µOS++ complementary C library functions

These are some files that complement or extend the C library:

• c-syscalls-empty.c define weak empty syscalls to keep the linker happy; redefine those needed for retargeted configurations;
• _sbrk.c allocates block of memory in the free store (the heap) at the end of RAM, up to the stack; must match the definitons in the linker script;
• stdlib/assert.c defines the function to be called when assertions are taken;
• stdlib/atexit.cpp defines a simple registry for functions to be called when the program is terminated; useful for semihosting applications that terminate normally; the size of the static array is OS_INTEGER_ATEXIT_ARRAY_SIZE, default 3;
• stdlib/exit.c defines the functionality of exit() and abort()
• stdlib/init-fini.c defines weak empty _init() and _fini(), to keep linker happy.

Developer info

This section is intended to developers who plan to include this library in their own projects.

Prerequisites

A recent xpm, which is a portable Node.js command line application.

Easy install

This package is available as @micro-os-plus/c-libs from the npmjs.com registry; with xpm available, installing the latest version of the package is quite easy:

$ xpm install @micro-os-plus/c-libs

This package is also available from GitHub:

$ git clone https://github.com/micro-os-plus/c-libs-xpack.git c-libs-xpack.git

Maintainer info

How to publish

• commit all changes
• update CHANGELOG.md; commit with a message like CHANGELOG: prepare v0.1.2
• npm version patch
• push all changes to GitHub
• npm publish

License

The original content is released under the MIT License, with all rights reserved to Liviu Ionescu.