Enum gimli::read::Operation[−][src]

pub enum Operation<R, Offset = <R as Reader>::Offset> where
    R: Reader<Offset = Offset>,
    Offset: ReaderOffset,  {
Show 53 variants    Deref {
        base_type: UnitOffset<Offset>,
        size: u8,
        space: bool,
    },
    Drop,
    Pick {
        index: u8,
    },
    Swap,
    Rot,
    Abs,
    And,
    Div,
    Minus,
    Mod,
    Mul,
    Neg,
    Not,
    Or,
    Plus,
    PlusConstant {
        value: u64,
    },
    Shl,
    Shr,
    Shra,
    Xor,
    Bra {
        target: i16,
    },
    Eq,
    Ge,
    Gt,
    Le,
    Lt,
    Ne,
    Skip {
        target: i16,
    },
    UnsignedConstant {
        value: u64,
    },
    SignedConstant {
        value: i64,
    },
    Register {
        register: Register,
    },
    RegisterOffset {
        register: Register,
        offset: i64,
        base_type: UnitOffset<Offset>,
    },
    FrameOffset {
        offset: i64,
    },
    Nop,
    PushObjectAddress,
    Call {
        offset: DieReference<Offset>,
    },
    TLS,
    CallFrameCFA,
    Piece {
        size_in_bits: u64,
        bit_offset: Option<u64>,
    },
    ImplicitValue {
        data: R,
    },
    StackValue,
    ImplicitPointer {
        value: DebugInfoOffset<Offset>,
        byte_offset: i64,
    },
    EntryValue {
        expression: R,
    },
    ParameterRef {
        offset: UnitOffset<Offset>,
    },
    Address {
        address: u64,
    },
    AddressIndex {
        index: DebugAddrIndex<Offset>,
    },
    ConstantIndex {
        index: DebugAddrIndex<Offset>,
    },
    TypedLiteral {
        base_type: UnitOffset<Offset>,
        value: R,
    },
    Convert {
        base_type: UnitOffset<Offset>,
    },
    Reinterpret {
        base_type: UnitOffset<Offset>,
    },
    WasmLocal {
        index: u32,
    },
    WasmGlobal {
        index: u32,
    },
    WasmStack {
        index: u32,
    },
}

Expand description

A single decoded DWARF expression operation.

DWARF expression evaluation is done in two parts: first the raw bytes of the next part of the expression are decoded; and then the decoded operation is evaluated. This approach lets other consumers inspect the DWARF expression without reimplementing the decoding operation.

Multiple DWARF opcodes may decode into a single Operation. For example, both DW_OP_deref and DW_OP_xderef are represented using Operation::Deref.

Variants

Deref

Dereference the topmost value of the stack.

Fields of Deref

base_type: UnitOffset<Offset>

The DIE of the base type or 0 to indicate the generic type

size: u8

The size of the data to dereference.

space: bool

True if the dereference operation takes an address space argument from the stack; false otherwise.

Drop

Drop an item from the stack.

Pick

Pick an item from the stack and push it on top of the stack. This operation handles DW_OP_pick, DW_OP_dup, and DW_OP_over.

Fields of Pick

index: u8

The index, from the top of the stack, of the item to copy.

Swap

Swap the top two stack items.

Rot

Rotate the top three stack items.

Abs

Take the absolute value of the top of the stack.

And

Bitwise and of the top two values on the stack.

Div

Divide the top two values on the stack.

Minus

Subtract the top two values on the stack.

Mod

Modulus of the top two values on the stack.

Mul

Multiply the top two values on the stack.

Neg

Negate the top of the stack.

Not

Bitwise not of the top of the stack.

Or

Bitwise or of the top two values on the stack.

Plus

Add the top two values on the stack.

PlusConstant

Add a constant to the topmost value on the stack.

Fields of PlusConstant

value: u64

The value to add.

Shl

Logical left shift of the 2nd value on the stack by the number of bits given by the topmost value on the stack.

Shr

Right shift of the 2nd value on the stack by the number of bits given by the topmost value on the stack.

Shra

Arithmetic left shift of the 2nd value on the stack by the number of bits given by the topmost value on the stack.

Xor

Bitwise xor of the top two values on the stack.

Bra

Branch to the target location if the top of stack is nonzero.

Fields of Bra

target: i16

The relative offset to the target bytecode.

Eq

Compare the top two stack values for equality.

Ge

Compare the top two stack values using >=.

Gt

Compare the top two stack values using >.

Le

Compare the top two stack values using <=.

