-// vim:shiftwidth=2:expandtab
+/*
+ * GINGE - GINGE Is Not Gp2x Emulator
+ * (C) notaz, 2010-2011,2016
+ *
+ * This work is licensed under the MAME license, see COPYING file for details.
+ */
+// a "gentle" reminder
+#ifdef __ARM_EABI__
+#error loader is meant to be OABI!
+#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <alloca.h>
+#include <ctype.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <signal.h>
#include <asm/ucontext.h>
-#include <pthread.h>
#include <errno.h>
#include <time.h>
+#include <sched.h>
#include <sys/resource.h>
#include <sys/ioctl.h>
+#include <sys/syscall.h>
#include <linux/soundcard.h>
#include <linux/fb.h>
+#include <linux/futex.h>
#include "header.h"
#include "../common/host_fb.h"
#include "../common/cmn.h"
-#include "sys_cacheflush.h"
+#include "syscalls.h"
#include "realfuncs.h"
+#include "llibc.h"
#if (DBG & 2) && !(DBG & 4)
#define LOG_IO_UNK
#endif
#ifdef LOG_SEGV
-#define segvlog printf
+#define segvlog g_printf
#else
#define segvlog(...)
#endif
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;
+#define THREAD_STACK_SIZE 0x200000
+
+static int fb_sync_thread_paused;
+static int fb_sync_thread_futex;
static struct {
u32 dstctrl;
#define CTRL_TRANSPARENCYENB (1 << 11)
static struct {
+ // mmsp2
u16 mlc_stl_cntl;
union {
- u32 mlc_stl_adr;
+ u32 mlc_stl_adr; // mlcaddress for pollux
struct {
u16 mlc_stl_adrl;
u16 mlc_stl_adrh;
u32 mlc_stl_pallt_d32[256];
};
+ // pollux
+ u32 mlccontrol;
+ u16 mlcpalette[256];
+
// state
void *umem;
u32 old_mlc_stl_adr;
- u32 btn_state; // as seen through /dev/GPIO
- u32 dirty_pal:1;
+ u32 btn_state; // as seen through /dev/GPIO: 0PVdVu YXBA RLSeSt 0Ri0Dn 0Le0Up
+ struct {
+ u32 width, height;
+ u32 stride;
+ u32 bpp;
+ u32 dirty_pal:2;
+ } v;
} mmsp2;
+#define pollux mmsp2 // so that code doesn't look that weird
+enum {
+ DIRTY_PAL_MMSP2 = 1,
+ DIRTY_PAL_POLLUX = 2,
+};
#if defined(LOG_IO) || defined(LOG_IO_UNK)
if ((a & ~0xffff) == 0x7f000000)
reg = regnames[a & 0xffff];
- printf(fmt, pfx, a, d, reg);
+ g_printf(fmt, pfx, a, d, reg);
}
#endif
u32 *r = &blitter.dstctrl; \
int i; \
for (i = 0; i < 4*4; i++, r++) { \
- printf("%08x ", *r); \
+ g_printf("%08x ", *r); \
if ((i & 3) == 3) \
- printf("\n"); \
+ g_printf("\n"); \
} \
}
}
}
- if (to_screen)
- pthread_cond_signal(&fb_cond);
+ if (to_screen) {
+ fb_sync_thread_futex = 1;
+ g_futex_raw(&fb_sync_thread_futex, FUTEX_WAKE, 1, NULL);
+ }
return;
bad_blit:
}
// FIXME: pass real dimensions to blitters
-static void mlc_flip(void *src, int bpp)
+static void mlc_flip(void *src, int bpp, int stride)
{
static int old_bpp;
// only pass pal to host if it's dirty
