mirror of
https://github.com/open-goal/jak-project.git
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4d634cf50d
* update refs * first pass * update refs 2 * update * update * update * stuff and things * accidentally wiped this * fancy decomp for static sound specs * clang * 5 more refs
1784 lines
72 KiB
C++
1784 lines
72 KiB
C++
#include <algorithm>
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#include "data_decompile.h"
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#include "third-party/fmt/core.h"
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#include "common/type_system/Type.h"
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#include "common/goos/PrettyPrinter.h"
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#include "common/util/math_util.h"
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#include "common/log/log.h"
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#include "common/util/print_float.h"
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#include "decompiler/ObjectFile/LinkedObjectFile.h"
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#include "decompiler/IR2/Form.h"
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#include "decompiler/analysis/final_output.h"
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#include "decompiler/util/sparticle_decompile.h"
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#include "common/util/Assert.h"
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namespace decompiler {
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/*!
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* Entry point from the decompiler to decompile data.
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*/
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goos::Object decompile_at_label_with_hint(const LabelInfo& hint,
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const DecompilerLabel& label,
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const std::vector<DecompilerLabel>& labels,
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const std::vector<std::vector<LinkedWord>>& words,
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DecompilerTypeSystem& dts,
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const LinkedObjectFile* file) {
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const auto& type = hint.result_type;
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if (!hint.array_size.has_value()) {
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// if we don't have an array size, treat it as just a normal type.
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if (hint.is_value) {
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throw std::runtime_error(fmt::format(
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"Label {} was marked as a value, but is being decompiled as a reference.", hint.name));
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}
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return decompile_at_label(type, label, labels, words, dts.ts, file);
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}
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if (type.base_type() == "pointer") {
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if (hint.is_value) {
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throw std::runtime_error(fmt::format(
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"Label {} was marked as a value, but is being decompiled as a reference.", hint.name));
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}
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auto field_type_info = dts.ts.lookup_type(type.get_single_arg());
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if (field_type_info->is_reference()) {
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throw std::runtime_error(
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fmt::format("Type {} label {} is not yet supported by the data decompiler.", type.print(),
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hint.name));
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} else {
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auto stride = field_type_info->get_size_in_memory();
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int word_count = ((stride * (*hint.array_size)) + 3) / 4;
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std::vector<LinkedWord> obj_words;
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obj_words.insert(obj_words.begin(),
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words.at(label.target_segment).begin() + (label.offset / 4),
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words.at(label.target_segment).begin() + (label.offset / 4) + word_count);
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return decompile_value_array(type.get_single_arg(), field_type_info, *hint.array_size, stride,
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0, obj_words, dts.ts);
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}
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}
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if (type.base_type() == "inline-array") {
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if (hint.is_value) {
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throw std::runtime_error(fmt::format(
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"Label {} was marked as a value, but is being decompiled as a reference.", hint.name));
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}
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auto field_type_info = dts.ts.lookup_type(type.get_single_arg());
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if (!field_type_info->is_reference()) {
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throw std::runtime_error(
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fmt::format("Type {} for label {} is invalid, the element type is not inlineable.",
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hint.result_type.print(), hint.name));
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} else {
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// it's an inline array. let's figure out the len and stride
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auto len = *hint.array_size;
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// TODO - having this logic here isn't great.
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auto stride = align(field_type_info->get_size_in_memory(),
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field_type_info->get_inline_array_stride_alignment());
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fmt::print("decompiler {} stride {} {} = {}\n", field_type_info->get_name(),
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field_type_info->get_size_in_memory(),
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field_type_info->get_inline_array_stride_alignment(),
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align(field_type_info->get_size_in_memory(),
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field_type_info->get_inline_array_stride_alignment()));
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if (dynamic_cast<BasicType*>(field_type_info)) {
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throw std::runtime_error("Plan basic arrays not supported yet");
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// I just want to double check offsets....
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}
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std::vector<goos::Object> array_def = {pretty_print::to_symbol(fmt::format(
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"new 'static 'inline-array {} {}", type.get_single_arg().print(), *hint.array_size))};
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for (int elt = 0; elt < len; elt++) {
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DecompilerLabel fake_label;
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fake_label.target_segment = label.target_segment;
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fake_label.offset = label.offset + field_type_info->get_offset() + stride * elt;
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fake_label.name = fmt::format("fake-label-{}-elt-{}", type.get_single_arg().print(), elt);
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array_def.push_back(
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decompile_at_label(type.get_single_arg(), fake_label, labels, words, dts.ts, file));
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}
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return pretty_print::build_list(array_def);
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}
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}
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throw std::runtime_error(fmt::format(
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"Type `{}` with length {} is not yet supported by the data decompiler. (label {})",
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hint.result_type.print(), *hint.array_size, hint.name));
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}
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/*!
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* Attempt to determine the type of this label. This does not make sure that the type system
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* actually knows about the type. If the thing is not a basic or pair, it will fail.
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*/
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std::optional<TypeSpec> get_type_of_label(const DecompilerLabel& label,
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const std::vector<std::vector<LinkedWord>>& words) {
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if ((label.offset % 8) == 2) {
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return TypeSpec("pair");
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}
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// try to guess the type by looking for a type pointer.
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if (label.offset < 4) {
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return {};
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}
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if ((label.offset % 8) == 4) {
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auto type_ptr_word_idx = (label.offset / 4) - 1;
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auto& type_ptr = words.at(label.target_segment).at(type_ptr_word_idx);
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if (type_ptr.kind() != LinkedWord::TYPE_PTR) {
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return {};
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}
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if (type_ptr.symbol_name() == "array") {
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auto content_type_ptr_word_idx = type_ptr_word_idx + 3;
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auto& content_type_ptr = words.at(label.target_segment).at(content_type_ptr_word_idx);
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if (content_type_ptr.kind() != LinkedWord::TYPE_PTR) {
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return {};
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}
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return TypeSpec("array", {TypeSpec(content_type_ptr.symbol_name())});
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}
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return TypeSpec(type_ptr.symbol_name());
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} else {
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return {};
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}
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}
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/*!
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* Attempt to decompile data at the given label, without knowing the type. This can only succeed
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* if the object is a basic or pair, and is intended to save the user time in these cases,
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* or even be run automatically.
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*/
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goos::Object decompile_at_label_guess_type(const DecompilerLabel& label,
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const std::vector<DecompilerLabel>& labels,
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const std::vector<std::vector<LinkedWord>>& words,
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const TypeSystem& ts,
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const LinkedObjectFile* file) {
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auto guessed_type = get_type_of_label(label, words);
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if (!guessed_type.has_value()) {
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throw std::runtime_error("Could not guess the type of " + label.name);
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}
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return decompile_at_label(*guessed_type, label, labels, words, ts, file);
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}
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goos::Object decompile_function_at_label(const DecompilerLabel& label,
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const LinkedObjectFile* file) {
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if (file) {
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auto other_func = file->try_get_function_at_label(label);
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if (other_func) {
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return final_output_lambda(*other_func);
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}
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}
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return pretty_print::to_symbol(fmt::format("<lambda at {}>", label.name));
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}
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/*!
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* Attempt to decompile data of the given type at the given label. If the decompiler thinks the
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* types do not line up, it will fail.
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*/
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goos::Object decompile_at_label(const TypeSpec& type,
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const DecompilerLabel& label,
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const std::vector<DecompilerLabel>& labels,
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const std::vector<std::vector<LinkedWord>>& words,
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const TypeSystem& ts,
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const LinkedObjectFile* file) {
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if (type == TypeSpec("string")) {
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return decompile_string_at_label(label, words);
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}
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if (ts.tc(TypeSpec("function"), type)) {
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return decompile_function_at_label(label, file);
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}
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if (ts.tc(TypeSpec("array"), type)) {
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std::optional<TypeSpec> content_type_spec;
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if (type.has_single_arg()) {
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content_type_spec = type.get_single_arg();
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}
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return decompile_boxed_array(label, labels, words, ts, file, content_type_spec);
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}
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if (ts.tc(TypeSpec("structure"), type)) {
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return decompile_structure(type, label, labels, words, ts, file, true);
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}
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if (type == TypeSpec("pair")) {
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return decompile_pair(label, labels, words, ts, true, file);
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}
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throw std::runtime_error("Unimplemented decompile_at_label for " + type.print());
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}
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/*!
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* Special case to decompile a string into a string constant.
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*/
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goos::Object decompile_string_at_label(const DecompilerLabel& label,
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const std::vector<std::vector<LinkedWord>>& words) {
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// first, check that it's actually a string.
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if (label.offset % 4) {
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throw std::runtime_error(fmt::format("Cannot get string at label {}, alignment of label is {}",
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label.name, label.offset));
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}
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ASSERT(label.offset >= 4);
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const auto& type_ptr = words.at(label.target_segment).at((label.offset - 4) / 4);
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if (type_ptr.kind() != LinkedWord::TYPE_PTR) {
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throw std::runtime_error(fmt::format(
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"Cannot get string at label {}, word before is not a type pointer.", label.name));
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}
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if (type_ptr.symbol_name() != "string") {
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throw std::runtime_error(fmt::format("Cannot get string at label {}, type pointer is for a {}.",
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label.name, type_ptr.symbol_name()));
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}
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std::string result;
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auto word_idx = (label.offset / 4) - 1;
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// next should be the size
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if (word_idx + 1 >= int(words.at(label.target_segment).size())) {
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throw std::runtime_error(
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fmt::format("Cannot get string at label {}, not enough room", label.name));
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}
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const LinkedWord& size_word = words.at(label.target_segment).at(word_idx + 1);
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if (size_word.kind() != LinkedWord::PLAIN_DATA) {
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// sometimes an array of string pointer triggers this!
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throw std::runtime_error(
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fmt::format("Cannot get string at label {}, size is not plain data.", label.name));
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}
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// now characters...
