Windbg反汇编器地址解析

Question

我正在分析一个完整的内存转储，我应用了 Windbg uf 命令来查看函数的作用

0: kd> uf profsvc!CUserProfileService::_RegisterGPNotification

这是输出的一部分。我想知道为什么括号中的地址与 profsvc!CUserProfileService::_RegisterGPNotification+0x44 的地址不同，后者应该是

000007fe fb149276

但是

000007fe fb155019.

当我尝试用 u 反汇编地址 000007fe fb155019 时，它指向

profsvc!CUserProfileService::_RegisterGPNotification+0x44:

我真的很困惑，非常感谢任何帮助。

WinDBG 的输出

….
profsvc!CUserProfileService::_RegisterGPNotification+0x2e:
000007fe`fb14925e ba01000000      mov     edx,1
000007fe`fb149263 488bc8          mov     rcx,rax
000007fe`fb149266 ff157c410200    call    qword ptr [profsvc!_imp_RegisterGPNotification (000007fe`fb16d3e8)]
000007fe`fb14926c 85c0            test    eax,eax
000007fe`fb14926e 0f84a5bd0000    je      profsvc!CUserProfileService::_RegisterGPNotification+0x44 (**000007fe`fb155019**)

profsvc!CUserProfileService::_RegisterGPNotification+0x40:
000007fe`fb149274 33db            xor     ebx,ebx
000007fe`fb149276 eb00            jmp     profsvc!CUserProfileService::_RegisterGPNotification+0x66 (000007fe`fb149278)  Branch

profsvc!CUserProfileService::_RegisterGPNotification+0x66:
000007fe`fb149278 488b0d31b00200  mov     rcx,qword ptr [profsvc!WPP_GLOBAL_Control (000007fe`fb1742b0)]
000007fe`fb14927f 488d052ab00200  lea     rax,[profsvc!WPP_GLOBAL_Control (000007fe`fb1742b0)]
000007fe`fb149286 483bc8          cmp     rcx,rax
000007fe`fb149289 740a            je      profsvc!CUserProfileService::_RegisterGPNotification+0x94 (000007fe`fb149295)  Branch

0: kd> u 000007fe`fb155019
profsvc!CUserProfileService::_RegisterGPNotification+0x44:
000007fe`fb155019 ??              ???
                         ^ Memory access error in 'u 000007fe`fb155019'

Answer 1

这是由于优化，请参阅以下 MSDN 文章：

https://msdn.microsoft.com/en-us/library/windows/hardware/ff541382(v=vs.85).aspx

Windbg反汇编器地址解析

Windbg disassembler address resolution

windbg

disassembly