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| author | Peter Maydell <peter.maydell@linaro.org> | 2011-05-19 14:46:18 +0100 |
|---|---|---|
| committer | Aurelien Jarno <aurelien@aurel32.net> | 2011-05-23 22:39:36 +0200 |
| commit | 36802b6b1ed7887aeae5d027f86a969400f8824a (patch) | |
| tree | 2ef460bb4d8f3515c4e9ae912940bd8ace4cf078 | |
| parent | e6afc87f804abee7d0479be5e8e31c56d885fafb (diff) | |
| download | hqemu-36802b6b1ed7887aeae5d027f86a969400f8824a.zip hqemu-36802b6b1ed7887aeae5d027f86a969400f8824a.tar.gz | |
target-arm: Signal Underflow when denormal flushed to zero on output
On ARM the architecture mandates that when an output denormal is flushed to
zero we must set the FPSCR UFC (underflow) bit, so map softfloat's
float_flag_output_denormal accordingly.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
| -rw-r--r-- | target-arm/helper.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/target-arm/helper.c b/target-arm/helper.c index f072527..05b3ccc 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -2355,7 +2355,7 @@ static inline int vfp_exceptbits_from_host(int host_bits) target_bits |= 2; if (host_bits & float_flag_overflow) target_bits |= 4; - if (host_bits & float_flag_underflow) + if (host_bits & (float_flag_underflow | float_flag_output_denormal)) target_bits |= 8; if (host_bits & float_flag_inexact) target_bits |= 0x10; |