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for (size_t i = 0; i < size_word.data; i++) {
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int word_offset = word_idx + 2 + (i / 4);
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int byte_offset = i % 4;
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auto& word = words.at(label.target_segment).at(word_offset);
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if (word.kind() != LinkedWord::PLAIN_DATA) {
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throw std::runtime_error(
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fmt::format("Cannot get string at label {}, character is not plain data.", label.name));
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}
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char cword[4];
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memcpy(cword, &word.data, 4);
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result += cword[byte_offset];
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ASSERT(result.back() != 0);
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}
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return goos::StringObject::make_new(result);
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}
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goos::Object decompile_value_array(const TypeSpec& elt_type,
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const Type* elt_type_info,
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int length,
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int stride,
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int offset,
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const std::vector<LinkedWord>& obj_words,
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const TypeSystem& ts) {
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std::vector<goos::Object> array_def = {
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pretty_print::to_symbol(fmt::format("new 'static 'array {} {}", elt_type.print(), length))};
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for (int i = 0; i < length; i++) {
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auto start = offset + stride * i;
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auto end = start + elt_type_info->get_size_in_memory();
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std::vector<u8> elt_bytes;
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for (int j = start; j < end; j++) {
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auto& word = obj_words.at(j / 4);
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if (word.kind() != LinkedWord::PLAIN_DATA) {
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throw std::runtime_error("Got bad word in kind in array of values");
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}
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elt_bytes.push_back(word.get_byte(j % 4));
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}
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ASSERT(elt_type != TypeSpec("uint128"));
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array_def.push_back(decompile_value(elt_type, elt_bytes, ts));
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}
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return pretty_print::build_list(array_def);
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}
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namespace {
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float word_as_float(const LinkedWord& w) {
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ASSERT(w.kind() == LinkedWord::PLAIN_DATA);
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float v;
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memcpy(&v, &w.data, 4);
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return v;
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}
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s32 word_as_s32(const LinkedWord& w) {
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ASSERT(w.kind() == LinkedWord::PLAIN_DATA);
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return w.data;
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}
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std::string print_def(const goos::Object& obj) {
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if (obj.is_pair() && obj.as_pair()->car.is_symbol() &&
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obj.as_pair()->car.as_symbol()->name == "quote") {
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auto& rest = obj.as_pair()->cdr;
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if (rest.is_pair() && rest.as_pair()->cdr.is_empty_list()) {
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return fmt::format("'{}", rest.as_pair()->car.print());
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}
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}
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return obj.print();
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}
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/*!
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* Start at start_byte, and find the location of the next label.
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* Will only check labels that are in the given segment.
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*/
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int index_of_closest_following_label_in_segment(int start_byte,
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int seg,
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const std::vector<DecompilerLabel>& labels) {
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int result_idx = -1;
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int closest_byte = -1;
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for (int i = 0; i < (int)labels.size(); i++) {
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const auto& label = labels.at(i);
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if (label.target_segment == seg) {
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if (result_idx == -1 && label.offset > start_byte) {
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result_idx = i;
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closest_byte = label.offset;
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} else {
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if (label.offset > start_byte && label.offset < closest_byte) {
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result_idx = i;
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closest_byte = label.offset;
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}
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}
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}
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}
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return result_idx;
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}
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/*!
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* Attempt to decompile a reference to an inline array, without knowing the size.
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*/
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goos::Object decomp_ref_to_integer_array_guess_size(
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const std::vector<LinkedWord>& words,
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const std::vector<DecompilerLabel>& labels,
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int my_seg,
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int field_location,
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const TypeSystem& ts,
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const std::vector<std::vector<LinkedWord>>& all_words,
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const LinkedObjectFile* /*file*/,
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const TypeSpec& array_elt_type,
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int stride) {
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// fmt::print("Decomp decomp_ref_to_inline_array_guess_size {}\n", array_elt_type.print());
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// verify types
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auto elt_type_info = ts.lookup_type(array_elt_type);
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ASSERT(stride == elt_type_info->get_size_in_memory());
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ASSERT(!elt_type_info->is_reference());
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// the input is the location of the data field.
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// we expect that to be a label:
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ASSERT((field_location % 4) == 0);
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auto pointer_to_data = words.at(field_location / 4);
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ASSERT(pointer_to_data.kind() == LinkedWord::PTR);
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// the data shouldn't have any labels in the middle of it, so we can find the end of the array
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// by searching for the label after the start label.
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const auto& start_label = labels.at(pointer_to_data.label_id());
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int end_label_idx =
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index_of_closest_following_label_in_segment(start_label.offset, my_seg, labels);
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int end_offset = all_words.at(my_seg).size() * 4;
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if (end_label_idx < 0) {
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lg::warn(
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"Failed to find label: likely just an unimplemented case for when the data is the last "
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"thing in the file.");
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} else {
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const auto& end_label = labels.at(end_label_idx);
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end_offset = end_label.offset;
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}
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// fmt::print("Data is from {} to {}\n", start_label.name, end_label.name);
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// now we can figure out the size
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int size_bytes = end_offset - start_label.offset;
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int size_elts = size_bytes / stride; // 32 bytes per ocean-near-index
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int leftover_bytes = size_bytes % stride;
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// fmt::print("Size is {} bytes ({} elts), with {} bytes left over\n", size_bytes,
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// size_elts,leftover_bytes);
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// if we have leftover, should verify that its all zeros, or that it's the type pointer
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// of the next basic in the data section.
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// ex:
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// .word <data>
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// .type <some-other-basic's type tag>
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// L21: ; label some other basic
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// <other basic's data>
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int padding_start = end_offset - leftover_bytes;
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int padding_end = end_offset;
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for (int pad_byte_idx = padding_start; pad_byte_idx < padding_end; pad_byte_idx++) {
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auto& word = all_words.at(my_seg).at(pad_byte_idx / 4);
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switch (word.kind()) {
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case LinkedWord::PLAIN_DATA:
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ASSERT(word.get_byte(pad_byte_idx) == 0);
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break;
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case LinkedWord::TYPE_PTR:
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break;
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default:
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ASSERT(false);
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}
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}
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return decompile_value_array(array_elt_type, elt_type_info, size_elts, stride, start_label.offset,
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all_words.at(start_label.target_segment), ts);
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}
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/*!
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* Attempt to decompile a reference to an inline array, without knowing the size.
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*/
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goos::Object decomp_ref_to_inline_array_guess_size(
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const std::vector<LinkedWord>& words,
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const std::vector<DecompilerLabel>& labels,
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int my_seg,
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int field_location,
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const TypeSystem& ts,
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const std::vector<std::vector<LinkedWord>>& all_words,
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const LinkedObjectFile* file,
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const TypeSpec& array_elt_type,
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int stride) {
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// fmt::print("Decomp decomp_ref_to_inline_array_guess_size {}\n", array_elt_type.print());
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// verify the stride matches the type system
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auto elt_type_info = ts.lookup_type(array_elt_type);
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int ye = align(elt_type_info->get_size_in_memory(),
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elt_type_info->get_inline_array_stride_alignment());
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ASSERT(stride == ye);
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// the input is the location of the data field.
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// we expect that to be a label:
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ASSERT((field_location % 4) == 0);
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auto pointer_to_data = words.at(field_location / 4);
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ASSERT(pointer_to_data.kind() == LinkedWord::PTR);
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// the data shouldn't have any labels in the middle of it, so we can find the end of the array
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// by searching for the label after the start label.
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const auto& start_label = labels.at(pointer_to_data.label_id());
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int end_label_idx =
|
|
index_of_closest_following_label_in_segment(start_label.offset, my_seg, labels);
|
|
|
|
int end_offset = all_words.at(my_seg).size() * 4;
|
|
if (end_label_idx < 0) {
|
|
lg::warn(
|
|
"Failed to find label: likely just an unimplemented case for when the data is the last "
|
|
"thing in the file.");
|
|
} else {
|
|
const auto& end_label = labels.at(end_label_idx);
|
|
end_offset = end_label.offset;
|
|
}
|
|
|
|
// fmt::print("Data is from {} to {}\n", start_label.name, end_label.name);
|
|
|
|
// now we can figure out the size
|
|
int size_bytes = end_offset - start_label.offset;
|
|
int size_elts = size_bytes / stride; // 32 bytes per ocean-near-index
|
|
int leftover_bytes = size_bytes % stride;
|
|
// fmt::print("Size is {} bytes ({} elts), with {} bytes left over\n", size_bytes,
|
|
// size_elts,leftover_bytes);
|
|
|
|
// if we have leftover, should verify that its all zeros, or that it's the type pointer
|
|
// of the next basic in the data section.
|
|
// ex:
|
|
// .word <data>
|
|
// .type <some-other-basic's type tag>
|
|
// L21: ; label some other basic
|
|
// <other basic's data>
|
|
int padding_start = end_offset - leftover_bytes;
|
|
int padding_end = end_offset;
|
|
for (int pad_byte_idx = padding_start; pad_byte_idx < padding_end; pad_byte_idx++) {
|
|
auto& word = all_words.at(my_seg).at(pad_byte_idx / 4);
|
|
switch (word.kind()) {
|
|
case LinkedWord::PLAIN_DATA:
|
|
ASSERT(word.get_byte(pad_byte_idx) == 0);
|
|
break;
|
|
case LinkedWord::TYPE_PTR:
|
|
break;
|
|
default:
|
|
ASSERT(false);
|
|
}
|
|
}
|
|
|
|
// now disassemble:
|
|
std::vector<goos::Object> array_def = {pretty_print::to_symbol(
|
|
fmt::format("new 'static 'inline-array {} {}", array_elt_type.print(), size_elts))};
|
|
|
|
for (int elt = 0; elt < size_elts; elt++) {
|
|
// for each element, create a fake temporary label at the start to identify it
|
|
DecompilerLabel fake_label;
|
|
fake_label.target_segment = my_seg; // same segment
|
|
fake_label.offset = start_label.offset + elt * stride;
|
|
array_def.push_back(
|
|
decompile_at_label(array_elt_type, fake_label, labels, all_words, ts, file));
|
|
}
|
|
|
|
// build into a list.
|
|
return pretty_print::build_list(array_def);
|
|
}
|
|
|
|
/*!
|
|
* Decompile the data field of ocean-near-indices, which is an (inline-array ocean-near-index).
|
|
* This is like a C++ ocean_near_index*, meaning we don't know how long the array is.
|
|
* We know all the data in a ocean_near_index is just integers, so we can guess that the end
|
|
* of the array is just the location of the next label.
|
|
* There's a chance that this will include some padding in the array and make it too long,
|
|
* but there is no harm in that.
