pub enum Value {
Generic(u64),
I8(i8),
U8(u8),
I16(i16),
U16(u16),
I32(i32),
U32(u32),
I64(i64),
U64(u64),
F32(f32),
F64(f64),
}
Expand description
The value of an entry on the DWARF stack.
Variants§
Generic(u64)
A generic value, which is address-sized and of unspecified sign.
I8(i8)
A signed 8-bit integer value.
U8(u8)
An unsigned 8-bit integer value.
I16(i16)
A signed 16-bit integer value.
U16(u16)
An unsigned 16-bit integer value.
I32(i32)
A signed 32-bit integer value.
U32(u32)
An unsigned 32-bit integer value.
I64(i64)
A signed 64-bit integer value.
U64(u64)
An unsigned 64-bit integer value.
F32(f32)
A 32-bit floating point value.
F64(f64)
A 64-bit floating point value.
Implementations§
source§impl Value
impl Value
sourcepub fn value_type(&self) -> ValueType
pub fn value_type(&self) -> ValueType
Return the ValueType
corresponding to this Value
.
sourcepub fn parse<R: Reader>(value_type: ValueType, bytes: R) -> Result<Value>
pub fn parse<R: Reader>(value_type: ValueType, bytes: R) -> Result<Value>
Read a Value
with the given value_type
from a Reader
.
sourcepub fn to_u64(self, addr_mask: u64) -> Result<u64>
pub fn to_u64(self, addr_mask: u64) -> Result<u64>
Convert a Value
to a u64
.
The ValueType
of self
must be integral.
Values are sign extended if the source value is signed.
sourcepub fn from_u64(value_type: ValueType, value: u64) -> Result<Value>
pub fn from_u64(value_type: ValueType, value: u64) -> Result<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
.
sourcepub fn convert(self, value_type: ValueType, addr_mask: u64) -> Result<Value>
pub fn convert(self, value_type: ValueType, addr_mask: u64) -> Result<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.
sourcepub fn reinterpret(self, value_type: ValueType, addr_mask: u64) -> Result<Value>
pub fn reinterpret(self, value_type: ValueType, addr_mask: u64) -> Result<Value>
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.
sourcepub fn abs(self, addr_mask: u64) -> Result<Value>
pub fn abs(self, addr_mask: u64) -> Result<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.
sourcepub fn neg(self, addr_mask: u64) -> Result<Value>
pub fn neg(self, addr_mask: u64) -> Result<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.
sourcepub fn add(self, rhs: Value, addr_mask: u64) -> Result<Value>
pub fn add(self, rhs: Value, addr_mask: u64) -> Result<Value>
Perform an addition operation.
This operation requires matching types.
This corresponds to the DWARF DW_OP_plus
operation.
sourcepub fn sub(self, rhs: Value, addr_mask: u64) -> Result<Value>
pub fn sub(self, rhs: Value, addr_mask: u64) -> Result<Value>
Perform a subtraction operation.
This operation requires matching types.
This corresponds to the DWARF DW_OP_minus
operation.
sourcepub fn mul(self, rhs: Value, addr_mask: u64) -> Result<Value>
pub fn mul(self, rhs: Value, addr_mask: u64) -> Result<Value>
Perform a multiplication operation.
This operation requires matching types.
This corresponds to the DWARF DW_OP_mul
operation.
sourcepub fn div(self, rhs: Value, addr_mask: u64) -> Result<Value>
pub fn div(self, rhs: Value, addr_mask: u64) -> Result<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.
sourcepub fn rem(self, rhs: Value, addr_mask: u64) -> Result<Value>
pub fn rem(self, rhs: Value, addr_mask: u64) -> Result<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.
sourcepub fn not(self, addr_mask: u64) -> Result<Value>
pub fn not(self, addr_mask: u64) -> Result<Value>
Perform a bitwise not operation.
This operation requires matching integral types.
This corresponds to the DWARF DW_OP_not
operation.
sourcepub fn and(self, rhs: Value, addr_mask: u64) -> Result<Value>
pub fn and(self, rhs: Value, addr_mask: u64) -> Result<Value>
Perform a bitwise and operation.
This operation requires matching integral types.
This corresponds to the DWARF DW_OP_and
operation.
sourcepub fn or(self, rhs: Value, addr_mask: u64) -> Result<Value>
pub fn or(self, rhs: Value, addr_mask: u64) -> Result<Value>
Perform a bitwise or operation.
This operation requires matching integral types.
This corresponds to the DWARF DW_OP_or
operation.
sourcepub fn xor(self, rhs: Value, addr_mask: u64) -> Result<Value>
pub fn xor(self, rhs: Value, addr_mask: u64) -> Result<Value>
Perform a bitwise exclusive-or operation.
This operation requires matching integral types.
This corresponds to the DWARF DW_OP_xor
operation.
sourcepub fn shl(self, rhs: Value, addr_mask: u64) -> Result<Value>
pub fn shl(self, rhs: Value, addr_mask: u64) -> Result<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.
sourcepub fn shr(self, rhs: Value, addr_mask: u64) -> Result<Value>
pub fn shr(self, rhs: Value, addr_mask: u64) -> Result<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.
sourcepub fn shra(self, rhs: Value, addr_mask: u64) -> Result<Value>
pub fn shra(self, rhs: Value, addr_mask: u64) -> Result<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.
sourcepub fn eq(self, rhs: Value, addr_mask: u64) -> Result<Value>
pub fn eq(self, rhs: Value, addr_mask: u64) -> Result<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.
sourcepub fn ge(self, rhs: Value, addr_mask: u64) -> Result<Value>
pub fn ge(self, rhs: Value, addr_mask: u64) -> Result<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_ge
operation.
sourcepub fn gt(self, rhs: Value, addr_mask: u64) -> Result<Value>
pub fn gt(self, rhs: Value, addr_mask: u64) -> Result<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_gt
operation.
sourcepub fn le(self, rhs: Value, addr_mask: u64) -> Result<Value>
pub fn le(self, rhs: Value, addr_mask: u64) -> Result<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_le
operation.
Trait Implementations§
impl Copy for Value
impl StructuralPartialEq for Value
Auto Trait Implementations§
impl Freeze for Value
impl RefUnwindSafe for Value
impl Send for Value
impl Sync for Value
impl Unpin for Value
impl UnwindSafe for Value
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
clone_to_uninit
)