LibWasm: Avoid parsing if/block/loop instructions recursively
This commit is contained in:
Ali Mohammad Pur
Ali Mohammad Pur
parent
f6830eaf73
commit
0d1471e72f
Notes:
sideshowbarker
2024-07-17 09:49:33 +09:00
Author: https://github.com/alimpfard Commit: https://github.com/SerenityOS/serenity/commit/0d1471e72f Pull-request: https://github.com/SerenityOS/serenity/pull/16133 Reviewed-by: https://github.com/ADKaster ✅
1 changed files with 462 additions and 426 deletions
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@ -277,458 +277,494 @@ ParseResult<BlockType> BlockType::parse(InputStream& stream)
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ParseResult<Vector<Instruction>> Instruction::parse(InputStream& stream, InstructionPointer& ip)
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{
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ScopeLogger<WASM_BINPARSER_DEBUG> logger("Instruction"sv);
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u8 byte;
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stream >> byte;
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if (stream.has_any_error())
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return with_eof_check(stream, ParseError::ExpectedKindTag);
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OpCode opcode { byte };
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++ip;
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struct NestedInstructionState {
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Vector<Instruction> prior_instructions;
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OpCode opcode;
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BlockType block_type;
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InstructionPointer end_ip;
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Optional<InstructionPointer> else_ip;
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};
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Vector<NestedInstructionState, 4> nested_instructions;
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Vector<Instruction> resulting_instructions;
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switch (opcode.value()) {
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case Instructions::block.value():
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case Instructions::loop.value():
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case Instructions::if_.value(): {
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auto block_type = BlockType::parse(stream);
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if (block_type.is_error())
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return block_type.error();
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Vector<Instruction> instructions;
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InstructionPointer end_ip, else_ip;
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{
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auto result = parse_until_any_of<Instruction, 0x0b, 0x05>(stream, ip);
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if (result.is_error())
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return result.error();
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if (result.value().terminator == 0x0b) {
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// block/loop/if without else
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result.value().values.append(Instruction { Instructions::structured_end });
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// Transform op(..., instr*) -> op(...) instr* op(end(ip))
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result.value().values.prepend(Instruction { opcode, StructuredInstructionArgs { BlockType { block_type.release_value() }, ip.value(), {} } });
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++ip;
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return result.release_value().values;
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}
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// Transform op(..., instr*, instr*) -> op(...) instr* op(else(ip) instr* op(end(ip))
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VERIFY(result.value().terminator == 0x05);
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instructions.extend(result.release_value().values);
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instructions.append(Instruction { Instructions::structured_else });
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++ip;
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else_ip = ip.value();
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}
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// if with else
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{
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auto result = parse_until_any_of<Instruction, 0x0b>(stream, ip);
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if (result.is_error())
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return result.error();
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instructions.extend(result.release_value().values);
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instructions.append(Instruction { Instructions::structured_end });
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++ip;
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end_ip = ip.value();
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}
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instructions.prepend(Instruction { opcode, StructuredInstructionArgs { BlockType { block_type.release_value() }, end_ip, else_ip } });
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return instructions;
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}
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case Instructions::br.value():
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case Instructions::br_if.value(): {
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// branches with a single label immediate
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auto index = GenericIndexParser<LabelIndex>::parse(stream);
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if (index.is_error())
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return index.error();
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return Vector { Instruction { opcode, index.release_value() } };
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}
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case Instructions::br_table.value(): {
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// br_table label* label
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auto labels = parse_vector<GenericIndexParser<LabelIndex>>(stream);
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if (labels.is_error())
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return labels.error();
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auto default_label = GenericIndexParser<LabelIndex>::parse(stream);
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if (default_label.is_error())
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return default_label.error();
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return Vector { Instruction { opcode, TableBranchArgs { labels.release_value(), default_label.release_value() } } };
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}
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case Instructions::call.value(): {
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// call function
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auto function_index = GenericIndexParser<FunctionIndex>::parse(stream);
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if (function_index.is_error())
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return function_index.error();
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return Vector { Instruction { opcode, function_index.release_value() } };
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}
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case Instructions::call_indirect.value(): {
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// call_indirect type table
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auto type_index = GenericIndexParser<TypeIndex>::parse(stream);
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if (type_index.is_error())
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return type_index.error();
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auto table_index = GenericIndexParser<TableIndex>::parse(stream);
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if (table_index.is_error())
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return table_index.error();
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return Vector { Instruction { opcode, IndirectCallArgs { type_index.release_value(), table_index.release_value() } } };
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}
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case Instructions::i32_load.value():
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case Instructions::i64_load.value():
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case Instructions::f32_load.value():
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case Instructions::f64_load.value():
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case Instructions::i32_load8_s.value():
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case Instructions::i32_load8_u.value():
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case Instructions::i32_load16_s.value():
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case Instructions::i32_load16_u.value():
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case Instructions::i64_load8_s.value():
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case Instructions::i64_load8_u.value():
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case Instructions::i64_load16_s.value():
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case Instructions::i64_load16_u.value():
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case Instructions::i64_load32_s.value():
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case Instructions::i64_load32_u.value():
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case Instructions::i32_store.value():
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case Instructions::i64_store.value():
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case Instructions::f32_store.value():
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case Instructions::f64_store.value():
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case Instructions::i32_store8.value():
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case Instructions::i32_store16.value():
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case Instructions::i64_store8.value():
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case Instructions::i64_store16.value():
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case Instructions::i64_store32.value(): {
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// op (align offset)
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size_t align, offset;
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if (!LEB128::read_unsigned(stream, align))
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return with_eof_check(stream, ParseError::InvalidInput);
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if (!LEB128::read_unsigned(stream, offset))
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return with_eof_check(stream, ParseError::InvalidInput);
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return Vector { Instruction { opcode, MemoryArgument { static_cast<u32>(align), static_cast<u32>(offset) } } };
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}
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case Instructions::local_get.value():
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case Instructions::local_set.value():
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case Instructions::local_tee.value(): {
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auto index = GenericIndexParser<LocalIndex>::parse(stream);
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if (index.is_error())
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return index.error();
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return Vector { Instruction { opcode, index.release_value() } };
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}
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case Instructions::global_get.value():
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case Instructions::global_set.value(): {
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auto index = GenericIndexParser<GlobalIndex>::parse(stream);
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if (index.is_error())
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return index.error();
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return Vector { Instruction { opcode, index.release_value() } };
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}
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case Instructions::memory_size.value():
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case Instructions::memory_grow.value(): {
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// op 0x0
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// The zero is currently unused.
