mirror of
https://github.com/suchmememanyskill/TegraExplorer.git
synced 2024-11-09 21:51:48 +00:00
131 lines
No EOL
2.9 KiB
C
131 lines
No EOL
2.9 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 "../utils/types.h"
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#include "../libs/elfload/elfload.h"
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#include "../../common/common_module.h"
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#include "../mem/heap.h"
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#include "../gfx/gfx.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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extern void *sd_file_read(const char *path, u32 *fsize);
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extern bool sd_mount();
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extern void sd_unmount();
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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(bool sdmount, char *path, elfType_t type, void *moduleConfig)
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{
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uintptr_t epaddr = 0;
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if (sdmount)
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{
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if (!sd_mount())
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goto elfLoadFinalOut;
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}
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fileBuf = sd_file_read(path, NULL);
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if (sdmount)
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sd_unmount();
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if (!fileBuf)
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goto elfLoadFinalOut;
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el_ctx ctx;
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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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sd_unmount();
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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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} |