int main(int ac, char **av, char **ev)
{
struct stat tmp;
char *file;
pid_t pid;
if (ac < 2)
print_help();
if (!(file = get_file_path(av[1], ev)))
{
ft_putendl_fd("Can't find exec in path", 2);
exit(EXIT_SUCCESS);
}
if (stat(file, &tmp) == -1)
{
ft_putstr_fd("ft_strace: \"", 2);
ft_putstr_fd(av[1], 2);
ft_putstr_fd("\": No such file or directory", 2);
exit(EXIT_FAILURE);
}
syscalls_init();
signals_init();
errno_init();
pid = fork();
if (pid == -1)
{
ft_putendl_fd("ft_strace: failed to fork", 2);
exit(EXIT_FAILURE);
}
else if (pid == 0)
child_launch(av, file);
else
parent_launch(pid);
return (EXIT_SUCCESS);
}
JNIEXPORT void JNICALL
Java_sun_nio_fs_LinuxNativeDispatcher_init(JNIEnv *env, jclass clazz)
{
#ifndef COMPILE_AGAINST_SYSCALLS
syscalls_init();
#endif
clazz = (*env)->FindClass(env, "sun/nio/fs/UnixMountEntry");
if (clazz == NULL)
return;
entry_name = (*env)->GetFieldID(env, clazz, "name", "[B");
entry_dir = (*env)->GetFieldID(env, clazz, "dir", "[B");
entry_fstype = (*env)->GetFieldID(env, clazz, "fstype", "[B");
entry_options = (*env)->GetFieldID(env, clazz, "opts", "[B");
}
void kernel_entry (multiboot_info* bootinfo)
{
clear_screen(); puts("Kernel loaded.\n");
gdt_install(); puts("GDT initialised.\n");
idt_install(); puts("IDT initialised.\n");
memman_init(bootinfo);
kheap_init();
fat32_init();
// TODO: figure out how to do it safely
//acpi_init();
apic_init();
ioapic_init(); // keyboard only for now
register_handler(0x21, keyboard_handler);
register_handler(0xD, gpf_handler);
syscalls_init(); // maybe syscalls_init() like acpi_init, apic_init, etc... there should be common naming
timer_init(0x20, 0x002fffff, 0xB, 1); // vector, counter, divider, periodic -- check manual before using
// sets up kernel task and registers handler for timer
scheduler_init();
// registers locking sys
monitor_init();
keyboard_init();
// testing scheduler
if (fork_kernel() == 0)
{
if (!exec("SHELL"))
{
// something horrible happend
// exit()
}
exit();
}
else
{
for(;;)
{
asm volatile("hlt");
}
}
asm ("sti"); // release monsters, it can be set earlier, but fails horribly if set before acpi_init
for(;;);
}
void IRAM user_init (void)
{
syscalls_init ();
thread_isr_stack_init ();
/* set system frequency */
system_update_cpu_freq(ESP8266_CPU_FREQUENCY);
/* reinit system timer as microsecond timer */
system_timer_reinit ();
/* setup the serial communication */
uart_div_modify(0, UART_CLK_FREQ / STDIO_UART_BAUDRATE);
/* once the ETS initialization is done we can start with our code as callback */
system_init_done_cb(system_init);
/* keep wifi interface in null mode per default */
wifi_set_opmode_current (0);
}
/**
* Initializes the minimal system including CPU Clock, UART, and Flash accelerator
* Be careful of the order of operations!!!
*/
void low_level_init(void)
{
rtc_init();
m_rtc_boot_time = rtc_gettime();
/**
* Configure System Clock based on desired clock rate @ sys_config.h
* Setup default interrupt priorities that will work with FreeRTOS
*/
sys_clock_configure();
configure_flash_acceleration(sys_get_cpu_clock());
configure_interrupt_priorities();
__enable_irq();
// Setup UART with minimum I/O functions
uart0_init(UART0_DEFAULT_RATE_BPS);
sys_set_outchar_func(uart0_putchar);
sys_set_inchar_func(uart0_getchar);
/**
* If buffers are set to 0, so printf/scanf will behave correctly!
