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https://github.com/open-goal/jak-project.git
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27bb6c6384
* [decompiler] `defpart` and `defpartgroup` * support sounds in part defs natively * make `meters_to_string` * update refs * clang * make macros in pair only work inside `(unquote ...` * update source * update finish * fix
2009 lines
76 KiB
C++
2009 lines
76 KiB
C++
#pragma once
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#include <vector>
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#include <unordered_set>
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#include <memory>
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#include <functional>
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#include "decompiler/Disasm/Register.h"
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#include "decompiler/IR2/AtomicOp.h"
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#include "common/goos/Object.h"
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#include "common/type_system/TypeSystem.h"
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#include "decompiler/Disasm/DecompilerLabel.h"
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#include "common/type_system/state.h"
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#include "decompiler/IR2/LabelDB.h"
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#include "common/math/Vector.h"
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#include "decompiler/ObjectFile/LinkedWord.h"
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namespace decompiler {
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class Form;
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class Env;
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class FormStack;
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/*!
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* A "FormElement" represents a single LISP form that's not a begin.
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* This is a abstract base class that all types of forms should be based on.
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*/
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class FormElement {
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public:
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Form* parent_form = nullptr;
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goos::Object to_form(const Env& env) const;
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virtual goos::Object to_form_internal(const Env& env) const = 0;
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virtual goos::Object to_form_as_condition_internal(const Env& env) const;
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virtual ~FormElement() = default;
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virtual void apply(const std::function<void(FormElement*)>& f) = 0;
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virtual void apply_form(const std::function<void(Form*)>& f) = 0;
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virtual bool is_sequence_point() const { return true; }
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virtual void collect_vars(RegAccessSet& vars, bool recursive) const = 0;
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virtual void get_modified_regs(RegSet& regs) const = 0;
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virtual bool active() const;
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// is this element reasonable to put directly in an if?
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// of course it's possible to put whatever you want, but it looks weird to do something like
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// (if (condition?)
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// <some huge thing hundreds of lines long>
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// <some other huge thing>
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// )
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virtual bool allow_in_if() const { return true; }
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std::string to_string(const Env& env) const;
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bool has_side_effects();
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// push the result of this operation to the operation stack
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virtual void push_to_stack(const Env& env, FormPool& pool, FormStack& stack);
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virtual void update_from_stack(const Env& env,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects);
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bool is_popped() const { return m_popped; }
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FormElement() = default;
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FormElement(const FormElement& other) = delete;
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FormElement& operator=(const FormElement& other) = delete;
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void mark_popped() {
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assert(!m_popped);
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m_popped = true;
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}
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protected:
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friend class Form;
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bool m_popped = false;
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};
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/*!
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* A SimpleExpressionElement is a form which has the value of a SimpleExpression.
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* Like a SimpleExpression, it has no side effects.
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*/
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class SimpleExpressionElement : public FormElement {
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public:
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explicit SimpleExpressionElement(SimpleExpression expr, int my_idx);
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goos::Object to_form_internal(const Env& env) const override;
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void apply(const std::function<void(FormElement*)>& f) override;
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void apply_form(const std::function<void(Form*)>& f) override;
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bool is_sequence_point() const override;
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void collect_vars(RegAccessSet& vars, bool recursive) const override;
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void update_from_stack(const Env& env,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects) override;
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void get_modified_regs(RegSet& regs) const override;
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void update_from_stack_identity(const Env& env,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects);
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void update_from_stack_gpr_to_fpr(const Env& env,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects);
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void update_from_stack_fpr_to_gpr(const Env& env,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects);
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void update_from_stack_div_s(const Env& env,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects);
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void update_from_stack_float_2(const Env& env,
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FixedOperatorKind kind,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects);
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void update_from_stack_float_2_nestable(const Env& env,
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FixedOperatorKind kind,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects);
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void update_from_stack_float_1(const Env& env,
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FixedOperatorKind kind,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects);
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void update_from_stack_si_1(const Env& env,
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FixedOperatorKind kind,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects);
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void update_from_stack_add_i(const Env& env,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects);
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void update_from_stack_mult_si(const Env& env,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects);
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void update_from_stack_lognot(const Env& env,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects);
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void update_from_stack_force_si_2(const Env& env,
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FixedOperatorKind kind,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects,
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bool reverse);
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void update_from_stack_force_ui_2(const Env& env,
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FixedOperatorKind kind,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects);
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void update_from_stack_int_to_float(const Env& env,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects);
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void update_from_stack_subu_l32_s7(const Env& env,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects);
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void update_from_stack_float_to_int(const Env& env,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects);
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void update_from_stack_copy_first_int_2(const Env& env,
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FixedOperatorKind kind,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects);
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void update_from_stack_left_shift(const Env& env,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects);
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void update_from_stack_right_shift_logic(const Env& env,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects);
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void update_from_stack_right_shift_arith(const Env& env,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects);
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FormElement* update_from_stack_logor_or_logand_helper(const Env& env,
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FixedOperatorKind kind,
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FormPool& pool,
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FormStack& stack,
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bool allow_side_effects);
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void update_from_stack_logor_or_logand(const Env& env,
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FixedOperatorKind kind,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects);
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void update_from_stack_pcypld(const Env& env,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects);
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void update_from_stack_vector_plus_minus_cross(FixedOperatorKind op_kind,
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const Env& env,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects);
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void update_from_stack_vector_float_product(const Env& env,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects);
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void update_from_stack_vector_dot(FixedOperatorKind kind,
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const Env& env,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects);
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const SimpleExpression& expr() const { return m_expr; }
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private:
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SimpleExpression m_expr;
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int m_my_idx;
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};
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/*!
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* Represents storing a value into memory.
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* This is only used as a placeholder if AtomicOpForm fails to convert it to something nicer.
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*/
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class StoreElement : public FormElement {
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public:
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explicit StoreElement(const StoreOp* op);
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goos::Object to_form_internal(const Env& env) const override;
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void apply(const std::function<void(FormElement*)>& f) override;
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void apply_form(const std::function<void(Form*)>& f) override;
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void collect_vars(RegAccessSet& vars, bool recursive) const override;
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void get_modified_regs(RegSet& regs) const override;
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void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
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private:
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// todo - we may eventually want to use a different representation for more
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// complicated store paths.
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const StoreOp* m_op;
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};
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/*!
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* Representing a value loaded from memory. Not the destination.
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* Unclear if this should have some common base with store?
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*/
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class LoadSourceElement : public FormElement {
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public:
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LoadSourceElement(Form* addr, int size, LoadVarOp::Kind kind);
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goos::Object to_form_internal(const Env& env) const override;
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void apply(const std::function<void(FormElement*)>& f) override;
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void apply_form(const std::function<void(Form*)>& f) override;
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void collect_vars(RegAccessSet& vars, bool recursive) const override;
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int size() const { return m_size; }
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LoadVarOp::Kind kind() const { return m_kind; }
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const Form* location() const { return m_addr; }
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Form* location() { return m_addr; }
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void update_from_stack(const Env& env,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects) override;
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void get_modified_regs(RegSet& regs) const override;
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private:
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Form* m_addr = nullptr;
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int m_size = -1;
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LoadVarOp::Kind m_kind;
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};
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/*!