- if (bpp <= 8 && mmsp2.dirty_pal) {
- host_video_update_pal(mmsp2.mlc_stl_pallt_d32);
- mmsp2.dirty_pal = 0;
+ if (bpp <= 8 && mmsp2.v.dirty_pal) {
+ if (mmsp2.v.dirty_pal == DIRTY_PAL_MMSP2)
+ host_video_update_pal32(mmsp2.mlc_stl_pallt_d32);
+ else
+ host_video_update_pal16(mmsp2.mlcpalette);
+ mmsp2.v.dirty_pal = 0;
}
if (bpp != old_bpp) {
switch (bpp) {
case 4:
- host_video_blit4(src, 320, 240);
+ host_video_blit4(src, 320, 240, stride);
break;
case 8:
- host_video_blit8(src, 320, 240);
+ host_video_blit8(src, 320, 240, stride);
break;
case 16:
- host_video_blit16(src, 320, 240);
+ host_video_blit16(src, 320, 240, stride);
break;
case 24:
}
}
-#define ts_add_nsec(ts, ns) { \
- ts.tv_nsec += ns; \
- if (ts.tv_nsec >= 1000000000) { \
- ts.tv_sec++; \
- ts.tv_nsec -= 1000000000; \
- } \
-}
-
static void *fb_sync_thread(void *arg)
{
+ unsigned long sigmask[2] = { ~0ul, ~0ul };
+ struct timespec ts = { 0, 0 };
int invalid_fb_addr = 1;
int manual_refresh = 0;
- struct timespec ts;
- int ret, wait_ret;
+ int frame_counter = 0;
+ int wait_ret;
+
+ // this thread can't run any signal handlers since the
+ // app's stack/tls stuff will never be set up here
+ sigmask[0] &= ~(1ul << (SIGSEGV - 1));
+ g_rt_sigprocmask_raw(SIG_SETMASK, sigmask, NULL, sizeof(sigmask));
- //ret = pthread_setschedprio(pthread_self(), -1);
- //log("pthread_setschedprio %d\n", ret);
//ret = setpriority(PRIO_PROCESS, 0, -1);
//log("setpriority %d\n", ret);
- ret = clock_gettime(CLOCK_REALTIME, &ts);
- if (ret != 0) {
- perror(PFX "clock_gettime");
- exit(1);
- }
+ // tell the main thread we're done init
+ fb_sync_thread_futex = 0;
+ g_futex_raw(&fb_sync_thread_futex, FUTEX_WAKE, 1, NULL);
while (1) {
u8 *gp2x_fb, *gp2x_fb_end;
- int mode, bpp;
- ret = pthread_mutex_lock(&fb_mutex);
- wait_ret = pthread_cond_timedwait(&fb_cond, &fb_mutex, &ts);
- ret |= pthread_mutex_unlock(&fb_mutex);
+ wait_ret = g_futex_raw(&fb_sync_thread_futex, FUTEX_WAIT, 0, &ts);
- if (ret != 0) {
- err("fb_thread: mutex error: %d\n", ret);
- sleep(1);
- continue;
+ // this is supposed to be done atomically, but to make life
+ // easier ignore it for now, race impact is low anyway
+ fb_sync_thread_futex = 0;
+
+ if (wait_ret != 0 && wait_ret != -EWOULDBLOCK
+ && wait_ret != -ETIMEDOUT)
+ {
+ err("fb_thread: futex error: %d\n", wait_ret);
+ g_sleep(1);
+ goto check_keys;
}
- if (wait_ret != 0 && wait_ret != ETIMEDOUT) {
- err("fb_thread: cond error: %d\n", wait_ret);
- sleep(1);
- continue;
+ if (fb_sync_thread_paused) {
+ ts.tv_nsec = 100000000;
+ goto check_keys;
}
- if (wait_ret != ETIMEDOUT) {
