debug: arc: expose thread relinquish cause

When a thread is preempted on ARC, caller-saved registers are saved on the stack automatically (RIRQ) or manually by the kernel ISR (FIRQ). Exposing the thread's relinquish cause hints the debugger that it can read more or less register values. Signed-off-by: Bruno Mendes <[email protected]>
zephyrproject-rtos · Aug 3, 2023 · 33701e1 · 33701e1
1 parent 6dc3a65
commit 33701e1
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diff --git a/scripts/west_commands/tests/nrf/generated_nrfutil_batch.json b/scripts/west_commands/tests/nrf/generated_nrfutil_batch.json
@@ -0,0 +1,38 @@
+{
+    "family": "NRF53_FAMILY",
+    "operations": [
+        {
+            "operation": {
+                "type": "recover"
+            },
+            "core": "NRFDL_DEVICE_CORE_NETWORK",
+            "operationId": "1"
+        },
+        {
+            "operation": {
+                "type": "recover"
+            },
+            "operationId": "2"
+        },
+        {
+            "operation": {
+                "type": "program",
+                "firmware": {
+                    "file": "/home/mendesb/zephyrproject/zephyr/scripts/west_commands/tests/nrf/nrf5340_net_only.hex",
+                    "format": "NRFDL_FW_INTEL_HEX"
+                },
+                "chip_erase_mode": "ERASE_ALL",
+                "verify": "VERIFY_READ"
+            },
+            "core": "NRFDL_DEVICE_CORE_NETWORK",
+            "operationId": "3"
+        },
+        {
+            "operation": {
+                "type": "reset",
+                "option": "RESET_SYSTEM"
+            },
+            "operationId": "4"
+        }
+    ]
+}
diff --git a/subsys/debug/thread_info.c b/subsys/debug/thread_info.c
@@ -24,6 +24,7 @@ enum {
 	THREAD_INFO_OFFSET_T_PREEMPT_FLOAT,
 	THREAD_INFO_OFFSET_T_COOP_FLOAT,
 	THREAD_INFO_OFFSET_T_ARM_EXC_RETURN,
+	THREAD_INFO_OFFSET_T_ARC_RELINQUISH_CAUSE,
 };
 
 #if CONFIG_MP_MAX_NUM_CPUS > 1
@@ -137,7 +138,14 @@ size_t _kernel_thread_info_offsets[] = {
 #else
 	[THREAD_INFO_OFFSET_T_ARM_EXC_RETURN] = THREAD_INFO_UNIMPLEMENTED,
 #endif /* CONFIG_ARM_STORE_EXC_RETURN */
+#if defined(CONFIG_ARC)
+	[THREAD_INFO_OFFSET_T_ARC_RELINQUISH_CAUSE] = offsetof(struct _thread_arch,
+						relinquish_cause),
+#else
+	[THREAD_INFO_OFFSET_T_ARC_RELINQUISH_CAUSE] = THREAD_INFO_UNIMPLEMENTED,
+#endif /* CONFIG_ARC */
 };
+
 extern size_t __attribute__((alias("_kernel_thread_info_offsets")))
 		_kernel_openocd_offsets;