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* Representing an indivisible thing, like an integer constant variable, etc.
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* Just a wrapper around SimpleAtom.
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*/
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class SimpleAtomElement : public FormElement {
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public:
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explicit SimpleAtomElement(const SimpleAtom& var, bool omit_var_cast = false);
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goos::Object to_form_internal(const Env& env) const override;
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void apply(const std::function<void(FormElement*)>& f) override;
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void apply_form(const std::function<void(Form*)>& f) override;
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void collect_vars(RegAccessSet& vars, bool recursive) const override;
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void get_modified_regs(RegSet& regs) const override;
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const SimpleAtom& atom() const { return m_atom; }
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void update_from_stack(const Env& env,
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FormPool& pool,
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FormStack& stack,
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std::vector<FormElement*>* result,
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bool allow_side_effects) override;
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private:
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SimpleAtom m_atom;
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bool m_omit_var_cast;
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};
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/*!
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* Set a variable to a Form. This is the set! form to be used for expression building.
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*/
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class SetVarElement : public FormElement {
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public:
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SetVarElement(const RegisterAccess& var,
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Form* value,
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bool is_sequence_point,
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TypeSpec src_type,
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const SetVarInfo& info = {});
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goos::Object to_form_internal(const Env& env) const override;
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void apply(const std::function<void(FormElement*)>& f) override;
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void apply_form(const std::function<void(Form*)>& f) override;
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bool is_sequence_point() const override;
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void collect_vars(RegAccessSet& vars, bool recursive) const override;
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void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
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void get_modified_regs(RegSet& regs) const override;
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bool active() const override;
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const RegisterAccess& dst() const { return m_dst; }
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const Form* src() const { return m_src; }
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Form* src() { return m_src; }
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bool is_eliminated_coloring_move() const { return m_var_info.is_eliminated_coloring_move; }
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void eliminate_as_coloring_move() { m_var_info.is_eliminated_coloring_move = true; }
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bool is_dead_set() const { return m_var_info.is_dead_set; }
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void mark_as_dead_set() { m_var_info.is_dead_set = true; }
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bool is_dead_false_set() const { return m_var_info.is_dead_false; }
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void mark_as_dead_false() { m_var_info.is_dead_false = true; }
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const SetVarInfo& info() const { return m_var_info; }
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const TypeSpec src_type() const { return m_src_type; }
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std::optional<TypeSpec> required_cast(const Env& env) const;
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private:
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RegisterAccess m_dst;
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Form* m_src = nullptr;
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bool m_is_sequence_point = true;
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TypeSpec m_src_type;
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SetVarInfo m_var_info;
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};
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class StoreInSymbolElement : public FormElement {
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public:
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StoreInSymbolElement(std::string sym_name,
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SimpleExpression value,
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std::optional<TypeSpec> cast_for_set,
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std::optional<TypeSpec> cast_for_define,
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int my_idx);
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goos::Object to_form_internal(const Env& env) const override;
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void apply(const std::function<void(FormElement*)>& f) override;
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void apply_form(const std::function<void(Form*)>& f) override;
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void collect_vars(RegAccessSet& vars, bool recursive) const override;
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void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
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void get_modified_regs(RegSet& regs) const override;
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private:
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std::string m_sym_name;
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SimpleExpression m_value;
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std::optional<TypeSpec> m_cast_for_set;
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std::optional<TypeSpec> m_cast_for_define;
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int m_my_idx = -1;
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};
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class StoreInPairElement : public FormElement {
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public:
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StoreInPairElement(bool is_car, RegisterAccess pair, SimpleExpression value, int my_idx);
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goos::Object to_form_internal(const Env& env) const override;
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void apply(const std::function<void(FormElement*)>& f) override;
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void apply_form(const std::function<void(Form*)>& f) override;
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void collect_vars(RegAccessSet& vars, bool recursive) const override;
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void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
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void get_modified_regs(RegSet& regs) const override;
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private:
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bool m_is_car = false;
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RegisterAccess m_pair;
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SimpleExpression m_value;
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int m_my_idx = -1;
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};
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/*!
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* Like SetVar, but sets a form to another form.
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* This is intended to be used with stores.
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* NOTE: do not use this when SetVarElement could be used instead.
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*/
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class SetFormFormElement : public FormElement {
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public:
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SetFormFormElement(Form* dst,
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Form* src,
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std::optional<TypeSpec> cast_for_set = {},
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std::optional<TypeSpec> cast_for_define = {});
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goos::Object to_form_internal(const Env& env) const override;
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goos::Object to_form_for_define(const Env& env) const;
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void apply(const std::function<void(FormElement*)>& f) override;
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void apply_form(const std::function<void(Form*)>& f) override;
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bool is_sequence_point() const override;
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void collect_vars(RegAccessSet& vars, bool recursive) const override;
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void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
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void get_modified_regs(RegSet& regs) const override;
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const Form* src() const { return m_src; }
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const Form* dst() const { return m_dst; }
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Form* src() { return m_src; }
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Form* dst() { return m_dst; }
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private:
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int m_real_push_count = 0;
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Form* m_dst = nullptr;
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Form* m_src = nullptr;
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std::optional<TypeSpec> m_cast_for_set, m_cast_for_define;
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};
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/*!
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* A wrapper around a single AtomicOp.
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* The "important" special AtomicOps have their own Form type, like FuncitonCallElement.
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*/
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class AtomicOpElement : public FormElement {
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public:
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explicit AtomicOpElement(AtomicOp* op);
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goos::Object to_form_internal(const Env& env) const override;
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void apply(const std::function<void(FormElement*)>& f) override;
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void apply_form(const std::function<void(Form*)>& f) override;
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void collect_vars(RegAccessSet& vars, bool recursive) const override;
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void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
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void get_modified_regs(RegSet& regs) const override;
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const AtomicOp* op() const { return m_op; }
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AtomicOp* op() { return m_op; }
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private:
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AtomicOp* m_op = nullptr; // not const because of asm likely merging
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};
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class AsmBranchElement : public FormElement {
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public:
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AsmBranchElement(AsmBranchOp* branch_op, Form* branch_delay, bool likely);
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goos::Object to_form_internal(const Env& env) const override;
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void apply(const std::function<void(FormElement*)>& f) override;
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void apply_form(const std::function<void(Form*)>& f) override;
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void collect_vars(RegAccessSet& vars, bool recursive) const override;
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void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
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void get_modified_regs(RegSet& regs) const override;
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private:
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AsmBranchOp* m_branch_op = nullptr;
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Form* m_branch_delay = nullptr;
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bool m_likely = false;
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};
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|
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class TranslatedAsmBranch : public FormElement {
|
|
public:
|
|
TranslatedAsmBranch(Form* branch_condition, Form* branch_delay, int label_id, bool likely);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
// void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
|
|
private:
|
|
Form* m_branch_condition = nullptr;
|
|
Form* m_branch_delay = nullptr;
|
|
int m_label_id = -1;
|
|
bool m_likely = false;
|
|
};
|
|
|
|
/*!
