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target-xtensa: implement FP0 arithmetic

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These are FP arithmetic opcodes.
See ISA, 4.3.10 for more details.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Max Filippov 2012-09-19 04:23:56 +04:00 • committed by Blue Swirl
parent 9ed7ae12af
commit 0b6df8385d
3 changed files with 104 additions and 1 deletions
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37
target-xtensa/op_helper.c
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@ -784,3 +784,40 @@ void HELPER(wur_fcr)(CPUXtensaState *env, uint32_t v)
env->uregs[FCR] = v & 0xfffff07f;
set_float_rounding_mode(rounding_mode[v & 3], &env->fp_status);
}
float32 HELPER(abs_s)(float32 v)
{
return float32_abs(v);
}
float32 HELPER(neg_s)(float32 v)
{
return float32_chs(v);
}
float32 HELPER(add_s)(CPUXtensaState *env, float32 a, float32 b)
{
return float32_add(a, b, &env->fp_status);
}
float32 HELPER(sub_s)(CPUXtensaState *env, float32 a, float32 b)
{
return float32_sub(a, b, &env->fp_status);
}
float32 HELPER(mul_s)(CPUXtensaState *env, float32 a, float32 b)
{
return float32_mul(a, b, &env->fp_status);
}
float32 HELPER(madd_s)(CPUXtensaState *env, float32 a, float32 b, float32 c)
{
return float32_muladd(b, c, a, 0,
&env->fp_status);
}
float32 HELPER(msub_s)(CPUXtensaState *env, float32 a, float32 b, float32 c)
{
return float32_muladd(b, c, a, float_muladd_negate_product,
&env->fp_status);
}