- clock_gettime(CLOCK_REALTIME, &ts);
- ts_add_nsec(ts, 50000000);
+ if (wait_ret == 0) {
+ ts.tv_nsec = 50000000;
manual_refresh++;
if (manual_refresh == 2)
dbg("fb_thread: switch to manual refresh\n");
} else {
- ts_add_nsec(ts, 16666667);
+ ts.tv_nsec = 16666667;
if (manual_refresh > 1)
dbg("fb_thread: switch to auto refresh\n");
manual_refresh = 0;
}
- mode = (mmsp2.mlc_stl_cntl >> 9) & 3;
- bpp = mode ? mode * 8 : 4;
-
gp2x_fb = uppermem_lookup(mmsp2.mlc_stl_adr, &gp2x_fb_end);
- if (gp2x_fb == NULL || gp2x_fb + 320*240 * bpp / 8 > gp2x_fb_end) {
+ if (gp2x_fb == NULL || gp2x_fb + 320*240 * mmsp2.v.bpp / 8 > gp2x_fb_end) {
if (!invalid_fb_addr) {
err("fb_thread: %08x is out of range\n", mmsp2.mlc_stl_adr);
invalid_fb_addr = 1;
continue;
}
- mlc_flip(gp2x_fb, bpp);
+ invalid_fb_addr = 0;
+ mlc_flip(gp2x_fb, mmsp2.v.bpp, mmsp2.v.stride);
+
+ frame_counter++;
+ if (frame_counter & 0x0f)
+ continue;
+
+check_keys:
+ // this is to check for kill key, in case main thread hung
+ // or something else went wrong.
+ pollux.btn_state = host_read_btns();
}
}
+static void fb_thread_pause(void)
+{
+ fb_sync_thread_paused = 1;
+ // wait until it finishes last refresh
+ // that it might be doing now
+ usleep(10000);
+}
+
+static void fb_thread_resume(void)
+{
+ fb_sync_thread_paused = 0;
+}
+
+static u32 xread32_io_cmn(u32 a, u32 *handled)
+{
+ u32 d = 0;
+
+ *handled = 1;
+ switch (a) {
+ // Wiz stuff
+ case 0x402c: // MLCVSTRIDE0
+ case 0x4060: // MLCVSTRIDE1
+ d = pollux.v.stride;
+ break;
+ case 0x4038: // MLCADDRESS0
+ case 0x406c: // MLCADDRESS1
+ d = pollux.mlc_stl_adr;
+ break;
+ // wiz_lib reads:
+ // ???? ???? YXBA DURiLe ???? VdVuMS LR?? ????
+ // | GPIOC[31:16] | GPIOB[31:16] |
+ case 0xa058: // GPIOBPAD
+ d = (pollux.btn_state >> 1) & 0x0100;
+ d |= (pollux.btn_state << 1) & 0x0200;
+ d |= (pollux.btn_state >> 3) & 0x0080;
+ d |= (pollux.btn_state >> 5) & 0x0040;
+ d |= (pollux.btn_state >> 6) & 0x0c00;
+ d <<= 16;
+ d = ~d;
+ break;
+ case 0xa098: // GPIOCPAD
+ pollux.btn_state = host_read_btns();
+ d = (pollux.btn_state >> 8) & 0x00f0;
+ d |= (pollux.btn_state >> 1) & 0x0008;
+ d |= (pollux.btn_state << 2) & 0x0004;
+ d |= (pollux.btn_state >> 5) & 0x0002;
+ d |= (pollux.btn_state >> 2) & 0x0001;
+ d <<= 16;
+ d = ~d;
+ break;
+ default:
+ *handled = 0;
+ break;
+ }
+
+ return d;
+}
+
static u32 xread8(u32 a)
{
iolog("r8 ", a, 0, 8);
d = 0x9407;
break;
// minilib reads as:
- // 0000 P000 VuVd00 0000 YXBA RLSeSt 0R0D 0L0U
- // | GPIOD |GPIOC[8:15]|GPIOM[0:7]|
+ // 0000 P000 VuVd00 0000 YXBA RLSeSt 0Ri0D 0Le0U
+ // | GPIOD |GPIOC[8:15]|GPIOM[0:7] |
// /dev/GPIO:
// ... 0PVdVu ...
