diff options
| -rw-r--r-- | patio-to-cranelift/src/codegen/values.rs | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/patio-to-cranelift/src/codegen/values.rs b/patio-to-cranelift/src/codegen/values.rs index 11983d3c..32f1c70a 100644 --- a/patio-to-cranelift/src/codegen/values.rs +++ b/patio-to-cranelift/src/codegen/values.rs @@ -40,9 +40,22 @@ fn write_data_value( PatioDataValue::DataPtr(_) => todo!(), PatioDataValue::Int(int_value) => { - // TODO: handle 32-bit int - let value: i64 = eval_int_value(int_value, target_triple).into(); - bytes.extend_from_slice(&value.to_le_bytes()); + let value = eval_int_value(int_value, target_triple); + + match target_triple.pointer_width() { + Ok(target_lexicon::PointerWidth::U16) => { + panic!("unsupported pointer width: 16 bits") + } + Ok(target_lexicon::PointerWidth::U32) => { + let value_at_width: i32 = value; + bytes.extend_from_slice(&value_at_width.to_le_bytes()); + } + Ok(target_lexicon::PointerWidth::U64) => { + let value_at_width: i64 = value.into(); + bytes.extend_from_slice(&value_at_width.to_le_bytes()); + } + Err(()) => panic!("pointer width unknown"), + } } PatioDataValue::Int32(int_value) => { @@ -137,7 +150,7 @@ mod data_value_to_bytes_test { } #[test] - fn given_pointer_is_at_least_32_bits_wide_then_int_is_written_with_pointer_width() { + fn given_pointer_is_64_bits_wide_then_int_is_written_with_pointer_width() { let data_value = PatioDataValue::Int(PatioIntValue::Literal { value: 0x12345678 }); let bytes = data_value_to_bytes(data_value); @@ -146,6 +159,16 @@ mod data_value_to_bytes_test { } #[test] + fn given_pointer_is_32_bits_wide_then_int_is_written_with_pointer_width() { + let target_triple = target_lexicon::Triple::from_str("i686-unknown-linux-gnu").unwrap(); + let data_value = PatioDataValue::Int(PatioIntValue::Literal { value: 0x12345678 }); + + let bytes = super::data_value_to_bytes(&data_value, &target_triple); + + assert_eq!(bytes.as_ref(), &[0x78, 0x56, 0x34, 0x12]); + } + + #[test] fn int_32_is_written_as_four_bytes() { let data_value = PatioDataValue::Int32(PatioIntValue::Literal { value: 0x12345678 }); |