Re: msp430-elf-gcc upcoming release
Grant Edwards <[email protected]>
| Newsgroups | gmane.comp.hardware.texas-instruments.msp430.gcc.user |
|---|---|
| Message-ID | <[email protected]> |
On 2014-04-22, DJ Delorie <[email protected]> wrote: > >> I was surprised to see DJ's comment that there actually was no >> standard system interface; the "standard interface" I was referring to >> is the one documented at http://neptune.billgatliff.com/newlib.html > > "The key to a successfully ported newlib is providing stubs that > bridge the gap between the functionality newlib needs, and what your > target system can provide." > > This bridge is what I was referring to. Newlib calls read() but does > not provide an implementation of it. Libgloss provides various > target-specific implementations of read(), the one I wrote for msp430 > uses CIO to communicate with the simulator/debugger. Why is newlib calling read(), and from what is it expecting to read? >> I was expecting for MSP430 to also simply implement the functions >> stubbed in newlib's libnosys, but at first glance it looks like the >> CIO one uses different names, and maybe doesn't support all the same >> functions. > > Hmmm... it should be all the same names. I only changed the existing > libgloss hooks. But, I don't always do all the hooks, usually only > write() and exit() are needed for our testing. Again, why should newlib be calling write() and what is it expecting to write _to_? What does it expect exit() to do? -- Grant Edwards grant.b.edwards Yow! Did you move a lot of at KOREAN STEAK KNIVES this gmail.com trip, Dingy? ------------------------------------------------------------------------------ Start Your Social Network Today - Download eXo Platform Build your Enterprise Intranet with eXo Platform Software Java Based Open Source Intranet - Social, Extensible, Cloud Ready Get Started Now And Turn Your Intranet Into A Collaboration Platform http://p.sf.net/sfu/ExoPlatform