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Diffstat (limited to 'vendor/gimli-0.26.2/src/read/value.rs')
| -rw-r--r-- | vendor/gimli-0.26.2/src/read/value.rs | 1621 |
1 files changed, 1621 insertions, 0 deletions
diff --git a/vendor/gimli-0.26.2/src/read/value.rs b/vendor/gimli-0.26.2/src/read/value.rs new file mode 100644 index 000000000..6f43ebb26 --- /dev/null +++ b/vendor/gimli-0.26.2/src/read/value.rs @@ -0,0 +1,1621 @@ +//! Definitions for values used in DWARF expressions. + +use crate::constants; +#[cfg(feature = "read")] +use crate::read::{AttributeValue, DebuggingInformationEntry}; +use crate::read::{Error, Reader, Result}; + +/// Convert a u64 to an i64, with sign extension if required. +/// +/// This is primarily used when needing to treat `Value::Generic` +/// as a signed value. +#[inline] +fn sign_extend(value: u64, mask: u64) -> i64 { + let value = (value & mask) as i64; + let sign = ((mask >> 1) + 1) as i64; + (value ^ sign).wrapping_sub(sign) +} + +#[inline] +fn mask_bit_size(addr_mask: u64) -> u32 { + 64 - addr_mask.leading_zeros() +} + +/// The type of an entry on the DWARF stack. +#[derive(Debug, Clone, Copy, PartialEq, Eq)] +pub enum ValueType { + /// The generic type, which is address-sized and of unspecified sign, + /// as specified in the DWARF 5 standard, section 2.5.1. + /// This type is also used to represent address base types. + Generic, + /// Signed 8-bit integer type. + I8, + /// Unsigned 8-bit integer type. + U8, + /// Signed 16-bit integer type. + I16, + /// Unsigned 16-bit integer type. + U16, + /// Signed 32-bit integer type. + I32, + /// Unsigned 32-bit integer type. + U32, + /// Signed 64-bit integer type. + I64, + /// Unsigned 64-bit integer type. + U64, + /// 32-bit floating point type. + F32, + /// 64-bit floating point type. + F64, +} + +/// The value of an entry on the DWARF stack. +#[derive(Debug, Clone, Copy, PartialEq)] +pub enum Value { + /// A generic value, which is address-sized and of unspecified sign. + Generic(u64), + /// A signed 8-bit integer value. + I8(i8), + /// An unsigned 8-bit integer value. + U8(u8), + /// A signed 16-bit integer value. + I16(i16), + /// An unsigned 16-bit integer value. + U16(u16), + /// A signed 32-bit integer value. + I32(i32), + /// An unsigned 32-bit integer value. + U32(u32), + /// A signed 64-bit integer value. + I64(i64), + /// An unsigned 64-bit integer value. + U64(u64), + /// A 32-bit floating point value. + F32(f32), + /// A 64-bit floating point value. + F64(f64), +} + +impl ValueType { + /// The size in bits of a value for this type. + pub fn bit_size(self, addr_mask: u64) -> u32 { + match self { + ValueType::Generic => mask_bit_size(addr_mask), + ValueType::I8 | ValueType::U8 => 8, + ValueType::I16 | ValueType::U16 => 16, + ValueType::I32 | ValueType::U32 | ValueType::F32 => 32, + ValueType::I64 | ValueType::U64 | ValueType::F64 => 64, + } + } + + /// Construct a `ValueType` from the attributes of a base type DIE. + pub fn from_encoding(encoding: constants::DwAte, byte_size: u64) -> Option<ValueType> { + Some(match (encoding, byte_size) { + (constants::DW_ATE_signed, 1) => ValueType::I8, + (constants::DW_ATE_signed, 2) => ValueType::I16, + (constants::DW_ATE_signed, 4) => ValueType::I32, + (constants::DW_ATE_signed, 8) => ValueType::I64, + (constants::DW_ATE_unsigned, 1) => ValueType::U8, + (constants::DW_ATE_unsigned, 2) => ValueType::U16, + (constants::DW_ATE_unsigned, 4) => ValueType::U32, + (constants::DW_ATE_unsigned, 8) => ValueType::U64, + (constants::DW_ATE_float, 4) => ValueType::F32, + (constants::DW_ATE_float, 8) => ValueType::F64, + _ => return None, + }) + } + + /// Construct a `ValueType` from a base type DIE. + #[cfg(feature = "read")] + pub fn from_entry<R: Reader>( + entry: &DebuggingInformationEntry<R>, + ) -> Result<Option<ValueType>> { + if entry.tag() != constants::DW_TAG_base_type { + return Ok(None); + } + let mut encoding = None; + let mut byte_size = None; + let mut endianity = constants::DW_END_default; + let mut attrs = entry.attrs(); + while let Some(attr) = attrs.next()? { + match attr.name() { + constants::DW_AT_byte_size => byte_size = attr.udata_value(), + constants::DW_AT_encoding => { + if let AttributeValue::Encoding(x) = attr.value() { + encoding = Some(x); + } + } + constants::DW_AT_endianity => { + if let AttributeValue::Endianity(x) = attr.value() { + endianity = x; + } + } + _ => {} + } + } + + if endianity != constants::DW_END_default { + // TODO: we could check if it matches the reader endianity, + // but normally it would use DW_END_default in that case. + return Ok(None); + } + + if let (Some(encoding), Some(byte_size)) = (encoding, byte_size) { + Ok(ValueType::from_encoding(encoding, byte_size)) + } else { + Ok(None) + } + } +} + +impl Value { + /// Return the `ValueType` corresponding to this `Value`. + pub fn value_type(&self) -> ValueType { + match *self { + Value::Generic(_) => ValueType::Generic, + Value::I8(_) => ValueType::I8, + Value::U8(_) => ValueType::U8, + Value::I16(_) => ValueType::I16, + Value::U16(_) => ValueType::U16, + Value::I32(_) => ValueType::I32, + Value::U32(_) => ValueType::U32, + Value::I64(_) => ValueType::I64, + Value::U64(_) => ValueType::U64, + Value::F32(_) => ValueType::F32, + Value::F64(_) => ValueType::F64, + } + } + + /// Read a `Value` with the given `value_type` from a `Reader`. + pub fn parse<R: Reader>(value_type: ValueType, mut bytes: R) -> Result<Value> { + let value = match value_type { + ValueType::I8 => Value::I8(bytes.read_i8()?), + ValueType::U8 => Value::U8(bytes.read_u8()?), + ValueType::I16 => Value::I16(bytes.read_i16()?), + ValueType::U16 => Value::U16(bytes.read_u16()?), + ValueType::I32 => Value::I32(bytes.read_i32()?), + ValueType::U32 => Value::U32(bytes.read_u32()?), + ValueType::I64 => Value::I64(bytes.read_i64()?), + ValueType::U64 => Value::U64(bytes.read_u64()?), + ValueType::F32 => Value::F32(bytes.read_f32()?), + ValueType::F64 => Value::F64(bytes.read_f64()?), + _ => return Err(Error::UnsupportedTypeOperation), + }; + Ok(value) + } + + /// Convert a `Value` to a `u64`. + /// + /// The `ValueType` of `self` must be integral. + /// Values are sign extended if the source value is signed. + pub fn to_u64(self, addr_mask: u64) -> Result<u64> { + let value = match self { + Value::Generic(value) => value & addr_mask, + Value::I8(value) => value as u64, + Value::U8(value) => u64::from(value), + Value::I16(value) => value as u64, + Value::U16(value) => u64::from(value), + Value::I32(value) => value as u64, + Value::U32(value) => u64::from(value), + Value::I64(value) => value as u64, + Value::U64(value) => value as u64, + _ => return Err(Error::IntegralTypeRequired), + }; + Ok(value) + } + + /// Create a `Value` with the given `value_type` from a `u64` value. + /// + /// The `value_type` may be integral or floating point. + /// The result is truncated if the `u64` value does + /// not fit the bounds of the `value_type`. + pub fn from_u64(value_type: ValueType, value: u64) -> Result<Value> { + let value = match value_type { + ValueType::Generic => Value::Generic(value), + ValueType::I8 => Value::I8(value as i8), + ValueType::U8 => Value::U8(value as u8), + ValueType::I16 => Value::I16(value as i16), + ValueType::U16 => Value::U16(value as u16), + ValueType::I32 => Value::I32(value as i32), + ValueType::U32 => Value::U32(value as u32), + ValueType::I64 => Value::I64(value as i64), + ValueType::U64 => Value::U64(value), + ValueType::F32 => Value::F32(value as f32), + ValueType::F64 => Value::F64(value as f64), + }; + Ok(value) + } + + /// Create a `Value` with the given `value_type` from a `f32` value. + /// + /// The `value_type` may be integral or floating point. + /// The