mirror of
https://github.com/CTCaer/hekate.git
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185526d134
BDK will allow developers to use the full collection of drivers, with limited editing, if any, for making payloads for Nintendo Switch. Using a single source for everything will also help decoupling Switch specific code and easily port it to other Tegra X1/X1+ platforms. And maybe even to lower targets. Everything is now centrilized into bdk folder. Every module or project can utilize it by simply including it. This is just the start and it will continue to improve.
120 lines
2.7 KiB
C
120 lines
2.7 KiB
C
/*
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* Copyright (c) 2018 M4xw
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* Copyright (c) 2018-2019 CTCaer
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* 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 <string.h>
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#include "ianos.h"
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#include "../../common/common_module.h"
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#include "../gfx/gfx.h"
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#include "../libs/elfload/elfload.h"
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#include "../mem/heap.h"
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#include "../storage/nx_sd.h"
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#include "../utils/types.h"
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#define IRAM_LIB_ADDR 0x4002B000
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#define DRAM_LIB_ADDR 0xE0000000
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extern heap_t _heap;
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void *elfBuf = NULL;
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void *fileBuf = NULL;
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static void _ianos_call_ep(moduleEntrypoint_t entrypoint, void *moduleConfig)
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{
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bdkParams_t bdkParameters = (bdkParams_t)malloc(sizeof(struct _bdkParams_t));
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bdkParameters->gfxCon = &gfx_con;
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bdkParameters->gfxCtx = &gfx_ctxt;
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bdkParameters->memcpy = (memcpy_t)&memcpy;
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bdkParameters->memset = (memset_t)&memset;
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bdkParameters->sharedHeap = &_heap;
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entrypoint(moduleConfig, bdkParameters);
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}
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static void *_ianos_alloc_cb(el_ctx *ctx, Elf_Addr phys, Elf_Addr virt, Elf_Addr size)
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{
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(void)ctx;
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(void)phys;
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(void)size;
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return (void *)virt;
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}
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static bool _ianos_read_cb(el_ctx *ctx, void *dest, size_t numberBytes, size_t offset)
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{
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(void)ctx;
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memcpy(dest, fileBuf + offset, numberBytes);
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return true;
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}
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//TODO: Support shared libraries.
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uintptr_t ianos_loader(char *path, elfType_t type, void *moduleConfig)
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{
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el_ctx ctx;
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uintptr_t epaddr = 0;
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if (!sd_mount())
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goto elfLoadFinalOut;
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// Read library.
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fileBuf = sd_file_read(path, NULL);
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if (!fileBuf)
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goto elfLoadFinalOut;
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ctx.pread = _ianos_read_cb;
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if (el_init(&ctx))
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goto elfLoadFinalOut;
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// Set our relocated library's buffer.
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switch (type & 0xFFFF)
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{
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case EXEC_ELF:
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case AR64_ELF:
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elfBuf = (void *)DRAM_LIB_ADDR;
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break;
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default:
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elfBuf = malloc(ctx.memsz); // Aligned to 0x10 by default.
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}
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if (!elfBuf)
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goto elfLoadFinalOut;
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// Load and relocate library.
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ctx.base_load_vaddr = ctx.base_load_paddr = (uintptr_t)elfBuf;
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if (el_load(&ctx, _ianos_alloc_cb))
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goto elfFreeOut;
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if (el_relocate(&ctx))
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goto elfFreeOut;
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// Launch.
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epaddr = ctx.ehdr.e_entry + (uintptr_t)elfBuf;
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moduleEntrypoint_t ep = (moduleEntrypoint_t)epaddr;
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_ianos_call_ep(ep, moduleConfig);
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elfFreeOut:
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free(fileBuf);
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elfBuf = NULL;
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fileBuf = NULL;
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elfLoadFinalOut:
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return epaddr;
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} |