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target/arm: Implement VFP fp16 for VMOV immediate

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Implement VFP fp16 support for the VMOV immediate insn.

Backports commit 28c28728e53c9f4c13a5cd50f313788c7ec2f9ad
This commit is contained in:
Peter Maydell 2021-02-28 04:51:08 -05:00 committed by Lioncash
parent 2d9abf7c0b
commit 25d95570f3
2 changed files with 25 additions and 0 deletions
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23
qemu/target/arm/translate-vfp.inc.c
View file

@ -2188,6 +2188,29 @@ MAKE_VFM_TRANS_FNS(hp)
MAKE_VFM_TRANS_FNS(sp)
MAKE_VFM_TRANS_FNS(dp)
static bool trans_VMOV_imm_hp(DisasContext *s, arg_VMOV_imm_sp *a)
{
TCGv_i32 fd;
TCGContext *tcg_ctx = s->uc->tcg_ctx;
if (!dc_isar_feature(aa32_fp16_arith, s)) {
return false;
}
if (s->vec_len != 0 || s->vec_stride != 0) {
return false;
}
if (!vfp_access_check(s)) {
return true;
}
fd = tcg_const_i32(tcg_ctx, vfp_expand_imm(MO_16, a->imm));
neon_store_reg32(s, fd, a->vd);
tcg_temp_free_i32(tcg_ctx, fd);
return true;
}
static bool trans_VMOV_imm_sp(DisasContext *s, arg_VMOV_imm_sp *a)
{
TCGContext *tcg_ctx = s->uc->tcg_ctx;

2
qemu/target/arm/vfp.decode
View file

@ -154,6 +154,8 @@ VFMS_dp ---- 1110 1.10 .... .... 1011 .1.0 .... @vfp_dnm_d
VFNMA_dp ---- 1110 1.01 .... .... 1011 .0.0 .... @vfp_dnm_d
VFNMS_dp ---- 1110 1.01 .... .... 1011 .1.0 .... @vfp_dnm_d
VMOV_imm_hp ---- 1110 1.11 .... .... 1001 0000 .... \
vd=%vd_sp imm=%vmov_imm
VMOV_imm_sp ---- 1110 1.11 .... .... 1010 0000 .... \
vd=%vd_sp imm=%vmov_imm
VMOV_imm_dp ---- 1110 1.11 .... .... 1011 0000 .... \