From: Weiwei Li <liweiwei@iscas.ac.cn>
The spec for vmv<nf>r.v says: 'the instructions operate as if EEW=SEW,
EMUL = NREG, effective length evl= EMUL * VLEN/SEW.'
So the start byte for vstart != 0 should take sew into account
Signed-off-by: Weiwei Li <liweiwei@iscas.ac.cn>
Signed-off-by: Junqiang Wang <wangjunqiang@iscas.ac.cn>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20220330021316.18223-1-liweiwei@iscas.ac.cn>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---
target/riscv/vector_helper.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c
index 99f3134aa0..576b14e5a3 100644
--- a/target/riscv/vector_helper.c
+++ b/target/riscv/vector_helper.c
@@ -4890,13 +4890,15 @@ GEN_VEXT_VCOMPRESS_VM(vcompress_vm_d, uint64_t, H8)
/* Vector Whole Register Move */
void HELPER(vmvr_v)(void *vd, void *vs2, CPURISCVState *env, uint32_t desc)
{
- /* EEW = 8 */
+ /* EEW = SEW */
uint32_t maxsz = simd_maxsz(desc);
- uint32_t i = env->vstart;
+ uint32_t sewb = 1 << FIELD_EX64(env->vtype, VTYPE, VSEW);
+ uint32_t startb = env->vstart * sewb;
+ uint32_t i = startb;
memcpy((uint8_t *)vd + H1(i),
(uint8_t *)vs2 + H1(i),
- maxsz - env->vstart);
+ maxsz - startb);
env->vstart = 0;
}
--
2.35.1