result is not defined if the `f32` value does + /// not fit the bounds of the `value_type`. + fn from_f32(value_type: ValueType, value: f32) -> Result<Value> { + let value = match value_type { + ValueType::Generic => Value::Generic(value as u64), + ValueType::I8 => Value::I8(value as i8), + ValueType::U8 => Value::U8(value as u8), + ValueType::I16 => Value::I16(value as i16), + ValueType::U16 => Value::U16(value as u16), + ValueType::I32 => Value::I32(value as i32), + ValueType::U32 => Value::U32(value as u32), + ValueType::I64 => Value::I64(value as i64), + ValueType::U64 => Value::U64(value as u64), + ValueType::F32 => Value::F32(value), + ValueType::F64 => Value::F64(f64::from(value)), + }; + Ok(value) + } + + /// Create a `Value` with the given `value_type` from a `f64` value. + /// + /// The `value_type` may be integral or floating point. + /// The result is not defined if the `f64` value does + /// not fit the bounds of the `value_type`. + fn from_f64(value_type: ValueType, value: f64) -> Result<Value> { + let value = match value_type { + ValueType::Generic => Value::Generic(value as u64), + ValueType::I8 => Value::I8(value as i8), + ValueType::U8 => Value::U8(value as u8), + ValueType::I16 => Value::I16(value as i16), + ValueType::U16 => Value::U16(value as u16), + ValueType::I32 => Value::I32(value as i32), + ValueType::U32 => Value::U32(value as u32), + ValueType::I64 => Value::I64(value as i64), + ValueType::U64 => Value::U64(value as u64), + ValueType::F32 => Value::F32(value as f32), + ValueType::F64 => Value::F64(value), + }; + Ok(value) + } + + /// Convert a `Value` to the given `value_type`. + /// + /// When converting between integral types, the result is truncated + /// if the source value does not fit the bounds of the `value_type`. + /// When converting from floating point types, the result is not defined + /// if the source value does not fit the bounds of the `value_type`. + /// + /// This corresponds to the DWARF `DW_OP_convert` operation. + pub fn convert(self, value_type: ValueType, addr_mask: u64) -> Result<Value> { + match self { + Value::F32(value) => Value::from_f32(value_type, value), + Value::F64(value) => Value::from_f64(value_type, value), + _ => Value::from_u64(value_type, self.to_u64(addr_mask)?), + } + } + + /// Reinterpret the bits in a `Value` as the given `value_type`. + /// + /// The source and result value types must have equal sizes. + /// + /// This corresponds to the DWARF `DW_OP_reinterpret` operation. + pub fn reinterpret(self, value_type: ValueType, addr_mask: u64) -> Result<Value> { + if self.value_type().bit_size(addr_mask) != value_type.bit_size(addr_mask) { + return Err(Error::TypeMismatch); + } + let bits = match self { + Value::Generic(value) => value, + Value::I8(value) => value as u64, + Value::U8(value) => u64::from(value), + Value::I16(value) => value as u64, + Value::U16(value) => u64::from(value), + Value::I32(value) => value as u64, + Value::U32(value) => u64::from(value), + Value::I64(value) => value as u64, + Value::U64(value) => value, + Value::F32(value) => u64::from(f32::to_bits(value)), + Value::F64(value) => f64::to_bits(value), + }; + let value = match value_type { + ValueType::Generic => Value::Generic(bits), + ValueType::I8 => Value::I8(bits as i8), + ValueType::U8 => Value::U8(bits as u8), + ValueType::I16 => Value::I16(bits as i16), + ValueType::U16 => Value::U16(bits as u16), + ValueType::I32 => Value::I32(bits as i32), + ValueType::U32 => Value::U32(bits as u32), + ValueType::I64 => Value::I64(bits as i64), + ValueType::U64 => Value::U64(bits), + ValueType::F32 => Value::F32(f32::from_bits(bits as u32)), + ValueType::F64 => Value::F64(f64::from_bits(bits)), + }; + Ok(value) + } + + /// Perform an absolute value operation. + /// + /// If the value type is `Generic`, then it is interpreted as a signed value. + /// + /// This corresponds to the DWARF `DW_OP_abs` operation. + pub fn abs(self, addr_mask: u64) -> Result<Value> { + // wrapping_abs() can be used because DWARF specifies that the result is undefined + // for negative minimal values. + let value = match self { + Value::Generic(value) => { + Value::Generic(sign_extend(value, addr_mask).wrapping_abs() as u64) + } + Value::I8(value) => Value::I8(value.wrapping_abs()), + Value::I16(value) => Value::I16(value.wrapping_abs()), + Value::I32(value) => Value::I32(value.wrapping_abs()), + Value::I64(value) => Value::I64(value.wrapping_abs()), + // f32/f64::abs() is not available in libcore + Value::F32(value) => Value::F32(if value < 0. { -value } else { value }), + Value::F64(value) => Value::F64(if value < 0. { -value } else { value }), + Value::U8(_) | Value::U16(_) | Value::U32(_) | Value::U64(_) => self, + }; + Ok(value) + } + + /// Perform a negation operation. + /// + /// If the value type is `Generic`, then it is interpreted as a signed value. + /// + /// This corresponds to the DWARF `DW_OP_neg` operation. + pub fn neg(self, addr_mask: u64) -> Result<Value> { + // wrapping_neg() can be used because DWARF specifies that the result is undefined + // for negative minimal values. + let value = match self { + Value::Generic(value) => { + Value::Generic(sign_extend(value, addr_mask).wrapping_neg() as u64) + } + Value::I8(value) => Value::I8(value.wrapping_neg()), + Value::I16(value) => Value::I16(value.wrapping_neg()), + Value::I32(value) => Value::I32(value.wrapping_neg()), + Value::I64(value) => Value::I64(value.wrapping_neg()), + Value::F32(value) => Value::F32(-value), + Value::F64(value) => Value::F64(-value), + // It's unclear if these should implicity convert to a signed value. + // For now, we don't support them. + Value::U8(_) | Value::U16(_) | Value::U32(_) | Value::U64(_) => { + return Err(Error::UnsupportedTypeOperation); + } + }; + Ok(value) + } + + /// Perform an addition operation. + /// + /// This operation requires matching types. + /// + /// This corresponds to the DWARF `DW_OP_plus` operation. + pub fn add(self, rhs: Value, addr_mask: u64) -> Result<Value> { + let value = match (self, rhs) { + (Value::Generic(v1), Value::Generic(v2)) => { + Value::Generic(v1.wrapping_add(v2) & addr_mask) + } + (Value::I8(v1), Value::I8(v2)) => Value::I8(v1.wrapping_add(v2)), + (Value::U8(v1), Value::U8(v2)) => Value::U8(v1.wrapping_add(v2)), + (Value::I16(v1), Value::I16(v2)) => Value::I16(v1.wrapping_add(v2)), + (Value::U16(v1), Value::U16(v2)) => Value::U16(v1.wrapping_add(v2)), + (Value::I32(v1), Value::I32(v2)) => Value::I32(v1.wrapping_add(v2)), + (Value::U32(v1), Value::U32(v2)) => Value::U32(v1.wrapping_add(v2)), + (Value::I64(v1), Value::I64(v2)) => Value::I64(v1.wrapping_add(v2)), + (Value::U64(v1), Value::U64(v2)) => Value::U64(v1.wrapping_add(v2)), + (Value::F32(v1), Value::F32(v2)) => Value::F32(v1 + v2), + (Value::F64(v1), Value::F64(v2)) => Value::F64(v1 + v2), + _ => return Err(Error::TypeMismatch), + }; + Ok(value) + } + + /// Perform a subtraction operation. + /// + /// This operation requires matching types. + /// + /// This corresponds to the DWARF `DW_OP_minus` operation. + pub fn sub(self, rhs: Value, addr_mask: u64) -> Result<Value> { + let value = match (self, rhs) { + (Value::Generic(v1), Value::Generic(v2)) => { + Value::Generic(v1.wrapping_sub(v2) & addr_mask) + } + (Value::I8(v1), Value::I8(v2)) => Value::I8(v1.wrapping_sub(v2)), + (Value::U8(v1), Value::U8(v2)) => Value::U8(v1.wrapping_sub(v2)), + (Value::I16(v1), Value::I16(v2)) => Value::I16(v1.wrapping_sub(v2)), + (Value::U16(v1), Value::U16(v2)) => Value::U16(v1.wrapping_sub(v2)), + (Value::I32(v1), Value::I32(v2)) => Value::I32(v1.wrapping_sub(v2)), + (Value::U32(v1), Value::U32(v2)) => Value::U32(v1.wrapping_sub(v2)), + (Value::I64(v1), Value::I64(v2)) => Value::I64(v1.wrapping_sub(v2)), + (Value::U64(v1), Value::U64(v2)) => Value::U64(v1.wrapping_sub(v2)), + (Value::F32(v1), Value::F32(v2)) => Value::F32(v1 - v2), + (Value::F64(v1), Value::F64(v2)) => Value::F64(v1 - v2), + _ => return Err(Error::TypeMismatch), + }; + Ok(value) + } + + /// Perform a multiplication operation. + /// + /// This operation requires matching types. + /// + /// This corresponds to the DWARF `DW_OP_mul` operation. + pub fn mul(self, rhs: Value, addr_mask: u64) -> Result<Value> { + let value = match (self, rhs) { + (Value::Generic(v1), Value::Generic(v2)) => { + Value::Generic(v1.wrapping_mul(v2) & addr_mask) + } + (Value::I8(v1), Value::I8(v2)) => Value::I8(v1.wrapping_mul(v2)), + (Value::U8(v1), Value::U8(v2)) => Value::U8(v1.wrapping_mul(v2)), + (Value::I16(v1), Value::I16(v2)) => Value::I16(v1.wrapping_mul(v2)), + (Value::U16(v1), Value::U16(v2)) => Value::U16(v1.wrapping_mul(v2)), + (Value::I32(v1), Value::I32(v2)) => Value::I32(v1.wrapping_mul(v2)), + (Value::U32(v1), Value::U32(v2)) => Value::U32(v1.wrapping_mul(v2)), + (Value::I64(v1), Value::I64(v2)) => Value::I64(v1.wrapping_mul(v2)), + (Value::U64(v1), Value::U64(v2)) => Value::U64(v1.wrapping_mul(v2)), + (Value::F32(v1), Value::F32(v2)) => Value::F32(v1 * v2), + (Value::F64(v1), Value::F64(v2)) => Value::F64(v1 * v2), + _ => return Err(Error::TypeMismatch), + }; + Ok(value) + } + + /// Perform a division operation. + /// + /// This operation requires matching types. + /// If the value type is `Generic`, then it is interpreted as a signed value. + /// + /// This corresponds to the DWARF `DW_OP_div` operation. + pub fn div(self, rhs: Value, addr_mask: u64) -> Result<Value> { + match rhs { + Value::Generic(v2) if sign_extend(v2, addr_mask) == 0 => { + return Err(Error::DivisionByZero); + } + Value::I8(0) + | Value::U8(0) + | Value::I16(0) + | Value::U16(0) + | Value::I32(0) + | Value::U32(0) + | Value::I64(0) + | Value::U64(0) => { + return Err(Error::DivisionByZero); + } + _ => {} + } + let value = match (self, rhs) { + (Value::Generic(v1), Value::Generic(v2)) => { + // Signed division + Value::Generic( + sign_extend(v1, addr_mask).wrapping_div(sign_extend(v2, addr_mask)) as u64, + ) + } + (Value::I8(v1), Value::I8(v2)) => Value::I8(v1.wrapping_div(v2)), + (Value::U8(v1), Value::U8(v2)) => Value::U8(v1.wrapping_div(v2)), + (Value::I16(v1), Value::I16(v2)) => Value::I16(v1.wrapping_div(v2)), + (Value::U16(v1), Value::U16(v2)) => Value::U16(v1.wrapping_div(v2)), + (Value::I32(v1), Value::I32(v2)) => Value::I32(v1.wrapping_div(v2)), + (Value::U32(v1), Value::U32(v2)) => Value::U32(v1.wrapping_div(v2)), + (Value::I64(v1), Value::I64(v2)) => Value::I64(v1.wrapping_div(v2)), + (Value::U64(v1), Value::U64(v2)) => Value::U64(v1.wrapping_div(v2)), + (Value::F32(v1), Value::F32(v2)) => Value::F32(v1 / v2), + (Value::F64(v1), Value::F64(v2)) => Value::F64(v1 / v2), + _ => return Err(Error::TypeMismatch), + }; + Ok(value) + } + + /// Perform a remainder operation. + /// + /// This operation requires matching integral types. + /// If the value type is `Generic`, then it is interpreted as an unsigned value. + /// + /// This corresponds to the DWARF `DW_OP_mod` operation. + pub fn rem(self, rhs: Value, addr_mask: u64) -> Result<Value> { + match rhs { + Value::Generic(rhs) if (rhs & addr_mask) == 0 => { + return Err(Error::DivisionByZero); + } + Value::I8(0) + | Value::U8(0) + | Value::I16(0) + | Value::U16(0) + | Value::I32(0) + | Value::U32(0) + | Value::I64(0) + | Value::U64(0) => { + return Err(Error::DivisionByZero); + } + _ => {} + } + let value = match (self, rhs) { + (Value::Generic(v1), Value::Generic(v2)) => { + // Unsigned modulus + Value::Generic((v1 & addr_mask).wrapping_rem(v2 & addr_mask)) + } + (Value::I8(v1), Value::I8(v2)) => Value::I8(v1.wrapping_rem(v2)), + (Value::U8(v1), Value::U8(v2)) => Value::U8(v1.wrapping_rem(v2)), + (Value::I16(v1), Value::I16(v2)) => Value::I16(v1.wrapping_rem(v2)), + (Value::U16(v1), Value::U16(v2)) => Value::U16(v1.wrapping_rem(v2)), + (Value::I32(v1), Value::I32(v2)) => Value::I32(v1.wrapping_rem(v2)), + (Value::U32(v1), Value::U32(v2)) => Value::U32(v1.wrapping_rem(v2)), + (Value::I64(v1), Value::I64(v2)) => Value::I64(v1.wrapping_rem(v2)), + (Value::U64(v1), Value::U64(v2)) => Value::U64(v1.wrapping_rem(v2)), + (Value::F32(_), Value::F32(_)) => return Err(Error::IntegralTypeRequired), + (Value::F64(_), Value::F64(_)) => return Err(Error::IntegralTypeRequired), + _ => return Err(Error::TypeMismatch), + }; + Ok(value) + } + + /// Perform a bitwise not operation. + /// + /// This operation requires matching integral types. + /// + /// This corresponds to the DWARF `DW_OP_not` operation. + pub fn not(self, addr_mask: u64) -> Result<Value> { + let value_type = self.value_type(); + let v = self.to_u64(addr_mask)?; + Value::from_u64(value_type, !v) + } + + /// Perform a bitwise and operation. + /// + /// This operation requires matching integral types. + /// + /// This corresponds to the DWARF `DW_OP_and` operation. + pub fn and(self, rhs: Value, addr_mask: u64) -> Result<Value> { + let value_type = self.value_type(); + if value_type != rhs.value_type() { + return Err(Error::TypeMismatch); + } + let v1 = self.to_u64(addr_mask)?; + let v2 = rhs.to_u64(addr_mask)?; + Value::from_u64(value_type, v1 & v2) + } + + /// Perform a bitwise or operation. + /// + /// This operation requires matching integral types. + /// + /// This corresponds to the DWARF `DW_OP_or` operation. + pub fn or(self, rhs: Value, addr_mask: u64) -> Result<Value> { + let value_type = self.value_type(); + if value_type != rhs.value_type() { + return Err(Error::TypeMismatch); + } + let v1 = self.to_u64(addr_mask)?; + let v2 = rhs.to_u64(addr_mask)?; + Value::from_u64(value_type, v1 | v2) + } + + /// Perform a bitwise exclusive-or operation. + /// + /// This operation requires matching integral types. + /// + /// This corresponds to the DWARF `DW_OP_xor` operation. + pub fn xor(self, rhs: Value, addr_mask: u64) -> Result<Value> { + let value_type = self.value_type(); + if value_type != rhs.value_type() { + return Err(Error::TypeMismatch); + } + let v1 = self.to_u64(addr_mask)?; + let v2 = rhs.to_u64(addr_mask)?; + Value::from_u64(value_type, v1 ^ v2) + } + + /// Convert value to bit length suitable for a shift operation. + /// + /// If the value is negative then an error is returned. + fn shift_length(self) -> Result<u64> { + let value = match self { + Value::Generic(value) => value, + Value::I8(value) if value >= 0 => value as u64, + Value::U8(value) => u64::from(value), + Value::I16(value) if value >= 0 => value as u64, + Value::U16(value) => u64::from(value), + Value::I32(value) if value >= 0 => value as u64, + Value::U32(value) => u64::from(value), + Value::I64(value) if value >= 0 => value as u64, + Value::U64(value) => value, + _ => return Err(Error::InvalidShiftExpression), + }; + Ok(value) + } + + /// Perform a shift left operation. + /// + /// This operation requires integral types. + /// If the shift length exceeds the type size, then 0 is returned. + /// If the shift length is negative then an error is returned. + /// + /// This corresponds to the DWARF `DW_OP_shl` operation. + pub fn shl(self, rhs: Value, addr_mask: u64) -> Result<Value> { + let v2 = rhs.shift_length()?; + let value = match self { + Value::Generic(v1) => Value::Generic(if v2 >= u64::from(mask_bit_size(addr_mask)) { + 0 + } else { + (v1 & addr_mask) << v2 + }), + Value::I8(v1) => Value::I8(if v2 >= 8 { 0 } else { v1 << v2 }), + Value::U8(v1) => Value::U8(if v2 >= 8 { 0 } else { v1 << v2 }), + Value::I16(v1) => Value::I16(if v2 >= 16 { 0 } else { v1 << v2 }), + Value::U16(v1) => Value::U16(if v2 >= 16 { 0 } else { v1 << v2 }), + Value::I32(v1) => Value::I32(if v2 >= 32 { 0 } else { v1 << v2 }), + Value::U32(v1) => Value::U32(if v2 >= 32 { 0 } else { v1 << v2 }), + Value::I64(v1) => Value::I64(if v2 >= 64 { 0 } else { v1 << v2 }), + Value::U64(v1) => Value::U64(if v2 >= 64 { 0 } else { v1 << v2 }), + _ => return Err(Error::IntegralTypeRequired), + }; + Ok(value) + } + + /// Perform a logical shift right operation. + /// + /// This operation requires an unsigned integral type for the value. + /// If the value type is `Generic`, then it is interpreted as an unsigned value. + /// + /// This operation requires an integral type for the shift length. + /// If the shift length exceeds the type size, then 0 is returned. + /// If the shift length is negative then an error is returned. + /// + /// This corresponds to the DWARF `DW_OP_shr` operation. + pub fn shr(self, rhs: Value, addr_mask: u64) -> Result<Value> { + let v2 = rhs.shift_length()?; + let value = match self { + Value::Generic(v1) => Value::Generic(if v2 >= u64::from(mask_bit_size(addr_mask)) { + 0 + } else { + (v1 & addr_mask) >> v2 + }), + Value::U8(v1) => Value::U8(if v2 >= 8 { 0 } else { v1 >> v2 }), + Value::U16(v1) => Value::U16(if v2 >= 16 { 0 } else { v1 >> v2 }), + Value::U32(v1) => Value::U32(if v2 >= 32 { 0 } else { v1 >> v2 }), + Value::U64(v1) => Value::U64(if v2 >= 64 { 0 } else { v1 >> v2 }), + // It's unclear if signed values should implicity convert to an unsigned value. + // For now, we don't support them. + Value::I8(_) | Value::I16(_) | Value::I32(_) | Value::I64(_) => { + return Err(Error::UnsupportedTypeOperation); + } + _ => return Err(Error::IntegralTypeRequired), + }; + Ok(value) + } + + /// Perform an arithmetic shift right operation. + /// + /// This operation requires a signed integral type for the value. + /// If the value type is `Generic`, then it is interpreted as a signed value. + /// + /// This operation requires an integral type for the shift length. + /// If the shift length exceeds the type size, then 0 is returned for positive values, + /// and -1 is returned for negative values. + /// If the shift length is negative then an error is returned. + /// + /// This corresponds to the DWARF `DW_OP_shra` operation. + pub fn shra(self, rhs: Value, addr_mask: u64) -> Result<Value> { + let v2 = rhs.shift_length()?; + let value = match self { + Value::Generic(v1) => { + let v1 = sign_extend(v1, addr_mask); + let value = if v2 >= u64::from(mask_bit_size(addr_mask)) { + if v1 < 0 { + !0 + } else { + 0 + } + } else { + (v1 >> v2) as u64 + }; + Value::Generic(value) + } + Value::I8(v1) => Value::I8(if v2 >= 8 { + if v1 < 0 { + !0 + } else { + 0 + } + } else { + v1 >> v2 + }), + Value::I16(v1) => Value::I16(if v2 >= 16 { + if v1 < 0 { + !0 + } else { + 0 + } + } else { + v1 >> v2 + }), + Value::I32(v1) => Value::I32(if v2 >= 32 { + if v1 < 0 { + !0 + } else { + 0 + } + } else { + v1 >> v2 + }), + Value::I64(v1) => Value::I64(if v2 >= 64 { + if v1 < 0 { + !0 + } else { + 0 + } + } else { + v1 >> v2 + }), + // It's unclear if unsigned values should implicity convert to a signed value. + // For now, we don't support them. + Value::U8(_) | Value::U16(_) | Value::U32(_) | Value::U64(_) => { + return Err(Error::UnsupportedTypeOperation); + } + _ => return Err(Error::IntegralTypeRequired), + }; + Ok(value) + } + + /// Perform the `==` relational operation. + /// + /// This operation requires matching integral types. + /// If the value type is `Generic`, then it is interpreted as a signed value. + /// + /// This corresponds to the DWARF `DW_OP_eq` operation. + pub fn eq(self, rhs: Value, addr_mask: u64) -> Result<Value> { + let value = match (self, rhs) { + (Value::Generic(v1), Value::Generic(v2)) => { + sign_extend(v1, addr_mask) == sign_extend(v2, addr_mask) + } + (Value::I8(v1), Value::I8(v2)) => v1 == v2, + (Value::U8(v1), Value::U8(v2)) => v1 == v2, + (Value::I16(v1), Value::I16(v2)) => v1 == v2, + (Value::U16(v1), Value::U16(v2)) => v1 == v2, + (Value::I32(v1), Value::I32(v2)) => v1 == v2, + (Value::U32(v1), Value::U32(v2)) => v1 == v2, + (Value::I64(v1), Value::I64(v2)) => v1 == v2, + (Value::U64(v1), Value::U64(v2)) => v1 == v2, + (Value::F32(v1), Value::F32(v2)) => v1 == v2, + (Value::F64(v1), Value::F64(v2)) => v1 == v2, + _ => return Err(Error::TypeMismatch), + }; + Ok(Value::Generic(value as u64)) + } + + /// Perform the `>=` relational operation. + /// + /// This operation requires matching integral types. + /// If the value type is `Generic`, then it is interpreted as a signed value. + /// + /// This corresponds to the DWARF `DW_OP_ge` operation. + pub fn ge(self, rhs: Value, addr_mask: u64) -> Result<Value> { + let value = match (self, rhs) { + (Value::Generic(v1), Value::Generic(v2)) => { + sign_extend(v1, addr_mask) >= sign_extend(v2, addr_mask) + } + (Value::I8(v1), Value::I8(v2)) => v1 >= v2, + (Value::U8(v1), Value::U8(v2)) => v1 >= v2, + (Value::I16(v1), Value::I16(v2)) => v1 >= v2, + (Value::U16(v1), Value::U16(v2)) => v1 >= v2, + (Value::I32(v1), Value::I32(v2)) => v1 >= v2, + (Value::U32(v1), Value::U32(v2)) => v1 >= v2, + (Value::I64(v1), Value::I64(v2)) => v1 >= v2, + (Value::U64(v1), Value::U64(v2)) => v1 >= v2, + (Value::F32(v1), Value::F32(v2)) => v1 >= v2, + (Value::F64(v1), Value::F64(v2)) => v1 >= v2, + _ => return Err(Error::TypeMismatch), + }; + Ok(Value::Generic(value as u64)) + } + + /// Perform the `>` relational operation. + /// + /// This operation requires matching integral types. + /// If the value type is `Generic`, then it is interpreted as a signed value. + /// + /// This corresponds to the DWARF `DW_OP_gt` operation. + pub fn gt(self, rhs: Value, addr_mask: u64) -> Result<Value> { + let value = match (self, rhs) { + (Value::Generic(v1), Value::Generic(v2)) => { + sign_extend(v1, addr_mask) > sign_extend(v2, addr_mask) + } + (Value::I8(v1), Value::I8(v2)) => v1 > v2, + (Value::U8(v1), Value::U8(v2)) => v1 > v2, + (Value::I16(v1), Value::I16(v2)) => v1 > v2, + (Value::U16(v1), Value::U16(v2)) => v1 > v2, + (Value::I32(v1), Value::I32(v2)) => v1 > v2, + (Value::U32(v1), Value::U32(v2)) => v1 > v2, + (Value::I64(v1), Value::I64(v2)) => v1 > v2, + (Value::U64(v1), Value::U64(v2)) => v1 > v2, + (Value::F32(v1), Value::F32(v2)) => v1 > v2, + (Value::F64(v1), Value::F64(v2)) => v1 > v2, + _ => return Err(Error::TypeMismatch), + }; + Ok(Value::Generic(value as u64)) + } + + /// Perform the `<= relational operation. + /// + /// This operation requires matching integral types. + /// If the value type is `Generic`, then it is interpreted as a signed value. + /// + /// This corresponds to the DWARF `DW_OP_le` operation. + pub fn le(self, rhs: Value, addr_mask: u64) -> Result<Value> { + let value = match (self, rhs) { + (Value::Generic(v1), Value::Generic(v2)) => { + sign_extend(v1, addr_mask) <= sign_extend(v2, addr_mask) + } + (Value::I8(v1), Value::I8(v2)) => v1 <= v2, + (Value::U8(v1), Value::U8(v2)) => v1 <= v2, + (Value::I16(v1), Value::I16(v2)) => v1 <= v2, + (Value::U16(v1), Value::U16(v2)) => v1 <= v2, + (Value::I32(v1), Value::I32(v2)) => v1 <= v2, + (Value::U32(v1), Value::U32(v2)) => v1 <= v2, + (Value::I64(v1), Value::I64(v2)) => v1 <= v2, + (Value::U64(v1), Value::U64(v2)) => v1 <= v2, + (Value::F32(v1), Value::F32(v2)) => v1 <= v2, + (Value::F64(v1), Value::F64(v2)) => v1 <= v2, + _ => return Err(Error::TypeMismatch), + }; + Ok(Value::Generic(value as u64)) + } + + /// Perform the `< relational operation. + /// + /// This operation requires matching integral types. + /// If the value type is `Generic`, then it is interpreted as a signed value. + /// + /// This corresponds to the DWARF `DW_OP_lt` operation. + pub fn lt(self, rhs: Value, addr_mask: u64) -> Result<Value> { + let value = match (self, rhs) { + (Value::Generic(v1), Value::Generic(v2)) => { + sign_extend(v1, addr_mask) < sign_extend(v2, addr_mask) + } + (Value::I8(v1), Value::I8(v2)) => v1 < v2, + (Value::U8(v1), Value::U8(v2)) => v1 < v2, + (Value::I16(v1), Value::I16(v2)) => v1 < v2, + (Value::U16(v1), Value::U16(v2)) => v1 < v2, + (Value::I32(v1), Value::I32(v2)) => v1 < v2, + (Value::U32(v1), Value::U32(v2)) => v1 < v2, + (Value::I64(v1), Value::I64(v2)) => v1 < v2, + (Value::U64(v1), Value::U64(v2)) => v1 < v2, + (Value::F32(v1), Value::F32(v2)) => v1 < v2, + (Value::F64(v1), Value::F64(v2)) => v1 < v2, + _ => return Err(Error::TypeMismatch), + }; + Ok(Value::Generic(value as u64)) + } + + /// Perform the `!