Lt

Compare the top two stack values using <.

Ne

Compare the top two stack values using !=.

Skip

Unconditional branch to the target location.

Fields of Skip

target: i16

The relative offset to the target bytecode.

UnsignedConstant

Push an unsigned constant value on the stack. This handles multiple DWARF opcodes.

Fields of UnsignedConstant

value: u64

The value to push.

SignedConstant

Push a signed constant value on the stack. This handles multiple DWARF opcodes.

Fields of SignedConstant

value: i64

The value to push.

Register

Indicate that this piece’s location is in the given register.

Completes the piece or expression.

Fields of Register

register: Register

The register number.

RegisterOffset

Find the value of the given register, add the offset, and then push the resulting sum on the stack.

Fields of RegisterOffset

register: Register

The register number.

offset: i64

The offset to add.

base_type: UnitOffset<Offset>

The DIE of the base type or 0 to indicate the generic type

FrameOffset

Compute the frame base (using DW_AT_frame_base), add the given offset, and then push the resulting sum on the stack.

Fields of FrameOffset

offset: i64

The offset to add.

Nop

No operation.

PushObjectAddress

Push the object address on the stack.

Call

Evaluate a DWARF expression as a subroutine. The expression comes from the DW_AT_location attribute of the indicated DIE.

Fields of Call

offset: DieReference<Offset>

The DIE to use.

TLS

Compute the address of a thread-local variable and push it on the stack.

CallFrameCFA

Compute the call frame CFA and push it on the stack.

Piece

Terminate a piece.

Fields of Piece

size_in_bits: u64

The size of this piece in bits.

bit_offset: Option<u64>

The bit offset of this piece. If None, then this piece was specified using DW_OP_piece and should start at the next byte boundary.

ImplicitValue

The object has no location, but has a known constant value.

Represents DW_OP_implicit_value. Completes the piece or expression.

Fields of ImplicitValue

data: R

The implicit value to use.

StackValue

The object has no location, but its value is at the top of the stack.

Represents DW_OP_stack_value. Completes the piece or expression.

ImplicitPointer

The object is a pointer to a value which has no actual location, such as an implicit value or a stack value.

Represents DW_OP_implicit_pointer. Completes the piece or expression.

Fields of ImplicitPointer

value: DebugInfoOffset<Offset>

The .debug_info offset of the value that this is an implicit pointer into.

byte_offset: i64

The byte offset into the value that the implicit pointer points to.

EntryValue

Evaluate an expression at the entry to the current subprogram, and push it on the stack.

Represents DW_OP_entry_value.

Fields of EntryValue

expression: R

The expression to be evaluated.

ParameterRef

This represents a parameter that was optimized out.

The offset points to the definition of the parameter, and is matched to the DW_TAG_GNU_call_site_parameter in the caller that also points to the same definition of the parameter.

Represents DW_OP_GNU_parameter_ref.

Fields of ParameterRef

offset: UnitOffset<Offset>

The DIE to use.

Address

Relocate the address if needed, and push it on the stack.

Represents DW_OP_addr.

Fields of Address

address: u64

The offset to add.

AddressIndex

Read the address at the given index in `.debug_addr, relocate the address if needed, and push it on the stack.

Represents DW_OP_addrx.

Fields of AddressIndex

index: DebugAddrIndex<Offset>

The index of the address in .debug_addr.

ConstantIndex

Read the address at the given index in `.debug_addr, and push it on the stack. Do not relocate the address.

Represents DW_OP_constx.

Fields of ConstantIndex

index: DebugAddrIndex<Offset>

The index of the address in .debug_addr.

TypedLiteral

Interpret the value bytes as a constant of a given type, and push it on the stack.

Represents DW_OP_const_type.

Fields of TypedLiteral

base_type: UnitOffset<Offset>

The DIE of the base type.

value: R

The value bytes.

Convert

Pop the top stack entry, convert it to a different type, and push it on the stack.

Represents DW_OP_convert.

Fields of Convert

base_type: UnitOffset<Offset>

The DIE of the base type.

Reinterpret

Pop the top stack entry, reinterpret the bits in its value as a different type, and push it on the stack.

Represents DW_OP_reinterpret.

Fields of Reinterpret

base_type: UnitOffset<Offset>

The DIE of the base type.

WasmLocal

The index of a local in the currently executing function.

Represents DW_OP_WASM_location 0x00. Completes the piece or expression.

Fields of WasmLocal

index: u32

The index of the local.

WasmGlobal

The index of a global.

