4  * SPDX-License-Identifier: Apache-2.0
36 	*start_addr = (char *)k_current_get()->stack_info.start;  in z_impl_stack_info_get()
37 	*size = k_current_get()->stack_info.size;  in z_impl_stack_info_get()
123 	printk("   - Thread reports buffer %p size %zu\n", stack_start,  in stack_buffer_scenarios()
149 	zassert_true(STEST_STACKSIZE <= (obj_size - reserved),  in stack_buffer_scenarios()
166 	printk("   - check read/write to stack buffer\n");  in stack_buffer_scenarios()
187 		/* If we're in user mode, check every byte in the stack buffer  in stack_buffer_scenarios()
201 		zassert_true(check_perms(stack_start - 1, 1, 0),  in stack_buffer_scenarios()
202 			     "user mode access to memory %p before start of stack object",  in stack_buffer_scenarios()
203 			     obj_start - 1);  in stack_buffer_scenarios()
205 			     "user mode access to memory %p past end of stack object",  in stack_buffer_scenarios()
210 		 * when transitioning to user mode on RISC-V. Reinstate that  in stack_buffer_scenarios()
212 		 * with a static non-zero K_THREAD_STACK_RESERVED definition.  in stack_buffer_scenarios()
218 			stack_size -= reserved;  in stack_buffer_scenarios()
221 		zassert_true(stack_size <= obj_size - reserved,  in stack_buffer_scenarios()
227 	carveout = stack_start - stack_buf;  in stack_buffer_scenarios()
228 	printk("   - Carved-out space in buffer: %zu\n", carveout);  in stack_buffer_scenarios()
231 		     "Suspicious carve-out space reported");  in stack_buffer_scenarios()
233 	end_space = obj_end - stack_end;  in stack_buffer_scenarios()
234 	printk("   - Unused objects space: %ld\n", end_space);  in stack_buffer_scenarios()
248 		 * K_THREAD_STACK_LEN(X) - K_THREAD_STACK_RESERVED ==  in stack_buffer_scenarios()
252 		 * K_KERNEL_STACK_LEN(Y) - K_KERNEL_STACK_RESERVED ==  in stack_buffer_scenarios()
256 		/* Not defined if user mode disabled, all stacks are kernel stacks */  in stack_buffer_scenarios()
264 		adjusted -= reserved;  in stack_buffer_scenarios()
268 		/* For arrays there may be unused space per-object. This is because  in stack_buffer_scenarios()
276 		 * We do not auto-expand usable space to cover this unused area. Doing  in stack_buffer_scenarios()
282 		 * 	K_THREAD_STACK_LEN(X) - K_THREAD_STACK_RESERVED;  in stack_buffer_scenarios()
290 		adjusted -= reserved;  in stack_buffer_scenarios()
304 		expected = -ENOTSUP;  in stack_buffer_scenarios()
311 		printk("self-reported unused stack space: %zu\n", unused);  in stack_buffer_scenarios()
335 			-1, flags, K_FOREVER);  in stest_thread_launch()
340 	printk("   - Memory mapped stack object %p\n", scenario_data.stack_mapped);  in stest_thread_launch()
349 	if (ret == -EINVAL) {  in stest_thread_launch()
372 		metadata_size = zo->data.stack_data->size;  in scenario_entry()
374 		metadata_size = zo->data.stack_size;  in scenario_entry()
394 	printk(" - Testing supervisor mode\n");  in scenario_entry()
399 		printk(" - Testing user mode (direct launch)\n");  in scenario_entry()
401 		printk(" - Testing user mode (drop)\n");  in scenario_entry()
479 	/* thread self-aborts, triggering idle thread cleanup */  in no_op_entry()
483  * @brief Show that the idle thread stack size is correct
485  * The idle thread has to occasionally clean up self-exiting threads.
495 		 * the idle stack may have been initialized on a  in ZTEST()
503 	/* 1cpu test case, so all other CPUs are spinning with co-op  in ZTEST()
506 	struct k_thread *idle = arch_curr_cpu()->idle_thread;  in ZTEST()  local
508 	struct k_thread *idle = _current_cpu->idle_thread;  in ZTEST()  local
512 	/* Spwawn a child thread which self-exits */  in ZTEST()
516 			-1, 0, K_NO_WAIT);  in ZTEST()
520 	/* Also sleep for a bit, which also exercises the idle thread  in ZTEST()
525 	/* Now measure idle thread stack usage */  in ZTEST()
526 	ret = k_thread_stack_space_get(idle, &unused_bytes);  in ZTEST()
528 	zassert_true(unused_bytes > 0, "idle thread stack size %d too low",  in ZTEST()
530 	printk("unused idle thread stack size: %zu/%d (%zu used)\n",  in ZTEST()
532 	       CONFIG_IDLE_STACK_SIZE - unused_bytes);  in ZTEST()