Improved setjmp/longjmp for speculative execution frameworks

Details Improved setjmp/longjmp for speculative execution frameworks Improved setjmp/longjmp for speculative execution frameworks

G - Physics

06

F

G06F 9/30 (2006.01) G06F 9/40 (2006.01) G06F 9/45 (2006.01)

Patent

CA 2702354

An illustrative embodiment of a computer-implemented process for hardware check pointing in speculative execution frameworks, identifies calls to a set of setjmp/longjmp instructions to form identified calls to setjmp/longjmp, determines a control flow path between a call to a setjmp and a longjmp pair of instructions in the identified calls to setjmp/longjmp and replaces calls to the setjmp/longjmp pair of instructions with calls to an improved setjmp and improved longjmp instruction pair. The computer-implemented process creates a context data structure in memory, computes a non-volatile save/restore set and replaces the call to improved setjmp of the setjmp/longjmp pair of instructions with instructions to save all required non-volatile and special purpose registers and replaces a call to improved longjmp of the setjmp/longjmp pair of instructions with instructions to restore all required non-volatile and special purpose registers and to branch to an instruction immediately following a block of code containing the call to improved_setjmp.

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