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Implement flush-to-zero mode (denormal results are replaced with zero).

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Signed-off-by: Paul Brook <paul@codesourcery.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6107 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2008-12-19 14:33:59 +00:00
parent 5c7908ed23
commit fe76d97653
3 changed files with 25 additions and 4 deletions
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3
target-arm/helper.c
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@ -2334,12 +2334,13 @@ void HELPER(vfp_set_fpscr)(CPUState *env, uint32_t val)
}
set_float_rounding_mode(i, &env->vfp.fp_status);
}
if (changed & (1 << 24))
set_flush_to_zero((val & (1 << 24)) != 0, &env->vfp.fp_status);
if (changed & (1 << 25))
set_default_nan_mode((val & (1 << 25)) != 0, &env->vfp.fp_status);
i = vfp_exceptbits_to_host((val >> 8) & 0x1f);
set_float_exception_flags(i, &env->vfp.fp_status);
/* XXX: FZ and DN are not implemented. */
}
#define VFP_HELPER(name, p) HELPER(glue(glue(vfp_,name),p))