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| author | Richard Henderson <richard.henderson@linaro.org> | 2018-08-16 14:05:29 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2018-08-16 14:29:58 +0100 |
| commit | 0b62159be33d45d00dfa34a317c6d3da30ffb480 (patch) | |
| tree | 253ac99a8ac3073cdb2acdea41c0e08787808399 /target/arm/helper.c | |
| parent | ebe31c0a8ef7b59fd96171fe694339ce69ee24a6 (diff) | |
| download | focaccia-qemu-0b62159be33d45d00dfa34a317c6d3da30ffb480.tar.gz focaccia-qemu-0b62159be33d45d00dfa34a317c6d3da30ffb480.zip | |
target/arm: Adjust FPCR_MASK for FZ16
When support for FZ16 was added, we failed to include the bit within FPCR_MASK, which means that it could never be set. Continue to zero FZ16 when ARMv8.2-FP16 is not enabled. Fixes: d81ce0ef2c4 Cc: qemu-stable@nongnu.org (3.0.1) Reported-by: Laurent Desnogues <laurent.desnogues@gmail.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Laurent Desnogues <laurent.desnogues@gmail.com> Tested-by: Laurent Desnogues <laurent.desnogues@gmail.com> Message-id: 20180810193129.1556-2-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target/arm/helper.c')
| -rw-r--r-- | target/arm/helper.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/target/arm/helper.c b/target/arm/helper.c index 873a0c215d..0fc6d2e213 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -11349,6 +11349,11 @@ void HELPER(vfp_set_fpscr)(CPUARMState *env, uint32_t val) int i; uint32_t changed; + /* When ARMv8.2-FP16 is not supported, FZ16 is RES0. */ + if (!arm_feature(env, ARM_FEATURE_V8_FP16)) { + val &= ~FPCR_FZ16; + } + changed = env->vfp.xregs[ARM_VFP_FPSCR]; env->vfp.xregs[ARM_VFP_FPSCR] = (val & 0xffc8ffff); env->vfp.vec_len = (val >> 16) & 7; |