case 0x1184: // GPIOC
case 0x2958:
d = mmsp2.mlc_stl_pallt_a;
break;
+
default:
- goto unh;
+ d = xread32_io_cmn(a_, &t);
+ if (!t)
+ goto unk;
+ if (!(a_ & 2))
+ d >>= 16;
+ break;
}
goto out;
}
-unh:
+unk:
if (a == old_a) {
d = fudge;
fudge = ~fudge;
u32 a_ = a & 0xffff;
struct timespec ts;
u64 t64;
+ u32 t;
switch (a_) {
case 0x0a00: // TCOUNT, 1/7372800s
- clock_gettime(CLOCK_REALTIME, &ts);
+ g_clock_gettime_raw(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;
+
+ default:
+ d = xread32_io_cmn(a_, &t);
+ if (!t)
+ goto unh;
+ break;
}
+ goto out;
}
if ((a & 0xfff00000) == 0x7f100000) {
u32 *bl = &blitter.dstctrl;
goto out;
}
}
+
+unh:
iolog_unh("r32", a, d, 32);
out:
if ((a & 0xfff00000) == 0x7f000000) {
u32 a_ = a & 0xffff;
switch (a_) {
- case 0x28da:
- mmsp2.mlc_stl_cntl = d | 0xaa;
- break;
- case 0x290e:
- case 0x2910:
- // odd addresses don't affect LCD. What about TV?
- return;
- case 0x2912:
- mmsp2.mlc_stl_adrl = d;
- return;
- case 0x2914:
- mmsp2.mlc_stl_adrh = d;
- if (mmsp2.mlc_stl_adr != mmsp2.old_mlc_stl_adr)
- // ask for refresh
- pthread_cond_signal(&fb_cond);
- mmsp2.old_mlc_stl_adr = mmsp2.mlc_stl_adr;
- return;
- case 0x2958:
- mmsp2.mlc_stl_pallt_a = d & 0x1ff;
- return;
- case 0x295a:
- mmsp2.mlc_stl_pallt_d[mmsp2.mlc_stl_pallt_a++] = d;
- mmsp2.mlc_stl_pallt_a &= 0x1ff;
- mmsp2.dirty_pal = 1;
- return;
+ case 0x28da: {
+ int mode;
+ mmsp2.mlc_stl_cntl = d | 0xaa;
+ mode = (d >> 9) & 3;
+ mmsp2.v.bpp = mode ? mode * 8 : 4;
+ break;
+ }
+ case 0x290c:
+ mmsp2.v.stride = d;
+ return;
+ case 0x290e:
+ case 0x2910:
+ // odd addresses don't affect LCD. What about TV?
