mirror of
https://github.com/libretro/RetroArch.git
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308 lines
8.8 KiB
C
308 lines
8.8 KiB
C
/* adapted from https://github.com/dimok789/homebrew_launcher */
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/****************************************************************************
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*
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* Copyright (C) 2015 Dimok
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* 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
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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****************************************************************************/
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#include <stdio.h>
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#include <malloc.h>
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#include <string.h>
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#include <inttypes.h>
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#include <wiiu/os.h>
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#include "hbl.h"
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#ifdef WIIU_LOG_RPX
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#include "../verbosity.h"
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#endif
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#define MEM_AREA_TABLE ((s_mem_area*)(MEM_BASE + 0x1600))
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#define ELF_DATA_ADDR (*(volatile unsigned int*)(MEM_BASE + 0x1300 + 0x00))
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#define ELF_DATA_SIZE (*(volatile unsigned int*)(MEM_BASE + 0x1300 + 0x04))
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#define RPX_MAX_SIZE (*(volatile unsigned int*)(MEM_BASE + 0x1300 + 0x0C))
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#define RPX_MAX_CODE_SIZE (*(volatile unsigned int*)(MEM_BASE + 0x1300 + 0x10))
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#define APP_BASE_MEM ((unsigned char*)(MEM_BASE + 0x2000))
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typedef struct _s_mem_area
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{
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unsigned int address;
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unsigned int size;
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struct _s_mem_area *next;
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} s_mem_area;
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void SC0x25_KernelCopyData(unsigned int addr, unsigned int src, unsigned int len);
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typedef struct _memory_values_t
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{
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unsigned int start_address;
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unsigned int end_address;
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} memory_values_t;
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static const memory_values_t mem_vals_540[] =
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{
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{ 0x2E609EFC, 0x2FF82000 }, /* 26083 kB */
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{ 0x29030800, 0x293F6000 }, /* 3864 kB */
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{ 0x288EEC30, 0x28B06800 }, /* 2144 kB */
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{ 0x2D3B966C, 0x2D894000 }, /* 4971 kB */
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{ 0x2CB56370, 0x2D1EF000 }, /* 6756 kB */
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{ 0x2D8AD3D8, 0x2E000000 }, /* 7499 kB */
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{ 0x2970200C, 0x298B9800 }, /* 1759 kB */
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{ 0x2A057B68, 0x2A1B9000 }, /* 1414 kB */
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{ 0x2ABBCC4C, 0x2ACB9000 }, /* 1010 kB */
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{0, 0}
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};
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static inline void memoryAddArea(int start, int end, int cur_index)
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{
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/* Create and copy new memory area */
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s_mem_area *mem_area = MEM_AREA_TABLE;
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mem_area[cur_index].address = start;
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mem_area[cur_index].size = end - start;
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mem_area[cur_index].next = 0;
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/* Fill pointer to this area in the previous area */
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if (cur_index > 0)
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mem_area[cur_index - 1].next = &mem_area[cur_index];
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}
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void *getApplicationEndAddr(void)
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{
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extern u32 _end[];
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if ((u32)_end >= 0x01000000)
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return APP_BASE_MEM;
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return _end;
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}
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/* Create memory areas arrays */
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static void memoryInitAreaTable(u32 args_size)
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{
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int i = 0;
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u32 ApplicationMemoryEnd = (u32)getApplicationEndAddr() + args_size;
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/* This one seems to be available on every firmware and therefore its our code area but also our main RPX area behind our code */
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/* 22876 kB - our application ok */
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memoryAddArea(ApplicationMemoryEnd + 0x30000000, 0x30000000 + 0x01E20000, 0);
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const memory_values_t * mem_vals = mem_vals_540;
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/* Fill entries */
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while (mem_vals[i].start_address)
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{
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memoryAddArea(mem_vals[i].start_address, mem_vals[i].end_address, i + 1);
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i++;
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}
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}
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static int HomebrewCopyMemory(u8 *address, u32 bytes, u32 args_size)
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{
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args_size += 0x7;
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args_size &= ~0x7;
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if (args_size > 0x10000)
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args_size = 0x10000;
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memoryInitAreaTable(args_size);
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RPX_MAX_SIZE = 0x40000000;
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RPX_MAX_CODE_SIZE = 0x03000000;
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/* check if we load an RPX or an ELF */
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if (*(u16 *)&address[7] != 0xCAFE)
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{
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/* assume ELF */
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ELF_DATA_ADDR = (u32)getApplicationEndAddr() + args_size;
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if (ELF_DATA_ADDR >= 0x01000000)
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return -1;
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}
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else
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{
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/* RPX */
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ELF_DATA_ADDR = MEM_AREA_TABLE->address;
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}
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/*! if we load an ELF file */
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if (ELF_DATA_ADDR < 0x01000000)
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{
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if ((ELF_DATA_ADDR + bytes) > 0x01000000)
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return -1;
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memcpy((void *)ELF_DATA_ADDR, address, bytes);
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ELF_DATA_SIZE = bytes;
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}
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else
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{
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u32 done = 0;
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u32 mapPosition = 0;
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DCFlushRange(address, bytes);
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u32 addressPhysical = (u32)OSEffectiveToPhysical(address);
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s_mem_area *mem_map = MEM_AREA_TABLE;
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while ((done < bytes) && mem_map)
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{
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if (mapPosition >= mem_map->size)
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{
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mem_map = mem_map->next;
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if (!mem_map)
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return -1;
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mapPosition = 0;
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}
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u32 blockSize = bytes - done;
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if ((mapPosition + blockSize) > mem_map->size)
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blockSize = mem_map->size - mapPosition;
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SC0x25_KernelCopyData(mem_map->address + mapPosition, (addressPhysical + done), blockSize);
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mapPosition += blockSize;
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done += blockSize;
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}
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ELF_DATA_SIZE = done;
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}
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return bytes;
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}
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#ifdef WIIU_LOG_RPX
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#define LINE_LEN 32
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/**
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* This is called between when the RPX is read off the storage medium and
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* when it is sent to the loader. It prints a hexdump to the logger, which
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* can then be parsed out by a script.
