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add xbe patch translator shell

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This commit is contained in:
Martin Michelsen
2024-02-25 17:21:41 -08:00
parent e2e5875c8d
commit 79f85f46dc
4 changed files with 256 additions and 4 deletions
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src/ARCodeTranslator.cc
+242 -3
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@@ -5,6 +5,7 @@
#include <phosg/Filesystem.hh>
#include <phosg/Strings.hh>
#include <resource_file/ExecutableFormats/DOLFile.hh>
#include <resource_file/ExecutableFormats/XBEFile.hh>
using namespace std;
@@ -63,11 +64,11 @@ public:
}
void set_source_file(const string& filename) {
this->src_filename = filename;
this->src_file = files.at(this->src_filename);
this->src_file = this->files.at(this->src_filename);
}
void find_rtoc_global_regs() const {
for (const auto& it : files) {
for (const auto& it : this->files) {
bool r2_high_found = false;
bool r2_low_found = false;
bool r13_high_found = false;
@@ -258,7 +259,7 @@ public:
}
unordered_map<string, uint32_t> results;
for (const auto& it : files) {
for (const auto& it : this->files) {
if (it.second == this->src_file) {
log.info("(%s) %08" PRIX32 " (from source)", it.first.c_str(), src_addr);
results.emplace(it.first, src_addr);
@@ -349,6 +350,231 @@ private:
shared_ptr<const DOLFile> src_file;
};
class XBEPatchTranslator {
public:
enum class ExpandMethod {
FORWARD = 0,
BACKWARD,
BOTH,
};
static const char* name_for_expand_method(ExpandMethod method) {
switch (method) {
case ExpandMethod::FORWARD:
return "FORWARD";
case ExpandMethod::BACKWARD:
return "BACKWARD";
case ExpandMethod::BOTH:
return "BOTH";
default:
throw logic_error("invalid expand method");
}
}
XBEPatchTranslator(const string& directory)
: log("[xbe-trans] "),
directory(directory) {
while (ends_with(this->directory, "/")) {
this->directory.pop_back();
}
for (const auto& filename : list_directory(this->directory)) {
if (ends_with(filename, ".xbe")) {
string name = filename.substr(0, filename.size() - 4);
string path = directory + "/" + filename;
this->files.emplace(name, make_shared<XBEFile>(path.c_str()));
this->log.info("Loaded %s", name.c_str());
}
}
}
~XBEPatchTranslator() = default;
const string& get_source_filename() const {
return this->src_filename;
}
void set_source_file(const string& filename) {
this->src_filename = filename;
this->src_file = this->files.at(this->src_filename);
}
uint32_t find_match(
shared_ptr<const XBEFile> dest_file,
uint32_t src_address,
uint32_t src_size,
ExpandMethod expand_method) const {
if (!this->src_file) {
throw runtime_error("no source file selected");
}
const XBEFile::Section* src_section = nullptr;
for (const auto& sec : this->src_file->sections) {
if (src_address >= sec.addr && src_address < sec.addr + sec.file_size) {
src_section = &sec;
break;
}
}
if (!src_section) {
throw runtime_error("source address not within any section");
}
const char* method_token = this->name_for_expand_method(expand_method);
size_t src_offset = src_address - src_section->addr;
size_t src_bytes_available_before = src_offset;
size_t src_bytes_available_after = src_section->file_size - src_offset - src_size;
this->log.info("(find_match/%s) Source offset = %08zX with %zX/%zX bytes available before/after",
method_token, src_offset, src_bytes_available_before, src_bytes_available_after);
size_t match_bytes_before = 0;
size_t match_bytes_after = 0;
while (match_bytes_before + match_bytes_after + src_size < 0x100) {
size_t num_matches = 0;
size_t last_match_address = 0;
size_t match_length = match_bytes_before + match_bytes_after + src_size;
auto src_r = this->src_file->read_from_addr(src_section->addr + src_offset - match_bytes_before, match_length);
for (const auto& dest_section : dest_file->sections) {
for (size_t dest_match_offset = 0; dest_match_offset + match_length <= dest_section.file_size; dest_match_offset++) {
src_r.go(0);
StringReader dest_r = dest_file->read_from_addr(dest_section.addr + dest_match_offset, match_length);
size_t z;
for (z = 0; z < match_length; z++) {
uint8_t src_data = src_r.get_u8();
uint8_t dest_data = dest_r.get_u8();
if (src_data != dest_data) {
break;
}
}
if (z == match_length) {
num_matches++;
last_match_address = dest_section.addr + dest_match_offset + match_bytes_before;