|
|
*/
|
|
goos::Object ocean_near_indices_decompile(const std::vector<LinkedWord>& words,
|
|
const std::vector<DecompilerLabel>& labels,
|
|
int my_seg,
|
|
int field_location,
|
|
const TypeSystem& ts,
|
|
const std::vector<std::vector<LinkedWord>>& all_words,
|
|
const LinkedObjectFile* file) {
|
|
return decomp_ref_to_inline_array_guess_size(words, labels, my_seg, field_location, ts, all_words,
|
|
file, TypeSpec("ocean-near-index"), 32);
|
|
}
|
|
|
|
goos::Object ocean_mid_masks_decompile(const std::vector<LinkedWord>& words,
|
|
const std::vector<DecompilerLabel>& labels,
|
|
int my_seg,
|
|
int field_location,
|
|
const TypeSystem& ts,
|
|
const std::vector<std::vector<LinkedWord>>& all_words,
|
|
const LinkedObjectFile* file) {
|
|
return decomp_ref_to_inline_array_guess_size(words, labels, my_seg, field_location, ts, all_words,
|
|
file, TypeSpec("ocean-mid-mask"), 8);
|
|
}
|
|
|
|
goos::Object sp_field_init_spec_decompile(const std::vector<LinkedWord>& words,
|
|
const std::vector<DecompilerLabel>& labels,
|
|
int my_seg,
|
|
int field_location,
|
|
const TypeSystem& ts,
|
|
const std::vector<std::vector<LinkedWord>>& all_words,
|
|
const LinkedObjectFile* file) {
|
|
return decomp_ref_to_inline_array_guess_size(words, labels, my_seg, field_location, ts, all_words,
|
|
file, TypeSpec("sp-field-init-spec"), 16);
|
|
}
|
|
|
|
goos::Object nav_mesh_vertex_arr_decompile(const std::vector<LinkedWord>& words,
|
|
const std::vector<DecompilerLabel>& labels,
|
|
int my_seg,
|
|
int field_location,
|
|
const TypeSystem& ts,
|
|
const std::vector<std::vector<LinkedWord>>& all_words,
|
|
const LinkedObjectFile* file) {
|
|
return decomp_ref_to_inline_array_guess_size(words, labels, my_seg, field_location, ts, all_words,
|
|
file, TypeSpec("nav-vertex"), 16);
|
|
}
|
|
|
|
goos::Object nav_mesh_poly_arr_decompile(const std::vector<LinkedWord>& words,
|
|
const std::vector<DecompilerLabel>& labels,
|
|
int my_seg,
|
|
int field_location,
|
|
const TypeSystem& ts,
|
|
const std::vector<std::vector<LinkedWord>>& all_words,
|
|
const LinkedObjectFile* file) {
|
|
return decomp_ref_to_inline_array_guess_size(words, labels, my_seg, field_location, ts, all_words,
|
|
file, TypeSpec("nav-poly"), 8);
|
|
}
|
|
|
|
goos::Object nav_mesh_route_arr_decompile(const std::vector<LinkedWord>& words,
|
|
const std::vector<DecompilerLabel>& labels,
|
|
int my_seg,
|
|
int field_location,
|
|
const TypeSystem& ts,
|
|
const std::vector<std::vector<LinkedWord>>& all_words,
|
|
const LinkedObjectFile* file) {
|
|
return decomp_ref_to_inline_array_guess_size(words, labels, my_seg, field_location, ts, all_words,
|
|
file, TypeSpec("vector4ub"), 4);
|
|
}
|
|
|
|
goos::Object sp_launch_grp_launcher_decompile(const std::vector<LinkedWord>& words,
|
|
const std::vector<DecompilerLabel>& labels,
|
|
int my_seg,
|
|
int field_location,
|
|
const TypeSystem& ts,
|
|
const std::vector<std::vector<LinkedWord>>& all_words,
|
|
const LinkedObjectFile* file) {
|
|
return decomp_ref_to_inline_array_guess_size(words, labels, my_seg, field_location, ts, all_words,
|
|
file, TypeSpec("sparticle-group-item"), 32);
|
|
}
|
|
|
|
goos::Object decompile_sound_spec(const TypeSpec& type,
|
|
const DecompilerLabel& label,
|
|
const std::vector<DecompilerLabel>& labels,
|
|
const std::vector<std::vector<LinkedWord>>& words,
|
|
const TypeSystem& ts,
|
|
const LinkedObjectFile* file) {
|
|
// auto normal = decompile_structure(type, label, labels, words, ts, file, false);
|
|
// fmt::print("Doing: {}\n", normal.print());
|
|
auto uncast_type_info = ts.lookup_type(type);
|
|
auto type_info = dynamic_cast<StructureType*>(uncast_type_info);
|
|
if (!type_info) {
|
|
throw std::runtime_error(fmt::format("Type {} wasn't a structure type.", type.print()));
|
|
}
|
|
ASSERT(type_info->get_size_in_memory() == 0x4c);
|
|
|
|
// get words for real
|
|
auto offset_location = label.offset - type_info->get_offset();
|
|
int word_count = (type_info->get_size_in_memory() + 3) / 4;
|
|
std::vector<LinkedWord> obj_words;
|
|
obj_words.insert(obj_words.begin(),
|
|
words.at(label.target_segment).begin() + (offset_location / 4) + 1,
|
|
words.at(label.target_segment).begin() + (offset_location / 4) + word_count);
|
|
|
|
for (int i = 0; i < word_count - 1; ++i) {
|
|
if (i == word_count - 2 && !obj_words.at(i).data) {
|
|
// just some default initialized sound spec, don't attempt anything fancy.
|
|
return decompile_structure(type, label, labels, words, ts, file, false);
|
|
}
|
|
if (obj_words.at(i).data)
|
|
break;
|
|
}
|
|
|
|
u16 implicit_mask = 0;
|
|
u16 mask = obj_words.at(0).data;
|
|
float num = word_as_float(obj_words.at(1));
|
|
u8 group = obj_words.at(2).data;
|
|
char sound_name[17];
|
|
sound_name[16] = 0;
|
|
memcpy(&sound_name[0], &obj_words.at(3).data, sizeof(u32));
|
|
memcpy(&sound_name[4], &obj_words.at(4).data, sizeof(u32));
|
|
memcpy(&sound_name[8], &obj_words.at(5).data, sizeof(u32));
|
|
memcpy(&sound_name[12], &obj_words.at(6).data, sizeof(u32));
|
|
std::string name(sound_name);
|
|
|
|
for (int i = 0; i < 4; ++i) {
|
|
if (obj_words.at(7 + i).data) {
|
|
throw std::runtime_error("static sound-spec trans was not zero.");
|
|
}
|
|
}
|
|
|
|
s32 volume = word_as_s32(obj_words.at(11));
|
|
s32 pitch = word_as_s32(obj_words.at(12));
|
|
s32 bend = word_as_s32(obj_words.at(13));
|
|
s16 fo_min = word_as_s32(obj_words.at(14));
|
|
s16 fo_max = word_as_s32(obj_words.at(14)) >> 16;
|
|
s8 fo_curve = word_as_s32(obj_words.at(15));
|
|
s8 priority = word_as_s32(obj_words.at(15)) >> 8;
|
|
s32 auto_time = word_as_s32(obj_words.at(16));
|
|
s32 auto_from = word_as_s32(obj_words.at(17));
|
|
|
|
if (bend) {
|
|
throw std::runtime_error("static sound-spec bend was not zero.");
|
|
}
|
|
if (fo_curve) {
|
|
throw std::runtime_error("static sound-spec fo_curve was not zero.");
|
|
}
|
|
if (priority) {
|
|
throw std::runtime_error("static sound-spec priority was not zero.");
|
|
}
|
|
if (auto_time) {
|
|
throw std::runtime_error("static sound-spec auto_time was not zero.");
|
|
}
|
|
if (auto_from) {
|
|
throw std::runtime_error("static sound-spec auto_from was not zero.");
|
|
}
|
|
|
|
std::vector<goos::Object> the_macro;
|
|
|
|
the_macro.push_back(pretty_print::to_symbol("static-sound-spec"));
|
|
the_macro.push_back(goos::StringObject::make_new(name));
|
|
if (num != 1) {
|
|
the_macro.push_back(pretty_print::to_symbol(fmt::format(":num {}", num)));
|
|
}
|
|
if (group != 1) {
|
|
the_macro.push_back(pretty_print::to_symbol(fmt::format(":group {}", num)));
|
|
}
|
|
if ((mask & 1) || volume != 1024) {
|
|
implicit_mask |= 1 << 0;
|
|
float volf = volume / 10.24f;
|
|
// volume is fixed point, and floats should round towards zero, so we convert specific ints
|
|
// to better-looking floats that end up being the same value.
|
|
// there should be a more automated way to do this, but i am a bit lazy.
