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Itanium® Architecture for Programmers: Understanding 64-Bit Processors and EPIC Principles
book

Itanium® Architecture for Programmers: Understanding 64-Bit Processors and EPIC Principles

by James S. Evans - Lawrence University, Gregory L. Trimper - viika
April 2003
Intermediate to advanced content levelIntermediate to advanced
576 pages
15h 13m
English
Pearson
Content preview from Itanium® Architecture for Programmers: Understanding 64-Bit Processors and EPIC Principles

6.7. Using C for ASCII Input and Output

The debugger, while a useful tool for exploration, is obviously not ideal for general input and output, especially for ASCII text strings. Textbook presentations of assembly language programming often imply that routines written in assembly language can be called from high-level languages, but—perhaps more by silence than by statement—routines written in a high-level language cannot or should not be called from assembly language programs. In actuality, mixed-language programming at the assembly language level is possible, but does require strict adherence to published calling standards.

6.7.1. GETPUT: Encapsulating C Functions

Our minimal illustration (Figure 6-6) involves a pair of C external routines, ...

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Publisher Resources

ISBN: 0131013726Purchase book