/*
* GINGE - GINGE Is Not Gp2x Emulator
- * (C) notaz, 2010-2011
+ * (C) notaz, 2010-2011,2016
*
* This work is licensed under the MAME license, see COPYING file for details.
*/
#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 int emu_is_dl;
static struct {
u32 dstctrl;
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:
}
}
-#define ts_add_nsec(ts, ns) { \
- ts.tv_nsec += ns; \
- if (ts.tv_nsec >= 1000000000) { \
- ts.tv_sec++; \
- ts.tv_nsec -= 1000000000; \
- } \
-}
-
-static int fb_sync_thread_paused;
-
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;
int frame_counter = 0;
- struct timespec ts;
- int ret, wait_ret;
+ 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;
- 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);
- goto check_keys;
- }
- if (wait_ret != 0 && wait_ret != ETIMEDOUT) {
- err("fb_thread: cond error: %d\n", wait_ret);
+ // 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);
sleep(1);
goto check_keys;
}
if (fb_sync_thread_paused) {
- ts_add_nsec(ts, 100000000);
+ 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;
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;
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;
return;
case 0x2914:
mmsp2.mlc_stl_adrh = d;
- if (mmsp2.mlc_stl_adr != mmsp2.old_mlc_stl_adr)
+ if (mmsp2.mlc_stl_adr != mmsp2.old_mlc_stl_adr) {
// ask for refresh
- pthread_cond_signal(&fb_cond);
+ 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:
+ 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;
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
case 0x4038: // MLCADDRESS0
case 0x406c: // MLCADDRESS1
pollux.mlc_stl_adr = d;
- if (d != mmsp2.old_mlc_stl_adr)
+ if (d != mmsp2.old_mlc_stl_adr) {
// ask for refresh
- pthread_cond_signal(&fb_cond);
+ 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
};
struct op_linkpage {
+ u32 *code_ptr;
void (*handler)(struct op_context *op_ctx);
u32 code[0];
};
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 {
+ 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)
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();
}
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]);
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;
}
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 <back>
+ 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 <back>
// 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,
};
- pthread_t tid;
void *pret;
- int ret;
+ int i, 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");
+ err("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);
- 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();
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);
+ }
+ 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);
}
- pthread_detach(tid);
+ g_futex_raw(&fb_sync_thread_futex, FUTEX_WAIT, 1, NULL);
// defaults
mmsp2.mlc_stl_adr = 0x03101000; // fb2 is at 0x03381000
sigaction(SIGSEGV, &segv_action, NULL);
}
-int emu_read_gpiodev(void *buf, int count)
-{
- if (count <= 0) {
- err("gpiodev read %d?\n", count);
- return -1;
- }
- if (count > 4)
- count = 4;
-
- mmsp2.btn_state = host_read_btns();
- memcpy(buf, &mmsp2.btn_state, count);
- return count;
-}
-
-static void *emu_mmap_dev(unsigned int length, int prot, int flags, unsigned int offset)
+static long emu_mmap_dev(unsigned int length, int prot, int flags, unsigned int offset)
{
u8 *umem, *umem_end;
// SoC regs
if ((offset & ~0x1ffff) == 0xc0000000) {
- return mmap((void *)0x7f000000, length, PROT_NONE,
+ return g_mmap2_raw((void *)0x7f000000, length, PROT_NONE,
MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED|MAP_NORESERVE, -1, 0);
}
// MMSP2 blitter
if ((offset & ~0xffff) == 0xe0020000) {
- return mmap((void *)0x7f100000, length, PROT_NONE,
+ return g_mmap2_raw((void *)0x7f100000, length, PROT_NONE,
MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED|MAP_NORESERVE, -1, 0);
}
// upper mem
if ((offset & 0xfe000000) != 0x02000000) {
err("unexpected devmem mmap @ %08x\n", offset);
- errno = EINVAL;
- return MAP_FAILED;
+ return -EINVAL;
}
umem = uppermem_lookup(offset, &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;
+ dbg("upper mem @ %08x %x = %p\n", offset, length, umem);
+ return (long)umem;
}
-void *emu_do_mmap(unsigned int length, int prot, int flags, int fd, unsigned int offset)
+long 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);
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;
+ return -EINVAL;
+}
+
+long 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)
// 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);
- }
+ ret = g_ioctl_raw(fd, SNDCTL_DSP_SETFRAGMENT, &frag);
+ if (ret != 0)
+ err("snd ioctl SETFRAGMENT %08x: %d\n", frag, ret);
#endif
}
-static int emu_sound_ioctl(int fd, int request, void *argp)
+static long emu_sound_ioctl(int fd, int request, void *argp)
{
int *arg = argp;
* Catch this and set to something that works. */
switch(request) {
case SNDCTL_DSP_SETFRAGMENT: {
- int ret, bsize, frag, frag_cnt;
+ int bsize, frag, frag_cnt;
+ long ret;
+
if (arg == NULL)
break;
}
frag |= frag_cnt << 16;
- ret = ioctl(fd, SNDCTL_DSP_SETFRAGMENT, &frag);
- if (ret != 0) {
- err("snd ioctl SETFRAGMENT %08x: ", frag);
- perror(NULL);
- }
+ ret = g_ioctl_raw(fd, SNDCTL_DSP_SETFRAGMENT, &frag);
+ if (ret != 0)
+ err("snd ioctl SETFRAGMENT %08x: %ld\n", frag, ret);
// indicate success even if we fail (because of ALSA mostly),
// things like MikMod will bail out otherwise.
return 0;
break;
}
- return ioctl(fd, request, argp);
+ return g_ioctl_raw(fd, request, argp);
}
-int emu_do_ioctl(int fd, int request, void *argp)
+long emu_do_ioctl(int fd, int request, void *argp)
{
if (fd == emu_interesting_fds[IFD_SOUND].fd)
return emu_sound_ioctl(fd, request, argp);
fail:
err("bad/ni ioctl(%d, %08x, %p)\n", fd, request, argp);
- errno = EINVAL;
- return -1;
+ 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[] = {
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++) {
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;
}
}
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);
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;
}
// 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);
}
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);
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++)
;
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++)
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;
}
notaz.gp2x.de / ginge.git / blobdiff