|
|
switch (volume) {
|
|
case 0x2cc:
|
|
volf = 70;
|
|
break;
|
|
case 0x333:
|
|
volf = 80;
|
|
break;
|
|
}
|
|
the_macro.push_back(pretty_print::to_symbol(fmt::format(":volume {}", float_to_string(volf))));
|
|
}
|
|
if (pitch != 0) {
|
|
implicit_mask |= 1 << 1;
|
|
the_macro.push_back(pretty_print::to_symbol(fmt::format(":pitch-mod {}", pitch)));
|
|
}
|
|
if (fo_min != 0) {
|
|
implicit_mask |= 1 << 6;
|
|
the_macro.push_back(pretty_print::to_symbol(fmt::format(":fo-min {}", fo_min)));
|
|
}
|
|
if (fo_max != 0) {
|
|
implicit_mask |= 1 << 7;
|
|
the_macro.push_back(pretty_print::to_symbol(fmt::format(":fo-max {}", fo_max)));
|
|
}
|
|
|
|
if (mask < implicit_mask) {
|
|
throw std::runtime_error(
|
|
fmt::format("static sound-spec too many implicit masks: #x{:x}", implicit_mask ^ mask));
|
|
}
|
|
u16 final_mask = mask ^ implicit_mask;
|
|
if (final_mask) {
|
|
lg::error(
|
|
"final_mask in static sound-spec decomp: #x{:x}. This is fine, but should be reported.",
|
|
final_mask);
|
|
std::string mask_list = ":mask (";
|
|
bool first = true;
|
|
for (const auto& m : decompile_bitfield_enum_from_int(TypeSpec("sound-mask"), ts, final_mask)) {
|
|
if (!first) {
|
|
mask_list += " ";
|
|
}
|
|
mask_list += m;
|
|
first = false;
|
|
}
|
|
mask_list += ")";
|
|
|
|
the_macro.push_back(pretty_print::to_symbol(mask_list));
|
|
}
|
|
|
|
return pretty_print::build_list(the_macro);
|
|
}
|
|
|
|
} // namespace
|
|
|
|
goos::Object decompile_structure(const TypeSpec& type,
|
|
const DecompilerLabel& label,
|
|
const std::vector<DecompilerLabel>& labels,
|
|
const std::vector<std::vector<LinkedWord>>& words,
|
|
const TypeSystem& ts,
|
|
const LinkedObjectFile* file,
|
|
bool use_fancy_macros) {
|
|
// some structures we want to decompile to fancy macros instead of a raw static definiton
|
|
if (use_fancy_macros) {
|
|
if (type == TypeSpec("sp-field-init-spec")) {
|
|
return decompile_sparticle_field_init(type, label, labels, words, ts, file);
|
|
}
|
|
if (type == TypeSpec("sparticle-group-item")) {
|
|
return decompile_sparticle_group_item(type, label, labels, words, ts, file);
|
|
}
|
|
if (type == TypeSpec("sound-spec")) {
|
|
return decompile_sound_spec(type, label, labels, words, ts, file);
|
|
}
|
|
}
|
|
|
|
// first step, get type info and words
|
|
TypeSpec actual_type = type;
|
|
auto uncast_type_info = ts.lookup_type(actual_type);
|
|
auto type_info = dynamic_cast<StructureType*>(uncast_type_info);
|
|
if (!type_info) {
|
|
throw std::runtime_error(fmt::format("Type {} wasn't a structure type.", actual_type.print()));
|
|
}
|
|
bool is_basic = dynamic_cast<BasicType*>(uncast_type_info);
|
|
auto offset_location = label.offset - type_info->get_offset();
|
|
|
|
if (is_basic) {
|
|
const auto& word = words.at(label.target_segment).at((offset_location / 4));
|
|
if (word.kind() != LinkedWord::TYPE_PTR) {
|
|
throw std::runtime_error("Basic does not start with type pointer");
|
|
}
|
|
|
|
if (word.symbol_name() != actual_type.base_type()) {
|
|
// we can specify a more specific type.
|
|
auto got_type = TypeSpec(word.symbol_name());
|
|
if (ts.tc(actual_type, got_type)) {
|
|
actual_type = got_type;
|
|
|
|
type_info = dynamic_cast<StructureType*>(ts.lookup_type(actual_type));
|
|
if (!type_info) {
|
|
throw std::runtime_error(
|
|
fmt::format("Type-tag type {} wasn't a structure type.", actual_type.print()));
|
|
}
|
|
|
|
// try again with the right type. this resets back to decompile_at_label because we may
|
|
// want to get the specific function/string/etc implementations.
|
|
return decompile_at_label(actual_type, label, labels, words, ts, file);
|
|
} else {
|
|
throw std::runtime_error(
|
|
fmt::format("Basic has the wrong type pointer, got {} expected {} at label {}:{}",
|
|
word.symbol_name(), actual_type.base_type(), label.name, label.offset));
|
|
}
|
|
}
|
|
}
|
|
|
|
int word_count = (type_info->get_size_in_memory() + 3) / 4;
|
|
|
|
// check alignment
|
|
if (offset_location % 8) {
|
|
std::string error = fmt::format(
|
|
"Decompiling a structure with type type {} (type offset {}) at label {}, but it has "
|
|
"alignment {}, which is not valid. This might be okay for a packed inline array, but "
|
|
"shouldn't happen for basics. {}",
|
|
type_info->get_name(), type_info->get_offset(), label.name, (offset_location % 8),
|
|
(offset_location & 0b10) ? "Maybe it is actually a pair?" : "");
|
|
|
|
if (is_basic || !type_info->is_packed()) {
|
|
throw std::runtime_error(error);
|
|
} else {
|
|
// fmt::print("{}\n", error);
|
|
}
|
|
}
|
|
|
|
// check enough room
|
|
if (int(words.at(label.target_segment).size()) < word_count + offset_location / 4) {
|
|
throw std::runtime_error(fmt::format(
|
|
"Structure type {} takes up {} bytes and doesn't fit. {}:{}", type_info->get_name(),
|
|
type_info->get_size_in_memory(), label.name, offset_location));
|
|
}
|
|
|
|
// get words for real
|
|
std::vector<LinkedWord> obj_words;
|
|
obj_words.insert(obj_words.begin(),
|
|
words.at(label.target_segment).begin() + (offset_location / 4),
|
|
words.at(label.target_segment).begin() + (offset_location / 4) + word_count);
|
|
|
|
// status of each byte.
|
|
enum ByteStatus : u8 { ZERO_UNREAD, HAS_DATA_UNREAD, ZERO_READ, HAS_DATA_READ };
|
|
std::vector<int> field_status_per_byte;
|
|
for (int i = 0; i < word_count; i++) {
|
|
auto& w = obj_words.at(i);
|
|
switch (w.kind()) {
|
|
case LinkedWord::TYPE_PTR:
|
|
case LinkedWord::PTR:
|
|
case LinkedWord::SYM_PTR:
|
|
case LinkedWord::EMPTY_PTR:
|
|
field_status_per_byte.push_back(HAS_DATA_UNREAD);
|
|
field_status_per_byte.push_back(HAS_DATA_UNREAD);
|
|
field_status_per_byte.push_back(HAS_DATA_UNREAD);
|
|
field_status_per_byte.push_back(HAS_DATA_UNREAD);
|
|
break;
|
|
case LinkedWord::PLAIN_DATA: {
|
|
u8 bytes[4];
|
|
memcpy(bytes, &w.data, 4);
|
|
for (auto b : bytes) {
|
|
field_status_per_byte.push_back(b ? HAS_DATA_UNREAD : ZERO_UNREAD);
|
|
}
|
|
} break;
|
|
default:
|
|
throw std::runtime_error("Unsupported word in static data");
|
|
}
|
|
}
|
|
|
|
std::vector<std::pair<std::string, goos::Object>> field_defs_out;
|
|
// now iterate over fields:
|
|
int idx = 0;
|
|
for (auto& field : type_info->fields()) {
|
|
if (field.skip_in_decomp()) {
|
|
idx++;
|
|
continue;
|
|
}
|
|
if (is_basic && idx == 0) {
|
|
ASSERT(field.name() == "type" && field.offset() == 0);
|
|
auto& word = obj_words.at(0);
|
|
if (word.kind() != LinkedWord::TYPE_PTR) {
|
|
throw std::runtime_error("Basic does not start with type pointer");
|
|
}
|
|
|
|
if (word.symbol_name() != actual_type.base_type()) {
|
|
// the check above should have caught this.
|
|
ASSERT(false);
|
|
}
|
|
for (int k = 0; k < 4; k++) {
|
|
field_status_per_byte.at(k) = HAS_DATA_READ;
|
|
}
|
|
idx++;
|
|
continue;
|
|
}
|
|
idx++;
|
|
|
|
// O(N^2)-1 approach to the score system? but I didn't notice any slowdowns and there are
|
|
// ultimately not many static allocs
|
|
bool higher_score_available = false;
|
|
for (auto& other_field : type_info->fields()) {
|
|
if (other_field == field)
|
|
continue;
|
|
if (other_field.offset() == field.offset() &&
|
|
other_field.field_score() > field.field_score()) {
|
|
higher_score_available = true;
|
|
break;
|
|
}
|
|
}
|
|
if (higher_score_available) {
|
|
// a higher priority field is available
|
|
continue;
|
|
}
|
|
|
|
// first, let's see if this overlaps with anything:
|
|
auto field_start = field.offset();
|
|
auto field_end = field_start + ts.get_size_in_type(field);
|
|
bool all_zero = true;
|
|
bool any_overlap = false;
|
|
for (int i = field_start; i < field_end; i++) {
|
|
auto status = field_status_per_byte.at(i);
|
|
if (status != ZERO_UNREAD && status != ZERO_READ) {
|
|
all_zero = false;
|
|
}
|
|
if (status == HAS_DATA_READ || status == ZERO_READ) {
|
|
any_overlap = true;
|
|
}
|
|
}
|
|
|
|
if (all_zero) {
|
|
// field has nothing in it, just skip it.
|
|
continue;
|
|
}
|
|
|
|
if (any_overlap) {
|
|
// for now, let's just skip fields that overlapped with the previous.
|
|
// eventually we should do something smarter here...
|
|
continue;
|
|
}
|
|
|
|
// first, let's see if it's a value or reference
|
|
auto field_type_info = ts.lookup_type(field.type());
|
|
if (!field_type_info->is_reference()) {
|
|
// value type. need to get bytes.
|
|
ASSERT(!field.is_inline());
|
|
if (field.is_array()) {
|
|
// array of values.
