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Write in data in the order that loader expects it

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This commit is contained in:
shinyquagsire23 2016-07-15 20:32:12 -07:00
parent 74de2a77dc
commit 6825b2b108
1 changed files with 69 additions and 13 deletions
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82
tools/elf2rpl/main.cpp
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@ -928,7 +928,74 @@ write(ElfFile &file, const std::string &filename)
auto shoff = align_up(sizeof(elf::Header), 64); auto shoff = align_up(sizeof(elf::Header), 64);
auto dataOffset = align_up(shoff + outSections.size() * sizeof(elf::SectionHeader), 64); auto dataOffset = align_up(shoff + outSections.size() * sizeof(elf::SectionHeader), 64);
// Add CRC and FileInfo sections first
for (auto &section : outSections) { for (auto &section : outSections) {
if (section->header.type != elf::SHT_RPL_CRCS && section->header.type != elf::SHT_RPL_FILEINFO) {
continue;
}
if (section->header.type != elf::SHT_NOBITS) {
section->header.size = section->data.size();
}
if (!section->data.empty()) {
section->header.offset = dataOffset;
dataOffset = align_up(section->header.offset + section->data.size(), 64);
} else {
section->header.offset = 0;
}
}
// Add data sections next
for (auto &section : outSections) {
if(section->header.offset != -1) {
continue;
}
if (section->header.addr < DataAddress || section->header.addr >= WiiuLoadAddress) {
continue;
}
if (section->header.type != elf::SHT_NOBITS) {
section->header.size = section->data.size();
}
if (!section->data.empty()) {
section->header.offset = dataOffset;
dataOffset = align_up(section->header.offset + section->data.size(), 64);
} else {
section->header.offset = 0;
}
}
// Add load sections next
for (auto &section : outSections) {
if(section->header.offset != -1) {
continue;
}
if (section->header.addr < WiiuLoadAddress) {
continue;
}
if (section->header.type != elf::SHT_NOBITS) {
section->header.size = section->data.size();
}
if (!section->data.empty()) {
section->header.offset = dataOffset;
dataOffset = align_up(section->header.offset + section->data.size(), 64);
} else {
section->header.offset = 0;
}
}
// Everything else
for (auto &section : outSections) {
if(section->header.offset != -1) {
continue;
}
if (section->header.type != elf::SHT_NOBITS) { if (section->header.type != elf::SHT_NOBITS) {
section->header.size = section->data.size(); section->header.size = section->data.size();
} }
@ -945,17 +1012,6 @@ write(ElfFile &file, const std::string &filename)
std::ofstream out { filename, std::ofstream::binary }; std::ofstream out { filename, std::ofstream::binary };
std::vector<char> padding; std::vector<char> padding;
auto padFileToOffset = [&out, &padding](auto offset) {
auto pos = static_cast<size_t>(out.tellp());
if (pos < offset) {
padding.resize(offset - pos, 0);
out.write(padding.data(), padding.size());
} else if (pos > offset) {
throw std::logic_error("You dumb person");
}
};
if (!out.is_open()) { if (!out.is_open()) {
std::cout << "Could not open " << filename << " for writing" << std::endl; std::cout << "Could not open " << filename << " for writing" << std::endl;
return false; return false;
@ -984,7 +1040,7 @@ write(ElfFile &file, const std::string &filename)
out.write(reinterpret_cast<char *>(&header), sizeof(elf::Header)); out.write(reinterpret_cast<char *>(&header), sizeof(elf::Header));
// Write section headers // Write section headers
padFileToOffset(header.shoff); out.seekp(header.shoff.value());
for (auto &section : outSections) { for (auto &section : outSections) {
out.write(reinterpret_cast<char *>(&section->header), sizeof(elf::SectionHeader)); out.write(reinterpret_cast<char *>(&section->header), sizeof(elf::SectionHeader));
@ -993,7 +1049,7 @@ write(ElfFile &file, const std::string &filename)
// Write section data // Write section data
for (auto &section : outSections) { for (auto &section : outSections) {
if (!section->data.empty()) { if (!section->data.empty()) {
padFileToOffset(section->header.offset); out.seekp(section->header.offset.value());
out.write(section->data.data(), section->data.size()); out.write(section->data.data(), section->data.size());
} }
} }