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target/arm: Implement VFP fp16 VCVT between float and fixed-point

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Implement the fp16 versions of the VFP VCVT instruction forms which
convert between floating point and fixed-point.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200828183354.27913-16-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2020-08-28 19:33:24 +01:00
parent 414ba270c4
commit a149e2de0b
2 changed files with 61 additions and 0 deletions
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target/arm/vfp.decode
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@ -225,6 +225,8 @@ VJCVT ---- 1110 1.11 1001 .... 1011 11.0 .... @vfp_dm_sd
# We assemble bits 18 (op), 16 (u) and 7 (sx) into a single opc field
# for the convenience of the trans_VCVT_fix functions.
%vcvt_fix_op 18:1 16:1 7:1
VCVT_fix_hp ---- 1110 1.11 1.1. .... 1001 .1.0 .... \
vd=%vd_sp imm=%vm_sp opc=%vcvt_fix_op
VCVT_fix_sp ---- 1110 1.11 1.1. .... 1010 .1.0 .... \
vd=%vd_sp imm=%vm_sp opc=%vcvt_fix_op
VCVT_fix_dp ---- 1110 1.11 1.1. .... 1011 .1.0 .... \