|
|
auto len = field.array_size();
|
|
auto stride = ts.get_size_in_type(field) / len;
|
|
ASSERT(stride == field_type_info->get_size_in_memory());
|
|
|
|
field_defs_out.emplace_back(
|
|
field.name(), decompile_value_array(field.type(), field_type_info, len, stride,
|
|
field_start, obj_words, ts));
|
|
} else if (field.is_dynamic()) {
|
|
throw std::runtime_error(
|
|
fmt::format("Dynamic value field {} in static data type {} not yet implemented",
|
|
field.name(), actual_type.print()));
|
|
} else {
|
|
if (field.name() == "data" && type.print() == "ocean-near-indices") {
|
|
// first, get the label:
|
|
field_defs_out.emplace_back(
|
|
field.name(), ocean_near_indices_decompile(obj_words, labels, label.target_segment,
|
|
field_start, ts, words, file));
|
|
} else if (field.name() == "data" && type.print() == "ocean-mid-masks") {
|
|
field_defs_out.emplace_back(
|
|
field.name(), ocean_mid_masks_decompile(obj_words, labels, label.target_segment,
|
|
field_start, ts, words, file));
|
|
} else if (field.name() == "init-specs" && type.print() == "sparticle-launcher") {
|
|
field_defs_out.emplace_back(
|
|
field.name(), sp_field_init_spec_decompile(obj_words, labels, label.target_segment,
|
|
field_start, ts, words, file));
|
|
} else if (field.name() == "vertex" && type.print() == "nav-mesh") {
|
|
field_defs_out.emplace_back(
|
|
field.name(), nav_mesh_vertex_arr_decompile(obj_words, labels, label.target_segment,
|
|
field_start, ts, words, file));
|
|
} else if (field.name() == "poly" && type.print() == "nav-mesh") {
|
|
field_defs_out.emplace_back(
|
|
field.name(), nav_mesh_poly_arr_decompile(obj_words, labels, label.target_segment,
|
|
field_start, ts, words, file));
|
|
} else if (field.name() == "route" && type.print() == "nav-mesh") {
|
|
field_defs_out.emplace_back(
|
|
field.name(), nav_mesh_route_arr_decompile(obj_words, labels, label.target_segment,
|
|
field_start, ts, words, file));
|
|
} else if (field.name() == "launcher" && type.print() == "sparticle-launch-group") {
|
|
field_defs_out.emplace_back(field.name(), sp_launch_grp_launcher_decompile(
|
|
obj_words, labels, label.target_segment,
|
|
field_start, ts, words, file));
|
|
} else if (field.name() == "col-mesh-indexes" && type.print() == "ropebridge-tuning") {
|
|
field_defs_out.emplace_back(
|
|
field.name(), decomp_ref_to_integer_array_guess_size(
|
|
obj_words, labels, label.target_segment, field_start, ts, words,
|
|
file, TypeSpec("uint8"), 1));
|
|
} else {
|
|
if (field.type().base_type() == "pointer") {
|
|
if (obj_words.at(field_start / 4).kind() != LinkedWord::SYM_PTR) {
|
|
continue;
|
|
}
|
|
|
|
if (obj_words.at(field_start / 4).symbol_name() != "#f") {
|
|
lg::warn("Got a weird symbol in a pointer field: {}",
|
|
obj_words.at(field_start / 4).symbol_name());
|
|
continue;
|
|
}
|
|
|
|
field_defs_out.emplace_back(field.name(), pretty_print::to_symbol("#f"));
|
|
|
|
} else {
|
|
if (obj_words.at(field_start / 4).kind() != LinkedWord::PLAIN_DATA) {
|
|
continue;
|
|
}
|
|
std::vector<u8> bytes_out;
|
|
for (int byte_idx = field_start; byte_idx < field_end; byte_idx++) {
|
|
bytes_out.push_back(obj_words.at(byte_idx / 4).get_byte(byte_idx % 4));
|
|
}
|
|
field_defs_out.emplace_back(field.name(), decompile_value(field.type(), bytes_out, ts));
|
|
}
|
|
}
|
|
}
|
|
|
|
} else {
|
|
if (!field.is_dynamic() && !field.is_array() && field.is_inline()) {
|
|
// inline structure!
|
|
DecompilerLabel fake_label;
|
|
fake_label.target_segment = label.target_segment;
|
|
// offset from real start of outer + field offset + tag, we want to fake that.
|
|
fake_label.offset = offset_location + field.offset() + field_type_info->get_offset();
|
|
fake_label.name = fmt::format("fake-label-{}-{}", actual_type.print(), field.name());
|
|
field_defs_out.emplace_back(
|
|
field.name(), decompile_at_label(field.type(), fake_label, labels, words, ts, file));
|
|
} else if (!field.is_dynamic() && field.is_array() && field.is_inline()) {
|
|
// it's an inline array. let's figure out the len and stride
|
|
auto len = field.array_size();
|
|
auto total_size = ts.get_size_in_type(field);
|
|
auto stride = total_size / len;
|
|
ASSERT(stride * len == total_size);
|
|
ASSERT(stride == align(field_type_info->get_size_in_memory(),
|
|
field_type_info->get_inline_array_stride_alignment()));
|
|
|
|
std::vector<goos::Object> array_def = {pretty_print::to_symbol(fmt::format(
|
|
"new 'static 'inline-array {} {}", field.type().print(), field.array_size()))};
|
|
for (int elt = 0; elt < len; elt++) {
|
|
DecompilerLabel fake_label;
|
|
fake_label.target_segment = label.target_segment;
|
|
// offset from real start of outer + field offset + tag, we want to fake that.
|
|
fake_label.offset =
|
|
offset_location + field.offset() + field_type_info->get_offset() + stride * elt;
|
|
fake_label.name =
|
|
fmt::format("fake-label-{}-{}-elt-{}", actual_type.print(), field.name(), elt);
|
|
array_def.push_back(
|
|
decompile_at_label(field.type(), fake_label, labels, words, ts, file));
|
|
}
|
|
field_defs_out.emplace_back(field.name(), pretty_print::build_list(array_def));
|
|
} else if (!field.is_dynamic() && field.is_array() && !field.is_inline()) {
|
|
auto len = field.array_size();
|
|
auto total_size = ts.get_size_in_type(field);
|
|
auto stride = total_size / len;
|
|
ASSERT(stride * len == total_size);
|
|
ASSERT(stride == 4);
|
|
|
|
std::vector<goos::Object> array_def = {pretty_print::to_symbol(
|
|
fmt::format("new 'static 'array {} {}", field.type().print(), field.array_size()))};
|
|
|
|
int end_elt = 0;
|
|
for (int elt = len; elt-- > 0;) {
|
|
auto& word = obj_words.at((field_start / 4) + elt);
|
|
if (word.kind() == LinkedWord::PLAIN_DATA && word.data == 0) {
|
|
continue;
|
|
}
|
|
end_elt = elt + 1;
|
|
break;
|
|
}
|
|
|
|
for (int elt = 0; elt < end_elt; elt++) {
|
|
auto& word = obj_words.at((field_start / 4) + elt);
|
|
|
|
if (word.kind() == LinkedWord::PTR) {
|
|
array_def.push_back(decompile_at_label(field.type(), labels.at(word.label_id()), labels,
|
|
words, ts, file));
|
|
} else if (word.kind() == LinkedWord::PLAIN_DATA && word.data == 0) {
|
|
// do nothing, the default is zero?
|
|
array_def.push_back(pretty_print::to_symbol("0"));
|
|
} else if (word.kind() == LinkedWord::SYM_PTR) {
|
|
if (word.symbol_name() == "#f" || word.symbol_name() == "#t") {
|
|
array_def.push_back(pretty_print::to_symbol(fmt::format("{}", word.symbol_name())));
|
|
} else {
|
|
array_def.push_back(pretty_print::to_symbol(fmt::format("'{}", word.symbol_name())));
|
|
}
|
|
} else if (word.kind() == LinkedWord::EMPTY_PTR) {
|
|
array_def.push_back(pretty_print::to_symbol("'()"));
|
|
} else {
|
|
throw std::runtime_error(fmt::format(
|
|
"Field {} in type {} offset {} did not have a proper reference for "
|
|
"array element {} k = {}",
|
|
field.name(), actual_type.print(), field.offset(), elt, (int)word.kind()));
|
|
}
|
|
}
|
|
field_defs_out.emplace_back(field.name(), pretty_print::build_list(array_def));
|
|
|
|
} else if (field.is_dynamic() || field.is_array() || field.is_inline()) {
|
|
throw std::runtime_error(fmt::format(
|
|
"Dynamic/array/inline reference field {} type {} in static data not yet implemented",
|
|
field.name(), actual_type.print()));
|
|
} else {
|
|
// then we expect a label.
|
|
ASSERT(field_end - field_start == 4);
|
|
auto& word = obj_words.at(field_start / 4);
|
|
|
|
if (word.kind() == LinkedWord::PTR) {
|
|
if (field.type() == TypeSpec("symbol")) {
|
|
continue;
|
|
}
|
|
field_defs_out.emplace_back(
|
|
field.name(), decompile_at_label(field.type(), labels.at(word.label_id()), labels,
|
|
words, ts, file));
|
|
} else if (word.kind() == LinkedWord::PLAIN_DATA && word.data == 0) {
|
|
// do nothing, the default is zero?
|
|
field_defs_out.emplace_back(field.name(), pretty_print::to_symbol("0"));
|
|
} else if (word.kind() == LinkedWord::SYM_PTR) {
|
|
if (word.symbol_name() == "#f" || word.symbol_name() == "#t") {
|
|
field_defs_out.emplace_back(
|
|
field.name(), pretty_print::to_symbol(fmt::format("{}", word.symbol_name())));
|
|
} else {
|
|
field_defs_out.emplace_back(
|
|
field.name(), pretty_print::to_symbol(fmt::format("'{}", word.symbol_name())));
|
|
}
|
|
} else if (word.kind() == LinkedWord::EMPTY_PTR) {
|
|
field_defs_out.emplace_back(field.name(), pretty_print::to_symbol("'()"));
|
|
} else if (word.kind() == LinkedWord::TYPE_PTR) {
|
|
if (field.type() != TypeSpec("type")) {
|
|
throw std::runtime_error(
|
|
fmt::format("Field {} in type {} offset {} had a reference to type {}, but the "
|
|
"type of the field is not type.",
|
|
field.name(), actual_type.print(), field.offset(), word.symbol_name()));
|
|
}
|
|
int method_count = ts.get_type_method_count(word.symbol_name());
|
|
field_defs_out.emplace_back(
|
|
field.name(), pretty_print::to_symbol(fmt::format("(type-ref {} :method-count {})",
|
|
word.symbol_name(), method_count)));
|
|
} else {
|
|
throw std::runtime_error(
|
|
fmt::format("Field {} in type {} offset {} did not have a proper reference",
|
|
field.name(), actual_type.print(), field.offset()));
|
|
}
|
|
}
|
|
}
|
|
|
|
// OK - READ THE FIELD:
|
|
for (int i = field_start; i < field_end; i++) {
|
|
// even if our field was partially zero, we mark those zero bytes as "has data".