= relational operation. + /// + /// This operation requires matching integral types. + /// If the value type is `Generic`, then it is interpreted as a signed value. + /// + /// This corresponds to the DWARF `DW_OP_ne` operation. + pub fn ne(self, rhs: Value, addr_mask: u64) -> Result<Value> { + let value = match (self, rhs) { + (Value::Generic(v1), Value::Generic(v2)) => { + sign_extend(v1, addr_mask) != sign_extend(v2, addr_mask) + } + (Value::I8(v1), Value::I8(v2)) => v1 != v2, + (Value::U8(v1), Value::U8(v2)) => v1 != v2, + (Value::I16(v1), Value::I16(v2)) => v1 != v2, + (Value::U16(v1), Value::U16(v2)) => v1 != v2, + (Value::I32(v1), Value::I32(v2)) => v1 != v2, + (Value::U32(v1), Value::U32(v2)) => v1 != v2, + (Value::I64(v1), Value::I64(v2)) => v1 != v2, + (Value::U64(v1), Value::U64(v2)) => v1 != v2, + (Value::F32(v1), Value::F32(v2)) => v1 != v2, + (Value::F64(v1), Value::F64(v2)) => v1 != v2, + _ => return Err(Error::TypeMismatch), + }; + Ok(Value::Generic(value as u64)) + } +} + +#[cfg(test)] +mod tests { + use super::*; + use crate::common::{DebugAbbrevOffset, DebugInfoOffset, Encoding, Format}; + use crate::endianity::LittleEndian; + use crate::read::{ + Abbreviation, AttributeSpecification, DebuggingInformationEntry, EndianSlice, UnitHeader, + UnitOffset, UnitType, + }; + + #[test] + #[rustfmt::skip] + fn valuetype_from_encoding() { + let encoding = Encoding { + format: Format::Dwarf32, + version: 4, + address_size: 4, + }; + let unit = UnitHeader::new( + encoding, + 7, + UnitType::Compilation, + DebugAbbrevOffset(0), + DebugInfoOffset(0).into(), + EndianSlice::new(&[], LittleEndian), + ); + + let abbrev = Abbreviation::new( + 42, + constants::DW_TAG_base_type, + constants::DW_CHILDREN_no, + vec![ + AttributeSpecification::new( + constants::DW_AT_byte_size, + constants::DW_FORM_udata, + None, + ), + AttributeSpecification::new( + constants::DW_AT_encoding, + constants::DW_FORM_udata, + None, + ), + AttributeSpecification::new( + constants::DW_AT_endianity, + constants::DW_FORM_udata, + None, + ), + ].into(), + ); + + for &(attrs, result) in &[ + ([0x01, constants::DW_ATE_signed.0, constants::DW_END_default.0], ValueType::I8), + ([0x02, constants::DW_ATE_signed.0, constants::DW_END_default.0], ValueType::I16), + ([0x04, constants::DW_ATE_signed.0, constants::DW_END_default.0], ValueType::I32), + ([0x08, constants::DW_ATE_signed.0, constants::DW_END_default.0], ValueType::I64), + ([0x01, constants::DW_ATE_unsigned.0, constants::DW_END_default.0], ValueType::U8), + ([0x02, constants::DW_ATE_unsigned.0, constants::DW_END_default.0], ValueType::U16), + ([0x04, constants::DW_ATE_unsigned.0, constants::DW_END_default.0], ValueType::U32), + ([0x08, constants::DW_ATE_unsigned.0, constants::DW_END_default.0], ValueType::U64), + ([0x04, constants::DW_ATE_float.0, constants::DW_END_default.0], ValueType::F32), + ([0x08, constants::DW_ATE_float.0, constants::DW_END_default.0], ValueType::F64), + ] { + let entry = DebuggingInformationEntry::new( + UnitOffset(0), + EndianSlice::new(&attrs, LittleEndian), + &abbrev, + &unit, + ); + assert_eq!(ValueType::from_entry(&entry), Ok(Some(result))); + } + + for attrs in &[ + [0x03, constants::DW_ATE_signed.0, constants::DW_END_default.0], + [0x02, constants::DW_ATE_signed.0, constants::DW_END_big.0], + ] { + let entry = DebuggingInformationEntry::new( + UnitOffset(0), + EndianSlice::new(attrs, LittleEndian), + &abbrev, + &unit, + ); + assert_eq!(ValueType::from_entry(&entry), Ok(None)); + } + } + + #[test] + fn value_convert() { + let addr_mask = !0 >> 32; + for &(v, t, result) in &[ + (Value::Generic(1), ValueType::I8, Ok(Value::I8(1))), + (Value::I8(1), ValueType::U8, Ok(Value::U8(1))), + (Value::U8(1), ValueType::I16, Ok(Value::I16(1))), + (Value::I16(1), ValueType::U16, Ok(Value::U16(1))), + (Value::U16(1), ValueType::I32, Ok(Value::I32(1))), + (Value::I32(1), ValueType::U32, Ok(Value::U32(1))), + (Value::U32(1), ValueType::F32, Ok(Value::F32(1.))), + (Value::F32(1.), ValueType::I64, Ok(Value::I64(1))), + (Value::I64(1), ValueType::U64, Ok(Value::U64(1))), + (Value::U64(1), ValueType::F64, Ok(Value::F64(1.))), + (Value::F64(1.), ValueType::Generic, Ok(Value::Generic(1))), + ] { + assert_eq!(v.convert(t, addr_mask), result); + } + } + + #[test] + #[rustfmt::skip] + fn value_reinterpret() { + let addr_mask = !0 >> 32; + for &(v, t, result) in &[ + // 8-bit + (Value::I8(-1), ValueType::U8, Ok(Value::U8(0xff))), + (Value::U8(0xff), ValueType::I8, Ok(Value::I8(-1))), + // 16-bit + (Value::I16(1), ValueType::U16, Ok(Value::U16(1))), + (Value::U16(1), ValueType::I16, Ok(Value::I16(1))), + // 32-bit + (Value::Generic(1), ValueType::I32, Ok(Value::I32(1))), + (Value::I32(1), ValueType::U32, Ok(Value::U32(1))), + (Value::U32(0x3f80_0000), ValueType::F32, Ok(Value::F32(1.0))), + (Value::F32(1.0), ValueType::Generic, Ok(Value::Generic(0x3f80_0000))), + // Type mismatches + (Value::Generic(1), ValueType::U8, Err(Error::TypeMismatch)), + (Value::U8(1), ValueType::U16, Err(Error::TypeMismatch)), + (Value::U16(1), ValueType::U32, Err(Error::TypeMismatch)), + (Value::U32(1), ValueType::U64, Err(Error::TypeMismatch)), + (Value::U64(1), ValueType::Generic, Err(Error::TypeMismatch)), + ] { + assert_eq!(v.reinterpret(t, addr_mask), result); + } + + let addr_mask = !0; + for &(v, t, result) in &[ + // 64-bit + (Value::Generic(1), ValueType::I64, Ok(Value::I64(1))), + (Value::I64(1), ValueType::U64, Ok(Value::U64(1))), + (Value::U64(0x3ff0_0000_0000_0000), ValueType::F64, Ok(Value::F64(1.0))), + (Value::F64(1.0), ValueType::Generic, Ok(Value::Generic(0x3ff0_0000_0000_0000))), + ] { + assert_eq!(v.reinterpret(t, addr_mask), result); + } + } + + #[test] + #[rustfmt::skip] + fn value_abs() { + let addr_mask = 0xffff_ffff; + for &(v, result) in &[ + (Value::Generic(0xffff_ffff), Ok(Value::Generic(1))), + (Value::I8(-1), Ok(Value::I8(1))), + (Value::U8(1), Ok(Value::U8(1))), + (Value::I16(-1), Ok(Value::I16(1))), + (Value::U16(1), Ok(Value::U16(1))), + (Value::I32(-1), Ok(Value::I32(1))), + (Value::U32(1), Ok(Value::U32(1))), + (Value::I64(-1), Ok(Value::I64(1))), + (Value::U64(1), Ok(Value::U64(1))), + (Value::F32(-1.), Ok(Value::F32(1.))), + (Value::F64(-1.), Ok(Value::F64(1.))), + ] { + assert_eq!(v.abs(addr_mask), result); + } + } + + #[test] + #[rustfmt::skip] + fn value_neg() { + let addr_mask = 0xffff_ffff; + for &(v, result) in &[ + (Value::Generic(0xffff_ffff), Ok(Value::Generic(1))), + (Value::I8(1), Ok(Value::I8(-1))), + (Value::U8(1), Err(Error::UnsupportedTypeOperation)), + (Value::I16(1), Ok(Value::I16(-1))), + (Value::U16(1), Err(Error::UnsupportedTypeOperation)), + (Value::I32(1), Ok(Value::I32(-1))), + (Value::U32(1), Err(Error::UnsupportedTypeOperation)), + (Value::I64(1), Ok(Value::I64(-1))), + (Value::U64(1), Err(Error::UnsupportedTypeOperation)), + (Value::F32(1.), Ok(Value::F32(-1.))), + (Value::F64(1.), Ok(Value::F64(-1.))), + ] { + assert_eq!