CELF Project Proposal/Implement NUBI ABI for MIPS
- Implement NUBI ABI for MIPS
- Mikhail Gusarov
MIPS ABI in use are quite inefficient : no dedicated TLS register, ancient floating point calling conventions, inefficient registers allocation etc.
Recent work in gcc/glibc fixed the most glaring problems by introducing PLT which allowed executable code to be compiled without PIC, but the rest is not addressed 
There is draft of new MIPS ABI addressing the shortcomings of o32/o64/n64 and providing the framework for unifying the vendor-specific extensions for older ABIs   
The proposed task consists of adding NUBI MIPS ABI to binutils, gcc and glibc.
 http://www.linux-mips.org/wiki/WhatsWrongWithO32N32N64  http://www.linux-mips.org/wiki/IntroducingNUBI  http://www.linux-mips.org/wiki/NUBI  http://www.linux-mips.org/pub/linux/mips/doc/NUBI/  http://gcc.gnu.org/gcc-4.4/changes.html ("MIPS" section)
Mihkail Gusarov writes:
While I propose it, I have no qualification for even trying to do it. Just stumbled upon Linux inefficiency on MIPS and thought it might be a good CELF OPP.