+ return;
+ case 0x2912:
+ mmsp2.mlc_stl_adrl = d;
+ return;
+ case 0x2914:
+ mmsp2.mlc_stl_adrh = d;
+ if (mmsp2.mlc_stl_adr != mmsp2.old_mlc_stl_adr) {
+ // ask for refresh
+ fb_sync_thread_futex = 1;
+ g_futex_raw(&fb_sync_thread_futex, FUTEX_WAKE, 1, NULL);
+ }
+ mmsp2.old_mlc_stl_adr = mmsp2.mlc_stl_adr;
+ return;
+ case 0x2958:
+ mmsp2.mlc_stl_pallt_a = d & 0x1ff;
+ return;
+ case 0x295a:
+ mmsp2.mlc_stl_pallt_d[mmsp2.mlc_stl_pallt_a++] = d;
+ mmsp2.mlc_stl_pallt_a &= 0x1ff;
+ mmsp2.v.dirty_pal = DIRTY_PAL_MMSP2;
+ return;
}
}
iolog_unh("w16", a, d, 16);
{
iolog("w32", a, d, 32);
+ if ((a & 0xfff00000) == 0x7f000000) {
+ u32 a_ = a & 0xffff;
+ switch (a_) {
+ // Wiz
+ case 0x4024: // MLCCONTROL0
+ case 0x4058: // MLCCONTROL1
+ pollux.mlccontrol = d;
+ if (!(d & 0x20))
+ return; // layer not enabled
+ if ((d >> 16) == 0x443A)
+ pollux.v.bpp = 8;
+ else
+ pollux.v.bpp = 16;
+ return;
+ case 0x402c: // MLCVSTRIDE0
+ case 0x4060: // MLCVSTRIDE1
+ pollux.v.stride = d;
+ return;
+ case 0x4038: // MLCADDRESS0
+ case 0x406c: // MLCADDRESS1
+ pollux.mlc_stl_adr = d;
+ if (d != mmsp2.old_mlc_stl_adr) {
+ // ask for refresh
+ fb_sync_thread_futex = 1;
+ g_futex_raw(&fb_sync_thread_futex, FUTEX_WAKE, 1, NULL);
+ }
+ mmsp2.old_mlc_stl_adr = d;
+ return;
+ case 0x403c: // MLCPALETTE0
+ case 0x4070: // MLCPALETTE1
+ pollux.mlcpalette[d >> 24] = d;
+ pollux.v.dirty_pal = DIRTY_PAL_POLLUX;
+ return;
+ }
+ }
if ((a & 0xfff00000) == 0x7f100000) {
u32 *bl = &blitter.dstctrl;
u32 a_ = a & 0xfff;
static u32 *g_code_ptr;
static int g_linkpage_count;
+enum opcond {
+ C_EQ, C_NE, C_CS, C_CC, C_MI, C_PL, C_VS, C_VC,
+ C_HI, C_LS, C_GE, C_LT, C_GT, C_LE, C_AL,
+};
+enum cpsr_cond {
+ CPSR_N = (1u << 31),
+ CPSR_Z = (1u << 30),
+ CPSR_C = (1u << 29),
+ CPSR_V = (1u << 28),
+};
+
#define BIT_SET(v, b) (v & (1 << (b)))
void emu_handle_op(struct op_context *op_ctx, struct op_stackframe *sframe)
{
u32 *regs = sframe->saved_regs;
+ u32 cpsr = sframe->cpsr;
u32 op = op_ctx->op;
u32 t, shift, ret, addr;
- int rn, rd;
+ int i, rn, rd, cond;
+ cond = (op & 0xf0000000) >> 28;
rd = (op & 0x0000f000) >> 12;
rn = (op & 0x000f0000) >> 16;
+ if (cond != 0x0e) {
+ switch (cond) {
+ case C_EQ: if ( (cpsr & CPSR_Z)) break; return;
+ case C_NE: if (!(cpsr & CPSR_Z)) break; return;
+ case C_CS: if ( (cpsr & CPSR_C)) break; return;
+ case C_CC: if (!(cpsr & CPSR_C)) break; return;
+ case C_MI: if ( (cpsr & CPSR_N)) break; return;
+ case C_PL: if (!(cpsr & CPSR_N)) break; return;
+ case C_VS: if ( (cpsr & CPSR_V)) break; return;
+ case C_VC: if (!(cpsr & CPSR_V)) break; return;
+ default:
+ goto unhandled;
+ }
+ }
+
if ((op & 0x0f200090) == 0x01000090) { // AM3: LDRH, STRH
if (!BIT_SET(op, 5)) // !H
goto unhandled;
else
