const argv[], char *const envp[]) +long emu_do_execve(const char *filename, char * const argv[], + char * const envp[]) { const char **new_argv; char *prep_path; - int i, ret, argc; + int i, argc; + long ret; if (filename == NULL) return -1; - if (strstr(filename, "/gp2xmenu") != NULL) - exit(0); + if (strstr(filename, "gp2xmenu") != NULL) + host_forced_exit(0); for (i = 0; argv[i] != NULL; i++) ; @@ -1390,7 +1503,7 @@ int emu_do_execve(const char *filename, char *const argv[], char *const envp[]) make_local_path(prep_path, 512, "ginge_prep"); new_argv[0] = prep_path; new_argv[1] = "--nomenu"; - new_argv[2] = wrap_path(filename); + new_argv[2] = emu_wrap_path(filename); if (argv[0] != NULL) for (i = 1; argv[i] != NULL; i++) @@ -1398,7 +1511,7 @@ int emu_do_execve(const char *filename, char *const argv[], char *const envp[]) dbg("execve \"%s\" %s \"%s\"\n", new_argv[0], new_argv[1], new_argv[2]); ret = execve(new_argv[0], (char **)new_argv, envp); - perror("execve"); + err("execve(%s): %ld\n", new_argv[0], ret); return ret; }