mirror of
https://github.com/go-delve/delve.git
synced 2025-10-31 18:57:18 +08:00
807664b34b
Adds a flag that distinguishes the return values of an injected function call from the return values of a function call executed by the target program.
86 lines
2.5 KiB
Go
86 lines
2.5 KiB
Go
package proc
|
|
|
|
import (
|
|
"errors"
|
|
)
|
|
|
|
// Thread represents a thread.
|
|
type Thread interface {
|
|
Location() (*Location, error)
|
|
// Breakpoint will return the breakpoint that this thread is stopped at or
|
|
// nil if the thread is not stopped at any breakpoint.
|
|
Breakpoint() *BreakpointState
|
|
ThreadID() int
|
|
|
|
// Registers returns the CPU registers of this thread. The contents of the
|
|
// variable returned may or may not change to reflect the new CPU status
|
|
// when the thread is resumed or the registers are changed by calling
|
|
// SetPC/SetSP/etc.
|
|
// To insure that the the returned variable won't change call the Copy
|
|
// method of Registers.
|
|
Registers() (Registers, error)
|
|
|
|
// RestoreRegisters restores saved registers
|
|
RestoreRegisters(Registers) error
|
|
BinInfo() *BinaryInfo
|
|
// ProcessMemory returns the process memory.
|
|
ProcessMemory() MemoryReadWriter
|
|
StepInstruction() error
|
|
// SetCurrentBreakpoint updates the current breakpoint of this thread, if adjustPC is true also checks for breakpoints that were just hit (this should only be passed true after a thread resume)
|
|
SetCurrentBreakpoint(adjustPC bool) error
|
|
// Common returns the CommonThread structure for this thread
|
|
Common() *CommonThread
|
|
|
|
SetPC(uint64) error
|
|
SetSP(uint64) error
|
|
SetDX(uint64) error
|
|
}
|
|
|
|
// Location represents the location of a thread.
|
|
// Holds information on the current instruction
|
|
// address, the source file:line, and the function.
|
|
type Location struct {
|
|
PC uint64
|
|
File string
|
|
Line int
|
|
Fn *Function
|
|
}
|
|
|
|
// CommonThread contains fields used by this package, common to all
|
|
// implementations of the Thread interface.
|
|
type CommonThread struct {
|
|
CallReturn bool // returnValues are the return values of a call injection
|
|
returnValues []*Variable
|
|
g *G // cached g for this thread
|
|
}
|
|
|
|
// ReturnValues reads the return values from the function executing on
|
|
// this thread using the provided LoadConfig.
|
|
func (t *CommonThread) ReturnValues(cfg LoadConfig) []*Variable {
|
|
loadValues(t.returnValues, cfg)
|
|
return t.returnValues
|
|
}
|
|
|
|
// topframe returns the two topmost frames of g, or thread if g is nil.
|
|
func topframe(g *G, thread Thread) (Stackframe, Stackframe, error) {
|
|
var frames []Stackframe
|
|
var err error
|
|
|
|
if g == nil {
|
|
frames, err = ThreadStacktrace(thread, 1)
|
|
} else {
|
|
frames, err = g.Stacktrace(1, StacktraceReadDefers)
|
|
}
|
|
if err != nil {
|
|
return Stackframe{}, Stackframe{}, err
|
|
}
|
|
switch len(frames) {
|
|
case 0:
|
|
return Stackframe{}, Stackframe{}, errors.New("empty stack trace")
|
|
case 1:
|
|
return frames[0], Stackframe{}, nil
|
|
default:
|
|
return frames[0], frames[1], nil
|
|
}
|
|
}
|