xwrite16(addr, regs[rd]);
}
- else if ((op & 0x0d200000) == 0x05000000) { // AM2: LDR[B], STR[B]
+ else if ((op & 0x0c000000) == 0x04000000) { // load/store word/byte
+ if (BIT_SET(op, 21))
+ goto unhandled; // unprivileged
if (BIT_SET(op, 25)) { // reg offs
if (BIT_SET(op, 4))
- goto unhandled;
+ goto unhandled; // nah it's media
t = regs[op & 0x000f];
shift = (op & 0x0f80) >> 7;
if (!BIT_SET(op, 23))
t = -t;
- addr = regs[rn] + t;
+
+ addr = regs[rn];
+ if (BIT_SET(op, 24)) // pre-indexed
+ addr += t;
+ if (!BIT_SET(op, 24) || BIT_SET(op, 21))
+ regs[rn] += t; // writeback
if (BIT_SET(op, 20)) { // Load
if (BIT_SET(op, 22)) // Byte
unhandled:
err("unhandled IO op %08x @ %08x\n", op, op_ctx->pc);
+ for (i = 0; i < 8-1; i++)
+ err(" r%d=%08x r%-2d=%08x\n", i, regs[i], i+8, regs[i+8]);
+ err(" r%d=%08x cpsr=%08x\n", i, regs[i], cpsr);
+ abort();
}
static u32 make_offset12(u32 *pc, u32 *target)
// 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++)
- dbg(" r%d=%08x r%2d=%08x\n", i, regs[i], i+8, regs[i+8]);
+ dbg(" r%d=%08x r%-2d=%08x\n", i, regs[i], i+8, regs[i+8]);
signal(num, SIG_DFL);
raise(num);
return;
.sa_sigaction = segv_sigaction,
.sa_flags = SA_SIGINFO,
};
- pthread_t tid;
void *pret;
int ret;
+#ifdef PND
+ if (geteuid() == 0) {
+ fprintf(stderr, "don't try to run as root, device registers or memory "
+ "might get trashed crashing the OS or even damaging the device.\n");
+ exit(1);
+ }
+#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);
exit(1);
}
-#ifdef WIZ
- // we are short on memmory on Wiz, need special handling
- extern void *host_mmap_upper(void);
- mmsp2.umem = host_mmap_upper();
-#else
+ // TODO: check if this really fails on Wiz..
mmsp2.umem = mmap(NULL, 0x2000000, PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
+#ifdef WIZ
+ if (mmsp2.umem == MAP_FAILED) {
+ // we are short on memmory on Wiz, need special handling
+ extern void *host_mmap_upper(void);
+ mmsp2.umem = host_mmap_upper();
+ }
#endif
if (mmsp2.umem == MAP_FAILED) {
perror(PFX "mmap upper mem");
exit(1);
}
- ret = pthread_create(&tid, NULL, fb_sync_thread, NULL);
- if (ret != 0) {
- err("failed to create fb_sync_thread: %d\n", ret);
+ pret = mmap(NULL, THREAD_STACK_SIZE, PROT_READ|PROT_WRITE|PROT_EXEC,
+ MAP_PRIVATE|MAP_ANONYMOUS|MAP_GROWSDOWN, -1, 0);
+ if (mmsp2.umem == MAP_FAILED) {
+ perror(PFX "mmap thread stack");
exit(1);
}
- pthread_detach(tid);
+ fb_sync_thread_futex = 1;
+ ret = g_clone(CLONE_VM | CLONE_FS | CLONE_FILES
+ | CLONE_SIGHAND | CLONE_THREAD,
+ (char *)pret + THREAD_STACK_SIZE, 0, 0, 0,
+ fb_sync_thread);
+ if (ret == 0 || ret == -1) {
+ perror(PFX "start fb thread");
+ exit(1);
+ }
+ g_futex_raw(&fb_sync_thread_futex, FUTEX_WAIT, 1, NULL);
- // mmsp2 defaults
+ // defaults
