sparc-rtems4.7-gcc versus fpu

[Peter A. Krauss]

Hello,

I have downloaded sparc-rtems4.7 and would like to use it for a leon2 
target with fpu. I am puzzled on how the compiler inserts fpu 
instructions. My summary is:

- The compiler does insert fpu instructions, if no fpu command line 
option is given or if "-mhard-quad-float" is used.

- The compiler does not insert fpu instructions, if "-mfpu" or 
"-mhard-float" is used.

Why?


Peter

-- 
Dr. Peter A. Krauss, peter.a.krauss at astrium.eads.net
EADS Astrium, Dept ASE231,     81663 Munich, Germany
Tel: (+49) 89 / 607-21692, Fax: (+49) 89 / 607-35180

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