#include <errno.h>
#include <time.h>
#include <sys/resource.h>
+#include <sys/ioctl.h>
+#include <linux/soundcard.h>
+#include <linux/fb.h>
#include "header.h"
+#include "../common/host_fb.h"
+#include "../common/cmn.h"
#include "sys_cacheflush.h"
+#include "realfuncs.h"
-//#define LOG_IO
-//#define LOG_IO_UNK
+#if (DBG & 2) && !(DBG & 4)
+#define LOG_IO_UNK
+#endif
+#if (DBG & 4)
+#define LOG_IO
+#endif
//#define LOG_SEGV
#ifdef LOG_IO
#include "mmsp2-regs.h"
#endif
+typedef unsigned long long u64;
typedef unsigned int u32;
typedef unsigned short u16;
typedef unsigned char u8;
static pthread_mutex_t fb_mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_cond_t fb_cond = PTHREAD_COND_INITIALIZER;
-struct uppermem_block {
- u32 addr; // physical
- u32 size;
- void *mem;
- struct uppermem_block *next;
-};
-
-static struct uppermem_block *upper_mem;
-
static struct {
u32 dstctrl;
u32 dstaddr;
};
// state
+ void *umem;
u16 host_pal[256];
u32 old_mlc_stl_adr;
u32 btn_state; // as seen through /dev/GPIO
- u16 dirty_pal:1;
+ u32 dirty_pal:1;
} mmsp2;
static u16 *host_screen;
static void *uppermem_lookup(u32 addr, u8 **mem_end)
{
- struct uppermem_block *ub;
+ // XXX: maybe support mirroring?
+ if ((addr & 0xfe000000) != 0x02000000)
+ return NULL;
- for (ub = upper_mem; ub != NULL; ub = ub->next) {
- if (ub->addr <= addr && addr < ub->addr + ub->size) {
- *mem_end = (u8 *)ub->mem + ub->size;
- return (u8 *)ub->mem + addr - ub->addr;
- }
- }
-
- return NULL;
+ *mem_end = (u8 *)mmsp2.umem + 0x02000000;
+ return (u8 *)mmsp2.umem - 0x02000000 + addr;
}
static void blitter_do(void)
u8 *dst, *dste, *src = NULL, *srce = NULL;
int w, h, sstrd, dstrd;
int to_screen = 0;
- u32 addr;
+ u32 bpp, addr;
w = blitter.size & 0x7ff;
h = (blitter.size >> 16) & 0x7ff;
// XXX: need to confirm this..
addr = (blitter.dstaddr & ~3) | ((blitter.dstctrl & 0x1f) >> 3);
+ // use dst bpp.. How does it do blits with different src bpp?
+ bpp = (blitter.dstctrl & 0x20) ? 16 : 8;
+
// maybe the screen?
- if (w == 320 && h == 240 && mmsp2.mlc_stl_adr <= addr && addr < mmsp2.mlc_stl_adr + 320*240*2)
+ if (((w == 320 && h == 240) || // blit whole screen
+ (w * h >= 320*240/2)) && // ..or at least half of the area
+ mmsp2.mlc_stl_adr <= addr && addr < mmsp2.mlc_stl_adr + 320*240*2)
to_screen = 1;
dst = uppermem_lookup(addr, &dste);
}
}
+ if (dst == NULL)
+ goto bad_blit;
+
if (dst + dstrd * h > dste) {
err("blit %08x->%08x %dx%d did not fit dst\n",
blitter.srcaddr, blitter.dstaddr, w, h);
if (src != NULL) {
// copy
- if (blitter.ctrl & CTRL_TRANSPARENCYENB) {
+ if (bpp == 16 && (blitter.ctrl & CTRL_TRANSPARENCYENB)) {
u32 trc = blitter.ctrl >> 16;
for (; h > 0; h--, dst += dstrd, src += sstrd)
blt_tr(dst, src, trc, w);
}
else {
for (; h > 0; h--, dst += dstrd, src += sstrd)
- memcpy(dst, src, w * 2);
+ memcpy(dst, src, w * bpp / 8);
}
}
else {
// fill. Assume the pattern is cleared and bg color is used
u32 bgc = blitter.patbackcolor & 0xffff;
- for (; h > 0; h--, dst += dstrd)
- memset16(dst, bgc, w);
+ if (bpp == 16) {
+ for (; h > 0; h--, dst += dstrd)
+ memset16(dst, bgc, w);
+ }
+ else {
+ for (; h > 0; h--, dst += dstrd)
+ memset(dst, bgc, w); // bgc?