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u8 unused;
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stream >> unused;
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do {
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ScopeLogger<WASM_BINPARSER_DEBUG> logger("Instruction"sv);
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u8 byte;
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stream >> byte;
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if (stream.has_any_error())
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return with_eof_check(stream, ParseError::ExpectedKindTag);
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if (unused != 0x00) {
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dbgln("Invalid tag in memory_grow {}", unused);
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return with_eof_check(stream, ParseError::InvalidTag);
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if (!nested_instructions.is_empty()) {
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auto& nested_structure = nested_instructions.last();
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if (byte == 0x0b) {
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// block/loop/if end
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nested_structure.end_ip = ip + (nested_structure.else_ip.has_value() ? 1 : 0);
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++ip;
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// Transform op(..., instr*) -> op(...) instr* op(end(ip))
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auto instructions = move(nested_structure.prior_instructions);
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instructions.ensure_capacity(instructions.size() + 2 + resulting_instructions.size());
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instructions.append(Instruction { nested_structure.opcode, StructuredInstructionArgs { nested_structure.block_type, nested_structure.end_ip, nested_structure.else_ip } });
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instructions.extend(move(resulting_instructions));
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instructions.append(Instruction { Instructions::structured_end });
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resulting_instructions = move(instructions);
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nested_instructions.take_last();
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continue;
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}
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if (byte == 0x05) {
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// if...else
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// Transform op(..., instr*, instr*) -> op(...) instr* op(else(ip) instr* op(end(ip))
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resulting_instructions.append(Instruction { Instructions::structured_else });
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++ip;
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nested_structure.else_ip = ip.value();
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continue;
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}
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}
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return Vector { Instruction { opcode } };
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}
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case Instructions::i32_const.value(): {
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i32 value;
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if (!LEB128::read_signed(stream, value))
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return with_eof_check(stream, ParseError::ExpectedSignedImmediate);
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OpCode opcode { byte };
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++ip;
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return Vector { Instruction { opcode, value } };
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}
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case Instructions::i64_const.value(): {
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// op literal
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i64 value;
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if (!LEB128::read_signed(stream, value))
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return with_eof_check(stream, ParseError::ExpectedSignedImmediate);
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switch (opcode.value()) {
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case Instructions::block.value():
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case Instructions::loop.value():
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case Instructions::if_.value(): {
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auto block_type = BlockType::parse(stream);
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if (block_type.is_error())
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return block_type.error();
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return Vector { Instruction { opcode, value } };
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}
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case Instructions::f32_const.value(): {
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// op literal
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LittleEndian<u32> value;
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stream >> value;
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if (stream.has_any_error())
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return with_eof_check(stream, ParseError::ExpectedFloatingImmediate);
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auto floating = bit_cast<float>(static_cast<u32>(value));
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return Vector { Instruction { opcode, floating } };
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}
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case Instructions::f64_const.value(): {
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// op literal
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LittleEndian<u64> value;
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stream >> value;
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if (stream.has_any_error())
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return with_eof_check(stream, ParseError::ExpectedFloatingImmediate);
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auto floating = bit_cast<double>(static_cast<u64>(value));
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return Vector { Instruction { opcode, floating } };
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}
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case Instructions::table_get.value():
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case Instructions::table_set.value(): {
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auto index = GenericIndexParser<TableIndex>::parse(stream);
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if (index.is_error())
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return index.error();
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return Vector { Instruction { opcode, index.release_value() } };
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}
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case Instructions::select_typed.value(): {
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auto types = parse_vector<ValueType>(stream);
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if (types.is_error())
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return types.error();
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return Vector { Instruction { opcode, types.release_value() } };
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}
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case Instructions::ref_null.value(): {
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auto type = ValueType::parse(stream);
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if (type.is_error())
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return type.error();
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if (!type.value().is_reference())
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return ParseError::InvalidType;
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return Vector { Instruction { opcode, type.release_value() } };
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}
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case Instructions::ref_func.value(): {
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auto index = GenericIndexParser<FunctionIndex>::parse(stream);
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if (index.is_error())
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return index.error();
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return Vector { Instruction { opcode, index.release_value() } };
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}
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case Instructions::ref_is_null.value():
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case Instructions::unreachable.value():
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case Instructions::nop.value():
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case Instructions::return_.value():
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case Instructions::drop.value():
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case Instructions::select.value():
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case Instructions::i32_eqz.value():
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case Instructions::i32_eq.value():
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case Instructions::i32_ne.value():
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case Instructions::i32_lts.value():
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case Instructions::i32_ltu.value():
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case Instructions::i32_gts.value():
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case Instructions::i32_gtu.value():
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case Instructions::i32_les.value():
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case Instructions::i32_leu.value():
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case Instructions::i32_ges.value():
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case Instructions::i32_geu.value():
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case Instructions::i64_eqz.value():