|
|
field_status_per_byte.at(i) = HAS_DATA_READ;
|
|
}
|
|
}
|
|
|
|
for (size_t i = 0; i < field_status_per_byte.size(); i++) {
|
|
if (field_status_per_byte.at(i) == HAS_DATA_UNREAD) {
|
|
throw std::runtime_error(
|
|
fmt::format("In structure of type {} at label {} offset {}, there was unknown data.",
|
|
actual_type.print(), label.name, i));
|
|
}
|
|
}
|
|
|
|
std::vector<goos::Object> result_def = {
|
|
pretty_print::to_symbol(fmt::format("new 'static '{}", actual_type.print()))};
|
|
for (auto& f : field_defs_out) {
|
|
auto str = f.second.print();
|
|
if (str.length() < 40) {
|
|
result_def.push_back(
|
|
pretty_print::to_symbol(fmt::format(":{} {}", f.first, print_def(f.second))));
|
|
} else {
|
|
result_def.push_back(pretty_print::to_symbol(fmt::format(":{}", f.first)));
|
|
result_def.push_back(f.second);
|
|
}
|
|
}
|
|
return pretty_print::build_list(result_def);
|
|
}
|
|
|
|
goos::Object bitfield_defs_print(const TypeSpec& type,
|
|
const std::vector<BitFieldConstantDef>& defs) {
|
|
std::vector<goos::Object> result;
|
|
result.push_back(pretty_print::to_symbol(fmt::format("new 'static '{}", type.print())));
|
|
for (auto& def : defs) {
|
|
if (def.enum_constant) {
|
|
result.push_back(
|
|
pretty_print::to_symbol(fmt::format(":{} {}", def.field_name, *def.enum_constant)));
|
|
} else if (def.is_signed) {
|
|
result.push_back(
|
|
pretty_print::to_symbol(fmt::format(":{} {}", def.field_name, (s64)def.value)));
|
|
} else if (def.nested_field) {
|
|
result.push_back(pretty_print::to_symbol(fmt::format(
|
|
":{} {}", def.field_name,
|
|
bitfield_defs_print(def.nested_field->field_type, def.nested_field->fields).print())));
|
|
} else {
|
|
result.push_back(
|
|
pretty_print::to_symbol(fmt::format(":{} #x{:x}", def.field_name, def.value)));
|
|
}
|
|
}
|
|
return pretty_print::build_list(result);
|
|
}
|
|
|
|
goos::Object decompile_value(const TypeSpec& type,
|
|
const std::vector<u8>& bytes,
|
|
const TypeSystem& ts) {
|
|
auto as_enum = ts.try_enum_lookup(type);
|
|
if (as_enum) {
|
|
ASSERT((int)bytes.size() == as_enum->get_load_size());
|
|
ASSERT(bytes.size() <= 8);
|
|
u64 value = 0;
|
|
memcpy(&value, bytes.data(), bytes.size());
|
|
if (as_enum->is_bitfield()) {
|
|
auto defs = decompile_bitfield_enum_from_int(type, ts, value);
|
|
std::vector<goos::Object> result_def = {pretty_print::to_symbol(type.print())};
|
|
for (auto& x : defs) {
|
|
result_def.push_back(pretty_print::to_symbol(x));
|
|
}
|
|
return pretty_print::build_list(result_def);
|
|
} else {
|
|
auto def = decompile_int_enum_from_int(type, ts, value);
|
|
return pretty_print::build_list(type.print(), def);
|
|
}
|
|
}
|
|
|
|
auto as_bitfield = dynamic_cast<BitFieldType*>(ts.lookup_type(type));
|
|
if (as_bitfield) {
|
|
if (as_bitfield->get_name() == "sound-name") {
|
|
ASSERT(bytes.size() == 16);
|
|
char name[17];
|
|
memcpy(name, bytes.data(), 16);
|
|
name[16] = '\0';
|
|
|
|
bool got_zero = false;
|
|
for (int i = 0; i < 16; i++) {
|
|
if (name[i] == 0) {
|
|
got_zero = true;
|
|
} else {
|
|
if (got_zero) {
|
|
ASSERT(false);
|
|
}
|
|
}
|
|
}
|
|
return pretty_print::to_symbol(fmt::format("(static-sound-name \"{}\")", name));
|
|
} else if (as_bitfield->get_name() != "time-frame") { // time-frame has a special case below
|
|
ASSERT((int)bytes.size() == as_bitfield->get_load_size());
|
|
ASSERT(bytes.size() <= 8);
|
|
u64 value = 0;
|
|
memcpy(&value, bytes.data(), bytes.size());
|
|
auto defs = decompile_bitfield_from_int(type, ts, value);
|
|
return bitfield_defs_print(type, defs);
|
|
}
|
|
}
|
|
|
|
// try as common integer types:
|
|
if (ts.tc(TypeSpec("uint32"), type)) {
|
|
ASSERT(bytes.size() == 4);
|
|
u32 value;
|
|
memcpy(&value, bytes.data(), 4);
|
|
return pretty_print::to_symbol(fmt::format("#x{:x}", u64(value)));
|
|
} else if (ts.tc(TypeSpec("int32"), type)) {
|
|
ASSERT(bytes.size() == 4);
|
|
s32 value;
|
|
memcpy(&value, bytes.data(), 4);
|
|
if (value > 100) {
|
|
return pretty_print::to_symbol(fmt::format("#x{:x}", value));
|
|
} else {
|
|
return pretty_print::to_symbol(fmt::format("{}", value));
|
|
}
|
|
} else if (ts.tc(TypeSpec("uint16"), type)) {
|
|
ASSERT(bytes.size() == 2);
|
|
u16 value;
|
|
memcpy(&value, bytes.data(), 2);
|
|
return pretty_print::to_symbol(fmt::format("#x{:x}", u64(value)));
|
|
} else if (ts.tc(TypeSpec("int16"), type)) {
|
|
ASSERT(bytes.size() == 2);
|
|
s16 value;
|
|
memcpy(&value, bytes.data(), 2);
|
|
if (value > 100) {
|
|
return pretty_print::to_symbol(fmt::format("#x{:x}", value));
|
|
} else {
|
|
return pretty_print::to_symbol(fmt::format("{}", value));
|
|
}
|
|
} else if (ts.tc(TypeSpec("int8"), type)) {
|
|
ASSERT(bytes.size() == 1);
|
|
s8 value;
|
|
memcpy(&value, bytes.data(), 1);
|
|
if (value > 5) {
|
|
return pretty_print::to_symbol(fmt::format("#x{:x}", value));
|
|
} else {
|
|
return pretty_print::to_symbol(fmt::format("{}", value));
|
|
}
|
|
} else if (type == TypeSpec("seconds") || type == TypeSpec("time-frame")) {
|
|
ASSERT(bytes.size() == 8);
|
|
s64 value;
|
|
memcpy(&value, bytes.data(), 8);
|
|
|
|
// only rewrite if exact.
|
|
s64 seconds_int = value / (s64)TICKS_PER_SECOND;
|
|
if (seconds_int * (s64)TICKS_PER_SECOND == value) {
|
|
return pretty_print::to_symbol(fmt::format("(seconds {})", seconds_int));
|
|
}
|
|
double seconds = (double)value / TICKS_PER_SECOND;
|
|
if (seconds * TICKS_PER_SECOND == value) {
|
|
return pretty_print::to_symbol(fmt::format("(seconds {})", float_to_string(seconds, false)));
|
|
}
|
|
return pretty_print::to_symbol(fmt::format("#x{:x}", value));
|
|
} else if (ts.tc(TypeSpec("uint64"), type)) {
|
|
ASSERT(bytes.size() == 8);
|
|
u64 value;
|
|
memcpy(&value, bytes.data(), 8);
|
|
return pretty_print::to_symbol(fmt::format("#x{:x}", value));
|
|
} else if (ts.tc(TypeSpec("int64"), type)) {
|
|
ASSERT(bytes.size() == 8);
|
|
s64 value;
|
|
memcpy(&value, bytes.data(), 8);
|
|
if (value > 100) {
|
|
return pretty_print::to_symbol(fmt::format("#x{:x}", value));
|
|
} else {
|
|
return pretty_print::to_symbol(fmt::format("{}", value));
|
|
}
|
|
} else if (type == TypeSpec("meters")) {
|
|
ASSERT(bytes.size() == 4);
|
|
float value;
|
|
memcpy(&value, bytes.data(), 4);
|
|
double meters = (double)value / METER_LENGTH;
|
|
auto rep = pretty_print::float_representation(meters);
|
|
if (rep.print().find("the-as") != std::string::npos) {
|
|
return rep;
|
|
// return pretty_print::build_list("the-as", "meters", rep);
|
|
} else {
|
|
return pretty_print::to_symbol(fmt::format("(meters {})", meters_to_string(value)));
|
|
}
|
|
} else if (type == TypeSpec("degrees")) {
|
|
ASSERT(bytes.size() == 4);
|
|
float value;
|
|
memcpy(&value, bytes.data(), 4);
|
|
double degrees = (double)value / DEGREES_LENGTH;
|
|
return pretty_print::build_list("degrees", pretty_print::float_representation(degrees));
|
|
} else if (ts.tc(TypeSpec("float"), type)) {
|
|
ASSERT(bytes.size() == 4);
|
|
float value;
|
|
memcpy(&value, bytes.data(), 4);
|
|
return pretty_print::float_representation(value);
|
|
} else if (ts.tc(TypeSpec("uint8"), type)) {
|
|
ASSERT(bytes.size() == 1);
|
|
u8 value;
|
|
memcpy(&value, bytes.data(), 1);
|
|
return pretty_print::to_symbol(fmt::format("#x{:x}", value));
|
|
} else {
|
|
throw std::runtime_error(fmt::format("decompile_value failed on a {}", type.print()));
|
|
}
|
|
}
|
|
|
|
goos::Object decompile_boxed_array(const DecompilerLabel& label,
|
|
const std::vector<DecompilerLabel>& labels,
|
|
const std::vector<std::vector<LinkedWord>>& words,
|
|
const TypeSystem& ts,
|
|
const LinkedObjectFile* file,
|
|
const std::optional<TypeSpec>& content_type_override) {
|
|
TypeSpec content_type;
|
|
auto type_ptr_word_idx = (label.offset / 4) - 1;
|
|
if ((label.offset % 8) == 4) {
|
|
auto& type_ptr = words.at(label.target_segment).at(type_ptr_word_idx);
|
|
if (type_ptr.kind() != LinkedWord::TYPE_PTR) {
|
|
throw std::runtime_error("Invalid basic in decompile_boxed_array");
|
|
}
|
|
if (type_ptr.symbol_name() == "array") {
|
|
auto content_type_ptr_word_idx = type_ptr_word_idx + 3;
|
|
auto& content_type_ptr = words.at(label.target_segment).at(content_type_ptr_word_idx);
|
|
if (content_type_ptr.kind() != LinkedWord::TYPE_PTR) {
|
|
throw std::runtime_error("Invalid content in decompile_boxed_array");
|
|
}
|
|
content_type = TypeSpec(content_type_ptr.symbol_name());
|
|
} else {
|
|
throw std::runtime_error("Wrong basic type in decompile_boxed_array");
|
|
}
|
|
} else {
|
|
throw std::runtime_error("Invalid alignment in decompile_boxed_array");
|
|
}
|
|
|
|
if (content_type_override) {
|
|
content_type = *content_type_override;
|
|
}
|
|
|
|
// now get the size
|
|
auto& size_word_1 = words.at(label.target_segment).at(type_ptr_word_idx + 1);
|
|
auto& size_word_2 = words.at(label.target_segment).at(type_ptr_word_idx + 2);
|
|
auto first_elt_word_idx = type_ptr_word_idx + 4;
|
|
|
|
if (size_word_1.kind() != LinkedWord::PLAIN_DATA ||
|
|
size_word_2.kind() != LinkedWord::PLAIN_DATA) {
|
|
throw std::runtime_error("Invalid size in decompile_boxed_array");
|
|
}
|
|
|
|
int array_length = size_word_1.data;
|
|
int array_allocated_length = size_word_2.data;
|
|
|
|
auto content_type_info = ts.lookup_type(content_type);
|
|
if (content_type_info->is_reference() || content_type == TypeSpec("object")) {
|
|
// easy, stride of 4.
