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FRT doesn't support pck embedding.

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Relintai 2024-04-20 11:36:11 +02:00
parent b734c2f67a
commit d17743975b
1 changed files with 3 additions and 137 deletions
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140
platform/frt/export/export.cpp
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@ -76,7 +76,6 @@ public:
virtual Error prepare_template(const Ref<EditorExportPreset> &p_preset, bool p_debug, const String &p_path, int p_flags);
virtual Error modify_template(const Ref<EditorExportPreset> &p_preset, bool p_debug, const String &p_path, int p_flags) { return OK; }
virtual Error export_project_data(const Ref<EditorExportPreset> &p_preset, bool p_debug, const String &p_path, int p_flags);
virtual Error fixup_embedded_pck(const String &p_path, int64_t p_embedded_start, int64_t p_embedded_size);
void set_extension(const String &p_extension, const String &p_feature_key = "default");
void set_name(const String &p_name);
@ -139,8 +138,6 @@ void EditorExportPlatformFRT::get_export_options(List<ExportOption> *r_options)
r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "binary_format/architecture", PROPERTY_HINT_ENUM, "arm32v6,arm32v7,arm64v8"), "arm32v6"));
r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "binary_format/embed_pck"), false));
r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "texture_format/bptc"), false));
r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "texture_format/s3tc"), true));
r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "texture_format/etc"), false));
@ -268,33 +265,14 @@ Error EditorExportPlatformFRT::prepare_template(const Ref<EditorExportPreset> &p
Error EditorExportPlatformFRT::export_project_data(const Ref<EditorExportPreset> &p_preset, bool p_debug, const String &p_path, int p_flags) {
String pck_path;
if (p_preset->get("binary_format/embed_pck")) {
pck_path = p_path;
} else {
pck_path = p_path.get_basename() + ".pck";
}
pck_path = p_path.get_basename() + ".pck";
Vector<SharedObject> so_files;
int64_t embedded_pos;
int64_t embedded_size;
Error err = save_pack(p_preset, pck_path, &so_files, p_preset->get("binary_format/embed_pck"), &embedded_pos, &embedded_size);
if (err == OK && p_preset->get("binary_format/embed_pck")) {
if (embedded_size >= 0x100000000) {
bool use64;
const String &arch = get_preset_arch(p_preset);
use64 = (arch == "arm64v8");
if (!use64) {
add_message(EXPORT_MESSAGE_ERROR, TTR("PCK Embedding"), TTR("On 32-bit exports the embedded PCK cannot be bigger than 4 GiB."));
return ERR_INVALID_PARAMETER;
}
}
err = fixup_embedded_pck(p_path, embedded_pos, embedded_size);
}
Error err = save_pack(p_preset, pck_path, &so_files, false, &embedded_pos, &embedded_size);
if (err == OK && !so_files.empty()) {
// If shared object files, copy them.
@ -403,118 +381,6 @@ EditorExportPlatformFRT::EditorExportPlatformFRT() {
chmod_flags = -1;
}
Error EditorExportPlatformFRT::fixup_embedded_pck(const String &p_path, int64_t p_embedded_start, int64_t p_embedded_size) {
// Patch the header of the "pck" section in the ELF file so that it corresponds to the embedded data
FileAccess *f = FileAccess::open(p_path, FileAccess::READ_WRITE);
if (!f) {
add_message(EXPORT_MESSAGE_ERROR, TTR("PCK Embedding"), vformat(TTR("Failed to open executable file \"%s\"."), p_path));
return ERR_CANT_OPEN;
}
// Read and check ELF magic number
{
uint32_t magic = f->get_32();
if (magic != 0x464c457f) { // 0x7F + "ELF"
f->close();
add_message(EXPORT_MESSAGE_ERROR, TTR("PCK Embedding"), TTR("Executable file header corrupted."));
return ERR_FILE_CORRUPT;
}
}
// Read program architecture bits from class field
int bits = f->get_8() * 32;
if (bits == 32 && p_embedded_size >= 0x100000000) {
f->close();
add_message(EXPORT_MESSAGE_ERROR, TTR("PCK Embedding"), TTR("32-bit executables cannot have embedded data >= 4 GiB."));
return ERR_INVALID_DATA;
}
// Get info about the section header table
int64_t section_table_pos;
int64_t section_header_size;
if (bits == 32) {
section_header_size = 40;
f->seek(0x20);
section_table_pos = f->get_32();
f->seek(0x30);
} else { // 64
section_header_size = 64;
f->seek(0x28);
section_table_pos = f->get_64();
f->seek(0x3c);
}
int num_sections = f->get_16();
int string_section_idx = f->get_16();
// Load the strings table
uint8_t *strings;
{
// Jump to the strings section header
f->seek(section_table_pos + string_section_idx * section_header_size);
// Read strings data size and offset
int64_t string_data_pos;
int64_t string_data_size;
if (bits == 32) {
f->seek(f->get_position() + 0x10);
string_data_pos = f->get_32();
string_data_size = f->get_32();
} else { // 64
f->seek(f->get_position() + 0x18);
string_data_pos = f->get_64();
string_data_size = f->get_64();
}
// Read strings data
f->seek(string_data_pos);
strings = (uint8_t *)memalloc(string_data_size);
if (!strings) {
f->close();
return ERR_OUT_OF_MEMORY;
}
f->get_buffer(strings, string_data_size);
}
// Search for the "pck" section
bool found = false;
for (int i = 0; i < num_sections; ++i) {
int64_t section_header_pos = section_table_pos + i * section_header_size;
f->seek(section_header_pos);
uint32_t name_offset = f->get_32();
if (strcmp((char *)strings + name_offset, "pck") == 0) {
// "pck" section found, let's patch!
if (bits == 32) {
f->seek(section_header_pos + 0x10);
f->store_32(p_embedded_start);
f->store_32(p_embedded_size);
} else { // 64
f->seek(section_header_pos + 0x18);
f->store_64(p_embedded_start);
f->store_64(p_embedded_size);
}
found = true;
break;
}
}
memfree(strings);
f->close();
if (!found) {
add_message(EXPORT_MESSAGE_ERROR, TTR("PCK Embedding"), TTR("Executable \"pck\" section not found."));
return ERR_FILE_CORRUPT;
}
return OK;
}
void register_frt_exporter() {
Ref<EditorExportPlatformFRT> platform;
platform.instance();