Represents DW_OP_WASM_location 0x01 or DW_OP_WASM_location 0x03. Completes the piece or expression.

Fields of WasmGlobal

index: u32

The index of the global.

WasmStack

The index of an item on the operand stack.

Represents DW_OP_WASM_location 0x02. Completes the piece or expression.

Fields of WasmStack

index: u32

The index of the stack item. 0 is the bottom of the operand stack.

Implementations

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impl<R, Offset> Operation<R, Offset> where
R: Reader<Offset = Offset>,
Offset: ReaderOffset,

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pub fn parse(bytes: &mut R, encoding: Encoding) -> Result<Operation<R, Offset>>

Parse a single DWARF expression operation.

This is useful when examining a DWARF expression for reasons other than direct evaluation.

bytes points to a the operation to decode. It should point into the same array as bytecode, which should be the entire expression.

Trait Implementations

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impl<R: Clone, Offset: Clone> Clone for Operation<R, Offset> where
R: Reader<Offset = Offset>,
Offset: ReaderOffset,

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fn clone(&self) -> Operation<R, Offset>

Returns a copy of the value. Read more

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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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impl<R: Debug, Offset: Debug> Debug for Operation<R, Offset> where
R: Reader<Offset = Offset>,
Offset: ReaderOffset,

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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impl<R: PartialEq, Offset: PartialEq> PartialEq<Operation<R, Offset>> for Operation<R, Offset> where
R: Reader<Offset = Offset>,
Offset: ReaderOffset,

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fn eq(&self, other: &Operation<R, Offset>) -> bool

This method tests for self and other values to be equal, and is used by ==. Read more

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fn ne(&self, other: &Operation<R, Offset>) -> bool

This method tests for !=.

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impl<R: Copy, Offset: Copy> Copy for Operation<R, Offset> where
R: Reader<Offset = Offset>,
Offset: ReaderOffset,

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impl<R: Eq, Offset: Eq> Eq for Operation<R, Offset> where
R: Reader<Offset = Offset>,
Offset: ReaderOffset,

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impl<R, Offset> StructuralEq for Operation<R, Offset> where
R: Reader<Offset = Offset>,
Offset: ReaderOffset,

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impl<R, Offset> StructuralPartialEq for Operation<R, Offset> where
R: Reader<Offset = Offset>,
Offset: ReaderOffset,

Auto Trait Implementations

impl<R, Offset> RefUnwindSafe for Operation<R, Offset> where
Offset: RefUnwindSafe,
R: RefUnwindSafe,

impl<R, Offset> Send for Operation<R, Offset> where
Offset: Send,
R: Send,

impl<R, Offset> Sync for Operation<R, Offset> where
Offset: Sync,
R: Sync,

impl<R, Offset> Unpin for Operation<R, Offset> where
Offset: Unpin,
R: Unpin,

impl<R, Offset> UnwindSafe for Operation<R, Offset> where
Offset: UnwindSafe,
R: UnwindSafe,

Blanket Implementations

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impl<T> Any for T where
T: 'static + ?Sized,

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pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T where
T: ?Sized,

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pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T where
T: ?Sized,

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pub fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<Q, K> Equivalent<K> for Q where
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,

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pub fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.

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impl<T> From<T> for T

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pub fn from(t: T) -> T

Performs the conversion.

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impl<T, U> Into for T where
U: From<T>,

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pub fn into(self) -> U

Performs the conversion.

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impl<T> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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pub fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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pub fn clone_into(&self, target: &mut T)

🔬 This is a nightly-only experimental API. (toowned_clone_into)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

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impl<T, U> TryFrom for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

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pub fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

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pub fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Enum gimli::read::Operation[−][src]

Variants

Fields of Deref

Fields of Pick

Fields of PlusConstant

Fields of Bra

Fields of Skip

Fields of UnsignedConstant

Fields of SignedConstant

Fields of Register

Fields of RegisterOffset

Fields of FrameOffset

Fields of Call

Fields of Piece

Fields of ImplicitValue

Fields of ImplicitPointer

Fields of EntryValue

Fields of ParameterRef

Fields of Address

Fields of AddressIndex

Fields of ConstantIndex

Fields of TypedLiteral

Fields of Convert

Fields of Reinterpret

Fields of WasmLocal

Fields of WasmGlobal

Fields of WasmStack

Implementations

impl<R, Offset> Operation<R, Offset> where R: Reader<Offset = Offset>, Offset: ReaderOffset,