|
|
* A wrapper around a single AsmOp
|
|
*/
|
|
class AsmOpElement : public FormElement {
|
|
public:
|
|
explicit AsmOpElement(const AsmOp* op);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
const AsmOp* op() const { return m_op; }
|
|
|
|
private:
|
|
const AsmOp* m_op;
|
|
};
|
|
|
|
/*!
|
|
* A wrapper around a single AsmOp, with OpenGOAL considerations
|
|
*/
|
|
class OpenGoalAsmOpElement : public FormElement {
|
|
public:
|
|
explicit OpenGoalAsmOpElement(const AsmOp* op);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void collect_vf_regs(RegSet& regs) const;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
const AsmOp* op() const { return m_op; }
|
|
|
|
private:
|
|
const AsmOp* m_op;
|
|
};
|
|
|
|
/*!
|
|
* A "condition" like (< a b). This can be used as a boolean value directly: (set! a (< b c))
|
|
* or it can be used as a branch condition: (if (< a b)). As a result, it implements both push
|
|
* and update.
|
|
*
|
|
* In the first case, it can be either a conditional move or actually branching. GOAL seems to use
|
|
* the branching when sometimes it could have used the conditional move, and for now, we don't
|
|
* care about the difference.
|
|
*/
|
|
class ConditionElement : public FormElement {
|
|
public:
|
|
ConditionElement(IR2_Condition::Kind kind,
|
|
std::optional<SimpleAtom> src0,
|
|
std::optional<SimpleAtom> src1,
|
|
RegSet consumed,
|
|
bool flipped);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
goos::Object to_form_as_condition_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
|
|
void update_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects) override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
void invert();
|
|
const RegSet& consume() const { return m_consumed; }
|
|
|
|
FormElement* make_generic(const Env& env,
|
|
FormPool& pool,
|
|
const std::vector<Form*>& source_forms,
|
|
const std::vector<TypeSpec>& types);
|
|
FormElement* make_zero_check_generic(const Env& env,
|
|
FormPool& pool,
|
|
const std::vector<Form*>& source_forms,
|
|
const std::vector<TypeSpec>& types);
|
|
FormElement* make_nonzero_check_generic(const Env& env,
|
|
FormPool& pool,
|
|
const std::vector<Form*>& source_forms,
|
|
const std::vector<TypeSpec>& types);
|
|
FormElement* make_equal_check_generic(const Env& env,
|
|
FormPool& pool,
|
|
const std::vector<Form*>& source_forms,
|
|
const std::vector<TypeSpec>& types);
|
|
FormElement* make_not_equal_check_generic(const Env& env,
|
|
FormPool& pool,
|
|
const std::vector<Form*>& source_forms,
|
|
const std::vector<TypeSpec>& types);
|
|
FormElement* make_less_than_zero_signed_check_generic(const Env& env,
|
|
FormPool& pool,
|
|
const std::vector<Form*>& source_forms,
|
|
const std::vector<TypeSpec>& types);
|
|
FormElement* make_geq_zero_signed_check_generic(const Env& env,
|
|
FormPool& pool,
|
|
const std::vector<Form*>& source_forms,
|
|
const std::vector<TypeSpec>& types);
|
|
bool allow_in_if() const override { return false; }
|
|
|
|
private:
|
|
IR2_Condition::Kind m_kind;
|
|
std::optional<SimpleAtom> m_src[2];
|
|
RegSet m_consumed;
|
|
bool m_flipped;
|
|
};
|
|
|
|
/*!
|
|
* Wrapper around an AtomicOp call.
|
|
*/
|
|
class FunctionCallElement : public FormElement {
|
|
public:
|
|
explicit FunctionCallElement(const CallOp* op);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void update_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects) override;
|
|
void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
|
|
private:
|
|
const CallOp* m_op;
|
|
};
|
|
|
|
/*!
|
|
* Wrapper around an AtomicOp branch. These are inserted when directly converting blocks to Form,
|
|
* but should be eliminated after the cfg_builder pass completes.
|
|
*/
|
|
class BranchElement : public FormElement {
|
|
public:
|
|
explicit BranchElement(const BranchOp* op);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
|
|
const BranchOp* op() const { return m_op; }
|
|
|
|
private:
|
|
const BranchOp* m_op;
|
|
};
|
|
|
|
/*!
|
|
* Represents a (return-from #f x) form, which immediately returns from the function.
|
|
* This always has some "dead code" after it that can't be reached, which is the "dead_code".
|
|
* We store the dead code because it may contain an unreachable jump to the next place that can
|
|
* be stripped away in later analysis passes. Or they may have written code after the return.
|
|
*/
|
|
class ReturnElement : public FormElement {
|
|
public:
|
|
Form* return_code = nullptr;
|
|
Form* dead_code = nullptr;
|
|
ReturnElement(Form* _return_code, Form* _dead_code);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
std::optional<TypeSpec> return_type;
|
|
};
|
|
|
|
/*!
|
|
* Represents a (return-from Lxxx x) form, which returns from a block which ends before the end
|
|
* of the function. These are used pretty rarely. As a result, I'm not planning to allow these to
|
|
* next within other expressions. This means that the following code:
|
|
*
|
|
* (set! x (block my-block
|
|
* (if (condition?)
|
|
* (return-from my-block 12))
|
|
* 2))
|
|
*
|
|
* Would become
|
|
*
|
|
* (block my-block
|
|
* (when (condition?)
|
|
* (set! x 12)
|
|
* (return-from my-block none))
|
|
* (set! x 2)
|
|
* )
|
|
*
|
|
* which seems fine to me.
|
|
*/
|
|
class BreakElement : public FormElement {
|
|
public:
|
|
Form* return_code = nullptr;
|
|
Form* dead_code = nullptr;
|
|
int lid = -1;
|
|
BreakElement(Form* _return_code, Form* _dead_code, int _lid);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
|
|
};
|
|
|
|
/*!
|
|
* Condition (cond, if, when, unless) which has an "else" case.
|
|
* The condition of the first entry may contain too much and will need to be adjusted later.
|
|
* Example:
|
|
*
|
|
* (set! x 10)
|
|
* (if (something?) ... )
|
|
*
|
|
* might become
|
|
* (if (begin (set! x 10) (something?)) ... )
|
|
*
|
|
* We want to wait until after expressions are built to move the extra stuff up to avoid splitting
|
|
* up a complicated expression used as the condition. But this should happen before variable
|
|
* scoping.
|
|
*/
|
|
class CondWithElseElement : public FormElement {
|
|
public:
|
|
struct Entry {
|
|
Form* condition = nullptr;
|
|
Form* body = nullptr;
|
|
bool cleaned = false;
|
|
};
|
|
std::vector<Entry> entries;
|
|
Form* else_ir = nullptr;
|
|
bool already_rewritten = false;
|
|
CondWithElseElement(std::vector<Entry> _entries, Form* _else_ir);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
bool allow_in_if() const override { return false; }
|
|
};
|
|
|
|
/*!
|
|
* An empty element. This is used to fill the body of control forms with nothing in them.
|
|
* For example, I believe that (cond ((x y) (else none))) will generate an else case with an
|
|
* "empty" and looks different from (cond ((x y))).
|
|
*
|
|
* We _could_ simplify out the use of empty, but I think it's more "authentic" to leave them in, and
|
|
* might give us more clues about how the code was originally written
|
|
*/
|
|
class EmptyElement : public FormElement {
|
|
public:
|
|
EmptyElement() = default;
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
|
|
};
|
|
|
|
/*!
