DATA BREAKPOINTS ON CERTAIN KINDS OF FUNCTIONS

    公开(公告)号:US20200218639A1

    公开(公告)日:2020-07-09

    申请号:US16239474

    申请日:2019-01-03

    Abstract: To set data breakpoints on properties and certain other functions, constituent data locations (CDLs) that can contribute to computation of the property value or other function result are identified, and respective constituent data breakpoints are added at one or more CDLs by data breakpoint adder code. Each constituent data breakpoint will suspend execution of an inspectable software in response to occurrence of a CDL data entry. The CDLs are identified by CDL identifier code using static data flow analysis, enhanced interpretation, or disassembly, with recursion as appropriate. Kernel or runtime routines, and other routines designated as known, can be excluded from the CDL search. Data locations marked read-only, or that are effectively read-only because they will not be written, can also be excluded. The resulting data breakpoint functionality makes internal program state information available, thus facilitating computing system accuracy, flexibility, security, speed, memory usage efficiency, and other functional characteristics.

    STORAGE ACCESS DEBUGGING WITH DISASSEMBLY AND SYMBOL ENTRIES

    公开(公告)号:US20170116108A1

    公开(公告)日:2017-04-27

    申请号:US14922503

    申请日:2015-10-26

    CPC classification number: G06F11/3624 G06F8/53 G06F11/362 G06F11/3636

    Abstract: Debugging without reliance on source code includes obtaining a disassembly of a portion of an executable code. The disassembly includes a sequence of assembly instructions including an instruction Y at which an exception or other event of interest occurred and at least five assembly instructions that precede Y. An assembly instruction X is located for which a mapping is known between a storage location accessed in instruction X and a symbolic name SYM_X for that storage location, where data flow and/or control flow leads from instruction X to instruction Y. A symbolic name SYM_Y that pertains to instruction Y is built from SYM_X while interpreting the assembly instructions between X and Y, and SYM_Y is reported to the user. Some variations include tools and techniques for locating the instruction X, and tools and techniques for determining a flow relationship between instruction X and instruction Y.

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