Linker Tasks

Using Linker commands

Nonfatal Shared Library Binding with -B nonfatal

The linker also supports nonfatal binding, which is useful with the -B immediate option. Like immediate binding, nonfatal immediate binding causes all required symbols to be bound at program startup. The main difference from immediate binding is that program execution continues even if the dynamic loader cannot resolve symbols. Compare this with immediate binding, where unresolved symbols cause the program to abort.

To use nonfatal binding, specify the -B nonfatal option along with the -B immediate option on the linker command line. The order of the options is not important, nor is the placement of the options on the line. For example, the following ld command uses nonfatal immediate binding:

$ ld /opt/langtools/lib/crt0.o prog.o -B nonfatal \ -B immediate -lm -lc

Note that the -B nonfatal modifier does not work with deferred binding because a symbol must have been bound by the time a program actually references or calls it. A program attempting to call or access a nonexistent symbol is a fatal error.

Restricted Shared Library Binding with -B restricted

The linker also supports restricted binding, which is useful with the -B deferred and -B nonfatal options. The -B restricted option causes the dynamic loader to restrict the search for symbols to those that were visible when the library was loaded. If the dynamic loader cannot find a symbol within the restricted set, a run-time symbol binding error occurs and the program aborts.

The -B nonfatal modifier alters this behavior slightly: If the dynamic loader cannot find a symbol in the restricted set, it looks in the global symbol set (the symbols defined in all libraries) to resolve the symbol. If it still cannot find the symbol, then a run-time symbol-binding error occurs and the program aborts.

When is -B restricted most useful? Consider a program that creates duplicate symbol definitions by either of these methods:

•The program uses shl_load with the BIND_FIRST flag to load a library that contains symbol definitions that are already defined in a library that was loaded at program startup.

Chapter 3

59

Page 58 Page 60
Page 59
Image 59
Kenwood HP 9000 Nonfatal Shared Library Binding with -B nonfatal, Restricted Shared Library Binding with -B restricted
Page 58 Page 60

HP 9000 specifications

The Kenwood HP 9000 is a cutting-edge home appliance designed for culinary enthusiasts seeking to elevate their cooking experience. This powerful kitchen machine stands out for its multi-functionality, combining the roles of a food processor, blender, and mixer into one sleek unit.

One of the flagship features of the Kenwood HP 9000 is its robust motor, which delivers exceptional performance across various tasks. With a powerful motor that operates at multiple speeds, users can tackle everything from kneading dough to finely chopping vegetables with ease. The variable speed control allows for precision, ensuring that every ingredient is processed to perfection according to individual preferences.

The HP 9000 comes equipped with a variety of attachments that enhance its versatility. Among these are a stainless-steel mixing bowl, a dough hook, a whisk, and multiple cutting blades. This extensive array of accessories means that users can whip up delightful pastries, create homemade pasta, or prepare smoothies with minimal hassle. Each attachment is designed for easy attachment and removal, making the transition between tasks seamless and efficient.

Another key characteristic of the Kenwood HP 9000 is its advanced safety features. The design incorporates mechanisms that prevent the machine from operating unless all components are securely in place. This not only gives users peace of mind while cooking but also ensures longevity for the appliance, reducing the risk of wear and tear over time.

In terms of design, the HP 9000 is both modern and aesthetically pleasing. Its ergonomic shape and compact size make it easy to store and use in various kitchen settings, while the high-quality materials used in its construction guarantee durability and longevity. The user interface is intuitive, with clearly labeled buttons that facilitate operation, ensuring that even novice cooks can navigate the machine effortlessly.

Additionally, the Kenwood HP 9000 features innovative technologies, such as an integrated digital timer and a pulse function for added control during food preparation. These features enhance cooking precision, allowing users to achieve consistent results every time.

In summary, the Kenwood HP 9000 is an exceptional kitchen appliance that combines power, versatility, and safety. With its advanced features and user-friendly design, it is an ideal choice for anyone looking to simplify their cooking process while achieving professional-level results. Whether you're whipping up a quick meal or tackling an elaborate recipe, the HP 9000 is a reliable companion that will inspire culinary creativity.
Top Page Image Contents