libretro: satisfy vita's dynarec needs in a cleaner way

[picodrive.git] / platform / libretro / libretro.c

diff --git a/platform/libretro/libretro.c b/platform/libretro/libretro.c
index 3502b5e..e7f588a 100644 (file)
--- a/platform/libretro/libretro.c
+++ b/platform/libretro/libretro.c
@@ -98,6 +98,7 @@ void cache_flush_d_inval_i(void *start, void *end)
 {
 #ifdef __arm__
    size_t len = (char *)end - (char *)start;
+   (void)len;
 #if defined(__BLACKBERRY_QNX__)
    msync(start, end - start, MS_SYNC | MS_CACHE_ONLY | MS_INVALIDATE_ICACHE);
 #elif defined(__MACH__)
@@ -435,14 +436,25 @@ void plat_munmap(void *ptr, size_t size)
 }
 #endif
 
+// if NULL is returned, static buffer is used
+void *plat_mem_get_for_drc(size_t size)
+{
+   void *mem = NULL;
+#ifdef VITA
+   sceKernelGetMemBlockBase(sceBlock, &mem);
+#endif
+   return mem;
+}
+
 int plat_mem_set_exec(void *ptr, size_t size)
 {
+   int ret = -1;
 #ifdef _WIN32
-   int ret = VirtualProtect(ptr,size,PAGE_EXECUTE_READWRITE,0);
+   ret = VirtualProtect(ptr, size, PAGE_EXECUTE_READWRITE, 0);
    if (ret == 0 && log_cb)
-      log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, 0);
+      log_cb(RETRO_LOG_ERROR, "VirtualProtect(%p, %d) failed: %d\n", ptr, (int)size,
+             GetLastError());
 #elif defined(_3DS)
-   int ret = -1;
    if (ctr_svchack_successful)
    {
       unsigned int currentHandle;
@@ -461,9 +473,9 @@ int plat_mem_set_exec(void *ptr, size_t size)
    }
 
 #elif defined(VITA)
-   int ret = sceKernelOpenVMDomain();
+   ret = sceKernelOpenVMDomain();
 #else
-   int ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC);
+   ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC);
    if (ret != 0 && log_cb)
       log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, errno);
 #endif
@@ -512,7 +524,6 @@ void retro_set_environment(retro_environment_t cb)
       { "picodrive_sprlim",      "No sprite limit; disabled|enabled" },
       { "picodrive_ramcart",     "MegaCD RAM cart; disabled|enabled" },
       { "picodrive_region",      "Region; Auto|Japan NTSC|Japan PAL|US|Europe" },
-      { "picodrive_region_fps",  "Region FPS; Auto|NTSC|PAL" },
       { "picodrive_aspect",      "Core-provided aspect ratio; PAR|4/3|CRT" },
       { "picodrive_overscan",    "Show Overscan; disabled|enabled" },
 #ifdef DRC_SH2
@@ -1104,13 +1115,13 @@ void *retro_get_memory_data(unsigned type)
          if (PicoAHW & PAHW_MCD)
             data = Pico_mcd->bram;
          else
-            data = SRam.data;
+            data = Pico.sv.data;
          break;
       case RETRO_MEMORY_SYSTEM_RAM:
          if (PicoAHW & PAHW_SMS)
-            data = Pico.zram;
+            data = PicoMem.zram;
          else
-            data = Pico.ram;
+            data = PicoMem.ram;
          break;
       default:
          data = NULL;
@@ -1133,20 +1144,20 @@ size_t retro_get_memory_size(unsigned type)
             return 0x2000;
 
          if (Pico.m.frame_count == 0)
-            return SRam.size;
+            return Pico.sv.size;
 
          // if game doesn't write to sram, don't report it to
          // libretro so that RA doesn't write out zeroed .srm
-         for (i = 0, sum = 0; i < SRam.size; i++)
-            sum |= SRam.data[i];
+         for (i = 0, sum = 0; i < Pico.sv.size; i++)
+            sum |= Pico.sv.data[i];
 
-         return (sum != 0) ? SRam.size : 0;
+         return (sum != 0) ? Pico.sv.size : 0;
 
       case RETRO_MEMORY_SYSTEM_RAM:
          if (PicoAHW & PAHW_SMS)
             return 0x2000;
          else
-            return sizeof(Pico.ram);
+            return sizeof(PicoMem.ram);
 
       default:
          return 0;
@@ -1242,21 +1253,8 @@ static void update_variables(void)
          PicoRegionOverride = 8;
    }
 
-   int OldPicoRegionFPSOverride = PicoRegionFPSOverride;
-   var.value = NULL;
-   var.key = "picodrive_region_fps";
-   if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
-      if (strcmp(var.value, "Auto") == 0)
-         PicoRegionFPSOverride = 0;
-      else if (strcmp(var.value, "NTSC") == 0)
-         PicoRegionFPSOverride = 1;
-      else if (strcmp(var.value, "PAL") == 0)
-         PicoRegionFPSOverride = 2;
-   }
-
    // Update region, fps and sound flags if needed
-   if (PicoRegionOverride    != OldPicoRegionOverride ||
-       PicoRegionFPSOverride != OldPicoRegionFPSOverride)
+   if (Pico.rom && PicoRegionOverride != OldPicoRegionOverride)
    {
       PicoDetectRegion();
       PicoLoopPrepare();
@@ -1331,13 +1329,6 @@ void retro_run(void)
       vout_width, vout_height, vout_width * 2);
 }
 
-static void check_system_specs(void)
-{
-   /* TODO - set different performance level for 32X - 6 for ARM dynarec, higher for interpreter core */
-   unsigned level = 5;
-   environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
-}
-
 void retro_init(void)
 {
    struct retro_log_callback log;
@@ -1401,3 +1392,5 @@ void retro_deinit(void)
    vout_buf = NULL;
    PicoExit();
 }
+
+// vim:shiftwidth=3:ts=3:expandtab