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| author | Peter Maydell <peter.maydell@linaro.org> | 2025-02-01 16:39:34 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2025-02-11 16:22:07 +0000 |
| commit | e76df44d2dd06018016f35aff41258ce356d6e40 (patch) | |
| tree | a929d286d693e0724b9c3b1ee3fbbe0eafdeefc7 /rust/qemu-api | |
| parent | 4ba5383bc50d8ef18aed0d6aaa203c331dc0abf5 (diff) | |
| download | qemu-e76df44d2dd06018016f35aff41258ce356d6e40.zip qemu-e76df44d2dd06018016f35aff41258ce356d6e40.tar.gz qemu-e76df44d2dd06018016f35aff41258ce356d6e40.tar.bz2 | |
target/arm: Implement FPCR.AH handling of negation of NaN
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.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'rust/qemu-api')
0 files changed, 0 insertions, 0 deletions