SoftFloat implementation for MIPS in GCC

[Rajesh Palani <rpalani2@yahoo.com>]

Hi,

 

   We are using a gcc 2.96 20000731 (Red Hat Linux 7.1 2.96-99.1) GCC cross-compiler with -msoftfloat to use software floating point routines.

 

   When we profied an application using the Linux Trace Toolkit, we observed that  there were a lot of CpU (Co-processor unusable) exceptions.  Some of the floating point routines ( eg. __floatdidf) expect values to be passed in floating point registers and take FP exceptions even though the application has been built with -msoftfloat.  Is this a general MIPS/GCC issue?  What is the status of softfloat  for MIPS in GCC?

 

   Thanks in advance.

 

   Rajesh

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