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[v5,7/7] target/riscv: machine: Add Control Transfer Record state description

Message ID 20241205-b4-ctr_upstream_v3-v5-7-60b993aa567d@rivosinc.com (mailing list archive)
State New
Headers show
Series target/riscv: Add support for Control Transfer Records Ext. | expand

Commit Message

Rajnesh Kanwal Dec. 5, 2024, 11:34 a.m. UTC 
Add a subsection to machine.c to migrate CTR CSR state

Signed-off-by: Rajnesh Kanwal <rkanwal@rivosinc.com>
---
 target/riscv/machine.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
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Patch

diff --git a/target/riscv/machine.c b/target/riscv/machine.c
index e1bdc31c7c53a8a4f539113d501c8e46f7a914e9..b67e660ef03b6053fa00d5a79e2ab20ecf3331b8 100644
--- a/target/riscv/machine.c
+++ b/target/riscv/machine.c
@@ -311,6 +311,30 @@  static const VMStateDescription vmstate_envcfg = {
     }
 };
 
+static bool ctr_needed(void *opaque)
+{
+    RISCVCPU *cpu = opaque;
+
+    return cpu->cfg.ext_smctr || cpu->cfg.ext_ssctr;
+}
+
+static const VMStateDescription vmstate_ctr = {
+    .name = "cpu/ctr",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .needed = ctr_needed,
+    .fields = (const VMStateField[]) {
+        VMSTATE_UINT64(env.mctrctl, RISCVCPU),
+        VMSTATE_UINT32(env.sctrdepth, RISCVCPU),
+        VMSTATE_UINT32(env.sctrstatus, RISCVCPU),
+        VMSTATE_UINT64(env.vsctrctl, RISCVCPU),
+        VMSTATE_UINT64_ARRAY(env.ctr_src, RISCVCPU, 16 << SCTRDEPTH_MAX),
+        VMSTATE_UINT64_ARRAY(env.ctr_dst, RISCVCPU, 16 << SCTRDEPTH_MAX),
+        VMSTATE_UINT64_ARRAY(env.ctr_data, RISCVCPU, 16 << SCTRDEPTH_MAX),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
 static bool pmu_needed(void *opaque)
 {
     RISCVCPU *cpu = opaque;
@@ -461,6 +485,7 @@  const VMStateDescription vmstate_riscv_cpu = {
         &vmstate_jvt,
         &vmstate_elp,
         &vmstate_ssp,
+        &vmstate_ctr,
         NULL
     }
 };