March 2016
Beginner to intermediate
296 pages
6h 34m
English
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Implementing a jump table
Under certain circumstances, a jump table provides a very efficient way of implementing a C language switch statement block. We can define a jump table as a list of unconditional branch instructions—each referencing a different procedure or subroutine. We branch to one of the subroutines by loading the program counter with the address of the unconditional branch that is stored in the jump table. The effective addresses of items in the jump table are formed using a base + offset addressing mode. Base + offset addressing is commonly used to access data items stored in arrays, and a jump table is effectively just an array of address items.
Getting ready
To illustrate a jump table, we'll develop a recipe called asmJumpTable_c4v0 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.