mmsp2.mlc_stl_adr = 0x03101000; // fb2 is at 0x03381000
mmsp2.mlc_stl_cntl = 0x4ab; // 16bpp, region 1 active
+ mmsp2.v.width = 320;
+ mmsp2.v.height = 240;
+ mmsp2.v.stride = 320*2;
+ mmsp2.v.bpp = 16;
+ mmsp2.v.dirty_pal = 1;
sigemptyset(&segv_action.sa_mask);
sigaction(SIGSEGV, &segv_action, NULL);
return count;
}
-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)
{
u8 *umem, *umem_end;
// SoC regs
- if ((offset & ~0xffff) == 0xc0000000) {
+ if ((offset & ~0x1ffff) == 0xc0000000) {
return mmap((void *)0x7f000000, length, PROT_NONE,
MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED|MAP_NORESERVE, -1, 0);
}
- // blitter
+ // MMSP2 blitter
if ((offset & ~0xffff) == 0xe0020000) {
return mmap((void *)0x7f100000, length, PROT_NONE,
MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED|MAP_NORESERVE, -1, 0);
err("warning: uppermem @ %08x overflows by %d bytes\n",
offset, umem + length - umem_end);
- dbg("upper mem @ %08x %d\n", offset, length);
+ dbg("upper mem @ %08x %x = %p\n", offset, length, umem);
return umem;
}
return MAP_FAILED;
}
+int emu_do_munmap(void *addr, unsigned int length)
+{
+ u8 *p = addr;
+
+ // don't allow to unmap upper mem
+ if ((u8 *)mmsp2.umem <= p && p < (u8 *)mmsp2.umem + 0x2000000) {
+ dbg("ignoring munmap: %p %x\n", addr, length);
+ return 0;
+ }
+
+ return -EAGAIN;
+}
+
+static void emu_sound_open(int fd)
+{
+#ifdef PND
+ int ret, frag;
+
+ // set default buffer size to 16 * 1K
+ frag = (16<<16) | 10; // 16K
+ ret = ioctl(fd, SNDCTL_DSP_SETFRAGMENT, &frag);
+ if (ret != 0) {
+ err("snd ioctl SETFRAGMENT %08x: ", frag);
+ perror(NULL);
+ }
+#endif
+}
+
static int emu_sound_ioctl(int fd, int request, void *argp)
{
int *arg = argp;
/* 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);
+ switch(request) {
+ case SNDCTL_DSP_SETFRAGMENT: {
+ int ret, bsize, frag, frag_cnt;
+ if (arg == NULL)
+ break;
+
+ frag = *arg & 0xffff;
+ frag_cnt = *arg >> 16;
+ bsize = frag_cnt << frag;
+ if (frag < 10 || bsize < 4096*4 || bsize > 4096*4*2) {
+ /*
+ * ~4ms. gpSP wants small buffers or else it stutters
+ * because of it's audio thread sync stuff
+ * XXX: hardcoding, as low samplerates will result in small fragment size,
+ * which itself causes ALSA stall and hangs the program.
+ * Also some apps change samplerate without reopening /dev/dsp,
+ * which causes ALSA to reject SNDCTL_DSP_SETFRAGMENT.
+ */
+ bsize = 44100 / 250 * 4;
+
+ for (frag = 0; bsize; bsize >>= 1, frag++)
+ ;
+
+ frag_cnt = 16;
+ }
+
+ frag |= frag_cnt << 16;
+ ret = ioctl(fd, SNDCTL_DSP_SETFRAGMENT, &frag);
+ if (ret != 0) {
+ err("snd ioctl SETFRAGMENT %08x: ", frag);
+ perror(NULL);
+ }
+ // indicate success even if we fail (because of ALSA mostly),
+ // things like MikMod will bail out otherwise.