|
|
* Represents an OpenGOAL 'rlet' expressions
|
|
*/
|
|
class RLetElement : public FormElement {
|
|
public:
|
|
enum class RegClass { VF };
|
|
|
|
explicit RLetElement(Form* _body, RegSet _regs);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
goos::Object reg_list() const;
|
|
bool needs_vf0_init() const;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
Form* body = nullptr;
|
|
std::vector<decompiler::Register> sorted_regs;
|
|
};
|
|
|
|
/*!
|
|
* Represents a GOAL while loop and more complicated loops which have the "while" format of checking
|
|
* the condition before the first loop. This will not include infinite while loops.
|
|
* Unlike CondWithElseElement, this will correctly identify the start and end of the condition.
|
|
*/
|
|
class WhileElement : public FormElement {
|
|
public:
|
|
WhileElement(Form* _condition, Form* _body);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
bool allow_in_if() const override { return false; }
|
|
Form* condition = nullptr;
|
|
Form* body = nullptr;
|
|
bool cleaned = false;
|
|
};
|
|
|
|
/*!
|
|
* Represents a GOAL until loop and more complicated loops which use the "until" format of checking
|
|
* the condition after the first iteration. Has the same limitation as CondWithElseElement for the
|
|
* condition.
|
|
*/
|
|
class UntilElement : public FormElement {
|
|
public:
|
|
UntilElement(Form* _condition, Form* _body);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
bool allow_in_if() const override { return false; }
|
|
Form* condition = nullptr;
|
|
Form* body = nullptr;
|
|
};
|
|
|
|
/*!
|
|
* Represents a GOAL short-circuit expression, either AND or OR.
|
|
* The first "element" in ShortCircuitElement may be too large, see the comment on
|
|
* CondWithElseElement
|
|
*/
|
|
class ShortCircuitElement : public FormElement {
|
|
public:
|
|
struct Entry {
|
|
Form* condition = nullptr;
|
|
std::optional<SetVarOp> branch_delay;
|
|
// in the case where there's no else, each delay slot will write #f to the "output" register.
|
|
// this can be with an or <output>, s7, r0
|
|
// Form* output = nullptr; // todo, what? add to collect vars if we need it?
|
|
bool is_output_trick = false;
|
|
bool cleaned = false;
|
|
};
|
|
|
|
enum Kind { UNKNOWN, AND, OR } kind = UNKNOWN;
|
|
|
|
RegisterAccess final_result;
|
|
std::vector<Entry> entries;
|
|
std::optional<bool> used_as_value = std::nullopt;
|
|
bool already_rewritten = false;
|
|
|
|
explicit ShortCircuitElement(std::vector<Entry> _entries);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
|
|
void update_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects) override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
};
|
|
|
|
/*!
|
|
* Represents a GOAL cond/if/when/unless statement which does not have an explicit else case. The
|
|
* compiler will then move #f into the result register in the delay slot. The first condition may be
|
|
* too large at first, see CondWithElseElement
|
|
*/
|
|
class CondNoElseElement : public FormElement {
|
|
public:
|
|
struct Entry {
|
|
Form* condition = nullptr;
|
|
Form* body = nullptr;
|
|
std::optional<RegisterAccess> false_destination;
|
|
FormElement* original_condition_branch = nullptr;
|
|
bool cleaned = false;
|
|
};
|
|
RegisterAccess final_destination;
|
|
bool used_as_value = false;
|
|
bool already_rewritten = false;
|
|
std::vector<Entry> entries;
|
|
explicit CondNoElseElement(std::vector<Entry> _entries);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
void update_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects) override;
|
|
bool allow_in_if() const override { return false; }
|
|
};
|
|
|
|
class CaseElement : public FormElement {
|
|
public:
|
|
struct Entry {
|
|
std::vector<Form*> vals;
|
|
Form* body = nullptr;
|
|
};
|
|
|
|
CaseElement(Form* value, const std::vector<Entry>& entries, Form* else_body);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
bool allow_in_if() const override { return false; }
|
|
|
|
private:
|
|
Form* m_value = nullptr;
|
|
std::vector<Entry> m_entries;
|
|
Form* m_else_body = nullptr; // may be nullptr, if no else.
|
|
};
|
|
|
|
/*!
|
|
* Represents a (abs x) expression.
|
|
*/
|
|
class AbsElement : public FormElement {
|
|
public:
|
|
explicit AbsElement(RegisterAccess _source, RegSet _consumed);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void update_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects) override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
RegisterAccess source;
|
|
RegSet consumed;
|
|
};
|
|
|
|
/*!
|
|
* Represents an (ash x y) expression. There is also an "unsigned" version of this using logical
|
|
* shifts. This only recognizes the fancy version where the shift amount isn't known at compile time
|
|
* and the compiler emits code that branches depending on the sign of the shift amount.
|
|
*/
|
|
class AshElement : public FormElement {
|
|
public:
|
|
RegisterAccess shift_amount, value;
|
|
std::optional<RegisterAccess> clobber;
|
|
bool is_signed = true;
|
|
RegSet consumed;
|
|
AshElement(RegisterAccess _shift_amount,
|
|
RegisterAccess _value,
|
|
std::optional<RegisterAccess> _clobber,
|
|
bool _is_signed,
|
|
RegSet _consumed);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void update_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects) override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
};
|
|
|
|
/*!
|
|
* Represents a form which gets the runtime type of a boxed object. This is for the most general
|
|
* "object" case where we check for pair, binteger, or basic and there's actually branching.
|
|
*/
|
|
class TypeOfElement : public FormElement {
|
|
public:
|
|
Form* value;
|
|
std::optional<RegisterAccess> clobber;
|
|
TypeOfElement(Form* _value, std::optional<RegisterAccess> _clobber);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
void update_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects) override;
|
|
};
|
|
|
|
/*!
|
|
* Represents an unpaired cmove #f. GOAL may emit code like
|
|
* (set! x #t)
|
|
* (... evaluate something)
|
|
* (cmov x y #f)
|
|
* where the stuff in between is potentially very large.
|
|
* GOAL has no "condition move" keyword available to the programmer - this would only happen if when
|
|
* doing something like (set! x (zero? y)), in the code for creating a GOAL boolean.
|
|
*
|
|
* Code like (if x (set! y z)) will branch, the compiler isn't smart enough to use movn/movz here.
|
|
*
|
|
* These cannot be compacted into a single form until expression building, so we leave these
|
|
* placeholders in.
|
|
*
|
|
* Note - some conditionals put the (set! x #t) immediately before the cmove, but not all. Those
|
|
* that do will be correctly recognized and will be a ConditionElement. zero! seems to be the most
|
|
* common one that's split, and it happens reasonably often, so I will try to actually correct it.
|
|
*/
|
|
class ConditionalMoveFalseElement : public FormElement {
|
|
public:
|
|
RegisterAccess dest;
|
|
RegisterAccess old_value;
|
|
RegisterAccess source;
|
|
bool on_zero = false;
|
|
ConditionalMoveFalseElement(RegisterAccess _dest,
|
|
RegisterAccess _old_value,
|
|
RegisterAccess _source,
|
|
bool _on_zero);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
|
|
};
|
|
|
|
std::string fixed_operator_to_string(FixedOperatorKind kind);
|
|
|
|
/*!
