[Picolibc] Picolibc version 1.1
keithp at keithp.com
Thu Nov 14 22:39:33 PST 2019
## Picolibc Version 1.1 ##
Picolibc development is settling down at last. With the addition of a
simple 'hello world' demo app, it seems like a good time to stamp the
current code as 'version 1.1'.
### Changes since Version 1.0 ###
* Semihosting helper library. Semihosting lets an application running
under a debugger or emulator communicate through the debugger or
emulator with the environment hosting those. It's great for
platform bringup before you've got clocking and a serial
driver. I'm hoping it will also make running tests under qemu
possible. The code works on ARM and RISC-V systems and offers
console I/O and exit() support (under qemu).
* Hello World example. This is a stand-alone bit of code with a
Makefile that demonstrates how to build a complete application for
both RISC-V and ARM embedded systems using picolibc after it has
been installed. The executables run under QEMU using a provided
script. Here's all the source code you need; the rest of the code
(including semihosting support) is provided by picolibc:
* POSIX file I/O support. For systems which have
open/close/read/write, picolibc's tinystdio can now provide stdio
functions that use them, including fopen and fdopen.
* Updated code from newlib. I've merged current upstream newlib into
the tree. There were a few useful changes there, including libm
stubs for fenv on hosts that don't provide their own.
### Where To Get Bits ###
You can find picolibc on my personal server's git repository:
There's also a copy on github:
If you like tarballs, I also create those:
I've create tags for 1.1 (upstream) and 1.1-1 (debian packaging
included) and pushed those to the git repositories.
### Filing Issues, Making Contributions
There's a mailing list at keithp.com:
Or you can file issues using the github tracker.
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