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Encyclopedia > Jump table

In computer science, a jump table is a list of the addresses of a set of routines which can be selected by number. Many microprocessors, for example, have special instructions for calling one of a set of such routines given a small integer index into the table.


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The PRC Format (2263 words)
The jump table is used to transfer control between different code segments, which may not yet be loaded into the system.
Jump table entries have two forms, depending on whether the destination code segment to which the entry points is loaded or unloaded.
The size of the jump table is correct (8 bytes), as is the start address of the application (code segment 1, offset 0) in the first (and only) jump table entry.
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