|
|
* A GenericOperator is the head of a GenericElement.
|
|
* It is used for the final output.
|
|
*/
|
|
class GenericOperator {
|
|
public:
|
|
enum class Kind { FIXED_OPERATOR, CONDITION_OPERATOR, FUNCTION_EXPR, INVALID };
|
|
|
|
static GenericOperator make_fixed(FixedOperatorKind kind);
|
|
static GenericOperator make_function(Form* value);
|
|
static GenericOperator make_compare(IR2_Condition::Kind kind);
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const;
|
|
goos::Object to_form(const Env& env) const;
|
|
void apply(const std::function<void(FormElement*)>& f);
|
|
void apply_form(const std::function<void(Form*)>& f);
|
|
bool operator==(const GenericOperator& other) const;
|
|
bool operator!=(const GenericOperator& other) const;
|
|
void get_modified_regs(RegSet& regs) const;
|
|
Kind kind() const { return m_kind; }
|
|
FixedOperatorKind fixed_kind() const {
|
|
assert(m_kind == Kind::FIXED_OPERATOR);
|
|
return m_fixed_kind;
|
|
}
|
|
|
|
IR2_Condition::Kind condition_kind() const {
|
|
assert(m_kind == Kind::CONDITION_OPERATOR);
|
|
return m_condition_kind;
|
|
}
|
|
|
|
const Form* func() const {
|
|
assert(m_kind == Kind::FUNCTION_EXPR);
|
|
return m_function;
|
|
}
|
|
|
|
Form* func() {
|
|
assert(m_kind == Kind::FUNCTION_EXPR);
|
|
return m_function;
|
|
}
|
|
|
|
bool is_fixed(FixedOperatorKind kind) const {
|
|
return m_kind == Kind::FIXED_OPERATOR && m_fixed_kind == kind;
|
|
}
|
|
|
|
bool is_fixed() const { return m_kind == Kind::FIXED_OPERATOR; }
|
|
|
|
private:
|
|
friend class GenericElement;
|
|
Kind m_kind = Kind::INVALID;
|
|
IR2_Condition::Kind m_condition_kind = IR2_Condition::Kind::INVALID;
|
|
FixedOperatorKind m_fixed_kind = FixedOperatorKind::INVALID;
|
|
Form* m_function = nullptr;
|
|
};
|
|
|
|
class GenericElement : public FormElement {
|
|
public:
|
|
explicit GenericElement(GenericOperator op);
|
|
GenericElement(GenericOperator op, Form* arg);
|
|
GenericElement(GenericOperator op, Form* arg0, Form* arg1);
|
|
GenericElement(GenericOperator op, std::vector<Form*> forms);
|
|
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void update_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects) override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
|
|
const GenericOperator& op() const { return m_head; }
|
|
GenericOperator& op() { return m_head; }
|
|
const std::vector<Form*>& elts() const { return m_elts; }
|
|
std::vector<Form*>& elts() { return m_elts; }
|
|
|
|
private:
|
|
GenericOperator m_head;
|
|
std::vector<Form*> m_elts;
|
|
};
|
|
|
|
class CastElement : public FormElement {
|
|
public:
|
|
explicit CastElement(TypeSpec type, Form* source, bool numeric = false);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
void update_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects) override;
|
|
const TypeSpec& type() const { return m_type; }
|
|
const Form* source() const { return m_source; }
|
|
void set_type(const TypeSpec& ts) { m_type = ts; }
|
|
Form* source() { return m_source; }
|
|
|
|
private:
|
|
TypeSpec m_type;
|
|
Form* m_source = nullptr;
|
|
bool m_numeric = false; // if true, use the. otherwise the-as
|
|
};
|
|
|
|
class DerefToken {
|
|
public:
|
|
enum class Kind {
|
|
INTEGER_CONSTANT,
|
|
INTEGER_EXPRESSION, // some form which evaluates to an integer index. Not offset, index.
|
|
FIELD_NAME,
|
|
EXPRESSION_PLACEHOLDER,
|
|
INVALID
|
|
};
|
|
static DerefToken make_int_constant(s64 int_constant);
|
|
static DerefToken make_int_expr(Form* expr);
|
|
static DerefToken make_field_name(const std::string& name);
|
|
static DerefToken make_expr_placeholder();
|
|
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const;
|
|
goos::Object to_form(const Env& env) const;
|
|
void apply(const std::function<void(FormElement*)>& f);
|
|
void apply_form(const std::function<void(Form*)>& f);
|
|
void get_modified_regs(RegSet& regs) const;
|
|
|
|
bool is_field_name(const std::string& name) const {
|
|
return m_kind == Kind::FIELD_NAME && m_name == name;
|
|
}
|
|
|
|
bool is_int(int x) const { return m_kind == Kind::INTEGER_CONSTANT && m_int_constant == x; }
|
|
|
|
Kind kind() const { return m_kind; }
|
|
const std::string& field_name() const {
|
|
assert(m_kind == Kind::FIELD_NAME);
|
|
return m_name;
|
|
}
|
|
|
|
s64 int_constant() const { return m_int_constant; }
|
|
|
|
Form* expr() {
|
|
assert(m_kind == Kind::INTEGER_EXPRESSION);
|
|
return m_expr;
|
|
}
|
|
|
|
private:
|
|
Kind m_kind = Kind::INVALID;
|
|
s64 m_int_constant = -1;
|
|
std::string m_name;
|
|
Form* m_expr = nullptr;
|
|
};
|
|
|
|
DerefToken to_token(const FieldReverseLookupOutput::Token& in);
|
|
|
|
class DerefElement : public FormElement {
|
|
public:
|
|
DerefElement(Form* base, bool is_addr_of, DerefToken token);
|
|
DerefElement(Form* base, bool is_addr_of, std::vector<DerefToken> tokens);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void update_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects) override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
|
|
void inline_nested();
|
|
|
|
bool is_addr_of() const { return m_is_addr_of; }
|
|
const Form* base() const { return m_base; }
|
|
Form* base() { return m_base; }
|
|
const std::vector<DerefToken>& tokens() const { return m_tokens; }
|
|
std::vector<DerefToken>& tokens() { return m_tokens; }
|
|
void set_base(Form* new_base);
|
|
void set_addr_of(bool is_addr_of) { m_is_addr_of = is_addr_of; }
|
|
|
|
private:
|
|
Form* m_base = nullptr;
|
|
bool m_is_addr_of = false;
|
|
std::vector<DerefToken> m_tokens;
|
|
};
|
|
|
|
class DynamicMethodAccess : public FormElement {
|
|
public:
|
|
explicit DynamicMethodAccess(RegisterAccess source);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void update_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects) override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
|
|
private:
|
|
RegisterAccess m_source;
|
|
};
|
|
|
|
class ArrayFieldAccess : public FormElement {
|
|
public:
|
|
ArrayFieldAccess(RegisterAccess source,
|
|
const std::vector<DerefToken>& deref_tokens,
|
|
int expected_stride,
|
|
int constant_offset,
|
|
bool flipped);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void update_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects) override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
|
|
void update_with_val(Form* new_val,
|
|
const Env& env,
|
|
FormPool& pool,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects);
|
|
|
|
bool flipped() const { return m_flipped; }
|
|
|
|
