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LibWasm: Implement sign extension instructions

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This commit is contained in:
Ali Mohammad Pur 2021-06-09 17:13:38 +04:30 • committed by Ali Mohammad Pur
parent a4c4dd928b
commit 3a44011cd4
1 changed files with 17 additions and 5 deletions
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22
Userland/Libraries/LibWasm/AbstractMachine/BytecodeInterpreter.cpp
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@ -396,6 +396,13 @@ ALWAYS_INLINE static i32 ctz(T value)
VERIFY_NOT_REACHED();
}
template<typename InputT, typename OutputT>
ALWAYS_INLINE static OutputT extend_signed(InputT value)
{
// Note: C++ will take care of sign extension.
return value;
}
template<typename T>
ALWAYS_INLINE static T float_max(T lhs, T rhs)
{
@ -970,6 +977,16 @@ void BytecodeInterpreter::interpret(Configuration& configuration, InstructionPoi
UNARY_MAP(i32, bit_cast<float>, float);
case Instructions::f64_reinterpret_i64.value():
UNARY_MAP(i64, bit_cast<double>, double);
case Instructions::i32_extend8_s.value():
UNARY_MAP(i32, (extend_signed<i8, i32>), i32);
case Instructions::i32_extend16_s.value():
UNARY_MAP(i32, (extend_signed<i16, i32>), i32);
case Instructions::i64_extend8_s.value():
UNARY_MAP(i64, (extend_signed<i8, i64>), i64);
case Instructions::i64_extend16_s.value():
UNARY_MAP(i64, (extend_signed<i16, i64>), i64);
case Instructions::i64_extend32_s.value():
UNARY_MAP(i64, (extend_signed<i32, i64>), i64);
case Instructions::i32_trunc_sat_f32_s.value():
case Instructions::i32_trunc_sat_f32_u.value():
case Instructions::i32_trunc_sat_f64_s.value():
@ -988,11 +1005,6 @@ void BytecodeInterpreter::interpret(Configuration& configuration, InstructionPoi
case Instructions::table_grow.value():
case Instructions::table_size.value():
case Instructions::table_fill.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():
default:
unimplemented:;
dbgln("Instruction '{}' not implemented", instruction_name(instruction.opcode()));