(v.neg(addr_mask), result); + } + } + + #[test] + #[rustfmt::skip] + fn value_add() { + let addr_mask = 0xffff_ffff; + for &(v1, v2, result) in &[ + (Value::Generic(1), Value::Generic(2), Ok(Value::Generic(3))), + (Value::I8(-1), Value::I8(2), Ok(Value::I8(1))), + (Value::U8(1), Value::U8(2), Ok(Value::U8(3))), + (Value::I16(-1), Value::I16(2), Ok(Value::I16(1))), + (Value::U16(1), Value::U16(2), Ok(Value::U16(3))), + (Value::I32(-1), Value::I32(2), Ok(Value::I32(1))), + (Value::U32(1), Value::U32(2), Ok(Value::U32(3))), + (Value::I64(-1), Value::I64(2), Ok(Value::I64(1))), + (Value::U64(1), Value::U64(2), Ok(Value::U64(3))), + (Value::F32(-1.), Value::F32(2.), Ok(Value::F32(1.))), + (Value::F64(-1.), Value::F64(2.), Ok(Value::F64(1.))), + (Value::Generic(1), Value::U32(2), Err(Error::TypeMismatch)), + ] { + assert_eq!(v1.add(v2, addr_mask), result); + } + } + + #[test] + #[rustfmt::skip] + fn value_sub() { + let addr_mask = 0xffff_ffff; + for &(v1, v2, result) in &[ + (Value::Generic(3), Value::Generic(2), Ok(Value::Generic(1))), + (Value::I8(-1), Value::I8(2), Ok(Value::I8(-3))), + (Value::U8(3), Value::U8(2), Ok(Value::U8(1))), + (Value::I16(-1), Value::I16(2), Ok(Value::I16(-3))), + (Value::U16(3), Value::U16(2), Ok(Value::U16(1))), + (Value::I32(-1), Value::I32(2), Ok(Value::I32(-3))), + (Value::U32(3), Value::U32(2), Ok(Value::U32(1))), + (Value::I64(-1), Value::I64(2), Ok(Value::I64(-3))), + (Value::U64(3), Value::U64(2), Ok(Value::U64(1))), + (Value::F32(-1.), Value::F32(2.), Ok(Value::F32(-3.))), + (Value::F64(-1.), Value::F64(2.), Ok(Value::F64(-3.))), + (Value::Generic(3), Value::U32(2), Err(Error::TypeMismatch)), + ] { + assert_eq!(v1.sub(v2, addr_mask), result); + } + } + + #[test] + #[rustfmt::skip] + fn value_mul() { + let addr_mask = 0xffff_ffff; + for &(v1, v2, result) in &[ + (Value::Generic(2), Value::Generic(3), Ok(Value::Generic(6))), + (Value::I8(-2), Value::I8(3), Ok(Value::I8(-6))), + (Value::U8(2), Value::U8(3), Ok(Value::U8(6))), + (Value::I16(-2), Value::I16(3), Ok(Value::I16(-6))), + (Value::U16(2), Value::U16(3), Ok(Value::U16(6))), + (Value::I32(-2), Value::I32(3), Ok(Value::I32(-6))), + (Value::U32(2), Value::U32(3), Ok(Value::U32(6))), + (Value::I64(-2), Value::I64(3), Ok(Value::I64(-6))), + (Value::U64(2), Value::U64(3), Ok(Value::U64(6))), + (Value::F32(-2.), Value::F32(3.), Ok(Value::F32(-6.))), + (Value::F64(-2.), Value::F64(3.), Ok(Value::F64(-6.))), + (Value::Generic(2), Value::U32(3), Err(Error::TypeMismatch)), + ] { + assert_eq!(v1.mul(v2, addr_mask), result); + } + } + + #[test] + #[rustfmt::skip] + fn value_div() { + let addr_mask = 0xffff_ffff; + for &(v1, v2, result) in &[ + (Value::Generic(6), Value::Generic(3), Ok(Value::Generic(2))), + (Value::I8(-6), Value::I8(3), Ok(Value::I8(-2))), + (Value::U8(6), Value::U8(3), Ok(Value::U8(2))), + (Value::I16(-6), Value::I16(3), Ok(Value::I16(-2))), + (Value::U16(6), Value::U16(3), Ok(Value::U16(2))), + (Value::I32(-6), Value::I32(3), Ok(Value::I32(-2))), + (Value::U32(6), Value::U32(3), Ok(Value::U32(2))), + (Value::I64(-6), Value::I64(3), Ok(Value::I64(-2))), + (Value::U64(6), Value::U64(3), Ok(Value::U64(2))), + (Value::F32(-6.), Value::F32(3.), Ok(Value::F32(-2.))), + (Value::F64(-6.), Value::F64(3.), Ok(Value::F64(-2.))), + (Value::Generic(6), Value::U32(3), Err(Error::TypeMismatch)), + ] { + assert_eq!(v1.div(v2, addr_mask), result); + } + for &(v1, v2, result) in &[ + (Value::Generic(6), Value::Generic(0), Err(Error::DivisionByZero)), + (Value::I8(-6), Value::I8(0), Err(Error::DivisionByZero)), + (Value::U8(6), Value::U8(0), Err(Error::DivisionByZero)), + (Value::I16(-6), Value::I16(0), Err(Error::DivisionByZero)), + (Value::U16(6), Value::U16(0), Err(Error::DivisionByZero)), + (Value::I32(-6), Value::I32(0), Err(Error::DivisionByZero)), + (Value::U32(6), Value::U32(0), Err(Error::DivisionByZero)), + (Value::I64(-6), Value::I64(0), Err(Error::DivisionByZero)), + (Value::U64(6), Value::U64(0), Err(Error::DivisionByZero)), + (Value::F32(-6.), Value::F32(0.), Ok(Value::F32(-6. / 0.))), + (Value::F64(-6.), Value::F64(0.), Ok(Value::F64(-6. / 0.))), + ] { + assert_eq!(v1.div(v2, addr_mask), result); + } + } + + #[test] + #[rustfmt::skip] + fn value_rem() { + let addr_mask = 0xffff_ffff; + for &(v1, v2, result) in &[ + (Value::Generic(3), Value::Generic(2), Ok(Value::Generic(1))), + (Value::I8(-3), Value::I8(2), Ok(Value::I8(-1))), + (Value::U8(3), Value::U8(2), Ok(Value::U8(1))), + (Value::I16(-3), Value::I16(2), Ok(Value::I16(-1))), + (Value::U16(3), Value::U16(2), Ok(Value::U16(1))), + (Value::I32(-3), Value::I32(2), Ok(Value::I32(-1))), + (Value::U32(3), Value::U32(2), Ok(Value::U32(1))), + (Value::I64(-3), Value::I64(2), Ok(Value::I64(-1))), + (Value::U64(3), Value::U64(2), Ok(Value::U64(1))), + (Value::F32(-3.), Value::F32(2.), Err(Error::IntegralTypeRequired)), + (Value::F64(-3.), Value::F64(2.), Err(Error::IntegralTypeRequired)), + (Value::Generic(3), Value::U32(2), Err(Error::TypeMismatch)), + ] { + assert_eq!(v1.rem(v2, addr_mask), result); + } + for &(v1, v2, result) in &[ + (Value::Generic(3), Value::Generic(0), Err(Error::DivisionByZero)), + (Value::I8(-3), Value::I8(0), Err(Error::DivisionByZero)), + (Value::U8(3), Value::U8(0), Err(Error::DivisionByZero)), + (Value::I16(-3), Value::I16(0), Err(Error::DivisionByZero)), + (Value::U16(3), Value::U16(0), Err(Error::DivisionByZero)), + (Value::I32(-3), Value::I32(0), Err(Error::DivisionByZero)), + (Value::U32(3), Value::U32(0), Err(Error::DivisionByZero)), + (Value::I64(-3), Value::I64(0), Err(Error::DivisionByZero)), + (Value::U64(3), Value::U64(0), Err(Error::DivisionByZero)), + ] { + assert_eq!(v1.rem(v2, addr_mask), result); + } + } + + #[test] + #[rustfmt::skip] + fn value_not() { + let addr_mask = 0xffff_ffff; + for &(v, result) in &[ + (Value::Generic(1), Ok(Value::Generic(!1))), + (Value::I8(1), Ok(Value::I8(!1))), + (Value::U8(1), Ok(Value::U8(!1))), + (Value::I16(1), Ok(Value::I16(!1))), + (Value::U16(1), Ok(Value::U16(!1))), + (Value::I32(1), Ok(Value::I32(!1))), + (Value::U32(1), Ok(Value::U32(!1))), + (Value::I64(1), Ok(Value::I64(!1))), + (Value::U64(1), Ok(Value::U64(!1))), + (Value::F32(1.), Err(Error::IntegralTypeRequired)), + (Value::F64(1.), Err(Error::IntegralTypeRequired)), + ] { + assert_eq!(v.not(addr_mask), result); + } + } + + #[test] + #[rustfmt::skip] + fn value_and() { + let addr_mask = 0xffff_ffff; + for &(v1, v2, result) in &[ + (Value::Generic(3), Value::Generic(5), Ok(Value::Generic(1))), + (Value::I8(3), Value::I8(5), Ok(Value::I8(1))), + (Value::U8(3), Value::U8(5), Ok(Value::U8(1))), + (Value::I16(3), Value::I16(5), Ok(Value::I16(1))), + (Value::U16(3), Value::U16(5), Ok(Value::U16(1))), + (Value::I32(3), Value::I32(5), Ok(Value::I32(1))), + (Value::U32(3), Value::U32(5), Ok(Value::U32(1))), + (Value::I64(3), Value::I64(5), Ok(Value::I64(1))), + (Value::U64(3), Value::U64(5), Ok(Value::U64(1))), + (Value::F32(3.), Value::F32(5.), Err(Error::IntegralTypeRequired)), + (Value::F64(3.), Value::F64(5.), Err(Error::IntegralTypeRequired)), + (Value::Generic(3), Value::U32(5), Err(Error::TypeMismatch)), + ] { + assert_eq!(v1.and(v2, addr_mask), result); + } + } + + #[test] + #[rustfmt::skip] + fn value_or() { + let addr_mask = 0xffff_ffff; + for &(v1, v2, result) in &[ + (Value::Generic(3), Value::Generic(5), Ok(Value::Generic(7))), + (Value::I8(3), Value::I8(5), Ok(Value::I8(7))), + (Value::U8(3), Value::U8(5), Ok(Value::U8(7))), + (Value::I16(3), Value::I16(5), Ok(Value::I16(7))), + (Value::U16(3), Value::U16(5), Ok(Value::U16(7))), + (Value::I32(3), Value::I32(5), Ok(Value::I32(7))), + (Value::U32(3), Value::U32(5), Ok(Value::U32(7))), + (Value::I64(3), Value::I64(5), Ok(Value::I64(7))), + (Value::U64(3), Value::U64(5), Ok(Value::U64(7))), + (Value::F32(3.), Value::F32(5.), Err(Error::IntegralTypeRequired)), + (Value::F64(3.), Value::F64(5.), Err(Error::IntegralTypeRequired)), + (Value::Generic(3), Value::U32(5), Err(Error::TypeMismatch)), + ] { + assert_eq!