(GX) Wii - platform_gx_exec.c accidentally got removed

dist-scripts/retroarch-wii-readme.txt

@@ -1,5 +1,5 @@
 ------------------------------------------------------------------------------
-RETROARCH WII - 0.9.8.4
+RETROARCH GX - WII - 0.9.8.4
 ------------------------------------------------------------------------------
 RetroConsole Level: 1
 Author: Themaister, Toad King, Squarepusher/Twin Aphex

frontend/platform/platform_gx_exec.c

@@ -0,0 +1,115 @@
+/*  RetroArch - A frontend for libretro.
+ *  Copyright (C) 2010-2013 - Hans-Kristian Arntzen
+ *  Copyright (C) 2011-2013 - Daniel De Matteis
+ * 
+ *  RetroArch is free software: you can redistribute it and/or modify it under the terms
+ *  of the GNU General Public License as published by the Free Software Found-
+ *  ation, either version 3 of the License, or (at your option) any later version.
+ *
+ *  RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ *  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ *  PURPOSE.  See the GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along with RetroArch.
+ *  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+
+#if defined(HW_RVL)
+#include <string.h>
+#include <fat.h>
+#include <gctypes.h>
+#include <ogc/cache.h>
+#include <ogc/lwp_threads.h>
+#include <ogc/system.h>
+#include <ogc/usbstorage.h>
+#include <sdcard/wiisd_io.h>
+
+#define EXECUTE_ADDR ((uint8_t *) 0x91800000)
+#define BOOTER_ADDR ((uint8_t *) 0x93000000)
+#define ARGS_ADDR ((uint8_t *) 0x93200000)
+
+extern uint8_t _binary_wii_app_booter_app_booter_bin_start[];
+extern uint8_t _binary_wii_app_booter_app_booter_bin_end[];
+#define booter_start _binary_wii_app_booter_app_booter_bin_start
+#define booter_end _binary_wii_app_booter_app_booter_bin_end
+
+#elif defined(HW_DOL)
+#include "../../ngc/sidestep.h"
+#endif
+
+#include "../../retroarch_logger.h"
+
+#ifdef HW_RVL
+// NOTE: this does not update the path to point to the new loading .dol file.
+// we only need it for keeping the current directory anyway.
+void dol_copy_argv_path(void)
+{
+   struct __argv *argv = (struct __argv *) ARGS_ADDR;
+   memset(ARGS_ADDR, 0, sizeof(struct __argv));
+   char *cmdline = (char *) ARGS_ADDR + sizeof(struct __argv);
+   argv->argvMagic = ARGV_MAGIC;
+   argv->commandLine = cmdline;
+   size_t len = strlen(__system_argv->argv[0]);
+   memcpy(cmdline, __system_argv->argv[0], ++len);
+   cmdline[len++] = 0;
+   cmdline[len++] = 0;
+   argv->length = len;
+   DCFlushRange(ARGS_ADDR, sizeof(struct __argv) + argv->length);
+}
+#endif
+
+// WARNING: after we move any data into EXECUTE_ADDR, we can no longer use any
+// heap memory and are restricted to the stack only
+static void rarch_console_exec(const char *path)
+{
+   RARCH_LOG("Attempt to load executable: [%s].\n", path);
+#if defined(HW_RVL)
+   FILE * fp = fopen(path, "rb");
+   if (fp == NULL)
+   {
+      RARCH_ERR("Could not open DOL file %s.\n", path);
+      return;
+   }
+
+   fseek(fp, 0, SEEK_END);
+   size_t size = ftell(fp);
+   fseek(fp, 0, SEEK_SET);
+   // try to allocate a buffer for it. if we can't, fail
+   void *dol = malloc(size);
+   if (!dol)
+   {
+      RARCH_ERR("Could not execute DOL file %s.\n", path);
+      fclose(fp);
+      return;
+   }
+
+   fread(dol, 1, size, fp);
+   fclose(fp);
+
+   fatUnmount("carda:");
+   fatUnmount("cardb:");
+   fatUnmount("sd:");
+   fatUnmount("usb:");
+   __io_wiisd.shutdown();
+   __io_usbstorage.shutdown();
+
+   // luckily for us, newlib's memmove doesn't allocate a seperate buffer for
+   // copying in situations of overlap, so it's safe to do this
+   memmove(EXECUTE_ADDR, dol, size);
+   DCFlushRange(EXECUTE_ADDR, size);
+
+   dol_copy_argv_path();
+
+   size_t booter_size = booter_end - booter_start;
+   memcpy(BOOTER_ADDR, booter_start, booter_size);
+   DCFlushRange(BOOTER_ADDR, booter_size);
+
+   RARCH_LOG("jumping to %08x\n", (unsigned) BOOTER_ADDR);
+   SYS_ResetSystem(SYS_SHUTDOWN,0,0);
+   __lwp_thread_stopmultitasking((void (*)(void)) BOOTER_ADDR);
+#elif defined(HW_DOL)
+   DOLtoARAM(path);
+#endif
+}