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ARM: Ignore top 16 bits when doing VCVT from 16 bit fixed point

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VCVT of 16 bit fixed point to float should ignore the top 16 bits
of the source register. Cast to int16_t and friends rather than
int16 -- the former is guaranteed exactly 16 bits wide where the
latter is merely at least 16 bits wide (and so is usually 32 bits).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Nathan Froyd <froydnj@codesourcery.com>
This commit is contained in:
Peter Maydell
2010-12-07 15:37:34 +00:00
parent 2d6277373d
commit 26a5e69aaf
1 changed files with 1 additions and 1 deletions
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target-arm/helper.c
+1 -1
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@@ -2549,7 +2549,7 @@ float32 VFP_HELPER(fcvts, d)(float64 x, CPUState *env)
ftype VFP_HELPER(name##to, p)(ftype x, uint32_t shift, CPUState *env) \
{ \
ftype tmp; \
tmp = sign##int32_to_##ftype ((itype)vfp_##p##toi(x), \
tmp = sign##int32_to_##ftype ((itype##_t)vfp_##p##toi(x), \
&env->vfp.fp_status); \
return ftype##_scalbn(tmp, -(int)shift, &env->vfp.fp_status); \
} \