|
|
std::vector<goos::Object> result = {
|
|
pretty_print::to_symbol("new"), pretty_print::to_symbol("'static"),
|
|
pretty_print::to_symbol("'boxed-array"),
|
|
pretty_print::to_symbol(fmt::format(":type {} :length {} :allocated-length {}",
|
|
content_type.print(), array_length,
|
|
array_allocated_length))};
|
|
|
|
for (int elt = 0; elt < array_length; elt++) {
|
|
auto& word = words.at(label.target_segment).at(first_elt_word_idx + elt);
|
|
if (word.kind() == LinkedWord::PLAIN_DATA && word.data == 0) {
|
|
result.push_back(pretty_print::to_symbol("0"));
|
|
} else if (word.kind() == LinkedWord::PTR) {
|
|
if (content_type == TypeSpec("object")) {
|
|
result.push_back(
|
|
decompile_at_label_guess_type(labels.at(word.label_id()), labels, words, ts, file));
|
|
} else {
|
|
result.push_back(decompile_at_label(content_type, labels.at(word.label_id()), labels,
|
|
words, ts, file));
|
|
}
|
|
} else if (word.kind() == LinkedWord::SYM_PTR) {
|
|
result.push_back(pretty_print::to_symbol(fmt::format("'{}", word.symbol_name())));
|
|
} else {
|
|
if (content_type == TypeSpec("object") && word.kind() == LinkedWord::PLAIN_DATA &&
|
|
(word.data & 0b111) == 0) {
|
|
s32 val = word.data;
|
|
result.push_back(pretty_print::to_symbol(fmt::format("(the binteger {})", val / 8)));
|
|
} else {
|
|
throw std::runtime_error(
|
|
fmt::format("Unknown content type in boxed array of references, word idx {}",
|
|
first_elt_word_idx + elt));
|
|
}
|
|
}
|
|
}
|
|
|
|
return pretty_print::build_list(result);
|
|
} else if (content_type.base_type() == "inline-array") {
|
|
std::vector<goos::Object> result = {
|
|
pretty_print::to_symbol("new"), pretty_print::to_symbol("'static"),
|
|
pretty_print::to_symbol("'boxed-array"),
|
|
pretty_print::to_symbol(fmt::format(":type {} :length {} :allocated-length {}",
|
|
content_type.print(), array_length,
|
|
array_allocated_length))};
|
|
|
|
for (int elt = 0; elt < array_length; elt++) {
|
|
auto& word = words.at(label.target_segment).at(first_elt_word_idx + elt);
|
|
auto segment = labels.at(word.label_id()).target_segment;
|
|
result.push_back(decomp_ref_to_inline_array_guess_size(
|
|
words.at(segment), labels, segment, (first_elt_word_idx + elt) * 4, ts, words, file,
|
|
content_type.get_single_arg(), ts.get_deref_info(content_type).stride));
|
|
}
|
|
|
|
return pretty_print::build_list(result);
|
|
} else {
|
|
// value array
|
|
std::vector<goos::Object> result = {
|
|
pretty_print::to_symbol("new"), pretty_print::to_symbol("'static"),
|
|
pretty_print::to_symbol("'boxed-array"),
|
|
pretty_print::to_symbol(fmt::format(":type {} :length {} :allocated-length {}",
|
|
content_type.print(), array_length,
|
|
array_allocated_length))};
|
|
|
|
auto stride = content_type_info->get_size_in_memory();
|
|
for (int i = 0; i < array_length; i++) {
|
|
auto start = first_elt_word_idx * 4 + stride * i;
|
|
auto end = start + content_type_info->get_size_in_memory();
|
|
std::vector<u8> elt_bytes;
|
|
for (int j = start; j < end; j++) {
|
|
auto& word = words.at(label.target_segment).at(j / 4);
|
|
if (word.kind() != LinkedWord::PLAIN_DATA) {
|
|
throw std::runtime_error(
|
|
fmt::format("Got bad word of kind {} in boxed array of values", word.kind()));
|
|
}
|
|
elt_bytes.push_back(word.get_byte(j % 4));
|
|
}
|
|
ASSERT(content_type != TypeSpec("uint128"));
|
|
result.push_back(decompile_value(content_type, elt_bytes, ts));
|
|
}
|
|
return pretty_print::build_list(result);
|
|
}
|
|
}
|
|
|
|
namespace {
|
|
goos::Object decompile_pair_elt(const LinkedWord& word,
|
|
const std::vector<DecompilerLabel>& labels,
|
|
const std::vector<std::vector<LinkedWord>>& words,
|
|
const TypeSystem& ts,
|
|
const LinkedObjectFile* file) {
|
|
if (word.kind() == LinkedWord::PTR) {
|
|
auto& label = labels.at(word.label_id());
|
|
auto guessed_type = get_type_of_label(label, words);
|
|
if (!guessed_type.has_value()) {
|
|
throw std::runtime_error("Could not guess the type of " + label.name);
|
|
}
|
|
|
|
if (guessed_type == TypeSpec("pair")) {
|
|
return decompile_pair(label, labels, words, ts, false, file);
|
|
}
|
|
|
|
return decompile_at_label(*guessed_type, label, labels, words, ts, file);
|
|
} else if (word.kind() == LinkedWord::PLAIN_DATA && word.data == 0) {
|
|
// do nothing, the default is zero?
|
|
return pretty_print::to_symbol("0");
|
|
} else if (word.kind() == LinkedWord::SYM_PTR) {
|
|
// never quote symbols in a list.
|
|
return pretty_print::to_symbol(fmt::format("{}", word.symbol_name()));
|
|
} else if (word.kind() == LinkedWord::EMPTY_PTR) {
|
|
return pretty_print::to_symbol("'()");
|
|
} else if (word.kind() == LinkedWord::PLAIN_DATA && (word.data & 0b111) == 0) {
|
|
return pretty_print::to_symbol(fmt::format("{}", ((s32)word.data) >> 3)); // binteger assumed
|
|
} else if (word.kind() == LinkedWord::PLAIN_DATA) {
|
|
return pretty_print::to_symbol(fmt::format("#x{:x}", word.data));
|
|
} else {
|
|
throw std::runtime_error(fmt::format("Pair elt did not have a good word kind: k {} d {}",
|
|
(int)word.kind(), word.data));
|
|
}
|
|
}
|
|
} // namespace
|
|
|
|
goos::Object decompile_pair(const DecompilerLabel& label,
|
|
const std::vector<DecompilerLabel>& labels,
|
|
const std::vector<std::vector<LinkedWord>>& words,
|
|
const TypeSystem& ts,
|
|
bool add_quote,
|
|
const LinkedObjectFile* file) {
|
|
if ((label.offset % 8) != 2) {
|
|
if ((label.offset % 4) != 0) {
|
|
throw std::runtime_error(fmt::format("Invalid alignment for pair {}\n", label.offset % 16));
|
|
} else {
|
|
auto& word = words.at(label.target_segment).at(label.offset / 4);
|
|
if (word.kind() != LinkedWord::EMPTY_PTR) {
|
|
throw std::runtime_error(
|
|
fmt::format("Based on alignment, expected to get empty list for pair, but didn't"));
|
|
}
|
|
return pretty_print::to_symbol("'()");
|
|
}
|
|
}
|
|
|
|
std::vector<goos::Object> list_tokens;
|
|
auto to_print = label;
|
|
|
|
for (int iter = 0;; iter++) {
|
|
if (iter > 10000) {
|
|
throw std::runtime_error(
|
|
"Exceeded 10,000 look ups while trying to follow a linked list. Giving up, the list is "
|
|
"possibly circular. Increase the limit in data_decompile.cpp if you really need more.");
|
|
}
|
|
|
|
if ((to_print.offset % 8) == 2) {
|
|
// continue
|
|
auto car_word = words.at(to_print.target_segment).at((to_print.offset - 2) / 4);
|
|
list_tokens.push_back(decompile_pair_elt(car_word, labels, words, ts, file));
|
|
|
|
auto cdr_word = words.at(to_print.target_segment).at((to_print.offset + 2) / 4);
|
|
// if empty
|
|
if (cdr_word.kind() == LinkedWord::EMPTY_PTR) {
|
|
if (add_quote) {
|
|
return pretty_print::build_list("quote", pretty_print::build_list(list_tokens));
|
|
} else {
|
|
return pretty_print::build_list(list_tokens);
|
|
}
|
|
}
|
|
// if pointer
|
|
if (cdr_word.kind() == LinkedWord::PTR) {
|
|
to_print = labels.at(cdr_word.label_id());
|
|
continue;
|
|
}
|
|
// invalid.
|
|
lg::error(
|
|
"There is an improper list. This is probably okay, but should be checked manually "
|
|
"because we could not find a test case yet.");
|
|
list_tokens.push_back(pretty_print::to_symbol("."));
|
|
list_tokens.push_back(decompile_pair_elt(cdr_word, labels, words, ts, file));
|
|
if (add_quote) {
|
|
return pretty_print::build_list("quote", pretty_print::build_list(list_tokens));
|
|
} else {
|
|
return pretty_print::build_list(list_tokens);
|
|
}
|
|
} else {
|
|
if ((to_print.offset % 4) != 0) {
|
|
throw std::runtime_error(
|
|
fmt::format("Invalid alignment for pair {}\n", to_print.offset % 16));
|
|
} else {
|
|
auto& word = words.at(to_print.target_segment).at(to_print.offset / 4);
|
|
if (word.kind() != LinkedWord::EMPTY_PTR) {
|
|
throw std::runtime_error(
|
|
fmt::format("Based on alignment, expected to get empty list for pair, but didn't"));
|
|
}
|
|
// improper list
|
|
lg::error(
|
|
"There is an improper list. This is probably okay, but should be checked manually "
|
|
"because we "
|
|
"could not find a test case yet.");
|
|
list_tokens.push_back(pretty_print::to_symbol("."));
|
|
list_tokens.push_back(decompile_pair_elt(
|
|
words.at(to_print.target_segment).at(to_print.offset / 4), labels, words, ts, file));
|
|
if (add_quote) {
|
|
return pretty_print::build_list("quote", pretty_print::build_list(list_tokens));
|
|
} else {
|
|
return pretty_print::build_list(list_tokens);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
goos::Object decompile_bitfield(const TypeSpec& type,
|
|
const BitFieldType* type_info,
|
|
const DecompilerLabel& label,
|
|
const std::vector<DecompilerLabel>&,
|
|
const std::vector<std::vector<LinkedWord>>& words,
|
|
const TypeSystem& ts) {
|
|
// read memory
|
|
int start_byte = label.offset;
|
|
int end_byte = start_byte + type_info->get_size_in_memory();
|
|
std::vector<u8> elt_bytes;
|
|
for (int j = start_byte; j < end_byte; j++) {
|
|
auto& word = words.at(label.target_segment).at(j / 4);
|
|
if (word.kind() != LinkedWord::PLAIN_DATA) {
|
|
throw std::runtime_error("Got bad word in static bitfield");
|
|
}
|
|
elt_bytes.push_back(word.get_byte(j % 4));
|
|
}
|
|
|
|
// pad bytes array to 64-bits:
|
|
while (elt_bytes.size() < 8) {
|
|
elt_bytes.push_back(0);
|
|
}
|
|
ASSERT(elt_bytes.size() == 8);
|
|
|
|
// read as u64
|
|
u64 value = *(u64*)(elt_bytes.data());
|
|
auto defs = decompile_bitfield_from_int(type, ts, value);
|
|
return bitfield_defs_print(type, defs);
|
|
}
|
|
|
|
std::optional<std::vector<BitFieldConstantDef>> try_decompile_bitfield_from_int(
|
|
const TypeSpec& type,
|
|
const TypeSystem& ts,
|
|
u64 value,
|
|
bool require_success,
|
|
std::optional<int> offset) {
|
|
u64 touched_bits = 0;
|
|
std::vector<BitFieldConstantDef> result;
|
|
|
|
auto type_info = dynamic_cast<BitFieldType*>(ts.lookup_type(type));
|
|
ASSERT(type_info);
|
|
|
|
int start_bit = 0;
|
|
|
|
if (offset) {
|
|
start_bit = *offset;
|
|
}
|
|
int end_bit = 64 + start_bit;
|
|
|
|
for (auto& field : type_info->fields()) {
|
|
if (field.skip_in_decomp() || field.offset() < start_bit ||
|
|
(field.offset() + field.size()) > end_bit) {
|
|
continue;
|
|
}
|
|
|
|
u64 bitfield_value;
|
|
bool is_signed = ts.tc(TypeSpec("int"), field.type()) && !ts.tc(TypeSpec("uint"), field.type());
|
|
if (is_signed) {
|
|
// signed
|
|
s64 signed_value = value;
|
|
bitfield_value =
|
|
extract_bitfield<s64>(signed_value, field.offset() - start_bit, field.size());
|
|
} else {
|
|
// unsigned
|
|
bitfield_value = extract_bitfield<u64>(value, field.offset() - start_bit, field.size());
|
|
}
|
|
|
|
if (bitfield_value != 0) {
|
|
BitFieldConstantDef def;
|
|
def.value = bitfield_value;
|
|
def.field_name = field.name();
|
|
def.is_signed = is_signed;
|
|
auto enum_info = ts.try_enum_lookup(field.type());
|
|
if (enum_info && !enum_info->is_bitfield()) {
|
|
auto name = decompile_int_enum_from_int(field.type(), ts, bitfield_value);
|
|
def.enum_constant = fmt::format("({} {})", field.type().print(), name);
|
|
}
|
|
|
|
auto nested_bitfield_type = dynamic_cast<BitFieldType*>(ts.lookup_type(field.type()));
|
|
if (nested_bitfield_type) {
|
|
BitFieldConstantDef::NestedField nested;
|
|
nested.field_type = field.type();
|
|
// never nested 128-bit bitfields
|
|
nested.fields =
|
|
*try_decompile_bitfield_from_int(field.type(), ts, bitfield_value, true, {});
|
|
def.nested_field = nested;
|
|
}
|
|
result.push_back(def);
|
|
}
|
|
|
|
for (int i = field.offset() - start_bit; i < field.offset() + field.size() - start_bit; i++) {
|
|
touched_bits |= (u64(1) << i);
|
|
}
|
|
}
|
|
|
|
u64 untouched_but_set = value & (~touched_bits);
|
|
|
|
if (untouched_but_set) {
|
|
if (require_success) {
|
|
throw std::runtime_error(fmt::format(
|
|
"Failed to decompile static bitfield of type {}. Original value is 0x{:x} but "
|
|
"we didn't touch",
|
|
type.print(), value, untouched_but_set));
|
|
}
|
|
return {};
|
|
}
|
|
return result;
|
|
}
|
|
|
|
std::vector<BitFieldConstantDef> decompile_bitfield_from_int(const TypeSpec& type,
|
|
const TypeSystem& ts,
|
|
u64 value) {
|
|
return *try_decompile_bitfield_from_int(type, ts, value, true, {});
|
|
}
|
|
|
|
std::vector<std::string> decompile_bitfield_enum_from_int(const TypeSpec& type,
|
|
const TypeSystem& ts,
|
|
u64 value) {
|
|
u64 reconstructed = 0;
|
|
std::vector<std::string> result;
|
|
auto type_info = ts.try_enum_lookup(type.base_type());
|
|
ASSERT(type_info);
|
|
ASSERT(type_info->is_bitfield());
|
|
|
|
std::vector<std::string> bit_sorted_names;
|
|
for (auto& field : type_info->entries()) {
|
|
bit_sorted_names.push_back(field.first);
|
|
}
|
|
std::sort(bit_sorted_names.begin(), bit_sorted_names.end(),
|
|
[&](const std::string& a, const std::string& b) {
|
|
return type_info->entries().at(a) < type_info->entries().at(b);
|
|
});
|
|
|
|
for (auto& kv : type_info->entries()) {
|
|
u64 mask = ((u64)1) << kv.second;
|
|
if (value & mask) {
|
|
reconstructed |= mask;
|
|
result.push_back(kv.first);
|
|
}
|
|
}
|
|
|
|
int bit_count = 0;
|
|
{
|
|
u64 x = value;
|
|
while (x) {
|
|
if (x & 1) {
|
|
bit_count++;
|
|
}
|
|
x >>= 1;
|
|
}
|
|
}
|
|
|
|
if (reconstructed != value) {
|
|
throw std::runtime_error(fmt::format(
|
|
"Failed to decompile bitfield enum {}. Original value is 0x{:x} but we could only "
|
|
"make 0x{:x} using the available fields.",
|
|
type.print(), value, reconstructed));
|
|
}
|
|
|
|
if (bit_count == (int)result.size()) {
|
|
// unordered map will give us these fields in a weird order, let's order them explicitly.
|
|
// because we have exactly one name per bit, we can just order them in bit order.
|
|
std::sort(result.begin(), result.end(), [&](const std::string& a, const std::string& b) {
|
|
return type_info->entries().at(a) < type_info->entries().at(b);
|
|
});
|
|
} else {
|
|
// we have multiple. Just sort alphabetically and complain.
|
|
lg::warn("Enum type {} has multiple entries with the same value.", type_info->get_name());
|
|
std::sort(result.begin(), result.end());
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
std::string decompile_int_enum_from_int(const TypeSpec& type, const TypeSystem& ts, u64 value) {
|
|
auto type_info = ts.try_enum_lookup(type.base_type());
|
|
ASSERT(type_info);
|
|
ASSERT(!type_info->is_bitfield());
|
|
|
|
std::vector<std::string> matches;
|
|
for (auto& field : type_info->entries()) {
|
|
if ((u64)field.second == value) {
|
|
matches.push_back(field.first);
|
|
}
|
|
}
|
|
|
|
if (matches.size() == 0) {
|
|
throw std::runtime_error(
|
|
fmt::format("Failed to decompile integer enum. Value {} (0x{:x}) wasn't found in enum {}",
|
|
value, value, type_info->get_name()));
|
|
} else if (matches.size() == 1) {
|
|
return matches.front();
|
|
} else {
|
|
std::sort(matches.begin(), matches.end());
|
|
return matches.front();
|
|
}
|
|
}
|
|
} // namespace decompiler
|