tests: arch: common: add stack_unwind test

Added test for archs that support it. It triggers an exception
and verify that the fatal message has stack unwind info.

Signed-off-by: Yong Cong Sin <[email protected]>

Author: ycsin

tests/arch/common/stack_unwind/CMakeLists.txt

@@ -0,0 +1,9 @@
+# Copyright (c) 2024 Meta
+# SPDX-License-Identifier: Apache-2.0
+
+cmake_minimum_required(VERSION 3.20.0)
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(stack_unwind_test)
+
+FILE(GLOB app_sources src/*.c)
+target_sources(app PRIVATE ${app_sources})

tests/arch/common/stack_unwind/prj.conf

@@ -0,0 +1,11 @@
+CONFIG_TEST=y
+
+CONFIG_LOG=y
+CONFIG_LOG_BUFFER_SIZE=2048
+
+CONFIG_EXCEPTION_STACK_TRACE=y
+CONFIG_OVERRIDE_FRAME_POINTER_DEFAULT=y
+CONFIG_OMIT_FRAME_POINTER=n
+CONFIG_DEBUG=y
+CONFIG_DEBUG_INFO=y
+CONFIG_DEBUG_OPTIMIZATIONS=y

tests/arch/common/stack_unwind/src/main.c

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2024 Meta
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <stdio.h>
+#include <stdbool.h>
+
+#include <zephyr/kernel.h>
+
+static void func1(int a);
+static void func2(int a);
+
+static void func2(int a)
+{
+	printf("%d: %s\n", a, __func__);
+
+	if (a >= 5) {
+		k_oops();
+	}
+
+	func1(a + 1);
+}
+
+static void func1(int a)
+{
+	printf("%d: %s\n", a, __func__);
+	func2(a + 1);
+}
+
+int main(void)
+{
+	printf("Hello World! %s\n", CONFIG_BOARD);
+
+	func1(1);
+
+	return 0;
+}

tests/arch/common/stack_unwind/testcase.yaml

@@ -0,0 +1,39 @@
+common:
+  harness: console
+  ignore_faults: true
+  ignore_qemu_crash: true
+  tags: kernel
+tests:
+  arch.common.stack_unwind.riscv:
+    arch_allow: riscv
+    integration_platforms:
+      - qemu_riscv32
+      - qemu_riscv64
+    harness_config:
+      type: multi_line
+      regex:
+        - "E: call trace:"
+        - "E:       0: fp: \\w+   ra: \\w+"
+        - "E:       1: fp: \\w+   ra: \\w+"
+  arch.common.stack_unwind.x86:
+    arch_allow: x86
+    extra_configs:
+      - CONFIG_NO_OPTIMIZATIONS=y
+    integration_platforms:
+      - qemu_x86
+      - qemu_x86_64
+    harness_config:
+      type: multi_line
+      regex:
+        - "E: call trace:"
+        - "E: (E|R)IP: \\w+"
+  arch.common.stack_unwind.arm:
+    arch_allow:
+      - arm64
+    integration_platforms:
+      - qemu_cortex_a53
+    harness_config:
+      type: multi_line
+      regex:
+        - "E: backtrace  0: fp: \\w+ lr: \\w+"
+        - "E: backtrace  1: fp: \\w+ lr: \\w+"