mirror of
https://github.com/RGBCube/serenity
synced 2025-05-22 16:45:08 +00:00
LibJS: Add a way to replace references to registers in Bytecode
This commit is contained in:
Hendiadyoin1
Linus Groh
parent
f5e7fa4d0e
commit
fd6e75fd01
3 changed files with 115 additions and 0 deletions
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@ -109,6 +109,7 @@ public:
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String to_string(Bytecode::Executable const&) const;
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ThrowCompletionOr<void> execute(Bytecode::Interpreter&) const;
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void replace_references(BasicBlock const&, BasicBlock const&);
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void replace_references(Register, Register);
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static void destroy(Instruction&);
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protected:
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@ -757,6 +757,26 @@ void FinishUnwind::replace_references_impl(BasicBlock const& from, BasicBlock co
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m_next_target = Label { to };
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}
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void CopyObjectExcludingProperties::replace_references_impl(Register from, Register to)
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{
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if (m_from_object == from)
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m_from_object = to;
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for (size_t i = 0; i < m_excluded_names_count; ++i) {
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if (m_excluded_names[i] == from)
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m_excluded_names[i] = to;
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}
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}
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void Call::replace_references_impl(Register from, Register to)
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{
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if (m_callee == from)
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m_callee = to;
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if (m_this_value == from)
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m_this_value = to;
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}
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ThrowCompletionOr<void> LeaveEnvironment::execute_impl(Bytecode::Interpreter& interpreter) const
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{
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if (m_mode == EnvironmentMode::Lexical)
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@ -34,6 +34,11 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register from, Register to)
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{
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if (m_src == from)
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m_src = to;
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}
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private:
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Register m_src;
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@ -50,6 +55,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register, Register) { }
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private:
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Value m_value;
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@ -66,6 +72,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register, Register) { }
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private:
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Register m_dst;
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@ -107,6 +114,11 @@ private:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const; \
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String to_string_impl(Bytecode::Executable const&) const; \
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { } \
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void replace_references_impl(Register from, Register to) \
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{ \
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if (m_lhs_reg == from) \
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m_lhs_reg = to; \
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} \
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\
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private: \
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Register m_lhs_reg; \
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@ -133,6 +145,7 @@ JS_ENUMERATE_COMMON_BINARY_OPS(JS_DECLARE_COMMON_BINARY_OP)
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const; \
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String to_string_impl(Bytecode::Executable const&) const; \
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { } \
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void replace_references_impl(Register, Register) { } \
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};
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JS_ENUMERATE_COMMON_UNARY_OPS(JS_DECLARE_COMMON_UNARY_OP)
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@ -149,6 +162,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register, Register) { }
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private:
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StringTableIndex m_string;
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@ -164,6 +178,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register, Register) { }
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};
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class NewRegExp final : public Instruction {
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@ -178,6 +193,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register, Register) { }
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private:
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StringTableIndex m_source_index;
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@ -199,6 +215,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register from, Register to);
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size_t length_impl() const { return sizeof(*this) + sizeof(Register) * m_excluded_names_count; }
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@ -219,6 +236,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register, Register) { }
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private:
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Crypto::SignedBigInteger m_bigint;
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@ -244,6 +262,9 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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// Note: The underlying element range shall never be changed item, by item
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// shifting it may be done in the future
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void replace_references_impl(Register from, Register) { VERIFY(!m_element_count || from.index() < start().index() || from.index() > end().index()); }
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size_t length_impl() const
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{
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@ -268,6 +289,9 @@ public:
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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// Note: This should never do anything, the lhs should always be an array, that is currently being constructed
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void replace_references_impl(Register from, Register) { VERIFY(from != m_lhs); }
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private:
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Register m_lhs;
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bool m_is_spread = false;
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@ -283,6 +307,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register, Register) { }
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};
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class ConcatString final : public Instruction {
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@ -296,6 +321,8 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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// Note: lhs should always be a string in construction, so this should never do anything
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void replace_references_impl(Register from, Register) { VERIFY(from != m_lhs); }
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private:
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Register m_lhs;
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@ -317,6 +344,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register, Register) { }
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private:
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EnvironmentMode m_mode { EnvironmentMode::Lexical };
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@ -332,6 +360,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register, Register) { }
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};
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class CreateVariable final : public Instruction {
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@ -348,6 +377,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register, Register) { }
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private:
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IdentifierTableIndex m_identifier;
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@ -374,6 +404,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register, Register) { }
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private:
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IdentifierTableIndex m_identifier;
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@ -392,6 +423,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register, Register) { }
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private:
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IdentifierTableIndex m_identifier;
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@ -410,6 +442,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register, Register) { }
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private:
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IdentifierTableIndex m_identifier;
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@ -426,6 +459,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register, Register) { }
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private:
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IdentifierTableIndex m_property;
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@ -452,6 +486,11 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register from, Register to)
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{
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if (m_base == from)
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m_base = to;
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}
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private:
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Register m_base;
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@ -470,6 +509,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register, Register) { }
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private:
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IdentifierTableIndex m_property;
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@ -486,6 +526,11 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register from, Register to)
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{
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if (m_base == from)
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m_base = to;
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}
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private:
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Register m_base;
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@ -504,6 +549,11 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register from, Register to)
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{
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if (m_base == from)
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m_base = to;
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}
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private:
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Register m_base;
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@ -522,6 +572,11 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register from, Register to)
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{
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if (m_base == from)
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m_base = to;
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}
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private:
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Register m_base;
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@ -554,6 +609,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&);
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void replace_references_impl(Register, Register) { }
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auto& true_target() const { return m_true_target; }
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auto& false_target() const { return m_false_target; }
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@ -616,6 +672,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register, Register);
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Completion throw_type_error_for_callee(Bytecode::Interpreter&, StringView callee_type) const;
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@ -638,6 +695,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register, Register) { }
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private:
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bool m_is_synthetic;
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@ -654,6 +712,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register, Register) { }
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private:
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ClassExpression const& m_class_expression;
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@ -670,6 +729,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register, Register) { }
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private:
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FunctionNode const& m_function_node;
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@ -687,6 +747,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register, Register) { }
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};
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class Increment final : public Instruction {
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@ -699,6 +760,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register, Register) { }
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};
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class Decrement final : public Instruction {
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@ -711,6 +773,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register, Register) { }
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};
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class Throw final : public Instruction {
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@ -725,6 +788,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register, Register) { }
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};
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class EnterUnwindContext final : public Instruction {
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@ -742,6 +806,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&);
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void replace_references_impl(Register, Register) { }
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auto& entry_point() const { return m_entry_point; }
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auto& handler_target() const { return m_handler_target; }
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@ -764,6 +829,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register, Register) { }
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private:
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EnvironmentMode m_mode { EnvironmentMode::Lexical };
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@ -779,6 +845,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
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void replace_references_impl(Register, Register) { }
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};
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class FinishUnwind final : public Instruction {
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@ -794,6 +861,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&);
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void replace_references_impl(Register, Register) { }
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Label next_target() const { return m_next_target; }
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@ -814,6 +882,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
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void replace_references_impl(BasicBlock const&, BasicBlock const&);
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void replace_references_impl(Register, Register) { }
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auto& resume_target() const { return m_resume_target; }
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@ -839,6 +908,7 @@ public:
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ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
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String to_string_impl(Bytecode::Executable const&) const;
|
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void replace_references_impl(BasicBlock const&, BasicBlock const&);
|
||||
void replace_references_impl(Register, Register) { }
|
||||
|
||||
auto& continuation() const { return m_continuation_label; }
|
||||
|
||||
|
|
@ -857,6 +927,7 @@ public:
|
|||
ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
|
||||
String to_string_impl(Bytecode::Executable const&) const;
|
||||
void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
|
||||
void replace_references_impl(Register, Register) { }
|
||||
|
||||
private:
|
||||
HashMap<u32, Variable> m_variables;
|
||||
|
|
@ -872,6 +943,7 @@ public:
|
|||
ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
|
||||
String to_string_impl(Bytecode::Executable const&) const;
|
||||
void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
|
||||
void replace_references_impl(Register, Register) { }
|
||||
};
|
||||
|
||||
class GetObjectPropertyIterator final : public Instruction {
|
||||
|
|
@ -884,6 +956,7 @@ public:
|
|||
ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
|
||||
String to_string_impl(Bytecode::Executable const&) const;
|
||||
void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
|
||||
void replace_references_impl(Register, Register) { }
|
||||
};
|
||||
|
||||
class IteratorNext final : public Instruction {
|
||||
|
|
@ -896,6 +969,7 @@ public:
|
|||
ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
|
||||
String to_string_impl(Bytecode::Executable const&) const;
|
||||
void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
|
||||
void replace_references_impl(Register, Register) { }
|
||||
};
|
||||
|
||||
class IteratorResultDone final : public Instruction {
|
||||
|
|
@ -908,6 +982,7 @@ public:
|
|||
ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
|
||||
String to_string_impl(Bytecode::Executable const&) const;
|
||||
void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
|
||||
void replace_references_impl(Register, Register) { }
|
||||
};
|
||||
|
||||
class IteratorResultValue final : public Instruction {
|
||||
|
|
@ -920,6 +995,7 @@ public:
|
|||
ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
|
||||
String to_string_impl(Bytecode::Executable const&) const;
|
||||
void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
|
||||
void replace_references_impl(Register, Register) { }
|
||||
};
|
||||
|
||||
class ResolveThisBinding final : public Instruction {
|
||||
|
|
@ -932,6 +1008,7 @@ public:
|
|||
ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
|
||||
String to_string_impl(Bytecode::Executable const&) const;
|
||||
void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
|
||||
void replace_references_impl(Register, Register) { }
|
||||
};
|
||||
|
||||
class GetNewTarget final : public Instruction {
|
||||
|
|
@ -944,6 +1021,7 @@ public:
|
|||
ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
|
||||
String to_string_impl(Bytecode::Executable const&) const;
|
||||
void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
|
||||
void replace_references_impl(Register, Register) { }
|
||||
};
|
||||
|
||||
class TypeofVariable final : public Instruction {
|
||||
|
|
@ -957,6 +1035,7 @@ public:
|
|||
ThrowCompletionOr<void> execute_impl(Bytecode::Interpreter&) const;
|
||||
String to_string_impl(Bytecode::Executable const&) const;
|
||||
void replace_references_impl(BasicBlock const&, BasicBlock const&) { }
|
||||
void replace_references_impl(Register, Register) { }
|
||||
|
||||
private:
|
||||
IdentifierTableIndex m_identifier;
|
||||
|
|
@ -996,6 +1075,21 @@ ALWAYS_INLINE void Instruction::replace_references(BasicBlock const& from, Basic
|
|||
#undef __BYTECODE_OP
|
||||
}
|
||||
|
||||
ALWAYS_INLINE void Instruction::replace_references(Register from, Register to)
|
||||
{
|
||||
#define __BYTECODE_OP(op) \
|
||||
case Instruction::Type::op: \
|
||||
return static_cast<Bytecode::Op::op&>(*this).replace_references_impl(from, to);
|
||||
|
||||
switch (type()) {
|
||||
ENUMERATE_BYTECODE_OPS(__BYTECODE_OP)
|
||||
default:
|
||||
VERIFY_NOT_REACHED();
|
||||
}
|
||||
|
||||
#undef __BYTECODE_OP
|
||||
}
|
||||
|
||||
ALWAYS_INLINE size_t Instruction::length() const
|
||||
{
|
||||
if (type() == Type::NewArray)
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue