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authorPeter Maydell <peter.maydell@linaro.org>2014-02-20 10:35:50 +0000
committerPeter Maydell <peter.maydell@linaro.org>2014-02-20 10:35:50 +0000
commit67d43538aee10b6cfe8f3606c69187a3e142a2ba (patch)
tree4eb0637464a3011cc1ecc91b4e4ae9e6867d8445 /thunk.c
parentbc242f9bb6324a50e7572c0997904b66b630f73a (diff)
softfloat: Support halving the result of muladd operation
The ARMv8 instruction set includes a fused floating point reciprocal square root step instruction which demands an "(x * y + z) / 2" fused operation. Support this by adding a flag to the softfloat muladd operations which requests that the result is halved before rounding. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net>
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