}
}
}
this->log.info("(find_match/%s) For match length %zX, %zu matches found", method_token, match_length, num_matches);
if (num_matches == 1) {
return last_match_address;
} else if (num_matches == 0) {
throw runtime_error("did not find exactly one match");
}
bool can_expand_backward = false;
bool can_expand_forward = false;
switch (expand_method) {
case ExpandMethod::BACKWARD:
can_expand_backward = (src_bytes_available_before > match_bytes_before);
break;
case ExpandMethod::FORWARD:
can_expand_forward = (src_bytes_available_after > match_bytes_after);
break;
case ExpandMethod::BOTH:
can_expand_backward = (src_bytes_available_before > match_bytes_before);
can_expand_forward = (src_bytes_available_after > match_bytes_after);
break;
default:
throw logic_error("invalid expand method");
}
if (!can_expand_backward && !can_expand_forward) {
throw runtime_error("no further expansion is allowed");
}
if (can_expand_backward) {
match_bytes_before++;
}
if (can_expand_forward) {
match_bytes_after++;
}
}
throw runtime_error("scan field too long; too many matches");
}
void find_all_matches(uint32_t src_addr, uint32_t src_size) const {
if (!this->src_file) {
throw runtime_error("no source file selected");
}
unordered_map<string, uint32_t> results;
for (const auto& it : files) {
if (it.second == this->src_file) {
log.info("(%s) %08" PRIX32 " (from source)", it.first.c_str(), src_addr);
results.emplace(it.first, src_addr);
} else {
array<future<uint32_t>, 3> futures;
static const array<ExpandMethod, 3> methods = {
ExpandMethod::FORWARD,
ExpandMethod::BACKWARD,
ExpandMethod::BOTH,
};
for (size_t z = 0; z < methods.size(); z++) {
futures[z] = async(&XBEPatchTranslator::find_match, this, it.second, src_addr, src_size, methods[z]);
}
unordered_set<uint32_t> match_addrs;
for (size_t z = 0; z < futures.size(); z++) {
const char* method_name = this->name_for_expand_method(methods[z]);
try {
uint32_t ret = futures[z].get();
log.info("(%s) (%s) %08" PRIX32, it.first.c_str(), method_name, ret);
match_addrs.emplace(ret);
} catch (const exception& e) {
log.error("(%s) (%s) failed: %s", it.first.c_str(), method_name, e.what());
}
}
if (match_addrs.empty()) {
log.error("(%s) no match found", it.first.c_str());
} else if (match_addrs.size() > 1) {
log.error("(%s) different matches found by different methods", it.first.c_str());
} else {
results.emplace(it.first, *match_addrs.begin());
}
}
}
for (const auto& it : results) {
fprintf(stdout, "%s => %08" PRIX32 "\n", it.first.c_str(), it.second);
}
}
void handle_command(const string& command) {
auto tokens = split(command, ' ');
if (tokens.empty()) {
throw runtime_error("no command given");
}
strip_trailing_whitespace(tokens[tokens.size() - 1]);
if (tokens[0] == "use") {
this->set_source_file(tokens.at(1));
} else if (tokens[0] == "match") {
this->find_all_matches(stoul(tokens.at(1), nullptr, 16), stoul(tokens.at(2), nullptr, 16));
} else if (!tokens[0].empty()) {
throw runtime_error("unknown command");
}
}
void run_shell() {
while (!feof(stdin)) {
if (!this->src_filename.empty()) {
fprintf(stdout, "ar-trans:%s/%s> ", this->directory.c_str(), this->src_filename.c_str());
} else {
fprintf(stdout, "ar-trans:%s> ", this->directory.c_str());
}
fflush(stdout);
string command = fgets(stdin);
try {
this->handle_command(command);
} catch (const exception& e) {
this->log.error("Failed: %s", e.what());
}
}
fputc('\n', stdout);
}
private:
PrefixedLogger log;
string directory;
unordered_map<string, shared_ptr<const XBEFile>> files;
string src_filename;
shared_ptr<const XBEFile> src_file;
};
void run_ar_code_translator(const std::string& directory, const std::string& use_filename, const std::string& command) {
ARCodeTranslator trans(directory);
if (!use_filename.empty()) {
@@ -362,6 +588,19 @@ void run_ar_code_translator(const std::string& directory, const std::string& use
}
}
void run_xbe_patch_translator(const std::string& directory, const std::string& use_filename, const std::string& command) {
XBEPatchTranslator trans(directory);
if (!use_filename.empty()) {
trans.set_source_file(use_filename);
}
if (!command.empty()) {
trans.handle_command(command);
} else {
trans.run_shell();
}
}
vector<pair<uint32_t, string>> diff_dol_files(const string& a_filename, const string& b_filename) {
DOLFile a(a_filename.c_str());
DOLFile b(b_filename.c_str());