[PATCH 1/2] target/riscv: Add vill check for whole vector register move instructions

[Max Chou]

The ratified version of RISC-V V spec section 16.6 says that
`The instructions operate as if EEW=SEW`.

So the whole vector register move instructions depend on the vtype
register that means the whole vector register move instructions should
raise an illegal-instruction exception when vtype.vill=1.

Signed-off-by: Max Chou <max.chou@sifive.com>
---
 target/riscv/insn_trans/trans_rvv.c.inc | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/target/riscv/insn_trans/trans_rvv.c.inc 
b/target/riscv/insn_trans/trans_rvv.c.inc
index 78bd363310d..114ad87397f 100644
--- a/target/riscv/insn_trans/trans_rvv.c.inc
+++ b/target/riscv/insn_trans/trans_rvv.c.inc
@@ -3631,13 +3631,14 @@ static bool trans_vcompress_vm(DisasContext *s, arg_r 
*a)
 }
 
 /*
- * Whole Vector Register Move Instructions ignore vtype and vl setting.
- * Thus, we don't need to check vill bit. (Section 16.6)
+ * Whole Vector Register Move Instructions depend on vtype register(vsew).
+ * Thus, we need to check vill bit. (Section 16.6)
  */
 #define GEN_VMV_WHOLE_TRANS(NAME, LEN)                             \
 static bool trans_##NAME(DisasContext *s, arg_##NAME * a)               \
 {                                                                       \
     if (require_rvv(s) &&                                               \
+        vext_check_isa_ill(s) &&                                        \
         QEMU_IS_ALIGNED(a->rd, LEN) &&                                  \
         QEMU_IS_ALIGNED(a->rs2, LEN)) {                                 \
         uint32_t maxsz = (s->cfg_ptr->vlen >> 3) * LEN;                 \
-- 
2.34.1