[PATCH 2/5] target/riscv: Add PMP state description

[Yifei Jiang]

In the case of supporting PMP feature, add PMP state description
to vmstate_riscv_cpu.

Signed-off-by: Yifei Jiang <jiangyifei@huawei.com>
Signed-off-by: Yipeng Yin <yinyipeng1@huawei.com>
---
 target/riscv/machine.c | 49 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)

diff --git a/target/riscv/machine.c b/target/riscv/machine.c
index 3451b888b1..b1fc839b43 100644
--- a/target/riscv/machine.c
+++ b/target/riscv/machine.c
@@ -4,6 +4,51 @@
 #include "sysemu/kvm.h"
 #include "migration/cpu.h"
 
+static bool pmp_needed(void *opaque)
+{
+    RISCVCPU *cpu = opaque;
+    CPURISCVState *env = &cpu->env;
+
+    return riscv_feature(env, RISCV_FEATURE_PMP);
+}
+
+static const VMStateDescription vmstate_pmp_entry = {
+    .name = "cpu/pmp/entry",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .fields = (VMStateField[]) {
+        VMSTATE_UINTTL(addr_reg, pmp_entry_t),
+        VMSTATE_UINT8(cfg_reg, pmp_entry_t),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static const VMStateDescription vmstate_pmp_addr = {
+    .name = "cpu/pmp/addr",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .fields = (VMStateField[]) {
+        VMSTATE_UINTTL(sa, pmp_addr_t),
+        VMSTATE_UINTTL(ea, pmp_addr_t),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static const VMStateDescription vmstate_pmp = {
+    .name = "cpu/pmp",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .needed = pmp_needed,
+    .fields = (VMStateField[]) {
+        VMSTATE_STRUCT_ARRAY(env.pmp_state.pmp, RISCVCPU, MAX_RISCV_PMPS,
+                             0, vmstate_pmp_entry, pmp_entry_t),
+        VMSTATE_STRUCT_ARRAY(env.pmp_state.addr, RISCVCPU, MAX_RISCV_PMPS,
+                             0, vmstate_pmp_addr, pmp_addr_t),
+        VMSTATE_UINT32(env.pmp_state.num_rules, RISCVCPU),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
 const VMStateDescription vmstate_riscv_cpu = {
     .name = "cpu",
     .version_id = 1,
@@ -55,5 +100,9 @@ const VMStateDescription vmstate_riscv_cpu = {
         VMSTATE_UINTTL(env.mstatush, RISCVCPU),
 #endif
         VMSTATE_END_OF_LIST()
+    },
+    .subsections = (const VMStateDescription * []) {
+        &vmstate_pmp,
+        NULL
     }
 };
-- 
2.19.1