pub fn parse(bytes: &mut R, encoding: Encoding) -> Result<Operation<R, Offset>>

Trait Implementations

impl<R: Clone, Offset: Clone> Clone for Operation<R, Offset> where R: Reader<Offset = Offset>, Offset: ReaderOffset,

fn clone(&self) -> Operation<R, Offset>

fn clone_from(&mut self, source: &Self)

impl<R: Debug, Offset: Debug> Debug for Operation<R, Offset> where R: Reader<Offset = Offset>, Offset: ReaderOffset,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

impl<R: PartialEq, Offset: PartialEq> PartialEq<Operation<R, Offset>> for Operation<R, Offset> where R: Reader<Offset = Offset>, Offset: ReaderOffset,

fn eq(&self, other: &Operation<R, Offset>) -> bool

fn ne(&self, other: &Operation<R, Offset>) -> bool

impl<R: Copy, Offset: Copy> Copy for Operation<R, Offset> where R: Reader<Offset = Offset>, Offset: ReaderOffset,

impl<R: Eq, Offset: Eq> Eq for Operation<R, Offset> where R: Reader<Offset = Offset>, Offset: ReaderOffset,

impl<R, Offset> StructuralEq for Operation<R, Offset> where R: Reader<Offset = Offset>, Offset: ReaderOffset,

impl<R, Offset> StructuralPartialEq for Operation<R, Offset> where R: Reader<Offset = Offset>, Offset: ReaderOffset,

Auto Trait Implementations

impl<R, Offset> RefUnwindSafe for Operation<R, Offset> where Offset: RefUnwindSafe, R: RefUnwindSafe,

impl<R, Offset> Send for Operation<R, Offset> where Offset: Send, R: Send,

impl<R, Offset> Sync for Operation<R, Offset> where Offset: Sync, R: Sync,

impl<R, Offset> Unpin for Operation<R, Offset> where Offset: Unpin, R: Unpin,

impl<R, Offset> UnwindSafe for Operation<R, Offset> where Offset: UnwindSafe, R: UnwindSafe,

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized,

pub fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

pub fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

pub fn borrow_mut(&mut self) -> &mut T

impl<Q, K> Equivalent<K> for Q where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

pub fn equivalent(&self, key: &K) -> bool

impl<T> From<T> for T

pub fn from(t: T) -> T

impl<T, U> Into<U> for T where U: From<T>,

pub fn into(self) -> U

impl<T> ToOwned for T where T: Clone,

type Owned = T

pub fn to_owned(&self) -> T

pub fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<R, Offset> Operation<R, Offset> where
R: Reader<Offset = Offset>,
Offset: ReaderOffset,

impl<R: Clone, Offset: Clone> Clone for Operation<R, Offset> where
R: Reader<Offset = Offset>,
Offset: ReaderOffset,

impl<R: Debug, Offset: Debug> Debug for Operation<R, Offset> where
R: Reader<Offset = Offset>,
Offset: ReaderOffset,

impl<R: PartialEq, Offset: PartialEq> PartialEq<Operation<R, Offset>> for Operation<R, Offset> where
R: Reader<Offset = Offset>,
Offset: ReaderOffset,

impl<R: Copy, Offset: Copy> Copy for Operation<R, Offset> where
R: Reader<Offset = Offset>,
Offset: ReaderOffset,

impl<R: Eq, Offset: Eq> Eq for Operation<R, Offset> where
R: Reader<Offset = Offset>,
Offset: ReaderOffset,

impl<R, Offset> StructuralEq for Operation<R, Offset> where
R: Reader<Offset = Offset>,
Offset: ReaderOffset,

impl<R, Offset> StructuralPartialEq for Operation<R, Offset> where
R: Reader<Offset = Offset>,
Offset: ReaderOffset,

impl<R, Offset> RefUnwindSafe for Operation<R, Offset> where
Offset: RefUnwindSafe,
R: RefUnwindSafe,

impl<R, Offset> Send for Operation<R, Offset> where
Offset: Send,
R: Send,

impl<R, Offset> Sync for Operation<R, Offset> where
Offset: Sync,
R: Sync,

impl<R, Offset> Unpin for Operation<R, Offset> where
Offset: Unpin,
R: Unpin,

impl<R, Offset> UnwindSafe for Operation<R, Offset> where
Offset: UnwindSafe,
R: UnwindSafe,

impl<T> Any for T where
T: 'static + ?Sized,

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<Q, K> Equivalent<K> for Q where
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,

impl<T, U> Into<U> for T where
U: From<T>,

impl<T> ToOwned for T where
T: Clone,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,