probe_rs::debug::stack_frame

Struct StackFrame

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pub struct StackFrame {
    pub id: ObjectRef,
    pub function_name: String,
    pub source_location: Option<SourceLocation>,
    pub registers: DebugRegisters,
    pub pc: RegisterValue,
    pub frame_base: Option<u64>,
    pub is_inlined: bool,
    pub local_variables: Option<VariableCache>,
    pub canonical_frame_address: Option<u64>,
}
Available on crate feature debug only.
Expand description

A full stack frame with all its information contained.

Fields§

§id: ObjectRef

The stackframe ID.

§function_name: String

The name of the function this stackframe belongs to.

§source_location: Option<SourceLocation>

The source location the function this stackframe belongs to originates.

§registers: DebugRegisters

The current register state represented in this stackframe.

§pc: RegisterValue

The program counter / address of the current instruction when this stack frame was created

§frame_base: Option<u64>

The DWARF debug info defines a DW_AT_frame_base attribute which can be used to calculate the memory location of variables in a stack frame. The rustc compiler, has a compile flag, -C force-frame-pointers, which when set to on, will usually result in this being a pointer to the register value of the platform frame pointer. However, some isa’s (e.g. RISC-V) uses a default of -C force-frame-pointers off and will then use the stack pointer as the frame base address. We store the frame_base of the relevant non-inlined parent function, to ensure correct calculation of the Variable::memory_location values.

§is_inlined: bool

Indicate if this stack frame belongs to an inlined function.

§local_variables: Option<VariableCache>

A cache of ‘local’ scoped variables for this stackframe, with a Variable for each in-scope variable.

  • Complex variables and pointers will have additional children.
    • This structure is recursive until a base type is encountered.
§canonical_frame_address: Option<u64>

The value of the stack pointer just before the CALL instruction in the parent function.

Trait Implementations§

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impl Display for StackFrame

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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 PartialEq for StackFrame

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fn eq(&self, other: &StackFrame) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Serialize for StackFrame

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl StructuralPartialEq for StackFrame

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