[SH][PATCH] __fpscr_values broken

[Andrew Stubbs]

The SH4 needs to flip a mode bit in the FPSCR register each time it
wants to do single precision FP, rather than double precision. These
registers values are always stored in a symbol named __fpscr_values.

Unfortunately, due to the special way that shared libraries work, the
__fpscr_values symbol is not always visible.

> [...]/math/libm_pic.a(e_lgamma_r.os): In function `__ieee754_lgamma_r':
> [...]/math/../sysdeps/ieee754/dbl-64/e_lgamma_r.c:247: undefined reference to `__fpscr_values'
> [...]/math/libm_pic.a(e_acosf.os): In function `__ieee754_acosf':
> [...]/math/../sysdeps/ieee754/flt-32/e_acosf.c:55: undefined reference to `__fpscr_values'
> [...]/math/../sysdeps/ieee754/flt-32/e_acosf.c:74: undefined reference to `__fpscr_values'
> [...]/math/libm_pic.a(e_acoshf.os): In function `__ieee754_acoshf':
> [...]/math/../sysdeps/ieee754/flt-32/e_acoshf.c:52: undefined reference to `__fpscr_values'
> [...]/math/libm_pic.a(e_asinf.os): In function `__ieee754_asinf':
> [...]/math/../sysdeps/ieee754/flt-32/e_asinf.c:109: undefined reference to `__fpscr_values'
> [...]/math/libm_pic.a(e_atan2f.os):[...]/math/../sysdeps/ieee754/flt-32/e_atan2f.c:91: more undefined references to `__fpscr_values' follow

Please apply this patch to fix the problem.

Many thanks

Andrew Stubbs

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