blob: ef6a62cdeacdffcd2834d090be0f2a61e21d7c17 [file] [log] [blame]
/*
* Copyright (c) 2016-2020 Intel Corporation.
*
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @file
* @brief Measure time
*
*/
#include <zephyr/kernel.h>
#include <ksched.h>
#include <zephyr/internal/syscall_handler.h>
#include <zephyr/app_memory/app_memdomain.h>
#include "footprint.h"
#include "userspace.h"
#define STACK_SIZE 512
K_SEM_DEFINE(test_sema, 1, 10);
struct k_thread my_thread_user;
int z_impl_dummy_syscall(void)
{
return 0;
}
static inline int z_vrfy_dummy_syscall(void)
{
return 0;
}
#include <syscalls/dummy_syscall_mrsh.c>
int z_impl_validation_overhead_syscall(void)
{
return 0;
}
static inline int z_vrfy_validation_overhead_syscall(void)
{
bool status_0 = K_SYSCALL_OBJ_INIT(&test_sema, K_OBJ_SEM);
bool status_1 = K_SYSCALL_OBJ(&test_sema, K_OBJ_SEM);
return status_0 || status_1;
}
#include <syscalls/validation_overhead_syscall_mrsh.c>
void test_drop_to_user_mode_1(void *p1, void *p2, void *p3)
{
volatile uint32_t dummy = 100U;
dummy++;
}
void drop_to_user_mode_thread(void *p1, void *p2, void *p3)
{
k_thread_user_mode_enter(test_drop_to_user_mode_1, NULL, NULL, NULL);
}
void drop_to_user_mode(void)
{
k_thread_create(&my_thread_user, my_stack_area_0, STACK_SIZE,
drop_to_user_mode_thread,
NULL, NULL, NULL,
-1, K_INHERIT_PERMS, K_NO_WAIT);
k_yield();
}
void user_thread_creation(void)
{
k_thread_create(&my_thread_user, my_stack_area, STACK_SIZE,
test_drop_to_user_mode_1,
NULL, NULL, NULL,
0, K_INHERIT_PERMS | K_USER, K_FOREVER);
k_thread_abort(&my_thread_user);
}
void syscall_overhead_user_thread(void *p1, void *p2, void *p3)
{
int val = dummy_syscall();
val |= 0xFF;
}
void syscall_overhead(void)
{
k_thread_create(&my_thread_user, my_stack_area_0, STACK_SIZE,
syscall_overhead_user_thread,
NULL, NULL, NULL,
-1, K_INHERIT_PERMS | K_USER, K_NO_WAIT);
}
void validation_overhead_user_thread(void *p1, void *p2, void *p3)
{
/* get validation numbers */
validation_overhead_syscall();
}
void validation_overhead(void)
{
k_thread_access_grant(k_current_get(), &test_sema);
k_thread_create(&my_thread_user, my_stack_area, STACK_SIZE,
validation_overhead_user_thread,
NULL, NULL, NULL,
-1 /*priority*/, K_INHERIT_PERMS | K_USER, K_NO_WAIT);
}
void run_userspace(void)
{
k_mem_domain_add_thread(&footprint_mem_domain, k_current_get());
drop_to_user_mode();
user_thread_creation();
syscall_overhead();
validation_overhead();
}