+ return 0;
}
+ case SNDCTL_DSP_SYNC:
+ // Franxis tends to use sync/write loops, bad idea under ALSA
+ return 0;
+ default:
+ break;
}
- else if (request == SNDCTL_DSP_SETFRAGMENT)
- return 0;
return ioctl(fd, request, argp);
}
return -1;
}
+struct dev_fd_t emu_interesting_fds[] = {
+ [IFD_SOUND] = { "/dev/dsp", -1, emu_sound_open },
+ { NULL, 0, NULL },
+};
+
static const struct {
const char *from;
const char *to;
} path_map[] = {
- { "/mnt/tmp/", "/tmp/" },
+ { "/mnt/tmp", "./tmp" },
};
static const char *wrap_path(const char *path)
{
- char *buff;
+ char *buff, *p;
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) {
+ p = strstr(path, path_map[i].from);
+ if (p != NULL) {
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);
+ len = p - path;
+ strncpy(buff, path, len);
+ 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);
return buff;
}
return path;
}
+static void wrap_path_free(const char *w_path, const char *old_path)
+{
+ if (w_path != old_path)
+ free((void *)w_path);
+}
+
void *emu_do_fopen(const char *path, const char *mode)
{
- const char *w_path = wrap_path(path);
+ const char *w_path;
FILE *ret;
+
+ w_path = wrap_path(path);
ret = fopen(w_path, mode);
- if (w_path != path)
- free((void *)w_path);
+ wrap_path_free(w_path, path);
+
return ret;
}
int emu_do_system(const char *command)
{
static char tmp_path[512];
+ int need_ginge = 0;
const char *p2;
char *p;
+ int ret;
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);
+ for (p2 = command; *p2 && isspace(*p2); p2++)
+ ;
- make_local_path(tmp_path, sizeof(tmp_path), "ginge_prep");
- p = tmp_path + strlen(tmp_path);
+ if (*p2 == '.') // relative path?
+ need_ginge = 1;
+ else if (*p2 == '/' && strncmp(p2, "/bin", 4) && strncmp(p2, "/lib", 4)
+ && strncmp(p2, "/sbin", 4) && strncmp(p2, "/usr", 4))
+ // absolute path, but not a system command
+ need_ginge = 1;
p2 = wrap_path(command);
- snprintf(p, sizeof(tmp_path) - (p - tmp_path), " %s", p2);
- if (p2 != command)
- free((void *)p2);
+ if (need_ginge) {
+ make_local_path(tmp_path, sizeof(tmp_path), "ginge_prep");
+ p = tmp_path + strlen(tmp_path);
+
+ snprintf(p, sizeof(tmp_path) - (p - tmp_path), " --nomenu %s", p2);
+ }
+ else
+ snprintf(tmp_path, sizeof(tmp_path), "%s", p2);
+ wrap_path_free(p2, command);
dbg("system: \"%s\"\n", tmp_path);
- return system(tmp_path);
+
+ // the app might want the screen too..
+ fb_thread_pause();
+ ret = system(tmp_path);
+ fb_thread_resume();
+ return ret;
}
+int emu_do_execve(const char *filename, char *const argv[], char *const envp[])
+{
+ const char **new_argv;
+ char *prep_path;
+ int i, ret, argc;
+
+ if (filename == NULL)
+ return -1;
+
+ if (strstr(filename, "/gp2xmenu") != NULL)
+ exit(0);
+
+ for (i = 0; argv[i] != NULL; i++)
+ ;
+ argc = i + 1;
+
+ new_argv = calloc(argc + 2, sizeof(new_argv[0]));
+ if (new_argv == NULL)
+ return -1;
+
+ prep_path = malloc(512);
+ if (prep_path == NULL)
+ return -1;
+
+ make_local_path(prep_path, 512, "ginge_prep");
+ new_argv[0] = prep_path;
+ new_argv[1] = "--nomenu";
+ new_argv[2] = wrap_path(filename);
+
+ if (argv[0] != NULL)
+ for (i = 1; argv[i] != NULL; i++)
+ new_argv[i + 2] = argv[i];
+
+ 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");
+ return ret;
+}
+
+// vim:shiftwidth=2:expandtab
notaz.gp2x.de / ginge.git / blobdiff