* If not set, then printf/scanf will have weird buffering/flushing effects
*/
setvbuf(stdout, 0, _IONBF, 0);
setvbuf(stdin, 0, _IONBF, 0);
/**
* Set the semaphore for the malloc lock.
* Initialize newlib fopen() fread() calls support
*/
syscalls_init();
/**
* Enable watchdog to allow us to recover in case of:
* - We attempt to run an application and it's not there
* - Application we ran crashes
*/
sys_watchdog_enable();
print_boot_info();
}
/**
* Initializes the minimal system including CPU Clock, UART, and Flash accelerator
* Be careful of the order of the operations!!!
*/
void low_level_init(void)
{
rtc_init();
g_rtc_boot_time = rtc_gettime();
/* Configure System Clock based on desired clock rate @ sys_config.h */
sys_clock_configure();
configure_flash_acceleration(sys_get_cpu_clock());
/* Setup default interrupt priorities that will work with FreeRTOS */
configure_interrupt_priorities();
/* These methods shouldn't be needed but doing it anyway to be safe */
NVIC_SetPriorityGrouping(0);
__set_BASEPRI(0);
__enable_fault_irq();
__enable_irq();
/* Setup UART with minimal I/O functions */
uart0_init(SYS_CFG_UART0_BPS);
sys_set_outchar_func(uart0_putchar);
sys_set_inchar_func(uart0_getchar);
/**
* Turn off I/O buffering otherwise sometimes printf/scanf doesn't behave
* correctly due to strange buffering and/or flushing effects.
*/
setvbuf(stdout, 0, _IONBF, 0);
setvbuf(stdin, 0, _IONBF, 0);
/* Initialize newlib fopen() fread() calls support */
syscalls_init();
/* Enable the watchdog to allow us to recover in an event of system crash */
sys_watchdog_enable();
/* Uart and printf() are initialized, so print our boot-up message */
print_boot_info();
}
/**
* Initializes the minimal system including CPU Clock, UART, and Flash accelerator
* Be careful of the order of operations!!!
*/
void low_level_init(void)
{
rtc_init();
g_rtc_boot_time = rtc_gettime();
/**
* Configure System Clock based on desired clock rate @ sys_config.h
* Setup default interrupt priorities that will work with FreeRTOS
*/
sys_clock_configure();
configure_flash_acceleration(sys_get_cpu_clock());
configure_interrupt_priorities();
__enable_irq();
// Setup UART with minimum I/O functions
uart0_init(UART0_DEFAULT_RATE_BPS);
sys_set_outchar_func(uart0_putchar);
sys_set_inchar_func(uart0_getchar);
/**
* Turn off I/O buffering otherwise sometimes printf/scanf doesn't behave
* correctly due to strange buffering and/or flushing effects.
*/
setvbuf(stdout, 0, _IONBF, 0);
setvbuf(stdin, 0, _IONBF, 0);
// Initialize newlib fopen() fread() calls support
syscalls_init();
/**
* Enable watchdog to allow us to recover in case of:
* - We attempt to run an application and it's not there
* - Application we ran crashes
*/
sys_watchdog_enable();
print_boot_info();
}
void monitor_init(uint32_t core_id)
{
#if TARGET_NUM_CORES > 1
/* Target-dependent master initialization */
if (core_id == TARGET_PRIMARY_CORE_ID) {
target_primary_core_init();
}
#endif /* TARGET_NUM_CORES > 1 */
/* Barrier: .bss and .data sections is initialization */
initialization_barrier(core_id);
/* Set up the Monitor Vector Base Address Register (MVBAR) */
CP15_MVBAR_WRITE(&monitor_vector_table);
/* Set up the Secure Configuration Register (SCR) for the T OS */
CP15_SCR_WRITE(MON_T_SCR);
/* Set up the Non-Secure Access Control Register (NSACR) */
CP15_NSACR_WRITE(MON_NSACR);
/* Target-dependent initialization */
target_init(core_id);
/* Barrier: target-dependent initialization */
phase_barrier(core_id, 1);
/* Initialize libraries in the primary core only */
if (core_id == TARGET_PRIMARY_CORE_ID) {
syscalls_init();
notifier_init();
}
/* Barrier: monitor initialization is finished */
phase_barrier(core_id, 2);
}