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Merge pull request #10 from shinyquagsire23/elf2rpl-fixes

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Collective fixes for elf2rpl
This commit is contained in:
James 2016-07-17 22:37:11 +01:00 committed by GitHub
commit 2c69f7d9be
1 changed files with 51 additions and 7 deletions
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58
tools/elf2rpl/main.cpp
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@ -543,6 +543,7 @@ write(ElfFile &file, const std::string &filename)
out->header.addralign = 256;
} else if (section->address == DataAddress) {
out->header.addralign = 4096;
out->header.flags |= elf::SHF_WRITE; // .rodata needs to be writable?
} else {
out->header.addralign = 32;
}
@ -595,9 +596,27 @@ write(ElfFile &file, const std::string &filename)
}
}
// Create RPL import sections, .fimport_*, .dimport_*
// Calculate sizes of symbol/string tables so RPL imports are placed after them
auto loadAddress = 0xC0000000;
auto predictStrTabSize = 1;
auto predictSymTabSize = 1;
auto predictShstrTabSize = 1;
for (auto &symbol : file.symbols) {
predictStrTabSize += symbol->name.size() + 1;
predictSymTabSize += sizeof(elf::Symbol);
}
for (auto &section : outSections) {
predictShstrTabSize += section->name.size() + 1;
}
predictStrTabSize = align_up(predictStrTabSize, 0x10);
predictSymTabSize = align_up(predictSymTabSize, 0x10);
predictShstrTabSize = align_up(predictShstrTabSize, 0x10);
loadAddress += predictStrTabSize + predictSymTabSize + predictShstrTabSize;
// Create RPL import sections, .fimport_*, .dimport_*
for (auto &lib : file.rplImports) {
auto out = new OutputSection();
out->header.name = -1;
@ -635,6 +654,14 @@ write(ElfFile &file, const std::string &filename)
sectionSymbolItr = addSection(file, outSections, sectionSymbolItr, out);
}
// Prune out unneeded symbols
for (auto i = 0u; i < file.symbols.size(); ++i) {
if (!file.symbols[i]->name.empty() && file.symbols[i]->type == elf::STT_NOTYPE) {
file.symbols.erase(file.symbols.begin() + i);
i--;
}
}
// NOTICE: FROM NOW ON DO NOT MODIFY mSymbols
// Convert relocations
@ -820,15 +847,17 @@ write(ElfFile &file, const std::string &filename)
}
}
loadAddress = 0xC0000000;
// Update symtab, strtab, shstrtab section addresses
symTabSection->header.addr = loadAddress;
symTabSection->header.size = symTabSection->data.size();
loadAddress = align_up(symTabSection->header.addr + symTabSection->header.size, 4);
loadAddress = align_up(symTabSection->header.addr + predictSymTabSize, 16);
strTabSection->header.addr = loadAddress;
strTabSection->header.size = strTabSection->data.size();
loadAddress = align_up(strTabSection->header.addr + strTabSection->header.size, 4);
loadAddress = align_up(strTabSection->header.addr + predictStrTabSize, 16);
shStrTabSection->header.addr = loadAddress;
shStrTabSection->header.size = shStrTabSection->data.size();
@ -853,7 +882,7 @@ write(ElfFile &file, const std::string &filename)
fileInfo.dataAlign = 4096;
fileInfo.loadSize = 0;
fileInfo.loadAlign = 4;
fileInfo.tempSize = 0; // TODO: Figure out what to do with temp size
fileInfo.tempSize = 0;
fileInfo.trampAdjust = 0;
fileInfo.trampAddition = 0;
fileInfo.sdaBase = 0;
@ -881,14 +910,29 @@ write(ElfFile &file, const std::string &filename)
}
if (section->header.addr >= CodeAddress && section->header.addr < DataAddress) {
fileInfo.textSize += align_up(size, fileInfo.textAlign);
auto val = section->header.addr.value() + section->header.size.value() - CodeAddress;
if(val > fileInfo.textSize) {
fileInfo.textSize = val;
}
} else if (section->header.addr >= DataAddress && section->header.addr < WiiuLoadAddress) {
fileInfo.dataSize += align_up(size, fileInfo.dataAlign);
auto val = section->header.addr.value() + section->header.size.value() - DataAddress;
if(val > fileInfo.dataSize) {
fileInfo.dataSize = val;
}
} else if (section->header.addr >= WiiuLoadAddress) {
fileInfo.loadSize += align_up(size, fileInfo.loadAlign);
auto val = section->header.addr.value() + section->header.size.value() - WiiuLoadAddress;
if(val > fileInfo.loadSize) {
fileInfo.loadSize = val;
}
} else if (section->header.type == elf::SHT_RELA) {
fileInfo.tempSize += size;
}
}
//TODO: These were calculated based on observation, however some games differ.
fileInfo.sdaBase = align_up(DataAddress + fileInfo.dataSize + fileInfo.heapSize, 64);
fileInfo.sda2Base = align_up(DataAddress + fileInfo.heapSize, 64);
char *fileInfoData = reinterpret_cast<char *>(&fileInfo);
fileInfoSection->data.insert(fileInfoSection->data.end(), fileInfoData, fileInfoData + sizeof(elf::RplFileInfo));