Reversing execution of instructions in a debugger

Details Reversing execution of instructions in a debugger Reversing execution of instructions in a debugger

2006-07-21

2010-11-16

Zhen, Wei Y (Department: 2191)

Data processing: software development, installation, and managem

Software program development tool

Testing or debugging

C717S125000, C717S127000, C717S128000, C717S129000

Reexamination Certificate

active

07836430

ABSTRACT:
A method can include receiving navigational debug input from a debugger interface including input to traverse input code in a plurality of modes; in response to receiving the navigational debug input, a) saving state of a program being executed in a corresponding debugger, including creating a child process from a currently executing process, and b) executing a portion of the program, wherein executing the portion of the program comprises suspending the created child process, and continuing to execute the currently executing process; receiving input to reverse execution of the portion of the program; and restoring the saved state of the program, wherein restoring the saved state of the program comprises suspending the currently executing process and activating the suspended child process. The navigation input can include input to single-step, step over a function, step into a function or set a breakpoint in programming code running within the corresponding debugger.

REFERENCES:
patent: 2005/0246690 (2005-11-01), Horton et al.
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“Using reverse execution” discussion thread, initiated Sep. 12, 2005 on a gdb mailing list, available starting at http://sources.redhat.com/ml/gdb/2005-09/msg00080.html (last accessed Jul. 21, 2006) (81 pages).
Lewis, Bil, “Debugging Backwards in Time,” [online]. Mar. 2003, pp. 1-15. Retrieved from the Internet: http://www.lambdacs.com/debugger/AADEBUG—Mar—03.pdf.
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