diff options
| author | Alexander Graf <agraf@suse.de> | 2014-01-07 17:19:14 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2014-01-08 19:07:23 +0000 |
| commit | 52a1f6a3abb88ab875d5a70cec1048bb05e47263 (patch) | |
| tree | 982f8f4a2a442a66dd5050b57edfcb600dac3520 /target-arm/helper.c | |
| parent | 3c6a074a08ed3797624d4fb667564b9f3487eeaa (diff) | |
target-arm: A64: Add floating-point<->fixed-point instructions
This patch adds emulation for the instruction group labeled
"Floating-point <-> fixed-point conversions" in the ARM ARM.
Namely this includes the instructions SCVTF, UCVTF, FCVTZS, FCVTZU
(scalar, fixed-point).
Signed-off-by: Alexander Graf <agraf@suse.de>
[WN: Commit message tweak, rebased, updated to new infrastructure.
Applied bug fixes from Michael Matz and Janne Grunau.]
Signed-off-by: Will Newton <will.newton@linaro.org>
[PMM: significant cleanup]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target-arm/helper.c')
| -rw-r--r-- | target-arm/helper.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/target-arm/helper.c b/target-arm/helper.c index dcf6aa4712..2e76d0b093 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -4035,6 +4035,19 @@ VFP_CONV_FIX_A64(uq, s, 32, 64, uint64) #undef VFP_CONV_FIX_FLOAT #undef VFP_CONV_FLOAT_FIX_ROUND +/* Set the current fp rounding mode and return the old one. + * The argument is a softfloat float_round_ value. + */ +uint32_t HELPER(set_rmode)(uint32_t rmode, CPUARMState *env) +{ + float_status *fp_status = &env->vfp.fp_status; + + uint32_t prev_rmode = get_float_rounding_mode(fp_status); + set_float_rounding_mode(rmode, fp_status); + + return prev_rmode; +} + /* Half precision conversions. */ static float32 do_fcvt_f16_to_f32(uint32_t a, CPUARMState *env, float_status *s) { |