what does mean softfp. gcc related
lei yang
yanglei.fage at gmail.com
Fri Jan 21 13:31:13 EST 2011
Hi list,
I confused by arm gcc flags
In gcc user guide:
-mfloat-abi=name
`softfp' allows the generation of code using hardware floating-point
instructions, but still uses the soft-float calling conventions.
`hard' allows generation of floating-point instructions and uses
FPU-specific calling conventions.
eg:
-mfpu=vfp -mfloat-abi=softfp
what does this mean if arm support vfp instructions.
what's the different between "-mfpu=vfp -mfloat-abi=softfp" and
"-mfpu=vfp -mfloat-abi=hard".
can someone give me a hand?
Thanks
Lei
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