diff options
| author | Paul Brook | 2009-11-19 17:45:20 +0100 |
|---|---|---|
| committer | Paul Brook | 2009-11-19 17:45:20 +0100 |
| commit | 600114988cb1beede13ce29dec65398f3e62e510 (patch) | |
| tree | 937055725aba7c29b402b927066333e2f8debf61 /target-arm/helper.c | |
| parent | Built network devices once (diff) | |
| download | qemu-600114988cb1beede13ce29dec65398f3e62e510.tar.gz qemu-600114988cb1beede13ce29dec65398f3e62e510.tar.xz qemu-600114988cb1beede13ce29dec65398f3e62e510.zip | |
ARM FP16 support
Implement the ARM VFP half precision floating point extensions.
Signed-off-by: Paul Brook <paul@codesourcery.com>
Diffstat (limited to 'target-arm/helper.c')
| -rw-r--r-- | target-arm/helper.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/target-arm/helper.c b/target-arm/helper.c index 5e10533f1c..cb95c6eaba 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -115,6 +115,7 @@ static void cpu_reset_model_id(CPUARMState *env, uint32_t id) set_feature(env, ARM_FEATURE_THUMB2); set_feature(env, ARM_FEATURE_VFP); set_feature(env, ARM_FEATURE_VFP3); + set_feature(env, ARM_FEATURE_VFP_FP16); set_feature(env, ARM_FEATURE_NEON); set_feature(env, ARM_FEATURE_THUMB2EE); set_feature(env, ARM_FEATURE_DIV); @@ -2568,6 +2569,21 @@ VFP_CONV_FIX(uh, s, float32, uint16, u) VFP_CONV_FIX(ul, s, float32, uint32, u) #undef VFP_CONV_FIX +/* Half precision conversions. */ +float32 HELPER(vfp_fcvt_f16_to_f32)(uint32_t a, CPUState *env) +{ + float_status *s = &env->vfp.fp_status; + int ieee = (env->vfp.xregs[ARM_VFP_FPSCR] & (1 << 26)) == 0; + return float16_to_float32(a, ieee, s); +} + +uint32_t HELPER(vfp_fcvt_f32_to_f16)(float32 a, CPUState *env) +{ + float_status *s = &env->vfp.fp_status; + int ieee = (env->vfp.xregs[ARM_VFP_FPSCR] & (1 << 26)) == 0; + return float32_to_float16(a, ieee, s); +} + float32 HELPER(recps_f32)(float32 a, float32 b, CPUState *env) { float_status *s = &env->vfp.fp_status; |