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4116d66c8d
- Unlike FunctionEntryToFirstLine can skip the prologue on functions that are defined on a single line, either because they weren't formatted or because they were autogenerated - Can skip the prologue on most functions when setting a breakpoint with the filename:line syntax Fixes #396
68 lines
1.8 KiB
Go
68 lines
1.8 KiB
Go
package proc
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type AsmInstruction struct {
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Loc Location
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DestLoc *Location
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Bytes []byte
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Breakpoint bool
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AtPC bool
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Inst *ArchInst
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}
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type AssemblyFlavour int
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const (
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GNUFlavour = AssemblyFlavour(iota)
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IntelFlavour
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)
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// Disassemble disassembles target memory between startPC and endPC
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// If currentGoroutine is set and thread is stopped at a CALL instruction Disassemble will evaluate the argument of the CALL instruction using the thread's registers
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// Be aware that the Bytes field of each returned instruction is a slice of a larger array of size endPC - startPC
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func (thread *Thread) Disassemble(startPC, endPC uint64, currentGoroutine bool) ([]AsmInstruction, error) {
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if thread.dbp.exited {
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return nil, &ProcessExitedError{}
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}
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mem, err := thread.readMemory(uintptr(startPC), int(endPC-startPC))
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if err != nil {
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return nil, err
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}
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r := make([]AsmInstruction, 0, len(mem)/15)
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pc := startPC
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var curpc uint64
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var regs Registers
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if currentGoroutine {
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regs, _ = thread.Registers()
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if regs != nil {
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curpc = regs.PC()
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}
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}
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for len(mem) > 0 {
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bp, atbp := thread.dbp.Breakpoints[pc]
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if atbp {
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for i := range bp.OriginalData {
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mem[i] = bp.OriginalData[i]
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}
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}
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file, line, fn := thread.dbp.PCToLine(pc)
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loc := Location{PC: pc, File: file, Line: line, Fn: fn}
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inst, err := asmDecode(mem, pc)
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if err == nil {
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atpc := currentGoroutine && (curpc == pc)
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destloc := thread.resolveCallArg(inst, atpc, regs)
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r = append(r, AsmInstruction{Loc: loc, DestLoc: destloc, Bytes: mem[:inst.Len], Breakpoint: atbp, AtPC: atpc, Inst: inst})
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pc += uint64(inst.Size())
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mem = mem[inst.Size():]
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} else {
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r = append(r, AsmInstruction{Loc: loc, Bytes: mem[:1], Breakpoint: atbp, Inst: nil})
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pc++
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mem = mem[1:]
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}
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}
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return r, nil
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}
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