#include "machine/core.h"
#include "machine/apic.h"
#include "machine/lapic.h"

Include dependency graph for core.cc:

Namespaces
namespace	Core
	Implements an abstraction for CPU internals.

Functions
void	Core::init ()
	Initialize this CPU core.

void	Core::exit ()
	Deinitialize this CPU core.

unsigned	Core::getID ()
	Get the ID of the current CPU core using LAPIC::getID() with an internal lookup table.

unsigned	Core::count ()
	Get number of available CPU cores.

unsigned	Core::countOnline ()
	Get number of successfully started (and currently active) CPU cores.

bool	Core::isOnline (uint8_t core_id)
	Check if CPU core is currently active.

Constants
const unsigned long	CPU_CORE_STACK_SIZE = 4096
	Initial size of CPU core stacks.

static unsigned char	cpu_core_stack [Core::MAX *CPU_CORE_STACK_SIZE]
	Reserved memory for CPU core stacks.

unsigned char *	cpu_core_stack_pointer = cpu_core_stack
	Pointer to stack memory.

static unsigned	Core::cores = 0
	Number of available CPU cores.

static unsigned	Core::core_id [255]
	Lookup table for CPU core IDs with LAPIC ID as index.

static unsigned	Core::online_cores = 0
	Number of currently online CPU cores.

static bool	Core::online_core [Core::MAX]
	Lookup table for online CPU cores with CPU core ID as index.

Variable Documentation

◆ CPU_CORE_STACK_SIZE

const unsigned long CPU_CORE_STACK_SIZE = 4096

Initial size of CPU core stacks.

Used during startup in boot/startup.asm

unsigned char cpu_core_stack[Core::MAX *CPU_CORE_STACK_SIZE]

static

Reserved memory for CPU core stacks.

unsigned char* cpu_core_stack_pointer = cpu_core_stack

Pointer to stack memory.

Incremented during startup of each core (bootstrap and application processors) in boot/startup.asm