@@ -422,6 +422,13 @@ Vimm_1r 1111 001 . 1 . 000 ... .... cmode:4 0 . op:1 1 .... @1reg_imm
VTBL 1111 001 1 1 . 11 .... .... 10 len:2 . op:1 . 0 .... \
vm=%vm_dp vn=%vn_dp vd=%vd_dp
+
+ VDUP_scalar 1111 001 1 1 . 11 index:3 1 .... 11 000 q:1 . 0 .... \
+ vm=%vm_dp vd=%vd_dp size=0
+ VDUP_scalar 1111 001 1 1 . 11 index:2 10 .... 11 000 q:1 . 0 .... \
+ vm=%vm_dp vd=%vd_dp size=1
+ VDUP_scalar 1111 001 1 1 . 11 index:1 100 .... 11 000 q:1 . 0 .... \
+ vm=%vm_dp vd=%vd_dp size=2
]
# Subgroup for size != 0b11
@@ -2944,3 +2944,29 @@ static bool trans_VTBL(DisasContext *s, arg_VTBL *a)
tcg_temp_free_i32(tmp);
return true;
}
+
+static bool trans_VDUP_scalar(DisasContext *s, arg_VDUP_scalar *a)
+{
+ if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
+ return false;
+ }
+
+ /* UNDEF accesses to D16-D31 if they don't exist. */
+ if (!dc_isar_feature(aa32_simd_r32, s) &&
+ ((a->vd | a->vm) & 0x10)) {
+ return false;
+ }
+
+ if (a->vd & a->q) {
+ return false;
+ }
+
+ if (!vfp_access_check(s)) {
+ return true;
+ }
+
+ tcg_gen_gvec_dup_mem(a->size, neon_reg_offset(a->vd, 0),
+ neon_element_offset(a->vm, a->index, a->size),
+ a->q ? 16 : 8, a->q ? 16 : 8);
+ return true;
+}
@@ -5574,31 +5574,8 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
}
break;
}
- } else if ((insn & (1 << 10)) == 0) {
- /* VTBL, VTBX: handled by decodetree */
- return 1;
- } else if ((insn & 0x380) == 0) {
- /* VDUP */
- int element;
- MemOp size;
-
- if ((insn & (7 << 16)) == 0 || (q && (rd & 1))) {
- return 1;
- }
- if (insn & (1 << 16)) {
- size = MO_8;
- element = (insn >> 17) & 7;
- } else if (insn & (1 << 17)) {
- size = MO_16;
- element = (insn >> 18) & 3;
- } else {
- size = MO_32;
- element = (insn >> 19) & 1;
- }
- tcg_gen_gvec_dup_mem(size, neon_reg_offset(rd, 0),
- neon_element_offset(rm, element, size),
- q ? 16 : 8, q ? 16 : 8);
} else {
+ /* VTBL, VTBX, VDUP: handled by decodetree */
return 1;
}
}
Convert the Neon VDUP (scalar) insn to decodetree. (Note that we can't call this just "VDUP" as we used that already in vfp.decode for the "VDUP (general purpose register" insn.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/neon-dp.decode | 7 +++++++ target/arm/translate-neon.inc.c | 26 ++++++++++++++++++++++++++ target/arm/translate.c | 25 +------------------------ 3 files changed, 34 insertions(+), 24 deletions(-)