private:
|
|
RegisterAccess m_source;
|
|
std::vector<DerefToken> m_deref_tokens;
|
|
int m_expected_stride = -1;
|
|
int m_constant_offset = -1;
|
|
bool m_flipped = false;
|
|
};
|
|
|
|
class GetMethodElement : public FormElement {
|
|
public:
|
|
GetMethodElement(Form* in, std::string name, bool is_object);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
void update_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects) override;
|
|
|
|
private:
|
|
Form* m_in = nullptr;
|
|
std::string m_name;
|
|
bool m_is_object = false;
|
|
};
|
|
|
|
class StringConstantElement : public FormElement {
|
|
public:
|
|
StringConstantElement(const std::string& value);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
void update_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects) override;
|
|
|
|
private:
|
|
std::string m_value;
|
|
};
|
|
|
|
class ConstantTokenElement : public FormElement {
|
|
public:
|
|
explicit ConstantTokenElement(const std::string& value);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
void update_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects) override;
|
|
const std::string& value() const { return m_value; }
|
|
|
|
private:
|
|
std::string m_value;
|
|
};
|
|
|
|
class ConstantFloatElement : public FormElement {
|
|
public:
|
|
explicit ConstantFloatElement(float value);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
void update_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects) override;
|
|
float value() const { return m_value; }
|
|
|
|
private:
|
|
float m_value;
|
|
};
|
|
|
|
class StorePlainDeref : public FormElement {
|
|
public:
|
|
StorePlainDeref(Form* dst,
|
|
SimpleExpression expr,
|
|
int my_idx,
|
|
RegisterAccess base_var,
|
|
std::optional<TypeSpec> dst_cast_type,
|
|
std::optional<TypeSpec> src_cast_type,
|
|
int size);
|
|
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
|
|
int size() const { return m_size; }
|
|
|
|
private:
|
|
Form* m_dst = nullptr;
|
|
SimpleExpression m_expr;
|
|
int m_my_idx = -1;
|
|
RegisterAccess m_base_var;
|
|
std::optional<TypeSpec> m_dst_cast_type, m_src_cast_type;
|
|
int m_size = -1;
|
|
};
|
|
|
|
class StoreArrayAccess : public FormElement {
|
|
public:
|
|
StoreArrayAccess(ArrayFieldAccess* dst,
|
|
SimpleExpression expr,
|
|
int my_idx,
|
|
RegisterAccess array_src,
|
|
std::optional<TypeSpec> src_cast_type);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
|
|
|
|
private:
|
|
ArrayFieldAccess* m_dst = nullptr;
|
|
SimpleExpression m_expr;
|
|
int m_my_idx = -1;
|
|
RegisterAccess m_base_var;
|
|
std::optional<TypeSpec> m_src_cast_type;
|
|
};
|
|
|
|
/*!
|
|
* This marks some static data that will be decompiled in a later pass.
|
|
* This is done at the very end so that we can make sure all static references to lambdas work.
|
|
*/
|
|
class DecompiledDataElement : public FormElement {
|
|
public:
|
|
// DecompiledDataElement(goos::Object description);
|
|
DecompiledDataElement(const DecompilerLabel& label,
|
|
const std::optional<LabelInfo>& label_info = {});
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
void do_decomp(const Env& env, const LinkedObjectFile* file);
|
|
DecompilerLabel label() const { return m_label; }
|
|
|
|
private:
|
|
bool m_decompiled = false;
|
|
goos::Object m_description;
|
|
DecompilerLabel m_label;
|
|
std::optional<LabelInfo> m_label_info;
|
|
};
|
|
|
|
class LetElement : public FormElement {
|
|
public:
|
|
LetElement(Form* body, bool star = false);
|
|
void add_def(RegisterAccess dst, Form* value);
|
|
|
|
void make_let_star();
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
Form* body() { return m_body; }
|
|
void set_body(Form* new_body);
|
|
bool allow_in_if() const override { return false; }
|
|
|
|
struct Entry {
|
|
RegisterAccess dest;
|
|
Form* src = nullptr;
|
|
};
|
|
std::vector<Entry>& entries() { return m_entries; }
|
|
void add_entry(const Entry& e);
|
|
bool is_star() const { return m_star; }
|
|
|
|
private:
|
|
Form* m_body = nullptr;
|
|
std::vector<Entry> m_entries;
|
|
bool m_star = false;
|
|
};
|
|
|
|
class CounterLoopElement : public FormElement {
|
|
public:
|
|
enum class Kind { DOTIMES, COUNTDOWN, INVALID };
|
|
CounterLoopElement(Kind kind,
|
|
RegisterAccess var_init,
|
|
RegisterAccess var_check,
|
|
RegisterAccess var_inc,
|
|
Form* check_value,
|
|
Form* body);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
bool allow_in_if() const override { return false; }
|
|
|
|
private:
|
|
RegisterAccess m_var_init, m_var_check, m_var_inc;
|
|
Form* m_check_value = nullptr;
|
|
Form* m_body = nullptr;
|
|
Kind m_kind = Kind::INVALID;
|
|
};
|
|
|
|
class LambdaDefinitionElement : public FormElement {
|
|
public:
|
|
LambdaDefinitionElement(const goos::Object& def);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
|
|
private:
|
|
goos::Object m_def;
|
|
};
|
|
|
|
class StackStructureDefElement : public FormElement {
|
|
public:
|
|
StackStructureDefElement(const StackStructureEntry& entry);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
void update_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects) override;
|
|
const TypeSpec& type() const { return m_entry.ref_type; }
|
|
const StackStructureEntry& entry() const { return m_entry; }
|
|
|
|
private:
|
|
StackStructureEntry m_entry;
|
|
};
|
|
|
|
class VectorFloatLoadStoreElement : public FormElement {
|
|
public:
|
|
VectorFloatLoadStoreElement(Register vf_reg, Form* location, bool is_load, int my_idx);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
|
|
void collect_vf_regs(RegSet& regs) const;
|
|
bool is_load() const { return m_is_load; }
|
|
Register vf_reg() const { return m_vf_reg; }
|
|
const std::optional<TypeSpec>& addr_type() const { return m_addr_type; }
|
|
Form* location() const { return m_location; }
|
|
int my_idx() const { return m_my_idx; }
|
|
|
|
private:
|
|
Register m_vf_reg;
|
|
Form* m_location = nullptr;
|
|
bool m_is_load = false;
|
|
std::optional<TypeSpec> m_addr_type;
|
|
int m_my_idx = -1;
|
|
};
|
|
|
|
class StackSpillStoreElement : public FormElement {
|
|
public:
|
|
StackSpillStoreElement(SimpleAtom value,
|
|
int size,
|
|
int stack_offset,
|
|
const std::optional<TypeSpec>& cast_type);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
|
|
const std::optional<TypeSpec>& cast_type() const { return m_cast_type; }
|
|
|
|
private:
|
|
SimpleAtom m_value;
|
|
int m_size = -1;
|
|
int m_stack_offset = -1;
|
|
std::optional<TypeSpec> m_cast_type;
|
|
};
|
|
|
|
// the value from a stack load.
