公开(公告)号：US09678816B2

公开(公告)日：2017-06-13

申请号：US13848231

申请日：2013-03-21

Applicant: VMware, Inc.

Inventor： Radu Rugina ,  Vivek Mohan Thampi ,  Ricardo E. Gonzalez ,  Alok Kataria

IPC: G06F11/00 ,  G06F11/07 ,  G06F11/36

CPC classification number: G06F11/0712 ,  G06F11/0793 ,  G06F11/36 ,  G06F11/3644

Abstract: Probes are employed to inject errors into code. In response to a function-entry trigger event, a probe writes a predefined test value to a return value register. The probe then cause function execution to be skipped such that the test value is returned in lieu of the value which would otherwise be returned by the function. Behavior after the error is injected may then be observed, data collected, etc. such that undesired behavior (e.g., crashes) can be identified and/or corrected. In an alternative embodiment, the probe which is triggered may write a test value to a given memory address.

公开(公告)号：US10089126B2

公开(公告)日：2018-10-02

申请号：US13848191

申请日：2013-03-21

Applicant: VMware, Inc.

Inventor： Radu Rugina ,  Ricardo E. Gonzalez ,  Zheng He ,  Alok Kataria

IPC: G06F9/455 ,  G06F9/48 ,  G06F11/34

Abstract: Function exits are instrumented in tail-call optimized code in which calls to target functions and return instructions are replaced by jump instructions. A probe engine identifies a tail-call jump and instruments the jumps to raise an exception. In response to an exception raised at the tail-call jump, an exception handler loads various registers and transferring control to a trampoline, which calls the jump target. After the target function returns, an exit probe is fired when the trampoline itself returns.

公开(公告)号：US20140289726A1

公开(公告)日：2014-09-25

申请号：US13848191

申请日：2013-03-21

Applicant: VMWARE, INC.

Inventor： Radu Rugina ,  Ricardo E. Gonzalez ,  Zheng He ,  Alok Kataria

IPC: G06F9/455

CPC classification number: G06F9/45525 ,  G06F9/45545 ,  G06F9/4812 ,  G06F11/3409 ,  G06F11/3466 ,  G06F2201/815 ,  G06F2201/865

Abstract: Function exits are instrumented in tail-call optimized code in which calls to target functions and return instructions are replaced by jump instructions. A probe engine identifies a tail-call jump and instruments the jumps to raise an exception. In response to an exception raised at the tail-call jump, an exception handler loads various registers and transferring control to a trampoline, which calls the jump target. After the target function returns, an exit probe is fired when the trampoline itself returns.

Abstract translation: 功能出口被调用在尾调用优化代码中，其中对目标函数和返回指令的调用被跳转指令代替。 探针引擎识别尾部呼叫跳转并设置跳转以引发异常。 响应于尾部调用跳转引发的异常，异常处理程序加载各种寄存器并将控制传输到调用跳转目标的蹦床。 目标函数返回后，当蹦床本身返回时，将退出探针。