extern "C" void kernel_start(uintptr_t magic, uintptr_t addr) {
// enable SSE extensions bitmask in CR4 register
enableSSE();
// Initialize system calls
_init_syscalls();
// Initialize stack-unwinder, call global constructors etc.
_init_c_runtime();
// Initialize OS including devices
OS::start(magic, addr);
}
void kernel_start(uintptr_t magic, uintptr_t addr)
{
// Initialize default serial port
__init_serial1();
// generate checksums of read-only areas etc.
__init_sanity_checks();
// Determine where free memory starts
extern char _end;
uintptr_t free_mem_begin = reinterpret_cast<uintptr_t>(&_end);
if (magic == MULTIBOOT_BOOTLOADER_MAGIC) {
free_mem_begin = _multiboot_free_begin(addr);
}
// Preserve symbols from the ELF binary
free_mem_begin += _move_symbols(free_mem_begin);
// Initialize zero-initialized vars
_init_bss();
// Initialize heap
_init_heap(free_mem_begin);
// Initialize stack-unwinder, call global constructors etc.
_init_c_runtime();
// Initialize system calls
_init_syscalls();
// Initialize early OS, platform and devices
OS::start(magic, addr);
// Initialize common subsystems and call Service::start
OS::post_start();
// verify certain read-only sections in memory
kernel_sanity_checks();
// Starting event loop from here allows us to profile OS::start
OS::event_loop();
}