(v1.or(v2, addr_mask), result); + } + } + + #[test] + #[rustfmt::skip] + fn value_xor() { + let addr_mask = 0xffff_ffff; + for &(v1, v2, result) in &[ + (Value::Generic(3), Value::Generic(5), Ok(Value::Generic(6))), + (Value::I8(3), Value::I8(5), Ok(Value::I8(6))), + (Value::U8(3), Value::U8(5), Ok(Value::U8(6))), + (Value::I16(3), Value::I16(5), Ok(Value::I16(6))), + (Value::U16(3), Value::U16(5), Ok(Value::U16(6))), + (Value::I32(3), Value::I32(5), Ok(Value::I32(6))), + (Value::U32(3), Value::U32(5), Ok(Value::U32(6))), + (Value::I64(3), Value::I64(5), Ok(Value::I64(6))), + (Value::U64(3), Value::U64(5), Ok(Value::U64(6))), + (Value::F32(3.), Value::F32(5.), Err(Error::IntegralTypeRequired)), + (Value::F64(3.), Value::F64(5.), Err(Error::IntegralTypeRequired)), + (Value::Generic(3), Value::U32(5), Err(Error::TypeMismatch)), + ] { + assert_eq!(v1.xor(v2, addr_mask), result); + } + } + + #[test] + #[rustfmt::skip] + fn value_shl() { + let addr_mask = 0xffff_ffff; + for &(v1, v2, result) in &[ + // One of each type + (Value::Generic(3), Value::Generic(5), Ok(Value::Generic(96))), + (Value::I8(3), Value::U8(5), Ok(Value::I8(96))), + (Value::U8(3), Value::I8(5), Ok(Value::U8(96))), + (Value::I16(3), Value::U16(5), Ok(Value::I16(96))), + (Value::U16(3), Value::I16(5), Ok(Value::U16(96))), + (Value::I32(3), Value::U32(5), Ok(Value::I32(96))), + (Value::U32(3), Value::I32(5), Ok(Value::U32(96))), + (Value::I64(3), Value::U64(5), Ok(Value::I64(96))), + (Value::U64(3), Value::I64(5), Ok(Value::U64(96))), + (Value::F32(3.), Value::U8(5), Err(Error::IntegralTypeRequired)), + (Value::F64(3.), Value::U8(5), Err(Error::IntegralTypeRequired)), + // Invalid shifts + (Value::U8(3), Value::I8(-5), Err(Error::InvalidShiftExpression)), + (Value::U8(3), Value::I16(-5), Err(Error::InvalidShiftExpression)), + (Value::U8(3), Value::I32(-5), Err(Error::InvalidShiftExpression)), + (Value::U8(3), Value::I64(-5), Err(Error::InvalidShiftExpression)), + (Value::U8(3), Value::F32(5.), Err(Error::InvalidShiftExpression)), + (Value::U8(3), Value::F64(5.), Err(Error::InvalidShiftExpression)), + // Large shifts + (Value::Generic(3), Value::Generic(32), Ok(Value::Generic(0))), + (Value::I8(3), Value::U8(8), Ok(Value::I8(0))), + (Value::U8(3), Value::I8(9), Ok(Value::U8(0))), + (Value::I16(3), Value::U16(17), Ok(Value::I16(0))), + (Value::U16(3), Value::I16(16), Ok(Value::U16(0))), + (Value::I32(3), Value::U32(32), Ok(Value::I32(0))), + (Value::U32(3), Value::I32(33), Ok(Value::U32(0))), + (Value::I64(3), Value::U64(65), Ok(Value::I64(0))), + (Value::U64(3), Value::I64(64), Ok(Value::U64(0))), + ] { + assert_eq!(v1.shl(v2, addr_mask), result); + } + } + + #[test] + #[rustfmt::skip] + fn value_shr() { + let addr_mask = 0xffff_ffff; + for &(v1, v2, result) in &[ + // One of each type + (Value::Generic(96), Value::Generic(5), Ok(Value::Generic(3))), + (Value::I8(96), Value::U8(5), Err(Error::UnsupportedTypeOperation)), + (Value::U8(96), Value::I8(5), Ok(Value::U8(3))), + (Value::I16(96), Value::U16(5), Err(Error::UnsupportedTypeOperation)), + (Value::U16(96), Value::I16(5), Ok(Value::U16(3))), + (Value::I32(96), Value::U32(5), Err(Error::UnsupportedTypeOperation)), + (Value::U32(96), Value::I32(5), Ok(Value::U32(3))), + (Value::I64(96), Value::U64(5), Err(Error::UnsupportedTypeOperation)), + (Value::U64(96), Value::I64(5), Ok(Value::U64(3))), + (Value::F32(96.), Value::U8(5), Err(Error::IntegralTypeRequired)), + (Value::F64(96.), Value::U8(5), Err(Error::IntegralTypeRequired)), + // Invalid shifts + (Value::U8(96), Value::I8(-5), Err(Error::InvalidShiftExpression)), + (Value::U8(96), Value::I16(-5), Err(Error::InvalidShiftExpression)), + (Value::U8(96), Value::I32(-5), Err(Error::InvalidShiftExpression)), + (Value::U8(96), Value::I64(-5), Err(Error::InvalidShiftExpression)), + (Value::U8(96), Value::F32(5.), Err(Error::InvalidShiftExpression)), + (Value::U8(96), Value::F64(5.), Err(Error::InvalidShiftExpression)), + // Large shifts + (Value::Generic(96), Value::Generic(32), Ok(Value::Generic(0))), + (Value::U8(96), Value::I8(9), Ok(Value::U8(0))), + (Value::U16(96), Value::I16(16), Ok(Value::U16(0))), + (Value::U32(96), Value::I32(33), Ok(Value::U32(0))), + (Value::U64(96), Value::I64(64), Ok(Value::U64(0))), + ] { + assert_eq!(v1.shr(v2, addr_mask), result); + } + } + + #[test] + #[rustfmt::skip] + fn value_shra() { + let addr_mask = 0xffff_ffff; + for &(v1, v2, result) in &[ + // One of each type + (Value::Generic(u64::from(-96i32 as u32)), Value::Generic(5), Ok(Value::Generic(-3i64 as u64))), + (Value::I8(-96), Value::U8(5), Ok(Value::I8(-3))), + (Value::U8(96), Value::I8(5), Err(Error::UnsupportedTypeOperation)), + (Value::I16(-96), Value::U16(5), Ok(Value::I16(-3))), + (Value::U16(96), Value::I16(5), Err(Error::UnsupportedTypeOperation)), + (Value::I32(-96), Value::U32(5), Ok(Value::I32(-3))), + (Value::U32(96), Value::I32(5), Err(Error::UnsupportedTypeOperation)), + (Value::I64(-96), Value::U64(5), Ok(Value::I64(-3))), + (Value::U64(96), Value::I64(5), Err(Error::UnsupportedTypeOperation)), + (Value::F32(96.), Value::U8(5), Err(Error::IntegralTypeRequired)), + (Value::F64(96.), Value::U8(5), Err(Error::IntegralTypeRequired)), + // Invalid shifts + (Value::U8(96), Value::I8(-5), Err(Error::InvalidShiftExpression)), + (Value::U8(96), Value::I16(-5), Err(Error::InvalidShiftExpression)), + (Value::U8(96), Value::I32(-5), Err(Error::InvalidShiftExpression)), + (Value::U8(96), Value::I64(-5), Err(Error::InvalidShiftExpression)), + (Value::U8(96), Value::F32(5.), Err(Error::InvalidShiftExpression)), + (Value::U8(96), Value::F64(5.), Err(Error::InvalidShiftExpression)), + // Large shifts + (Value::Generic(96), Value::Generic(32), Ok(Value::Generic(0))), + (Value::I8(96), Value::U8(8), Ok(Value::I8(0))), + (Value::I8(-96), Value::U8(8), Ok(Value::I8(-1))), + (Value::I16(96), Value::U16(17), Ok(Value::I16(0))), + (Value::I16(-96), Value::U16(17), Ok(Value::I16(-1))), + (Value::I32(96), Value::U32(32), Ok(Value::I32(0))), + (Value::I32(-96), Value::U32(32), Ok(Value::I32(-1))), + (Value::I64(96), Value::U64(65), Ok(Value::I64(0))), + (Value::I64(-96), Value::U64(65), Ok(Value::I64(-1))), + ] { + assert_eq!(v1.shra(v2, addr_mask), result); + } + } + + #[test] + fn value_eq() { + let addr_mask = 0xffff_ffff; + for &(v1, v2, result) in &[ + (Value::Generic(3), Value::Generic(3), Ok(Value::Generic(1))), + (Value::Generic(!3), Value::Generic(3), Ok(Value::Generic(0))), + (Value::I8(3), Value::I8(3), Ok(Value::Generic(1))), + (Value::I8(!3), Value::I8(3), Ok(Value::Generic(0))), + (Value::U8(3), Value::U8(3), Ok(Value::Generic(1))), + (Value::U8(!3), Value::U8(3), Ok(Value::Generic(0))), + (Value::I16(3), Value::I16(3), Ok(Value::Generic(1))), + (Value::I16(!3), Value::I16(3), Ok(Value::Generic(0))), + (Value::U16(3), Value::U16(3), Ok(Value::Generic(1))), + (Value::U16(!3), Value::U16(3), Ok(Value::Generic(0))), + (Value::I32(3), Value::I32(3), Ok(Value::Generic(1))), + (Value::I32(!3), Value::I32(3), Ok(Value::Generic(0))), + (Value::U32(3), Value::U32(3), Ok(Value::Generic(1))), + (Value::U32(!3), Value::U32(3), Ok(Value::Generic(0))), + (Value::I64(3), Value::I64(3), Ok(Value::Generic(1))), + (Value::I64(!3), Value::I64(3), Ok(Value::Generic(0))), + (Value::U64(3), Value::U64(3), Ok(Value::Generic(1))), + (Value::U64(!3), Value::U64(3), Ok(Value::Generic(0))), + (Value::F32(3.), Value::F32(3.), Ok(Value::Generic(1))), + (Value::F32(-3.), Value::F32(3.), Ok(Value::Generic(0))), + (Value::F64(3.), Value::F64(3.), Ok(Value::Generic(1))), + (Value::F64(-3.), Value::F64(3.), Ok(Value::Generic(0))), + (Value::Generic(3), Value::U32(3), Err(Error::TypeMismatch)), + ] { + assert_eq!