|
|
class StackSpillValueElement : public FormElement {
|
|
public:
|
|
StackSpillValueElement(int size, int stack_offset, bool is_signed);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
void update_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects) override;
|
|
|
|
private:
|
|
int m_size = -1;
|
|
int m_stack_offset = -1;
|
|
bool m_is_signed = false;
|
|
};
|
|
|
|
class MethodOfTypeElement : public FormElement {
|
|
public:
|
|
MethodOfTypeElement(RegisterAccess type_reg,
|
|
const TypeSpec& type_at_decompile,
|
|
const MethodInfo& method_info);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void update_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects) override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
|
|
private:
|
|
RegisterAccess m_type_reg;
|
|
TypeSpec m_type_at_decompile;
|
|
MethodInfo m_method_info;
|
|
};
|
|
|
|
class LabelElement : public FormElement {
|
|
public:
|
|
LabelElement(int lid);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
void push_to_stack(const Env& env, FormPool& pool, FormStack& stack) override;
|
|
|
|
private:
|
|
int m_lid = -1;
|
|
};
|
|
|
|
class LabelDerefElement : public FormElement {
|
|
public:
|
|
LabelDerefElement(int lid, int size, LoadVarOp::Kind load_kind, RegisterAccess var);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
void update_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects) override;
|
|
|
|
private:
|
|
int m_lid = -1;
|
|
int m_size = -1;
|
|
LoadVarOp::Kind m_load_kind = LoadVarOp::Kind::INVALID;
|
|
RegisterAccess m_var;
|
|
};
|
|
|
|
class GetSymbolStringPointer : public FormElement {
|
|
public:
|
|
GetSymbolStringPointer(Form* src);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
void update_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects) override;
|
|
Form* src() { return m_src; }
|
|
|
|
private:
|
|
Form* m_src = nullptr;
|
|
};
|
|
|
|
class DefstateElement : public FormElement {
|
|
public:
|
|
struct Entry {
|
|
StateHandler kind;
|
|
Form* val = nullptr;
|
|
bool is_behavior = false;
|
|
};
|
|
DefstateElement(const std::string& process_type,
|
|
const std::string& state_name,
|
|
const std::vector<Entry>& entries,
|
|
bool is_virtual);
|
|
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void update_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects) override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
std::vector<Entry>& entries() { return m_entries; }
|
|
|
|
private:
|
|
std::string m_process_type;
|
|
std::string m_state_name;
|
|
std::vector<Entry> m_entries;
|
|
bool m_is_virtual = false;
|
|
};
|
|
|
|
class DefskelgroupElement : public FormElement {
|
|
public:
|
|
struct StaticInfo {
|
|
std::string art_name;
|
|
math::Vector4f bounds;
|
|
int max_lod;
|
|
float longest_edge;
|
|
s8 tex_level;
|
|
s8 version;
|
|
s8 shadow;
|
|
s8 sort;
|
|
};
|
|
struct Entry {
|
|
Form* mgeo = nullptr;
|
|
Form* lod_dist = nullptr;
|
|
};
|
|
struct Info {
|
|
Form* jgeo;
|
|
Form* janim;
|
|
std::vector<Entry> lods;
|
|
};
|
|
DefskelgroupElement(const std::string& name, const Info& info, const StaticInfo& data);
|
|
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void update_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects) override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
|
|
private:
|
|
std::string m_name;
|
|
StaticInfo m_static_info;
|
|
Info m_info;
|
|
};
|
|
|
|
class DefpartgroupElement : public FormElement {
|
|
public:
|
|
struct StaticInfo {
|
|
u16 duration;
|
|
u16 linger;
|
|
u16 flags;
|
|
std::string name;
|
|
math::Vector4f bounds;
|
|
|
|
struct PartGroupItem {
|
|
u32 part_id;
|
|
float fade;
|
|
float falloff;
|
|
u16 flags;
|
|
u16 period;
|
|
u16 length;
|
|
u16 offset;
|
|
u32 hour_mask;
|
|
u32 binding;
|
|
};
|
|
std::vector<PartGroupItem> elts;
|
|
};
|
|
DefpartgroupElement(const StaticInfo& data, int group_id);
|
|
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void update_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects) override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
|
|
const std::string& name() const { return m_static_info.name; }
|
|
|
|
private:
|
|
StaticInfo m_static_info;
|
|
int m_group_id;
|
|
};
|
|
|
|
class DefpartElement : public FormElement {
|
|
public:
|
|
struct StaticInfo {
|
|
struct PartField {
|
|
u16 field_id;
|
|
u16 flags;
|
|
std::vector<LinkedWord> data;
|
|
goos::Object sound_spec;
|
|
};
|
|
std::vector<PartField> fields;
|
|
};
|
|
DefpartElement(const StaticInfo& data, int id);
|
|
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void update_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects) override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
|
|
private:
|
|
StaticInfo m_static_info;
|
|
int m_id;
|
|
};
|
|
|
|
class ResLumpMacroElement : public FormElement {
|
|
public:
|
|
enum class Kind { DATA, STRUCT, VALUE, INVALID };
|
|
ResLumpMacroElement(Kind kind,
|
|
Form* lump_object,
|
|
Form* property_name,
|
|
Form* default_arg,
|
|
Form* tag_ptr,
|
|
Form* time,
|
|
const TypeSpec& result_type);
|
|
goos::Object to_form_internal(const Env& env) const override;
|
|
void apply(const std::function<void(FormElement*)>& f) override;
|
|
void apply_form(const std::function<void(Form*)>& f) override;
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const override;
|
|
void update_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
std::vector<FormElement*>* result,
|
|
bool allow_side_effects) override;
|
|
void get_modified_regs(RegSet& regs) const override;
|
|
void apply_cast(const TypeSpec& new_type) { m_result_type = new_type; }
|
|
|
|
private:
|
|
Kind m_kind = Kind::INVALID;
|
|
Form* m_lump_object = nullptr;
|
|
Form* m_property_name = nullptr;
|
|
Form* m_default_arg = nullptr; // may be null
|
|
Form* m_tag_ptr = nullptr; // may be null
|
|
Form* m_time = nullptr; // may be null
|
|
TypeSpec m_result_type;
|
|
};
|
|
|
|
/*!
|
|
* A Form is a wrapper around one or more FormElements.
|
|
* This is done for two reasons:
|
|
* - Easier to "inline" begins, prevents stupid nesting of begins.
|
|
* - Easier to manage ownership.
|
|
*/
|
|
class Form {
|
|
public:
|
|
Form() = default;
|
|
Form(FormElement* parent, FormElement* single_child)
|
|
: parent_element(parent), m_elements({single_child}) {
|
|
single_child->parent_form = this;
|
|
}
|
|
|
|
Form(FormElement* parent, const std::vector<FormElement*>& sequence)
|
|
: parent_element(parent), m_elements(sequence) {
|
|
for (auto& x : sequence) {
|
|
x->parent_form = this;
|
|
}
|
|
}
|
|
|
|
FormElement* try_as_single_element() const {
|
|
if (is_single_element()) {
|
|
return m_elements.front();
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
FormElement* try_as_single_active_element() const {
|
|
int active_count = 0;
|
|
FormElement* result = nullptr;
|
|
for (auto& elt : m_elements) {
|
|
if (elt->active()) {
|
|
active_count++;
|
|
result = elt;
|
|
}
|
|
}
|
|
if (active_count == 1) {
|
|
return result;
|
|
} else {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
template <typename T>
|
|
T* try_as_element() const {
|
|
return dynamic_cast<T*>(try_as_single_element());
|
|
}
|
|
|
|
bool is_single_element() const { return m_elements.size() == 1; }
|
|
bool is_single_active_element() const {
|
|
int active_count = 0;
|
|
for (auto& elt : m_elements) {
|
|
if (elt->active()) {
|
|
active_count++;
|
|
}
|
|
}
|
|
return active_count == 1;
|
|
}
|
|
|
|
bool is_reasonable_for_if() const {
|
|
int active_count = 0;
|
|
for (auto& elt : m_elements) {
|
|
if (elt->active()) {
|
|
if (!elt->allow_in_if()) {
|
|
return false;
|
|
}
|
|
active_count++;
|
|
}
|
|
}
|
|
return active_count == 1;
|
|
}
|
|
|
|
FormElement* operator[](int idx) { return m_elements.at(idx); }
|
|
FormElement*& at(int idx) { return m_elements.at(idx); }
|
|
const FormElement* operator[](int idx) const { return m_elements.at(idx); }
|
|
int size() const { return int(m_elements.size()); }
|
|
FormElement* back() const {
|
|
assert(!m_elements.empty());
|
|
return m_elements.back();
|
|
}
|
|
|
|
FormElement** back_ref() {
|
|
assert(!m_elements.empty());
|
|
return &m_elements.back();
|
|
}
|
|
|
|
void pop_back() {
|
|
assert(!m_elements.empty());
|
|
m_elements.pop_back();
|
|
}
|
|
|
|
const std::vector<FormElement*>& elts() const { return m_elements; }
|
|
std::vector<FormElement*>& elts() { return m_elements; }
|
|
void claim_all_children() {
|
|
for (auto elt : elts()) {
|
|
elt->parent_form = this;
|
|
}
|
|
}
|
|
|
|
void push_back(FormElement* elt) {
|
|
elt->parent_form = this;
|
|
m_elements.push_back(elt);
|
|
}
|
|
|
|
void clear() { m_elements.clear(); }
|
|
|
|
goos::Object to_form(const Env& env) const;
|
|
goos::Object to_form_as_condition(const Env& env) const;
|
|
std::string to_string(const Env& env) const;
|
|
void inline_forms(std::vector<goos::Object>& forms, const Env& env) const;
|
|
void apply(const std::function<void(FormElement*)>& f);
|
|
void apply_form(const std::function<void(Form*)>& f);
|
|
void collect_vars(RegAccessSet& vars, bool recursive) const;
|
|
|
|
void update_children_from_stack(const Env& env,
|
|
FormPool& pool,
|
|
FormStack& stack,
|
|
bool allow_side_effects);
|
|
bool has_side_effects();
|
|
void get_modified_regs(RegSet& regs) const;
|
|
|
|
bool is_popped() const { return m_elements.at(0)->is_popped(); }
|
|
|
|
void mark_popped() {
|
|
for (auto x : m_elements) {
|
|
x->mark_popped();
|
|
}
|
|
}
|
|
|
|
FormElement* parent_element = nullptr;
|
|
|
|
private:
|
|
std::vector<FormElement*> m_elements;
|
|
};
|
|
|
|
class CfgVtx;
|
|
|
|
/*!
|
|
* A FormPool is used to allocate forms and form elements.
|
|
* It will clean up everything when it is destroyed.
|
|
* As a result, you don't need to worry about deleting / referencing counting when manipulating
|
|
* a Form graph.
|
|
*/
|
|
class FormPool {
|
|
public:
|
|
template <typename T, class... Args>
|
|
T* alloc_element(Args&&... args) {
|
|
auto elt = new T(std::forward<Args>(args)...);
|
|
m_elements.emplace_back(elt);
|
|
return elt;
|
|
}
|
|
|
|
template <typename T, class... Args>
|
|
Form* alloc_single_element_form(FormElement* parent, Args&&... args) {
|
|
auto elt = new T(std::forward<Args>(args)...);
|
|
m_elements.emplace_back(elt);
|
|
auto form = alloc_single_form(parent, elt);
|
|
return form;
|
|
}
|
|
|
|
template <typename T, class... Args>
|
|
Form* form(Args&&... args) {
|
|
auto elt = new T(std::forward<Args>(args)...);
|
|
m_elements.emplace_back(elt);
|
|
auto form = alloc_single_form(nullptr, elt);
|
|
return form;
|
|
}
|
|
|
|
Form* alloc_single_form(FormElement* parent, FormElement* elt) {
|
|
auto form = new Form(parent, elt);
|
|
m_forms.push_back(form);
|
|
return form;
|
|
}
|
|
|
|
Form* alloc_sequence_form(FormElement* parent, const std::vector<FormElement*> sequence) {
|
|
auto form = new Form(parent, sequence);
|
|
m_forms.push_back(form);
|
|
return form;
|
|
}
|
|
|
|
Form* acquire(std::unique_ptr<Form> form_ptr) {
|
|
Form* form = form_ptr.release();
|
|
m_forms.push_back(form);
|
|
return form;
|
|
}
|
|
|
|
Form* alloc_empty_form() {
|
|
Form* form = new Form;
|
|
m_forms.push_back(form);
|
|
return form;
|
|
}
|
|
|
|
Form* lookup_cached_conversion(const CfgVtx* vtx) const {
|
|
auto it = m_vtx_to_form_cache.find(vtx);
|
|
if (it == m_vtx_to_form_cache.end()) {
|
|
return nullptr;
|
|
}
|
|
return it->second;
|
|
}
|
|
|
|
void cache_conversion(const CfgVtx* vtx, Form* form) {
|
|
assert(m_vtx_to_form_cache.find(vtx) == m_vtx_to_form_cache.end());
|
|
m_vtx_to_form_cache[vtx] = form;
|
|
}
|
|
|
|
~FormPool();
|
|
|
|
private:
|
|
std::vector<Form*> m_forms;
|
|
std::vector<FormElement*> m_elements;
|
|
std::unordered_map<const CfgVtx*, Form*> m_vtx_to_form_cache;
|
|
};
|
|
|
|
std::optional<SimpleAtom> form_element_as_atom(const FormElement* f);
|
|
std::optional<SimpleAtom> form_as_atom(const Form* f);
|
|
FormElement* make_cast_using_existing(Form* form, const TypeSpec& type, FormPool& pool);
|
|
FormElement* make_cast_using_existing(FormElement* elt, const TypeSpec& type, FormPool& pool);
|
|
GenericElement* alloc_generic_token_op(const std::string& name,
|
|
const std::vector<Form*>& args,
|
|
FormPool& pool);
|
|
Form* alloc_var_form(const RegisterAccess& var, FormPool& pool);
|
|
Form* try_cast_simplify(Form* in,
|
|
const TypeSpec& new_type,
|
|
FormPool& pool,
|
|
const Env& env,
|
|
bool tc_pass = false);
|
|
} // namespace decompiler
|