mirror of
https://github.com/RKX1209/nsemu.git
synced 2024-05-11 09:05:21 -04:00
73 lines
2.1 KiB
C++
73 lines
2.1 KiB
C++
/* nsemu - LGPL - Copyright 2017 rkx1209<rkx1209dev@gmail.com> */
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#include "Nsemu.hpp"
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#include <lz4.h>
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NintendoObject::NintendoObject(string path) {
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fp.open (path.c_str (), ios::in | ios::binary);
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fp.seekg (0, ios_base::end);
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length = (uint32_t) fp.tellg ();
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fp.seekg (0);
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}
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NintendoObject::~NintendoObject() {
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fp.close ();
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}
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char *decompress(ifstream &fp, uint32_t offset, uint32_t csize, uint32_t usize) {
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fp.seekg (offset);
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char *buf = new char[csize];
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char *obuf = new char[usize];
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fp.read (buf, csize);
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assert (LZ4_decompress_safe (buf, obuf, csize, usize) == usize);
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delete[] buf;
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return obuf;
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}
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int Nso::load(Nsemu *nsemu) {
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NsoHeader hdr;
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fp.read ((char *) &hdr, sizeof(NsoHeader));
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if (hdr.magic != byte_swap32_str ("NSO0")) {
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return 0;
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}
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uint32_t size = hdr.dataLoc + hdr.dataSize + hdr.bssSize;
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if (size & 0xfff) {
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size = (size & ~0xfff) + 0x1000;
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}
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uint64_t base = 0;
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char *text = decompress (fp, hdr.textOff, hdr.rdataOff - hdr.textOff, hdr.textSize);
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if (!Memory::CopytoEmu (nsemu, (void *) text, base + hdr.textLoc, hdr.textSize)) {
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delete[] text;
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ns_abort ("Failed to copy to .text\n");
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}
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/* --- For test --- */
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uint8_t *txt_dump = new uint8_t[hdr.textSize];
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Memory::CopyfromEmu (nsemu, (void *) txt_dump, base + hdr.textLoc, hdr.textSize);
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bindump ((uint8_t*)text, 105);
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bindump (txt_dump, 105);
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/* ---------------- */
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delete[] text;
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ns_print(".text[0x%x] size = 0x%x\n", hdr.textOff, hdr.textSize);
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ns_print(".rdata[0x%x] size = 0x%x\n", hdr.rdataOff, hdr.rdataSize);
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ns_print(".data[0x%x] size = 0x%x\n", hdr.dataOff, hdr.dataSize);
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char *rdata = decompress (fp, hdr.rdataOff, hdr.dataOff - hdr.rdataOff, hdr.rdataSize);
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if (!Memory::CopytoEmu (nsemu, (void *) rdata, base + hdr.rdataLoc, hdr.rdataSize)) {
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delete[] rdata;
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ns_abort ("Failed to copy to .rdata\n");
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}
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delete[] rdata;
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char *data = decompress (fp, hdr.dataOff, length - hdr.dataOff, hdr.dataSize);
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if (!Memory::CopytoEmu (nsemu, (void *) data, base + hdr.dataLoc, hdr.dataSize)) {
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delete[] data;
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ns_abort ("Failed to copy to .data\n");
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}
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delete[] data;
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return size;
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}
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int Nro::load(Nsemu *nsemu) {
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return 0;
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}
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