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authorPeter Maydell <peter.maydell@linaro.org>2014-03-07 15:22:24 +0000
committerPeter Maydell <peter.maydell@linaro.org>2014-03-09 11:52:42 +0000
commit1566d3d34c324733de1b50bbe3bb1e83b1807c25 (patch)
tree73a932d294e95e1be650e70011163ae4a7dbbb15
parent74ef197f9b0727cf51027694939925131172f277 (diff)
downloadqemu-arm-1566d3d34c324733de1b50bbe3bb1e83b1807c25.tar.gz
target-arm: A64: Implement SHLL, SHLL2
Implement the SHLL and SHLL2 instructions from the 2-reg-misc category. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-rw-r--r--target-arm/translate-a64.c32
1 files changed, 31 insertions, 1 deletions
diff --git a/target-arm/translate-a64.c b/target-arm/translate-a64.c
index 93da19b156..ccc449ea90 100644
--- a/target-arm/translate-a64.c
+++ b/target-arm/translate-a64.c
@@ -8529,6 +8529,36 @@ static void handle_2misc_pairwise(DisasContext *s, int opcode, bool u,
}
}
+static void handle_shll(DisasContext *s, bool is_q, int size, int rn, int rd)
+{
+ /* Implement SHLL and SHLL2 */
+ int pass;
+ int part = is_q ? 2 : 0;
+ TCGv_i64 tcg_res[2];
+
+ for (pass = 0; pass < 2; pass++) {
+ static NeonGenWidenFn * const widenfns[3] = {
+ gen_helper_neon_widen_u8,
+ gen_helper_neon_widen_u16,
+ tcg_gen_extu_i32_i64,
+ };
+ NeonGenWidenFn *widenfn = widenfns[size];
+ TCGv_i32 tcg_op = tcg_temp_new_i32();
+
+ read_vec_element_i32(s, tcg_op, rn, part + pass, MO_32);
+ tcg_res[pass] = tcg_temp_new_i64();
+ widenfn(tcg_res[pass], tcg_op);
+ tcg_gen_shli_i64(tcg_res[pass], tcg_res[pass], 8 << size);
+
+ tcg_temp_free_i32(tcg_op);
+ }
+
+ for (pass = 0; pass < 2; pass++) {
+ write_vec_element(s, tcg_res[pass], rd, pass, MO_64);
+ tcg_temp_free_i64(tcg_res[pass]);
+ }
+}
+
/* C3.6.17 AdvSIMD two reg misc
* 31 30 29 28 24 23 22 21 17 16 12 11 10 9 5 4 0
* +---+---+---+-----------+------+-----------+--------+-----+------+------+
@@ -8590,7 +8620,7 @@ static void disas_simd_two_reg_misc(DisasContext *s, uint32_t insn)
unallocated_encoding(s);
return;
}
- unsupported_encoding(s, insn);
+ handle_shll(s, is_q, size, rn, rd);
return;
case 0xa: /* CMLT */
if (u == 1) {