Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
target/arm/tcg/translate-a64.c | 74 ++++++++++++----------------------
target/arm/tcg/a64.decode | 4 ++
2 files changed, 30 insertions(+), 48 deletions(-)
diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c
index aec2f6a542..0e290062ef 100644
--- a/target/arm/tcg/translate-a64.c
+++ b/target/arm/tcg/translate-a64.c
@@ -6888,6 +6888,31 @@ TRANS(FMINNMV_s, do_fp_reduction, a, gen_helper_vfp_minnums)
TRANS(FMAXV_s, do_fp_reduction, a, gen_helper_vfp_maxs)
TRANS(FMINV_s, do_fp_reduction, a, gen_helper_vfp_mins)
+/*
+ * Floating-point Immediate
+ */
+
+static bool trans_FMOVI_s(DisasContext *s, arg_FMOVI_s *a)
+{
+ switch (a->esz) {
+ case MO_32:
+ case MO_64:
+ break;
+ case MO_16:
+ if (!dc_isar_feature(aa64_fp16, s)) {
+ return false;
+ }
+ break;
+ default:
+ return false;
+ }
+ if (fp_access_check(s)) {
+ uint64_t imm = vfp_expand_imm(a->esz, a->imm);
+ write_fp_dreg(s, a->rd, tcg_constant_i64(imm));
+ }
+ return true;
+}
+
/* Shift a TCGv src by TCGv shift_amount, put result in dst.
* Note that it is the caller's responsibility to ensure that the
* shift amount is in range (ie 0..31 or 0..63) and provide the ARM
@@ -8625,53 +8650,6 @@ static void disas_fp_1src(DisasContext *s, uint32_t insn)
}
}
-/* Floating point immediate
- * 31 30 29 28 24 23 22 21 20 13 12 10 9 5 4 0
- * +---+---+---+-----------+------+---+------------+-------+------+------+
- * | M | 0 | S | 1 1 1 1 0 | type | 1 | imm8 | 1 0 0 | imm5 | Rd |
- * +---+---+---+-----------+------+---+------------+-------+------+------+
- */
-static void disas_fp_imm(DisasContext *s, uint32_t insn)
-{
- int rd = extract32(insn, 0, 5);
- int imm5 = extract32(insn, 5, 5);
- int imm8 = extract32(insn, 13, 8);
- int type = extract32(insn, 22, 2);
- int mos = extract32(insn, 29, 3);
- uint64_t imm;
- MemOp sz;
-
- if (mos || imm5) {
- unallocated_encoding(s);
- return;
- }
-
- switch (type) {
- case 0:
- sz = MO_32;
- break;
- case 1:
- sz = MO_64;
- break;
- case 3:
- sz = MO_16;
- if (dc_isar_feature(aa64_fp16, s)) {
- break;
- }
- /* fallthru */
- default:
- unallocated_encoding(s);
- return;
- }
-
- if (!fp_access_check(s)) {
- return;
- }
-
- imm = vfp_expand_imm(sz, imm8);
- write_fp_dreg(s, rd, tcg_constant_i64(imm));
-}
-
/* Handle floating point <=> fixed point conversions. Note that we can
* also deal with fp <=> integer conversions as a special case (scale == 64)
* OPTME: consider handling that special case specially or at least skipping
@@ -9091,7 +9069,7 @@ static void disas_data_proc_fp(DisasContext *s, uint32_t insn)
switch (ctz32(extract32(insn, 12, 4))) {
case 0: /* [15:12] == xxx1 */
/* Floating point immediate */
- disas_fp_imm(s, insn);
+ unallocated_encoding(s); /* in decodetree */
break;
case 1: /* [15:12] == xx10 */
/* Floating point compare */
diff --git a/target/arm/tcg/a64.decode b/target/arm/tcg/a64.decode
index c77f9fc987..e11e293631 100644
--- a/target/arm/tcg/a64.decode
+++ b/target/arm/tcg/a64.decode
@@ -1180,3 +1180,7 @@ FMAXV_s 0110 1110 00 11000 01111 10 ..... ..... @rr_q1e2
FMINV_h 0.00 1110 10 11000 01111 10 ..... ..... @qrr_h
FMINV_s 0110 1110 10 11000 01111 10 ..... ..... @rr_q1e2
+
+# Floating-point Immediate
+
+FMOVI_s 0001 1110 .. 1 imm:8 100 00000 rd:5 esz=%esz_hsd
--
2.43.0