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*
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* If we can at least semi-reliably generate the "System Memory Error", this
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* can be useful in identifying if the problem is corrupt file i/o vs in-memory
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* corruption.
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*/
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void log_rpx(const char *filepath, unsigned char *buf, size_t len)
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{
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int i;
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unsigned int line_buffer[LINE_LEN];
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RARCH_LOG("=== BEGIN file=%s size=%d ===\n", filepath, len);
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for (i = 0; i < len; i++)
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{
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int offset = i % LINE_LEN;
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line_buffer[offset] = buf[i];
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if (offset == (LINE_LEN-1))
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{
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RARCH_LOG("%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n",
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line_buffer[0], line_buffer[1], line_buffer[2], line_buffer[3],
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line_buffer[4], line_buffer[5], line_buffer[6], line_buffer[7],
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line_buffer[8], line_buffer[9], line_buffer[10], line_buffer[11],
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line_buffer[12], line_buffer[13], line_buffer[14], line_buffer[15],
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line_buffer[16], line_buffer[17], line_buffer[18], line_buffer[19],
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line_buffer[20], line_buffer[21], line_buffer[22], line_buffer[23],
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line_buffer[24], line_buffer[25], line_buffer[26], line_buffer[27],
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line_buffer[28], line_buffer[29], line_buffer[30], line_buffer[31]);
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}
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}
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if ((len % LINE_LEN) != 0)
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{
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for (i = (LINE_LEN - (len % LINE_LEN)); i < LINE_LEN; i++)
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line_buffer[i] = 0;
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RARCH_LOG("%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n",
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line_buffer[0], line_buffer[1], line_buffer[2], line_buffer[3],
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line_buffer[4], line_buffer[5], line_buffer[6], line_buffer[7],
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line_buffer[8], line_buffer[9], line_buffer[10], line_buffer[11],
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line_buffer[16], line_buffer[17], line_buffer[18], line_buffer[19],
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line_buffer[20], line_buffer[21], line_buffer[22], line_buffer[23],
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line_buffer[24], line_buffer[25], line_buffer[26], line_buffer[27],
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line_buffer[28], line_buffer[29], line_buffer[30], line_buffer[31]);
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}
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RARCH_LOG("=== END %s ===\n", filepath);
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}
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#endif
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int HBL_loadToMemory(const char *file_path, u32 args_size)
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{
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int ret;
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FILE *fp;
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size_t buffer_size;
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unsigned char *buffer = NULL;
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u32 bytes_read = 0;
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u32 file_size = 0;
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if (!file_path || !*file_path)
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return -1;
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if (!(fp = fopen(file_path, "rb")))
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return -1;
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fseek(fp, 0, SEEK_END);
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file_size = ftell(fp);
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fseek(fp, 0, SEEK_SET);
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buffer_size = (file_size + 0x3f) & ~0x3f;
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buffer = (unsigned char *)memalign(0x40, buffer_size);
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if (!buffer)
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{
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fclose(fp);
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return -1;
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}
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memset(buffer, 0, buffer_size);
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/* Copy rpl in memory */
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while (bytes_read < file_size)
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{
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int ret;
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u32 block_size = 0x8000;
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if (block_size > (file_size - bytes_read))
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block_size = file_size - bytes_read;
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if ((ret = fread(buffer + bytes_read, 1, block_size, fp)) <= 0)
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break;
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bytes_read += ret;
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}
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fclose(fp);
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if (bytes_read != file_size)
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{
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free(buffer);
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return -1;
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}
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#ifdef WIIU_LOG_RPX
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log_rpx(file_path, buffer, bytes_read);
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#endif
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ret = HomebrewCopyMemory(buffer, bytes_read, args_size);
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free(buffer);
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if (ret < 0)
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return -1;
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return file_size;
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}
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