Datasheet

Differences

Hardware other than serial, parallel, or ethernet ports can be used to communicate

with Angel. The GUI interface for Remote_A is extended into the loaded driver.

Libraries

All Libraries (C, C++, math, and floating-point) are released as a set of object code

variants that cover all possible choices of Procedure Call Standard and all processor

architecture versions. A limited set of variants is required because the libraries have

been restructured to remove the necessity for some combinations. The compilation and

linking system has been re-engineered so that the correct library variants are

automatically linked in for the chosen compilation options. The linker is able to identify

the correct library variant from attributes embedded in the ELF. This re-engineering

makes the library variants much easier to use and removes the requirement to rebuild

different variants.

The C library has been improved and restructured so that there is no requirement for a

separate embedded C library. The C library chapter in the ADS Compilers and Libraries

Guide describes in detail how to construct target-specific libraries.

New real-time (near constant time) versions of the heap management functions

malloc()

free()

realloc()

, and

calloc()

are provided.

The floating-point libraries have improved performance and functionality. Two versions

are provided:

• The version identified by the files beginning with

conforms to IEEE 754

accuracy standards and meets the floating-point arithmetic requirements of the C

and Java language standards.

• The version identified by the files beginning with

provides selectable IEEE

rounding modes and full control of IEEE exceptions, but at some performance

cost.

The Math library has better accuracy and a wider variety of functions (for example,

gamma function, cube root, inverse hyperbolic functions).

Library manager

The library manager is armar. The ARM librarian enables sets of ELF format object

files to be collected together and maintained in libraries. You can pass such a library to

the linker in place of several ELF files. armar files are compatible with the UNIX

archive format ar.