(v1.eq(v2, addr_mask), result); + } + } + + #[test] + fn value_ne() { + let addr_mask = 0xffff_ffff; + for &(v1, v2, result) in &[ + (Value::Generic(3), Value::Generic(3), Ok(Value::Generic(0))), + (Value::Generic(!3), Value::Generic(3), Ok(Value::Generic(1))), + (Value::I8(3), Value::I8(3), Ok(Value::Generic(0))), + (Value::I8(!3), Value::I8(3), Ok(Value::Generic(1))), + (Value::U8(3), Value::U8(3), Ok(Value::Generic(0))), + (Value::U8(!3), Value::U8(3), Ok(Value::Generic(1))), + (Value::I16(3), Value::I16(3), Ok(Value::Generic(0))), + (Value::I16(!3), Value::I16(3), Ok(Value::Generic(1))), + (Value::U16(3), Value::U16(3), Ok(Value::Generic(0))), + (Value::U16(!3), Value::U16(3), Ok(Value::Generic(1))), + (Value::I32(3), Value::I32(3), Ok(Value::Generic(0))), + (Value::I32(!3), Value::I32(3), Ok(Value::Generic(1))), + (Value::U32(3), Value::U32(3), Ok(Value::Generic(0))), + (Value::U32(!3), Value::U32(3), Ok(Value::Generic(1))), + (Value::I64(3), Value::I64(3), Ok(Value::Generic(0))), + (Value::I64(!3), Value::I64(3), Ok(Value::Generic(1))), + (Value::U64(3), Value::U64(3), Ok(Value::Generic(0))), + (Value::U64(!3), Value::U64(3), Ok(Value::Generic(1))), + (Value::F32(3.), Value::F32(3.), Ok(Value::Generic(0))), + (Value::F32(-3.), Value::F32(3.), Ok(Value::Generic(1))), + (Value::F64(3.), Value::F64(3.), Ok(Value::Generic(0))), + (Value::F64(-3.), Value::F64(3.), Ok(Value::Generic(1))), + (Value::Generic(3), Value::U32(3), Err(Error::TypeMismatch)), + ] { + assert_eq!(v1.ne(v2, addr_mask), result); + } + } + + #[test] + fn value_ge() { + let addr_mask = 0xffff_ffff; + for &(v1, v2, result) in &[ + (Value::Generic(3), Value::Generic(!3), Ok(Value::Generic(1))), + (Value::Generic(!3), Value::Generic(3), Ok(Value::Generic(0))), + (Value::I8(3), Value::I8(!3), Ok(Value::Generic(1))), + (Value::I8(!3), Value::I8(3), Ok(Value::Generic(0))), + (Value::U8(3), Value::U8(!3), Ok(Value::Generic(0))), + (Value::U8(!3), Value::U8(3), Ok(Value::Generic(1))), + (Value::I16(3), Value::I16(!3), Ok(Value::Generic(1))), + (Value::I16(!3), Value::I16(3), Ok(Value::Generic(0))), + (Value::U16(3), Value::U16(!3), Ok(Value::Generic(0))), + (Value::U16(!3), Value::U16(3), Ok(Value::Generic(1))), + (Value::I32(3), Value::I32(!3), Ok(Value::Generic(1))), + (Value::I32(!3), Value::I32(3), Ok(Value::Generic(0))), + (Value::U32(3), Value::U32(!3), Ok(Value::Generic(0))), + (Value::U32(!3), Value::U32(3), Ok(Value::Generic(1))), + (Value::I64(3), Value::I64(!3), Ok(Value::Generic(1))), + (Value::I64(!3), Value::I64(3), Ok(Value::Generic(0))), + (Value::U64(3), Value::U64(!3), Ok(Value::Generic(0))), + (Value::U64(!3), Value::U64(3), Ok(Value::Generic(1))), + (Value::F32(3.), Value::F32(-3.), Ok(Value::Generic(1))), + (Value::F32(-3.), Value::F32(3.), Ok(Value::Generic(0))), + (Value::F64(3.), Value::F64(-3.), Ok(Value::Generic(1))), + (Value::F64(-3.), Value::F64(3.), Ok(Value::Generic(0))), + (Value::Generic(3), Value::U32(3), Err(Error::TypeMismatch)), + ] { + assert_eq!(v1.ge(v2, addr_mask), result); + } + } + + #[test] + fn value_gt() { + let addr_mask = 0xffff_ffff; + for &(v1, v2, result) in &[ + (Value::Generic(3), Value::Generic(!3), Ok(Value::Generic(1))), + (Value::Generic(!3), Value::Generic(3), Ok(Value::Generic(0))), + (Value::I8(3), Value::I8(!3), Ok(Value::Generic(1))), + (Value::I8(!3), Value::I8(3), Ok(Value::Generic(0))), + (Value::U8(3), Value::U8(!3), Ok(Value::Generic(0))), + (Value::U8(!3), Value::U8(3), Ok(Value::Generic(1))), + (Value::I16(3), Value::I16(!3), Ok(Value::Generic(1))), + (Value::I16(!3), Value::I16(3), Ok(Value::Generic(0))), + (Value::U16(3), Value::U16(!3), Ok(Value::Generic(0))), + (Value::U16(!3), Value::U16(3), Ok(Value::Generic(1))), + (Value::I32(3), Value::I32(!3), Ok(Value::Generic(1))), + (Value::I32(!3), Value::I32(3), Ok(Value::Generic(0))), + (Value::U32(3), Value::U32(!3), Ok(Value::Generic(0))), + (Value::U32(!3), Value::U32(3), Ok(Value::Generic(1))), + (Value::I64(3), Value::I64(!3), Ok(Value::Generic(1))), + (Value::I64(!3), Value::I64(3), Ok(Value::Generic(0))), + (Value::U64(3), Value::U64(!3), Ok(Value::Generic(0))), + (Value::U64(!3), Value::U64(3), Ok(Value::Generic(1))), + (Value::F32(3.), Value::F32(-3.), Ok(Value::Generic(1))), + (Value::F32(-3.), Value::F32(3.), Ok(Value::Generic(0))), + (Value::F64(3.), Value::F64(-3.), Ok(Value::Generic(1))), + (Value::F64(-3.), Value::F64(3.), Ok(Value::Generic(0))), + (Value::Generic(3), Value::U32(3), Err(Error::TypeMismatch)), + ] { + assert_eq!(v1.gt(v2, addr_mask), result); + } + } + + #[test] + fn value_le() { + let addr_mask = 0xffff_ffff; + for &(v1, v2, result) in &[ + (Value::Generic(3), Value::Generic(!3), Ok(Value::Generic(0))), + (Value::Generic(!3), Value::Generic(3), Ok(Value::Generic(1))), + (Value::I8(3), Value::I8(!3), Ok(Value::Generic(0))), + (Value::I8(!3), Value::I8(3), Ok(Value::Generic(1))), + (Value::U8(3), Value::U8(!3), Ok(Value::Generic(1))), + (Value::U8(!3), Value::U8(3), Ok(Value::Generic(0))), + (Value::I16(3), Value::I16(!3), Ok(Value::Generic(0))), + (Value::I16(!3), Value::I16(3), Ok(Value::Generic(1))), + (Value::U16(3), Value::U16(!3), Ok(Value::Generic(1))), + (Value::U16(!3), Value::U16(3), Ok(Value::Generic(0))), + (Value::I32(3), Value::I32(!3), Ok(Value::Generic(0))), + (Value::I32(!3), Value::I32(3), Ok(Value::Generic(1))), + (Value::U32(3), Value::U32(!3), Ok(Value::Generic(1))), + (Value::U32(!3), Value::U32(3), Ok(Value::Generic(0))), + (Value::I64(3), Value::I64(!3), Ok(Value::Generic(0))), + (Value::I64(!3), Value::I64(3), Ok(Value::Generic(1))), + (Value::U64(3), Value::U64(!3), Ok(Value::Generic(1))), + (Value::U64(!3), Value::U64(3), Ok(Value::Generic(0))), + (Value::F32(3.), Value::F32(-3.), Ok(Value::Generic(0))), + (Value::F32(-3.), Value::F32(3.), Ok(Value::Generic(1))), + (Value::F64(3.), Value::F64(-3.), Ok(Value::Generic(0))), + (Value::F64(-3.), Value::F64(3.), Ok(Value::Generic(1))), + (Value::Generic(3), Value::U32(3), Err(Error::TypeMismatch)), + ] { + assert_eq!(v1.le(v2, addr_mask), result); + } + } + + #[test] + fn value_lt() { + let addr_mask = 0xffff_ffff; + for &(v1, v2, result) in &[ + (Value::Generic(3), Value::Generic(!3), Ok(Value::Generic(0))), + (Value::Generic(!3), Value::Generic(3), Ok(Value::Generic(1))), + (Value::I8(3), Value::I8(!3), Ok(Value::Generic(0))), + (Value::I8(!3), Value::I8(3), Ok(Value::Generic(1))), + (Value::U8(3), Value::U8(!3), Ok(Value::Generic(1))), + (Value::U8(!3), Value::U8(3), Ok(Value::Generic(0))), + (Value::I16(3), Value::I16(!3), Ok(Value::Generic(0))), + (Value::I16(!3), Value::I16(3), Ok(Value::Generic(1))), + (Value::U16(3), Value::U16(!3), Ok(Value::Generic(1))), + (Value::U16(!3), Value::U16(3), Ok(Value::Generic(0))), + (Value::I32(3), Value::I32(!3), Ok(Value::Generic(0))), + (Value::I32(!3), Value::I32(3), Ok(Value::Generic(1))), + (Value::U32(3), Value::U32(!3), Ok(Value::Generic(1))), + (Value::U32(!3), Value::U32(3), Ok(Value::Generic(0))), + (Value::I64(3), Value::I64(!3), Ok(Value::Generic(0))), + (Value::I64(!3), Value::I64(3), Ok(Value::Generic(1))), + (Value::U64(3), Value::U64(!3), Ok(Value::Generic(1))), + (Value::U64(!3), Value::U64(3), Ok(Value::Generic(0))), + (Value::F32(3.), Value::F32(-3.), Ok(Value::Generic(0))), + (Value::F32(-3.), Value::F32(3.), Ok(Value::Generic(1))), + (Value::F64(3.), Value::F64(-3.), Ok(Value::Generic(0))), + (Value::F64(-3.), Value::F64(3.), Ok(Value::Generic(1))), + (Value::Generic(3), Value::U32(3), Err(Error::TypeMismatch)), + ] { + assert_eq!(v1.lt(v2, addr_mask), result); + } + } +} |