+ }
}
if (to_screen)
ret = pthread_mutex_lock(&fb_mutex);
wait_ret = pthread_cond_timedwait(&fb_cond, &fb_mutex, &ts);
ret |= pthread_mutex_unlock(&fb_mutex);
+
if (ret != 0) {
err("fb_thread: mutex error: %d\n", ret);
sleep(1);
static u32 xread32(u32 a)
{
u32 d = 0;
+ if ((a & 0xfff00000) == 0x7f000000) {
+ u32 a_ = a & 0xffff;
+ struct timespec ts;
+ u64 t64;
+
+ switch (a_) {
+ case 0x0a00: // TCOUNT, 1/7372800s
+ clock_gettime(CLOCK_REALTIME, &ts);
+ t64 = (u64)ts.tv_sec * 1000000000 + ts.tv_nsec;
+ // t * 7372800.0 / 1000000000 * 0x100000000 ~= t * 31665935
+ t64 *= 31665935;
+ d = t64 >> 32;
+ break;
+ }
+ }
if ((a & 0xfff00000) == 0x7f100000) {
u32 *bl = &blitter.dstctrl;
u32 a_ = a & 0xfff;
u32 code[0];
};
-struct linkpage {
- u32 saved_regs[15];
- u32 cpsr;
- u32 *handler_stack;
+struct op_linkpage {
void (*handler)(struct op_context *op_ctx);
u32 code[0];
};
-static struct linkpage *g_linkpage;
+struct op_stackframe {
+ u32 saved_regs[15];
+ u32 cpsr;
+};
+
+static struct op_linkpage *g_linkpage;
static u32 *g_code_ptr;
static int g_linkpage_count;
-static void *g_handler_stack_end;
-
#define BIT_SET(v, b) (v & (1 << (b)))
-static void handle_op(struct op_context *op_ctx)
+void emu_handle_op(struct op_context *op_ctx, struct op_stackframe *sframe)
{
- u32 *regs = g_linkpage->saved_regs;
+ u32 *regs = sframe->saved_regs;
u32 op = op_ctx->op;
u32 t, shift, ret, addr;
int rn, rd;
static void init_linkpage(void)
{
- g_linkpage->handler = handle_op;
- g_linkpage->handler_stack = g_handler_stack_end;
+ g_linkpage->handler = emu_call_handle_op;
g_code_ptr = g_linkpage->code;
-
- // common_code.
- // r0 and r14 must be saved by caller, r0 is arg for handle_op
- // on return everything is restored except lr, which is used to return
- emit_op_io(0xe50f1000, &g_linkpage->saved_regs[1]); // str r1, [->saved_regs[1]] @ save r1
- emit_op (0xe24f1000 + // sub r1, pc, =offs(saved_regs[2])
- (g_code_ptr - &g_linkpage->saved_regs[2] + 2) * 4);
- emit_op (0xe8813ffc); // stmia r1, {r2-r13}
- emit_op_io(0xe51fd000, // ldr sp, [->handler_stack]
- (u32 *)&g_linkpage->handler_stack);
- emit_op (0xe2414008); // sub r4, r1, #4*2
- emit_op (0xe10f1000); // mrs r1, cpsr
- emit_op_io(0xe50f1000, &g_linkpage->cpsr); // str r1, [->cpsr]
- emit_op (0xe1a0500e); // mov r5, lr
- emit_op (0xe1a0e00f); // mov lr, pc
- emit_op_io(0xe51ff000, (u32 *)&g_linkpage->handler); // ldr pc, =handle_op
- emit_op_io(0xe51f1000, &g_linkpage->cpsr); // ldr r1, [->cpsr]
- emit_op (0xe128f001); // msr cpsr_f, r1
- emit_op (0xe1a0e005); // mov lr, r5
- emit_op (0xe8943fff); // ldmia r4, {r0-r13}
- emit_op (0xe12fff1e); // bx lr @ return
}
static void segv_sigaction(int num, siginfo_t *info, void *ctx)
u32 *regs = (u32 *)&context->uc_mcontext.arm_r0;
u32 *pc = (u32 *)regs[15];
struct op_context *op_ctx;
- int lp_size;
+ int i, lp_size;
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
{
// real crash - time to die
err("segv %d %p @ %08x\n", info->si_code, info->si_addr, regs[15]);
+ for (i = 0; i < 8; i++)
+ err(" r%d=%08x r%2d=%08x\n", i, regs[i], i+8, regs[i+8]);
signal(num, SIG_DFL);
raise(num);
return;
*pc = make_jmp(pc, g_code_ptr, 0);
// generate code:
- // TODO: multithreading
- emit_op_io(0xe50f0000, &g_linkpage->saved_regs[0]); // str r0, [->saved_regs[0]] @ save r0
- emit_op_io(0xe50fe000, &g_linkpage->saved_regs[14]); // str r14, [->saved_regs[14]]
+ 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 (make_jmp(g_code_ptr, &g_linkpage->code[0], 1)); // bl common_code
- emit_op_io(0xe51fe000, &g_linkpage->saved_regs[14]); // ldr r14, [->saved_regs[14]]
+ 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 <back>
// sync caches
void emu_init(void *map_bottom)
{
- struct sigaction segv_action = {
+ sigaction_t segv_action = {
.sa_sigaction = segv_sigaction,
.sa_flags = SA_SIGINFO,
};
void *pret;
int ret;
- g_handler_stack_end = (void *)((long)alloca(1536 * 1024) & ~0xffff);
- log("handler stack @ %p (current %p)\n", g_handler_stack_end, &ret);
- // touch it now. If we crash now we'll know why
- *((char *)g_handler_stack_end - 4096) = 1;
-
g_linkpage = (void *)(((u32)map_bottom - LINKPAGE_ALLOC) & ~0xfff);
- pret = mmap(g_linkpage, LINKPAGE_ALLOC, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
+ pret = mmap(g_linkpage, LINKPAGE_ALLOC, PROT_READ|PROT_WRITE,
+ MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
if (pret != g_linkpage) {
perror(PFX "mmap linkpage");
exit(1);
log("linkpages @ %p\n", g_linkpage);
init_linkpage();
+ mmsp2.umem = mmap(NULL, 0x2000000, PROT_READ|PROT_WRITE|PROT_EXEC,
+ MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
+ if (mmsp2.umem == MAP_FAILED) {
+ perror(PFX "mmap upper mem");
+ exit(1);
+ }
+
// host stuff
ret = host_video_init(&host_stride, 0);
if (ret != 0) {
- err("can't alloc screen\n");
+ err("can't init video\n");
exit(1);
}
host_screen = host_video_flip();
// mmsp2 defaults
mmsp2.mlc_stl_adr = 0x03101000; // fb2 is at 0x03381000
+ mmsp2.mlc_stl_cntl = 0x4ab; // 16bpp, region 1 active
sigemptyset(&segv_action.sa_mask);
sigaction(SIGSEGV, &segv_action, NULL);
return 4;
}
-void *emu_mmap_dev(unsigned int length, int prot, int flags, unsigned int offset)
+struct dev_fd_t emu_interesting_fds[] = {
+ [IFD_SOUND] = { "/dev/dsp", -1 },
+ { NULL, 0 },
+};
+
+static void *emu_mmap_dev(unsigned int length, int prot, int flags, unsigned int offset)
{
- struct uppermem_block *umem;
- char name[32];
- int fd;
+ u8 *umem, *umem_end;
// SoC regs
if ((offset & ~0xffff) == 0xc0000000) {
MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED|MAP_NORESERVE, -1, 0);
}
// upper mem
- if ((offset & 0xfe000000) != 0x02000000)
+ if ((offset & 0xfe000000) != 0x02000000) {
err("unexpected devmem mmap @ %08x\n", offset);
-
- umem = calloc(1, sizeof(*umem));
- if (umem == NULL) {
- err("OOM\n");
+ errno = EINVAL;
return MAP_FAILED;
}
- umem->addr = offset;
- umem->size = length;
- umem->mem = mmap(NULL, length, prot, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
- if (umem->mem != MAP_FAILED)
- goto done;
-
- log("upper mem @ %08x %d mmap fail, trying backing file\n", offset, length);
- sprintf(name, "m%08x", offset);
- fd = open(name, O_CREAT|O_RDWR, 0644);
- lseek(fd, length - 1, SEEK_SET);
- name[0] = 0;
- write(fd, name, 1);
-
- umem->mem = mmap(NULL, length, prot, MAP_SHARED, fd, 0);
- if (umem->mem == MAP_FAILED) {
- err("failed, giving up\n");
- close(fd);
- free(umem);
- return MAP_FAILED;
+ umem = uppermem_lookup(offset, &umem_end);
+ if (umem + length > umem_end)
+ err("warning: uppermem @ %08x overflows by %d bytes\n",
+ offset, umem + length - umem_end);
+
+ dbg("upper mem @ %08x %d\n", offset, length);
+ return umem;
+}
+
+void *emu_do_mmap(unsigned int length, int prot, int flags, int fd, unsigned int offset)
+{
+ if (fd == FAKEDEV_MEM)
+ return emu_mmap_dev(length, prot, flags, offset);
+
+ if (fd == FAKEDEV_FB0)
+ return emu_mmap_dev(length, prot, flags, offset + 0x03101000);
+
+ if (fd == FAKEDEV_FB1)
+ return emu_mmap_dev(length, prot, flags, offset + 0x03381000);
+
+ err("bad/ni mmap(?, %d, %x, %x, %d, %08x)\n", length, prot, flags, fd, offset);
+ errno = EINVAL;
+ return MAP_FAILED;
+}
+
+static int emu_sound_ioctl(int fd, int request, void *argp)
+{
+ int *arg = argp;
+
+#if 0
+ dbg("snd ioctl(%d, %08x, %p)", fd, request, argp);
+ if (arg != NULL)
+ dbg_c(" [%d]", *arg);
+ dbg_c("\n");
+#endif
+
+ /* People set strange frag settings on GP2X, which even manage
+ * to break audio on pandora (causes writes to fail).
+ * Catch this and set to something that works. */
+ if (request == SNDCTL_DSP_SPEED) {
+ int ret, bsize, frag;
+
+ // ~4ms. gpSP wants small buffers or else it stutters
+ // because of it's audio thread sync stuff
+ bsize = *arg / 250 * 4;
+ for (frag = 0; bsize; bsize >>= 1, frag++)
+ ;
+
+ frag |= 16 << 16; // fragment count
+ ret = ioctl(fd, SNDCTL_DSP_SETFRAGMENT, &frag);
+ if (ret != 0) {
+ err("snd ioctl SETFRAGMENT %08x: ", frag);
+ perror(NULL);
+ }
}
+ else if (request == SNDCTL_DSP_SETFRAGMENT)
+ return 0;
+
+ return ioctl(fd, request, argp);
+}
+
+int emu_do_ioctl(int fd, int request, void *argp)
+{
+ if (fd == emu_interesting_fds[IFD_SOUND].fd)
+ return emu_sound_ioctl(fd, request, argp);
+
+ switch (fd) {
+ /* *********************** */
+ case FAKEDEV_FB0:
+ case FAKEDEV_FB1:
+ if (argp == NULL)
+ goto fail;
+
+ switch (request) {
+ case FBIOGET_FSCREENINFO: {
+ struct fb_fix_screeninfo *fix = argp;
+
+ memset(fix, 0, sizeof(*fix));
+ strcpy(fix->id, "mmsp2_RGB0");
+ fix->type = FB_TYPE_PACKED_PIXELS;
+ fix->accel = FB_ACCEL_NONE;
+ fix->visual = FB_VISUAL_TRUECOLOR;
+ fix->line_length = 320*2;
+ fix->smem_start = (fd == FAKEDEV_FB0) ? 0x03101000 : 0x03381000;
+ fix->smem_len = 320*240*2;
+ return 0;
+ }
+ case FBIOGET_VSCREENINFO: {
+ struct fb_var_screeninfo *var = argp;
+ static const struct fb_bitfield fbb_red = { offset: 11, length: 5, };
+ static const struct fb_bitfield fbb_green = { offset: 5, length: 6, };
+ static const struct fb_bitfield fbb_blue = { offset: 0, length: 5, };
+
+ memset(var, 0, sizeof(*var));
+ var->activate = FB_ACTIVATE_NOW;
+ var->xres =
+ var->xres_virtual = 320;
+ var->yres =
+ var->yres_virtual = 240;
+ var->width =
+ var->height = -1;
+ var->vmode = FB_VMODE_NONINTERLACED;
+ var->bits_per_pixel = 16;
+ var->red = fbb_red;
+ var->green = fbb_green;
+ var->blue = fbb_blue;
+ return 0;
+ }
+ case FBIOPUT_VSCREENINFO: {
+ struct fb_var_screeninfo *var = argp;
+ dbg(" put vscreen: %dx%d@%d\n", var->xres, var->yres, var->bits_per_pixel);
+ if (var->xres != 320 || var->yres != 240 || var->bits_per_pixel != 16)
+ return -1;
+ return 0;
+ }
+ }
+
+ /* *********************** */
+ case FAKEDEV_TTY0:
+ // fake tty0 to make GPH SDL happy
+ if (request == 0x4b46) // KDGKBENT
+ return -1;
+ return 0;
+ }
+
+fail:
+ err("bad/ni ioctl(%d, %08x, %p)\n", fd, request, argp);
+ errno = EINVAL;
+ return -1;
+}
+
+static const struct {
+ const char *from;
+ const char *to;
+} path_map[] = {
+ { "/mnt/tmp/", "/tmp/" },
+};
+
+static const char *wrap_path(const char *path)
+{
+ char *buff;
+ size_t size;
+ int i, len;
+
+ // do only path mapping for now
+ for (i = 0; i < ARRAY_SIZE(path_map); i++) {
+ len = strlen(path_map[i].from);
+ if (strncmp(path, path_map[i].from, len) == 0) {
+ size = strlen(path) + strlen(path_map[i].to) + 1;
+ buff = malloc(size);
+ if (buff == NULL)
+ break;
+ snprintf(buff, size, "%s%s", path_map[i].to, path + len);
+ dbg("mapped path \"%s\" -> \"%s\"\n", path, buff);
+ return buff;
+ }
+ }
+
+ return path;
+}
+
+void *emu_do_fopen(const char *path, const char *mode)
+{
+ const char *w_path = wrap_path(path);
+ FILE *ret;
+ ret = fopen(w_path, mode);
+ if (w_path != path)
+ free((void *)w_path);
+ return ret;
+}
+
+// FIXME: threads..
+int emu_do_system(const char *command)
+{
+ static char tmp_path[512];
+ const char *p2;
+ char *p;
+
+ if (command == NULL)
+ return -1;
+
+ // pass through stuff in PATH
+ p = strchr(command, ' ');
+ p2 = strchr(command, '/');
+ if (p2 == NULL || (p != NULL && p2 > p))
+ return system(command);
+
+ make_local_path(tmp_path, sizeof(tmp_path), "ginge_prep");
+ p = tmp_path + strlen(tmp_path);
+
+ p2 = wrap_path(command);
+ snprintf(p, sizeof(tmp_path) - (p - tmp_path), " %s", p2);
+ if (p2 != command)
+ free((void *)p2);
-done:
- log("upper mem @ %08x %d\n", offset, length);
- umem->next = upper_mem;
- upper_mem = umem;
- return umem->mem;
+ dbg("system: \"%s\"\n", tmp_path);
+ return system(tmp_path);
}
notaz.gp2x.de / ginge.git / blobdiff