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case Instructions::i64_eq.value():
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case Instructions::i64_ne.value():
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case Instructions::i64_lts.value():
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case Instructions::i64_ltu.value():
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case Instructions::i64_gts.value():
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case Instructions::i64_gtu.value():
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case Instructions::i64_les.value():
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case Instructions::i64_leu.value():
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case Instructions::i64_ges.value():
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case Instructions::i64_geu.value():
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case Instructions::f32_eq.value():
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case Instructions::f32_ne.value():
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case Instructions::f32_lt.value():
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case Instructions::f32_gt.value():
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case Instructions::f32_le.value():
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case Instructions::f32_ge.value():
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case Instructions::f64_eq.value():
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case Instructions::f64_ne.value():
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case Instructions::f64_lt.value():
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case Instructions::f64_gt.value():
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case Instructions::f64_le.value():
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case Instructions::f64_ge.value():
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case Instructions::i32_clz.value():
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case Instructions::i32_ctz.value():
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case Instructions::i32_popcnt.value():
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case Instructions::i32_add.value():
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case Instructions::i32_sub.value():
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case Instructions::i32_mul.value():
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case Instructions::i32_divs.value():
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case Instructions::i32_divu.value():
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case Instructions::i32_rems.value():
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case Instructions::i32_remu.value():
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case Instructions::i32_and.value():
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case Instructions::i32_or.value():
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case Instructions::i32_xor.value():
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case Instructions::i32_shl.value():
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case Instructions::i32_shrs.value():
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case Instructions::i32_shru.value():
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case Instructions::i32_rotl.value():
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case Instructions::i32_rotr.value():
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case Instructions::i64_clz.value():
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case Instructions::i64_ctz.value():
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case Instructions::i64_popcnt.value():
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case Instructions::i64_add.value():
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case Instructions::i64_sub.value():
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case Instructions::i64_mul.value():
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case Instructions::i64_divs.value():
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case Instructions::i64_divu.value():
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case Instructions::i64_rems.value():
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case Instructions::i64_remu.value():
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case Instructions::i64_and.value():
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case Instructions::i64_or.value():
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case Instructions::i64_xor.value():
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case Instructions::i64_shl.value():
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case Instructions::i64_shrs.value():
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case Instructions::i64_shru.value():
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case Instructions::i64_rotl.value():
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case Instructions::i64_rotr.value():
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case Instructions::f32_abs.value():
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case Instructions::f32_neg.value():
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case Instructions::f32_ceil.value():
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case Instructions::f32_floor.value():
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case Instructions::f32_trunc.value():
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case Instructions::f32_nearest.value():
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case Instructions::f32_sqrt.value():
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case Instructions::f32_add.value():
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case Instructions::f32_sub.value():
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case Instructions::f32_mul.value():
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case Instructions::f32_div.value():
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case Instructions::f32_min.value():
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case Instructions::f32_max.value():
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case Instructions::f32_copysign.value():
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case Instructions::f64_abs.value():
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case Instructions::f64_neg.value():
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case Instructions::f64_ceil.value():
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case Instructions::f64_floor.value():
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case Instructions::f64_trunc.value():
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case Instructions::f64_nearest.value():
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case Instructions::f64_sqrt.value():
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case Instructions::f64_add.value():
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case Instructions::f64_sub.value():
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case Instructions::f64_mul.value():
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case Instructions::f64_div.value():
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case Instructions::f64_min.value():
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case Instructions::f64_max.value():
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case Instructions::f64_copysign.value():
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case Instructions::i32_wrap_i64.value():
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case Instructions::i32_trunc_sf32.value():
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case Instructions::i32_trunc_uf32.value():
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case Instructions::i32_trunc_sf64.value():
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case Instructions::i32_trunc_uf64.value():
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case Instructions::i64_extend_si32.value():
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case Instructions::i64_extend_ui32.value():
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case Instructions::i64_trunc_sf32.value():
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case Instructions::i64_trunc_uf32.value():
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case Instructions::i64_trunc_sf64.value():
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case Instructions::i64_trunc_uf64.value():
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case Instructions::f32_convert_si32.value():
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case Instructions::f32_convert_ui32.value():
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case Instructions::f32_convert_si64.value():
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case Instructions::f32_convert_ui64.value():
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case Instructions::f32_demote_f64.value():
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case Instructions::f64_convert_si32.value():
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case Instructions::f64_convert_ui32.value():
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case Instructions::f64_convert_si64.value():
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case Instructions::f64_convert_ui64.value():
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case Instructions::f64_promote_f32.value():
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case Instructions::i32_reinterpret_f32.value():
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case Instructions::i64_reinterpret_f64.value():
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case Instructions::f32_reinterpret_i32.value():
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case Instructions::f64_reinterpret_i64.value():
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case Instructions::i32_extend8_s.value():
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case Instructions::i32_extend16_s.value():
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case Instructions::i64_extend8_s.value():
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case Instructions::i64_extend16_s.value():
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case Instructions::i64_extend32_s.value():
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return Vector { Instruction { opcode } };
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case 0xfc: {
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// These are multibyte instructions.
