On 1/24/25 08:28, Peter Maydell wrote:
FPCR.AH == 1 mandates that negation of a NaN value should not flip
its sign bit. This means we can no longer use gen_vfp_neg*()
everywhere but must instead generate slightly more complex code when
FPCR.AH is set.
Make this change for the scalar FNEG and for those places in
translate-a64.c which were previously directly calling
gen_vfp_neg*().
This change in semantics also affects any other instruction whose
pseudocode calls FPNeg(); in following commits we extend this
change to the other affected instructions.
Signed-off-by: Peter Maydell<peter.mayd...@linaro.org>
---
target/arm/tcg/translate-a64.c | 125 ++++++++++++++++++++++++++++++---
1 file changed, 114 insertions(+), 11 deletions(-)
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
r~
