diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2021-09-01 09:02:38 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2021-09-01 11:08:17 +0100 |
| commit | 2a4b939cf865fe5edd0f3dccf1b4ba6c3ca8b904 (patch) | |
| tree | 71361f49efe6f7ddcb9519da79c46dfc97710afc /target/arm/mve_helper.c | |
| parent | c2d8f6bb28ffc5c9e4e465604ccdf7a08b7e3568 (diff) | |
target/arm: Implement MVE VCVT between floating and fixed point
Implement the MVE VCVT insns which convert between floating and fixed
point. As with the Neon equivalents, these use essentially the same
constant encoding as right-shift-by-immediate.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'target/arm/mve_helper.c')
| -rw-r--r-- | target/arm/mve_helper.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/target/arm/mve_helper.c b/target/arm/mve_helper.c index 891926c124..d829ffe12d 100644 --- a/target/arm/mve_helper.c +++ b/target/arm/mve_helper.c @@ -3258,3 +3258,39 @@ DO_VCMP_FP_BOTH(vfcmpgts, vfcmpgt_scalars, 4, float32, DO_GT32) DO_VCMP_FP_BOTH(vfcmpleh, vfcmple_scalarh, 2, float16, !DO_GT16) DO_VCMP_FP_BOTH(vfcmples, vfcmple_scalars, 4, float32, !DO_GT32) + +#define DO_VCVT_FIXED(OP, ESIZE, TYPE, FN) \ + void HELPER(glue(mve_, OP))(CPUARMState *env, void *vd, void *vm, \ + uint32_t shift) \ + { \ + TYPE *d = vd, *m = vm; \ + TYPE r; \ + uint16_t mask = mve_element_mask(env); \ + unsigned e; \ + float_status *fpst; \ + float_status scratch_fpst; \ + for (e = 0; e < 16 / ESIZE; e++, mask >>= ESIZE) { \ + if ((mask & MAKE_64BIT_MASK(0, ESIZE)) == 0) { \ + continue; \ + } \ + fpst = (ESIZE == 2) ? &env->vfp.standard_fp_status_f16 : \ + &env->vfp.standard_fp_status; \ + if (!(mask & 1)) { \ + /* We need the result but without updating flags */ \ + scratch_fpst = *fpst; \ + fpst = &scratch_fpst; \ + } \ + r = FN(m[H##ESIZE(e)], shift, fpst); \ + mergemask(&d[H##ESIZE(e)], r, mask); \ + } \ + mve_advance_vpt(env); \ + } + +DO_VCVT_FIXED(vcvt_sh, 2, int16_t, helper_vfp_shtoh) +DO_VCVT_FIXED(vcvt_uh, 2, uint16_t, helper_vfp_uhtoh) +DO_VCVT_FIXED(vcvt_hs, 2, int16_t, helper_vfp_toshh_round_to_zero) +DO_VCVT_FIXED(vcvt_hu, 2, uint16_t, helper_vfp_touhh_round_to_zero) +DO_VCVT_FIXED(vcvt_sf, 4, int32_t, helper_vfp_sltos) +DO_VCVT_FIXED(vcvt_uf, 4, uint32_t, helper_vfp_ultos) +DO_VCVT_FIXED(vcvt_fs, 4, int32_t, helper_vfp_tosls_round_to_zero) +DO_VCVT_FIXED(vcvt_fu, 4, uint32_t, helper_vfp_touls_round_to_zero) |