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u32 selector;
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if (!LEB128::read_unsigned(stream, selector))
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return with_eof_check(stream, ParseError::InvalidInput);
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switch (selector) {
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case Instructions::i32_trunc_sat_f32_s_second:
|
||||
case Instructions::i32_trunc_sat_f32_u_second:
|
||||
case Instructions::i32_trunc_sat_f64_s_second:
|
||||
case Instructions::i32_trunc_sat_f64_u_second:
|
||||
case Instructions::i64_trunc_sat_f32_s_second:
|
||||
case Instructions::i64_trunc_sat_f32_u_second:
|
||||
case Instructions::i64_trunc_sat_f64_s_second:
|
||||
case Instructions::i64_trunc_sat_f64_u_second:
|
||||
return Vector { Instruction { OpCode { 0xfc00 | selector } } };
|
||||
case Instructions::memory_init_second: {
|
||||
auto index = GenericIndexParser<DataIndex>::parse(stream);
|
||||
nested_instructions.append({ move(resulting_instructions), opcode, block_type.release_value(), {}, {} });
|
||||
resulting_instructions = {};
|
||||
break;
|
||||
}
|
||||
case Instructions::br.value():
|
||||
case Instructions::br_if.value(): {
|
||||
// branches with a single label immediate
|
||||
auto index = GenericIndexParser<LabelIndex>::parse(stream);
|
||||
if (index.is_error())
|
||||
return index.error();
|
||||
|
||||
resulting_instructions.append(Instruction { opcode, index.release_value() });
|
||||
break;
|
||||
}
|
||||
case Instructions::br_table.value(): {
|
||||
// br_table label* label
|
||||
auto labels = parse_vector<GenericIndexParser<LabelIndex>>(stream);
|
||||
if (labels.is_error())
|
||||
return labels.error();
|
||||
|
||||
auto default_label = GenericIndexParser<LabelIndex>::parse(stream);
|
||||
if (default_label.is_error())
|
||||
return default_label.error();
|
||||
|
||||
resulting_instructions.append(Instruction { opcode, TableBranchArgs { labels.release_value(), default_label.release_value() } });
|
||||
break;
|
||||
}
|
||||
case Instructions::call.value(): {
|
||||
// call function
|
||||
auto function_index = GenericIndexParser<FunctionIndex>::parse(stream);
|
||||
if (function_index.is_error())
|
||||
return function_index.error();
|
||||
|
||||
resulting_instructions.append(Instruction { opcode, function_index.release_value() });
|
||||
break;
|
||||
}
|
||||
case Instructions::call_indirect.value(): {
|
||||
// call_indirect type table
|
||||
auto type_index = GenericIndexParser<TypeIndex>::parse(stream);
|
||||
if (type_index.is_error())
|
||||
return type_index.error();
|
||||
|
||||
auto table_index = GenericIndexParser<TableIndex>::parse(stream);
|
||||
if (table_index.is_error())
|
||||
return table_index.error();
|
||||
|
||||
resulting_instructions.append(Instruction { opcode, IndirectCallArgs { type_index.release_value(), table_index.release_value() } });
|
||||
break;
|
||||
}
|
||||
case Instructions::i32_load.value():
|
||||
case Instructions::i64_load.value():
|
||||
case Instructions::f32_load.value():
|
||||
case Instructions::f64_load.value():
|
||||
case Instructions::i32_load8_s.value():
|
||||
case Instructions::i32_load8_u.value():
|
||||
case Instructions::i32_load16_s.value():
|
||||
case Instructions::i32_load16_u.value():
|
||||
case Instructions::i64_load8_s.value():
|
||||
case Instructions::i64_load8_u.value():
|
||||
case Instructions::i64_load16_s.value():
|
||||
case Instructions::i64_load16_u.value():
|
||||
case Instructions::i64_load32_s.value():
|
||||
case Instructions::i64_load32_u.value():
|
||||
case Instructions::i32_store.value():
|
||||
case Instructions::i64_store.value():
|
||||
case Instructions::f32_store.value():
|
||||
case Instructions::f64_store.value():
|
||||
case Instructions::i32_store8.value():
|
||||
case Instructions::i32_store16.value():
|
||||
case Instructions::i64_store8.value():
|
||||
case Instructions::i64_store16.value():
|
||||
case Instructions::i64_store32.value(): {
|
||||
// op (align offset)
|
||||
size_t align;
|
||||
if (!LEB128::read_unsigned(stream, align))
|
||||
return with_eof_check(stream, ParseError::InvalidInput);
|
||||
|
||||
size_t offset;
|
||||
if (!LEB128::read_unsigned(stream, offset))
|
||||
return with_eof_check(stream, ParseError::InvalidInput);
|
||||
|
||||
resulting_instructions.append(Instruction { opcode, MemoryArgument { static_cast<u32>(align), static_cast<u32>(offset) } });
|
||||
break;
|
||||
}
|
||||
case Instructions::local_get.value():
|
||||
case Instructions::local_set.value():
|
||||
case Instructions::local_tee.value(): {
|
||||
auto index = GenericIndexParser<LocalIndex>::parse(stream);
|
||||
if (index.is_error())
|
||||
return index.error();
|
||||
|
||||
resulting_instructions.append(Instruction { opcode, index.release_value() });
|
||||
break;
|
||||
}
|
||||
case Instructions::global_get.value():
|
||||
case Instructions::global_set.value(): {
|
||||
auto index = GenericIndexParser<GlobalIndex>::parse(stream);
|
||||
if (index.is_error())
|
||||
return index.error();
|
||||
|
||||
resulting_instructions.append(Instruction { opcode, index.release_value() });
|
||||
break;
|
||||
}
|
||||
case Instructions::memory_size.value():
|
||||
case Instructions::memory_grow.value(): {
|
||||
// op 0x0
|
||||
// The zero is currently unused.
|
||||
u8 unused;
|
||||
stream >> unused;
|
||||
if (stream.has_any_error())
|
||||
return with_eof_check(stream, ParseError::InvalidInput);
|
||||
if (unused != 0x00)
|
||||
return ParseError::InvalidImmediate;
|
||||
return Vector { Instruction { OpCode { 0xfc00 | selector }, index.release_value() } };
|
||||
return with_eof_check(stream, ParseError::ExpectedKindTag);
|
||||
if (unused != 0x00) {
|
||||
dbgln("Invalid tag in memory_grow {}", unused);
|
||||
return with_eof_check(stream, ParseError::InvalidTag);
|
||||
}
|
||||
|
||||
resulting_instructions.append(Instruction { opcode });
|
||||
break;
|
||||
}
|
||||
case Instructions::data_drop_second: {
|
||||
auto index = GenericIndexParser<DataIndex>::parse(stream);
|
||||
case Instructions::i32_const.value(): {
|
||||
i32 value;
|
||||
if (!LEB128::read_signed(stream, value))
|
||||
return with_eof_check(stream, ParseError::ExpectedSignedImmediate);
|
||||
|
||||
resulting_instructions.append(Instruction { opcode, value });
|
||||
break;
|
||||
}
|
||||
case Instructions::i64_const.value(): {
|
||||
// op literal
|
||||
i64 value;
|
||||
if (!LEB128::read_signed(stream, value))
|
||||
return with_eof_check(stream, ParseError::ExpectedSignedImmediate);
|
||||
|
||||
resulting_instructions.append(Instruction { opcode, value });
|
||||
break;
|
||||
}
|
||||
case Instructions::f32_const.value(): {
|
||||
// op literal
|
||||
LittleEndian<u32> value;
|
||||
stream >> value;
|
||||
if (stream.has_any_error())
|
||||
return with_eof_check(stream, ParseError::ExpectedFloatingImmediate);
|
||||
|
||||
auto floating = bit_cast<float>(static_cast<u32>(value));
|
||||
resulting_instructions.append(Instruction { opcode, floating });
|
||||
break;
|
||||
}
|
||||
case Instructions::f64_const.value(): {
|
||||
// op literal
|
||||
LittleEndian<u64> value;
|
||||
stream >> value;
|
||||
if (stream.has_any_error())
|
||||
return with_eof_check(stream, ParseError::ExpectedFloatingImmediate);
|
||||
|
||||
auto floating = bit_cast<double>(static_cast<u64>(value));
|
||||
resulting_instructions.append(Instruction { opcode, floating });
|
||||
break;
|
||||
}
|
||||
case Instructions::table_get.value():
|
||||
case Instructions::table_set.value(): {
|
||||
auto index = GenericIndexParser<TableIndex>::parse(stream);
|
||||
if (index.is_error())
|
||||
return index.error();
|
||||
return Vector { Instruction { OpCode { 0xfc00 | selector }, index.release_value() } };
|
||||
|
||||
resulting_instructions.append(Instruction { opcode, index.release_value() });
|
||||
break;
|
||||
}
|
||||
case Instructions::memory_copy_second: {
|
||||
for (size_t i = 0; i < 2; ++i) {
|
||||
case Instructions::select_typed.value(): {
|
||||
auto types = parse_vector<ValueType>(stream);
|
||||
if (types.is_error())
|
||||
return types.error();
|
||||
|
||||
resulting_instructions.append(Instruction { opcode, types.release_value() });
|
||||
break;
|
||||
}
|
||||
case Instructions::ref_null.value(): {
|
||||
auto type = ValueType::parse(stream);
|
||||
if (type.is_error())
|
||||
return type.error();
|
||||
if (!type.value().is_reference())
|
||||
return ParseError::InvalidType;
|
||||
|
||||
resulting_instructions.append(Instruction { opcode, type.release_value() });
|
||||
break;
|
||||
}
|
||||
case Instructions::ref_func.value(): {
|
||||
auto index = GenericIndexParser<FunctionIndex>::parse(stream);
|
||||
if (index.is_error())
|
||||
return index.error();
|
||||
|
||||
resulting_instructions.append(Instruction { opcode, index.release_value() });
|
||||
break;
|
||||
}
|
||||
case Instructions::ref_is_null.value():
|
||||
case Instructions::unreachable.value():
|
||||
case Instructions::nop.value():
|
||||
case Instructions::return_.value():
|
||||
case Instructions::drop.value():
|
||||
case Instructions::select.value():
|
||||
case Instructions::i32_eqz.value():
|
||||
case Instructions::i32_eq.value():
|
||||
case Instructions::i32_ne.value():
|
||||
case Instructions::i32_lts.value():
|
||||
case Instructions::i32_ltu.value():
|
||||
case Instructions::i32_gts.value():
|
||||
case Instructions::i32_gtu.value():
|
||||
case Instructions::i32_les.value():
|
||||
case Instructions::i32_leu.value():
|
||||
case Instructions::i32_ges.value():
|
||||
case Instructions::i32_geu.value():
|
||||
case Instructions::i64_eqz.value():
|
||||
case Instructions::i64_eq.value():
|
||||
case Instructions::i64_ne.value():
|
||||
case Instructions::i64_lts.value():
|
||||
case Instructions::i64_ltu.value():
|
||||
case Instructions::i64_gts.value():
|
||||
case Instructions::i64_gtu.value():
|
||||
case Instructions::i64_les.value():
|
||||
case Instructions::i64_leu.value():
|
||||
case Instructions::i64_ges.value():
|
||||
case Instructions::i64_geu.value():
|
||||
case Instructions::f32_eq.value():
|
||||
case Instructions::f32_ne.value():
|
||||
case Instructions::f32_lt.value():
|
||||
case Instructions::f32_gt.value():
|
||||
case Instructions::f32_le.value():
|
||||
case Instructions::f32_ge.value():
|
||||
case Instructions::f64_eq.value():
|
||||
case Instructions::f64_ne.value():
|
||||
case Instructions::f64_lt.value():
|
||||
case Instructions::f64_gt.value():
|
||||
case Instructions::f64_le.value():
|
||||
case Instructions::f64_ge.value():
|
||||
case Instructions::i32_clz.value():
|
||||
case Instructions::i32_ctz.value():
|
||||
case Instructions::i32_popcnt.value():
|
||||
case Instructions::i32_add.value():
|
||||
case Instructions::i32_sub.value():
|
||||
case Instructions::i32_mul.value():
|
||||
case Instructions::i32_divs.value():
|
||||
case Instructions::i32_divu.value():
|
||||
case Instructions::i32_rems.value():
|
||||
case Instructions::i32_remu.value():
|
||||
case Instructions::i32_and.value():
|
||||
case Instructions::i32_or.value():
|
||||
case Instructions::i32_xor.value():
|
||||
case Instructions::i32_shl.value():
|
||||
case Instructions::i32_shrs.value():
|
||||
case Instructions::i32_shru.value():
|
||||
case Instructions::i32_rotl.value():
|
||||
case Instructions::i32_rotr.value():
|
||||
case Instructions::i64_clz.value():
|
||||
case Instructions::i64_ctz.value():
|
||||
case Instructions::i64_popcnt.value():
|
||||
case Instructions::i64_add.value():
|
||||
case Instructions::i64_sub.value():
|
||||
case Instructions::i64_mul.value():
|
||||
case Instructions::i64_divs.value():
|
||||
case Instructions::i64_divu.value():
|
||||
case Instructions::i64_rems.value():
|
||||
case Instructions::i64_remu.value():
|
||||
case Instructions::i64_and.value():
|
||||
case Instructions::i64_or.value():
|
||||
case Instructions::i64_xor.value():
|
||||
case Instructions::i64_shl.value():
|
||||
case Instructions::i64_shrs.value():
|
||||
case Instructions::i64_shru.value():
|
||||
case Instructions::i64_rotl.value():
|
||||
case Instructions::i64_rotr.value():
|
||||
case Instructions::f32_abs.value():
|
||||
case Instructions::f32_neg.value():
|
||||
case Instructions::f32_ceil.value():
|
||||
case Instructions::f32_floor.value():
|
||||
case Instructions::f32_trunc.value():
|
||||
case Instructions::f32_nearest.value():
|
||||
case Instructions::f32_sqrt.value():
|
||||
case Instructions::f32_add.value():
|
||||
case Instructions::f32_sub.value():
|
||||
case Instructions::f32_mul.value():
|
||||
case Instructions::f32_div.value():
|
||||
case Instructions::f32_min.value():
|
||||
case Instructions::f32_max.value():
|
||||
case Instructions::f32_copysign.value():
|
||||
case Instructions::f64_abs.value():
|
||||
case Instructions::f64_neg.value():
|
||||
case Instructions::f64_ceil.value():
|
||||
case Instructions::f64_floor.value():
|
||||
case Instructions::f64_trunc.value():
|
||||
case Instructions::f64_nearest.value():
|
||||
case Instructions::f64_sqrt.value():
|
||||
case Instructions::f64_add.value():
|
||||
case Instructions::f64_sub.value():
|
||||
case Instructions::f64_mul.value():
|
||||
case Instructions::f64_div.value():
|
||||
case Instructions::f64_min.value():
|
||||
case Instructions::f64_max.value():
|
||||
case Instructions::f64_copysign.value():
|
||||
case Instructions::i32_wrap_i64.value():
|
||||
case Instructions::i32_trunc_sf32.value():
|
||||
case Instructions::i32_trunc_uf32.value():
|
||||
case Instructions::i32_trunc_sf64.value():
|
||||
case Instructions::i32_trunc_uf64.value():
|
||||
case Instructions::i64_extend_si32.value():
|
||||
case Instructions::i64_extend_ui32.value():
|
||||
case Instructions::i64_trunc_sf32.value():
|
||||
case Instructions::i64_trunc_uf32.value():
|
||||
case Instructions::i64_trunc_sf64.value():
|
||||
case Instructions::i64_trunc_uf64.value():
|
||||
case Instructions::f32_convert_si32.value():
|
||||
case Instructions::f32_convert_ui32.value():
|
||||
case Instructions::f32_convert_si64.value():
|
||||
case Instructions::f32_convert_ui64.value():
|
||||
case Instructions::f32_demote_f64.value():
|
||||
case Instructions::f64_convert_si32.value():
|
||||
case Instructions::f64_convert_ui32.value():
|
||||
case Instructions::f64_convert_si64.value():
|
||||
case Instructions::f64_convert_ui64.value():
|
||||
case Instructions::f64_promote_f32.value():
|
||||
case Instructions::i32_reinterpret_f32.value():
|
||||
case Instructions::i64_reinterpret_f64.value():
|
||||
case Instructions::f32_reinterpret_i32.value():
|
||||
case Instructions::f64_reinterpret_i64.value():
|
||||
case Instructions::i32_extend8_s.value():
|
||||
case Instructions::i32_extend16_s.value():
|
||||
case Instructions::i64_extend8_s.value():
|
||||
case Instructions::i64_extend16_s.value():
|
||||
case Instructions::i64_extend32_s.value():
|
||||
resulting_instructions.append(Instruction { opcode });
|
||||
break;
|
||||
case 0xfc: {
|
||||
// These are multibyte instructions.
|
||||
u32 selector;
|
||||
if (!LEB128::read_unsigned(stream, selector))
|
||||
return with_eof_check(stream, ParseError::InvalidInput);
|
||||
switch (selector) {
|
||||
case Instructions::i32_trunc_sat_f32_s_second:
|
||||
case Instructions::i32_trunc_sat_f32_u_second:
|
||||
case Instructions::i32_trunc_sat_f64_s_second:
|
||||
case Instructions::i32_trunc_sat_f64_u_second:
|
||||
case Instructions::i64_trunc_sat_f32_s_second:
|
||||
case Instructions::i64_trunc_sat_f32_u_second:
|
||||
case Instructions::i64_trunc_sat_f64_s_second:
|
||||
case Instructions::i64_trunc_sat_f64_u_second:
|
||||
resulting_instructions.append(Instruction { OpCode { 0xfc00 | selector } });
|
||||
break;
|
||||
case Instructions::memory_init_second: {
|
||||
auto index = GenericIndexParser<DataIndex>::parse(stream);
|
||||
if (index.is_error())
|
||||
return index.error();
|
||||
u8 unused;
|
||||
stream >> unused;
|
||||
if (stream.has_any_error())
|
||||
return with_eof_check(stream, ParseError::InvalidInput);
|
||||
if (unused != 0x00)
|
||||
return ParseError::InvalidImmediate;
|
||||
resulting_instructions.append(Instruction { OpCode { 0xfc00 | selector }, index.release_value() });
|
||||
break;
|
||||
}
|
||||
case Instructions::data_drop_second: {
|
||||
auto index = GenericIndexParser<DataIndex>::parse(stream);
|
||||
if (index.is_error())
|
||||
return index.error();
|
||||
resulting_instructions.append(Instruction { OpCode { 0xfc00 | selector }, index.release_value() });
|
||||
break;
|
||||
}
|
||||
case Instructions::memory_copy_second: {
|
||||
for (size_t i = 0; i < 2; ++i) {
|
||||
u8 unused;
|
||||
stream >> unused;
|
||||
if (stream.has_any_error())
|
||||
return with_eof_check(stream, ParseError::InvalidInput);
|
||||
if (unused != 0x00)
|
||||
return ParseError::InvalidImmediate;
|
||||
}
|
||||
resulting_instructions.append(Instruction { OpCode { 0xfc00 | selector } });
|
||||
break;
|
||||
}
|
||||
case Instructions::memory_fill_second: {
|
||||
u8 unused;
|
||||
stream >> unused;
|
||||
if (stream.has_any_error())
|
||||
return with_eof_check(stream, ParseError::InvalidInput);
|
||||
if (unused != 0x00)
|
||||
return ParseError::InvalidImmediate;
|
||||
resulting_instructions.append(Instruction { OpCode { 0xfc00 | selector } });
|
||||
break;
|
||||
}
|
||||
case Instructions::table_init_second: {
|
||||
auto element_index = GenericIndexParser<ElementIndex>::parse(stream);
|
||||
if (element_index.is_error())
|
||||
return element_index.error();
|
||||
auto table_index = GenericIndexParser<TableIndex>::parse(stream);
|
||||
if (table_index.is_error())
|
||||
return table_index.error();
|
||||
resulting_instructions.append(Instruction { OpCode { 0xfc00 | selector }, TableElementArgs { element_index.release_value(), table_index.release_value() } });
|
||||
break;
|
||||
}
|
||||
case Instructions::elem_drop_second: {
|
||||
auto element_index = GenericIndexParser<ElementIndex>::parse(stream);
|
||||
if (element_index.is_error())
|
||||
return element_index.error();
|
||||
resulting_instructions.append(Instruction { OpCode { 0xfc00 | selector }, element_index.release_value() });
|
||||
break;
|
||||
}
|
||||
case Instructions::table_copy_second: {
|
||||
auto lhs = GenericIndexParser<TableIndex>::parse(stream);
|
||||
if (lhs.is_error())
|
||||
return lhs.error();
|
||||
auto rhs = GenericIndexParser<TableIndex>::parse(stream);
|
||||
if (rhs.is_error())
|
||||
return rhs.error();
|
||||
resulting_instructions.append(Instruction { OpCode { 0xfc00 | selector }, TableTableArgs { lhs.release_value(), rhs.release_value() } });
|
||||
break;
|
||||
}
|
||||
case Instructions::table_grow_second:
|
||||
case Instructions::table_size_second:
|
||||
case Instructions::table_fill_second: {
|
||||
auto index = GenericIndexParser<TableIndex>::parse(stream);
|
||||
if (index.is_error())
|
||||
return index.error();
|
||||
resulting_instructions.append(Instruction { OpCode { 0xfc00 | selector }, index.release_value() });
|
||||
break;
|
||||
}
|
||||
default:
|
||||
return ParseError::UnknownInstruction;
|
||||
}
|
||||
return Vector { Instruction { OpCode { 0xfc00 | selector } } };
|
||||
}
|
||||
case Instructions::memory_fill_second: {
|
||||
u8 unused;
|
||||
stream >> unused;
|
||||
if (stream.has_any_error())
|
||||
return with_eof_check(stream, ParseError::InvalidInput);
|
||||
if (unused != 0x00)
|
||||
return ParseError::InvalidImmediate;
|
||||
return Vector { Instruction { OpCode { 0xfc00 | selector } } };
|
||||
}
|
||||
case Instructions::table_init_second: {
|
||||
auto element_index = GenericIndexParser<ElementIndex>::parse(stream);
|
||||
if (element_index.is_error())
|
||||
return element_index.error();
|
||||
auto table_index = GenericIndexParser<TableIndex>::parse(stream);
|
||||
if (table_index.is_error())
|
||||
return table_index.error();
|
||||
return Vector { Instruction { OpCode { 0xfc00 | selector }, TableElementArgs { element_index.release_value(), table_index.release_value() } } };
|
||||
}
|
||||
case Instructions::elem_drop_second: {
|
||||
auto element_index = GenericIndexParser<ElementIndex>::parse(stream);
|
||||
if (element_index.is_error())
|
||||
return element_index.error();
|
||||
return Vector { Instruction { OpCode { 0xfc00 | selector }, element_index.release_value() } };
|
||||
}
|
||||
case Instructions::table_copy_second: {
|
||||
auto lhs = GenericIndexParser<TableIndex>::parse(stream);
|
||||
if (lhs.is_error())
|
||||
return lhs.error();
|
||||
auto rhs = GenericIndexParser<TableIndex>::parse(stream);
|
||||
if (rhs.is_error())
|
||||
return rhs.error();
|
||||
return Vector { Instruction { OpCode { 0xfc00 | selector }, TableTableArgs { lhs.release_value(), rhs.release_value() } } };
|
||||
}
|
||||
case Instructions::table_grow_second:
|
||||
case Instructions::table_size_second:
|
||||
case Instructions::table_fill_second: {
|
||||
auto index = GenericIndexParser<TableIndex>::parse(stream);
|
||||
if (index.is_error())
|
||||
return index.error();
|
||||
return Vector { Instruction { OpCode { 0xfc00 | selector }, index.release_value() } };
|
||||
}
|
||||
default:
|
||||
return ParseError::UnknownInstruction;
|
||||
}
|
||||
}
|
||||
}
|
||||
} while (!nested_instructions.is_empty());
|
||||
|
||||
return ParseError::UnknownInstruction;
|
||||
return resulting_instructions;
|
||||
}
|
||||
|
||||
ParseResult<CustomSection> CustomSection::parse(InputStream& stream)
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue