From 05b4e47b7463bf0cf8a395c63f94869dfdf8b22d Mon Sep 17 00:00:00 2001
From: Brian Cain <bcain@quicinc.com>
Date: Mon, 22 Jun 2026 15:28:08 -0700
Subject: [PATCH] target/hexagon: Add vmstate representation
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Reviewed-by: Taylor Simpson <ltaylorsimpson@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Brian Cain <brian.cain@oss.qualcomm.com>
---
 target/hexagon/cpu.c      |  3 +++
 target/hexagon/internal.h |  4 ++++
 target/hexagon/machine.c  | 32 ++++++++++++++++++++++++++++++++
 3 files changed, 39 insertions(+)
 create mode 100644 target/hexagon/machine.c

diff --git a/target/hexagon/cpu.c b/target/hexagon/cpu.c
index d30e5b64ea..3059196bca 100644
--- a/target/hexagon/cpu.c
+++ b/target/hexagon/cpu.c
@@ -382,6 +382,9 @@ static void hexagon_cpu_class_init(ObjectClass *c, const void *data)
     cc->gdb_stop_before_watchpoint = true;
     cc->gdb_core_xml_file = "hexagon-core.xml";
     cc->disas_set_info = hexagon_cpu_disas_set_info;
+#ifndef CONFIG_USER_ONLY
+    dc->vmsd = &vmstate_hexagon_cpu;
+#endif
     cc->tcg_ops = &hexagon_tcg_ops;
 }
 
diff --git a/target/hexagon/internal.h b/target/hexagon/internal.h
index 5fc837ae22..cd06ff41d4 100644
--- a/target/hexagon/internal.h
+++ b/target/hexagon/internal.h
@@ -31,4 +31,8 @@ void hexagon_debug(CPUHexagonState *env);
 
 extern const char * const hexagon_regnames[TOTAL_PER_THREAD_REGS];
 
+#ifndef CONFIG_USER_ONLY
+extern const VMStateDescription vmstate_hexagon_cpu;
+#endif
+
 #endif
diff --git a/target/hexagon/machine.c b/target/hexagon/machine.c
new file mode 100644
index 0000000000..2dd95466e7
--- /dev/null
+++ b/target/hexagon/machine.c
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "qemu/osdep.h"
+#include "migration/vmstate.h"
+#include "cpu.h"
+
+const VMStateDescription vmstate_hexagon_cpu = {
+    .name = "cpu",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .fields = (const VMStateField[]) {
+        VMSTATE_UINT32_ARRAY(env.gpr, HexagonCPU, TOTAL_PER_THREAD_REGS),
+        VMSTATE_UINT32_ARRAY(env.pred, HexagonCPU, NUM_PREGS),
+        VMSTATE_UINT32_ARRAY(env.t_sreg, HexagonCPU, NUM_SREGS),
+        VMSTATE_UINT32_ARRAY(env.greg, HexagonCPU, NUM_GREGS),
+        VMSTATE_UINT32(env.next_PC, HexagonCPU),
+        VMSTATE_UINT32(env.tlb_lock_state, HexagonCPU),
+        VMSTATE_UINT32(env.k0_lock_state, HexagonCPU),
+        VMSTATE_UINT32(env.tlb_lock_count, HexagonCPU),
+        VMSTATE_UINT32(env.k0_lock_count, HexagonCPU),
+        VMSTATE_UINT32(env.threadId, HexagonCPU),
+        VMSTATE_UINT32(env.cause_code, HexagonCPU),
+        VMSTATE_UINT32(env.wait_next_pc, HexagonCPU),
+        VMSTATE_UINT64(env.t_cycle_count, HexagonCPU),
+
+        VMSTATE_END_OF_LIST()
+    },
+};