2a68058b4a
* delve now can be built to arm64-arch and running on linux-arm64 OS. * arm64 general-purpose registers have completed. * arm64 disasm has completed. Co-authored-by: tykcd996 <tang.yuke@zte.com.cn> Co-authored-by: hengwu0 <wu.heng@zte.com.cn>
78 lines
2.5 KiB
Go
78 lines
2.5 KiB
Go
package proc
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// AsmInstruction represents one assembly instruction.
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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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// AssemblyFlavour is the assembly syntax to display.
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type AssemblyFlavour int
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const (
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// GNUFlavour will display GNU assembly syntax.
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GNUFlavour = AssemblyFlavour(iota)
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// IntelFlavour will display Intel assembly syntax.
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IntelFlavour
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// GoFlavour will display Go assembly syntax.
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GoFlavour
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)
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// Disassemble disassembles target memory between startAddr and endAddr, marking
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// the current instruction being executed in goroutine g.
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// If currentGoroutine is set and thread is stopped at a CALL instruction Disassemble
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// 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 startAddr - endAddr.
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func Disassemble(mem MemoryReadWriter, regs Registers, breakpoints *BreakpointMap, bi *BinaryInfo, startAddr, endAddr uint64) ([]AsmInstruction, error) {
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return disassemble(mem, regs, breakpoints, bi, startAddr, endAddr, false)
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}
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func disassemble(memrw MemoryReadWriter, regs Registers, breakpoints *BreakpointMap, bi *BinaryInfo, startAddr, endAddr uint64, singleInstr bool) ([]AsmInstruction, error) {
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minInstructionLength := bi.Arch.MinInstructionLength()
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mem := make([]byte, int(endAddr-startAddr))
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_, err := memrw.ReadMemory(mem, uintptr(startAddr))
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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)/int(maxInstructionLength))
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pc := startAddr
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var curpc uint64
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if regs != nil {
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curpc = regs.PC()
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}
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for len(mem) > 0 {
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bp, atbp := breakpoints.M[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 := bi.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 := (regs != nil) && (curpc == pc)
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destloc := resolveCallArg(inst, pc, atpc, regs, memrw, bi)
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r = append(r, AsmInstruction{Loc: loc, DestLoc: destloc, Bytes: mem[:inst.Size()], 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[:minInstructionLength], Breakpoint: atbp, Inst: nil})
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pc += uint64(minInstructionLength)
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mem = mem[minInstructionLength:]
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}
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if singleInstr {
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break
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}
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}
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return r, nil
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}
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