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