cpuuse, rtmonuse and gcc (was: erc32 wrong compilation flags for initial task with fpu?)

[Aleix Conchillo Flaqué]

I am using REMS 4.6.6 with the PR#1237 patch.

On Fri, Mar 28, 2008 at 2:58 PM, Joel Sherrill
<joel.sherrill at oarcorp.com> wrote:
> Jiri Gaisler wrote:
>  > This is pretty bad. If the kernel uses floats, then compilation
>  > with -msoft-float will not work if the application later is linked
>  > without -msoft-float. Are the CPU_usage_Dump() and Period_usage_Dump()
>  > new functions or have they always been around?
>  I think our emails crossed.  Older versions had floating
>  point math if the FPU defined was set to TRUE.
>
>  Newer versions have been rewritten to completely
>  use integer math.
>
>  So the question for Aleix is what version of RTEMS
>  do you have?  If it is the older FP using version,
>  can you backport the integer version of the functions
>  and post a patch.
>
> > Are there other
>  > functions in the kernel that uses floats as well?
>  >
>  There are not supposed to be.  But gcc has surprised
>  us in the past by generating FP using code when you
>  least expected it.
>
>  So AFAIK "float/double" C types should not be found
>  anywhere in the code except to declare the FP context
>  structures anymore.
>
>  --joel
>