[V2,4/5] target/riscv: Add V extension state description

Commit Message

Yifei Jiang Oct. 10, 2020, 8:06 a.m. UTC

In the case of supporting V extension, add V extension description
to vmstate_riscv_cpu.

Signed-off-by: Yifei Jiang <[e-mail]>
Signed-off-by: Yipeng Yin <[e-mail]>
Reviewed-by: Richard Henderson <[e-mail]>
---
 target/riscv/machine.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

Patch

diff --git a/target/riscv/machine.c b/target/riscv/machine.c
index af599bf001..2bd3a7b5b0 100644
--- a/target/riscv/machine.c
+++ b/target/riscv/machine.c
@@ -76,6 +76,30 @@  static bool hyper_needed(void *opaque)
     return riscv_has_ext(env, RVH);
 }
 
+static bool vector_needed(void *opaque)
+{
+    RISCVCPU *cpu = opaque;
+    CPURISCVState *env = &cpu->env;
+
+    return riscv_has_ext(env, RVV);
+}
+
+static const VMStateDescription vmstate_vector = {
+    .name = "cpu/vector",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .needed = vector_needed,
+    .fields = (VMStateField[]) {
+            VMSTATE_UINT64_ARRAY(env.vreg, RISCVCPU, 32 * RV_VLEN_MAX / 64),
+            VMSTATE_UINTTL(env.vxrm, RISCVCPU),
+            VMSTATE_UINTTL(env.vxsat, RISCVCPU),
+            VMSTATE_UINTTL(env.vl, RISCVCPU),
+            VMSTATE_UINTTL(env.vstart, RISCVCPU),
+            VMSTATE_UINTTL(env.vtype, RISCVCPU),
+            VMSTATE_END_OF_LIST()
+        }
+};
+
 static const VMStateDescription vmstate_hyper = {
     .name = "cpu/hyper",
     .version_id = 1,
@@ -173,6 +197,7 @@  const VMStateDescription vmstate_riscv_cpu = {
     .subsections = (const VMStateDescription * []) {
         &vmstate_pmp,
         &vmstate_hyper,
+        &vmstate_vector,
         NULL
     }
 };